distal convoluted tubule

(redirected from Distal tubules)

distal convoluted tubule

[′dist·əl ‚kän·və′lüd·əd ′tü·byül]
(anatomy)
The portion of the nephron in the vertebrate kidney lying between the loop of Henle and the collecting tubules.
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The new structures contained most of the constituent parts present in human nephrons -- including proximal tubules, distal tubules, Bowman's capsule and Loop of Henle.
Intracellular accumulation Secondary FSGS of MUC1 in distal tubules HNF 1[beta] Clinical findings Diabetes mellitus Pancreatic atrophy Urogenital anomalies Age at presentation Early childhood Laboratory findings Hypomagnesemia Hypokalemia Elevated liver enzyme levels Pathology findings ADTKD, Adult dominant tubulointerstitial kidney disease; UMOD, uromodulin; MUC1, mucin-1; REN, renin; HNF Hepatocyte nuclear factor 1[beta]; FSGS, focal and segmental glomerulosclerosis.
At this regard, it has been reported that adiponectin activates AMP-activated protein kinase (AMPK) in distal tubules and thick ascending limb to phosphorylate and inhibit GS, inhibiting in turn glycogen accumulation [8].
(8,9) Vacuolization is also present in epithelial cells of distal tubules, Henle loops, and collecting ducts.
DDAVP also results in a potent antidiuretic effect through the impairment of free water absorption by the distal tubules, collecting tubules, and collecting ducts by binding to the arginine vasopressin receptor and reducing water permeability [8].
Then, 90% of those were reabsorbed by proximal tubules, henry loop, and early distal tubules and nearly 10% reabsorbed by early collecting ducts and late distal tubular.
Also, histopathological changes in atrophic distal (thin arrow) and proximal (thick arrow) tubular structures are shown with epithelial shedding and loss of brush border of proximal tubules as well as desquamation of tubular epithelium of distal tubules in the medulla.
In the case of kidney tissue, measurements took into account circulatory changes (hemorrhage, edema, and vascular congestion); cortical infiltrates; disorganization of the cortical area and regions of the collecting, proximal, and distal tubules; and destructed epithelial lining of distal convoluted tubules.
Grier and Taylor (1998) created a classification of five classes, such as the ones that were described in this study: regressed (Class I) distribution of abundant spermatogonia cysts in the tubules; early maturation (Class II) beginning of spermatogenesis, cysts in a greater number and sizes; mid maturation (Class III) testis with non-synchronous spermatogenesis, distal tubules with maximum spermatogenic activity and main tubule with greater spermiation; late maturation (Class IV) abundant spermatozoa in the lumen, maximum spermiation activity and reduction of spermatogenesis; regression (Class V) empty tubular lumen and quick regeneration of germinal epithelium.
The metanephrogenic blastema forms glomeruli, proximal tubules, and distal tubules. The ureteric bud divides and branches forming the renal pelvis, infundibulae, calyces, and collecting tubules, which will provide a conduit for urine drainage in the mature kidney.
Brush border of proximal tubules and lumen of distal tubules showed normal structure (Figure, 5).
Renal lesions associated with the use of organic salts of gold to treat rheumatoid arthritis are well documented.12-16 The main sites of deposition of the gold salts are epithelial cells of proximal convulated tubules initially and later on in small amounts in distal tubules, interstitial tissue and glomeruli.