کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2602112 1133360 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanism of cadmium induced apoptosis in the immunocyte
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
Mechanism of cadmium induced apoptosis in the immunocyte
چکیده انگلیسی

Cadmium is the major component of polluted environment which can be fatal by mechanisms that are not fully clear. Our study indicates immunosupression may be one of the reason for that. It is well known that cadmium (Cd) has toxic and carcinogenic effects in rhondents and humans, but the effects of cadmium on apoptosis are still not clear. Although some studies have shown that cadmium has apoptotic potential, other studies have shown that cadmium can be anti-apoptotic. In the present study, we aimed to determine the mode of cell death and its mechanism in Swiss albino mice splenocyte by cadmium for its toxic effects. To identify the nature of cell death, our result signifies apoptotic mode of killing. In search of the mechanism behind it we found that cadmium increased cell death and lowered the survival of the host in a dose dependent manner. In search of the reason we found increased expression of the pro-apoptotic proteins p53 in splenic lymphocytes. Here we showed that cadmium induced p53-dependent apoptosis through cooperation between Bcl-xl down regulation without changing the Bcl-2 and Bax expression, the common target of p53. The down regulation of Bcl-xl strongly indicating mitochondrial involvement in apoptosis. It is confirmed by the release of cytochrome c and activation of caspase-3. All of these findings establish an important role of p53 and mitochondrial function in cadmium induced toxic environment in the host.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Toxicology Letters - Volume 177, Issue 2, 15 March 2008, Pages 83–89
نویسندگان
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