VDAC in Retinal Health and Disease.
Level 5 - mechanism / opinion, no new human data
Narrative review of preclinical and mechanistic studies without original clinical data.
PubMed 38927058 · doi:10.3390/biom14060654
What was done
This narrative review summarizes published literature on the localization, physiological roles, and pathogenic mechanisms of voltage-dependent anion channel (VDAC) isoforms (VDAC1, VDAC2, VDAC3) in retinal health and degenerative diseases.
What was found
The abstract reports no quantitative data or specific statistical metrics. Mechanistically, all three VDAC isoforms are expressed in the retina, with VDAC2 and VDAC3 prominently expressed in most retinal cells, and VDAC2 co-expressed with HK2 and PKM2 in photoreceptors. VDAC overexpression is observed in retinitis pigmentosa, age-related macular degeneration, and glaucoma models, where antioxidant treatment or inhibition of VDAC oligomerization reduced VDAC expression and enhanced cell survival.
Why it matters
It highlights VDAC as a mitochondrial regulator of retinal metabolism and apoptosis, identifying VDAC oligomerization inhibition as a candidate therapeutic approach for retinal degenerations.
Limits
This is a narrative review with no original empirical data or systematic search methodology reported. The exact localization and distinct functional roles of individual VDAC isoforms in specific retinal cell types remain undefined, and therapeutic findings derive from preclinical models without clinical trial validation.
Cited by
- supports Human retinas have a higher density of mitochondria and a higher metabolic rate than any other tissue in the body.
- supports Retinal tissue has the highest concentration of mitochondria of any tissue in the human body.