Background: In hemodialysis (HD) patients, impaired gut barrier and alteration in microbiota in the gut is thought to increase the risk of bacterial translocation and chronic inflammation. Lipopolysaccharide-binding protein (LBP) is an acute-phase reactant that mediates immune responses triggered by microbial products. Our aim is to investigate the relationship between circulating levels of LBP, and various metabolic and inflammatory markers in HD patients. Besides, we also aim to determine its relationship among -patients with different body mass index. Patients and Methods: A total of 123 HD patients were stratified into three -tertiles, according to serum LBP level. The LBP and inflammatory markers were determined using immunoassay methods. A bioimpedance spectroscopy device was used for body composition measurement. Results: The serum levels of the two proinflammatory markers, high-sensitivity C-reactive protein (hsCRP) and interleukin (IL)-6, were significantly higher in patients in the upper tertile when compared with the rest of the tertiles. In HD patients, a significant positive correlation was found between serum LBP levels and CRP, IL-6, soluble CD14 (sCD14), and fasting blood glucose levels. Patients with metabolic syndrome and pre-existing cardiovascular disease had higher LBP levels than those without metabolic syndrome. Besides, obese patients were also associated with higher serum LBP levels. Multivariate regression analyses showed that IL-6 level was the strongest correlate of LBP level, followed by hsCRP level and sCD14. Conclusions: Our study suggested that elevated plasma LBP was associated with metabolic syndrome and obesity. In addition, increased LBP level was correlated positively to markers of inflammation, and sCD14 levels.

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