Biological Mineralization and Demineralization

Biological Mineralization and Demineralization
Author: G.H. Nancollas
Publisher: Springer Science & Business Media
Total Pages: 411
Release: 2012-12-06
Genre: Science
ISBN: 3642685749

normal and pathological mineralization in vertebrates but also with the interesting problems involved in the formation of in tracellular deposits of calcium oxalate in plants. Here cal cium carbonate and silica may also be involved in the mineral ization processes. Calcium carbonate is an important component in the formation of mollusc and avian shells. The observation that both calcite and aragonite may be formed in biogenic cal cium carbonate raises important questions as to what factors control the formation of the final mineral phase. There is little doubt that thermodynamically less stable phases may be kinetically stabilized for long periods of time by other mole cules present in vivo. In normal mineralization, calcium salts may initially be deposited both within the cells and extracel lularly. In the latter case, the role of matrix vesicles and the ways in which the matrix components might control mineral ization were especially emphasized. There is clearly a need for more structural and functional information involving cells, matrix components, and their associated crystals. The develop ment of further techniques involving mutants, chromofluors, and fixatives for preservation of tissue and the ions present in vivo was recommended. In dealing with abnormal and pathological mineralization, the Workshop concentrated on urolithiasis, gout and pseudo-gout, and the formation of dental caries. Discussions based on the influence of media of low pH on mineral surfaces highlighted some of the factors of importance in controlling crystal dis solution.

Biological Mineralization and Demineralization

Biological Mineralization and Demineralization
Author: G.H. Nancollas
Publisher: Springer
Total Pages: 0
Release: 2011-11-19
Genre: Science
ISBN: 9783642685767

normal and pathological mineralization in vertebrates but also with the interesting problems involved in the formation of in tracellular deposits of calcium oxalate in plants. Here cal cium carbonate and silica may also be involved in the mineral ization processes. Calcium carbonate is an important component in the formation of mollusc and avian shells. The observation that both calcite and aragonite may be formed in biogenic cal cium carbonate raises important questions as to what factors control the formation of the final mineral phase. There is little doubt that thermodynamically less stable phases may be kinetically stabilized for long periods of time by other mole cules present in vivo. In normal mineralization, calcium salts may initially be deposited both within the cells and extracel lularly. In the latter case, the role of matrix vesicles and the ways in which the matrix components might control mineral ization were especially emphasized. There is clearly a need for more structural and functional information involving cells, matrix components, and their associated crystals. The develop ment of further techniques involving mutants, chromofluors, and fixatives for preservation of tissue and the ions present in vivo was recommended. In dealing with abnormal and pathological mineralization, the Workshop concentrated on urolithiasis, gout and pseudo-gout, and the formation of dental caries. Discussions based on the influence of media of low pH on mineral surfaces highlighted some of the factors of importance in controlling crystal dis solution.

Biological Mineralization and Demineralization

Biological Mineralization and Demineralization
Author: G.H. Nancollas
Publisher: Springer
Total Pages: 0
Release: 1982-05-01
Genre: Science
ISBN: 9783540115212

normal and pathological mineralization in vertebrates but also with the interesting problems involved in the formation of in tracellular deposits of calcium oxalate in plants. Here cal cium carbonate and silica may also be involved in the mineral ization processes. Calcium carbonate is an important component in the formation of mollusc and avian shells. The observation that both calcite and aragonite may be formed in biogenic cal cium carbonate raises important questions as to what factors control the formation of the final mineral phase. There is little doubt that thermodynamically less stable phases may be kinetically stabilized for long periods of time by other mole cules present in vivo. In normal mineralization, calcium salts may initially be deposited both within the cells and extracel lularly. In the latter case, the role of matrix vesicles and the ways in which the matrix components might control mineral ization were especially emphasized. There is clearly a need for more structural and functional information involving cells, matrix components, and their associated crystals. The develop ment of further techniques involving mutants, chromofluors, and fixatives for preservation of tissue and the ions present in vivo was recommended. In dealing with abnormal and pathological mineralization, the Workshop concentrated on urolithiasis, gout and pseudo-gout, and the formation of dental caries. Discussions based on the influence of media of low pH on mineral surfaces highlighted some of the factors of importance in controlling crystal dis solution.

Biological Mineralization and Demineralization

Biological Mineralization and Demineralization
Author: G.H. Nancollas
Publisher: Springer
Total Pages: 415
Release: 1982-05-01
Genre: Science
ISBN: 9783540115212

normal and pathological mineralization in vertebrates but also with the interesting problems involved in the formation of in tracellular deposits of calcium oxalate in plants. Here cal cium carbonate and silica may also be involved in the mineral ization processes. Calcium carbonate is an important component in the formation of mollusc and avian shells. The observation that both calcite and aragonite may be formed in biogenic cal cium carbonate raises important questions as to what factors control the formation of the final mineral phase. There is little doubt that thermodynamically less stable phases may be kinetically stabilized for long periods of time by other mole cules present in vivo. In normal mineralization, calcium salts may initially be deposited both within the cells and extracel lularly. In the latter case, the role of matrix vesicles and the ways in which the matrix components might control mineral ization were especially emphasized. There is clearly a need for more structural and functional information involving cells, matrix components, and their associated crystals. The develop ment of further techniques involving mutants, chromofluors, and fixatives for preservation of tissue and the ions present in vivo was recommended. In dealing with abnormal and pathological mineralization, the Workshop concentrated on urolithiasis, gout and pseudo-gout, and the formation of dental caries. Discussions based on the influence of media of low pH on mineral surfaces highlighted some of the factors of importance in controlling crystal dis solution.

Biological Calcification: Cellular and Molecular Aspects

Biological Calcification: Cellular and Molecular Aspects
Author: Harald Schraer
Publisher: Springer Science & Business Media
Total Pages: 464
Release: 2012-12-06
Genre: Science
ISBN: 1468484850

The deposition of calcium-containing salts is a widespread phenomenon in both the plant and animal kingdoms. Its occurrence suggests a generalized biological adaptation to environments rich in calcium. Indeed, the Archaean ocean was rich in calcium carbonate, and traces of ancient organisms have been found in lime stones estimated to be about 2. 7 billion years old. The fundamental nature of biological calcification makes it a subject of interest not only to the student of calcium metabolism and skeletal physiology, but also to biologists in general. As in many areas of biological science recent progress in this field has been rapid, and no attempt was made here to cover all the biological systems in which calcifica tion is an important facet of the organisms' method of operation. Calcification is approached in this volume at the levels of the cellular sites and molecular mechan isms that are involved in this process. The ultrastructural and chemical features of the cells and their products which are associated with calcification are empha sized in several chapters. The editor, in inviting contributions from authors, in tended that collectively the chapters should convey a sense of the ubiquitous and essential nature of the role of calcification in several phyla of the plant and animal kingdoms. The researchers were biochemists, physical chemists, cell biologists and physiologists; some represented medicine and dentistry; all were interested in calcification.

Bioceramics and their Clinical Applications

Bioceramics and their Clinical Applications
Author: Tadashi Kokubo
Publisher: Elsevier
Total Pages: 785
Release: 2008-03-25
Genre: Science
ISBN: 1845694228

Bioceramics have been used very successfully within the human body for many years. They are commonly used in orthopaedic surgery and dentistry but they are potentially suitable for a wide range of important applications within the medical device industry. This important book reviews the range of bioceramics, their properties and range of clinical uses.Chapters in the first section of the book discusses issues of significance to a range of bioceramics such as their structure, mechanical properties and biological interactions. The second part reviews the fabrication, microstructure and properties of specific bioceramics and glasses, concentrating on the most promising materials. These include alumina and zirconia ceramics, bioactive glasses and bioactive glass-ceramics, calcium sulphate, tricalcium phosphate-based ceramics, hydroxyapatite, tricalcium phosphate/hydroxyapatite biphasic ceramics, si-substrated hydroxyapatite, calcium phosphate cement, calcium phosphate coating, titania-based materials, ceramic-polymer composites, dental ceramics and dental glass-ceramics. The final group of chapters reviews the clinical applications of bioceramics in joint replacement, bone grafts, tissue engineering and dentistry.Bioceramics and their clinical applications is written by leading academics from around the world and it provides an authoritative review of this highly active area of research. This book is a useful resource for biomaterials scientists and engineers, as well as for clinicians and the academic community. - Provides an authoritative review of this highly active area of research - Discusses issues of significance of a range of bioceramics such as their structure, mechanical properties and biological interactions - Reviews the clinical applications of bioceramics in joint replacement, bone grafts, tissue engineering and dentistry

Calcium Orthophosphates

Calcium Orthophosphates
Author: Sergey V. Dorozhkin
Publisher: CRC Press
Total Pages: 863
Release: 2012-06-04
Genre: Science
ISBN: 9814364177

Due to a great chemical similarity with the biological calcified tissues, many calcium orthophosphates possess remarkable biocompatibility and bioactivity. Materials scientists use this property extensively to construct artificial bone grafts that are either entirely made of or only surface-coated with the biologically relevant calcium orthophospha

Biomineralization

Biomineralization
Author: Astrid Sigel
Publisher: John Wiley & Sons
Total Pages: 700
Release: 2008-04-30
Genre: Science
ISBN: 9780470986318

Biomineralization is a hot topic in the area of materials, and this volume in the Metals Ions in Life Sciences series takes a systematic approach, dealing with all aspects from the fundamentals to applications. Key biological features of biomineralization, such as gene directed growth and the role of enzymes are covered, as are new areas, including copper/zinc in the jaws of invertebrates or magnetic biomaterials that help birds with navigation