적토룡 추출 단백분획의 프로테나제 유도 수용체-2의 활성화 및 혈행개선 효과

• 영문명: Protein Fraction Extracted from the Earthworm Lumbricus rubellus Activates Proteinase Activated Receptor-2 and is Effective on Hemokinesis
• 발행기관: 대한약학회
• 저자명: 이철규(Chul Kyu Lee) 신장식(Jang Sik Shin) 최영근(Young Keun Choi) 임채곤(Chae Kon Lim) 조일환(Il Hwan Cho) 김철(Chul Kim)
• 간행물 정보: 『약학회지』제41권 제2호 (1997년), 247~254쪽, 전체 8쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1997.04.30

영문 초록

The proteinase-activated receptor (PAR-2) belongs to the family of seven transmembrane region receptors, like the thrombin receptor, it is activated by specific proteolytic cleavage of its extracellular amino terminus and a synthetic peptide (SLIGRL). The earthworm protein fraction (EPF) extracted from Lumbricus rubellus elicted dose- and endothelium-dependent relaxations in phenylephrine-contracted rat thoracic aorta, whereas heat inactivated EPF (0.5 micro g/ml) had no effect. In the presence of the nitric oxide synthase inhibitor NG-methyl-L-arginine (1.8 micro M), EPF (0.5 micro g/ml induced relaxations were partially inhibited. Furthermore, EPF (0.5 micro g/ml) dramatically caused relaxation of thrombin-desenstized rat thoracic aorta. These results indicate that EPF activates PAR-2 in vascular endothelial cell. Intravenous injection of EPF (20 mg/kg, bolus) into anesthetized rats produced a marked depressor response. EPF (0 ~ 80 micro g/ml, gradient) was very effective on increasing of perfusion volume in rabbit ear vessel preparations. These results imply the usefulness of EPF as a vascular smooth muscle relaxant and indicate that the activation of PAR-2 may be a mechanism of EPF on hemokinetic improvement.

키워드

Serine Proteinase Blood Vessel Relaxation PAR-2 Peripheral Flow Blood Pressure.