به جمع مشترکان مگیران بپیوندید!

تنها با پرداخت 70 هزارتومان حق اشتراک سالانه به متن مقالات دسترسی داشته باشید و 100 مقاله را بدون هزینه دیگری دریافت کنید.

برای پرداخت حق اشتراک اگر عضو هستید وارد شوید در غیر این صورت حساب کاربری جدید ایجاد کنید

عضویت

فهرست مطالب mahdi shabani

  • Parastou Gholami, Hossein Asgarian-Omran, Marjan Yaghmaie, Jafar Mahmudian, Shirin Kianersi, Sina Salari, Ehsan Zaboli, Mahmood Jeddi-Tehrani, Amir-Hassan Zarnani, _ Mahdi Shabani *
    Background

    Placenta-specific 1 (PLAC1) is one of the cancer-testis-placenta antigens that has no expression in normal tissue except placenta trophoblast and testicular germ cells, but is overexpressed in a variety of solid tumors. There is a lack of studies on the expression of PLAC1 in leukemia. We investigated expression of PLAC1 in Acute Myeloid Leukemia (AML) and Acute Lymphoblastic Leukemia (ALL).

    Methods

    In this study, we investigated expression pattern of PLAC1 gene in peripheral blood and bone marrow mononuclear cells of newly-diagnosed patients with AML (n=31) and ALL (n=31) using quantitative real-time PCR. Normal subjects (n=17) were considered as control. The PLAC1 protein expression in the samples were also detected using western blotting.

    Results

    Our data demonstrated that PLAC1 transcripts had 2.7 and 2.9 fold-change increase in AML and ALL, respectively, compared to normal samples. PLAC1 transcript expression was totally negative in all studied normal subjects. Level of PLAC1 mRNA expression in ALL statistically increased compared to normal samples (p=0.038). However, relative mRNA expression of PLAC1 in AML was not significant in comparison to normal subjects (p=0.848). Furthermore, relative mRNA expression of PLAC1 in AML subtypes was not statistically significant (p=0.756). PLAC1 gene expression showed no difference in demographical clinical and para-clinical parameters. Western blotting confirmed expression of PLAC1 in the ALL and AML samples.

    Conclusion

    Considering PLAC1 expression profile in acute leukemia, PLAC1 could be a potential marker in leukemia which needs complementary studies in the future.

    Keywords: Acute lymphoblastic leukemia, Acute Myeloid Leukemia, Biomarker, Expressionprofile, Leukemia, PLAC1}
  • Fateme Khani Chamani, Mahdi Shabani, Afshin Moradi, Maedeh Alinejad, Seyed Amir Jalali *

    The effects of radiation therapy (RT) for cancer can be systemic and partially mediated by the immune system. However, radiation alone is unlikely to transform an immunosuppressive environment into an immunostimulatory one. Therefore, an effective combination of RT and immunotherapy may provide a new, more efficient treatment approach. Here, we investigated how the expression of programmed cell death-ligand 1 (PD-L1) in the tumor microenvironment varied in different RT regimens with the same biologically effective dose.
    In this study, female BALB/c mice inoculated with CT26 tumor cells were irradiated with 3 different RT regimens using the same BED of 40 gray (Gy). These included ablative RT (1*15 Gy), hypo-fractionated RT (2*10 Gy), and conventional (Hyper-fractionated) RT (10*3 Gy). PD-L1 expression was analyzed with immunohistochemical staining on days 2 and 20 and when the size of tumors had reached 2 cm2 after RT.
    All treated groups expressed PD-L1, but the group receiving single ablative high-dose RT showed higher expression compared to the other groups. No significant differences in PD-L1 expression were observed at different times in the same group.
    These findings showed that different regimens of RT have different effects on the TME, so a combination of RT and immune checkpoint blockade could be clinically used in cancer patients.

    Keywords: Immunohistochemistry, Programmed cell death 1 ligand 1 protein, Radio-frequency therapy, Tumor microenvironments}
  • Servin Bagheralmoosavi, Parastou Gholami, Mahdi Amini, Mahdi Alizadeh - Marjan Yaghmaei, Sahar Tavakkoli, Sina Salari, Mahmood Jeddi, Tehrani, Alireza Ghasempour, Kambiz Gilany, Mahdi Shabani
    Background

    Despite the significant progress in the treatment of Acute Lymphoblastic Leukemia (ALL) in children, it still remains as one of the most challenging malignancies in adults. Identification of new biomarkers may improve the management of adult ALL. Proteins expressed on the cell surface can be considered as disease-associated biomarkers with potential for diagnosis and targeted therapies. Thus, membrane proteome studies give essential information about the disease-related biomarkers.

    Methods

    We applied 2-dimensional blue-native SDS-PAGE technique followed by MALDI-TOF/TOF-mass spectrometry to study the cell membrane proteome of peripheral blood mononuclear cells of adult B-ALL patients in comparison to that of the healthy controls.

    Results

    Sixty seven differentially expressed protein spots were detected, among them 52 proteins were found to be up-regulated but the other 15 proteins were downregulated in B-ALL. Five differentially expressed proteins, involved in energy metabolism pathways, were detected in B-ALL patients compared to the healthy control group.

    Conclusion

    Differentially expressed proteins provide an insight into the molecular biology of B-ALL. Further studies must be done to confirm our data to be considered as potential targets for detection and treatment of B-ALL.

    Keywords: Acute lymphoblastic leukemia, Biomarkers, Child, Mass, Matrix-assisted laser desorption-ionization, Molecular biology, Proteome, Spectrometry}
  • Mohammad Zaman, Ahmad Ghasemi, Morteza Shamshirgaran, Sajjad Ahmadpour, Ahmad Hormati, Javad Khodadadi, Mehran Varnasseri, Fatemeh Amini, Amaneh Shayanrad, Vahid Younesi, Hossein Poustchi, Mahdi Shabani
    Background

    Evidence on seroconversion profile of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infected patients is limited. We mainly aimed to evaluate seroconversion and persistence of virus-specific antibodies in patients infected by coronavirus disease 2019 (COVID-19).

    Methods

    This prospective study was conducted on 118 patients with COVID-19 presentations admitted to three hospitals in Iran and recovered from the disease, during April and May 2020. Presence of COVID-19 was confirmed by Polymerase Chain Reaction (PCR) testing on nasopharyngeal swabs. Serum samples were collected at different time points, including 0-5, 6-15, 16-25, 26-35, and 36-95 days of clinical symptom onset. For measurement of SARS-CoV-2-specific IgG and IgM antibody titers, Iran's Food and Drug Administration-approved SARS-CoV-2 ELISA kits were used.

    Results

    Serologic assay revealed that 37.3% of patients (n=44) were positive for IgM at 0-5 days interval after clinical symptom onset. This rate was 60.2% (n=71) for IgG. There were increasing IgM and IgG seroconversion rates during first 25 days of clinical symptom onset, but seropositivity started to decrease thereafter, which was more evident for IgM (17.9%) than IgG (58.9%) at the 36-95 days post symptoms appearance. In other words, it was found that 83.6% of IgM-positive and 32.9% of IgG-positive patients in the first month of clinical symptom onset became seronegative in the third month of clinical symptom onset.

    Conclusion

    The findings demonstrated that antibody responses to SARS-CoV-2 infection were developed in recovered COVID-19 patients; however, some of them were seronegative three months after onset of relevant symptoms. Furthermore, the stability of anti-SARS-CoV-2 antibodies could also correct our expectations from COVID-19 vaccination responses.

    Keywords: COVID-19, SARS‐CoV‐2, Seroconversion, Seropositivity}
  • نصرالله فاطمی امین، محمدسعید کرمی، محسن طالبی، مهدی شعبانی
    سابقه و هدف

    دانش اخلاق جنسی به‌‌منظور الگودهی رفتاری ساحت جنسی انسان، در نتیجه کنترل و هدفمندسازی رفتار جنسی شکل‌گرفته است. ازاین‌‌رو این دانش هنجارهای اخلاقی رفتار جنسی را بررسی می‌کند. یکی از مسایل مهم در این حیطه تعیین مقدار مطلوب رابطه جنسی است. در این باره از دیدگاه های گوناگون پزشکی و روان‌شناختی پژوهش هایی انجام گرفته است، اما تاکنون مرزهای اخلاقی رابطه خوب از دیدگاه اسلام به‌صورت روشمند بررسی نشده است. هدف پژوهش حاضر بازشناخت ملاک های اخلاقی مقدار رابطه زناشویی بهنجار با تاکید بر اصول اخلاق جنسی اسلام بود.

    روش کار

    پژوهش حاضر از نوع اسنادی-تحلیلی است که بر پایه منابع اسلامی (آیات و روایات) انجام شده است. به‌دلیل اتکای این پژوهش بر آیات و روایات، تعداد زیادی از منابع اصیل و قدیمی به‌عنوان مرجع تحقیق بررسی شد ولی در بخش تحلیل و طبقه‌بندی اطلاعات علاوه‌بر روش فهم متون دینی به دیدگاه‌های معاصر نیز توجه شده است. مولفان مقاله هیچ‌گونه تضاد منافعی گزارش نکرده‌اند.

    یافته‌ ها:

     از اسناد مکتوب و تحلیل محتوای آنها چهار دسته روایت درباره موضوع پژوهش به دست آمده است. بررسی این روایات به استنباط چندی از اصول اخلاقی و کدهای برآمده از آنها منتهی شد و در پی آن مرزهای اخلاقی رابطه جنسی زناشویی بهنجار تبیین گردید.

    نتیجه‌ گیری:

     بر اساس کدهای اخلاقی ارایه‌شده، رابطه جنسی-عاطفی مطلوب بین زوجین محصور به چارچوب‌های اخلاقی است. توجه به مرزهای اخلاقی رابطه، علاوه‌بر فضیلتمندکردن آن می تواند به پایدارشدن خانواده و رضایت زناشویی کمک نماید.

    کلید واژگان: اخلاق جنسی, رابطه جنسی, رابطه زناشویی بهنجار اسلامی, کد اخلاقی}
    Nasrolah Fatemi-Amin, MohammadSaeed Karami, Mohsen Talebi, Mahdi Shabani
    Background and Objective

    Knowledge of sexual behavior has been developed to provide a behavioral pattern for human sexual relationship to control sexual behavior and make it purposeful. Accordingly, this knowledge examines the behavioral norms in sexual behavior. One of the important issues in this regard is the desirable amount of sex. In this respect, some studies have been conducted from different medical and psychological perspectives, but the ethical borderlines of a good relationship have not been examined from the perspective of Islam. The present study attempts to reexamine the ethical criteria related to the normal amount of sex with an emphasis on the principles of sexual behavior in Islam.

    Methods

    The present study is library-based analytical, conducted based on Islamic sources (Quranic verses and narrations from Imams and the Prophet). Considering the fact that the present study relies on the Quranic verses and narrations, a large number of original and old sources were examined, but in analyzing and classifying the collected information, the contemporary views as well as the method of interpreting the religious texts were considered. The authors reported no conflict of interests.

    Results

    From the written documents and their analysis, four classes of narrations were found in relation to the topic under investigation. Based on their analysis, a number of ethical principles and codes were obtained and, then, the ethical borderlines for sexual relationship were explained.

    Conclusion

    Based on the ethical codes presented, a desirable sexual-emotional relationship between the partners is to be controlled by an ethical framework. Paying attention to the ethical borderlines of this relationship not only makes it a noble and virtuous practice, but helps to stabilize the family and the sexual relationship.

    Keywords: Ethical code, Normal Islamic sexual, relationship, Sexual relationship, Sexual behavior}
  • پرستو غلامی، سروین باقرالموسوی، شیرین کیان ارثی، محمد حجت فرسنگی، سینا سالاری، مرجان یغمایی، جعفر محمودیان، محمود جدی تهرانی، حسین عسگریان عمران، امیرحسن زرنانی، مهدی شعبانی*
    سابقه و هدف

     آنتی ژن اختصاصی جفتی1 (PLAC1) از دسته مارکرهایی میباشد که بیان بالا بر سطح طیف گسترده ای از تومورهای انسانی و بیان محدود در بافتهای نرمال دارد. با توجه به فقدان مطالعات بیان PLAC1 در CML و CLL، تشویق شدیم تا به بررسی الگوی بیان ژن PLAC1 در بیماری های ذکر شده بپردازیم.

    روش بررسی

    نمونه های خون محیطی 6 بیمار CML و 10 بیمار CLL جمع آوری شد.  به علاوه نمونه های خون محیطی 10 فرد نرمال به همراه EDTA گرفته شد. تمام بیماران و افراد سالم قبل از نمونه گیری فرم رضایت نامه را امضا نمودند. سلولهای تک هسته ای آنها با روش فایکول جداسازی شد. سلولهای تک هسته ای جدا شده برای استخراج RNA و سنتز cDNA با روش RT-PCR استفاده گردیدند. بیان ژن PLAC1 در مقایسه با ژن GAPDH در افراد بیمار و کنترل با Real-Time PCR بررسی شد. نتایج حاصله با نرم افزارSPSS  و تست chi-square آنالیز آماری شد.

    یافته ها

    تمامی 10 نمونه نرمال PLAC1 منفی بودند. در گروه CML (4 مورد) در مقایسه با کنترل تفاوت معنی داری مشاهده شد (P-value=0.000) . در حالی که گروه CLL (1 مورد از 10 مورد) با کنترل، از نظر آماری اختلاف معناداری مشاهده نشد (P-Value=0.648). درصد قابل توجهی از CML بیان PLAC1 مثبت بود ولی در CLL بیان PLAC1 مشهود نبود.

    نتیجه گیری

    PLAC1 در CML، به عنوان یک بیومارکر می تواند بصورت بالقوه به عنوان مارکری برای کمک به تشخیص، پیش آگهی و درمان در آینده مطرح شود.

    کلید واژگان: الگوی بیان ژن, آنتی ژن پروتئین اختصاصی جفتی 1, لوسمی میلوییدی مزمن, لوسمی لنفوسیتی مزمن}
    Parasto Gholami, Sarvin Bagheralmoosavi, Shirin Kian Ersi, Mohammad Hojjat-Farsangi, Sina Salari, Marjan Yaghmaie, Jafar Mahmoudian, Mahmood Jeddi Tehrani, Hossein Asgarian-Omran, Amirhasan Zarnani, Mahdi Shabani*
    Purpose

    Placenta-specific protein 1 (PLAC1) is one of the members of cancer-testis antigens family that has limited expression in normal tissue, but is upregulated in a variety of malignant tissues. Considering the lack of studies on the expression of FCRL1 in CML and CLL, the current study was conducted to examine the expression pattern of PLAC1 gene in these leukemias.

    Materials and Methods

    Fresh peripheral blood samples were collected from 6 CML and 10 CLL patients. In addition, peripheral blood samples of 10 healthy individuals were collected in EDTA as control group. All patients and healthy individuals signed a consent letter before sampling. The mononuclear cells were separated using ficoll-hypaque gradient centrifugation. Isolated mononuclear cells were used for RNA extraction and cDNA synthesis using RT-PCR method. Then, PLAC1 transcript expression in comparison to GAPDH were detected via Real-Time PCR. The statistical analyses were performed using chi-square test in SPSS.

    Results

    All 10 normal samples were negative for PLAC1. The PLAC1 expression was found to be statistically different in CML group (4 out of 6 cases) compared with that in the normal group (P value = 0.000). However, CLL revealed no significant difference compared to normal individuals for PLAC1 expression (P Value = 0.648). In a significant percentage of CML patients, PLAC1 expression was positive but in CLL patients PLAC1, transcript expression was not evident.

    Conclusion

    It seems that PLAC1 could potentially be proposed as a biomarker in CML to aid in the diagnosis, prognosis, and treatment in the future.

    Keywords: Gene expression, placental-specific protein 1, chronic myeloid leukemia, chronic lymphocytic leukemia}
  • Narges Zargar Balajam, Mahdi Shabani, Mahmoud Aghaei*
    Background and purpose

    Acute lymphoblastic leukemia (ALL) is a type of cancer of blood and bone marrow characterized by abnormal proliferation of lymphoid progenitor cells. Galectin-9 is a tandem-repeat type galectin expressed in various tumor cells. It seems that the connection between galectin-9 and T cell immunoglobulin mucin-3 receptor acts as a negative regulator of cancer cells proliferation.

    Experimental approach

    In this research, the effects of galectin-9 were investigated using MTS cell proliferation colorimetric, colony-forming, annexin V-FITC/PI, and caspase-3 assays in the Jurkat and KE-37 cell lines of ALL. Furthermore, the western blotting technique was used to evaluate the levels of apoptotic proteins such as Bax and Bcl-2 in these cell lines.

    Findings / Results

    Our results indicated that galectin-9 can considerably reduce the cell growth and colony formation ability of both Jurkat and KE-37 cell lines in a concentration-dependent manner. Besides, galectin9 induced apoptosis in a concentration-dependent manner in ALL cells by a mechanism associated with Bax/Bcl-2 expression and activation of the caspase-3 activation.

    Conclusion and implications

    Galectin-9 inhibited the growth and proliferation of cell lines with increased programmed cell death, therefore it can be considered as a potential factor in the progression of ALL therapeutics that needs more research in this context.

    Keywords: Acute lymphoblastic leukemia, Apoptosis, Galectin-9, T-cell immunoglobulin, mucin-domain 3}
  • Pantea Hajimirza Shafiesoltani, Flora Forouzesh *, Mahdi Shabani, Mahmoud Aghaei
    Background

    Colorectal cancer (CRC) is the third most common cancer among men and the second most common type of cancer among women worldwide. The resistance of tumor cells to apoptosis is caused by changes in the expression of anti-apoptotic or pro-apoptotic proteins. Histone deacetylase inhibitors (HDACi) are known to cause changes in gene expression.

    Objectives

    The present study aimed at investigating the anti-proliferative effects of lenalidomide (LEN) as HDACi and dexamethasone (DEX) on the human colon cancer HT-29 cell line.

    Methods

    The HT-29 cell line was treated with various concentrations of LEN and DEX individually and in combination for 24, 48, and 72 hours. Cytotoxicity was evaluated by MTT assay. The half-maximal inhibitory concentration (IC50) was measured, and quantitative real-time polymerase chain reaction (qRT-PCR) was also performed to examine the expression of Bcl2, Bax, Fas, and FasL genes.

    Results

    The combination of LEN (1000 µM) with DEX (100 µM) showed potent synergistic anti-proliferative activities in a time- and dose-dependent manner. The combination of these drugs induced cell death by affecting the extrinsic and intrinsic apoptotic gene expression profiles.

    Conclusions

    The combination of LEN with DEX can be proposed as a new therapeutic approach for CRC.

    Keywords: Colorectal Cancer, Apoptotic Genes, Lenalidomide, Dexamethasone, HT-29 Cell Line}
  • Sahar Mortezagholi, Davood Rostamzadeh, Maedeh Alinejad, Vahid Younesi, Payam Tabarsi, Mahdi Shabani *
    Background
    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) rapidly transmits in general population, mainly between health-care workers (HCWs) who are in close contact with patients.
    Objective
    To study the seropositivity of HCWs as a high-risk group compared to general population.
    Methods
    72 samples were obtained from HCWs working in Masih Daneshvari hospital as one of the main COVID-19 admission centers in Tehran, during April 4 to 6, 2020. Also we collected 2021 blood samples from general population. The SARS-CoV-2 specific IgM, and IgG antibodies in the collected serum specimens were measured by commercial ELISA kits.
    Results
    Based on the clinical manifestations, 25.0%, 47.2%, and 27.8% of HCWs were categorized as symptomatic with typical symptoms, symptomatic with atypical symptoms, and asymptomatic, respectively. Symptomatic individuals with typical and atypical symptoms were 63.2% and 36.8% positive in RT-PCR test, respectively. Anti-SARS-CoV-2 IgM and IgG antibodies were detected in 15.3% and 27.8% of HCWs samples, respectively. Antibody testing in the general population indicated that SARS-CoV-2 specific IgM and IgG were found in (162/2021) 8%, and (290/2021) 14.4%, respectively. The frequency of positive cases of IgM and IgG were significantly increased in HCWs compared to general population (p= 0.028 for IgM and p= 0.002 for IgG).
    Conclusion
    The frequency of SARS-CoV-2 specific antibodies in HCWs was higher than general population indicating a higher viral transmission via close exposure with COVID-19 patients.
    Keywords: COVID-19, ELISA, general population, health-care workers, SARS-CoV-2, Seroprevalence}
  • فلورا فروزش*، پانته آ حاجی میرزا شفیع سلطانی، مهسا قیاقی، مهدی شعبانی
    پیشینه مطالعه و هدف

    سرطان کولورکتال یکی از شایع ترین سرطان ها است و تغییرات اپی ژنتیکی به عنوان هدف درمانی مورد توجه قرار گرفته است. سدیم بوتیرات با هایپر-استیلاسیون اجزا کروماتین قادر به تغییر در بیان ژن ها است. هدف از این مطالعه بررسی تاثیر سدیم بوتیرات بر روی بیان ژن های Bax و Bcl-2 می باشد.

    روش مطالعه

    رده سلولی Caco-2 با غلظت های مختلف سدیم بوتیرات (25 الی 150 میلی مولار) براساس غلظت IC50 در دو بازه زمانی 24 ساعت و 48 ساعت تیمار شد. بیان ژن های Bax و Bcl-2 توسط تکنیک qReal-Time PCR به روش ΔΔCT -2 اندازه گیری و نسبت Bcl-2/Bax مورد ارزیابی قرار گرفت.

    نتایج

    نتایج نشان داد سدیم بوتیرات باعث افزایش بیان ژن Bax و کاهش بیان ژن Bcl2 در سلول های تحت تیمار در مقایسه با گروه کنترل شد که از نظر آماری معنی دار می باشد (p <0.05). غلظت 25 میلی مولار در بازه زمانی 48 ساعت تیمار موثرترین دوز انتخاب گردید. همچنین نسبت Bcl-2/Bax در همین غلظت کاهش معنی داری را نشان داد.

    نتیجه گیری

    سدیم بوتیرات با کاهش نسبت بیان Bcl-2/Bax باعث القا آپوپتوز در سلول های سرطانی می شود. این ماده می تواند به عنوان هدف درمانی استفاده شود ولی نیاز به بررسی بیشتر می باشد.

    کلید واژگان: سرطان کولورکتال, سدیم بوتیرات, رده سلولی Caco-2, BAX, BCL-2}
    Flora Forouzesh *, Pantea Hajimirza Shafiesoltani, Mahsa Ghiaghi, Mahdi Shabani
    Introduction and Aim

    Colorectal cancer is one of the most common cancers. Epigenetic change has been considered by many scientists as a therapeutic target. Hyper acetylation of chromatin components by sodium butyrate can alter gene regulation. This study aims to investigate the effects of sodium butyrate on Bax and Bcl-2 gene expression.

    Methods

    Caco-2 cell line was treated with different concentrations of sodium butyrate (25 mM to 150 mM) based on IC50 concentration in two time periods of 24 hours and 48 hours. Bax and Bcl-2 gene expression were measured by qReal-Time PCR technique and Bcl2/Bax ratio was evaluated.

    Results

    The results showed that sodium butyrate increased the expression of Bax gene and decreased the expression of Bcl-2 gene in treated cells compared to the control group, which was statistically significant (p < /em> <0.05), and 25 mM was selected as the most effective dose after 48 hours of treatment. Also, the Bcl-2/Bax ratio at the same concentration showed a significant decrease

    Conclusion

    Sodium butyrate induces apoptosis in cancer cells by reducing the expression ratio of Bcl-2/Bax. It can be used as a therapeutic target but needs further investigation.

    Keywords: Colorectal Cancer, Sodium butyrate, Caco-2 cell line, BAX, Bcl2}
  • پانته آ حاجی میرزا شفیع سلطانی، فلورا فروزش*، مهدی شعبانی

    در ایران، سرطان کولورکتال(CRC) به ترتیب پنجمین و سومین سرطان رایج در مردان و زنان می باشد. هیچ انتخاب درمانی برای فرم متاستازی CRC در دسترس نیست لذا شناسایی اهداف شیمی درمانی و مولکولی جدید جهت ارتقا بقا و درمان پذیری بیماران حایز اهمیت است. فرار از مسیرهای آپوپتوزی در ایجاد و پیشرفت سرطان از جمله CRC نقشی مهمی را‎ ایفا می کند. شناخت اساس مکانیسم مسیرهای پیام رسان آپوپتوز و ابزارهایی که سرطان برای فرار از آپوپتوز استفاده می کنند منجر به طراحی درمان های موثر می شود که رشد سلول را مهار کند. یکی از مسیرهای خارجی آپوپتوزی، مسیر مرگ Fas/FasL است. هدف از این مقاله مروری سیستماتیک، بررسی مسیر مرگ که می تواند در شناسایی هدف های درمانی جدید در سرطان کولورکتال موثر واقع شود. مسیر گیرنده مرگ، بر سیستم ایمنی تومور نظارت دارد و با استفاده از سلول های NK و T، سبب تخریب سلول توموری می شود و این عمل را از طریق القا آپوپتوز توسط FasL انجام می دهند. سلول های سرطانی طی پدیده حمله متقابل Fas با بیان FasL باعث القای آپوپتوز در سلول های T می شوند و در نتیجه منجر به تضعیف پاسخ ایمنی علیه تومور می گردند. بدین منظور این مطالعه مروری سیستماتیک با استفاده از کلمات کلیدی سرطان، آپوپتوز، Fas، FasL و سیستم ایمنی در پایگاه های اطلاعات 86 مطالعه که از سال 1995 تا 2020 به بررسی تغییرات آپوپتوز در سرطان پرداخته بودند، انتخاب و مورداستفاده قرار گرفت. حمله متقابل Fas، مکانیسمی است که سلول های توموری برای فرار از ایمنی استفاده می کنند. ایجاد حساسیت مجدد به آپوپتوز به واسطه Fas نوعی مداخله درمانی موثر محسوب می گردد؛ که با تغییر بیان ژن های Fas و FasL می توان مانع از حمله متقابل Fas توسط تومور شد و نهایتا منجر به کارآمد شدن ایمنی در برابر سلول های توموری گردید.

    کلید واژگان: سرطان کولون, آپوپتوز, Fas, FasL و سیستم ایمنی}
    Pantea Hajimirza Shafiesoltani, Flora Forouzesh*, Mahdi Shabani

    Colorectal cancer is the fifth common cancer in men and the third in women in Iran. There is no therapeutic approach for metastatic colorectal cancer, so it is imperative to identify new chemotherapeutic and molecular targets to improve patient’s survival and the probability of being cured. Resistance to apoptosis plays an important role in the development and progression of different cancers such as CRC. Understanding the basis of the mechanism of apoptosis pathways and the tools used by cancer for escaping from apoptosis results in the design of effecient therapies that inhibit cell growth. One of the apoptosis pathways is the extrinsic–Fas/FasL pathway. In this article, the extrinsic pathway of apoptosis with focus on death pathway of Fas and FasL in colorectal cancer has been reviewed aimed at finding new therapeutic targets for CRC. Fas-mediated apoptosis of lymphocytes normally serves immunoregulatory roles. Anti-tumor cytotoxic T cells and NK cells eliminate tumor cells by inducing Fas-mediated apoptosis using FasL. Cancer cells such as colon tumor cells enable a “Fas counterattack” against Fas sensitive antitumor lymphocytes and lead to immune suppression against tumor cells. This systematic review article was conducted by searching keywords; Cancer, Apoptosis, Fas, FasL, Immune system in valid sources. 86 studies analyzing apoptotic changes in cancer from 1995 to 2020 were selected and used. Fas counterattack is a mechanism, used by tumor cells to evade immune surveillance. It might be important to study the basis of this mechanism to design tumor-specific and effective treatment. Triggering Fas-mediated  apoptosis is an effective approach to cancer therapy. Altering the expression of Fas and FasL genes can inhibit the tumor strikes back by tumors and our immune system and work officially against tumor cells.

    Keywords: Colon cancer, Apoptosis, Fas, FasL, Immune system}
  • وحید خاکی بختیاروند، خدیجه رمضانی علی اکبری، مهدی شعبانی*

    مقدمه چاقی یک معضل بزرگ در حوزه ی سلامت است، که شیوع آن در چند دهه اخیر افزایش قابل توجهی داشته است. با افزایش شیوع چاقی، خطر ابتلا به انواع سرطان ها، دیابت نوع دو و بیماری های قلبی-عروقی افزایش یافته است. هدف از این مطالعه بررسی اثرات التهاب و تغییرات سلول های ایمنی در بافت چربی سفید افراد چاق، بر افزایش خطر ابتلا به سرطان است. در چاقی افزایش بافت چربی سفید باعث تغییر فنوتیپ ماکروفاژهای مقیم بافت به M1 و در نتیجه بروز التهاب مزمن می شود. در این شرایط تعداد سلول های سرکوب گر ایمنی نظیر سلول های T تنظیمی و سلول های سرکوب گر میلوییدی در بافت چربی سفید افزایش می یابد، ولی عملکرد ضد توموری سلول های کشنده طبیعی مهار می شود. علاوه براین، تغییرات هورمونی و متابولیکی در چاقی باعث افزایش خطر ابتلا به سرطان می شود: افزایش سطح هورمون هایی نظیر انسولین و لپتین منجر به فعال سازی مسیرمیتوژنیک Ras/MAPK و ارسال پیام های مهارکننده مرگ سلولی برنامه ریزی شده (آپوپتوز) در سلول های سرطانی می گردد. هم چنین بافت چربی سفید به عنوان منبع تامین انرژی برای سلول های سرطانی عمل می کند و با تولید سایتوکاین های پیش التهابی، آدیپوکاین ها و فاکتورهای پروآنژیوژنیک به رشد و متاستاز تومور کمک می کند. در مجموع چاقی با افزایش توده ی چربی سفید، بستری مناسب برای تومورزایی و مهار مسیرهای ضدتوموری فراهم می کند که خطر ابتلا به سرطان را افزایش می دهد.

    کلید واژگان: التهاب, چاقی, بافت چربی, سرطان, سلول های ایمنی, هورمون ها}
    Vahid Khaki Bakhtyarvand, KH. RamezaniAli Akbari, Mahdi Shabani*

    The incidence of obesity, as a major health problem, has increased significantly over the past decades. This condition is associated with an increased risk of cancers, type 2 diabetes, and cardiovascular diseases. The current study aimed to investigate the effects of inflammation and changes of adipose tissue-resident immune cells on increasing the risk of cancer in obese individuals. In obesity, an increase in white adipose tissue changes the phenotype of tissue-resident macrophages to M1, resulting in chronic inflammation. This, in turn, increases the number of immune suppressor cells (e.g., regulatory T cells and myeloid-derived suppressor cells in white adipose tissue), but inhibits the anti-tumor activity of natural killer cells. Besides, hormonal and metabolic changes caused by obesity increase the risk of cancer. The elevated levels of hormones, such as insulin and leptin, activate the mitogenic Ras/MAPK pathway, and transduce inhibitory signals of apoptotic death in cancer cells. Also, the white adipose tissue acts as an energy source for cancer cells and promotes tumor growth and metastasis by producing pro-inflammatory cytokines, adipokines, and proangiogenic factors. Overall, obesity, by increasing the white fat mass, prepares a suitable microenvironment for triggering tumor formation and inhibiting anti-tumor pathways, which increase the risk of cancers.

    Keywords: Adipose tissue, Cancer, Immune cell, Hormones, Inflammation}
  • Narges Zargar Balajam, Mahdi Shabani, Mahmoud Aghaei*, Mansoureh Haghighi, Farzad Kompani
    Background

    Acute lymphoblastic leukemia (ALL) is a malignancy with aggressive tumors of immature lymphocytes. T‑cell immunoglobulin and mucin‑domain 3 (TIM‑3) is a Type I transmembrane glycoprotein which is involved in cell proliferation. The objective of this research is to determine the TIM‑3 expression in peripheral blood (PB) and bone marrow (BM) of 80 samples of normal and ALL patients.

    Materials and Methods

    The amount of mRNA and protein of TIM‑3 measured in the BM and PB the mononuclear layer of samples by real‑time polymerase chain reaction and Western blotting.

    Results

    Our findings indicated that relative mRNA expression of TIM‑3 in PB and BM of the mononuclear layer of ALL patients was 1.7 and 5 times higher than normals, respectively. We also reported that the protein level of TIM‑3 in mononuclear cells of ALL patients was 3.2‑fold in BM and two‑fold in PB more than normals.

    Conclusion

    In conclusion, this study shows that TIM‑3 increases in ALL patients, thus the expression of TIM‑3 in tumor cells may be considered as a potential predictive factor in ALL patients, which needs to be explored in future.

    Keywords: Gene expression profiling, precursor cell lymphoblastic leukemia‑lymphoma, real‑time polymerase chain reaction, T‑cell immunoglobulin, mucin‑domain 3}
  • پانته آ حاجی میرزا شفیع سلطانی_فلورا فروزش*_مهدی شعبانی
    سابقه و هدف

    سرطان کولورکتال یکی از شای عترین سرطان ها و عامل مرگ بر اثر سرطان در جهان است. دگزامتازون، یک داروی گلوکوکورتیکوییدی و دارای خواص ضد تکثیری و ضد التهابی است که قادر به مهار رشد و القا آپوپتوز در رده های سلولی سرطان میلوما انسانی است. هدف از این تحقیق تعیین اثر این دارو روی رده سلولی HT-29 سرطان کولورکتال انسانی با تکیه بر روی بیان ژن های مسیر خارجی آپوپتوزی Fas و FasL و بیان ژن های مسیر داخلی آپوپتوزی Bax و Bcl-2 است.

    مواد و روش ها

    تحقیق به روش تجربی انجام شد. پس از کشت رده سلولی HT-29 ، سلول ها تحت تیمار با غلظت های مختلف دگزامتازون) 1/ 0 میکرومول الی 1000 میکرومول (و زمان های مختلف) 24 ، 48 و 72 ساعت قرار گرفتند. بررسی سمیت با تست MTT ارزیابی و IC50 تعیین شد. برای بررسی کمی تغییر بیان رونوشت ژ نهای Fas/FasL و RNA ،Bax/Bcl-2 ، از سلول های تیمار شده و تیمار نشده استخراج شد و پس از سنتز cDNA ، بیان رونوشت ژن ها توسط quantitative Real time-PCR ارزیابی و آنالیز داده ها با استفاده از روش لیواک سنجیده شد.

    یافته ها

    دگزامتازون در غلظت 1000 میکرومول به کاهش سلول های زنده در هر سه بازه زمانی 24 ، 48 و 72 ساعت منجرشده است، اما این غلظت بعد از 48 ساعت انکوباسیون به عنوان IC50 تعیین شد. پس از تیمار سلول ها در غلظت IC50 ، سطح بیان رونوشت ژنهای Fas و FasL در مقایسه با سلول های تیمار نشده تغییر معنا دار مشاهده نشد (p <0.05). در حالی که سطح بیان رونوشت ژ نهای Bax و Bcl-2 به طور معنا دار در مقایسه با سلول های تیمار نشده به ترتیب افزایش و کاهش یافت (p <0.05). دگزامتازون به روش وابسته به دوز و زمان روی رده سلولی HT-29 سرطان کولورکتال انسانی اعمال اثر کرده است.

    نتیجه گیری

    دگزامتازون می تواند سبب مهار رشد در رده سلولی HT-29 سرطان کولورکتال انسانی و همچنین به القا آپوپتوز از طریق مسیر داخلی منجر شود، درحالی که تاثیری روی القا آپوپتوز از طریق مسیر خارجی ندارد. بنابراین تیمار رده سلولی HT-29 سرطان کولورکتال انسانی با غلظت معینی از دگزامتازون میتواند بیان ژن های دخیل در مسیر داخلی آپوپتوز را در راستای مرگ برنامه ریزی سلول تغییر دهد.

    کلید واژگان: سرطان کولورکتال, آپوپتوز, دگزامتازون, رده سلولی HT-29}
    Pantea Hajimirza Shafiesoltani, Flora Forouzesh*, Mahdi Shabani
    Background

     Colorectal cancer is one of the most common cancers and among the most common causes of cancer death worldwide. Dexamethasone is a glucocorticoid medication which has anti-proliferative and anti-inflammatory properties that induce apoptosis and growth inhibition in human myeloma cell lines in vitro. The aim of the current study was to determine the effects of dexamethasone against human colorectal cancer HT-29 cell lines, relying on the expression of genes which are involved in extrinsic (Fas and Fasl) and intrinsic pathway of apoptosis (Bax and Bcl2).

    Materials and methods

    An experimental study was conducted.  HT-29 cell line was cultured and then treated with various concentrations of dexamethasone (from 0.1 to 1000 µM) for 24h, 48h, and 72h incubation. The cytotoxicity was measured using MTT assay and IC50 was determined. Then, RNA was extracted from treated and untreated cells and cDNA was synthesized. Gene expression was investigated using qReal-Time PCR method. Data analysis was performed using the livak method.

    Results

      Dexamethasone at 1000µM significantly inhibited the growth of treated HT-29 cells after 24h, 48h, and 72h incubation and IC50 was 1000μM after 48h. After treating cells at IC50 concentration, the mRNA expression of Fas and FasL did not change significantly in comparison with untreated cells (p <0.05), while Bax and Bcl-2 mRNA expression increased and decreased respectively in comparison with untreated cells (p <0.05). Dexamethasone was effective against human colorectal cancer HT-29 cell line in a dose -dependent manner and induced the intrinsic genes of apoptosis.

    Conclusion

      Dexamethasone can inhibit the growth of human colon cancer HT-29 cell lines and induces apoptosis through the intrinsic pathway of apoptosis, while it has no effect on the extrinsic pathway of apoptosis.

    Keywords: Colorectal cancer, Apoptosis, Dexamethasone, HT-29 cell line}
  • نجمه امیری، فلورا فروزش*، احسان ناظم الحسینی مجرد، مهدی شعبانی
    سابقه و هدف

    سدیم بوتیرات (NaBr) مهار کننده هیستون داستیلاز است که به عنوان داروی ضدسرطان امیدبخشی برای درمان سرطان های متعددی ظهور کرده است. هدف از این مطالعه، بررسی اثر NaBr بر روی تغییر بیان ژن Bid در رده سلولی سرطان کولون انسانی است.

    روش بررسی

    رده سلولی HT-29 کشت داده شد. سلول ها با غلظت های مختلف NaBr (mM25/6 الی mM200) تیمار شدند و سمیت سلولی و IC50 با تستMTT  تعیین شد. سپس تغییرات بیان ژن Bid به صورت کیفی و کمی با روش های PCR و qRT-PCR  بررسی شد. 

    یافته ها

    غلظت IC50 مناسب برای تیمار سلول های HT-29 در زمان های 24، 48 و 72 ساعت به ترتیب mM95، mM25 و mM5/12است و خاصیت ضد تکثیری NaBr وابسته به دوز و زمان است. نتایج حاصل از Real-time PCR نشان داد NaBr در غلظت IC50 می تواند سبب افزایش معنی دار  بیان ژن Bid شود (05/0p<).

    نتیجه گیری

    نتایج نشان داد NaBr باعث مهار رشد و القا آپوپتوز در رده سلولی HT-29  می شود که می تواند ناشی از افزایش بیان ژن Bid باشد. لذا تغییر بیان ژن های آپوپتوزی می تواند تحت تاثیر مهارکننده های هیستون داستیلاز تغییر کند.

    کلید واژگان: سرطان کولورکتال, ژن Bid, سدیم بوتیرات, HT-29}
    Najmeh Amiri, Flora Forouzesh*, Ehsan Nazemalhosseini, Mojarad, Mahdi Shabani
    Background

    Sodium butyrate (NaBr), a histone deacetylase inhibitor, has emerged as a promising anticancer drug for multiple cancers. The aim of this study was to investigate the effect of sodium butyrate on the changes in the expression of the Bid gene in human colorectal cancer cell line.

    Materials and methods

    HT-29 cell line was cultured. Cells were treated with different concentration of NaBr (from 6.25 mM to 200mM) for 24, 48 and 72 hours. Cytotoxicity and IC50 were evaluated by MTT assay. The effect of NaBr on Bid gene expression was examined by PCR and qRT-PCR.

    Results

    The IC50 for 24, 48, and 72 hours were 95mM, 25mM and, 12.5mM respectively. Antiproliferative activity of NaBr was dependent on time and dose manner. The results of real time PCR showed that the expression of Bid gene in treated cells with IC50 concentration increased significantly (p<0.05) in comparison with the control group.

    Conclusion

    The results showed that NaBr inhibited the growth and induced apoptosis in the HT-29 cell line which can be due to the increase in Bid gene expression. So, the change in expression of the apoptosis genes can effect by histone deacetylase inhibitors.

    Keywords: Colorectal cancer, Bid gene, Sodium butyrate, HT-29}
  • محمد امامی اردستانی، مهدی شعبانی *
    مقدمه

    به تازگی، میزان شیوع سندرم متابولیک در جوامع در حال افزایش است و از طرفی، همراهی آن با برخی بیماری ها، می تواند میزان مرگ و میر بیماران را افزایش دهد. بنابراین، مطالعه ی حاضر با هدف بررسی ارتباط سندرم متابولیک با شدت بیماری انسدادی مزمن ریوی (Chronic obstructive pulmonary disease یا COPD) بر اساس معیارهای Global Initiative for Chronic Obstructive Lung Disease 2017 (GOLD 2017) در بیماران سرپایی انجام شد.

    روش ها

    در این مطالعه ی مقطعی که بر روی 96 بیمار مبتلا به COPD مراجعه کننده به بیمارستان الزهرای (س) اصفهان در سال های 97-1396 انجام شد، شدت COPD در بیماران بر اساس معیار GOLD 2017 مشخص شد. همچنین، میزان فراوانی سندرم متابولیک، لیپید پروفایل و شاخص های آنتروپومتری در بیماران مورد بررسی قرار گرفت و ارتباط شدت های مختلف COPD و سندرم متابولیک با سایر متغیرها مورد بررسی قرار گرفت.

    یافته ها

    فراوانی سندرم متابولیک در بیماران دچار COPD، 5/86 درصد بود و همچنین، میانگین دور کمر، سطح قند خون ناشتا، فشار خون سیستول و دیاستول، شاخص توده ی بدنی و تری گلیسیری در بیماران مبتلا به سندرم متابولیک و COPD به طور معنی داری بیشتر از بیماران دچار COPD به تنهایی بود (050/0 > P). همچنین، ارتباط معنی داری بین شدت های مختلف COPD و سندرم متابولیک وجود نداشت (050/0 < P).

    نتیجه گیری

     سندرم متابولیک با شدت های مختلف COPD بر اساس نتایج مطالعه ی ما در ارتباط نبود، اما به مطالعات بیشتری در این زمینه نیاز است

    کلید واژگان: سندرم متابولیک, بیماری انسدادی مزمن ریوی, فراوانی, شاخص شدت بیماری}
    Mohammad Emami Ardestani, Mahdi Shabani *
    Background

    Recently, the prevalence of metabolic syndrome in societies is increasing. In this study, we investigated the association between metabolic syndrome and the severity of chronic obstructive pulmonary disease (COPD) based on the Global Initiative for Chronic Obstructive Lung Disease 2017 (GOLD 2017) criteria for outpatients.

    Methods

    In this cross-sectional study, 96 patients with COPD to Alzahra hospital in Isfahan, Iran, during the years 2016 and 2018 were enrolled. The severity of COPD in patients was determined based on the GOLD 2017 criteria, as well as the frequency of metabolic syndrome. Other factors such as lipid profiles, anthropometric characteristics were evaluated, and the association between severity of COPD and metabolic syndrome with other variables were studied.

    Findings

    The frequency of metabolic syndrome in patients with COPD was 86.5%. The mean of waist circumference, fasting blood sugar (FBS), systolic (SBP) and diastolic blood pressure (DBP), body mass index (BMI), and triglyceride in patients with metabolic syndrome and COPD were significantly higher than patients with COPD without metabolic syndrome (P < 0.050). Moreover, there was no significant relationship between COPD severity and metabolic syndrome (P > 0.050).

    Conclusion

    Metabolic syndrome was not associated with severity of COPD based on our findings, and further studies are needed.

    Keywords: Metabolic syndrome, Chronic obstructive pulmonary disease, Frequency, Severity of illness index}
  • Siavaah CHALABIANI, Mina KHODADAD NAZARI, Nada RAZAVI DAVOODI, Mahdi SHABANI, Masoud MARDANI, Abdolfatah SARAFNEJAD, Ali Akbar AMIRZARGAR *
    Background
    Brucellosis as a zoonotic disease is widespread among human and animal that it continues to be a major public health problem. Due to the shortage of recent epidemiologic data regarding the brucellosis distribu-tion in Iran, we convinced to evaluate the prevalence of brucellosis in provinces of Iran.
    Methods
    In this descriptive study, data were collected from brucellosis suspected patients referred to Noor Pathobiology Laboratory, Tehran, Iran from 18 out of 31 provinces of Iran during 2013-2015.
    Results
    Overall, 2635 out of 17103 attending cases (15.4%) were recognized as brucellosis patients. The most prevalent rate was found in patients aged 20-39 yr old (41%) which of them 67% were male. Patients with bru-cellosis were significantly diagnosed in spring season (Apr to late May). Among included provinces, Hamadan Province had the highest (25%) prevalence followed by Markazi and Mazandaran with 24.7% and 22.5%, respec-tively.
    Conclusion
    Brucellosis is still considered as an important infectious disease with a high prevalence in many provinces of Iran. It is necessary to implement a national brucellosis control program by increasing medical edu-cation, public knowledge and various controlling plans for preventing, controlling and eradicating of brucellosis.
    Keywords: Brucellosis, Prevalence, Zoonotic, Iran}
  • Seyyed Mehdi Jafari, Ali Nazri, Mahdi Shabani, Narges Zargar Balajam, Mahmoud Aghaei
    Galectin-9 (Gal-9), a member of animal lectins’ family, is implicated in the induction of apoptosis in various cancer cells. Here, we evaluated the anti-tumor effect of Gal-9 in OVCAR-3 ovarian cancer cells. The effect of the Gal-9 on cell viability was evaluated using MTT assays. Apoptosis was assessed using Annexin-V staining. The assessment of mitochondrial membrane potential (ΔΨm) was performed using a JC-1 probe. The activity of caspase-3 and caspase-6 were evaluated with colorimetric assay. The production of reactive oxygen species (ROS) was applied by fluorescent probe. The expression levels of Bax and Bcl-2 were assessed using western blotting. The result showed that Gal-9 inhibits cell viability. Flow cytometry analysis showed that Gal-9 induces apoptosis in ovarian cancer cells. Moreover, Gal-9 decreased ΔΨm and increased the generation of ROS and caspase-3 and caspase-6 activities in ovarian cancer cells. Moreover, Gal-9 induced expression of Bax as well as inhibited expression of Bcl-2. In conclusion, our results indicated that Gal-9 induced apoptosis in ovarian cancer cells through mitochondrial pathway.
    Keywords: Apoptosis, Gal-9, Ovarian cancer, OVCAR-3, Reactive oxygen species}
  • Abdolrahim Taheri, Mahdi Shabani, Mohammad Daghigh
    Free-span occurs normally in a pipeline at uneven seabed, dynamic seabed and pipeline crossing. Free spanning in pipeline causes Vortex Induced Vibration (VIV) fatigue, fracture and bursting. In this paper, a pipeline located in South Pars Gas Field is assessed against local buckling and VIV fatigue using probability of failure theory based on the recommended methodology by Det Norske Veritas (DNV) corresponding to different soil classes and different span length to pipeline diameter and also different water depths by applying First-Order Reliability Method (FORM) and Monte-Carlo Sampling (MCS), separately. Furthermore, the simultaneous effect of local buckling and VIV fatigue is assessed in terms of probability of failure. Finally, in order to determine the effect of each parameter on failure probability, sensitivity analysis is carried out using the alpha index.
    Keywords: subsea pipeline, probability of failure, free span, local buckling}
  • مهدی شعبانی * احمد باقری
    تا به امروز، در فقه کلاسیک امامیه و حقوق تعهدات ایران، تنها شکل موثر از وضعیت نابرابری عرفی و فاحش میان ارزش مالی تعهدات دوسویه قراردادی، گونه سنتی و آشنای پدیده حقوقی اقتصادی «غبن» دانسته شده است که از آن، به «غبن مقارن» (در زمان تشکیل قرارداد) تعبیر می شود. این پرسش مطرح است که زوال متاخر عدالت معاوضی پس از انعقاد معامله و در دوره اجرای تعهدات عقدی چه تاثیری بر روی حیات اعتباری قرارداد و یا بر میزان تعهدات نهایی دو طرف معامله خواهد گذاشت؟ سکوت و خلا نص خاص قانونی در مقررات ایران و نیز قرائت های مجمل و گاه نافی نفوذ «غبن حادث» از متون و منابع حقوق مدنی اسلام از یک سو و نیاز روابط تجاری درون مرزی و برون مرزی به حمایت حقوقی از قراردادهایی که پیوسته در معرض دگرگونی شرایط حاکم بر خود هستند، از سویی دیگر، نگارندگان را بر آن داشت که به بازخوانی اصل مشروعیت و پی آمدهای احتمالی نظریه غبن حادث در متون و منابع اجتهادی فقه امامیه بپردازند. در جستار حاضر، ضمن تلاش برای بازتعریف مطلق واقعه غبن و شناسایی موضوعی خصوص غبن حادث، جایگاه حکمی زوال حادث تعادل عوضین قراردادی، تبیین و کارایی آن در معاملات معاوضی مغابنی، بر مبنای قاعده نفی ضرر و نظریه شرط ضمنی مشروع و نافذ اعلام شده، پی آمد متناسب و عادلانه آن نیز تعدیل قضایی تعهدات از راه الزام غابن به بذل مابه التفاوت و در صورت عدم امکان تعدیل، خیار فسخ عقد برای مغبون معرفی شده است.
    کلید واژگان: قرارداد, غبن حادث, ضرر, شرط ضمنی, تعدیل تعهدات}
    Mahdi Shabani *, Ahmad Bagheri
    Up to this day, the only effective form of the condition of conventional and evident inequality between the financial value of bilateral-contractual commitments in Imāmī classical jurisprudence and law of Iran’s commitments, has been considered to be the traditional and familiar phenomenon of judicial-economical deception (ghabn), which is referred to as comparative (muqārin) deception (at the time of concluding a contract). The question is: what impact does the belated decadence of commutative justice after including a transaction and in the period of executing the contractual commitments will have on the validity span of the contract or on the rate of final commitments of the two parties? The silence and the lack of specific legal statute in Iran’s regulations as well as brief versions and sometimes versions negating the influence of “contingent deception” from the civil law sources of Islam on one hand and the needs of the interior and exterior commercial relations for legal support of the contracts that are constantly exposed to the changes governing them on the other hand, prompted the writers to reexamine the principle of legitimacy and the possible outcomes of the theory of contingent deception on the discretionary (ijtihādī) texts and sources of the Imāmī jurisprudence. In the
    present research, while attempting to give an absolute redefinition of the event of deception and thematic identification of contingent deception, the judicial status of contingent decadence of the contractual balance of counter-values are explained and its efficiency in deception-oriented exchange transactions based on the principle of denial of loss and the theory of implicit stipulation is proclaimed legitimate and influential. It’s proportionate and equitable outcome is introduced to be the judicial moderation of the commitments by way of obligating the deceiver to pay the balance and in case of impossibility of moderation, the option for the deceived to cancel the contract.
    Keywords: contract, contingent deception, loss, implicit stipulation, moderation of commitments}
  • مجید سرمدی، مهدی شعبانی*
    تسکین یکی از اختیارات شاعری است که طی آن شاعر می تواند یک هجای بلند به جای دو هجای کوتاه بیاورد؛ اما عکس اختیار تسکین (آوردن دو هجای کوتاه به جای یک هجای بلند) از نظر عروض پژوهان، صحیح نیست؛ لکن در شعر قدیم و نیز دوره متاخرتر، اشعاری دیده می شود که در آن ها از عکس اختیار تسکین استفاده شده است. عکس تسکین اگرچه ظاهرا به تقلید از شعر عرب (تبدیل مفاعیلن به مفاعلتن) اما غالبا در اوزان دوری که خاص شعر فارسی است به کار رفته است و به واسطه «واو» غیردوری، با تبدیل هجای بلند وسط مصراع به دو هجای کوتاه، وزن «مفعول فاعلاتن دوبار» را بدل کرده است به «مفعول فاعلات مفاعیل فاعلاتن» که در شعر معزی، عطار و اوحدی و به ویژه خاقانی سابقه دارد و نیز این اختیار در وزن هزج اخرب «مفعول مفاعیلن دوبار» در شعر خاقانی و قوامی مشهود است. عکس اختیار تسکین گاهی نیز در ارکان مفاعیلن و مفعولن اعمال شده و این ارکان را به ترتیب به مفاعلتن و مفتعلن بدل کرده که در شعر مولوی و حزین لاهیجی به کار رفته است
    کلید واژگان: عروض, اختیار, عکس تسکین, واو غیردوری, خاقانی}
    Majid Sarmadi, Mahdi Shabani *
    Taskin is one of authority of poesy, in which he can use a long syllable ýinstead of two short syllables, but taskin inverse choice (the two short ýsyllables instead of one long syllable) is not true, in terms of prosody ýresearchers. however, in the poetry of the old and more recent periods, ýpoetry is seen where taskin inverse choice have been usedþ.þ
    taskin inverse, although apparently in imitation of Arabic poetry ýý(transformation a Mafaeelon to Mafaelaton) but often are used in revolving ýmeters (dawri) that specific for Persian poetry and through vav (o) e gheyr e ýdawri, with transformation a long syllable center hemistich into two short ýsyllables, the meters of “ouble Mafoul o Faelaton” has changed to the ýý“Mafoul Faelat o Mafaeel o Faelaton” that as history in the lyrics of Moezzi, ýAttar and Awhadi and especially Khaghani, and also this option of meters ýHazaj e Akhrab”Double Mafoul o Faelaton” is evident in the poems of ýKhaghani & Ghavvami. Taskin inverse choice some times has applied to ýelements of Mafaylon and Mafolon and change this elements to Mafaelaton ýand Moftaelon that is used in poetry of Molavi and Hazin Lahiji.ý
    This paper concludes by examining the various poetical works that:ý
    For distinguishing whether or not the dawri of the poetries that has mixed ýmeters with dawri and nonþ Ü þdawri is relying on the couplets dominant ýmeter, First, we recognize original meter if the original meter was nonþ Ü þdawri should applied dawri for other couplets, and this is the result of ýTaskin choice usage. This blending in Mozare e Akhrab verb root meter, ýobserved in the poems of Anvari, Khaghani, Athir and Seyf, that by use of ýTaskin in the middle of some nonþ Ü þdawri verses with meters “Mafoul o ýFaelat o Mafaeel o Faelaton” changed their meter to dawri “Double Mafoul ýo Faelaton”. This subject is more fancy than musical. But if the original ýmeter was non-dawri, should verses meter that are dawri the result of ýTaskin choice usage.ý
    Sometimes, poets by using Taskin inverse choice in the middle of some ýdawri verses, and cause them to become non-dawri, and have been ýcombining two meters in a poem. The musical fancy in Hazaj e Akhrab ýmeter “Double Mafoul o Mafaeelon” is evident in Khaghani & Ghavvami’s ýlyrics and also has seen in the Mozar e Akhrab verb root meter “Double ýMafoul o Faelaton” in poetry of Moezzi, Attar and Awhadi and above all in ýKhaghani’s poetry. Taskin inverse choice is more evident in Khorasani style ýpoetry and in odes more yield from the non-dawri “vav” (o) that can be ýremoved “vav” (o) which became a fancy and writing, changed the meter to ýdawri for more melodious. In that case, the reduced heavy meter and meters ýof both lines was dawri. In sonnets more, the word of the middle verses that ýconnects the last syllable of the second pillar to the first syllable of the third ýpillar. Thus Manipulation hypothesis scribes, the “vav” (o) in the middle of ýthe hemistich, is null at least in these sonnets.ý
    Taskin inverse choice or to follow the Arab prosody or unconsciously, are ýused in Mafaeelon element in Mawlawī poetry and in poetry Mafoulon ýpillar doleful and some contemporary poets. This choice in pillar is ýpermissible under two conditions: first, that it does not become irregular ýpillar, but to become the same pillar. Such as: Mafaeelon to Mafaelaton or ýMafoulon to Moftaelon. Second, it was not be in place rhyming because ýmay changed rhyme syllables. Taskin is also for the same reason, should ýnot occur in the rhyme syllable and if does, he should be upheld in all verses ýcouple.ý
    By accepting the fact that “Mostafel o Mostafel o Mostafal o Fa” is the ýoriginal meters of quatrain, the problem of Taskin inverse choice is canceled ýin quatrain meter
    Keywords: prosody_poetrys choices_choice 2 short syllab for 1 long syllab_v_Khaqani}
  • مهدی شعبانی، مسعود محبان
    ماهیت شناسی «حدود» و بزه های شرعی مستوجب این نوع کیفر که در کنار تعزیرات، مهم ترین واکنش های کیفری به جرائم در نظام حقوق کیفری اسلام به شمار می آیند ، باوجود اهمیتشان (هم از حیث شدت مجازات و هم از حیث عنایت ویژه شریعت به حفظ مقاصدی که از سوی این گونه جرائم تهدید می شوند)، همچنان محل نظر و قابل بازخوانی می نماید. یکی از پیامدهای این بحث نظری، این که فقی هان امامی، در تعیین شمار و عنوان اسباب حدود قرائت های مختلف و آرای متکثری به دست داده اند. رسالت نخستین این جستار، واکاوی علل علمی این اختلاف است که پس از طرح و تحلیل علت های موثر ، مآلا سرچشمه اصلی در دیدگاه مختار درباره ماهیت شناسی جرائم حدی و تعریف حقوقی آن یافت شده است. در پی شناخت علل مزبور، این مهم مورد بررسی واقع می گردد که جرم های موجب کیفر حد، ضرورتا محصورند و فهرست این جرائم، توقیفی و غیرقابل افزایش یا کاهش است. در جستار فراروی، کوشیده شده تا ضرورت حصر دامنه عددی بزه های مستوجب حد، با استناد به تعریفی نوین و هم سو با مفاد نصوص کیفری شرع که از ماهیت حقوقی جرائم یادشده به دست داده می شود و نیز با استشهاد به ضوابط عام و محدودیت های شرعی وارد بر فرآیند جرم انگاری، اثبات گردد. رویکرد استدلالی این مقاله، تلاش برای تامین هم زمان معنای لغوی و مفهوم قرآنی روایی واژه حد و نیز مبناگرایی و مقصدمحوری در تفسیر نصوص و توجه به فلسفه تشریع حدود خواهد بود. تغییرات نوین قانونی در زمینه جرائم حدی نیز در جستار پیش رو، با نگاهی گذرا و نقادانه تحلیل شده است.
    کلید واژگان: حد, تعزیر, شمار حدود, حصر مصادیق حدود}
    Mahdi Shabani, Masoud Mohebban
    Studying the nature of legal punishments (ḥudūd) and legal misdemeanors deserving these kinds of punishment – which along with discretionary punishments (ta‘zīrāt) are regarded as the most important criminal reactions to crimes in Islamic criminal law system – despite their importance (both in terms of the intensity of punishment and the special favor that the religious law shows towards preserving the targets being threatened by these kinds of crimes) are still of concern and seem to be revisable. One of the outcomes of this theoretical discussion is that the Imāmī jurists have provided different readings and manifold opinions in determining the number and the titles of the causes of ḥudūd. As its primary mandate, this research is intended to explore the scholastic reasons for this disagreement to figure out – after raising and analyzing the effective causes – whether the main source has finally been found to be in the opted viewpoint concerning the study of the nature of legal punishment crimes and their legal definition. Upon identifying the above-mentioned causes, it is to examine the important notion that the crimes deserving legal punishment (ḥadd) are necessarily quantified (maḥṣūr) and the list of these crimes are subject to scriptural ruling (tawqīfī) and are not increasable or reducible. It is attempted, in the present research, to prove the necessity to quantify the numerical range of the misdemeanors deserving legal punishment with reliance on a new definition consistent with the content of the legal texts of religious law that are implied from the legal nature of the above-mentioned crimes and by attesting to the general regulations and the legal restrictions placed on the process of criminalization. The argumentative approach of this article is trying to simultaneously provide the lexical meaning and the Qur’ānic-narrative concept of the word ḥadd, as well as the fundamentalism and purposefulness in interpretation of texts and paying attention to the philosophy of legislating legal punishments (ḥudūd). The new lawful changes in legal punishment crimes have also been critically and briefly analyzed in this research.
    Keywords: legal punishment, discretionary punishment, enumeration of legal punishments, quantification of the instances of legal punishments}
  • Mahdi Shabani *, Abdolrahim Taheri
    Free-span in subsea pipelines occur at manmade supports, uneven seabed or pipeline crossing. Free spanning may induce pipeline vibration due to vortex shedding which makes pipeline susceptible to some failures such as fatigue, fracture, etc. Free spanning analysis is an important subject because fatigue is the most effective factor in reducing the pipeline design life. Free spanning analysis includes static analysis and dynamic analysis.
    DNV-RP-F105 suggests a methodology of dynamic analysis for long pipeline with multi-mode responses, but the fatigue analysis method for multi-modes is not detailed. In addition, the fatigue analysis of multi-spanning pipeline is not clear. Based on the methodology of DNV-RP-F105 fatigue life relates to natural frequencies of pipeline, the method of determination of effective natural frequencies still is not clear.
    In this paper, a fatigue analysis for multi-spanning pipeline in Persian south gas field is performed based on VIV analysis. ABAQUS FE model is developed to obtain the stress distribution and the natural frequency of each vibration mode for spanning pipeline on seabed with three multi-spans, then the fatigue analysis of VIV is carried out for the spanning pipeline based on DNV-RP-F105.
    Keywords: subsea pipelines, fatigue analysis, natural frequency, multi spanning, vortex shedding}
  • Fateme Sadri-Ardalani, Moslem Ahmadi, Azam Hemmati, Shaghayegh Emami, Samira Farid, Mohammad Mehdi Amiri, Mahmood Jeddi-Tehrani, Mahdi Shabani*, Fazel Shokri
    Background
    In addition to passive immunotherapy using anti-HER2 monoclonal
    antibodies, active immunotherapy via HER2 targeting is an interesting approach to
    inducing specific anti-tumor immune responses. We have recently reported the
    immunogenicity of HER2 subdomains following DNA immunization and HER2 protein
    boosting. In the present study, we evaluated the immunogenicity of different HER2
    extracellular subdomains for the induction of anti-HER2 antibody response in BALB/c
    mice.
    Objective
    To investigate and characterize antibody responses to human
    recombinant proteins of HER2 extracellular subdomains in immunized mice.
    Methods
    Four subdomains of HER2 extracellular domain were expressed in E.coli; subsequently,
    purified recombinant proteins were intraperitoneally injected in BALB/c mice with
    Freund's adjuvant. The anti-HER2 antibody response was detected by ELISA,
    immunoblotting and flow cytometry.
    Results
    All the four HER2 subdomains along with the full extracellular domain (fECD) were able to induce specific anti-HER2 antibodies. Although anti-HER2 subdomains antibodies could not react with eukaryotic recombinant fECD protein by ELISA, they were able to recognize this protein by immunoblotting under both reduced and non-reduced conditions. Furthermore, only the sera of mice immunized with fECD protein could recognize native HER2 on HER2 overexpressing tumor cells (>99%) by flow cytometry. Moreover, fECD immunized mice sera inhibited the proliferation of tumor cells by XTT assay.
    Conclusion
    The prokaryotic recombinant proteins of HER2 extracellular subdomains are immunogenic, yet the induced specific antibodies do not react with the native HER2 protein due to the paucity of post-translation modifications and /or distortion of the native conformation of isolated HER2 extracellular subdomains which might be potentially effective for induction of cell mediated immune response against HER2.
    Keywords: Breast cancer, HER2, Immunization, Recombinant protein}
  • نرگس زرگر بالاجمع، مهدی شعبانی، منصوره حقیقی، احمد علی بیات، محمود آقایی *
    مقدمه

    (T-cell immunoglobulin-mucin (TIM به گلیکوپروتئین های سطح سلولی و Transmembrane اطلاق می شود. 3-TIM دسته ای از TIMها می باشد که نقش مهمی در تکثیر، تهاجم و متاستاز سلول های توموری دارا است. تحقیق حاضر جهت بررسی میزان بیان ژن 3-TIM و نقش گالکتین-9 به عنوان لیگاند گیرنده ی 3-TIM در مهار تکثیر دو رده ی سلولی لوسمی لنفوبلاستیک حاد (Acute lymphoblastic leukemia یا ALL) مورد بررسی قرار گرفت.

    روش ها

    جهت بررسی میزان بیان ژن 3-TIM در رده های سلولی Jurkat و 37-KE از روش Real-time polymerase chain reaction استفاده شد. سپس، میزان مهار رشد سلولی در سلول های حاصل از کشت رده های سلولی پیش گفته، پس از تیمار با غلظت های مختلف گالکتین-9 (100-01/0 نانومولار) با استفاده از روش (MTS 3-(4،5-dimethylthiazol-2-yl)-5-(3-(carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) مورد بررسی قرار گرفت.

    یافته ها

    ژن 3-TIM در هر دو نوع رده ی سلولی Jurkat و 37-KE در سطح mRNA بیان شد. میزان بیان 3-TIM در رده ی سلولی Jurkat نسبت به KE-37، افزایش معنی داری را نشان داد (001 /0 > P)؛ به طوری که، در رده ی سلولی Jurkat میزان بیان ژن 3-TIM حدود 9/ 3 برابر در مقایسه با رده ی سلولی 37-KE بود. همچنین، در هر دو رده ی سلولی، گالکتین-9 در غلظت های بالاتر از 1 نانومولار به طور معنی داری در مقایسه با گروه شاهد اثر مهار تکثیر داشت (050/ 0 > P).

    نتیجه گیری

    مطالعه ی حاضر یک مکانیسم احتمالی را در کنترل رشد سلول های لوسمی لنفوبلاستیک حاد توسط گیرنده ی 3-TIM معرفی می کند. بر اساس این مطالعه، گیرنده ی 3-TIM در رده های سلولی Jurkat و 37-KE بیان می گردد. نتایج حاصل از این مطالعه تایید نمود که گالکتین-9 دارای اثرات مهاری در تکثیر هر دو رده ی سلولی Jurkat و 37-KE می باشد.

    کلید واژگان: T, cell immunoglobulin, mucin, گالکتین, 9, لوسمی لنفوبلاستیک حاد}
    Narges Zargar, Balajam, Mahdi Shabani, Mansoreh Haghighi, Ahmad Ali Bayat, Mahmoud Aghaei
    Background

    T-cell immunoglobulin-mucin (TIM) is a cell-surface and transmembrane glycoprotein. TIM-3 plays a pivotal role in proliferation, invasion and metastasis of tumor cells. The present study was designed to evaluate the expressions of the TIM-3 and the role of the galectin-9, as TIM-3 ligand, in the regulation of cell proliferation in human acute lymphoblastic leukemia (ALL) cell lines.

    Methods

    The expression level of TIM-3 was examined in the Jurkat and KE-37 cell lines using real-time polymerase chain reaction method. MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] viability test was used to study the cell proliferation effect of galectin-9.

    Findings

    TIM-3 mRNAs were detected in the both Jurkat and KE-37 cell lines. The expression of TIM-3 in Jurkat cell line was higher than KE-37 cell line (P < 0.001). The MTS assay revealed that galectin-9 reduced cells proliferation in a dose-dependent manner (> 1 nM) in the both cell lines (P < 0.050).

    Conclusion

    The present investigation introduced a possible mechanism for the control of acute lymphoblastic leukemia cell proliferation through TIM-3 and demonstrated that galectin-9 can inhibit the proliferation of Jurkat and KE-37 cell lines.

    Keywords: T, cell immunoglobulin, mucin, Galectin, 9, Acute lymphoblastic leukemia}
نمایش عناوین بیشتر...
بدانید!
  • در این صفحه نام مورد نظر در اسامی نویسندگان مقالات جستجو می‌شود. ممکن است نتایج شامل مطالب نویسندگان هم نام و حتی در رشته‌های مختلف باشد.
  • همه مقالات ترجمه فارسی یا انگلیسی ندارند پس ممکن است مقالاتی باشند که نام نویسنده مورد نظر شما به صورت معادل فارسی یا انگلیسی آن درج شده باشد. در صفحه جستجوی پیشرفته می‌توانید همزمان نام فارسی و انگلیسی نویسنده را درج نمایید.
  • در صورتی که می‌خواهید جستجو را با شرایط متفاوت تکرار کنید به صفحه جستجوی پیشرفته مطالب نشریات مراجعه کنید.
درخواست پشتیبانی - گزارش اشکال