Document Detail


Impaired nocturnal synthesis of melatonin in patients with cardiac syndrome X.
MedLine Citation:
PMID:  12098655     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated nocturnal secretion pattern of melatonin in patients with cardiac syndrome X and healthy subjects. The present study performed in five patients with cardiac syndrome X and in nine healthy controls. Blood samples from all subjects were collected every 2 h intervals between 22:00 and 08:00 h. Melatonin levels were measured with a radioimmunoassay kit. Patients with cardiac syndrome X secreted less nocturnal melatonin at 02:00 h than control subjects (P=0.04). Peak and Delta melatonin (peak-lowest melatonin) were found lower in patients with cardiac syndrome X (P=0.039 and P=0.028, respectively). In conclusion patients with cardiac syndrome X show a markedly decreased nocturnal melatonin synthesis. Our study provides useful information about melatonin synthesis and release in patients with cardiac syndrome X might help physicians in managing these patients.
Authors:
Armagan Altun; Mevlut Yaprak; Meryem Aktoz; Arzu Vardar; Ugur Altun Betul; Gultac Ozbay
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neuroscience letters     Volume:  327     ISSN:  0304-3940     ISO Abbreviation:  Neurosci. Lett.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-07-05     Completed Date:  2002-09-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7600130     Medline TA:  Neurosci Lett     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  143-5     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Medical School, Trakya University, Edirne, Turkey. altun@medscape.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Circadian Rhythm
Female
Humans
Male
Melatonin / biosynthesis*,  blood
Microvascular Angina / metabolism*
Middle Aged
Pineal Gland / metabolism
Sympathetic Nervous System / physiology
Vagus Nerve / physiology
Chemical
Reg. No./Substance:
73-31-4/Melatonin

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


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