Detection of neutrophils and possible involvement of interleukin-8 in diffuse lamellar keratitis after laser in situ keratomileusis

Naoko Asano-Kato, Ikuko Toda, Shigeto Shimmura, Tomoko Noda-Tsuruya, Kazumi Fukagawa, Masaru Yoshinaga, Akihiro Matsukawa, Kazuo Tsubota

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Purpose: To investigate the cell populations in diffuse lamellar keratitis (DLK) infiltration after laser in situ keratomileusis and the possible mechanism underlying the infiltration. Setting: Department of Ophthalmology, Tokyo Dental College, Chiba, Japan. Methods: To develop DLK in rabbit eyes, 25 μL of lipopolysaccharide (LPS) solution at a concentration of 50 μg/mL was applied to the stromal bed beneath corneal flaps. For control rabbits, phosphate-buffered saline was applied. Postoperative examination by slitlamp microscopy was performed for 3 days after surgery. Rabbit eyes were excised and examined for histopathology with hematoxylin and eosin staining. Immunohistochemical analysis for interleukin (IL)-8 was performed. Results: Diffuse lamellar keratitis-like inflammation composed mainly of neutrophils was reproduced by LPS instillation in rabbit eyes. In eyes with severe inflammation, IL-8 immunoreactivity was found in the stromal keratocytes and infiltrating neutrophils. Conclusions: The major cell type in the DLK infiltration induced by LPS instillation in rabbit eyes was the neutrophil. Interleukin-8, a prototype of CXC chemokine produced by keratocytes and neutrophils, may contribute to the development of DLK.

Original languageEnglish
Pages (from-to)1996-2000
Number of pages5
JournalJournal of Cataract and Refractive Surgery
Issue number10
Publication statusPublished - 2003 Oct


ASJC Scopus subject areas

  • Surgery
  • Ophthalmology
  • Sensory Systems

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