Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1992-6-5
pubmed:abstractText
Numerous studies have implicated opioids in the regulation of hypothalamic functions. Dynorphin, which is co-expressed with vasopressin in the magnocellular neurons of the paraventricular and supraoptic nuclei, is co-regulated with vasopressin in response to hyperosmolality and appears to inhibit vasopressin and oxytocin release from the posterior pituitary. Enkephalin is present in paraventricular parvocellular neurons and its expression is elevated in response to various stresses. However, enkephalin's presence and roles in paraventricular and supraoptic magnocellular neurons are uncertain. By giving rats daily intraperitoneal injections of hypertonic saline for up to 12 days, we induced a marked increase in enkephalin expression in magnocellular neurons of the paraventricular and supraoptic nuclei, beyond what develops from drinking hypertonic saline. Our results suggest that enkephalin expression in both vasopressin and oxytocin neurons may increase in response to chronic stresses and provide another source of enkephalin in addition to the parvocellular neurons.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0169-328X
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
111-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Chronic stress elevates enkephalin expression in the rat paraventricular and supraoptic nuclei.
pubmed:affiliation
Laboratory of Cell Biology, National Institute of Mental Health, Bethesda, MD 20892.
pubmed:publicationType
Journal Article