Linked Life Data

7121711

Source:http://linkedlifedata.com/resource/pubmed/id/7121711

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1982-12-2
pubmed:abstractText
Previous reports have demonstrated that neuronal nuclei of rabbit, mouse and rat cerebral hemispheres exhibit a short DNA repeat length of 160 bp compared to the more typical repeat size of 200 bp found in glial nuclei and other cell types of higher eukaryotes. In this study we report that the conversion of chromatin to a short DNA repeat length in rat cerebral hemisphere neurons is a gradual process which begins between the first and second day after birth and is complete by 8 days. In these neurons, histone H1 appears to be less accessible to degradation by trypsin in the newborn rat brain compared to the 8 day old rat. This suggests that the developmental shift to a short DNA repeat length may be accompanied by a dispersal or decondensation of neuronal chromatin which results in an increased accessibility of neuronal histone H1 to degradation by trypsin. The increase in nuclear DNA content to 3.5C which has been reported in rat cortical neurons during early postnatal development does not appear to be associated with a selective amplification of a subset of DNA sequences as determined by DNA reassociation kinetics.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0364-3190
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
525-39
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Developmental changes in chromatin organization in rat cerebral hemisphere neurons and analysis of DNA reassociation kinetics.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't