Linked Life Data

1174714

Source:http://linkedlifedata.com/resource/pubmed/id/1174714

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1975-12-23
pubmed:abstractText
The effects of neomycin (7.0 mM) on 45Ca movements and distribution were investigated in canine aortae and in canine carotid and terminal mesenteric arteries. Uptake of 45Ca was measured in calcium-free solution; the 45Ca tissue spaces in the carotid and terminal mesenteric arteries were 2--4 times greater than those observed in the aorta. Exposure of the aortae and the terminal mesenteric arteries to 1.5 mM Ca++ during the washout elicited large increases in 45Ca efflux in both preparations (increase in terminal mesenteric greater than aorta). Moreover, in all three arterial preparations, neomycin reduced 45Ca uptake and induced a sustained increase in 45Ca efflux (effects on terminal mesenteric larger than or equal to carotid greater than aorta). The terminal mesenteric and carotid arteries may accumulate and bind 45Ca at superficial membrane sites (readily exchangeable 45Ca) to a greater degree than does the aorta. If Ca++ located at these membrane sites contributes directly to the maintenance of mechanical responsiveness, then agents which alter membrane binding of Ca++ (e.g. neomycin) may exert a stronger action on these highly reactive vessels. Thus, contractile responsiveness in peripheral arteries may depend upon depots of superficially bound Ca++ to a greater degree than in the more centrally located aorta.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0303-6847
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
248-60
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1975
pubmed:articleTitle
Effects of neomycin on 45Ca binding and distribution in canine arteries.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.