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Renal tubular acidosis (RTA) is a medical condition that involves an accumulation of acid in the body due to a failure of the kidneys to appropriately acidify the urine. [1] In renal physiology, when blood is filtered by the kidney, the filtrate passes through the tubules of the nephron, allowing for exchange of salts, acid equivalents, and other solutes before it drains into the bladder as urine.
Proximal renal tubular acidosis (pRTA) or type 2 renal tubular acidosis (RTA) is a type of RTA caused by a failure of the proximal tubular cells to reabsorb filtered bicarbonate from the urine, leading to urinary bicarbonate wasting and subsequent acidemia. The distal intercalated cells function normally, so the acidemia is less severe than ...
The authors felt neither pituitary nor adrenal insufficiency was involved, but that direct neural control of renal proximal tubular reabsorption of sodium was disrupted. [25] In 1953, Leaf et al, demonstrated that exogenous administration of the antidiuretic hormone vasopressin resulted in hyponatremia and a natriuresis dependent on water ...
Fanconi syndrome or Fanconi's syndrome (English: / f ɑː n ˈ k oʊ n i /, / f æ n-/) is a syndrome of inadequate reabsorption in the proximal renal tubules [1] of the kidney.The syndrome can be caused by various underlying congenital or acquired diseases, by toxicity (for example, from toxic heavy metals), or by adverse drug reactions. [2]
Cases of recurrent kidney stone formation may warrant evaluation for possible underlying metabolic abnormalities. [8] In patients with low levels of citrate in the urine (hypocitraturia) and incomplete distal renal tubular acidosis, treatment with potassium citrate helps prevent the formation of new kidney stones. [8]
Gitelman syndrome; Other names: Primary renal tubular hypokalemic hypomagnesemia with hypocalciuria: A model of transport mechanisms in the distal convoluted tubule.Sodium chloride (NaCl) enters the cell via the apical thiazide-sensitive NCC and leaves the cell through the basolateral Cl − channel (ClC-Kb), and the Na + /K +-ATPase.
Distal renal tubular acidosis (dRTA) is the classical form of RTA, being the first described. Distal RTA is characterized by a failure of acid secretion by the alpha intercalated cells of the distal tubule and cortical collecting duct of the distal nephron . [ 1 ]
Nephrocalcinosis, renal failure, ocular/hearing defects, polyruria, polydipsia, recurrent urinary tract infections, recurrent renal colic, normotensive Plasma: ↓Mg, ↑PTH; Urine: ↑Ca, ↑Mg Distal Tubule / Collecting Duct