دکتر ناصر عباسی
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مقدمه
سرطان پستان یکی از شایع ترین سرطان ها در زنان و دومین عامل مرگ ومیر در میان زنان است و حدود یک چهارم سرطان های زنان در کشور مربوط به سرطان سینه است. شیوع و تعداد بالای افراد مبتلا به این نوع سرطان در کشور ما ضرورت انجام تحقیقات بیشتر برای کشف سازوکارهای سرطان و ابداع روش های درمانی موثر را آشکار می سازد. سلول های دندریتیک به عنوان تامین کننده حرفه ای آنتی ژن ها، با برداشت و پردازش آنتی ژن ها، نقش مهمی در کنترل و هدایت پاسخ ایمنی در برابر بیماری های مختلف به ویژه سرطان ایفا می کنند.
مواد و روش هابرای القای سرطان سینه در موش های Balb/C از رده سلولی 4T1 استفاده شد. پس از القای تومور، حیوانات به طور تصادفی به سه گروه 8تایی تقسیم گردیدند. گروه ها شامل کنترل سالم، کنترل تومور و گروه تحت درمان با سلول های دندریتیک استخراج شده از مغز استخوان بودند. پس از ایجاد تومور قابل لمس در آن ها، هریک از آن ها با یک میلیون سلول دندریتیک دو بار به فاصله دو هفته تحت درمان قرار گرفتند. در طول دوره درمان، وزن بدن موش ها اندازه گیری شد. وزن تومور نیز اندازه گیری و نمونه بافت پستان نیز برای بررسی پاتولوژی جدا گردید؛ همچنین در طول دوره 9 روزه کشت سلولی دندریتیک، از سلول ها با استفاده از میکروسکوپ عکس برداری شد. برای تحلیل داده ها از روش آنالیز واریانس یک طرفه و آزمون دانکن در نرم افزار SPSS vol.24 استفاده گردید.
یافته های پژوهش:
نسبت وزن تومور به وزن بدن در گروه درمان با سلول های دندریتیک کاهش یافت و میزان کاهش وزن تومور در این گروه نسبت به گروه کنترل تومور جبران شد و میزان مهار رشد تومور در گروه دریافت کننده سلول های دندریتیک به طور معنی داری بیشتر بود. تعداد سلول های ایمنی در بافت تومور در گروه درمان شده با سلول های دندریتیک افزایش یافت.
بحث و نتیجه گیریبا توجه به نتایج می توان گفت که درمان با سلول های دندریتیک برای درمان تومورهای پستان باعث تقویت پاسخ ایمنی در برابر تومور می شود.
کلید واژگان: سلول های دندریتیک، تومور پستان، 4T1IntroductionA fourth of all cancers in women in the country are breast cancer, making it the most common and fatal cancer in women. Some novel approaches are being implemented to reduce the impact of cancer. Thus, this study was conducted to treat breast cancer using dendritic cells in mice.
Materials & MethodsThe study used the 4T1 cell line to induce breast cancer in Balb/C mice. After tumor induction, the mice were divided into three groups: healthy control, tumor control, and dendritic cell-treated groups. After developing palpable tumors, each group was treated with one million dendritic cells twice at a two-week interval. Body weight, tumor weight, and breast tissue samples were taken for pathological examination. Cells were photographed during the 9-day dendritic cell culture period. One-way analysis of variance (ANOVA) and Duncan's test were used in SPSS V.24 to analyze the data at the 0.05 significance level.
ResultsIn the dendritic cell treatment group, the ratio of tumor weight to body weight went down, and the amount of tumor weight loss was balanced out compared to the tumor control group. The dendritic cell receiving group also had a lot more tumor growth inhibition. The dendritic cell-treated group showed an increase in the number of immune cells in the tumor tissue.
ConclusionTreatment with dendritic cells for the treatment of breast tumors enhances the immune response against the tumor.
Keywords: Dendritic Cells, Breast Tumor, 4T1 -
Dendritic cell-based cancer immunotherapy is considered an innovative and promising approach aimed at enhancing the host's immune response to combat tumors. Additionally, IPI-549 has been identified as a first-line therapeutic option for breast cancer treatment. The objective of this research was to develop and formulate a novel therapeutic supplement by combining dendritic cells with IPI-549 (Eganelisib) for breast cancer treatment. The concurrent administration of dendritic cells and IPI-549 (DC-IPI) was utilized to treat mice and elicit immunological responses triggered by vaccination. Tumor regression and overall survival rates were evaluated across five distinct experimental groups. The administration of tumor cell lysate alongside DC-IPI resulted in a significant reduction in tumor growth and a two- to three-fold increase in the survival duration of treated mice. DC-IPI, whether decorated with mannan or not, elicited stronger responses in terms of delayed-type hypersensitivity, lymphocyte proliferation, and CD107a expression. Moreover, our findings demonstrated a reduction in IL-4 production in the supernatants of splenocyte cultures. A significant reduction in BRCA1 mRNA levels was also observed following treatment with DC-IPI. In conclusion, our results suggest that the DC-IPI antigen delivery system exhibited substantial anti-tumor efficacy in a breast cancer mouse model, representing a potential advancement in immunotherapy for human breast cancer.
Keywords: Breast Cancer, Dendritic Cells, IPI-549, BRCA-1 Gene, BALB, C Mice -
Objective(s)Alzheimer’s disease (AD), the most common cause of dementia, is one of the leading causes of morbidity and death in the world. Currently, treatment mostly used to slow down the disease progression. Herbal remedies are considered by many in the community as a natural and safe treatment with fewer side effects. Silibinin, the active ingredient of Silybum marionum, has anti-oxidant, neurotrophic and neuroprotective characteristics. Therefore, here, the effect of different doses of Silibinin extract on oxidative stress and expression of neurotrophic factors was investigated.Materials and MethodsForty eight male Wistar rats were randomly divided into sham, lesion; Aβ1-40 injection, lesion-treatment; Aβ1-40 injection followed by different doses of silibinin (50, 100, 200 mg / kg) through gavage and lesion-vehicle group; Aβ1-40 injection + vehicle of silibinin. Morris water Maze (MWM) was done 28 days after the last treatment. Hippocampal tissue was removed for biochemical analysis. Production of nitric oxide (NO) and reactive oxygen species (ROS), expression of BDNF/VEGF and cell viability were measured using Griess, fluorimetry, Western blotting and MTT techniques.ResultsDifferent concentrations of silibinin improved behavioral performance in animals. Higher doses of Silibinin could improve memory and learning function through MWM. Also, increasing the concentration of silibinin resulted in decreased ROS and NO production in a dose-dependent manner.ConclusionConsequently, silibinin may act as a potential candidate for alleviating symptoms of AD.Keywords: Alzheimer’s disease, amyloid, BDNF, Oxidative stress, Silibinin, VEGF
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Background
Every year, drug poisoning is the most prevalent reason for referring patients to medical centers. This study aimed to evaluation of morphine, methadone, digoxin, and dronabinol poisoning in Shahid Mostafa Khomeini Hospital in Ilam.
MethodsIn this In this Cross-sectional study, patient samples suspected of morphine, methadone, digoxin, and dronabinol poisoning referred to the toxicology laboratory of Ilam University of Medical Sciences were analyzed using the HPLC method, and the results were analysed using SPSS software.
ResultsResults showed that the percentage of drug use is greater in men than in women. The highest percentage of morphine and methadone poisonings were detected in those under the age of 40, whereas the highest percentage of digoxin poisonings were recorded in those over the age of 80. As a result, the average age of digoxin users was substantially greater in men than in women. Methadone consumers showed significantly greater blood levels than others. In addition, there was a significant difference (P<0.01) in blood levels between men and women who used morphine.
ConclusionIn general, it is important to understand the status of drug poisoning with drugs such as morphine, methadone, digoxin, and dronabinol, as well as the prognosis associated with the treatment process of such poisoning.
Keywords: Poisoning drug, Dronabinol, Digoxin, Methadone, Morphine -
زمینه و هدف
دیابت یک بیماری متابولیک با افزایش سطح قند خون می باشد. سلول های غلاف کننده بویایی (OECs) قادر به بیان انواع فاکتور های رشد می باشند و کیناز وابسته به اینتگرین(ILK) نیز در تنظیم فرآیندهای مختلف سلول نقش دارد. لذا در این مطالعه اثرات غلظت های پایین و بالای سیلیبینین بر میزان بیان فاکتور رشد اندوتلیال عروقی (VEGF) و ILK در شرایط گلوکز نرمال و بالا در سلولهای OEC مورد بررسی قرار گرفته است.
مواد و روش هادر این مطالعه سلول های OEC از مخاط بویایی نوزاد موش صحرایی استخراج و کشت داده شد. غلظت های پایین (µM 5و1) و بالا(µM 75و 50) سیلیبینین در شرایط گلوکز نرمال و بالا به محیط کشت سلول ها اضافه گردید. در پایان مطالعه، میزان بیان پروتیین های VEGFو ILK با استفاده از وسترن بلات تعیین گردید. تجزیه و تحلیل داده ها با استفاده از روش ANOVA انجام شد.
یافته هادر شرایط گلوکز بالا، غلظت های پایین سیلیبینین سبب حفظ بیان معنی دار و غلظت های بالای آن سبب کاهش معنادار و وابسته به دوز ILK گردید. اما در شرایط گلوکز بالا غلظت های پایین سیلیبینین سبب کاهش معنادار بیان VEGF و غلظت های بالای آن سبب افزایش معنادار و وابسته به دوز بیان VEGF گردید.
نتیجه گیریگلوکز بالا، سبب افزایش بیان ILK و VEGF در سلول های OEC می گردد و درمان با غلظت های پایین سیلیبینین سبب حفظ بیان ILK و کاهش بیان VEGF می گردد. لذا به نظر می رسد که غلظت های پایین سیلیبینین، درمانی موثر در حفاظت سلول ها از سمیت سلولی ناشی از هایپرگلیسمی دیابت از طریق تثبیت میزانILK و کاهش میزان VEGFمی باشد.
کلید واژگان: سیلیبینین، کیناز متصل به اینتگرین، فاکتور رشد، سلول های غلاف کننده بویایی، گلوکز بالاBackground and AimDiabetes is a metabolic disease with high blood sugar levels. Olfactory ensheathing cells (OECs) are able to express various growth factors and integrin-linked kinase (ILK) plays an important role in regulating various processes of cells. In this study, we investigated the effects of silybinin on the expression of vascular-endothelial growth factor (VEGF) and ILK under normal and high glucose conditions in OECs.
Materials and MethodsIn this study, OECs were extracted from the olfactory mucosa of neonatal rats and cultured. Low (1,5M) and high (50,75 µM) concentrations of silybinin were added to the cell culture media under normal and high glucose conditions. At the end of the study, we measured the expression of VEGF and ILK proteins using western blot technique. Data were analyzed by ANOVA test.
ResultsUnder high glucose conditions, low concentrations of silybinin maintained expression and at high concentrations silybinin caused a dose-dependent decrease in ILK significantly. However, under high glucose conditions, low concentrations of silybinin significantly decreased expression of VEGF but high concentrations of silybinin caused a significant dose- dependent increase in VEGF expression.
ConclusionHigh glucose condition increased ILK and VEGF expression in the OECs, and treatment with lower concentrations of silybinin maintained ILK expression and decreased VEGF expression. Therefore, it seems that lower concentrations of silybinin can be effective in protecting cells from cytotoxicity due to diabetes hyperglycemia by stabilizing ILK and reducing VEGF levels.
Keywords: Silybinin, Integrin-link kinase, Growth factors, Olfactory ensheathing cells, High glucose -
Objective
The aim of the present study is to identify, report and compare native medicinal plants that are used for treatment of depression, anxiety and stress, anorexia, insomnia and headache and migraine in the Ilam city, Ilam province, Iran.
MethodsA standard questionnaire was used to obtain information regarding traditional therapeutic uses of plants that are effective on common psychiatric disorders, such as depression, anxiety and stress, anorexia, insomnia, headache and migraine. Data collection instruments included a questionnaire and interview. The study population also included 37 perfumers. First, a complete list of the perfumers of Ilam city was extracted from the Food and Drug Vice-Chancellor of Ilam University of Medical Sciences. The questionnaires included questions on the personal information of perfumers and a list that contains the no names of native plants, but included their used organs, usage, and traditional therapeutic effect. The results showed that twenty-two plant families are effective in treating common psychiatric disorders.
ResultsFabaceae plant family with 7 plants and Lamiaceae plant family with 5 plants were the most effective plant families used for the treatment of common psychiatric disorders. Also, the most plant organs used for the treatment of the above disorders included aerial parts (38%), leaves (14%), fruits (14%), flowering branches (14%), and seeds (12%).
ConclusionNative medicinal plants of Ilam city are traditionally used to treat common psychiatric diseases and can be used as natural and effective treatments of disorders such as depression, anxiety and stress, anorexia, insomnia, headache and migraine.
Keywords: Medicinal plants, Ethnobotany, Ilam, Treatment -
The aim of the study was to produce a Polyvinyl chloride-based membrane containing a polymer imprinted with a valproic acid molecule which was directly coated on a graphite electrode to determine the amount of valproic acid in aqueous samples. With the dispersion of molecularly imprinted polymer particles in dioctyl phthalate plasticizer as a solvent mediator, this potentiometric sensor was designed and after that it was embedded in a polyvinyl chloride matrix. The designed electrode showed a near-Nernstian slope of 54.1 ± 1 mV decade-1 in the concentration range of 10-6-10-2 M and a detection limit of 10-6 M with a response time of about 40 seconds for valproic acid and can be used for 2 months without divergence changing the potential. The fabricated electrode, in the pH range among 3.5-8.5, indicates the good sensitivity to valproic acid relative to the other ions. Finally, this electrode can be used as an indicator electrode in determining the concentration of valproic acid in valproic acid tablets.
Keywords: Valproic Acid, Molecularly imprinted polymer, Ion-selective electrode, Coated graphite -
Finding more efficient agents with fewer side effects for the treatment of burns has been a concern for researchers. The current study aims to assess Aloe vera (L.) Burm.f. and Vitis vinifera L. extract combination (AVEC) effects on wound healing in rats compared with silver sulfadiazine (SSD). Identification of individual polyphenols of the plant extracts was performed by HPLC. The animals were randomly divided into twelve groups. Standard second-degree burn wounds were induced on the back. Groups were treated with Aloe vera (A.V) and Vitis vinifera (V.V) creams at concentrations of 0.5, 1, 1.5, and 2% with ED50 values of 1.5 ± 0.02 and 1.4 ± 0.08 %, respectively. The other group was treated with an AVEC cream (1.5%). The samples of burned skin tissue were collected from the rats for histopathological examination. To evaluate the expression of VEGF and TGFβ1, the real time-PCR method was used. Kaempferol was only detected in Aloe. This study revealed that AVEC cream exhibits significant wound healing activity. VEGF and TGFβ1 had a significant increase in the AVEC. Based on our findings, AVEC cream can be a therapy of choice for burn injuries.
Keywords: Aloe vera, Vitis vinifera, Second-degree burns, High performance liquid chroma-tography (HPLC), Vascular endothelial growth factor(VEGF) -
Enhancing microbial resistance to antibiotics and their probable side effects leads to the popularity of medicinal plants, so the need for novel antibacterial compounds with plant origin is felt more than ever. The object of the recent study was to assess the antibacterial property of Stachys lavandulifolia Vahl aqueous extract (SLVAE) on Escherichia coli O157:H7 (EC), Pseudomonas aeruginosa (PA), Staphylococcus aureus (SA) and Bacillus subtilis (BS). The aqueous extract was obtained using a rotary evaporator. Agar disk and well diffusion methods were used to investigate the antibacterial property of the SLVAE. In the agar disk diffusion test, distilled water was used as a negative control whereas streptomycin, oxytetracycline, gentamicin, difloxacin, chloramphenicol, ampicillin, and amikacin were used as positive controls. Macro broth tube test was accomplished to specified Minimum Inhibitory Concentration (MIC). Statistical comparison among groups means were done through one-way ANOVA followed by Duncan’s post-hoc test. P ≤ 0.01 was considered as significant. Indeed compared with many standard antibiotics, the extract showed the higher antibacterial property. Also SLVAE with 125, 15/62 and 7/81 mg/ml concentrations has prevented the growth of EC, SA/BS and PA, respectively, and with 125, 62/5 and 15/62 mg/ml concentrations has destroyed EC, SA/BS and PA, respectively (p≤0.01). SLVAE had the most antibacterial activity on PA. In conclusion the obtained results indicate the antibacterial effect of SLVAE on EC, PA, SA, and BS. It seems that this plant can be utilized for the treatment of some bacterial infections as an antibiotic.
Keywords: Stachys lavandulifolia Vahl, aqueous extract, antibacterial property -
Ethnomedicinal plants are considered recent resources for producing components that could treat wounds. Stevia rebaudiana is a native plant in Iran, which the plant has been used as an anti-inammatory, antioxidant, antibacterial, antifungal, antiparasitic, antiviral, and antidiabetic agent in Iran. In this study, the authors describe the property of aqueous extract of S. rebaudiana on wound healing markers in Sprague-Dawley male rats. Full-thickness excisional wounds (2×2 cm) was induced on the back of 32 rats. In this study, rats were randomly divided into four main groups (n=8), untreated (control) and treated with 1ml basal cream, 1ml tetracycline (3%), and 1ml S. rebaudiana aqueous extract 10% for 10 days. Animals of each group were euthanized at 10 days post-injury (DPI) and wounds were assessed through gross and histopathological analyses. Treated animals with S. rebaudiana demonstrated a considerable decrease in the wound area during the experiment compared to control, basal cream, and tetracycline groups. Parameters such as healing tissue alignment and epithelialization indicated substantial changes when compared to other groups. Moreover, treatment with S. rebaudiana decreased the number of wound surface area, lymphocytes and macrophages and it increased the number of blood vessels and fibrocytes compared to other groups at 10 days. Thus, the present research shows the wound healing effect of the S. rebaudiana, suggesting to use as a therapeutic supplement. Additional in vivo researches and clinical trials would be needed to justify.
Keywords: Stevia rebaudiana, extract, wound healing property, rat -
Using a solid-phase extraction for the determination of VPA, this study aimed to prepare a valproic acid (VPA) imprinted silica gel adsorbent by surface molecular imprinting technique. VPA-imprinted silica adsorbent was characterized by FTIR spectroscopy. The VPA adsorption from solutions was studied in SPE mode. All influenced parameters on adsorption efficiency, including the elution concentration, MIP amount, VPA concentration, pH and salting effect, sample flow rate, column performance repeatability (relative standard deviation) were optimized independently. The prepared adsorbent showed significant adsorption capacity and selectivity for VPA. In the condition of sodium hydroxide solution (0.1 M), MIP polymer (250 mg), VPA (10-4M), sample flow rate (1 ml min-1), pH around 2-6 in the presence of 4 % NaCl, total VPA retention showed better reproducibility than 5%. Recovery of VPA was about 94.6 to 98.1% and the relative standard deviation was less than 5.69%. These results demonstrated that the prepared adsorbent can be used to measure VPA in biological samples.
Keywords: Valproic Acid, Silica gel, Surface molecular imprinting, Solid-phase extraction -
In this study, from June 2019 to May 2019 aerial parts of Scrophularia striata Boiss. were collected from Ilam city and those of Scrophularia deserti Delile from Dehloran city, Ilam province in western Iran. The aerial parts of the medicinal plants were pulverized. The essential and volatile oils were extracted by headspace solid-phase microextraction (HS-SPME) and their chemical compounds analyzed by Gas chromatography–mass spectrometry (GC-MS). Using HS-SPME, 68 and 49 chemical compounds were identified from S. striata and S. deserti, respectively. Spathulenol (18.41%) was the highest chemical compound of the essential oil of S. striata, followed by caryophyllene oxide (15.38%), linalool (11.85%), alpha-terpineol (8.34%), trans-caryophyllene (4.44%) and geraniol (3.10%). The most important identified compounds from S. deserti were caryophyllene oxide (15.38%), linalool (11.85%), alpha-terpineol (8.34%), trans-caryophyllene (4.44%) and geraniol (3.10%). The most important chemical compounds of S. deserti essential oil included alpha-pinene (25.54%), alpha-phellandrene (19.60%), beta-myrcene (11.29%) and trans-caryophyllene (6.78%). Results show major constituents of this two plant include with a high amount of Spathulenol and caryophyllene oxide has high pharmaceutical and healthful value.
Keywords: Scrophularia striata Boiss., Scrophularia deserti Delile, Essential oil, HS-SPME, GC-MS -
Stomach ache is one of the most chronic and debilitating abdominal pains. Medicinal plants are one of the most accessible sources for treating diseases like gastrointestinal disorders. In this review, we investigate and report the most important medicinal plants recommended by Persian medicine for treating stomach aches and comparing them with their proven effects in modern medicine. Gastric pain was probed in Persian medicine reliable textbooks such as Cannon of Medicine (Ibn Sina), Tibbe-Akbari (Muhammad Akbar Arzaani ), The Complete Art of Medicine (Kitab Kamil as-Sinaa at-tibbiyya) (Haly Abbas), Explanation of insults and signs (Kermani) Tohfeh Al-Mo’menin (Seyed Mohammad Momen Tonekaboni), and some notes were taken. The results showed that Panicum miliaceum, Punica granatum, Solanum nigrum, Calicotome spinosa, Tamarindus indica, Cuminum cyminum, Prunus domestica, Matricaria recutita, Viola odorata, Plantago psyllium, Berberis vulgaris, Pyrus communis, Linum usitatissimum, Vitis vinifera were the most important plant sources used in treating the stomach ache according to Persian medicine. The findings of this study showed that the useful effects of many recommended plants in Persian medicine are confirmed by recent scientific researches and are reliable
Keywords: Pain, Medicinal plants, Gastrointestinal disorders, Persian medicine -
Introduction
Agonists of the Mu-opioid receptors (MOR), such as morphine are lengthily used for the treatment of moderate to pain, depression and anxiety. But the dose involved achieving adequate pain relief often elicits multiple unwanted side effects, including addiction and tolerance. Opioids produce their actions at a cellular level by activating MOR. These receptors are distributed throughout the central nervous system (CNS). The target of this study was the effect of Smyrnium cordifolium extract (SCE) on the hippocampus Cornu Ammonis 1 (CA1) aria MOR compared to clonidine.
Materials and methodsExtract of the aerial parts S.cordifolium was extracted by Soxhlet method. Addiction was created using the subcutaneous injections of morphine for 7 days. To evaluate the effects of SCE, the mice were divided up 5 groups. The first group (Control) received just morphine. The 2th group received morphine and Clonidine (0.2mg/kg). Groups 3, 4 and 5 were treated morphine and SCE (E1, E2 and E3). In all groups, on the seventh day 30 min after naloxone injection, their brains were perfusion with formaldehyde and removed for immunohistochemical investigation.
ResultsThe present immunohistochemical of the CA1 hippocampus study showed that group E1, there is a significant difference in MOR optical density compared to the control group at the level (P<0.05) and relative to the CLO group at the level (P<0.001). However, in groups E2, and E3 the MOR optical density increased compared to the control group and had a significant difference in level (P<0.001) and did not have a significant difference compared to the CLO group.
ConclusionThe study showed that with increasing S.cordifolium extract concentration, the optical density of MOR in the hippocampus increased, and this increase was dose-dependent. This increase in the CA1 hippocampus MOR optical density may be due to endocytosis or desensitization of MOR in neurons.
Keywords: Hippocampus, Mu-opioid receptor, Mice, Smyrnium cordifolium -
In Iranian traditional medicine Quercus brantii var. Persica (Oak) is considered warm- and dry-natured. It is used for gastric pain, ulcer, anemia, hemorrhoids and rickets, burns, indigestion, diarrhea, and infection. Oak is readily available and has a variety of medicinal and health effects in both traditional and modern remedies. The main objective of this research is Identification in oak compounds, using Headspace-solid phase microextraction (HS-SPME) and Gas chromatography–mass spectrometry (GC-MS). Oak fruits were collected from Argavan Valley, Ilam, west of Iran, after drying and powdering, chemical compounds were isolated by HS-SPME and identified by using GC-MS method. The results analysis of Quercus brantii revealed the existence of 41 chemical compounds. Major chemicals included β- pinene oxide (8.65%), Tetrahydro- linalyl acetate (8.51%), 2-methoxy –p-cresol (7.65%), 2-methoxy pyrazine (5.08%), 2-acetyl pyridine, 2,3-dimethyl pyrazine (4.42%), Trans- linalool oxide (3.79%), β- pinene(3.66%), Verbenone (3.43%), and Terpin-4-ol (3.27%).Keywords: Quercus brantii var. persica, Ilam, chemical compounds, GC-MS
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مجله علمی دانشگاه علوم پزشکی کردستان، سال بیست و چهارم شماره 6 (پیاپی 104، بهمن و اسفند 1398)، صص 120 -129زمینه و هدف
پوکی استخوان از رایج ترین بیماری های استخوانی است که به دلیل عدم تعادل فعالیت سلول های استئوبلاست و استئوکلاست ایجاد می گردد. استئو پروتگرین (OPG) با اتصال به گیرنده فعال فاکتور هسته ای کاپا بتا لیگاند (RANKL) سبب مهار سلول های استئو کلاست می گردد. تعادل در نسبت OPG/RANKL نقش مهمی در بازسازی استخوان دارد. در مطالعه حاضر، تاثیر مومیایی بر میزان تکثیر سلولی، بیان OPG و RANKL در سلول های شبه استئوبلاست MG63 در مقایسه با داروهای شیمیایی مورد بررسی قرار گرفت.
روش بررسیدر این مطالعه تجربی، تاثیر غلظت های 100،200 و 300 μg/ml عصاره مومیایی بر تکثیر سلولی، بیان OPG و RANKL در سلول های MG63 در گروه های آزمایش، کنترل مثبت و منفی بررسی گردید. تجزیه و تحلیل داده ها با استفاده روش آماری ANOVA انجام شد.
یافته هاافزایش معنی داری در تکثیر سلول ها بعد از مواجهه با دوز های 100 و 200 μg/ml مومیایی مشاهده شد. دوز 200 μg/ml سبب کاهش معنی دار بیان RANKL و افزایش معنی دار بیان OPG و نسبت OPG/RANKL در مقایسه با گروه کنترل منفی گردید. دوز 100 μg/ml مومیایی اگر چه همانند دوز 200 μg/ml عمل نمود؛ اما میزان تاثیر بر هیچ کدام از متغیرها معنی دار نبود. دوز 300 μg/ml نیز تاثیر معکوس غیر معنی داری را نشان داد.
نتیجه گیریغلظت 200 μg/ml مومیایی تاثیر قابل توجهی بر بیان دو عامل مهم بازسازی استخوان دارد، لذا به نظر می رسد افرادی که در معرض پوکی استخوان قرار دارند می توانند از این ماده به عنوان جایگزین داروهای شیمیایی استفاده نمایند.
کلید واژگان: مومیایی، پوکی استخوان، استئو بلاستScientific Journal of Kurdistan University of Medical Sciences, Volume:24 Issue: 6, 2020, PP 120 -129Background and AimOsteoporosis is one of the most common bone diseases that is caused by an imbalance between the activity of osteoblasts and osteoclasts. Osteoprotegerin (OPG) plays an active role in inhibiting osteoclasts by binding to the receptor activator of nuclear factor kappa-B ligand (RANKL). The balance in the OPG/RANKL ratio is important in bone remodeling. The current study investigated and compared the effects of mumie extract and chemical drugs on cell proliferation, expression of OPG and RANKL in MG63 cells.
Materials and MethodsThe effects of 100, 200 and 300 μg/ml of mumie extract on cell proliferation, expression of OPG and RANKL in MG63 cells were investigated in experimental groups, positive and negative control groups. Data were analyzed by ANOVA test.
ResultsSignificant increases were observed in the proliferation of MG63 cells after exposure to 100 and 200 μg/ml concentrations of mumie extract. 200 μg/ml concentration of the extract significantly decreased the expression of RANKL and increased the expression of OPG. It also increased OPG/RANKL ratio significantly in the experimental groups, compared to those in the negative control groups. Although the effects of 100 μg/ml and 200 μg/ml concentrations were similar to each other, they showed no significant effects on the variables. 300 μg/ml concentration of the extract showed a reverse and insignificant effect.
Conclusion200 μg/ml concentration of mumie extract had a significant effect on the expression of two important factors in bone remodeling. Therefore, individuals susceptible to osteoporosis can use mumie extract as an alternative to chemical drugs.
Keywords: Mumie extract, Osteoporosis, Osteoblasts -
مقدمهگیاه آوندولSmyrnium cordifolium در پزشکی سنتی برای درمان اضطراب، درد، بی خوابی و عوارض سندرم ترک اعتیاد که یکی از نگرانی های هر جامعه ای است استفاده می شود. مصرف داروهای اوپیوئیدی به صورت مکرر سبب ایجاد وابستگی جسمی و تحمل می شود. وابستگی را می توان توسط علائم ناشی از قطع مصرف ناگهانی دارو و با تجویز یک آنتاگونیست دارو و یا هر دو ارزیابی کرد. هدف از این مطالعه بررسی اثرات مهاری عصاره هیدروالکلی این گیاه بر اختلالات ناشی از سندرم ترک اعتیاد در مقایسه با کلونیدین است.مواد و روش هادر این پژوهش تجربی از 48 موش سوری با وزن تقریبی 30-25 استفاده شد و به 6 گروه 8 تایی تقسیم و به مدت هفت روز با دریافت مورفین دوبار در روز معتاد شدند. در روزهای اول و دوم دوز مورفین 5/2 میلی گرم بر کیلوگرم وزن بدن بود و این دوز در روزهای پس از آن دو برابر شد تا در روز ششم به میزان کل 40 میلی گرم بر کیلوگرم رسید. در روز هفتم حیوانات آخرین تزریق مورفین 50 میلی گرم بر کیلوگرم را به صورت زیرجلدی دریافت کردند. گروه اول (سالین): این گروه غیر وابسته به مورفین بودند و با دوز معادل، نرمال سالین دریافت کردند. گروه های دوم، سوم، چهارم تحت درمان با دوزهای مختلف عصاره هیدروالکلی آوندول: این گروه ها مورفین و عصاره هیدروالکلی آوندول (SCE) با دوزهای (mg/kg 300 ، 200، 100) را به صورت گاواژ دریافت کردند. گروه پنجم کلونیدین: این گروه از موش ها هم زمان مورفین و کلونیدین با دوز mg/kg 2/0 دریافت کردند. گروه ششم کنترل: این گروه از موش ها فقط مورفین دریافت کردند. در تمام گروه ها در روز هفتم 30 دقیقه بعد از تزریق نالوکسان، علائم سندروم محرومیت آن ها ثبت گردید. تجزیه و تحلیل نتایج از طریق آزمون آماری آنالیز واریانس یک طرفه و مقایسه گروه ها از طریق آزمون توکی در سطح معنی داری P<0. 05 انجام گرفت. یافته های پژوهش: نتایج نشان داد که اثر عصاره هیدروالکلی آوندول بر تعداد پرش در گروه های SCE100نسبت به گروه کلونیدین کاهش معنی دار در سطح (P<0. 05) و SCE200کاهش معنی دار در سطح (P<0. 01) پیدا کرد. در گروه SCE300 نیز کاهش معنی دار در سطح (P<0. 001) نسبت به گروه کلونیدین مشاهده شد. هم چنین اثر عصاره هیدروالکلی آوندول بر میانگین تعداد ایستادن روی دوپا در گروه SCE200 بی تاثیر و SCE200 در مقایسه با گروه کلونیدین کاهش معنی دار (P<0. 05) پیدا کرد. در گروه SCE300 نیز کاهش معنی دار نسبت به گروه کلونیدین در سطح (P<0. 01) داشت. اثر عصاره هیدروالکلی آوندول بر میانگین تعداد دندان قروچه در گروه های SCE100 نسبت به گروه کلونیدین کاهش معنی دار در سطح (P<0. 05) و SCE200کاهش معنی دار در سطح (P<0. 01) پیدا کرد. در گروه SCE300 نیز کاهش معنی دار در سطح (P<0. 001) نسبت به گروه کلونیدین مشاهده شد. بحث و نتیجه گیری: با توجه به نتایج حاصل از این مطالعه عصاره هیدروالکلی آوندول موجب کاهش علائم سندرم ترک اعتیاد در موش های وابسته به مورفین شد. احتمالا، تعدیل علائم سندرم ترک توسط فعال نمودن مسیرهای اپیوئیدی، گابارژیک و سروتونینرژیک باشد. البته جهت تعیین مکانیسم دقیق اثر عصاره آوندول نیاز به مطالعات بیشتری است.کلید واژگان: آوندول، سندرم ترک اعتیاد، مورفین، موش سوریIntroductionSmyrnium cordifolium is used in traditional medicine to treat anxiety, pain, insomnia and complications of drug addiction syndrome, which is one of the concerns of every community. The use of opioid drugs repeatedly causes physical dependence and tolerance. Dependence can be assessed by the symptoms of sudden withdrawal of the drug by administering a drug antagonist or both. The purpose of this study was to investigate the inhibitory effects of hydroalcoholic extract of this plant on the disorders caused by the addiction withdrawal syndrome in comparison with clonidine. Materials & Methods: In this experimental study, 48 mice (25-30 gr) were used and divided into 6 groups of 8 and were addicted during seven days. Saline group: this group was nonmorphine-dependent and received normal saline with the equivalent dosage. Groups 2, 3 and 4 treated with S. cordifolium hydroalcoholic extract (SCE): these groups received morphine and SCE (100,200,300 mg/kg) as gavage. Group 5 (clonidine): This group of mice received morphine and clonidine (0.2 mg/kg). Group 6 (control): this group of mice received just morphine. In all the groups, signs of withdrawal syndrome were recorded on the seventh day 30 minute after naloxone injection. The results were analyzed by one-way ANOVA and Tukey’s test at a significant level of P <0.05. Findings: The results of this study showed that the effect of extract on the number of jumping in the SCE100 compared to the clonidine group decreased significantly (P<0.05) and SCE200 decreased significantly (P<0.01). In the SCE300 group, there was a significant decrease in this regard (P<0.001) compared to the clonidine group. Also, the effect of SCE on the maen number of rearing was ineffective in the SCE100 group, and SCE200 decreased significantly (P<0.05). In the SCE300 group, there was a significant decrease in this respect (P<0.01) compared to the clonidine group. The effect of extract on the number of teeth chatering in the SCE100 group decreased significantly compared to the clonidine group (P<0.05) and SCE200 decreased significantly (P<0.01). In the SCE300 group, there was a significant decrease in this level (P<0.001) compared to the clonidine group. Discussion & Conclusions: Regarding the results of this study, SCE was capable of reducing the signs of opiate withdrawal in morphine-dependent mice. It is likely to modify the symptoms of the syndrome by activating opioid, gabanergic and serotonergic pathways. However, further studies are needed to determine the exact mechanism of the effect of SCE.Keywords: Mouse, Morphine, Smyrnium cordifolium, Withdrawal syndrome
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IntroductionThe purpose of this study was evaluating the effect of Smyrnium cordifolium extract (SCE) and curzerene (Cur) on withdrawal syndrome in mice compared with clonidine.MethodsHigh-performance liquid chromatography (HPLC) was used to determine the active ingredients of S. cordifolium. To evaluate the effects of SCE and Cur, 64 mice were divided into 8 equal groups. Groups 1, 2 and 3 were treated Cur (0.03, 0.06, 0.12 mg/kg, respectively). Groups 4, 5 and 6 were treated with SCE (100, 200, 300 mg/kg, respectively). The seventh group received just morphine. Group 8 received morphine and clonidine (0.2 mg/kg).ResultsThe results of this study showed that Cur was the most important ingredient in the extract of the plant, and the hydroalcoholic extract yield of S. cordifolium was 17.55% (w/w). The dose of 100 mg/kg of extract (SCE100) and 0.03 mg/kg curzerene (Cur1) (P < 0.05), dose of 200 mg/kg of extract (SCE200) and dose of 0.06 mg/kg curzerene (Cur2), (P < 0.01), dose of 300 mg/kg of extract (SCE300) and dose of 0.12 mg/kg of curzerene (Cur3) (P < 0.001) decreased the symptoms compared to clonidine. Doses higher than 300 mg/kg of extract and 0.12 mg/kg of Cur had fatal effects. All doses of SCE and Cur in comparison with the control group at significant level (P < 0.001) reduced the number of jumping, rearing and teeth chattering in morphine-dependent mice.ConclusionThe findings suggest that SCE and Cur are capable of reducing the symptoms of withdrawal syndrome and their effectiveness may be more than clonidine in reducing the addiction withdrawal syndrome, which may have human therapeutic potential.Keywords: Addiction, Curzerene, Mice, Smyrnium cordifolium, Withdrawal syndrome
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مقدمهضایعه نخاعی منجر به نقص های عملکردی غیر قابل بازگشت در بیماران می شود. پیش آگهی بد این ضایعه انگیزه تحقیق جهت یافتن یک روش درمانی مناسب برای این آسیب مزمن می باشد. سلول درمانی، یکی از مهم ترین روش های درمانی ضایعه نخاعی می باشد و استفاده از سلول های غلاف کننده بویایی(OECs) نتایج امیدوارکننده ای را نشان داده است. لذا هدف از انجام این مطالعه بررسی تاثیر پیوند سلول های غلاف کننده بویایی بر بهبود عملکرد حرکتی فاز تاخیری ضایعه نخاعی در موش های صحرایی می باشد.مواد و روش هادر این مطالعه 18 سر موش صحرایی نر در چهار گروه کنترل، شم، ویکل و درمان تقسیم بندی شدند. در گروه شم فقط عمل لامینکتومی در مهره T9 انجام شد و در سه گروه دیگر بعد از لامینکتومی، ضایعه ایجاد گردید. در گروه های ویکل و درمان یک هفته پس از ضایعه به ترتیب محیط کشت بدون یا حاوی سلول تزریق گردید. در گروه کنترل هیچ گونه مداخله ای صورت نگرفت. جهت کشت سلول از مخاط بویایی نوزاد هفت روزه موش صحرایی استفاده شد. ارزیابی حرکتی حیوانات نیز با استفاده از تست BBB (Basso، Bresnahan and Beattie) انجام شد.
یافته های پژوهش: مقایسه نتایج هفته دوم تا پایان مطالعه نشان دهنده اختلاف حرکتی معنی دار بین گروه های دریافت کننده پیوند سلولی با گروه کنترل بود(P<0.05).بحث و نتیجه گیرینتایج مطالعه، نشان دهنده تاثیر مثبت سلول های OEC بر بهبود عملکرد حرکتی در فاز تاخیری ضایعه نخاعی در موش های صحرایی می باشد.کلید واژگان: ضایعه نخاعی، سلول های غلاف کننده بویایی، فاز تاخیری، عملکرد حرکتیIntroductionSpinal cord injury (SCI) causes constant irreversible functional deficits. Poor prognosis of such a disease prompts scientists to work on an effective way of treatment. Stem cell transplantation provides a promising strategy for such researchers. Using olfactory ensheathed cells (OECs) has, so far, indicated very good results. Hensce, the purpose of this study was to evaluate the effectiveness of transplanted OECs on functional recovery of delayed phase of SCI in rats.Materials and MethodsIn this survey, eighteen adult male wistar rats were divided into sham, control, vehicle, and treatment groups. Sham group received only laminectomy in the T9 segment of spinal cord, while in other groups, contusion model was induced following laminectomy.7 days after injury, DMEM medium alone or with OECs was injected to the vehicle and treatment groups, respectively. For cell culture, the olfactory mucosa of 7-day-old male wistar rats was used. Locomotor behavior of animals in all the groups was evaluated by BBB, (Basso, Bresnahan and Beattie) test.
Findings: Comparison of the results by the second week to the end of the study illustrated significant changing differences between the OECs receivers and the control group, (pDiscussion &ConclusionOur investigation demonstrated a positive impact of the OECs on functional recovery in the delayed phase of SCI.Keywords: spinal cord injury, olfactory ensheathed cells, delayed phase, functional recovery -
Introduction
The involvement of secreted frizzled-related protein5 (SFRP5) and adiponectin, two important adipokines produced by adipocytes, in cardiovascular diseases demand further assessment. Therefore, in this study the relation of the adipokines and atherosclerosis was evaluated in Rat.
Materials and methodsFor the study, thirty male Wistar rats were divided into 2 groups (each group contain 15 rats): Control group, received a normal diet and the high cholesterol diet (HCD) group which received an additional 2% cholesterol and 0.5% cholic acid for 15 weeks. At the end of treatment, HCD-induced atheroma plaques were observed by hematoxylin and eosin staining of aortic tissue sections. Furthermore, serum levels of SFRP5 and adiponectin in the two groups of rats were measured by immunoassay and their relationships with the development of atherosclerotic plaques in the experimental group were analyzed.
ResultsThe serum level of SFRP5 and adiponectin was significantly decreased in HCD rats compared with the control group (P<0.05). There was also an inverse relation between the serum level of the two adipokines and atherosclerotic plaque formation (P<0.05).
ConclusionSerum levels of SFRP5 and adiponectin are decreased in rats fed with high cholesterol diet, highlighting the involvement of the two adipokines in atherosclerosis.
Keywords: High cholesterol diet, Atherosclerotic plaque, Adiponectin, SFRP5, Rat -
هدفلوتئولین یک مشتق گیاهی مهم می باشد، این ماده دارای اثرات ضد التهابی، مهار رشد سلولی و القا آپوپتوز و مهار متاستاز است. سرطان معده یکی از شایع ترین بیماری های موجود در جهان بوده و متاستاز در این بیماری شیوع بسیاری داشته است و تشخیص دیر هنگام این بیماری موجب مرگ بیمار می گردد. پروتئین های کافیلین، اکتین و دی نوکلئوتید فسفات کیناز از جمله پروتئین های موثر در ایجاد متاستاز و هم چنین مرگ سلولی می باشند.مواد و روش هادر این مطالعه به بررسی اثر غلظت های بالای لوتئولین بر روی سلول های سرطانی معده پرداخته شد بدین منظور ابتدا سلول ها در محیط In vitro کشت شده و سپس به مدت 48 ساعت تحت تاثیر دارو قرار گرفتند. سپس سلول ها جمع آوری شده و کل پروتئین آن ها استخراج گردید پروتئین های استخراج شده با استفاده از روش الکتروفورز دو بعدی از نظر جرم مولکولی و pI جداسازی شدند سپس تعیین توالی اسید آمینه با روش MALDI-TOF انجام گردید.یافته هادر این مطالعه مشخص شد که میزان رشد سلول های سرطانی با استفاده از لوتئولین کاهش می یابد، بدین معنی که مرگ سلولی افزایش می یابد. بر اساس نتایج به دست آمده از شناسایی نقاط پروتئینی ارسال شده برای انجام MOLDI-TOF mass spectrometry مشاهده گردید که بیان سه پروتئین کافلین، اکتین و نوکلئوتید دیفسفات کیناز پس از استفاده از لوتئولین کاهش یافته اند.نتیجه گیریدر این مطالعه مشاهده گردید که هر سه پروتئین ذکر شده در بالا در مهار متاستاز و هم چنین در مرگ سلولی ناشی از لوتئولین نقش مهمی داشته اندکلید واژگان: سرطان معده، کافلین، اکتین، نوکلئوتید دیفسفات کیناز، الکتروفورز دو بعدیKoomesh, Volume:19 Issue: 3, 2017, PP 611 -618IntroductionLuteolin is an important plant extract. This shows anti-inflammatory, inhibition of cell growth, induction of apoptosis and inhibition of metastasis. Gastric cancer is one of the most common cancers in the world. Also metastasis is widespread in this kind of cancer and late diagnosis is a cause of patient's death. Cofilin, actin and nucleoside-diphosphate kinases (NDPK) are important in cell death and metastasis. In this study the effect of luteolin on MKN-45 gastric carcinoma cells was evaluated.Materials And MethodsAt first the cells were cultured and then for 48 hours were cultured with the drug concentration. Then the cells where collected and their protein were extracted and analyzed using 2D electrophoresis and separated on the basis of their molecular mass and PI. After that these samples were used for determine the amino acid sequence by MOLDI-TOF.ResultsThe growth rate of MKN-45 inhibited under influence of luteolin, this means increasing Apoptosis. Based on the results presented here by identification of protein spots by MOLDI-TOF mass spectrometry the expression of three protein cofilin, actin and NDPK has been decreased by luteolin.ConclusionIt seems that the anti- tumoral effect of luteolin is expressed through three proteins cofilin, actin and NDPK in gastric cancer cellsKeywords: Luteolin, Stomach Neoplasms, Cofilin, Actins, Nucleoside-Diphosphate Kinase, Electrophoresis
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Introduction
Spinal cord injuries (SCI) lead to permanent irreversible functional deficits. Poor prognosis of patients is the motivation of searching a treatment for the chronic injury. Planting stem cells provides us with a promising strategy. In the meanwhile, the use of olfactory ensheathing cells (OECs) has shown very good results. This study aims at evaluating the effect of transplanted OECs on functional recovery of acute SCI in rats.
Materials and methodsIn this study, eighteen adult male Wistar rats weighting approximately 210 ± 10 gr were used to study spinal cord injury. They were randomly divided into four groups: Sham (n = 3), Control (n = 6), Vehicle (n=3) and Treatment (n=6). In the Sham Group, only laminectomy was performed in the area of T9 spinal cord. In three groups of Control, vehicle and Treatment, after laminectomy, spinal cord contusion model was performed using the Weight drop technique. Immediately after the injury, 10μl Dulbecco's Modified Eagle Medium (DMEM) alone or with 106 cells were injected to vehicle and Treatment Group animals. For culturing cells, the olfactory mucosa of 7-day-old male Wistar rats was used. Motor function of animals in all groups, was evaluated in the first 48 hours daily and then weekly for eight weeks.
ResultsComparing the results of the second to eighth week of the study showed significant differences in the group receiving the OECs with the control group (P<0.05).
ConclusionThe results indicate a positive influence of the olfactory ensheathing cells in functional improvement of spinal cord injury in the acute phase of injury.
Keywords: Spinal cord injury, Olfactory ensheathing cells -
Introduction
The aim of this work was to evaluate the effects of four different concentrations of Aloe vera extract on healing of second degree burns in male Wistar rats.
Materials and methodsBy an experimental study 42 male Wistar rats were divided into 7 equal groups. The burn injury was made on the back of all rats, according to standard methods. The burned areas in the group1: were left without any intervention, group 2: were treated topically with eucerin, group 3: were treated with SSD and groups 4-7 were covered with 0.5%, 1%, 1.5%, 2% Aloe vera extract in eucerin (basal cream) twice a day, respectively. 21 days later the rats were sacrificed and samples of burnt skin tissue were collected for histological examinations. The parameters were evaluated to be considered for review included the number of hair follicles, sebaceous glands of angiogenesis, acute inflammation (severe infiltration of neutrophils) and the formation of epithelial layers.
ResultsDiagram of healing levels and reduction rats of wounds' sizes in 3th week indicated that the former was reduced more significantly in groups 3, 6 and 7 than in groups 1 (P<0.005) and 2 (P<0.01). Histological findings showed that burn healing was significantly better in groups 6 and 7 than the groups 1 and 2 at the day 21.
ConclusionIt could be concluded that concentration of 1.5% and 2% of Aloe vera extract have an effective role in the treatment of burn wound healing.
Keywords: Aloe vera, SSD, Second degree burn -
BackgroundClinical evidence indicates the diabetes-induced impairment of osteogenesis caused by a decrease in osteoblast activity. Flavonoids can increase the differentiation and mineralization of osteoblasts in a high-glucose state. However, some flavonoids such as luteolin may have the potential to induce cytotoxicity in osteoblast-like cells. This study was performed to investigate whether a cytoprotective concentration range of luteolin could be separated from a cytotoxic concentration range in human MG-63 osteoblast-like cells in high-glucose condition.MethodsCells were cultured in a normal- or high-glucose medium. Cell viability was determined with the MTT assay. The formation of intracellular reactive oxygen species (ROS) was measured using probe 2’,7’ -dichlorofluorescein diacetate, and osteogenic differentiation was evaluated with an alkaline phosphatase bioassay.ResultsROS generation, reduction in alkaline phosphatase activity, and cell death induced by high glucose were inhibited by lower concentrations of luteolin (EC50, 1.29±0.23 µM). Oxidative stress mediated by high glucose was also overcome by N-acetyl-L-cysteine. At high concentrations, luteolin caused osteoblast cell death in normal- and high-glucose states (IC50, 34±2.33 and 27±2.42 µM, respectively), as represented by increased ROS and decreased alkaline phosphatase activity.ConclusionOur results indicated that the cytoprotective action of luteolin in glucotoxic condition was manifested in much lower concentrations, by a factor of approximately 26 and 20, than was its cytotoxic activity, which occurred under normal or glucotoxic condition, respectively.Keywords: Luteolin, Human osteoblast, like MG, 63 cells, High glucose, Oxidative stress, Alkaline phosphatase
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هدف. این مطالعه با هدف بررسی زمان شروع تزریق ترومبولیتیک در بیماران با انفارکتوس حاد میوکارد و عوامل مرتبط با آن انجام شد.
زمینه. انفارکتوس حاد میوکارد یکی از شایع ترین علل مرگ و ناتوانی افراد در دنیای امروز و در ایران می باشد. علت عمده سکته قلبی، تشکیل لخته خون روی پلاک آترواسکلروز در عروق کرونر است. تجویز سریع داروهای ترومبولیتیک در این بیماران می تواند نجات بخش باشد، زیرا عامل زمانی در اثربخشی این درمان بسیار مهم است.
روش کار. این مطالعه یک پژوهش مقطعی از نوع توصیفی تحلیلی است که در آن، 98 بیمار با انفارکتوس حاد میوکارد بستری در مراکز درمانی منتخب شهر رشت از طریق نمونه گیری در دسترس در سال 1393 انتخاب شدند. ابزار بررسی شامل فرم ثبت اطلاعات دموگرافیک جهت دستیابی به اطلاعات فردی اجتماعی بیماران و پرسشنامه پژوهشگرساخته جهت بررسی عوامل بالینی، موقعیتی و شناختی بود. جمع آوری داده ها از طریق پرونده و مصاحبه با بیماران صورت گرفت. تحلیل داده ها در نرم افزار SPSSنسخه 21 با استفاده از آزمون های آماری غیرپارامتری من ویتنی و کروس کالوالیس انجام شد و سطح معنی داری، 0/05 در نظر گرفته شد.
یافته ها.میانگین فاصله زمانی شروع علائم بالینی تا تزریق ترومبولیتیک 247/2 دقیقه با انحراف معیار 182/4 بود. بیشترین تاخیر، مربوط به تصمیم گیری بیمار برای اقدام به درمان و کمترین تاخیر، مربوط به زمان داخل بیمارستانی بود. عوامل اصلی مرتبط با تاخیر مراجعه بیماران شامل نداشتن سابقه ناراحتی قلبی (0/001p=)، نداشتن آگاهی درباره علائم و نشانه های بیماری (0/0001≥p)، جنسیتزن (0/026p=)، داشتن بیماری دیابت (0/001p=)، سطح سواد پایین (0/003p=)، سطح درآمد پایین (0/044p=)، درد خفیف (0/001p=) و مصرف خودسرانه دارو توسط بیمار (0/003p=) بود. علت اصلی تاخیر، عدم آگاهی از علائم و نادیده گرفتن اهمیت آن ها بود.
نتیجه گیری. با توجه به مناسب نبودن فاصله زمانی بین شروع علایم بیماری تا تزریق ترومبولیتیک در بیماران نیاز است برنامه های آموزشی برای افزایش آگاهی درباره علایم بیماری و اهمیت درمان سریع با داروهای ترومبولیتیک مورد توجه قرار گیرد تا بتوان فاصله زمانی شروع علائم بالینی تا تزریق ترومبولیتیک را کاهش و اثربخشی این داروها را افزایش داد و به این ترتیب، مرگ و ناتوانی ناشی از این بیماری کاهش یابد.کلید واژگان: زمان تاخیر، انفارکتوس حاد میوکارد، ترومبولیتیکAim. The purpose of this study was to determine factors influencing the time interval from the onset of clinical symptoms to thrombolytic infusion in patients with acute myocardial infarction
Background.Acute myocardial infarction is one of the most common causes of death and disability all over the world including Iran. The major cause of myocardial infarction, is the clot of blood in the coronary atherosclerotic plaques. Immediate administration of thrombolytic therapy in these patients can be life-saving.
Method. This study was a cross-sectional descriptive-analytical study in which 98 patients with acute myocardial infarction hospitalized in selected Rasht therapeutic centers were recruited by convenience sampling in 2014.Data collection instrument included demographic information form and researcher-made questionnaire to obtain patient's clinical, situational and cognitive factors. Data were collected through patients medical records and interview. Data were analyzed in SPSS version 21 using non-parametric Mann-Whitney and Kruskal Wallis tests and PFindings. The mean time interval from the onset of symptoms to the beginning of thrombolytic infusion was 247.2±182.4 minutes.In this study, the most pre-hospital delay was related to making decision for care seeking and in-hospital delay time was the least one. The patients had delay in referring to the hospital mainly due to the following: negative history of previous heart disease) p=0.001), lack of awareness about the signs and symptoms of the disease )pConclusion. The time interval from the onset of symptoms to thrombolytic infusion in patients with acute myocardial infarction was not satisfactory. It is necessary to provide required training programs for increasing the individuals awareness about the symptoms of the disease and the importance of treatment with thrombolytic drugs, as soon as possible, in order to minimize the time delay, thereby, increasing the efficiency of treatment, and ultimately reducing the mortality and disability of patients.Keywords: Delay time, Acute myocardial infarction, Thrombolytic therapy
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