The pathology associated with diabetic retinopathy

Area of Science:

• Ophthalmology
• Diabetology
• Pathology

Background:

• Diabetic retinopathy (DR) is a significant complication of diabetes mellitus.
• Decades of research have elucidated DR's pathological features using diverse experimental models.
• Existing treatments for DR primarily target late-stage disease, necessitating novel therapeutic strategies.

Purpose of the Study:

• To review the pathological features of diabetic retinopathy.
• To highlight the complex pathophysiology of early-stage diabetic retinopathy.
• To emphasize the role of the neurovascular unit in DR.

Main Methods:

• Review of existing literature on diabetic retinopathy.
• Analysis of descriptive and experimental studies.
• Inclusion of data from clinical studies, human post-mortem material, animal models, and in vitro systems.

Main Results:

• Accumulated knowledge on molecular mechanisms and pathogenic processes in the diabetic retina.
• Identification of complex neuronal, glial, and microvascular abnormalities in early diabetes.
• Understanding of the neurovascular unit's function in health and DR.

Conclusions:

• Despite advances, therapeutic options for DR remain limited, particularly for early stages.
• A deeper understanding of cellular and molecular pathology is crucial for developing effective DR treatments.
• Future research aims to develop efficacious therapies addressing all stages of diabetic retinopathy.