Etude de l'interaction médicament/récepteur par spectrométrie de masse

Etude de l'interaction médicament/récepteur par spectrométrie de masse
Author: Paul Hannewald
Publisher:
Total Pages: 0
Release: 2008
Genre:
ISBN:

La découverte de nouveaux médicaments par le criblage biomoléculaire est au centre de la recherche pharmaceutique actuelle. La spectrométrie de masse, en tant que technique d'analyse fiable, reproductible, sensible, spécifique, compatible avec de nombreux types d'échantillons et permettant un débit d'analyse conséquent, trouve ainsi sa place dans les stratégies de recherche et développement de nouveaux médicaments. Le but de ce travail était de mettre en place et de valider une stratégie originale, impliquant la désorption/ionisation laser assistée par matrice couplée à la spectrométrie de masse (MALDI-MS) comme technique de détection, en vue du criblage de la liaison de composés à des cibles moléculaires applicable directement à des extraits de plantes. Le protocole que nous avons développé s'articule en trois étapes successives qui sont l'incubation des molécules à tester avec la cible moléculaire choisie (la tubuline ou la DHFR), l'élimination des composés non liés et enfin l'analyse par MALDI-TOFMS des composés liés. Notre démarche a fait l'objet d'une démarche de validation et les résultats pouvant être obtenus ont été discutés. Le débit pouvant être évalué à 60 échantillons en 1h50 à 3h30 soit de 18 à 32 échantillons à l'heure. Enfin, une démarche innovante nous a permis de prouver que notre approche pouvait être utile également en criblage secondaire. L'application de notre approche à des extraits bruts de plantes (Colchique d'Automne, Pervenche de Madagascar et Thé vert) à permis de mettre en évidence 20 molécules actives se liant à l'une ou l'autre des cibles moléculaires utilisées et d'évaluer l'affinité relative de l'une d'entre elles.

ICREEC 2019

ICREEC 2019
Author: Ahmed Belasri
Publisher: Springer Nature
Total Pages: 659
Release: 2020-06-10
Genre: Technology & Engineering
ISBN: 9811554447

This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Critical Care Nursing

Critical Care Nursing
Author: Linda Diann Urden
Publisher: Saunders
Total Pages: 1242
Release: 2010
Genre: Medical
ISBN:

Focusing on critical care nursing, this full-color text provides an examination of the important aspects of critical care nursing. It is organized in ten units around alterations in body systems.

An Introduction to Surface Analysis by XPS and AES

An Introduction to Surface Analysis by XPS and AES
Author: John F. Watts
Publisher: John Wiley & Sons
Total Pages: 307
Release: 2019-08-27
Genre: Technology & Engineering
ISBN: 1119417643

Provides a concise yet comprehensive introduction to XPS and AES techniques in surface analysis This accessible second edition of the bestselling book, An Introduction to Surface Analysis by XPS and AES, 2nd Edition explores the basic principles and applications of X-ray Photoelectron Spectroscopy (XPS) and Auger Electron Spectroscopy (AES) techniques. It starts with an examination of the basic concepts of electron spectroscopy and electron spectrometer design, followed by a qualitative and quantitative interpretation of the electron spectrum. Chapters examine recent innovations in instrument design and key applications in metallurgy, biomaterials, and electronics. Practical and concise, it includes compositional depth profiling; multi-technique analysis; and everything about samples—including their handling, preparation, stability, and more. Topics discussed in more depth include peak fitting, energy loss background analysis, multi-technique analysis, and multi-technique profiling. The book finishes with chapters on applications of electron spectroscopy in materials science and the comparison of XPS and AES with other analytical techniques. Extensively revised and updated with new material on NAPXPS, twin anode monochromators, gas cluster ion sources, valence band spectra, hydrogen detection, and quantification Explores key spectroscopic techniques in surface analysis Provides descriptions of latest instruments and techniques Includes a detailed glossary of key surface analysis terms Features an extensive bibliography of key references and additional reading Uses a non-theoretical style to appeal to industrial surface analysis sectors An Introduction to Surface Analysis by XPS and AES, 2nd Edition is an excellent introductory text for undergraduates, first-year postgraduates, and industrial users of XPS and AES.

Global Burden of Disease and Risk Factors

Global Burden of Disease and Risk Factors
Author: Alan D. Lopez
Publisher: World Bank Publications
Total Pages: 511
Release: 2006-04-02
Genre: Medical
ISBN: 0821362631

Strategic health planning, the cornerstone of initiatives designed to achieve health improvement goals around the world, requires an understanding of the comparative burden of diseases and injuries, their corresponding risk factors and the likely effects of invervention options. The Global Burden of Disease framework, originally published in 1990, has been widely adopted as the preferred method for health accounting and has become the standard to guide the setting of health research priorities. This publication sets out an updated assessment of the situation, with an analysis of trends observed since 1990 and a chapter on the sensitivity of GBD estimates to various sources of uncertainty in methods and data.

Livestock Policy Analysis

Livestock Policy Analysis
Author: International Livestock Research Institute
Publisher: ILRI (aka ILCA and ILRAD)
Total Pages: 268
Release: 1995-01-01
Genre: Animal industry
ISBN: 9789291460038

Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.

Fluorine Magnetic Resonance Imaging

Fluorine Magnetic Resonance Imaging
Author: Ulrich Flogel
Publisher: CRC Press
Total Pages: 426
Release: 2016-10-26
Genre: Medical
ISBN: 1315340933

Over the past decade, fluorine (19F) magnetic resonance imaging (MRI) has garnered significant scientific interest in the biomedical research community owing to the unique properties of fluorinated materials and the 19F nucleus. Fluorine has an intrinsically sensitive nucleus for MRI. There is negligible endogenous 19F in the body and thus there is no background signal. Fluorine-containing compounds are ideal tracer labels for a wide variety of MRI applications. Moreover, the chemical shift and nuclear relaxation rate can be made responsive to physiology via creative molecular design. This book is an interdisciplinary compendium that details cutting-edge science and medical research in the emerging field of 19F MRI. Edited by Ulrich Flögel and Eric Ahrens, two prominent MRI researchers, this book will appeal to investigators involved in MRI, biomedicine, immunology, pharmacology, probe chemistry, and imaging physics.

Clinical Chronopharmacology

Clinical Chronopharmacology
Author: Alain Reinberg
Publisher: CRC Press
Total Pages: 268
Release: 1990-07
Genre: Design
ISBN:

Periodical and predictable changes in biological susceptibility and response to a large variety of chemical agents, including drugs and food, have been documented since the early 1970s. This book provides a survey of clinically-documented research in chronopharmacology.

Phytochemicals in Nutrition and Health

Phytochemicals in Nutrition and Health
Author: Mark S. Meskin
Publisher: CRC Press
Total Pages: 221
Release: 2002-03-19
Genre: Medical
ISBN: 1420031694

Are soy isoflavones neuroprotective? Just how different is one species of Echinacea from another? Which phytochemicals will be effective as therapeutic agents in vivo? Supported by solid scientific research, Phytochemicals in Nutrition and Health helps provide answers to these and other probing questions concerning the mechanisms of action associat

Food Chemistry Research Developments

Food Chemistry Research Developments
Author: Konstantinos N. Papadopoulos
Publisher: Nova Publishers
Total Pages: 320
Release: 2008
Genre: Science
ISBN: 9781604562620

Food chemistry is the study of chemical processes and interactions of all biological and non-biological components of foods. The biological substances include such items as meat, poultry, lettuce, beer, and milk as examples. It is similar to biochemistry in its main components such as carbohydrates, lipids, and protein, but it also includes areas such as water, vitamins, minerals, enzymes, food additives, flavours, and colours. This discipline also encompasses how products change under certain food processing techniques and ways either to enhance or to prevent them from happening. An example of enhancing a process would be to encourage fermentation of dairy products with lactic acid; an example of a preventing process would be stopping the Maillard reaction on the surface of freshly cut Red Delicious apples whether by hand or mechanical methods. This book presents the recent research from around the world in this field.