Sweat secretion by human axillary apoeccrine sweat gland in vitro -- Sato and Sato 252 (1): 181 -- AJP - Regulatory, Integrative and Comparative Physiology: "Am J Physiol Regul Integr Comp Physiol 252: R181-R187, 1987;
0363-6119/87 $5.00
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AJP - Regulatory, Integrative and Comparative Physiology, Vol 252, Issue 1 181-R187, Copyright © 1987 by American Physiological Society

ARTICLES
Sweat secretion by human axillary apoeccrine sweat gland in vitro

K. Sato and F. Sato

Functional characteristics of isolated single human axillary apoeccrine sweat glands have been studied using in vitro sweat induction methods. Sustained copious clear fluid secretion was evoked by methacholine (MCh), epinephrine (EP), isoproterenol (ISO), and phenylephrine (PL) in decreasing order in a pharmacologically specific manner. Apoeccrine glands showed a higher cholinergic sensitivity than eccrine sweat glands, as shown by the apparent association constant for MCh of 2.7 X 10(-7) M compared with 2.1 X 10(-6) M for the axillary eccrine sweat gland. The average total sweat rate of the apoeccrine gland for a 30-min period was sevenfold higher than that of the eccrine sweat gland. In contrast, isolated apocrine glands showed intermittent pulsatile turbid sweat secretion in response to MCh or EP. The Na+ and K+ concentration of apoeccrine glands was nearly isotonic, whereas those of apo"