Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2-3
|
pubmed:dateCreated |
1992-12-1
|
pubmed:abstractText |
The effect of systemic administration of the gamma-aminobutyric acid (GABA) uptake inhibitor, R(-)N-(4,4-di(3-methyl-thien-2-yl)-but-3-enyl) nipecotic acid, hydrochloride (tiagabine) (previously NO-328), on extracellular GABA levels in the globus pallidus, ventral pallidum and substantia nigra of awake Sprague-Dawley rats was investigated using in vivo microdialysis. Tiagabine was administered in doses of 11.5 or 21.0 mg/kg i.p. (ED50 and ED85 doses, respectively, for inhibiting pentylenetetrazole-induced tonic seizures). Tiagabine increased the extracellular concentrations of GABA in globus pallidus with peak values 310% of basal level (after 21 mg/kg) and 240% of basal level (after 11.5 mg/kg). A significant increase in extracellular GABA levels was also found in the ventral pallidum (280% increase after 11.5 mg/kg and 350% increase after 21 mg/kg) and in the substantia nigra where the ED85 dose of tiagabine (21 mg/kg) produced a peak value of 200% compared to the basal level. Thus, tiagabine acts as a GABA uptake inhibitor in vivo also.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Sep
|
pubmed:issn |
0014-2999
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
22
|
pubmed:volume |
220
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
197-201
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:1425991-Analysis of Variance,
pubmed-meshheading:1425991-Animals,
pubmed-meshheading:1425991-Brain,
pubmed-meshheading:1425991-Chromatography, High Pressure Liquid,
pubmed-meshheading:1425991-Globus Pallidus,
pubmed-meshheading:1425991-Male,
pubmed-meshheading:1425991-Nipecotic Acids,
pubmed-meshheading:1425991-Pentylenetetrazole,
pubmed-meshheading:1425991-Rats,
pubmed-meshheading:1425991-Rats, Sprague-Dawley,
pubmed-meshheading:1425991-Seizures,
pubmed-meshheading:1425991-Substantia Nigra,
pubmed-meshheading:1425991-gamma-Aminobutyric Acid
|
pubmed:year |
1992
|
pubmed:articleTitle |
The gamma-aminobutyric acid (GABA) uptake inhibitor, tiagabine, increases extracellular brain levels of GABA in awake rats.
|
pubmed:affiliation |
Novo Nordisk A/S, Pharmaceuticals Research, CNS, Måløv, Denmark.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|