Document Detail

Comparison of antispasmodic effect of synthetic lysolecithins with various fatty acid moieties on guinea pig ileum.
MedLine Citation:
PMID:  6481614     Owner:  NLM     Status:  MEDLINE    
Non-competitive antispasmodic effects of 8 kinds of synthetic L-alpha-lysolecithins (1-O-acyl-2-lyso-sn-glycero-3-phosphocholine, LPC) with various fatty acid moieties were examined upon the spasmodic actions of histamine and acetylcholine on guinea pig ileum. Five-min pretreatment of the gut with the synthetic LPC was required to be effective. With increase of the concentration of a synthetic LPC for pretreatment of the ileum, the slope of the dose-response curve of histamine or acetylcholine added cumulatively became more gentle, the maximal contraction was suppressed apparently, and which were associated with the shift of the curve to the higher concentration of the stimulants. Of LPCs with saturated fatty acid palmitoyl-LPC showed the strongest effect, followed by myristoyl-, stearoyl-, lauroyl- and decanoyl-LPCs in order. Incorporation of cis-double bond into the C18 fatty acid chain of LPC resulted in slight decrease of the antispasmodic effect. The relaxating effect of LPCs on perfused rabbit ear vessel preparations was similar in order.
H Tsukatani; J Yoshida; K Takauchi; S Yamada; A Tokumura; K Nakanishi; T Hayakawa
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Publication Detail:
Type:  Comparative Study; In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of pharmacobio-dynamics     Volume:  7     ISSN:  0386-846X     ISO Abbreviation:  J. Pharmacobio-dyn.     Publication Date:  1984 Jun 
Date Detail:
Created Date:  1984-11-16     Completed Date:  1984-11-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7901854     Medline TA:  J Pharmacobiodyn     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  400-6     Citation Subset:  IM    
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MeSH Terms
Acetylcholine / pharmacology
Ear / blood supply
Fatty Acids / pharmacology*
Guinea Pigs
Histamine / pharmacology
Ileum / drug effects
Lysophosphatidylcholines / pharmacology*
Muscle Contraction / drug effects
Muscle, Smooth / drug effects*
Muscle, Smooth, Vascular / drug effects
Structure-Activity Relationship
Reg. No./Substance:
0/Fatty Acids; 0/Lysophosphatidylcholines; 0/Parasympatholytics; 51-45-6/Histamine; 51-84-3/Acetylcholine

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

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