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MedLine Citation:
PMID:  22497630     Owner:  NLM     Status:  In-Data-Review    
S-carboxymethyl-L-cysteine, the side-chain carboxymethyl derivative of the sulfur-containing amino acid, cysteine, has been known and available for almost 80 years. During this time, it has been put to a variety of uses, but it is within the field of respiratory medicine that, presently, it has found a clinical niche. Early studies indicated that this compound underwent a rather simplistic, predictable pattern of metabolism, whereas later investigations alluded to more subtle interactions with the pathways of intermediary metabolism, as may be expected for an amino acid derivative. In addition, suggestions of polymorphic influences and circadian rhythms within metabolic profiles have emerged. These latter factors may underlie the conflicting reports regarding the therapeutic efficacy of this compound: that it appears to work well in some patients, but has no measurable effects in others. The relevant literature pertaining to the fate of this compound within living systems has been reviewed and a comprehensive précis advanced. Hopefully, this article will serve as a vade mecum for those interested in S-carboxymethyl-L-cysteine and as a catalyst for future research.
Steve C Mitchell; Glyn B Steventon
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Drug metabolism reviews     Volume:  44     ISSN:  1097-9883     ISO Abbreviation:  Drug Metab. Rev.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-04-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0322067     Medline TA:  Drug Metab Rev     Country:  England    
Other Details:
Languages:  eng     Pagination:  129-47     Citation Subset:  IM    
Biomolecular Medicine, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London , London , United Kingdom.
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