Aminophylline alters the core temperature response to acute hypoxemia in newborn and older guinea pigs.

Naloxone does not alter the "regulated" decrease in core temperature during hypoxemia in guinea pigs.

In newborns and adults of a number of species, exposure to acute hypoxemia produces a "regulated" decrease in core temperature, the mechanism of which is unknown. The present experiments were carried out in chronically instrumented newborn (5-10 days of age; n = 59) and older (25-30 days of age; n = 61) guinea pigs to test the hypothesis that the endogenous opioids mediate this regulated decrea...

Evaluation of Acute Aflatoxicosis on Humoral Immune Response to Foot-and Mouth Disease Vaccination in Guinea Pigs

Age-dependent core temperature responses of conscious rabbits to acute hypoxemia.

Experiments were carried out on chronically instrumented newborn and older rabbits to characterize their core temperature (T(c)) responses to acute hypoxemia and to differentiate "forced" vs. "regulated" thermoregulatory responses. Three age ranges of kits were studied: 4-6, 9-11, and 28-30 days of age. During an experiment, T(c), selected ambient temperature (T(a)), and oxygen consumption were...

Evaluation of Humoral Immune Response to Foot-and-Mouth Disease Vaccination in Experimentally Infected Guinea Pigs with Trypanosoma evansi

Cerebral cortex does not modulate "regulated" decrease in core temperature during hypoxemia in rats.

In newborns and adults of a number of species including humans, exposure to acute hypoxemia produces a "regulated" decease in core temperature, the mechanism of which is unknown. Considering that various cortical areas participate in autonomic regulation including thermoregulation, the present experiments were carried out to test the hypothesis that the cerebral cortex plays a role in modulatin...