Premium
Effects of lapatinib and trastuzumab on vascular endothelial growth factor in experimental corneal neovascularization
Author(s) -
Kaya Mehmet K,
Demir Tamer,
Bulut Hakan,
Akpolat Nusret,
Turgut Burak
Publication year - 2015
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/ceo.12500
Subject(s) - medicine , trastuzumab , lapatinib , immunostaining , vascular endothelial growth factor , corneal neovascularization , angiogenesis , stromal cell , neovascularization , pharmacology , pathology , endocrinology , immunohistochemistry , cancer , vegf receptors , breast cancer
Background The aim of this study was to compare the effects of lapatinib and trastuzumab on vascular endothelial growth factor on experimental corneal neovascularization. Methods A total of 35 W istar albino rats were randomly divided into five groups, each containing seven animals. Corneas of rats in the control group were not cauterized and did not receive any treatment. A silver nitrate pencil was applied on the right corneas of rats in the non‐control groups to induce corneal neovascularization. Rats in the sham, lapatinib, trastuzumab and lapatinib + trastuzumab groups were administered systemic saline, 50 mg/kg lapatinib once a day orally by gavage, 4 mg/kg trastuzumab once a day intraperitoneally, or 50 mg/kg lapatinib once a day orally by gavage together with 4 mg/kg trastuzumab once a day intraperitoneally, respectively, for 7 days. Rats were sacrificed on the eighth day, and corneas were excised using a 4‐mm punch trephine. Vascular endothelial growth factor immunostaining in the corneal epithelial and stromal layers was evaluated. Staining intensities were determined semi‐quantitatively, and corneal vascular endothelial growth factor levels were measured by enzyme‐linked immunosorbent assay. Results The mean immunostaining intensities of epithelial and stromal vascular endothelial growth factor in the control group were significantly lesser than those in the sham group ( P < 0.05). The mean immunostaining intensities of epithelial and stromal vascular endothelial growth factor and vascular endothelial growth factor enzyme‐linked immunosorbent assay levels of corneas in all treatment groups (lapatinib, trastuzumab and lapatinib + trastuzumab groups) were lesser than those in the sham group ( P < 0.05); however, it was similar to those in the control group ( P > 0.05). Conclusions It is suggested that systemically administered lapatinib is more effective than systemically administered trastuzumab in preventing corneal neovascularization.