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Bacterial DNA translocation is associated with overt hepatic encephalopathy and mortality in patients with cirrhosis.
Clinical and Translational Gastroenterology 2024 March 16
INTRODUCTION: Data on the relationship between bacterial translocation, hepatic encephalopathy (HE), and mortality are scarce. This study aimed to assess the association between bacterial DNA (bactDNA) translocation, inflammatory response, ammonia levels, and severity of HE in patients with cirrhosis, as well as the role of bactDNA translocation in predicting mortality.
METHODS: Cirrhotic patients without bacterial infection were prospectively enrolled between June 2022 and January 2023. Grading of HE was classified by the West Haven Criteria and Psychometric hepatic encephalopathy score (PHES) ≤ -5.
RESULTS: Overall, 294 cirrhotic patients were enrolled, with 92 (31.3%) and 58 (19.7%) having covert and overt HE, respectively. BactDNA translocation was detected in 36.1% of patients (n = 106). Patients with overt HE had more bactDNA translocation and higher serum lipopolysaccharide-binding protein (LBP), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and ammonia levels than those without HE. Patients with detectable bactDNA had higher white cell counts and serum LBP and IL-6 levels than those without. In contrast, bactDNA, serum LBP, and soluble CD14 levels were comparable between patients with covert HE and those without HE. The multivariate Cox regression analysis revealed that bactDNA translocation (HR=2.49, 95%CI: 1.22-5.11), MELD score (HR=1.12, 95%CI: 1.09-1.16), age (HR=1.05, 95%CI: 1.000-1.002), and baseline IL-6 (HR=1.001, 95% CI: 1.000-1.002) were independent factors associated with six-month mortality.
CONCLUSIONS: Apart from hyperammonemia, bactDNA translocation is a possible factor associated with overt HE in cirrhotic patients. BactDNA translocation and IL-6 are independent factors associated with six-month mortality.
METHODS: Cirrhotic patients without bacterial infection were prospectively enrolled between June 2022 and January 2023. Grading of HE was classified by the West Haven Criteria and Psychometric hepatic encephalopathy score (PHES) ≤ -5.
RESULTS: Overall, 294 cirrhotic patients were enrolled, with 92 (31.3%) and 58 (19.7%) having covert and overt HE, respectively. BactDNA translocation was detected in 36.1% of patients (n = 106). Patients with overt HE had more bactDNA translocation and higher serum lipopolysaccharide-binding protein (LBP), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and ammonia levels than those without HE. Patients with detectable bactDNA had higher white cell counts and serum LBP and IL-6 levels than those without. In contrast, bactDNA, serum LBP, and soluble CD14 levels were comparable between patients with covert HE and those without HE. The multivariate Cox regression analysis revealed that bactDNA translocation (HR=2.49, 95%CI: 1.22-5.11), MELD score (HR=1.12, 95%CI: 1.09-1.16), age (HR=1.05, 95%CI: 1.000-1.002), and baseline IL-6 (HR=1.001, 95% CI: 1.000-1.002) were independent factors associated with six-month mortality.
CONCLUSIONS: Apart from hyperammonemia, bactDNA translocation is a possible factor associated with overt HE in cirrhotic patients. BactDNA translocation and IL-6 are independent factors associated with six-month mortality.
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