The study between the dynamics and the X-ray anatomy and regularizing effect of gallbladder on bile duct sphincter of the XXXX .

@entity235 @entity8586 @entity17222
AIM: To study the relationship between the radiological anatomy and the dynamics on bile duct sphincter in bile draining and regularizing effect of gallbladder. METHODS: Sixteen healthy @entity235 weighing 18 kg to 25 kg were divided randomly into control group and experimental group (cholecystectomy group). Cineradiography, manometry with perfusion, to effect of endogenous @entity8586 and change of ultrastructure were employed. RESULTS: According to finding of the choledochography and manometry, in control group the intraluminal basal pressure of cephalic cyclic smooth muscle of choledochal sphincter cCS was 9.0+/-2.0 mmHg and that of middle oblique smooth muscle of choledochal sphincter ( @entity17222 ) was 16.8+/-0.5 mmHg, the intraluminal basal pressure of cCS segment was obviously lower than that of @entity17222 (P<0.01) in the interval period of bile draining, but significative difference of intraluminal basal pressure of the @entity17222 segment was not found between the interval period of bile draining (16.8+/-0.5 mmHg) and the bile flowing period (15.9+/-0.9 mmHg) (P>0.05). The motility of cCS was mainly characterized by rhythmically concentric contraction, just as motility of cCS bile juice was pumped into the @entity17222 segment in control group. And motility of @entity17222 segment showed mainly diastolic and systolic activity of autonomically longitudinal peristalsis. There was spasmodic state in cCS and @entity17222 segment and reaction to endogenous @entity8586 was debased after cholecystectomy. The change of ultrastructure of cCS portion showed mainly that the myofilaments of cell line in derangement and mitochondria is swelling. CONCLUSION: During fasting, the cCS portion has a function as similar cardiac "pump" and it is main primary power source in bile draining, and @entity17222 segment serves mainly as secondary power in bile draining. The existence of the intact gallbladder is one of the important factors in guaranteeing the functional coordination between the cCS and @entity17222 of bile duct sphincter. There is dysfunction in the cCS and @entity17222 with cholecystectomy.
