Linked Life Data

10652208

Source:http://linkedlifedata.com/resource/pubmed/id/10652208

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2000-3-1
pubmed:abstractText
The present study was carried out to verify that the cells attached to the outside of the basement membrane of mechanically isolated follicles are theca cells and to evaluate the effect of growth hormone (GH) on these cells. Preantral follicles, 100-140 micrometer in diameter, were mechanically isolated from 11-day-old BDF1 hybrid immature mice, divided randomly into two groups, and cultured in vitro. One group was treated with 0.1% collagenase immediately after mechanical isolation in an attempt to remove theca cells attached to the outside of the basement membrane. The other group was untreated. Morphological examination revealed that 86.1% of mechanically isolated follicles before collagenase treatment had at least one theca cell around the basement membrane on the single section. However, after collagenase treatment no theca cells remained on the basement membrane of the follicles. Androstenedione secretion as a result of stimulation by 100 ng/ml hCG was significantly higher in the culture medium of the follicles with theca cells than in those of collagenase-pretreated follicles (p < 0.0001), indicating that the cells attached to the outside of the basement membrane were actually functional theca cells, not interstitial cells. To elucidate the effect of GH on theca cells, preantral follicles cultured in the presence of 1.0 mIU/ml GH were morphologically examined. Preantral follicles mechanically isolated from immature mice showed significant proliferation of not only granulosa cells but also theca cells in the presence of GH. In particular, theca cells, which remained dotted on the basement membrane in a small number just after isolation, proliferated and finally formed complete layers after the culture with GH. This is the first report that GH induced the proliferation of theca cells to form morphologically complete layers around the preantral follicle from 11-day-old mice.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-291X
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Academic Press.
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
268
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36-41
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Morphological assessment of the effect of growth hormone on preantral follicles from 11-day-old mice in an in vitro culture system.
pubmed:affiliation
Department of Obstetrics and Gynecology, 1st Department of Anatomy, Gunma University School of Medicine, Maebashi, Gunma, 371-8511, Japan.
pubmed:publicationType
Journal Article, In Vitro