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Extracellular vesicles (EVs) are nanoscale membrane vesicles of various sizes that can be secreted by most cells. EVs contain a diverse array of cargo, including RNAs, lipids, proteins, and other molecules with functions of intercellular communication, immune modulation, and regulation of physiological and pathological processes. The biofluids in the eye, including tears, aqueous humor, and vitreous humor, are important sources for EV-based diagnosis of ocular disease. Because the molecular cargos may reflect the biology of their parental cells, EVs in these biofluids, as well as in the blood, have been recognized as promising candidates as biomarkers for early diagnosis of ocular disease. Moreover, EVs have also been used as therapeutics and targeted drug delivery nanocarriers in many ocular disorders because of their low immunogenicity and superior biocompatibility in nature. In this review, we provide an overview of the recent advances in the field of EV-based studies on the diagnosis and therapeutics of ocular disease. We summarized the origins of EVs applied in ocular disease, assessed different methods for EV isolation from ocular biofluid samples, highlighted bioengineering strategies of EVs as drug delivery systems, introduced the latest applications in the diagnosis and treatment of ocular disease, and presented their potential in the current clinical trials. Finally, we briefly discussed the challenges of EV-based studies in ocular disease and some issues of concern for better focusing on clinical translational studies of EVs in the future.
Extracellular vesicles (EVs) are nanoscale membrane vesicles of various sizes that can be secreted by most cells. EVs contain a diverse array of cargo, including RNAs, lipids, proteins, and other molecules with functions of intercellular communication, immune modulation, and regulation of physiological and pathological processes. The biofluids in the eye, including tears, aqueous humor, and vitreous humor, are important sources for EV-based diagnosis of ocular disease. Because the molecular cargos may reflect the biology of their parental cells, EVs in these biofluids, as well as in the blood, have been recognized as promising candidates as biomarkers for early diagnosis of ocular disease. Moreover, EVs have also been used as therapeutics and targeted drug delivery nanocarriers in many ocular disorders because of their low immunogenicity and superior biocompatibility in nature. In this review, we provide an overview of the recent advances in the field of EV-based studies on the diagnosis and therapeutics of ocular disease. We summarized the origins of EVs applied in ocular disease, assessed different methods for EV isolation from ocular biofluid samples, highlighted bioengineering strategies of EVs as drug delivery systems, introduced the latest applications in the diagnosis and treatment of ocular disease, and presented their potential in the current clinical trials. Finally, we briefly discussed the challenges of EV-based studies in ocular disease and some issues of concern for better focusing on clinical translational studies of EVs in the future.
Introduction: To report the global, regional, and national burden of retinoblastoma between 1990 and 2021, by age, sex, and sociodemographic index (SDI). Methods: We leveraged the Global Burden of Disease 2021 Study to elucidate the epidemiological landscape of retinoblastoma, encompassing prevalence, incidence, mortality, and disability-adjusted life years (DALYs) across 204 nations and territories spanning the period from 1990 to 2021. The SDI was employed to evaluate the interplay between socio-economic development and the burden of retinoblastoma. Results: In 2021, global estimates unveiled 57,333 prevalent cases of retinoblastoma, yielding 6,274 incident cases, 2,762 deaths, and 243,204 DALYs. Globally, the age-standardized prevalence, incidence, mortality, and DALY rates for retinoblastoma in 2021 were 0.86, 0.09, 0.04, and 3.65 per 100,000 population, respectively. Tokelau, Kenya, and Portugal demonstrated the highest age-standardized prevalence and incidence rates of retinoblastoma in 2021. The global prevalence of retinoblastoma peaks among children aged 2 to 4 years and subsequently declines with increasing age. At the regional level, the correlation between SDI and age-standardized prevalence rates for retinoblastoma manifested a V-shaped pattern. Conclusions: This comprehensive examination of retinoblastoma epidemiological trends underscores the imperative for heightened vigilance and more efficacious therapeutic interventions, especially within resource-limited environments. The findings accentuate the need for targeted strategies to address the disparate burden of retinoblastoma across diverse socioeconomic landscapes.
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