Protectin D1

Protectin D1 is a specialized pro-resolving mediator (SPM) synthesized from docosahexaenoic acid (DHA, Cay-90310). DHA is oxidized to 16S,17S-epoxy-protectin, which is converted to protectin D1 enzymatically. Protectin D1 increases phagocytosis of apoptotic polymorphonuclear leukocytes (PMNs) by macrophages in a non-phlogistic manner and is generated in vitro during macrophage-apoptotic interactions. It enhances phagocytosis in mice after 24 hours, but not at the initiation or peak of inflammation. It also decreases PMN infiltration in a zymosan-induced mouse model of inflammation when administered at a dose of 300 ng per animal. Protectin D1 (200 µg, i.v.) inhibits increases in neutrophil counts in bronchoalveolar fluid (BALF) and lung myeloperoxidase activity in a mouse model of pulmonary injury and inflammation induced by intratracheal LPS instillation. It also decreases pulmonary edema and promotes neutrophil apoptosis in BALF.Formal Name: 10R,17S-dihydroxy-4Z,7Z,11E,13E,15Z,19Z-docosahexaenoic acid. CAS Number: 660430-03-5. Synonyms: Neuroprotectin D1, NPD1, PD1. Molecular Formula: C22H32O4. Formula Weight: 360.5. Purity: >98%. Formulation: (Request formulation change), A solution in ethanol. Solubility: DMF: 50 mg/ml, DMSO: 50 mg/ml, Ethanol: 50 mg/ml, PBS (pH 7.2): 0.1 mg/ml. lambdamax: 272, 283 nm. SMILES: CC/C=C\C[C@H](O)/C=C\C=C\C=C\[C@H](O)C/C=C\C/C=C\CCC(O)=O. InChi Code: InChI=1S/C22H32O4/c1-2-3-10-15-20(23)17-12-8-9-13-18-21(24)16-11-6-4-5-7-14-19-22(25)26/h3,5-13,17-18,20-21,23-24H,2,4,14-16,19H2,1H3,(H,25,26)/b7-5-,9-8+,10-3-,11-6-,17-12-,18-13+/t20-,21+/m0/s1. InChi Key: CRDZYJSQHCXHEG-SFVBTVKNSA-N.