Several plant species reveal the tolerance to acute desiccation stress (eg. Antarctic lichens [3,4,5]). During rehydration process they can take water directly from gaseous phase in [2]. These facts focus the attention on the response of the isolated cell organellae to extreme environmental conditions. Photosynthetic membranes were selected by their importance for plant photosynthetic activity....

Th e drying characteristics of “Granny Smith” apples were analysed using a tunnel drier at diff erent temperatures and diff erent pre-treatments. „Granny Smith“ apples were cut into rectangle-shaped samples 20x20x5 mm in size. Th e drying temperatures for non-treated samples varied from 50oC to 80oC at airfl ow velocity of 2.8 m s-1. Prior to drying at 60oC, the samples were pretreated either t...

BACKGROUND The aim of this study was to investigate the influences of rehydration and food consumption on salivary flow, pH, and buffering capacity during bicycle ergometer exercise in participants. METHODS Ten healthy volunteers exercised on a bicycle ergometer at 80% of their maximal heart rate. These sessions lasted for two periods of 20 min separated by 5-min rest intervals. Volunteers we...

This experiment tested the role of oropharyngeal and gastric afferents on hypothalamic activation in dehydrated rats instrumented with gastric fistulae and allowed to drink water or isotonic saline compared with euhydrated controls (CON). Rats were water deprived for 48h (48 WD) or 46h WD with 2h rehydration with water (46+W) or isotonic saline (46+S). 46+W and 46+S rats were given water with f...

We studied c-Fos staining in adult male rats after 48 h of water deprivation and after 46 h of water deprivation with 2 h of access to water or physiological saline. Controls were allowed ad libitum access to water and physiological saline. For immunocytochemistry, anesthetized rats were perfused with a commercially available antibody for c-Fos. Dehydration significantly increased plasma vasopr...

The efficacy of oral rehydration solution without bicarbonate was compared with World Health Organisation oral rehydration solution in 98 young children in a double blind and randomised clinical trial. These children had varying degrees of dehydration and acidosis caused by acute watery diarrhoea. The mean serum bicarbonate concentration on admission was 13.3 mmol(mEq)/1 in the former and 13.1 ...

A total of 315 young children with acute diarrhoea were included in a double blind, hospital based multicentre trial of loperamide at two dose levels (0.8 mg and 0.4 mg/kg/24 h), given with standard oral rehydration therapy versus placebo plus oral rehydration therapy. The overall recovery rate was slowest in the placebo group and fastest in the group given loperamide 0.8 mg. Comparisons betwee...

Tonga, like many developing countries, suffers from a shortage of medical staff and a high morbidity and mortality from paediatric diarrhoeal disease. In 1980 a programme was started to train medical assistants and village administrators in the correct use of oral rehydration salt solution for rehydration. The effect on morbidity, mortality, and admission to hospital over the six years 1978-83 ...