Abstract
The functional loss of mitochondria represents an inherent part in modern theories trying to explain the cutaneous aging process. The present study shows significant age-dependent differences in mitochondrial function of keratinocytes isolated from skin biopsies of young and old donors. Our data let us postulate that energy metabolism shifts to a predominantly non-mitochondrial pathway and is therefore functionally anaerobic with advancing age. CoQ10 positively influences the age-affected cellular metabolism and enables to combat signs of aging starting at the cellular level. As a consequence topical application of CoQ10 is beneficial for human skin as it rapidly improves mitochondrial function in skin in vivo.
MeSH terms
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Adult
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Aged
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Anaerobiosis / physiology*
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Electron Transport Complex I / metabolism
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Electron Transport Complex II / metabolism
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Electron Transport Complex III / metabolism
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Glucose / metabolism
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Glucose Transporter Type 1 / biosynthesis
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Glycolysis
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Humans
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Keratinocytes / drug effects
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Keratinocytes / metabolism
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Lactic Acid / biosynthesis
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Membrane Potential, Mitochondrial / drug effects
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Mitochondria / drug effects
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Mitochondria / physiology*
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Oligomycins / pharmacology
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Proton-Translocating ATPases / metabolism
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Reactive Oxygen Species / metabolism
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Skin / growth & development*
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Skin / radiation effects
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Skin / ultrastructure
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Skin Aging / physiology*
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Ubiquinone / analogs & derivatives*
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Ubiquinone / pharmacology
Substances
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Glucose Transporter Type 1
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Oligomycins
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Reactive Oxygen Species
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Ubiquinone
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Lactic Acid
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Electron Transport Complex II
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Proton-Translocating ATPases
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Electron Transport Complex I
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Electron Transport Complex III
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coenzyme Q10
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Glucose