Linked Life Data

2323225

Source:http://linkedlifedata.com/resource/pubmed/id/2323225

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-5-21
pubmed:abstractText
Data on testis weights, sperm counts, and synaptonemal complexes are presented for mice carrying the following Robertsonian translocations: Rb(6.15)lAld; Rb(4.6)2Bnr; Rb(4.15)4Rma; Rb(6.15)lAld/Rb(4.6))2Bnr, which is male-sterile; and Rb(6.15)lAld/Rb(4.15)4Rma, which is male-fertile. In RblAld/Rb2Bnr sperm were absent or sparse, whereas the sperm count in RblAld/Rb4Rma was just over 50% of the parental value. The translocated chromosomes appeared as fully paired bivalents in homozygotes, as trivalents in single heterozygotes, and as quadrivalents in compounds. About 20-40% of trivalents had unsynapsed ends. The proportion of quadrivalents with unsynapsed ends was about 85% in the male-sterile compound, compared with 75% in the male-fertile compound. The proportion of quadrivalents associated with XY was about 70% in both. Testis weights, but not sperm counts, were found to differ in two of three reciprocal crosses. It is concluded that, in addition to pairing failure and autosome/XY association, the effect of translocations on spermatogenesis is affected by other factors, including genetic background, inbreeding, and perhaps environmental factors. It remains to be elucidated whether pairing failure and XY association are primary or secondary effects.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0301-0171
pubmed:author
pubmed:issnType
Print
pubmed:volume
53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
26-31
pubmed:dateRevised
2010-8-25
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Pachytene pairing and sperm counts in mice with single Robertsonian translocations and monobrachial compounds.
pubmed:affiliation
Department of Genetics and Biometry, University College London, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't