Download or read book The Role of Immune Cells in Hepatic Ischemia Reperfusion written by Tao Qiu and published by Frontiers Media SA. This book was released on 2022-12-01 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EXTRACELLULAR MITOCHONDRIA RELEASED FROM LIVER ISCHEMIA REPERFUSION INJURY ACT AS ALARMINS TO EVOKE INNATE IMMUNE SYSTEM AND TRIGGER INFLAMMATION written by Qianni Hu and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ischemia reperfusion injury (IRI) during liver transplantation enhances the immunogenicity of allografts and thus impacts overall graft outcome. This sterile inflammatory insult is known to activate innate immunity and propagate organ damage through the recognition of endogenous alarmins. The purpose of this study was to investigate the role of mitochondrial alarmins in the pathogenesis of hepatic IRI and the mechanism of immune activation by mitochondria. Mitochondria are vital cellular organelles for energy generation. However, owing to their similarity to bacteria, extracellular mitochondria function as alarmins. Recent studies revealed that mitochondria are critically involved in the initiation and progression of multiple diseases and associated with immune dysregulation. Increased levels of mtDNA and free mitochondria (FM) release were observed in both transplantation-associated and warm IR. Co-culture of mitochondrial components with hepatocytes significantly increased cell death. Mast cells (MC) and Kupffer cells (KC) are versatile immune sentinel cells known to respond to both external and internal stimuli as a first line of defense in liver. However, the response of MC and KC to mitochondria was unknown. Injection of FM into mice led to neutrophil recruitment and macrophage activation within the peritoneal cavity at 16h. MC-deficient mice had significantly reduced neutrophil responses to FM although macrophage activation was still observed. Culture of MC or macrophages with mitochondria resulted in increased production of multiple mediators. FM induced histamine release from human CBMC and mouse BMMC. This degranulation process was rapid and largely independent of extracellular calcium. Pharmacological approaches revealed that FPR1 was important for mitochondria-mediated in vitro degranulation and mediator production, in addition to in vivo sterile inflammation. FM also enhanced macrophage activation, although this was in an FPR1-independent manner. FM were potent activators of both human and mouse innate immune cells, such as MC and macrophages, in vitro and induced substantial MC-dependent, neutrophilic inflammation in vivo. Regulation of mitochondria-mediated immune responses may be important during the initiation or progression of human disease such as acute graft failure or chronic graft versus host disease in liver transplantation, rheumatoid arthritis, or in patients with blood transfusion, which have all been reported to demonstrate enhanced FM release.

Download or read book Biology of Myelomonocytic Cells written by Anirban Ghosh and published by BoD – Books on Demand. This book was released on 2017-05-10 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Myelomonocytes are the multipotent cells in the stage of blood cell differentiation, which mainly comprise blood monocytes, tissue macrophages and subset of dendritic cells. Actually, their position and ability of judgement of the health of tissue or organ environment are the key initiators of tissue-specific immune response in a local and global fashion. Interestingly, the morpho-functional aspects of this group of cells vary to a wide range with their positional diversity. Their ability to communicate or represent the tissue microenvironment to the peripheral immune system and efficiency to engage the system to effector activation hold the key for a successful immune endeavour. The present volume shows some glimpses of such an extensive area of current immunology research.

Download or read book Hepatic Ischemia reperfusion Injury and the Role of P selectin and Intercellular Adhesion Molecule 1 written by Keith M. Monson and published by . This book was released on 2004 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Disulfide HMGB1 Induced Immune Activation During and Following Ischemia Reperfusion Injury in Human Orthotopic Liver Transplantation written by Allyson Queenth Terry and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ischemia-reperfusion injury (IRI) is an intrinsic risk of solid organ transplantation due to the cellular damage and subsequent immune activation induced by current allograft procurement protocols. Increased severity of IRI contributes to poor clinical outcomes, including early allograft dysfunction and alloimmune-mediated graft rejection, following orthotopic liver transplantation (OLT). Circulating recipient monocytes are one of the first cell populations to infiltrate the donor liver. Once activated, these monocytes can differentiate into macrophages capable of crosstalk with the adaptive immune cells responsible for the development of alloimmunity. The intracellular protein high mobility group box 1 (HMGB1) is released during IRI in mouse models and correlates with degree of IRI. HMGB1 is unique in that each of its three oxidative forms have different functions and it can bind multiple immune receptors on monocytes and macrophages, including toll-like receptor 4 (TLR4) and TLR9. Blood from IRI+ human OLT recipients activates TLR4 and TLR9. We therefore investigated whether the pro-inflammatory oxidative form of HMGB1 (disulfide HMGB1, diS-HMGB1) is increased in IRI+ patients and, if so, the mechanisms behind diS-HMGB1-induced innate and adaptive immune activation during and following OLT. First, we determined that diS-HMGB1 was increased in post-reperfusion portal vein blood of IRI+ patients and that this same blood sample induced a pro-inflammatory response in healthy volunteer monocytes in vitro. The augmented diS-HMGB1 levels in IRI+ patient blood were mediated by secretion of diS-HMGB1 from pro-inflammatory liver resident macrophages in the donor allograft that became activated during the transplant process. We confirmed the detrimental effect of increased diS-HMGB1 levels in a murine model of IRI. Second, we developed an in vitro model of human primary monocyte-to-macrophage differentiation to elucidate the specific effects of diS-HMGB1 on this process. We determined that diS-HMGB1 functions by inducing secreted factors, surface markers, and oxidative functions that allow monocytes and macrophages to create a local pro-inflammatory environment and to induce a pro-inflammatory adaptive immune response through interactions with CD4+ T cells. Finally, we report how both TLR4 and TLR9 contribute to the manifestation of this phenotype. In sum, this work provides insight into the impact of diS-HMGB1 on occurrence and severity of IRI during OLT and how the release of diS-HMGB1 at the time of transplant can have lasting impacts on the immune landscape, and therefore graft and recipient health and survival, following OLT.

Download or read book Stellate Cells in Health and Disease written by Chandrashekhar Gandhi and published by Academic Press. This book was released on 2015-04-10 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stellate Cells in Health and Disease is a comprehensive reference providing the most up-to-date knowledge and perspectives on the function of stellate cells affecting the liver and other organs. The text presents comprehensive coverage of their already established role in hepatic fibrosis along with the newer emerging evidence for stellate cell participation in the liver cell (hepatocyte) survival and regeneration, hepatic immunobiology, transplant tolerance, and liver cancer. Chapters describe both animal and human research and the relevance of findings from animal research to human pathophysiology, and also contain sections on future directions which will be of special interest to basic and clinical researchers working on liver fibrosis, hepatic biology, and pathobiology. Presents coverage of the mechanisms of liver fibrosis with stellate cells as a target for therapy. Shows stellate cells as a major participant in hepatic immunobiology, including transplantation immunology. Key illustrations show the phenotypical changes in stellate cells in situ and tissue culture, their interactions with other cell types, signaling pathways and demonstrate the functions and roles of stellate cell in pathological processes.

Download or read book Cooperation of Liver Cells in Health and Disease written by Z. Kmiec and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is only during the last decade that the functions of sinusoidal endothelial cells, Kupffer cells, hepatic stellate cells, pit cells and other intrahepatic lymphocytes have been better understood. The development of methods for isolation and co-culturing various types of liver cells has established that they communicate and cooperate via secretion of various intercellular mediators. This monograph summarizes multiple data that suggest the important role of cellular cross-talk for the functions of both normal and diseased liver. Special features of the book include concise presentation of the majority of detailed data in 19 tables. Original schemes allow for the clear illustration of complicated intercellular relationships. This is the first ever presentation of the newly emerging field of liver biology, which is important for hepatic function in health and disease and opens new avenues for therapeutic interventions.

Download or read book Liver Pathophysiology written by Pablo Muriel and published by Academic Press. This book was released on 2017-03-02 with total page 917 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liver Pathophysiology: Therapies and Antioxidants is a complete volume on morphology, physiology, biochemistry, molecular biology and treatment of liver diseases. It uses an integral approach towards the role of free radicals in the pathogenesis of hepatic injury, and how their deleterious effects may be abrogated by the use of antioxidants. Written by the most prominent authors in the field, this book will be of use to basic and clinical scientists and clinicians working in the biological sciences, especially those dedicated to the study and treatment of liver pathologies. Presents the most recent advances in hepatology, with a special focus on the role of oxidative stress in liver injury. Provides in vivo and in vitro models to study human liver pathology. Explains the beneficial effects of antioxidants on liver diseases. Contains the most recent and modern treatments of hepatic pathologies, including, but not limited to, stem cells repopulation, gene therapy and liver transplantation.

Download or read book Ischaemia Reperfusion Injury written by Pierce A. Grace and published by Wiley-Blackwell. This book was released on 1999-02-04 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ischaemia-Reperfusion Injury is concerned with the consequences of interrupting and restoring blood flow to tissues. Many common clinical conditions are caused by interruption of blood flow to tissues (eg, ischaemic heart disease, peripheral vascular disease, stroke); blood flow is also interrupted deliberately in many surgical procedures (eg, cardiac surgery, arterial surgery, transplant surgery, limb surgery with tourniquet). In treating such conditions or after performing such operations the aim of the clinician is to restore the blood supply to the ischaemic tissue. Paradoxically, restoration of blood flow to ischaemic tissues can lead to further tissue damage with the potential for severe local and systemic injury. This book focuses on the clinical, pathological and biochemical processes involved in ischaemia-reperfusion injury and gives an overview of the strategies that may be adopted to mitigate or prevent such injury. This book will be of interest to both clinicians and scientists who have to deal with or have interest in this difficult but important problem.

Download or read book Signaling Pathways in Liver Diseases written by Jean-Francois Dufour and published by John Wiley & Sons. This book was released on 2015-08-24 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signaling Pathways in Liver Diseases, Third Edition again provides hepatologists and hepatology researchers with an expert overview of the complex and novel cellular/extracellular signaling pathways in the liver, and their role in liver diseases. The last few years have seen a great number of developments in this field, which in turn have led to new opportunities for innovative treatments; however, the intricacy of these pathways and their interactions continue to provide a real challenge for clinicians. This outstanding book compiles the emerging knowledge into a single expert resource, cataloguing and organizing it into an accessible and understandable format. With increased focus on the comprehension of cellular mechanisms involved in steatohepatitis, cirrhosis, and liver tumors, which has led to changes in the management of these diseases, this new edition also sees the introduction of exciting new chapters on key emerging areas such as: Autophagy Notch Pathway P13K/PTEN Signaling in Liver Diseases Sirtuins Hepcidin and Iron Epigenetic Regulation of Hepatic Stellate Cells and Liver Fibrosis Oxidative Stress and Signaling in the Liver. Professors Dufour and Clavien have assembled an all-star cast of chapter authors, each of whom has provided clear and appropriate illustrations to reinforce the text, with a key points box offering a concise and handy summary. Self-assessment questions and answers allow the reader to test their own knowledge. Signaling Pathways in Liver Disease, Third Edition is the perfect educational and reference tool to bridge the information exchange between the laboratory, the clinical ward, and the operating room, and an essential tool for the modern-day hepatologist.

Download or read book Mechanisms of Vascular Disease written by Robert Fitridge and published by University of Adelaide Press. This book was released on 2011 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: New updated edition first published with Cambridge University Press. This new edition includes 29 chapters on topics as diverse as pathophysiology of atherosclerosis, vascular haemodynamics, haemostasis, thrombophilia and post-amputation pain syndromes.

Download or read book Cardiothoracic Critical Care E Book written by David Sidebotham and published by Elsevier Health Sciences. This book was released on 2007-09-12 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new bedside manual guides you through all the practical aspects of managing patients following cardiothoracic surgery and critically ill cardiology patients. Primarily designed to use in cardiothoracic intensive care units and coronary care units, it covers the perioperative management for the full range of cardiothoracic surgical procedures, the management of complications, and related issues. Core topics in cardiothoracic critical care, such as hemodynamic instability, arrhythmias, bleeding, and mechanical cardiac support, are afforded broad coverage. Also included are sections on advanced ventilatory techniques and veno-venous ECMO for treating severe respiratory failure, as well as nutritional support, treating and preventing infection, renal failure, and care of the dying patient. Concisely written and featuring liberal use of illustrations as well as an integrated, tightly edited style, and a limited number of key references, this volume will become your reference of choice for the care of of cardiothoracic surgery patients and critically ill cardiology patients. Find information quickly with concisely written text. Get a more complete picture with extensive illustrations. Focus on just the information you need using a a limited number of key references. Navigate the complexities of critical care for a fulll range of cardiothoracic surgery patients with in-depth coverage of perioperative care, management of complications, and more.

Download or read book Cytokine Inhibitors written by Gennaro Ciliberto and published by CRC Press. This book was released on 2000-11-14 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiling an up-to-date and detailed survey of the role cytokines play in cell-to-cell communication, development, and differentiation, this comprehensive reference highlights the medical advantages of cytokine inhibition and pursues novel methods of discovery for more potent and specific blocking agents. Investigates the pathogenic role of

Download or read book Biomarkers in Liver Disease written by Victor R. Preedy and published by Springer. This book was released on 2017-07-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade there has been a major sea change in the way disease is diagnosed and investigated due to the advent of high throughput technologies, such as microarrays, lab on a chip, proteomics, genomics, lipomics, metabolomics etc. These advances have enabled the discovery of new and novel markers of disease relating to autoimmune disorders, cancers, endocrine diseases, genetic disorders, sensory damage, intestinal diseases etc. In many instances these developments have gone hand in hand with the discovery of biomarkers elucidated via traditional or conventional methods, such as histopathology or clinical biochemistry. Together with microprocessor-based data analysis, advanced statistics and bioinformatics these markers have been used to identify individuals with active disease or pathology as well as those who are refractory or have distinguishing pathologies. New analytical methods that have been used to identify markers of disease and is suggested that there may be as many as 40 different platforms. Unfortunately techniques and methods have not been readily transferable to other disease states and sometimes diagnosis still relies on single analytes rather than a cohort of markers. There is thus a demand for a comprehensive and focused evidenced-based text and scientific literature that addresses these issues. Hence the formulation of Biomarkers in Disease The series covers a wide number of areas including for example, nutrition, cancer, endocrinology, cardiology, addictions, immunology, birth defects, genetics, and so on. The chapters are written by national or international experts and specialists.

Download or read book Liver Myofibroblasts written by Jiri Kanta and published by Frontiers Media SA. This book was released on 2016-10-25 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Myofibroblasts (MFB) are found in most tissues of the body. They have the matrix-producing functions of fibroblasts and contractile properties that are known from smooth muscle cells. Fundamental work of the last decades has shed remarkable light on their origin, biological functions and role in disease. During hepatic injury, they fulfill manifold functions in connective tissue remodeling and wound healing, but overshooting activity of MFB on the other side induces fibrosis and cirrhosis. The present e-book "Liver myofibroblasts" contains 9 articles providing comprehensive information on "hot topics" of MFB. In our opening editorial we provide a short overview of the origin of MFB and their relevance in extracellular matrix formation which is the hallmark of hepatic fibrosis. Thereafter, leading experts in the field share their current perspectives on special topics of (i) MFB in development and disease, ii) their role in hepatic fibrogenesis, and (iii) promising therapies and targets that are suitable to interfere with hepatic fibrosis.

Download or read book Mesenchymal Stem Cell Derived Exosomes written by Yaoliang Tang and published by Academic Press. This book was released on 2015-09-02 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mesenchymal stem cell-derived exosomes are at the forefront of research in two of the most high profile and funded scientific areas – cardiovascular research and stem cells. Mesenchymal Stem Cell Derived Exosomes provides insight into the biofunction and molecular mechanisms, practical tools for research, and a look toward the clinical applications of this exciting phenomenon which is emerging as an effective diagnostic. Primarily focused on the cardiovascular applications where there have been the greatest advancements toward the clinic, this is the first compendium for clinical and biomedical researchers who are interested in integrating MSC-derived exosomes as a diagnostic and therapeutic tool. Introduces the MSC-exosome mediated cell-cell communication Covers the major functional benefits in current MSC-derived exosome studies Discusses strategies for the use of MSC-derived exosomes in cardiovascular therapies

Download or read book Innovative Medicine written by Kazuwa Nakao and published by Springer. This book was released on 2015-10-13 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to innovative medicine, comprising the proceedings of the Uehara Memorial Foundation Symposium 2014. It remains extremely rare for the findings of basic research to be developed into clinical applications, and it takes a long time for the process to be achieved. The task of advancing the development of basic research into clinical reality lies with translational science, yet the field seems to struggle to find a way to move forward. To create innovative medical technology, many steps need to be taken: development and analysis of optimal animal models of human diseases, elucidation of genomic and epidemiological data, and establishment of “proof of concept”. There is also considerable demand for progress in drug research, new surgical procedures, and new clinical devices and equipment. While the original research target may be rare diseases, it is also important to apply those findings more broadly to common diseases. The book covers a wide range of topics and is organized into three complementary parts. The first part is basic research for innovative medicine, the second is translational research for innovative medicine, and the third is new technology for innovative medicine. This book helps to understand innovative medicine and to make progress in its realization.