Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
|
pubmed:dateCreated |
1995-6-15
|
pubmed:abstractText |
Putative melatonin receptors in normal kidney cortical tissues of patients with transitional cell carcinoma or renal cell carcinoma were characterized using a melatonin agonist, 2-[125I]iodomelatonin, as the radioligand. 2-[125I]Iodomelatonin-binding sites in the human kidney were stable, saturable, reversible, and of high affinity. The binding affinity was 15.2 +/- 2.5 pmol/L, and the binding density was 1.79 +/- 0.19 fmol/mg protein. The unity of the Hill coefficients and linearity of the Scatchard plots suggested that 2-[125I]iodomelatonin was bound to a single class of binding sites. Pharmacological characterization showed that these binding sites were highly specific to 2-iodomelatonin, melatonin, 6-hydroxymelatonin, and 6-chloromelatonin. Guanosine 5'-O-(3-thiotriphosphate) decreased the binding affinity and density of 2-[125I]iodomelatonin-binding sites in the kidney, suggesting that these binding sites are coupled to a G-protein. The characterization of 2-[125I]iodomelatonin-binding sites in normal kidney tissues taken from patients with transitional cell carcinoma or renal cell carcinoma suggests the existence of 2-[125I]iodomelatonin-binding sites in the human kidney cortex, which is in line with the findings of 2-[125I]iodomelatonin-binding sites in kidneys of other mammals and birds. The implication of a direct melatonin action on renal function in the human is proposed.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
AIM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
May
|
pubmed:issn |
0021-972X
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
80
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1560-5
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:7745000-Adult,
pubmed-meshheading:7745000-Aged,
pubmed-meshheading:7745000-Autoradiography,
pubmed-meshheading:7745000-Binding Sites,
pubmed-meshheading:7745000-Carcinoma, Renal Cell,
pubmed-meshheading:7745000-Carcinoma, Transitional Cell,
pubmed-meshheading:7745000-Female,
pubmed-meshheading:7745000-Guanosine 5'-O-(3-Thiotriphosphate),
pubmed-meshheading:7745000-Humans,
pubmed-meshheading:7745000-Iodine Radioisotopes,
pubmed-meshheading:7745000-Kidney Cortex,
pubmed-meshheading:7745000-Kidney Neoplasms,
pubmed-meshheading:7745000-Male,
pubmed-meshheading:7745000-Melatonin,
pubmed-meshheading:7745000-Middle Aged,
pubmed-meshheading:7745000-Tissue Distribution
|
pubmed:year |
1995
|
pubmed:articleTitle |
2-[125I]iodomelatonin-binding sites in the human kidney and the effect of guanosine 5'-O-(3-thiotriphosphate).
|
pubmed:affiliation |
Clarke Institute of Psychiatry, Toronto, Ontario, Canada.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|