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Qu'est-ce (qui) est pyrophosphate$65894$ - définition
CHEMICAL COMPOUND
Sodium Acid Pyrophosphate; Sodium acid pyrophosphate; Disodium dihydrogen pyrophosphate; Disodium diphosphate; E450i
.jpg?width=200 "Disodium pyrophosphate in baking powder, New Zealand, 1950s")
Calcium pyrophosphate dihydrate crystal deposition disease
![condenser]].](https://commons.wikimedia.org/wiki/Special:FilePath/Calcium pyrophosphate dihydrate crystals without and with condenser, annotated.jpg?width=200 "condenser]].")
![X-ray]] of a knee with [[chondrocalcinosis]].](https://commons.wikimedia.org/wiki/Special:FilePath/Chondrocalcinosis - annotated.jpg?width=200 "X-ray]] of a knee with [[chondrocalcinosis]].")
.png?width=200 "Artistic depiction of pseudogout crystals (calcium pyrophosphate dihydrate crystals)")
DISEASE
Pseudogout; Calcium pyrophosphate dihydrate deposition disease; CPPD; Calcium pyrophosphate deposition disease; Chondrocalcinosis familial articular; Familial chondrocalcinosis; Pyrophosphate arthropathy; Chondrocalcinosis with early-onset osteoarthritis; Chondrocalcinosis-1; Chondrocalcinosis-2; Familial articular chondrocalcinosis; Calcium gout; Calcium pyrophosphate arthropathy; Pyrophosphate deposition disease; Calcium pyrophosphate dihydrate disease
Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease, also known as pseudogout and pyrophosphate arthropathy, is a rheumatologic disease which is thought to be secondary to abnormal accumulation of calcium pyrophosphate dihydrate crystals within joint soft tissues. The knee joint is most commonly affected.
Pyrophosphate
SALT OR ESTER OF DIPHOSPHORIC ACID
Pyrophosphoralysis; PPi; Pyrophosphorolysis; Diphosphate; Pyrophosphate ion; P2O7; Potassium disphosphate; E450 (food additive)
·noun A salt of pyrophosphoric acid.
Diacylglycerol diphosphate phosphatase
CLASS OF ENZYMES
EC 3.1.3.81; DGPP phosphatase; DGPP phosphohydrolase; DPPL1; DPPL2; Pyrophosphate phosphatase; 1,2-diacyl-sn-glycerol 3-phosphate phosphohydrolase
Diacylglycerol diphosphate phosphatase (, DGPP phosphatase, DGPP phosphohydrolase, DPP1, DPPL1, DPPL2, PAP2, pyrophosphate phosphatase) is an enzyme with systematic name 1,2-diacyl-sn-glycerol 3-phosphate phosphohydrolase. This enzyme catalyses the following chemical reaction
Wikipédia
Disodium pyrophosphate
Disodium pyrophosphate or sodium acid pyrophosphate (SAPP) is an inorganic compound consisting of sodium cations and pyrophosphate anion. It is a white, water-soluble solid that serves as a buffering and chelating agent, with many applications in the food industry. When crystallized from water, it forms a hexahydrate, but it dehydrates above room temperature. Pyrophosphate is a polyvalent anion with a high affinity for polyvalent cations, e.g. Ca2+.
Disodium pyrophosphate is produced by heating sodium dihydrogen phosphate:
- 2 NaH2PO4 → Na2H2P2O7 + H2O
