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  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Calcium in the body -- Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (557 pages)
    Edition: 1st ed.
    ISBN: 9780323146159
    Language: English
    Note: Front Cover -- Cellular Mechanisms for Calcium Transfer and Homeostasis -- Copyright Page -- Table of Contents -- List of Contributors -- Preface -- Credits -- Ackowledgments -- Frankli Chambers McLEAN and the State Calcium in Body Fluids -- Cellular Mechanisms for Calcium Transfer and Homeostasis -- PART I: THE STATE OF CALCIUM IN BODY FLUIDS -- Chapter 1. The Structure, Properties, and Formation of Calcium Phosphates in Hard Tissue -- Introduction -- Hydroxyapatite Structure -- Carbonate Apatites -- Bone Apatite -- Amorphous Calcium Phosphate in Bone Mineral -- Tissue Mineralization -- Conclusions -- References -- Discussion -- Chapter 2. Differentiation Processes in Calcified Tissues -- Introduction -- Development as a General Process -- Development in Bone and Dental Tissues -- Conclusion -- References -- Discussion -- Chapter 3. The Binding of Calcium with Nucleic Acids and Phospholipids -- General Procedure -- Nucleic Acids -- Phospholipids -- Conclusions and Summary -- References -- Discussion -- Chapter 4. Chemical Structure of Bone Sialoprotein and a Preliminary Study of Its Calcium-Binding Properties -- Isolation of Bone Sialoprotein -- Composition of BSP -- Physical Properties of BSP -- Binding of Radioelements to BSP -- Calcium Binding and Inhibition of Calcium Phosphate Precipitation -- Conclusion -- References -- Discussion -- PART II: ROLE OF CALCIUM IN MEMBRANE STRUCTURE AND INTEGRITY -- Chapter 5. The Biionic Action Potential and IndispensabiUty of Divalent Cations in the External Medium for Nerve Excitation -- Introduction -- Intracellular Perfusion of the Squid Giant Axon -- Effects of Calcium Ions inside the Axon -- The Biionic Action Potential -- Ionic Mechanism of Nerve Excitation -- Change in the Hydrophobicity of the Membrane Macromolecules during Nerve Excitation -- Conclusions -- References -- Discussion. , Chapter 6. The Calcium Homeostatic System as a Physiological Regulator of Cell Proliferation in Mammalian Tissues -- Introduction -- Basic Phenomena -- Mechanism -- Physiological Significance -- Summary -- References -- Discussion -- PART III: CALCIUM TRANSFER ACROSS CELL AND SUBCELLULAR MEMBRANES -- Chapter 7. A Calcium Pump in Red Cell Membranes -- Text -- References -- Discussion -- Chapter 8. Calcium Transport in Kidney Cells and Its Regulation -- Calcium Pools -- Calcium Fluxes -- A Model for Cellular Calcium Metabolism -- References -- Discussion -- Chapter 9. Recent Observations on the Mechanism of Ca2+ Transport by Fragmented Sarcoplasmic Reticulum Membranes -- Introduction -- Role of Phospholipids in ATPase Activity and Calcium Transport -- Protein Composition of Sarcoplasmic Reticulum Membranes -- Isolation of a Phosphopeptide from Microsomal Membranes Labeled with AT32P or Acetyl-32P -- References -- Discussion -- PART IV: CELL MECHANISMS IN MINERALIZED TISSUES -- Chapter 10. The Concept of a Bone Membrane: Some Implications -- Text -- References -- Discussion -- Chapter 11. Bone Cells, Calcification, and Calcium Homeostasis -- Text -- References -- Discussion -- Chapter 12. The Role of Mitochondria in Intracellular Calcium Regulation -- Experimental Protocol -- Method -- Results -- Summary -- References -- Discussion -- Chapter 13. Bone Formation and Resorption by Osteocytes -- Introduction -- Methods -- Results -- Discussion -- Conclusions -- References -- Discussion -- PART V: CALCIUM TRANSFER ACROSS EPITHELIAL TISSUES -- Chapter 14. Intestinal Calcium Absorption, Vitamin D, Adaptation, and the Calcium-Binding Protein -- A Dual Effect of Vitamin D -- Adaptation -- Synthesis of CaBP in Organ Culture -- Concluding Remarks -- Summary -- References -- Discussion. , Chapter 15. Vagaries in the Use of Isolated Intestinal Mucosal Cell Preparations with Particular Emphasis on Calcium Uptake -- Introduction† -- Materials and Methods -- Results -- Summary and Conclusions -- References -- Discussion -- Chapter 16. Active Transport of Calcium across Placenta and Mammary Gland Measured in Vivo -- Introduction -- Placental Calcium Transport -- Mammary Calcium Transport -- References -- Discussion -- Chapter 17. Calcium Transfer across the Avian Shell Gland -- Introduction -- Anatomical Considerations -- Autoradiographic Localization of Calcium -- Calcium Transport Studies -- Mitochondria and Metal Ion Translocation -- References -- Discussion -- Chapter 18. Active Transcellular Transport of Calcium by Embryonic Chick Chorioallantoic Membrane -- Electron Probe Investigations -- Oxygen Consumption and Active Calcium Transport -- Sulfhydryl Groups and Calcium Transport -- Concluding Remarks -- References -- Discussion -- PART VI: SITES AND MODES OF ACTION OF HUMORAL FACTORS -- Chapter 19. Chemistry of Parathyroid Hormone -- Isolation -- Sequence Analysis -- Synthesis: Properties of the Synthetic Peptide -- Conclusion -- References -- Discussion -- Chapter 20. Physiological Importance of Thyrocalcitonin -- Text -- References -- Discussion -- Chapter 21. Metabolism and Mechanism of Action of 25-Hydroxycholecalciferol -- Physiological Actions of Vitamin D -- Metabolism of Vitamin D -- Metabolism of 25-HCC -- Mechanism of Action of Vitamin D -- References -- Discussion -- Chapter 22. Induction of Bone Resorption in Tissue Culture: Interaction of Humoral Agents and Ions -- Induction Model -- Role of RNA Synthesis -- Role of Cyclic Adenosine 3',5'-Monophosphate (cAMP) -- Synergism between PTH and 25-HCC -- Effect of Thyrocalcitonin -- Effect of Calcium on Induction -- Conclusion -- References -- Discussion. , PART VII: ABSTRACTS OF SUBMITTED PAPERS -- Chapter 23. Calcification -- Time Study of in Vivo Incorporation of 32P-Orthophosphate into Phospholipids of Chicken Epiphyseal Tissues -- Metabolic Activity at the Cement Line of Bone -- Calcification of the Cartilage Formed on Avian Bones -- Evidences of a Direct Effect of Vitamin D3 or 25-Hydroxycholecalciferol upon Human Adult Bone Mineralization -- Role of Protein-Polysaccharide Aggregates as a Biological Inhibitor of Mineral Growth -- Calcification of Cartilage by Means of Mineralized Spherules -- Decalcified Bone Implants under Hormonal Influence -- Mechanism of Calcification -- Biological Role of Heterologous Antibodies against Cartilage Protein Polysaccharide Complex Light Fraction (PP-L) -- Isolation of Membrane-Bounded Extracellular Particles Associated with Calcification in Cartilage Matrix -- Electron Microscope Measurements of Alkaline Earth Transport -- Calcium Transport and Calcification Studies by Microperfusion -- Chapter 24. Calcitonin: Calcium Ion Activity and Pharmacological Action: Tooth Formation -- 47Ca Turnover of a Readily Exchangeable Calcium Pool in Pregnant and Lactating Cows -- Metabolic Clearance Rate of Radioiodinated Human Calcitonin in Man -- Extraosseous Actions of Calcitonin -- Crystal-Matrix Relationship in Amelogenesis -- Different Isozymes of Acid Phosphatase in Bone and Developing Teeth -- Provisional Calcification of Cartilage in Tissue Culture -- Bone Cell Response to Serum Calcium-Altering Drugs -- Calcium Ion Activity in Plasma: Effects of Metabolic and Respiratory -- A Calcium Concentration Dependent Hypocalcemic Effect of Calcitonin -- Natriuric Effect of Calcitonin in Man -- Remissions in Paget's Disease Produced by Human Synthetic Calcitonin (Calcitonin M). , Relationship between Alkaline Phosphatase, Inorganic Pyrophosphatase, and L-Ascorbic Acid in Calcifying Hamster Molars -- Chapter 25. Diphosphonates -- Bone Resorption -- Osteoporosis -- Mechanical Effects on Cell Mechanisms in Bone -- Canalicular and Interstitial Changes in Osteocytic Osteolysis -- Effect of Calcium Deficiency on Healing of Experimental Fractures in the Avian Tarsus as Determined by the Fracture Repair Ratio -- Effect of Phosphonates on Bone Tissue: Studies in Man and Animals -- Sites and Modes of an Estrogen-Gestagen Combination on Calcium and Phosphate Metabolism in Senile Osteoporosis -- Resorption of Bone Collagen by Multinucleated Giant Cells -- Effect of Disodium Ethane-1-hydroxy-1,1-diphosphonate on Bone Formation in Animals -- Effectiveness of Diphosphonates in Preventing Osteoporosis of Disuse in the Rat -- Osteoporosis and Parathyroid Glands: The Effect of Prolonged Calcium Deficiency on Thyroparathyroidectomized Adult Rats -- Role of a Lipoprotein in the Intracellular Hydroxyapatite Formation in Bacterionema Matruchotii -- Hormonal Effects on Calcium Transport in Liver -- Chapter 26. Intestinal Absorption of Calcium and Bone Metabolism -- Osteocyte as a Bone Pump -- 25-Hydroxycholecalciferol (25-HCC): Effects in Deficiency Rickets and Vitamin D-Resistant Rickets -- Induction of Calcium-Binding Protein (CaBP) Biosynthesis by Vitamin D3 and 25-Hydroxycholecalciferol (25-HCC) -- Effect of Cortisol on Calcium-Binding Protein in Rat Duodenum -- A Study of Nephron Permeability to Calcium by Microinjection Technique -- A Study of Calcium-Binding Proteins in Human Animal Small Bowel Mucosa -- A Method for Studying the Configuration, Dimensions, and Distribution Remodeling Centers on the Endosteal, Cortical, and Trabecular Surfaces -- Transport of Iodoantipyrine-125I (I-Ap) In Cortical Bone. , Ca2+ Sensitive ATPase In Duodenal Mucosa: Localization in Basal Membranes.
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  • 2
    Book
    Book
    New Haven, Conn. : Yale Univ. Press
    Type of Medium: Book
    Pages: S. 252 - 467 , Ill., graph. Darst., Kt.
    Series Statement: Transactions of the Connecticut Academy of Arts and Sciences 22,[3]
    Language: English
    Note: Literaturverz. S. [463] - 467
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 80 (1958), S. 2619-2623 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 78 (1956), S. 5190-5193 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 379-380 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Chips of metaphyseal bone, free of cartilage, were incubated in vitro in Krebs-Ringer bicarbonate buffered media at pTL 7-4 and 37-5 C. under an atmosphere of 5 per cent carbon dioxide in either oxygen, air, or nitrogen. Glucose, 11-1 mM, was present as substrate. In one set of experiments it was ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 1325-1326 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two tissues immediately suggested themselves for examination in seeking answers to these questions: liver, because of the abundant lysosomes which it contains5; and polymorphonuclear leucocytes the granules of which have been shown to contain many acidhydrolases and the efficiency of which as ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 9 (1972), S. 67-79 
    ISSN: 1432-0827
    Keywords: Bone ; Calcium ; Calcification ; Mitochondria ; Cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé Quatre vingt quinze pour cent du total du calcium et phosphate d'homogénats cellulaires, isolés mécaniquement de l'os, sédimentent avec des particules sub-cellulaires par centrifugation à 15000×G. Une méthode, destinée à isoler et à purifier partiellement cette fraction, riche en calcium, est mise au point par digestion enzymatique avec de la désoxyribonucléase et ultracentrifugation dans 70% de saccharose. Le fragment obtenu contient 10% de produit minéral, sous forme de complexe calcium-phosphate, et des protéines et lipides. Des quantités importantes de phospholipides et RNA sont notées, ainsi que des quantités faibles d'hexosamine et d'acide sialique. Les essais enzymatiques et la microscopie électronique indiquent que la fraction contient plusieurs types différents de particules cytophoniques, mais leur contenu en calcium n'a pu être déterminé.
    Abstract: Zusammenfassung Es wurde festgestellt, daß 95% des gesamten Calcium-und Phosphatgehaltes in Zellhomogenaten, welche mechanisch aus Knochen isoliert wurden, mit subzellulären Teilchen in einem Zentrifugenfeld von 15000×G sedimentieren. Zur Isolation und teilweisen Reinigung dieser calciumreichen Fraktion wurde eine Methode entwickelt, die auf enzymatischer Verdauung mit Desoxyribonuclease und Ultrazentrifugation mittels 70% Sucrose basiert. Der entstandene Niederschlag enthielt 10% Mineral, der in Form eines Calciumphosphat-Komplexes vorlag und einen hohen Gehalt an Protein und Lipid aufwies. Es fanden sich ferner signifikante Mengen von Phospholipid und RNS, dagegen nur kleine Mengen von Hexosamin und Sialsäure. Enzymbestimmungen und Elektronenmikroskopie zeigten, daß die gefundene Fraktion mehrere, sich voneinander unterscheidende Typen von Cytoplasmapartikeln enthielt; ihr Calciumgehalt konnte jedoch anhand der verfügbaren Resultate nicht bestimmt werden.
    Notes: Abstract Ninety-five percent of the total calcium and phosphate in homogenates of cells isolated mechanically from bone was found to sediment with subcellular particles in a centrifugal field of 15000×G. A method was devised for the isolation and partial purification of this calcium-rich fraction by enzymatic digestion with deoxyribonuclease and ultracentrifugation through 70% sucrose. The resultant pellet was 10% mineral, present as some form of calcium-phosphate complex, and was rich in protein and lipid. Significant amounts of phospholipid and RNA were present also, but only small amounts of hexosamine and sialic acid. Enzyme assays and electron microscopy indicated that the fraction contained several different types of cytoplasmic particles but those which contained calcium could not be determined from available data.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 9 (1972), S. 80-94 
    ISSN: 1432-0827
    Keywords: Bone ; Calcium ; Metabolism ; Cells ; Transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé Le contenu moyen en calcium d'une population mixte de cellules osseuses viables, fraichement séparées de la matrice osseuse calcifiée, est de 194,5±7,3 mmoles/kg de poids sec chez le porc et 176,6±8,7 mmoles/kg chez le rat. Le calcium semble intracellulaire. La majorité (90% ou plus) sédimente avec des particules intracellulaires au cours de la centrifugation et le reste se situe dans le liquide cellulaire. Des études cinétiques à l'aide de45Ca indiquent un passage rapide du calcium, en rapport avec la température, à la fois dans les réserves solubles et les particules de calcium d'homogénats de cellules osseuses. Ils indiquent aussi un échange direct entre la phase liquide et les particules, d'une part, et le milieu extracellulaire, d'autre part. Ces échanges se font à une vitesse différente et, probablement, selon des mécanismes différents, la portion comportant les particules étant la plus rapide. Les résultats indiquent que ces dernières pourraient correspondre aux petites granules denses identifiées récemment en microscopie électronique et l'acquisition, le stockage et la libération de calcium de ces compartiments pourraient être importants pour le métabolisme squelettique du calcium.
    Abstract: Zusammenfassung Der mittlere Calciumgehalt einer gemischten Population von lebensfähigen, frisch aus der verkalkten Matrix gewonnenen Knochenzellen betrug beim schwein 194,5±7,3 mmol/kg Naßgewicht und bei der Ratte 176,6±8,7 mmol/kg. Das Calcium scheint intracellulär zu liegen, wobei der größte Teil (90% oder mehr) in einem Zentrifugalfeld leicht mit intracellulären Partikeln sedimentiert, während die Zellflüssigkeit im Gleichgewicht bleibt. Kinetische Studien mittels45Ca zeigen einen raschen, temperaturabhängigen Umbau von Calcium sowohl im löslichen als auch im unlöslichen Calcium-Pool von Knochenzellhomogenaten, ferner einen direkten Austausch zwischen jedem Pool und dem extracellulären Medium, wobei jeder mit verschiedenen Geschwindigkeiten und wahrscheinlich durch verschiedene Mechanismen abläuft, wobei der unlösliche Pool der raschere ist. Diese Resultate lassen vermuten, daß der unlösliche Pool den kleinen dichten Granula entsprechen könnte, welche kürzlich durch Elektronnmikroskopie in Knochenzellen identifiziert wurden, und daß die Aufnahme, Lagerung und Abgabe des Calciums aus diesen Speichern für den Skelet-Calcium-Metabolismus wichtig sein könnte.
    Notes: Abstract The mean calcium content of a mixed population of viable bone cells freshly separated from the calcified bone matrix has been found to be 194.5±7.3 mmoles/kg wet weight in pigs and 176.6±8.7mmoles/kg in rats. The calcium appears to be intracellular, the major portion (90% or more) sedimenting readily with intracellular particles in a centrifugal field and the balance being largely in the cell sap. Kinetic studies using45Ca indicate rapid temperature-dependent turnover of the calcium in both soluble and particulate calcium pools of bone cell homogenates and a direct exchange between each pool and the extracellular medium, each occurring at a different rate and possibly by different mechanisms, the particulate pool being the more rapid. These data suggest that the particulate pool may correspond to the small dense granules recently identified in bone cells by electron microscopy and that the uptake, storage and release of calcium from these stores may be important in skeletal calcium metabolism.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 2 (1968), S. 51-51 
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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