Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1982-4-12
pubmed:abstractText
Cerebrospinal fluid (CSF) obtained from the cisterna magna of conscious unrestrained guinea-pigs was assayed for oxytocin (OT), vasopressin (AVP) and neurophysin (NP). Basal levels of OT and AVP were approximately 5 and 15 fmol/ml, respectively, whereas NP levels were considerably higher (around 1 pmol/ml); there was no significant differences between males, females and lactating females. In lactating females, simultaneous samples of blood and CSF were obtained during suckling episodes. Despite large increases in plasma OT and NP at milk ejection, CSF levels remained unchanged throughout. Intracerebroventricular injection of 100 fmol OT produced an 8-fold rise in the concentration of this peptide in cisternal fluid within 10 min. Since CSF levels of OT and NP do not change when these peptides are released from the pituitary, we conclude that the presence of these peptides in CSF reflects activity of extrapituitary terminals and that these terminals are not activated during suckling.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0028-3835
pubmed:author
pubmed:issnType
Print
pubmed:volume
34
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
59-63
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Oxytocin and neurophysin in plasma and CSF during suckling in the guinea-pig.
pubmed:publicationType
Journal Article