MAINTENANCE OF A “MILIEU INTERIEUR,” which allows our cells to function away from the ancient sea, is one of the most important functions of the body. Maintenance of constant extracellular osmolarity and sodium concentration depends on a precise balance between intake and excretion of sodium and water. Intakes of water and sodium are governed by an urge driven by the lack of these substances, b...

In human, thirst and antidiuretic hormone (ADH) are controlled by similar sensitive osmoregulatory mechanisms such that above a certain osmotic threshold (280-288 mOsm/kg H20) there is a linear relationship between the increase in plasma osmolality and increase in ADH and thirst. The purpose of this study was to estimate plasma arginine vasopressin (PAVP) using thirst perception (TP) and plasma...

While Huntington's disease (HD) is a condition that primarily involves the basal ganglia, there is evidence to suggest that the hypothalamus is also affected. Because the osmoreceptors regulating thirst are situated in the circumventricular region of the hypothalamus, we were interested in whether altered thirst is a part of the HD phenotype. We used the LABORAS behavioural monitoring system an...

The Welfare Quality(®) protocols provide a multidimensional assessment of welfare, which is lengthy, and hence limited in terms of practicality. The aim of this study was to investigate potential 'iceberg indicators' which could reliably predict the overall classification as a means of reducing the length of time for an assessment and so increase the feasibility of the Welfare Quality(®) protoc...

INTRODUCTION: Thirst sensation in Congestive Heart Failure (CHF) patients is caused by diuretic administration and fluid consumption limitation. Unhandled thirst leads to a disobedient patient limitation that causes the condition worsen. This research aimed analyse frozen strawberries administration's effects on with CHF . MATERIAL AND METHOD: The method used was quasi-experiment pre-test post-...

A PRECISE BALANCE BETWEEN intakes and losses of water and sodium is important for the maintenance of the “milieu interieur.” Water intake is stimulated by increased plasma osmolality, by volume contraction, by a fall in blood pressure, and by high sodium concentration in the gastrointestinal tract. Volume contraction and low blood pressure activate the systemic reninangiotensin system, and a hi...

OBJECTIVE To evaluate the effects of a change in water intake on mood and sensation in 22 habitual high-volume (HIGH; 2-4 L/d) and 30 low-volume (LOW; <1.2 L/d) drinkers who were asked to respectively decrease and increase their daily water intake. METHOD During baseline HIGH consumed 2.5 L and LOW 1 L of water/day. During 3 controlled intervention days HIGH's water intake was restricted to 1...

The physiological basis of thirst has been a debatable subject for well over a century. Recent investigations have centered around the old controversy as to whether thirst is a general or localized sensation. The historical literature on this subject has been presented by Cannon (1918). Montgomery (1931) has briefly summarized the more recent contributions. Schiff in 1867 (cited by Cannon, 1918...

In large-type goats that were fed on dry forage twice daily, dry forage intake was markedly suppressed after 40 min of feeding had elapsed. The objective of this study was to clarify whether or not increases in plasma osmolality and subsequent thirst sensations produced by dry forage feeding suppress dry forage intake. Eight large-type male esophagealand ruminal-fistulated goats (crossbred Japa...

Ultraendurance open water swimming presents unique physiological challenges. This case study aimed to describe cardiovascular and perceptual responses during a successful solo channel swim. Investigators followed a female swimmer's Catalina Channel (32.2 km) crossing, monitoring water temperature (T(water)) and air temperature (T(air)), distance remaining (DR), average velocity, and heart rate ...