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Stevens CM, Jain SK. Vitamin D/Bone Mineral Density and Triglyceride Paradoxes Seen in African Americans: A Cross-Sectional Study and Review of the Literature. Int J Mol Sci 2024; 25:1305. [PMID: 38279305 PMCID: PMC10816015 DOI: 10.3390/ijms25021305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 01/28/2024] Open
Abstract
Vitamin D is known to have a positive effect on bone health. Despite the greater frequency of vitamin D deficiency in African Americans (AA), they have a higher bone mineral density (BMD) compared to whites, demonstrating a disconnect between BMD and vitamin D levels in AA. Another intriguing relationship seen in AA is the triglyceride (TG) paradox, an unusual phenomenon in which a normal TG status is observed even when patients house conditions known to be characterized by high TG levels, such as Type II diabetes. To the best of our knowledge, no study has examined whether these two paradoxical relationships exist simultaneously in AA subjects with Type II diabetes. In this study, we compared levels of blood markers, including HbA1c, TG, and vitamin D, measured as serum 25-hydroxyvitamin D [25(OH)VD] µM/mL, [25(OH)VD]/TG, calcium, and BMD in AA (n = 56) and white (n = 26) subjects with Type II diabetes to see whether these relationships exist concurrently. We found that AA subjects had significantly lower TG and [25(OH)VD] levels and a significantly higher BMD status compared to white subjects, even when the ages, BMI, duration of diabetes, HbA1c, and calcium levels were similar between the two groups. This demonstrates that these two paradoxical relationships exist simultaneously in Type II diabetic AA subjects. In addition to these findings, we discuss the current hypotheses in the literature that attempt to explain why these two intriguing relationships exist. This review also discusses four novel hypotheses, such as altered circulating levels and the potential role of estrogen and hydrogen sulfide on BMD and HMG-CoA reductase as a possible contributor to the TG paradox in AA subjects. This manuscript demonstrates that there are still many unanswered questions regarding these two paradoxical relationships and further research is needed to determine why they exist and how they can be implemented to improve healthcare.
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Affiliation(s)
- Christopher M Stevens
- Department of Pediatrics, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71103, USA
| | - Sushil K Jain
- Department of Pediatrics, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA 71103, USA
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Wang W, Gu X, Cao Z, Wang X, Lei Y, Xu X, Wang S, Wu T, Bao Z. A potential correlation between adipokines, skeletal muscle function and bone mineral density in middle-aged and elderly individuals. Lipids Health Dis 2023; 22:111. [PMID: 37525169 PMCID: PMC10388529 DOI: 10.1186/s12944-023-01879-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/21/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND Evidence exists of a strong association between inflammation and a decrease in skeletal muscle function and bone mineral density (BMD); however, the specific mechanisms of these associations remain unclear. Adipokines, as key regulators of the inflammatory response, may be implicated in these processes. The objective of this study was to explore the potential correlation between adipokines, skeletal muscle function and BMD in middle-aged and elderly individuals. METHODS A comparative cross-sectional study was carried out at the Huadong Hospital Affiliated with Fudan University (Shanghai, China). A total of 460 middle-aged and elderly individuals were recruited, and 125 were enrolled in the analysis. Their biochemical indices, body composition, skeletal muscle function and BMD were measured. Bioinformatic analysis was also employed to identify potential adipokine targets linked to skeletal muscle function and BMD. To validate these targets, plasma and peripheral blood mononuclear cells (PBMCs) were harvested from these individuals and subjected to western blotting (WB) and enzyme-linked immunosorbent assay (ELISA). RESULTS Individuals in this cross-sectional study were categorized into 2 groups according to their median skeletal muscle mass (SMM) (28.8 kg for males and 20.6 kg for females). Individuals with lower SMM exhibited poorer grip strength (P = 0.017), longer 5-Times-Sit-to-Stand Test (FTSST) duration (P = 0.029), lower total hip BMD (P = 0.043), lower femoral neck BMD (P = 0.011) and higher levels of inflammatory markers in comparison with individuals with higher SMM. Bioinformatics analysis identified LEP, ADIPOQ, RBP4, and DPP4 as potential adipokine targets associated with skeletal muscle function and BMD. In vitro experiments demonstrated that individuals with decreased skeletal muscle function and BMD expressed higher levels of these adipokines. CONCLUSIONS Skeletal muscle function is positively correlated with BMD and negatively correlated with levels of inflammatory markers among middle-aged and elderly individuals. Those with lower skeletal muscle function and BMD tend to have a higher expression of LEP, ADIPOQ, RBP4 and DPP4.
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Affiliation(s)
- Wenhao Wang
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China
| | - Xuchao Gu
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China
| | - Ziyi Cao
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China
- Department of Gastroenterology, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China
| | - Xiaojun Wang
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China
- Department of Gerontology, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China
| | - Yiming Lei
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China
| | - Xiaoli Xu
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China
| | - Shiwen Wang
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China.
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China.
| | - Tao Wu
- Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China.
| | - Zhijun Bao
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China.
- Department of Gerontology, Huadong Hospital Affiliated to Fudan University, No 221 West Yan-An Road, Shanghai, 200040, China.
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Duan W, Zou H, Zang N, Ma D, Yang B, Zhu L. Metformin increases bone marrow adipose tissue by promoting mesenchymal stromal cells apoptosis. Aging (Albany NY) 2023; 15:542-552. [PMID: 36645914 PMCID: PMC9925686 DOI: 10.18632/aging.204486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 10/27/2022] [Indexed: 01/18/2023]
Abstract
Bone marrow adipose tissue (MAT) has the potential to exert both local and systemic effects on metabolic homeostasis. As a first-line drug used to treat type 2 diabetes mellitus, metformin has conflicting effects on MAT and bone marrow mesenchymal stem cell (BM-MSC) differentiation. Through a series of experiments in vivo and in vitro, we found that except improving the glucose and lipid metabolism disorder in ob/ob mice, 200 mg/kg metformin increased MAT in mice tibia, and prompted osteogenic genes (RunX2, OPN, OCN) and lipogenic genes (Ppar-γ, Cebpα, Scd1) expression in mice bone marrow. However, metformin promoted osteogenesis and inhibited lipogenesis of MSC in vitro, which is inconsistent with the results in vivo. Given MAT being considered the "filler" of the space after the apoptosis of bone marrow stroma, the effect of metformin on MSC apoptosis was examined. We discovered that metformin induces MSC apoptosis in vivo and in vitro. Therefore, we speculated that the increased MAT in mice tibia may be attributed to the filling of adipose tissue after apoptosis of bone marrow stromal cells induced by metformin. The increased MAT may be involved in the regulation of metformin on glucose, lipid, and bone metabolism in diabetic mice, providing a new way to understand the metabolic regulation of metformin. While increased MAT-associated insulin resistance and metabolic disorders may account for the poorer clinical benefits in patients with intensive glucose control.
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Affiliation(s)
- Wu Duan
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Huajie Zou
- Department of Endocrinology, The Affiliated Hospital of Qinghai University, Xining 810000, China
| | - Nan Zang
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - Dongxia Ma
- Department of Allergy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bo Yang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lin Zhu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Lee S, Kim JH, Jeon YK, Lee JS, Kim K, Hwang SK, Kim JH, Goh TS, Kim YH. Effect of adipokine and ghrelin levels on BMD and fracture risk: an updated systematic review and meta-analysis. Front Endocrinol (Lausanne) 2023; 14:1044039. [PMID: 37181034 PMCID: PMC10171108 DOI: 10.3389/fendo.2023.1044039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 03/29/2023] [Indexed: 05/16/2023] Open
Abstract
Context Circulating adipokines and ghrelin affect bone remodeling by regulating the activation and differentiation of osteoblasts and osteoclasts. Although the correlation between adipokines, ghrelin, and bone mineral density (BMD) has been studied over the decades, its correlations are still controversial. Accordingly, an updated meta-analysis with new findings is needed. Objective This study aimed to explore the impact of serum adipokine and ghrelin levels on BMD and osteoporotic fractures through a meta-analysis. Data sources Studies published till October 2020 in Medline, Embase, and the Cochrane Library were reviewed. Study selection We included studies that measured at least one serum adipokine level and BMD or fracture risk in healthy individuals. We excluded studies with one or more of the following: patients less than 18 years old, patients with comorbidities, who had undergone metabolic treatment, obese patients, patients with high physical activities, and a study that did not distinguish sex or menopausal status. Data extraction We extracted the data that include the correlation coefficient between adipokines (leptin, adiponectin, and resistin) and ghrelin and BMD, fracture risk by osteoporotic status from eligible studies. Data synthesis A meta-analysis of the pooled correlations between adipokines and BMD was performed, demonstrating that the correlation between leptin and BMD was prominent in postmenopausal women. In most cases, adiponectin levels were inversely correlated with BMD. A meta-analysis was conducted by pooling the mean differences in adipokine levels according to the osteoporotic status. In postmenopausal women, significantly lower leptin (SMD = -0.88) and higher adiponectin (SMD = 0.94) levels were seen in the osteoporosis group than in the control group. By predicting fracture risk, higher leptin levels were associated with lower fracture risk (HR = 0.68), whereas higher adiponectin levels were associated with an increased fracture risk in men (HR = 1.94) and incident vertebral fracture in postmenopausal women (HR = 1.18). Conclusions Serum adipokines levels can utilize to predict osteoporotic status and fracture risk of patients. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021224855, identifier CRD42021224855.
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Affiliation(s)
- Seoyul Lee
- Department of Physiology, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Jeong Hun Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- College of Nursing, Pusan National University, Yangsan, Republic of Korea
| | - Yun Kyung Jeon
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Internal Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Jung Sub Lee
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Orthopaedic Surgery, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Keunyoung Kim
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Nuclear Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Sun-Kyung Hwang
- College of Nursing, Pusan National University, Yangsan, Republic of Korea
| | - Jae Ho Kim
- Department of Physiology, School of Medicine, Pusan National University, Yangsan, Republic of Korea
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Tae Sik Goh
- Biomedical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Orthopaedic Surgery, School of Medicine, Pusan National University, Yangsan, Republic of Korea
- *Correspondence: Yun Hak Kim, ; Tae Sik Goh,
| | - Yun Hak Kim
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
- Department of Anatomy, School of Medicine, Pusan National University, Yangsan, Republic of Korea
- Department of Biomedical Informatics, School of Medicine, Pusan National University, Yangsan, Republic of Korea
- *Correspondence: Yun Hak Kim, ; Tae Sik Goh,
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Jain SK, McLean WE, Stevens CM, Dhawan R. The Positive Association of Plasma Levels of Vitamin C and Inverse Association of VCAM-1 and Total Adiponectin with Bone Mineral Density in Subjects with Diabetes. Nutrients 2022; 14:nu14193893. [PMID: 36235544 PMCID: PMC9570817 DOI: 10.3390/nu14193893] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/07/2022] [Accepted: 09/13/2022] [Indexed: 11/29/2022] Open
Abstract
Context. Population studies have shown a trend in decreasing vitamin C status and increasing prevalence of osteoporosis in patients with diabetes and non-diabetic people. Dietary vitamin C consumption is linked to improvement in bone mineral density (BMD) in epidemiological studies. VCAM-1 and adiponectin are known to activate osteoclasts, which increase bone loss. Aim: This study examined whether there is any association between the circulating level of vitamin C and BMD and whether the beneficial effect of vitamin C on BMD was linked to a simultaneous decrease in circulating levels of adiponectin and VCAM-1 in subjects with diabetes. Methods: Patients with diabetes (T2D, n = 74) and age-matched non-diabetic controls (n = 26) were enrolled in this study. Fasting blood levels of glycemia, adiponectin, VCAM-1, inflammation biomarkers, and vitamin C were determined in both groups. The BMD of the lumbar spine (L1–L4), left femur, and right femur was determined using a DXA scan in subjects with diabetes. Results: Patients with diabetes had lower levels of vitamin C and higher levels of VCAM-1 and inflammatory cytokines. There was a significant positive association between vitamin C blood levels and lumbar spine BMD as well as a significant negative association between total adiponectin and VCAM-1 levels with that of vitamin C and lumbar BMD in patients with diabetes. Total adiponectin and VCAM-1 also showed a negative association with BMD of both the right and left femurs. The inter-relationship among the circulating levels of vitamin C and VCAM-1 and BMD was strong and is a novel finding. Conclusions: This study reports a positive association of circulating vitamin C levels and the BMD and that the beneficial effects of vitamin C on BMD could be linked to a simultaneous lowering in circulating VCAM-1 and total adiponectin levels. Thus, dietary vitamin C consumption has potential to lower inflammation and the risk of osteoporosis in subjects with diabetes.
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Du Y, Liu Y, Zhou Y, Zhang P. Knockdown of CDC20 promotes adipogenesis of bone marrow-derived stem cells by modulating β-catenin. Stem Cell Res Ther 2022; 13:443. [PMID: 36056439 PMCID: PMC9438178 DOI: 10.1186/s13287-022-03062-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 06/04/2022] [Indexed: 11/26/2022] Open
Abstract
Background Bone is a rigid organ that provides physical protection and support to vital organs of the body. Bone loss disorders are commonly associated with increased bone marrow adipose tissue. Bone marrow mesenchymal stromal/stem cells (BMSCs) are multipotent progenitors that can differentiate into osteoblasts, adipocytes, and chondrocytes. Cell division cycle 20 (CDC20) is a co-activator of anaphase promoting complex/cyclosome (APC/C), and is required for ubiquitin ligase activity. Our previous study showed that CDC20 promoted the osteogenic commitment of BMSCs and Cdc20 conditional knockout mice suggested a decline in bone mass. In this study, we found that knockdown of CDC20 promoted adipogenic differentiation of BMSCs by modulating β-catenin, which suggested a link between adipogenesis and osteogenesis. Methods Lentivirus containing a CDC20 shRNA was used for CDC20 knockdown in human BMSCs (hBMSCs). Primary mouse BMSCs (mBMSCs) were isolated from Cdc20f/f and Sp7-Cre;Cdc20f/f mice. Adipogenesis was examined using quantitative real-time reverse transcription PCR (qRT-PCR) and western blotting analysis of adipogenic regulators, Oil Red O staining, and transplantation into nude mice. CDC20 knockout efficiency was determined through immunochemistry, qRT-PCR, and western blotting of bone marrow. Accumulation of adiposity was measured through histology and staining of bone sections. Exploration of the molecular mechanism was determined through western blotting, Oil Red O staining, and qRT-PCR. Results CDC20 expression in hBMSCs was significantly decreased during adipogenic differentiation. CDC20 knockdown enhanced hBMSC adipogenic differentiation in vitro. CDC20-knockdown hBMSCs showed more adipose tissue-like constructs upon hematoxylin and eosin (H&E) and Oil Red O staining. Sp7-Cre;Cdc20f/f mice presented increased adipocytes in their bone marrow compared with the control mice. mBMSCs from Sp7-Cre;Cdc20f/f mice showed upregulated adipogenic differentiation. Knockdown of CDC20 led to decreased β-catenin levels, and a β-catenin pathway activator (lithium chloride) abolished the role of CDC20 in BMSC adipogenic differentiation. Conclusions Our findings showed that CDC20 knockdown enhanced adipogenesis of hBMSC and mBMSCs adipogenesis in vitro and in vivo. CDC20 regulates both adipogenesis and osteogenesis of BMSCs, and might lead to the development of new therapeutic targets for “fatty bone” and osteoporosis. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-03062-0.
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Affiliation(s)
- Yangge Du
- Department of Prosthodontics, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China
| | - Yunsong Liu
- Department of Prosthodontics, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China
| | - Yongsheng Zhou
- Department of Prosthodontics, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China.
| | - Ping Zhang
- Department of Prosthodontics, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China.
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Shu L, Fu Y, Sun H. The association between common serum adipokines levels and postmenopausal osteoporosis: A meta‐analysis. J Cell Mol Med 2022; 26:4333-4342. [PMID: 35791510 PMCID: PMC9344814 DOI: 10.1111/jcmm.17457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 05/09/2022] [Accepted: 05/12/2022] [Indexed: 11/09/2022] Open
Abstract
The clinical relevance of blood levels of adipokines in individuals with postmenopausal osteoporosis (PMOP) has not been previously clarified. We performed this meta‐analysis to clarify the association between three common adipokines levels and the occurrence of PMOP. PubMed, Embase, Cochrane library, and China National Knowledgement Infrastructure (CNKI) were searched for collecting articles published before 31 October 2021, without language and status restrictions. Fourteen studies met the selection criteria. Meta‐analysis revealed that blood leptin level was remarkably lower (mean difference [MD], −1.94; 95% confidence interval [CI], −3.83 to −0.06; I2 = 96%) and adiponectin level was remarkably higher (MD, 3.48; 95% CI, 2.36 to 4.60; I2 = 90%) in individuals with PMOP than healthy individuals with normal bone mineral density (BMD). However, the statistical difference in leptin level was changed after eliminating the confounding influence of leptin sources and assay approaches. Furthermore, a positive association (r = 0.28) between leptin level and body mass index (BMI) as well as a negative association (r = −0.33) between adiponectin level and BMD was found. Moreover, adiponectin had the highest probability of predicting PMOP (84%). Current evidence suggests that leptin positively affects BMI and adiponectin negatively affects BMD, and adiponectin is the most relevant adipokine negatively associated with PMOP.
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Affiliation(s)
- Linyuan Shu
- Department of Emergency Medicine Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai China
| | - Yimu Fu
- Department of Emergency Medicine Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai China
| | - Hui Sun
- Department of Orthopaedic Surgery Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai China
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Wang W, Huang R, Tang PT, Tu M, Guo XL. Perirenalfat thickness is associated with bone turnover markers and bone mineral density in postmenopausal women with type 2 diabetes mellitus. Front Endocrinol (Lausanne) 2022; 13:990667. [PMID: 36387843 PMCID: PMC9641290 DOI: 10.3389/fendo.2022.990667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 10/06/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Emerging evidence demonstrated that perirenal fat may modulate bone metabolism through several pathological pathways. This study was aimed to assess the associations between perirenal fat thickness (PrFT) and bone turnover markers (BTMs) and bone mineral density (BMD) in postmenopausal women with type 2 diabetes mellitus (T2DM) and further explore the correlation between PrFT and osteoporosis. METHODS In this cross-sectional study, a total of 626 participants with complete data were enrolled in this study. Demographic and anthropometric information was collected. Biochemical parameters and BTMs were determined. PrFT and BMD were measured by computed tomography and dual-energy x-ray absorptiometry, respectively. Correlation analysis and regression models were used to assess the associations between PrFT and BTMs and BMD. The multiple binomial logistic regression model was used to estimate the independent variables of PrFT for osteoporosis. RESULTS Overall, the prevalence of osteoporosis was 38.7%. PrFT was negatively correlated with β-cross-linked C-telopeptide of type I collagen (β-CTX) (r = -0.216,< 0.001), L1-L4 BMD (r = -0.351, < 0.001), and T-score (r = -0.396, < 0.001). PrFT also remained significantly correlated with β-CTX (β = -0.291, P< 0.001), L1-L4 BMD (β = -0.109, P= 0.027), and L1-L4 T-score (β = -0.149, P= 0.001) after adjustment for other confounding factors. Furthermore, PrFT was also independently associated with osteoporosis after adjustment for other confounding factors; the OR (95% CI) was 1.13 (1.04-1.23). PrFT also seems to have a relatively good identifying value for osteoporosis. The area under the curve (AUC) value of PrFT in identifying osteoporosis was 0.766 (95% CI: 0.705-0.826, P < 0.001). The optimal cutoff value of PrFT was 15.2 mm (sensitivity: 72.5%, specificity: 79.8%). CONCLUSIONS PrFT was significantly associated with β-CTX, BMD, and osteoporosis. These findings indicate that perirenal fat may play an important role in bone metabolism. CLINICAL TRIAL REGISTRATION http://www.chictr.org.cn/, identifier (ChiCTR2100052032).
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Affiliation(s)
- Wei Wang
- Department of Endocrinology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
| | - Rong Huang
- Department of Endocrinology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
| | - Ping Tai Tang
- Department of Radiology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
| | - Mei Tu
- Department of Endocrinology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
| | - Xiu Li Guo
- Department of Radiology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
- *Correspondence: Xiu Li Guo,
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Mirhosseini Dehabadi S, Sayadi Shahraki M, Mahmoudieh M, Kalidari B, Melali H, Mousavi M, Ghourban Abadi M, Mirhosseini S. Bone health after bariatric surgery: Consequences, prevention, and treatment. Adv Biomed Res 2022; 11:92. [DOI: 10.4103/abr.abr_182_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 11/05/2022] Open
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Mele C, Caputo M, Ferrero A, Daffara T, Cavigiolo B, Spadaccini D, Nardone A, Prodam F, Aimaretti G, Marzullo P. Bone Response to Weight Loss Following Bariatric Surgery. Front Endocrinol (Lausanne) 2022; 13:921353. [PMID: 35873004 PMCID: PMC9301317 DOI: 10.3389/fendo.2022.921353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022] Open
Abstract
Obesity is a global health challenge that warrants effective treatments to avoid its multiple comorbidities. Bariatric surgery, a cornerstone treatment to control bodyweight excess and relieve the health-related burdens of obesity, can promote accelerated bone loss and affect skeletal strength, particularly after malabsorptive and mixed surgical procedures, and probably after restrictive surgeries. The increase in bone resorption markers occurs early and persist for up to 12 months or longer after bariatric surgery, while bone formation markers increase but to a lesser extent, suggesting a potential uncoupling process between resorption and formation. The skeletal response to bariatric surgery, as investigated by dual-energy X-ray absorptiometry (DXA), has shown significant loss in bone mineral density (BMD) at the hip with less consistent results for the lumbar spine. Supporting DXA studies, analyses by high-resolution peripheral quantitative computed tomography (HR-pQCT) showed lower cortical density and thickness, higher cortical porosity, and lower trabecular density and number for up to 5 years after bariatric surgery. These alterations translate into an increased risk of fall injury, which contributes to increase the fracture risk in patients who have been subjected to bariatric surgery procedures. As bone deterioration continues for years following bariatric surgery, the fracture risk does not seem to be dependent on acute weight loss but, rather, is a chronic condition with an increasing impact over time. Among the post-bariatric surgery mechanisms that have been claimed to act globally on bone health, there is evidence that micro- and macro-nutrient malabsorptive factors, mechanical unloading and changes in molecules partaking in the crosstalk between adipose tissue, bone and muscle may play a determining role. Given these circumstances, it is conceivable that bone health should be adequately investigated in candidates to bariatric surgery through bone-specific work-up and dedicated postsurgical follow-up. Specific protocols of nutrients supplementation, motor activity, structured rehabilitative programs and, when needed, targeted therapeutic strategies should be deemed as an integral part of post-bariatric surgery clinical support.
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Affiliation(s)
- Chiara Mele
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
- *Correspondence: Chiara Mele,
| | - Marina Caputo
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
| | - Alice Ferrero
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
| | - Tommaso Daffara
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
| | - Beatrice Cavigiolo
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
| | - Daniele Spadaccini
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Antonio Nardone
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
- Istituti Clinici Scientifici Maugeri IRCCS, Neurorehabilitation and Spinal Unit of Pavia Institute, Pavia, and Neurorehabilitation of Montescano Institute, Montescano, PV, Italy
| | - Flavia Prodam
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
| | - Gianluca Aimaretti
- Division of Endocrinology, University Hospital “Maggiore della Carità”, Novara, Italy
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Paolo Marzullo
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
- Istituto Auxologico Italiano, IRCCS, Laboratory of Metabolic Research, S. Giuseppe Hospital, Piancavallo, Italy
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Paccou J, Tsourdi E, Meier C, Palermo A, Pepe J, Body JJ, Zillikens MC. Bariatric surgery and skeletal health: A narrative review and position statement for management by the European Calcified Tissue Society (ECTS). Bone 2022; 154:116236. [PMID: 34688942 DOI: 10.1016/j.bone.2021.116236] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/02/2021] [Accepted: 10/16/2021] [Indexed: 12/14/2022]
Abstract
CONTEXT Numerous studies have demonstrated detrimental skeletal consequences following bariatric surgery. METHODS A working group of the European Calcified Tissue Society (ECTS) performed an updated review of existing literature on changes of bone turnover markers (BTMs), bone mineral density (BMD), and fracture risk following bariatric surgery and provided advice on management based on expert opinion. LITERATURE REVIEW Based on observational studies, bariatric surgery is associated with a 21-44% higher risk of all fractures. Fracture risk is time-dependent and increases approximately 3 years after bariatric surgery. The bariatric procedures that have a malabsorptive component (including Roux-en-Y Gastric bypass (RYGB) and biliopancreatic diversion (BPD)) have clearly been associated with the highest risk of fracture. The extent of high-turnover bone loss suggests a severe skeletal insult. This is associated with diminished bone strength and compromised microarchitecture. RYGB was the most performed bariatric procedure worldwide until very recently, when sleeve gastrectomy (SG) became more prominent. There is growing evidence that RYGB is associated with greater reduction in BMD, greater increase in BTMs, and higher risk of fractures compared with SG but RCTs on optimal management are still lacking. EXPERT OPINION In all patients, it is mandatory to treat vitamin D deficiency, to achieve adequate daily calcium and protein intake and to promote physical activity before and following bariatric surgery. In post-menopausal women and men older than 50 years, osteoporosis treatment would be reasonable in the presence of any of the following criteria: i) history of recent fragility fracture after 40 years of age, ii) BMD T-score ≤ -2 at hip or spine, iii) FRAX score with femoral neck BMD exceeding 20% for the 10-year major osteoporotic fracture probability or exceeding 3% for hip fracture. Zoledronate as first choice should be preferred due to intolerance of oral formulations and malabsorption. Zoledronate should be used with caution due to hypocemia risk. It is recommended to ensure adequate 25-OH vitamin D level and calcium supplementation before administering zoledronate. CONCLUSIONS The bariatric procedures that have a malabsorptive component have been associated with the highest turnover bone loss and risk of fracture. There is a knowledge gap on osteoporosis treatment in patients undergoing bariatric surgery. More research is necessary to direct and support guidelines.
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Affiliation(s)
- Julien Paccou
- Univ. Lille, CHU Lille, MABLab ULR 4490, Department of Rheumatology, 59000 Lille, France.
| | - Elena Tsourdi
- Department of Medicine III, Technische Universität Dresden Medical Center, Dresden, Germany; Center for Healthy Aging, Technische Universität Dresden Medical Center, Dresden, Germany
| | - Christian Meier
- Division of Endocrinology, Diabetes and Metabolism, University Hospital and University of Basel, Switzerland
| | - Andrea Palermo
- Unit of Endocrinology and Diabetes, University Campus Bio-Medico, Rome, Italy
| | - Jessica Pepe
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, "Sapienza" University of Rome, Italy
| | - Jean-Jacques Body
- Department of Medicine, CHU Brugmann, Université Libre de Bruxelles, Brussels, Belgium
| | - M Carola Zillikens
- Bone Center Erasmus MC, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
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12
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Shen L, Zhu Y, Xiao J, Qian B, Jiang T, Deng J, Peng G, Yu S, Cao S, Zuo Z, Ma X, Zhong Z, Ren Z, Wang Y, Zhou Z, Liu H, Zong X, Hu Y. Relationships between placental adiponectin, leptin, visfatin and resistin and birthweight in cattle. Reprod Fertil Dev 2021; 32:402-408. [PMID: 31739842 DOI: 10.1071/rd18247] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 07/01/2019] [Indexed: 01/05/2023] Open
Abstract
Adipokines can affect intrauterine development while calf birthweight (CBW) is a breeding standard of calves, which reflects the status of fetal intrauterine development. To explore the correlation between placental adipokines and CBW, 54 healthy Chinese Holstein cows were used in the present study. The cows were grouped according to the CBW of their calves. Placentas were collected immediately after delivery and enzyme-linked immunosorbent assay and reverse transcription-polymerase chain reaction were used to detect the placental expression levels of adiponectin, leptin, visfatin and resistin. Our results show that the mRNA transcription and blood placental content of adiponectin, leptin, visfatin and resistin increased with increasing CBW. The analysis showed that the mRNA transcription levels of placental adiponectin, leptin and resistin were positively correlated with CBW. The mRNA and protein expression levels of adiponectin, leptin and visfatin between the three groups were significantly correlated. Placental resistin mRNA levels correlated positively with adiponectin mRNA, but not leptin or visfatin. The protein expression levels of resistin were significantly positively correlated with those of adiponectin, leptin and visfatin. These results suggest that placental adipokines play important roles in regulating calf intrauterine growth.
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Affiliation(s)
- Liuhong Shen
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Yingkun Zhu
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Jinbang Xiao
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Bolin Qian
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Tao Jiang
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Junliang Deng
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Guangneng Peng
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Shumin Yu
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Suizhong Cao
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China; and Corresponding author.
| | - Zhicai Zuo
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Xiaoping Ma
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Zhijun Zhong
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Zhihua Ren
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Ya Wang
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Ziyao Zhou
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Haifeng Liu
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
| | - Xiaolan Zong
- Sichuan Agricultural University, Chengdu Campus, Academic Affairs Office, Chengdu, Sichuan, 611130, China
| | - Yanchun Hu
- Sichuan Agricultural University, Chengdu Campus, The Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Chengdu, Sichuan, 611130, China
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13
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Tariq S, Tariq S, Khaliq S, Lone KP. Serum resistin levels as predictor of low bone mineral density in postmenopausal women. Health Care Women Int 2020; 42:82-91. [PMID: 32744891 DOI: 10.1080/07399332.2020.1798965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Resistin, a novel adipokine may play an important role in bone metabolism. The study is designed to discover the association of bone mineral density (BMD) with serum resistin levels, anthropometric measures and to elucidate serum resistin as a predictor of BMD in postmenopausal women. Postmenopausal women (n = 160) were recruited and divided into two groups, non-osteoporotic (n = 70) and osteoporotic (n = 90). BMD was evaluated by DXA scan. High serum resistin levels and low weight are independent contributors to low BMD and can influence BMD at lumbar spine, right femoral neck, right hip, left femoral neck, and left hip in postmenopausal women.
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Affiliation(s)
- Sundus Tariq
- Department of Physiology, University Medical & Dental College, Faisalabad, Pakistan.,Physiology and Cell Biology, University of Health Sciences, Lahore, Pakistan
| | - Saba Tariq
- Pharmacology and Therapeutics, University Medical & Dental College, Faisalabad, Pakistan.,Pharmacology and Therapeutics, University of Health Sciences, Lahore, Pakistan
| | - Saba Khaliq
- Physiology and Cell Biology, University of Health Sciences, Lahore, Pakistan
| | - Khalid Parvez Lone
- Physiology and Metabolic disorders, Government College University, Lahore, Pakistan
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14
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The influence of TRAIL, adiponectin and sclerostin alterations on bone loss in BDL-induced cirrhotic rats and the effect of opioid system blockade. Life Sci 2019; 233:116706. [DOI: 10.1016/j.lfs.2019.116706] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/24/2019] [Accepted: 07/28/2019] [Indexed: 12/31/2022]
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15
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Franco-Trepat E, Guillán-Fresco M, Alonso-Pérez A, Jorge-Mora A, Francisco V, Gualillo O, Gómez R. Visfatin Connection: Present and Future in Osteoarthritis and Osteoporosis. J Clin Med 2019; 8:jcm8081178. [PMID: 31394795 PMCID: PMC6723538 DOI: 10.3390/jcm8081178] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 07/29/2019] [Accepted: 08/04/2019] [Indexed: 12/15/2022] Open
Abstract
Musculoskeletal pathologies (MSPs) such as osteoarthritis (OA) and osteoporosis (OP), are a set of disorders that cause severe pain, motion difficulties, and even permanent disability. In developed countries, the current incidence of MSPs reaches about one in four adults and keeps escalating as a consequence of aging and sedentarism. Interestingly, OA and OP have been closely related to similar risk factors, including aging, metabolic alterations, and inflammation. Visfatin, an adipokine with an inflammatory and catabolic profile, has been associated with several OA and OP metabolic risk factors, such as obesity, insulin resistance, and type II diabetes. Furthermore, visfatin has been associated with the innate immune receptor toll-like receptor 4 (TLR4), which plays a key role in cartilage and bone inflammatory and catabolic responses. Moreover, visfatin has been related to several OA and OP pathologic features. The aim of this work is to bring together basic and clinical data regarding the common role of visfatin in these pathologies and their major shared risk factors. Finally, we discuss the pitfalls of visfatin as a potential biomarker and therapeutic target in both pathologies.
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Affiliation(s)
- Eloi Franco-Trepat
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - María Guillán-Fresco
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - Ana Alonso-Pérez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - Alberto Jorge-Mora
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - Vera Francisco
- Research laboratory 9, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - Oreste Gualillo
- Research laboratory 9, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain
| | - Rodolfo Gómez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, SERGAS, 15706 Santiago de Compostela, Spain.
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16
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Lombardi G, Ziemann E, Banfi G. Physical Activity and Bone Health: What Is the Role of Immune System? A Narrative Review of the Third Way. Front Endocrinol (Lausanne) 2019; 10:60. [PMID: 30792697 PMCID: PMC6374307 DOI: 10.3389/fendo.2019.00060] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 01/22/2019] [Indexed: 12/12/2022] Open
Abstract
Bone tissue can be seen as a physiological hub of several stimuli of different origin (e.g., dietary, endocrine, nervous, immune, skeletal muscle traction, biomechanical load). Their integration, at the bone level, results in: (i) changes in mineral and protein composition and microarchitecture and, consequently, in shape and strength; (ii) modulation of calcium and phosphorous release into the bloodstream, (iii) expression and release of hormones and mediators able to communicate the current bone status to the rest of the body. Different stimuli are able to act on either one or, as usual, more levels. Physical activity is the key stimulus for bone metabolism acting in two ways: through the biomechanical load which resolves into a direct stimulation of the segment(s) involved and through an indirect load mediated by muscle traction onto the bone, which is the main physiological stimulus for bone formation, and the endocrine stimulation which causes homeostatic adaptation. The third way, in which physical activity is able to modify bone functions, passes through the immune system. It is known that immune function is modulated by physical activity; however, two recent insights have shed new light on this modulation. The first relies on the discovery of inflammasomes, receptors/sensors of the innate immunity that regulate caspase-1 activation and are, hence, the tissue triggers of inflammation in response to infections and/or stressors. The second relies on the ability of certain tissues, and particularly skeletal muscle and adipose tissue, to synthesize and secrete mediators (namely, myokines and adipokines) able to affect, profoundly, the immune function. Physical activity is known to act on both these mechanisms and, hence, its effects on bone are also mediated by the immune system activation. Indeed, that immune system and bone are tightly connected and inflammation is pivotal in determining the bone metabolic status is well-known. The aim of this narrative review is to give a complete view of the exercise-dependent immune system-mediated effects on bone metabolism and function.
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Affiliation(s)
- Giovanni Lombardi
- Laboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Physiology and Pharmacology, Faculty of Rehabilitation and Kinesiology, Gdansk University of Physical Education and Sport, Gdansk, Poland
- *Correspondence: Giovanni Lombardi
| | - Ewa Ziemann
- Department of Physiology and Pharmacology, Faculty of Rehabilitation and Kinesiology, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Giuseppe Banfi
- Laboratory of Experimental Biochemistry & Molecular Biology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
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17
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Loskutova N, Watts AS, Burns JM. The cause-effect relationship between bone loss and Alzheimer's disease using statistical modeling. Med Hypotheses 2019; 122:92-97. [PMID: 30593432 PMCID: PMC6318806 DOI: 10.1016/j.mehy.2018.10.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/29/2018] [Accepted: 10/21/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Animal studies provide strong evidence that the CNS directly regulates bone remodeling through the actions of the hypothalamus via two distinct pathways, the neural (mediated by leptin) arm and neurohumoral (mediated by neurohormones and growth factors) arm. The impact of AD on central regulatory mechanisms of bone mass is not known. OBJECTIVES To test a model that assesses the relationship between hypothalamic atrophy and bone loss in Alzheimer's disease (AD) and potential mediation through neural (leptin) and neurohumoral (insulin-like growth factor -1, IGF-1) mechanisms. HYPOTHESES AD-related hypothalamic structural change alters neural and neurohumoral regulatory systems of bone remodeling and contributes to bone loss in early AD. DESIGN A secondary data analysis of data obtained in a two-year longitudinal study with path analysis and longitudinal mediation modeling. PARTICIPANTS The data were collected as a part of the University of Kansas Brain Aging Project, a two-year observational study of 71 older adults with early stage AD and 69 non-demented controls. MEASUREMENTS Demographic characteristics and measures of bone density, body composition, and hypothalamic volume, serum levels of leptin, growth hormone, and IGF-1 were collected. RESULTS Hypothalamic atrophy and bone loss were observed in AD group and were associated. Data modeling suggests that bone loss may precede measurable changes in the brain. Leptin increased over two years in AD and the increase in leptin was associated with hypothalamic atrophy. However, changes in leptin or IGF-1 levels did not mediate the relationship between hypothalamic atrophy and bone loss. CONCLUSIONS This study extends previous findings by suggesting that bone loss in AD may be related to neurodegenerative changes (atrophy) in the hypothalamus. Further studies are needed to explore the role of brain atrophy and mediating mechanisms in bone loss. Further exploring temporal relationship between bone loss and AD may have an important diagnostic value.
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Affiliation(s)
- Natalia Loskutova
- American Academy of Family Physicians National Research Network, USA.
| | | | - Jeffrey M Burns
- University of Kansas School of Medicine, Kansas City, KS, USA
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18
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Al-Osami MH, Hameed EK. Serum adiponectin level in osteoporotic postmenopausal women with type 2 diabetes mellitus. Diabetes Metab Syndr 2018; 12:939-942. [PMID: 29853264 DOI: 10.1016/j.dsx.2018.05.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 05/21/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND Diabetes Mellitus (DM) is a major health burden worldwide. Patients with type 2 DM has various complications, including impaired bone health. Adiponectin is novel adipocytokine that could influence bone metabolism. OBJECTIVE We investigated the relationships between serum adiponectin versus lumbar bone mineral density (BMD) in type 2 diabetic osteoporotic postmenopausal women. SUBJECTS AND METHODS This study is a case control study included 90 postmenopausal women; divided as (group A) composed of 30 type 2 diabetic osteoporotic postmenapausal,(group B) composed of 30 non diabetic osteoporotic postmenopausal and 30 apparently healthy non osteoporotic postmenopausal women as a control group. All participants underwent Dual Energy X-ray Absorptiometry to measure the lumbar Bone Mineral Density (BMD).Serum adiponectin was measured by ELISA Kits. SPSS was used to analyze the data. RESULTS Among the studied subjects, group B showed a significant negative correlation between serum adiponectin and lumbar BMD. The diabetic osteoporotic postmenapausal group (group B) showed the lowest concentration of serum adiponectin (μg/mL): 5.14 compared with 11.02 and 8.63 in group A, and the control, respectively. Lumbar BMD of group B was significantly higher than that of group A. CONCLUSIONS Serum adiponectin is associated with lumber BMD in diabetic osteoporotic postmenopausal women. These findings suggest that serum adiponectin was involved in bone metabolism in this group.
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Affiliation(s)
- Mohammed Hadi Al-Osami
- Rheumtology and Medical rehabilitation unit, department of Medicine, College of Medicine-University of Baghdad, Baghdad, Iraq
| | - Ekhlas Khalid Hameed
- The Clinical Biochemistry department, Al-Kindy college of Medicine, University of Baghdad, Baghdad, Iraq.
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19
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Bilha SC, Branisteanu D, Buzduga C, Constantinescu D, Cianga P, Anisie E, Covic A, Ungureanu MC. Body composition and circulating estradiol are the main bone density predictors in healthy young and middle-aged men. J Endocrinol Invest 2018; 41:995-1003. [PMID: 29336002 DOI: 10.1007/s40618-018-0826-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/03/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE Current fracture risk assessment options in men call for improved evaluation strategies. Recent research directed towards non-classic bone mass determinants have often yielded scarce and conflicting results. We aimed at investigating the impact of novel potential bone mass regulators together with classic determinants of bone status in healthy young and middle-aged men. METHODS Anthropometric measurements, all-site bone mineral density (BMD) and body composition parameters assessed by dual-energy X-ray absorptiometry and also serum concentrations of (1) the adipokines leptin and resistin, (2) vitamin D and parathormone (PTH), (3) sex hormone binding globulin (SHBG), total testosterone and estradiol (free testosterone was also calculated) and (4) C-terminal telopeptide of type I collagen (CTx) were obtained from 30 apparently healthy male volunteers aged 20-65 years enrolled in this cross-sectional study. RESULTS Only lean mass (LM) and total estradiol independently predicted BMD in men in multiple regression analysis, together explaining 49% (p ≤ 0.001) of whole-body BMD variance. Hierarchical regression analysis with whole-body BMD as outcome variable demonstrated that the body mass index (BMI) beta coefficient became nonsignificant when LM was added to the model. Adipokines, fat parameters, testosterone (total and free), SHBG, PTH and vitamin D were not independently associated with BMD or CTx. CONCLUSIONS The present study shows that LM and sex hormones-namely estradiol-are the main determinants of bone mass in young and middle-aged men. The effects of BMI upon BMD seem to be largely mediated by LM. Lifestyle interventions should focus on preserving LM in men for improved bone outcomes.
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Affiliation(s)
- S C Bilha
- Department of Endocrinology, "St. Spiridon" Hospital, "Grigore T. Popa" University of Medicine and Pharmacy, No. 1 Independentei Blvd, 700111, Iasi, Romania
| | - D Branisteanu
- Department of Endocrinology, "St. Spiridon" Hospital, "Grigore T. Popa" University of Medicine and Pharmacy, No. 1 Independentei Blvd, 700111, Iasi, Romania.
| | - C Buzduga
- Department of Endocrinology, "St. Spiridon" Hospital, "Grigore T. Popa" University of Medicine and Pharmacy, No. 1 Independentei Blvd, 700111, Iasi, Romania
| | - D Constantinescu
- Immunology Department, "St. Spiridon" Hospital, No.1 Independentei Blvd, 700111, Iasi, Romania
| | - P Cianga
- Immunology Department, "St. Spiridon" Hospital, No.1 Independentei Blvd, 700111, Iasi, Romania
| | - E Anisie
- Immunology Department, "St. Spiridon" Hospital, No.1 Independentei Blvd, 700111, Iasi, Romania
| | - A Covic
- Nephrology Department, Dialysis and Renal Transplant Center, "C.I. Parhon" University Hospital, "Grigore T. Popa" University of Medicine and Pharmacy, No. 50 Carol I Blvd, 700503, Iasi, Romania
| | - M C Ungureanu
- Department of Endocrinology, "St. Spiridon" Hospital, "Grigore T. Popa" University of Medicine and Pharmacy, No. 1 Independentei Blvd, 700111, Iasi, Romania
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20
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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] [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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21
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Association between circulatory levels of adipokines and bone mineral density in postmenopausal women. Menopause 2018; 23:984-92. [PMID: 27433863 DOI: 10.1097/gme.0000000000000655] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Epidemiological evidence indicates that excess fat may be beneficial for bone health, offering protective effects against the onset of postmenopausal osteoporosis. Experimental data suggest that this link might be due to the direct effect of adipokines on bone tissue. Confirmatory evidence of this association, however, remains limited. METHODS The levels of a panel of selected adipokines including interleukin (IL)-6, -8, -1β, adipsin, lipocalin-2/neutrophil gelatinase-associated ipocalin, tumor necrosis factor alpha, monocyte chemoattractant protein-1, plasminogen activator inhibitor-1, hepatocyte growth factor, resistin, leptin, and adiponectin in a group of osteopenic and osteoporotic postmenopausal women were compared with those of unaffected women (n = 127). RESULTS Univariate analysis revealed that leptin and adiponectin were significantly correlated with bone mineral density (BMD). In particular, leptin was positively associated with BMD of the spine (r = 0.22, P < 0.05), femoral neck (r = 0.23, P < 0.05), trochanter (r = 0.20, P < 0.05), and total hip (r = 0.27, P < 0.01), whereas adiponectin was inversely correlated with BMD at the trochanter (r = -0.21, P < 0.05). No correlations were, however, significant after adjusting for body fat variables. Stratification of the sample according to IL-6 levels revealed that adiponectin remained significantly inversely associated with BMD, regardless of fat levels and age (β=-0.29, P < 0.05; r = 0.198) in the subgroup of participants with low levels of IL-6. CONCLUSIONS Our data suggest that circulating adiponectin is inversely associated with markers of bone health in postmenopausal women, and that the interaction is influenced by IL-6 levels.
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Abstract
Osteoporosis and adipose tissue are closely related with many contradictions. Visfatin is an adipokine that is related to osteoporosis and adiposity. This nutrigenomics study examined the interaction between visfatin genotypes and dietary fat intake, with regard to bone mineral density (BMD) among an obese population. In this cross-sectional study, 336 subjects were enrolled; the mean age was 38·25 (sd 11·69) years and the mean BMI was 31·79 (sd 4·77) kg/m2. Laboratory measurements were lipid profile, insulin and fasting blood sugar. Bone density measurements were assessed by dual-energy X-ray absorptiometry. Dietary data were collected through a 3-d 24-h dietary recall. Genotyping for visfatin gene SNP (rs2110385) was performed by the PCR-restriction fragment length polymorphism method. The frequency of GG, GT and TT genotypes were 33·92 48·51 and 17·54 %, respectively, and 86·6 % of participants were women. The results showed that subjects with TT genotypes had significantly higher lumbar BMD, T score and z score (P<0·0001). After categorisation by percentage of fat intake (30 % of total energy content as a cut-off point), no interaction was found, but when categorised by fat types, we found an interaction between visfatin genotypes and dietary PUFA intake in terms of the hip T score and z score (P=0·043, B= -0·08; P=0·04, B= -0·078, respectively). There was a significant relationship between high PUFA intake and lower energy and protein intake. When participants were categorised by median PUFA intake (22·8 g), it was concluded that subjects with GG genotype who had high PUFA-intake diets had lower hip z scores and T scores, unlike the other genotypes.
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Wu J, Xu J, Wang K, Zhu Q, Cai J, Ren J, Zheng S, Ding C. Associations between circulating adipokines and bone mineral density in patients with knee osteoarthritis: a cross-sectional study. BMC Musculoskelet Disord 2018; 19:16. [PMID: 29343264 PMCID: PMC5773016 DOI: 10.1186/s12891-018-1936-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 01/11/2018] [Indexed: 12/29/2022] Open
Abstract
Background Associations between adipokines and bone mineral density (BMD) in knee osteoarthritis (OA) remain indistinct. The aim of this study was to investigate the cross-sectional associations between serum levels of adipokines and BMD in patients with knee OA. Methods This study included 164 patients with symptomatic knee OA from the Anhui Osteoarthritis study. Serum levels of leptin, adiponectin, and resistin were measured using an enzyme-linked immunosorbent assay (ELISA). BMD at total body, spine, hip, and femur were measured by dual-energy X-ray absorptiometry (DXA). Results In multivariable analyses, serum levels of leptin were significantly associated with reduced BMD at total body, hip, total femur, femoral neck, and femoral shaft (β = − 0.019, 95% CI -0.034 to − 0.005; β = − 0.018, 95% CI -0.034 to − 0.003; β = − 0.018, 95% CI -0.034 to − 0.002; β = − 0.016, 95% CI -0.032 to 0.000; β = − 0.026, 95% CI -0.046 to − 0.006; respectively). Serum levels of adiponectin were significantly and negatively associated with BMD at total femur and femoral shaft (β = − 0.007, 95% CI -0.013 to 0.000; β = − 0.011, 95% CI -0.018 to − 0.003; respectively). However, no significant associations were found between serum levels of resistin and BMD at any site measured. Conclusions Serum levels of leptin and adiponectin were significantly and negatively associated with BMD, suggesting potentially detrimental effects of leptin and adiponectin on BMD in knee OA patients.
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Affiliation(s)
- Juan Wu
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China
| | - Jianhua Xu
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China
| | - Kang Wang
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China.,Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, TAS, 7000, Australia
| | - Qicui Zhu
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China
| | - Jingyu Cai
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China
| | - Jiale Ren
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China
| | - Shuang Zheng
- Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, TAS, 7000, Australia
| | - Changhai Ding
- Department of Rheumatology and Immunology, Arthritis Research Institute, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Street, Hefei, China. .,Menzies Institute for Medical Research, University of Tasmania, Private Bag 23, Hobart, TAS, 7000, Australia. .,Institute of Bone & Joint Translational Research, Southern Medical University, Guangzhou, Guangdong, China.
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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] [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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Lombardi G, Barbaro M, Locatelli M, Banfi G. Novel bone metabolism-associated hormones: the importance of the pre-analytical phase for understanding their physiological roles. Endocrine 2017; 56:460-484. [PMID: 28181144 DOI: 10.1007/s12020-017-1239-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 01/17/2017] [Indexed: 02/08/2023]
Abstract
The endocrine function of bone is now a recognized feature of this tissue. Bone-derived hormones that modulate whole-body homeostasis, are being discovered as for the effects on bone of novel and classic hormones produced by other tissues become known. Often, however, the data regarding these last generation bone-derived or bone-targeting hormones do not give about a clear picture of their physiological roles or concentration ranges. A certain degree of uncertainty could stem from differences in the pre-analytical management of biological samples. The pre-analytical phase comprises a series of decisions and actions (i.e., choice of sample matrix, methods of collection, transportation, treatment and storage) preceding analysis. Errors arising in this phase will inevitably be carried over to the analytical phase where they can reduce the measurement accuracy, ultimately, leading discrepant results. While the pre-analytical phase is all important, in routine laboratory medicine, it is often not given due consideration in research and clinical trials. This is particularly true for novel molecules, such as the hormones regulating the endocrine function of bone. In this review we discuss the importance of the pre-analytical variables affecting the measurement of last generation bone-associated hormones and describe their, often debated and rarely clear physiological roles.
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Affiliation(s)
| | - Mosè Barbaro
- Laboratory Medicine Service, San Raffaele Hospital, Milano, Italy
| | | | - Giuseppe Banfi
- IRCCS Istituto Ortopedico Galeazzi, Milano, Italy
- Vita-Salute San Raffaele University, Milano, Italy
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Moradi S, Mirzaei K, Abdurahman AA, Keshavarz SA. Adipokines may mediate the relationship between resting metabolic rates and bone mineral densities in obese women. Osteoporos Int 2017; 28:1619-1629. [PMID: 28116469 DOI: 10.1007/s00198-017-3914-6] [Citation(s) in RCA: 10] [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: 05/12/2016] [Accepted: 01/04/2017] [Indexed: 12/22/2022]
Abstract
UNLABELLED The researchers sought to test the possible link between resting metabolic rate and bone mineral density through four adipokines. Participants with lower resting metabolic rate (RMR) per kilogram demonstrated higher total bone mineral density (BMD), total T-score, and total Z-score. Omentin-1 had a mediatory effect on the relationship between RMR/kg of body weight and bone parameters. INTRODUCTION The previous results of studies regarding the links between obesity and bone health are controversial. For this reason, the researchers sought to test the possible link between RMR and BMD through the following four adipokines: vaspin, retinol binding protein 4, angiopoietin-like 6 (ANGPL6), and omentin-1. METHODS We enrolled 312 obese Iranian women (30 ≤ body mass index <40) in this cross-sectional study. In order to examine the association of serum adipokine levels with RMR and BMD, the participants were grouped based on RMR per body weight. Body composition, dietary intake, bone mineral density, and resting metabolic rate were assessed in all participants. Serum adipokine levels were quantified by the enzyme-linked immunosorbent assay (ELISA) method. RESULTS Low levels of RMR/kg were strongly associated with higher weight, body mass index, fat mass, and visceral fat levels. In fact, participants with an RMR/kg of body weight <20 kcal/24 h/kg were more obese (p < 0.05). Another noteworthy finding was that participants with lower RMR/kg demonstrated higher total BMD, total T-score, and total Z-score. Our results showed that omentin-1 had a mediatory effect on the relationship between RMR per kilogram of body weight and bone parameters (p < 0.05). Nevertheless, other adipokines such as vaspin, retinol-binding protein 4 (RBP4), and ANGPL6 did not affect the relationship between RMR and BMD (p > 0.05). CONCLUSIONS The inhibitory effect of omentin-1 on TNF-alpha seems to be able to reduce the amount of circulating leptin as adipokine, affecting energy expenditure and improving bone loss induced by estrogen deficiency and controlled effect of RMR on BMD.
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Affiliation(s)
- S Moradi
- Osteoporosis Research Center, Endocrine Diseases and Metabolism Research Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences International Campus (TUMS-IC), Tehran, Iran
| | - K Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), P.O.Box:14155-6117, Tehran, Iran.
| | - A A Abdurahman
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences International Campus (TUMS-IC), Tehran, Iran
| | - S A Keshavarz
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
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Relationship between serum adiponectin and bone mineral density in male patients with obstructive sleep apnea syndrome. Sleep Breath 2017; 21:557-564. [DOI: 10.1007/s11325-017-1492-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 02/07/2017] [Accepted: 03/20/2017] [Indexed: 01/20/2023]
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Wright CS, McMorrow AM, Weinheimer-Haus EM, Campbell WW. Whey Protein Supplementation and Higher Total Protein Intake Do Not Influence Bone Quantity in Overweight and Obese Adults Following a 36-Week Exercise and Diet Intervention. J Nutr 2017; 147:179-186. [PMID: 28003538 PMCID: PMC5265694 DOI: 10.3945/jn.116.240473] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 10/02/2016] [Accepted: 11/30/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Controversy exists concerning the effects of higher total protein intake (TPro) on bone health, which may be associated with reduced bone mineral density (BMD). However, whey protein (WP) may induce bone formation because of its basic component, milk basic protein. OBJECTIVE This study assessed the effects of WP supplementation, TPro, and change in TPro (postsupplementation - presupplementation) on BMD and bone mineral content (BMC; total body, lumbar spine, total femur, and femoral neck) in overweight and class I obese middle-aged adults following an exercise intervention. METHODS This analysis used data from a double-blind, randomized, placebo-controlled 36-wk WP supplementation trial, wherein participants consumed a 1.7-MJ (400-kcal) supplement (0, 20, 40, or 60 g WP/d) along with their otherwise unrestricted diet while participating in a resistance and aerobic exercise intervention (3 d/wk). TPro was the summation of WP and habitual dietary intakes (4-d food record). Statistical analyses for WP were based on group and bone data [n = 186, 108 women; mean ± SD age: 49 ± 8 y; body mass index (BMI; in kg/m2): 30.1 ± 2.8], whereas TPro was based on dietary and bone data (n = 113, 70 women; age 50 ± 8 y; BMI 30.1 ± 2.9). RESULTS WP supplementation, regardless of dose, did not influence BMD or BMC following the intervention. By using a multiple linear regression model, TPro (expressed as g/d or g · kg-1 · d-1) and change in TPro (expressed as g/d) were not associated with responses over time in total or regional BMD or BMC. By using a cluster analysis approach [<1.0 (n = 41), 1.0-1.2 (n = 28), and ≥1.2 g · kg-1 · d-1 (n = 44)], TPro was also not associated with responses in total or regional BMD or BMC over time. CONCLUSION WP supplementation and total dietary protein intake did not negatively or beneficially influence bone quantity in overweight and obese adults during a 9-mo exercise intervention. This trial was registered at clinicaltrials.gov as NCT00812409.
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Affiliation(s)
- Christian S Wright
- Department of Nutrition Science, Purdue University, West Lafayette, IN; and
| | | | | | - Wayne W Campbell
- Department of Nutrition Science, Purdue University, West Lafayette, IN; and
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Nutrition and IBD: Malnutrition and/or Sarcopenia? A Practical Guide. Gastroenterol Res Pract 2017; 2017:8646495. [PMID: 28127306 PMCID: PMC5239980 DOI: 10.1155/2017/8646495] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/12/2016] [Accepted: 12/04/2016] [Indexed: 12/11/2022] Open
Abstract
Malnutrition is a major complication of inflammatory bowel disease (IBD). This mini review is focusing on main determinants of malnutrition in IBD, the most important components of malnutrition, including lean mass loss and sarcopenia, as an emerging problem. Each one of these components needs to be well considered in a correct nutritional evaluation of an IBD patient in order to build a correct multidisciplinary approach. The review is then focusing on possible instrumental and clinical armamentarium for the nutritional evaluation.
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Siviero-Miachon AA, Spinola-Castro AM, de Martino Lee ML, Calixto AR, Geloneze B, Lazaretti-Castro M, Guerra-Junior G. Visfatin is a positive predictor of bone mineral density in young survivors of acute lymphocytic leukemia. J Bone Miner Metab 2017; 35:73-82. [PMID: 26661660 DOI: 10.1007/s00774-015-0728-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 11/18/2015] [Indexed: 12/18/2022]
Abstract
Bone mass acquisition may be compromised in survivors of childhood acute lymphocytic leukemia due to various factors, including adiposity. Fat accumulation can affect bone through the direct effect of adipokines or indirectly through the state of chronic inflammation. The aim of this study was to evaluate the effect of body composition and adipokines on bone mass in survivors of acute lymphocytic leukemia. This was a cross-sectional study of 56 survivors aged between 15 and 24 years, 44.6 % of whom received cranial radiotherapy (18-24 Gy), assessed according to body fat, lean mass, and bone mineral density (dual energy X-ray absorptiometry), computed tomography scan-derived abdominal adipose tissue, and adipokines by a multiple regression analysis. Both lumbar spine L1-L4 (trabecular bone) and total body (cortical bone) bone mineral density were positively correlated with visfatin (p < 0.050). Lean mass index was positively correlated, while waist-to-height ratio was negatively correlated with cortical bone (p < 0.010). Low bone mineral density for chronological age was detected in 5.4 % of patients in total body, and 8.9 % at the lumbar spine. In survivors of acute lymphocytic leukemia, visfatin may play an important role in the complex relationship between body composition and bone. At present, visfatin may represent a model for further study of bone metabolism, and could possibly explain the unknown mechanisms linking bone metabolism and cancer.
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Affiliation(s)
- Adriana Aparecida Siviero-Miachon
- Division of Pediatric Endocrinology, Department of Pediatrics, Federal University of Sao Paulo-UNIFESP/EPM, 307 Doutor Diogo de Faria Street, Sao Paulo, 04037-000, Brazil
- Pediatric Oncology Institute-IOP/GRAACC, UNIFESP/EPM, 743 Botucatu Street, Sao Paulo, 04023-062, Brazil
| | - Angela Maria Spinola-Castro
- Division of Pediatric Endocrinology, Department of Pediatrics, Federal University of Sao Paulo-UNIFESP/EPM, 307 Doutor Diogo de Faria Street, Sao Paulo, 04037-000, Brazil.
- Pediatric Oncology Institute-IOP/GRAACC, UNIFESP/EPM, 743 Botucatu Street, Sao Paulo, 04023-062, Brazil.
| | | | - Antonio Ramos Calixto
- Laboratory of Investigation on Metabolism and Diabetes-LIMED, Faculty of Medical Sciences, State University of Campinas-UNICAMP, 420 Carlos Chagas Street, Campinas, 13083-878, Brazil
| | - Bruno Geloneze
- Laboratory of Investigation on Metabolism and Diabetes-LIMED, Faculty of Medical Sciences, State University of Campinas-UNICAMP, 420 Carlos Chagas Street, Campinas, 13083-878, Brazil
| | - Marise Lazaretti-Castro
- Division of Endocrinology and Metabolism, Department of Medicine, Federal University of Sao Paulo-UNIFESP/EPM, 910 Pedro de Toledo Street, Sao Paulo, 04039-032, Brazil
| | - Gil Guerra-Junior
- Division of Pediatric Endocrinology, Department of Pediatrics, Faculty of Medical Sciences, State University of Campinas-UNICAMP, "Zeferino Vaz" University City, 126 Tessalia Vieira de Camargo Street, Campinas, 13083-887, Brazil
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Lombardi G, Sanchis-Gomar F, Perego S, Sansoni V, Banfi G. Implications of exercise-induced adipo-myokines in bone metabolism. Endocrine 2016; 54:284-305. [PMID: 26718191 DOI: 10.1007/s12020-015-0834-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/14/2015] [Indexed: 12/12/2022]
Abstract
Physical inactivity has been recognized, by the World Health Organization as the fourth cause of death (5.5 % worldwide). On the contrary, physical activity (PA) has been associated with improved quality of life and decreased risk of several diseases (i.e., stroke, hypertension, myocardial infarction, obesity, malignancies). Bone turnover is profoundly affected from PA both directly (load degree is the key determinant for BMD) and indirectly through the activation of several endocrine axes. Several molecules, secreted by muscle (myokines) and adipose tissues (adipokines) in response to exercise, are involved in the fine regulation of bone metabolism in response to the energy availability. Furthermore, bone regulates energy metabolism by communicating its energetic needs thanks to osteocalcin which acts on pancreatic β-cells and adipocytes. The beneficial effects of exercise on bone metabolism depends on the intermittent exposure to myokines (i.e., irisin, IL-6, LIF, IGF-I) which, instead, act as inflammatory/pro-resorptive mediators when chronically elevated; on the other hand, the reduction in the circulating levels of adipokines (i.e., leptin, visfatin, adiponectin, resistin) sustains these effects as well as improves the whole-body metabolic status. The aim of this review is to highlight the newest findings about the exercise-dependent regulation of these molecules and their role in the fine regulation of bone metabolism.
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Affiliation(s)
- Giovanni Lombardi
- Laboratory of Experimental Biochemistry & Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy.
| | | | - Silvia Perego
- Laboratory of Experimental Biochemistry & Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
| | - Veronica Sansoni
- Laboratory of Experimental Biochemistry & Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
| | - Giuseppe Banfi
- Laboratory of Experimental Biochemistry & Molecular Biology, I.R.C.C.S. Istituto Ortopedico Galeazzi, Via Riccardo Galeazzi 4, 20161, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
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Chemerin, visfatin, and vaspin serum levels in relation to bone mineral density in patients with inflammatory bowel disease. Eur J Gastroenterol Hepatol 2016; 28:814-9. [PMID: 26934527 DOI: 10.1097/meg.0000000000000617] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND There is evidence that fat mass is correlated with bone mineral density (BMD) in inflammatory bowel disease (IBD), but data on the role of adipokines on this association are limited. The aim of this study was to investigate the serum levels of chemerin, visfatin, and vaspin, hormones that act as adipokines, in relation to BMD in patients with ulcerative colitis (UC) and Crohn's disease (CD). PATIENTS AND METHODS Serum from 120 IBD patients (68 CD, 52 UC) and 98 matched healthy controls (HC) was collected. Chemerin, visfatin, and vaspin levels were assessed using an enzyme-linked immunosorbent assay. BMD was determined for the lumbar spine and the proximal femur using dual-energy X-ray absorptiometry. Full-body composition scans were analyzed using enCORE software based on the absorptiometry system. RESULTS Serum chemerin was higher in IBD patients than HC [CD 13.67.1±5.8, UC 13.9±4.3 vs. HC 7.8±2.6 ng/ml, odds ratio (OR): 0.95, 95% confidence interval (CI) 0.93-0.98, P<0.0001]. Serum visfatin levels in CD patients were significantly higher than those in UC patients (9.3±14.01 vs. 6.5±7.2 ng/ml, OR: 0.86, 95% CI 0.80-0.92, P=0.039). In multivariate logistic regression analysis, a significant independent association of osteoporosis (T-score ≤2.5 SD) with age (OR: 1.04, 95% CI 1.01-1.08, P=0.02), visfatin (OR: 0.78, 95% CI 0.63-0.97, P=0.02), and chemerin levels (OR: 0.83, 95% CI 0.70-0.98, P=0.03), but not with BMI or body composition, was found. CONCLUSION Serum visfatin and chemerin levels are associated with the development of osteoporosis in IBD. These results suggest a role of visfatin and chemerin in the pathophysiology of osteoporosis in IBD.
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Epstein S, Defeudis G, Manfrini S, Napoli N, Pozzilli P. Diabetes and disordered bone metabolism (diabetic osteodystrophy): time for recognition. Osteoporos Int 2016; 27:1931-51. [PMID: 26980458 DOI: 10.1007/s00198-015-3454-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/07/2015] [Indexed: 02/06/2023]
Abstract
Diabetes and osteoporosis are rapidly growing diseases. The link between the high fracture incidence in diabetes as compared with the non-diabetic state has recently been recognized. While this review cannot cover every aspect of diabetic osteodystrophy, it attempts to incorporate current information from the First International Symposium on Diabetes and Bone presentations in Rome in 2014. Diabetes and osteoporosis are fast-growing diseases in the western world and are becoming a major problem in the emerging economic nations. Aging of populations worldwide will be responsible for an increased risk in the incidence of osteoporosis and diabetes. Furthermore, the economic burden due to complications of these diseases is enormous and will continue to increase unless public awareness of these diseases, the curbing of obesity, and cost-effective measures are instituted. The link between diabetes and fractures being more common in diabetics than non-diabetics has been widely recognized. At the same time, many questions remain regarding the underlying mechanisms for greater bone fragility in diabetic patients and the best approach to risk assessment and treatment to prevent fractures. Although it cannot cover every aspect of diabetic osteodystrophy, this review will attempt to incorporate current information particularly from the First International Symposium on Diabetes and Bone presentations in Rome in November 2014.
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Affiliation(s)
- S Epstein
- Division of Endocrinology, Mount Sinai School of Medicine, New York, NY, USA
| | - G Defeudis
- Unit of Endocrinology and Diabetes, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128, Rome, Italy.
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy.
| | - S Manfrini
- Unit of Endocrinology and Diabetes, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128, Rome, Italy
| | - N Napoli
- Unit of Endocrinology and Diabetes, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128, Rome, Italy
| | - P Pozzilli
- Unit of Endocrinology and Diabetes, Department of Medicine, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21-00128, Rome, Italy
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BMI and BMD: The Potential Interplay between Obesity and Bone Fragility. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13060544. [PMID: 27240395 PMCID: PMC4924001 DOI: 10.3390/ijerph13060544] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 05/12/2016] [Accepted: 05/19/2016] [Indexed: 01/05/2023]
Abstract
Recent evidence demonstrating an increased fracture risk among obese individuals suggests that adipose tissue may negatively impact bone health, challenging the traditional paradigm of fat mass playing a protective role towards bone health. White adipose tissue, far from being a mere energy depot, is a dynamic tissue actively implicated in metabolic reactions, and in fact secretes several hormones called adipokines and inflammatory factors that may in turn promote bone resorption. More specifically, Visceral Adipose Tissue (VAT) may potentially prove detrimental. It is widely acknowledged that obesity is positively associated to many chronic disorders such as metabolic syndrome, dyslipidemia and type 2 diabetes, conditions that could themselves affect bone health. Although aging is largely known to decrease bone strength, little is yet known on the mechanisms via which obesity and its comorbidities may contribute to such damage. Given the exponentially growing obesity rate in recent years and the increased life expectancy of western countries it appears of utmost importance to timely focus on this topic.
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Fate decision of mesenchymal stem cells: adipocytes or osteoblasts? Cell Death Differ 2016; 23:1128-39. [PMID: 26868907 PMCID: PMC4946886 DOI: 10.1038/cdd.2015.168] [Citation(s) in RCA: 764] [Impact Index Per Article: 95.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 11/03/2015] [Accepted: 12/01/2015] [Indexed: 12/18/2022] Open
Abstract
Mesenchymal stem cells (MSCs), a non-hematopoietic stem cell population first discovered in bone marrow, are multipotent cells capable of differentiating into mature cells of several mesenchymal tissues, such as fat and bone. As common progenitor cells of adipocytes and osteoblasts, MSCs are delicately balanced for their differentiation commitment. Numerous in vitro investigations have demonstrated that fat-induction factors inhibit osteogenesis, and, conversely, bone-induction factors hinder adipogenesis. In fact, a variety of external cues contribute to the delicate balance of adipo-osteogenic differentiation of MSCs, including chemical, physical, and biological factors. These factors trigger different signaling pathways and activate various transcription factors that guide MSCs to commit to either lineage. The dysregulation of the adipo-osteogenic balance has been linked to several pathophysiologic processes, such as aging, obesity, osteopenia, osteopetrosis, and osteoporosis. Thus, the regulation of MSC differentiation has increasingly attracted great attention in recent years. Here, we review external factors and their signaling processes dictating the reciprocal regulation between adipocytes and osteoblasts during MSC differentiation and the ultimate control of the adipo-osteogenic balance.
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Kuźniewski M, Fedak D, Dumnicka P, Kapusta M, Stępień E, Chowaniec E, Krzanowska K, Krzanowski M, Chmiel G, Solnica B, Sułowicz W. Carboxylated and intact osteocalcin predict adiponectin concentration in hemodialyzed patients. Ren Fail 2016; 38:451-7. [PMID: 26822199 DOI: 10.3109/0886022x.2016.1138830] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Purpose Disrupted bone metabolism in patients with chronic kidney disease (CKD) is associated with elevated concentrations of biochemical bone markers. Recently, animal studies show the role of osteocalcin in energy metabolism, which is partially confirmed in humans. The aim of our study was to evaluate the relationships between serum concentrations of bone markers and indices of energy metabolism in CKD patients on maintenance hemodialysis; in particular, the relationship between various forms of osteocalcin and adiponectin. Patients and methods The cross-sectional study included 155 hemodialyzed stage 5 CKD patients. Serum concentrations of glucose, insulin, adiponectin, bone alkaline phosphatase (bALP), tartrate resistant acid phosphatase (TRAP), carboxylated (cOC), undercarboxylated (ucOC), and intact osteocalcin (OC) were determined. Results In total cohort, bALP, TRAP, cOC, and ucOC negatively correlated with BMI. All analyzed bone markers positively correlated with adiponectin in total cohort and in men. In multiple linear regression analysis including all patients, log(cOC) and log(intact OC) were the only bone markers that predicted log(adiponectin) (beta = 0.22; p = 0.016 and beta = 0.26; p = 0.010) independently of sex, dialysis vintage, CRP, insulin, iPTH concentrations, BMI, and age. Conclusions Our data confirm the positive association between cOC, intact OC, and adiponectin concentrations in CKD patients on maintenance hemodialysis.
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Affiliation(s)
- Marek Kuźniewski
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
| | - Danuta Fedak
- b Chair of Clinical Biochemistry, Diagnostic Department , Jagiellonian University Medical College , Kraków , Poland
| | - Paulina Dumnicka
- c Department of Medical Diagnostics , Jagiellonian University Medical College , Kraków , Poland
| | - Maria Kapusta
- b Chair of Clinical Biochemistry, Diagnostic Department , Jagiellonian University Medical College , Kraków , Poland
| | - Ewa Stępień
- d Department of Medical Physics, M. Smoluchowski Institute of Physics , Jagiellonian University , Kraków , Poland
| | - Eve Chowaniec
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
| | - Katarzyna Krzanowska
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
| | - Marcin Krzanowski
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
| | - Grzegorz Chmiel
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
| | - Bogdan Solnica
- b Chair of Clinical Biochemistry, Diagnostic Department , Jagiellonian University Medical College , Kraków , Poland
| | - Władysław Sułowicz
- a Chair and Department of Nephrology , Jagiellonian University Medical College , Kraków , Poland
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Bazzocchi A, Ponti F, Diano D, Amadori M, Albisinni U, Battista G, Guglielmi G. Trabecular bone score in healthy ageing. Br J Radiol 2015; 88:20140865. [PMID: 26148778 DOI: 10.1259/bjr.20140865] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The main aim of this work was to report on trabecular bone score (TBS) by dual-energy X-ray absorptiometry (DXA) of healthy Italian subjects to be used as a reference standard for future study in clinical and research settings. The secondary aim was to investigate the link between TBS and conventional parameters of bone and body composition by DXA. METHODS 250 individuals of 5 age bands (spanning from 18 to 70 years of age, equally distributed for both age and sex) were prospectively recruited. A lumbar spine (LS) DXA scan (Lunar iDXA™; GE Healthcare, Madison, WI) was acquired for each subject and then analysed with the latest version of TBS iNsight v. 2.1 (Med-Imaps, Pessac, France) software. LS bone mineral density (LS BMD), Z-score, T-score and TBS values were collected. Pearson's test was used to investigate the correlations between TBS and LS BMD and the influence of age, body mass index (BMI) and body composition on these parameters. RESULTS A significant decrease of TBS and LS BMD was observed with ageing in both males (TBS mean values from 1.486 to 1.374; LS BMD mean values from 1.219 to 1.187) and females (TBS mean values from 1.464 to 1.306; LS BMD mean values from 1.154 to 1.116). No statistically significant difference was achieved among males and females of the same age group for both TBS and LS BMD, with the exception of the fifth age group. A significant correlation was found between LS BMD and TBS values in both sexes (r = 0.555-0.655, p < 0.0001). BMI influenced LS BMD but not TBS. TBS values were inversely correlated with some fat mass parameters, in particular with visceral adipose tissue (in males: r = -0.332, p < 0.001; in females: r = -0.348, p < 0.0001). No significant correlation was found between TBS and total lean mass, opposite to LS BMD (in males: r = 0.418; p < 0.0001; in females: r = -0.235; p < 0.001). CONCLUSION This report is an attempt to start building a database for healthy Italian people providing age- and sex-specific reference curves for TBS. This could help clinicians to improve patient management in the detection of impaired bone mineral status and to monitor bone changes. ADVANCES IN KNOWLEDGE The study reports TBS values of a selectively enrolled Italian healthy population, ranging from younger to older ages and including males as a reference standard. Moreover, links between body composition and TBS are explored.
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Affiliation(s)
- A Bazzocchi
- 1 Diagnostic and Interventional Radiology, The "Rizzoli" Orthopaedic Institute, Bologna, Italy
| | - F Ponti
- 2 Department of Specialized, Diagnostic, and Experimental Medicine, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - D Diano
- 2 Department of Specialized, Diagnostic, and Experimental Medicine, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - M Amadori
- 2 Department of Specialized, Diagnostic, and Experimental Medicine, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - U Albisinni
- 1 Diagnostic and Interventional Radiology, The "Rizzoli" Orthopaedic Institute, Bologna, Italy
| | - G Battista
- 2 Department of Specialized, Diagnostic, and Experimental Medicine, University of Bologna, Sant'Orsola-Malpighi Hospital, Bologna, Italy
| | - G Guglielmi
- 3 Department of Radiology, University of Foggia, Foggia, Italy.,4 Department of Radiology, Scientific Institute "Casa Sollievo della Sofferenza" Hospital, Foggia, Italy
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Cao J, Ou G, Yang N, Ding K, Kream BE, Hamrick MW, Isales CM, Shi XM. Impact of targeted PPARγ disruption on bone remodeling. Mol Cell Endocrinol 2015; 410:27-34. [PMID: 25666993 PMCID: PMC4444378 DOI: 10.1016/j.mce.2015.01.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/24/2015] [Accepted: 01/25/2015] [Indexed: 01/21/2023]
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ), known as the master regulator of adipogenesis, has been regarded as a promising target for new anti-osteoporosis therapy due to its role in regulating bone marrow mesenchymal stem/progenitor cell (BMSC) lineage commitment. However, the precise mechanism underlying PPARγ regulation of bone is not clear as a bone-specific PPARγ conditional knockout (cKO) study has not been conducted and evidence showed that deletion of PPARγ in other tissues also have profound effect on bone. In this study, we show that mice deficiency of PPARγ in cells expressing a 3.6 kb type I collagen promoter fragment (PPAR(fl/fl):Col3.6-Cre) exhibits a moderate, site-dependent bone mass phenotype. In vitro studies showed that adipogenesis is abolished completely and osteoblastogenesis increased significantly in both primary bone marrow culture and the BMSCs isolated from PPARγ cKO mice. Histology and histomorphometry studies revealed significant increases in the numbers of osteoblasts and surface in the PPARγ cKO mice. Finally, we found that neither the differentiation nor the function of osteoclasts was affected in the PPARγ cKO mice. Together, our studies indicate that PPARγ plays an important role in bone remodeling by increasing the abundance of osteoblasts for repair, but not during skeletal development.
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Affiliation(s)
- Jay Cao
- USDA ARS Grand Forks Human Nutrition Research Center, Grand Forks, ND, United States
| | - Guomin Ou
- Department of Neuroscience & Regenerative Medicine, Georgia Regents University, Augusta, GA, United States
| | - Nianlan Yang
- Department of Neuroscience & Regenerative Medicine, Georgia Regents University, Augusta, GA, United States
| | - Kehong Ding
- Department of Neuroscience & Regenerative Medicine, Georgia Regents University, Augusta, GA, United States
| | - Barbara E Kream
- Department of Medicine, University of Connecticut Health Center, Farmington, CT, United States
| | - Mark W Hamrick
- Department of Cell Biology, Georgia Regents University, Augusta, GA, United States
| | - Carlos M Isales
- Department of Neuroscience & Regenerative Medicine, Georgia Regents University, Augusta, GA, United States; Department of Orthopaedic Surgery, Georgia Regents University, Augusta, GA, United States
| | - Xing-Ming Shi
- Department of Neuroscience & Regenerative Medicine, Georgia Regents University, Augusta, GA, United States; Department of Orthopaedic Surgery, Georgia Regents University, Augusta, GA, United States.
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Wauquier F, Léotoing L, Philippe C, Spilmont M, Coxam V, Wittrant Y. Pros and cons of fatty acids in bone biology. Prog Lipid Res 2015; 58:121-45. [PMID: 25835096 DOI: 10.1016/j.plipres.2015.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/06/2015] [Accepted: 03/23/2015] [Indexed: 12/12/2022]
Abstract
Despite the growing interest in deciphering the causes and consequences of obesity-related disorders, the mechanisms linking fat intake to bone behaviour remain unclear. Since bone fractures are widely associated with increased morbidity and mortality, most notably in elderly and obese people, bone health has become a major social and economic issue. Consistently, public health system guidelines have encouraged low-fat diets in order to reduce associated complications. However, from a bone point of view, mechanisms linking fat intake to bone alteration remain quite controversial. Thus, after more than a decade of dedicated studies, this timely review offers a comprehensive overview of the relationships between bone and fatty acids. Using clinical evidences as a starting-point to more complex molecular elucidation, this work highlights the complexity of the system and reveals that bone alteration that cannot be solved simply by taking ω-3 pills. Fatty acid effects on bone metabolism can be both direct and indirect and require integrated investigations. Furthermore, even at the level of a single cell, one fatty acid is able to trigger several different independent pathways (receptors, metabolites…) which may all have a say in the final cellular metabolic response.
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Affiliation(s)
- Fabien Wauquier
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Laurent Léotoing
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Claire Philippe
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Mélanie Spilmont
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Véronique Coxam
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France
| | - Yohann Wittrant
- INRA, UMR 1019, UNH, CRNH Auvergne, F-63009 Clermont-Ferrand, France; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand, France; Equipe Alimentation, Squelette et Métabolismes, France.
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Liu K, Liu P, Liu R, Wu X, Cai M. Relationship between serum leptin levels and bone mineral density: a systematic review and meta-analysis. Clin Chim Acta 2015; 444:260-3. [PMID: 25748037 DOI: 10.1016/j.cca.2015.02.040] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 02/22/2015] [Accepted: 02/23/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND The association between leptin and bone mineral density (BMD) is controversial because of conflicting findings from previous studies. METHODS This meta-analysis aimed to provide an overview of the serum leptin levels and BMD in a healthy population. We reviewed the PubMed, Embase, and Cochrane Library databases until July 2014 for research on the association between leptin levels and BMD in healthy people. RESULTS We included and analyzed 45 studies in this systematic review and meta-analysis. The pooled correlations between leptin and BMD were analyzed by using the method of the inverse of the variance. Leptin was positively associated with BMD and the bone mineral content (BMC), especially in postmenopausal women (pooled r: 0.13-0.49). Overall, high serum leptin levels were associated with higher BMD levels. CONCLUSIONS This meta-analysis suggests that serum leptin levels are positively associated with BMD and BMC, especially in postmenopausal women.
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Affiliation(s)
- Kuan Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Pengcheng Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Run Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xing Wu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Ming Cai
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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Sabour H, Norouzi Javidan A, Latifi S, Shidfar F, Vafa MR, Emami Razavi SH, Larijani B, Heshmat R. Relationship between leptin and adiponectin concentrations in plasma and femoral and spinal bone mineral density in spinal cord-injured individuals. Spine J 2015; 15:1-9. [PMID: 24948038 DOI: 10.1016/j.spinee.2014.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 05/11/2014] [Accepted: 06/09/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Previously, the associations between leptin and adiponectin levels with bone mineral density (BMD) have been reported in different populations, and occasionally, controversial results have been demonstrated. Until now, these relationships in spinal cord-injured individuals have not yet been described. PURPOSE We tried to investigate the correlation between leptin and adiponectin concentrations in plasma and BMD in Iranian patients with spinal cord injury (SCI). STUDY DESIGN/SETTING Cross-sectional investigation. PATIENT SAMPLE Referred patients with SCI who did not meet our exclusion criteria such as pregnancy, lactation, amputation, history of diabetes, cancer, endocrinology disease, and use of special medications entered the study. OUTCOME MEASURES Bone mineral density of femoral neck, trochanter, intertrochanteric zone, total hip, and lumbar vertebrae assessed by dual-energy X-ray absorptiometry and serum leptin and adiponectin levels measured by blood sample analysis using immunoassay techniques. METHODS Patient demographic characteristics were measured during face-to-face visits. Injury level and Spinal cord Injury Association (ASIA) score were assessed by clinical examination and were confirmed by imaging aids. Measured levels of leptin and adiponectin and dual-energy X-ray absorptiometry results were analyzed with partial correlation analysis method after adjustment for weight, body mass index (BMI), and age. RESULTS Total of 104 patients (19 females and 85 males) entered this investigation. Higher leptin concentration was significantly associated with higher BMD in femoral neck (p=.006, r=0.73), femoral intertrochanteric zone (p=.001, r=0.83), and hip (p=.001, r=0.81) only in female patients, whereas no such association was detected in male participants after adjusting for BMI and age. Leptin and adiponectin levels were not associated with lumbar spine BMD in both genders. Neither injury level nor ASIA score and plegia type (paraplegia or tetraplegia) influenced on leptin and adiponectin concentrations. CONCLUSIONS We found no association between leptin concentration and BMD in male individuals, whereas a positive correlation between leptin and BMD of femoral neck, intertrochanter, and hip was observed in female patients that shows a sexual polymorphism in this relationship. However, by considering the low number of female participants, these results should be interpreted cautiously. Lumbar spine BMD was associated with neither leptin nor adiponectin level in both genders.
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Affiliation(s)
- Hadis Sabour
- Brain and Spinal Injury Research Center (BASIR), Tehran University of Medical Sciences, Keshavarz Blvd, Tehran, Iran
| | - Abbas Norouzi Javidan
- Brain and Spinal Injury Research Center (BASIR), Tehran University of Medical Sciences, Keshavarz Blvd, Tehran, Iran
| | - Sahar Latifi
- Brain and Spinal Injury Research Center (BASIR), Tehran University of Medical Sciences, Keshavarz Blvd, Tehran, Iran
| | - Farzad Shidfar
- Department of Nutrition, Iran University of Medical Sciences, Hemat Highway, Tehran, Iran
| | - Mohammad Reza Vafa
- Department of Nutrition, Iran University of Medical Sciences, Hemat Highway, Tehran, Iran
| | - Seyed-Hassan Emami Razavi
- Brain and Spinal Injury Research Center (BASIR), Tehran University of Medical Sciences, Keshavarz Blvd, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Institute (EMRI), Tehran University of Medical Sciences, Shariati Hospital, North Kargar Avenue, Tehran, Iran
| | - Ramin Heshmat
- Endocrinology and Metabolism Research Institute (EMRI), Tehran University of Medical Sciences, Shariati Hospital, North Kargar Avenue, Tehran, Iran; Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, No. 111, 19th St, North Karegar, Tehran 14579-65597, Iran.
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Association of adulthood weight gain with circulating adipokine and insulin resistance in the Japanese population. Eur J Clin Nutr 2014; 69:462-6. [DOI: 10.1038/ejcn.2014.257] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 10/12/2014] [Accepted: 10/29/2014] [Indexed: 02/07/2023]
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Wang QP, Li XP, Wang M, Zhao LL, Li H, Xie H, Lu ZY. Adiponectin exerts its negative effect on bone metabolism via OPG/RANKL pathway: an in vivo study. Endocrine 2014; 47:845-53. [PMID: 24627163 DOI: 10.1007/s12020-014-0216-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 02/14/2014] [Indexed: 01/08/2023]
Abstract
To explore the effects of adiponectin on the bone metabolism in vivo. Bone mineral density (BMD), bone microstructure, serum adiponectin levels, and biochemical markers of the bone turnover were measured in 12-week-old male Adipo-/- and WT mice. In addition, the osteoclast formation, osteoprotegerin (OPG), and the receptor activator of nuclear factor-κB ligand (RANKL) expression were examined. The serum adiponectin levels were normal in the WT mice while undetectable in the Adipo-/- mice. Compared with the WT mice, the Adipo-/- mice had higher BMD, more trabecular bone, greater bone volume fraction, and trabecular thickness in the left femur. On the contrary, fewer osteoclasts were observed in the Adipo-/- mice when compared with the WT mice. Meanwhile, the Adipo-/- mice had a significantly decreased serum carboxyl-terminal telopeptide of type 1 collagen (CTX)/osteocalcin (OC) ratio. Interestingly, both the adiponectin and RANKL would cause a significant increase of CTX/OC ratio in the co-culture of the CD14+ peripheral blood mononuclear cells and the osteoblasts from Adipo-/- mice. Further, immunohistochemistry assays in tibias and both the RT-PCR and immunoblot analyses in the cultured osteoblasts showed the Adipo-/- mice expressed lower levels of RANKL but higher levels of OPG. Adiponectin had a negative effect on the bone metabolism, and this negative effect might be mediated, at least in part, by the OPG/RANKL pathway.
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Affiliation(s)
- Qing-Ping Wang
- Department of Clinical Laboratory, The Shaoxing Hospital of China Medical University, 1# Huayu Road Keqiao, Shaoxing, Zhejiang, 312030, People's Republic of China
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Tan CO, Battaglino RA, Doherty AL, Gupta R, Lazzari AA, Garshick E, Zafonte R, Morse LR. Adiponectin is associated with bone strength and fracture history in paralyzed men with spinal cord injury. Osteoporos Int 2014; 25:2599-607. [PMID: 24980185 PMCID: PMC4861654 DOI: 10.1007/s00198-014-2786-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 06/19/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED We explored the association between adiponectin levels and bone strength in paralyzed men with spinal cord injury. We found that bone strength was inversely associated with circulating adiponectin levels. Thus, strength estimates and adiponectin levels may improve fracture risk prediction and detection of response to osteogenic therapies following spinal cord injury. PURPOSE Previous research has demonstrated an inverse relationship between circulating adiponectin and bone mineral density, suggesting that adiponectin may be used as a biomarker for bone health. However, this relationship may reflect indirect effects on bone metabolism via adipose-mediated mechanical pathways rather than the direct effects of adipokines on bone metabolism. Thus, we explored the association between circulating adiponectin levels and bone strength in 27 men with spinal cord injury. METHODS Plasma adiponectin levels were quantified by ELISA assay. Axial stiffness and maximal load to fracture of the distal femur were quantified via finite element analysis using reconstructed 3D models of volumetric CT scans. We also collected information on timing, location, and cause of previous fractures. RESULTS Axial stiffness and maximal load were inversely associated with circulating adiponectin levels (R (2) = 0.44, p = 0.01; R (2) = 0.58, p = 0.05) after adjusting for injury duration and lower extremity lean mass. In individuals with post-SCI osteoporotic fractures, distal femur stiffness (p = 0.01) and maximal load (p = 0.005) were lower, and adiponectin was higher (p = 0.04) than those with no fracture history. CONCLUSIONS Based on these findings, strength estimates may improve fracture risk prediction and detection of response to osteogenic therapies following spinal cord injury. Furthermore, our findings suggest that circulating adiponectin may indeed be a feasible biomarker for bone health and osteoporotic fracture risk in paralyzed individuals with spinal cord injury.
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Affiliation(s)
- C. O. Tan
- Spaulding-Harvard SCI Model System, Spaulding Rehabilitation Hospital, Boston, MA, USA. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
| | - R. A. Battaglino
- The Forsyth Institute, Cambridge, MA, USA. Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - A. L. Doherty
- Spaulding-Harvard SCI Model System, Spaulding Rehabilitation Hospital, Boston, MA, USA
| | - R. Gupta
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - A. A. Lazzari
- Primary Care and Rheumatology Sections, VA Boston Healthcare System, Boston University School of Medicine, Boston, MA, USA
| | - E. Garshick
- Pulmonary and Critical Care Medicine Section, Medical Service, VA Boston Healthcare System, Boston, MA, USA. Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - R. Zafonte
- Spaulding-Harvard SCI Model System, Spaulding Rehabilitation Hospital, Boston, MA, USA. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA
| | - L. R. Morse
- Spaulding-Harvard SCI Model System, Spaulding Rehabilitation Hospital, Boston, MA, USA. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA. The Forsyth Institute, Cambridge, MA, USA
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Abstract
Osteopenia and osteoporosis are common manifestations in inflammatory bowel diseases (IBD) but the pathogenetic mechanism of bone loss in IBD is only partially understood. There is evidence that fat mass is an important determinant of the bone mineral density and adipose-derived factors seem to play an important role for the association between fat mass and bone mass. The association between adiposity and low bone density is rather poorly studied in IBD, but emerging data on adipokines in IBD in relation to osteoporosis provide a novel pathophysiological concept that may shed light on the etiology of bone loss in IBD. It could be suggested that adipokines interfere in bone metabolism by altering the sensitive balance between osteoblasts and osteoclasts although further studies in this setting are needed.
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Pedone C, Napoli N, Pozzilli P, Lauretani F, Bandinelli S, Ferrucci L, Rossi FF, Antonelli-Incalzi R. Bone health as a function of adipokines and vitamin D pattern in elderly patients. Rejuvenation Res 2014; 16:467-74. [PMID: 23829612 DOI: 10.1089/rej.2013.1436] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Adiponectin, leptin, and resistin are involved in bone metabolism, but the evidence regarding their effects is not conclusive. We analyzed the relationship between these adipokines, vitamin D, and bone health using a cluster analysis approach. METHODS We used cross-sectional data coming from the InCHIANTI study, in which bone density and area were estimated using computed tomography. The sample size was 690 (women, 57.5%; mean age, 75.2 years; range, 65-102). Five clusters were generated on the basis of gender, age, adipokines, and vitamin D concentrations. The clusters were characterized, respectively, by higher resistin and older age (hR-O, n=134), higher vitamin D and younger age (hD-Y, n=152), higher adiponectin (hA, n=65), and higher leptin (hL, n=52). The last cluster had intermediate values of all the constituting variables (I, n=287). The clusters were compared with respect to bone parameters and clinical characteristics. RESULTS Cluster hR-O had the lowest total and cortical bone density. Cluster hD-Y had the lowest adiponectin (9.29 g/mL) and leptin (7.9 ng/mL) serum concentrations, the highest prevalence of men (71.1%), and total/cortical bone density and area. No statistically significant difference across clusters was observed for age- and sex-standardized measures of bone mineral density and bone area, but leptin was associated with these parameters in a linear model adjusted for age, gender, vitamin D, resistin, and leptin. CONCLUSIONS In an elderly population, age and sex almost completely explain the variability in bone status across cluster characterized by different levels of circulating adipokines and vitamin D. The role of leptin, however, seems worthy of consideration.
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Affiliation(s)
- Claudio Pedone
- 1 Geriatric Unit, "Campus Biomedico" University , Roma, Italy
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Mohiti-Ardekani J, Soleymani-Salehabadi H, Owlia MB, Mohiti A. Relationships between serum adipocyte hormones (adiponectin, leptin, resistin), bone mineral density and bone metabolic markers in osteoporosis patients. J Bone Miner Metab 2014; 32:400-4. [PMID: 24052207 DOI: 10.1007/s00774-013-0511-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Accepted: 08/07/2013] [Indexed: 12/21/2022]
Abstract
The purpose of this study was to investigate the relationship between fasting serum leptin, adiponectin and resistin levels and bone mineral density (BMD) in osteoporosis patients and a non-osteoporosis control group. We studied 81 non-diabetic osteoporosis patients (92 % female, 8 % male; mean age 54.5 ± 15.5 years and body mass index [BMI] 28.2 ± 4.6) and 120 non-diabetic individuals with normal BMD as controls (86 % female, 14 % male; mean age 39.7 ± 10.4 years and BMI 28.8 ± 4.4). BMD was studied by dual-energy X-ray absorptiometry from the lumbar spine (L1-L4) and femoral neck and fasting blood samples were taken for biochemical measurement of fasting blood glucose, leptin, adiponectin and resistin. Fasting levels of plasma adiponectin had a significant negative correlation with BMD of the femoral neck and lumbar spine in the osteoporosis group (r = -0.478, P = 0.003, r = -0.513, P = 0.023) but not in the non-osteoporosis group (r = -0.158, P = 0.057, r = -0.23, P = 0.465). Fasting plasma levels of resistin were significantly correlated only with femur BMD in the osteoporosis group, and not significantly correlated with lumbar spine BMD (r = -0.244, P = 0.048 vs r = 0.276, P = 0.56). Leptin did not have a significant correlation with BMD in either the osteoporosis or non-osteoporosis groups (P > 0.05). Adiponectin had a significant negative correlation with BMD of the lumbar spine and femoral neck. The correlation between leptin and resistin are not inconclusive.
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Affiliation(s)
- J Mohiti-Ardekani
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Shahid Saduoghi University of Medical Science, Yazd, Iran,
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Scotece M, Conde J, Abella V, López V, Pino J, Lago F, Gómez-Reino JJ, Gualillo O. Bone metabolism and adipokines: are there perspectives for bone diseases drug discovery? Expert Opin Drug Discov 2014; 9:945-57. [PMID: 24857197 DOI: 10.1517/17460441.2014.922539] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Over the past 20 years, the idea that white adipose tissue (WAT) is simply an energy depot organ has been radically changed. Indeed, present understanding suggests WAT to be an endocrine organ capable of producing and secreting a wide variety of proteins termed adipokines. These adipokines appear to be relevant factors involved in a number of different functions, including metabolism, immune response, inflammation and bone metabolism. AREAS COVERED In this review, the authors focus on the effects of several adipose tissue-derived factors in bone pathophysiology. They also consider how the modification of the adipokine network could potentially lead to promising treatment options for bone diseases. EXPERT OPINION There are currently substantial developments being made in the understanding of the interplay between bone metabolism and the metabolic system. These insights could potentially lead to the development of new treatment strategies and interventions with the aim of successful outcomes in many people affected by bone disorders. Specifically, future research should look into the intimate mechanisms regulating peripheral and central activity of adipokines as it has potential for novel drug discovery.
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Affiliation(s)
- Morena Scotece
- Santiago University Clinical Hospital, SERGAS, Division of Rheumatology, Research Laboratory 9 , Santiago de Compostela, 15706 , Spain
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Adipokines as drug targets in joint and bone disease. Drug Discov Today 2014; 19:241-58. [DOI: 10.1016/j.drudis.2013.07.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/09/2013] [Accepted: 07/18/2013] [Indexed: 02/07/2023]
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50
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Adiponectin as a biomarker of osteoporosis in postmenopausal women: controversies. DISEASE MARKERS 2014; 2014:975178. [PMID: 24591772 PMCID: PMC3925580 DOI: 10.1155/2014/975178] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [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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