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2017 ; 133
(ä): 12-30
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Metabolic Dysfunction in Parkinson s Disease: Bioenergetics, Redox Homeostasis
and Central Carbon Metabolism
#MMPMID28341600
Anandhan A
; Jacome MS
; Lei S
; Hernandez-Franco P
; Pappa A
; Panayiotidis MI
; Powers R
; Franco R
Brain Res Bull
2017[Jul]; 133
(ä): 12-30
PMID28341600
show ga
The loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) and
the accumulation of protein inclusions (Lewy bodies) are the pathological
hallmarks of Parkinson's disease (PD). PD is triggered by genetic alterations,
environmental/occupational exposures and aging. However, the exact molecular
mechanisms linking these PD risk factors to neuronal dysfunction are still
unclear. Alterations in redox homeostasis and bioenergetics (energy failure) are
thought to be central components of neurodegeneration that contribute to the
impairment of important homeostatic processes in dopaminergic cells such as
protein quality control mechanisms, neurotransmitter release/metabolism, axonal
transport of vesicles and cell survival. Importantly, both bioenergetics and
redox homeostasis are coupled to neuro-glial central carbon metabolism. We and
others have recently established a link between the alterations in central carbon
metabolism induced by PD risk factors, redox homeostasis and bioenergetics and
their contribution to the survival/death of dopaminergic cells. In this review,
we focus on the link between metabolic dysfunction, energy failure and redox
imbalance in PD, making an emphasis in the contribution of central carbon
(glucose) metabolism. The evidence summarized here strongly supports the
consideration of PD as a disorder of cell metabolism.