TOADS TASTE SODIUM WITH THEIR SKIN: SENSORY FUNCTION IN A TRANSPORTING EPITHELIUM
TOADS TASTE SODIUM WITH THEIR SKIN: SENSORY FUNCTION IN A TRANSPORTING EPITHELIUM
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蟾蜍用皮肤品尝钠：运输上皮的感觉功能
DOI：
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
S. Hillyard
中科院分区：
文献类型：
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作者：
K. Hoff;S. Hillyard
两栖动物通常不经口饮水。相反，它们通过皮肤的渗透流获得水分（Bentley和Yorio，1979）。先前对沙漠蟾蜍（Bufo punctatus）的研究表明，将脱水的动物放在用纯水润湿的表面上会采取一种特殊类型的行为，称为吸水反应（WR），其中蟾蜍张开后肢并摆动身体，以最大限度地扩大皮肤与表面接触的面积（Brekke等人，1991年）。如果表面用高渗尿素溶液润湿，动物在表面上移动，好像在寻找可吸收的水，很快就从表面跳下，而不启动WR行为。由于皮肤是动物与表面接触的唯一部分，因此得出结论，皮肤中的受体使动物能够避免在水不可用的表面上的WR行为。同样，蟾蜍没有启动WR行为时，NaCl作为溶质。这些观察结果表明，蟾蜍有皮肤受体检测渗透压，本身，或皮肤受体的特定溶质。
Amphibians do not normally ingest water orally. Rather, they obtain water by osmotic flow across their skin (Bentley and Yorio, 1979). Previous studies of the desert toad, Bufo punctatus, showed that dehydrated animals placed on a surface moistened with pure water adopted a particular type of behavior, termed the water absorption response (WR), in which toads splayed their hindlimbs and oscillated their body to maximize the area of skin in contact with the surface (Brekke et al. 1991). If the surface was moistened with a hyperosmotic urea solution, the animals moved over the surface as if to search for osmotically available water and soon jumped off the surface without initiating WR behavior. Since the skin was the only part of the animal in contact with the surface, it was concluded that receptors in the skin enabled the animals to avoid WR behavior on surfaces where water was not osmotically available. Similarly, toads did not initiate WR behavior when NaCl was used as the solute. These observations suggested that toads have either cutaneous receptors for detecting osmolality, per se, or cutaneous receptors for specific solutes.
脊椎动物味觉受体的细胞生物学。
影响因子：
13.9
作者：
Roper,SD
通讯作者：
Roper,SD