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Drug Biomembrane Interaction Studies
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Book Synopsis Drug-Biomembrane Interaction Studies by : Rosario Pignatello
Download or read book Drug-Biomembrane Interaction Studies written by Rosario Pignatello and published by Elsevier. This book was released on 2013-10-31 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and development of drugs and new pharmaceutical formulations require a full characterization of the chemical and physicochemical events occurring at the level of the single active ingredients or excipients, as well as their reciprocal interaction. Thermal analysis techniques are among the most widely used methods to achieve this; among them, the Differential Scanning Calorimetry (DSC) technique, in which the thermotropic behaviour of a single substance or mixtures is analyzed as a function of a controlled temperature program. DSC is an accurate and rapid thermo-analytical technique, widely used by the pharmaceutical industry and in drug research to investigate several physico-chemical phenomena, such as polymorphism, melting and crystallization, purity, and drug-excipient interaction; as well as characterizing biomolecules such as genetic material.Drug-biomembrane interaction studies is written by scientists renowned for their work in the field of DSC applications to drug development and delivery, and especially to drug-biomembrane interaction studies. The book combines insights from biochemistry and physiology with those from structural biology, nanotechnology and biothermodynamics, to obtain a complete depiction of cell membranes and their functions. Summarizes and updates the recent development in a unique handbook format Consists of a combination of scientific updates within the field Contains chapters written by some of the highest-level experts in the field of DSC
Book Synopsis Drug–biomembrane interaction studies by : R. Pignatello
Download or read book Drug–biomembrane interaction studies written by R. Pignatello and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter will summarize recent information on cell membranes. Their structure, functions and the role of the various components are discussed, considering both their physiological tasks, such as mechanisms of drug internalization into cells, as well as membrane changes associated with or caused by particular disease states. Later chapters will discuss the possibility of testing biomembrane models to study their interaction with drugs and biological compounds.
Book Synopsis Drug–biomembrane interaction studies by : C. Carbone
Download or read book Drug–biomembrane interaction studies written by C. Carbone and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in using DSC to study the interaction between different compounds and biomembrane models has increased in the last 20years. This is confirmed by the number of published research studies concerning the feasibility of investigating the behavior of different molecules, such as local anesthetics, anticancer drugs, anti-inflammatory drugs, antioxidants, antibiotics, peptides, proteins, polymers, surfactants, genetic materials, macromolecules, and also drug delivery systems (DDSs). This chapter provides a general consideration of the current applications of DSC in evaluating the interaction of different biomolecules and biomembrane models, which will be presented more thoroughly in the succeeding chapters. In particular, a detailed description of the DSC technique for studying the interaction of surfactants, genetic materials, polymers, and DDSs with biomembrane models and biomolecule toxicity studies will be provided, taking into consideration the most recent literature.
Book Synopsis Drug–biomembrane interaction studies by : C. Carbone
Download or read book Drug–biomembrane interaction studies written by C. Carbone and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several DSC studies have given a better understanding of the molecular mechanisms of interaction of many non-steroidal anti-inflammatory agents (NSAIDs), such as indomethacin, ibuprofen, naproxen, nimesulide, ketoprofen and oxicam drugs with cell membranes or with simplified phospholipid-based biomembrane models. The consequent changes in the organization, fluidity and permeability of these membranes can, in some instances, be related to the pharmacological profile and toxicology of this drug class. The literature also attests the usefulness of DSC methods in studying the interaction of NSAID-loaded delivery systems (polymeric micro- and nanoparticles, micelles, lipid nanoparticles and prodrugs) with biomembrane models. DSC is also a valid tool for following the release of an anti-inflammatory drug from its carrier.
Book Synopsis Drug–biomembrane interaction studies by : R. Pignatello
Download or read book Drug–biomembrane interaction studies written by R. Pignatello and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: DSC studies of the interaction between drugs or other biologically active compounds with biomembrane models has often been associated or integrated with other analytical methodologies. The information gained from various techniques can depict the different and complex elements that compose such interactions. This chapter will summarize some recent examples of successfully combining DSC with other physico-chemical methods, such as spectroscopy, chromatography, calorimetry, the Langmuir–Blodgett film technique and microscopy.
Book Synopsis Drug–biomembrane interaction studies by : S. Giatrellis
Download or read book Drug–biomembrane interaction studies written by S. Giatrellis and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: DSC is a non-invasive experimental technique, which, besides other numerous applications, has been extensively applied in investigating the thermodynamic properties of synthetic and biological membranes. The calorimetric profiles of phase transitions of self-organized lipid membranes can provide valuable information about membrane interactions with biomolecules, pharmaceutical agents, other membranes, etc. The scope of this chapter is to review specific applications of DSC in studying membrane– nucleic acid interactions, which have attracted scientific attention for their biological relevance, as well as for their potential for biotechnological and pharmaceutical advances.
Book Synopsis Drug–biomembrane interaction studies by : T. Musumeci
Download or read book Drug–biomembrane interaction studies written by T. Musumeci and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antimicrobial agents are from different classes of molecules that suppress multiplication and growth of or kill microorganisms such as bacteria, fungi, or viruses. The precise mechanism of action of some antimicrobial agents is unknown but they must interact with or cross the cell membrane to have an effect. Identification of the damage induced by these compounds is difficult due to the complexity of cell membranes. Studying interactions using membrane models is a first step in obtaining elementary information about the effects of such drugs. We discuss interaction studies in the recent literature that use calorimetric techniques, regarding the mechanism of action or side effects of antimicrobial agents. For interaction studies with mimetic membrane models using DSC analysis, we will try to answer some key questions: (a) Does lipid composition affect the interaction? (b) Does the composition of bilayers influence the secondary structure of a peptide antimicrobial? (c) Does lipid polymorphism influence the activity and toxicity of the molecules? We underline the importance of phospholipids (neutral or anionic) chosen to produce biomembrane vesicles as models for the different studies.
Book Synopsis Drug–biomembrane interaction studies by : A. Wiśniewska-Becker
Download or read book Drug–biomembrane interaction studies written by A. Wiśniewska-Becker and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological membranes consisting of two main components, lipids and proteins, have many important functions in cells. Membrane structure, physical and chemical properties of lipids and proteins, and interactions between them determine membrane functions such as the barrier separating a cell from its environment, selective transport, cell recognition, signalling and compartmentalization of cellular processes. To investigate membrane structure and dynamics, and the interactions between membrane components on a molecular level, simplified artificial models of biological membranes have been developed. Various biophysical techniques are used with these models to study membrane properties and their changes under different environmental factors. This chapter describes common membrane models and some of their applications. There are two groups of models: vesicular models (micelles, bicelles and liposomes) and planar ones (lipid monolayers, supported lipid bilayers, black lipid membranes). The advantages and disadvantages of both types are discussed as well as their usefulness for particular biophysical techniques.
Book Synopsis Drug–biomembrane interaction studies by : M. Grazia Sarpietro
Download or read book Drug–biomembrane interaction studies written by M. Grazia Sarpietro and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter describes a method for evaluating the release of a drug by different delivery systems to biomembrane models made of multilamellar and unilamellar vesicles, using DSC techniques. First, different delivery systems as well as biomembrane models are described followed by a detailed description of the experimental protocols that are the basis of the technique. A drug-loaded delivery system is incubated with the biomembrane model and drug release is evaluated by considering the effect of the drug on the biomembrane’s thermotropic behaviour, and comparing the experimental data with those of the free drug. Finally, examples of the application of this technique are given.
Book Synopsis Drug–biomembrane interaction studies by : M.H. Chiu
Download or read book Drug–biomembrane interaction studies written by M.H. Chiu and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: DSC is a straightforward, non-perturbing thermodynamic technique first developed in the early 1960s. The large number of parameters and the high sensitivity has made DSC one of the key calorimetric tools used for investigating thermodynamic properties of biopolymers, proteins, peptides and nucleic acids. There are numerous reviews covering the different macromolecular applications of DSC: this chapter will primarily focus on proteins and nucleic acids.
Book Synopsis Drug–biomembrane interaction studies by : A. Raudino
Download or read book Drug–biomembrane interaction studies written by A. Raudino and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter we briefly introduce the main physical principles of DSC as well as related techniques. After a quick survey of the more common experimental techniques, we describe the thermodynamics and kinetics of events accompanying a heating/cooling process. We focus on lipid membranes of one or more components. Both the thermotropic and the barotropic behaviours are investigated, as well as the water/lipid ratio. The effect of foreign impurities (hydrophobic molecules, proteins) dissolved in the lipid matrix on DSC thermotropic behaviour is also investigated, either in the ideal mixing model or for non-ideal miscibility. In the poor miscibility limit, lipids and hydrophobic impurities may undergo phase separation. The mechanisms of phase separation are discussed and related to experimental DSC features. Out-of-equilibrium phenomena, such as the different thermotropic behaviour between heating and cooling modes or the kinetics of lipid/water partitioning, are explained using simple models for phase transitions.
Book Synopsis Drug–biomembrane interaction studies by : A. Fortunato
Download or read book Drug–biomembrane interaction studies written by A. Fortunato and published by Elsevier Inc. Chapters. This book was released on 2013-10-31 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In DSC, the heat flow in and out of a sample and a reference material is measured as a function of temperature as the sample is heated, cooled, or held isothermally at constant temperature. The measurement signal is the energy absorbed or released by the sample in milliwatts. DSC can detect endothermic and exothermic effects, determine peak areas (transition and reaction enthalpies), determine temperatures that characterize a peak or other effects, and measure specific heat capacity. Since the end of the nineteenth century, DSC has been improved and optimized. With the numerous technological innovations, in both hardware and software, it can explore new and demanding applications. Different measurement principles, sensors, signal processing, accessories, and evaluation capabilities make differential scanning calorimetry one of the most common and versatile techniques in material characterization. Today DSC benefits from technological solutions used previously for other applications (MEMS technology, optical devices, and parameter estimation methods).
Book Synopsis Drug-Membrane Interactions by : Joachim K. Seydel
Download or read book Drug-Membrane Interactions written by Joachim K. Seydel and published by Wiley-VCH. This book was released on 2009-07-10 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Barrier, reservoir, target site - those are but some of the possible functions of biological lipid membranes in the complex interplay of drugs with the organism. A detailed knowledge of lipid membranes and of the various modes of drug-membrane interaction is therefore the prerequisite for a better understanding of drug action. Many of today's pharmaceuticals are amphiphilic or catamphiphilic, enabling them to interact with biological membranes. Crucial membrane properties are surveyed and techniques to elucidate drug-membrane interactions presented, including computer-aided predictions. Effects of membrane interaction on drug action and drug distribution are discussed, and numerous examples are given. This unique reference volume builds on the authors' long experience in the study of drug-membrane interaction. Recommended reading for everyone involved in pharmaceutical research.
Book Synopsis Electrochemical Studies on Drug-Membrane Interaction by : Subramaniam Rameshkumar
Download or read book Electrochemical Studies on Drug-Membrane Interaction written by Subramaniam Rameshkumar and published by . This book was released on 2018-04-17 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Biology of The Cell by : Bruce Alberts
Download or read book Molecular Biology of The Cell written by Bruce Alberts and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Trends and Future Developments on (Bio-) Membranes by : Angelo Basile
Download or read book Current Trends and Future Developments on (Bio-) Membranes written by Angelo Basile and published by Elsevier. This book was released on 2018-10-16 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Trends and Future Developments on (Bio-) Membranes: Membrane Processes in the Pharmaceutical and Biotechnological field presents the main membrane techniques along with their basic principles, mode of operations, and applications. It covers well-known techniques such as ultrafiltration and membrane chromatography, while also exploring emerging membrane technologies which are finding their way in pharmaceutical and biotechnology industries, including membrane emulsification, membrane bioreactors, and solvent-resistant nanofiltration. State-of-the-art applications of membrane systems in areas such as drug delivery and virus removal are also investigated by leading experts in the field. Current Trends and Future Developments on (Bio-) Membranes: Membrane Processes in the Pharmaceutical and Biotechnological field is a definitive reference for academics, post-graduates, and researchers in the subjects of biochemical engineering, pharmaceutics, and biotechnology. It is also useful to R&D companies and institutions in these areas, specifically those interested in bioseparations, biopurification, bioproduction, and drug delivery. Offers an overview of classical membrane-based separation techniques such as ultrafiltration, microfiltration and virus filtration Discusses emerging membrane-based separation techniques such as nofiltration in the presence of solvent, membrane emulsification and membrane crystallization Outlines their applications to bioseparation, biopurification and bioproduction Includes examples in the production of vaccines, antibiotics, biomolecules, drugs, DNA and cells Lists membranes systems for drug delivery like liposomes, nanocapsules and bilayer membranes
Book Synopsis Drug-like Properties: Concepts, Structure Design and Methods by : Li Di
Download or read book Drug-like Properties: Concepts, Structure Design and Methods written by Li Di and published by Elsevier. This book was released on 2010-07-26 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of the thousands of novel compounds that a drug discovery project team invents and that bind to the therapeutic target, typically only a fraction of these have sufficient ADME/Tox properties to become a drug product. Understanding ADME/Tox is critical for all drug researchers, owing to its increasing importance in advancing high quality candidates to clinical studies and the processes of drug discovery. If the properties are weak, the candidate will have a high risk of failure or be less desirable as a drug product. This book is a tool and resource for scientists engaged in, or preparing for, the selection and optimization process. The authors describe how properties affect in vivo pharmacological activity and impact in vitro assays. Individual drug-like properties are discussed from a practical point of view, such as solubility, permeability and metabolic stability, with regard to fundamental understanding, applications of property data in drug discovery and examples of structural modifications that have achieved improved property performance. The authors also review various methods for the screening (high throughput), diagnosis (medium throughput) and in-depth (low throughput) analysis of drug properties. Serves as an essential working handbook aimed at scientists and students in medicinal chemistry Provides practical, step-by-step guidance on property fundamentals, effects, structure-property relationships, and structure modification strategies Discusses improvements in pharmacokinetics from a practical chemist's standpoint
