Early exposure to Western diet exacerbates visual outcomes in female mice.
Meseguer, D.; Furtado, J.; Zapadka, T.; Rodriguez, A.; Na, D.; Grajales, J.; Demb, J.; Eichmann, A. E.; Schneeberger, M.
Show abstract
Obesity, a growing pandemic in Western societies, significantly impacts metabolic health and contributes to visual disorders. While the systemic consequences of obesity, such as chronic inflammation and insulin resistance, are well-studied in adults, its early-life effects on retinal health remain underexplored. Using a maternal Western Diet (WD) exposure model, we investigated the developmental impact of early-life metabolic disturbances on retinal and cognitive function. Our findings reveal that WD exposure from gestation to early adulthood accelerates the onset of features resembling diabetic retinopathy, including increased retinal vascularization, inflammation, and compromised blood-retina barrier integrity, observed within just four months. Females exhibited heightened vulnerability, showing pronounced ocular defects such as anophthalmia, microphthalmia, and congenital cataracts. These results underscore a critical developmental window during which metabolic disruptions predispose to sex-specific retinal and neurovascular pathologies. This work bridges the link between pediatric and adult obesity, highlighting the urgent need for early interventions to mitigate long-term visual impairments that could further impair recognition memory.
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