Substrats phospho-calciques pour la régénération osseuse

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (994 download)

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Book Synopsis Substrats phospho-calciques pour la régénération osseuse by : Saad Mechiche Alami

Download or read book Substrats phospho-calciques pour la régénération osseuse written by Saad Mechiche Alami and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ingénierie du tissu osseux est un domaine qui représente un enjeu majeur dans le cadre de la médecine régénératrice. Trois composants sont généralement décrits dans le cadre de l'ingénierie tissulaire : un biomatériau pour pallier le volume de tissu défectueux, une source de cellules progénitrices qui seront responsables de la synthèse des composants tissulaires ainsi que des facteurs de croissance ou des signaux issus des propriétés physico-chimiques du biomatériau afin de guider la prolifération et la différenciation cellulaire. Le but de cette étude a été de synthétiser des substrats phospho-calciques à l'aide de la technique de pulvérisation simultanée d'espèces réactives et de caractériser les différentes propriétés physico-chimiques des substrats obtenus. Nous avons pu démontrer la possibilité d'inclure des molécules organiques (chitosane et acide hyaluronique) à la phase minérale avec cette technique. Nous avons aussi montré la possibilité de faire varier des propriétés telles la rugosité (entre 300 et 700 nm), l'élasticité (entre 2 à 6 GPa), la composition chimique (phosphate octacalcique ou phosphate dicalcique dihydraté) et la bioactivité (précipitation des phosphates de calcium à la surface des substrats) avec la technique de pulvérisation. Par ailleurs, des cellules souches issues de la gelée de Wharton de cordons ombilicaux humains ont été isolées, puis caractérisées sur le plan génique et protéique. Ces cellules étant candidates pour l'utilisation en ingénierie tissulaire osseuse, nous nous sommes intéressés à plusieurs types de marqueurs dont les marqueurs mésenchymateux et les cytokines immuno-modulatrices.La dernière partie de cette thèse a concerné l'association des cellules souches isolées à partir de la gelée de Wharton aux substrats phospho-calciques obtenus à l'aide de la technique de pulvérisation. Nous avons pu démontrer que les cellules adhéraient sur ces substrats et s'organisaient en structures nodulaires au sein desquelles a été observée une couche de cellules sécrétrices entourant des fibres de collagène, des formations cristallines faîtes de phosphates de calcium et des cellules dont la morphologie rappelait celle des ostéocytes. Des variations dans l'expression de marqueurs ostéoblastiques ont aussi été observées, et ce en l'absence de facteurs solubles ostéogéniques dans le milieu de culture. En conclusion, les substrats phospho-calciques obtenus avec la technique de pulvérisation sont capables d'induire la différenciation de cellules souches issues du cordon ombilical en ostéoblastes. Ce modèle se révèle être prometteur pour la mise en place de thérapies en vue de la régénération du tissu osseux.

Structure and Chemistry of the Apatites and Other Calcium Orthophosphates

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Publisher : Elsevier
ISBN 13 : 148329031X
Total Pages : 404 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Structure and Chemistry of the Apatites and Other Calcium Orthophosphates by : J.C. Elliott

Download or read book Structure and Chemistry of the Apatites and Other Calcium Orthophosphates written by J.C. Elliott and published by Elsevier. This book was released on 2013-10-22 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The apatites and related calcium phosphates have been of considerable interest to biologists, mineralogists, and inorganic and industrial chemists for many years. This book contains a detailed description of the structures and structural interrelationships of the calcium orthophosphates, including the apatites. Their preparation, crystal growth and dissolution, chemical reactions including thermal decomposition, IR, Raman and NMR spectra and various physical properties are discussed. Apatites other than those containing calcium and phosphorus are included. Synthetic, mineral and biological carbonate apatites are also considered. A wide, but critical coverage of the literature is given, which includes a substantial amount not written in English. Research from many disciplines is included which results in a comprehensive compilation of recent work.

Calcium Phosphates in Biological and Industrial Systems

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Publisher : Springer Science & Business Media
ISBN 13 : 1461555175
Total Pages : 509 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Calcium Phosphates in Biological and Industrial Systems by : Zahid Amjad

Download or read book Calcium Phosphates in Biological and Industrial Systems written by Zahid Amjad and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calcium Phosphates in Biological and Industrial Systems provides a comprehensive discussion on calcium phosphates in the diverse areas of their applications. The authors are all respected specialists in their particular fields, possessing wide knowledge and experience and able to analyze recent results and relate them to their respective areas of expertise. New information, as well as a review of current concepts, highlights the individual contributions. Due to the broad scope of the subject covered and the large number of contributions, this book is divided into three parts. Whilst each section contains a basic theme, there is a considerable overlapping of ideas and approaches. This reflects the excitement and interdisciplinary nature of investigations by researchers interested in dissimilar aspects of calcium phosphates. Considering the general interest in calcium phosphates, Calcium Phosphates in Biological and Industrial Systems is directed at an audience of researchers in the fields of biology, chemistry, dentistry, geology, chemical engineering, environmental engineering, and medicine. It will also be useful to technology-focused researchers in industry whose investigations might be related directly or indirectly to calcium phosphates.

Phytochemicals in Nutrition and Health

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Publisher : CRC Press
ISBN 13 : 1420031694
Total Pages : 221 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Phytochemicals in Nutrition and Health by : Mark S. Meskin

Download or read book Phytochemicals in Nutrition and Health written by Mark S. Meskin and published by CRC Press. This book was released on 2002-03-19 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Spark Plasma Sintering: Current Status, New Developments and Challenges

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Publisher : Elsevier
ISBN 13 : 0128177446
Total Pages : 334 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Spark Plasma Sintering: Current Status, New Developments and Challenges by : Giacomo Cao

Download or read book Spark Plasma Sintering: Current Status, New Developments and Challenges written by Giacomo Cao and published by Elsevier. This book was released on 2019-06-17 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spark Plasma Sintering: Current Status, New Developments and Challenges: A Review of the Current Trends in SPS looks at the progress made in the field of SPS. It includes a review of the scientific mechanisms, materials synthesis and industry applications for this processing technique. Chapters are written by leading experts in the field, encompassing topics surrounding the densification mechanism and microstructure evolution, the classification of high-performance materials, a review of numerical simulation, discussions of new technology advances, such as HP-SPS, flash sintering and related challenges. This book will be useful for researchers, engineers and students within the materials science and engineering fields. Provides significant information on the most relevant research topics currently being addressed by the SPS community Highlights the application of SPS techniques Reviews critical issues that still need to be overcome when utilizing SPS technology

Octacalcium Phosphate

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Publisher :
ISBN 13 : 9783318007046
Total Pages : 0 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Octacalcium Phosphate by : L. C. Chow

Download or read book Octacalcium Phosphate written by L. C. Chow and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry, structure and biological importance of octacalcium phosphate (OCP) are thoroughly discussed in this volume, which covers a wide scope of topics relevant to the field of calcium phosphates in general. The first chapter reviews the structures of OCP and other important calcium phosphates. It is followed by a description of the mimicry of OCP growth in vivo using in vitro model systems and an extensive review of OCP in biological systems. The remarkable ability of OCP to incorporate biologically relevant organic carboxylates into its structure is also discussed, along with the solubility and surface properties of calcium phosphate salts, and amorphous calcium phosphate and its relationship to OCP. The last chapter centers on the emerging technology of calcium phosphate cements as bone defect repair materials. The book provides in-depth, up-to-date information to all scientists studying calcium phosphate chemistry, biomineralization, pathological calcification, dental caries, biomaterials, and recovery of environmental phosphorus.

Matricellular Receptors as Potential Targets in Anti-Cancer Therapeutic Strategies

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Publisher : Frontiers Media SA
ISBN 13 : 2889450244
Total Pages : 131 pages
Book Rating : 4.8/5 (894 download)

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Book Synopsis Matricellular Receptors as Potential Targets in Anti-Cancer Therapeutic Strategies by : Hervé Emonard

Download or read book Matricellular Receptors as Potential Targets in Anti-Cancer Therapeutic Strategies written by Hervé Emonard and published by Frontiers Media SA. This book was released on 2016-11-22 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invasive character of a primary cancer is greatly dependent on numerous interactions between tumor cells and their extracellular surroundings. Matricellular receptors are defined as (cell-surface) receptors that bind extracellular matrix (ECM) structural proteins and soluble factors dynamically acting on ECM homeostasis. Matricellular receptors mediate numerous signalings from the extracellular environment to cell nucleus and drive main biological functions that are cell growth, survival and migration. Numerous data from the last decade evidence that matricellular receptors are biosensors that allow to a tumor cell answering to microenvironmental variations, and in this sense they are important contributors to tumor cell malignancy. Matricellular receptors represent thus valuable targets for the development of original anti-cancer strategies. Original reports, bibliographic reviews or hypotheses are welcome to improve the basic knowledge of matricellular receptor properties, their spatio-temporal regulation, the dynamic formation of complex receptors and the impact of such interactions on the invasive properties of tumor cells. Biological, biophysical and pharmacological, as well as in silico contributions will be appreciated.

Human Hybridomas

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Author :
Publisher : Marcel Dekker
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Human Hybridomas by : Anthony J. Strelkauskas

Download or read book Human Hybridomas written by Anthony J. Strelkauskas and published by Marcel Dekker. This book was released on 1987 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Confronting Poverty in Iraq

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Publisher : World Bank Publications
ISBN 13 : 0821385631
Total Pages : 114 pages
Book Rating : 4.8/5 (213 download)

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Book Synopsis Confronting Poverty in Iraq by : World Bank

Download or read book Confronting Poverty in Iraq written by World Bank and published by World Bank Publications. This book was released on 2011-01-10 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides the most comprehensive and rigorous analysis of Iraqi income and expenditure in several decades. The report makes extensive use of the Iraq Household Socio-Economic Survey, the first nationwide income and expenditure survey since 1988. IHSES data is complemented income and expenditure data from a wide range of other measures of living standards, allowing us to analyze living standards in a holistic way. The analysis presented here was performed with two main goals first, to inform the Government s Poverty Reduction Strategy; and second, to serve as a baseline for future assessments of changes in living standards and the identification of critical issues for deeper examination. Iraqi living standards have two unusual characteristics. First, they have fallen over the past generation. Second, they feature surprisingly little inequality. These characteristics are both rooted in Iraq s recent history of authoritarian government, war, military occupation, insurgency, and civil strife leading to infrastructure destruction and population displacement. There have been few opportunities for individuals to prosper from professional or entrepreneurial activities. Decades of neglected investment have resulted in deterioration of social services and economic infrastructure. Consequently, individuals have lacked capabilities to prosper and an investment climate conducive to prosperity. School enrollment and life expectancy have declined. Extremely low returns to education reflect the combination of poor educational quality and lack of employment opportunities. In terms of economic infrastructure, access to reliable electricity and water, and even access to paved roads are low, are further reflections of decades of neglect. While the upper end of the distribution has been pulled down by a lack of opportunities, the lower end has been supported by direct government provision of food. The Public Distribution System (PDS) provides 85 percent of food needs. While PDS has been useful as a safety net for the poor and the vulnerable, the system is expensive, inefficient, and fiscally risky. Indeed, PDS food rations account for a far greater share of public spending than does education or health. Going forward, Iraq faces two main challenges. First, although Iraq does not have to develop from scratch, it faces a formidable challenge in re-development. Second, a shift by the Government is required from direct provision of basic subsistence toward investment in human capacities. The Government can provide an enabling environment through investments in economic infrastructure and services to business and citizens, thus allowing the population to make productive use of education and their own labor. Both challenges are now being taken up by the Poverty Reduction Strategy, which articulates a detailed set of required actions and outlines priorities for government spending.

Conceptual Modeling for Traditional and Spatio-Temporal Applications

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Publisher : Springer Science & Business Media
ISBN 13 : 354030326X
Total Pages : 475 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Conceptual Modeling for Traditional and Spatio-Temporal Applications by : Christine Parent

Download or read book Conceptual Modeling for Traditional and Spatio-Temporal Applications written by Christine Parent and published by Springer Science & Business Media. This book was released on 2006-09-02 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: From environmental management to land planning and geo-marketing, the number of application domains that may greatly benefit from using data enriched with spatio-temporal features is expanding very rapidly. This book shows that a conceptual design approach for spatio-temporal databases is both feasible and easy to apprehend. While providing a firm basis through extensive discussion of traditional data modeling concepts, the major focus of the book is on modeling spatial and temporal information.

Microbial Biotechnology: Basic Research and Applications

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Publisher : Springer Nature
ISBN 13 : 9811528179
Total Pages : 377 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Microbial Biotechnology: Basic Research and Applications by : Joginder Singh

Download or read book Microbial Biotechnology: Basic Research and Applications written by Joginder Singh and published by Springer Nature. This book was released on 2020-07-07 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: M​icrobial biotechnology is an important area that promotes advanced research into using microbes for value-added products, human nutrition, and the overall wellbeing of society. This book presents the latest information on the use of microbes for sustainable development, and highlights state-of-the-art biotechnological techniques used to harness microbial biotechnological traits on a commercial scale. Gathering contributions from authoritative researchers in the field, it addresses recent advances in microbial biotechnological approaches that offer sustainable options for future generations. Exploring a broad range of microbial products and their uses, the book specifically places emphasis on the application of microorganisms in healthcare, the environment and industry. It also discusses various compound classes derived from microbial metabolites. Pursuing a holistic approach to recent advances in the utilization of various microbes as biotechnological tools, the book also covers traditional uses, and explores emerging strategies to harness their full potential. Accordingly, it offers a valuable resource for researchers and graduate students alike.

Biomarkers of the Tumor Microenvironment

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Publisher :
ISBN 13 : 9783030989514
Total Pages : 0 pages
Book Rating : 4.9/5 (895 download)

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Book Synopsis Biomarkers of the Tumor Microenvironment by : Lars A. Akslen

Download or read book Biomarkers of the Tumor Microenvironment written by Lars A. Akslen and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews different aspects of the cancer microenvironment, and its regulation and importance for tumor progression. Methodological advancements and practical applications, in terms of how biomarkers are studied and increasingly included in clinical trials and therapy protocols, are described and discussed. Biomarkers of the Tumor Microenvironment is an educational resource for students and members of the cancer research community as a whole, especially for those using morphology analysis techniques and models focusing on the cross-talk between different cell types in tumors. The textbook provides a comprehensive overview of the microenvironment in various contexts from the perspectives of experienced and accomplished cancer researchers and clinicians.

Biomarkers of the Tumor Microenvironment

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Author :
Publisher : Springer
ISBN 13 : 331939147X
Total Pages : 537 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis Biomarkers of the Tumor Microenvironment by : Lars A. Akslen

Download or read book Biomarkers of the Tumor Microenvironment written by Lars A. Akslen and published by Springer. This book was released on 2017-08-02 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews different aspects of the cancer microenvironment, and its regulation and importance for tumor progression. Practical applications, in terms of how biomarkers are increasingly included in therapy protocols, will also be discussed. Biomarkers of the Tumor Microenvironment: Basic Studies and Practical Applications is aimed at research pathologists in the cancer field, and also cancer researchers from other backgrounds, especially those using morphology techniques and models focusing on cross-talk between different cell types in tumors.