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분리된 백서 췌도의 인슐린 분비에 미치는 Atrial Natriuretic Factor 의 영향
전기엽(Ki Youp Jeon),최영숙(Young Suck Choi),박명철(Myung Chul Park),정숙현(Suck Hyun Jeong),정준용(Jun Yong Jeong),송미숙(Mi Suck Song),김은영(Eun Young Kim),이영화(Young Wha Lee) 대한내과학회 1991 대한내과학회지 Vol.41 No.2
The atrial natriuretic factors have their main function in the regulation of water and elecrolyte balance and blood pressure1-5). Recently ANF-like immunoreactivty has been shown to also occur in pancreatic islet cells10), and because several intrapancreatic peptides are known to have the capacity to regulate islet function', we therefore investigated the influences of synthetic rat ANF (3-28) on glucose-stimulated insulin secretion. After pancreatic islets isolation, they were perifused with solutions which contained 10 mmol glucose, ANF, carbachol and adrenoceptor blockades. Their secreted insulin values are shown in Tables 1 and 2, and their results are summarized as follows: 1) ANF significantly suppressed the glucose-induced increment of the first-and second-phase insulin secretion.(*p<0.05 ***p<0.0025) 2) ANF did not significantly suppress the chlinergic carbachol-induced increment of the first-phase insulin secretion. (p>0.05) 3) There was no demonstrable inhibitory effect of the ANF in the solution which contained combined a-and β-adrenoceptor blockade. In conclusion, we suggest that rat ANF inhibits glucose-stimulated insulin secretion in the rat by direct peculiar interferences and partial mediation of the adrenoceptors.