LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 77

Search options

  1. Article ; Online: The mitochondrial calcium uniporter in the heart: energetics and beyond.

    Kwong, Jennifer Q

    The Journal of physiology

    2017  Volume 595, Issue 12, Page(s) 3743–3751

    Abstract: ... ...

    Abstract Ca
    MeSH term(s) Animals ; Calcium/metabolism ; Calcium Channels/metabolism ; Calcium Signaling/physiology ; Cell Death/physiology ; Excitation Contraction Coupling/physiology ; Humans ; Mitochondria, Heart/metabolism ; Mitochondrial Membranes/metabolism ; Myocytes, Cardiac/metabolism ; Ruthenium Red/metabolism
    Chemical Substances Calcium Channels ; mitochondrial calcium uniporter ; Ruthenium Red (11103-72-3) ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2017-02-01
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 3115-x
    ISSN 1469-7793 ; 0022-3751
    ISSN (online) 1469-7793
    ISSN 0022-3751
    DOI 10.1113/JP273059
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Mitochondrial functional resilience after TFAM ablation in the adult heart.

    Ghazal, Nasab / Peoples, Jessica N / Mohiuddin, Tahmina A / Kwong, Jennifer Q

    American journal of physiology. Cell physiology

    2021  Volume 320, Issue 6, Page(s) C929–C942

    Abstract: The nuclear genome-encoded mitochondrial DNA (mtDNA) transcription factor A (TFAM) is indispensable for mitochondrial energy production in the developing and postnatal heart; a similar role for TFAM is inferred in adult heart. Here, we provide evidence ... ...

    Abstract The nuclear genome-encoded mitochondrial DNA (mtDNA) transcription factor A (TFAM) is indispensable for mitochondrial energy production in the developing and postnatal heart; a similar role for TFAM is inferred in adult heart. Here, we provide evidence that challenges this long-standing paradigm. Unexpectedly, conditional
    MeSH term(s) Animals ; DNA Replication/genetics ; DNA, Mitochondrial/genetics ; DNA-Binding Proteins/genetics ; Down-Regulation/genetics ; Electron Transport/genetics ; Female ; Gene Expression Regulation/genetics ; Heart/physiology ; High Mobility Group Proteins/genetics ; Male ; Mice ; Mitochondria/genetics ; Mitochondrial Proteins/genetics ; Myocytes, Cardiac/metabolism ; Transcription Factors/genetics ; Transcription, Genetic/genetics
    Chemical Substances DNA, Mitochondrial ; DNA-Binding Proteins ; High Mobility Group Proteins ; Mitochondrial Proteins ; Tfam protein, mouse ; Transcription Factors
    Language English
    Publishing date 2021-03-24
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 392098-7
    ISSN 1522-1563 ; 0363-6143
    ISSN (online) 1522-1563
    ISSN 0363-6143
    DOI 10.1152/ajpcell.00508.2020
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Sex differences in the involvement of skeletal and cardiac muscles in myopathic

    Foltz, Steven / Wu, Fang / Ghazal, Nasab / Kwong, Jennifer Q / Hartzell, H Criss / Choo, Hyojung J

    American journal of physiology. Cell physiology

    2022  Volume 322, Issue 2, Page(s) C283–C295

    Abstract: Limb-girdle muscular dystrophy R12 (LGMD-R12) is caused by recessive mutations in the Anoctamin-5 gene ( ...

    Abstract Limb-girdle muscular dystrophy R12 (LGMD-R12) is caused by recessive mutations in the Anoctamin-5 gene (
    MeSH term(s) Animals ; Anoctamins/deficiency ; Anoctamins/genetics ; Cardiomyopathies/genetics ; Cardiomyopathies/metabolism ; Cardiomyopathies/pathology ; Cardiomyopathies/physiopathology ; Creatine Kinase/blood ; Exercise Tolerance ; Female ; Humans ; Male ; Mice, Inbred C57BL ; Mice, Knockout ; Muscle Contraction ; Muscle, Skeletal/metabolism ; Muscle, Skeletal/pathology ; Muscle, Skeletal/physiopathology ; Muscular Dystrophies, Limb-Girdle/genetics ; Muscular Dystrophies, Limb-Girdle/metabolism ; Muscular Dystrophies, Limb-Girdle/pathology ; Muscular Dystrophies, Limb-Girdle/physiopathology ; Myocardium/metabolism ; Myocardium/pathology ; Sex Characteristics ; Sex Factors ; Mice
    Chemical Substances ANO5 protein, human ; ANO5 protein, mouse ; Anoctamins ; Creatine Kinase (EC 2.7.3.2)
    Language English
    Publishing date 2022-01-12
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Meta-Analysis ; Research Support, N.I.H., Extramural
    ZDB-ID 392098-7
    ISSN 1522-1563 ; 0363-6143
    ISSN (online) 1522-1563
    ISSN 0363-6143
    DOI 10.1152/ajpcell.00350.2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Mitochondrial citrate carrier SLC25A1 is a dosage-dependent regulator of metabolic reprogramming and morphogenesis in the developing heart.

    Ohanele, Chiemela / Peoples, Jessica N / Karlstaedt, Anja / Geiger, Joshua T / Gayle, Ashley D / Ghazal, Nasab / Sohani, Fateemaa / Brown, Milton E / Davis, Michael E / Porter, George A / Faundez, Victor / Kwong, Jennifer Q

    bioRxiv : the preprint server for biology

    2023  

    Abstract: The developing mammalian heart undergoes an important metabolic shift from glycolysis toward mitochondrial oxidation, such that oxidative phosphorylation defects may present with cardiac abnormalities. Here, we describe a new mechanistic link between ... ...

    Abstract The developing mammalian heart undergoes an important metabolic shift from glycolysis toward mitochondrial oxidation, such that oxidative phosphorylation defects may present with cardiac abnormalities. Here, we describe a new mechanistic link between mitochondria and cardiac morphogenesis, uncovered by studying mice with systemic loss of the mitochondrial citrate carrier SLC25A1.
    Language English
    Publishing date 2023-05-22
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.05.22.541833
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Physiological and pathological roles of the mitochondrial permeability transition pore in the heart.

    Kwong, Jennifer Q / Molkentin, Jeffery D

    Cell metabolism

    2015  Volume 21, Issue 2, Page(s) 206–214

    Abstract: Prolonged mitochondrial permeability transition pore (MPTP) opening results in mitochondrial energetic dysfunction, organelle swelling, rupture, and typically a type of necrotic cell death. However, acute opening of the MPTP has a critical physiologic ... ...

    Abstract Prolonged mitochondrial permeability transition pore (MPTP) opening results in mitochondrial energetic dysfunction, organelle swelling, rupture, and typically a type of necrotic cell death. However, acute opening of the MPTP has a critical physiologic role in regulating mitochondrial Ca(2+) handling and metabolism. Despite the physiological and pathological roles that the MPTP orchestrates, the proteins that comprise the pore itself remain an area of ongoing investigation. Here, we will discuss the molecular composition of the MPTP and its role in regulating cardiac physiology and disease. A better understanding of MPTP structure and function will likely suggest novel cardioprotective therapeutic approaches.
    MeSH term(s) Animals ; Calcium/metabolism ; Heart/physiology ; Humans ; Mitochondria, Heart/metabolism ; Mitochondrial Membrane Transport Proteins/metabolism ; Myocardium/metabolism ; Myocardium/pathology
    Chemical Substances Mitochondrial Membrane Transport Proteins ; mitochondrial permeability transition pore ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2015-02-03
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2176834-1
    ISSN 1932-7420 ; 1550-4131
    ISSN (online) 1932-7420
    ISSN 1550-4131
    DOI 10.1016/j.cmet.2014.12.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Analyses of Mitochondrial Calcium Influx in Isolated Mitochondria and Cultured Cells.

    Maxwell, Joshua T / Tsai, Chin-Hsien / Mohiuddin, Tahmina A / Kwong, Jennifer Q

    Journal of visualized experiments : JoVE

    2018  , Issue 134

    Abstract: ... ...

    Abstract Ca
    MeSH term(s) Animals ; Calcium/metabolism ; Cells, Cultured ; Mice ; Microscopy, Confocal/methods ; Mitochondria/metabolism ; Mitochondria, Heart/metabolism ; Myocytes, Cardiac/metabolism
    Chemical Substances Calcium (SY7Q814VUP)
    Language English
    Publishing date 2018-04-27
    Publishing country United States
    Document type Journal Article ; 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 10.3791/57225
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Loss of the mitochondrial phosphate carrier SLC25A3 induces remodeling of the cardiac mitochondrial protein acylome.

    Peoples, Jessica N / Ghazal, Nasab / Duong, Duc M / Hardin, Katherine R / Manning, Janet R / Seyfried, Nicholas T / Faundez, Victor / Kwong, Jennifer Q

    American journal of physiology. Cell physiology

    2021  Volume 321, Issue 3, Page(s) C519–C534

    Abstract: Mitochondria are recognized as signaling organelles, because under stress, mitochondria can trigger various signaling pathways to coordinate the cell's response. The specific pathway(s) engaged by mitochondria in response to mitochondrial energy defects ... ...

    Abstract Mitochondria are recognized as signaling organelles, because under stress, mitochondria can trigger various signaling pathways to coordinate the cell's response. The specific pathway(s) engaged by mitochondria in response to mitochondrial energy defects in vivo and in high-energy tissues like the heart are not fully understood. Here, we investigated cardiac pathways activated in response to mitochondrial energy dysfunction by studying mice with cardiomyocyte-specific loss of the mitochondrial phosphate carrier (SLC25A3), an established model that develops cardiomyopathy as a result of defective mitochondrial ATP synthesis. Mitochondrial energy dysfunction induced a striking pattern of acylome remodeling, with significantly increased posttranslational acetylation and malonylation. Mass spectrometry-based proteomics further revealed that energy dysfunction-induced remodeling of the acetylome and malonylome preferentially impacts mitochondrial proteins. Acetylation and malonylation modified a highly interconnected interactome of mitochondrial proteins, and both modifications were present on the enzyme isocitrate dehydrogenase 2 (IDH2). Intriguingly, IDH2 activity was enhanced in SLC25A3-deleted mitochondria, and further study of IDH2 sites targeted by both acetylation and malonylation revealed that these modifications can have site-specific and distinct functional effects. Finally, we uncovered a novel cross talk between the two modifications, whereby mitochondrial energy dysfunction-induced acetylation of sirtuin 5 (SIRT5), inhibited its function. Because SIRT5 is a mitochondrial deacylase with demalonylase activity, this finding suggests that acetylation can modulate the malonylome. Together, our results position acylations as an arm of the mitochondrial response to energy dysfunction and suggest a mechanism by which focal disruption to the energy production machinery can have an expanded impact on global mitochondrial function.
    MeSH term(s) Acetylation ; Animals ; Biological Transport ; Cardiomyopathies/genetics ; Cardiomyopathies/metabolism ; Cardiomyopathies/pathology ; Cation Transport Proteins/deficiency ; Cation Transport Proteins/genetics ; Energy Metabolism ; Female ; Gene Regulatory Networks ; Isocitrate Dehydrogenase/genetics ; Isocitrate Dehydrogenase/metabolism ; Male ; Malonates/metabolism ; Mice ; Mice, Knockout ; Mitochondria, Heart/genetics ; Mitochondria, Heart/metabolism ; Mitochondria, Heart/pathology ; Mitochondrial Proteins/deficiency ; Mitochondrial Proteins/genetics ; Models, Molecular ; Myocardium/metabolism ; Myocardium/pathology ; Myocytes, Cardiac/metabolism ; Myocytes, Cardiac/pathology ; Phosphate Transport Proteins/deficiency ; Phosphate Transport Proteins/genetics ; Phosphates ; Protein Conformation ; Protein Interaction Mapping ; Protein Processing, Post-Translational ; Signal Transduction ; Sirtuins/genetics ; Sirtuins/metabolism ; Solute Carrier Proteins/deficiency ; Solute Carrier Proteins/genetics
    Chemical Substances Cation Transport Proteins ; Malonates ; Mitochondrial Proteins ; Phosphate Transport Proteins ; Phosphates ; SIRT5 protein, mouse ; Slc25a3 protein, mouse ; Solute Carrier Proteins ; malonic acid (9KX7ZMG0MK) ; Isocitrate Dehydrogenase (EC 1.1.1.41) ; isocitrate dehydrogenase 2, mouse (EC 1.1.1.41) ; Sirtuins (EC 3.5.1.-)
    Language English
    Publishing date 2021-07-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 392098-7
    ISSN 1522-1563 ; 0363-6143
    ISSN (online) 1522-1563
    ISSN 0363-6143
    DOI 10.1152/ajpcell.00156.2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Mitochondrial dysfunction and oxidative stress in heart disease.

    Peoples, Jessica N / Saraf, Anita / Ghazal, Nasab / Pham, Tyler T / Kwong, Jennifer Q

    Experimental & molecular medicine

    2019  Volume 51, Issue 12, Page(s) 1–13

    Abstract: Beyond their role as a cellular powerhouse, mitochondria are emerging as integral players in molecular signaling and cell fate determination through reactive oxygen species (ROS). While ROS production has historically been portrayed as an unregulated ... ...

    Abstract Beyond their role as a cellular powerhouse, mitochondria are emerging as integral players in molecular signaling and cell fate determination through reactive oxygen species (ROS). While ROS production has historically been portrayed as an unregulated process driving oxidative stress and disease pathology, contemporary studies reveal that ROS also facilitate normal physiology. Mitochondria are especially abundant in cardiac tissue; hence, mitochondrial dysregulation and ROS production are thought to contribute significantly to cardiac pathology. Moreover, there is growing appreciation that medical therapies designed to mediate mitochondrial ROS production can be important strategies to ameliorate cardiac disease. In this review, we highlight evidence from animal models that illustrates the strong connections between mitochondrial ROS and cardiac disease, discuss advancements in the development of mitochondria-targeted antioxidant therapies, and identify challenges faced in bringing such therapies into the clinic.
    MeSH term(s) Animals ; Cardiomyopathies/metabolism ; Heart Diseases/metabolism ; Humans ; Mitochondria/metabolism ; Mitochondrial Diseases/metabolism ; Oxidative Stress/physiology ; Reactive Oxygen Species/metabolism ; Signal Transduction
    Chemical Substances Reactive Oxygen Species
    Language English
    Publishing date 2019-12-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1328915-9
    ISSN 2092-6413 ; 1226-3613 ; 0378-8512
    ISSN (online) 2092-6413
    ISSN 1226-3613 ; 0378-8512
    DOI 10.1038/s12276-019-0355-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Mitochondrial dysfunction and oxidative stress in heart disease

    Jessica N. Peoples / Anita Saraf / Nasab Ghazal / Tyler T. Pham / Jennifer Q. Kwong

    Experimental and Molecular Medicine, Vol 51, Iss 12, Pp 1-

    2019  Volume 13

    Abstract: ... by targeting signaling molecules that cause oxidative stress. Jennifer Kwong at Emory University School ...

    Abstract Heart disease: Signaling a halt to disease progression Heart disease progression could be tackled by targeting signaling molecules that cause oxidative stress. Jennifer Kwong at Emory University School of Medicine in Atlanta, USA, and co-workers reviewed research into the role of mitochondria and their associated signaling molecules in the development of heart disease. Mitochondria are a major source of reactive oxygen species (ROS), signaling molecules involved in muscle contraction and calcium transfer in the heart, but they also destroy ROS to maintain a balance. Disruption to this balance can lead to elevated ROS, causing DNA and cellular damage, triggering disease. Animal trials using drugs to target mitochondrial ROS show promise in limiting heart disease progression. Further research is needed to determine whether this approach will work in humans and which specific heart problems might benefit from such therapies.
    Keywords Medicine ; R ; Biochemistry ; QD415-436
    Language English
    Publishing date 2019-12-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article: Safety and Health Care Use Following COVID-19 Vaccination Among Adults With Rheumatoid Arthritis: A Population-Based Self-Controlled Case Series Analysis.

    Lee, Jennifer J Y / Bernatsky, Sasha / Kwong, Jeffrey C / Li, Qing / Kwok, Timothy S H / Widdifield, Jessica

    The Journal of rheumatology

    2023  

    Abstract: Objective: To determine if coronavirus disease 2019 (COVID-19) vaccines were associated with adverse events of special interest (AESIs) and healthcare use among adults with rheumatoid arthritis (RA).: Methods: Among adults with RA who received at ... ...

    Abstract Objective: To determine if coronavirus disease 2019 (COVID-19) vaccines were associated with adverse events of special interest (AESIs) and healthcare use among adults with rheumatoid arthritis (RA).
    Methods: Among adults with RA who received at least 1 COVID-19 vaccine, a self-controlled case series (SCCS) analysis was conducted to evaluate relative incidence (RI) rates of AESIs (Bell palsy, idiopathic thrombocytopenia, acute disseminated encephalomyelitis, pericarditis/myocarditis, Guillain-Barré syndrome, transverse myelitis, myocardial infarction, anaphylaxis, stroke, deep vein thrombosis, pulmonary embolism, narcolepsy, appendicitis, and disseminated intravascular coagulation) in any 21-day period following vaccination compared to control periods. Secondary outcomes included emergency department (ED) visits, hospitalizations, and rheumatology visits. A matched non-RA comparator group was created and a separate SCCS analysis was conducted. RI ratios (RIRs) were used to compare RA and non-RA groups.
    Results: Among 123,466 patients with RA and 493,864 comparators, the majority received mRNA vaccines. For patients with RA, relative to control periods, AESIs were not increased. ED visits increased after dose 2 (RI 1.06, 95% CI 1.03-1.10) and decreased after dose 3 (RI 0.93, 95% CI 0.89-0.96). Hospitalizations were lower after the first (RI 0.83, 95% CI 0.78-0.88), second (RI 0.86, 95% CI 0.81-0.92), and third (RI 0.89, 95% CI 0.83-0.95) doses. Rheumatology visits increased after dose 1 (RI 1.08, 95% CI 1.07-1.10), and decreased after doses 2 and 3. Relative to comparators, patients with RA had a higher AESI risk after dose 3 (RIR 1.28, 95% CI 1.05-1.56). Patients with RA experienced fewer ED visits (RIR 0.73, 95% CI 0.58-0.90) and hospitalizations (RIR 0.52, 95% CI 0.36-0.75) after dose 4.
    Conclusion: COVID-19 vaccines in patients with RA were not associated with an increase in AESI risk or healthcare use after every dose.
    Language English
    Publishing date 2023-10-01
    Publishing country Canada
    Document type Journal Article
    ZDB-ID 194928-7
    ISSN 1499-2752 ; 0315-162X
    ISSN (online) 1499-2752
    ISSN 0315-162X
    DOI 10.3899/jrheum.2023-0355
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top