Anti-inflammatory and anti-nociceptive effects of Zeyheria montana (Bignoniaceae) ethanol extract
Mem. Inst. Oswaldo Cruz
; 103(8): 768-772, Dec. 2008. graf, tab
Article
in English
| LILACS
| ID: lil-502295
Responsible library:
BR1.1
ABSTRACT
In this work, the analgesic and anti-inflammatory activities of Zeyheria montana Mart. ethanol leaf extract were investigated at doses of 75, 150 and 300 mg/kg body weight. In the analgesic assay, against a chemical stimulus in mice, acetic acid-induced writhes were significantly inhibited by the extract at doses of 75 mg/kg (67.27 percent), 150 mg/kg (49.38 percent) and 300 mg/kg (82.87 percent). Also, a vigorous decrease in hyperalgesia was observed when measured after 2 h and 6 h of lipopolysaccharide stimulation of rats for all doses of extract tested. Z. montana extract, at doses of 75 and 300 mg/kg, caused very slight central analgesia in rats submitted to thermal stimulus, particularly noticeable at 30 min following treatment. The anti-inflammatory activity of Z. montana extract on carrageenan-induced oedema in rats was evaluated. The oedema development, measured at 180 min following carrageenan intraplantar injection, was significantly reduced by all tested doses 75 mg/kg (33.30 percent), 150 mg/kg (45.80 percent) and 300 mg/kg (75.00 percent). The LD50 value was greater than 2000 mg/kg. These results demonstrated that the ethanol extract from Z. montana leaf possesses anti-nociceptive and anti-inflammatory activities, which could be of relevance for the pharmacological control of pain and inflammatory processes.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Plant Extracts
/
Bignoniaceae
/
Hyperalgesia
/
Analgesics
/
Anti-Inflammatory Agents
Limits:
Animals
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2008
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de Ribeirão Preto/BR