Burtonwinkel6840

Background and purpose Breast cancer is the most commonly occurring cancer in women around the world. Despite new advances in cancer therapy, breast cancer remains a disease with high morbidity and mortality. Snake venom is a poisonous mixture of different molecules, such as carbohydrates, nucleosides, amino acids, lipids, proteins, and peptides. Previous studies demonstrated that some snake venoms showed in vitro anti-cancer effects. In this study, the effects of the Iranian snake (Vipera raddei kurdistanica) venom on breast cancer cells were investigated. Experimental approach The effect of increasing concentrations of snake venom on breast cell viability was assessed by trypan blue, MTT, and lactate dehydrogenase measurements. Apoptosis was detected and quantified by fluorescent staining and DNA fragmentation assay. The expression level of some apoptotic-related genes was investigated using real-time polymerase chain reaction (RT-PCR). The Western blotting method was also used to detect the protein expression profiles in the cells. Findings / Results After treatment for 24, 48, 72, and 96 h, the cell viability was significantly reduced in a time- and dose-dependent manner (P 0.05). Apoptosis was significantly increased (P less then 0.05). The RT-PCR and western blot data confirmed the increase of apoptosis in cells treated with venom. Conclusion and implications These data suggested that the vipera raddei kurdistanica venom had a cytotoxic property via activation of apoptosis in breast cancer cells. Copyright © 2020 Research in Pharmaceutical Sciences.Background and purpose Research on new drugs with a natural source and low side effects is a priority in pharmacology studies. The present study was conducted to investigate the anti-inflammatory and anti-angiogenesis effects of bee pollen extract in the air pouch model of inflammation. Experimental approach To achieve this goal, male rats were moderately anesthetized and then 20 and 10 mL of sterile air were subcutaneously injected into the intrascapular area of the back of the rat on first and third days, respectively. On day 6, inflammation was induced by intrapouch injection of carrageenan. Normal saline in the control group and bee pollen methanolic extract (50, 100, and 200 mg/pouch) were administered at day 6, simultaneously with carrageenan, and then for 2 consecutive days only normal saline and the extracts were injected. Following sacrificing the rats the pouch was opened and the exudate volume, leukocyte accumulation, granulation tissue weight, vascular endothelial growth factor (VEGF), interleukin 1beta, and tumor necrosis factor alpha (TNF-α) concentrations were determined 3 days after induction of inflammation. In order to investigate the angiogenesis, the granulation tissue was removed, homogenized in the Drabkin's reagent, and then centrifuged. The supernatant was filtered and the hemoglobin concentration was determined using a spectrophotometer. Results Bee pollen extract significantly decreased the exudate volume, leukocyte accumulation, granulation tissue weight, angiogenesis, VEGF, and TNF-α concentration. Conclusion and implications The findings of the current study revealed that bee pollen methanolic extract has an anti-inflammatory and anti-angiogenesis effect, which could be attributed to the inhibition of VEGF and TNF-α production in the inflammatory exudates. Copyright © 2020 Research in Pharmaceutical Sciences.Background and purpose Obesity is a global health problem and also a well-known risk for many diseases. Although some synthetic drugs have been marketed for the treatment of obesity, natural remedies may be considered as safe and cost-effective alternatives. Lac (Kerria lacca Kerr) is a product from animal origin and is sold as seedlac or shellac. This drug is very famous among Unani practitioners for its antiobesity effects. The aim of the present study was to evaluate the antiobesity potential of lac in rats. Experimental approach The effect of lac on rats fed with a high-fat diet (HFD) was investigated through determination of the changes in body weight, and serum levels of leptin. In addition, the effect of lac on total cholesterol, triglyceride (TG), low-density lipoprotein-cholesterol (LDL-C) and high-density lipoprotein-cholesterol (HDL-C) was studied. Male Wistar rats (170-220 g) were divided into eight groups; a control group with normal diet, the HFD group received a HFD, and the experimental groups received the HFD containing 0.1, 0.2, and 0.4% (w/w) of seedlac or 0.1, 0.2, and 0.4% (w/w) of shellac for 12 weeks. GSK-3 beta pathway The body weight of each rat was measured once a week. At the end of the experiment, animals were sacrificed and serum concentrations of cholesterol, TG, low-density lipoprotein-cholesterol, high-density lipoprotein-cholesterol, and leptin were determined. Results The study showed that seedlac and shellac significantly prevented increasing body weight and the levels of serum leptin were decreased in treated groups compared with HFD group. Also, shellac decreased TG level and both shellac and seedlac exerted a significant increase in HDL-C concentration. Conclusion and implications Lac had weight-reducing properties and could be a promising alternative for controlling obesity. Copyright © 2020 Research in Pharmaceutical Sciences.Background and purpose Breast cancer (BC) is one of the major causes of female cancer-related death. It has recently been demonstrated that metabolic reprogramming including alteration in lipid metabolism is indicated in various types of cancer. The enzymes of the acyl-coenzyme A synthetase long-chain family (ACSLs) are responsible for converting fatty acids to their corresponding fatty acyl-coenzyme A esters which are essential for some lipid metabolism pathways. ACSL4 is one of the isoforms of ACSLs and has a marked preference for arachidonic and eicosapentaenoic acids. The objective of this study was to evaluate ACSL4 expression, its prognostic significance, and its correlation with p53 tumor suppressor in BC patients. Experimental approach In this study 55 pairs of fresh samples of BC and adjacent non-cancerous tissue were used to analyze ACSL4 expression, using real-time polymerase chain reaction and immunohistochemistry (IHC) staining. The expression of other studied variables was also examined using the IHC technique.