title: Immunopharmacological studies on Picrorhiza kurroa Royle ex Benth. Part VI: Effect on anaphylactic activation events in rat peritoneal mast cells.
abstract: Mechanism of inhibition of mast cell anaphylaxis by P. kurroa-extract (PK) treatment in rats was investigated. Mast cell-IgE binding, assessed from induction of passive sensitization, was not affected. Calcium-independent early activation events in mast cell anaphylaxis indicated on inhibitory influence of PK-treatment. Inhibition of membrane-protease release by PK-treatment was suggested by study of gastric secretion and exhibition of saturable synergism with Di-isopropyl fluoro phosphate on inhibition of anaphylactic degranulation. pH-independence of mast cell stabilizing effect negates any PK-influence on phospholipid transmethylation. The results complement findings of earlier studies on indirect effects of PK through alteration of membrane structure/function.
authors.affiliation: Department of Pharmacology, Banaras Hindu University, Varanasi.
authors.forename: B L
authors.initials: BL
authors.lastname: Pandey
authors.forename: P K
authors.initials: PK
authors.lastname: Das
authors.forename: S S
authors.initials: SS
authors.lastname: Gambhir
mesh_terms: D000707:Anaphylaxis / Q000276:immunology*; D000818:Animals; D000941:Antigens / Q000276:immunology; D005750:Gastric Juice / Q000187:drug effects / Q000201:enzymology; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D007531:Isoflurophate / Q000494:pharmacology; D008297:Male; D008407:Mast Cells / Q000187:drug effects / Q000276:immunology*; D010447:Peptide Hydrolases / Q000032:analysis; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D000941:Antigens; D010936:Plant Extracts; D007531:Isoflurophate; D010447:Peptide Hydrolases