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Abstract
Peak bone mass (PBM) is a key determinant of bone mass and fragility fractures later in life. The increase in bone mass during childhood and adolescence is mainly related to an increase in bone size rather to changes in volumetric bone density. Race, gender, and genetic factors are the main determinants of PBM achievement. Nevertheless, environmental factors such as physical activity, calcium and protein intakes, weight and age at menarche, are also playing an important role in bone mass accrual during growth. Therefore, optimization of calcium and protein intakes and weight-bearing physical activity during growth is an important strategy for optimal acquisition of PBM and bone strength and for contributing to prevent fractures later in life.
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Affiliation(s)
- Thierry Chevalley
- Service of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
| | - René Rizzoli
- Service of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
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Noirrit-Esclassan E, Valera MC, Tremollieres F, Arnal JF, Lenfant F, Fontaine C, Vinel A. Critical Role of Estrogens on Bone Homeostasis in Both Male and Female: From Physiology to Medical Implications. Int J Mol Sci 2021; 22:ijms22041568. [PMID: 33557249 PMCID: PMC7913980 DOI: 10.3390/ijms22041568] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 02/07/2023] Open
Abstract
Bone is a multi-skilled tissue, protecting major organs, regulating calcium phosphate balance and producing hormones. Its development during childhood determines height and stature as well as resistance against fracture in advanced age. Estrogens are key regulators of bone turnover in both females and males. These hormones play a major role in longitudinal and width growth throughout puberty as well as in the regulation of bone turnover. In women, estrogen deficiency is one of the major causes of postmenopausal osteoporosis. In this review, we will summarize the main clinical and experimental studies reporting the effects of estrogens not only in females but also in males, during different life stages. Effects of estrogens on bone involve either Estrogen Receptor (ER)α or ERβ depending on the type of bone (femur, vertebrae, tibia, mandible), the compartment (trabecular or cortical), cell types involved (osteoclasts, osteoblasts and osteocytes) and sex. Finally, we will discuss new ongoing strategies to increase the benefit/risk ratio of the hormonal treatment of menopause.
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Affiliation(s)
- Emmanuelle Noirrit-Esclassan
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Pediatric Dentistry, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
| | - Marie-Cécile Valera
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Pediatric Dentistry, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
| | - Florence Tremollieres
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Menopause and Metabolic Bone Disease Center, Hôpital Paule de Viguier, University Hospital of Toulouse, F-31000 Toulouse, France
| | - Jean-Francois Arnal
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Françoise Lenfant
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Coralie Fontaine
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
| | - Alexia Vinel
- I2MC, INSERM UMR 1297, University of Toulouse III, F-31000 Toulouse, France; (E.N.-E.); (M.-C.V.); (F.T.); (J.-F.A.); (F.L.); (C.F.)
- Department of Periodontology, Faculty of Dental Surgery, University of Toulouse III, F-31000 Toulouse, France
- Correspondence: ; Tel.: +33-5-61-77-36-10
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Adolescent Sport Participation and Age at Menarche in Relation to Midlife Body Composition, Bone Mineral Density, Fitness, and Physical Activity. J Clin Med 2020; 9:jcm9123797. [PMID: 33255351 PMCID: PMC7760316 DOI: 10.3390/jcm9123797] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 12/23/2022] Open
Abstract
This study aimed to investigate the associations of competitive sport participation in adolescence and age at menarche (AAM) with body composition, femoral neck bone mineral density (BMD), physical performance, and physical activity (PA) in middle-aged women. 1098 women aged 47–55 years formed the sample of this retrospective study. Participants self-reported their PA level at age 13–16 years and AAM. The protocol also included dual-energy X-ray absorptiometry, physical performance tests, and accelerometer-measured PA. Participants were divided into three groups according to their PA level at the age of 13–16 (no exercise, regular PA, and competitive sport) and according to their AAM (≤12, 13, and ≥14 years). After adjusting for potential confounding factors, participation in competitive sport at age 13–16 was associated with higher midlife lean mass and BMD, and better physical performance compared to groups with no exercise or regular PA. Individuals with AAM ≥ 14 years had lower midlife BMI and fat mass than participants in the other AAM groups and pre- and perimenopausal women with AAM ≥ 14 years had lower BMD than those with AAM ≤ 12. The findings indicate that participation in competitive sport in adolescence is associated with healthier body composition, higher BMD, and better physical performance in midlife, but BMD might be impaired if menarche occurs late.
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Lee KMN, Rogers-LaVanne MP, Galbarczyk A, Jasienska G, Clancy KBH. Bone density and frame size in adult women: Effects of body size, habitual use, and life history. Am J Hum Biol 2020; 33:e23502. [PMID: 32935454 DOI: 10.1002/ajhb.23502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 07/31/2020] [Accepted: 08/09/2020] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Bone mineral density (BMD) and frame size are important predictors of future bone health, with smaller frame size and lower BMD associated with higher risk of later fragility fractures. We test the effects of body size, habitual use, and life history on frame size and cortical BMD of the radius and tibia in sample of healthy adult premenopausal women. METHODS We used anthropometry and life history data from 123 women (age 18-46) from rural Poland. Standard techniques were used to measure height, weight, and body fat. Life history factors were recorded using surveys. Grip strength was measured as a proxy for habitual activity, wrist breadth for skeletal frame size. Cortical BMD was measured at the one-third distal point of the radius and mid-point of the tibia using quantitative ultrasound (reported as speed of sound, SoS). RESULTS Radial SoS was high (mean t-score 3.2 ± 1.6), but tibia SoS was average (mean t-score 0.35 ± 1.17). SoS was not associated with age, although wrist breadth was positively associated with age after adjusting for height. Radius SoS was not associated with measures of body size, habitual use, or life history factors. Wrist breadth was associated with body size (p < .05 for all), lean mass, and grip strength. Tibia SoS was associated with height. Life history factors were not associated with frame size or cortical SoS. CONCLUSIONS Habitual use and overall body size are more strongly associated with frame size and cortical SoS than life history factors in this sample of healthy adult women.
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Affiliation(s)
- Katharine M N Lee
- Department of Anthropology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Mary P Rogers-LaVanne
- Department of Anthropology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
| | - Andrzej Galbarczyk
- Department of Environmental Health, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Grazyna Jasienska
- Department of Environmental Health, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Kathryn B H Clancy
- Department of Anthropology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.,Beckman Institute of Advanced Science & Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA
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Macdonald HM, Maan EJ, Berger C, Dunn RA, Côté HCF, Murray MCM, Pick N, Prior JC. Deficits in bone strength, density and microarchitecture in women living with HIV: A cross-sectional HR-pQCT study. Bone 2020; 138:115509. [PMID: 32599222 DOI: 10.1016/j.bone.2020.115509] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 12/27/2022]
Abstract
PURPOSE With the advent of combined antiretroviral therapy (cART), life expectancy has increased among persons living with HIV, but so too has risk for comorbidities including osteoporosis and fragility fracture. To explore whether HIV status and cART influence three-dimensional measures of BMD, bone microarchitecture and strength we aimed to compare these outcomes between women living with HIV (WLWH; n = 50; 50.4 ± 1.2 years, 44% postmenopausal) and without HIV (controls; n = 50; 51.8 ± 1.2 years, 52% postmenopausal). METHODS Outcomes were lumbar spine, total hip and femoral neck areal BMD by DXA; distal radius and tibia trabecular BMD, thickness and number, and cortical BMD and area by HR-pQCT; and finite element analysis-derived bone strength (failure load). Multivariable regression analysis compared bone outcomes between groups adjusting for known osteoporosis risk factors. Within WLWH, we examined associations between bone outcomes and HIV-related factors including disease severity and cART duration. RESULTS WLWH were diagnosed 20 ± 4 years ago, were on cART for 123 ± 37 months and 80% had HIV plasma viral load <40 copies/mL. For women ≥50 years (n = 61), total hip aBMD T-Score was lower among WLWH than controls. Adjusted distal radius trabecular BMD and thickness and distal tibia trabecular BMD and failure load were 8-19% lower in WLWH than controls (p < 0.05). Cortical BMD and area did not differ between groups at either site. Lifetime cART duration and current plasma viral load were not associated with bone outcomes in WLWH; however, previous treatment with tenofovir was negatively associated with distal radius trabecular BMD and trabecular number and LS aBMD T-score. CONCLUSIONS WLWH have compromised BMD, bone microarchitecture and strength vs. controls of similar age and reproductive status. Treatment with tenofovir may contribute to bone deficits in WLWH.
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Affiliation(s)
- Heather M Macdonald
- Department of Family Practice, Faculty of Medicine, University of British Columbia, 5950 University Blvd, Vancouver, British Columbia V6T 1Z3, Canada; Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, 2735 Laurel St, Vancouver, British Columbia V5Z 1M9, Canada.
| | - Evelyn J Maan
- Oak Tree Clinic, BC Women's Hospital and Health Centre, 4500 Oak St, Vancouver, British Columbia V5Z 0A7, Canada; Women's Health Research Institute, H214-4500 Oak St, Vancouver, British Columbia V6H 3N1, Canada.
| | - Claudie Berger
- Research Institute of the McGill University Health Centre, 2155 Guy Street, Suite 500, Montreal, Quebec H3H 2R9, Canada.
| | - Rachel A Dunn
- Department of Pathology & Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Wesbrook Mall, Vancouver, British Columbia V6T 2B5, Canada; Centre for Blood Research, University of British Columbia, 4302-2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Hélène C F Côté
- Women's Health Research Institute, H214-4500 Oak St, Vancouver, British Columbia V6H 3N1, Canada; Department of Pathology & Laboratory Medicine, University of British Columbia, Rm. G227 - 2211 Wesbrook Mall, Vancouver, British Columbia V6T 2B5, Canada; Centre for Blood Research, University of British Columbia, 4302-2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada.
| | - Melanie C M Murray
- Oak Tree Clinic, BC Women's Hospital and Health Centre, 4500 Oak St, Vancouver, British Columbia V5Z 0A7, Canada; Women's Health Research Institute, H214-4500 Oak St, Vancouver, British Columbia V6H 3N1, Canada; Department of Medicine, Division of Infectious Diseases, University of British Columbia, 328C, Heather Pavilion East, VGH, 2733 Heather Street, Vancouver, British Columbia V5Z 3J5, Canada.
| | - Neora Pick
- Oak Tree Clinic, BC Women's Hospital and Health Centre, 4500 Oak St, Vancouver, British Columbia V5Z 0A7, Canada; Women's Health Research Institute, H214-4500 Oak St, Vancouver, British Columbia V6H 3N1, Canada; Department of Medicine, Division of Infectious Diseases, University of British Columbia, 328C, Heather Pavilion East, VGH, 2733 Heather Street, Vancouver, British Columbia V5Z 3J5, Canada.
| | - Jerilynn C Prior
- Women's Health Research Institute, H214-4500 Oak St, Vancouver, British Columbia V6H 3N1, Canada; Department of Medicine, Division of Endocrinology, University of British Columbia, Gordon and Leslie Diamond Centre, 2775 Laurel Street, 4th Floor, Vancouver, British Columbia V5Z 1M9, Canada; Centre for Menstrual Cycle and Ovulation Research, The Gordon and Leslie Diamond Health Care Centre, Room 4111 - 4th Floor, 2775 Laurel Street, Vancouver, British Columbia V5Z 1M9, Canada.
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Marcucci G, Beltrami G, Tamburini A, Body JJ, Confavreux CB, Hadji P, Holzer G, Kendler D, Napoli N, Pierroz DD, Rizzoli R, Brandi ML. Bone health in childhood cancer: review of the literature and recommendations for the management of bone health in childhood cancer survivors. Ann Oncol 2020; 30:908-920. [PMID: 31111878 DOI: 10.1093/annonc/mdz120] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In the past decades, new cancer treatment approaches for children and adolescents have led to a decrease in recurrence rates and an increase in long-term survival. Recent studies have focused on the evaluation of the late effects on bone of pediatric cancer-related treatments, such as chemotherapy, radiation and surgery. Treatment of childhood cancer can impair the attainment of peak bone mass, predisposing to premature onset of low bone mineral density, or causing other bone side-effects, such as bone quality impairment or avascular necrosis of bone. Lower bone mineral density and microarchitectural deterioration can persist during adulthood, thereby increasing fracture risk. Overall, long-term follow-up of childhood cancer survivors is essential to define specific groups at higher risk of long-term bone complications, identify unrecognized long-term adverse effects, and improve patient care. Children and adolescents with a cancer history should be carefully monitored, and patients should be informed of possible late complications of their previous medical treatment. The International Osteoporosis Foundation convened a working group to review the bone complications of pediatric cancer survivors, outlining recommendations for the management of bone health, in order to prevent and treat these complications.
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Affiliation(s)
- G Marcucci
- Bone Metabolic Diseases Unit, Department of Biomedical, Experimental and Clinical Sciences, University of Florence
| | - G Beltrami
- Department of Pediatric Orthopaedic Oncology
| | - A Tamburini
- Hematology-Oncology Service, Department of Pediatrics, University Hospital AOU-Careggi, Florence, Italy
| | - J J Body
- Université Libre de Bruxelles, Brussels, Belgium
| | - C B Confavreux
- University of Lyon - INSERM UMR 1033-Lyos - Expert Center for Bone Metastases and Secondary Bone Oncology (CEMOS), Rheumatology Department Hospices Civils de Lyon, Pierre Bénite, France
| | - P Hadji
- Department of Bone Oncology, Endocrinology and Reproductive Medicine, Nord West Hospital, Frankfurt, Germany
| | - G Holzer
- Department of Orthopedics and Traumatology, Medical University of Vienna, Vienna, Austria
| | - D Kendler
- Division of Endocrinology, Department of Medicine, University of British Columbia, Vancouver, Canada
| | - N Napoli
- Unit of Endocrinology and Diabetes, Department of Medicine, Università Campus Bio-Medico di Roma, Roma, Italy; Division of Bone and Mineral Diseases, Washington University in St Louis, St Louis, USA
| | - D D Pierroz
- International Osteoporosis Foundation (IOF), Nyon
| | - R Rizzoli
- Division of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - M L Brandi
- Bone Metabolic Diseases Unit, Department of Biomedical, Experimental and Clinical Sciences, University of Florence.
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Maïmoun L, Garnero P, Mura T, Nocca D, Lefebvre P, Philibert P, Seneque M, Gaspari L, Vauchot F, Courtet P, Sultan A, Piketty ML, Sultan C, Renard E, Guillaume S, Mariano-Goulart D. Specific Effects of Anorexia Nervosa and Obesity on Bone Mineral Density and Bone Turnover in Young Women. J Clin Endocrinol Metab 2020; 105:5672712. [PMID: 31821467 DOI: 10.1210/clinem/dgz259] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 12/09/2019] [Indexed: 02/04/2023]
Abstract
OBJECTIVE The threefold aim was to (1) compare areal bone mineral density (aBMD), bone turnover markers, and periostin levels in young women with either anorexia nervosa (AN) or obesity (OB) and controls (CON); (2) model the profiles according to age; and (3) determine the parameters associated with aBMD. SUBJECTS AND METHODS One hundred and fifty-two young women with ages ranging from 16.0 to 27.0 years were subdivided into 3 groups (AN, OB, CON). The CON group was age-matched by ±6 months. aBMD, bone turnover markers, and periostin levels were evaluated. RESULTS aBMD modeling showed that hip aBMD was higher in OB than in the other 2 groups from 19 years, and AN presented lower values than CON from 21 years. aBMD at the lumbar spine was higher in older OB and CON women, starting from 20 to 22 years, but in AN the difference with the other 2 groups increased with age. Periostin levels were lower in OB than in AN or CON, but no variation with age was observed. Compared with controls, OB and AN presented similarly lower markers of bone formation, although markers of bone resorption were lower in OB and higher in AN. A modeling approach showed that markers of bone formation and resorption were lower in older than in younger CON, whereas the values of these bone markers remained relatively constant in AN and OB. In all groups, lean body mass (LBM) was the parameter most positively correlated with aBMD. CONCLUSION This study demonstrated that weight extremes (AN or OB) influence aBMD, bone remodeling and periostin profiles. Moreover, factors related to aBMD were specific to each condition, but LBM was the parameter most consistently associated with aBMD.
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Affiliation(s)
- Laurent Maïmoun
- Département de Médecine Nucléaire, Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, Montpellier, France
- PhyMedExp, Université de Montpellier (UM), INSERM, CNRS, Montpellier, France
| | | | - Thibault Mura
- Unité de Recherche Clinique et Epidémiologie, Hôpital Lapeyronie, CHRU Montpellier, Montpellier, France
| | - David Nocca
- Département de Chirurgie Digestive, Hôpital St Eloi, CHRU Montpellier
| | - Patrick Lefebvre
- Departement d'Endocrinologie, Diabète, Nutrition, Hôpital Lapeyronie, CHRU Montpellier, Montpellier, France
| | - Pascal Philibert
- Departement de Biochimie et d'Hormonologie, Hôpital Lapeyronie, CHRU Montpellier, Montpellier, France
| | - Maude Seneque
- Département d'Urgence et Post-Urgence Psychiatrique, Hôpital Lapeyronie, CHRU Montpellier, UM, INSERM U1061, Montpellier, France
| | - Laura Gaspari
- Unité d'Endocrinologie et Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve, CHRU Montpellier et UM, Montpellier, France
| | - Fabien Vauchot
- Département de Médecine Nucléaire, Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, Montpellier, France
| | - Philippe Courtet
- Département d'Urgence et Post-Urgence Psychiatrique, Hôpital Lapeyronie, CHRU Montpellier, UM, INSERM U1061, Montpellier, France
| | - Ariane Sultan
- PhyMedExp, Université de Montpellier (UM), INSERM, CNRS, Montpellier, France
- Département Endocrinologie, Nutrition, Diabète; Equipe Nutrition, Diabète, Hôpital Lapeyronie, CHRU Montpellier, Montpellier, France
| | | | - Charles Sultan
- Unité d'Endocrinologie et Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve, CHRU Montpellier et UM, Montpellier, France
| | - Eric Renard
- Departement d'Endocrinologie, Diabète, Nutrition, Hôpital Lapeyronie, CHRU Montpellier, Montpellier, France
- CIC INSERM 1001, Hôpital Gui de Chauliac, CHRU Montpellier, France
- Institut de Génomique Fonctionnelle, CNRS UMR 5203/INSERM U661/UM, Montpellier, France
| | - Sébastien Guillaume
- Département d'Urgence et Post-Urgence Psychiatrique, Hôpital Lapeyronie, CHRU Montpellier, UM, INSERM U1061, Montpellier, France
| | - Denis Mariano-Goulart
- Département de Médecine Nucléaire, Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire (CHRU) Montpellier, Montpellier, France
- PhyMedExp, Université de Montpellier (UM), INSERM, CNRS, Montpellier, France
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Pubertal timing and adult fracture risk in men: A population-based cohort study. PLoS Med 2019; 16:e1002986. [PMID: 31790400 PMCID: PMC6886748 DOI: 10.1371/journal.pmed.1002986] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 11/04/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Puberty is a critical period for bone mass accrual, and late puberty in boys is associated with reduced bone mass in adult men. The role of variations in pubertal timing within the normal range for adult fracture risk in men is, however, unknown. We, therefore, assessed the association between age at peak height velocity (PHV), an objective measure of pubertal timing, and fracture risk in adult men. METHODS AND FINDINGS In the BMI Epidemiology Study Gothenburg, 31,971 Swedish men born between January 1, 1945, and December 31, 1961, with detailed growth data (height and weight) available from centrally archived school healthcare records and the conscription register were followed until December 31, 2016. Age at PHV was calculated according to a modified infancy-childhood-puberty model, and fracture information was retrieved from the Swedish National Patient Register. The mean ± SD age at PHV was 14.1 ± 1.1 years. In total, 5,872 men (18.4%) sustained at least 1 fracture after 20 years of age and 5,731 men (17.9%) sustained a non-vertebral fracture after 20 years of age during a mean ± SD follow-up of 37.3 ± 11.7 years. Cox proportional hazards models adjusted for birth year and country of origin revealed that age at PHV was associated with the risk of any fracture and non-vertebral fracture. Participants with age at PHV in the highest tertile (after 14.5 years of age) were at greater risk of any fracture (hazard ratio [HR] 1.15, 95% confidence interval [CI] 1.08-1.22, P < 0.001) and non-vertebral fracture (HR 1.16, 95% CI 1.09-1.24, P < 0.001) compared with those with age at PHV in the lowest tertile (at 13.6 years of age or younger). Additional adjustments for birthweight, childhood BMI, adult educational level, and young adult height did not attenuate the associations between age at PHV and adult fracture risk. Limitations of this study include the inability to adjust for important risk factors for fracture, inadequate power to assess the relation between pubertal timing and specific fracture types, and the limited generalizability to other populations. CONCLUSIONS In this study, we observed that late pubertal timing was associated with increased adult fracture risk in men. These findings suggest that information on pubertal timing might aid in the identification of those men at greatest risk of fracture.
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Penner J, Ferrand RA, Richards C, Ward KA, Burns JE, Gregson CL. The impact of vitamin D supplementation on musculoskeletal health outcomes in children, adolescents, and young adults living with HIV: A systematic review. PLoS One 2018; 13:e0207022. [PMID: 30439968 PMCID: PMC6237309 DOI: 10.1371/journal.pone.0207022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 10/22/2018] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE HIV-positive children, adolescents, and young adults are at increased risk poor musculoskeletal outcomes. Increased incidence of vitamin D deficiency in youth living with HIV may further adversely affect musculoskeletal health. We investigated the impact of vitamin D supplementation on a range of musculoskeletal outcomes among individuals aged 0-25 years living with HIV. METHODS A systematic review was conducted using databases: PubMed/Medline, CINAHL, Web of Knowledge, and EMBASE. Interventional randomised control trials, quasi-experimental trials, and previous systematic reviews/meta-analyses were included. Outcomes included: BMD, BMC, fracture incidence, muscle strength, linear growth (height-for-age Z-score [HAZ]), and biochemical/endocrine biomarkers including bone turnover markers. RESULTS Of 497 records, 20 studies met inclusion criteria. Thirteen studies were conducted in North America, one in Asia, two in Europe, and four in Sub-Saharan Africa. High-dose vitamin D supplementation regimens (1,000-7,000 IU/day) were successful in achieving serum 25-hydroxyvitamin-D (25OHD) concentrations above study-defined thresholds. No improvements were observed in BMD, BMC, or in muscle power, force and strength; however, improvements in neuromuscular motor skills were demonstrated. HAZ was unaffected by low-dose (200-400 IU/day) supplementation. A single study found positive effects on HAZ with high-dose supplementation (7,000 vs 4,000IU/day). CONCLUSIONS Measured bone outcomes were unaffected by high-dose vitamin D supplementation, even when target 25OHD measurements were achieved. This may be due to: insufficient sample size, follow-up, intermittent dosing, non-standardised definitions of vitamin D deficiency, or heterogeneity of enrolment criteria pertaining to baseline vitamin D concentration. High-dose vitamin D may improve HAZ and neuromuscular motor skills. Adequately powered trials are needed in settings where HIV burden is greatest. PROSPERO Number: CRD42016042938.
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Affiliation(s)
- Justin Penner
- University of Manitoba, Winnipeg, Canada
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Department of Paediatrics, University of British Columbia, Vancouver, Canada
| | - Rashida A. Ferrand
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | | | - Kate A. Ward
- MRC Lifecourse Epidemiology, University of Southampton, Southampton, United Kingdom
| | - James E. Burns
- Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom
- Queen Elizabeth University Hospital, Greater Glasgow & Clyde NHS Trust, Glasgow, United Kingdom
| | - Celia L. Gregson
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
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Goshtasebi A, Berger C, Barr SI, Kovacs CS, Towheed T, Davison KS, Prior JC. Adult Premenopausal Bone Health Related to Reproductive Characteristics-Population-Based Data from the Canadian Multicentre Osteoporosis Study (CaM os). INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E1023. [PMID: 29783670 PMCID: PMC5982062 DOI: 10.3390/ijerph15051023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/04/2018] [Accepted: 05/07/2018] [Indexed: 01/10/2023]
Abstract
Amenorrhea is important for women's bone health. However, few have reported reproductive, anthropometric (body mass index [BMI], height) and bone health (areal bone mineral density [BMD], prevalent fractures) in a population-based study. The purposes of this cross-sectional study of women in the randomly-selected Canadian Multicentre Osteoporosis Study (CaMos) population were: (1) to describe reproductive, demographic, anthropometric and lifestyle variables; and (2) in menstruating women, to relate reproductive and other variables to BMD at the lumbar spine (L1-4, LS), femoral neck (FN) and total hip (TH) sites and to prevalent fragility fractures. This study describes the reproductive characteristics of 1532 women aged 30⁻60 years. BMD relationships with reproductive and other variables were described in the 499 menstruating women. Mean menarche age was 12.8 years, 96% of women were parous and 95% had used combined hormonal contraceptives (CHC). Infertility was reported by 9%, androgen excess by 13%, amenorrhea by 8% and nulliparity by 4%. LS BMD was negatively associated with amenorrhea and androgen excess and positively related to current BMI and height. A later age at menarche negatively related to FN BMD. BMI and height were strongly related to BMD at all sites. Prevalent fragility fractures were significantly associated with quartiles of both LS and TH BMD.
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Affiliation(s)
- Azita Goshtasebi
- Centre for Menstrual Cycle and Ovulation Research; University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Claudie Berger
- Canadian Multicentre Osteoporosis Study, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3S5, Canada.
| | - Susan I Barr
- Centre for Menstrual Cycle and Ovulation Research; University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Food, Nutrition and Health Program, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Christopher S Kovacs
- Medicine (Endocrinology and Metabolism), Obstetrics & Gynecology, and BioMedical Sciences, Memorial University of Newfoundland, St. John's, NL A1B 3V6, Canada.
| | - Tanveer Towheed
- Medicine and Public Health, Queens University, Kingston, ON, K7L 3N6 Canada.
| | - K Shawn Davison
- A Priori Medical Sciences Inc., Victoria, BC V8R 3E3 Canada.
| | - Jerilynn C Prior
- Centre for Menstrual Cycle and Ovulation Research; University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Department of Medicine, Division of Endocrinology and Metabolism, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
- BC Women's Health Research Institute, Vancouver, BC V6H 2N9, Canada.
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12
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Rozental TD, Johannesdottir F, Kempland KC, Bouxsein ML. Characterization of trabecular bone microstructure in premenopausal women with distal radius fractures. Osteoporos Int 2018; 29:409-419. [PMID: 29101409 DOI: 10.1007/s00198-017-4293-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/27/2017] [Indexed: 11/30/2022]
Abstract
UNLABELLED Individual trabecular segmentation was utilized to identify differences in trabecular bone structure in premenopausal women with wrist fractures and non-fracture controls. Fracture subjects had reduced trabecular plate volume, number, thickness, and connectivity. Identifying altered trabecular microarchitecture in young women offers opportunities for counseling and lifestyle modifications to reduce fracture risk. INTRODUCTION Premenopausal women with distal radius fractures (DRF) have worse trabecular bone microarchitecture than non-fracture controls (CONT), yet the characteristics of their trabecular bone structure are unknown. METHODS Premenopausal women with DRF (n = 40) and CONT (n = 80) were recruited. Primary outcome variables included trabecular structure at the distal radius and tibia, assessed by volumetric decomposition of individual trabecular plates and rods from high-resolution peripheral quantitative CT images. Trabecular morphology included plate and rod number, volume, thickness, and connectivity. Areal bone mineral density (aBMD) of the femoral neck (FN aBMD), and ultradistal radius (UDR aBMD) were measured by DXA. RESULTS Trabecular morphology differed between DRF and CONT at the radius and tibia (OR per SD decline 1.58-2.7). At the radius, associations remained significant when adjusting for age and FN aBMD (ORs = 1.76-3.26) and age and UDR aBMD (ORs = 1.72-3.97). Plate volume fraction, number and axially aligned trabeculae remained associated with DRF after adjustment for trabecular density (ORs = 2.55-2.85). Area under the curve (AUC) for discriminating DRF was 0.74 for the proportion of axially aligned trabeculae, compared with 0.60 for FN aBMD, 0.65 for UDR aBMD, and 0.69 for trabecular density. Plate number, plate-plate junction, and axial bone volume fraction remained associated with DRF at the tibia (ORs = 2.14-2.77) after adjusting for age, FN aBMD, or UDR aBMD. AUCP.P.Junc.D was 0.72 versus 0.61 for FNaBMD, 0.66 for UDRaBMD, and 0.70 for trabecular density. CONCLUSION Premenopausal women with DRF have lower trabecular plate volume, number, thickness, and connectivity than CONT. Identification of young women with altered microarchitecture offers opportunities for lifestyle modifications to reduce fracture risk.
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Affiliation(s)
- T D Rozental
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Harvard University, 330 Brookline Avenue - Stoneman 10, Boston, MA, 02215, USA.
| | - F Johannesdottir
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Orthopedic Biomechanics Laboratory, RN 119, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - K C Kempland
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Harvard University, 330 Brookline Avenue - Stoneman 10, Boston, MA, 02215, USA
| | - M L Bouxsein
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Orthopedic Biomechanics Laboratory, RN 119, 330 Brookline Avenue, Boston, MA, 02215, USA
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13
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Abstract
Delayed puberty is a common condition defined as the lack of sexual maturation by an age ≥2 SD above the population mean. In the absence of an identified underlying cause, the condition is usually self-limited. Although self-limited delayed puberty is largely believed to be a benign developmental variant with no long-term consequences, several studies have suggested that delayed puberty may in fact have both harmful and protective effects on various adult health outcomes. In particular, height and bone mineral density have been shown to be compromised in some studies of adults with a history of delayed puberty. Delayed puberty may also negatively affect adult psychosocial functioning and educational achievement, and individuals with a history of delayed puberty carry a higher risk for metabolic and cardiovascular disorders. In contrast, a history of delayed puberty appears to be protective for breast and endometrial cancer in women and for testicular cancer in men. Most studies on adult outcomes of self-limited delayed puberty have been in small series with significant variability in outcome measures and study criteria. In this article, we review potential medical and psychosocial issues for adults with a history of self-limited delayed puberty, discuss potential mechanisms underlying these issues, and identify gaps in knowledge and directions for future research.
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Affiliation(s)
- Jia Zhu
- Division of Endocrinology, Department of Medicine, Boston Children’s Hospital, Boston, Massachusetts
| | - Yee-Ming Chan
- Division of Endocrinology, Department of Medicine, Boston Children's Hospital, Boston, Massachusetts
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Abstract
Bone health in children with rheumatic conditions may be compromised due to several factors related to the inflammatory disease state, delayed puberty, altered life style, including decreased physical activities, sun avoidance, suboptimal calcium and vitamin D intake, and medical treatments, mainly glucocorticoids and possibly some disease-modifying anti-rheumatic drugs. Low bone density or even fragility fractures could be asymptomatic; therefore, children with diseases of high inflammatory load, such as systemic onset juvenile idiopathic arthritis, juvenile dermatomyositis, systemic lupus erythematosus, and those requiring chronic glucocorticoids may benefit from routine screening of bone health. Most commonly used assessment tools are laboratory testing including serum 25-OH-vitamin D measurement and bone mineral density measurement by a variety of methods, dual-energy X-ray absorptiometry as the most widely used. Early disease control, use of steroid-sparing medications such as disease-modifying anti-rheumatic drugs and biologics, supplemental vitamin D and calcium, and promotion of weight-bearing physical activities can help optimize bone health. Additional treatment options for osteoporosis such as bisphosphonates are still controversial in children with chronic rheumatic diseases, especially those with decreased bone density without fragility fractures. This article reviews common risk factors leading to compromised bone health in children with chronic rheumatic diseases and discusses the general approach to prevention and treatment of bone fragility.
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15
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Almeida M, Laurent MR, Dubois V, Claessens F, O'Brien CA, Bouillon R, Vanderschueren D, Manolagas SC. Estrogens and Androgens in Skeletal Physiology and Pathophysiology. Physiol Rev 2017; 97:135-187. [PMID: 27807202 PMCID: PMC5539371 DOI: 10.1152/physrev.00033.2015] [Citation(s) in RCA: 466] [Impact Index Per Article: 66.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Estrogens and androgens influence the growth and maintenance of the mammalian skeleton and are responsible for its sexual dimorphism. Estrogen deficiency at menopause or loss of both estrogens and androgens in elderly men contribute to the development of osteoporosis, one of the most common and impactful metabolic diseases of old age. In the last 20 years, basic and clinical research advances, genetic insights from humans and rodents, and newer imaging technologies have changed considerably the landscape of our understanding of bone biology as well as the relationship between sex steroids and the physiology and pathophysiology of bone metabolism. Together with the appreciation of the side effects of estrogen-related therapies on breast cancer and cardiovascular diseases, these advances have also drastically altered the treatment of osteoporosis. In this article, we provide a comprehensive review of the molecular and cellular mechanisms of action of estrogens and androgens on bone, their influences on skeletal homeostasis during growth and adulthood, the pathogenetic mechanisms of the adverse effects of their deficiency on the female and male skeleton, as well as the role of natural and synthetic estrogenic or androgenic compounds in the pharmacotherapy of osteoporosis. We highlight latest advances on the crosstalk between hormonal and mechanical signals, the relevance of the antioxidant properties of estrogens and androgens, the difference of their cellular targets in different bone envelopes, the role of estrogen deficiency in male osteoporosis, and the contribution of estrogen or androgen deficiency to the monomorphic effects of aging on skeletal involution.
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Affiliation(s)
- Maria Almeida
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Michaël R Laurent
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Vanessa Dubois
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Frank Claessens
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Charles A O'Brien
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Roger Bouillon
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Dirk Vanderschueren
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
| | - Stavros C Manolagas
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Healthcare System, Little Rock, Arkansas; Departments of Cellular and Molecular Medicine and Clinical and Experimental Medicine, KU Leuven, Leuven, Belgium; Center for Metabolic Bone Diseases, University Hospitals Leuven, Leuven, Belgium; and Institut National de la Santé et de la Recherche Médicale UMR1011, University of Lille and Institut Pasteur de Lille, Lille, France
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16
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Maïmoun L, Paris F, Coste O, Sultan C. [Intensive training and menstrual disorders in young female: Impact on bone mass]. ACTA ACUST UNITED AC 2016; 44:659-663. [PMID: 27751748 DOI: 10.1016/j.gyobfe.2016.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 09/09/2016] [Indexed: 10/20/2022]
Abstract
Participation in recreational physical activity is widely acknowledged to provide significant health benefits. Conversely, intense training imposes several constraints, such as intermittent or chronic metabolic and psychogenic training stressors and maintenance of very low body fat to maximize performance. Adolescent and adult athletic women are therefore at risk of overtraining and/or poor dietary intake, which may have several consequences for endocrine function particularly on hypothalamic-pituitary-gonadal axis. Female athletes, particularly those participating in sports needing leanness or low body weight, present a high prevalence of menstrual disorders with clinical manifestations ranging from delayed menarche, oligomenorrhea to primary and secondary amenorrhea. A high degree of variability according to the type of sport and the intensity of the practice is however observed. Exercise-related reproductive dysfunction may have some consequences for growth velocity and peak bone mass acquisition during adolescence and bone pathologies in adults. Recent findings highlight the endocrine role of adipose tissue and energy balance in the regulation of homeostasis and reproductive function. A better understanding of the mechanisms whereby intense training affects the endocrine systems may orient research to develop innovative strategies probably based on individualized nutritional approach to improve the medical care of these female athletes and protect their reproductive function.
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Affiliation(s)
- L Maïmoun
- Service de médecine nucléaire, hôpital Lapeyronie, université de Montpellier 1 (UM1), CHRU de Montpellier, 34295 Montpellier, France; PhyMedExp, University of Montpellier, Inserm U1046, CNRS UMR 9214, 34295 Montpellier cedex 5, France.
| | - F Paris
- Unité d'endocrinologie et gynécologie pédiatrique, département de pédiatrie, hôpital A.-de-Villeneuve, UMI, CHRU de Montpellier, 34295 Montpellier, France
| | - O Coste
- Direction régionale de la jeunesse, des sports et de la cohésion sociale Languedoc Roussillon/Midi-Pyrénées, France
| | - C Sultan
- Unité d'endocrinologie et gynécologie pédiatrique, département de pédiatrie, hôpital A.-de-Villeneuve, UMI, CHRU de Montpellier, 34295 Montpellier, France
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17
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Mishra GD, Chung HF, Pandeya N, Dobson AJ, Jones L, Avis NE, Crawford SL, Gold EB, Brown D, Sievert LL, Brunner E, Cade JE, Burley VJ, Greenwood DC, Giles GG, Bruinsma F, Goodman A, Hayashi K, Lee JS, Mizunuma H, Kuh D, Cooper R, Hardy R, Obermeyer CM, Lee KA, Simonsen MK, Yoshizawa T, Woods NF, Mitchell ES, Hamer M, Demakakos P, Sandin S, Adami HO, Weiderpass E, Anderson D. The InterLACE study: Design, data harmonization and characteristics across 20 studies on women's health. Maturitas 2016; 92:176-185. [PMID: 27621257 DOI: 10.1016/j.maturitas.2016.07.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 07/28/2016] [Accepted: 07/28/2016] [Indexed: 12/14/2022]
Abstract
OBJECTIVES The International Collaboration for a Life Course Approach to Reproductive Health and Chronic Disease Events (InterLACE) project is a global research collaboration that aims to advance understanding of women's reproductive health in relation to chronic disease risk by pooling individual participant data from several cohort and cross-sectional studies. The aim of this paper is to describe the characteristics of contributing studies and to present the distribution of demographic and reproductive factors and chronic disease outcomes in InterLACE. STUDY DESIGN InterLACE is an individual-level pooled study of 20 observational studies (12 of which are longitudinal) from ten countries. Variables were harmonized across studies to create a new and systematic synthesis of life-course data. MAIN OUTCOME MEASURES Harmonized data were derived in three domains: 1) socio-demographic and lifestyle factors, 2) female reproductive characteristics, and 3) chronic disease outcomes (cardiovascular disease (CVD) and diabetes). RESULTS InterLACE pooled data from 229,054 mid-aged women. Overall, 76% of the women were Caucasian and 22% Japanese; other ethnicities (of 300 or more participants) included Hispanic/Latin American (0.2%), Chinese (0.2%), Middle Eastern (0.3%), African/black (0.5%), and Other (1.0%). The median age at baseline was 47 years (Inter-quartile range (IQR): 41-53), and that at the last follow-up was 56 years (IQR: 48-64). Regarding reproductive characteristics, half of the women (49.8%) had their first menstruation (menarche) at 12-13 years of age. The distribution of menopausal status and the prevalence of chronic disease varied considerably among studies. At baseline, most women (57%) were pre- or peri-menopausal, 20% reported a natural menopause (range 0.8-55.6%) and the remainder had surgery or were taking hormones. By the end of follow-up, the prevalence rates of CVD and diabetes were 7.2% (range 0.9-24.6%) and 5.1% (range 1.3-13.2%), respectively. CONCLUSIONS The scale and heterogeneity of InterLACE data provide an opportunity to strengthen evidence concerning the relationships between reproductive health through life and subsequent risks of chronic disease, including cross-cultural comparisons.
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Affiliation(s)
- Gita D Mishra
- School of Public Health, The University of Queensland, Brisbane, Queensland, Australia.
| | - Hsin-Fang Chung
- School of Public Health, The University of Queensland, Brisbane, Queensland, Australia
| | - Nirmala Pandeya
- School of Public Health, The University of Queensland, Brisbane, Queensland, Australia
| | - Annette J Dobson
- School of Public Health, The University of Queensland, Brisbane, Queensland, Australia
| | - Lee Jones
- School of Public Health, The University of Queensland, Brisbane, Queensland, Australia
| | - Nancy E Avis
- Department of Social Sciences and Health Policy, Wake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, NC, USA
| | - Sybil L Crawford
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Ellen B Gold
- Department of Public Health Sciences, University of California Davis, Davis, CA, USA
| | - Daniel Brown
- Department of Anthropology, University of Hawaii, Hilo, HI, USA
| | | | - Eric Brunner
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Janet E Cade
- Nutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK
| | - Victoria J Burley
- Nutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK
| | - Darren C Greenwood
- Nutritional Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK
| | - Graham G Giles
- Cancer Epidemiology Center, Cancer Council Victoria, Melbourne, Victoria, Australia
| | - Fiona Bruinsma
- Cancer Epidemiology Center, Cancer Council Victoria, Melbourne, Victoria, Australia
| | - Alissa Goodman
- Institute of Education, Center for Longitudinal Studies, University of London, London, UK
| | - Kunihiko Hayashi
- School of Health Sciences, Gunma University, Maebashi City, Gunma Prefecture, Japan
| | - Jung Su Lee
- Department of Health Promotion Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hideki Mizunuma
- Department of Obstetrics and Gynecology, Hirosaki University School of Medicine, Hirosaki, Japan
| | - Diana Kuh
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Rachel Cooper
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Rebecca Hardy
- Medical Research Council Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Carla Makhlouf Obermeyer
- Center for Research on Population and Health, Faculty of Health Sciences, American University of Beirut, Lebanon
| | - Kathryn A Lee
- School of Nursing, University of California, San Francisco, CA, USA
| | | | - Toyoko Yoshizawa
- Department of Women's Health Nursing Tohoku University Graduate School of Medicine, Sendai Japan
| | - Nancy F Woods
- Biobehavioral Nursing and Health Systems, School of Nursing, University of Washington, Seattle, WA, USA
| | - Ellen S Mitchell
- Family and Child Nursing, School of Nursing, University of Washington, Seattle, WA, USA
| | - Mark Hamer
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Panayotes Demakakos
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Sven Sandin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - Hans-Olov Adami
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden; Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Elisabete Weiderpass
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden; Samfundet Folkhälsan, Helsinki, Finland; Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, Tromsø, Norway; Department of Research, Cancer Registry of Norway, Oslo, Norway
| | - Debra Anderson
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
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18
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Kuh D, Muthuri SG, Moore A, Cole TJ, Adams JE, Cooper C, Hardy R, Ward KA. Pubertal timing and bone phenotype in early old age: findings from a British birth cohort study. Int J Epidemiol 2016; 45:1113-1124. [PMID: 27401728 PMCID: PMC5075580 DOI: 10.1093/ije/dyw131] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2016] [Indexed: 12/25/2022] Open
Abstract
Objectives: To investigate the effect of pubertal timing, assessed in adolescence, on bone size, strength and density in men and women in early old age. Design: A British birth cohort study with prospective indicators of pubertal timing based on age at menarche, clinical assessment of pubertal stage, and growth tempo from serial height measures, and bone measures derived from peripheral quantitative computed tomography (pQCT) and dual-energy X-ray absorptiometry (DXA) at 60-64 years of age among 866 women and 792 men. Methods: A first set of regression models investigated the relationships between pubertal timing and bone size, strength and density, adjusting for current height and weight, smoking and adult socioeconomic position. To make an equivalent comparison between men and women, the percentage difference in bone outcomes was calculated for a 5-year difference in age at menarche, and in men a comparison between those who were fully mature or pre-adolescent at 14.5 years. A second set of models investigated the percentage difference in bone outcomes for a 5-year difference in timing of peak height velocity (height tempo) derived from longitudinal growth modelling (Superimposition by Translation and Rotation model; SITAR). Results: After adjustment for current height and weight, a 5-year increase in age at menarche was associated with an 8% [95% confidence interval (CI) -17%, 0.5%, P = 0.07) lower trabecular volumetric bone mineral density (vBMD); men who were pre-adolescent at 14.5 years had a 9%, (95% CI -14%, -4%; P = 0.001) lower trabecular vBMD compared with those who had been fully mature. Other confounders did not attenuate these estimates further. Patterns of association were similar but somewhat weaker for lumbar spine and total hip areal BMD. Age at peak height velocity was associated with even larger differences in BMD in men and women, and was negatively associated with bone size and strength. Conclusions: The association between later puberty and lower BMD persists into early old age. The 9-10% lower trabecular vBMD in later compared with earlier maturers could be clinically important given a rate of bone loss from midlife of 1-2% a year and the negative association between BMD and fracture.
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Affiliation(s)
- Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | | | - Adam Moore
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Tim J Cole
- Population, Policy and Practice Programme, UCL Institute of Child Health, London, UK
| | - Judith E Adams
- Clinical Radiology and Academic Health Science Centre, University of Manchester, Manchester, UK
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton Southampton, UK
| | - Rebecca Hardy
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
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19
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Glass NA, Torner JC, Letuchy EM, Burns TL, Janz KF, Eichenberger Gilmore JM, Schlechte JA, Levy SM. The Relationship Between Greater Prepubertal Adiposity, Subsequent Age of Maturation, and Bone Strength During Adolescence. J Bone Miner Res 2016; 31:1455-65. [PMID: 26861036 PMCID: PMC4960659 DOI: 10.1002/jbmr.2809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 01/28/2016] [Accepted: 02/06/2016] [Indexed: 11/07/2022]
Abstract
This longitudinal study investigated whether greater prepubertal adiposity was associated with subsequent timing of maturation and bone strength during adolescence in 135 girls and 123 boys participating in the Iowa Bone Development Study. Greater adiposity was defined using body mass index (BMI) data at age 8 years to classify participants as overweight (OW, ≥85th percentile for age and sex) or healthy weight (HW). Maturation was defined as the estimated age of peak height velocity (PHV) based on a series of cross-sectional estimates. Measurements were taken at ages 11, 13, 15, and 17 years for estimates of body composition by dual-energy X-ray absorptiometry (DXA), bone compression (bone strength index), and torsion strength (polar strength-strain index) at the radius and tibia by pQCT, and femoral neck bending strength (section modulus) by hip structural analysis. Bone strength in OW versus HW were evaluated by fitting sex-specific linear mixed models that included centered age (visit age - grand mean age of cohort) as the time variable and adjusted for change in fat mass, and limb length in model 1. Analyses were repeated using biological age (visit age - age PHV) as the time variable for model 1 with additional adjustment for lean mass in model 2. BMI was negatively associated with age of maturation (p < 0.05). OW versus HW girls had significantly greater bone strength (p < 0.001) in model 1, whereas OW versus HW boys had significantly greater bone strength (p < 0.001) at the tibia and femoral neck but not radius (p > 0.05). Analyses were repeated using biological age, which yielded reduced parameter estimates for girls but similar results for boys (model 1.) Differences were no longer present after adjustment for lean mass (model 2) in girls (p > 0.05) whereas differences at the tibia were sustained in boys (p < 0.05). These findings demonstrate sex- and site-specific differences in the associations between adiposity, maturation, and bone strength. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Natalie A Glass
- Department of Orthopedics & Rehabilitation, The University of Iowa Hospitals & Clinics, Iowa City, IA, USA
| | - James C Torner
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA
| | - Elena M Letuchy
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA
| | - Trudy L Burns
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA
| | - Kathleen F Janz
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA.,Department of Health and Human Physiology, College of Liberal Arts and Sciences, The University of Iowa, Iowa City, IA, USA
| | - Julie M Eichenberger Gilmore
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA.,Department of Preventive & Community Dentistry, The University of Iowa College of Dentistry & Dental Clinics, Iowa City, IA, USA
| | - Janet A Schlechte
- Department of Internal Medicine, The University of Iowa Hospitals & Clinics; Iowa City, IA, USA
| | - Steven M Levy
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, USA.,Department of Preventive & Community Dentistry, The University of Iowa College of Dentistry & Dental Clinics, Iowa City, IA, USA
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20
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Mallinson RJ, Williams NI, Gibbs JC, Koehler K, Allaway HCM, Southmayd E, De Souza MJ. Current and past menstrual status is an important determinant of femoral neck geometry in exercising women. Bone 2016; 88:101-112. [PMID: 27129885 DOI: 10.1016/j.bone.2016.01.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 12/19/2015] [Accepted: 01/11/2016] [Indexed: 11/21/2022]
Abstract
UNLABELLED Menstrual status, both past and current, has been established as an important determinant of bone mineral density (BMD) in young exercising women. However, little is known regarding the association between the cumulative effect of menstrual status and indices of bone health beyond BMD, such as bone geometry and estimated bone strength. PURPOSE This study explores the association between cumulative menstrual status and indices of bone health assessed using dual-energy x-ray absorptiometry (DXA), including femoral neck geometry and strength and areal BMD (aBMD), in exercising women. METHODS 101 exercising women (22.0±0.4years, BMI 21.0±0.2kg/m(2), 520±40min/week of self-reported exercise) participated in this cross-sectional study. Women were divided into three groups as follows based on their self-reported current and past menstrual status: 1) current and past regular menstrual cycles (C+P-R) (n=23), 2) current and past irregular menstrual cycles (C+P-IR) (n=56), 3) and current or past irregular cycles (C/P-RIR) (n=22). Current menstrual status was confirmed using daily urinary metabolites of reproductive hormones. DXA was used to assess estimates of femoral neck geometry and strength from hip strength analysis (HSA), aBMD, and body composition. Cross-sectional moment of inertia (CSMI), cross-sectional area (CSA), strength index (SI), diameter, and section modulus (Z) were calculated at the femoral neck. Low CSMI, CSA, SI, diameter, and Z were operationally defined as values below the median. Areal BMD (g/cm(2)) and Z-scores were determined at the lumbar spine, femoral neck, and total hip. Low BMD was defined as a Z-score<-1.0. Chi-square tests and multivariable logistic regression were performed to compare the prevalence and determine the odds, respectively, of low bone geometry, strength, and aBMD among groups. RESULTS Cumulative menstrual status was identified as a significant predictor of low femoral neck CSMI (p=0.005), CSA (p≤0.024), and diameter (p=0.042) after controlling for confounding variables. C+P-IR or C/P-RIR were four to eight times more likely to exhibit low femoral neck CSMI or CSA when compared with C+P-R. Lumbar spine aBMD and Z-score were lower in C+P-IR when compared with C+P-R (p≤0.003). A significant association between menstrual group and low aBMD was observed at the lumbar spine (p=0.006) but not at the femoral neck or total hip (p>0.05). However, after controlling for confounding variables, cumulative menstrual status was not a significant predictor of low aBMD. CONCLUSION In exercising women, the cumulative effect of current and past menstrual irregularity appears to be an important predictor of lower estimates of femoral neck geometry, as observed by smaller CSMI and CSA, which may serve as an another means, beyond BMD, by which menstrual irregularity compromises bone strength. As such, evaluation of both current and past menstrual status is recommended to determine potential risk for relatively small bone geometry at the femoral neck.
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Affiliation(s)
- Rebecca J Mallinson
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States.
| | - Nancy I Williams
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States.
| | - Jenna C Gibbs
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States; University of Waterloo, Department of Kinesiology, 200 University Ave W, Waterloo, ON, N2L 3G1, Canada.
| | - Karsten Koehler
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States; University of Nebraska, Department of Nutrition and Health Sciences, Lincoln, NE 68583, United States.
| | - Heather C M Allaway
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States.
| | - Emily Southmayd
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States.
| | - Mary Jane De Souza
- Pennsylvania State University, Department of Kinesiology, Noll Laboratory, University Park, PA 16802, United States.
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21
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Zhu J, Chan YM. Fertility Issues for Patients with Hypogonadotropic Causes of Delayed Puberty. Endocrinol Metab Clin North Am 2015; 44:821-34. [PMID: 26568495 DOI: 10.1016/j.ecl.2015.07.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Delayed puberty presenting with low gonadotropins has multiple causes. Self-limited delay (constitutional delay) is generally considered benign, but adult height and bone mineral density may be compromised, and fertility has not been studied. Functional hypogonadotropic hypogonadism due to a stressor is thought to resolve with removal of the stressor, but reproductive endocrine dysfunction can sometimes persist. Most but not all patients with idiopathic hypogonadotropic hypogonadism, a typically long-lasting condition, can achieve fertility with exogenous hormone therapy. Future studies are needed to determine fertility outcomes in self-limited delayed puberty and to more clearly define prognostic factors for fertility in functional and idiopathic hypogonadotropic hypogonadism.
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Affiliation(s)
- Jia Zhu
- Division of Endocrinology, Department of Medicine, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Yee-Ming Chan
- Division of Endocrinology, Department of Medicine, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA.
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22
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Rizzoli R, Sigaud A, Azria M, Herrmann FR. Nasal salmon calcitonin blunts bone microstructure alterations in healthy postmenopausal women. Osteoporos Int 2015; 26:383-93. [PMID: 25566730 DOI: 10.1007/s00198-014-2937-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 10/08/2014] [Indexed: 11/28/2022]
Abstract
UNLABELLED In healthy postmenopausal women, nasal salmon calcitonin blunted distal radius and tibia bone microstructure degradation. INTRODUCTION Nasal salmon calcitonin (NSC) has been reported to lower vertebral fracture risk by 33%, but to modestly increase spine areal bone mineral density (aBMD) by 1.5%. Thus, NSC may also influence bone microstructure, another known determinant of bone strength. METHODS In a randomized, double-blind, placebo-controlled trial, we investigated the effects of 200 IU/day NSC on distal radius and tibia bone microstructure (by high-resolution 3-dimensional peripheral quantitative computerized tomography), aBMD (by dual-energy X-ray absorptiometry), and serum bone turnover markers in healthy postmenopausal women. RESULTS Mean age was 57.6 ± 0.8 (±SEM) and 57.4 ± 0.7 in NSC (n = 45) and placebo groups (n = 45), respectively. Mean femoral neck T-score was in the osteopenic range; prevalent vertebral fracture was 4% in each group. There was no observed between-group difference in the primary outcome distal radius BV/TV (-2.8 ± 0.6% vs. -4.3 ± 1.0%, NS). By 2 years, the decrease in distal radius total density vs. baseline was 4.4 ± 0.7% in controls and 2.1 ± 0.6% in NSC-receiving patients (p < 0.05). Distal radius and tibia cortical thickness decreased by 3.7 ± 1.0 and 2.4 ± 0.5% in placebo (p < 0.05 vs. baseline for both), respectively, but not in the NSC group. Distal radius total density and cortical thickness changes were lower in NSC group than in placebo (p < 0.05 for both) in the subgroup with baseline C-terminal telopeptides (CTX) above the median. By 6 and 12 months, serum CTX decreased by 17.3 ± 6.2 and 19.1 ± 6.6% (both p < 0.05 vs. baseline), respectively, in NSC, but remained stable in controls (NS vs. baseline). There was no difference in aBMD. NSC was well tolerated, with less arthralgia than the placebo group (14 vs. 26, p < 0.05). CONCLUSION Nasal salmon calcitonin blunted the degradation of distal radius and tibia bone microstructure in healthy postmenopausal women.
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Affiliation(s)
- R Rizzoli
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 1211, Geneva 14, Switzerland,
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23
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Lambrinoudaki I, Flokatoula M, Armeni E, Pliatsika P, Augoulea A, Antoniou A, Alexandrou A, Creatsa M, Panoulis C, Dendrinos S, Papacharalambous X. Vertebral fracture prevalence among Greek healthy middle-aged postmenopausal women: association with demographics, anthropometric parameters, and bone mineral density. Spine J 2015; 15:86-94. [PMID: 25106754 DOI: 10.1016/j.spinee.2014.07.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 07/29/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT The prevalence of skeletal fractures shows a marked geographic variability; however, data regarding the Greek population remain limited. PURPOSE To evaluate the frequency of asymptomatic vertebral fractures (VFs), and potential risk factors, in a large sample of Greek postmenopausal women. STUDY DESIGN A cross-sectional study at the University Menopause Clinic. PATIENT SAMPLE Four hundred fifty-four postmenopausal women aged 35 to 80 years, with an average menopausal age of 9.2±7.1 years. OUTCOME MEASURES They included medical history, anthropometric and biochemical parameters, bone mineral density (BMD) at lumbar spine (LS) and femoral neck (FN), and LS lateral radiographs. METHODS Lumbar spine lateral radiographs were evaluated according to quantitative procedures, aiming to identify VFs. Anthropometric and biochemical parameters and values of BMD were compared according to the presence of VFs. RESULTS A total of 37 (8.15%) women had at least one VF. Lumbar spine and FN-osteoporosis was identified in up to 23.1% and 40.9% subjects with prevalent VFs, respectively. The prevalence of VFs was largely associated with age, with women aged 60 years or more presenting an up to fourfold risk compared with younger women. Moreover, the presence of VFs was associated with higher menopausal age, advanced age at menarche, a history of early menopause, and prolonged lactation. Lower LS-BMD and, especially, FN-BMD were negatively associated with VF prevalence (prevalent VF vs. no VF: LS-BMD, 0.89±0.16 g/cm(2) vs. 0.98±0.16 g/cm(2), p=.010; FN-BMD, 0.72±0.10 g/cm(2) vs. 0.81±0.12 g/cm(2), p=.008). CONCLUSIONS Asymptomatic VFs are common among Greek healthy middle-aged postmenopausal women. More than 50% subjects with prevalent VFs present with normal BMD or osteopenia. Age and bone density classification at the FN presented the strongest association with the prevalence of VFs.
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Affiliation(s)
- Irene Lambrinoudaki
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece.
| | - Maria Flokatoula
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Eleni Armeni
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Paraskevi Pliatsika
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Areti Augoulea
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Aris Antoniou
- 1st Department of Radiology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Andreas Alexandrou
- 1st Department of Surgery, University of Athens, Laiko Athens General Hospital, 17 Agiou Thoma St, GR-11527 Athens, Greece
| | - Maria Creatsa
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Constantinos Panoulis
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Spyridon Dendrinos
- 2nd Department of Obstetrics and Gynecology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
| | - Xenofon Papacharalambous
- 1st Department of Radiology, University of Athens, Aretaieio Hospital, 76 Vas. Sofias Ave., GR-11528, Athens, Greece
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Abstract
Bone mass, geometry and microstructure, and bony tissue material level properties determine bone strength, hence the resistance to fracture. At a given age, all these variables are the consequence of the amount accumulated and of the structure developed during growth, up to the so-called peak bone mass, and of the bone loss and microstructure degradation occurring later in life. Genetic factors primarily contribute to the variance of the determinants of bone strength. Nutritional intakes are environmental factors that influence both processes, either directly by modifying modelling and remodelling, or indirectly through changes in calcitropic hormone secretion and action. Some effects of nutrition on the offspring bone could take place during foetal life. There are interplays between genetic factors, nutritional intakes and physical exercise. Among the nutrients, sufficient dietary intakes of calcium and protein are necessary for bone health in childhood and adolescence as well as later in life.
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Affiliation(s)
- René Rizzoli
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
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25
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Maïmoun L, Georgopoulos NA, Sultan C. Endocrine disorders in adolescent and young female athletes: impact on growth, menstrual cycles, and bone mass acquisition. J Clin Endocrinol Metab 2014; 99:4037-50. [PMID: 24601725 DOI: 10.1210/jc.2013-3030] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
CONTEXT Puberty is a crucial period of dramatic hormonal changes, accelerated growth, attainment of reproductive capacity, and acquisition of peak bone mass. Participation in recreational physical activity is widely acknowledged to provide significant health benefits in this period. Conversely, intense training imposes several constraints, such as training stress and maintenance of very low body fat to maximize performance. Adolescent female athletes are therefore at risk of overtraining and/or poor dietary intake, which may have several consequences for endocrine function. The "adaptive" changes in the hypothalamic-pituitary-gonadal, -adrenal, and somatotropic axes and the secretory role of the adipose tissue are reviewed, as are their effects on growth, menstrual cycles, and bone mass acquisition. DESIGN A systematic search on Medline between 1990 and 2013 was conducted using the following terms: "intense training," "physical activity," or "exercise" combined with "hormone," "endocrine," and "girls," "women," or "elite female athletes." All articles reporting on the endocrine changes related to intense training and their potential implications for growth, menstrual cycles, and bone mass acquisition were considered. RESULTS AND CONCLUSION Young female athletes present a high prevalence of menstrual disorders, including delayed menarche, oligomenorrhea, and amenorrhea, characterized by a high degree of variability according to the type of sport. Exercise-related reproductive dysfunction may have consequences for growth velocity and peak bone mass acquisition. Recent findings highlight the endocrine role of adipose tissue and energy balance in the regulation of homeostasis and reproductive function. A better understanding of the mechanisms whereby intense training affects the endocrine system may orient research to develop innovative strategies (ie, based on nutritional or pharmacological approaches and individualized modalities of training and competition) to improve the medical care of these adolescents and protect their reproductive function.
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Affiliation(s)
- Laurent Maïmoun
- Service de Médecine Nucléaire (L.M.), Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire (CHRU) de Montpellier and Université Montpellier 1 (UM1), 34295 Montpellier, France; Département d'Hormonologie (L.M., C.S.), Hôpital Lapeyronie, CHRU Montpellier, 34295 Montpellier, France; Physiologie et Médecine Expérimentale du Cœur et des Muscles (L.M.), INSERM Unité 1046, Université Montpellier 1 (UM1) and Université Montpellier 2 (UM2), 34295 Montpellier, France; Division of Reproductive Endocrinology (N.A.G.), Department of Obstetrics and Gynecology, University of Patras Medical School, University Hospital, Patras 265 04, Greece; and Unité d'Endocrinologie et Gynécologie Pédiatrique (C.S.), Département de Pédiatrie, Hôpital Arnaud de Villeneuve, CHRU Montpellier et UM1, 34295 Montpellier, France
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26
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Abstract
Pubertal maturation plays a fundamental role in bone acquisition. In retrospective epidemiological surveys in pre- and postmenopausal women, relatively later menarcheal age was associated with low bone mineral mass and increased risk of osteoporotic fracture. This association was usually ascribed to shorter time exposure to estrogen from the onset of pubertal maturation to peak bone mass attainment. Recent prospective studies in healthy children and adolescents do not corroborate the limited estrogen exposure hypothesis. In prepubertal girls who will experience later menarche, a reduced bone mineral density was observed before the onset of pubertal maturation, with no further accumulated deficit until peak bone mass attainment. In young adulthood, later menarche is associated with impaired microstructural bone components and reduced mechanical resistance. This intrinsic bone deficit can explain the fact that later menarche increases fracture risk during childhood and adolescence. In healthy individuals, both pubertal timing and bone development share several similar characteristics including wide physiological variability and strong effect of heritable factors but moderate influence of environmental determinants such as nutrition and physical activity. Several conditions modify pubertal timing and bone acquisition, a certain number of them acting in concert on both traits. Taken together, these facts should prompt the search for common genetic regulators of pubertal timing and bone acquisition. It should also open epigenetic investigation avenues to pinpoint which environmental exposure in fetal and infancy life, such as vitamin D, calcium, and/or protein supplies, influences both pubertal timing and bone acquisition.
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Affiliation(s)
- Jean-Philippe Bonjour
- Division of Bone Diseases, University Hospitals and Faculty of Medicine, CH-1211 Geneva, Switzerland
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27
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Laakso S, Valta H, Verkasalo M, Toiviainen-Salo S, Mäkitie O. Compromised peak bone mass in patients with inflammatory bowel disease--a prospective study. J Pediatr 2014; 164:1436-43.e1. [PMID: 24650398 DOI: 10.1016/j.jpeds.2014.01.073] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/17/2013] [Accepted: 01/29/2014] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To evaluate peak bone mass attainment in children and adolescents with inflammatory bowel disease and to identify risk factors for suboptimal bone mass attainment. STUDY DESIGN We conducted a prospective follow-up study of 47 children and adolescents (24 males) with ulcerative colitis (n = 30) or Crohn's disease (n = 17). They were assessed for lumbar spine areal bone mineral density (aBMD) and for height-adjusted whole body less head bone mineral content (BMC); the values were corrected for bone age. RESULTS Altogether, 73% of the patients had completed pubertal development after the median follow-up time of over 5 years. Despite clinical inactivity of the disease in 70% of the patients at the follow-up visit, BMD or BMC Z-scores improved in none of the measurement sites. Lumbar spine aBMD Z-scores (mean difference [95% CI], -0.47 [-0.92 to -0.03]; P = .04) and whole body less head BMC height- and bone age-adjusted Z-scores (-0.52 [-1.01 to -0.02]; P = .04) decreased in patients who were pubertal at baseline and completed their pubertal development during the follow-up. Postpubertal patients had lower aBMD and BMC Z-scores in comparison with prepubertal and pubertal patients. Low lumbar spine aBMD (Z-score < -1.0) was associated with completed pubertal development, underweight, and greater lifetime cumulative weight-adjusted prednisolone dose. Vertebral fractures were detected in 3 patients (6%). One-fourth of the patients had insufficient serum 25-hydroxyvitamin D concentrations (<50 nmol/L). CONCLUSIONS The longitudinal follow-up over the pubertal years shows that inflammatory bowel disease poses a significant threat for bone health. The suboptimal peak bone mass attainment may have life-long consequences.
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Affiliation(s)
- Saila Laakso
- Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland.
| | - Helena Valta
- Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
| | - Matti Verkasalo
- Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
| | - Sanna Toiviainen-Salo
- Helsinki Medical Imaging Center, Department of Pediatric Radiology, Helsinki University Central Hospital, Helsinki, Finland
| | - Outi Mäkitie
- Children's Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland; Folkhälsan Research Center, Biomedicum Helsinki, Helsinki, Finland; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
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28
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Kontulainen SA, Kawalilak CE, Johnston JD, Bailey DA. Prevention of Osteoporosis and Bone Fragility. Am J Lifestyle Med 2013. [DOI: 10.1177/1559827613487664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The importance of optimal bone growth in childhood and adolescence has been recognized as one of the key strategies in osteoporotic fracture prevention. Low birth size, poor childhood growth, and low peak bone mass at the cessation of growth have been linked to the later risk of osteoporosis and hip fracture. Formerly, the focus was merely on maximizing bone mineral accrual because a high peak bone mineral mass may prevent attainment of a critical “fracture threshold” associated with age-related bone loss and osteoporosis. More recently, the focus has shifted away from bone mineral accrual—as measured by dual-energy X-ray absorptiometry (DXA)—toward the optimization of bone strength. This is partly because of the advances in bone imaging that have enabled estimation of bone strength beyond bone mass. In this review, we briefly describe long-bone growth and structural development and our abilities to assess bone properties by medical imaging tools. In addition, we summarize the evidence of factors contributing to skeletal growth, bone fragility, and the development of strong, healthy bones.
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Affiliation(s)
- Saija Annukka Kontulainen
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada (SAK, CEK, DAB)
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada (JDJ)
- School of Human Movement Studies, University of Queensland, Brisbane, Australia (DAB)
| | - Chantal Elizabeth Kawalilak
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada (SAK, CEK, DAB)
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada (JDJ)
- School of Human Movement Studies, University of Queensland, Brisbane, Australia (DAB)
| | - James Duncan Johnston
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada (SAK, CEK, DAB)
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada (JDJ)
- School of Human Movement Studies, University of Queensland, Brisbane, Australia (DAB)
| | - Donald Alexander Bailey
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada (SAK, CEK, DAB)
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada (JDJ)
- School of Human Movement Studies, University of Queensland, Brisbane, Australia (DAB)
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Mallinson RJ, Williams NI, Hill BR, De Souza MJ. Body composition and reproductive function exert unique influences on indices of bone health in exercising women. Bone 2013; 56:91-100. [PMID: 23702387 DOI: 10.1016/j.bone.2013.05.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 03/18/2013] [Accepted: 05/09/2013] [Indexed: 11/22/2022]
Abstract
Reproductive function, metabolic hormones, and lean mass have been observed to influence bone metabolism and bone mass. It is unclear, however, if reproductive, metabolic and body composition factors play unique roles in the clinical measures of areal bone mineral density (aBMD) and bone geometry in exercising women. This study compares lumbar spine bone mineral apparent density (BMAD) and estimates of femoral neck cross-sectional moment of inertia (CSMI) and cross-sectional area (CSA) between exercising ovulatory (Ov) and amenorrheic (Amen) women. It also explores the respective roles of reproductive function, metabolic status, and body composition on aBMD, lumbar spine BMAD and femoral neck CSMI and CSA, which are surrogate measures of bone strength. Among exercising women aged 18-30 years, body composition, aBMD, and estimates of femoral neck CSMI and CSA were assessed by dual-energy x-ray absorptiometry. Lumbar spine BMAD was calculated from bone mineral content and area. Estrone-1-glucuronide (E1G) and pregnanediol glucuronide were measured in daily urine samples collected for one cycle or monitoring period. Fasting blood samples were collected for measurement of leptin and total triiodothyronine. Ov (n = 37) and Amen (n = 45) women aged 22.3 ± 0.5 years did not differ in body mass, body mass index, and lean mass; however, Ov women had significantly higher percent body fat than Amen women. Lumbar spine aBMD and BMAD were significantly lower in Amen women compared to Ov women (p < 0.001); however, femoral neck CSA and CSMI were not different between groups. E1G cycle mean and age of menarche were the strongest predictors of lumbar spine aBMD and BMAD, together explaining 25.5% and 22.7% of the variance, respectively. Lean mass was the strongest predictor of total hip and femoral neck aBMD as well as femoral neck CSMI and CSA, explaining 8.5-34.8% of the variance. Upon consideration of several potential osteogenic stimuli, reproductive function appears to play a key role in bone mass at a site composed of primarily trabecular bone. However, lean mass is one of the most influential predictors of bone mass and bone geometry at weight-bearing sites, such as the hip.
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Affiliation(s)
- Rebecca J Mallinson
- Penn State University, Department of Kinesiology, Women's Health and Exercise Laboratory, Noll Laboratory, University Park, PA 16802, USA.
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Maïmoun L, Coste O, Philibert P, Briot K, Mura T, Galtier F, Mariano-Goulart D, Paris F, Sultan C. Peripubertal female athletes in high-impact sports show improved bone mass acquisition and bone geometry. Metabolism 2013; 62:1088-98. [PMID: 23490587 DOI: 10.1016/j.metabol.2012.11.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 11/20/2012] [Accepted: 11/29/2012] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Intensive physical training may have a sport-dependent effect on bone mass acquisition. This cross-sectional study evaluated bone mass acquisition in girls practicing sports that put different mechanical loads on bone. MATERIALS/METHODS Eighty girls from 10.7 to 18.0 years old (mean 13.83 ± 1.97) were recruited: 20 artistic gymnasts (AG; high-impact activity), 20 rhythmic gymnasts (RG; medium-impact activity), 20 swimmers (SW, no-impact activity), and 20 age-matched controls (CON; leisure physical activity <3h/wk). Areal bone mineral density (aBMD) was determined using DEXA. Hip structural analysis applied at the femur evaluated cross-sectional area (CSA, cm(2)), section modulus (Z, cm(3)), and buckling ratio. Bone turnover markers and OPG/RANKL levels were analyzed. RESULTS AG had higher aBMD than SW and CON at all bone sites and higher values than RG in the lumbar spine and radius. RG had higher aBMD than SW and CON only in the femoral region. CSA and mean cortical thickness were significantly higher and the buckling ratio was significantly lower in both gymnast groups compared with SW and CON. In RG only, endocortical diameter and width were reduced, while Z was only increased in AG compared with SW and CON. Reduced bone remodeling was observed in RG compared with AG only when groups were subdivided according to menarcheal status. All groups showed similar OPG concentrations, while RANKL concentrations increased with age and were decreased in SW. CONCLUSION High-impact activity clearly had a favorable effect on aBMD and bone geometry during the growth period, although the bone health benefits seem to be more marked after menarche.
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Affiliation(s)
- Laurent Maïmoun
- Département d'Hormonologie, Hôpital Lapeyronie, CHU Montpellier, 191 avenue Doyen Gaston Giraud, 34295 Montpellier, France.
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Chevalley T, Bonjour JP, van Rietbergen B, Ferrari S, Rizzoli R. Fracture history of healthy premenopausal women is associated with a reduction of cortical microstructural components at the distal radius. Bone 2013; 55:377-83. [PMID: 23659831 DOI: 10.1016/j.bone.2013.04.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 04/04/2013] [Accepted: 04/24/2013] [Indexed: 01/13/2023]
Abstract
OBJECTIVES The objective of this study is to determine in healthy premenopausal women with a history of fracture which bone structural components of the distal radius are the most closely associated with a risk of fracture. METHODS AND PARTICIPANTS The method was as follows: measurement of radial areal bone mineral density (aBMD) by DXA, microstructural components by high-resolution quantitative peripheral computerized tomography (HR-pQCT) and strength variables by micro Finite Element Analysis (μFEA) in 196 healthy premenopausal women aged 45.9 ± 3.7 (± SD) years with (FX, n = 96) and without (NO-FX, n = 100) a history of fracture. We evaluated differences in T-scores between FX and NO-FX and risk of fracture by Odds ratios (OR with 95% confidence intervals, CI) per one SD decrease, using logistic regression analysis after adjustment for age, height, weight, menarcheal age, calcium and protein intakes, and physical activity. RESULTS In the whole group the mean radial metaphysis aBMD T-score was not significantly different from zero. In the FX as compared to the NO-FX group, the differences in T-scores were as follows: for radial metaphysis: aBMD, -0.24 (P = 0.005); for distal radius microstructure components: cortical volumetric BMD, -0.38 (P = 0.0009); cortical thickness, -0.37 (P = 0.0001); cross-sectional area (CSA), +0.24 (P=0.034); and endosteal perimeter, +0.28 (P = 0.032); and for strength estimates: stiffness, -0.15 (P = 0.030); failure load, -0.14 (P = 0.044); and apparent modulus, -0.28 (P = 0.006). T-scores of trabecular volumetric BMD and thickness did not significantly differ between the FX and the NO-FX group. Accordingly, the risk of fracture (OR, 95% CI) for 1 SD decrease in radius bone parameters was as follows: radial metaphysis aBMD: 1.70 (1.18-2.44), P = 0.004; cortical volumetric BMD: 1.86 (1.28-2.71), P = 0.001; and cortical thickness: 2.36 (1.53-3.63), P = 0.0001. The corresponding fracture risk for the strength estimates was as follows: stiffness: 1.66 (1.06-2.61), P = 0.028; failure load: 1.59 (1.02-2.47), P = 0.041; and apparent modulus: 1.76 (1.17-2.64), P = 0.006. CONCLUSIONS In healthy premenopausal women, a history of fracture is associated with reduced T-scores in the distal radius, with the cortical components showing the greatest deficit. A reduction of one SD in cortical thickness is associated with a nearly three-fold increased risk of fracture. This finding strengthens the notion that, in healthy women, a certain degree of bone structural fragility contributes to fractures before the menopause and therefore should be taken into consideration in the individual prevention strategy of postmenopausal osteoporosis.
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Affiliation(s)
- T Chevalley
- Division of Bone Diseases, University Hospitals and Faculty of Medicine, Geneva, Switzerland.
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Maïmoun L, Coste O, Mura T, Philibert P, Galtier F, Mariano-Goulart D, Paris F, Sultan C. Specific bone mass acquisition in elite female athletes. J Clin Endocrinol Metab 2013; 98:2844-53. [PMID: 23666974 DOI: 10.1210/jc.2013-1070] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
CONTEXT Cross-sectional studies have demonstrated that physical activity can improve bone mass acquisition. However, this design is not adequate to describe the specific kinetics of bone mass gain during pubertal development. OBJECTIVE To compare the kinetics of bone mass acquisition in female adolescent athletes of sports that impose different mechanical loads and untrained controls throughout puberty. STUDY PARTICIPANTS A total of 72 girls with ages ranging from 10.8 to 18.0 years were recruited: 24 rhythmic gymnasts (RG, impact activity group), 24 swimmers (SW, no-impact activity), and 24 age-matched controls (CON). MAIN OUTCOME MEASURES Areal bone mineral density (aBMD) was determined using dual-energy x-ray absorptiometry and bone turnover markers were analyzed. All the investigations were performed at baseline and after 1 year. RESULTS At baseline and after 1 year of follow-up, RG presented significantly greater aBMD adjusted for age, fat-free soft tissue, and fat mass compared with CON and SW, only at the femoral region. When aBMD variation throughout the pubertal period was modeled for each group from individual values, the aBMD at the femoral region was significantly higher in RG compared with the other 2 groups from 12.5 to 14 years, and this difference lasted up to 18 years. Moreover, the mean annual aBMD gain tended to be higher in RG compared with SW and CON only at the femoral region and this gain lasted longer in RG. Bone remodeling markers decreased similarly with age in the 3 groups. CONCLUSIONS This study, which was based on linear mixed models for longitudinal data, demonstrated that the osteogenic effect of gymnastics is characterized by greater bone mass gain localized at mechanically loaded bone (ie, the proximal femur) principally around the menarcheal period. Moreover, the bone mass gain lasts longer in gymnasts, which may be explained by the delay in sexual maturation.
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Affiliation(s)
- Laurent Maïmoun
- Département d'Hormonologie, Hôpital Lapeyronie, Centre Hospitalier Régional Universitaire Montpellier et Université Montpellier I, Montpellier, 34295 Montpellier, France
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Puthanakit T, Siberry GK. Bone health in children and adolescents with perinatal HIV infection. J Int AIDS Soc 2013; 16:18575. [PMID: 23782476 PMCID: PMC3687077 DOI: 10.7448/ias.16.1.18575] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/10/2013] [Accepted: 04/16/2013] [Indexed: 01/02/2023] Open
Abstract
The long-term impact on bone health of lifelong HIV infection and prolonged ART in growing and developing children is not yet known. Measures of bone health in youth must be interpreted in the context of expected developmental and physiologic changes in bone mass, size, density and strength that occur from fetal through adult life. Low bone mineral density (BMD) appears to be common in perinatally HIV-infected youth, especially outside of high-income settings, but data are limited and interpretation complicated by the need for better pediatric norms. The potential negative effects of tenofovir on BMD and bone mass accrual are of particular concern as this drug may be used more widely in younger children. Emphasizing good nutrition, calcium and vitamin D sufficiency, weight-bearing exercise and avoidance of alcohol and smoking are effective and available approaches to maintain and improve bone health in all settings. More data are needed to inform therapies and monitoring for HIV-infected youth with proven bone fragility. While very limited data suggest lack of marked increase in fracture risk for youth with perinatal HIV infection, the looming concern for these children is that they may fail to attain their expected peak bone mass in early adulthood which could increase their risk for fractures and osteoporosis later in adulthood.
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Affiliation(s)
- Thanyawee Puthanakit
- Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- HIVNAT, Thai Red Cross AIDS Research Center, Bangkok, Thailand
| | - George K Siberry
- Maternal and Pediatric Infectious Disease (MPID) Branch, Eunice Kennedy Shriver National Institutes of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
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Calmy A, Chevalley T, Delhumeau C, Toutous-Trellu L, Spycher-Elbes R, Ratib O, Zawadynski S, Rizzoli R. Long-term HIV infection and antiretroviral therapy are associated with bone microstructure alterations in premenopausal women. Osteoporos Int 2013; 24:1843-52. [PMID: 23138338 DOI: 10.1007/s00198-012-2189-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 09/04/2012] [Indexed: 12/13/2022]
Abstract
UNLABELLED We evaluated the influence of long-term HIV infection and its treatment on distal tibia and radius microstructure. Premenopausal eumenorrheic HIV-positive women displayed trabecular and cortical microstructure alterations, which could contribute to increased bone fragility in those patients. INTRODUCTION Bone fragility is an emerging issue in HIV-infected patients. Dual-energy X-ray absorptiometry (DXA) quantified areal bone mineral density (BMD) predicts fracture risk, but a significant proportion of fracture risk results from microstructural alterations. METHODS We studied the influence of long-term HIV infection on bone microstructure as evaluated by high-resolution peripheral quantitative computed tomography (HR-pQCT) in 22 HIV-positive (+ve) premenopausal eumenorrheic women and 44 age- and body mass index (BMI)-matched HIV-negative (-ve) controls. All subjects completed questionnaires regarding calcium/protein intakes and physical activity, and underwent DXA and HR-pQCT examinations for BMD and peripheral skeleton microstructure, respectively. A risk factor analysis of tibia trabecular density using linear mixed models was conducted. RESULTS In HIV+ve women on successful antiretroviral therapy (undetectable HIV-RNA, median CD4 cell count, 626), infection duration was 16.5 ± 3.5 (mean ± SD) years; median BMI was 22 (IQR, 21-26) kg/m². More HIV+ve women were smokers (82 versus 50 %, p = 0.013). Compared to controls, HIV+ve women had lower lumbar spine (spine T-score -0.70 vs -0.03, p = 0.014), but similar proximal femur BMD. At distal tibia, HIV+ve women had a 14.1 % lower trabecular density and a 13.2 % reduction in trabecular number compared to HIV-ve women (p = 0.013 and 0.029, respectively). HR-pQCT differences in distal radius were significant for cortical density (-3.0 %; p = 0.029). CONCLUSIONS Compared with HIV-ve subjects, premenopausal HIV+ve treated women had trabecular and cortical bone alterations. Adjusted analysis revealed that HIV status was the only determinant of between group tibia trabecular density differences. The latter could contribute to increased bone fragility in HIV+ve patients.
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Affiliation(s)
- A Calmy
- Division of Infectious Diseases, HIV Unit, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
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Rozental TD, Deschamps LN, Taylor A, Earp B, Zurakowski D, Day CS, Bouxsein ML. Premenopausal women with a distal radial fracture have deteriorated trabecular bone density and morphology compared with controls without a fracture. J Bone Joint Surg Am 2013; 95:633-42. [PMID: 23553299 PMCID: PMC3748976 DOI: 10.2106/jbjs.l.00588] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Measurement of bone mineral density by dual x-ray absorptiometry combined with clinical risk factors is currently the gold standard in diagnosing osteoporosis. Advanced imaging has shown that older patients with fragility fractures have poor bone microarchitecture, often independent of low bone mineral density. We hypothesized that premenopausal women with a fracture of the distal end of the radius have similar bone mineral density but altered bone microarchitecture compared with control subjects without a fracture. METHODS Forty premenopausal women with a recent distal radial fracture were prospectively recruited and matched with eighty control subjects without a fracture. Primary outcome variables included trabecular and cortical microarchitecture at the distal end of the radius and tibia by high-resolution peripheral quantitative computed tomography. Bone mineral density at the wrist, hip, and lumbar spine was also measured by dual x-ray absorptiometry. RESULTS The fracture and control groups did not differ with regard to age, race, or body mass index. Bone mineral density was similar at the femoral neck, lumbar spine, and distal one-third of the radius, but tended to be lower in the fracture group at the hip and ultradistal part of the radius (p = 0.06). Trabecular microarchitecture was deteriorated in the fracture group compared with the control group at both the distal end of the radius and distal end of the tibia. At the distal end of the radius, the fracture group had lower total density and lower trabecular density, number, and thickness compared with the control group (-6% to -14%; p < 0.05 for all). At the distal end of the tibia, total density, trabecular density, trabecular thickness, and cortical thickness were lower in the fracture group than in the control group (-7% to -14%; p < 0.01). Conditional logistic regression showed that trabecular density, thickness, separation, and distribution of trabecular separation remained significantly associated with fracture after adjustment for age and ultradistal radial bone mineral density (adjusted odds ratios [OR]: 2.01 to 2.98; p < 0.05). At the tibia, total density, trabecular density, thickness, cortical area, and cortical thickness remained significantly associated with fracture after adjustment for age and femoral neck bone mineral density (adjusted OR:1.62 to 2.40; p < 0.05). CONCLUSIONS Despite similar bone mineral density values by dual x-ray absorptiometry, premenopausal women with a distal radial fracture have significantly poorer bone microarchitecture at the distal end of the radius and tibia compared with control subjects without a fracture. Early identification of women with poor bone health offers opportunities for interventions aimed at preventing further deterioration and reducing fracture risk.
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Affiliation(s)
- Tamara D. Rozental
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Stoneman 10, Boston, MA 02215
| | - Laura N. Deschamps
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Stoneman 10, Boston, MA 02215
| | - Alexander Taylor
- Department of Medicine, Endocrine Division, Massachusetts General Hospital, 50 Blossom Street, Thier 1051, Boston, MA 02114
| | - Brandon Earp
- Department of Orthopaedic Surgery, Brigham and Women’s Hospital, 75 Francis Street, A Building, Boston, MA 02215
| | - David Zurakowski
- Departments of Anesthesia and Surgery, Boston Children’s Hospital, 300 Longwood Avenue, Boston MA 02115
| | - Charles S. Day
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Stoneman 10, Boston, MA 02215
| | - Mary L. Bouxsein
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Orthopedic Biomechanics Laboratory, RN 115, 330 Brookline Ave, Boston, MA 02215
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Devlin MJ, Grasemann C, Cloutier AM, Louis L, Alm C, Palmert MR, Bouxsein ML. Maternal perinatal diet induces developmental programming of bone architecture. J Endocrinol 2013; 217:69-81. [PMID: 23503967 PMCID: PMC3792707 DOI: 10.1530/joe-12-0403] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Maternal high-fat (HF) diet can alter offspring metabolism via perinatal developmental programming. This study tests the hypothesis that maternal HF diet also induces perinatal programming of offspring bone mass and strength. We compared skeletal acquisition in pups from C57Bl/6J mice fed HF or normal diet from preconception through lactation. Three-week-old male and female pups from HF (HF-N) and normal mothers (N-N) were weaned onto normal diet. Outcomes at 14 and 26 weeks of age included body mass, body composition, whole-body bone mineral content (WBBMC) via peripheral dual-energy X-ray absorptiometry, femoral cortical and trabecular architecture via microcomputed tomography, and glucose tolerance. Female HF-N had normal body mass and glucose tolerance, with lower body fat (%) but higher serum leptin at 14 weeks vs. N-N (P<0.05 for both). WBBMC was 12% lower at 14 weeks and 5% lower at 26 weeks, but trabecular bone volume fraction was 20% higher at 14 weeks in female HF-N vs. N-N (P<0.05 for all). Male HF-N had normal body mass and mildly impaired glucose tolerance, with lower body fat (%) at 14 weeks and lower serum leptin at 26 weeks vs. N-N (P<0.05 for both). Serum insulin was higher at 14 weeks and lower at 26 weeks in HF-N vs. N-N (P<0.05). Trabecular BV/TV was 34% higher and cortical bone area was 6% higher at 14 weeks vs. N-N (P<0.05 for both). These data suggest that maternal HF diet has complex effects on offspring bone, supporting the hypothesis that maternal diet alters postnatal skeletal homeostasis.
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Affiliation(s)
- M J Devlin
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
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Development of Cortical Bone Geometry in the Human Femoral and Tibial Diaphysis. Anat Rec (Hoboken) 2013; 296:774-87. [DOI: 10.1002/ar.22688] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 02/20/2013] [Indexed: 11/07/2022]
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Darelid A, Ohlsson C, Nilsson M, Kindblom JM, Mellström D, Lorentzon M. Catch up in bone acquisition in young adult men with late normal puberty. J Bone Miner Res 2012; 27:2198-207. [PMID: 22653693 DOI: 10.1002/jbmr.1675] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The aim of this study was to investigate the development of bone mineral density (BMD) and bone mineral content (BMC) in relation to peak height velocity (PHV), and to investigate whether late normal puberty was associated with remaining low BMD and BMC in early adulthood in men. In total, 501 men (mean ± SD, 18.9 ± 0.5 years of age at baseline) were included in this 5-year longitudinal study. Areal BMD (aBMD) and BMC, volumetric BMD (vBMD) and cortical bone size were measured using dual-energy X-ray absorptiometry (DXA) and pQCT. Detailed growth and weight charts were used to calculate age at PHV, an objective assessment of pubertal timing. Age at PHV was a strong positive predictor of the increase in aBMD and BMC of the total body (R(2) aBMD 11.7%; BMC 4.3%), radius (R(2) aBMD 23.5%; BMC 22.3%), and lumbar spine (R(2) aBMD 11.9%; BMC 10.5%) between 19 and 24 years (p < 0.001). Subjects were divided into three groups according to age at PHV (early, middle, and late). Men with late puberty gained markedly more in aBMD and BMC at the total body, radius, and lumbar spine, and lost less at the femoral neck (p < 0.001) than men with early puberty. At age 24 years, no significant differences in aBMD or BMC of the lumbar spine, femoral neck, or total body were observed, whereas a deficit of 4.2% in radius aBMD, but not in BMC, was seen for men with late versus early puberty (p < 0.001). pQCT measurements of the radius at follow-up demonstrated no significant differences in bone size, whereas cortical and trabecular vBMD were 0.7% (p < 0.001) and 4.8% (p < 0.05) lower in men with late versus early puberty. In conclusion, our results demonstrate that late puberty in males was associated with a substantial catch up in aBMD and BMC in young adulthood, leaving no deficits of the lumbar spine, femoral neck, or total body at age 24 years.
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Affiliation(s)
- Anna Darelid
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
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Sešelj M, Nahhas RW, Sherwood RJ, Chumlea WC, Towne B, Duren DL. The influence of age at menarche on cross-sectional geometry of bone in young adulthood. Bone 2012; 51:38-45. [PMID: 22513271 PMCID: PMC3584571 DOI: 10.1016/j.bone.2012.03.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 02/24/2012] [Accepted: 03/29/2012] [Indexed: 11/24/2022]
Abstract
Elucidating the somatic and maturational influences on the biomechanical properties of bone in children is crucial for a proper understanding of bone strength and quality in childhood and later life, and has significant potential for predicting adult fracture and osteoporosis risks. The ability of a long bone to resist bending and torsion is primarily a function of its cross-sectional geometric properties, and is negatively impacted by smaller external bone diameter. In pubescent girls, elevated levels of estrogen impede subperiosteal bone growth and increase endosteal bone deposition, resulting in bones averaging a smaller external and internal diameter relative to boys. In addition, given a well-documented secular trend for an earlier menarche, the age at which the rate of subperiosteal bone deposition decreases may also be younger in more recent cohorts of girls. In this study we examined the relationship between pubertal timing and subsequent bone strength in girls. Specifically, we investigated the effects of age at menarche on bone strength indicators (polar moment of inertia and section modulus) determined from cross-sectional geometry of the second metacarpal (MC2) using data derived from serial hand-wrist radiographs of female participants (N=223) in the Fels Longitudinal Study, with repeated measures of MC2 between the ages of 7 and 35 years. Using multivariate regression models, we evaluated the effects of age at menarche on associations between measures of bone strength in early adulthood and the same measures at a prepubertal age. Results indicate that later age at menarche is associated with stronger adult bone (in torsion and bending) when controlling for prepubertal bone strength (R(2) ranged between 0.54 and 0.70, p<0.001). Since cross-sectional properties of bone in childhood may have long lasting implications, they should be considered along with pubertal timing in assessing risk for future fracture and in clinical recommendations.
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Affiliation(s)
- Maja Sešelj
- Division of Morphological Sciences and Biostatistics, Lifespan Health Research Center, Department of Community Health, Wright State University Boonshoft School of Medicine, USA.
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Jackowski SA, Kontulainen SA, Cooper DML, Lanovaz JL, Baxter-Jones ADG. Maturational timing does not predict HSA estimated adult bone geometry at the proximal femur. Bone 2011; 49:1270-8. [PMID: 21924389 DOI: 10.1016/j.bone.2011.08.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/26/2011] [Accepted: 08/27/2011] [Indexed: 10/17/2022]
Abstract
Late maturational timing is documented to be detrimental to bone strength primarily at the distal radius. Studies at the proximal femur have focused on bone mass and the results remain controversial. The purpose of this study was to examine the long term relationship between the onset of maturation and the development of estimated cross sectional area (CSA) and section modulus (Z) at the proximal femur. Two hundred and twenty six individuals (108 males and 118 females) from the Saskatchewan Pediatric Bone Mineral Accrual Study (PBMAS) were classified into maturity groups based on age of attainment of peak height velocity. CSA and Z were serially assessed at the narrow neck (NN), intertrochanter (IT) and proximal shaft (S) sites using hip structural analysis (HSA). Multilevel models were constructed to examine the development of CSA and Z by maturity group. Cross sectional observations indicated that during adolescence, early maturing males had significantly greater CSA and Z than late maturing males at all sites of the proximal femur, while early maturing females had greater Z at the NN and S, and greater CSA at the NN, IT and S sites compared to late maturing females. When age, body size, body composition, physical activity and dietary intake were controlled no significant effects of maturational timing were found at the NN, IT or S regions (p>0.05) in either males or females. In this population of healthy individuals there appears to be no effect of the onset of maturation on estimated CSA and Z development at the proximal femur in both males and females. This may be a result of the proximal femur's loading environment. Future research is required to determine the role of loading on the relationship between maturational timing and bone structure and strength development at the proximal femur.
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Affiliation(s)
- Stefan A Jackowski
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada.
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Maïmoun L, Coste O, Mariano-Goulart D, Galtier F, Mura T, Philibert P, Briot K, Paris F, Sultan C. In peripubertal girls, artistic gymnastics improves areal bone mineral density and femoral bone geometry without affecting serum OPG/RANKL levels. Osteoporos Int 2011; 22:3055-66. [PMID: 21359671 DOI: 10.1007/s00198-011-1541-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 12/20/2010] [Indexed: 11/30/2022]
Abstract
UNLABELLED Peripubertal artistic gymnasts display elevated areal bone mineral density at various bone sites, despite delayed menarche and a high frequency of menstrual disorders, factors that may compromise bone health. The concomitant improvement in femoral bone geometry and strength suggested that this type of physical activity might have favourable clinical impact. INTRODUCTION The purpose of this study is to evaluate the effect of artistic gymnastics (GYM) on areal bone mineral density (aBMD), femoral bone geometry and bone markers and its relationship with the osteoprotegerin (OPG)/rank-ligand (RANKL) system in peripubertal girls. METHODS Forty-six girls (age 10-17.2 years) were recruited for this study: 23 elite athletes in the GYM group (training 12-30 h/week, age at start of training 5.3 years) and 23 age-matched (± 6 months; leisure physical activity ≤ 3 h/week) controls (CON). The aBMD at whole body, total proximal femur, lumbar spine, mid-radius and skull was determined using dual-X-ray absorptiometry. Hip structural analysis (HSA software) was applied at the femur to evaluate cross-sectional area (CSA, cm(2)), cross-sectional moment of inertia (CSMI, cm(4)), and the section modulus (Z, cm(3)) and buckling ratio at neck, intertrochanteric region and shaft. Markers of bone turnover and OPG/RANKL levels were also analysed. RESULTS GYM had higher (5.5-16.4%) non-adjusted aBMD and adjusted aBMD for age, fat-free soft tissue and fat mass at all bone sites, skull excepted and the difference increased with age. In the three femoral regions adjusted for body weight and height, CSA (12.5-18%), CSMI (14-18%), Z (15.5-18.6%) and mean cortical thickness (13.6-21%) were higher in GYM than CON, while the buckling ratio (21-27.1%) was lower. Bone markers decreased with age in both groups and GYM presented higher values than CON only in the postmenarchal period. A similar increase in RANKL with age without OPG variation was observed for both groups. CONCLUSION GYM is associated not only with an increase in aBMD but also an improvement in bone geometry associated with an increase in bone remodelling. These adaptations seem to be independent of the OPG/RANKL system.
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Affiliation(s)
- L Maïmoun
- Service d'Hormonologie, Hôpital Lapeyronie, CHU Montpellier et UMI, Montpellier, France
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Chevalley T, Bonjour JP, Ferrari S, Rizzoli R. Pubertal timing and body mass index gain from birth to maturity in relation with femoral neck BMD and distal tibia microstructure in healthy female subjects. Osteoporos Int 2011; 22:2689-98. [PMID: 21359672 PMCID: PMC3169779 DOI: 10.1007/s00198-011-1531-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 12/17/2010] [Indexed: 11/16/2022]
Abstract
UNLABELLED Childhood body mass index (BMI) gain is linked to hip fracture risk in elderly. In healthy girls, menarcheal age is inversely related to BMI gain during childhood and to femoral neck areal bone mass density (aBMD) and distal tibia structural components at maturity. This study underscores the importance of pubertal timing in age-related fragility fracture risk. INTRODUCTION Recent data point to a relationship between BMI change during childhood and hip fracture risk in later life. We hypothesized that BMI development is linked to variation in pubertal timing as assessed by menarcheal age (MENA) which in turn, is related to peak bone mass (PBM) and hip fracture risk in elderly. METHODS We studied in a 124 healthy female cohort the relationship between MENA and BMI from birth to maturity, and DXA-measured femoral neck (FN) aBMD at 20.4 year. At this age, we also measured bone strength related microstructure components of distal tibia by HR-pQCT. RESULTS At 20.4 ± 0.6 year, FN aBMD (mg/cm(2)), cortical thickness (μm), and trabecular density (mg HA/cm(3)) of distal tibia were inversely related to MENA (P = 0.023, 0.015, and 0.041, respectively) and positively to BMI changes from 1.0 to 12.4 years (P = 0.031, 0.089, 0.016, respectively). Significant inverse (P < 0.022 to <0.001) correlations (R = -0.21 to -0.42) were found between MENA and BMI from 7.9 to 20.4 years, but neither at birth nor at 1.0 year. Linear regression indicated that MENA Z-score was inversely related to BMI changes not only from 1.0 to 12.4 years (R = -0.35, P = 0.001), but also from 1.0 to 8.9 years, (R = -0.24, P = 0.017), i.e., before pubertal maturation. CONCLUSION BMI gain during childhood is associated with pubertal timing, which in turn, is correlated with several bone traits measured at PBM including FN aBMD, cortical thickness, and volumetric trabecular density of distal tibia. These data complement the reported relationship between childhood BMI gain and hip fracture risk in later life.
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Affiliation(s)
- T Chevalley
- Division of Bone Diseases, Department of Rehabilitation and Geriatrics, Geneva University Hospitals and Faculty of Medicine, Rue Micheli-du-Crest 24, CH-1211, Geneva 14, Switzerland.
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Burghardt AJ, Link TM, Majumdar S. High-resolution computed tomography for clinical imaging of bone microarchitecture. Clin Orthop Relat Res 2011; 469:2179-93. [PMID: 21344275 PMCID: PMC3126972 DOI: 10.1007/s11999-010-1766-x] [Citation(s) in RCA: 175] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The role of bone structure, one component of bone quality, has emerged as a contributor to bone strength. The application of high-resolution imaging in evaluating bone structure has evolved from an in vitro technology for small specimens to an emerging clinical research tool for in vivo studies in humans. However, many technical and practical challenges remain to translate these techniques into established clinical outcomes. QUESTIONS/PURPOSES We reviewed use of high-resolution CT for evaluating trabecular microarchitecture and cortical ultrastructure of bone specimens ex vivo, extension of these techniques to in vivo human imaging studies, and recent studies involving application of high-resolution CT to characterize bone structure in the context of skeletal disease. METHODS We performed the literature review using PubMed and Google Scholar. Keywords included CT, MDCT, micro-CT, high-resolution peripheral CT, bone microarchitecture, and bone quality. RESULTS Specimens can be imaged by micro-CT at a resolution starting at 1 μm, but in vivo human imaging is restricted to a voxel size of 82 μm (with actual spatial resolution of ~ 130 μm) due to technical limitations and radiation dose considerations. Presently, this mode is limited to peripheral skeletal regions, such as the wrist and tibia. In contrast, multidetector CT can assess the central skeleton but incurs a higher radiation burden on the subject and provides lower resolution (200-500 μm). CONCLUSIONS CT currently provides quantitative measures of bone structure and may be used for estimating bone strength mathematically. The techniques may provide clinically relevant information by enhancing our understanding of fracture risk and establishing the efficacy of antifracture for osteoporosis and other bone metabolic disorders.
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Affiliation(s)
- Andrew J. Burghardt
- Musculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, Campus Box 2520, QB3 Building, 2nd Floor, Suite 203, 1700 4th Street, San Francisco, CA 94158 USA
| | - Thomas M. Link
- Musculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, Campus Box 2520, QB3 Building, 2nd Floor, Suite 203, 1700 4th Street, San Francisco, CA 94158 USA
| | - Sharmila Majumdar
- Musculoskeletal Quantitative Imaging Research Group, Department of Radiology and Biomedical Imaging, University of California, San Francisco, Campus Box 2520, QB3 Building, 2nd Floor, Suite 203, 1700 4th Street, San Francisco, CA 94158 USA
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Baxter-Jones ADG, Faulkner RA, Forwood MR, Mirwald RL, Bailey DA. Bone mineral accrual from 8 to 30 years of age: an estimation of peak bone mass. J Bone Miner Res 2011; 26:1729-39. [PMID: 21520276 DOI: 10.1002/jbmr.412] [Citation(s) in RCA: 405] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Bone area (BA) and bone mineral content (BMC) were measured from childhood to young adulthood at the total body (TB), lumbar spine (LS), total hip (TH), and femoral neck (FN). BA and BMC values were expressed as a percentage of young-adult values to determine if and when values reached a plateau. Data were aligned on biological ages [years from peak height velocity (PHV)] to control for maturity. TB BA increased significantly from -4 to +4 years from PHV, with TB BMC reaching a plateau, on average, 2 years later at +6 years from PHV (equates to 18 and 20 years of age in girls and boys, respectively). LS BA increased significantly from -4 years from PHV to +3 years from PHV, whereas LS BMC increased until +4 from PHV. FN BA increased between -4 and +1 years from PHV, with FN BMC reaching a plateau, on average, 1 year later at +2 years from PHV. In the circumpubertal years (-2 to +2 years from PHV): 39% of the young-adult BMC was accrued at the TB in both males and females; 43% and 46% was accrued in males and females at the LS and TH, respectively; 33% (males and females) was accrued at the FN. In summary, we provide strong evidence that BA plateaus 1 to 2 years earlier than BMC. Depending on the skeletal site, peak bone mass occurs by the end of the second or early in the third decade of life. The data substantiate the importance of the circumpubertal years for accruing bone mineral.
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Affiliation(s)
- Adam D G Baxter-Jones
- College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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Jackowski SA, Erlandson MC, Mirwald RL, Faulkner RA, Bailey DA, Kontulainen SA, Cooper DML, Baxter-Jones ADG. Effect of maturational timing on bone mineral content accrual from childhood to adulthood: evidence from 15 years of longitudinal data. Bone 2011; 48:1178-85. [PMID: 21338727 DOI: 10.1016/j.bone.2011.02.010] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 02/08/2011] [Accepted: 02/12/2011] [Indexed: 11/20/2022]
Abstract
A higher bone mass may reduce the risk of osteoporosis and fractures. The role of maturational timing for optimizing bone mass is controversial due to the lack of prospective evidence from childhood to adulthood. The purpose of this study was to examine the long term relationship between the onset of maturation and bone mineral content (BMC) development. Two hundred thirty individuals (109 males and 121 females) from the Saskatchewan Pediatric Bone Mineral Accrual Study (PBMAS) were classified into maturity groups based on age of peak height velocity. BMC was serially assessed using dual energy X-ray absorptiometry (DXA). Multilevel models were constructed to examine the independent development of BMC by maturity group. When age, body size, and body composition were controlled early maturing females had on average 3-4%, 62.2 ± 16.8g (p<0.05), more total body BMC than their average maturing peers by 20 years of age. In contrast, late maturing females had 50.7 ± 15.6g less total body BMC. No maturational effects were found at either the lumbar spine or femoral neck (p>0.05) in females. There were no significant differences in BMC development at any site among male maturational groups (p>0.05). In this group of healthy participants, there appears to be a sex-dependent effect on the relationship between maturational timing and total body BMC development. Early, average and late maturing males displayed similar BMC development. Late maturing females had compromised BMC accrual compared to their early and average maturing peers.
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Affiliation(s)
- Stefan A Jackowski
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada.
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Krug R, Burghardt AJ, Majumdar S, Link TM. High-resolution imaging techniques for the assessment of osteoporosis. Radiol Clin North Am 2010; 48:601-21. [PMID: 20609895 DOI: 10.1016/j.rcl.2010.02.015] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The importance of assessing the bone's microarchitectural make-up in addition to its mineral density in the context of osteoporosis has been emphasized in several publications. The high spatial resolution required to resolve the bone's microstructure in a clinically feasible scan time is challenging. At present, the best suited modalities meeting these requirements in vivo are high-resolution peripheral quantitative imaging (HR-pQCT) and magnetic resonance imaging (MRI). Whereas HR-pQCT is limited to peripheral skeleton regions like the wrist and ankle, MRI can also image other sites like the proximal femur but usually with lower spatial resolution. In addition, multidetector computed tomography has been used for high-resolution imaging of trabecular bone structure; however, the radiation dose is a limiting factor. This article provides an overview of the different modalities, technical requirements, and recent developments in this emerging field. Details regarding imaging protocols as well as image postprocessing methods for bone structure quantification are discussed.
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Affiliation(s)
- Roland Krug
- MQIR, Department of Radiology and Biomedical Imaging, University of California-San Francisco, UCSF China Basin Landing, 185 Berry Street, San Francisco, CA 94107, USA.
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Osteoporosis en individuos jóvenes. ACTA ACUST UNITED AC 2010; 6:217-23. [DOI: 10.1016/j.reuma.2009.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 02/02/2009] [Indexed: 01/04/2023]
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Maïmoun L, Coste O, Jaussent A, Mariano-Goulart D, Sultan C, Paris F. Bone mass acquisition in female rhythmic gymnasts during puberty: no direct role for leptin. Clin Endocrinol (Oxf) 2010; 72:604-11. [PMID: 19778294 DOI: 10.1111/j.1365-2265.2009.03718.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Although hypoleptinaemia has been reported in female peripubertal athletes, data are lacking on leptin and bone mass variations in puberty and the effects of leptin on bone mineralization during this period. This study therefore investigated the variations in leptin level and bone mineral density (BMD) in young elite female rhythmic gymnasts (FRG) according to pubertal stage. The effects of leptin, IGF-1 and sex hormones on bone mineral acquisition were also evaluated. PATIENTS AND MEASUREMENTS Plasma leptin levels were analysed in 43 elite FRG (mean age: 13.3 +/- 1.8 years range: 10.6-17.2, body mass index: 17.52 +/- 1.85 kg/m(2), training status: 17.9-23.8 h/week) according to their pubertal stage (Tanner I, n = 7; II, n = 10; III, n = 9; IV, n = 8; V, n = 9). IGF-1, IGFBP-3 and sex hormones were also evaluated. BMD was measured by dual-energy X-ray absorptiometry at various bone sites. RESULTS Plasma leptin increased throughout pubertal growth and the values measured in Tanner stages IV-V were significantly higher than in stages I-II. Gains in BMD were measured throughout puberty at all bone sites, particularly between Tanner stages II and IV. In simple correlation analysis, BMD at all bone sites was positively correlated with plasma leptin, age, bone age, BMI, oestrogen, testosterone, IGF-1 and IGFBP-3. However, multivariate analysis using a linear regression model by block (including bone age, anthropometric data and biological parameters) was then performed to determine the factors independently associated with each BMD site, and only bone age, fat-free soft tissue and BMI remained independent predictors. CONCLUSION In FRG characterized by high training volume and low fat mass, plasma leptin levels increased throughout puberty and were partially related to body composition changes. Despite the simultaneous increases in plasma leptin and BMD during pubertal growth, it was not possible to differentiate the leptin impact on bone independently from anthropometric parameters.
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Affiliation(s)
- Laurent Maïmoun
- Service d'Hormonologie, Hôpital Lapeyronie, Montpellier, France
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Devlin MJ, Stetter CM, Lin HM, Beck TJ, Legro RS, Petit MA, Lieberman DE, Lloyd T. Peripubertal estrogen levels and physical activity affect femur geometry in young adult women. Osteoporos Int 2010; 21:609-17. [PMID: 19575140 PMCID: PMC3230251 DOI: 10.1007/s00198-009-0999-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Accepted: 05/22/2009] [Indexed: 10/20/2022]
Abstract
UNLABELLED The growing skeleton is particularly responsive to exercise around the time of puberty, suggesting a possible role for estrogen in mechanical adaptation in young women. We assessed femoral neck strength index at age 17 in young women with varying adolescent physical activity levels and E2 levels in the first 3 years after menarche. The results indicate that both E2 levels in the first year after menarche and adolescent physical activity are positively associated with bone strength in young adulthood, such that hormone levels may modify human osteogenic responses to exercise. INTRODUCTION It is well established that physical activity contributes to bone strength in young females, but less is known about how peripubertal estrogen affects skeletal responses to exercise. METHODS We used data from 84 participants in the Penn State Young Women's Health Study to test the prediction that young women who (1) had higher E2 levels during the first year after menarche or (2) were more physically active in adolescence will have greater bone strength at the end of adolescence. Subjects were divided into tertiles of physical activity and of E2 level in the first, second, and third postmenarchal years, and femoral strength was calculated from dual-energy X-ray absorptiometry scans of the proximal femur using hip structure analysis. RESULTS At age 17, subjects with the highest E2 levels in year 1 after menarche had 5-14% greater strength in the narrow neck and intertrochanteric region, and the most active subjects had 10-11% greater strength in the femoral narrow neck vs. less active girls. CONCLUSIONS This study suggests that both physical activity and peripubertal estrogen have important influences on young adult bone strength and that hormone levels may be mediators of human osteogenic responses to exercise.
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Affiliation(s)
- M J Devlin
- Department of Anthropology, Harvard University, Cambridge, MA 02138, USA.
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Pinto M, Jepsen KJ, Terranova CJ, Buffenstein R. Lack of sexual dimorphism in femora of the eusocial and hypogonadic naked mole-rat: a novel animal model for the study of delayed puberty on the skeletal system. Bone 2010; 46:112-20. [PMID: 19761882 PMCID: PMC4783644 DOI: 10.1016/j.bone.2009.08.060] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 07/18/2009] [Accepted: 08/12/2009] [Indexed: 12/22/2022]
Abstract
Sex steroid hormones are major determinants of bone morphology and quality and are responsible for sexually dimorphic skeletal traits. Hypogonadism results in suboptimal skeletal development and may lead to an increased risk of bone fracture later in life. The etiology of delayed puberty and/or hypothalamic amenorrhea is poorly understood, and experimental animal models addressing this issue are predominantly based upon short-term experimental induction of hormonal suppression via gonadotropin releasing hormone antagonists (GnRH-a). This acute change in hormone profile does not necessarily emulate the natural progression of hypogonadic bone disorders. We propose a novel animal model with which to explore the effects of chronic hypogonadism on bone quality, the naked mole-rat (NMR; Heterocephalus glaber). This mouse-size rodent may remain reproductively suppressed throughout its life, if it remains as a subordinate within the eusocial mole-rat colony. NMRs live in large colonies with a single dominant breeding female. She, primarily by using aggressive social contact, naturally suppresses the hypothalamic gonadotropic axis of subordinate NMRs and thereby their reproductive expression. However, should an NMR be separated from the dominant breeder, within less than a week reproductive hormones may become elevated and the animal attains breeding status. We questioned if sexual suppression of subordinates impact upon the development and maintenance of the femora and lead to a sexually indistinct monomorphic skeleton. Femora were obtained from male and female NMRs that were either non-breeders (subordinate) or breeders at the time of sacrifice. Diaphyseal cross-sectional morphology, metaphyseal trabecular micro-architecture and tissue mineral density of the femur were measured using microcomputed tomography and diaphyseal mechanical properties were assessed by four-point bending tests to failure. Subordinates were sexually monomorphic and showed no significant differences in body weight or femoral bone structure and quality between males and females. Femora of subordinate females differed significantly from that of breeding animals, whereas in males, the divergent trend among breeders and non-breeders did not reach statistical significance. Subordinate NMRs, naturally suppressed from entering puberty, may prove to be a useful model to tease apart the relationship between bone morphology and hypogonadism and evaluate skeletal development during pubertal maturation.
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Affiliation(s)
- M Pinto
- City College of CUNY, New York, NY, USA
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