343 ENDOGENOUS OPIATES MODIFY FETAL CARDIOVASCULAR RESPONSES TO STRESS

Endogenous opiates and stress-induced eating.

Maickel, G. K. W. Yim, Life Sci. 26, 2113 (1980)] and failed to observe their reported decrease ofTP eating after naloxone. We have also used greater numbers of TP trials with the same negative results [N. L. Ostrowski, N. Rowland, T. L. Foley, J. L. Nelson, L. D. Reid, PharmacQl. Biochem. Behav. 14, 549 (1981)]. In each case we measured the amount consumed, amount spilled, and duration of food...

Endogenous opiates and behavioral responses to environmental novelty.

Endogenous opiates (endorphins) mediate a variety of motivational and behavioral states. We examined the possible contributions of endorphins to the exploratory behavior of mice. Naloxone, ablocker of opiate receptors, depressed hole board exploratory activity and entry into a novel environment. It also reduced responding for sensory stimulation. Finally, a direct correlation w a s demonstrated...

Exercise and Endogenous Opiates

Exercise and Endogenous Opiates

The discovery of endogenous opiates in 1975 (1) generated considerable research concerning the effects of exercise on the release of these peptides, particularly on -endorphin, which represents the main focus of this chapter. Previous research considered changes in peripheral blood concentrations induced by different modes of physical activity, influences of training status on the secretion of ...

2 Exercise and Endogenous Opiates

The discovery of endogenous opiates in 1975 (1) generated considerable research concerning the effects of exercise on the release of these peptides, particularly on -endorphin, which represents the main focus of this chapter. Previous research considered changes in peripheral blood concentrations induced by different modes of physical activity, influences of training status on the secretion of ...