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DHAP in context of chemotherapy is an acronym for chemotherapy regimen that is used for remission induction in cases of relapsed or refractory non-Hodgkin lymphoma and Hodgkin's lymphoma. [1] It is usually given for 2-3 courses, then followed by high-dose chemotherapy and autologous stem cell transplantation .
Dihydroxyacetone phosphate (DHAP, also glycerone phosphate in older texts) is the anion with the formula HOCH 2 C(O)CH 2 OPO 3 2-. This anion is involved in many metabolic pathways , including the Calvin cycle in plants and glycolysis .
A chemotherapy regimen is a regimen for chemotherapy, defining the drugs to be used, their dosage, the frequency and duration of treatments, and other considerations.In modern oncology, many regimens combine several chemotherapy drugs in combination chemotherapy.
Alkylglycerone phosphate synthase (EC 2.5.1.26, alkyldihydroxyacetonephosphate synthase, alkyldihydroxyacetone phosphate synthetase, alkyl DHAP synthetase, alkyl-DHAP, dihydroxyacetone-phosphate acyltransferase, DHAP-AT) is an enzyme associated with Type 3 Rhizomelic chondrodysplasia punctata. [1] [2] This enzyme catalyses the following ...
Glycerol 3-phosphate is synthesized by reducing dihydroxyacetone phosphate (DHAP), an intermediate in glycolysis. The reduction is catalyzed by glycerol-3-phosphate dehydrogenase. DHAP and thus glycerol 3-phosphate can also be synthesized from amino acids and citric acid cycle intermediates via the glyceroneogenesis pathway. + NAD(P)H + H + → ...
DHA may be prepared, along with glyceraldehyde, by the mild oxidation of glycerol, for example with hydrogen peroxide and a ferrous salt as catalyst.It can also be prepared in high yield and selectivity at room temperature from glycerol using cationic palladium-based catalysts with oxygen, air or benzoquinone acting as co-oxidants.
In the Calvin cycle aldolase also catalyzes the production of sedoheptulose 1,7-bisphosphate from DHAP and erythrose 4-phosphate. The chief products of the Calvin cycle are triose phosphate (TP), which is a mixture of DHAP and G3P, and fructose 6-phosphate. Both are also needed to regenerate RuBP. The aldolase used by plants and algae in the ...
TPI is diffusion-limited. In terms of thermodynamics, DHAP formation is favored 20:1 over GAP production. [8] However, in glycolysis, the use of GAP in the subsequent steps of metabolism drives the reaction toward its production. TPI is inhibited by sulfate, phosphate, and arsenate ions, which bind to the active site. [9]