LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 34

Search options

  1. Article ; Online: Living myocardial slices: a novel multicellular model for cardiac translational research.

    Perbellini, Filippo / Thum, Thomas

    European heart journal

    2019  Volume 41, Issue 25, Page(s) 2405–2408

    Abstract: Heart function relies on the interplay of several specialized cell types and a precisely regulated network of chemical and mechanical stimuli. Over the last few decades, this complexity has often been undervalued and progress in translational ... ...

    Abstract Heart function relies on the interplay of several specialized cell types and a precisely regulated network of chemical and mechanical stimuli. Over the last few decades, this complexity has often been undervalued and progress in translational cardiovascular research has been significantly hindered by the lack of appropriate research models. The data collected are often oversimplified and these make the translation of results from the laboratory to clinical trials challenging and occasionally misleading. Living myocardial slices are ultrathin (100-400μm) sections of living cardiac tissue that maintain the native multicellularity, architecture, and structure of the heart and can provide information at a cellular/subcellular level. They overcome most of the limitations that affect other in vitro models and they can be prepared from human specimens, proving a clinically relevant multicellular human model for translational cardiovascular research. The publication of a reproducible protocol, and the rapid progress in methodological and technological discoveries which prevent significant structural and functional changes associated with chronic in vitro culture, has overcome the last barrier for the in vitro use of this human multicellular preparations. This technology can bridge the gap between in vitro and in vivo human studies and has the potential to revolutionize translational research approaches.
    MeSH term(s) Cardiovascular Physiological Phenomena ; Heart ; Humans ; Myocardium ; Translational Medical Research
    Language English
    Publishing date 2019-11-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 603098-1
    ISSN 1522-9645 ; 0195-668X
    ISSN (online) 1522-9645
    ISSN 0195-668X
    DOI 10.1093/eurheartj/ehz779
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Non-coding RNAs: emerging players in cardiomyocyte proliferation and cardiac regeneration.

    Abbas, Naisam / Perbellini, Filippo / Thum, Thomas

    Basic research in cardiology

    2020  Volume 115, Issue 5, Page(s) 52

    Abstract: Soon after birth, the regenerative capacity of the mammalian heart is lost, cardiomyocytes withdraw from the cell cycle and demonstrate a minimal proliferation rate. Despite improved treatment and reperfusion strategies, the uncompensated cardiomyocyte ... ...

    Abstract Soon after birth, the regenerative capacity of the mammalian heart is lost, cardiomyocytes withdraw from the cell cycle and demonstrate a minimal proliferation rate. Despite improved treatment and reperfusion strategies, the uncompensated cardiomyocyte loss during injury and disease results in cardiac remodeling and subsequent heart failure. The promising field of regenerative medicine aims to restore both the structure and function of damaged tissue through modulation of cellular processes and regulatory mechanisms involved in cardiac cell cycle arrest to boost cardiomyocyte proliferation. Non-coding RNAs (ncRNAs), such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), and circular RNAs (circRNAs) are functional RNA molecules with no protein-coding function that have been reported to engage in cardiac regeneration and repair. In this review, we summarize the current understanding of both the biological functions and molecular mechanisms of ncRNAs involved in cardiomyocyte proliferation. Furthermore, we discuss their impact on the structure and contractile function of the heart in health and disease and their application for therapeutic interventions.
    MeSH term(s) Animals ; Cell Proliferation ; Humans ; Myocytes, Cardiac/physiology ; RNA, Circular/metabolism ; RNA, Untranslated/physiology ; Regeneration
    Chemical Substances RNA, Circular ; RNA, Untranslated
    Language English
    Publishing date 2020-08-03
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 189755-x
    ISSN 1435-1803 ; 0300-8428 ; 0175-9418
    ISSN (online) 1435-1803
    ISSN 0300-8428 ; 0175-9418
    DOI 10.1007/s00395-020-0816-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Inhibition of miR-21: cardioprotective effects in human failing myocardium ex vivo.

    Abbas, Naisam / Haas, Jonas A / Xiao, Ke / Fuchs, Maximilian / Just, Annette / Pich, Andreas / Perbellini, Filippo / Werlein, Christopher / Ius, Fabio / Ruhparwar, Arjang / Fiedler, Jan / Weber, Natalie / Thum, Thomas

    European heart journal

    2024  

    Language English
    Publishing date 2024-03-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 603098-1
    ISSN 1522-9645 ; 0195-668X
    ISSN (online) 1522-9645
    ISSN 0195-668X
    DOI 10.1093/eurheartj/ehae102
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Myocardial Slices: an Intermediate Complexity Platform for Translational Cardiovascular Research.

    Watson, Samuel A / Terracciano, Cesare M / Perbellini, Filippo

    Cardiovascular drugs and therapy

    2019  Volume 33, Issue 2, Page(s) 239–244

    Abstract: Myocardial slices, also known as "cardiac tissue slices" or "organotypic heart slices," are ultrathin (100-400 μm) slices of living adult ventricular myocardium prepared using a high-precision vibratome. They are a model of intermediate complexity as ... ...

    Abstract Myocardial slices, also known as "cardiac tissue slices" or "organotypic heart slices," are ultrathin (100-400 μm) slices of living adult ventricular myocardium prepared using a high-precision vibratome. They are a model of intermediate complexity as they retain the native multicellularity, architecture, and physiology of the heart, while their thinness ensures adequate oxygen and metabolic substrate diffusion in vitro. Myocardial slices can be produced from a variety of animal models and human biopsies, thus providing a representative human in vitro platform for translational cardiovascular research. In this review, we compare myocardial slices to other in vitro models and highlight some of the unique advantages provided by this platform. Additionally, we discuss the work performed in our laboratory to optimize myocardial slice preparation methodology, which resulted in highly viable myocardial slices from both large and small mammalian hearts with only 2-3% cardiomyocyte damage and preserved structure and function. Applications of myocardial slices span both basic and translational cardiovascular science. Our laboratory has utilized myocardial slices for the investigation of cardiac multicellularity, visualizing 3D collagen distribution and micro/macrovascular networks using tissue clearing protocols and investigating the effects of novel conductive biomaterials on cardiac physiology. Myocardial slices have been widely used for pharmacological testing. Finally, the current challenges and future directions for the technology are discussed.
    MeSH term(s) Animals ; Cell Communication ; Cell Survival ; Humans ; In Vitro Techniques ; Microtomy ; Myocardium/metabolism ; Myocardium/pathology ; Myocytes, Cardiac/drug effects ; Myocytes, Cardiac/metabolism ; Myocytes, Cardiac/pathology ; Tissue Survival ; Translational Research, Biomedical/methods
    Language English
    Publishing date 2019-01-22
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 639068-7
    ISSN 1573-7241 ; 0920-3206
    ISSN (online) 1573-7241
    ISSN 0920-3206
    DOI 10.1007/s10557-019-06853-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Uterine cells-an immunoprivileged cell source for therapy-but are they for everyone?

    Perbellini, Filippo / Carr, Carolyn A

    Journal of molecular and cellular cardiology

    2015  Volume 85, Page(s) 127–130

    MeSH term(s) Adult Stem Cells/immunology ; Adult Stem Cells/transplantation ; Animals ; Female ; Graft Survival ; Heart Diseases/therapy ; Humans ; Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells/immunology ; Regenerative Medicine ; Uterus/cytology
    Language English
    Publishing date 2015-08
    Publishing country England
    Document type Editorial ; Research Support, Non-U.S. Gov't
    ZDB-ID 80157-4
    ISSN 1095-8584 ; 0022-2828
    ISSN (online) 1095-8584
    ISSN 0022-2828
    DOI 10.1016/j.yjmcc.2015.05.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Myocardial slices come to age: an intermediate complexity in vitro cardiac model for translational research.

    Pitoulis, Fotios G / Watson, Samuel A / Perbellini, Filippo / Terracciano, Cesare M

    Cardiovascular research

    2019  Volume 116, Issue 7, Page(s) 1275–1287

    Abstract: Although past decades have witnessed significant reductions in mortality of heart failure together with advances in our understanding of its cellular, molecular, and whole-heart features, a lot of basic cardiac research still fails to translate into ... ...

    Abstract Although past decades have witnessed significant reductions in mortality of heart failure together with advances in our understanding of its cellular, molecular, and whole-heart features, a lot of basic cardiac research still fails to translate into clinical practice. In this review we examine myocardial slices, a novel model in the translational arena. Myocardial slices are living ultra-thin sections of heart tissue. Slices maintain the myocardium's native function (contractility, electrophysiology) and structure (multicellularity, extracellular matrix) and can be prepared from animal and human tissue. The discussion begins with the history and current advances in the model, the different interlaboratory methods of preparation and their potential impact on results. We then contextualize slices' advantages and limitations by comparing it with other cardiac models. Recently, sophisticated methods have enabled slices to be cultured chronically in vitro while preserving the functional and structural phenotype. This is more timely now than ever where chronic physiologically relevant in vitro platforms for assessment of therapeutic strategies are urgently needed. We interrogate the technological developments that have permitted this, their limitations, and future directions. Finally, we look into the general obstacles faced by the translational field, and how implementation of research systems utilizing slices could help in resolving these.
    MeSH term(s) Animals ; Cell Communication ; Humans ; In Vitro Techniques ; Microtomy ; Myocardium/cytology ; Myocardium/metabolism ; Phenotype ; Signal Transduction ; Translational Research, Biomedical
    Language English
    Publishing date 2019-12-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80340-6
    ISSN 1755-3245 ; 0008-6363
    ISSN (online) 1755-3245
    ISSN 0008-6363
    DOI 10.1093/cvr/cvz341
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Heterocellularity and Cellular Cross-Talk in the Cardiovascular System.

    Perbellini, Filippo / Watson, Samuel A / Bardi, Ifigeneia / Terracciano, Cesare M

    Frontiers in cardiovascular medicine

    2018  Volume 5, Page(s) 143

    Abstract: Cellular specialization and interactions with other cell types are the essence of complex multicellular life. The orchestrated function of different cell populations in the heart, in combination with a complex network of intercellular circuits of ... ...

    Abstract Cellular specialization and interactions with other cell types are the essence of complex multicellular life. The orchestrated function of different cell populations in the heart, in combination with a complex network of intercellular circuits of communication, is essential to maintain a healthy heart and its disruption gives rise to pathological conditions. Over the past few years, the development of new biological research tools has facilitated more accurate identification of the cardiac cell populations and their specific roles. This review aims to provide an overview on the significance and contributions of the various cellular components: cardiomyocytes, fibroblasts, endothelial cells, vascular smooth muscle cells, pericytes, and inflammatory cells. It also aims to describe their role in cardiac development, physiology and pathology with a particular focus on the importance of heterocellularity and cellular interaction between these different cell types.
    Language English
    Publishing date 2018-11-01
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2781496-8
    ISSN 2297-055X
    ISSN 2297-055X
    DOI 10.3389/fcvm.2018.00143
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Cardiac t-tubules: where structural plasticity meets functional adaptation.

    Watson, Samuel A / Perbellini, Filippo / Terracciano, Cesare M

    Cardiovascular research

    2016  Volume 112, Issue 1, Page(s) 423–425

    MeSH term(s) Calcium ; Heart Ventricles ; Homeostasis ; Myocytes, Cardiac
    Chemical Substances Calcium (SY7Q814VUP)
    Language English
    Publishing date 2016-09-19
    Publishing country England
    Document type Editorial ; Comment
    ZDB-ID 80340-6
    ISSN 1755-3245 ; 0008-6363
    ISSN (online) 1755-3245
    ISSN 0008-6363
    DOI 10.1093/cvr/cvw198
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Preparation of viable adult ventricular myocardial slices from large and small mammals.

    Watson, Samuel A / Scigliano, Martina / Bardi, Ifigeneia / Ascione, Raimondo / Terracciano, Cesare M / Perbellini, Filippo

    Nature protocols

    2017  Volume 12, Issue 12, Page(s) 2623–2639

    Abstract: This protocol describes the preparation of highly viable adult ventricular myocardial slices from the hearts of small and large mammals, including rodents, pigs, dogs and humans. Adult ventricular myocardial slices are 100- to 400-μm-thick slices of ... ...

    Abstract This protocol describes the preparation of highly viable adult ventricular myocardial slices from the hearts of small and large mammals, including rodents, pigs, dogs and humans. Adult ventricular myocardial slices are 100- to 400-μm-thick slices of living myocardium that retain the native multicellularity, architecture and physiology of the heart. This protocol provides a list of the equipment and reagents required alongside a detailed description of the methodology for heart explantation, tissue preparation, slicing with a vibratome and handling of myocardial slices. Supplementary videos are included to visually demonstrate these steps. A number of critical steps are addressed that must be followed in order to prepare highly viable myocardial slices. These include identification of myocardial fiber direction and fiber alignment within the tissue block, careful temperature control, use of an excitation-contraction uncoupler, optimal vibratome settings and correct handling of myocardial slices. Many aspects of cardiac structure and function can be studied using myocardial slices in vitro. Typical results obtained with hearts from a small mammal (rat) and a large mammal (human) with heart failure are shown, demonstrating myocardial slice viability, maximum contractility, Ca
    MeSH term(s) Adult ; Animals ; Cardioplegic Solutions/chemistry ; Dissection/methods ; Dogs ; Equipment Design ; Heart Ventricles/cytology ; Humans ; Indicators and Reagents ; Mice ; Microtomy/instrumentation ; Microtomy/methods ; Myocardium/cytology ; Rats ; Tissue Preservation/methods
    Chemical Substances Cardioplegic Solutions ; Indicators and Reagents
    Language English
    Publishing date 2017-11-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 2244966-8
    ISSN 1750-2799 ; 1754-2189
    ISSN (online) 1750-2799
    ISSN 1754-2189
    DOI 10.1038/nprot.2017.139
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Metabolic flux analyses to assess the differentiation of adult cardiac progenitors after fatty acid supplementation.

    Malandraki-Miller, Sophia / Lopez, Colleen A / Alonaizan, Rita / Purnama, Ujang / Perbellini, Filippo / Pakzad, Kathy / Carr, Carolyn A

    Stem cell research

    2019  Volume 38, Page(s) 101458

    Abstract: Myocardial infarction is the most prevalent of cardiovascular diseases and pharmacological interventions do not lead to restoration of the lost cardiomyocytes. Despite extensive stem cell therapy studies, clinical trials using cardiac progenitor cells ... ...

    Abstract Myocardial infarction is the most prevalent of cardiovascular diseases and pharmacological interventions do not lead to restoration of the lost cardiomyocytes. Despite extensive stem cell therapy studies, clinical trials using cardiac progenitor cells have shown moderate results. Furthermore, differentiation of endogenous progenitors to mature cardiomyocytes is rarely reported. A metabolic switch from glucose to fatty acid oxidation occurs during cardiac development and cardiomyocyte maturation, however in vitro differentiation protocols do not consider the lack of fatty acids in cell culture media. The aim of this study was to assess the effect of this metabolic switch on control and differentiated adult cardiac progenitors, by fatty acid supplementation. Addition of oleic acid stimulated the peroxisome proliferator-activated receptor alpha pathway and led to maturation of the cardiac progenitors, both before and after transforming growth factor-beta 1 differentiation. Addition of oleic acid following differentiation increased expression of myosin heavy chain 7 and connexin 43. Also, total glycolytic metabolism increased, as did mitochondrial membrane potential and glucose and fatty acid transporter expression. This work provides new insights into the importance of fatty acids, and of peroxisome proliferator-activated receptor alpha, in cardiac progenitor differentiation. Harnessing the oxidative metabolic switch induced maturation of differentiated endogenous stem cells. (200 words).
    MeSH term(s) Animals ; Antigens, Differentiation/biosynthesis ; Cell Differentiation/drug effects ; Male ; Metabolic Flux Analysis ; Mice ; Myocardial Infarction/metabolism ; Myocardial Infarction/pathology ; Myocardial Infarction/therapy ; Myocardium/metabolism ; Myocardium/pathology ; Oleic Acid/pharmacology ; Stem Cells/metabolism ; Stem Cells/pathology
    Chemical Substances Antigens, Differentiation ; Oleic Acid (2UMI9U37CP)
    Language English
    Publishing date 2019-05-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2393143-7
    ISSN 1876-7753 ; 1873-5061
    ISSN (online) 1876-7753
    ISSN 1873-5061
    DOI 10.1016/j.scr.2019.101458
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top