alexa Squalamine lactate reduces choroidal neovascularization in a laser-injury model in the rat.


Journal of Traditional Medicine & Clinical Naturopathy

Author(s): Ciulla TA, Criswell MH, Danis RP, Williams JI, McLane MP, , Ciulla TA, Criswell MH, Danis RP, Williams JI, McLane MP,

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Abstract PURPOSE: To determine if systemically administered squalamine lactate, a novel aminosterol with antineoplastic and antiangiogenic activity, inhibits the development of experimental choroidal neovascularization membranes (CNVMs) induced by laser trauma in a rat model. METHODS: Twenty anesthetized male Brown-Norway rats received a series of 8 krypton red laser lesions per eye (647 nm, 0.05 second, 50 microm, 150 mW). One half the animals received an intraperitoneal injection of squalamine and the other one half received an injection of 5\% dextrose in water, all performed in a masked fashion. Fundus photography and fluorescein angiography were performed at postlaser treatment days 14 and 28, and ocular tissues were processed for light microscopic examination following euthanasia of the rats on postlaser treatment day 28. RESULTS: Although fundus photography and fluorescein angiography yielded no statistically significant quantitative differences between the two groups, histologic analysis of the lesion sites revealed a partial but statistically significant reduction of experimental CNVM development in the squalamine-treated population. In particular, the squalamine-treated eyes (n = 20) demonstrated lesions (n = 149) with a mean CNVM thickness +/- SD of 47 +/- 11 microm, as compared with the control eyes (n = 20) that had lesions (n = 142) with a mean CNVM thickness +/- SD of 63 +/- 14 microm (P < 0.001). CONCLUSION: Systemically administered squalamine lactate partially reduced choroidal neovascular membrane development induced by laser trauma in this animal model. In conjunction with other existing and developing therapies, this agent may have a potential role in the treatment of human CNVM formation. Further study of squalamine lactate for treatment of neovascular eye disease is warranted.
This article was published in Retina and referenced in Journal of Traditional Medicine & Clinical Naturopathy

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