Referenced in: none

Automatically associated channels: Kir1.1 , Kir2.3

Title: Long-term follow-up of patients with Bartter syndrome type I and II.

Authors: Elena Puricelli, Alberto Bettinelli, Nicolò Borsa, Francesca Sironi, Camilla Mattiello, Fabiana Tammaro, Silvana Tedeschi, Mario G Bianchetti,

Journal, date & volume: Nephrol. Dial. Transplant., 2010 Sep , 25, 2976-81

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/20219833

Abstract
Little information is available on a long-term follow-up in Bartter syndrome type I and II.Clinical presentation, treatment and long-term follow-up (5.0-21, median 11 years) were evaluated in 15 Italian patients with homozygous (n = 7) or compound heterozygous (n = 8) mutations in the SLC12A1 (n = 10) or KCNJ1 (n = 5) genes.Thirteen new mutations were identified. The 15 children were born pre-term with a normal for gestational age body weight. Medical treatment at the last follow-up control included supplementation with potassium in 13, non-steroidal anti-inflammatory agents in 12 and gastroprotective drugs in five patients. At last follow-up, body weight and height were within normal ranges in the patients. Glomerular filtration rate was <90 mL/min/1.73 m(2) in four patients (one of them with a pathologically increased urinary protein excretion). In three patients, abdominal ultrasound detected gallstones. The group of patients with antenatal Bartter syndrome had a lower renin ratio (P < 0.05) and a higher standard deviation score (SDS) for height (P < 0.05) than a previously studied group of patients with classical Bartter syndrome.Patients with Bartter syndrome type I and II tend to present a satisfactory prognosis after a median follow-up of more than 10 years. Gallstones might represent a new complication of antenatal Bartter syndrome.