کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10928056 | 1092891 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seasonal variations of anti-/apoptotic and antioxidant proteins in the heart and gastrocnemius muscle of the water frog Pelophylax ridibundus
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present work we investigated the seasonal variations of apoptotic and antioxidant proteins in the heart and gastrocnemius muscle of the amphibian Pelophylax ridibundus. Particularly processes studied included the evaluation of hypoxia through the levels of transcriptional factor Hif-1α, of apoptosis through the determination of Bcl-2 and Bax, ubiquitin conjugates levels and the antioxidant defense through the determination of the activity of enzymes such as superoxide dismutase, catalase and glutathione peroxidase. Due to a general metabolic depression during overwintering, levels of the above mentioned proteins and enzymes are generally retained at low levels of expression and activity in the examined tissues of P. ridibundus. On the other hand recovery from overwintering induces oxidative stress, followed by increased levels of the specific proteins and enzymes. A milder up-regulation of antioxidant enzymes during overwintering probably prepares P. ridibundus for oxidative stress during arousal. The seasonal activation of these mechanisms seems to protect this species from these unfavourable conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryobiology - Volume 67, Issue 2, October 2013, Pages 175-183
Journal: Cryobiology - Volume 67, Issue 2, October 2013, Pages 175-183
نویسندگان
Konstantinos Feidantsis, Andreas Anestis, Basile Michaelidis,