AIM To study the effects of tetrandrine on portal hypertensive gastric mucosal lesions. METHODS Portal hypertensive models were induced in Wistar rats by 60% CCl 4 3ml/kg body weight subcutaneous injection, once e...AIM To study the effects of tetrandrine on portal hypertensive gastric mucosal lesions. METHODS Portal hypertensive models were induced in Wistar rats by 60% CCl 4 3ml/kg body weight subcutaneous injection, once every 4 days for 56 days. The animals were randomly divided into portal hypertension, tetrandrine and propranolol groups and subsequently, treated by physiological saline, tetrandrine and propranolol respectively for 15 days. Some healthy rats were used as normal group. Portal venous pressure (PVP), gastric mucosal prostaglandin E 2 (PGE 2) content, gastric mucosal blood flow (GMBF), gastric adherent mucus (GAM), ALT, ALP and serum total bilirubin (STB), were measured and liver tissues were observed histologically. RESULTS In tetrandrine group and propranolol group, PVP was significantly lower (1 43±0 13, 1 45±0 12 vs 1 89±0 18kPa; P <0 01) and gastric mucosal PGE 2 content (138 59±12 68, 129 98±14 31 vs 104 65±12 97pg/mg; P <0 01), GMBF (11 80±3 47, 10 54±3 63 vs 6 61±2 82ml·h·kg; P <0 05) and GAM (3 01±0 15, 2 98±0 21 vs 2 24mg±0 26mg; P <0 01) was significantly higher than that in portal hypertension control group. In tetrandrine group intrahepatic proliferative fibrous tissues were reduced and serum ALT (47 67±25 90 vs 189 33±41 21 King U; P <0 01), ALP (0 22±0 04 vs 0 31±0 06μmol·s -1 /L; P <0 01) and STB (4 75±0 76 vs 11 12±2 93μmol/L; P <0 01) were lowered as compared with these in portal hypertension control group. ALT (209 34±36 91 vs 189 33±41 21 King U; P >0 05) and STB (11 63±3 01 vs 11 12±2 93μmol/L; P >0 05) in propranolol group were not different from that in portal hypertension controls group, but it showed more marked hepatocellular degeneration and necrosis and elevation of ALP (0 46±0 05 vs 0 31±0 06μmol·s -1 /L; P <0 01). CONCLUSION Tetrandrine can improve the functions of gastric mucosa and liver, and facilitate the absorption of intrahepatic proliferative fibrous tissues. Propranolol can aggravate hepatosis though it may improve portal hypertensive gastric mucosal lesions.展开更多
文摘AIM To study the effects of tetrandrine on portal hypertensive gastric mucosal lesions. METHODS Portal hypertensive models were induced in Wistar rats by 60% CCl 4 3ml/kg body weight subcutaneous injection, once every 4 days for 56 days. The animals were randomly divided into portal hypertension, tetrandrine and propranolol groups and subsequently, treated by physiological saline, tetrandrine and propranolol respectively for 15 days. Some healthy rats were used as normal group. Portal venous pressure (PVP), gastric mucosal prostaglandin E 2 (PGE 2) content, gastric mucosal blood flow (GMBF), gastric adherent mucus (GAM), ALT, ALP and serum total bilirubin (STB), were measured and liver tissues were observed histologically. RESULTS In tetrandrine group and propranolol group, PVP was significantly lower (1 43±0 13, 1 45±0 12 vs 1 89±0 18kPa; P <0 01) and gastric mucosal PGE 2 content (138 59±12 68, 129 98±14 31 vs 104 65±12 97pg/mg; P <0 01), GMBF (11 80±3 47, 10 54±3 63 vs 6 61±2 82ml·h·kg; P <0 05) and GAM (3 01±0 15, 2 98±0 21 vs 2 24mg±0 26mg; P <0 01) was significantly higher than that in portal hypertension control group. In tetrandrine group intrahepatic proliferative fibrous tissues were reduced and serum ALT (47 67±25 90 vs 189 33±41 21 King U; P <0 01), ALP (0 22±0 04 vs 0 31±0 06μmol·s -1 /L; P <0 01) and STB (4 75±0 76 vs 11 12±2 93μmol/L; P <0 01) were lowered as compared with these in portal hypertension control group. ALT (209 34±36 91 vs 189 33±41 21 King U; P >0 05) and STB (11 63±3 01 vs 11 12±2 93μmol/L; P >0 05) in propranolol group were not different from that in portal hypertension controls group, but it showed more marked hepatocellular degeneration and necrosis and elevation of ALP (0 46±0 05 vs 0 31±0 06μmol·s -1 /L; P <0 01). CONCLUSION Tetrandrine can improve the functions of gastric mucosa and liver, and facilitate the absorption of intrahepatic proliferative fibrous tissues. Propranolol can aggravate hepatosis though it may improve portal hypertensive gastric mucosal lesions.