African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5093

Full Length Research Paper

Incidence of bacterial infection in chronic hepatitis C virus (HCV) patients with cirrhosis and association between toll-like receptor 4 D299G gene polymorphism and Gram- negative bacterial infections in the patients

Hanan El-Bassat
  • Hanan El-Bassat
  • Department of Tropical Medicine, Faculty of Medicine, Tanta University, Egypt.
  • Google Scholar
Lobna Abo Ali
  • Lobna Abo Ali
  • Department of Tropical Medicine, Faculty of Medicine, Tanta University, Egypt.
  • Google Scholar
Atef Taha
  • Atef Taha
  • Department of Internal Medicine, Faculty of Medicine, Tanta University, Egypt.
  • Google Scholar
Rasha Alm El-Din
  • Rasha Alm El-Din
  • Department of Medical Microbiology and Immunology, Faculty of Medicine, Tanta University, Egypt.
  • Google Scholar


  •  Received: 19 January 2018
  •  Accepted: 22 March 2018
  •  Published: 07 April 2018

Abstract

This study aimed to investigate the incidence of bacterial infection in chronic hepatitis C virus (HCV) patients with cirrhosis and association between toll-like receptor 4 D299G gene polymorphism and Gram-negative bacterial infections in the patients. 100 HCV cirrhotic patients with ascites and 20 age- and sex-matched healthy subjects as control were included. Conventional culture methods were used to identify the causative organism of infection. Toll-like receptor 4 D299G polymorphism was detected by PCR- RFLP (polymerase chain reaction – restriction fragment length polymorphism). Patients were divided into: Group I: 100 HCV cirrhotic patients with ascites. They were subdivided into: Group I (a): Patients with Toll-like receptor 4 D299G polymorphism, Group I (b): Patients without polymorphism. Group II (control): 20 healthy subjects. This study showed significant higher incidence of infections in cirrhotic patients with Toll-like receptor 4 D299G polymorphism which play a role in the development of bacterial infection in cirrhotic patients that makes down-regulation of TLR4 response one of the immune mechanisms predisposed to Gram negative bacterial infection in cirrhotic patients.
 
Key words: TLR-4 gene polymorphism, cirrhosis, bacterial infection.