Linked Life Data

1705909

Source:http://linkedlifedata.com/resource/pubmed/id/1705909

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-4-15
pubmed:abstractText
The cell types in the adenohypophysis of Neoceratodus resemble closely those already described for Lepidosiren and Protopterus. Four of these were immunocytochemically identified as prolactin cells, gonadotropes, corticotropes, and melanotropes. Antiserum to bullfrog growth hormone could not distinguish between prolactin cells and somatotropes. Anti-bullfrog prolactin, however, did selectively stain the prolactin cells, which allowed the identification of the somatotropes. The presumptive thyrotropes, as the only remaining cell type in the pars distalis, can then be tentatively identified by default. Likewise a PAS-positive cell type in the pars intermedia had no immunoreactivity to any of the antisera used. The functional significance of this cell remains to be demonstrated. One of the more unexpected findings was the presence of large numbers of cells immunoreactive to alpha-MSH in the proximal pars distalis. The implications of the presence of these cells in adult lungfish are discussed. The distribution of cell types within the pituitary of Neoceratodus showed more regionalization than is present in the other lungfish and corresponded more closely to that described for primitive actinopterygian fish. The general structure of the pituitary of Neoceratodus also resembled primitive actinopterygian fish more closely than it did amphibians, unlike the pituitaries of Lepidosiren and Protopterus. The evolutionary significance of this is also discussed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0016-6480
pubmed:author
pubmed:issnType
Print
pubmed:volume
80
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
274-87
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
The adenohypophysis of the Australian lungfish, Neoceratodus forsteri--an immunocytological study.
pubmed:affiliation
School of Biological Science, Macquarie University, Sydney, New South Wales, Australia.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't