Patterns of received aggression and the endocrine response were related to an increase in fecal glucocorticoid metabolites in an intact semifree-ranging group of Barbary macaque females in order to quantify the social stress incurred over a 20-week observation period. The novel result showed that immunoreactive cortisol and 11-oxoetiocholanolone found in the feces can indeed determine the endocrine response of the adrenal gland after a social stressor. After HPLC separation of pooled fecal samples, EIA analyses using three different assays (corticosterone, cortisol, and 11-oxoetiocholanolone) to quantify immunoreactive steroids showed that the corticosterone EIA had no distinctive immunoreactive peaks. Cortisol and 11-oxoetiocholanolone immunoassays showed respectively four and two immunoreactive substances. Time series analyses revealed a behaviorally initiated increase in concentrations of cortisol and 11-oxoetiocholanolone equivalents. Furthermore, both hormone curves exhibit comparable time functions. Either antibody is very suitable for determining glucocorticoid secretion after periods of stress.
General and Comparative Endocrinology – Elsevier
Published: Jan 1, 1999
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