Search results for "Picrorhiza"

showing 3 items of 3 documents

Antiasthmatic Effects of <i>Picrorhiza kurroa</i>: Androsin Prevents Allergen- and PAF-induced Bronchial Obstruction in Guinea Pigs

1991

In the Ayurvedic medicine, <i>Picrorhiza kurroa </i>Royle ex Benth. is used for the treatment of liver and lung diseases. Using different chemical and pharmacological methods, we could identify the phenol glycoside androsin as active compound preventing allergen and platelet-activating factor induced bronchial obstruction in guinea pigs in vivo (10 mg/kg p.o.; 1 h prior to the inhalation challenge). Histamine release from human polymorphonuclear leukocytes in vitro was inhibited by other compounds yet to be identified.

LungInhalationPlatelet-activating factorTraditional medicinebusiness.industryPicrorhiza kurroaImmunologyGeneral Medicinemedicine.disease_causeGuinea pigchemistry.chemical_compoundmedicine.anatomical_structureAllergenchemistryIn vivoImmunologymedicineImmunology and AllergybusinessHistamineInternational Archives of Allergy and Immunology
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Antiasthmatic acetophenones - an in vivo study on structure activity relationship.

1994

The recently isolated acetophenone glucoside androsin, as the major antiasthmatic principle of Picrorhiza kurroa Royle ex Benth. (Scrophulariaceae), was used as a lead compound for detailed structure-activity relationship studies. More than 25 synthesized or commercially available acetophenones with modified substitution patterns were screened in the Plethysmographic guinea pig model using PAF and/or ovalbumin as challenging agents for the generation of bronchial constriction. Whereas the aglycones in most cases were more effective than the corresponding glycosides, substitution patterns in position 3 and 4 of the phenyl ring and the keto function attached to the phenyl ring were found to b…

Pharmacologychemistry.chemical_classificationStereochemistryPicrorhiza kurroaPharmaceutical ScienceGlycosideIn vitrochemistry.chemical_compoundComplementary and alternative medicinechemistryGlucosideIn vivoDrug DiscoveryMolecular MedicineStructure–activity relationshipLead compoundAcetophenonePhytomedicine : international journal of phytotherapy and phytopharmacology
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Protective effect of apocynin in a mouse model of chemically-induced colitis.

2013

Apocynin, a constituent of Picrorhiza kurroa, successfully inhibits NADPH oxidase and shows promise as an anti-inflammatory drug. Now, we report anti-inflammatory effects of apocynin in an experimental colitis model induced by dextran sulfate sodium as well as the effects on the mediators involved in this process. Apocynin reduced the colitis induced in mice by administration of 5 % dextran sulfate sodium during 7 days. Mice were fed a control diet or a diet supplemented with 2 % of apocynin or 2 % of rutin. Sulfasalazine (50 mg/kg, p. o.) was used as a positive control. Treatment with apocynin and rutin ameliorated the course of colonic inflammation with results similar to those of the ref…

Picrorhiza kurroaRutinAnti-Inflammatory AgentsPharmaceutical ScienceNitric Oxide Synthase Type IIPharmacologyInflammatory bowel diseaseAnalytical Chemistrychemistry.chemical_compoundRutinMiceDrug DiscoveryPicrorhizaNADPH oxidasebiologyDextran SulfateColitisBiochemistrycardiovascular systemMolecular Medicinecirculatory and respiratory physiologymedicine.druginorganic chemicalsSTAT3 Transcription FactorColonNitric OxideDinoprostoneNitric oxideSulfasalazinemedicineAnimalscardiovascular diseasesColitisPharmacologyCyclooxygenase 2 Inhibitorsbusiness.industryPlant ExtractsOrganic ChemistryTranscription Factor RelAAcetophenonesmedicine.diseaseSulfasalazineDisease Models AnimalchemistryComplementary and alternative medicineCyclooxygenase 2Apocyninbiology.proteinbusinessPhytotherapyPlanta medica
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