Cellular fluctuations, alpha-fetoprotein expression, and the question of stem cells in experimental liver regeneration and hepatocarcinogenesis

Cellular fluctuations, alpha-fetoprotein expression, and the question of stem cells in experimental liver regeneration and hepatocarcinogenesis
Author: Wolf-Dieter Kuhlmann
Publisher: Cuvillier Verlag
Total Pages: 94
Release: 2023-05-25
Genre: Medical
ISBN: 3736967756

Download Cellular fluctuations, alpha-fetoprotein expression, and the question of stem cells in experimental liver regeneration and hepatocarcinogenesis Book in PDF, Epub and Kindle

Hepatocytes and bile ductular cells possess stem-like potential in restoring liver tissue. This was derived from rat and mouse injury models such as (a) partial hepatectomy by surgery; (b) acute carbon tetrachloride intoxication; © injuries by D-galactosamine (GalN) or by N-nitrosomorpholine (NNM); (d) experimental hepatocarcinogenesis with NNM using different doses. Liver parenchyma was restored by adult hepatocytes after partial hepatectomy as well as after carbon tetrachloride intoxication. Concurrently, hepatocytes resumed synthesis of alpha-1-fetoprotein (AFP) which depended to a high degree on the animal species and strains used in that studies. In contrast to this way of regeneration, liver repair after heavy injuries by agents such as GalN and NNM was initiated by oval cell proliferation deriving from ductular epithelial cells of the canaliculi of HERING (canals of Hering, intrahepatic bile ductules) as sources of endogenous progenitors. Progenitor populations reach levels of differentiation with fetal gene reactivation and significant AFP expression. Proliferating oval cells operated as transit and amplification compartment during liver regeneration. Oval cell proliferation and concurrent AFP synthesis occurred also in the early stages of hepatocarcinogenesis when the carcinogen NNM was applied in toxic doses. The histologic features compared to those seen in GalN intoxication. NNM carcinogenicity was of concern for both oval cells and adult hepatocytes with risks of transformation and malignant development. At the cancer stage, carcinomas either synthesizing AFP or not can be found side by side in the same liver. AFP expression by cancer cells seems to be a special attribute to differentiation stages in carcinogenesis. Clonality, maturation arrest and retro-differentiation feature cells with high autonomy.

Stem Cell and Liver Regeneration

Stem Cell and Liver Regeneration
Author: K. Okita
Publisher: Springer Science & Business Media
Total Pages: 108
Release: 2012-12-06
Genre: Medical
ISBN: 4431539719

Download Stem Cell and Liver Regeneration Book in PDF, Epub and Kindle

Cellular therapy with liver stem cells and their progeny, including bone marrow cells, is a promising new approach that will contribute significantly to the treatment of liver diseases. The existence of the liver stem cell had long been debated, but it is now generally accepted that the liver contains cells with stem-like properties and that these cells can be activated to proliferate and differentiate into mature hepatocytes under certain conditions. There is also a substantial body of evidence to suggest that oval cells are involved in liver regeneration as they differentiate into hepatocytes and biliary cells. This book is a collection of work on stem cell and liver regeneration, initially delivered at the 14th Yamaguchi (Japan) Symposium on Liver Disease. Its nine chapters present the most recent data about basic and clinical research in hepatology in Japan and other countries, providing a valuable resource for researchers and practitioners alike.

Liver Regeneration

Liver Regeneration
Author: Dieter Häussinger
Publisher: Walter de Gruyter
Total Pages: 233
Release: 2011
Genre: Medical
ISBN: 3110250780

Download Liver Regeneration Book in PDF, Epub and Kindle

understanding the mechanisms involved in liver regeneration is of crucial importance for clinical medicine, not only regarding carcinogenesis and diabetes treatment, but also for the use of stem cells for cell therapy and liver surgery. This graduate-level text provides an overview of the current state of knowledge of the molecular mechanisms of liver regeneration. Hepatic stem cells are introduced and the important players involved in regeneration such as oval cells, bone marrow and stellate cells are reviewed. The cell signaling pathways that initiate liver regeneration and regulate the switch between proliferation and apoptosis are presented and the role of liver stem cells in tumorigenesis is discussed. The book also treats the epigenetic regulation of liver stem cells and the roles of inflammation and angiogenesis in liver regeneration. This compact overview of the fascinating regenerative capacity of the liver will be of interest to graduate students and post-docs in molecular biology, biochemistry and medicine.

Liver Stem Cells

Liver Stem Cells
Author: Stewart Sell
Publisher:
Total Pages: 368
Release: 1997
Genre: Gene therapy
ISBN:

Download Liver Stem Cells Book in PDF, Epub and Kindle

Alpha-Fetoprotein

Alpha-Fetoprotein
Author: Hannu Jalanko
Publisher:
Total Pages: 43
Release: 1979
Genre:
ISBN: 9789519923611

Download Alpha-Fetoprotein Book in PDF, Epub and Kindle

Stem Cell and Liver Regeneration

Stem Cell and Liver Regeneration
Author: K Okita
Publisher:
Total Pages: 100
Release: 2003-12-01
Genre:
ISBN: 9784431539728

Download Stem Cell and Liver Regeneration Book in PDF, Epub and Kindle

Hepatocellular Carcinoma

Hepatocellular Carcinoma
Author: Yujin Hoshida
Publisher: Springer
Total Pages: 366
Release: 2019-08-05
Genre: Medical
ISBN: 3030215407

Download Hepatocellular Carcinoma Book in PDF, Epub and Kindle

This book provides a comprehensive overview of the current limitations and unmet needs in Hepatocellular Carcinoma (HCC) diagnosis, treatment, and prevention. It also provides newly emerging concepts, approaches, and technologies to address challenges. Topics covered include changing landscape of HCC etiologies in association with health disparities, framework of clinical management algorithm, new and experimental modalities of HCC diagnosis and prognostication, multidisciplinary treatment options including rapidly evolving molecular targeted therapies and immune therapies, multi-omics molecular characterization, and clinically relevant experimental models. The book is intended to assist collaboration between the diverse disciplines and facilitate forward and reverse translation between basic and clinical research by providing a comprehensive overview of relevant areas, covering epidemiological trend and population-level patient management strategies, new diagnostic and prognostic tools, recent advances in the standard care and novel therapeutic approaches, and new concepts in pathogenesis and experimental approaches and tools, by experts and opinion leaders in their respective fields. By thoroughly and concisely covering whole aspects of HCC care, Hepatocellular Carcinoma serves as a valuable reference for multidisciplinary readers, and promotes the development of personalized precision care strategies that lead to substantial improvement of disease burden and patient prognosis in HCC.

Liver Stem Cells

Liver Stem Cells
Author: Takahiro Ochiya
Publisher: Humana Press
Total Pages: 0
Release: 2011-12-14
Genre: Science
ISBN: 9781617794674

Download Liver Stem Cells Book in PDF, Epub and Kindle

Increasing evidence suggests that liver stem cells have the capacity to differentiate into parenchymal hepatocytes or into bile ductular cells. These stem cells may be activated to proliferate after severe liver injury or exposure to hepatocarcinogens. Stem cell replacement strategies are being investigated as an alternative approach to liver repair and regeneration. Additionally, stem cell transplantation has been shown to significantly improve liver function and increase survival in experimentally-induced liver-injury models in animals. In Liver Stem Cells: Methods and Protocols, expert researchers focus on several hepatic progenitor cells, hepatic differentiation form stem cells, bile ductal cell formation from stem cells, liver stem cells and hepatocarcinogenesi, and application of liver stem cells for cell therapy. These topics shed light on stem cell technology which may lead to the development of effective clinical modalities for human liver diseases. Written in the highly successful Methods in Molecular BiologyTM series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls. Thorough and intuitive, Liver Stem Cells: Methods and Protocols seeks to aid scientists in the further study of preclinical and clinical investigations that explore the therapeutic potential of stem cells in repair of liver injuries.

Canine and Feline Gastroenterology - E-Book

Canine and Feline Gastroenterology - E-Book
Author: Robert J. Washabau
Publisher: Elsevier Health Sciences
Total Pages: 1024
Release: 2012-09-02
Genre: Medical
ISBN: 143770302X

Download Canine and Feline Gastroenterology - E-Book Book in PDF, Epub and Kindle

A comprehensive reference standard for the discipline, Canine and Feline Gastroenterology covers the biology, pathobiology, and diagnosis and treatment of diseases of the gastrointestinal, pancreatic, and hepatobiliary systems. An international team of experts, including 85 authors from 17 different countries, led by Robert Washabau and Michael Day, covers everything from minor problems such as adverse food reactions to debilitating inflammatory, infectious, metabolic, and neoplastic diseases of the digestive system. This authoritative text utilizes an evidence-based approach to reflect the latest science and research, complemented by principles of problem solving, algorithms to improve clinical diagnoses, and extensive full-color illustrations. For generalists and specialists alike, this gastroenterology reference should be part of every serious practitioner's professional library. A comprehensive, 928-page reference standard covers the discipline of canine and feline gastroenterology. An international focus is provided by 85 authors from 17 different countries, including renowned experts in veterinary gastroenterology, internal medicine, pathology, clinical pathology, radiology, and infectious disease. Coverage of the entire breadth and depth of gastroenterology ranges from biology to pathobiology, as well as diagnosis and treatment of diseases of the gastrointestinal, pancreatic, and hepatobiliary systems. Current information on GI microflora, immunology, cellular growth, and systems integration provides a foundation for treating clinical problems. Coverage of diseases in dogs and cats includes the oral cavity, esophagus, stomach, small intestine, large intestine, colon, anorectum, liver and biliary tract, exocrine pancreas, peritoneum, and associated vasculature. A focus on patient management examines the full range of procedures and techniques essential to diagnosis and treatment from clinical signs and diagnosis to nutritional support and pharmacologic management of disease. Clear explanations of current diagnostic modalities include laboratory tests, molecular methods, diagnostic imaging, endoscopy, and histopathology, also showing how to interpret and utilize results. A strong clinical approach emphasizes need-to-know information for managing the common and not-so-common G.I. clinical problems of everyday practice. Full-color photographs and illustrations depict concepts, conditions, and procedures. An evidence-based medicine perspective reflects the latest research as well as the modern practice of veterinary medicine. Logical, coherent, and consistent internal organization makes this a reader-friendly edition. Problem-based algorithms help in diagnosing every G.I. clinical problem from A to Z. A stand-alone section on the pharmacologic approach to G.I. disease offers quick and easy drug reference.