Linked Life Data

1350317

Source:http://linkedlifedata.com/resource/pubmed/id/1350317

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1992-6-19
pubmed:abstractText
We studied the effect of adrenergic blockade on hepatic venous hyperglycemia and the activation of a hepatic glycogenolytic enzyme, phosphorylase-a, in response to cerebral cholinergic activation. Neostigmine was injected into the third cerebral ventricle of bilaterally adrenodemedullectomized (ADMX) rats, while somatostatin and insulin were administered intravenously. Hepatic venous plasma glucose concentrations and hepatic phosphorylase-a activity were measured. Intracerebroventricular injection of neostigmine (5 x 10(-8) mol) caused increases in hepatic venous glucose concentrations and hepatic phosphorylase-a activity. Both of these changes were prevented by intraperitoneal (IB) pretreatment with phentolamine (5 x 10(-7), 1 x 10(-6) mol) without the intervention of insulin secretion, but not by pretreatment with the alpha-adrenoreceptor antagonist phenoxybenzamine (1 x 10(-6) mol), the beta-adrenoreceptor antagonist propranolol (1 x 10(-6) mol), the alpha 1-antagonists prazosin or bunazosin (1 x 10(-6) mol), the alpha 2-antagonist yohimbine (1 x 10(-6) mol), or prazosin (5 x 10(-7) mol) plus yohimbine (5 x 10(-7) mol). These results suggest that phentolamine prevented brain-mediated hepatic glycogenolysis by a mechanism that may not be classified pharmacologically as involving either alpha 1- or alpha 2-receptors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0026-0495
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
471-5
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Effects of adrenergic blockers on central nervous system-mediated hyperglycemia in fed rats.
pubmed:affiliation
Third Department of Internal Medicine, Nagoya University School of Medicine, Japan.
pubmed:publicationType
Journal Article