Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/133709
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dc.titleSelective inhibition of multimolecular forms of human serum and placental oxytocinase activity by prostaglandins and cyclic GMP
dc.contributor.authorRoy, A.C.C.
dc.contributor.authorYeang, M.
dc.contributor.authorKottegoda, S.R.
dc.contributor.authorRatnam, S.S.
dc.date.accessioned2016-12-20T08:39:10Z
dc.date.available2016-12-20T08:39:10Z
dc.date.issued1984
dc.identifier.citationRoy, A.C.C., Yeang, M., Kottegoda, S.R., Ratnam, S.S. (1984). Selective inhibition of multimolecular forms of human serum and placental oxytocinase activity by prostaglandins and cyclic GMP. Prostaglandins Leukotrienes and Medicine 14 (1) : 105-111. ScholarBank@NUS Repository.
dc.identifier.issn02621746
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/133709
dc.description.abstractUltrogel acrylamide-agarose chromatography was employed for fractionation of oxytocinase isoenzymes from serum of pregnant women and from human placenta. Using S-benzyl-L-cysteine-p-nitroanilide (BCN) and L-leucine-p-nitroanilide (LN) as substrates, three activity peaks (PI, PII, PIII) from placenta, and one peak (SI) from serum were identified. SI coincided with PII, and with all isoenzymes the hydrolysis of LN was greater than that of BCN. Prostaglandins E1, E2 and F(2α) inhibited all oxytocinases, more potently the hydrolysis of LN than BCN and at pH 6.2 than at pH 6.8. Although cyclic GMP and its 8-bromo derivative similarly inhibited these isoenzymes except PIII, they were considerably more effective against the hydrolysis of BCN than LN.
dc.typeArticle
dc.contributor.departmentOBSTETRICS & GYNAECOLOGY
dc.description.sourcetitleProstaglandins Leukotrienes and Medicine
dc.description.volume14
dc.description.issue1
dc.description.page105-111
dc.description.codenPLMED
dc.identifier.isiutNOT_IN_WOS
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