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Biophysical and Endocrine-Metabolic Changes during Menopausal Hot Flashes: Increase in Plasma Free Fatty Acid and Norepinephrine Levels
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1989
Year
GynecologyHot FlashesDermatologyEndocrine-metabolic ChangesMetabolic SyndromeAdrenal GlandBody CompositionHealth SciencesNorepinephrine LevelsEndocrine MechanismSkin ConductanceMenopausal Hot FlashesPostreproductive HealthEndocrinologyFinger Blood FlowPhysiologyMenopauseHormone TherapyMetabolismMedicineWomen's Health
Thermocutaneous, vascular, metabolic and hormonal changes were investigated during 11 hot flashes from 6 postmenopausal women. The first detectable change was an increase in finger blood flow with a concomitant enhancement of skin conductance. The increase in skin conductance was followed rapidly by a sharp rise in finger temperature. The main endocrine-metabolic changes associated with the above phenomena were a sharp increase in plasma free fatty acids (approximately 65%), norepinephrine (approximately 100%) and LH (approximately 20%) levels. Plasma glucose and cortisol tended to be increased but did not reach statistical significance; on the other hand, plasma insulin, glucagon, growth hormone, epinephrine and dopamine remained unchanged.