Influence of gender and the oestrous cycle on in vitro contractile responses of the rat urinary bladder to cholinergic stimulation

Experiments were done to determine the influence of gender and the oestrous cycle on rat urinary bladder contractility in response to cholinergic stimulation. Bladder strips from female rats responded to high frequency stimulation with smaller contractile responses than did strips from males, and to...

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Veröffentlicht in:British journal of pharmacology 2000-09, Vol.131 (2), p.177-184
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description Experiments were done to determine the influence of gender and the oestrous cycle on rat urinary bladder contractility in response to cholinergic stimulation. Bladder strips from female rats responded to high frequency stimulation with smaller contractile responses than did strips from males, and to low concentrations of carbachol with greater responses. The decreased responsiveness of bladder strips from female rats to electrical field stimulation can be primarily attributed to the rats in the oestrous stage of the oestrous cycle. Bladder strips from female rats in all stages of the oestrous cycle were more sensitive to carbachol than those from males, but there were no differences in sensitivity to electrical field stimulation. The contractile responses of strips from both male and female rats to carbachol were antagonized by muscarinic antagonists with the following rank order of affinity (pA2) estimates: 4‐DAMP>>pirenzepine>methoctramine, suggesting that the receptor mediating contraction was the M3 subtype. There were no differences in pA2 values between bladder strips from male and female rats. The data indicate that responsiveness of bladder strips to electrical field stimulation and carbachol is altered in female rats in the oestrous stage of the oestrous cycle. Furthermore, gender influences the sensitivity of rat bladder to muscarinic stimulation. British Journal of Pharmacology (2000) 131, 177–184; doi:10.1038/sj.bjp.0703551
doi_str_mv 10.1038/sj.bjp.0703551
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Bladder strips from female rats responded to high frequency stimulation with smaller contractile responses than did strips from males, and to low concentrations of carbachol with greater responses. The decreased responsiveness of bladder strips from female rats to electrical field stimulation can be primarily attributed to the rats in the oestrous stage of the oestrous cycle. Bladder strips from female rats in all stages of the oestrous cycle were more sensitive to carbachol than those from males, but there were no differences in sensitivity to electrical field stimulation. The contractile responses of strips from both male and female rats to carbachol were antagonized by muscarinic antagonists with the following rank order of affinity (pA2) estimates: 4‐DAMP&gt;&gt;pirenzepine&gt;methoctramine, suggesting that the receptor mediating contraction was the M3 subtype. There were no differences in pA2 values between bladder strips from male and female rats. The data indicate that responsiveness of bladder strips to electrical field stimulation and carbachol is altered in female rats in the oestrous stage of the oestrous cycle. Furthermore, gender influences the sensitivity of rat bladder to muscarinic stimulation. British Journal of Pharmacology (2000) 131, 177–184; doi:10.1038/sj.bjp.0703551</description><identifier>ISSN: 0007-1188</identifier><identifier>EISSN: 1476-5381</identifier><identifier>DOI: 10.1038/sj.bjp.0703551</identifier><identifier>PMID: 10991909</identifier><identifier>CODEN: BJPCBM</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Animals ; Biological and medical sciences ; Carbachol - pharmacology ; Cholinergic Agonists - pharmacology ; Cholinergic system ; Diamines - pharmacology ; Electric Stimulation ; electrical field stimulation ; Estrus - drug effects ; Estrus - physiology ; Female ; Gender ; Male ; Medical sciences ; Muscarinic Antagonists - pharmacology ; muscarinic receptors ; Nephrology. Urinary tract diseases ; Neuropharmacology ; Neurotransmitters. Neurotransmission. Receptors ; oestrous cycle ; Parasympatholytics - pharmacology ; Pharmacology. Drug treatments ; Piperidines - pharmacology ; Pirenzepine - pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Cholinergic - metabolism ; Sex Characteristics ; smooth muscle contraction ; Time Factors ; urinary bladder ; Urinary Bladder - drug effects ; Urinary Bladder - physiology ; Urinary system involvement in other diseases. Miscellaneous ; Urinary tract. 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Bladder strips from female rats responded to high frequency stimulation with smaller contractile responses than did strips from males, and to low concentrations of carbachol with greater responses. The decreased responsiveness of bladder strips from female rats to electrical field stimulation can be primarily attributed to the rats in the oestrous stage of the oestrous cycle. Bladder strips from female rats in all stages of the oestrous cycle were more sensitive to carbachol than those from males, but there were no differences in sensitivity to electrical field stimulation. The contractile responses of strips from both male and female rats to carbachol were antagonized by muscarinic antagonists with the following rank order of affinity (pA2) estimates: 4‐DAMP&gt;&gt;pirenzepine&gt;methoctramine, suggesting that the receptor mediating contraction was the M3 subtype. There were no differences in pA2 values between bladder strips from male and female rats. The data indicate that responsiveness of bladder strips to electrical field stimulation and carbachol is altered in female rats in the oestrous stage of the oestrous cycle. Furthermore, gender influences the sensitivity of rat bladder to muscarinic stimulation. British Journal of Pharmacology (2000) 131, 177–184; doi:10.1038/sj.bjp.0703551</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Carbachol - pharmacology</subject><subject>Cholinergic Agonists - pharmacology</subject><subject>Cholinergic system</subject><subject>Diamines - pharmacology</subject><subject>Electric Stimulation</subject><subject>electrical field stimulation</subject><subject>Estrus - drug effects</subject><subject>Estrus - physiology</subject><subject>Female</subject><subject>Gender</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Muscarinic Antagonists - pharmacology</subject><subject>muscarinic receptors</subject><subject>Nephrology. Urinary tract diseases</subject><subject>Neuropharmacology</subject><subject>Neurotransmitters. Neurotransmission. Receptors</subject><subject>oestrous cycle</subject><subject>Parasympatholytics - pharmacology</subject><subject>Pharmacology. Drug treatments</subject><subject>Piperidines - pharmacology</subject><subject>Pirenzepine - pharmacology</subject><subject>Rats</subject><subject>Rats, Sprague-Dawley</subject><subject>Receptors, Cholinergic - metabolism</subject><subject>Sex Characteristics</subject><subject>smooth muscle contraction</subject><subject>Time Factors</subject><subject>urinary bladder</subject><subject>Urinary Bladder - drug effects</subject><subject>Urinary Bladder - physiology</subject><subject>Urinary system involvement in other diseases. Miscellaneous</subject><subject>Urinary tract. 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Urinary tract diseases</topic><topic>Neuropharmacology</topic><topic>Neurotransmitters. Neurotransmission. Receptors</topic><topic>oestrous cycle</topic><topic>Parasympatholytics - pharmacology</topic><topic>Pharmacology. Drug treatments</topic><topic>Piperidines - pharmacology</topic><topic>Pirenzepine - pharmacology</topic><topic>Rats</topic><topic>Rats, Sprague-Dawley</topic><topic>Receptors, Cholinergic - metabolism</topic><topic>Sex Characteristics</topic><topic>smooth muscle contraction</topic><topic>Time Factors</topic><topic>urinary bladder</topic><topic>Urinary Bladder - drug effects</topic><topic>Urinary Bladder - physiology</topic><topic>Urinary system involvement in other diseases. Miscellaneous</topic><topic>Urinary tract. Prostate gland</topic><topic>Uterine Contraction - drug effects</topic><topic>Uterine Contraction - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Longhurst, Penelope A</creatorcontrib><creatorcontrib>Levendusky, Mark</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium &amp; Calcified Tissue Abstracts</collection><collection>Nursing &amp; Allied Health Database</collection><collection>Neurosciences Abstracts</collection><collection>Health &amp; Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>British journal of pharmacology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Longhurst, Penelope A</au><au>Levendusky, Mark</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of gender and the oestrous cycle on in vitro contractile responses of the rat urinary bladder to cholinergic stimulation</atitle><jtitle>British journal of pharmacology</jtitle><addtitle>Br J Pharmacol</addtitle><date>2000-09</date><risdate>2000</risdate><volume>131</volume><issue>2</issue><spage>177</spage><epage>184</epage><pages>177-184</pages><issn>0007-1188</issn><eissn>1476-5381</eissn><coden>BJPCBM</coden><abstract>Experiments were done to determine the influence of gender and the oestrous cycle on rat urinary bladder contractility in response to cholinergic stimulation. Bladder strips from female rats responded to high frequency stimulation with smaller contractile responses than did strips from males, and to low concentrations of carbachol with greater responses. The decreased responsiveness of bladder strips from female rats to electrical field stimulation can be primarily attributed to the rats in the oestrous stage of the oestrous cycle. Bladder strips from female rats in all stages of the oestrous cycle were more sensitive to carbachol than those from males, but there were no differences in sensitivity to electrical field stimulation. The contractile responses of strips from both male and female rats to carbachol were antagonized by muscarinic antagonists with the following rank order of affinity (pA2) estimates: 4‐DAMP&gt;&gt;pirenzepine&gt;methoctramine, suggesting that the receptor mediating contraction was the M3 subtype. There were no differences in pA2 values between bladder strips from male and female rats. The data indicate that responsiveness of bladder strips to electrical field stimulation and carbachol is altered in female rats in the oestrous stage of the oestrous cycle. Furthermore, gender influences the sensitivity of rat bladder to muscarinic stimulation. British Journal of Pharmacology (2000) 131, 177–184; doi:10.1038/sj.bjp.0703551</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>10991909</pmid><doi>10.1038/sj.bjp.0703551</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Biological and medical sciences
Carbachol - pharmacology
Cholinergic Agonists - pharmacology
Cholinergic system
Diamines - pharmacology
Electric Stimulation
electrical field stimulation
Estrus - drug effects
Estrus - physiology
Female
Gender
Male
Medical sciences
Muscarinic Antagonists - pharmacology
muscarinic receptors
Nephrology. Urinary tract diseases
Neuropharmacology
Neurotransmitters. Neurotransmission. Receptors
oestrous cycle
Parasympatholytics - pharmacology
Pharmacology. Drug treatments
Piperidines - pharmacology
Pirenzepine - pharmacology
Rats
Rats, Sprague-Dawley
Receptors, Cholinergic - metabolism
Sex Characteristics
smooth muscle contraction
Time Factors
urinary bladder
Urinary Bladder - drug effects
Urinary Bladder - physiology
Urinary system involvement in other diseases. Miscellaneous
Urinary tract. Prostate gland
Uterine Contraction - drug effects
Uterine Contraction - physiology
title Influence of gender and the oestrous cycle on in vitro contractile responses of the rat urinary bladder to cholinergic stimulation
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