Komlodi Timea

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COST Action CA15203 (2016-2021): MitoEAGLE
Evolution-Age-Gender-Lifestyle-Environment: mitochondrial fitness mapping

Komlodi Timea

MitoPedia topics: EAGLE

COST: Member COST WG1: WG1

COST WG4: WG4

COST ECI: ECI

Name	Komlodi Timea, PharmD,PhD ORCID ID
Institution	Department of Biochemistry Semmelweis University Timea joined Oroboros Instruments from February 2017 to February 2022. She continues her collaboration with AT Innsbruck Oroboros from her position at the Semmelweis University in Budapest.
Address	Tüzolto Strett 37-47, H - 1094
City	Budapest
State/Province
Country	Hungary
Email	komlodi.timea@med.semmelweis-univ.hu
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O2k-Network Lab	AT Innsbruck Oroboros, HU Budapest Tretter L

Bioenergetics Communications

Timea Komlodi is Section Editor of the journal Bioenergetics Communications

Keywords: mitochondria, bioenergetics, reactive oxygen species, coenzyme Q redox

MitoEAGLE Short-Term Scientific Mission

- - - STSM Grant Period 1

Motivation letter

I am writing this letter to apply for the Short-Term Scientific Mission (STSM) covered by MitoEAGLE–COST Action CA15203 (1st Call for STSM Applications).

My name is Tímea Komlódi. I studied at Semmelweis University at the Faculty of Pharmacy. After graduation, in 2013, I started working as a PhD student at the Semmelweis University in the Department of Medical Biochemistry, Hungary.

My main topic of interest is energy metabolism and mitochondrial homeostasis under physiological and pathological conditions. Our group focuses mainly on neurodegenerative diseases like Alzheimer’s and Parkinson’s disease, which are attributed to mitochondrial dysfunction. I have experience in measurement of mitochondrial respiration, ATP synthesis, membrane potential, reactive oxygen species production and intra- and extramitochondrial pH detection.

In the future I am planning to deepen my knowledge about mitochondria and to expand it towards cell lines. The STSM grant would give the opportunity to deal with mitochondrial physiology and cell lines at the Oroboros Instruments in Innsbruck. The focus of the STSM project is the standardization of protocols in mitochondrial respirometry which could contribute to the scientific objective of MitoEAGLE. During the 8-day STSM mission I could acquire new measurement protocols which could be applied in future projects. These are the planned program of the STSM mission: 1.) detection of reactive oxygen species production of permeabilized cells using fluorescent probes; 2.) determination of mitochondrial membrane potential with safranin, TMRM and TPP+; 3.) assessment of mitochondrial P/O ratio by measuring ATP levels fluorometrically.

The STSM training would provide a platform for an international discussion and standardization of protocols, data and measurement techniques. Furthermore, the STSM project could be a basis of a flourishing cooperation with the Oroboros laboratory in Innsbruck in the near future.

I would like to participate in the MitoEAGLE projects because it provides the opportunity to

take part in data establishment and comparison of data between different research groups.

Moreover, Oroboros laboratory would provide a platform with its instrumental background,with its protocols and with its international connections to the objectives and aim of MitoEAGLE.

STSM request: download pdf

MitoEAGLE

- - - Benefits for COST and for the COST Action MitoEAGLE

During my PhD I worked with brain, heart and liver mitochondria isolated from guinea pig and in this summer I started to deal with cultured cell lines

Participated at

Visiting scientist in the Oroboros O2k-Laboratory

Timea Komlòdi : Visiting scientist at the Oroboros O2k-Laboratory

2016, November 21 to 28

Labels: Field of research: Basic

Publications

	Published	Reference
Donnelly 2024 Redox Biol	2024	Donnelly C, Komlódi T, Cecatto C, Cardoso LHD, Compagnion A-C, Matera A, Tavernari D, Campiche O, Paolicelli RC, Zanou N, Kayser B, Gnaiger E, Place N (2024) Functional hypoxia reduces mitochondrial calcium uptake. Redox Biol 71:103037. https://doi.org/10.1016/j.redox.2024.103037
Meszaros 2024 Transpl Int	2024	Meszaros AT, Weissenbacher A, Schartner M, Egelseer-Bruendl T, Hermann M, Unterweger J, Mittelberger C, Reyer BA, Hofmann J, Zelger BG, Hautz T, Resch T, Margreiter C, Maglione M, Komlódi T, Ulmer H, Cardini B, Troppmair J, Öfner D, Gnaiger E, Schneeberger S, Oberhuber R (2024) The predictive value of graft viability and bioenergetics testing towards the outcome in liver transplantation. Transpl Int 37:12380. https://doi.org/10.3389/ti.2024.12380
Ravasz 2024 Sci Rep	2024	Ravasz D, Bui D, Nazarian S, Pallag G, Karnok N, Roberts J, Marzullo BP, Tennant DA, Greenwood B, Kitayev A, Hill C, Komlódi T, Doerrier C, Cunatova K, Fernandez-Vizarra E, Gnaiger E, Kiebish Michael A, Raska A, Kolev K, Czumbel B, Narain NR, Seyfried TN, Chinopoulos C (2024) Residual Complex I activity and amphidirectional Complex II operation support glutamate catabolism through mtSLP in anoxia. Sci Rep 14:1729. https://doi.org/10.1038/s41598-024-51365-4
Balmaceda 2024 Biochim Biophys Acta Mol Basis Dis	2024	Balmaceda V, Komlodi T, Szibor M, Gnaiger E, Moore AL, Fernandez-Vizarra E, Viscomi C (2024) The striking differences in the bioenergetics of brain and liver mitochondria are enhanced in mitochondrial disease. Biochim Biophys Acta Mol Basis Dis 1870:167033. https://doi.org/10.1016/j.bbadis.2024.167033
Fischer 2022 Metabolites	2022	Fischer C, Valente de Souza L, Komlódi T, Garcia-Souza LF, Volani C, Tymoszuk P, Demetz E, Seifert M, Auer K, Hilbe R, Brigo N, Petzer V, Asshoff M, Gnaiger E, Weiss G (2022) Mitochondrial respiration in response to iron deficiency anemia. Comparison of peripheral blood mononuclear cells and liver. https://doi.org/10.3390/metabo12030270
Spielmann 2022 Mamm Genome	2022	Spielmann N, Schenkl C, Komlódi T, da Silva-Buttkus P, Heyne E, Rohde J, Amarie OV, Rathkolb B, Gnaiger E, Doenst T, Fuchs H, Gailus-Durner V, de Angelis MH, Szibor M (2022) Knockout of the Complex III subunit Uqcrh causes bioenergetic impairment and cardiac contractile dysfunction. Mamm Genome 10.1007/s00335-022-09973-w
Horvath 2022 Antioxidants (Basel)	2022	Horváth G, Sváb G, Komlódi T, Ravasz D, Kacsó G, Doczi J, Chinopoulos C, Ambrus A, Tretter L (2022) Reverse and forward electron flow-induced H₂O₂ formation is decreased in α-ketoglutarate dehydrogenase (α-KGDH) subunit (E2 or E3) heterozygote knock out animals. https://doi.org/10.3390/antiox11081487
Pallag 2022 Int J Mol Sci	2022	Pallag G, Nazarian S, Ravasz D, Bui D, Komlódi T, Doerrier C, Gnaiger E, Seyfried TN, Chinopoulos C (2022) Proline oxidation supports mitochondrial ATP production when Complex I is inhibited. https://doi.org/10.3390/ijms23095111
Komlodi 2022 BEC	2022	Komlódi T, Tretter L (2022) The protonmotive force – not merely membrane potential. Bioenerg Commun 2022.16. https://doi.org/10.26124/bec:2022-0016
Donnelly 2022 BEC	2022	Donnelly C, Schmitt S, Cecatto C, Cardoso LHD, Komlódi T, Place N, Kayser B, Gnaiger E (2022) The ABC of hypoxia – what is the norm. Bioenerg Commun 2022.12.v2. https://doi.org/10.26124/bec:2022-0012.v2
Komlodi 2021 BEC AmR-O2	2021	Komlódi T, Sobotka O, Gnaiger E (2021) Facts and artefacts on the oxygen dependence of hydrogen peroxide production using Amplex UltraRed. Bioenerg Commun 2021.4. https://doi.org/10.26124/bec:2021-0004
Fischer 2021 Antioxidants	2021	Fischer C, Volani C, Komlódi T, Seifert M, Demetz E, Valente de Souza L, Auer K, Petzer V, von Raffay L, Moser P, Gnaiger E, Weiss G (2021) Dietary iron overload and Hfe^-/- related hemochromatosis alter hepatic mitochondrial function. https://doi.org/10.3390/antiox10111818
Komlodi 2021 BEC Q	2021	Komlódi T, Cardoso LHD, Doerrier C, Moore AL, Rich PR, Gnaiger E (2021) Coupling and pathway control of coenzyme Q redox state and respiration in isolated mitochondria. Bioenerg Commun 2021.3. https://doi.org/10.26124/bec:2021-0003
Mikulas 2020 Materials	2020	Mikulás K, Komlódi T, Földes A, Sváb G, Horváth G, Nagy AM, Ambrus A, Gyulai-Gaál Sz, Gera I, Hermann P, Varga G, Tretter L (2020) Bioenergetic Impairment of triethylene glycol dimethacrylate- (TEGDMA-) treated dental pulp stem cells (DPSCs) and isolated brain mitochondria are amended by redox compound methylene blue. Materials (Basel) 13(16):3472.
BEC 2020.1 doi10.26124bec2020-0001.v1	2020	Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v1
Komlodi 2018 J Bioenerg Biomembr	2018	Komlódi T, Geibl FF, Sassani M, Ambrus A, Tretter L (2018) Membrane potential and delta pH dependency of reverse electron transport-associated hydrogen peroxide production in brain and heart mitochondria. J Bioenerg Biomembr 50:355-365
Komlodi 2018 Methods Mol Biol	2018	Komlodi T, Sobotka O, Krumschnabel G, Bezuidenhout N, Hiller E, Doerrier C, Gnaiger E (2018) Comparison of mitochondrial incubation media for measurement of respiration and hydrogen peroxide production. Methods Mol Biol 1782:137-55.
Mikulas 2018 Dent Mater	2018	Mikulás K, Hermann P, Gera I, Komlódi T, Horváth G, Ambrus A, Tretter L (2018) Triethylene glycol dimethacrylate impairs bioenergetic functions and induces oxidative stress in mitochondria via inhibiting respiratory Complex I. Dent Mater 34:e166-e181.
Komlodi 2017 Neuropharmacology	2017	Komlódi T, Tretter L (2017) Methylene blue stimulates substrate-level phosphorylation catalysed by succinyl-CoA ligase in the citric acid cycle. Neuropharmacology 123:287-98.
Koncsos 2016 Am J Physiol Heart Circ Physiol	2016	Koncsos G, Varga ZV, Baranyai T, Boengler K, Rohrbach S, Li L, Schlüter KD, Schreckenberg R, Radovits T, Oláh A, Mátyás C, Lux Á, Al-Khrasani M, Komlódi T, Bukosza N, Máthé D, Deres L, Barteková M, Rajtík T, Adameová A, Szigeti K, Hamar P, Helyes Z, Tretter L, Pacher P, Merkely B, Giricz Z, Schulz R, Ferdinandy P (2016) Diastolic dysfunction in prediabetic male rats: role of mitochondrial oxidative stress. Am J Physiol Heart Circ Physiol 311:H927-43.

Abstracts

	Published	Reference
Donnelly 2024 EU-METAHEART MC2 Meeting	2024	Donnelly C, Komlódi T, Cecatto C, Cardoso LHD, Kayser B, Place N, Gnaiger E (2024) Functional hypoxia in cardiac mitochondria: effects on oxidative phosphorylation, mitochondrial membrane potential, redox state of coenzyme Q, and calcium uptake. EU-METAHEART MC2 Meeting 2024 Antalya TR.
Komlodi 2023 EUROMIT2023 Bologna	2023	Komlódi T, Silva FSG, Duarte AI, Mena D, Garcia-Souza LF, Makrecka-Kuka M, Bento G, Grilo LF, Oliveira PJ, Gnaiger E (2023) Off-target effects of etomoxir: inhibition of mitochondrial Complex I and fatty acid oxidation. EUROMIT2023 International Conference on Mitochondrial Pathology.
Schmitt 2023 BPS2023 San Diego	2023	Schmitt S, Cardoso LHD, Cecatto C, Komlodi T, Gnaiger Erich (2023) Mitochondrial bioenergetics – a quantitative analytical and diagnostic approach. 67th Annual Meeting of the Biophysical Society.
Pallag 2022 Abstract Bioblast	2022	P06. Pallag Gergely, Nazarian S, Ravasz D, Bui D, Komlódi T, Doerrier C, Gnaiger E, Seyfried TN, Chinopoulos C (2022) Proline oxidation supports mitochondrial ATP production when Complex I is inhibited. Bioblast 2022: BEC Inaugural Conference. In: https://doi.org/10.26124/bec:2022-0001 »MitoFit Preprint«
Cardoso 2022 Q10 Hamburg	2022	Cardoso LHD, Donnelly C, Komlodi T, Gnaiger E (2022) Coenzyme Q redox state and respiration in permeabilized HEK 293T cells: coupling and pathway control. Q10 Hamburg.
Komlodi 2022 Q10 Hamburg	2022	Komlodi T, Cardoso LHD, Doerrier C, Moore AL, Rich PR, Gnaiger E (2022) The mitochondrial Q-junction and coenzyme Q pools: Continuous monitoring of pull and push control of respiration and redox state of the Q-mimetic CoQ₂. Q10 Hamburg.
Garcia-Roves 2022 Abstract Bioblast	2022	4.4. «10+5» Gama-Perez P, Cardoso L, Komlodi K, Bosch N, Gnaiger E, Garcia-Roves Pablo M (2022) Tuning the assessment of coenzyme Q redox state and respiration in permeabilized skeletal muscle fibers. Bioblast 2022: BEC Inaugural Conference. In: https://doi.org/10.26124/bec:2022-0001
Cardoso 2022 Abstract Bioblast	2022	4.3. «10+5» Cardoso Luiza HD, Doerrier C, Donnelly C, Komlódi T, Gnaiger E (2022) Redox monitoring and respiration - a new horizon with the NextGen-O2k. Bioblast 2022: BEC Inaugural Conference. In: https://doi.org/10.26124/bec:2022-0001
Donnelly 2022 Abstract Bioblast	2022	2.1. «10+5» Donnelly Chris, Schmitt S, Cecatto C, Cardoso L, Komlodi T, Place N, Kayser B, Gnaiger E (2022) The ABC of hypoxia – what is the norm. Bioblast 2022: BEC Inaugural Conference. In: https://doi.org/10.26124/bec:2022-0001 »MitoFit Preprint«
Komlodi 2022 Abstract Bioblast	2022	3.1. «10+5» Komlódi Timea, Tretter L (2022) The protonmotive force – not merely membrane potential. Bioblast 2022: BEC Inaugural Conference. In: https://doi.org/10.26124/bec:2022-0001 »MitoFit Preprint«
Cardoso 2022 ESCI Bari	2022	Cardoso LHD, Donnelly C, Komlódi T, Gnaiger E (2022) Bioenergetic fingerprinting with coupling and pathway control of coenzyme Q redox state and respiration in permeabilized HEK 293T cells. 56^th Annual Scientific Meeting of the European Society for Clinical Investigation.
Cardoso 2022a EBEC	2022	Cardoso LHD, Donnelly C, Komlódi T, Gnaiger E (2022) Characterizing electron transfer through the mitochondrial Q-junction from fatty acid oxidation and TCA cycle on HEK 293T cells: correlation with respiration. EBEC 2022.
Ravasz 2019 Abstract IOC141	2019	Ravasz D, Bui D, Kitayev A, Greenwood B, Hill C, Komlodi T, Doerrier C, Ozohanics O, Moore AL, Gnaiger E, Kiebish M, Kolev K, Seyfried TN, Willis WT, Narain N, Adam-Vizi V, Chinopoulos C (2019) Endogenous quinones sustain a moderate NADH oxidation by Complex I during anoxia. Mitochondr Physiol Network 24.02.
Silva 2019 MiPschool Coimbra	2019	Off-target effects of etomoxir on mitochondrial Complex I.
Silva 2019 ESCI2019	2019	Silva FSG, Komlodi T, Garcia-Souza LF, Bento G, Doerrier C, Oliveira PJ, Gnaiger E (2019) Can fatty acid oxidation be specifically blocked by the CPT1 inhibitor etomoxir?
Komlodi 2018 AussieMit	2018	Komlodi T, Hunger M, Moore AL, Gnaiger E (2018) Electron transfer at the Q-junction: new perspectives from combined measurement of mitochondrial O₂ flux, H₂O₂ flux, and coenzyme Q redox state. AussieMit 2018 Melbourne AU.
Huete-Ortega 2018 AlgaEurope2018	2018	Huete-Ortega M, Komlodi T, Pranger F, Gnaiger E (2018) High-resolution respirometry: new perspectives for the study of microalgae bioenergetics and applications in biotechnology. AlgaEurope2018.
Gnaiger 2018 AussieMit	2018	Komlodi Timea, Sobotka Ondrej, Doerrier Carolina, Gnaiger Erich (2018) Mitochondrial H₂O₂ production is low under tissue normoxia but high at in-vitro air-level oxygen pressure - comparison of LEAK and OXPHOS states. AussieMit 2018 Melbourne AU.
Ravasz 2018 Abstract The evolving concept of mitochondria	2018	Vast pools of endogenous quinones sustain NADH oxidation by Complex I during anoxia, supporting substrate-level phosphorylation in mouse liver mitochondria.
Huete-Ortega 2018 MiPschool Tromso E2	2018	High-resolution respirometry: new perspectives for the study of bioenergetics in algae and plants.
Sobotka 2018 MiP2018	2018	Measurement of ROS production under hypoxia and unexpected methodological pitfalls of Amplex UltraRed assay.
Komlodi 2018b EBEC2018	2018	Endogenous quinones sustain NADH oxidation by Complex I during anoxia, supporting substrate-level phosphorylation in mouse liver mitochondria.
Pereira da Silva Grilo da Silva 2018 MiP2018	2018	The unspecific effect of etomoxir on mitochondrial respiration.
Komlodi 2018 EBEC2018	2018	Electron supply to the Q-junction: assessment of mitochondrial respiration, H₂O₂ flux and the redox state of the Q-pool.
Chang 2018 Life Sciences Meeting 2018 Innsbruck AT	2018	pH dependence of mitochondrial respiration and H₂O₂ production in oral cancer cells – a pilot study.
Komlodi 2017 MiP2017	2017	H₂O₂ production under hypoxia in brain and heart mitochondria: does O₂ concentration matter?
Komlodi 2017 MiPschool Obergurgl	2017	Electron pressure exerted by convergent succinate- and glycerophosphate-pathways to the Q-junction regulate reversed electron transfer to Complex I and H₂O₂ production.
Sobotka 2017 MiPschool Obergurgl	2017	Reference protocols for ROS production measurements.
Komlodi 2017 Abstract MITOEAGLE Barcelona	2017	Succinate dehydrogenase regulation via oxaloacetate in brain mitochondria.
Komlodi 2016 Abstract IOC116	2016	Komlodi T, Geibl F, Sassani M, Adam-Vizi V, Tretter L (2016) The effect of ΔΨ_mt and ΔpH on mitochondrial reactive oxygen species production - A comparative study using mitochondria isolated from different mammalian tissues. Mitochondr Physiol Network 21.11
Komlodi 2014 Abstract MiP2014	2014	Methylenblue, an enhancer of mitochondrial substrate-level phosphorylation.
Meszaros 2014 Abstract MiP2014	2014	Methodological aspects of assessing mitochondrial function in small intestinal mucosal samples of rats and guinea pigs.
Tretter 2013 Abstract MiP2013	2013	Tretter L, Komlódi T, Ádám-Vizi V (2013) The effects of methylmalonic acid on alpha-ketoglutarate supported oxidation in isolated brain, heart and liver mitochondria. Mitochondr Physiol Network 18.08.