The Expression of Matrix Metalloproteinases in Eyes with Intraocular Lymphoma.

Ocul Immunol Inflamm

Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.

Published: December 2022

AI Article Synopsis

  • The study aimed to explore the expression of matrix metalloproteinases (MMPs) in human intraocular lymphoma (IOL).
  • Two enucleated eyes and seven cell-block samples from IOL patients were examined, focusing on MMP-2, MMP-9, and TIMP-4 expressions.
  • Results showed varied expression levels of these proteins in primary and secondary IOL cases, indicating that MMPs may significantly contribute to the development of IOL.

Article Abstract

Purpose: The purpose of this study is to investigate matrix metalloproteinases (MMPs) expression in human intraocular lymphoma (IOL).

Methods: Two enucleated eyes and seven cell-block samples obtained from patients with IOL who underwent vitrectomy were used. Immunopathological examinations were performed for detection of MMP-2, MMP-9, and TIMP-4 expressions.

Results: In the enucleated eye with primary IOL (PIOL), MMP-2 was negative, and MMP-9 and TIMP-4 were positive in the lymphoma cells, while in the enucleated eye with secondary IOL (SIOL), all the molecules were positive. Among the cell-block samples with PIOL, the positive rate in lymphoma cells of MMP-2, MMP-9, and TIMP-4 was 75%, 100%, and 75%, respectively. In the cell-block samples with SIOL, the positive rates of MMP-2, MMP-9, and TIMP-4 were all 100%.

Conclusions: MMP-2, MMP-9, and TIMP-4 were expressed in lymphoma cells using the specimens of human IOL, suggesting that MMPs may play an important role in the development of IOL.

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Source
http://dx.doi.org/10.1080/09273948.2021.1957122DOI Listing

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