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A family with liddle's syndrome caused by a mutation in the beta subunit of the epithelial sodium channel.

Author(s): Kyuma M, Ura N, Torii T, Takeuchi H, Takizawa H, Kitamura K, Tomita K, Sasaki S, Shimamoto K

Affiliation(s): The Second Department of Internal Medicine, Sapporo Medical University School of Medicine, Japan.

Publication date & source: 2001-08, Clin Exp Hypertens., 23(6):471-8.

Publication type: Case Reports

Liddle's syndrome is a rare form of autosomal-dominant salt-sensitive hypertension. Constitutive activation of the amiloride-sensitive distal renal epithelial sodium channel (ENaC) is essential for salt-sensitive hypertension. Recently, several DNA analysis studies have indicated that there is a mutation of C-terminus of either the beta or y subunit. We sequenced the C-termini of the beta and -gamma subunits of the ENaC in a Japanese family with hypertension and hypopotassemia without excess minerarocorticoids, clinically diagnosed as Liddle's syndrome. The mutation of the ENaC of this family was beta R564X. Since such case seem to be rare in the literature, detailed data are shown in this report.

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