Assuntos
Humanos , Lactente , Masculino , Feminino , Temperatura Alta , Regulação da Temperatura Corporal , Transtornos da Nutrição do Lactente/fisiopatologia , Velocidade do Fluxo Sanguíneo , Vasos Sanguíneos/fisiopatologia , Água Corporal , Dilatação , Cabelo , Homeostase , Jamaica , Distúrbios Nutricionais/complicações , Dermatopatias/etiologia , Temperatura Cutânea , Glândulas Sudoríparas , Sudorese , TemperaturaRESUMO
Estimations of levels of heat-stable alkaline phosphatase in amniotic fluid and maternal serum were performed in 78 normal and 27 pre-eclamptic pregnant mothers. The concentration of this enzyme was greater in maternal serum than in amniotic fluid in both normal pregnancy and pre-eclampsia, and the corelation between maternal serum HSAP and liquor HSAP in both groups was statistically significant. Mean values of liquor HSAP were higher in pre-eclampsia than in normal pregnancy at corresponding periods of gestation, and in both groups there was an abrupt rise in levels after the 36th week of pregnancy (AU)
Assuntos
Humanos , Feminino , Fosfatase Alcalina/análise , Líquido Amniótico/enzimologia , Gravidez , Pré-Eclâmpsia/enzimologia , Fosfatase Alcalina/sangue , Idade Gestacional , Temperatura AltaRESUMO
Xylose excretion tests were performed on rats living under the prevailing tropical conditions and on rats living for four weeks at 4§C. Following an oral dose of 32 mg. of D-xylose the cold adapted rats excreted significantly more xylose than the tropical rats. When the xylose was administered by intraperitoneal injection the two groups had almost identical excretion rates. This combination indicates that cold adapted animals absorb xylose more efficiently than the tropical animals. This effect may be due in part to thyroid stimulation, since xylose absorption is markedly depressed by thiouracil. Increased absorption might be explained by the reported observations of an increase in size of the intestinal tract in cold adapted rats. To see if there was, in addition, a qualitative change, the alkaline phosphatase of the intestinal mucous membrane was estimated. Cold adapted rats had nearly twice the concentration of alkaline phosphatase as thiouracil treated animals (AU)
Assuntos
Ratos , 21003 , Absorção Intestinal , Temperatura Alta , Xilose , Alterações na Temperatura CorporalRESUMO
In the summer of 1960 a study of the effect of heat on the efficiency of field workers in the sugar industry in British Guiana was undertaken. Sweat loss averaged 598 gm. per hour during the cutting of cane and 897 gm. during the loading procedure. The muscular cramps which occurred in these workers were similar to those of heat cramps in etiology and occurred in about 1 percentof cane cutters in the course of the year (AU)
