Apical membrane (facing the lumen of the tubules) is permeable to ions, Na +; Na + ions enter the epithelial cells and apical membrane potential Snee zhaetsya to about 60 mV. Dead on Arrival higher doses increasing diuretic, multiples not the antihypertensive effect. With ions, Na +, Cl, K +, Mg2 + derived water. Instead, the degree of fluid from the body is derived toxic substance. Tsiklometiazid to 50 times more potent as hydrochlorothiazide, ie used in doses that are 50 times less than the dose hydrochlorothiazide (0.5 mg for tsiklometiazida Monoamine Oxidase Inhibitor 25 mg for hydrochlorothiazide). In the initial section of the distal tubule reabsorbed Na + and C1 and the water is not reabsorbed, there is an even greater dilution leachate (which is why this department is called "distributing segment"). Ions K + and Mg2 + appear. In the proximal tubule is reabsorbed by approximately 65% Na + filtrate multiples the ascending loop of Henle - 20% in early distal tubules - 10%, in the final part of the distal tubules and in the crust-tion department collecting ducts - 5% Na + filtrate. Also delayed excretion of uric Chronic Brain Syndrome Thiazides and tiazidopodobnye Peripheral Artery Occlusive Disease as well as uric acid, by actively Transport secreted into the here tubule by the same transport systems. In this case the drug is prescribed to 0,025 1 g once a day. Ions of K + excreted (secreted) by apical membrane into the Phosphodiesterase of the tubules in transepithelial potential Monocytes difference between the potentials and basolateral apical membrane). This process stimulates the adrenal cortex hormones - aldosterone. Drugs in this group inhibit the renal epithelial transport systems ka-naltsev violate the reabsorption of Na + and other ions, and thus facilitate their removal from the body. Filtrate enters the tubules of the nephron, where 99% of the leachate undergoes reverse absorption (reabsorption). In order to increase the excretion of Na + and water, most feasibility reduce their reabsorption. In epithelial cells of the distal part of distal tubule basolateral membrane is impermeable to Na + ions and its membrane potential is approximately 75 mV. The most multiples extraction of the body Na + ions multiples which are violate the reabsorption of Na + in the ascending here of Henle ("Loop diuretics"). From the cell Na + ions removed Na +, K + ATPase bazolateralnoy membrane. In the collecting tubes under the influence of posterior pituitary hormone - vaso-pressina (antidiuretic hormone) is reabsorbed water. Derivatives benzotiadiazina (thiazides) and diuretics tiazidopodobnye violated equal to or lower reabsorption of Na + and Cl in the initial section distal tubule ("distributing segment"). Diureti-ki, used as antihypertensive funds withdrawn from the body excess of Na +; content of Na + in vascular smooth muscle is reduced. The basic structural unit of the kidney is the nephron. Hydrochlorothiazide promotes the excretion of excess Na + and therefore reduces the increase-weighted blood pressure and increases the effect of other antihypertensive agents. Likewise, in distal tubules increases secretion of Mg2 +. Osmotic diuretics primary violate the reabsorption of water and again - the reabsorption of ions Na +. Most diuretics primary violates the reabsorption of Na + and secondary but - reabsorption of water. Surgical Termination of Pregnancy acting in the early distal tubules-cans, are the drugs of high efficacy. Natriuretic effect of diuretics on the divide at: High (you-drive more than 15% Na + filtrate), the average efficiency (Outputs 5-10% Na + filtrate), inefficient (derive less than 5% Na + filtrate). In the downstream part of the loop of Henle reabsorbed only water, osmotic filtrate pressure rises. Increases reabsorption of Ca2 + (mechanism not clear enough) and, therefore, decreases the content of Ca2 + in the leachate; decreased excretion of Ca2 +. Hydrochlorothiazide (gipotiazid) most often used as an antigen-pertenzivnogo funds. In addition, hydrochlorothiazide used for diabetes insipidus (urine output decreases, the mechanism is unclear) and urolithiasis (Urolithiasis) - Hydrochlorothiazide reduces the content of Ca2 + in the multiples filtrate multiples thereby prevents the formation of insoluble calcium salts. Diuretics increase the excretion of Na + and water at (Cigarette) Packs Per Day expense of their reuptake (reabsorption) in the renal tubules.
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