Linked Life Data

2737736

Source:http://linkedlifedata.com/resource/pubmed/id/2737736

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-8-10
pubmed:abstractText
Arteriolar internal and external diameters in the cremaster muscle of two-kidney, one clip hypertensive rats (2K1C) were measured in vivo with video microscopy, both before and after the topical application of adenosine (10(-4) M). Arteriolar density was determined by stereologic techniques. Mean arterial blood pressure was significantly elevated in the 2K1C rats, rising to 186 +/- 6 mm Hg by 8 weeks compared with 113 +/- 4 mm Hg in controls. Lumens of larger arterioles showed a structural reduction at 2 weeks of hypertension and remained at the same level through 8 weeks, while arterioles of control rats showed a progressive increase in diameter with age (101 +/- 6 microns in 2K1C vs. 158 +/- 8 microns in controls at 8 weeks after operation). Wall-to-lumen ratios of larger arterioles were significantly increased at 2, 4, and 8 weeks of hypertension, but cross-sectional wall area was significantly reduced at 8 weeks. Medial hypertrophy was not evident at any stage of hypertension. Arteriolar rarefaction of smaller arterioles was functional at 2 weeks and structural at 8 weeks of hypertension. Vascular tone of the smaller arterioles was elevated in the developing and chronic stages of hypertension. At 2 weeks of hypertension when the structural reduction in diameters of larger arterioles was progressing, the increased vasoconstriction and functional rarefaction may have contributed to the elevated resistance. At 8 weeks, the marked diameter reductions of larger arterioles (36% in first-order arterioles and 25% in second-order arterioles) account for most of the increased resistance to flow.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0194-911X
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36-43
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Arteriolar changes in developing and chronic stages of two-kidney, one clip hypertension.
pubmed:affiliation
Department of Physiology, Eastern Virginia Medical School, Norfolk 23501.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't