Regional differences in the Na+ reabsorption of sweat glands.
نویسندگان
چکیده
Sweat glands with a higher capacity for both sweat secretion and sodium reabsorption would contribute more effectively to thermoregulation, with less tendency to cause sodium depletion. The rate at which sweat glands reabsorb sodium and chloride does not increase proportionally as the rate of sweating increases, so that [Na+] and [Cl–] in sweat sampled on the skin surface increase with sweating. It has been reported that there is a significant positive correlation between sweat secretory capacity and the capacity of sweat to reabsorb Na+ (Sato and Dobson, 1970) and between sweat gland size and sweat secretory capacity (Sato and Sato, 1983). It has also been suggested that the sweat glands on the trunk may be larger than those on the limbs (Inoue and Shibasaki, 1996). Based on these findings, it is expected that the sweat glands on the trunk have a superior Na+ reabsorptive capacity than those on the limbs. We know little about the slope of the relation of sweat [Na+] to sweating rate at different body sites. Obtaining such information may be valuable to a better understanding of regional differences in sweat glands capacity for Na+ reabsorption. Therefore, we compared the relationship between sweating rate and [Na+] on the chest, back, forearm and thigh.
منابع مشابه
Transductal fluxes of Na, K, and water in the human eccrine sweat gland.
MANGOS, JOHN. Transductal fluxes of Na, K, and water in the human eccrine sweat gland. Am. J. Physiol. 224(5): 1235-1240. 1973.--The bidirectional fluxes of Na, the net influx of K, and the net fluxes of water were studied in the human sweat duct in vitro by free-flow microperfusion with sweat resembling the primary secretory fluid and by microanalysis of the fluid samples obtained. Full-thickn...
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ورودعنوان ژورنال:
- Applied human science : journal of physiological anthropology
دوره 17 5 شماره
صفحات -
تاریخ انتشار 1998