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1

Influence of serotonin (5-HT) on the thermoregulatory set-point

100%

Yakimenko M. A., Sitnikov V. D.

Acta Physiologica Polonica

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1990

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tom 41

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nr 7

2

Effect of ethanol on the processes of thermoregulation

100%

Huttunen P.

Acta Physiologica Polonica

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1990

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tom 41

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nr 1-3

3

Metabolism and thermoregulation in the Mongolian gerbil Meriones unguiculatus

88%

Wang D., Wang Y., Wang Z.

Acta Theriologica

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2000

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tom 45

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nr 2

Oxygen consumption, thermal conductance and body temperature of Meriones unguiculatus (Milne-Edwards, 1867) were measured at a temperature range from 5 to 40°C. The lowest mean metabolic rate tBMR) was 2.13 ± 0.14 ml02 g~ 1 h , which is higher than the predicted values based on their body mass. The thermal neutral zone (TNZ) was 26 to 38°C. Mean body temperature below the TNZ was 38.4 ± 0.5°C. Mean thermal conductance below the TNZ was 0.179 ± 0.037 ml02 g-1 • h-1 • °C which is also higher than predicted values based on their body mass. Thermoregulatory characteristics of Mongolian gerbils are very different from that found in arid-adapted small mammals. The extreme severe climate perhaps is the main selective force faced by Mongolian gerbils during their evolution with their macroenvironments.

4

Influence of some biologically active agents on brain temperature sensitivity in the rabbit

75%

Yaitchnikov I. K., Borodin Y. S.

Acta Physiologica Polonica

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1990

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tom 41

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nr 7

5

Importance of dynamics of sweating in men during exercise

75%

Grucza R., Hanninen O.

Acta Physiologica Polonica

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1990

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tom 41

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nr 7

Grucza R. and Hänninen O.: Importance of dynamics of sweating in men during exercise. Acta Physiol. Pol. Influence of dynamics of sweating on rectal temperature increase was tested in 3 groups of men performing cycle exercise with intensity of 65, 90 and 120 W, respectively, in 22°C chamber temperature and 30% of relative air humidity. During exercise at 65 and 90 W the subjects wore suits while exercising with intensity of 120 W they wore only shorts. The dynamics of sweating was described by delay in onset of sweating and time constant of the reaction. Wearing caused significant increase in skin humidity and decreased evaporative rate of sweating. Sweat rate during steady state was related to the metabolic rate in naked (r = 0.89, p < 0.002) as well as in wearing subjects (r = 0.93, p < 0.01). Delay in onset of sweating was, in average, 5 min with a time constant of 7 min. Both factors showed a tendency to be shorter with increasing work intensity. Mean increase in rectal temperature was proportional to the intensity of exercise although the individual ATre correlated well with the dynamics of sweating in naked (r = 0.83, p < 0.01) and wearing subjects (r = 0.84, p < 0.01). Since ΔTre was smaller in subjects with shorter inertia time of sweating in response to beginning of exercise at the same intensity it is concluded that the dynamics of sweating can play an important role in limiting body temperature increase in working men.

6

Osmotic and nonosmotic influences on thermoregulatory evaporation in dehydration and rehydration

75%

Beker M. A., Turlejska E.

Acta Physiologica Polonica

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1990

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tom 41

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nr 1-3

7

Is the prostaglandin E2 responsible for pyrogen fever centrally or peripherally derived?

75%

Milton A. S.

Acta Physiologica Polonica

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1990

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tom 41

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nr 1-3

8

Different effects of centrally and peripherally administered neuropeptides on temperature regulation

75%

Szelenyi Z.

Acta Physiologica Polonica

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1990

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tom 41

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nr 1-3

9

Relation between body-size and thermoregulation behavior: postprandial thermophily in spiny-tailed agama Uromastyx acanthinura Bell

75%

Berec M., Stara Z., Polakova S.

Polish Journal of Ecology

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2014

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tom 62

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nr 1

Ectothermal vertebrates regulate their body temperature within definite limits to maintain physiological processes at their optimal levels. Among others, food processing and absorption are strongly temperature-dependent. Deficiency of adequate temperatures limits ectotherms in growth and maintenance. On the other hand, thermoregulatory behavior is costly and should be constrained by many factors. Using artificial thermal gradients (26–44℃ ), we measured temperature preferences of 10 spiny-tailed agamas (Uromastyx acanthinura) in controlled indoor experiment. Each lizard could choose place in the terrarium before and after feeding. Then, temperature preferences during pre-feeding and post-feeding periods were compared. We found significant increase of preferred temperature after feeding. Detailed view revealed that there is consistent influence of body size: bigger lizards maintained higher temperature during the whole experiment. We hypothesize that bigger potential predation risk on smaller lizards due to their size would force them to choose less optimal conditions.

10

Nest thermoregulation and metabolic rates in the hornet Vespa crabro L.

75%

Schmolz E., Lamprecht I., Schricker B.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

11

Intracerebroventricular physostigmine enhances blood pressure and heat loss in running rats

75%

Pires W., Wanner S. P., La Guardia R. B., Rodrigues L. O. C., Silveira S. A., Coimbra C. C., Marubayashi U., Lima N. R. V.

Journal of Physiology and Pharmacology

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2007

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tom 58

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nr 1

The aim of this study was to evaluate the effects of the stimulation of central cholinergic synapses in the regulation of heat loss in untrained rats during exercise. The animals were separated into two groups (exercise or rest) and tail skin temperature (Ttail), core temperature and blood pressure were measured after injection of 2 µL of 5 x 10-3 M physostigmine (Phy; n = 8) or 0.15 M NaCl solution (Sal; n = 8) into the lateral cerebral ventricle. Blood pressure was recorded by a catheter implanted into the abdominal aorta, Ttail was measured using a thermistor taped to the tail and intraperitoneal temperature (Tb) was recorded by telemetry. During exercise, Phy-treated rats had a higher increase in mean blood pressure (147 ± 4 mmHg Phy vs. 121 ± 3 mmHg Sal; P < 0.001) and higher Ttail (26.4 ± 1.0° C Phy vs. 23.8 ± 0.5° C Sal; P < 0.05) that was closely related to the increase in systolic arterial pressure (r = 0.83; P < 0.001). In addition, Phy injection attenuated the exercise-induced increase in Tb compared with controls without affecting running time. We conclude that the activation of central cholinergic synapses during exercise increases heat dissipation due to the higher increase in blood pressure.

12

Insecticides and thermoregulation in insects

75%

Tegowska E.

Pestycydy

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2003

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nr 1-4

13

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Water loss distribution in exercising men under hot conditions

63%

Grucza R.

Acta Physiologica Polonica

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1987

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tom 38

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nr 1

14

The research on infrared radiation fluctuation of breast cancer patients with the method of regulation thermography

63%

Krupka K.

Current Topics in Biophysics. Supplement

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2011

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tom 34

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nr A: Posters

15

Human acclimation to work in warm and humid environments

63%

Kubica R., Tyka A., Zuchowicz A., Czubala M.

Journal of Physiology and Pharmacology

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1996

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tom 47

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nr 3

16

Exercise training and 3-day head down bed rest deconditioning: exercise thermoregulation

63%

Smorawinski J., Mlynarczyk C., Ziemba A. W., Mikulski T., Cybulski G., Grucza R., Nazar K., Kaciuba-Uscilko H., Greenleaf J. E.

Journal of Physiology and Pharmacology

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2005

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tom 56

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nr 1

Bed rest (BR) deconditioning causes excessive increase of exercise core body tempera-ture, while aerobic training improves exercise thermoregulation. The study was designed to determine whether 3 days of 6° head-down bed rest (HDBR) affects body temperature and sweating dynamics during exercise and, if so, whether endurance training before HDBR modifies these responses. Twelve healthy men (20.7±0.9 yrs, VO2max: 46±4 ml·kg-1·min-1) underwent HDBR twice: before and after 6 weeks of endurance training. Before and after HDBR, the subjects performed 45 min sitting cycle exercise at the same workload equal to 60% of VO2max determined before training. During exercise the VO2, HR, tympanic (Ttymp) and skin (Tsk) temperatures were recorded; sweating dynamics was assayed from a ventilated capsule on chest. Training increased VO2max by 12.1% (p<0.001). Resting Ttymp increased only after first HDBR (by 0.22 ± 0.08 °C, p<0.05), while exercise equilibrium levels of Ttymp were increased (p<0.05) by 0.21 ± 0.07 and 0.26 ± 0.08 °C after first and second HDBR, respectively. Exercise mean Tsk tended to be lower after both HDBR periods. Total sweat loss and time-course of sweating responses were similar in all exercise tests. The sweating threshold related to Ttymp was elevated (p<0.05) only after first HDBR. In conclusion: six-week training regimen prevents HDBR-induced elevation of core temperature (Ttymp) at rest but not during ex-ercise. The post-HDBR increases of Ttymp without changes in sweating rate and the tendency for lower Tsk suggest an early (<3d) influence of BR on skin blood flow.

17

Exercise thermoregulation in Thai and Polish male subjects

63%

Tyka A., Kubica R., Zuchowicz A., Szygula Z., Golab S., Czubala M., Cherdrungsi P.

Journal of Physiology and Pharmacology

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1995

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tom 46

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nr 2

18

Thermal energetics of torpid silver-haired bats Lasionycteris noctivagans

63%

Dunbar M. B.

Acta Theriologica

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2007

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tom 52

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nr 1

Heterothermic endotherms can reduce energy expenditure by using controlled reductions in various physiological processes, collectively called torpor. Torpor is an important mechanism which allows many small endotherms to survive seasonal periods of inactivity, but there are few data on metabolic rate during torpor (TMR) for small, tree-living bats during winter. Therefore, I report TMR of silver-haired batsLasionycteris noctivagans (LeConte, 1831) measured at various ambient temperatures (Ta). Bats were captured in October 2004 in southwestern Missouri, USA. NoL. noctivagans had been captured at this time in this area previously. Mean body mass of 3 individuals was 10.49 g±0.3 SE. TMR varied with Ta and mean TMR was lowest at 5°C at 0.363 ml O2/h (2.03 mW). These data indicate that the TMR ofL. noctivagans is similar to another migratory, tree-roosting bat (the eastern red batLasiurus borealis; Müller, 1776), and suggest that Ta near 5°C is energetically optimal for hibernatingL. noctivagans in this area.

19

Nitric oxide production and thermoregulation in Paramecium caudatum

63%

Malvin G. M., Cecava N., Nelin L. D.

Acta Protozoologica

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2003

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tom 42

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nr 4

20

Ecological differences between two sympatric species of armadillos [Xenarthra, Mammalia] in a temperate region of Argentina

51%

Abba A. M., Cassini M. H.

Acta Theriologica

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2010

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tom 55

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nr 1

35-44

Morpho-physiological specialization related to foraging can act as constraints on behaviour and ecological patterns of abundance and distribution. We tested this prediction in two species (weeping or screaming hairy armadillos Chaetophractus vellerosus Gray, 1865 and mulitas Dasypus hybridus Desmarest, 1804) that represent the two subfamilies of armadillos (Dasypodidae, Xenarthra): Euphractinae and Dasypodinae. The first subfamily possesses a well-developed masticatory apparatus that is considered primitive within the Xenarthra, while Dasypodinae show reductions in various aspects of cranial morphology. We sampled signs (burrows and foraging holes) and captured both species on 34 farms randomly selected in the north-eastern Pampas region of Argentina. We analyzed several niche dimensions. The two species showed significant differences in habitat use, seasonal patterns and diet. Weeping armadillos were generalists in their diet and active throughout the year. They were associated with calcareous-sand soil, as expected for a burrowing animal of the deserts. They tolerated a wide range of environmental conditions. We found that mulitas are myrmecophagous, and that they demonstrated a reduction in body temperature and activity during the cold season. As expected from their geographical distribution, mulitas used mainly vegetation with high cover and were associated with humic soils. Niche segregation between the two species of armadillos appeared to originate from different degrees of dietary specialization.

Ograniczanie wyników

Influence of serotonin (5-HT) on the thermoregulatory set-point

Effect of ethanol on the processes of thermoregulation

Metabolism and thermoregulation in the Mongolian gerbil Meriones unguiculatus

Influence of some biologically active agents on brain temperature sensitivity in the rabbit

Importance of dynamics of sweating in men during exercise

Osmotic and nonosmotic influences on thermoregulatory evaporation in dehydration and rehydration

Is the prostaglandin E2 responsible for pyrogen fever centrally or peripherally derived?

Different effects of centrally and peripherally administered neuropeptides on temperature regulation

Relation between body-size and thermoregulation behavior: postprandial thermophily in spiny-tailed agama Uromastyx acanthinura Bell

Nest thermoregulation and metabolic rates in the hornet Vespa crabro L.

Intracerebroventricular physostigmine enhances blood pressure and heat loss in running rats

Insecticides and thermoregulation in insects

Water loss distribution in exercising men under hot conditions

The research on infrared radiation fluctuation of breast cancer patients with the method of regulation thermography

Human acclimation to work in warm and humid environments

Exercise training and 3-day head down bed rest deconditioning: exercise thermoregulation

Exercise thermoregulation in Thai and Polish male subjects

Thermal energetics of torpid silver-haired bats Lasionycteris noctivagans

Nitric oxide production and thermoregulation in Paramecium caudatum

Ecological differences between two sympatric species of armadillos [Xenarthra, Mammalia] in a temperate region of Argentina