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  1. Artikel ; Online: MOTS-c Serum Concentration Positively Correlates with Lower-Body Muscle Strength and Is Not Related to Maximal Oxygen Uptake-A Preliminary Study.

    Domin, Remigiusz / Pytka, Michał / Żołyński, Mikołaj / Niziński, Jan / Rucinski, Marcin / Guzik, Przemysław / Zieliński, Jacek / Ruchała, Marek

    International journal of molecular sciences

    2023  Band 24, Heft 19

    Abstract: The mitochondrial open reading frame of 12S rRNA-c (MOTS-c) is a mitochondrial-derived peptide that regulates the nuclear genome during stressful conditions such as hypoxia, which is typical of exercise and training. We aim to mainly investigate the ... ...

    Abstract The mitochondrial open reading frame of 12S rRNA-c (MOTS-c) is a mitochondrial-derived peptide that regulates the nuclear genome during stressful conditions such as hypoxia, which is typical of exercise and training. We aim to mainly investigate the relationship between serum MOTS-c concentration and muscle strength parameters measured during the countermovement jump test with oxygen consumption (VO2) measured during the cardiopulmonary exercise test to exhaustion. Physically active healthy volunteers (17 male, three female, median age 30 years), not involved in any regular exercise program or participating in any sports competitions, performed five consecutive countermovement jump tests and cardiopulmonary exercise tests until maximal exhaustion and underwent a body composition assessment by means of bioelectrical impedance analysis, and had serum MOTS-c concentration measured at rest. Serum MOTS-c concentration was positively correlated with the average power and average and maximal force of the jumps, both overall muscle mass and leg muscle mass, but not with body fat percentage. There was no correlation with peak VO2. A higher serum MOTS-c concentration is associated with greater muscle mass, force, and power generated during jumping in healthy individuals but not exercise capacity reflected by peak VO2. More studies are needed to better understand the physiological and clinical values of these findings and why MOTS-c is better associated with measures of muscle strength and not endurance in physically active people.
    Mesh-Begriff(e) Humans ; Male ; Female ; Adult ; Muscle Strength/physiology ; Exercise/physiology ; Sports ; Exercise Test ; Muscle, Skeletal ; Muscular Diseases ; Oxygen
    Chemische Substanzen Oxygen (S88TT14065)
    Sprache Englisch
    Erscheinungsdatum 2023-10-06
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241914951
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel: Effect of COVID-19 on Blood Pressure Profile and Oxygen Pulse during and after the Cardiopulmonary Exercise Test in Healthy Adults.

    Miętkiewska-Szwacka, Kamila / Domin, Remigiusz / Kwissa, Małgorzata / Żołyński, Mikołaj / Niziński, Jan / Turska, Elżbieta / Cymerys, Maciej

    Journal of clinical medicine

    2023  Band 12, Heft 13

    Abstract: Several reports have shown the impact of COVID-19 history on exercise capacity. This study compared the blood pressure (BP) response and oxygen pulse ( ... ...

    Abstract Several reports have shown the impact of COVID-19 history on exercise capacity. This study compared the blood pressure (BP) response and oxygen pulse (O
    Sprache Englisch
    Erscheinungsdatum 2023-07-04
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm12134483
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: ATPase Inhibitory Factor 1-A Novel Marker of Cellular Fitness and Exercise Capacity?

    Domin, Remigiusz / Pytka, Michał / Niziński, Jan / Żołyński, Mikołaj / Zybek-Kocik, Ariadna / Wrotkowska, Elżbieta / Zieliński, Jacek / Guzik, Przemysław / Ruchała, Marek

    International journal of molecular sciences

    2022  Band 23, Heft 23

    Abstract: ATPase inhibitory factor 1 is a myokine inhibiting the hydrolytic activity of mitochondrial adenosine triphosphate synthase and ecto-F1-ATPase on the surface of many cells. IF1 affects ATP metabolism in mitochondria and the extracellular space and ... ...

    Abstract ATPase inhibitory factor 1 is a myokine inhibiting the hydrolytic activity of mitochondrial adenosine triphosphate synthase and ecto-F1-ATPase on the surface of many cells. IF1 affects ATP metabolism in mitochondria and the extracellular space and upregulates glucose uptake in myocytes; these processes are essential in physical activity. It is unknown whether the IF1 serum concentration is associated with exercise capacity. This study explored the association between resting IF1 serum concentration and exercise capacity indices in healthy people. IF1 serum concentration was measured in samples collected at rest in 97 healthy amateur cyclists. Exercise capacity was assessed on a bike ergometer at the successive stages of the progressive cardiopulmonary exercise test (CPET). IF1 serum concentration was negatively and significantly correlated with oxygen consumption, oxygen pulse, and load at various CPET stages. A better exercise capacity was associated with lower circulating IF1. IF1 may reflect better cellular/mitochondrial energetic fitness, but there is uncertainty regarding how IF1 is released into the intravascular space. We speculate that lower IF1 concentration may reflect a better cellular/mitochondrial integrity, as this protein is bound more strongly with ATPases in mitochondria and cellular surfaces in people with higher exercise capacity.
    Mesh-Begriff(e) Humans ; Adenosine Triphosphate/metabolism ; Exercise ; Exercise Tolerance ; Mitochondrial Proteins/metabolism ; Proteins/metabolism ; Proton-Translocating ATPases/metabolism ; ATPase Inhibitory Protein
    Chemische Substanzen Adenosine Triphosphate (8L70Q75FXE) ; Mitochondrial Proteins ; Proteins ; Proton-Translocating ATPases (EC 3.6.3.14)
    Sprache Englisch
    Erscheinungsdatum 2022-12-04
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms232315303
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Non-invasive in vivo human model of post-ischaemic skin preconditioning by measurement of flow-mediated 460-nm autofluorescence.

    Nizinski, Jan / Filberek, Piotr / Sibrecht, Greta / Krauze, Tomasz / Zielinski, Jacek / Piskorski, Jaroslaw / Wykretowicz, Andrzej / Guzik, Przemyslaw

    British journal of clinical pharmacology

    2021  Band 87, Heft 11, Seite(n) 4283–4292

    Abstract: Aims: Transient ischaemia and reperfusion (TIAR) induce early ischaemic preconditioning (IPC) in different tissues and organs, including the skin. IPC protects tissues by modifying the mitochondrial function and decreasing the amount of the reduced form ...

    Abstract Aims: Transient ischaemia and reperfusion (TIAR) induce early ischaemic preconditioning (IPC) in different tissues and organs, including the skin. IPC protects tissues by modifying the mitochondrial function and decreasing the amount of the reduced form of nicotinamide adenine dinucleotide (NADH). Skin 460-nm autofluorescence is proportional to the NADH content and can be non-invasively measured during TIAR. We propose a non-invasive in vivo human model of skin IPC for studying the effects of repeated TIARs on the NADH content.
    Methods: Fifty-one apparently healthy volunteers (36 women) underwent three 100-second forearm ischaemia episodes induced by inflation of brachial pressure cuff to the pressure of 60 mmHg above systolic blood pressure, followed by 500-second long reperfusion episodes. Changes in skin NADH content were measured using 460-nm fluorescence before and during each of the three TIARs.
    Results: The first two TIARs caused a significant reduction in the skin NADH content before (P = .0065) and during the third ischaemia (P = .0011) and reperfusion (P = .0003) up to 3.0%. During the third TIAR, the increase in skin NADH was 20% lower than during the first ischaemia (P = .0474).
    Conclusions: The measurement of the 460-nm fluorescence during repeated TIARs allows for a non-invasive in vivo investigation of human skin IPC. Although IPC reduces the overall NADH skin content, the most noticeable NADH reduction appears during ischaemia after earlier TIARs. Studying the skin model of IPC may provide new avenues for in vivo physiological, clinical and pharmacological research on mitochondrial metabolism.
    Mesh-Begriff(e) Female ; Forearm ; Humans ; Ischemia ; Ischemic Preconditioning
    Sprache Englisch
    Erscheinungsdatum 2021-04-21
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 188974-6
    ISSN 1365-2125 ; 0306-5251 ; 0264-3774
    ISSN (online) 1365-2125
    ISSN 0306-5251 ; 0264-3774
    DOI 10.1111/bcp.14845
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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