کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10819041 | 1060340 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Developmental changes in amniotic and allantoic fluid insulin-like growth factor (IGF)-I and -II concentrations of avian embryos
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the literature, IGFs in the developing embryo are usually determined by blood serum concentrations. For this study, IGF-I/-II was quantified in the amniotic and allantoic fluids of fertile commercial broiler chicken (Gallus domesticus) (n = 222), Pekin duck (Anas platyrhyncha) (n = 250), and turkey (Meleagridis gallopavo) eggs (n = 200) during incubation. Amniotic and allantoic fluids were collected from embryos starting at 6 days of incubation for chickens and 8 days of incubation for ducks and turkeys. IGF concentrations within the fluids were determined by radioimmunoassay. Chicken amniotic IGF-I concentration at stage 29 of development was significantly higher (P â¤Â 0.05) than the duck or turkey. At stage 36 of development the concentration of IGF-II in the amniotic fluid was 2.8 times greater in the chicken versus the duck (P â¤Â 0.05) and 2 times greater than in the turkey (P â¤Â 0.05). Within species, chicken IGF-I concentration in the amniotic fluid had a cubic trend (P â¤Â 0.001), duck IGF-I increased linearly (P â¤Â 0.001), and turkey concentrations declined quadratically (P â¤Â 0.001) throughout development. In all species, the IGF-II concentration was higher than the IGF-I concentration in the amniotic and allantoic fluids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 142, Issue 4, December 2005, Pages 404-409
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 142, Issue 4, December 2005, Pages 404-409
نویسندگان
D.M. Karcher, J.P. McMurtry, T.J. Applegate,