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  1. Conference proceedings: Effect of the addition of dried grape marc on the fermentative characteristic of a concentrated standard

    Barraso, C. / Carracedo, V. / Lopez, M. M. / Pascual, M. R. / Rodriguez, P. / Blanco Alibes M. / Abecia Martinez A. / Bernues Jal A. / Calvo Lacosta J. H. / Latorre Gorriz M. A. / Lobon Ascaso S. / Martin Collado D. / Palacio Liesa J. / Ripoll Garcia G. (Eds.)

    2019  , Page(s) 140–142

    Abstract: The aim of this study was to determine the effect of the addiction of 5% of grape marc rich ... The results show that the addition of grape marc reduces the gas production, but the models do not detect ... faeces from sheep and the substrate was the mixtures of barley and grape marcs. The kinetics ...

    Title variant Efecto de la adicion de orujo de uva desecado a un concentrado tipo sobre la produccion de gas in vitro
    Institution Centro de Investigaciones Cientificas y Tecnologicas de Extremadura, Finca La Orden-Valdesequera, CICYTEX, Badajoz, Spain
    Event/congress Proceedings of the XVIII Jornadas sobre Produccion Animal, Zaragoza, Espana
    Abstract The aim of this study was to determine the effect of the addiction of 5% of grape marc rich in tannins (Graciano and Montúa varieties) in a standard concentrate based on barley on in vitro gas production. The in vitro fermentation was carried out in glass syringes, the source of inoculum was fresh faeces from sheep and the substrate was the mixtures of barley and grape marcs. The kinetics of gas production was studied according the models suggested by Orskov y Mcdonald (1979) y McDonald (1981). The results show that the addition of grape marc reduces the gas production, but the models do not detect differences until 12 h of fermentation.
    Language Spanish ; English
    Document type Conference proceedings
    Database Viticulture and Oenology Abstracts

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  2. Conference proceedings: Evaluation the differents type of silage grape marc by technique production gas in vitro

    Barraso, C. / Hernadez, T. / Lopez, M. M. / Chaso, M. A. / Rodriguez, P. / Blanco Alibes M. / Abecia Martinez A. / Bernues Jal A. / Calvo Lacosta J. H. / Latorre Gorriz M. A. / Lobon Ascaso S. / Martin Collado D. / Palacio Liesa J. / Ripoll Garcia G. (Eds.)

    2019  , Page(s) 263–265

    Abstract: ... fermentation of four varieties of grape marcs (red varieties: Graciano, Merlot. White varieties: Pardilla ... faeces from sheeps and the substrates were the varieties of grape marcs. The kinetics of gas production ... by specific detector of methane gas. The results obtained indicate that the different varieties of grape marcs ...

    Title variant Evaluacion de distintos tipos de ensilado de orujo de uva mediante la tecnica de produccion de gas in vitro.
    Institution Centro de Investigaciones Cientificas y Tecnologicas de Extremadura, Finca La Orden-Valdesequera, CICYTEX, Spain
    Event/congress Proceedings of the XVIII Jornadas sobre Produccion Animal, Zaragoza, Espana
    Abstract The aim of this study was to determine the effect on in vitro gas and methane production fermentation of four varieties of grape marcs (red varieties: Graciano, Merlot. White varieties: Pardilla, Montúa). The in vitro fermentation was carried out in glass syringes. The source of inoculums was fresh faeces from sheeps and the substrates were the varieties of grape marcs. The kinetics of gas production was studied according the model suggested by McDonald (1981) and the methane was determined by specific detector of methane gas. The results obtained indicate that the different varieties of grape marcs have different gas production kinetics, finding the most differences in the first 12 hours. By the other hand, the red varieties produce less methane.
    Language Spanish ; English
    Document type Conference proceedings
    Database Viticulture and Oenology Abstracts

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  3. Article ; Online: The goodies of chelated fat: iron-regulated lipid droplet biogenesis precedes and preserves mitophagy.

    Liesa, Marc

    The EMBO journal

    2022  Volume 41, Issue 10, Page(s) e111238

    Abstract: The role of iron-regulated mitophagy in lipid metabolism is unclear. Recent work by Long, Sanchez-Martinez et al (2022) shows that iron chelation induces a primary change in lipid metabolism that promotes fat accumulation and precedes mitophagy. ...

    Abstract The role of iron-regulated mitophagy in lipid metabolism is unclear. Recent work by Long, Sanchez-Martinez et al (2022) shows that iron chelation induces a primary change in lipid metabolism that promotes fat accumulation and precedes mitophagy.
    MeSH term(s) Iron ; Lipid Droplets ; Lipid Metabolism ; Mitophagy
    Chemical Substances Iron (E1UOL152H7)
    Language English
    Publishing date 2022-04-22
    Publishing country England
    Document type News
    ZDB-ID 586044-1
    ISSN 1460-2075 ; 0261-4189
    ISSN (online) 1460-2075
    ISSN 0261-4189
    DOI 10.15252/embj.2022111238
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1808: Show issues Location:
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    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 100: Show issues

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  4. Article: Why does a mitochondrion need its individual cristae to be functionally autonomous?

    Liesa, Marc

    Molecular & cellular oncology

    2020  Volume 7, Issue 2, Page(s) 1705119

    Abstract: We demonstrated that individual cristae in one mitochondrion function as autonomous electrochemical units, with this autonomy being maintained by cristae junction modulators. Here, I will summarize our novel findings, discuss the advantages of cristae ... ...

    Abstract We demonstrated that individual cristae in one mitochondrion function as autonomous electrochemical units, with this autonomy being maintained by cristae junction modulators. Here, I will summarize our novel findings, discuss the advantages of cristae insulation and reconcile this newly characterized cristae autonomy with previous studies showing coordinated cristae function.
    Language English
    Publishing date 2020-01-10
    Publishing country United States
    Document type Journal Article
    ISSN 2372-3556
    ISSN 2372-3556
    DOI 10.1080/23723556.2019.1705119
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  5. Article ; Online: Quantifying mitochondrial redox and bilirubin content in intact primary hepatocytes of obese mice using fluorescent reporters.

    Belmas, Thomas / Liesa, Marc / Shum, Michaël

    STAR protocols

    2023  Volume 4, Issue 3, Page(s) 102408

    Abstract: Assessing the physiological role of ... ...

    Abstract Assessing the physiological role of H
    MeSH term(s) Animals ; Mice ; Mice, Obese ; Hydrogen Peroxide ; Bilirubin ; Green Fluorescent Proteins/genetics ; Green Fluorescent Proteins/metabolism ; Oxidation-Reduction ; Coloring Agents
    Chemical Substances Hydrogen Peroxide (BBX060AN9V) ; Bilirubin (RFM9X3LJ49) ; Green Fluorescent Proteins (147336-22-9) ; Coloring Agents
    Language English
    Publishing date 2023-07-01
    Publishing country United States
    Document type Journal Article
    ISSN 2666-1667
    ISSN (online) 2666-1667
    DOI 10.1016/j.xpro.2023.102408
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Quantifying mitochondrial redox and bilirubin content in intact primary hepatocytes of obese mice using fluorescent reporters

    Thomas Belmas / Marc Liesa / Michaël Shum

    STAR Protocols, Vol 4, Iss 3, Pp 102408- (2023)

    2023  

    Abstract: Summary: Assessing the physiological role of H2O2 requires sensitive techniques to quantify H2O2 and antioxidants in live cells. Here, we present a protocol to assess the mitochondrial redox state and unconjugated bilirubin levels in intact live primary ... ...

    Abstract Summary: Assessing the physiological role of H2O2 requires sensitive techniques to quantify H2O2 and antioxidants in live cells. Here, we present a protocol to assess the mitochondrial redox state and unconjugated bilirubin levels in intact live primary hepatocytes from obese mice. We described steps to quantify H2O2, GSSG/GSH, and bilirubin content in the mitochondrial matrix and the cytosol using the fluorescent reporters roGFP2-ORP1, GRX1-roGFP2, and UnaG, respectively. We detail hepatocyte isolation, plating, and transduction and live-cell imaging using a high-content imaging reader.For complete details on the use and execution of this protocol, please refer to Shum et al.1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
    Keywords Cell Biology ; Metabolism ; Molecular Biology ; Science (General) ; Q1-390
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Measuring Mitochondrial Uncoupling in Mouse Primary Brown Adipocytes Differentiated Ex Vivo.

    Veliova, Michaela / Tol, Marcus J / Tontonoz, Peter / Shirihai, Orian S / Liesa, Marc

    Methods in molecular biology (Clifton, N.J.)

    2023  Volume 2662, Page(s) 53–65

    Abstract: Measuring the mitochondrial respiratory capacity of brown adipocytes ex vivo is an essential approach to understand the cell-autonomous regulators of mitochondrial uncoupling in brown adipose tissue. Here, we describe two protocols to isolate brown ... ...

    Abstract Measuring the mitochondrial respiratory capacity of brown adipocytes ex vivo is an essential approach to understand the cell-autonomous regulators of mitochondrial uncoupling in brown adipose tissue. Here, we describe two protocols to isolate brown preadipocytes from mice, their ex vivo differentiation to mature brown adipocytes and the quantification of their mitochondrial uncoupling capacity by respirometry.
    MeSH term(s) Mice ; Animals ; Adipocytes, Brown ; Mitochondria/metabolism ; Cell Differentiation ; Adipose Tissue, Brown ; Uncoupling Protein 1/genetics ; Uncoupling Protein 1/metabolism ; Mitochondrial Proteins/metabolism
    Chemical Substances Uncoupling Protein 1 ; Mitochondrial Proteins
    Language English
    Publishing date 2023-04-19
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-3167-6_5
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  8. Article ; Online: The mitochondrial biliverdin exporter ABCB10 in hepatocytes mitigates neutrophilic inflammation in alcoholic hepatitis.

    Gutierrez, Vincent / Kim-Vasquez, Doyeon / Shum, Michael / Yang, Qihong / Dikeman, Dante / Louie, Stan G / Shirihai, Orian S / Tsukamoto, Hidekazu / Liesa, Marc

    Redox biology

    2024  Volume 70, Page(s) 103052

    Abstract: Acute liver failure caused by alcoholic hepatitis (AH) is only effectively treated with liver transplantation. Livers of patients with AH show a unique molecular signature characterized by defective hepatocellular redox metabolism, concurrent to hepatic ... ...

    Abstract Acute liver failure caused by alcoholic hepatitis (AH) is only effectively treated with liver transplantation. Livers of patients with AH show a unique molecular signature characterized by defective hepatocellular redox metabolism, concurrent to hepatic infiltration of neutrophils that express myeloperoxidase (MPO) and form neutrophil extracellular traps (NETs). Exacerbated NET formation and MPO activity contribute to liver damage in mice with AH and predicts poor prognosis in AH patients. The identification of pathways that maladaptively exacerbate neutrophilic activity in liver could inform of novel therapeutic approaches to treat AH. Whether the redox defects of hepatocytes in AH directly exacerbate neutrophilic inflammation and NET formation is unclear. Here we identify that the protein content of the mitochondrial biliverdin exporter ABCB10, which increases hepatocyte-autonomous synthesis of the ROS-scavenger bilirubin, is decreased in livers from humans and mice with AH. Increasing ABCB10 expression selectively in hepatocytes of mice with AH is sufficient to decrease MPO gene expression and histone H3 citrullination, a specific marker of NET formation. These anti-inflammatory effects can be explained by ABCB10 function reducing ROS-mediated actions in liver. Accordingly, ABCB10 gain-of-function selectively increased the mitochondrial GSH/GSSG ratio and decreased hepatic 4-HNE protein adducts, without elevating mitochondrial fat expenditure capacity, nor mitigating steatosis and hepatocyte death. Thus, our study supports that ABCB10 function regulating ROS-mediated actions within surviving hepatocytes mitigates the maladaptive activation of infiltrated neutrophils in AH. Consequently, ABCB10 gain-of-function in human hepatocytes could potentially decrease acute liver failure by decreasing the inflammatory flare caused by excessive neutrophil activity.
    MeSH term(s) Humans ; Animals ; Mice ; Hepatitis, Alcoholic/genetics ; Hepatitis, Alcoholic/metabolism ; Biliverdine/metabolism ; Reactive Oxygen Species/metabolism ; Hepatocytes/metabolism ; Liver/metabolism ; Inflammation/genetics ; Inflammation/metabolism ; Histones/metabolism ; Liver Failure, Acute/metabolism ; ATP-Binding Cassette Transporters/metabolism
    Chemical Substances Biliverdine (O9MIA842K9) ; Reactive Oxygen Species ; Histones ; ABCB10 protein, human ; ATP-Binding Cassette Transporters
    Language English
    Publishing date 2024-01-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2701011-9
    ISSN 2213-2317 ; 2213-2317
    ISSN (online) 2213-2317
    ISSN 2213-2317
    DOI 10.1016/j.redox.2024.103052
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  9. Article ; Online: Determining Basal Energy Expenditure and the Capacity of Thermogenic Adipocytes to Expend Energy in Obese Mice.

    Shum, Michael / Zhou, Zhiqiang / Liesa, Marc

    Journal of visualized experiments : JoVE

    2021  , Issue 177

    Abstract: Energy expenditure measurements are necessary to understand how changes in metabolism can lead to obesity. Basal energy expenditure can be determined in mice by measuring whole-body oxygen consumption, CO2 production, and physical activity using ... ...

    Abstract Energy expenditure measurements are necessary to understand how changes in metabolism can lead to obesity. Basal energy expenditure can be determined in mice by measuring whole-body oxygen consumption, CO2 production, and physical activity using metabolic cages. Thermogenic brown/beige adipocytes (BA) contribute significantly to rodent energy expenditure, particularly at low ambient temperatures. Here, measurements of basal energy expenditure and total BA capacity to expend energy in obese mice are described in two detailed protocols: the first explaining how to set up the assay to measure basal energy expenditure using analysis of covariance (ANCOVA), a necessary analysis given that energy expenditure co-varies with body mass. The second protocol describes how to measure BA energy expenditure capacity in vivo in mice. This procedure involves anesthesia, needed to limit expenditure caused by physical activity, followed by the injection of beta3-adrenergic agonist, CL-316,243, which activates energy expenditure in BA. These two protocols and their limitations are described in sufficient detail to allow a successful first experiment.
    MeSH term(s) Adipocytes, Brown/metabolism ; Adipose Tissue, Brown/metabolism ; Animals ; Energy Metabolism ; Mice ; Mice, Obese ; Obesity/metabolism ; Thermogenesis/physiology
    Language English
    Publishing date 2021-11-11
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Video-Audio Media
    ZDB-ID 2259946-0
    ISSN 1940-087X ; 1940-087X
    ISSN (online) 1940-087X
    ISSN 1940-087X
    DOI 10.3791/63066
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  10. Article ; Online: Mitochondrial adaptation in obesity is a ClpPicated business.

    Liesa, Marc / Shirihai, Orian S

    EMBO reports

    2018  Volume 19, Issue 6

    MeSH term(s) Adaptation, Physiological ; Endopeptidase Clp ; Humans ; Metabolic Syndrome ; Mitochondria ; Obesity ; Thermogenesis
    Chemical Substances ClpP protein, human (EC 3.4.21.92) ; Endopeptidase Clp (EC 3.4.21.92)
    Language English
    Publishing date 2018-05-22
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 2020896-0
    ISSN 1469-3178 ; 1469-221X
    ISSN (online) 1469-3178
    ISSN 1469-221X
    DOI 10.15252/embr.201846295
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5433: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (2.OG)
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    Zs.MG 41: Show issues

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