Sodium reabsorbing epithelia play a major role in whole-body sodium homeostasis.
Some examples of sodium regulating tissues include kidney, colon, lung, and sweat ducts.
Sodium transport across these membranes is a two-step process: entry through an amiloride-sensitive sodium channel and exit via the ouabain-sensitive sodium/potassium ATPase.
The sodium entry channels are the rate-limiting determinant for transport and are regulated by several different hormones.
The sodium channels also play a significant role in a number of disease states, like hypertension, edema, drug-induced hyperkalemia, and cystic fibrosis.
Amiloride-Sensitive Sodium Channels: Physiology and Functional Diversity provides the first in-depth exchange of ideas concerning these sodium channels, their regulation and involvement in normal and pathophysiological situations.
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