Abstract:
AIM:To study the interactive relationship of gallbladder motor function, plasma cholecystokinin (CCK) and cholecystokinin A receptor (CCK-R) of gallbladder in patients with cholesterol stone disease. METHODS:Gallbladder motility was studied by ultrasonography in 33 patients with gallbladder stone and 10 health subjects as controls. Plasma CCK concentration was measured by radioimmunoassay in fasting status (CCK-f) and in 30 min after lipid test meal (CCK-30). Radioligand method was employed to analyze the amount and activity of CCK-R from 33 gallstone patients having cholecystectomy and 8 persons without gallstone died of severe trauma as controls. RESULTS:The percentage of cholesterol in the gallstone composition was more than 70%. The cholesterol stone type was indicated for the patients with gallbladder stone in this study. Based on the criterion of gallbladder residual fraction of the control group, 33 gallstone patients were divided into two subgroups, contractor group (14 cases) and non-contractor group (19 cases). The concentration of CCK-30 was significantly higher in non-contractor group than that in both contractor group and control group (55.86+/-3.86 pmol/L vs 37.85+/-0.88 pmol/L and 37.95+/-0.74 pmol/L, P<0.01), but there was no difference between contractor group and control group. Meanwhile no significant difference of the concentration of CCK-f could be observed among three groups. The amount of CCK-R was lower in non-contractor group than those in both control group and contractor group (10.27+/-0.94 fmol/mg vs 24.59+/-2.39 fmol/mg and 22.66+/-0.55 fmol/mg, P<0.01). The activity of CCK-R shown as KD in non-contractor group decreased compared to that in control group and contractor group. Only was the activity of CCK-R lower in contractor group than that in control group. The ejection fraction correlated closely with the amount of CCK-R (r = 0.9683, P<0.01), and the concentration of CCK-30 correlated negatively with the amount of CCK-R closely (r = -0.9627, P<0.01). CONCLUSION:The distinctive interactive relationship of gallbladder emptying, plasma CCK and CCK-R in gallbladder from this study suggested that the defect of CCK-R may be a key point leading to the impairment of gallbladder motor function and the pathogenesis of cholesterol gallstone formation may differ in two subgroups of gallstone patient, gallbladder non-contractor group or contractor group.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Zhu J,Han TQ,Chen S,Jiang Y,Zhang SDdoi
10.3748/wjg.v11.i11.1685keywords:
subject
Has Abstractpub_date
2005-03-21 00:00:00pages
1685-9issue
11eissn
1007-9327issn
2219-2840journal_volume
11pub_type
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