Increased circulating PEDF and low sICAM-1 are associated with sickle cell retinopathy
| Autor: | Cruz, Pedro Rodrigues Sousa da, 1987, Lira, Rodrigo Pessoa Cavalcanti, 1973, Souza, Bruno Batista, 1983, Fertrin, Kleber Yotsumoto, 1980, Vasconcellos, José Paulo Cabral de, 1963, Zorzetto, Nicola Amanda Conran, 1972, Costa, Fernando Ferreira, 1950, Melo, Mônica Barbosa de, 1968 |
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| Přispěvatelé: | UNIVERSIDADE ESTADUAL DE CAMPINAS |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Repositório da Produção Científica e Intelectual da Unicamp Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP Repositório Institucional da Unicamp |
| Popis: | Agradecimentos: We would like to thank Fundacao de Amparo a Pesquisa do Estado de Sao Paulo-FAPESP (grants #2009/15219-2 and #2008/57441-0) and Conselho Nacional para o Desenvolvimento Cientifico e Tecnologico-CNPq (grant #402022/2010-6) for-financial support Abstract: Sickle cell retinopathy (SCR) develops in up to 30% of sickle cell disease patients (SCD) during the second decade of life. Treatment for this affection remains palliative, so studies on its pathophysiology may contribute to the future development of novel therapies. SCR is more frequently observed in hemoglobin SC disease and derives from vaso-occlusion in the microvasculature of the retina leading to neovascularization and, eventually, to blindness. Circulating inflammatory cytokines, angiogenic factors, and their interaction may contribute to the pathophysiology of this complication. Angiopoietin (Ang)-1, Ang-2, soluble vascular cell adhesion molecule-1, intercellular adhesion molecule (ICAM)-1, E-selectin, P-selectin, IL1-beta, TNF-alpha, pigment epithelium derived factor (PEDF) and vascular endothelial growth factor plasmatic levels were determined in 37 SCD patients with retinopathy, 34 without retinopathy, and healthy controls. We observed that sICAM-1 is significantly decreased, whereas PEDF is elevated in HbSC patients with retinopathy (P = 0.012 and P = 0.031, respectively). Ang-1, Ang-2 and IL1-beta, levels were elevated in SCD patients (P = 0.001, P < 0.001 and P = 0.001, respectively), compared to controls, and HbSS patients presented higher levels of Ang-2 compared to HbSC (P < 0.001). Our study supports the possible influence of sICAM-1 and PEDF on the pathophysiology of retinal neovascularization in SCD patients FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ Fechado |
| Databáze: | OpenAIRE |
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