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Vitamin D, An Issue of Endocrinology and Metabolism Clinics of North America, E-Book

Vitamin D, An Issue of Endocrinology and Metabolism Clinics of North America, E-Book

Sol Epstein

(2010)

Additional Information

Abstract

This issue covers essential topics in endocrinology and Vitamin D, providing the most up-to-date information. Subject matter covered includes the extra-skeletal effects, nutritional needs, Vit D. assays, Rickets, osteomalacia, immune properties of Vit. D, oseoporosis, Vit. D analogs and properties, renal disease, Vit D receptor, cancer, and diabetes.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Contributors iii
Contents vii
Foreword xiii
Preface xvii
Chapter 1. Vitamin D:Metabolism 243
SYNTHESIS OF 1,25(OH)2D3 FROM VITAMIN D3 243
ROLE OF THE VITAMIN D BINDING PROTEIN IN VITAMIN D METABOLISM AND ACTION 244
REGULATION OF RENAL VITAMIN D HYDROXYLASES 245
EXTRARENAL 1-HYDROXYLASE (1α(OH)ASE) 248
VITAMIN D P450S IN AGING AND CHRONIC KIDNEY DISEASE 248
REFERENCES 249
Chapter 2. The Vitamin D Receptor: New Paradigms for the Regulation of Gene Expression by 1,25- Dihydroxyvitamin D3 255
VDR STRUCTURE AND FUNCTION 256
VITAMIN D TARGET GENES 257
NEW APPROACHES REVEAL NEW INSIGHTS INTO VITAMIN D3–MEDIATED GENE REGULATION 260
GENOME-WIDE STUDIES REVEAL OVERARCHING PRINCIPLES OF GENE REGULATION 264
SUMMARY 265
ACKNOWLEDGMENTS 265
REFERENCES 266
Chapter 3. Assessment and Interpretation of Circulating 25- Hydroxyvitamin D and 1,25-Dihydroxyvitamin D in the Clinical Environment 271
METHODS OF 25(OH)D QUANTITATION 272
DETERMINING ANALYTICAL RECOVERY OF 25(OH)D2 AND 25(OH)D3 IN HUMAN SERUM OR PLASMA 274
DETERMINING AND DEFINING A ‘‘NORMAL’’ CIRCULATING 25(OH)D LEVEL 277
CLINICAL REPORTING OF CIRCULATING 25(OH)D CONCENTRATIONS 277
METHODS OF 1,25(OH)2D QUANTITATION 279
DETERMINING AND DEFINING A ‘‘NORMAL’’ CIRCULATING 1,25(OH)2D LEVEL 280
STABILITY OF 25(OH)D AND 1,25(OH)2D IN SERUM OR PLASMA 281
STANDARDIZATION OF 25(OH)D AND 1,25(OH)2D ANALYSIS 281
SUMMARY 282
REFERENCES 282
Chapter 4. Low Vitamin D Status: Definition, Prevalence, Consequences, and Correction 287
VITAMIN D BACKGROUND AND ASSESSMENT 287
LOW VITAMIN D STATUS: DEFINITION AND PREVALENCE 288
LOW VITAMIN D STATUS: CONSEQUENCES 291
APPROACHES TO VITAMIN D REPLETION/SUPPLEMENTATION 293
WHAT IS VITAMIN D TOXICITY? 294
DOES THE EFFECT OF VITAMIN D2 DIFFER FROM THAT OF VITAMIN D3? 295
SUMMARY 295
REFERENCES 295
Chapter 5. Maternal Vitamin D Status: Implications for the Development of Infantile Nutritional Rickets 303
CAUSE AND EPIDEMIOLOGY OF INFANTILE NUTRITIONAL RICKETS 304
VITAMIN D AND CALCIUM HOMEOSTASIS IN THE MOTHER-INFANT PAIR DURING PREGNANCY AND LACTATION 307
CONSEQUENCES OF VITAMIN D DEFICIENCY IN MOTHER-INFANT PAIRS 311
RECOMMENDATIONS FOR THE PREVENTION OF VITAMIN D DEFICIENCY IN MOTHER AND CHILD 312
SUMMARY 315
REFERENCES 316
Chapter 6. Osteomalacia as a Result of Vitamin D Deficiency 321
HISTORICAL PERSPECTIVE AND SCOPE OF THE PROBLEM 321
CLINICAL MANIFESTATIONS OF OSTEOMALACIA 323
RADIOLOGICAL FEATURES OF OSTEOMALACIA 327
SKELETAL FRACTURES 328
BIOCHEMICAL CHANGES IN OSTEOMALACIA 329
DIAGNOSTIC APPROACH TO OSTEOMALACIA 329
TREATMENT OF OSTEOMALACIA 330
REFERENCES 330
Chapter 7. Genetic Disorders and Defects in Vitamin D Action 333
1a-HYDROXYLASE DEFICIENCY IN CHILDREN 334
MUTATIONS IN THE CYP27B1 GENE AS THE MOLECULAR BASIS FOR 1a-HYDROXYLASE DEFICIENCY 334
MOUSE MODELS OF 1α-HYDROXYLASE DEFICIENCY 335
HVDRR IN CHILDREN 337
MUTATIONS IN THE VDR GENE AS THE MOLECULAR BASIS FOR HVDRR 337
MOUSE MODELS OF HVDRR 340
THERAPY FOR HVDRR 340
ALOPECIA 341
SUMMARY 342
REFERENCES 342
Chapter 8. Vitamin D and Fracture Prevention 347
GOING BEYOND BONE 347
VITAMIN D: ITS ROLE IN MUSCLE HEALTH 348
VITAMIN D: ITS ROLE IN BONE HEALTH 349
ADDING CALCIUM TO VITAMIN D 350
SUMMARY 350
REFERENCES 351
Chapter 9. Vitamin D in Kidney Disease: Pathophysiology and the Utility of Treatment 355
CALCIUM 355
CKD-MBD 356
NORMAL VITAMIN D PHYSIOLOGY 356
VITAMIN D METABOLISM IN KIDNEY DISEASE 357
PHOSPHORUS 358
ROLE OF VITAMIN D TREATMENT IN CKD-MBD 358
EFFECTS OF VITAMIN D ON THE CARDIOVASCULAR SYSTEM 359
VITAMIN D AND OVERALL SURVIVAL 359
OTHER POTENTIALLY BENEFICIAL EFFECTS OF VITAMIN D TREATMENT IN CKD 359
SUMMARY 360
REFERENCES 360
Chapter 10. Vitamin D and the Immune System: New Perspectives on an Old Theme 365
HISTORICAL PERSPECTIVE 365
VITAMIN D AND INNATE IMMUNITY 366
VITAMIN D AND ADAPTIVE IMMUNITY 369
VITAMIN D, THE IMMUNE SYSTEM AND HUMAN HEALTH 371
SUMMARY 373
REFERENCES 373
Chapter 11. Vitamin D: Extraskeletal Health 381
SOURCES OF VITAMIN D 381
HISTORICAL PERSPECTIVE ON EXTRASKELETAL EFFECTS OF VITAMIN D 382
CANCER PREVENTION 383
PSORIASIS 387
VITAMIN D AND AUTOIMMUNE DISEASES 389
INNATE IMMUNITY 390
CARDIOVASCULAR HEALTH 393
TYPE 2 DIABETES 394
SUMMARY 394
REFERENCES 395
Chapter 12. The Role of Vitamin D in Cancer Prevention and Treatment 401
EPIDEMIOLOGY 401
MECHANISMS OF THE ANTICANCER EFFECTS OF CALCITRIOL 402
ANTICANCER EFFECTS OF CALCITRIOL IN ANIMAL MODELS 406
CLINICAL STUDIES 407
SUMMARY 410
REFERENCES 410
Chapter 13. Vitamin D and Diabetes 419
TYPE 1 DIABETES 420
TYPE 2 DIABETES 426
GESTATIONAL DIABETES 432
VITAMIN D AND DIABETES COMPLICATIONS 432
SUMMARY 434
REFERENCES 435
Chapter 14. Vitamin D Analogs 447
PHARMACOLOGICALLY IMPORTANT VITAMIN D COMPOUNDS 447
CLINICAL APPLICATIONS OF VITAMIN D COMPOUNDS 454
CRITERIA THAT INFLUENCE PHARMACOLOGIC EFFECTS OF VITAMIN D COMPOUNDS 457
VDR/RXR/VDRE 458
MEMBRANE RECEPTORS AND NONGENOMIC EFFECTS OF VITAMIN D ANALOGS 462
PROPOSED MOLECULAR MECHANISMS OF ACTION OF VITAMIN D COMPOUNDS 463
FUTURE PROSPECTS 463
ACKNOWLEDGMENTS 464
REFERENCES 464
Index 473