Subject(s)
Adrenal Cortex/physiology , Catecholamines/urine , Climate , Hormones/blood , Hormones/urine , Sympathetic Nervous System/physiology , Thyroid Gland/physiology , Adolescent , Adrenal Cortex/metabolism , Adult , Age Factors , Child , Child, Preschool , Circadian Rhythm , Female , Hot Temperature , Humans , Infant , Male , Middle Aged , Seasons , Sex Factors , Sympathetic Nervous System/metabolism , Thyroid Gland/metabolism , Turkmenistan , WorkABSTRACT
Higher values of the exponent power function of the perception of temperature elevation (1.66, 1.32, and 1.50) in the summer than in the winter (1.40, 1.08, and 0.84) were established in seasonal investigations in people at room air temperatures of 20, 28, and 40 degrees C. Consequently, following adaptation to the seasonal high temperature a person can feel a smaller temperature increment than in the winter. This suggests a reorganization in the functional activity of the temperature analyzer under the prolonged influence of seasonal high temperature.
Subject(s)
Adaptation, Physiological/physiology , Hot Temperature , Perception/physiology , Seasons , Adult , Humans , MaleABSTRACT
Hyperthermia and overheating of the rat isolated organs induce significant changes of the binding of receptors' specific blockers and catecholamine synthesis. One of the main mechanisms of the organism response to the temperature actions involves a local rearrangement in intensity of different stages of the adrenergic process. Possible significance of these changes in the hypothalamus for synchronisation of the organism's response to extreme temperature effects, is discussed.
Subject(s)
Norepinephrine/biosynthesis , Receptors, Adrenergic, beta/physiology , Temperature , Adrenal Glands/metabolism , Animals , Cerebral Cortex/metabolism , Dihydroalprenolol/pharmacokinetics , Fever/physiopathology , Heart Atria/metabolism , Hypothalamus/metabolism , Male , Quinuclidinyl Benzilate/pharmacokinetics , Rats , Rats, Wistar , Synaptosomes/metabolism , Time FactorsABSTRACT
At ambient temperatures 20 degrees, 28 degrees and 40 degrees C the exponent of the power function of warmth perception was 1.40, 1.08 and 0.84 in winter and 1.66, 1.32 and 1.50 in summer, resp. Seasonal heat adaptation seems to lead to an increase of the warmth perception due to functional modification of temperature analyser activity.
Subject(s)
Adaptation, Physiological/physiology , Body Temperature Regulation/physiology , Seasons , Thermosensing/physiology , Adult , Body Temperature/physiology , Humans , Humidity , Male , Psychophysics , Rectum , Skin Temperature/physiology , TemperatureSubject(s)
Adaptation, Physiological/physiology , Blood Glucose/analysis , Body Temperature/physiology , Calcium/blood , Sodium/blood , Temperature , Adult , Ear Canal , Humans , Male , Osmotic Pressure , Rectum , Seasons , TurkmenistanSubject(s)
Brain/physiopathology , Fever/physiopathology , Receptors, Muscarinic/physiology , Synaptosomes/physiology , Animals , Cerebral Cortex/physiopathology , Hypothalamus/physiopathology , Male , Quinuclidinyl Benzilate/pharmacokinetics , Rats , Rats, Inbred Strains , Temperature , Time Factors , TritiumSubject(s)
Skin Temperature , Adult , Hot Temperature , Humans , Humidity , Male , Physical ExertionSubject(s)
Decision Theory , Sensory Receptor Cells/physiology , Temperature , Humans , Neurons/physiologySubject(s)
Body Temperature Regulation , Body Temperature , Desert Climate , Temperature , Work , Adolescent , Adult , Animals , Humans , Rabbits , Seasons , Skin Temperature , Time Factors , TurkmenistanABSTRACT
A 10-day study of the dynamics of adreno- and cholinosensitivity of isolated fragments of the small intestine of Wistar rats exposed to temperature of 45 degrees C for 30 and 60 min, revealed an increase in adreno- and cholinosensitivity in hyperthermia. A significant correlation exists between the body temperature and adrenoreactivity. Normalizing of body temperature is followed by reciprocal changes in adreno- and cholinosensitivity.
Subject(s)
Acetylcholine/pharmacology , Hot Temperature , Intestine, Small/physiology , Norepinephrine/pharmacology , Animals , Body Temperature/drug effects , Drug Interactions , In Vitro Techniques , Muscle Contraction/drug effects , Muscle Relaxation/drug effects , Muscle, Smooth/physiology , Rats , Rats, Inbred Strains , Time FactorsABSTRACT
Isolated fragments of small intestine of Wistar rats exposed to 45 degrees C for 30 and 60 min revealed an increase in adreno- and cholinosensitivity. Normalizing of body temperature was followed by reciprocal changes in adreno- and cholinosensitivity.
