This study was conducted to investigate the behavioral and physiological changes of heat stressed Corriedale ewes exposed to water deprivation. Nine Corriedale ewes (average BW = 45 ± 3.7 kg) were individually fed diets based on maintenance requirements in metabolic crates. Ewes were assigned into three groups (9 sheep per treatment) according to a 3 × 3 Latin square design for 3 periods with 2...

Background Effects of selective rapid eye movement sleep (REMS) deprivation are usually studied with the single platform-onwater method (flower pot). In this protocol, animals are placed on a small platform (SP) surrounded by water, and as muscle atony is typical for REMS, they fall into the water and awaken immediately as they switch to REMS. A large platform (LP) is also used, in order to sep...

Previously it has been shown that green microalga Chlamydomonas reinhardtii is capable of prolonged H2 photoproduction when deprived of sulfur. In addition to sulfur deprivation (-S), sustained H2 photoproduction in C. reinhardtii cultures can be achieved under phosphorus-deprived (-P) conditions. Similar to sulfur deprivation, phosphorus deprivation limits O2 evolving activity in algal cells a...

The effect on water and electrolyte balance of stress, simulated by intravenous infusion of cortisol, was studied using 24 18-mo-old Merino wethers (37.0 +/- 0.94 kg mean body weight [BW]) over 72 h. The sheep were allocated to one of four groups: 1) no water/no cortisol (n = 6); 2) water/no cortisol (n = 4); 3) no water/cortisol (n = 6); and 4) water/cortisol (n = 4). Animals allocated to the ...

introduction: there are several evidences that show various environmental stresses during pregnancy, affect physiological behavior of the offspring. in this study the effects of rem (rapid eye movement) sleep deprivation of pregnant rats on spatial learning of adult male offspring by morris water maze were investigated. methods: water tank technique was used for inducing rem sleep deprivation. ...

Effects of water deprivation on rhythmic bursting of sympathetic nerve activity (SNA) were investigated in anesthetized, bilaterally vagotomized, euhydrated (control) and 48-h water-deprived (WD) rats (n = 8/group). Control and WD rats had similar baseline values of mean arterial pressure, heart rate, end-tidal CO2, and central respiratory drive. Although integrated splanchnic SNA (sSNA) was gr...

Gottlieb, Helmut B., Lisa L. Ji, Heath Jones, Maurice L. Penny, Tiffany Fleming, and J. Thomas Cunningham. Differential effects of water and saline intake on water deprivation-induced c-Fos staining in the rat. Am J Physiol Regul Integr Comp Physiol 290: R1251–R1261, 2006. First published November 23, 2005; doi:10.1152/ajpregu.00727.2005.—We studied c-Fos staining in adult male rats after 48 h ...

Differential Regulation of TRPC4 in the vasopressin magnocellular system by water 1 deprivation and hepatic cirrhosis in the rat. 2 Running Head: TRPC4 regulation by water deprivation and hepatic cirrhosis 3 Authors: T. Prashant Nedungadi, J. Thomas Cunningham 4 5 Department of Integrative Physiology, and Cardiovascular Research Institute 6 University of North Texas Health Science Centre at For...

For years, it was assumed that an individual’s response to thirst would ensure sufficient water intake to maintain euhydration. In fact, for most healthy individuals, thirst does ensure adequate hydration. In 2004, the Institute of Medicine (IOM) established age and sex recommendations for total water intake. Definitions of terms used herein are defined elsewhere and in the published workshop p...

The effect of 24-h water deprivation and subsequent drinking on systemic fluid balance and subjective sensations has been determined in human beings. The deprivation caused significant intracellular and extracellular depletions, thirst, and a dry unpleasant tasting mouth. During rehydration, subjects drank 65% of their total intake within 2.5 min. The marked decrease in drinking rate thereafter...