Linked Life Data

495729

Source:http://linkedlifedata.com/resource/pubmed/id/495729

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1979-12-27
pubmed:abstractText
We used labeled microspheres to measure bone and marrow blood flow under control conditions and during several interventions. In dogs, blood flow to compact cortical bone (femoral diaphysis) was 2 +/- 0.1 ml.min-1. 100 g-1, and in hematopoietic marrow (femur), flow was 24 +/- 5 ml.min-1. 100 g-1. Hematopoietic cancellous bones (sternum, ilium) received substantial blood flow. We estimate that as much as 11% of cardiac output is directed to the skeleton. Bone and marrow vessels were responsive to several stimuli. During exercise, vascular resistance in bone increased two- to fourfold, in contrast to profound vasodilation in adjacent skeletal muscle. Hemmorrhage also increased bone vascular resistance. Bone and marrow vessels responded to humoral stimuli: norepinephrine increased vascular resistance and adenosine decreased resistance. Bone vessels also responded to neural stimuli: stimulation of carotid baroreceptors decreased vascular resistance, and activation of sympathetic pathways by baroreceptor deafferentation in cats increased vascular resistance. These studies indicate that bone and marrow vessels respond actively to physiological stresses and to several humoral and neurogenic stimuli
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0002-9513
pubmed:author
pubmed:issnType
Print
pubmed:volume
237
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
H440-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Neurohumoral regulation of blood flow to bones and marrow.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.