BACKGROUND: Although well studied the association between chronic typhoid carrier state and carcinoma of the gallbladder (CaGB) remains unproven. METHODOLOGY: The study was performed at a tertiary care medical center in North India and involved 52 patients with CaGB, 223 patients with benign gallbladder diseases, 508 healthy individuals and, 424 corpses. For the detection of Salmonella enterica serovar Typhi, hepatobiliary specimens were subjected to DNA extraction for specific nested- PCR amplification of the S. Typhi flagellin gene. Anti-Vi S. Typhi antibodies were detected in serum samples from patients by indirect haemagglutination. RESULTS: Thirty five of the 52 (67.3%) CaGB patients were PCR-positive for the S. Typhi flagellin gene; significantly higher than for patients with benign gallbladder diseases (95/223, 42.6%; p<0.01) and corpses (35/424, 8.2%; p<0.001). The numbers of individuals that had significant anti-Vi antibody titres (> or = 160) in their serum were 20/52 (38.5%) for CaGB patients, 31/223 (13.9%) for patients with benign gallbladder diseases, and 47/508 (9.2%) for healthy individuals. CONCLUSIONS: Specific nested-PCR amplification of the S. Typhi flagellin gene in hepato-biliary specimens was more sensitive for detection of S. Typhi carriage than anti-Vi antibody titres in serum. The results demonstrate an association between typhoid carriage and gallbladder diseases, both CaGB and benign. S. Typhi specific immunosuppression is also suggested in patients with gallbladder diseases.
BACKGROUND: Although well studied the association between chronic typhoid carrier state and carcinoma of the gallbladder (CaGB) remains unproven. METHODOLOGY: The study was performed at a tertiary care medical center in North India and involved 52 patients with CaGB, 223 patients with benign gallbladder diseases, 508 healthy individuals and, 424 corpses. For the detection of Salmonella enterica serovar Typhi, hepatobiliary specimens were subjected to DNA extraction for specific nested- PCR amplification of the S. Typhi flagellin gene. Anti-Vi S. Typhi antibodies were detected in serum samples from patients by indirect haemagglutination. RESULTS: Thirty five of the 52 (67.3%) CaGBpatients were PCR-positive for the S. Typhi flagellin gene; significantly higher than for patients with benign gallbladder diseases (95/223, 42.6%; p<0.01) and corpses (35/424, 8.2%; p<0.001). The numbers of individuals that had significant anti-Vi antibody titres (> or = 160) in their serum were 20/52 (38.5%) for CaGBpatients, 31/223 (13.9%) for patients with benign gallbladder diseases, and 47/508 (9.2%) for healthy individuals. CONCLUSIONS: Specific nested-PCR amplification of the S. Typhi flagellin gene in hepato-biliary specimens was more sensitive for detection of S. Typhi carriage than anti-Vi antibody titres in serum. The results demonstrate an association between typhoid carriage and gallbladder diseases, both CaGB and benign. S. Typhi specific immunosuppression is also suggested in patients with gallbladder diseases.
Authors: Jill Koshiol; Aniela Wozniak; Paz Cook; Christina Adaniel; Johanna Acevedo; Lorena Azócar; Ann W Hsing; Juan C Roa; Marcela F Pasetti; Juan F Miquel; Myron M Levine; Catterina Ferreccio Journal: Cancer Med Date: 2016-10-11 Impact factor: 4.452
Authors: Lapo Mughini-Gras; Michael Schaapveld; Jolanda Kramers; Sofie Mooij; E Andra Neefjes-Borst; Wilfrid van Pelt; Jacques Neefjes Journal: PLoS One Date: 2018-01-17 Impact factor: 3.240