Document Detail


Copper and contractility of the human fallopian tube.
MedLine Citation:
PMID:  6945047     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Muscle specimens were obtained from human oviducts during legal surgical sterilizations. Muscle strips (1 mm wide) were dissected from the circular and longitudinal muscle layers at the ampullary-isthmic junction, and contractile activity was recorded during short-term experiments in an organ bath. Administration of copper chloride induced a clear-cut excitatory response in both muscle layers. The response was, in many respects, similar to that evoked by low concentrations of prostaglandin F2 alpha (PGF2 alpha) but differed from the response induced by PGE2. Pretreatment of the tissue with indomethacin blocked the excitatory action of copper and frequently reversed the response into an inhibition of the contractile activity. After maximal stimulation of contractility by exogenous PGF2 alpha, copper was ineffective as a stimulant, whereas a maximal response elicited by copper could be further augmented by the addition of PGF2 alpha. The conclusion is that copper ions released from a copper intrauterine contraceptive device may increase contractility of the oviducts by an action on endogeneous synthesis of prostaglandins, predominantly of the F series. In addition, copper also seems to possess an inhibitory influence on motility of the oviducts, which becomes apparent only when the excitatory effect is blocked pharmacologically.
Authors:
B Lindblom; L Hamberger
Related Documents :
2810437 - Blocking action of berberine on various receptors in rat anococcygeus muscle.
1667797 - Comparison of neurotransmission with nerve trunk and transmural field stimulation in gu...
519107 - Effects of uptake inhibitors on responses of sheep coronary arteries to catecholamines ...
22006837 - Proteomic changes induced by anaesthesia and muscle relaxant treatment prior to electro...
21439027 - Lipogenic regulators are elevated with age and chronic overload in rat skeletal muscle.
160197 - A new grouping of intrafusal muscle fibers based on developmental studies of muscle spi...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  141     ISSN:  0002-9378     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  1981 Oct 
Date Detail:
Created Date:  1981-11-22     Completed Date:  1981-11-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  398-402     Citation Subset:  AIM; IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Copper / pharmacology*
Dinoprost
Dose-Response Relationship, Drug
Fallopian Tubes / drug effects*
Female
Humans
Indomethacin / pharmacology
Muscle Contraction / drug effects*
Muscle, Smooth / drug effects
Prostaglandins F / pharmacology
Chemical
Reg. No./Substance:
0/Prostaglandins F; 53-86-1/Indomethacin; 551-11-1/Dinoprost; 7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  A simpler approach to labor induction using lipid-based prostaglandin E2 vaginal suppository.
Next Document:  The effect of altered bone metabolism on orthodontic tooth movement.