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Br J Ophthalmol 2007;91:1537-1540 doi:10.1136/bjo.2007.116525
  • Scientific report
    • Laboratory science - Scientific reports

Upregulation of neurotrophic factor-related gene expression in retina with experimental autoimmune uveoretinitis by intravitreal injection of tacrolimus (FK506)

  1. Keiko Oh-i1,
  2. Hiroshi Keino1,
  3. Hiroshi Goto1,
  4. Naoyuki Yamakawa1,
  5. Masaru Takeuchi1,
  6. Masahiko Usui1,
  7. Takuya Iwasaki1
  1. 1
    Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan
  1. Hiroshi Keino, Department of Ophthalmology, Tokyo Medical University, 6–7–1, Nishi-shinjuku, Shinjuku-ku, Tokyo, Japan 160–0023; hirojunharu{at}aol.com
  • Accepted 8 April 2007
  • Published Online First 16 October 2007

Abstract

Aim: The current study was designed to determine whether intravitreal injection of tacrolimus (FK506) modulates the gene expression of neurotrophic factor-related molecules in the retina from eyes with induced experimental autoimmune uveoretinitis (EAU) in rats.

Methods: Rats were immunised with interphotoreceptor retinoid binding protein peptide (R14) and given intravitreal injection of tacrolimus on day 12 after immunisation. As control, immunised rats received intravitreal injection of vehicle. On day 15 after immunisation, changes in the genetic programme associated with neuroprotection and inflammatory responses in the retinas from both groups were determined by DNA microarray analyses and confirmed by real-time PCR analyses.

Results: The gene expression of inflammatory responses was markedly reduced in tacrolimus-treated eyes. Genes for molecules associated with neuroprotection (oestrogen receptor, erythropoietin receptor, gamma-aminobutyric acid receptor, protein kinase C, glial cell line-derived neurotrophic factor receptor, fibroblast growth factor and neuropeptide Y receptor) were upregulated in the retinas from tacrolimus-treated eyes.

Conclusions: Intravitreal injection of tacrolimus modulated the genes related to neuroprotection in the retina during the ongoing process of EAU. This treatment may be useful for the neuroprotection of retina with severe uveitis as well as for immunosuppression in the uveitic eyes.

Footnotes

  • Competing interests: None.

  • Funding: This work was supported by Grant-in-Aid 17791258 for Scientific Research from the Japan Society for the Promotion of Science.

  • K Oh-I and H Keino contributed equally to this study.

  • Abbreviations:
    EAU

    experimental autoimmune uveoretinitis

    IL

    interleukin

    IRBP

    interphotoreceptor retinoid binding protein

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