Cited by 121Mitochondrial Function and PathologyAdipose Tissue and MetabolismATP Synthase and ATPases Research

The efficiency of cellular energy transduction and its implications for obesity

Harper, Mary-Ellen, Green, Katherine, Brand, Martin D.·2008·Annual Review of Nutrition

Abstract

We assess the existence, mechanism, and functions of less-than-maximal coupling efficiency of mitochondrial oxidative phosphorylation and its potential as a target for future antiobesity interventions. Coupling efficiency is the proportion of oxygen consumption used to make adenosine triphosphate (ATP) and do useful work. High coupling efficiency may lead to fat deposition; low coupling efficiency to a decrease in fat stores. We review obligatory and facultative energy expenditure and the role of a futile cycle of proton pumping and proton leak across the mitochondrial inner membrane in dissipating energy. Basal proton conductance is catalyzed primarily by the adenine nucleotide translocase but can be mimicked by chemical uncouplers. Inducible proton conductance is catalyzed by specific uncoupling proteins. We discuss the opportunities and pitfalls of targeting these processes as a treatment for obesity by decreasing coupling efficiency and increasing energy expenditure, either directly or through central mechanisms of energy homeostasis.

Integrity signals

Registry

Crossref · 10.1146/annurev.nutr.28.061807.155357

Cites

164 of 164 references verified0 citation errors · 0 not checkable

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  • BMR includes cellular turnover, repair and basic functions, basal synthetic reactions, mitochondrial proton leak, and obligatory thermogenesis.

    “BMR includes cellular turnover, repair and basic functions (e.g., maintenance of ion gradients, transmembrane metabolite transfer), basal synthetic reactions (e.g., RNA, DNA protein synthesis) and mitochondrial proton leak; it also includes obligatory thermogenesis (e.g., digestion and absorption) [7, 46].”

    From Regulation of obesity and insulin resistance by nitric oxide (2014) · cites this paper as [46]

  • The basal metabolic rate is the largest contributor to obligatory energy expenditure.

    “The largest contributor to obligatory energy expenditure is the basal metabolic rate (BMR), which is defined as the resting energy expenditure at thermoneutrality in the unfed state [46].”

    From Regulation of obesity and insulin resistance by nitric oxide (2014) · cites this paper as [46]

  • Dinitrophenol (DNP), a non-selective uncoupler of mitochondrial oxidation, effectively increases energy expenditure that could be sustained without tolerance.

    “For example, dinitrophenol (DNP), a non-selective uncoupler of mitochondrial oxidation, effectively increases energy expenditure that could be sustained without tolerance 18.”

    From Cellular bioenergetics as a target for obesity therapy (2010) · cites this paper as [18]

  • DNP produces unwanted side effects that preclude its use as therapy.

    “Unfortunately DNP produces unwanted side effects that preclude its use as therapy.”

    From Cellular bioenergetics as a target for obesity therapy (2010) · cites this paper as [18]

  • There is no convincing data to support the involvement of UCP2 or UCP3 in thermogenesis.

    “However, there is no convincing data to support their involvement in thermogenesis 18.”

    From Cellular bioenergetics as a target for obesity therapy (2010) · cites this paper as [18]

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Authors
Harper, M.-E., Green, K., & Brand, M. D.
Affiliations
  • University of Ottawa (CA)
  • MRC Mitochondrial Biology Unit (GB)
Corresponding author
  • Harper, Mary-Ellen
  • Brand, Martin D.
Venue
Annual Review of Nutrition
Published
2008-08-01
Volume
28
Issue
1
Pages
13-33
ISSN
  • 0199-9885 (ISSN-L)
  • 1545-4312
OpenAlex
W2128879584
Cited by
121
References
164
Citations by year
2024: 2 · 2023: 6 · 2022: 5 · 2021: 6 · 2020: 3 · 2019: 5 · 2018: 8 · 2017: 6 · 2016: 7 · 2015: 7 · 2014: 11 · 2013: 10 · 2012: 15
FWCI
0.77
Type
journal article
Language
en
Open access
closed
Locations
  • Annual Review of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
Keywords
mitochondrial coupling efficiency, oxidative phosphorylation, obesity, energy expenditure, proton leak, uncoupling proteins, adenine nucleotide translocase, ATP production, fat deposition, energy homeostasis
MeSH terms
Adenosine Triphosphate, Basal Metabolism, Energy Metabolism, Humans, Mitochondria, Obesity, Uncoupling Agents, Signal Transduction

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