ABSTRACT
AIM: To investigate the expression of neurok inin-2 receptor (NK-2R) in normal pancreas and chronic pancreatitis (CP) tissues. The relation of expres sion of NK-2R with pain in CP was also evaluated. METHODS: CP tis sues were ob tained from 18 men and 7 women undergoing pancreatic head resection as a result of CP. Normal human pancreatic tissues were obtained from 20 patients (11 males/ 9 females). Real-time quantitative reverse transcription polymerase chain reacti on was used to determine the mRNA expression of NK-2R, Western blot analysis was used to determine its protein expression level, and immunohistochemistry was us ed to localize expression site of NK-2R protein. NK-2R mRNA level and pain were also analysed whether correlation exists. RESULTS: NK-2R mRNA and p rotein level were enhanced expressed in CP tissue samples compared with normal pancreas. Ove rexpression of NK-2R was related to the intensity ( r=0 59, P
ABSTRACT
AIM: To study the expression and the role of neurokinin-1 receptor(NK-1R) and neurokinin-2 receptor (NK-2R) in distal ileum during acute necrotizing pancreatitis(ANP).METHODS: 130 adult Sprague-Dawley rats were divided into 2 groups: the rats in ANP group( n=80 ) were induced by the retrograde intraductal infusion of 5% sodium taurocholate. The rats in sham operation control group ( n=50 ) received laparotomy only. Reverse transcription polymerase chain reaction (RT-PCR) was used to determine the mRNA expression of NK-1R and NK-2R, Western blot was used to investigate expression level of NK-1R.RESULTS: NK-1R and NK-2R mRNA levels were enhanced in the distal ileum of ANP rats compared with controls. Western blot revealed stronger NK-1R immunoreactivity exited in intestinal mucosa in ANP rats. The overexpression of NK-1R was associated with mucosal pathological score( r=0.77,P