Cited by 42Mitochondrial Function and PathologyAdipose Tissue and MetabolismCoenzyme Q10 studies and effects

Fasting, lipid metabolism, and triiodothyronine in rat gastrocnemius muscle: interrelated roles of uncoupling protein 3, mitochondrial thioesterase, and coenzyme Q

Moreno, Maria, Lombardi, Assunta, De Lange, Pieter, Silvestri, Elena, Ragni, Maurizio, Lanni, Antonia, Goglia, Fernando·2003·The FASEB Journal

Abstract

We investigated the role of uncoupling protein 3 (UCP3) during fasting and examined the effect of triiodothyronine (T3) administration in such a condition. The possible involvement of mitochondrial thioesterase (MTE I) and the role of putative cofactors, such as coenzyme Q (CoQ), was also examined. Here, we report that fasting induced a more than twofold elevation in the expression and activity of MTE I, and an increase in UCP3 expression, without any associated uncoupling activity. Administration of T3 to fasting rats further up‐regulated UCP3 as well as MTE I expression, markedly enhanced MTE I enzyme activity and prevented the impairment of the uncoupling activity of UCP3 normally seen during fasting. Indeed, T3‐treatment induced an UCP3‐dependent decrease in mitochondrial membrane potential, which was abolished by the addition of either GDP or superoxide dismutase (SOD). T3 administration also prevented the marked decrease of CoQ levels observed in fasting rats and this provides evidence that also, in vivo , CoQ represents an essential cofactor for the UCP3‐mediated uncoupling. The data also show that MTE I and UCP3 are likely involved in the same biochemical mechanism and that UCP3 postulated functions, such as lipid handling and uncoupling, are not mutually exclusive but may coexist in vivo .

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Crossref · 10.1096/fj.02-0839fje

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Authors
Moreno, M., Lombardi, A., De Lange, P., Silvestri, E., Ragni, M., Lanni, A., & Goglia, F.
Affiliations
  • Dipartimento di Scienze Biologiche ed Ambientali Università degli Studi del Sannio Via Port'Arsa 11 82100 Benevento Italy
  • University of Naples Federico II (IT)
  • Dipartimento di Scienze della Vita Seconda Università degli Studi di Napoli Via Vivaldi 43 81100 Caserta Italy
  • University of Sannio (IT)
  • University of Campania "Luigi Vanvitelli" (IT)
Venue
The FASEB Journal
Publisher
Wiley
Published
2003-04-08
Volume
17
Issue
9
Pages
1112-1114
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2147039012
Cited by
42
References
52
Citations by year
2025: 1 · 2024: 1 · 2022: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 1 · 2014: 1 · 2013: 1 · 2012: 1
FWCI
1.95
Type
journal article
Language
en
Open access
closed
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli" (submittedVersion)
Funders
Ministero dell’Istruzione, dell’Università e della Ricerca (2002058717)
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 › Coenzyme Q10 studies and effects
Keywords
fasting, UCP3, coenzyme Q10, triiodothyronine, gastrocnemius, lipid metabolism, mitochondrial uncoupling, mitochondrial membrane potential, superoxide dismutase, gross domestic product, thyroid hormone regulation
MeSH terms
Uncoupling Protein 3, Animals, Carnitine O-Palmitoyltransferase, Carrier Proteins, Fasting, Fatty Acids, Ion Channels, Mitochondria, Models, Biological, Oxidation-Reduction, Palmitoylcarnitine, RNA, Messenger, Thiolester Hydrolases, Triiodothyronine, Ubiquinone, Muscle, Skeletal, Mitochondrial Proteins, Lipid Metabolism, Rats

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