Animal model for angiotensin II effects in the internal anal sphincter smooth muscle: mechanism of action

YP Fan, RN Puri, S Rattan - American Journal of …, 2002 - journals.physiology.org
Effect of ANG II was investigated in in vitro smooth muscle strips and in isolated smooth
muscle cells (SMC). Among different species, rat internal and sphincter (IAS) smooth muscle …

Comparison of angiotensin II (Ang II) effects in the internal anal sphincter (IAS) and lower esophageal sphincter smooth muscles

S Rattan, YP Fan, RN Puri - Life sciences, 2002 - Elsevier
Studies were performed to compare the actions of Ang II in the internal anal sphincter (IAS)
vs. lower esophageal sphincter (LES) smooth muscles in vitro, in opossum and rabbit …

Translocation of AT1-and AT2-receptors by higher concentrations of angiotensin II in the smooth muscle cells of rat internal anal sphincter

MAF De Godoy, S Rattan - Journal of Pharmacology and Experimental …, 2006 - ASPET
Previous studies have reported bimodal effects by angiotensin II (Ang II) in the rat internal
anal sphincter (IAS), a concentration-dependent contraction (at lower concentrations) and …

Evidence for the role of angiotensin II biosynthesis in the rat internal anal sphincter tone

MAF De Godoy, S Dunn, S Rattan - Gastroenterology, 2004 - Elsevier
Background & Aims: The internal anal sphincter tone is important for anorectal continence.
This study examined the role of angiotensin II as a neurohumoral signal for the myogenic …

Autocrine regulation of internal anal sphincter tone by renin-angiotensin system: comparison with phasic smooth muscle

MAF De Godoy, S Rattan - American Journal of Physiology …, 2005 - journals.physiology.org
The myogenic control mechanisms that govern the basal tone in the internal anal sphincter
(IAS) are not known. The present studies determined the autocrine regulation of ANG II in …

Angiotensin II induced contraction of rat and human small intestinal wall musculature in vitro

S Ewert, E Spak, T Olbers, E Johnsson… - Acta …, 2006 - Wiley Online Library
Abstract Background: Angiotensin II (Ang II) is a well‐known activator of smooth muscle in
the vasculature but has been little explored with regard to intestinal wall muscular activity …

Role of pp60c-src andp44/42 MAPK in ANG II-induced contraction of rat tonic gastrointestinal smooth muscles

RN Puri, YP Fan, S Rattan - American Journal of …, 2002 - journals.physiology.org
We examined the role of mitogen-activated protein kinase (p44/42 MAPK) in ANG II-induced
contraction of lower esophageal sphincter (LES) and internal anal sphincter (IAS) smooth …

Activation of angiotensin II type 1 receptors and contractile activity in human sigmoid colon in vitro

M Mastropaolo, MG Zizzo, M Auteri… - Acta …, 2015 - Wiley Online Library
Aim To analyse the effects of angiotensin II (Ang II) on the contractility of human sigmoid
colon, and to characterize the subtype (s) of receptor (s) involved and the related action …

Involvement of rho and rho-associated kinase in sphincteric smooth muscle contraction by angiotensin II

S Rattan, RN Puri, YP Fan - Experimental biology and …, 2003 - journals.sagepub.com
The tonic smooth muscles of lower esophageal sphincter (LES) and internal anal sphincter
(IAS) are subject to modulation by the neurohumoral agents. We report that angiotensin …

Angiotensin-converting enzyme and angiotensin II receptor subtype 1 inhibitors restitute hypertensive internal anal sphincter in the spontaneously hypertensive rats

MAF De Godoy, S Rattan - Journal of Pharmacology and Experimental …, 2006 - ASPET
The present study determined the effects of the angiotensin-converting enzyme (ACE)
inhibitor captopril and angiotensin II receptor subtype 1 (AT1-R) antagonist losartan on the …