کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5585488 1568206 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Alterations in brain morphology and HSP70 expression in lizard embryos exposed to thermal stress
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Alterations in brain morphology and HSP70 expression in lizard embryos exposed to thermal stress
چکیده انگلیسی
The teratogenic effects of thermal stress were studied in the oviparous Italian wall lizard Podarcis sicula. To this purpose, the eggs were exposed to continuous or temporary cold (15 °C) or warm (30 °C) stresses and the effects were analysed at the cytological and molecular levels. The results demonstrated the lethality of the continuous regimes and of the warm temporary regime, no matter if given at early (5 days) or late (15 days) stages of development. Temporary cold stress also resulted in lethality, but only if given in the early stage; later, in fact, it resulted in an abnormal development, with marked alterations in the encephalic vesicles, in the eyes and the trunk organs. By in situ hybridization, it was demonstrated that these alterations were often correlated with changes in HSP70 expression. In conclusion, our data indicate that Podarcis embryos have a limited potential to tolerate thermal changes, especially warm ones. The average predicted temperature increase of 2-4 °C in the next few decades could therefore represent a real threat for lizard populations living in temperate areas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comptes Rendus Biologies - Volume 339, Issues 9–10, September–October 2016, Pages 380-390
نویسندگان
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