The three types of pseudohypoaldosteronisma
Type | Inheritance | Clinical and Biochemical Characteristics | Molecular Pathology | OMIM |
---|---|---|---|---|
a AR, autosomal recessive; AD, autosomal dominant; PAC, plasma aldosterone concentration; PRA, plasma renin activity. | ||||
b Gordon syndrome or familial hyperkaliemic hypertension. | ||||
c Transient PHA. | ||||
I | AR | Renal: salt wasting, hyponatremia, hyperkalemia, metabolic acidosis elevated PAC and PRA, treatment by salt supplementation for life | Mutations on the three genes coding for the epithelial sodium channel | 264350 |
Lung: chest congestion, cough and tachypnea | ||||
Na+ and Cl− elevated in sweat, saliva, and stool | ||||
AD | Renal: salt wasting, hyponatremia, hyperkalemia, metabolic acidosis, elevated PAC and PRA, treatment by salt supplementation | Mutations on the gene coding for the mineralocorticoid receptor | 177735 | |
Spontaneous remission over time. | ||||
IIb | AD | Hyperkalemia, hypertension, hyperchloremic acidosis, normal PAC, low PRA, treatment by thiazide diuretics | At least three subtypes: | |
subtype a: associated with locus on chromosome 1q31–q42 (gene unknown) | 145260 | |||
subtype b: mutations on the gene coding for WNK4 | 601844 | |||
subtype c: mutations on the gene coding for WNK1 | 605232 | |||
IIIc | No | Hyperkalemia, acidosis, elevated PAC and PRA, low glomerular filtration rate. | Secondary to: | |
excessive salt loss: intestine, sweat | ||||
nephropathies: obstructive uropathy, sickle cell and lead nephropathy, amyloidosis, urinary tract infections. |