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Effects of Lumbricus on the Change of Cerebral Hemodynamics in Rats

  • Journal of Korean Medicine Rehabilitation
  • Abbr : JKMR
  • 2008, 18(1), pp.65-74
  • Publisher : The Korean Academy Of Oriental Rehabilitation Medicine
  • Research Area : Medicine and Pharmacy > Korean Medicine

이정우 1 SONG YUNG SUN 1 Young Dal Kwon 1 Seung-ryong Yeom 1

1원광대학교

Accredited

ABSTRACT

Objectives : This experimental study was designed to investigate the effects of Lumbricus extract (LE) on the changes in regional cerebral blood flow (rCBF) and mean arterial blood pressure (MABP) in normal rats, and further to determine the mechanism of action of LE. Methods : The changes of rCBF were observed by Laser-Doppler flowmetry (LDF) and the changes of MABP were recorded by a data acquisition system assembled with MacLab and Macintosh. Results : LE significantly increased rCBF in a high dosage(10.0 mg/kg, i.p), but MABP was somewhat increased as compared with baseline. This result suggests that LE significantly increased rCBF by dilating pial arterial diameter. Increase of LE-induced rCBF was significantly inhibited by pretreatment with indomethacin (1 mg/kg, i.p.), an inhibitor of cyclooxygenase, but was not significantly inhibited by pretreatment with methylene blue (10 μg/kg, i.p.), an inhibitor of guanylate cyclase. Conclusions : LE increased rCBF by dilating pial arterial diameter, and the action of this response was mediated by cyclooxygenase

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