High blood sugar can lead to diabetic retinopathy and subsequent blindness. Glucose is now found to quench a growth factor that keeps pericytes alive. Without these key support cells, the retinal vasculature degenerates (pages 1298–1306).
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Antonetti, D. Eye vessels saved by rescuing their pericyte partners. Nat Med 15, 1248–1249 (2009). https://doi.org/10.1038/nm1109-1248
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DOI: https://doi.org/10.1038/nm1109-1248