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Digestive Diseases and Sciences

, Volume 53, Issue 4, pp 1063–1070 | Cite as

Amelioratory Effects of Zinc Supplementation on Salmonella-induced Hepatic Damage in the Murine Model

  • Praveen Rishi
  • Pushpinder Kaur
  • Jugsharan Singh Virdi
  • Geeta Shukla
  • Ashwani Koul
Original Paper

Abstract

Zinc (Zn) has been reported to influence the susceptibility of the host to a diverse range of infectious pathogens, including viruses, bacteria, fungi and protozoa. We report here an evaluation of the effects of Zn supplementation on Salmonella enterica serovar Typhimurium (S. typhimurium)-induced hepatic injury in the murine model. Zinc levels in the plasma and liver tissues were measured by atomic absorption spectroscopy. The effect of Zn supplementation was evaluated by assessing the bacterial load and levels of lipid peroxidation (LPO), antioxidants and monokines present in the hepatic tissue as well as by histopathological studies. Zinc supplementation reduced the bacterial load in the liver and reversed hepatic microscopic abnormalities. It also decreased the levels of LPO but increased the levels of reduced glutathione (GSH) as well as the activities of superoxide-dismutase (SOD) and catalase in the livers of infected mice supplemented with Zn compared to the livers of infected mice not supplemented with Zn. Zinc supplementation was also able to modulate the levels of monokines such as tumour necrosis factor alpha (TNF-α), interleukin-1 (IL-1) and interleukin-6 (IL-6). Our results indicate a role for Zn in downregulating oxidative stress and upregulating antioxidant defense enzymes through the action of monokines, suggesting that supplementation with Zn has a protective function in Salmonella-induced liver injury.

Keywords

Liver Monokines Oxidative stress Salmonella 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Praveen Rishi
    • 1
  • Pushpinder Kaur
    • 1
  • Jugsharan Singh Virdi
    • 2
  • Geeta Shukla
    • 1
  • Ashwani Koul
    • 3
  1. 1.Department of MicrobiologyPanjab UniversityChandigarhIndia
  2. 2.Department of MicrobiologyUniversity of DelhiNew DelhiIndia
  3. 3.Department of BiophysicsPanjab UniversityChandigarhIndia

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