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

Template NextGen-O2k.jpg
Name Komlodi Timea, PharmD,PhD

ORCID ID

Institution
KomlodiT.JPG
Department of Medical 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 [email protected]
Weblink
O2k-Network Lab AT Innsbruck Oroboros, HU Budapest Tretter L


Bioenergetics Communications

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

MitoEAGLE Short-Term Scientific Mission

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

O2k-Network

Timea Komlòdi : Visiting scientist at the Oroboros O2k-Laboratory

  • 2016, November 21 to 28


Labels: Field of research: Basic 



Publications

 PublishedReference
Komlodi 2021 BEC AmR-O2BEC 2021.4Komlódi T, Sobotka O, Gnaiger E (2021) Facts and artefacts on the oxygen dependence of hydrogen peroxide production using Amplex UltraRed. https://doi.org/10.26124/bec:2021-0004
Komlodi 2021 BEC QBEC 2021.3Komlódi 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. https://doi.org/10.26124/bec:2021-0003
BEC 2020.1 doi10.26124bec2020-0001.v1BEC 2020.1Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. https://doi.org/10.26124/bec:2020-0001.v1
Donnelly 2022 MitoFit Hypoxia2022-07-15Donnelly C, Schmitt S, Cecatto C, Cardoso LHD, Komlodi T, Place N, Kayser B, Gnaiger E (2022) The ABC of hypoxia – what is the norm. https://doi.org/10.26124/mitofit:2022-0025.v2
Komlodi 2022 MitoFit2022-04-12Komlódi T, Tretter L (2022) The protonmotive force – not merely membrane potential. https://doi.org/10.26124/mitofit:2022-0012
Pallag 2022 MitoFit Proline2022-03-07Pallag G, Nazarian S, Ravasz D, Bui D, Komlódi T, Doerrier C, Gnaiger E, Seyfried TN, Chinopoulos C (2022) Proline oxidation leading to high electron flow through reduction of ubiquinone supports ATP production by F1FO-ATPase in mitochondria with inhibited Complex I. https://doi.org/10.26124/mitofit:2022-0001.v3 - 2022-05-04 published in https://doi.org/10.3390/ijms23095111
Fischer 2022 Metabolites2022Fischer 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
Fischer 2021 Antioxidants2021Fischer 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
Mikulas 2020 Materials2020Mikulás 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.
Komlodi 2018 J Bioenerg Biomembr2018Komlódi 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
Mikulas 2018 Dent Mater2018Mikulás 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 2018 Methods Mol Biol2018Komlodi 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.
Komlodi 2017 Neuropharmacology2017Komlódi 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 Physiol2016Koncsos 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

 PublishedReference
Pallag 2022 Abstract Bioblast2022P06.
Pallag Gergely
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«
Donnelly 2022 Abstract Bioblast20222.1. «10+5»
Donnelly Chris
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« »Watch the presentation«
Cardoso 2022 Q10 Hamburg2022Cardoso 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 Abstract Bioblast20223.1. «10+5»
Komlodi Timea
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« »Watch the presentation«
Komlodi 2022 Q10 Hamburg2022Komlodi 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.
Cardoso 2022 ESCI Bari2022
Luiza Cardoso
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. 56th Annual Scientific Meeting of the European Society for Clinical Investigation.
Garcia-Roves 2022 Abstract Bioblast20224.4. «10+5»
Pablo Garcia-Roves
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 »Watch the presentation«
Cardoso 2022a EBEC2022
Luiza Cardoso
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.
Cardoso 2022 Abstract Bioblast20224.3. «10+5»
Luiza Cardoso
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 »Watch the presentation«
Ravasz 2019 Abstract IOC1412019Ravasz 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 ESCI20192019Silva 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?
Silva 2019 MiPschool Coimbra2019
Filomena Pereira da Silva Grilo da Silva
Off-target effects of etomoxir on mitochondrial Complex I.
Komlodi 2018 EBEC20182018Electron supply to the Q-junction: assessment of mitochondrial respiration, H2O2 flux and the redox state of the Q-pool.
Gnaiger 2018 AussieMit2018Komlodi 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.
Pereira da Silva Grilo da Silva 2018 MiP20182018
Filomena Pereira da Silva Grilo da Silva
The unspecific effect of etomoxir on mitochondrial respiration.
Komlodi 2018 AussieMit2018Komlodi 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.
Komlodi 2018b EBEC20182018Endogenous quinones sustain NADH oxidation by Complex I during anoxia, supporting substrate-level phosphorylation in mouse liver mitochondria.
Huete-Ortega 2018 AlgaEurope20182018Huete-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.
Sobotka 2018 MiP20182018
Ondrej Sobotka
Measurement of ROS production under hypoxia and unexpected methodological pitfalls of Amplex UltraRed assay.
Huete-Ortega 2018 MiPschool Tromso E22018High-resolution respirometry: new perspectives for the study of bioenergetics in algae and plants.
Chang 2018 Life Sciences Meeting 2018 Innsbruck AT2018pH dependence of mitochondrial respiration and H2O2 production in oral cancer cells – a pilot study.
Ravasz 2018 Abstract The evolving concept of mitochondria2018Vast pools of endogenous quinones sustain NADH oxidation by Complex I during anoxia, supporting substrate-level phosphorylation in mouse liver mitochondria.
Komlodi 2017 Abstract MITOEAGLE Barcelona2017
COST Action MitoEAGLE
Succinate dehydrogenase regulation via oxaloacetate in brain mitochondria.
Sobotka 2017 MiPschool Obergurgl2017
Ondrej Sobotka
Reference protocols for ROS production measurements.
Komlodi 2017 MiPschool Obergurgl2017
Timea Komlodi
Electron pressure exerted by convergent succinate- and glycerophosphate-pathways to the Q-junction regulate reversed electron transfer to Complex I and H2O2 production.
Komlodi 2017 MiP20172017
Timea Komlodi
H2O2 production under hypoxia in brain and heart mitochondria: does O2 concentration matter?
Komlodi 2016 Abstract IOC1162016Komlodi T, Geibl F, Sassani M, Adam-Vizi V, Tretter L (2016) The effect of ΔΨmt and ΔpH on mitochondrial reactive oxygen species production - A comparative study using mitochondria isolated from different mammalian tissues. Mitochondr Physiol Network 21.11
Meszaros 2014 Abstract MiP20142014Methodological aspects of assessing mitochondrial function in small intestinal mucosal samples of rats and guinea pigs.
Komlodi 2014 Abstract MiP20142014Methylenblue, an enhancer of mitochondrial substrate-level phosphorylation.
Tretter 2013 Abstract MiP20132013Tretter 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.