Effects of controllable vs. uncontrollable stress on circadian temperature rhythms

Kant, G.Jean; Bauman, Richard A.; Pastel, Ross H.; Myatt, Craig A; Closser-Gomez, Elizabeth; D’Angelo, Chiara

doi:10.1016/0031-9384(91)90289-z

Cited by 57 publications

(25 citation statements)

References 17 publications

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“…Future research should also address whether skin temperature captures chronic stress. Whilst SIH in response to an acute stressor is expected to be transient, recurrent exposure to physical or psychological acute stressors can generate chronic elevation in core body temperature 35,36 . Whether ongoing vasoconstriction contributes to this core elevation has not been tested explicitly.…”

Section: Discussionmentioning

confidence: 99%

Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds

Jerem

Herborn

McCafferty

et al. 2015

JoVE

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Stress, a central concept in biology, describes a suite of emergency responses to challenges. Among other responses, stress leads to a change in blood flow that results in a net influx of blood to key organs and an increase in core temperature. This stress-induced hyperthermia is used to assess stress. However, measuring core temperature is invasive. As blood flow is redirected to the core, the periphery of the body can cool. This paper describes a protocol where peripheral body temperature is measured non-invasively in wild blue tits (Cyanistes caeruleus) using infrared thermography. In the field we created a set-up bringing the birds to an ideal position in front of the camera by using a baited box. The camera takes a short thermal video recording of the undisturbed bird before applying a mild stressor (closing the box and therefore capturing the bird), and the bird's response to being trapped is recorded. The bare skin of the eye-region is the warmest area in the image. This allows an automated extraction of the maximum eye-region temperature from each image frame, followed by further steps of manual data filtering removing the most common sources of errors (motion blur, blinking). This protocol provides a time series of eye-region temperature with a fine temporal resolution that allows us to study the dynamics of the stress response non-invasively. Further work needs to demonstrate the usefulness of the method to assess stress, for instance to investigate whether eye-region temperature response is proportional to the strength of the stressor. If this can be confirmed, it will provide a valuable alternative method of stress assessment in animals and will be useful to a wide range of researchers from ecologists, conservation biologists, physiologists to animal welfare researchers.

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Section: Discussionmentioning

confidence: 99%

Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds

Jerem

Herborn

McCafferty

et al. 2015

JoVE

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“…The fact that the physiological and behavioral alterations following psychosocial stress can be counteracted by the application of antidepressants and sleep deprivation further strengthens the idea that these animal models might be valuable tools in the study of the mechanisms involved in the pathogenesis of depressive disorders (Fuchs et al, 1996;Koolhaas et al, 1990;Meerlo et al, 1996b). Telemetric studies showed that daily rhythms of body temperature, heart rate and motor activity are affected for several days in defeated rats (Kant et al, 1991;Meerlo et al, 1996aMeerlo et al, , 1996bTornatzky and Miczek, 1993). Because acute and chronic behavioral stressors are reported to increase the biosynthesis and release of CRF in various brain regions (Chappell et al, 1986;Imaki et al, 1991) and affect the number and sensitivity (Fuchs and Fl/igge, 1995;Sapolsky, 1989) of CRF binding sites in the brain and pituitary, high concentrations of central CRF might be hypothesized to play an important role in the Corticotropin-releasing Factor in the Rat 2q9 induction and persistence of the altered physiology and behavior of the defeated animals.…”

Section: Introductionmentioning

confidence: 99%

Physiological and behavioral effects of chronic intracerebroventricular infusion of corticotropin-releasing factor in the rat

Buwalda

Boer

Kalkeren

et al. 1997

Psychoneuroendocrinology

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“…Film densitometry of the hybridization signal revealed that VIP mRNA expression was significantly reduced by stress at 75 (t [8]=4.18; p<0.01) and 135 minute (t [8]=4.69; p<0.001) timepoints compared to controls. Analysis of VIP mRNA over individual neurons revealed no significant difference in cellular level of hybridization (data not shown), but there was a significant reduction in the percentage of labeled SCN neurons (Figure 1).…”

Section: Effect Of Stress On Vip Mrna Expression In the Scnmentioning

confidence: 95%

“…These include noveltyinduced wheel running, food restriction, and behavioral stress. Among those stressors reported to alter rhythm entrainment are social defeat, conditioned emotional responses, controlled vs uncontrolled shock exposure, surgery, and chronic exposure to varying types of mild stressors [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Changes in vasoactive intestinal peptide and arginine vasopressin expression in the suprachiasmatic nucleus of the rat brain following footshock stress

McGivern

2007

Neuroscience Letters

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The neuropeptides, arginine vasopressin (AVP) and vasoactive intestinal polypeptide (VIP) are synthesized by neurons of the suprachiasmatic nucleus (SCN) of the hypothalamus and are important regulators of SCN function. Previous studies have demonstrated that acute exposure to stressors can disrupt circadian activity rhythms, suggesting the possibility of stress-related alterations in the expression of these neuropeptides within SCN neurons. In this study, we examined the effect of intermittent footshock stress on AVP mRNA and heterogeneous nuclear RNA (hnRNA) and VIP mRNA expression in neurons of the SCN. Young adult male Sprague/Dawley rats were subjected to 15 seconds of scrambled intermittent footshock (0.50 mA pulses, 1 pulse/second, 300 msec) every 5 minutes for 30 minutes. Animals were sacrificed 75 or 135 min after the onset of stress and brains examined for AVP mRNA and hnRNA, and VIP mRNA using in situ hybridization. Footshock stress increased AVP hnRNA levels at the 75 min timepoint whereas AVP mRNA was elevated at both the 75 and 135 min. timepoints. In contrast, footshock stress decreased the number of cells expressing VIP mRNA in the SCN without changing hybridization level per cell. These data indicate that the disruptive effect of stress on activity rhythms correlate with alterations in the expression of regulatory peptides within the SCN.

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Effects of controllable vs. uncontrollable stress on circadian temperature rhythms

Cited by 57 publications

References 17 publications

Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds

Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds

Physiological and behavioral effects of chronic intracerebroventricular infusion of corticotropin-releasing factor in the rat

Changes in vasoactive intestinal peptide and arginine vasopressin expression in the suprachiasmatic nucleus of the rat brain following footshock stress

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