This study was designed for changes in endotoxaemia, endotoxin-binding factors, sICAM-1 (soluble intracellular adhesion molecule-1), and cytokines during progression of chronic HBV infection. Patients with chronic HBV infection and healthy control are included. A limulus assay was used to measure plasma endotoxin level and ELISAs were used to measure the concentrations of interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor-α (TNFα), sICAM-1, and soluble CD14 (sCD14).
1. Patients Patients with chronic HBV infection and healthy volunteers were enrolled. There were asymptomatic carriers group, patients with chronic hepatitis, patients with hepatic cirrhosis, and patients with acute on chronic liver failure. 2. Endotoxin assay Blood samples were obtained under aseptic conditions by peripheral venipuncture and using pyrogen-free syringes, needles, and glassware. Plasma samples were heated at 70℃ for 10 min. Plasma concentration was then measured in duplicate using a commercially available Limulus amebocyte lysate assay following the manufacturer's protocol. 3. ELISA ELISA kits were used to assess in duplicate the plasma concentrations of IL-6, IL-10, TNFα, sICAM-1 and sCD14.
Study Type
OBSERVATIONAL
Enrollment
140
The Third Affliated Hospital of Sun Yat-sen University
Guangzhou, Guangdong, China
plasma levels of endotoxin
Time frame: 4 months
serum albumin level
Time frame: 4 months
Plasma cytokine concentration
ELISA kits were used to assess in duplicate the plasma concentrations of IL-6, IL-10, TNFα, and sICAM-1 (Bender, Vienna, Austria).
Time frame: 4 months
serum low density lipoprotein (LDL) level
Time frame: 4 months
serum high density lipoprotein (HDL) level
Time frame: 4 months
plasma sCD14 level
ELISA kits were used to assess in duplicate the plasma concentrations of soluble CD14 (sCD14) (R\&D Systems, Minneapolis, MN).
Time frame: 4 months
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