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A Case of Congenital Partial Nephrogenic Diabetes Insipidus

Journal of the Korean Pediatric Society 2002;45(7):902-905.
Published online July 15, 2002.
A Case of Congenital Partial Nephrogenic Diabetes Insipidus
Eun Ha Mo, In Hye Nam, Min Ja Chung, Jae Hong Yu
Department of Pediatrics, College of Medicine, Chungnam National University, Daejon, Korea
선천성 부분 신성 요붕증 1례
모은하, 남인혜, 정민자, 유재홍
충남대학교 의과대학 소아과학교실
Jae Hong Yu, Email: jhongyu@cuvic.cnu.ac.kr
The most common form of genetic nephrogenic diabetes insipidus(NDI), a rare inherited disorder, is congenital and is transmitted in an X-linked recessive mode. It is refractory to the antidiuretic effect of normal to moderately increased levels of plasma arginine vasopressin(AVP) but, in some cases, may respond to high levels of the hormone or its analogue, deamino-D-arginine vasopressin(DDAVP). X-linked congenital NDI has now been linked to over 128 different mutations in diverse coding regions of the AVP receptor 2(AVPR2) gene. The functional effects of these mutations vary from complete loss of responsiveness to a simple shift to the right in the dose response curve. We report a case of congenital partial NDI, with transversion of A to G at codon 280 of the AVPR2 gene, resulting in a subsequent change of amino acid from tyrosine to cysteine, and that has been effective with hydrochlorothiazide and high dose of DDAVP.
Key Words: Arginine vasopressin receptor 2 gene, Mutation, Congenital partial nephrogenic diabetes insipidus

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