title: Antioxidant properties of Aller-7, a novel polyherbal formulation for allergic rhinitis.
abstract: Allergic rhinitis, a frequently occurring immunological disorder affecting men, women and children worldwide, is a state of hypersensitivity that occurs when the body overreacts to a substance such as pollen, mold, mites or dust. Allergic rhinitis exerts inflammatory response and irritation of the nasal mucosal membranes leading to sneezing; stuffy/runny nose; nasal congestion; and itchy, watery and swollen eyes. A novel, safe polyherbal formulation (Aller-7/NR-A2) has been developed for the treatment of allergic rhinitis using a unique combination of extracts from seven medicinal plants including Phyllanthus emblica, Terminalia chebula, Terminalia bellerica, Albizia lebbeck, Piper nigrum, Zingiber officinale and Piper longum. In this study, the antioxidant efficacy of Aller-7 was investigated by various assays including hydroxyl radical scavenging assay, superoxide anion scavenging assay, 1,1-diphenyl-2-picryl hydrazyl (DPPH) and 2,2-azinobis-ethyl-benzothiozoline-sulphonic acid diammonium salt (ABTS) radical scavenging assays. The protective effect of Aller-7 on free radical-induced lysis of red blood cells and inhibition of nitric oxide release by Aller-7 in lipopolysaccharide-stimulated murine macrophages were determined. Aller-7 exhibited concentration-dependent scavenging activities toward biochemically generated hydroxyl radicals (IC50 741.73 microg/ml); superoxide anion (IC50 24.65 microg/ml by phenazine methosulfate-nicotinamide adenine dinucleotide [PMS-NADH] assay and IC50 4.27 microg/ml by riboflavin/nitroblue tetrazolium [NBT] light assay), nitric oxide (IC50 16.34 microg/ml); 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical (IC50 5.62 microg/ml); and 2,2-azinobis-ethyl-benzothiozoline-sulphonic acid diammonium salt (ABTS) radical (IC50 7.35 microg/ml). Aller-7 inhibited free radical-induced hemolysis in the concentration range of 20-80 microg/ml. Aller-7 also significantly inhibited nitric oxide release from lipopolysaccharide-stimulated murine macrophages. These results demonstrate that Aller-7 is a potent scavenger of free radicals and that it may serve.
authors.affiliation: Natural Remedies Research Center, Bangalore, India.
authors.forename: P
authors.initials: P
authors.lastname: D'Souza
authors.forename: A
authors.initials: A
authors.lastname: Amit
authors.forename: V S
authors.initials: VS
authors.lastname: Saxena
authors.forename: D
authors.initials: D
authors.lastname: Bagchi
authors.forename: M
authors.initials: M
authors.lastname: Bagchi
authors.forename: S J
authors.initials: SJ
authors.lastname: Stohs
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism / Q000494:pharmacology / Q000627:therapeutic use*; D052160:Benzothiazoles; D001713:Biphenyl Compounds / Q000378:metabolism / Q000494:pharmacology; D002083:Butylated Hydroxyanisole / Q000378:metabolism / Q000494:pharmacology; D002392:Catechin / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004353:Drug Evaluation, Preclinical; D004912:Erythrocytes / Q000187:drug effects; D005707:Gallic Acid / Q000494:pharmacology; D006461:Hemolysis / Q000187:drug effects; D006801:Humans; D006834:Hydrazines / Q000378:metabolism / Q000494:pharmacology; D017665:Hydroxyl Radical / Q000037:antagonists & inhibitors / Q000138:chemical synthesis; D020128:Inhibitory Concentration 50; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects; D008519:Medicine, Traditional; D051379:Mice; D009569:Nitric Oxide / Q000037:antagonists & inhibitors / Q000138:chemical synthesis; D009580:Nitroblue Tetrazolium; D008517:Phytotherapy; D010851:Picrates; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology / Q000627:therapeutic use*; D010946:Plants, Medicinal / Q000737:chemistry; D012221:Rhinitis, Allergic, Perennial / Q000188:drug therapy* / Q000276:immunology / Q000503:physiopathology; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy* / Q000276:immunology / Q000503:physiopathology; D012256:Riboflavin / Q000737:chemistry; D013451:Sulfonic Acids / Q000378:metabolism / Q000494:pharmacology; D013481:Superoxides / Q000037:antagonists & inhibitors / Q000138:chemical synthesis
chemical_list: C499995:Aller-7 formulation; D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D006834:Hydrazines; D008070:Lipopolysaccharides; D010851:Picrates; D010936:Plant Extracts; D013451:Sulfonic Acids; D013481:Superoxides; D002083:Butylated Hydroxyanisole; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D009580:Nitroblue Tetrazolium; D009569:Nitric Oxide; D017665:Hydroxyl Radical; D005707:Gallic Acid; D002392:Catechin; C004931:1,1-diphenyl-2-picrylhydrazyl; D012256:Riboflavin