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Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology 3/2024

25.10.2023 | Inflammatory Disorders

Expression of placental growth factor, neuropilin-1, and neuropilin-2 in primary pterygium tissue

verfasst von: Ali Osman Gundogan, Refik Oltulu, Selman Belviranli, Pembe Oltulu

Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology | Ausgabe 3/2024

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Abstract

Purpose

The aim of this study was to evaluate the expression of placental growth factor (PLGF), neuropilin-1 (NP-1), and neuropilin-2 (NP-2) molecules in primary pterygium tissue compared with normal conjunctival tissue.

Methods

The records of 42 patients who underwent excision surgery with autografts for primary pterygium (pterygium group) and 20 patients who underwent conjunctival nevus excision surgery (control group) in the same period were reviewed retrospectively. The samples obtained from the pterygium tissues in the pterygium group and the clean conjunctival tissues adjacent to the nevus in the control group were collected from the archive. Immunohistochemical stains of the primary antibodies—1/100 diluted PLGF, NP-1, and NP-2 (Abcam Cambridge Science Park, UK)—were applied to all groups. Staining intensities and the percentage of positive cells in epithelial, endothelial, stromal, and inflammatory cells were analyzed by an experienced pathologist.

Results

The positivity rates of PLGF and NP-2 expression in epithelial, endothelial, stromal, and inflammatory cells were found to be higher in the pterygium group than in the control group (PLGF: p < 0.001, p < 0.001, p = 0.001, and p < 0.001, respectively; NP-2: p < 0.001 for all). Staining intensities for PLGF and NP-2 were higher in the pterygium group than in the control group (PLGF: p < 0.001, p < 0.001, p = 0.005, and p < 0.001, respectively; NP-2: p < 0.001, p < 0.001, p = 0.001, and p < 0.001, respectively). However, no significant differences were found in any cell type in terms of NP-1 expression positivity rates (p = 0.730, p = 0.121, p = 0.524, and p = 0.624, respectively) or staining intensity (p = 0.716, p = 0.147, p = 0.147, and p = 0.780, respectively).

Conclusion

PLGF and NP-2 levels were found to be higher in pterygium tissue, while there was no difference in NP-1. These results indicate the possible roles of NP-2 and PLGF in primary pterygium.
Literatur
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Metadaten
Titel
Expression of placental growth factor, neuropilin-1, and neuropilin-2 in primary pterygium tissue
verfasst von
Ali Osman Gundogan
Refik Oltulu
Selman Belviranli
Pembe Oltulu
Publikationsdatum
25.10.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Graefe's Archive for Clinical and Experimental Ophthalmology / Ausgabe 3/2024
Print ISSN: 0721-832X
Elektronische ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-023-06280-1

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