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Turcotte AF, O’Connor S, Morin SN, Gibbs JC, Willie BM, Jean S, Gagnon C. Association between obesity and risk of fracture, bone mineral density and bone quality in adults: A systematic review and meta-analysis. PLoS One 2021; 16:e0252487. [PMID: 34101735 PMCID: PMC8186797 DOI: 10.1371/journal.pone.0252487] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 05/15/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The association between obesity and fracture risk may be skeletal site- and sex-specific but results among studies are inconsistent. Whilst several studies reported higher bone mineral density (BMD) in patients with obesity, altered bone quality could be a major determinant of bone fragility in this population. OBJECTIVES This systematic review and meta-analysis aimed to compare, in men, premenopausal women and postmenopausal women with obesity vs. individuals without obesity: 1) the incidence of fractures overall and by site; 2) BMD; and 3) bone quality parameters (circulating bone turnover markers and bone microarchitecture and strength by advanced imaging techniques). DATA SOURCES PubMed (MEDLINE), EMBASE, Cochrane Library and Web of Science were searched from inception of databases until the 13th of January 2021. DATA SYNTHESIS Each outcome was stratified by sex and menopausal status in women. The meta-analysis was performed using a random-effect model with inverse-variance method. The risks of hip and wrist fracture were reduced by 25% (n = 8: RR = 0.75, 95% CI: 0.62, 0.91, P = 0.003, I2 = 95%) and 15% (n = 2 studies: RR = 0.85, 95% CI: 0.81, 0.88), respectively, while ankle fracture risk was increased by 60% (n = 2 studies: RR = 1.60, 95% CI: 1.52, 1.68) in postmenopausal women with obesity compared with those without obesity. In men with obesity, hip fracture risk was decreased by 41% (n = 5 studies: RR = 0.59, 95% CI: 0.44, 0.79). Obesity was associated with increased BMD, better bone microarchitecture and strength, and generally lower or unchanged circulating bone resorption, formation and osteocyte markers. However, heterogeneity among studies was high for most outcomes, and overall quality of evidence was very low to low for all outcomes. CONCLUSIONS This meta-analysis highlights areas for future research including the need for site-specific fracture studies, especially in men and premenopausal women, and studies comparing bone microarchitecture between individuals with and without obesity. SYSTEMATIC REVIEW REGISTRATION NUMBER CRD42020159189.
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Affiliation(s)
- Anne-Frédérique Turcotte
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Center, Québec (QC), Canada
- Obesity, Type 2 Diabetes and Metabolism Unit, Institut universitaire de cardiologie et de pneumologie de Québec–Université Laval Research Center, Québec (QC), Canada
- Department of Medicine, Faculty of Medicine, Laval University, Québec (QC), Canada
| | - Sarah O’Connor
- Institut universitaire de cardiologie et de pneumologie de Québec–Université Laval Research Center, Québec (QC), Canada
- Department of Pharmacy, Faculty of Pharmacy, Laval University, Québec (QC), Canada
- Bureau d’information et études en santé des populations, Institut national de santé publique du Québec, Québec (QC), Canada
| | - Suzanne N. Morin
- Department of Medicine, Faculty of Medicine, McGill University, Montreal (QC), Canada
| | - Jenna C. Gibbs
- Department of Kinesiology and Physical Education, McGill University, Montreal (QC), Canada
| | - Bettina M. Willie
- Department of Pediatric Surgery, Shriners Hospital for Children-Canada, Research Centre, McGill University, Montreal (QC), Canada
| | - Sonia Jean
- Department of Medicine, Faculty of Medicine, Laval University, Québec (QC), Canada
- Bureau d’information et études en santé des populations, Institut national de santé publique du Québec, Québec (QC), Canada
| | - Claudia Gagnon
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Center, Québec (QC), Canada
- Obesity, Type 2 Diabetes and Metabolism Unit, Institut universitaire de cardiologie et de pneumologie de Québec–Université Laval Research Center, Québec (QC), Canada
- Department of Medicine, Faculty of Medicine, Laval University, Québec (QC), Canada
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Shao J, Zhou SS, Qu Y, Liang BB, Yu QH, Wu J. Correlation between bone turnover and metabolic markers with age and gender: a cross-sectional study of hospital information system data. BMC Musculoskelet Disord 2020; 21:603. [PMID: 32912188 PMCID: PMC7487991 DOI: 10.1186/s12891-020-03610-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 08/24/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bone turnover and metabolic indicators are related to age and gender. Age and gender should be matched in subjects in disease control research of bone turnover and metabolism, but strict matching of gender and age increases the difficulty and cost of the research. Therefore, the aim of this study was to solve it is necessary to strictly match age and gender in clinical research in bone metabolism. METHODS A cross-sectional study was conducted from the data were extracted from the HIS of ZhuJiang Hospital. Data relating to seven bone turnover and metabolic indicators from 1036 patients between January 2018 and October 2019 were analyzed. RESULTS P1NP, β-CTx and 25(OH)D were significant different in individuals younger than 20 years of age. ALP was significantly higher in those under 20 years of age and lower at age 20-39 compared with other age groups. The concentrations of Ca and P were different among the groups aged 0-19, 20-39, and 40-59 years of age groups but exhibited no difference above 60 years of age. PTH expression was not dependent on age. P1NP, β-CTx and PTH concentrations were not significantly different between the genders within the same age group. ALP was significantly different between genders within the age range 20-59 years. Ca and 25(OH)D were significantly different between the genders for those older than 60. Serum P was significantly different in the two genders for those aged 40-79. Patients received both alfacalcidol and calcium treatment differently from the others in P1NP, β-CTx, Serum Ca, P and ALP. CONCLUSION P1NP and β-CTx were highly correlated with age. If these two indictors require analysis in a case control study, the patients and controls should be strictly matched by age under 20 years. The demarcation point for ALP was 40 years of age. Ca and P were strongly recommended strict matching according to age in disease research. The difference in P1NP, β-CTx, 25(OH)D and ALP between genders depends on age differences. Medication history should be considered in bone turnover and metabolic clinical research.
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Affiliation(s)
- Ju Shao
- Department of Rheumatology and Clinical Immunology, ZhuJiang Hospital, Southern Medical University, 253 Gongye Ave, Guangzhou, 510282, Guangdong, China
| | - Shao-Song Zhou
- Department of Laboratory, ZhuJiang Hospital, Southern Medical University, Guangzhou, China
| | - Yuan Qu
- Department of Rheumatology and Clinical Immunology, ZhuJiang Hospital, Southern Medical University, 253 Gongye Ave, Guangzhou, 510282, Guangdong, China
| | - Bi-Bo Liang
- Department of Rheumatology and Clinical Immunology, ZhuJiang Hospital, Southern Medical University, 253 Gongye Ave, Guangzhou, 510282, Guangdong, China
| | - Qing-Hong Yu
- Department of Rheumatology and Clinical Immunology, ZhuJiang Hospital, Southern Medical University, 253 Gongye Ave, Guangzhou, 510282, Guangdong, China
| | - Jing Wu
- Department of Rheumatology and Clinical Immunology, ZhuJiang Hospital, Southern Medical University, 253 Gongye Ave, Guangzhou, 510282, Guangdong, China.
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Ansari MGA, Hussain SD, Wani KA, Yakout SM, Al-Disi D, Alokail MS, Reginster JY, Al-Daghri NM. Influence of bone mineral density in circulating adipokines among postmenopausal Arab women. Saudi J Biol Sci 2019; 27:374-379. [PMID: 31889860 PMCID: PMC6933263 DOI: 10.1016/j.sjbs.2019.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/16/2019] [Accepted: 10/20/2019] [Indexed: 12/20/2022] Open
Abstract
Osteoporosis and osteopenia has a significant link with substantial fracture risk. Epidemiological data revealed a protective role of adipose tissue on bone biology in postmenopausal osteoporosis. The current study assessed the associations between select adipokines and bone mineral density (BMD) in postmenopausal women. A total of 175 Saudi postmenopausal women were selected and categorized based on their BMD (normal & low-BMD). Circulating levels of select adipokines (adiponectin, resistin, leptin, and adipsin), insulin, 25(OH)D and RANKl were determined using commercially available assay kits. BMD was measured by dual-energy X-ray absorptiometry (DXA). Overall and among low-BMD subjects, adiponectin consistently showed a significant inverse association with BMD (overall −0.34, p < 0.01; low BMD group −0.34, p < 0.01). In multiple regression, adiponectin (−0.29 ± 0.06, p < 0.00) and resistin (−0.08 ± 0.04, p < 0.05) were inversely significant with BMD overall, but after stratification the significance was lost for resistin (−0.05 ± 0.04, p < 0.224) whereas adiponectin remained (−0.22 ± 0.07, p < 0.02) in low-BMD subjects. Adipsin, leptin and lipocalin-2 showed no significant associations. Findings of the present study revealed that only adiponectin showed a significantly strong inverse association with low BMD, suggesting that insulin sensitivity may influence bone health in Arab postmenopausal women.
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Affiliation(s)
- Mohammed Ghouse Ahmed Ansari
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Syed Danish Hussain
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Kaiser Ahmed Wani
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sobhy M Yakout
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Dara Al-Disi
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Majed S Alokail
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jean-Yves Reginster
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.,Department of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
| | - Nasser M Al-Daghri
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Pal China S, Sanyal S, Chattopadhyay N. Adiponectin signaling and its role in bone metabolism. Cytokine 2018; 112:116-131. [PMID: 29937410 DOI: 10.1016/j.cyto.2018.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/06/2018] [Accepted: 06/09/2018] [Indexed: 12/14/2022]
Abstract
Adiponectin, the most prevalent adipo-cytokine in plasma plays critical metabolic and anti-inflammatory roles is fast emerging as an important molecular target for the treatment of metabolic disorders. Adiponectin action is critical in multiple organs including cardio-vascular system, muscle, liver, adipose tissue, brain and bone. Adiponectin signaling in bone has been a topic of active investigation lately. Human association studies and multiple mice models of gene deletion/modification failed to define a clear cause and effect of adiponectin signaling in bone. The most plausible reason could be the multimeric forms of adiponectin that display differential binding to receptors (adipoR1 and adipoR2) with cell-specific receptor variants in bone. Discovery of small molecule agonist of adipoR1 suggested a salutary role of this receptor in bone metabolism. The downstream signaling of adipoR1 in osteoblasts involves stimulation of oxidative phosphorylation leading to increased differentiation via the likely suppression of wnt inhibitor, sclerostin. On the other hand, the inflammation modulatory effect of adiponectin signaling suppresses the RANKL (receptor activator of nuclear factor κ-B ligand) - to - OPG (osteprotegerin) ratio in osteoblasts leading to the suppression of osteoclastogenic response. This review will discuss the adiponectin signaling and its role in skeletal homeostasis and critically assess whether adipoR1 could be a therapeutic target for the treatment of metabolic bone diseases.
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Affiliation(s)
- Shyamsundar Pal China
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India.
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Haam JH, Kim YS, Kim MJ, Koo HS, Kim HY, Kim HJ, Park KH, Joo NS, Park KC. A cross-sectional study of the association between adipokine levels and bone mineral density according to obesity and menopausal status in Korean women. J Bone Miner Metab 2017; 35:642-648. [PMID: 27873074 DOI: 10.1007/s00774-016-0801-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/31/2016] [Indexed: 01/01/2023]
Abstract
Results regarding the association between adipokine levels and bone mineral density (BMD) have been inconsistent; the effects of sex, menopause, and central obesity remain unknown. We evaluated the association between serum leptin, adiponectin, and high-molecular-weight (HMW) adiponectin levels and BMD according to menopause and central obesity status in Korean women. This cross-sectional study comprised 255 women undergoing examinations at the CHA Bundang Medical Center. Participants were divided according to menopause, and central obesity status. We measured serum adipokine levels and BMD using an enzyme-linked immunosorbent assay and dual-energy X-ray absorptiometry, respectively. After adjusting for age, body mass index, alkaline phosphatase levels and the Homeostasis Model Assessment index, leptin levels were negatively associated with non-vertebral BMD (total hip, β = -0.576, P = 0.006; femoral neck, β = -0.608, P = 0.007) in postmenopausal women without central obesity. Among women without central obesity, HMW adiponectin levels were positively associated with total hip BMD (β = 0.240, P = 0.010) in premenopausal women but negatively associated with BMD (lumbar, β = -0.436, P = 0.012; femoral neck, β = -0.468, P = 0.007) in postmenopausal women. Thus, the association between adipokine levels and BMD varies according to the menopause and central obesity status.
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Affiliation(s)
- Ji-Hee Haam
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Young-Sang Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Moon Jong Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea.
| | - Hyung Suk Koo
- Department of Family Medicine, Dongguk University Bundang Oriental Hospital, Seongnam, 13601, Republic of Korea
| | - Hyung Yuk Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Hye-Jung Kim
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Ki Hyun Park
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Nam-Seok Joo
- Department of Family Practice and Community Health, Ajou University, School of Medicine, Suwon, 16499, Republic of Korea
| | - Kyung-Chae Park
- Department of Family Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
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Hartl A, Sieper J, Syrbe U, Listing J, Hermann KG, Rudwaleit M, Poddubnyy D. Serum levels of leptin and high molecular weight adiponectin are inversely associated with radiographic spinal progression in patients with ankylosing spondylitis: results from the ENRADAS trial. Arthritis Res Ther 2017; 19:140. [PMID: 28619118 PMCID: PMC5471667 DOI: 10.1186/s13075-017-1350-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 05/26/2017] [Indexed: 12/23/2022] Open
Abstract
Background Previous research indicates a role of adipokines in inflammation and osteogenesis. Hence adipokines might also have a pathophysiological role in inflammation and new bone formation in patients with ankylosing spondylitis (AS). The aim of this study was to investigate the role of adipokine serum levels as predictors of radiographic spinal progression in patients with AS. Methods A total of 120 patients with definite AS who completed a 2-year follow up in the ENRADAS trial were included in the current study. Radiographic spinal progression was defined as: (1) worsening of the modified Stoke Ankylosing Spondylitis spine (mSASSS) score by ≥2 points and/or (2) new syndesmophyte formation or progression of existing syndesmophytes after 2 years. Serum levels of adipokines (adiponectin (APN) and its high molecular weight form (HMW-APN), chemerin, leptin, lipocalin-2, omentin, resistin, visfatin) were measured using enzyme-linked immunosorbent assays. Results There was a significant association between radiographic spinal progression and both leptin and HMW-APN. Baseline serum levels of both adipokines were lower in patients who showed radiographic spinal progression after 2 years. This association was especially evident in men; they had generally lower leptin and HMW-APN serum levels as compared to women. The inverse association between adipokines and radiographic spinal progression was confirmed in the logistic regression analysis: the odds ratios (OR) for the outcome “no mSASSS progression ≥2 points” were 1.16 (95% CI 1.03 to 1.29) and 1.17 (95% CI 0.99 to 1.38), for leptin and HMW-APN, respectively; for “no syndesmophyte formation/progression” the respective OR were 1.29 (95% CI 1.11 to 1.50) and 1.18 (95% CI 0.98 to 1.42), adjusted for the presence of syndesmophytes at baseline, C-reactive protein at baseline, sex, body mass index (BMI), non-steroidal anti-inflammatory drugs intake score over 2 years, and smoking status at baseline. Conclusion Serum leptin and HMW-APN predict protection from spinal radiographic progression in patients with AS. Women generally have higher leptin and HMW-APN serum levels that might explain why they have less structural damage in the spine as compared to male patients with AS. Trial registration EudraCT: 2007-007637-39. ClinicalTrials.gov, NCT00715091. Registered on 14 July 2008.
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Affiliation(s)
- Agnes Hartl
- Department of Gastroenterology, Infectiology and Rheumatology, Charité Universitätsmedizin Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Joachim Sieper
- Department of Gastroenterology, Infectiology and Rheumatology, Charité Universitätsmedizin Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Uta Syrbe
- Department of Gastroenterology, Infectiology and Rheumatology, Charité Universitätsmedizin Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Joachim Listing
- German Rheumatism Research Centre, Charitéplatz 1, 10117, Berlin, Germany
| | - Kay-Geert Hermann
- Department of Radiology, Charité Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Germany
| | - Martin Rudwaleit
- Klinikum Bielefeld Rosenhöhe, An der Rosenhöhe 27, 33647, Bielefeld, Germany
| | - Denis Poddubnyy
- Department of Gastroenterology, Infectiology and Rheumatology, Charité Universitätsmedizin Berlin, Hindenburgdamm 30, 12203, Berlin, Germany. .,German Rheumatism Research Centre, Charitéplatz 1, 10117, Berlin, Germany.
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Evans AL, Paggiosi MA, Eastell R, Walsh JS. Bone density, microstructure and strength in obese and normal weight men and women in younger and older adulthood. J Bone Miner Res 2015; 30:920-8. [PMID: 25400253 DOI: 10.1002/jbmr.2407] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 11/07/2014] [Accepted: 11/15/2014] [Indexed: 12/14/2022]
Abstract
Obesity is associated with greater areal BMD (aBMD) and is considered protective against hip and vertebral fracture. Despite this, there is a higher prevalence of lower leg and proximal humerus fracture in obesity. We aimed to determine if there are site-specific differences in BMD, bone structure, or bone strength between obese and normal-weight adults. We studied 100 individually-matched pairs of normal (body mass index [BMI] 18.5 to 24.9 kg/m2) and obese (BMI >30 kg/m2) men and women, aged 25 to 40 years or 55 to 75 years. We assessed aBMD at the whole body (WB), hip (TH), and lumbar spine (LS) with dual-energy X-ray absorptiometry (DXA), LS trabecular volumetric BMD (Tb.vBMD) by quantitative computed tomography (QCT), and vBMD and microarchitecture and strength at the distal radius and tibia with high-resolution peripheral QCT (HR-pQCT) and micro-finite element analysis. Serum type 1 procollagen N-terminal peptide (P1NP) and collagen type 1 C-telopeptide (CTX) were measured by automated electrochemiluminescent immunoassay (ECLIA). Obese adults had greater WB, LS, and TH aBMD than normal adults. The effect of obesity on LS and WB aBMD was greater in older than younger adults (p < 0.01). Obese adults had greater vBMD than normal adults at the tibia (p < 0.001 both ages) and radius (p < 0.001 older group), thicker cortices, higher cortical BMD and tissue mineral density, lower cortical porosity, higher trabecular BMD, and higher trabecular number than normal adults. There was no difference in bone size between obese and normal adults. Obese adults had greater estimated failure load at the radius (p < 0.05) and tibia (p < 0.01). Differences in HR-pQCT measurements between obese and normal adults were seen more consistently in the older than the younger group. Bone turnover markers were lower in obese than in normal adults. Greater BMD in obesity is not an artifact of DXA measurement. Obese adults have higher BMD, thicker and denser cortices, and higher trabecular number than normal adults. Greater differences between obese and normal adults in the older group suggest that obesity may protect against age-related bone loss and may increase peak bone mass.
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Affiliation(s)
- Amy L Evans
- Academic Unit of Bone metabolism, University of Sheffield, Sheffield, UK
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Abstract
The skeleton should maintain an adequate volume, vigour and strength to carry out the role for which it is designed: to hold the whole soft tissue mass that shapes the body and to protect the vital organs. To fulfil this task a satisfactory food intake is required and regulators that are released in the feeding and fasting states, among other signals indicate how much soft mass needs to be built up. Those signals include the secretion of adipocytokines which could represent a relevant link between soft mass (adipose tissue) and skeleton. We studied the presence of adiponectin receptors (AdipoR1, AdipoR2) and its direct effects in osteosarcoma cell line Saos-2. The results indicated that adiponectin receptors were present in the osteoblastic cells with a higher expression of AdipoR1. Human recombinant globular adiponectin was able to increase viability levels and decrease cytotoxicity rates in cell cultures. Also, adiponectin significantly inhibited alkaline phosphatase activity in supernatants. Osteoprotegerin mRNA expression was significantly reduced after 72 h treatment. The FOS induction was studied and the results exhibited a significant increase caused by adiponectin. In conclusion, all these observations suggest that adiponectin influences bone metabolism decreasing the levels of bone formation. Regulators of adiponectin or its receptors could be circulating to modulate the activities of this peptide.
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Lubkowska A, Dobek A, Mieszkowski J, Garczynski W, Chlubek D. Adiponectin as a biomarker of osteoporosis in postmenopausal women: controversies. Dis Markers 2014; 2014:975178. [PMID: 24591772 DOI: 10.1155/2014/975178] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 10/22/2013] [Accepted: 10/22/2013] [Indexed: 01/19/2023]
Abstract
The literature reports indicating a link between plasma levels of adiponectin and body fat, bone mineral density, sex hormones, and peri- and postmenopausal changes, draw attention to the possible use of adiponectin as an indicator of osteoporotic changes, suggesting that adiponectin may also modulate bone metabolism. In this study, we attempted to analyze the available in vitro and in vivo results which could verify this hypothesis. Although several studies have shown that adiponectin has an adverse effect on bone mass, mainly by intensifying resorption, this peptide has also been demonstrated to increase the proliferation and differentiation of osteoblasts, inhibit the activity of osteoclasts, and reduce bone resorption. There are still many ambiguities; for example, it can be assumed that concentrations of adiponectin in plasma do not satisfactorily reflect its production by adipose tissue, as well as conflicting in vitro and in vivo results. It seems that the potential benefit in the treatment of patients with osteoporosis associated with the pharmacological regulation of adiponectin is controversial.
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Pepene CE. Serum under-carboxylated osteocalcin levels in women with polycystic ovary syndrome: weight-dependent relationships with endocrine and metabolic traits. J Ovarian Res 2013; 6:4. [PMID: 23339653 PMCID: PMC3557170 DOI: 10.1186/1757-2215-6-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/15/2013] [Indexed: 01/01/2023] Open
Abstract
Background Under-carboxylated osteocalcin (ucOC), the precursor substrate of bone biomarker OC is a potent regulator of energy metabolism by promoting insulin production and adiponectin synthesis and decreasing fat stores. The aim of the present study was to point out the potential role of ucOC in the physiopathology of polycystic ovary syndrome (PCOS), a common disorder defined by the constellation of anovulation, insulinresistance, hyperinsulinemia, obesity and androgen excess. Methods In this prospective case–control investigation, 78 young premenopausal women, i.e. 52 PCOS patients and 26 age- and body mass index (BMI)-matched healthy controls, were successively enrolled. Recruitment of PCOS patients was performed according to Androgen Excess-Polycystic Ovary Syndrome (AE-PCOS) Society 2006 criteria. All study participants were subjected to clinical examination, whole-body composition assessment and measurements of serum ucOC, OC (1-49), glucose and lipids, insulin, total testosterone (TT), estradiol, sex-hormone binding globulin (SHBG), high-sensitivity C-reactive protein (Hs-CRP) and β-CrossLaps. Results BMI-stratified multivariate analysis revealed significantly higher ucOC levels in PCOS vs. controls in lean (p = 0.001) but not overweight and obese study participants (p = 0.456). Notably, a positive correlation between ucOC and TT (p = 0.018), calculated free testosterone (cFT, p = 0.028) and serum insulin (p = 0.036), respectively, was found to be confined to the lean analysis subgroup. Furthermore, in stepwise multiple regression models, β-CrossLaps and cFT were able to predict 46.71% of serum ucOC variability. (1-43/49)OC failed to be significantly associated to any PCOS trait. Conclusions Circulating ucOC concentration is related to key endocrine PCOS characteristics in a weight-dependent manner. Within the bone-pancreas loop, high ucOC may favor insulin release in lean hyperandrogenic women to compensate for impaired insulin sensitivity.
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Affiliation(s)
- Carmen E Pepene
- Endocrinology Chair, 6th Medical Sciences Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, 3-5 Louis Pasteur, Cluj-Napoca, 400349, Romania.
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Abstract
Osteoporosis is a serious social issue nowadays. Both the high morbidity and its common complication osteoporotic fracture load a heavy burden on the whole society. The adipose tissue is the biggest endocrinology organ that has a different function on the bone. The adipocytes are differentiated from the same cell lineage with osteoblast, and they can secrete multiple adipokines with various functions on bone remolding. Recently, several novel adipokines have been identified and investigated thoroughly. In this paper, we would like to highlight the complicated relation between the bone metabolism and the novel adipokines, and it may provide us with a new target for prediction and treatment of osteoporosis.
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Affiliation(s)
- Yuan Liu
- Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
- Geriatric Department, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Cheng-Yuan Song
- Neurology Department, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Shan-Shan Wu
- Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Qiu-Hua Liang
- Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
| | - Ling-Qing Yuan
- Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
- *Ling-Qing Yuan:
| | - Er-Yuan Liao
- Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China
- *Er-Yuan Liao: and
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12
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O'Sullivan EP, Ashley DT, Davenport C, Penugonda L, Kelleher G, Devlin N, Crowley R, O'Shea P, Agha A, Thompson CJ, O'Gorman DJ, Smith D. A comparison of osteoprotegerin with adiponectin and high-sensitivity C-reactive protein (hsCRP) as a marker for insulin resistance. Metabolism 2013; 62:34-8. [PMID: 22841521 DOI: 10.1016/j.metabol.2012.06.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2011] [Revised: 06/09/2012] [Accepted: 06/18/2012] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Insulin resistance (IR) is associated with low adiponectin and elevated high sensitivity C-reactive protein (hsCRP). Osteoprotegerin (OPG) has been shown to be elevated in type 2 diabetes, but whether it reflects underlying IR is unclear. We aimed to compare the ability of serum OPG with adiponectin and hsCRP to act as a marker for IR in individuals with normal and abnormal glucose tolerance. MATERIALS/METHODS 115 men underwent a 75 g oral glucose tolerance test. OPG, hsCRP and adiponectin were measured using ELISA. IR was assessed using the homeostasis model assessment of insulin resistance (HOMA-IR). RESULTS Men with abnormal glucose tolerance (n=38) were older (58.3±11.2 vs 47.3±11.4 years, P<.001), had higher body mass index (BMI) (31.1±2.9 vs 27.9±3.2 kg/m(2), P<.001) and were more insulin resistant (median (I.Q.) HOMA-IR 5.88 (3.38) vs 1.13 (1.14), P<.001) than those with normal glucose tolerance (n=77). After adjustment for age and BMI, OPG (6.28 (2.32) vs 5.16 (1.86) pmol/L, P<.001) and hsCRP (2.07 (5.47) vs 0.78 (1.05) mg/L, P<.001) were higher and adiponectin (3.02±1.17 vs 4.78±2.38 μg/mL, P<.001) was lower in those with AGT. After adjustment for age and BMI, adiponectin (r=-0.317, P<.001) and hsCRP (r=0.318, P<.001), but not OPG (r=0.126, P=.196) correlated with HOMA-IR. On multiple linear regression analysis, adiponectin and hsCRP but not OPG were independent predictors of HOMA-IR. CONCLUSIONS OPG is higher in individuals with abnormal glucose tolerance, but unlike adiponectin and hsCRP, does not correlate with HOMA-IR, suggesting its elevation within this cohort of individuals is due to factors other than insulin resistance.
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Affiliation(s)
- Eoin P O'Sullivan
- Department of Diabetes and Endocrinology, Royal College of Surgeons in Ireland Medical School, Beaumont Hospital, Dublin 9, Ireland
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13
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Tohidi M, Akbarzadeh S, Larijani B, Kalantarhormozi M, Ostovar A, Assadi M, Vahdat K, Farrokhnia M, Sanjdideh Z, Amirinejad R, Nabipour I. Omentin-1, visfatin and adiponectin levels in relation to bone mineral density in Iranian postmenopausal women. Bone 2012; 51:876-81. [PMID: 22971441 DOI: 10.1016/j.bone.2012.08.117] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 07/22/2012] [Accepted: 08/06/2012] [Indexed: 11/30/2022]
Abstract
The bone and fat interface is implicated in the pathogenesis of postmenopausal osteoporosis. The association between circulating omentin-1 levels and bone mineral density (BMD) in postmenopausal women has never been assessed. A total of 382 healthy postmenopausal women were randomly selected. Omentin-1, visfatin, adiponectin, the receptor activator of nuclear factor-κB ligand (RANKL), osteoprotegerin, high sensitivity C-reactive protein, degradation products of C-terminal telopeptides of type I collagen, and osteocalcin were measured by highly specific enzyme-linked immunosorbent assay methods. BMD was determined for the lumbar spine (L2-L4) and the proximal femur using dual-energy X-ray absorptiometry. In multivariable-adjusted linear regression, serum omentin-1 levels were inversely correlated with BMD at the lumbar spine (β=-0.11, p=0.020). In multiple regression analyses, serum visfatin and adiponectin levels were not significantly correlated with BMD at different skeletal sites after controlling for age, body mass index, and bone-related markers. However, the highest quartile of adiponectin compared to the lowest quartile, after adjusting for potential confounders, revealed an inverse association with BMD in the lumbar spine (β=-0.19, p=0.010). In conclusion, circulating omentin-1 levels had an inverse correlation with BMD at the lumbar spine in Iranian postmenopausal women. To further understand the role of omentin-1 in bone and mineral metabolism, large-scale longitudinal studies focusing on BMD and osteoporotic fractures are warranted.
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Affiliation(s)
- Maasumeh Tohidi
- Department of Endocrine and Metabolic Diseases, The Persian Gulf Tropical Medicine Research Centre, Bushehr University of Medical Sciences, 7514763448, Bushehr, Iran
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14
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Johansson H, Odén A, Lerner UH, Jutberger H, Lorentzon M, Barrett-Connor E, Karlsson MK, Ljunggren O, Smith U, McCloskey E, Kanis JA, Ohlsson C, Mellström D. High serum adiponectin predicts incident fractures in elderly men: Osteoporotic fractures in men (MrOS) Sweden. J Bone Miner Res 2012; 27:1390-6. [PMID: 22407876 DOI: 10.1002/jbmr.1591] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Adipocytes and osteoblasts share a common progenitor, and there is, therefore, potential for both autocrine and endocrine effects of adiponectin on skeletal metabolism. The aim of the present study was to determine whether high serum adiponectin was associated with an increased risk of fracture in elderly men. We studied the relationship between serum adiponectin and the risk of fracture in 999 elderly men drawn from the general population and recruited to the Osteoporotic Fractures in Men (MrOS) study in Gothenburg, Sweden. Baseline data included general health questionnaires, lifestyle questionnaires, body mass index (BMI), bone mineral density (BMD), serum adiponectin, osteocalcin, and leptin. Men were followed for up to 7.4 years (average, 5.2 years). Poisson regression was used to investigate the relationship between serum adiponectin, other risk variables and the time-to-event hazard function of fracture. Median levels of serum adiponectin at baseline were 10.4 µg/mL (interquartile range, 7.7-14.3). During follow-up, 150 men sustained one or more fractures. The risk of fracture increased in parallel with increasing serum adiponectin (hazard ratio [HR]/SD, 1.46; 95% confidence interval [CI], 1.23-1.72) and persisted after multivariate-adjusted analysis (HR/SD, 1.30; 95% CI, 1.09-1.55). Serum adiponectin shows graded stepwise association with a significant excess risk of fracture in elderly men that was independent of several other risk factors for fracture. Its measurement holds promise as a risk factor for fracture in men.
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Affiliation(s)
- Helena Johansson
- Centre for Bone and Arthritis Research, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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15
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Sebastián-Ochoa A, Fernández-García D, Reyes-García R, Mezquita-Raya P, Rozas-Moreno P, Alonso-Garcia G, Muñoz-Torres M. Adiponectin and leptin serum levels in osteoporotic postmenopausal women treated with raloxifene or alendronate. Menopause 2012; 19:172-7. [PMID: 21971209 DOI: 10.1097/gme.0b013e31822815c0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Clinical studies evaluating the role of leptin and adiponectin on bone metabolism had shown conflicting results, and data about the effect of anticatabolic drugs on these adipokines are scarce. Our aims were to determine adiponectin and leptin levels in osteoporotic postmenopausal women and their relationship with bone mass and bone turnover and to analyze changes on adiponectin and leptin levels after treatment with raloxifene or alendronate. METHODS We selected 53 women (mean ± SD age, 63 ± 7 y) with postmenopausal osteoporosis divided into two treatment groups: raloxifene (60 mg/d; n = 20) or alendronate (70 mg/wk; n = 33) during a period of 1 year. Bone mineral density by dual-energy x-ray absorptiometry and serum levels of leptin, adiponectin, and bone turnovers markers were determined at baseline and at 1 year after treatment. RESULTS Baseline levels of leptin were correlated to body mass index (r = 0.47; P < 0.01), waist circumference (r = 0.38, P = 0.01), and estradiol (r = 0.4, P = 0.003). Adiponectin was inversely related to bone-specific alkaline phosphatase (r = -0.41, P < 0.01) and serum crosslaps (r = -0.35; P < 0.01). There was no correlation between bone mineral density, leptin, and adiponectin. After 12 months, no changes were observed in leptin and adiponectin in the alendronate group; however, a significant increase in leptin levels (973.5 ± 637.4 pM/mL vs 1,305.7 ± 793.5 pM/mL; P = 0.031) was detected in the raloxifene group, whereas adiponectin levels showed no significant changes (P = 0.46). CONCLUSIONS In postmenopausal women with osteoporosis, raloxifene induces a significant increase in leptin levels without significant changes in adiponectin serum levels. The antiresorptive effect of raloxifene and alendronate is not substantially influenced by changes in leptin or adiponectin levels.
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16
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Tenta R, Kontogianni MD, Yiannakouris N. Association between circulating levels of adiponectin and indices of bone mass and bone metabolism in middle-aged post-menopausal women. J Endocrinol Invest 2012; 35:306-11. [PMID: 21606670 DOI: 10.3275/7744] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Adiponectin, a fat derived cytokine, is a potential independent contributor to bone mineral density (BMD); however, its action on bone metabolism in humans is still unclear. AIM The aim of this study was to investigate the relationship of adiponectin with bone mass indices and bone metabolic markers in middle-aged post-menopausal women without diabetes. SUBJECTS AND METHODS A random sample consisted of 81 post-menopausal women (age range 45-61 yr, osteopenic/osteoporotic no.=43) was studied. Lumbar-spine BMD (BMD(L2-L4)) and total-body bone mineral content (TBBMC) were measured with dual X-ray absorptiometry. Plasma levels of total and high-molecular weight (HMW) adiponectin, osteoprotegerin (OPG), soluble receptor activator of nuclear factor-κB ligand (sRANKL) and IGF-I were determined. RESULTS No association was observed between total or HMW adiponectin and BMD(L2-L4) or TBBMC. On the contrary, adiponectin levels were positively associated with OPG levels (partial r=0.276, p=0.015) and negatively with IGF-I (partial r=-0.438, p<0.001), in multiple regression models after adjustment for potential confounders. HMW adiponectin showed a negative association with IGF-I (partial r=-0.266, p=0.049) in the multiple regression models but not with OPG, TBBMC or BMD(L2-L4). CONCLUSIONS Although we failed to show statistically significant association between circulating adiponectin levels and indices of bone mass in women during the postmenopausal period, we showed significant associations with OPG and IGF-I levels, suggesting an anabolic role of adiponectin, which may contribute in the understanding of the interplay between adipose tissue-derived hormones and bone metabolism.
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Affiliation(s)
- R Tenta
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
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Park JS, Cho MH, Nam JS, Yoo JS, Ahn CW, Cha BS, Kim KR, Lee HC. Effect of pioglitazone on serum concentrations of osteoprotegerin in patients with type 2 diabetes mellitus. Eur J Endocrinol 2011; 164:69-74. [PMID: 20961967 PMCID: PMC3000683 DOI: 10.1530/eje-10-0875] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Osteoprotegerin (OPG) acts as an important regulatory molecule in atherosclerosis. Recent studies report that thiazolidinediones could affect OPG expression. We investigated the relationship between OPG and inflammatory cytokines and the effects of pioglitazone (a PPARγ (PPARG) agonist) versus metformin on serum OPG levels in type 2 diabetic patients. DESIGN AND METHODS Sixty-seven type 2 diabetic patients were included in this study. They were assigned to pioglitazone (15 mg/day, n=34) or metformin (1000 mg/day, n=33) during 24 weeks. Various anthropometric and metabolic parameters, OPG, interleukin 6 (IL6), C-reactive protein (CRP), adiponectin, and homeostasis model assessment of insulin resistance (HOMA-IR), were measured at baseline and at 6 months of treatment. RESULTS Serum OPG levels correlated significantly with fasting plasma glucose (FPG), HbAlc, HOMA-IR, IL6, and CRP, and inversely correlated with adiponectin after adjusting for age (P<0.05). Multiple regression analysis showed that FPG, HbAlc, and adioponectin were independently correlated with OPG level. After 6 months of treatment, the reduction in FPG and HbAlc levels was similar between the two groups. Pioglitazone treatment significantly increased body mass index (P<0.05) and waist circumference (P<0.05) and decreased triglycerides (P<0.05) and HOMA-IR (P<0.01). The adiponectin concentration was increased (P<0.05), and OPG and CRP levels were decreased in the pioglitazone group (P<0.05), but were unchanged in the metformin group. The changes in serum OPG in the pioglitazone group showed significant correlation with changes in FPG, HbAlc, and adiponectin. CONCLUSIONS In type 2 diabetic patients, pioglitazone decreases OPG levels, and this decrease in OPG levels might be associated with the increase in adiponectin.
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Affiliation(s)
- Jong Suk Park
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
- Severance Institute for Vascular and Metabolic ResearchYonsei University College of Medicine, 146-92, Dogok-Dong, Kangnam-KuSeoul, 135-720Republic of Korea
| | - Min Ho Cho
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
| | - Ji Sun Nam
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
| | - Jeong Seon Yoo
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
| | - Chul Woo Ahn
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
- Severance Institute for Vascular and Metabolic ResearchYonsei University College of Medicine, 146-92, Dogok-Dong, Kangnam-KuSeoul, 135-720Republic of Korea
- (Correspondence should be addressed to C W Ahn; )
| | - Bong Soo Cha
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
| | - Kyung Rae Kim
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
| | - Hyun Chul Lee
- Division of Endocrinology, Department of Internal MedicineKangnam Severance HospitalSeoul, 135-720Republic of Korea
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Frost M, Abrahamsen B, Nielsen TL, Frystyk J, Flyvbjerg A, Hagen C, Andersen M, Brixen K. Adiponectin and peak bone mass in men: a cross-sectional, population-based study. Calcif Tissue Int 2010; 87:36-43. [PMID: 20508920 DOI: 10.1007/s00223-010-9376-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 04/05/2010] [Indexed: 10/19/2022]
Abstract
Adiponectin, a protein classically known to be secreted by adipocytes, is also secreted by bone-forming cells. Results of previous studies have been contradictory as to whether serum adiponectin and bone mineral density (BMD) are associated. The aim of this study was to investigate a possible association between serum adiponectin and BMD in young, healthy men at a time of peak bone mass. BMD in the femoral neck, total hip, and lumbar spine were measured in this population-based cross-sectional study of 700 men aged 20-29 years participating in the Odense Androgen Study. Magnetic resonance imaging of femoral cortical thickness and bone marrow size was performed in a subsample of 363 participants. The associations between serum adiponectin and various bone measures were investigated by means of regression analyses with adjustment for potential confounding variables. An inverse association was found between serum adiponectin and total hip BMD and a direct between adiponectin and femoral bone marrow size (r = -0.092; P = 0.036 and r = 0.164; P = 0.003, respectively). Femoral muscle size may, at least in part, explain the association between adiponectin and total hip BMD. Serum adiponectin was inversely associated with total hip BMD in men at the time of peak bone mass, but this association may be explained by factors related to muscle size and function. The observed association between adiponectin and femoral bone marrow size was retained even after adjustment for potential covariates.
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Affiliation(s)
- M Frost
- Department of Endocrinology, Odense University Hospital, 5000, Odense C, Denmark.
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Tapan S, Dogru T, Sonmez A, Kurt I, Erbil MK. Circulating adiponectin levels in post-menopausal women with and without osteoporosis. Clin Biochem 2010; 43:705; author reply 706. [DOI: 10.1016/j.clinbiochem.2010.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Accepted: 01/11/2010] [Indexed: 10/19/2022]
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Sodi R, Durham B, Ranganath L, Fraser W. Circulating adiponectin levels in post-menopausal women with and without osteoporosis. Clin Biochem 2010; 43:706. [DOI: 10.1016/j.clinbiochem.2010.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
OBJECTIVE The purpose of this study was to examine the relationship between fasting serum leptin and adiponectin levels with bone mineral density (BMD) and body composition in pre-menopausal, middle-aged Hispanic and Caucasian women. OBJECTIVE Participants' (68 Hispanic and 36 Caucasian) BMD and bone mineral content were measured by dual-energy X-ray absorptiometry, and body density was measured by hydrodensitometry. Serum leptin was determined by enzyme immunoassay and adiponectin by ELISA. RESULTS Hispanic women had significantly higher leptin, BMD, and fat mass (FM), and lower adiponectin than Caucasian women. There was no significant correlation between leptin and BMD for Hispanic or Caucasian women; adiponectin was inversely correlated with BMD in Caucasian women only (p = 0.01). In both Hispanic and Caucasian women, lean body mass and adiponectin best explained the variance in BMD (r(2) = 0.25, p < 0.001). CONCLUSION These data demonstrate no significant relationship between leptin and BMD of pre-menopausal, middle-aged Hispanic and Caucasian women, and a significant inverse relationship between adiponectin and BMD in Caucasian women. The role of adipocytokines in the regulation of BMD remains inconclusive and may vary across ethnic groups.
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Affiliation(s)
- George A King
- Department of Kinesiology, University of Texas at El Paso, El Paso, Texas 79902, USA.
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