Schlagwort(e):
Physiology.
;
Electronic books.
Materialart:
Online-Ressource
Seiten:
1 online resource (1232 pages)
Ausgabe:
5th ed.
ISBN:
9780323913904
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=30832353
DDC:
612
Sprache:
Englisch
Anmerkung:
Front Cover -- FELDMAN AND PIKE'S VITAMIN D -- FELDMAN AND PIKE'S VITAMIN D: Volume One: Biochemistry, Physiology and Diagnostics -- Copyright -- Contents -- List of contributors -- In memoriam -- Preface to the fifth edition -- List of abbreviations -- Relevant lab values in adults and children -- 1 - Book introduction: Major trends in vitamin D research -- 1. History of the Vitamin D book -- 2. Major trends in the vitamin D field -- 3. Mechanism of action -- 3.1 Historical progression of the mechanisms of action of vitamin D -- 3.2 Current state of VDR genomic actions -- 3.3 Mechanistic homeostasis of vitamin D metabolism -- 4. Mutations in the VDR and critical metabolic enzymes cause childhood rickets -- 5. Vitamin D assays -- 6. Extra-skeletal actions -- 7. Population studies and clinical trials -- 8. Controversy: what constitutes normal or adequate concentrations of vitamin D? -- 9. Vitamin D and autoimmune disease -- 10. Vitamin D and COVID-19 -- 11. Vitamin D and cancer -- 12. Is vitamin D useful for the prevention or treatment of colorectal cancer? -- 12.1 Background -- 12.2 Vitamin D molecular actions in CRC and various cancers to reduce cancer risk, progression, and improve survival -- 12.3 Observational studies of vitamin D and the risk/incidence of developing CRC -- 12.4 Recent RCTs on risk/incidence and overall survival/mortality -- 12.5 Conclusions on the colorectal cancer section -- 13. Closing comments with thanks and appreciation to the many authors, the critical Elsevier staff, and the many readers that m ... -- References -- 2 - Evolution of human skin pigmentation and vitamin D -- 1. Introduction -- 2. The solar context of human skin color evolution -- 3. The nature of the selective factors leading to the evolution of skin pigmentation in early Homo.
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4. Folate conservation and the evolution of permanent protective pigmentation -- 5. Early hominin dispersal out of the tropics and vitamin D production -- 6. The evolution of skin pigmentation in Homo sapiens -- 7. The effects of cultural buffering, rapid migrations, and modern lifestyles on skin color and vitamin D -- 8. Summary points -- References -- Further reading -- 3 - Photobiology of vitamin D -- 1. Introduction -- 2. Historical perspective -- 3. Photobiology of vitamin D -- 3.1 Photosynthesis of vitamin D3 -- 3.2 Regulation of vitamin D synthesis by sunlight -- 3.3 Influence of latitude, season, and time of day on vitamin D synthesis -- 3.4 Influence of sunscreen use, melanin, clothing, glass, and plastics on vitamin D synthesis -- 3.5 Optimizing sunscreen formulation to enhance vitamin D production with minimal erythemal risk -- 4. Role of sunlight and dietary vitamin D in bone health, overall health, and well-being -- 5. Ultraviolet devices for producing vitamin D -- 6. Alternative pathways generating noncanonical active forms of vitamin D and their photoderivatives -- 7. Sunlight, vitamin D, and skin cancer -- 8. Conclusions -- 9. Summary points -- Acknowledgment -- References -- Further reading -- 4 - The activating enzymes of vitamin D metabolism (25- and 1α-hydroxylases) -- 1. Introduction -- 2. General information regarding vitamin D hydroxylases -- 3. Vitamin D3-25-hydroxylases -- 3.1 CYP2R1 -- 3.2 CYP27A1 -- 3.3 Other CYPs -- 4. 25-Hydroxyvitamin D-1α-hydroxylase -- 5. Additional topics -- 5.1 Crystal structures and homology models of vitamin D-related CYPs -- 5.2 Inhibitors of vitamin D-related CYP enzymes -- 5.3 Future directions -- 6. Conclusions -- 7. Summary points -- References -- Further reading -- 5 - CYP24A1: structure, function, and physiological role -- 1. Introduction -- 2. CYP24A1-catalyzed pathways.
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3. C24-oxidation pathway -- 4. C23-hydroxylation pathway -- 5. CYP24A1, a multifunctional enzyme -- 6. Biological relevance of the C24-oxidation pathway -- 7. Structure-function relationships -- 8. Mutations of CYP24A1 in infantile hypercalcemia type 1 -- 9. Preclinical models of infantile hypercalcemia type 1 -- 10. CYP24A1 involvement in other systems -- 11. 24,25(OH)2D3 and chondrocyte maturation -- 12. 24,25(OH)2D3 and fracture repair -- 13. Conclusions -- 14. Summary points -- References -- 6 - Alternative pathways for vitamin D metabolism -- 1. Introduction -- 2. Cytochrome P450scc (CYP11A1): an overview -- 3. Introduction to the skin in a photobiology context -- 4. CYP11A1 mediated metabolism of 7DHC with local and systemic implications -- 5. CYP11A1-mediated metabolism of vitamin D -- 6. Enzymatic activation of lumisterol and tachysterol -- 7. Phenotypic activity of CYP11A1-derived hydroxyderivatives and their mechanism of action -- 7.1 Phenotypic activity -- 7.2 Mechanism of action -- 8. C3-epimerization of vitamin D metabolites -- 9. Phase II conjugation of vitamin D metabolites -- 10. Conclusions -- 11. Summary points -- Acknowledgment -- References -- 7 - Vitamin D-binding protein -- 1. Introduction -- 2. Vitamin D-binding protein: gene and protein structure -- 2.1 Gene -- 2.2 Protein structure -- 2.3 Polymorphisms of vitamin D-binding protein -- 2.4 Post-translational modifications to DBP -- 2.5 Vitamin D-binding protein: synthesis and turnover -- 3. Functions of vitamin D-binding protein -- 3.1 Vitamin D transport -- 3.2 Measurement of vitamin D-binding protein in serum -- 3.3 Vitamin D-binding protein-null mice -- 3.4 Vitamin D-binding protein-null humans -- 3.5 Megalin- and megalin-related proteins-null mice -- 3.6 Free 25(OH)D and vitamin D status -- 4. The vitamin D-binding protein-actin complex.
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4.1 Role of vitamin D-binding protein in the actin-scavenger system -- 4.2 General features of the vitamin D-binding protein-actin structure -- 4.3 Implications for the actin-scavenger system -- 4.4 Implications for intracellular actin binding -- 5. DBP binds fatty acids -- 6. The role of vitamin D-binding protein in inflammatory processes and in the immune system -- 7. Conclusions -- 8. Summary points -- References -- 8 - Regulation of renal vitamin D metabolism -- 1. Introduction -- 2. Major physiologic regulators of renal vitamin D metabolism -- 2.1 Substrate 25(OH)D3 bioavailability -- 2.2 Parathyroid hormone -- 2.3 Fibroblast growth factor 23 -- 2.4 The vitamin D hormone 1,25(OH)2D3 -- 3. Genomic structure and deletion of the CYP27B1 and CYP24A1 genes -- 4. Genomic mechanisms for CYP27B1 regulation -- 5. Genomic mechanisms for CYP24A1 regulation -- 6. Conclusions -- 7. Summary points -- Acknowledgments -- References -- 9 - Regulation of extra-renal synthesis of 1,25(OH)2D -- 1. Introduction -- 2. 1α-OHase and the CYP27B1 gene -- 2.1 Subcellular localization, substrate selectivity, and kinetics of 1α-OHase -- 3. Macrophage 1α-OHase -- 3.1 Effects of parathyroid hormone, calcium, and phosphate on macrophage 1α-OHase -- 3.2 Effects of FGF23 on macrophage 1α-OHase -- 3.3 Vitamin D binding protein and 25(OH)D substrate bioavailability in macrophages -- 3.4 Vitamin D catabolism and macrophage 1,25(OH)2D production -- 4. Macrophage 1α-OHase and responsiveness to immune cell regulators -- 4.1 Pathogen-associated molecular patterns -- 4.2 Cytokines -- 5. Molecular mechanisms for regulation of extrarenal 1α-OHase -- 5.1 Transcriptional regulation -- 5.2 Immune regulation of nitric oxide and electron transport -- 5.3 MicroRNAs as regulators of 1α-OHase -- 6. 1α-OHase in cells other than macrophages -- 6.1 Dendritic cells -- 6.2 Lymphocytes.
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6.3 Keratinocytes -- 6.4 The placenta -- 6.5 Endothelial cells -- 6.6 The parathyroid gland -- 6.7 The growth plate and bone -- 6.8 The brain -- 7. Dysregulated synthesis of 1,25(OH)2D and human disease -- 7.1 1α-OHase and inflammatory disease -- 7.2 Extrarenal 1α-OHase and cancer -- 8. Conclusions and future prospects -- 9. Summary points -- References -- 10 - Structural basis for ligand activity in vitamin D receptor -- 1. Introduction -- 1.1 1α,25-Dihydroxyvitamin D3 recognition by vitamin D receptor -- 1.1.1 Crystal structure of human vitamin D receptor ligand-binding domain in complex with 1α,25-dihydroxyvitamin D3 -- 1.1.2 Rat and zebrafish vitamin D receptor ligand-binding domain-1α,25-dihydroxyvitamin D3 complexes -- 1.1.3 Insights into the apo vitamin D receptor ligand binding-domain structure -- 1.2 Ligand recognition of natural metabolites -- 1.3 Other vitamin D receptor natural ligands -- 1.4 Crystal structures of vitamin D receptor ligand-binding Domain with lithocholic acid -- 1.4.1 An alternative lithocholic acid-binding site revealed by the zebrafish vitamin D receptor ligand-binding domain-lithocholic ... -- 1.5 Structural implications of VDR mutants manifesting in hereditary vitamin d-resistant rickets phenotypes -- 1.6 Recent development of synthetic VDR ligands -- 1.7 Secosteroidal analogs of 1,25(OH)2D3 -- 1.7.1 LCA derivatives -- 1.8 Mimics of 1,25(OH)2D3 -- 1.9 Allosteric effect of 1,25(OH)2D3 within intact VDR-RXR and coregulatory function -- 2. Conclusions and perspectives -- 3. Summary points -- References -- 11 - Genome-wide perspectives on vitamin D receptor actions -- 1. Introduction -- 2. Target genes involved in the regulation of mineral metabolism -- 3. The production of 1,25(OH)2D3 in diverse nonrenal target cells -- 4. Transcriptional mechanism of action of 1,25(OH)2D3.
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5. New insights into transcriptional activation of vitamin D.
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