Download or read book Antiviral Drugs and Interferon The Molecular Basis of Their Activity written by Yechiel Becker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on antiviral drugs and their mode of action in infected cells. in animals and in man. has led to a better understanding of the molecular pro cesses involved in virus replication. Screeninq of large numbers of natural and semisynthetic compounds resulted in the characterization of certain sub stances that had a limited efficiency as antiviral druqs. A few chemically synthesized compounds were also found to be effective as antiviral agents in the chemotherapy of human virus diseases. A major difficulty in the develop ment of effective antiviral agents has been the lack of selectivity. and toxicity for uninfected cells. of drugs that effectively inhibited virus replication in vitro. Further understanding of the molecular processes of virus replication in infected cells has resulted in the development of new antivirals directed at virus-coded enzymes or proteins. Recent studies on antivirals that are activated by the herpes simplex virus type l-coded thy midine kinase from a prod rug to an antiviral drug have opened new directions in the development of effective antiviral drugs. The present book deals with a number of antiviral drugs effective against herpes simplex viruses and provides some insight into the molecular aspects of virus replication. It also throws light on the new approaches to the development of antiviral drugs. The molecular basis of the antiviral activity of new and known drugs and their possible use in chemotherapy of viral disease are presented in this book.
Download or read book Natural Products as Antiviral Agents written by C.K. Chu and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past fifty years, thousands of natural products have been isolated from plants, fungi, and bacteria. Apart from intense searches by pharmaceutical companies for medicinals and the concentrated effort mounted by the National Cancer Institute, many of these have not been tested in biological systems. The major reasons for this appear to be, at least, twofold. First, individual researchers looking for biologically active natural products will often isolate only small amounts of material sufficient to determine a structure and calculate the specific activity for their particular bioassay systems: insufficient funds preclude re-isolating the compound unless industrial potential is foreseen. Second, the difficulty with which original structures were proved prior to 1972. This required the isolation of relatively large quantities of a natural product and there followed extensive degradation, elemental analyses of the parent and its fragments, then synthesis, piece by piece, of the molecule. All this took time and energy. No wonder that when the structure was proved the chemist was enervated. And coupled to this was the fact that many chemists were not trained to test their materials in biological systems. In contrast, today a natural product can be isolated, its mass and molecular formula determined and, if there is some serendipity, crystals may be obtained for single crystal x-ray analysis. If conditions are near perfect, it is possible to isolate and identify a novel compound in a month.
Download or read book Human Herpesviruses written by Ann Arvin and published by Cambridge University Press. This book was released on 2007-08-16 with total page 1325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive account of the human herpesviruses provides an encyclopedic overview of their basic virology and clinical manifestations. This group of viruses includes human simplex type 1 and 2, Epstein–Barr virus, Kaposi's Sarcoma-associated herpesvirus, cytomegalovirus, HHV6A, 6B and 7, and varicella-zoster virus. The viral diseases and cancers they cause are significant and often recurrent. Their prevalence in the developed world accounts for a major burden of disease, and as a result there is a great deal of research into the pathophysiology of infection and immunobiology. Another important area covered within this volume concerns antiviral therapy and the development of vaccines. All these aspects are covered in depth, both scientifically and in terms of clinical guidelines for patient care. The text is illustrated generously throughout and is fully referenced to the latest research and developments.
Download or read book Molecular Basis of Specificity in Nucleic Acid Drug Interactions written by A. Pullman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the central problems in the study of the mechanism of DNA-ligand interactions is the existence and nature of sequence specificity with respect to the base pairs of DNA. The presence of such a specificity could be of particular significance because it might possibly mean the involvement of specific genes in the effectiveness of the different drugs. The elucidation of the factors responsible for the specificity could then be important for the development of compounds susceptible to contribute to the control of gene expression and also to the development of rationally conceived, improved new generations of effective and specific chemotherapeutic agents. Important recent achievements, experimental and theoretical, in the analysis of such sequence specificities open prospects for possible rapid progress in this field. The 23rd Jerusalem symposium was devoted to the exploration of these recent achievements in relation to many types of ligand, with special emphasis on antitumor drugs. All major types of interaction, intercalation, groove binding, covalent linking, coordination, have been considered. So was also the effect of the interaction on the structure and properties of the nucleic acids and the relationship between the interaction and biological or pharmacological activities. We feel that this Volume presents a relatively complete up-to-date account of the state of the art in this important field of research.
Download or read book Antiviral Drug Development written by Erik De Clercq and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Response Modifiers Interferons Double Stranded RNA and 2 5 Oligoadenylates written by W.E.G. Müller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological response modifiers are increasingly used in viral and cancer therapy. Since alterations of the immune system are the primary symptoms of HIV infection, especially therapies directed towards the modulation of the immune response have been under intense evaluation. This volume summarizes current knowledge of the interferon-based natural antiviral protection system including 2',5'-oligoadenylate and double-stranded RNA. It will also help to develop further a solid scientific rationale for the practical use of heterologous immunomodulators in the clinics.
Download or read book Advances in Molecular Biology and Targeted Treatment for AIDS written by Ajit Kumar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of HIV-l as the etiologic agent of acquired immunodeficiency syndrome (AIDS) in the early 1980s, remarkable progress has been made in both the basic understanding of the biological processes leading to AIDS and an accelerated effort in finding new treatments. As is often the case in rapidly advancing fields, most of the scientific discussions are best handled in specialized groups. The effort to organize a meeting on advances in molecular biology and targeted treatment for AIDS was an experiment of sorts to gather experts in selected areas of overlapping interests where advances in basic biology and its application in the development of new drugs could be discussed. Of necessity, the scope of the meeting had to be limited to maintain a certain focus. Important areas of rapid development in AIDS research, such as the vaccine development, epidemiology, animal models, etc. , had to be left out for more specialized meetings. The result, from all accounts, appeared to be quite a successful gathering, which provided a forum for informal discussions among scientists from industry and academic institutions. A remarkable feature of the AIDS virus is its genetic complexity and how some of its seemingly "extra genes" manage to regulate the normal functions of the host and most importantly its immune system.
Download or read book International Union of Pharmacology written by Paul Turner and published by Springer. This book was released on 2015-12-31 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clinical Aspects of Interferons written by Michel Revel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cytokines Part A written by C. Bondy and published by Elsevier. This book was released on 1997-04-18 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in molecular technology in recent years has caused an amazing growth of information about intercellular peptide messengers and their receptors. The number of characterized interleukins for example numbered just three six years ago and now there are at least 16. In addition, the number of described neutrophic peptides is around 30 and the number of receptors is ever increasing. Because many of these new peptide ligands and receptors were identified by "reverse genetic" techniques the understanding of their biological roles falls behind the knowledge of their molecular structures. However a new strain of functional studies has begun and animal models are developed allowing for further research into the biological roles of these messenger peptides and their receptors. Cytokines, the theme of this volume, describes a group of proteins identified primarily within the immune and hematopoietic systems. As many cytokines as possible are included along with their receptors providing the reader with a guide to an ever-changing field of scientific research.
Download or read book Scientific Directory and Annual Bibliography written by National Institutes of Health (U.S.) and published by . This book was released on 1985 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each issue lists papers published during the preceding year.
Download or read book Progress in Nucleic Acid Research and Molecular Biology written by and published by Academic Press. This book was released on 1986-11-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Nucleic Acid Research and Molecular Biology
Download or read book Advances in Antiviral Drug Design written by E. De Clercq and published by Elsevier. This book was released on 1996-04-23 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the series on Advances in Antiviral Drug Design is to regularly review the "state of the art" on emerging new developments in the antiviral drug research field, thereby spanning the conceptual design and chemical synthesis of new antiviral compounds, their structure-activity relationship, mechanism and target(s) of action, pharmacological behavior, antiviral activity spectrum, and therapeutic potential for clinical use. Volume 2 begins with a description of the antiviral potential of antisense oligonucleotides by J. Temsamani and S. Agrawal. According to the aims of the anitsense technology, these oligonucleotides should be targeted at specific viral antisense technology, these oligonucleotides should be targeted at specific viral mRNA sequences so that translation to the virus-specified proteins is blocked; this has been achieved for a number of oligomers, some of which are now in clinical trials for the treatment of HIV, HCMV, and human papilloma virus (HPV) infections. Then C.-S. Yuan, S. Liu, S.F. Wnuk, M.J. Robins and R.T. Borchardt assess the role of S-adenosylhornocysteine (AdoHcy) hydrolase as target for the design of antiviral agents with broad-spectrum antiviral activity. This is followed by an in-depth account on the design and synthesis of a number of first-, second- and third-generation AdoHcy hydrolase inhibitors and their mode of action at the enzyme level.V.E. Marquez provides a comprehensive description of the various carbocyclic (carba) nucleosides that have been synthesized and evaluated for antiviral activity. Although the number and diversity of the carba-nucleosides that have been found to be antivirally active (or inactive) is astonishingly high, there is no limit to further expansion of this fascinating class of molecules. For the various nucleoside analogues that have to be intracellularly phosphorylated to the 5'-triphosphate stage, to interact with their target enzyme (i.e., herpesviral DNA polymerase or retroviral revers transcriptase) the first phosphorylation step is often the rate-limiting step, and thus various strategies are envisaged by C. Perigoud, J.-L. Girardet, G. Gosselin and J.-L. Bach on how to bypass this initial phosphorylation and to deliver the nucleoside 5'-monophophate directly inside the cells.The HIV protease has been considered as a paradigm for rational drug design. The enzyme is among the best understood in terms of both structure and action, and because of its crucial role in the maturation of HIV, it has been vigorously pursued as a target for anti-HIV chemotherapy. In their comprehensive review of the multidisciplinary approach towards the development of HIV protease inhibitors A.G. Tomasselli, S. Thaisrivongs and R.L. Heinrikson highlight those protease inhibitors which have been brought forward to clinical trials.
Download or read book Cancer Therapy written by Natale D'Alessandro and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provided here is a comprehensive examination of the basic and clinical condition of three innovative and promising approaches to cancer therapy, which may support or even substitute chemotherapy: differentiation, immunomodulation, and inhibition of angiogenesis. Differentiation shouldnormalize neoplastic cells and make them compatible with the host. Its feasibility with retinoids, interferons, chemotherapeutic and other agents is discussed. Modulation by biological agents, cytotoxic effector cells and drugs is considered in attempts to boost endogenous antitumour defenses and/or to render neoplastic cells more susceptible to the immune attack of the host. Finally, the important aspect of interfering with tumour blood vessel development and function is taken into account. Consideringthe importance that chemotherapy has in cancer treatment and in view of a more and more integrated strategy, the relationship between the aforementioned approaches and chemotherapeutic agents and chemoresistance is treated in detail.
Download or read book Programmed Cell Death in Tumours and Tissues written by I.D. Bowen and published by Springer Science & Business Media. This book was released on 1990-07-31 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently there have been many advances in the understanding of the genetic basis of development and regular breakthroughs are being made in the field of tumour cell targeting. Both these areas of research are coming together in terms of their perception of programmed cell death.
Download or read book Viral Pathogenesis written by Michael G. Katze and published by Academic Press. This book was released on 2015-12-30 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viral Pathogenesis: From Basics to Systems Biology, Third Edition, has been thoroughly updated to cover topical advances in the evolving field of viral pathogenesis, while also providing the requisite classic foundational information for which it is recognized. The book provides key coverage of the newfound ability to profile molecular events on a system-wide scale, which has led to a deeper understanding of virus-host interactions, host signaling and molecular-interaction networks, and the role of host genetics in determining disease outcome. In addition, the content has been augmented with short chapters on seminal breakthroughs and profiles of their progenitors, as well as short commentaries on important or controversial issues in the field. Thus, the reader will be given a view of virology research with perspectives on issues such as biomedical ethics, public health policy, and human health. In summary, the third edition will give the student a sense of the exciting new perspectives on viral pathogenesis that have been provided by recent developments in genomics, computation, modeling, and systems biology. Covers all aspects of viral infection, including viral entry, replication, and release, as well as innate and adaptive immunity and viral pathogenesis Provides a fresh perspective on the approaches used to understand how viruses cause disease Features molecular profiling techniques, whole genome sequencing, and innovative computational methods Highlights the use of contemporary approaches and the insights they provide to the field
Download or read book Herpesviruses the Immune System and AIDS written by Yechiel Becker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt:
