V Jayanthi1, S Sarika2, Joy Varghese3, V Vaithiswaran4, Malay Sharma5, Mettu Srinivas Reddy3, Vijaya Srinivasan4, G M M Reddy6, Mohamed Rela3, S Kalkura2. 1. Gastroenterology and Hepatology, Institute of Gastrosciences, Global Health City, 439, Cheran Nagar, Chennai, 600 100, India. drjayanthi35@yahoo.co.in. 2. Crystal Growth Center, AC Technology, University of Madras, Chepauk, Chennai, 600 005, India. 3. Institute of Liver Disease and Liver Transplant, Global Health City, 439, Cheran Nagar, Chennai, 600 100, India. 4. Gastroenterology and Hepatology, Institute of Gastrosciences, Global Health City, 439, Cheran Nagar, Chennai, 600 100, India. 5. Jaswant Rai Specialty Hospital, Mawana Road, Meerut, 250 001, India. 6. Chettinad Hospital and Research Institute, Rajiv Gandhi Salai, OMR Chennai, Kelambakkam, Chennai, 603 103, India.
Abstract
BACKGROUND: Gallstones (GS) in south India (SI) are predominantly pure pigment or mixed, while in North India (NI), these are either pure cholesterol or mixed. While cholesterol rich gallbladder (GB) bile predicts cholesterol GS, constituent of bile in primary pigment GS is not known. We compared the composition of GB bile from healthy liver donors and patients with GS from north and south India. METHODS: Gallbladder bile from healthy liver donors from north (10) and south India (8) served as controls. Cases were patients from north (21) and south India (17) who underwent cholecystectomy for GS disease. Gallbladder bile from both cases and controls was analyzed for cholesterol, lecithin (phospholipid), and bile salts. Gallstones were classified as cholesterol, mixed, and pigment based on morphology and biochemical analysis. RESULTS: The median cholesterol concentration in control bile from north was significantly high compared to south (p<0.001) with no difference in lecithin and bile salts (p NS). Except for one sample each from north and south, the cholesterol solubility of controls was within the critical micellar zone. Mixed GS were most frequent in north India (61.9 %) while pigment GS dominated in south (61.9 %). The median cholesterol concentration in bile samples of cholecystectomy patients from north India was significantly high GS (p < 0.00001) with significant lowering of bile salts and lecithin (p < 0.00001). In south India, patients with mixed GS had high cholesterol content in bile compared to controls and patients with pigment GS; bile in latter had significantly higher concentration of bile salt compared to controls and mixed GS. The ternary plot confirmed the composition of GB bile from north and south India. CONCLUSIONS: Gallbladder bile in controls and patients with GS from north India had significantly high cholesterol concentration. In south India, patients with mixed GS had cholesterol rich bile while pigment GS had higher concentrations of bile salts.
BACKGROUND: Gallstones (GS) in south India (SI) are predominantly pure pigment or mixed, while in North India (NI), these are either pure cholesterol or mixed. While cholesterol rich gallbladder (GB) bile predicts cholesterolGS, constituent of bile in primary pigment GS is not known. We compared the composition of GB bile from healthy liver donors and patients with GS from north and south India. METHODS: Gallbladder bile from healthy liver donors from north (10) and south India (8) served as controls. Cases were patients from north (21) and south India (17) who underwent cholecystectomy for GS disease. Gallbladder bile from both cases and controls was analyzed for cholesterol, lecithin (phospholipid), and bile salts. Gallstones were classified as cholesterol, mixed, and pigment based on morphology and biochemical analysis. RESULTS: The median cholesterol concentration in control bile from north was significantly high compared to south (p<0.001) with no difference in lecithin and bile salts (p NS). Except for one sample each from north and south, the cholesterol solubility of controls was within the critical micellar zone. Mixed GS were most frequent in north India (61.9 %) while pigment GS dominated in south (61.9 %). The median cholesterol concentration in bile samples of cholecystectomy patients from north India was significantly high GS (p < 0.00001) with significant lowering of bile salts and lecithin (p < 0.00001). In south India, patients with mixed GS had high cholesterol content in bile compared to controls and patients with pigment GS; bile in latter had significantly higher concentration of bile salt compared to controls and mixed GS. The ternary plot confirmed the composition of GB bile from north and south India. CONCLUSIONS: Gallbladder bile in controls and patients with GS from north India had significantly high cholesterol concentration. In south India, patients with mixed GS had cholesterol rich bile while pigment GS had higher concentrations of bile salts.
Entities:
Keywords:
Bile acids; Bile salts; Cholesterol; Gallstone disease; Healthy gallbladder bile; Lecithin
Authors: Muhammed A P Manzoor; Abhijith S Sudhakar; Sajida Abdul Kadar; M S Moosabba; Punchappady-Devasya Rekha Journal: Indian J Gastroenterol Date: 2019-12-05