Journal ArticleDOI
Corticosterone “basal levels” and response to ether anesthesia in rats on a water deprivation regimen
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TLDR
Water deprivation resulted in accelerated corticosterone responses to acute stressors, but the acceleration was minimized when the rats were maintained under continuous ether anesthesia, indicating temporal entrainment and a stable, elevated baseline cortic testosterone concentration.About:
This article is published in Physiology & Behavior.The article was published on 1979-04-01. It has received 59 citations till now. The article focuses on the topics: Blood sampling & Corticosterone.read more
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Effects of chronic stress on food intake in rats : influence of stressor intensity and duration of daily exposure
TL;DR: The results suggest that a severe stressor such as IMO reduces food intake to a certain level that was independent on its daily duration, and after repeated exposure to the same stressor, only a slight tendency to recover normal food intake was observed.
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Neuropeptide Y (NPY) in the area of the hypothalamic paraventricular nucleus activates the pituitary-adrenocortical axis in the rat
TL;DR: An activating effect of NPY is demonstrated on the pituitary-adrenocortical axis both in conscious and anaesthetized rats which may reflect the anatomical relationship between NPY fibres and CRF neurones in the PVN.
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Influence of male and female petters on plasma cortisol and behaviour: can human interaction reduce the stress of dogs in a public animal shelter?
TL;DR: Results indicate that a previously observed sex difference in the effectiveness of petters in reducing the cortisol response was not due to some difference in odor or other nonbehavioural stimulus quality of men and women.
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Plasma Cortisol Levels of Dogs at a County Animal Shelter
TL;DR: The results suggest that confinement in a public animal shelter produces a prolonged activation of the hypothalamic-pituitary-adrenal axis and it appears that some subtle aspect of interaction with a human may be capable of moderating this response.
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Behavioral and glucocorticoid responses of adult domestic dogs (Canis familiaris) to companionship and social separation
TL;DR: The results highlight the importance of human companionship for the domestic dog and point to a difference in the nature of the social relationships of dogs with humans and with conspecifics.
References
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Fluorometric Determination of Corticosterone and Cortisol in 0.02–0.05 Milliliters of Plasma or Submilligram Samples of Adrenal Tissue1
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Food and water restriction shifts corticosterone, temperature, activity and brain amine periodicity.
TL;DR: It is demonstrated that presence of normal light-dark alteration is not sufficient for the maintenance of normal circadian periodicity of plasma corticosteroid levels, and a reversal of AM/PM ratios of hippocampal norepinephrine and of serotonin levels in these animals is demonstrated.
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Increased rate of response of the pituitary-adrenal system in rats adapted to chronic stress.
TL;DR: During adaptation to a chronic stress the pituitary-adrenal system is not inhibited by the circulating steroid level but is actually hypersensitive to additional stimuli, which may cause an increased drive to the ACTH-secreting mechanism which compensates or overrides the cortical feedback.
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Feedback Regulation of Adrenocorticotropin Secretion in “Basal” and “Stress” Conditions: Acute and Chronic Effects of Intrahypothalamic Corticoid Implantation
TL;DR: Seven days following hypothalamic implantation of cortisol acetate, adrenal sensitivity was reduced, but not sufficiently to account for the inhibition of the stress response, and the response to electric shock was significantly inhibited 4 hr af...
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Bidirectional effects of reinforcement shifts on pituitary adrenal activity.
TL;DR: Two opposing effects on the pituitary adrenal system of shifts in amount of reward from that expected are revealed: a frustration effect-an increase in pituitARY adrenal activity as a result of a sudden decrease in frequency of reward, and an elation effect-a decrease in pituitsary Adrenal activity produced by a sudden increase in reward frequency.