The effects of hesperetin on apoptosis induction andinhibition of cell proliferation in the prostate cancer PC3 cells

ntroduction: Prostate cancer is the second leading cause of cancer-related deaths and the mostcommon cancer diagnosed in men in the United States and Europe. Hesperetin, a member of thef lavonoids with antioxidant property, is found in fruits such as oranges and red fruits. This study was undertaken to evaluate the effects of hesperetin on apoptosis induction and inhibition of cell proliferation in the prostate cancer PC3 cells.Methods: PC3 cell line was cultured in standard condition. The cells were exposed to differentconcentrations of hesperetin (0-1000 μM) for 48 hours. Cell viability was measured by MTT assay.Apoptosis induction was assessed by Annexin V-FITC by flow cytometry analysis.Results: The PC3 cells exposed to hesperetin (0-1000 μM) exhibited an IC (inhibitoryconcentration of 50) about 450 μM. At different concentrations of hesperetin (400, 450 and 500µm), the apoptosis increased slightly (not significant) in treated PC3 cells compared to the controlgroup (5.4, 7.8 and 9.1 respectively vs. 4.2).Conclusion: These results clearly show that hesperetin can lead to inhibition of PC3 cellsproliferation.&nbsp

Alteration of T cell subtypes in beta-thalassaemia major: Impact of ferritin level

Introduction: Oxidative damage and regular antigenic stimulation are main factors in accelerating immunosenescence. The present study was conducted to investigate new concepts of early immunosenescence in thalassaemia patients. aterials and Methods: Twenty seven beta-thalassaemia major patients and a group of matched healthy volunteers aged 10-30 years in Shahrekord, Iran were recruited into the study. Ferritin level was determined and CD4 or CD8 T cells were analysed versus phenotyping markers, CD27, CD28, CD57 and CCR7, by flowcytometry. Data were analysed by Mann-Whitney and Spearman’s correlation coefficient test in SPSS 11.5. Results: Absolute lymphocytosis and partial decrease in T cells were observed in the patients. CD4+CD57+ and CD4+CCR7- T cells were significantly higher, whereas CD8+CD27+ and CD8+CCR7+ T cells were partially higher in patients. A negative correlation was observed between ferritin level and number of CD8+CD27+ and CD8+CCR7+ T cells, whereas the correlation was positive between ferritin level and number of CD57+ T cells. Conclusion: Moderate alteration of T cell repertoire and increase in CCR27-, CCR7-, and CD57+ T cells could reflect antigenic stimulation, decline in naïve T cells, and being closer to terminally differentiated cells. Effect of iron overload is potentially explained by positive correlation of blood transfusion and ferritin level with frequency of CD3+CD27- and that of ferritin with frequency of CD57+ T cells

Factor XIIIA-V34L and factor XIIIB-H95R gene polymorphisms in Shahrekord, 2010, I.R.Iran

زمینه و هدف: تعدادی از پلی مورفیسم­های ارثی فاکتور های انعقادی با پاتوژنز ترومبوآمبولی وریدی و سایر پیامد­های جانبی آن ارتباط دارد. با توجه به اینکه اطّلاعات محدودی از فراونی این پلی مورفیسم­ها در جمعیّت­های ایرانی در دست است، لذا این مطالعه با هدف بررسی دو مورد از پلی مورفیسم­های فاکتور 13 یعنی XIIIA - V34L و XIIIB-H95R در جمعیّت سالم انجام شد. روش بررسی: در این مطالعه مقطعی 150 فرد سالم اهداکننده خون در شهر شهرکرد که سابقه­ای از ترومبوآمبولی وریدی نداشتند، شرکت کردند. تعیین ژنوتیپ با خون وریدی گرفته شده با EDTA برای پلی مورفیسم­های مورد نظر با روش PCR-RFLP انجام شد. یافته ها: 51 مورد (34) هتروزیگوت VL و و 8 نفر هموزیگوت LL برای زیر واحد A َ فاکتور 13 بودند. 26 نفر (33/17) و 1 نفر (67/0) به ترتیب هتروزیگوت و هموزیگوت RH و RR از زیرواحد B فاکتور 13 بودند. 67/48 از افراد مورد مطالعه حداقل یکی از پلی مورفیسم های فوق را دارا بودند و موردی از هموزیگوت هر دو پلی مورفیسم با یکدیگر وجود نداشت. نتیجه گیری: فراوانی پلی مورفیسم های مورد مطالعه ی فاکتور 13 در افراد سالم تا حدی مشابه نتایج موجود از نژاد قفقازی و کاملاً متفاوت از نتایج مطالعات محدود انجام شده در چین و نیز در سیاهپوستان بود. این موضوع می تواند به شباهت ها یا تفاوت های موجود بین نژاد های مختلف نسبت داده شود

Effect of chloroform fraction of Tribulus terrestris (TT) fruit on proliferation, apoptosis and cell cycle arrest of AGS cancer cell line

Background and purpose: Adenocarcinoma gastric cancer is one of the most common cancers of upper gastrointestinal tract. Many natural compounds are known to have anti-tumor activities through induction of tumor cell apoptosis. Tribulus terrestris is a plant with antioxidant and anti-inflammatory effects that has been recommended in the world and Iranian traditional medicine. These effects have been proven in some recent studies. This study was performed to evaluate the anti-tumoral effect of chloroform fraction fruit of Tribulus terrestris (TT) on human adenocarcinoma gastric cancer. Materials and methods: In this experimental study, AGS cells were first cultured in standard conditions in plate and then incubated with different concentrations of chloroform fraction for 24, 48 and 72 hours. Cell viability was determined using MTT assay. Cell death induction and cell cycle arrest were determined using flow cytometry. Results: The results demonstrated that the chloroform fraction decreased AGS cell viability in a concentration and time-dependent manner. The data indicate that this fraction increased apoptosis effectively in AGS cell line and cell cycle was arrested at G0/G1 phase. Conclusion: The effective compounds of the chloroform fraction of the plant Tribulus terrestris (TT) fruit induced apoptotic cell death in human gastric cancer cells. These compounds could be of great benefit in prevention or treatment of human gastric cancer

Gallic Acid Inhibits Proliferation and Induces Apoptosis in Lymphoblastic Leukemia Cell Line (C121)

Leukemia is known as the world's fifth most prevalent cancer. New cytotoxic drugs have created considerable progress in the treatment, but side effects are still the important cause of mortality. Plant derivatives have been recently considered as important sources for the treatment of various diseases, including cancer. Gallic acid (GA) is a polyhydroxyphenolic compound with a wide range of biological functions. The aim of the present study was to evaluate the effect of GA on proliferation inhibition and apoptosis induction of a lymphoblastic leukemia cell line. Jurkat cell (C121) line was cultured in RPMI 1640 supplemented with 10% heat-inactivated fetal bovine serum (FBS) with different concentrations of GA (10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 mu M) for 24, 48 and 72 hours. The effect of GA on cell viability was measured using MTS assay. Induction of apoptosis was evaluated with Annexin V-FITC/PI kit and flow cytometry. Data were analyzed by SPSS version 20 using Kruskal-Wallis and Dunn's multiple comparison tests. Decline of cell viability to less than 50% was observed at 60.3+/-1.6, 50.9+/-1.5, and 30.9+/-2.8 mu M concentration after 24, 48, and 72 hours incubation, respectively. All concentrations of GA (10, 30, 50 and 80 mu M) enhanced apoptosis compared to the control (P<0.05). The results demonstrate that the polyphenolic compound, GA, is effective in inhibition of proliferation and induction of apoptosis in Jurkat cell line. It is recommended to study the mechanism of apoptosis induction in future investigations

The Inhibitory Effect of Epigallocatechin Gallate on the Viability of T Lymphoblastic Leukemia Cells is Associated with Increase of Caspase-3 Level and Fas Expression

Acute lymphoblastic leukemia is the most prevalent cancer in children. Novel components to help struggle aggressive malignancies and overcome some side effects of conventional treatments could be a promising strategy. Epigallocatechingallate (EGCG), have attracted the attention of scientists for prevention or treatment of some cancers. Jurkat cells were incubated with the different concentrations of EGCG (30–100 µm) for 24, 48, and 72 h and cell viability was investigated using MTS test. Apoptosis and the level of caspase 3 alterations were evaluated using flowcytometry and expression of Fas by Real Time PCR. EGCG decreased viability of cells with an inhibition concentration (IC50) of 82.8 ± 3.1, 68.8 ± 4 and 59.7 ± 4.8 μM in 24,48 and 72 h. 50, 70 and 100 µM concentrations of EGCG induced apoptosis in about 31, 40 and 71% of the cells, respectively. The mean value of caspase 3 positive cells in the presence of 50, 70 and 100 µm concentrations of EGCG was 19.3 ± 2.9, 29.5 ± 3.1 and 61.2 ± 3.4 respectively compared to 7.8 ± 1.1 in control with a significant difference at 100 µm concentration. Treatment with EGCG for 48 h enhanced the expression of Fas reaching to a significant level at 100 µM concentration. EGCG is effective in decrease cell viability, apoptosis induction and enhancement of caspase 3 and Fas expression level in jurkat cells. A comprehensive understanding of molecular events and pharmacokinetics of the component and experiments in animal models are required for dose determination and its interaction with other components of combination chemotherapy

Effect of pterostilbene on cellular proliferation inhibition and induction of apoptosis in lymphoblastic leukemia cell line

BACKGROUND AND OBJECTIVE: Acute lymphoblastic leukemia (ALL=Acule Lymphoblastic Leukemia) is the most common type of hematological malignancies in Iranian children. Pterostilbene (PT) is a natural stilbenoid in blueberries. Since the effect of PT on lymphoblastic leukemia cell line has not been investigated, the aim of the present study was to evaluate the effects of PT induction and cellular proliferation inhibition on this cell line. METHODS: In this experimental study, Jurkat cell line was cultured in standard conditions with different concentrations of PT (0, 30, 40, 50, 60, 80 and 100 Dm) for 24, 48 and 72 hours and compared with the cell of control group. Then, the effect of PT on cell viability and induction of apoptosis was measured using MTS assay and Annexin V-FITC kit. FINDINGS: Inhibition of cellular proliferation was 44, 47 and 57 at 60 Dm concentration and 71, 78 and 89 at 100 Dm concentration after 24, 48 and 72 hours of PT incubation, respectively (p<0.05). Cell apoptosis was 60 at 80 Dm, 50 at 60 Dm and 27 at 40 Dm compared to 4.63 in control. There was significant difference at 80 Dm concentration. CONCLUSION: The results demonstrated that the PT was effective on the proliferation inhibition and induction of apoptosis in Jurkat lymphoblastic leukemia cell line. The study of the mechanism of apoptosis induction by using this combination can be a progressive step into target therapy. © 2014 Babol University of Medical Sciences. All rights reserved

Frequency of T lymphocyte subsets in major beta-thalassemia patients and the influencing factors

زمینه و هدف: از راهکارهای رایج درمانی در بیماران تالاسمی تزریق خون های مکرر و درمان دفع آهن است. عوارض عفونی از مشکلات جدی در بیماران تالاسمی به حساب می آید که می تواند ناشی از ناهنجاری های ایمیونولوژیکی باشد. در مطالعه حاضر فراوانی زیر گروه های اصلی لنفوسیت های T و ارتباط آن ها با سن، میزان تزریق خون، فریتین سرم و درمان دفع آهن مورد بررسی قرار گرفته است. روش بررسی: در این مطالعه توصیفی- مقطعی 27 بیمار مبتلا به تالاسمی ماژور مراجعه کننده به بیمارستان هاجر شهرکرد در سال 1390 با محدوده سنی 30-10 سال که بر اساس معیارهای بالینی و آزمایشگاهی تشخیص داده شده بودند، شرکت کردند. گروه شاهد نیز شامل یک گروه 26 نفره از افراد سالم بودند که از لحاظ سن و جنس با بیماران مطابقت داشتند. نمونه خون وریدی در لوله های حاوی سدیم هپارین جمع آوری و پس از لیز گلبول های قرمز با آنتی بادی های منوکلونال نشاندار فلورسنت رنگ آمیزی گردید و مورد آنالیز فلوسایتومتریک قرار گرفت. تعداد سلول ها با توجه به نتایج آنالیز فوق و شمارش خونی محاسبه گردید. نتایج در نرم افزار SPSS و با استفاده از آزمون های M‏ann-Withney و همبستگی اسپیرمن تجزیه و تحلیل شدند. یافته ها: تعداد مطلق لنفوسیت ها در بیماران به صورت معنی داری بیش از گروه شاهد و درصد لنفوسیت های T به صورت معنی داری کمتر از گروه شاهد بود (001/0>P) . تعداد لنفوسیت های T در هر دو گروهCD4 و CD8 بین بیماران و گروه شاهد تفاوت معنی داری نداشت (05/

Effect of Epigallocatechin-3-gallate (EGCG) on cell proliferation inhibition and apoptosis induction in lymphoblastic leukemia cell line

Introduction: Acute lymphoblastic leukemia (ALL) is one of the malignant proliferations of lymphoid cells in the early stages of differentiation and accounts for &frac34; of all cases of childhood leukemia. Available treatment cannot completely treat this disease. Epigallocatechin-3-gallate (EGCG) is a polyphenolic compounds in the green tea that has demonstrated to have anticancer and antimitotic properties. The purpose of the present study was the evaluation of the effect of EGCG on the proliferation inhibition and apoptosis induction in a lymphoblastic leukemia cell line. Methods: Jurkat cell line was cultured in standard condition and in different concentrations of EGCG (0-100 micromolar) for 24, 48 and 72 hours. Cell viability was measured by MTS assay. Apoptosis induction was assessed by annexin V-FITC and flow cytometry analysis. Results: The MTS assay revealed that EGCG has decreased cell viability with a time and dose dependent manner. The level of cell apoptosis in all used concentrations of EGCG (50, 70 and 100 &mu;m) was higher than control group (71, 40 and 31 respectively vs. 8) and reached to significant level at 100 &mu;m concentration. Conclusion: The study indicated that EGCG is effective on proliferation inhibition and apoptotic induction in Jurkat lymphoblastic cell line. Therefore, the study of the mechanism of apoptosis induction could be a step of progress toward target therapy which might be considered in the future studies.</p