کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2052390 1074229 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differential regulation of the intrinsic pathway of apoptosis in brain and liver during ageing
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Differential regulation of the intrinsic pathway of apoptosis in brain and liver during ageing
چکیده انگلیسی

The intrinsic (mitochondria-dependent) pathway of apoptosis is one of the major pathways leading to cell death. We evaluated cytochrome c/apoptotic protease activation factor-1 (Apaf-1)-dependent activation of caspase-3 in brain and liver of different strains of rodents at different stages of development. In cell-free extracts from brain and liver of Sprague-Dawley rats, caspase was activated by cytochrome c/2′-deoxyadenosine 5′-triphosphate at both neonatal and adult stages. In adult brain extracts from Wistar rats, no activation of caspase was observed while extracts from neonatal brain and liver and from adult liver were activated. In CD-1 mouse, only neonatal extracts were activated. Alteration in levels of endogenous inhibitors of apoptosis were not responsible for the lack of activation observed. Instead, decrease in the content of Apaf-1 and caspase-3 and some degradation of caspase-9 during brain ageing were observed. These results suggest that a decrease in apoptosis activation during ageing is not tissue-specific, but rather displays a complex dependence on species and strains of animals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 580, Issue 15, 26 June 2006, Pages 3739–3745
نویسندگان
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