Effects of essential oil of Alpinia zerumbet on the compound action potential of the rat sciatic nerve.
Phytomedicine
; 11(6): 549-53, 2004 Sep.
Article
em En
| MEDLINE
| ID: mdl-15500268
Alpinia zerumbet, known popularly as "colônia" in Northeastern Brazil, is a medicinal plant that has been used widely in folk medicine as teas and infusions for the treatment of intestinal and cardiovascular diseases, including arterial hypertension. Our previous studies have demonstrated that the essential oil of A. zerumbet (OEAZ) is very active on excitable tissues, such as smooth muscle, and in this study we verified its effects on the compound action potential (CAP) of rat sciatic nerve. EOAZ induced a dose-dependent blockade of the CAP. Control peak-to-peak amplitude and conduction velocity of CAPs were 7.6 +/- 0.43 mV and 80.6 +/- 3.19 m/s, respectively. At 60 microg/ml, EOAZ induced no demonstrable effect. Conduction velocity was significantly reduced at 180 min of preparation exposure to 100 microg/ml of EOAZ. At 300, 600 and 2000 microg/ml doses of EOAZ, the peak-to-peak amplitudes of CAPs following 180 min exposure of the nerve to the drug were reduced significantly, to 75.3 +/- 7.36%, 50.45 +/- 2.17% and 0% respectively, of control value. Conduction velocity was reduced significantly by 300, 600 and 2000 microg/ml of EOAZ, at 180 min, to 83.61 +/- 3.28%, 64.06 +/- 8.21% and 22.7 +/- 5.79%, respectively, of control value. All these effects developed slowly and were reversible upon a 180-min wash.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Nervo Isquiático
/
Óleos de Plantas
/
Alpinia
/
Fitoterapia
Limite:
Animals
Idioma:
En
Revista:
Phytomedicine
Assunto da revista:
TERAPIAS COMPLEMENTARES
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Alemanha