Mitochondrial dysfunction in glaucoma and emerging bioenergetic therapies.

Abstract:

:The similarities between glaucoma and mitochondrial optic neuropathies have driven a growing interest in exploring mitochondrial function in glaucoma. The specific loss of retinal ganglion cells is a common feature of mitochondrial diseases - not only the classic mitochondrial optic neuropathies of Leber's Hereditary Optic Neuropathy and Autosomal Dominant Optic Atrophy - but also occurring together with more severe central nervous system involvement in many other syndromic mitochondrial diseases. The retinal ganglion cell, due to peculiar structural and energetic constraints, appears acutely susceptible to mitochondrial dysfunction. Mitochondrial function is also well known to decline with aging in post-mitotic tissues including neurons. Because age is a risk factor for glaucoma this adds another impetus to investigating mitochondria in this common and heterogeneous neurodegenerative disease. Mitochondrial function may be impaired by either nuclear gene or mitochondrial DNA genetic risk factors, by mechanical stress or chronic hypoperfusion consequent to the commonly raised intraocular pressure in glaucomatous eyes, or by toxic xenobiotic or even light-induced oxidative stress. If primary or secondary mitochondrial dysfunction is further established as contributing to glaucoma pathogenesis, emerging therapies aimed at optimizing mitochondrial function represent potentially exciting new clinical treatments that may slow retinal ganglion cell and vision loss in glaucoma.

journal_name

Exp Eye Res

authors

Lee S,Van Bergen NJ,Kong GY,Chrysostomou V,Waugh HS,O'Neill EC,Crowston JG,Trounce IA

doi

10.1016/j.exer.2010.07.015

subject

Has Abstract

pub_date

2011-08-01 00:00:00

pages

204-12

issue

2

eissn

0014-4835

issn

1096-0007

pii

S0014-4835(10)00226-5

journal_volume

93

pub_type

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