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Anti-hyperalgesic properties of the extract and of the main sesquiterpene polygodial isolated from the barks of Drymis winteri (Winteraceae). 1998

G L Mendes, and A R Santos, and M M Campos, and K S Tratsk, and R A Yunes, and V Cechinel Filho, and J B Calixto
Department of Pharmacology, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.

This study analyses the anti-hyperalgesic properties of the hydroalcoholic extract (HE) and the sesquiterpene polygodial isolated from the barks of Drymis winteri (Winteraceae). The HE (10 to 60 mg kg(-1), i.p. or 100 to 600 mg kg(-1), p.o.), 4 h prior, produced significant inhibition of abdominal constrictions caused by i.p. injection of acetic acid, kaolin and zymosan in mice. The mean ID50s were: 21.4, 33.7 and 36.6 mg kg(-1); 173.0, 123.0 and 366.0 mg kg(-1), by i.p. and by oral route, respectively. This effect lasted for up to 8 h. The HE at the same range of doses produced dose-related inhibition of both phases of the formalin-induced licking. The calculated mean ID50s values for the early phase were: 26.1 and 43.0 mg kg(-1), while for the late phase they were 7.3 and 72.7 mg kg(-1), respectively, when given by i.p. and by oral route. The HE (10 to 60 mg kg(-1), i.p. or 25 to 200 mg kg(-1), p.o.), 4 h prior, produced significant inhibition of capsaicin-induced neurogenic pain with mean ID50 values of 18.0 and 68.0 mg kg(-1), respectively. The HE (3 to 100 mg kg(-1), p.o., 1 h) inhibited in a graded manner, the hyperalgesia induced by bradykinin (3 nmol/paw) or substance P (10 nmol/paw) in rat paw, with mean ED50 values of 54.5 and 53.7 mg kg(-1), respectively. However, the HE did not affect the hyperalgesia induced by carrageenan or PGE2. When assessed in the hot-plate test, the HE (200 mg kg(-1), p.o.) was inactive. Naloxone (1 mg kg(-1), i.p.) significantly reversed the antinociceptive effects caused by either morphine (5 mg kg(-1), s.c.) or by HE (60 mg kg(-1), i.p.). Polygodial (0.1 to 10 mg kg(-1), i.p.) produced significant inhibition of acetic acid, kaolin and zymosan-induced writhing in mice, being about 14 to 27-fold more potent than the HE at the ID50 level. Together these data provide support for a long-lasting anti-hyperalgesic property for the active principle(s) present in the barks of D. winteri when assessed in several models of inflammatory or neurogenic pain. Its actions involve, at least in part, an interaction with opioid pathway through a naloxone-sensitive mechanism, seeming not to be related with a non-specific peripheral or central depressant actions. Finally, the sesquiterpene polygodial isolated from this plant, appears to be mainly responsible for the anti-hyperalgesic properties of the extract.

UI MeSH Term Description Entries
D008297 Male Males
D009043 Motor Activity Body movements of a human or an animal as a behavioral phenomenon. Activities, Motor,Activity, Motor,Motor Activities
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D010946 Plants, Medicinal Plants whose roots, leaves, seeds, bark, or other constituent parts possess therapeutic, tonic, purgative, curative or other pharmacologic attributes, when administered to man or animals. Herbs, Medicinal,Medicinal Herbs,Healing Plants,Medicinal Plants,Pharmaceutical Plants,Healing Plant,Herb, Medicinal,Medicinal Herb,Medicinal Plant,Pharmaceutical Plant,Plant, Healing,Plant, Medicinal,Plant, Pharmaceutical,Plants, Healing,Plants, Pharmaceutical
D001920 Bradykinin A nonapeptide messenger that is enzymatically produced from KALLIDIN in the blood where it is a potent but short-lived agent of arteriolar dilation and increased capillary permeability. Bradykinin is also released from MAST CELLS during asthma attacks, from gut walls as a gastrointestinal vasodilator, from damaged tissues as a pain signal, and may be a neurotransmitter. Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg,Bradykinin Acetate, (9-D-Arg)-Isomer,Bradykinin Diacetate,Bradykinin Hydrochloride,Bradykinin Triacetate,Bradykinin, (1-D-Arg)-Isomer,Bradykinin, (2-D-Pro)-Isomer,Bradykinin, (2-D-Pro-3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (2-D-Pro-7-D-Pro)-Isomer,Bradykinin, (3-D-Pro)-Isomer,Bradykinin, (3-D-Pro-7-D-Pro)-Isomer,Bradykinin, (5-D-Phe)-Isomer,Bradykinin, (5-D-Phe-8-D-Phe)-Isomer,Bradykinin, (6-D-Ser)-Isomer,Bradykinin, (7-D-Pro)-Isomer,Bradykinin, (8-D-Phe)-Isomer,Bradykinin, (9-D-Arg)-Isomer,Arg Pro Pro Gly Phe Ser Pro Phe Arg
D002211 Capsaicin An alkylamide found in CAPSICUM that acts at TRPV CATION CHANNELS. 8-Methyl-N-Vanillyl-6-Nonenamide,Antiphlogistine Rub A-535 Capsaicin,Axsain,Capsaicine,Capsicum Farmaya,Capsidol,Capsin,Capzasin,Gelcen,Katrum,NGX-4010,Zacin,Zostrix,8 Methyl N Vanillyl 6 Nonenamide,NGX 4010,NGX4010
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005557 Formaldehyde A highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. In solution, it has a wide range of uses: in the manufacture of resins and textiles, as a disinfectant, and as a laboratory fixative or preservative. Formaldehyde solution (formalin) is considered a hazardous compound, and its vapor toxic. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p717) Formalin,Formol,Methanal,Oxomethane
D006930 Hyperalgesia An increased sensation of pain or discomfort produced by minimally noxious stimuli due to damage to soft tissue containing NOCICEPTORS or injury to a peripheral nerve. Hyperalgesia, Tactile,Hyperalgesia, Thermal,Hyperalgia,Hyperalgia, Mechanical,Hyperalgia, Primary,Hyperalgia, Secondary,Allodynia,Allodynia, Mechanical,Allodynia, Tactile,Allodynia, Thermal,Hyperalgesia, Mechanical,Hyperalgesia, Primary,Hyperalgesia, Secondary,Hyperalgesic Sensations,Mechanical Allodynia,Mechanical Hyperalgesia,Tactile Allodynia,Thermal Allodynia,Allodynias,Hyperalgesias,Hyperalgesias, Thermal,Hyperalgesic Sensation,Mechanical Hyperalgia,Mechanical Hyperalgias,Primary Hyperalgia,Primary Hyperalgias,Secondary Hyperalgia,Secondary Hyperalgias,Sensation, Hyperalgesic,Sensations, Hyperalgesic,Thermal Hyperalgesia

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