The effects of acute stress and acute corticosterone administration on the immobility response in rats

Exogenous administration of chronic corticosterone affects hepatic cholesterol metabolism in broiler chickens showing long or short tonic immobility

“…It's well known that 11β-HSD1 activates, while 11β-HSD2 inactivates glucocorticoids (GCs) (Tomlinson et al, 2004;Holmes and Seckl, 2006). It's reported that CORT effects on TI duration, and microinjection of CORT into brain or blood can increase TI duration in rats (Zamudio et al, 2009;Sandoval-Herrera et al, 2011). Our previous results showed that TI phenotype markedly affects the basal serum CORT concentration in broilers, and STI broilers showed higher level than LTI counterparts (Wang et al, 2013).…”

Defensive responses of Brandt's voles (Lasiopodomys brandtii) to chronic predatory stress

“…Acute responses take place in response to short-term stressors; they have a definite onset and may last for only a few hours. Chronic stress is defined as either multiple, frequent exposures, or long-term constant exposure, to stressors [48]. Exposure to chronic stressors activates a complex and integrated constellation of behavioral, physiological and neurochemical processes that adapt the animal to the stressful stimulus [19].…”

Níveis plasmáticos de corticosterona, testosterona e imunocompetência em Bufonídeos

“…As previously observed for other tetrapods, including anurans kept under captivity for hours to days [21][22][23][45][46][47][48][49][50], captivity maintenance for 24h increased CORT in R. icterica when compared to values found for free individuals in the field. These data support the interpretation that captivity is a stressor for these animals.…”