Molecular Insights Into Carotenoid-Based Interventions for Diabetic Retinopathy

Chengzhi Liu1, Xinyu Wang1, Mingyue Liu1

  • 1Beijing Ophthalmology and Visual Science Key Lab, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China.

Nutrition Bulletin
|July 9, 2025
PubMed

Insights

Carotenoids, natural antioxidants, show promise in protecting the retina from diabetic retinopathy (DR) damage. Further research may lead to carotenoid-based treatments for this leading cause of adult blindness.

Area of Science:

  • Ophthalmology
  • Nutritional Science
  • Molecular Biology

Background:

  • Diabetic retinopathy (DR) is a major cause of adult blindness, linked to high blood sugar damaging retinal tissue.
  • Antioxidant phytochemicals, especially carotenoids, are being investigated for their potential to counteract these damaging effects.
  • Carotenoids neutralize harmful reactive oxygen species and reduce inflammation, offering a potential protective mechanism.

Purpose of the Study:

  • To comprehensively analyze the molecular mechanisms of carotenoid action in retinal protection against DR.
  • To focus on how carotenoids combat oxidative stress, maintain retinal integrity, and prevent neovascularization in DR.
  • To highlight the therapeutic potential of carotenoids as natural interventions for DR.

Main Methods:

  • Literature review of recent studies on carotenoids and diabetic retinopathy.
  • Analysis of molecular pathways involved in oxidative stress and inflammation in the retina.
  • Examination of carotenoid's role in preventing retinal neovascularization.

Main Results:

  • Carotenoids demonstrate significant antioxidant properties, neutralizing reactive oxygen species and reducing inflammation.
  • Evidence suggests carotenoids help preserve retinal integrity and may prevent pathological neovascularization.
  • Key findings underscore the potential of carotenoids in mitigating DR progression.

Conclusions:

  • Carotenoids possess therapeutic potential as natural agents against diabetic retinopathy.
  • Understanding their molecular mechanisms supports their role in combating DR-induced retinal damage.
  • Further investigation into bioavailability and dosage is needed for clinical application.