The Emerging Role of Gut Microbiota in Age-Related Macular Degeneration

Area of Science:

• Ophthalmology and Microbiology
• Investigates the gut-retina axis in relation to retinal diseases.

Background:

• Age-related macular degeneration (AMD) is a leading cause of global blindness with unclear pathogenesis.
• Current AMD treatments have limited efficacy, and primary prevention strategies are lacking.
• The gut microbiome is increasingly recognized for its role in systemic health and disease.

Purpose of the Study:

• To review and synthesize current research on the gut microbiome's influence on retinal biology and AMD.
• To explore the concept of the gut-retina axis and its implications for AMD pathogenesis.
• To examine potential therapeutic targets within the gut microbiome for AMD.

Main Methods:

• Comprehensive literature review of human and animal studies over several decades.
• Analysis of research linking gut dysbiosis to AMD.
• Examination of preclinical models and techniques for studying gut microbiota's role in AMD.

Main Results:

• Perturbations in gut microbiota (dysbiosis) are associated with AMD.
• The gut-retina axis mediates effects on the neuroretina through metabolism and immune regulation.
• Key factors include systemic inflammation, immune responses, gene expression, and diet.

Conclusions:

• The gut microbiome plays a significant role in AMD pathogenesis via the gut-retina axis.
• Understanding this axis opens possibilities for novel, accessible prevention and treatment strategies for AMD.
• Further research into gut microbiota modulation holds promise for combating this vision-threatening condition.