Antagonistic Effects of Dexamethasone and Retinoic Acid on Rat Lung Morphogenesis
نویسندگان
چکیده
منابع مشابه
Regulation of retinoic acid signaling during lung morphogenesis.
Little is known about how retinoic acid (RA) synthesis, utilization and metabolism are regulated in the embryonic lung and how these activities relate to lung pattern formation. Here we report that early lung bud formation and subsequent branching morphogenesis are characterized by distinct stages of RA signaling. At the onset of lung development RA signaling is ubiquitously activated in primar...
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15 صفحه اولAntagonistic actions of retinoic acid and dexamethasone on anchorage-independent growth and epidermal growth factor binding of normal rat kidney cells.
Type beta transforming growth factor (TGF-beta), in combination with epidermal growth factor (EGF) can induce nonneoplastic normal rat kidney cells to express a transformed phenotype and to form colonies in soft agar. Retinoic acid by itself has no effect on colony formation; but at concentrations of 10(-9) M or greater, it can greatly enhance the response of the cells to EGF and TGF-beta, as m...
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هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1998
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-199803000-00002