Linked Life Data

6422001

Source:http://linkedlifedata.com/resource/pubmed/id/6422001

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1984-4-26
pubmed:abstractText
It has been postulated that thyrotropin releasing hormone (TRH) may play an active role in synaptic transmission. If such is the case, an inactivation mechanism must exist, in analogy to other neuroactive substances. In these studies we have considered the possibility that TRH may be taken up by rat hypothalamic slices. We observed that in the presence of bacitracin TRH was stable in the medium up to 90 min. We detected intact [3H]Pro-TRH associated with the slices as evidenced by TLC and paper electrophoresis; the association was time-dependent up to 60 min, and the maximum tissue-to-medium ratio was 1.3 at this time. At 5 min incubation, 30-50% of the TRH was not extracellular, and the plot of TRH-associated tissue versus the total amount of tissue was linear up to two hypothalami per flask. The association was saturable (Km 1.07 microM) and temperature-dependent, and the saturable part of the accumulation was inhibited by ouabain, dinitrophenol, and the absence of glucose. These results suggest that an uptake mechanism for TRH exists in the hypothalamus; its physiological relevance remains to be elucidated.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-3042
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
981-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Accumulation of thyrotropin releasing hormone by rat hypothalamic slices.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't