Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-9-10
pubmed:abstractText
To determine whether germ cells perform any function in gonadal sexual differentiation, development of gonads in the medaka, Oryzias latipes, after exposure to busulfan was investigated. Busulfan suppressed proliferation of early germ cells, thus significantly reducing the number of germ cells and generating regions without germ cells in the developing gonads. Globular structures were observed in the parenchyma in these regions. The structure was male specific, developed at the same time as acinus (seminiferous tubule precursor), surrounded by the basal lamina, and contained characteristic desmosomes. These results strongly suggest that these globular structures are the precursors of seminiferous tubules devoid of germ cells. In the ovary, no follicles were observed but a well-developed ovarian cavity was evident. From these results we conclude that differentiation of gonadal parenchyma cells, except for follicular ones, is not germ cell dependent, though morphological differentiation of the somatic cells seems to follow the differentiation of germ cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0022-104X
pubmed:author
pubmed:copyrightInfo
Copyright 2001 Wiley-Liss, Inc.
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
290
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
402-10
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Sexual differentiation of germ cell deficient gonads in the medaka, Oryzias latipes.
pubmed:affiliation
Graduate School of Science and Technology, Faculty of Science, Niigata University, Ikarashi, Niigata 950-2181, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't