Linked Life Data

3822248

Source:http://linkedlifedata.com/resource/pubmed/id/3822248

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1987-4-15
pubmed:abstractText
Ultrastructural studies of nerve myelin emphasize its static aspects. However, current work indicates that the myelin multilayer is poised for a supramolecular transition from a compact to an expanded form. In teleosts, the membrane pair becomes 27 A thicker. The trigger for this expansion is physiological levels of Ca. Varying proportions of the myelin can be trapped in the expanded state by transferring an excised specimen from Ca-containing to Ca-free medium in order to prevent expansion of the remaining compact myelin. Images of the myelin multilayer show that the expansion occurs in the aqueous spaces between lipid bilayers. Previously we demonstrated the reversal of expansion by removing Ca under special conditions. These results together lead us to suggest that myelin may expand locally in normal nerve function, while wholesale expansion may be an early step in myelin breakdown in vivo.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
14
pubmed:volume
73
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
167-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Calcium ions trigger the expansion in bistable myelin.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S.