<prompt> Aquaporin deficiency cause?Nephrogenic diabetes insipidusLiddle syndromeBaer syndromeGitelman syndrome  <response>: 1. Nephrogenic diabetes insipidus: Aquaporin 2 gene mutation impede the normal functionality of the kidney water channel, which results in the kidney being unable to absorb water. Autosomal recessivemanner. 2. Liddle syndrome: Gain of function of epithelial Na channel ENaC 3. Bater syndrome:- Defect in Na-K-2Cl cotranspoer, Cl channel ROMK in loop of Henle. 4. Gitelman syndrome: Defect in Na-Cl- cotranspoer and TRPM6 transpoer in DCT. 