فهرست مطالب atefeh raesi vanani

Blended electrospun nanofibrous mats containing black pomegranate peel extract (BPPE) were prepared using different proportions of polyvinylpyrrolidone (PVP) and polycaprolactone as the filament-forming polymers. The electrospinning process was conducted by simultaneously injecting PVP and polycaprolactone spinning solutions from two opposite sides on a rotary collector. The films were characterized in morphology, mechanical features, water vapor transmission rate, swelling properties, and drug release profile. The uniform white porous nanofibrous mats were achieved using the optimized method. As the concentration of PVP in the formula increased, the average diameter of the fibers increased, and fibers containing spindle bodies appeared. Though, the moisture content is one of the most essential issues with a wound dressing to promote the healing process, excessive water absorption by PVP produced highly erodible mats with weak tensile strength and elongation. The higher content of polycaprolactone created narrower and more uniform fibers and improved the mechanical features and water swelling properties of the blended mats. Furthermore, the nanofibrous membrane composed of a 70:30 polycaprolactone/PVP weight ratio resulted in a more sustained drug release. The favorable properties mentioned above, along with the wound healing effect of BPPE, make it an attractive candidate for application in wound dressing products.

Candida infections constitute a large group of diseases, so today the need for low-harm antifungal agents is felt more than ever. Securigera Securidaca L. is a medicinal plant with antimicrobial, anti-pest, anti-parasitic and anti-fungal properties. Therefore, the aim of this study was to determine the anti-candida effects of microemulsion of ethanolic and methanolic extracts of Securigera Securidaca on different strains of Candida.

In this laboratory study, ethanolic and methanolic extracts of Securigera Securidaca and twin 80 were used to make microemulsions. After examining the physicochemical characteristics (viscosity and pH), the well diffusion method was used to investigate the anti-yeast effect of the formulation on Candida strains.

Microemulsions in concentrations of 0.01% of Securigera Securidaca extracts showed significant anti-candidal properties. These microemulsions had the highest inhibitory effect against Candida albicans.

Synthesized microemulsions based on Securigera Securidaca plant extract have good stability and showed high anti-yeast properties against Candida strains.

Black pomegranate (Punica granatum L.) is a native plant of East Asia, which traditionally has been used as a folk medicine to treat many diseases.

This research investigated the possible protective effects of hydroalcoholic extract of black pomegranate peel extract (BPPE) on oxidative hepatotoxicity induced by tert-butyl-hydroperoxide (t-BHP) in Wistar rats.

The research was carried out on animals randomly assigned to five groups. In the negative control group, 5 mL/kg of normal saline was given orally. In the positive control group, the same amount of normal saline was administered orally for 5 days, and a single dose of t-BHP was injected on the 6th day. In the test groups, 100, 200, and 400 mg/kg of BPPE was administered orally for 5 days, and then rats were injected with a single dose of t-BHP on the 6th day. The rats were euthanized 24 hours after the last injection. Serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) were determined from blood samples. Liver tissue was sampled to measure the level of glutathione (GSH), malondialdehyde (MDA), and catalase (CAT). Hematoxylin and eosin (H & E) staining and histological examination were performed on partial liver samples preserved in 10% formalin.

Pretreatment with BPPE at doses of 200 and 400 mg/kg significantly (P < 0.05) reduced ALT, AST, ALP, and MDA levels and increased GSH level and CAT activity. Histopathology examinations revealed that BPPE significantly improved the histological changes in comparison to the positive control group.

The results of this research demonstrate the capability of supplemented BPPE to reduce the oxidative hepatotoxicity induced by t-BHP.

The purpose of this study was to investigate cytotoxicity and membrane toxicity effects induced by Mesobuthus eupeus venom (MEV) on the HT-29 cell line. To determine the in vitro cytotoxicity via MTT assays, HT-29 (as cancer cell line) and Hek-293T (as normal cell) were treated through different concentrations of MEV, and cytotoxicity effects were then measured through assessment of mitochondrial membrane potential (ΔΨm), reactive oxygen species (ROS) generation, and apoptosis induction. The colony formation assay was performed to measure the antiproliferative effect of MEV on HT-29 cells. Nuclei alterations were also observed during apoptosis following DAPI staining. Besides, atomic force microscopy (AFM) was used to detect alterations in morphology and ultrastructure of the cells at a nanoscale level. According to MTT and clonogenic assays, MEV caused a significant decrease in cell viability and proliferation of HT-29 cells while it did not have any impact on normal cells and the IC50 value was found to be 10 µg/ml. Induction of apoptosis was also confirmed by flowcytometric analysis in HT-29 cells. Moreover, the results indicated that MEV had led to a suppression of proliferation and induction of apoptosis through increased ROS and depolarization of mitochondria. Furthermore, AFM imaging demonstrated apoptosis cell death after being treated with MEV in HT-29 cells. This study showed that MEV had an antiproliferative effect on HT-29 cells by inducing apoptosis through the mitochondria signaling pathway. These findings suggested that MEV could be used as a promising natural remedy for cancer treatment.

 Asthma is the most common respiratory disease that has increased in prevalence worldwide during the last decade and causes an estimated 250,000 deaths annually. Due to adverse effects of chemical medicines, patients are seeking alternative therapy for management of asthma. This review aims at medicinal properties of Iranian traditional medicine and potential uses of these plants as antiasthmatics (both extrinsic and intrinsic).

 Information was sourced from Iranian traditional medicine textbooks and scientific databases, such as PubMed, Science Direct, Google Scholar, SCOPUS, SID, IranDoc and MagIran. The data search was up-to-date as of October 31, 2017.

This review reveals significant ethnobotanical information on medical plants to manage asthma from literature, which consists of botanical name, part used, preparation and administration. According to the main traditional Persian medicine texts Crocus sativus, Carum Carvi, Nigella sativa, Myrica sapida, Portulaca oleracea, Rosa damascene, Viola odorata and Zingiber officinale were the most efficacious medicinal plants for the improvement of asthma.

Iran has a precious traditional plant-based knowledge on healthcare and important scientists such as Razi and Avicenna used a lot of plants and plant extracts for treatment a large number of diseases. This study represents some pharmacological and phytochemical reports available on medicinal plants using for treatment asthma and their underlying molecular mechanisms. Due to no scientifically proven cure for asthma, this review introduces many traditional herbs that can be used for asthma treatment.

Candida species are opportunistic fungi, capable of causing acute and chronic infections in the gastrointestinal tract, vagina, and oral mucosa, among which Candida albicans is the most important species. The Securigera securidaca L. is used as an antiseptic to treat some diseases in traditional Iranian medicine. The aim of this study was to evaluate the antimicrobial activity of S. securidaca extracts and vaginal gel against different Candida species.

Antifungal effects of different extracts and vaginal gel of S. securidaca were investigated against Candida species. By using well diffusion test, different concentrations of the collected S. securidaca extracts and vaginal gel were examined to test their antifungal activity against C. albicans, C. parapsilosis, and C. krusei.

The ethanol extract and vaginal gel with the ethanol extract of S. securidaca showed the most anti-fungal activity against all three strains.

The S. securidaca extract had a significant inhibitory effect on the different species of Candida; however, the highest inhibitory effect was found against C. albicans. In order to treat candidiasis, more research is required to check the efficacy of this plant in this domain.

Drug abuse is one of the major socio-medical problems of our time with a global scope. Abusing street drugs is on the rise among adults and is considered as a public health concern. In addition, limited studies are available in this regard. The aim of this study was to investigate the frequency of street drug poisoning in the Razi Hospital of Ahvaz in Iran during 2008-2013. This is an epidemiological cross-sectional study based on hospital information. All admitted cases with street drug poisoning were included during 2008 to 2013 (70 patients). Data were analyzed by SPSS software using descriptive statistics and Chi-square. In the current study, out of 70 cases aged 13-53 years old, the highest frequency of abusers was related to 30 years of age, and male/female ratio was 4 to 1. Among the drugs used, methamphetamine accounted for the highest rate. In this study, 55.7% of the cases needed to be admitted to the intensive care unit and 2 deaths were observed. The most common symptom among poisoned patients includes loss of consciousness and the least common symptom is respiratory distress. According to the results, it can be concluded that the poisoning will be rarely fatal in case of dangerous exposure, if they are under supervision of emergency medical attentions, including the careful management of airways and respiratory failure, hypotension monitoring, seizure and impaired management of body temperature.

Recognized as a distinguished environmental and global toxicant, Bisphenol A (BPA) affects the liver, which is a vital body organ, by the induction of oxidative stress. The present study was designed to investigate the protective effect of quercetin against BPA in hepatotoxicity in Wistar rats and also, the activity of mitochondrial enzymes were evaluated. To this end, 32 male Wistar rats were divided into four groups (six rats per group), including control, BPA (250 mg/kg), BPA + quercetin (75 mg/kg), and quercetin (75 mg/kg). The BPA-induced alterations were restored in concentrations of alanine aminotransferase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), and aspartate aminotransferase (AST) due to the quercetin treatment (75 mg/kg) (all P<0.001). While the levels of mitochondrial membrane potential (MMP), reactive oxygen species (ROS), and malondialdehyde (MDA) decreased by the quercetin treatment in the liver mitochondria (P<0.001), Catalase (CAT) and glutathione (GSH) increased (P<0.001). According to the results, the potential hepatotoxicity of BPA can be prevented by quercetin, which protects the body against oxidative stress and BPA-induced biochemical toxicity. Moreover, the reproductive toxicity of BPA after environmental or occupational exposures can be potentially prohibited by quercetin.

The heavy metal pollutions were accumulated in aquatic animals such as fish. Whereas consumption of canned fish is increased in many countries, contaminated fish meat would make a hazard to food security and public health. In this study, the levels ofiron and chromium were measured in canned fish products in in Khuzestan, Iran, in 2015.
Forty-six of canned fish composite samples were analyzed for levels of iron and chromium after dry digestion and then determined by atomic absorption spectrometry.
The mean concentrations of A and B canned brandsfor iron were 4.6504348 and 0.1908696 and for chromium were 1.36030435 and 0.67629565, respectively. There were significant differences in the iron and chromium levels between two brands of canned fishes (P According to US EPA health criteria for carcinogens, there was no health risk to chromium in canned fish.