title: Inhibition of respiratory burst in human neutrophils and lipoxygenase enzyme by compounds from Haloxylon griffithii.
abstract: Secondary metabolites, ferulic acid (1), 2,6-dimethoxy-4-hydroxy acetophenone (2), herniarin (3), p-hydroxy acetophenone (4), methyl 3,4-dihydroxycinnamate (5), and methyl 4-hydroxy-3-methoxycinnamate (6) were isolated from Haloxylon griffithii, a member of the family Chenopodiaceae. The structures of compounds 1-6 were identified with the help of spectroscopic techniques. These compounds were isolated for the first time from this plant. The lipoxygenase and respiratory burst inhibitory activities were determined. Compound 5 was found to be the most potent inhibitory activity against respiratory burst in human neutrophils among all the compounds as well as exhibited moderate lipoxygenase inhibitory activity from this plant.
authors.affiliation: H. E. J. Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi-75270 Pakistan. hej@cyber.net.pk
authors.forename: Muhammad Iqbal
authors.initials: MI
authors.lastname: Choudhary
authors.forename: Saima
authors.initials: S
authors.lastname: Jalil
authors.forename: Muddasir
authors.initials: M
authors.lastname: Israr
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D002478:Cells, Cultured; D019663:Chenopodiaceae / Q000737:chemistry*; D006801:Humans; D016859:Lipoxygenase Inhibitors / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D009504:Neutrophils / Q000187:drug effects* / Q000502:physiology; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D016897:Respiratory Burst / Q000187:drug effects*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D016859:Lipoxygenase Inhibitors; D010936:Plant Extracts