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Open Access Research article

Idiopathic pancreatitis is a consequence of an altering spectrum of bile nucleation time

V Abeysuriya1*, KI Deen2, BK Dassanayake3, SK Kumarage4, NMM Navarathne5 and A Pathirana6

Author Affiliations

1 Department of Clinical Anatomy, Faculty of Medicine, Ragama, University of Kelaniya, Sri Lanka

2 Department of Surgery, Faculty of Medicine, Ragama, University of Kelaniya, Sri Lanka

3 University Department of Surgery, The North Colombo General Hospital, Ragama, Sri Lanka

4 Department of Surgery, Faculty of Medicine, Ragama, University of Kelaniya, Sri Lanka

5 National Hospital of Sri Lanka, Colombo, Sri Lanka

6 Department of Surgery, Faculty of Medical Sciences, University of Sri Jayawardenapura, Sri Lanka

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BMC Research Notes 2011, 4:163  doi:10.1186/1756-0500-4-163

Published: 26 May 2011

Abstract

Background

The pathogenesis of idiopathic pancreatitis (IP) remains poorly understood. Our hypothesis is that IP is a sequel of micro-crystallization of hepatic bile.

Methods

A prospective case control study compared 55 patients; symptomatic cholelithiasis - 30 (14 male, median age 36 years; mean BMI - 25.1 kg/m2), gallstone pancreatitis - 9 (3 male, median age 35 years; mean BMI - 24.86 kg/m2 ) and IP - 16 (9 male, median age 34 years; mean BMI -23.34 kg/m2) with 30 controls (15 male, median age 38 years; mean BMI = 24.5 kg/m2) undergoing laparotomy for conditions not related to the gall bladder and bile duct. Ultrafiltered bile from the common hepatic duct in patients and controls was incubated in anaerobic conditions and examined by polarized light microscopy to assess bile nucleation time (NT). In the analysis, the mean NT of patients with gallstones and gallstone pancreatitis was taken as a cumulative mean NT for those with established gallstone disease (EGD).

Results

Patients were similar to controls. Mean NT in all groups of patients was significantly shorter than controls (EGD cumulative mean NT, 1.73 +/- 0.2 days vs. controls, 12.74 +/- 0.4 days, P = 0.001 and IP patients mean NT, 3.1 +/- 0.24 days vs. controls, 12.74 +/- 0.4 days, P = 0.001). However, NT in those with IP was longer compared with those with EGD (mean NT in IP, 3.1 +/- 0.24 days vs. cumulative mean in EGD: 1.73 +/- 0.2 days, P = 0.002).

Conclusion

Nucleation time of bile in patients with IP is abnormal and is intermediate to nucleation time of lithogenic bile at one end of the spectrum of lithogenicity and non-lithogenic bile, at the other end.