<原著>ラット耳下腺細胞のアミラーゼ分泌反応とサイクリックAMP生成に対するCa^<2+>およびEGTAの効果

概要

論文の詳細を見る
The effects of Ca^<2+> and EGTA on rat parotid amylase secretion and cyclic AMP accumulation were investigated in vitro using a dispersed acinar cell preparation. Amylase secretion induced by isoproterenol and dibutyryl cyclic AMP was significantly enhanced by pre-treatment (30min) with more than 50μM Ca^<2+>. Depletion of intracellular Ca^<2+> by pre-treatment with 2mM EGTA reduced the amylase secretion, although the pre-treatment was unable to completely block the secretion. The pre-treatment with Ca^<2+> and EGTA did not alter the rise in cellular cyclic AMP induced by isoproterenol. These results suggest that intracellular Ca^<2+> is necessary to elicit the maximum amylase secretion and that Ca^<2+> may be involved in the exocytosis of parotid amylase at steps distal from the cyclic AMP metabolism.
北海道医療大学の論文
1988-12-31