Research Topics
Species | BYRON L RIGGSSummaryAffiliation: Mayo Clinic Country: USA Publications
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Publications
Sex steroids and the construction and conservation of the adult skeletonB Lawrence Riggs
Division of Endocrinology and Metabolism, Department of Health Sciences Research, Mayo Clinic and Mayo Foundation, 200 First Street SW, Rochester, Minnesota 55905, USA
Endocr Rev 23:279-302. 2002..Thus, both sex steroids are important for developing peak bone mass, but E deficiency is the major determinant of age-related bone loss in both sexes...
Population-based study of age and sex differences in bone volumetric density, size, geometry, and structure at different skeletal sitesB Lawrence Riggs
Endocrine Research Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, 200 First Street SW, 5 194 Joseph, Rochester, MN 55905, USA
J Bone Miner Res 19:1945-54. 2004..Over life, the cross-sectional area of the vertebrae and proximal femur increased by approximately 15% in both sexes, whereas vBMD at these sites decreased by 39-55% and 34-46%, respectively, with greater decreases in women than in men...
Drugs used to treat osteoporosis: the critical need for a uniform nomenclature based on their action on bone remodelingB Lawrence Riggs
Endocrine Research Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
J Bone Miner Res 20:177-84. 2005..We hope that this classification will serve as a starting point for continued discussion on the important issue of nomenclature...
Evidence that type I osteoporosis results from enhanced responsiveness of bone to estrogen deficiencyB Lawrence Riggs
Department of Health Sciences Research, Mayo Clinic and Mayo Foundation, 200 First Street SW, MN 55905, Rochester, USA
Osteoporos Int 14:728-33. 2003..This is consistent with the hypothesis that the greater bone loss in type I osteoporosis is the result of impaired responsiveness of bone to low postmenopausal levels of sex steroids...
Population-based analysis of the relationship of whole bone strength indices and fall-related loads to age- and sex-specific patterns of hip and wrist fracturesB Lawrence Riggs
Endocrine Research Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 21:315-23. 2006..These load/strength ratios more closely simulated patterns of wrist and hip fractures occurring in the same population than did measurement of vBMD...
Effects of loss of steroid receptor coactivator-1 on the skeletal response to estrogen in miceUlrike I L Modder
Mayo Clinic, 200 First Street SW, 5 194 Joseph, Rochester, MN 55905, USA
Endocrinology 145:913-21. 2004..These findings establish that, in mice, loss of SRC-1 leads to skeletal resistance to E predominantly in cancellous bone...
Mediators of the biphasic responses of bone to intermittent and continuously administered parathyroid hormoneRachel M Locklin
Division of Endocrinology, Metabolism and Nutrition, Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Cell Biochem 89:180-90. 2003....
A population-based assessment of rates of bone loss at multiple skeletal sites: evidence for substantial trabecular bone loss in young adult women and menB Lawrence Riggs
Endocrine Research Unit, Division of Endocrinology and Metabolism, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
J Bone Miner Res 23:205-14. 2008..Cortical bone loss began in perimenopause in women and later in life in men. In contrast, trabecular bone loss began in young adulthood in both sexes...
Role of RANK ligand in mediating increased bone resorption in early postmenopausal womenGuitty Eghbali-Fatourechi
Endocrine Research Unit, Mayo Clinic and Foundation, 200 First Street SW, Rochester, MN 55905, USA
J Clin Invest 111:1221-30. 2003..The data suggest that upregulation of RANKL on bone marrow cells is an important determinant of increased bone resorption induced by estrogen deficiency...
Estrogen receptor isoform-specific induction of progesterone receptors in human osteoblastsDavid J Rickard
Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55905, USA
J Bone Miner Res 17:580-92. 2002..Together, these results show that although estrogen can up-regulate endogenous PR gene expression in osteoblasts via both ER isoforms, ER-alpha is the predominant inducer...
Role of low levels of endogenous estrogen in regulation of bone resorption in late postmenopausal womenHassan M Heshmati
Division of Endocrinology and Metabolism, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Bone Miner Res 17:172-8. 2002....
Circulating osteoblast-lineage cells in humansGuiti Z Eghbali-Fatourechi
Endocrine Research Unit, Mayo Clinic College of Medicine, Rochester, Minn 55905, USA
N Engl J Med 352:1959-66. 2005....
Evaluation of a prediction model for long-term fracture riskL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 20:551-6. 2005..CONCLUSIONS: This study validates the ability of a statistical model based on femoral neck aBMD and common clinical risk factors to predict the actual occurrence of fractures in a cohort of postmenopausal white women...
Relative contributions of bone density, bone turnover, and clinical risk factors to long-term fracture predictionL Joseph Melton
Division of Epidemiology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Bone Miner Res 18:312-8. 2003..Identifying patients at increased long-term risk of fracture is challenging, but it is reassuring that femoral neck bone mineral density can predict osteoporotic fractures up to 20 years later...
Role of parathyroid hormone in mediating age-related changes in bone resorption in menKurt A Kennel
Endocrine Research Unit, Division of Endocrinology, Metabolism and Nutrition, Department of Internal Medicine, Mayo Clinic and Foundation, Rochester, Minn. 55905, USA
Osteoporos Int 14:631-6. 2003..Since both estrogen and testosterone can attenuate the bone resorbing effects of PTH, it is possible that this difference may be due to the much milder degree of sex steroid deficiency in elderly men as compared to postmenopausal women...
Pathophysiology of age-related bone loss and osteoporosisSundeep Khosla
Division of Endocrinology, Metabolism, and Nutrition, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
Endocrinol Metab Clin North Am 34:1015-30, xi. 2005
Hormonal and biochemical determinants of trabecular microstructure at the ultradistal radius in women and menSundeep Khosla
Mayo Clinic, Endocrine Research Unit, 200 First Street SW, 5 194 Joseph, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 91:885-91. 2006....
Osteoporosis assessment by whole body region vs. site-specific DXAL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, 200 First Street S.W, Rochester, MN 55905, USA
Osteoporos Int 16:1558-64. 2005....
Relationship of volumetric BMD and structural parameters at different skeletal sites to sex steroid levels in menSundeep Khosla
Endocrine Research Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 20:730-40. 2005..Associations between these bone mass/structural parameters and sex steroid levels were progressively stronger with age. Our previously postulated "threshold" for skeletal estrogen deficiency was most evident at cortical sites...
Native osteoprotegerin gene transfer inhibits the development of murine osteolytic bone disease induced by tumor xenograftsPatrick M Doran
Molecular Medicine Program, Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, Minn. 55905, USA
Exp Hematol 32:351-9. 2004....
Effects of sex and age on bone microstructure at the ultradistal radius: a population-based noninvasive in vivo assessmentSundeep Khosla
Endocrine Research Unit, Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 21:124-31. 2006..Compared with women, men had thicker trabeculae in young adulthood and had less microstructural damage with aging. These findings may contribute to the virtual immunity of men to age-related increases in wrist fractures...
High serum IGFBP-2 is predictive of increased bone turnover in aging men and womenShreyasee Amin
Division of Rheumatology, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 22:799-807. 2007..Studying an age-stratified community-based sample of 344 men and 276 women, IGFBP-2 was the strongest predictor of increased bone resorption among the IGF/IGFBPs studied...
Relationship of volumetric bone density and structural parameters at different skeletal sites to sex steroid levels in womenSundeep Khosla
Mayo Clinic, Endocrine Research Unit, 200 First Street SW, 5 194 Joseph, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 90:5096-103. 2005..There are no data testing this in women...
The role of the immune system in the pathophysiology of osteoporosisJackie A Clowes
Mayo Clinic College of Medicine, Endocrine Research Unit, St Mary s Hospital, Rochester, MN 55905, USA
Immunol Rev 208:207-27. 2005..Although significant progress has been made, there remains much to be done in unraveling this complex interaction between the immune system and bone...
Does reduced skeletal loading account for age-related bone loss?L Joseph Melton
Division of Epidemiology, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 21:1847-55. 2006..Moreover, interindividual variation in the strength-to-load ratios was substantial. These data suggest that the notion of reduced skeletal loading as the primary basis for age-related bone loss is oversimplified...
Contributions of bone density and structure to fracture risk assessment in men and womenL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
Osteoporos Int 16:460-7. 2005..Because of the strong correlations, however, some judgment can be used in selecting the variables easiest to measure...
A potentially deleterious role of IGFBP-2 on bone density in aging men and womenShreyasee Amin
Division of Rheumatology, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 19:1075-83. 2004..IGFBP-2, which increases with age in both men and women, was the strongest, most consistent predictor of BMD among the IGF/IGFBPs studied...
Relation of vertebral deformities to bone density, structure, and strengthL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
J Bone Miner Res 25:1922-30. 2010..Thus significantly impaired bone density, structure, and strength compared with controls indicate that many grade 1 deformities do represent early osteoporotic fractures, with corresponding implications for clinical decision making...
A bone structural basis for fracture risk in diabetesL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic, 200 First Street Southwest, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 93:4804-9. 2008..Elevated areal bone mineral density (aBMD) in type 2 diabetes mellitus is inconsistent with increased fracture risk at some skeletal sites...
A fragment of the hypophosphatemic factor, MEPE, requires inducible cyclooxygenase-2 to exert potent anabolic effects on normal human marrow osteoblast precursorsD E Nagel
Endocrine Research Unit, Division of Endocrinology, Metabolism and Nutrition, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
J Cell Biochem 93:1107-14. 2004..Thus, AC-100 has potent anabolic activity on osteoblast precursor cells in vitro and these effects require the induction of COX-2...
A genetic basis for the "Adonis" phenotype of low adiposity and strong bonesGeoffrey B Johnson
Transplantation Biology, Mayo Clinic College of Medicine, 200 First St SW, 2 66 Medical Sciences Building, Rochester, Minnesota, MN 55905, USA p
FASEB J 18:1282-4. 2004..Thus, defects in TLR4/CD14 complex generate an "Adonis" phenotype, characterized by this ideal body type, and this function could potentially be exploited for the treatment of osteoporosis and obesity...
Clinical review 144: Estrogen and the male skeletonSundeep Khosla
Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 87:1443-50. 2002....
Relationship of estrogen receptor genotypes to bone mineral density and to rates of bone loss in menSundeep Khosla
Endocrine Research Unit, Division of Endocrinology, Metabolism, and Nutrition, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 89:1808-16. 2004....
Estrogen receptor isoform-specific regulation of endogenous gene expression in human osteoblastic cell lines expressing either ERalpha or ERbetaDavid G Monroe
Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55905, USA
J Cell Biochem 90:315-26. 2003....
Effect of blockade of TNF-alpha and interleukin-1 action on bone resorption in early postmenopausal womenNatthinee Charatcharoenwitthaya
Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
J Bone Miner Res 22:724-9. 2007..This is consistent with an important role for these immune cytokines in mediating the effect of estrogen deficiency on bone...
Structural determinants of vertebral fracture riskL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
J Bone Miner Res 22:1885-92. 2007..Vertebral fractures are more strongly associated with specific bone density, structure, and strength parameters than with areal BMD, but all of these variables are correlated...
Role of the vitamin D-endocrine system in the pathophysiology of postmenopausal osteoporosisB Lawrence Riggs
Endocrine Research Unit, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
J Cell Biochem 88:209-15. 2003..Nonetheless, a minority of them, especially nutritional vitamin D deficiency and impaired 25(OH)D 1alpha-hydroxylase activity late in life, appear to be primary and are independent of estrogen deficiency...
Relation of serum serotonin levels to bone density and structural parameters in womenUlrike I Mödder
Endocrine Research Unit, College of Medicine, Mayo Clinic, Rochester, MN, USA
J Bone Miner Res 25:415-22. 2010..Collectively, our data provide support for a physiologic role for circulating serotonin in regulating bone mass in humans...
Selective estrogen-receptor modulators -- mechanisms of action and application to clinical practiceB Lawrence Riggs
Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
N Engl J Med 348:618-29. 2003
Changes in Runx2/Cbfa1 expression and activity during osteoblastic differentiation of human bone marrow stromal cellsChaoxiang Shui
Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Bone Miner Res 18:213-21. 2003..Our findings also show that the increase in Runx2/Cbfa1 activity occurs through a posttranslational mechanism involving phosphorylation of key residues...
Fracture risk after bilateral oophorectomy in elderly womenL Joseph Melton
Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Bone Miner Res 18:900-5. 2003....
Bone structure at the distal radius during adolescent growthSalman Kirmani
College of Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
J Bone Miner Res 24:1033-42. 2009..Whether these deficits are more severe in children who sustain forearm fractures or persist into later life warrants further study...
Contribution of in vivo structural measurements and load/strength ratios to the determination of forearm fracture risk in postmenopausal womenL Joseph Melton
Division of Epidemology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
J Bone Miner Res 22:1442-8. 2007..Bone structure, strength and load-strength ratios contribute to forearm fracture risk independently of areal BMD...
Circulating osteogenic cells: characterization and relationship to rates of bone loss in postmenopausal womenAnita Undale
Endocrine Research Unit, College of Medicine, Mayo Clinic, Rochester, MN 55905, USA
Bone 47:83-92. 2010..Our study also provides "proof-of-concept" for the use of PB lin-/AP+ cells in clinical-investigative studies, and identifies several pathways that could potentially regulate rates of bone loss in postmenopausal women...
Effects of parathyroid hormone treatment on circulating sclerostin levels in postmenopausal womenMatthew T Drake
Division of Endocrinology and Metabolism, College of Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA
J Clin Endocrinol Metab 95:5056-62. 2010..Intermittent PTH treatment stimulates bone formation, but the mechanism(s) of this effect remain unclear. Sclerostin is an inhibitor of Wnt signaling, and animal studies have demonstrated that PTH suppresses sclerostin production...
Costs and strategies in minority recruitment for osteoporosis researchMiriam A Marquez
Office of Diversity in Clinical Research, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA
J Bone Miner Res 18:3-8. 2003..These results should contribute to more realistic budgets for recruiting minority subjects into clinical research studies...
Dose-response of estrogen on bone versus the uterus in ovariectomized miceUlrike I L Modder
Endocrine Research Unit, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
Eur J Endocrinol 151:503-10. 2004..This issue needs to be considered in evaluating agents with potential 'selective' effects on bone versus reproductive tissues...
Incidence of childhood distal forearm fractures over 30 years: a population-based studySundeep Khosla
Endocrine Research Unit, Division of Endocrinology, Metabolism, and Nutrition, Department of Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minn 55905, USA
JAMA 290:1479-85. 2003..Given the large number of childhood fractures, however, studies are needed to define the cause(s) of this increase...
Effect of estrogen replacement therapy on parathyroid hormone secretion in elderly postmenopausal womenAnn Vincent
Endocrine Research Unit, Division of Endocrinology, Metabolism, and Nutrition, Department of Internal Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA
Menopause 10:165-71. 2003....
Endocrine causes of age-related bone loss and osteoporosisB Lawrence Riggs
Endocrine Research Unit, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA
Novartis Found Symp 242:247-59; discussion 260-4. 2002..Other changes in endocrine secretion, although present in the elderly, seem less important in the pathophysiology of age-related bone loss and osteoporosis...
Bone turnover matters: the raloxifene treatment paradox of dramatic decreases in vertebral fractures without commensurate increases in bone densityB Lawrence Riggs
J Bone Miner Res 17:11-4. 2002
Age- and sex-specific differences in the factor of risk for vertebral fracture: a population-based study using QCTMary L Bouxsein
Orthopedic Biomechanics Laboratory, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215, USA
J Bone Miner Res 21:1475-82. 2006..With age, vertebral strength declined and Phi(vert) increased significantly more in women than men. Age- and sex-specific differences in Phi(vert) closely resembled previously reported vertebral fracture incidence...
Research Grants
- EPIDEMIOLOGY OF AGE-RELATED BONE LOSS AND FRACTURESB Riggs; Fiscal Year: 1990....
- EPIDEMIOLOGY OF AGE RELATED BONE LOSS AND FRACTURESB Riggs; Fiscal Year: 2001..The new bone structure measurements should take us to a new level of understanding of the causes of age-related bone loss and fractures and improve substantially the assessment of risk for osteoporosis. ..
