rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
6
|
pubmed:dateCreated |
1984-5-11
|
pubmed:abstractText |
Intracerebroventricular (ICV) administration of kyotorphin (L-Tyr-L-Arg) and cyclo (N-methyl-L-Tyr-L-Arg), its analog, produced significant dose-dependent hypothermic responses in mice at an ambient temperature of 24 degrees C. The hypothermic action of kyotorphin was much greater than that of Met-enkephalin (Met-ENK) but less than that of cyclo NMTA. This action was slightly but not significantly reversed by intraperitoneally administered naloxone (8 mg/kg), an opioid receptor antagonist. Met-ENK utilized as a control peptide in this study also produced a dose-dependent hypothermia which was slightly antagonized by naloxone (8 mg/kg, IP). Thyrotropin releasing hormone (TRH) injected ICV produced hyperthermia dose-dependently. The hypothermia induced by kyotorphin, its cyclic analog and Met-ENK was prevented by a small dose of TRH (0.18 microgram = 0.5 nmol/animal) which by itself had little effect on body temperature. A TRH neuronal system in the brain may explain the mechanism of kyotorphin-induced hypothermia. However, there was little evidence of involvement of opioid receptors. The present study demonstrates a potent action of kyotorphin and its analog on thermoregulation.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Analgesics,
http://linkedlifedata.com/resource/pubmed/chemical/Endorphins,
http://linkedlifedata.com/resource/pubmed/chemical/Enkephalin, Methionine,
http://linkedlifedata.com/resource/pubmed/chemical/Naloxone,
http://linkedlifedata.com/resource/pubmed/chemical/Peptides, Cyclic,
http://linkedlifedata.com/resource/pubmed/chemical/Piperazines,
http://linkedlifedata.com/resource/pubmed/chemical/Thyrotropin-Releasing Hormone,
http://linkedlifedata.com/resource/pubmed/chemical/cyclo(N-methyltyrosylarginyl),
http://linkedlifedata.com/resource/pubmed/chemical/histidyl-proline diketopiperazine,
http://linkedlifedata.com/resource/pubmed/chemical/kyotorphin
|
pubmed:status |
MEDLINE
|
pubmed:issn |
0196-9781
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
4
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
859-63
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:6424102-Analgesics,
pubmed-meshheading:6424102-Animals,
pubmed-meshheading:6424102-Body Temperature Regulation,
pubmed-meshheading:6424102-Endorphins,
pubmed-meshheading:6424102-Enkephalin, Methionine,
pubmed-meshheading:6424102-Injections, Intraventricular,
pubmed-meshheading:6424102-Male,
pubmed-meshheading:6424102-Mice,
pubmed-meshheading:6424102-Mice, Inbred Strains,
pubmed-meshheading:6424102-Naloxone,
pubmed-meshheading:6424102-Peptides, Cyclic,
pubmed-meshheading:6424102-Piperazines,
pubmed-meshheading:6424102-Structure-Activity Relationship,
pubmed-meshheading:6424102-Thyrotropin-Releasing Hormone
|
pubmed:articleTitle |
Actions of intracerebroventricular administration of kyotorphin and an analog on thermoregulation in the mouse.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|