home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
HEALTH
/
MED9601.ZIP
/
M9610500.TXT
< prev
next >
Wrap
Text File
|
1996-01-30
|
2KB
|
29 lines
Document 0500
DOCN M9610500
TI High-affinity binding of melatonin by human circulating T lymphocytes
(CD4+).
DT 9601
AU Gonzalez-Haba MG; Garcia-Maurino S; Calvo JR; Goberna R; Guerrero JM;
Department of Medical Biochemistry and Molecular Biology,; University of
Seville School of Medicine, Spain.
SO FASEB J. 1995 Oct;9(13):1331-5. Unique Identifier : AIDSLINE
MED/96026200
AB This paper shows the presence of high-affinity binding sites for
melatonin in human circulating T lymphocytes, but not in B lymphocytes.
The binding of melatonin to T cells was dependent on time, stable,
reversible, saturable, specific, and inversely correlated to the
production of melatonin, expressed as the nocturnal 12 h production of
its urinary metabolite 6-sulfatoxymelatonin. The affinity of these
binding sites (Kd = 0.27 nM) suggests that they may recognize the
physiological concentrations of melatonin in serum. Moreover, among the
lymphocyte subpopulations studied, binding of melatonin was mostly found
in CD4+ cells rather than in CD8+ cells. Results suggest that CD4+ cells
may be the target of melatonin among the human circulating lymphocytes.
DE Adult B-Lymphocytes/METABOLISM CD4-Positive T-Lymphocytes/*METABOLISM
CD8-Positive T-Lymphocytes/METABOLISM Human Melatonin/ANALOGS &
DERIVATIVES/*METABOLISM/URINE Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).