Research on the Plasma Endothelin and Gastric Mucusal Pathology in Obstructive Jaundice / 中国普外基础与临床杂志

ABSTRACT

Objective To investigate the correla tion between the plasma endothelin (ET) and gastric mucosal pathology.Methods In this experiment,seven dogs who exper ienced common bile-duct ligation were in experiment group, the other three dogs who underwent sham-operation were control group. By using specific radio immun ological method, the plasma ET levels were determined in dogs before and after 1 ,4,7 d. The total bilirubin levels were determined before and after 1,4,7 d afte r operation by using carbazotic acid method.The gastric mucosa,7 d after operati on, was cut into slices and was examined under the electron microscope and the l ight microscope.Results In the experiment group,the levels of ET and total bilirubin rose continually and were higher than those in control gr oup. Vascular congestion and oedema were seen in gastric mucosa of common bile- duct ligated dogs. Under the electron microscope, we could see the dilated bloo d capillary and sludging of blood,the intenstitial mucusa cells oedema. Conclusion The increase of plasma ET might lea d to impairment of mucosal micro-circulation,which might be one of the pathogen s that could induce the gastric mucosal damages in common bile-duct ligated dog s.