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Published on: November 22, 2024

Expression and potential role of major inflammatory cytokines in experimental keratomycosis

Wenxian Zhong1, Hongmei Yin, Lixin Xie

  • 1State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Qingdao, China.

Molecular Vision
|July 11, 2009
PubMed
Abstract

Insights

High levels of macrophage inflammatory protein-2 (MIP-2) and interleukin-1beta (IL-1beta) drive fungal keratitis (FK) pathogenesis. Neutralizing these cytokines with antibodies effectively reduced corneal damage and inflammation in a mouse model.

Area of Science:

  • Ophthalmology
  • Immunology
  • Microbiology

Background:

  • Fungal keratitis (FK) is a serious eye infection.
  • Understanding the inflammatory mechanisms of FK is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the expression and regulation of four key inflammatory cytokines in fungal keratitis.
  • To elucidate the role of these cytokines in FK pathogenesis.
  • To explore therapeutic strategies targeting these cytokines.

Main Methods:

  • Established a murine model of fungal keratitis using Aspergillus fumigatus and Candida albicans.
  • Monitored corneal lesions and inflammatory responses via slit-lamp and histopathology.
  • Quantified cytokine expression (MIP-2, KC, IL-1beta, IL-6) using RT-PCR and ELISA.
  • Administered neutralizing antibodies against MIP-2 and IL-1beta to assess their therapeutic effects.

Main Results:

  • Significant upregulation of MIP-2, KC, IL-1beta, and IL-6 was observed in infected corneas.
  • Treatment with MIP-2 antibodies reduced clinical scores and inflammatory markers.
  • IL-1beta antibody treatment notably decreased clinical scores, inflammation, and associated cytokine levels.

Conclusions:

  • Sustained high expression of MIP-2 and IL-1beta plays a major role in fungal keratitis pathogenesis.
  • Targeting these key cytokines with neutralizing antibodies offers a promising therapeutic approach for FK.

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