Linked Life Data

7675122

Source:http://linkedlifedata.com/resource/pubmed/id/7675122

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1995-10-19
pubmed:abstractText
The effects of carvedilol (10 mg kg-1 day-1), a peripheral vasodilator and oxygen free radical scavenger, on nerve conduction and blood flow were examined in streptozotocin-diabetic rats. Rats were treated from induction of diabetes for 1 month in a preventive experiment; effects of treatment in non-diabetic rats were also examined. Diabetes caused a 20.0% (P < 0.001) reduction in sciatic motor conduction and a 14.7% (P < 0.001) deficit in saphenous sensory conduction. Diabetic rats given carvedilol treatment had motor and sensory conduction velocities which did not differ significantly from those of non-diabetic controls, but were greater than for untreated diabetes (P < 0.001). Carvedilol treatment did not significantly alter nerve conduction in non-diabetic rats. The nutritive (capillary) component of sciatic endoneurial blood flow, measured by microelectrode polarography and hydrogen clearance, was 45.8% (P < 0.001) reduced by diabetes. This was completely corrected (P < 0.001) by carvedilol treatment in diabetic rats, flow being in the upper half of the non-diabetic range. In non-diabetic rats, carvedilol caused a 30.6% (P < 0.05) elevation in blood flow. Hydrogen clearance data also revealed a shift away from non-nutritive (arterio-venous anastomotic) towards nutritive flow in treated diabetic rats (P < 0.05). We conclude that the data support a neurovascular hypothesis of diabetic neuropathy. Carvedilol, via vasodilator and anti-oxidant actions, prevents the nutritive blood flow changes that lead to nerve dysfunction.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0028-1298
pubmed:author
pubmed:issnType
Print
pubmed:volume
351
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
630-5
pubmed:dateRevised
2010-8-25
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Neuroprotective effects of carvedilol in diabetic rats: prevention of defective peripheral nerve perfusion and conduction velocity.
pubmed:affiliation
Department of Biomedical Sciences, University of Aberdeen, Marischal College, Scotland, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't