Role of endothelin in obstructive jaundice


Sarac A., Aktan A., Moini H., Bilsel S., Scapa E.

DIGESTIVE DISEASES AND SCIENCES, cilt.44, ss.356-363, 1999 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 44 Konu: 2
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1023/a:1026614803584
  • Dergi Adı: DIGESTIVE DISEASES AND SCIENCES
  • Sayfa Sayıları: ss.356-363

Özet

Mediators responsible for renal changes in obstructive jaundice are not specified. This study is designed to study the role of endothelin-1 (ET-1) in obstructive jaundice in rats. Animals were randomly placed into five experimental groups. Group 1 (N = 3) was the sham-operated group. Group 2 (N = 8) after common bile duct (CBD) ligation, received bosentan, which is a nonselective endothelin receptor blocker, 50 mg/kg/day for seven days. Group 3 (N = 7) received 1 mu g/kg/day captopril. Group 4 (N = 7) was given both drugs orally for seven days. Group 5 (N = 6) after CBD ligation, received Arabic gum as the vehicle. Blood was drawn from the infrahepatic vena cava for the determination of ET-1, bilirubin, creatinine, protein oxidation products, hyaluronic acid, and beta-N-acetyl-hexosaminase. Liver tissue samples were obtained to determine glutathione levels. ET-1, protein oxidation products, hyaluronic acid, bilirubin, and creatinine levels increased significantly in the control group when compared with sham. Bosentan effectively prevented ET-1 elevation but could not reverse creatinine or bilirubin elevation. Captopril with or without bosentan was cytoprotective but did not reverse increased creatinine levels. It is concluded that increased ET-1 in obstructive jaundice may be one of the contributing factors of renal damage.