Abstract:
BACKGROUND:Activation of human and non-human colonic beta(beta)3-adrenoceptors causes smooth muscle relaxation. beta3-Adrenoceptor agonists protect against experimental indomethacin-induced jejunal ulceration. The mechanism of protection may involve spasmolytic/vasodilatory agonist activity. The precise localization of beta3-adrenoceptors in the human gut is not known. AIM:To localize the beta3-adrenoceptor within the human gastrointestinal tract using the immunohistochemical technique. METHODS:Human beta3-adrenoceptors were immuno-localized in paraffin sections of human oesophagus (OS), stomach (ST), duodenum (DU), ileum (IL), sigmoid colon (SC), rectum (R) and gall-bladder (GB) using the rabbit polyclonal antibody anti-P12. Staining was graded , ++, + and 0. Immunostaining of SC was also done with pre-incubation of anti-P12 with P12 peptide. Western blotting of anti-P12 on human and murine IL and SC isolated membrane proteins was performed. RESULTS:All epithelia, vascular endothelial cells and ganglia scored 0. Smooth muscle of the vasculature, muscularis propria, muscularis mucosae and mucosa was graded, respectively, as follows; OS ( , , ,-), ST (++, , ++, ++), DU (++, , , +), IL (++, ++, ++, +), SC ( , ++, ++, ++), R (++, ++, +, +), GB ( , , -, 0). Pre-incubation of anti-P12 with P12 peptide almost abolished SC smooth muscle positivity. Western blot analysis using anti-P12 on human, but not murine, IL and SC membrane proteins revealed a single 5 5 kDa band, a size consistent with the predicted size of a partially glycosylated form of the human beta3-adrenoceptor. CONCLUSIONS:This immunohistochemical study has localized the beta3-adrenoceptor to vascular and nonvascular smooth muscle in the human gastrointestinal tract. These findings support a role for the beta3-adrenoceptor in the control of blood flow and motility in the human gastrointestinal tract.
journal_name
Aliment Pharmacol Therjournal_title
Alimentary pharmacology & therapeuticsauthors
Anthony A,Schepelmann S,Guillaume JL,Strosberg AD,Dhillon AP,Pounder RE,Wakefield AJdoi
10.1046/j.1365-2036.1998.00345.xsubject
Has Abstractpub_date
1998-06-01 00:00:00pages
519-25issue
6eissn
0269-2813issn
1365-2036journal_volume
12pub_type
杂志文章abstract:BACKGROUND:In patients with chronic hepatitis C virus infection and persistently normal alanine aminotransferase levels, liver fibrosis has been reported in 0-22% of cases and advanced liver disease in 5-10% of cases. AIM:To determine whether patients with persistently normal alanine aminotransferase levels clear infe...
journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1111/j.1365-2036.2004.01844.x
更新日期:2004-02-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
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abstract:BACKGROUND:The accuracy of symptom-based diagnostic criteria for irritable bowel syndrome (IBS) is modest. AIMS:To derive and validate a new test that utilises latent class analysis. METHODS:Symptom, colonoscopy, and histology data were collected from 1981 patients and 360 patients in two cohorts referred to secondar...
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2009-02-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2003-08-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
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更新日期:1996-04-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1990-08-01 00:00:00
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更新日期:2001-07-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2036.1996.22164019.x
更新日期:1996-01-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2036.1998.00432.x
更新日期:1998-12-01 00:00:00
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更新日期:2021-01-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
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doi:10.1111/j.1365-2036.2005.02580.x
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更新日期:2005-12-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2036.2005.02611.x
更新日期:2005-08-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
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更新日期:2013-07-01 00:00:00
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更新日期:2013-10-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
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更新日期:2011-07-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2003-10-15 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2003-02-15 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1996-12-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,评审
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更新日期:2020-07-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章
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更新日期:2019-03-01 00:00:00
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journal_title:Alimentary pharmacology & therapeutics
pub_type: 杂志文章,随机对照试验
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更新日期:2012-02-01 00:00:00