Irregular activation of individual sweat glands in human sole observed by a videomicroscopy
Irregular activation of individual sweat glands in human sole observed by a videomicroscopy
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DOI：
10.1016/s1566-0702(01)00229-6
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发表时间：
2001-04-12
影响因子：
2.7
通讯作者：
Mano, T
中科院分区：
文献类型：
--
作者：
Nishiyama, T;Sugenoya, J;Mano, T
在四名男性受试者中，通过使用视频显微镜观察到人类脚底单个汗腺的汗液分泌，并与通过显微神经摄影术记录的胫神经的催汗神经活动相关。根据自发汗时汗腺分泌的发生率，可将个体汗腺分为活跃型、不活跃型和不活跃型。汗液分泌所需的催汗爆发的阈值幅度因腺体而异。汗液分泌的次数与阈值振幅呈显著正相关。即使发生阈上爆发，汗腺通常也不能产生汗液分泌：仅46.1 +/- 3.8%（平均值+/- S.E.M.）的阈上爆发引起汗液分泌。汗液分泌的失败往往出现在连续几次爆发后，间隔很短。尽管汗腺活动的可变性。募集的汗腺数量与催汗爆发的幅度呈线性相关（P < 0.001）。因此，虽然来自每个汗腺的汗液分泌主要取决于催汗神经活动的强度，但是每个汗腺的活动可能由于催汗纤维的不规则激活和可能的腺体的一些内在因素而暂时波动。(C)2001 Elsevier Science B. V.保留所有权利。
Sweat secretion from individual sweat glands on the human sole was observed in four male subjects by using a videomicroscope and correlated with sudomotor neural activity recorded from the tibial nerve by means of microneurography. Individual sweat glands could he distinguished as active, less active and inactive according to the incidence of sweat secretion during spontaneous sweating. The threshold amplitude of the sudomotor burst necessary for sweat secretion varied from gland to gland. The number of sweat secretion was significantly related to the threshold amplitude. Sweat glands often failed to produce sweat secretion even when a suprathreshold burst occurred: only 46.1 +/- 3.8% (mean +/- S.E.M.) of the suprathreshold bursts elicited sweat secretion. Failure of the sweat secretion tended to appear after several bursts occurred consecutively with short intervals. In spite of the variability in sweat gland activity. the number of sweat glands recruited was linearly related to the amplitude of the sudomotor burst (P < 0.001). Thus, although sweat secretion from each sweat gland depends primarily on the intensity of sudomotor neural activity, the activity of each sweat gland may fluctuate temporally as the result of irregular activation of sudomotor fibers and possibly some intrinsic factors of the gland. (C) 2001 Elsevier Science B.V. All rights reserved.