Download or read book Effect of Selective COX 2 Inhibitors on Hepatic Progenitor Cells and the Pathologies of Experimental Hepatocarcinogenesis written by Richard Davies and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] Hepatocellular carcinoma (HCC) is the major malignancy complicating chronic liver disease. New therapies for the prevention of HCC are required due to the limited success and high tumour recurrence rates of existing treatments. Emerging evidence suggests that HCC arise from the transformation of adult liver progenitor cells (LPCs), which have the capacity to differentiate into hepatocytes and biliary cells during liver regeneration. LPC activation precedes neoplasia in experimental hepatocarcinogenesis. LPCs share antigenic epitopes with HCCs, including α-fetoprotein (AFP) and M2- pyruvate kinase (M2PK). In animal models of hepatocarcinogenesis, attenuation of the LPC response reduces the incidence of HCC following prolonged liver injury via a tumour necrosis factor (TNF) dependent mechanism. As TNF is a pro-inflammatory cytokine, these data suggest that anti-inflammatory agents may be effective in inhibiting LPC activation and hepatocarcinogenesis. Cyclo-oxygenase-2 (COX-2) is an inducible enzyme that mediates the production of many prostaglandins during inflammation and carcinogenesis. Recent investigations show that the administration of selective COX-2 inhibitors (SC2Is) may reduce the incidence of a variety of tumours including breast, colon and skin. The broad aim of this thesis was to conduct a series of detailed studies on the effects of a SC2I on LPC activation and the hepatic pathologies associated with hepatocarcinogenesis in order to test the hypothesis that S2CIs may be a beneficial therapy that can reduce liver injury and pre-neoplastic changes in the choline-deficient, ethionine supplemented (CDE) murine model of hepatocarcinogenesis. Administration of a SC2I (SC-236) significantly inhibited a variety of hepatic cell populations that expand during the first month of the CDE mouse model of hepatocarcinogenesis (a choline deficient, ethionine supplemented diet). Numbers of M2PK-positive LPCs (which are more hepatocytic in morphology and are also COX-2 positive) and inflammatory cells were all significantly reduced by SC-236. In contrast, numbers of A6-positive LPCs (which are more biliary cell-like in morphology and do not express COX-2) were unchanged. ... In summary, these data suggest that COX-2 inhibitors such as SC-236 inhibit LPC activation and a variety of pre-neoplastic liver pathologies as a result of COX-2 dependent and independent mechanisms that may be mediated through inhibition of Akt phosphorylation and induction of apoptosis. Moreover, SC2Is may be useful as preventative treatment strategies for HCC in patients with chronic liver disease.
Download or read book The Effect of Celecoxib on Hepatocellular Carcinoma written by Chi-Man Terence Tang and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "The Effect of Celecoxib on Hepatocellular Carcinoma" by Chi-man, Terence, Tang, 鄧致文, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled The effect of celecoxib on hepatocellular carcinoma Submitted by Terence Tang Chi Man For the degree of Doctor of Philosophy at the University of Hong Kong in August 2005 Hepatocellular carcinoma (HCC) is the second leading cause of cancer death in males in Hong Kong in the year of 2004. Previous studies have shown increased levels of cyclooxygenase-2 (COX-2) in a variety of human malignancies including HCC, suggesting that abnormal COX-2 expression plays an important role in carcinogenesis. In addition, some evidence suggests that selective COX-2 inhibitors suppress the formation of tumors in experimental models. However, the significance of COX-2 in progression of HCC remains unclear, and there are no data in the literature on the use of COX-2 inhibitor in HCC. The main objectives of this project were to evaluate the role of COX-2 in human HCC, and to investigate the in vitro and in vivo effects of celecoxib on HCC. Firstly, we evaluated the significance of COX-2 in HCC by examining the relationship between COX-2 and VEGF 165 levels and clinicopathological features. This study showed that elevated COX-2 levels correlated with elevated VEGF levels and invasiveness in HCC. Our data suggested that COX-2 plays a significant role in the invasiveness of HCC, possibly via its angiogenic effect. viSecondly, we performed in vivo studies to investigate the chemopreventive and therapeutic effects of celecoxib, a selective COX-2 inhibitor, on the development and growth of HCC xenograft in nude mice. Our results showed that celecoxib could prolong the latent period of HCC xenograft development in nude mice and decreased the growth of established HCC xenograft in nude mice significantly. However, there was no significant decrease in MVD and VEGF level in the treatment groups compared with the control groups. In in vitro studies, celecoxib induced apoptosis significantly in HCC cell lines and HUVEC. Interestingly, celecoxib induced G1 arrest in both HCC cell lines but not in HUVEC. We have found that the cyclin D1 decreased as the concentration of celecoxib increased. Celecoxib most likely induced apoptosis through the down-regulation of phosphorylation of NFκB, which reduced the cyclin D1 expression, and hence inhibition of proliferation in celecoxib-treated xenografts and cell lines. Finally, we investigated the gene profiling of celecoxib and COX-2 modulation in HCC in the in vitro study by oligo microarray analysis. We aimed to investigate the COX-2-dependent and -independent pathways caused by celecoxib treatment in HCC. Our microarray data suggested that celecoxib may act on both COX-dependent and -independent pathways. We verified six genes by using RT- PCR and northern blot analysis from our microarray data. Three genes (RRM2, KNG1, and FABP1) from COX-2-dependent pathways and three genes (ATF3, CXCL5, and SERPINC1) from COX-independent pathways were considered worthy of further study. In conclusion, our data suggest that COX-2 expression is significantly associated with progression of HCC, and the selective COX-2 inhibitor, celecoxib, can delay the development of HCC and suppress the growth of established HCC in vii experimental animals, most likely via the growth arrest and apoptosis pathways. COX-2 inhibition appears to be a promising strategy for chemoprevention and treatment of HCC
Download or read book Cox 2 written by Joseph R. Bertino and published by Karger Medical and Scientific Publishers. This book was released on 2003-01-01 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous investigators have found increased levels of cyclooxygenase-2 (COX-2) in both premalignant and malignant tissues. Moreover, animals engineered to be COX-2 deficient or treated with a selective COX-2 inhibitor showed reduced tumor formation and growth. The present book reviews these findings suggesting that COX-2 is a valid molecular target for the prevention and treatment of cancer. The first chapters are devoted to the epidemiology of nonsteroidal anti-inflammatory drugs (NSAIDs) and cancer, the pharmacology of COX-2 inhibitors and the regulation of COX-2 expression in human cancers. Besides, the book contains a series of chapters examining the link between COX-2 and cancer in specific organs (e.g. skin, breast, cervix, digestive tract, lung, etc.). Furthermore, several clinical trials assessing the potential of COX-2 inhibitors for preventing and treating cancer are described. The final chapter provides an up-to-date consideration of COX-independent targets of NSAIDs and related compounds in cancer prevention and treatment. This state-of-the-art publication is recommended reading not only for medical and radiation oncologists, but also for pharmacologists, gastroenterologists and other subspecialists.
Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Download or read book Hepatocellular Carcinoma written by Yujin Hoshida and published by Springer. This book was released on 2019-08-05 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Canine and Feline Gastroenterology E Book written by Robert J. Washabau and published by Elsevier Health Sciences. This book was released on 2012-09-02 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Biomaterials for 3D Tumor Modeling written by Subhas C. Kundu and published by Elsevier. This book was released on 2020-08-22 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomaterials for 3D Tumor Modeling reviews the fundamentals and most relevant areas of the latest advances of research of 3D cancer models, focusing on biomaterials science, tissue engineering, drug delivery and screening aspects. The book reviews advanced fundamental topics, including the causes of cancer, existing cancer models, angiogenesis and inflammation during cancer progression, and metastasis in 3D biomaterials. Then, the most relevant biomaterials are reviewed, including methods for engineering and fabrication of biomaterials. 3D models for key biological systems and types of cancer are also discussed, including lung, liver, oral, prostate, pancreatic, ovarian, bone and pediatric cancer. This book is suitable for those working in the disciplines of materials science, biochemistry, genetics, molecular biology, drug delivery and regenerative medicine. Reviews key biomaterials topics, including synthetic biomaterials, hydrogels, e-spun materials and nanoparticles Provides a comprehensive overview of 3D cancer models for key biological systems and cancer types Includes an overview of advanced fundamental concepts for an interdisciplinary audience in materials science, biochemistry, regenerative medicine and drug delivery
Download or read book Inflammation and Cancer written by Bharat B. Aggarwal and published by Springer. This book was released on 2014-05-12 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines in detail the role of chronic inflammatory processes in the development of several types of cancer. Leading experts describe the latest results of molecular and cellular research on infection, cancer-related inflammation and tumorigenesis. Further, the clinical significance of these findings in preventing cancer progression and approaches to treating the diseases are discussed. Individual chapters cover cancer of the lung, colon, breast, brain, head and neck, pancreas, prostate, bladder, kidney, liver, cervix and skin as well as gastric cancer, sarcoma, lymphoma, leukemia and multiple myeloma.
Download or read book Liver Regeneration written by Udayan M. Apte and published by Academic Press. This book was released on 2015-08-13 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liver Regeneration: Basic Mechanisms, Relevant Models and Clinical Applications presents cutting-edge information on liver regeneration research through an integrated, systems-wide perspective. The book addresses discoveries on hepatic progenitor cells, liver regeneration after chemical damage, and liver regeneration as a prime therapy for liver failure and disease. By addressing the urgent need for translating basic research findings into clinically relevant modalities and potential therapeutic applications, the book provides the data needed to improve liver patient management. Hundreds of full-color, graphic photographs and illustrations underline key elements and show researchers and students important aspects of liver transplantation, immunofluorescence, and other techniques used in liver regeneration. Summarizes current liver regeneration studies and discussions on expected discoveries Provides an overview of standard scientific and cutting-edge technologies to study liver regeneration Presents details on the molecular mechanisms that affect liver regeneration Highly illustrated, with hundreds of full-color, graphic photographs and illustrations to enhance the learning process
Download or read book Pathogenesis of Liver Diseases written by Emmanuel Farber and published by . This book was released on 1987 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metronomic Chemotherapy written by Guido Bocci and published by Springer. This book was released on 2014-09-04 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyzes all aspects of metronomic chemotherapy, a new approach involving low-dose, long-term, and frequently administered therapy that has preclinical and clinical activity in various tumors. After an opening section on the pharmacological bases of metronomic chemotherapy, including its antiangiogenic effects and impact on immunity, preclinical studies on various classes of drug are discussed. Clinical applications of metronomic chemotherapy in a wide variety of tumors are then addressed in detail, with description of the results of all published studies. The clinical pharmacology of metronomic chemotherapy is also considered in depth, encompassing pharmacokinetics, pharmacogenetics, pharmacoeconomics, and adverse drug reactions. The book closes by describing the role of this therapy in the veterinarian clinic.
Download or read book Vascular Disorders of the Liver written by Dominique Valla and published by Springer Nature. This book was released on 2021-12-03 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account on individually rare, but collectively frequent diseases of the liver. In the first part, conditions such as hepatic vascular malformations, ischemic cholangiopathy, hepatic artery occlusion, sinusoidal conditions and Budd-Chiari syndrome are discussed among others. The second part examines the causes of vascular liver disease namely, coagulation disorders, neoplasm disorders, non-malignant blood disorders, systemic diseases and toxins, among others. The unique expertise of the authors, who are all members of the Vascular Liver Disease Disorders Group, an independent network of researchers with a common interest in Vascular Liver Diseases, are merged for an optimal pragmatic and individualized approach. This book is of interest to a broad range of experts, such as hepatologists, internists, radiologists and angiologists.
Download or read book Probiotics for nutrition research in health and disease written by Jose Luiz De Brito Alves and published by Frontiers Media SA. This book was released on 2023-07-05 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for Chlordane written by and published by . This book was released on 1994 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NanoBioMedicine written by Shailendra K. Saxena and published by Springer Nature. This book was released on 2020-02-03 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of the recent trends in various Nanotechnology-based therapeutics and challenges associated with its development. Nanobiotechnology is an interdisciplinary research that has wide applications in the various fields of biomedical research. The book discusses the various facets of the application of Nanotechnology in drug delivery, clinical diagnostics, Nanomedicine and treatment of infectious and chronic diseases. The book also highlights the recent advancements on important devices and applications that are based on Nanotechnology in medicine and brief the regulatory and ethical issues related to nanomedical devices. It also reviews the toxicological profile of various nanomaterials and emphasizes the need for safe nanomaterials for clinical use. Finally, the book discusses the recent developments of potential commercial applications of Nanotechnology.
Download or read book Liver Disease in Children written by Frederick J. Suchy and published by Cambridge University Press. This book was released on 2021-03-18 with total page 875 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liver disease in children is increasing in prevalence, placing a huge burden on healthcare systems and often requiring long-term management. Offering an integrative approach to the science and clinical practice of pediatric hepatology, this is the definitive reference text for improved diagnosis and treatment strategies. In the new edition of this authoritative text, chapters have been thoroughly revised in line with major advances in the field, such as recognizing the increased frequency of fatty liver disease, and how genetic testing has the potential to establish earlier diagnoses for a variety of diseases. Disorders covered include cholestasis, metabolic disorders and hepatitis, with their presentation across the spectrum of infancy, childhood and adolescence discussed. The indications and surgical aspects of liver transplant are explained and post-transplant care is described in detail. This is a valuable resource for pediatricians, hepatologists, gastroenterologists and all clinicians involved in the care of children with liver diseases.
Download or read book In Vivo Models to Study Angiogenesis written by Domenico Ribatti and published by Academic Press. This book was released on 2017-08-18 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Vivo Models to Study Angiogenesis provides the latest information and an overview of the most common assays for studying angiogenesis in vivo. Under physiological conditions, angiogenesis is tightly controlled, whereas increased production of angiogenic stimuli and/or reduced production of angiogenic inhibitors leads to abnormal neovascularization, such as occurs in cancer, chronic inflammatory disease, diabetic retinopathy, macular degeneration and cardiovascular disorders. Several genetic and epigenetic mechanisms are involved in the early development of the vascular system. This book presents the latest information from the extensive literature and research available. Evidence is now emerging that blood vessels themselves have the ability to provide instructive regulatory signals to surrounding non-vascular target cells during organ development. Thus, endothelial cell signaling is currently believed to promote fundamental cues for cell fate specification, embryo patterning, organ differentiation and postnatal tissue remodeling. Provides information on the most common assays to study angiogenesis in vivo Presents an ideal reference for those interested in angiogenesis as a normal and vital process in growth and development Covers wound healing, the formation of granulation tissue, and the transition of tumors from benign to malignant
