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- W2226935376 abstract "gamma-Aminobutyric acid (GABA) content of the brain increases during hypoxia and hypercapnia and GABA by itself is a central ventilatory depressant and may depress metabolism as well. Therefore the effect of centrally administered GABA by ventriculocisternal perfusion on O2 consumption (VO2) and CO2 production (VCO2) was studied in pentobarbital-anesthetized dogs. GABA (30 mM) in mock cerebrospinal fluid (CSF) was perfused for 15 min at the rate of 1.0 ml/min followed by perfusion with mock CSF alone. Body temperature, perfusion pressure, and CSF pH were kept constant. Minute ventilation (VE) was kept constant mechanically. Under these conditions, VO2, VCO2, alveolar ventilation (VA), and relative pulmonary dead space volume (VD/VT) were measured. During perfusion with 30 mM GABA, mean VO2 (+/- SE) decreased from 96.5 +/- 3.3 to 81.9 +/- 5.1 ml/min, VCO2 from 72.1 +/- 3.8 to 60.7 +/- 3.0 ml/min, and VA from 1.7 +/- 0.1 to 1.3 +/- 0.1 l/min. VD/VT increased from 0.55 +/- 0.02 to 0.65 +/- 0.01. Perfusion with mock CSF alone restored these parameters to initial levels within 15 min. We conclude that centrally administered GABA depresses VO2 and VCO2. This reduction in metabolic function is independent of the central modulatory effects of GABA on respiration." @default.
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- W2226935376 date "1986-08-01" @default.
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- W2226935376 title "Effect of centrally administered gamma-aminobutyric acid on metabolic function" @default.
- W2226935376 doi "https://doi.org/10.1152/jappl.1986.61.2.472" @default.
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