Repositioning Candidate Details

Candidate ID: R0276
Source ID: DB00774
Source Type: approved; investigational; withdrawn
Compound Type: small molecule
Compound Name: Hydroflumethiazide
Synonyms: Dihydroflumethazide; Hydroflumethiazide; Idroflumetiazide; Metforylthiadiazin
Molecular Formula: C8H8F3N3O4S2
SMILES: NS(=O)(=O)C1=CC2=C(NCNS2(=O)=O)C=C1C(F)(F)F
Structure:
DrugBank Description: A thiazide diuretic with actions and uses similar to those of hydrochlorothiazide. (From Martindale, The Extra Pharmacopoeia, 30th ed, p822)
CAS Number: 135-09-1
Molecular Weight: 331.292
DrugBank Indication: Used as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. Also used in the management of hypertension either as the sole therapeutic agent or to enhance the effect of other antihypertensive drugs in the more severe forms of hypertension.
DrugBank Pharmacology: Hydroflumethiazide is an oral thiazide used to treat hypertension and edema. High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. High blood pressure may also increase the risk of heart attacks. Like other thiazides, Hydroflumethiazide promotes water loss from the body (diuretics). Thiazides 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.
DrugBank MoA: Hydroflumethiazide is a thiazide diuretic that inhibits water reabsorption in the nephron by inhibiting the sodium-chloride symporter (SLC12A3) in the distal convoluted tubule, which is responsible for 5% of total sodium reabsorption. Normally, the sodium-chloride symporter transports sodium and chloride from the lumen into the epithelial cell lining the distal convoluted tubule. The energy for this is provided by a sodium gradient established by sodium-potassium ATPases on the basolateral membrane. Once sodium has entered the cell, it is transported out into the basolateral interstitium via the sodium-potassium ATPase, causing an increase in the osmolarity of the interstitium, thereby establishing an osmotic gradient for water reabsorption. By blocking the sodium-chloride symporter, Hydroflumethiazide effectively reduces the osmotic gradient and water reabsorption throughout the nephron.
Targets: Carbonic anhydrase 7 inhibitor; Carbonic anhydrase 9 inhibitor; Solute carrier family 12 member 1 inhibitor; Sodium/potassium-transporting ATPase subunit alpha-1 inducer; Calcium-activated potassium channel subunit alpha-1 inducer; Carbonic anhydrase 1 inhibitor; Carbonic anhydrase 2 inhibitor; Carbonic anhydrase 4 inhibitor; Carbonic anhydrase 12 inhibitor
Inclusion Criteria: Indication associated