Neurotensin stimulates Cl(-) secretion in human colonic mucosa In vitro: role of adenosine.
Neurotensin stimulates Cl(-) secretion in human colonic mucosa In vitro: role of adenosine.
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神经降压素刺激人结肠粘膜 Cl(-) 分泌体外:腺苷的作用。
DOI:
10.1053/gast.2000.9310
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发表时间:
2000
期刊:
影响因子:
29.4
通讯作者:
Pothoulakis,C
中科院分区:
文献类型:
--
作者:
Riegler,M;Castagliuolo,I;Wang,C;Wlk,M;Sogukoglu,T;Wenzl,E;Matthews,JB;Pothoulakis,C
Background & AimsPrevious studies indicated that the peptide neurotensin (NT) stimulates Cl−secretion in animal small intestinal mucosa in vitro. In this study, we investigated whether NT causes Cl−secretion in human colonic mucosa and examined the mechanism of this response.MethodsHuman mucosal preparations mounted in Ussing chambers were exposed to NT. Drugs for pharmacologic characterization of NT-induced responses were applied 30 minutes before NT.ResultsSerosal, but not luminal, administration of NT (10−8to 10−6mol/L) induced a rapid, monophasic, concentration- and chloride-dependent, bumetanide-sensitive short-circuit current (Isc) increase that was inhibited by the specific nonpeptide NT receptor antagonists SR 48692 and SR 142948A, the neuronal blocker tetrodotoxin, and the prostaglandin synthesis inhibitor indomethacin. The mast cell stabilizer lodoxamide and the histamine 1 and 2 receptor antagonists pyrilamine and ranitidine, respectively, did not significantly alter NT-induced Isc increase. In contrast, the adenosine receptor 1 and 2 antagonists inhibited this secretory response, whereas the adenosine uptake inhibitorsS -(4-nitrobenzyl)-6-thioguanosine andS -(4-nitrobenzyl)-6-thioinosine and the adenosine deaminase inhibitor deoxycoformycin potentiated NT-induced Isc increase. Serosal adenosine induced a rapid, monophasic, concentration- and chloride-dependent, bumetanide-sensitive Isc increase.ConclusionsNT stimulates chloride secretion in human colon by a pathway(s) involving mucosal nerves, adenosine, and prostaglandins.
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DOI:
10.1523/jneurosci.16-18-05613.1996
发表时间:
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期刊:
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1989
期刊:
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--
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