Barter Syndrome classification
- Bartter Syndrome can be classified into four different types based on severity and age of onset.[1]
- Bartter syndrome type 1
- Bartter syndrome type 2
- Bartter syndrome type 3
- Bartter syndrome type 4
- Bartter syndrome types 1, 2, and 4 present at a younger age. They present with symptoms, often quite severe in the neonatal period.
- Bartter Syndrome type 3 also called classic Bartter Syndrome present later in life and maybe sporadically asymptomatic or mildly symptomatic.[1]
- Bartter Syndrome can be classified into five different types based on genotype. Bartter syndrome can result from homozygous or mixed heterozygous mutations in any of the genes. Thus, affecting the function of genes responsible for synthesis or membrane insertion of the transporters in the ascending limb of the loop of Henle.[2][3][4][5][6]
- Bartter Syndrome type 1
- Mutation in NKCC2 gene results in impairment of sodium-potassium-chloride cotransporter (Na-K-2Cl) in the luminal membrane.[2]
- Bartter Syndrome type 2
References
- ↑ 1.0 1.1 Fremont OT, Chan JC (2012). "Understanding Bartter syndrome and Gitelman syndrome". World J Pediatr. 8 (1): 25–30. doi:10.1007/s12519-012-0333-9. PMID 22282380.
- ↑ 2.0 2.1 Simon DB, Karet FE, Hamdan JM, DiPietro A, Sanjad SA, Lifton RP (1996). "Bartter's syndrome, hypokalaemic alkalosis with hypercalciuria, is caused by mutations in the Na-K-2Cl cotransporter NKCC2". Nat Genet. 13 (2): 183–8. doi:10.1038/ng0696-183. PMID 8640224.
- ↑ 3.0 3.1 Simon DB, Karet FE, Rodriguez-Soriano J, Hamdan JH, DiPietro A, Trachtman H; et al. (1996). "Genetic heterogeneity of Bartter's syndrome revealed by mutations in the K+ channel, ROMK". Nat Genet. 14 (2): 152–6. doi:10.1038/ng1096-152. PMID 8841184.
- ↑ 4.0 4.1 Lorenz JN, Baird NR, Judd LM, Noonan WT, Andringa A, Doetschman T; et al. (2002). "Impaired renal NaCl absorption in mice lacking the ROMK potassium channel, a model for type II Bartter's syndrome". J Biol Chem. 277 (40): 37871–80. doi:10.1074/jbc.M205627200. PMID 12122007.
- ↑ Simon DB, Bindra RS, Mansfield TA, Nelson-Williams C, Mendonca E, Stone R; et al. (1997). "Mutations in the chloride channel gene, CLCNKB, cause Bartter's syndrome type III". Nat Genet. 17 (2): 171–8. doi:10.1038/ng1097-171. PMID 9326936.
- ↑ Konrad M, Vollmer M, Lemmink HH, van den Heuvel LP, Jeck N, Vargas-Poussou R; et al. (2000). "Mutations in the chloride channel gene CLCNKB as a cause of classic Bartter syndrome". J Am Soc Nephrol. 11 (8): 1449–59. PMID 10906158.