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ORIGINAL ARTICLE
Year : 2022  |  Volume : 2  |  Issue : 2  |  Page : 47-50

Regional differences in bile acid composition in gallbladder bile


1 Crystal Growth Centre, Anna University, Chennai, India
2 Department of Gastroenterology, Gleneagles Hospital, Chennai, India
3 Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India

Correspondence Address:
Jayanthi Venkataraman
Crystal Growth Centre, Anna University, Chennai, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ghep.ghep_1_22

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Background: Chemical and structural analyses of gallstones (GS) from the Indian subcontinent has shown that the formation of GS type is dependent on regional and dietary factors. Aim of the Study: The aim is to determine the proportion of primary and secondary bile acids in gallbladder (GB) bile in patients with GS from South and North India using high-performance liquid chromatography (HPLC). Materials and Methods: Standards for primary and secondary bile acids were prepared and concentrations were determined by reversed-phase C18 HPLC column. Thirty-three GB bile samples from southern India and 28 samples from northern states of India were analyzed for differences in the proportion of primary and secondary bile acids. Ethics Committee of Gleneagles Global Health City, Chennai, approved the study. Statistical Analysis: concentration of bile acids (in mmol/L) were expressed as median and range. Chi-square test and Mann–Whitney U-test were applied. A P < 0.05 was considered as significant. Results: The median concentrations of cholic acid (CA) (P = 0.005) and its derivative deoxycholic acid (DCA) (P < 0.006) were significantly high in GB bile samples from South India with no differences in the concentration of chenodeoxycholic acid between the two samples. Furthermore, samples from North India had a significantly higher proportion of lithocholic acid (LCA) and low DCA compared to samples from South India. Conclusion: Primary bile acid CA and its derivative is high in GB bile from South; the proportion of hepatotoxic LCA is significantly high with low concentrations of DCA in bile samples from North India.


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