Download or read book Peptide Transport and Delivery into the Central Nervous System written by Laszlo Prokai and published by Birkhäuser. This book was released on 2012-12-06 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypo- or hypersecretion, alteration in storage, release, catabolism, and post-translational processing of neuropeptides are associated with the etiology of many diseases affecting the central nervous system (CNS). Various peptides native to the brain and the spinal cord, as well as various synthetic peptides, peptide analogues and peptidomimetics developed as their agonists or antagonists could be useful in the treatment of these CNS maladies. However, peptides face a formidable obstacle in reaching the intended site of action due to the existence of the blood-brain barrier (BBB), a vital element in the regulation of the internal environment of the brain and the spinal cord. After reviews on the role and neuropharmaceutical potential of peptides, properties of the BBB in the context of peptide transport in the CNS and potential transport mechanisms to cross the BBB, this volume discusses the development, present state-of-the-art and future trends of various strategies to overcome this major obstacle to peptide pharmacotherapy involving the CNS. Chapters are devoted to cover invasive approaches that circumvent the BBB by direct administration into the brain or the spinal cord and by transiently opening the tight junctions of or permeabilizing the endothelial cells separating the systemic circulation from the interstitial fluid of the CNS. Subsequently, physiologically based strategies that utilize biological carriers to gain access to the CNS are discussed in detail, followed by methods encompassing prodrug and chemical delivery/targeting strategies, which aim at altering the properties of the peptide to enhance BBB transport, and drug delivery strategies based on peptide vectors. Finally, a comparative evaluation on the present status and perspectives of the techniques is presented.

Download or read book Peptide and Amino Acid Transport Mechanisms in the Central Nervous System written by Ljubiša Rakić and published by Stockton Press. This book was released on 1988 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses the regulation, within the brain extracellular fluid, of peptide and amino acid levels, particularly neurotransmitters and neuromodulators. Particular attention is devoted to the way in which peptides may either penetrate the blood-brain barrier or alter its permeability to other solutes. Focuses on central nervous system disease, especially in designing drugs and agents which will penetrate the blood-brain barrier and expert central nervous actions. Annotation copyrighted by Book News, Inc., Portland, OR

Download or read book Drug Delivery to the Central Nervous System written by Kewal K. Jain and published by Humana Press. This book was released on 2009-12-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Playing an important role in the treatment of neurological disorders, the delivery of drugs to central nervous system (CNS), both administered directly and administered systematically for targeted action, encounters a major challenge in the form of the blood-brain barrier (BBB), which limits the access of drugs to the brain substance. In Drug Delivery to the Central Nervous System, experts in the field present essential methods used to deliver therapeutics across the BBB, both in experimental animals and in humans. In addition to those methods, several overviews of innovative methods and their applications are presented in order to give a glimpse of the future of this research. As a volume in the successful Neuromethods series, this book presents its protocols with the kind of detailed description and implementation advice that is crucial for getting optimal results. Authoritative and cutting-edge, Drug Delivery to the Central Nervous System serves as an ideal guide to scientists continuing to pursue knowledge of the delicate interactions between pharmaceuticals and the brain.

Download or read book Drug Delivery to the Brain written by Margareta Hammarlund-Udenaes and published by Springer Science & Business Media. This book was released on 2013-12-03 with total page 737 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of new CNS drugs is notoriously difficult. Drugs must reach CNS target sites for action and these sites are protected by a number of barriers, the most important being the blood –brain barrier (BBB). Many factors are therefore critical to consider for CNS drug delivery, e.g. active/passive transport across the BBB, intra-brain distribution, and central/systemic pharmacokinetics, to name a few. Neurological disease and trauma conditions add further complexity because CNS barriers, drug distribution and pharmacokinetics are dynamic and often changed by disease/trauma. Knowledge of all these factors and their interplay in different conditions is of utmost importance for proper CNS drug development and disease treatment. In recent years much information has become available for a better understanding of the many factors important for CNS drug delivery and how they interact to affect drug action. This book describes small and large drug delivery to the brain with an emphasis on the physiology of the BBB and the principles and concepts for drug delivery across the BBB and distribution within the brain. It contains methods descriptions for studying drug delivery, routes and approaches of administering drugs into the brain, the influence of disease, and drug industry perspectives. Therewith, it contributes to an in-depth understanding of the interplay between brain (patho)-physiology and drug characteristics. Furthermore, the content is designed to be both cutting-edge and educational, so that the book can be used in high-level training of academic and industry scientists with full references to original publications. ​

Download or read book Blood Brain Barrier written by David Kobiler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vasculature of the central nervous system (eNS) is characterized by the existence of the blood-brain barrier (BBB), which can be regarded as both an anatomical and physiological phenomenon. The BBB is formed by a complex cellular system of endothelial cells, astroglia, pericytes, perivascular macrophages and a basal membrane, although the anatomic substrate of the BBB is the interendothelial tight junctions that form a continuous sealing. The BBB serves as an exquisitely controlled, functional gate to the eNS. It not only protects the brain from agents in the blood that could impair neurological function, but also controls the influx and efflux of numerous substances to maintain proper homeostasis and provide the brain with necessary nutrients. The structural and functional integrity of the BBB was shown to be dramatically altered during various diseases of the eNS, including neoplasia, ischemia, trauma, hypertension, inflammation and epilepsy. Recent years research has partially elucidated the mechanisms underlying the development of some of these brain disorders as well as the pathways used by different pathogens, like bacteria and viruses, to initiate eNS infections. The development of in vitro models of the BBB had instrumental role in the understanding of the involvement of the BBB in the pathogenesis of several eNS diseases. The intimate, functional association between the function of the brain and the activity of the BBB makes the later a target for pharmacological modulation that will expand the therapeutic possibilities for a range of neurological diseases.

Download or read book Blood brain Barrier Shuttles written by Pol Arranz Gibert and published by . This book was released on 2016 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The work of this thesis is based on research on peptides able to cross the blood-brain barrier and their use as tools to enable the delivery of drugs into the brain. The blood-brain barrier (BBB) is a permeable but selective barrier that tightly regulates the transport into the central nervous system (CNS). In this regard, therapeutic treatments at the CNS are hampered by the presence of this barrier (BBB). Thus, diverse strategies have been developed to overcome it. Blood-brain barrier shuttles are peptides able to cross this barrier and deliver drugs into the brain. Peptides are privileged structures from the therapeutic point of view, they share properties from small organic molecules and large biologics: the synthesis through solid-phase peptide synthesis (SPPS) enables a straightforward method to obtain them with high purity and at the same time they can be purified and characterized like small organic compound. In addition, their structure is present in nature and thus the risk of toxicity is lower or more predictable compared with organic compounds, and their larger structure enables to obtain more selective and stronger interactions with targets. In addition, peptides have been shown to cross the BBB by diverse transport mechanisms and thus enabling to select the best one for each therapy and drug. In this thesis a family of BBB shuttles crossing by passive diffusion (based on phenylproline) have been improved from a parent peptide shuttle (based on N-methyl-phenylalanine). The solubility was three orders of magnitude superior and the transport capacity was maintained upon cargo attachment. In addition, the role of stereochemistry in passive diffusion in biological membranes was demonstrated. A method which combined the use of MALDI-TOF MS and in vitro cell-based models of the BBB enabled the increase in sensitivity for transport quantification of three orders of magnitude compared to RP-HPLC-PDA. Additionally, a BBB shuttle library was evaluated and quantified by this novel methodology. Two new analogs showed better performance when evaluated in these in vitro cell-based models. Immunogenicity of BBB shuttle peptides made by L- or D-amino acids was evaluated and compared. Both peptide shuttles showed low immunogenic response in mice, however, the response to those made with D- amino acids was lower. Finally, the applicability of these peptide shuttles for a therapeutic use was considered for Friedreich's Ataxia, a monogenic recessive disease. Both a protein replacement therapy and a gene therapy for the central nervous system were attempted by coupling covalently BBB shuttles to the affected protein or viruses, respectively. The protein replacement therapy was impeded by the high rate of proteolysis of the protein used. On the other hand, novel methods of conjugation of BBB shuttles into enveloped viruses (Herpes simplex Virus type 1; HSV- 1) were developed. These modified viral particles were subsequently characterized through a range of methods comprising molecular biology tools (SDS-PAGE, western blots), proteomics (mass spectrometry) and biophysical tools (dynamic light scattering and z-potential)". -- TDX.

Download or read book Nanotechnology Methods for Neurological Diseases and Brain Tumors written by Yasemin Gürsoy Özdemir and published by Academic Press. This book was released on 2017-07-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology Methods for Neurological Diseases and Brain Tumors: Drug Delivery across the Blood-Brain Barrier compiles the latest (and future potential) treatment strategies for brain tumors and neurological diseases, in particular Alzheimer's, Parkinson's and stroke, those that bypass the blood/brain barrier. The current understanding of brain drug delivery and access is discussed in Chapter One, with the next section focusing on the implementation of the nose-to-brain intranasal route in brain-targeted drug delivery. In addition, nanotechnology-based brain drug delivery is covered in Chapter Three. This avenue offers impressive improvement in the treatment of neurological diseases and brain tumors by using bio-engineered systems that interact with biological systems at a molecular level. In Chapter Four, emphasis is placed on the need for brain-targeted experimental models that mimic disease conditions. Final chapters discuss the very latest advances in targeted treatment strategies for neurological diseases and brain tumors.

Download or read book The Blood Brain Barrier BBB written by Gert Fricker and published by Springer. This book was released on 2014-10-24 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medicinal chemistry is both science and art. The science of medicinal chemistry offers mankind one of its best hopes for improving the quality of life. The art of medicinal chemistry continues to challenge its practitioners with the need for both intuition and experience to discover new drugs. Hence sharing the experience of drug research is uniquely beneficial to the field of medicinal chemistry. Drug research requires interdisciplinary team-work at the interface between chemistry, biology and medicine. Therefore, the topic-related series Topics in Medicinal Chemistry covers all relevant aspects of drug research, e.g. pathobiochemistry of diseases, identification and validation of (emerging) drug targets, structural biology, drugability of targets, drug design approaches, chemogenomics, synthetic chemistry including combinatorial methods, bioorganic chemistry, natural compounds, high-throughput screening, pharmacological in vitro and in vivo investigations, drug-receptor interactions on the molecular level, structure-activity relationships, drug absorption, distribution, metabolism, elimination, toxicology and pharmacogenomics. In general, special volumes are edited by well known guest editors.

Download or read book Drug Delivery to the Central Nervous System written by Kewal K. Jain and published by Humana. This book was released on 2016-08-23 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Playing an important role in the treatment of neurological disorders, the delivery of drugs to central nervous system (CNS), both administered directly and administered systematically for targeted action, encounters a major challenge in the form of the blood-brain barrier (BBB), which limits the access of drugs to the brain substance. In Drug Delivery to the Central Nervous System, experts in the field present essential methods used to deliver therapeutics across the BBB, both in experimental animals and in humans. In addition to those methods, several overviews of innovative methods and their applications are presented in order to give a glimpse of the future of this research. As a volume in the successful Neuromethods series, this book presents its protocols with the kind of detailed description and implementation advice that is crucial for getting optimal results. Authoritative and cutting-edge, Drug Delivery to the Central Nervous System serves as an ideal guide to scientists continuing to pursue knowledge of the delicate interactions between pharmaceuticals and the brain.

Download or read book Peptide and Protein Delivery written by Chris Van Der Walle and published by Academic Press. This book was released on 2011-05-12 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing area of peptide and protein therapeutics research is of paramount importance to medical application and advancement. A needed reference for entry level researchers and researchers working in interdisciplinary / collaborative projects, Peptide and Protein Delivery addresses the current and emerging routes for delivery of therapeutics. Covering cerebral delivery, pulmonary delivery, transdermal delivery, intestinal delivery, ocular delivery, parenteral delivery, and nasal delivery, this resource offers an overview of the main routes in therapeutics. Researchers across biochemistry, pharmaceutical, molecular biology, cell biology, immunology, chemistry and biotechnology fields will find this publication invaluable for peptide and protein laboratory research. - Discusses the most recent data, ideas and concepts - Presents case studies and an industrial perspective - Details information from the molecular level to bioprocessing - Thought provoking, for the novice to the specialist - Timely, for today's biopharmaceuticals market

Download or read book Peptide Drug Delivery to the Brain written by William M. Pardridge and published by Raven Press (ID). This book was released on 1991 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses new and established strategies for delivering peptides and antibodies through the blood-brain barrier. It reviews concepts on blood-brain barrier transport biology, assesses the utility and limitations of traditional brain drug delivery methods and describes new drug delivery techniques.

Download or read book Biology and Physiology of the Blood Brain Barrier written by Pierre-Olivier Couraud and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The endothelial cells of the cerebral vasculature constitute, together with perivascular elements (astrocytes, pcricytes, basement membrane), the blood-brain barrier (BBB), which strictly limits and specifically controls the exchanges between the blood and the cerebral extracellular spacc.The existence of such a physical, enzymatic, and active barrier isolating the central nervous system has broad physiological, biological, pharmacological, and patho logical consequences, most of which are not yet fully elucidated. The Cerebral Vascular Biology conference (CVB '95) was organized and held at the "Carre des Sciences" in Paris on July I 0-12, 1995. Like the CVB '92 conference held in Duluth, Minnesota, three years ago, the objectives were to provide a forum for presentation of the most recent progresses and to stimulate discussions in the ticld of the biology, physiology. and pathology of the blood-brain barrier. The Paris conference gathered more than !50 participants. including investigators in basic neuroscience, physicians. and stu dents, who actively contributed to the scientific program by their oral or poster presentations. This volume contains a collection of short articles that summarize most of the new data that were presented at the conference. Six thematic parts focus on physiological transports. drug delivery, multidrug resistance P-glycoprotein, signal transduction at the BBB. interactions between the immune system and the cerebral endothelial cells, and the blood-brain barrier-related pathologies in the central nervous system. In addition, two introductory articles present new insights in the rapidly evolving topics of cerebral angiogenesis and gene transfer to the brain.

Download or read book Drug Transport Across the Blood brain Barrier written by A.G. de Boer and published by CRC Press. This book was released on 1997-04-08 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of various in vitro and in vivo techniques has considerably advanced the research on drug transport and metabolism across the blood-brain barrier (BBB). These specialized and sophisticated experimental strategies are of fundamental importance if one is to gain a greater understanding of enhanced and selective drug delivery to the brain. The reader will find in this book methods for in vitro endothelial/astrocyte cell culture models, and for in vivo intracerebral microdialysis to study drug tranport across the BBB. This book, however, is not merely a laboratory manual consisting of recipes for BBB research; it permits the presentation of the different methods in fine detail, revealing tricks and short cuts that frequently do not appear in the literature. The researcher is well aware that differences (subtle or otherwise) in experimental steps used in different laboratories may influence the outcome of any particular procedure. The book also illustrates the accessibility and the application of the different methods in different species. Background information of the protocol is given in every chapter, which also contains a literature list that the reader may wish to refer to for further information. This volume will be invaluable to basic researchers as well as to those involved in the search for agents suitable for pharmaceutic intervention in the central nervous system.

Download or read book The Neurology of AIDS written by Howard E. Gendelman, MD and published by Oxford University Press. This book was released on 2011-11-29 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: From basic science to clinical care, to epidemiological disease patters, The Neurology of AIDS is the only complete textbook available on AIDS neurology and the only one comprehensive enough to stand alone in each segment of study in brain disorders affected by the human immunodeficiency virus. It is an indispensable resource for students, resident physicians, practicing physicians, and for researchers and experts in the HIV/AIDS field. Oxford Clinical Neuroscience is a comprehensive, cross-searchable collection of resources offering quick and easy access to eleven of Oxford University Press's prestigious neuroscience texts. Joining Oxford Medicine Online these resources offer students, specialists and clinical researchers the best quality content in an easy-to-access format.

Download or read book Peptide based Drug Design written by Michael D. Taylor and published by Wiley-VCH. This book was released on 1995-04-13 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peptide-based drugs resemble natural peptides in their activity and, thus, increased understanding of peptide transport and metabolism permit optimization of the delivery properties of these new therapeutic agents. After an introduction to basic advances in molecular biology, drug metabolism, and drug transport of amino acids and peptides, this volume deals with intestinal peptide transport, liver peptide transport, peptide delivery through the blood-brain barrier, peptide transport in microorganisms, approaches to limiting peptide metabolism, and experimental systems to evaluate peptide transport and metabolism. Annotation copyright by Book News, Inc., Portland, OR

Download or read book Neurotransmitters and Neuromodulators written by Oliver von Bohlen und Halbach and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete update of the highly acclaimed handbook with data on all neurotransmitters and the majority of neuromodulators. The coverage is now even more comprehensive, with 15% more entries on neuropeptides, "classic" neurotransmitters and related substances in a clear, alphabetical format. The methodological section has been expanded by 50% and now includes color figures, plus new chapters on genomics, proteomics, databases, microarrays, MALDI-TOF, neutrophins, FGF, endocannabinoids and neuroimaging. The text provides clearly structured information on the biosynthesis and degradation, localization, receptors, signal transduction pathways, and biological effects in the central nervous system, with all substances uniformly treated for an easy comparison of data. Furthermore, introductory chapters on receptors, transporters, and the blood-brain barrier make this an indispensable tool for researchers, teachers, and advanced students, as well as a must-have for every neuroscientist.

Download or read book Progress in drug research 50 1998 written by Ernst Jucker and published by Springer Science & Business Media. This book was released on 1998 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Drug Research is a prestigious book series (founded in 1959) which provides extensive expert-written reviews on a wide spectrum of highly topical areas in current pharmaceutical and pharmalogical research. Each volume contains fully cross-referencing indexes which link the volumes together, forming a virtually encyclopaedic work. The series thus serves as an important, time-saving source of information for researchers concerned with drug research and all those who need to keep abreast of the many recent developments in the quest for new and better medicines. Volume 50 in the series includes: P.N. Kaul: Drug discovery: Past, present and future M. Rohmer: Isoprenoid biosynthesis via the mevalonate -- independent route, a novel target for antibacterial drugs G. Edwards and A.H. Weston: Endothelium, -derived hyperpolarizing factor -- a critical appraisal R.W. Rockhold: Glutamatic involvement in psychomotor stimulant action J.M. Colacino and K.A. Staschke: The identification and development of antiviral agents for the treatment of chronic hepatitis B virus infection T.D. Johnson: Polyamines and cerebral ischemia