Apports de la biochimie et de la protéomique dans l'étude de modifications du métabolisme cellulaire à travers deux exemples

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (881 download)

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Book Synopsis Apports de la biochimie et de la protéomique dans l'étude de modifications du métabolisme cellulaire à travers deux exemples by : Françoise Torterotot-Immel

Download or read book Apports de la biochimie et de la protéomique dans l'étude de modifications du métabolisme cellulaire à travers deux exemples written by Françoise Torterotot-Immel and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Un certain nombre de maladies neurodégénératives, comme la maladie de Creutzfeld-Jacob chez l'homme ou la maladie dite de "la vache folle" chez les bovins, sont dues au mauvais repliement d'une protéine cellulaire dite prion. Plusieurs protéines prions ont été identifiées chez des microorganismes comme Ure2p chez Saccharomyces cerevisiae ou HET-s chez Podospora anserina. Ces protéines sont non pathogènes pour l'homme et se comportent comme le prion de mammifères c'est à dire en s'assemblant également en fibres amyloïdes. Chez S. cerevisiae, la protéine Ure2p est associée au phénotype prion [URE3] et est agrégée dans ce type de cellule. Dans un premier temps, nous avons montré que les agrégats [URE3] obtenu in vivo étaient d'une nature différente des fibres amyloïdes produites in vitro. Dans un second temps, la technicité acquise au cours de l'étude biochimique d'Ure2p m'a permis d'aborder celle d'un orthologue, Ure2p de Saccharomyces paradoxus (Ure2p-Sp), qui n'est pas un prion "in vivo". Après avoir montré que les deux protéines sous forme soluble présentent les mêmes caractéristiques biochimiques, je montre qu'elles possèdent la même propension à former des fibres amyloïdes. Dans le cadre de cette étude nous montrons également que ces fibres sont infectieuses laissant penser qu'in vivo cette incapacité de la protéine Ure2p-Sp à basculer sous forme prion est plutôt due à une défaillance du mécanisme de propagation des prions plutôt qu'à une différence de la structure amyloïde proprement dite. Enfin, nous avons pu montrer qu'il était possible de transformer une protéine amyloïde non toxique en une protéine toxique en ne changeant que quelques acides aminés. En poursuivant cette étude par une étude in vitro, j'ai également pu observer que la protéine toxique s'organisait in vitro en de courtes fibres amyloïdes qui pouvaient mimer les intermédiaires responsables de la toxicité au cours des maladies neurodégénératives. Si dans cette première partie l'apport de la biochimie dans l'étude ciblée de différentes protéines amyloïdes de champignons ascomycètes est évident, l'étude des protéines peut également se faire par une approche biochimique globale sans a priori comme dans l'étude de la réponse protéique d'une plante à un stress environnemental. Grâce au séquençage des génomes, la biochimie post-génomique connait un essor exceptionnel et permet de mettre en évidence de nouvelles protéines dans le cadre d'études fonctionnelles. Dans ce but, j'ai mis en oeuvre une technique de protéomique différentielle : l'électrophorèse bidimensionnelle de type DiGE (Differential in-Gel Electrophoresis) dans le cadre de l'étude du protéome d'une plante invasive, le solidage Solidago canadensis, soumise à un stress d'origine anthropique. Cette étude protéomique vient en complément d'une étude phytosociologique des plantes capables de coloniser un sol très dégradé mais aussi de données de biodiversité, croissance et de mesures de la réponse anti-oxydante de ces végétaux. Cette analyse a révélé que sur des sols pollués, le solidage parvient non seulement à produire l'énergie nécessaire à sa croissance mais il parvient également à synthétiser les intermédiaires de biosynthèse du glutathion et des phytochélatines. Ainsi, le solidage est capable de s'adapter à ce milieu ce qui lui permet d'être tolérant à la pollution. Mes premiers résultats de biochimie post-génomique offrent de nouvelles bases pour la compréhension des mécanismes de tolérance au milieu de certaines plantes permettant le développement de technologies innovantes de phytorémédiation afin de restaurer les sols pollués.

Optimisations des stratégies analytiques quantitatives en protéomique

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (91 download)

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Book Synopsis Optimisations des stratégies analytiques quantitatives en protéomique by : Marine Plumel

Download or read book Optimisations des stratégies analytiques quantitatives en protéomique written by Marine Plumel and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'analyse protéomique consiste à caractériser l'ensemble des protéines exprimées dans une cellule, dans un état et à un temps donné (le protéome). L'analyse protéomique tend aujourd'hui à fournir des informations quantitatives, cependant, pour pouvoir générer des données fiables et sensibles, des optimisations méthodologiques doivent être apportées à chaque problématique biologique. L'objectif de cette thèse a été d'adapter les stratégies protéomiques quantitatives existantes à diverses problématiques biologiques. Ce travail de thèse a ainsi contribué à apporter des résultats originaux concernant l'étude de désordres métaboliques. Il a également permis la mise au point d'une méthode de suivi du statut reproducteur de la tortue Luth. Finalement, il a permis d'évaluer la réponse d'une lignée cellulaire hépatique à une intoxication chronique à l'acide valproique. Ces données alimenteront des algorithmes de prédiction de toxicité hépatique chronique au travers du consortium NOTOX (EU).

Topics in Romance Syntax

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Publisher : ISSN
ISBN 13 : 9783112420218
Total Pages : 0 pages
Book Rating : 4.4/5 (22 download)

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Book Synopsis Topics in Romance Syntax by : Osvaldo Jaeggli

Download or read book Topics in Romance Syntax written by Osvaldo Jaeggli and published by ISSN. This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The architecture of the human language faculty has been one of the main foci of the linguistic research of the last half century. This branch of linguistics, broadly known as Generative Grammar, is concerned with the formulation of explanatory formal accounts of linguistic phenomena with the ulterior goal of gaining insight into the properties of the 'language organ'. The series comprises high quality monographs and collected volumes that address such issues. The topics in this series range from phonology to semantics, from syntax to information structure, from mathematical linguistics to studies of the lexicon. To discuss your book idea or submit a proposal, please contact Birgit Sievert

Oxidative Stress and Redox Regulation

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Publisher : Springer Science & Business Media
ISBN 13 : 9400757875
Total Pages : 488 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Oxidative Stress and Redox Regulation by : Ursula Jakob

Download or read book Oxidative Stress and Redox Regulation written by Ursula Jakob and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many physiological conditions such as host defense or aging and pathological conditions such as neurodegenerative diseases, and diabetes are associated with the accumulation of high levels of reactive oxygen species and reactive nitrogen species. This generates a condition called oxidative stress. Low levels of reactive oxygen species, however, which are continuously produced during aerobic metabolism, function as important signaling molecules, setting the metabolic pace of cells and regulating processes ranging from gene expression to apoptosis. For this book we would like to recruit the experts in the field of redox chemistry, bioinformatics and proteomics, redox signaling and oxidative stress biology to discuss how organisms achieve the appropriate redox balance, the mechanisms that lead to oxidative stress conditions and the physiological consequences that contribute to aging and disease.

Critical Care Nursing

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Publisher : Saunders
ISBN 13 :
Total Pages : 1242 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Critical Care Nursing by : Linda Diann Urden

Download or read book Critical Care Nursing written by Linda Diann Urden and published by Saunders. This book was released on 2010 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Molecular Mechanisms of Hormone Action

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ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Molecular Mechanisms of Hormone Action by : Gesellschaft für Biologische Chemie. Colloquium

Download or read book Molecular Mechanisms of Hormone Action written by Gesellschaft für Biologische Chemie. Colloquium and published by . This book was released on 1989 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Abiotic Stress Adaptation in Plants

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Publisher : Springer Science & Business Media
ISBN 13 : 904813112X
Total Pages : 546 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Abiotic Stress Adaptation in Plants by : Ashwani Pareek

Download or read book Abiotic Stress Adaptation in Plants written by Ashwani Pareek and published by Springer Science & Business Media. This book was released on 2009-12-12 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental insults such as extremes of temperature, extremes of water status as well as deteriorating soil conditions pose major threats to agriculture and food security. Employing contemporary tools and techniques from all branches of science, attempts are being made worldwide to understand how plants respond to abiotic stresses with the aim to help manipulate plant performance that will be better suited to withstand these stresses. This book on abiotic stress attempts to search for possible answers to several basic questions related to plant responses towards abiotic stresses. Presented in this book is a holistic view of the general principles of stress perception, signal transduction and regulation of gene expression. Further, chapters analyze not only model systems but extrapolate interpretations obtained from models to crops. Lastly, discusses how stress-tolerant crop or model plants have been or are being raised through plant breeding and genetic engineering approaches. Twenty three chapters, written by international authorities, integrate molecular details with overall plant structure and physiology, in a text-book style, including key references.

Advances in Salivary Diagnostics

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Publisher : Springer
ISBN 13 : 3662453991
Total Pages : 213 pages
Book Rating : 4.6/5 (624 download)

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Book Synopsis Advances in Salivary Diagnostics by : Charles F. Streckfus

Download or read book Advances in Salivary Diagnostics written by Charles F. Streckfus and published by Springer. This book was released on 2015-02-03 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the progress made in salivary diagnostics during the past two decades and identifies the likely direction of future endeavors. After an introductory section describing the histological and anatomical features of the salivary glands and salivary function, salivary collection devices and diagnostic platforms are reviewed. The field of “salivaomics” is then considered in detail, covering, for example, proteomics, the peptidome, DNA and RNA analysis, biomarkers, and methods for biomarker discovery. Salivary diagnostics for oral and systemic diseases are thoroughly discussed, and the role of salivary gland tissue engineering for future diagnostics is explored. The book closes by considering legal issues and barriers to salivary diagnostic development. Advances in Salivary Diagnostics will be an informative and stimulating reference for both practitioners and students.

Food Oral Processing

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Publisher : John Wiley & Sons
ISBN 13 : 1444330128
Total Pages : 411 pages
Book Rating : 4.4/5 (443 download)

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Book Synopsis Food Oral Processing by : Jianshe Chen

Download or read book Food Oral Processing written by Jianshe Chen and published by John Wiley & Sons. This book was released on 2012-04-16 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides an overview of the latest research findings on the physics, physiology, and psychology of food oral consumption, as well as the experimental techniques available for food oral studies. Coverage includes the main physical and physiological functionalities of the mouth; the location and functionalities of various oral receptors; the main sequences of eating and drinking, and the concomitant food disintegration and destabilisation. Chapters also explain oral processing and its relation to flavour release and texture perception, and there is an introduction to the principles of food rheology as they relate to eating. Food Oral Processing is directed at food scientists and technologists in industry and academia, especially those involved in sensory science and new product development. It will also be of interest to oral physiologists, oral biologists and dentists. The book will be a useful reference for undergraduate and postgraduate students of these disciplines.

Biowarfare in America

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Publisher : Illuminet Press
ISBN 13 : 9781881532217
Total Pages : 128 pages
Book Rating : 4.5/5 (322 download)

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Book Synopsis Biowarfare in America by : Jim Keith

Download or read book Biowarfare in America written by Jim Keith and published by Illuminet Press. This book was released on 1999 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The era of chemical and biological megadeath is upon us, and the potential of deadly biowarfare attacks from governments, militant independent groups, and even individuals is far greater than it has been at any time in the past. At this time, more than twenty-five countries are developing, or have stockpiles of chemical and biological weapons, in many cases in sufficient quantities to wipe out the entire population of the world. So far the danger of chemical and biological aggression has been little acknowledged, and, at least in America, little prepared for by federal and local government. Most terrorist threats and attacks are not widely reported in the mainstream media. Although information about the proliferation of man-made diseases is carefully suppressed by governments and the media they will be covered in the pages of this book. Not only is America unprepared and ignorant of what is happening, but the people in government and scientific professions who do know, who should be warning the American public about the dangers of chemical and biological terrorism, are instead doing their utmost to hide this information from us; information that is vital for our survival.The information that is contained in the pages of this book will not be measured or calculated to reassure people that everything is fine, when reassurance is the exact opposite of what is needed at this time. It may even give you nightmares when you realise the real circumstance that we are in. The information in the pages that follow will be the truth about the biowarfare threat to America.

Plant Responses to Abiotic Stress

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Publisher : Springer Science & Business Media
ISBN 13 : 9783540200376
Total Pages : 336 pages
Book Rating : 4.2/5 (3 download)

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Book Synopsis Plant Responses to Abiotic Stress by : Heribert Hirt

Download or read book Plant Responses to Abiotic Stress written by Heribert Hirt and published by Springer Science & Business Media. This book was released on 2003-10-08 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental stresses represent the most limiting factors for agricultural productivity. Apart from biotic stress caused by plant pathogens, there are a number of abiotic stresses such as extremes in temperature, drought, salinity, heavy metals and radiation which all have detrimental effects on plant growth and yield. However, certain plant species and ecotypes have developed various mechanisms to adapt to such stress conditions. Recent advances in the understanding of these abiotic stress responses provided the impetus for compiling up-to-date reviews discussing all relevant topics in abiotic stress signaling of plants in a single volume. Topical reviews were prepared by selected experts and contain an introduction, discussion of the state of the art and important future tasks of the particular fields.

Living in the Cold

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Publisher : John Libbey Eurotext
ISBN 13 : 9782855983950
Total Pages : 552 pages
Book Rating : 4.9/5 (839 download)

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Book Synopsis Living in the Cold by : André Malan

Download or read book Living in the Cold written by André Malan and published by John Libbey Eurotext. This book was released on 1989 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The New North American Studies

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Publisher : Routledge
ISBN 13 : 1134307470
Total Pages : 221 pages
Book Rating : 4.1/5 (343 download)

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Book Synopsis The New North American Studies by : Winfried Siemerling

Download or read book The New North American Studies written by Winfried Siemerling and published by Routledge. This book was released on 2004-08-02 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the English Book Award, Grand Prix du Livre 2006 de la Ville de Sherbrooke. In this original and groundbreaking study, Winfried Siemerling examines the complexities of recognition and identity, rejecting previous nationalized thinking to approach North American cultural transformations from transnational and interdisciplinary perspectives. Using material from the United States and Canada as case studies and drawing on a wide range of texts and theorists, he examines postcoloniality and cultural emergence from the sixties to the present against earlier backgrounds. Siemerling's argument for a retheorization of the field takes on the full history of multiculturalism debates, including radical readings of W.E.B. Du Bois and Charles Taylor and their relation to G.W.F. Hegel, and challenging many of the models of multiculturalism in use today. Tackling controversial subjects such as identity politics, The New North American Studies proposes a fresh outlook on the most central issues of North American cultural politics, from debates on canon formation to the role of racial and linguistic difference. Concluding with a look at the future of cultural difference, Winfried Siemerling's study is an innovative rethinking of the whole field of North American Studies.

Signal Transduction in Plants

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Publisher : Springer Science & Business Media
ISBN 13 : 1461513650
Total Pages : 328 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Signal Transduction in Plants by : S.K. Sopory

Download or read book Signal Transduction in Plants written by S.K. Sopory and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: An understanding of the mechanisms by which plants perceive environmental cues, both physical and chemical, and transduce the signals that influence specific expression of genes, is an area of intensive scientific research. With the completion of the genome sequence of Arabidopsis it is understood now that a larger number of genes encode for proteins involved in signalling cascades and transcription factors. In this volume, different chapters deal with plant receptors, second messengers like calcium ions, phosphoinositides, salicylic acid and nitrous oxide, calcium binding proteins and kinases. In addition to dealing with the response of plants to light, hormones, pathogens, heat, etc. on cellular activity, work currently going on in apoptosis, cell division, and plastid gene expression is also covered in this book.

Flavor

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Publisher : Woodhead Publishing
ISBN 13 : 0323914934
Total Pages : 506 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Flavor by : Elisabeth Guichard

Download or read book Flavor written by Elisabeth Guichard and published by Woodhead Publishing. This book was released on 2022-08-18 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flavor: From Food to Behaviors, Wellbeing and Health, Second Edition presents the different mechanisms of flavor perception. Broken into four parts, the first begins with coverage of flavor release in humans. Part two addresses flavor perception, from molecules to receptors and brain integration. Part three analyzes flavor perception, preferences and food intake. Finally, part four considers flavor perception and physiological status. Academics working in the areas of sensory science, food quality, nutrition and human sciences, as well as research and development professionals and nutritionists, will benefit from this important revised reference. - Addresses the link between flavor perception and human behaviors, specifically human physiology in relation to perception - Presents opportunities for the reformulation of healthy foods while maintaining the acceptability by consumers - Explains how flavor compounds may modulate food intake and behavior - Assesses the influence of age, physiological disorders, or social environments on the impact of food flavor

Asianfail

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Publisher : University of Illinois Press
ISBN 13 : 0252099389
Total Pages : 249 pages
Book Rating : 4.2/5 (52 download)

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Book Synopsis Asianfail by : Eleanor Ty

Download or read book Asianfail written by Eleanor Ty and published by University of Illinois Press. This book was released on 2017-03-21 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eleanor Ty's bold exploration of literature, plays, and film reveals how young Asian Americans and Asian Canadians have struggled with the ethos of self-sacrifice preached by their parents. This new generation's narratives focus on protagonists disenchanted with their daily lives. Many are depressed. Some are haunted by childhood memories of war, trauma, and refugee camps. Rejecting an obsession with professional status and money, they seek fulfillment by prioritizing relationships, personal growth, and cultural success. As Ty shows, these storytellers have done more than reject a narrowly defined road to happiness. They have rejected neoliberal capitalism itself. In so doing, they demand that the rest of us reconsider our outmoded ideas about the so-called model minority.

Flavor Release

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ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Flavor Release by : Deborah D. Roberts

Download or read book Flavor Release written by Deborah D. Roberts and published by . This book was released on 2000 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the physical chemistry of how volatile flavor compounds are released in the mouth and how they correlate with sensory perception. It is an excellent technical reference for flavor release researchers as it establishes the background of this active new area of flavor chemistry and outlines major recent developments.