Hereditary salt-wasting tubulopathies, a group of autosomal recessive disorders characterized by hypokalemia, hypotension, and alkalosis due to renal wastage of solutes, includes Bartter and Gitelman syndromes.
In 1962, Bartter described a new syndrome characterized by hypokalemia due to renal potassium wastage, alkalosis, elevated plasma aldosterone, and hypertrophy of the juxtaglomerular apparatus. Subsequently hypokalemia associated alkalosis was called Bartter syndrome, but it was not before identifying the molecular background that subtypes, including Gitelman syndrome, could be separated.
The prevalence of hereditary renal salt wasting syndromes is somewhere between 1:50,000 and 1:100,000.
Differential diagnosis includes renal tubular acidosis and familial renal disease mimicking endocrine disorders of salt or water wastage.
Different functional alterations in different solute transporters along the distal nephron are responsible for these disorders.
|Disorders of tubular solute transport|
|Genetic disorders of proximal tubular function|
|Hereditary Salt-wasting tubulopathies|
|Antenatal Bartter syndrome type 1|
|Antenatal Bartter syndrome type 2|
|Classic Bartter syndrome|
|Hypercalciuric hypocalcemia 1|
|Hypercalciuric hypocalcemia 2|
|Infantile Bartter syndrome with deafness type 4|
|Transient antenatal Bartter syndrome|
|Hereditary myokymia type 1|
|Hypomagnesemia with hypercalciuria and nephrocalcinosis|
|Hypomagnesemia with hypercalciuria and nephrocalcinosis with ocular involvement|
|Hypomagnesemia with normocalciuria|
|Intestinal hypomagnesemia with secondary hypocalcemia|
|Isolated dominant hypomagnesemia|
|Renal cysts and diabetes (RCAD)|
|Renal hypomagnesemia 6|
|Inherited disorders of calcium balance|
|Nephrogenic diabetes insipidus|
|Renal tubular acidosis|
BARTTER FC et al. (1962) Hyperplasia of the juxtaglomerular complex with hyperaldosteronism and hypokalemic alkalosis. A new syndrome.[^]
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