Document Detail

Captopril and lisinopril decrease acetaldehyde effects upon the prothrombin time.
MedLine Citation:
PMID:  17932766     Owner:  NLM     Status:  MEDLINE    
Captopril, a thiol-containing antihypertensive drug, and lisinopril, an amino-containing antihypertensive drug, will both prolong the prothrombin time (PT) of Level I plasma. Acetaldehyde, a product of ethanol metabolism, also prolongs PT. In a study to examine the interrelationship between hypertension, hemostasis, and alcoholism, an examination of the impact of acetaldehyde on the effects of captopril and lisinopril upon PT was undertaken. It was observed that the pre-mixing of 7.7 x 10(-3) M captopril with 40.6 mM acetaldehyde for 30 min at R.T. prior to the addition to plasma results in a prolongation of PT which is less than that caused by acetaldehyde alone. Successive additions of captopril and acetaldehyde to plasma also yield a PT which is less than that of acetaldehyde alone. These data suggest that captopril may partially inactivate and detoxify the acetaldehyde effect on hemostasis upon interaction to form a thiohemiacetal. Captopril may prolong PT by the reduction of the S-S bridges in the coagulation factors. Lisinopril behaves similarly to captopril, prolonging PT. Successive additions of lisinopril and acetaldehyde, or pre-mixtures thereof, to plasma result in a lesser prolongation of clotting time relative to acetaldehyde alone. Since primary amines similar to that of lisinopril readily form Schiff bases with acetaldehyde, these data suggest that both captopril and lisinopril may act to detoxify the acetaldehyde effect upon plasma, albeit by different mechanisms.
Arthur S Brecher; Rachel Dubord
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-10-12
Journal Detail:
Title:  Digestive diseases and sciences     Volume:  53     ISSN:  0163-2116     ISO Abbreviation:  Dig. Dis. Sci.     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-04-10     Completed Date:  2008-06-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7902782     Medline TA:  Dig Dis Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1334-8     Citation Subset:  AIM; IM    
Department of Chemistry, Bowling Green State University, Bowling Green, OH 43403, USA.
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MeSH Terms
Acetaldehyde / pharmacology*
Antihypertensive Agents / pharmacology*
Captopril / pharmacology*
Lisinopril / pharmacology*
Prothrombin Time*
Reg. No./Substance:
0/Antihypertensive Agents; 62571-86-2/Captopril; 75-07-0/Acetaldehyde; 83915-83-7/Lisinopril

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

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