The pathology of human temperature regulation: Thermiatrics

Cabanac, Michel; Brinnel, H.

doi:10.1007/bf01940348

Cited by 20 publications

(4 citation statements)

References 59 publications

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“…Therefore, the reduced body temperature of newborn rats should not be referred to as hypothermia. To describe such a defended drop in body temperature the IUPS Commission for Thermal Physiology (2003) recommended the term anapyrexia, which was introduced by Cabanac and Brinnel (1987). In case of the newborn rats, the reduced body temperature might play an important role in preventing not only asphyxic damage (Zhao et al, 1996;Colbourne et al, 1997;Bona et al, 1998;Ginsberg, 1998), but also a secondary free-radical damage (Palmer, 1997;Maier et al, 2001) to the brain.…”

Section: Discussionmentioning

confidence: 97%

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Spontaneously reduced body temperature and gasping ability as a mechanism of extreme tolerance to asphyxia in neonatal rats

Rogalska

Caputa

2005

Journal of Thermal Biology

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Section: Discussionmentioning

confidence: 97%

“…Such a decrease in the set point of temperature regulation is referred to as anapyrexia (Cabanac and Brinnel, 1987). Anapyrexia is regarded the most efficient mechanism of the physiological defence against neurotoxicity induced by hypoxia (Kozak, 1997;Steiner and Branco, 2002).…”

Section: Introductionmentioning

confidence: 99%

Spontaneously reduced body temperature and gasping ability as a mechanism of extreme tolerance to asphyxia in neonatal rats

Rogalska

Caputa

2005

Journal of Thermal Biology

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“…These alternative mechanisms for heat loss, and determination of whether this an active or passive process, are still subject to investigation (Kooyman et al, 1980;Hill et al, 1987;Kooyman, 1989;Handrich et al, 1997;Ponganis et al, 2001). However, studies of the barnacle goose Branta leucopsis, a non-diving bird, have shown that it is possible for birds to experience anapyrexia (Cabanac and Brinnel, 1987) Energetics of diving in macaroni penguins conservation of energy may be important, even if the animal is active and food is not scarce . Data from king penguins suggest that the decrease in Tab is in some way facilitated and not just the consequence of ingesting cold food, as the Tab of foraging king penguins was lower than that in the stomach (Handrich et al, 1997).…”

Section: Abdominal Temperature Changes During Dive Boutsmentioning

confidence: 99%

Energetics of diving in macaroni penguins

Green

Butler

Woakes

et al. 2003

Journal of Experimental Biology

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SUMMARYHeart rate (fH), abdominal temperature (Tab) and diving depth were measured in thirteen free-ranging breeding female macaroni penguins. Measurement of these variables allowed estimation of the mass-specific rate of oxygen consumption (V̇O2) while diving and investigation of the physiological adjustments that might facilitate the diving behaviour observed in this species. In common with other diving birds, macaroni penguins showed significant changes in fH associated with diving, and these variables accounted for 36% of the variation in dive duration. When V̇O2 was calculated for dives of different durations, 95.3% of dives measured were within the calculated aerobic dive limit (cADL) for this species. Mean fH for all complete dive cycles was 147±6 beats min-1. When this fH is used to estimate V̇O2 of 26.2±1.4 ml min-1 kg-1 then only 92.8% of dives measured were within the cADL. Significant changes in abdominal temperature were not detected within individual dives, though the time constant of the measuring device used may not have been low enough to record these changes if they were present. Abdominal temperature did decline consistently during bouts of repeated diving of all durations and the mean decrease in Tab during a diving bout was 2.32±0.2°C. There was a linear relationship between bout duration and the magnitude of this temperature drop. There was no commensurate increase in dive duration during dive bouts as Tab declined, suggesting that macaroni penguins are diving within their physiological limits and that factors other than Tab are important in determining the duration of dives and dive bouts. Lowered Tab will in turn facilitate lower metabolic rates during diving bouts, but it was not possible in the present study to determine the importance of this energy saving and whether it is occurs actively or passively.

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“…The primary function of perspiration is regulation of body temperature mediated by sympathetic drive, which also leads to vasodilation and tachypnea, resulting in rapid heat dissipation to maintain homeostasis [9]. Other roles of perspiration include the excretion of toxins [10], maintenance of electrolyte balance, and control of microbial growth through antibacterial peptides [11].…”

Section: Discussionmentioning

confidence: 99%

Perspiration During Exercise in Patients With Stable Chronic Obstructive Pulmonary Disease

Zheng

Zhang

Wang

et al. 2020

Preprint

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Background: Chronic obstructive pulmonary disease (COPD) is a common progressive respiratory condition. Chills in the back region with excessive sweating are common symptoms in COPD patients. The aim of our study was to identify factors associated with increased rates of perspiration in COPD patients.Methods: We performed a prospective cohort study over the course of one year by recruiting 120 COPD patients and 32 healthy controls. All patients underwent pulmonary function testing (PFT) and cardiopulmonary exercise testing (CPET). The rate of perspiration was determined during CPET through sweat collection. The relationship between perspiration rate and multiple clinical and physiologic variables was explored through correlative analyses. Logistic regression analysis was used to reveal the multifactorial influence on the risk of acute COPD exacerbations.Results: Results showed that COPD patients were found to have a higher rate of perspiration during CPET than healthy individuals. We observed a direct relationship between perspiration rate and clinical measures of disease severity such as air flow limitations and the number of acute COPD exacerbations. The rate of perspiration was also found to be correlated with several clinical (i.e. number of hospitalizations) as well as physiologic variables (i.e. PFT and CPET parameters). Lastly, we generated a logistic regression model which predicted the likelihood of acute COPD exacerbations with an accuracy of 87.4%. Thus, elevated perspiration rates during exercise are observed in COPD patients, which is also directly correlated with the degree of dyspnea and disease progression.Conclusions: perspiration may be used as a biomarker for disease state with prognostic value.

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The pathology of human temperature regulation: Thermiatrics

Cited by 20 publications

References 59 publications

Spontaneously reduced body temperature and gasping ability as a mechanism of extreme tolerance to asphyxia in neonatal rats

Spontaneously reduced body temperature and gasping ability as a mechanism of extreme tolerance to asphyxia in neonatal rats

Energetics of diving in macaroni penguins

Perspiration During Exercise in Patients With Stable Chronic Obstructive Pulmonary Disease

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