An Information Portal to 112722 Biological Macromolecular Structures

TRU is found in 2 entries
  •   Chemical Component Summary   Hide
    Identifiers (3R)-6-chloro-3-(dichloromethyl)-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide
    Formula C8 H8 Cl3 N3 O4 S2
    Molecular Weight 380.66 g/mol
    Type non-polymer
    Isomeric SMILES
  •   Drug Info: DrugBank Hide
    DrugBank ID DB01021   (Different stereochemistry)
    Name Trichlormethiazide
    Groups approved
    Description A thiazide diuretic with properties similar to those of hydrochlorothiazide. (From Martindale, The Extra Pharmacopoeia, 30th ed, p830)
    Synonyms Naqua
    Brand names
    • Anistadin
    • Carvacron
    • Diu-Hydrin
    • Diurese
    • Fluitran
    • Kubacron
    • Metahydrin
    • Naqua
    Affected organism Humans and other mammals
    Indication Used in the treatment of oedema (including that associated with heart failure) and hypertension.
    Pharmacology Trichloromethiazide is indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. Trichloromethiazide has also been found useful in edema due to various forms of renal dysfunction such as nephrotic syndrome, acute glomer-ulonephritis, and chronic renal failure. Trichloromethiazide is also indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension. Like other thiazides, Trichloromethiazide promotes water loss from the body (diuretics). They inhibit Na+/Cl- reabsorption from the distal convoluted tubules in the kidneys. Thiazides also cause loss of potassium and an increase in serum uric acid. Thiazides are often used to treat hypertension, but their hypotensive effects are not necessarily due to their diuretic activity. Thiazides have been shown to prevent hypertension-related morbidity and mortality although the mechanism is not fully understood. Thiazides cause vasodilation by activating calcium-activated potassium channels (large conductance) in vascular smooth muscles and inhibiting various carbonic anhydrases in vascular tissue.
    Mechanism of action Trichlormethiazide appears to block the active reabsorption of chloride and possibly sodium in the ascending loop of Henle, altering electrolyte transfer in the proximal tubule. This results in excretion of sodium, chloride, and water and, hence, diuresis. As a diuretic, Trichloromethiazide inhibits active chloride reabsorption at the early distal tubule via the Na-Cl cotransporter, resulting in an increase in the excretion of sodium, chloride, and water. Thiazides like Trichloromethiazide also inhibit sodium ion transport across the renal tubular epithelium through binding to the thiazide sensitive sodium-chloride transporter. This results in an increase in potassium excretion via the sodium-potassium exchange mechanism. The antihypertensive mechanism of Trichloromethiazide is less well understood although it may be mediated through its action on carbonic anhydrases in the smooth muscle or through its action on the large-conductance calcium-activated potassium (KCa) channel, also found in the smooth muscle.
    • Antihypertensive Agents
    • Diuretics
    • Sodium Chloride Symporter Inhibitors
    ATC-Code C03AA06
    CAS number 133-67-5
    Name Sequence search Pharmacological action Actions
    Carbonic anhydrase 1   Search  unknown inhibitor
    Carbonic anhydrase 2   Search  unknown inhibitor
    Solute carrier family 12 member 1   Search  yes inhibitor
    Carbonic anhydrase 4   Search  unknown inhibitor
    Sodium/potassium-transporting ATPase subunit alpha-1   Search  yes inhibitor
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