Autonomic basis for hypoxia-induced hyperglycaemia in toads (Bufo paracnemis).
1. Toads were exposed to steady hypoxic conditions (inspired PO2 = 40 mmHg) for 60 min. 2. Within the exposure time, glucose concentrations rose from about 30 mg% to a steady level of 45 mg%. The development of hyperglycaemia reached a stable level within 40 min. 3. This effect was eliminated by treatment with either propranolol or atropine, suggesting combined cholinergic and adrenergic activation.
Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil.
E
E
de Castro-e-Silva
L G
LG
Branco
M L
ML
Glass
D000818:Animals; D001341:Autonomic Nervous System / Q000503:physiopathology*; D001786:Blood Glucose / Q000032:analysis; D002025:Bufonidae; D006943:Hyperglycemia / Q000209:etiology*; D007700:Kinetics; D010100:Oxygen / Q000502:physiology*
D001786:Blood Glucose; D010100:Oxygen