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Yang R, Ding N, Qin J, Peng H. The relationship between uric acid and bone mineral density in the intermediate stage of CKD 1-3. BMC Nephrol 2024; 25:219. [PMID: 38982346 PMCID: PMC11234712 DOI: 10.1186/s12882-024-03650-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 06/24/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Some studies have suggested that uric acid has antioxidant properties that can prevent bone loss, but the relationship between uric acid and bone mineral density is controversial. The aim of this study was to investigate the relationship between UA and BMD in patients with CKD stage 1-3. METHODS We extracted 13,047 participants from the NHANES database, including 7342 male subjects and 5705 female subjects. Weighted multiple linear regression analysis was used to investigate the correlation between UA and BMD in patients with CKD stages 1-3. RESULTS In patients with CKD stage 1-3, UA was significantly correlated with BMD. In the male group, UA was positively associated with BMD (β, 7.94 [95%CI, 4.95, 10.94]). In the female group, there was a negative relationship between them (β, -5.33 [95%CI, -8.77, -1.89]). The relationship between UA and BMD in male group showed an inverted U-shaped curve, and UA was positively correlated before 6.1 mg/dl and negatively correlated after 6.1 mg/dl. The relationship was basically negative in the female group. CONCLUSIONS For the patients with CKD stage 1-3, the relationship between UA and BMD showed an inverted U-shaped curve in the males, while the relationship was largely negative in the females.
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Affiliation(s)
- Ruiling Yang
- Department of Nephrology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan South Road, Changsha, Hunan, 410004, China
| | - Ning Ding
- Department of Emergency Medicine, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan South Road, Changsha, Hunan, 410004, China.
| | - Jiao Qin
- Department of Nephrology, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan South Road, Changsha, Hunan, 410004, China.
| | - Hongchun Peng
- Department of Orthopedics, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, 161 Shaoshan South Road, Changsha, Hunan, 410004, China.
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Li Y, Qi H, Huang X, Lu G, Pan H. Exogenous and endogenous antioxidants in osteoporosis risk: causal associations unveiled by Mendelian Randomization analysis. Front Physiol 2024; 15:1411148. [PMID: 38883185 PMCID: PMC11176562 DOI: 10.3389/fphys.2024.1411148] [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: 04/02/2024] [Accepted: 05/16/2024] [Indexed: 06/18/2024] Open
Abstract
Background Recent epidemiological studies and animal experiments have highlighted the significant role of oxidative stress in the development of osteoporosis (OP). The provision of antioxidants is widely considered a fundamental strategy to combat free radical-induced stress, inhibit oxidative damage, and potentially reverse the adverse effects of oxidative stress on bone health. However, there is no consensus in the scientific literature regarding the practical effectiveness of antioxidants in OP prevention and treatment. Some studies have not shown a clear connection between antioxidant supplementation and decreased OP risk. Therefore, it is essential to clarify the potential causal relationship between antioxidants and the development of OP. Methods The study utilized the inverse variance weighted (IVW) approach as the primary analytical method in the Mendelian Randomization (MR) framework to investigate the causal effects of five exogenous and six endogenous antioxidants on the risk of OP. To thoroughly assess potential pleiotropic effects and heterogeneity among the data analyzed, the MR-Egger intercept test was employed, and Cochran's Q statistic was calculated. Results In the evaluation of exogenous antioxidants, single-directional two-sample MR analyses did not reveal any statistically significant relationship between these agents and the risk of OP. Regarding endogenous antioxidants, bidirectional two-sample MR analyses were conducted, which generally indicated that most genetically regulated endogenous antioxidants had no significant association with the onset risk of OP. A significant causal relationship was found between OP and serum albumin levels (β: -0.0552, 95%CI: -0.0879 to -0.0225, p < 0.0011 after Bonferroni adjustment, power = 100%). Conclusion The research uncovers OP as a possible determinant contributing to a decrement in serum albumin levels, and further suggests a potentially intimate relationship between the downward trajectory of serum albumin concentrations and the advancement of the OP disease process.
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Affiliation(s)
- Yuancheng Li
- Clinical Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Huaqian Qi
- School of Physical Education and Health, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xin Huang
- School of Physical Education and Health, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Gang Lu
- Department of Acupuncture-Moxibustion and Tuina, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Huashan Pan
- School of Physical Education and Health, Guangzhou University of Chinese Medicine, Guangzhou, China
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Zhang R, Ni Z, Wei M, Cui Y, Zhou H, Di D, Wang Q. Composite dietary antioxidant intake and osteoporosis likelihood in premenopausal and postmenopausal women: a population-based study in the United States. Menopause 2023; 30:529-538. [PMID: 36944153 DOI: 10.1097/gme.0000000000002173] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE Osteoporosis is a skeletal disease characterized by low bone mass, reduced bone strength, and increased fracture risk. We aimed to investigate the association between combined dietary antioxidant intake and the likelihood of osteoporosis in premenopausal and postmenopausal women, based on data from the National Health and Nutrition Examination Survey. METHODS Nutrient intake data were obtained using two 24-hour recalls. Composite dietary antioxidant index (CDAI), which refers to the intake amounts of β-carotene, vitamin A, vitamin C, vitamin E, selenium, zinc, copper, and iron, was then constructed. Prevalent osteoporosis was defined according to bone mineral density T scores of ≤ -2.5 and self-reports. Multiple logistic and Poisson regression models were used for association analyses. RESULTS A total of 3,418 participants (1,157 premenopausal and 2,261 postmenopausal women) 40 years or older were included, 776 (22.70%) of whom had prevalent osteoporosis. In terms of individual nutrients, postmenopausal women in the highest CDAI quartiles for dietary β-carotene, vitamin A, vitamin C, and iron intakes had a low likelihood of osteoporosis. Regarding the CDAI-osteoporosis association, postmenopausal women in the highest quartile were less likely to have osteoporosis (OR Q3 vs Q1 , 0.64; 95% CI, 0.43-0.96; OR Q4 vs Q1 , 0.56; 95% CI, 0.35-0.89; P for trend = 0.013), after controlling for covariates. CONCLUSIONS CDAI was negatively associated with the likelihood of osteoporosis in postmenopausal women. Our findings suggest that the combined intake of antioxidant nutrients can help reduce the likelihood of osteoporosis in women.
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Affiliation(s)
- Ruyi Zhang
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zemin Ni
- Women and Children Medical Center for Jiang-an District, Wuhan, China
| | - Muhong Wei
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Cui
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haolong Zhou
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dongsheng Di
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qi Wang
- From the MOE Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Cui A, Xiao P, Fan Z, Zeng Y, Wang H, Zhuang Y. Associations between vitamin E status and bone mineral density in children and adolescents aged 8-19 years: Evidence based on NHANES 2005-2006, 2017-2018. PLoS One 2023; 18:e0283127. [PMID: 36928218 PMCID: PMC10019693 DOI: 10.1371/journal.pone.0283127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023] Open
Abstract
INTRODUCTION Bone mineral density (BMD) in adolescence is a crucial determinant in osteoporosis and fragility fractures in older age. Vitamin E is the most abundant lipid-soluble antioxidant present in the blood. However, the association of vitamin E status with BMD in children and adolescents remains unclear. METHODS We first measured the association of vitamin E status (serum α- and γ tocopherol) with BMD in children and adolescents with the National Health and Nutrition Examination Survey (NHANES). Multiple linear regression models were performed to evaluate their relationship after adjusting for a large range of covariates. Stratified analyses and interaction tests were used to explore their effects on different genders, ages, and races/ethnicities. RESULTS 13,606 children and adolescents from NHANES (2005-2006, 2017-2018) were included in our analysis. Compared with the lowest α-tocopherol quartile, individuals in the highest α-tocopherol quartile are likelier to be Non-Hispanic White and have a higher value of poverty income ratio (PIR). They have a lower value of serum phosphorus and lumbar spine BMD. Every 1umol/L increase in serum α- and γ- tocopherol, the lumbar spine BMD decreased by -0.0016 and -0.0068 g/cm2. Compared with the lowest quartile serum α- and γ- tocopherol concentration, individuals in the highest quartile have a -0.0223 and -0.0329 g/cm2 lower mean BMD, respectively. Interaction effects suggest that the negative effect is more prominent among female youth, individuals aged 8-13 years, non-Hispanic whites, Mexican Americans, and non-Hispanic blacks. CONCLUSIONS Our study indicates serum α- and γ-tocopherol are negatively correlated with lumbar BMD. Age, gender, and race may have a modifying effect on this relationship. Our study has an important clinical implication. A higher vitamin E status for children and adolescents could not improve BMD, even decrease BMD. More prospective research with stronger evidence is needed to verify our findings and their underlying mechanisms.
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Affiliation(s)
- Aiyong Cui
- Department of Orthopaedics, Honghui Hospital, Xi’an Jiao Tong University, Xi’an, China
| | - Peilun Xiao
- Department of Orthopaedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Zhiqiang Fan
- Department of Orthopaedics, Honghui Hospital, Xi’an Jiao Tong University, Xi’an, China
| | - Yuan Zeng
- Department of Orthopaedics, Honghui Hospital, Xi’an Jiao Tong University, Xi’an, China
| | - Hu Wang
- Department of Orthopaedics, Honghui Hospital, Xi’an Jiao Tong University, Xi’an, China
- * E-mail: (HW); (YZ)
| | - Yan Zhuang
- Department of Orthopaedics, Honghui Hospital, Xi’an Jiao Tong University, Xi’an, China
- * E-mail: (HW); (YZ)
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Cao Z, Liu W, Bi B, Wu H, Cheng G, Zhao Z. Isoorientin ameliorates osteoporosis and oxidative stress in postmenopausal rats. PHARMACEUTICAL BIOLOGY 2022; 60:2219-2228. [PMID: 36382865 PMCID: PMC9673777 DOI: 10.1080/13880209.2022.2142614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/12/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
CONTEXT Isoorientin has many biological activities, including antioxidant, anti-inflammatory, antitumor. However, the effect of isoorientin on postmenopausal osteoporosis remains unclear. OBJECTIVE To evaluate the effect of isoorientin on postmenopausal osteoporosis. MATERIALS AND METHODS Sprague-Dawley rats were divided into five groups (n = 5): sham, model, 17-β-oestradiol (E2, 10 μg/kg/day), low-dose isoorientin (L-Iso, 50 mg/kg), and high-dose isoorientin (H-Iso, 100 mg/kg). The rats were ovariectomized, treated by gavage daily for 12 weeks, and serum and femur samples were collected. Bone mineral density, bone metabolism, and oxidative stress were assessed. H&E staining, immunohistochemistry, and western blotting were employed. RESULTS Isoorientin improved the bone mineral density of the lumbar vertebrae (2.01 ± 0.05 g/cm3 in H-Iso group vs. 1.74 ± 0.07 g/cm3 in model group) and femur (1.46 ± 0.06 g/cm3 vs. 1.19 ± 0.03 g/cm3), increased the trabecular bone number (1.97 ± 0.03 vs. 1.18 ± 0.13) and thickness (0.27 ± 0.02 vs. 0.16 ± 0.03 mm). Isoorientin decreased the separation degree of trabecular bone, ameliorated bone histomorphology changes, and significantly improved the mechanical properties. Isoorientin diminished MDA (by 60%) and increased SOD (by 49.2%), and GSH-Px (by 159%) activity. Furthermore, osteoprotegerin (OPG), nuclear factor erythroid 2-like 2 (Nrf2), haem oxygenase (HO-1), NAD(P)H quinone dehydrogenase 1(NQO1), and oestrogen receptor 1(ESR1) protein expression increased, while receptor activator of nuclear factor-κB ligand (RANKL) protein expression decreased after treatment. CONCLUSIONS Isoorientin ameliorates osteoporosis via upregulating OPG and Nrf2/ARE signalling, suggesting isoorientin maybe a potential therapeutic drug for PMOP.
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Affiliation(s)
- Zhilin Cao
- Department of Sports Medicine, Yantaishan Hospital, Yantai, China
| | - Wei Liu
- Department of Pathophysiology, Binzhou Medical University, Yantai, China
| | - Benjun Bi
- Department of Hand and Foot Surgery, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hao Wu
- Department of Sports Medicine, Yantaishan Hospital, Yantai, China
| | - Gong Cheng
- Department of Sports Medicine, Yantaishan Hospital, Yantai, China
| | - Zhongyuan Zhao
- Department of Articulation surgery, Yantaishan Hospital, Yantai, China
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Vitamin A Nutritional Status Is a Key Determinant of Bone Mass in Children. Nutrients 2022; 14:nu14214694. [PMID: 36364956 PMCID: PMC9653699 DOI: 10.3390/nu14214694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/24/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
The bone mass increases that occur during the period of childhood are of great significance for maximizing the peak bone mass in adults and preventing for osteoporosis. Studies have reported that VA can improve the bone health in adults. Moreover, limited studies have assessed such associations in children. In this cross-sectional study including 426 children, we assessed the children’s plasma retinol concentration by liquid chromatography–mass spectrometry and the dietary intake of VA and carotenoids using a structured Food Frequency Questionnaire. Their bone mineral content and bone mineral density (BMD) were measured using dual-energy X-ray absorptiometry. After adjusting for potential confounders, the restricted cubic spline revealed an inverted U-shaped association between plasma retinol concentration and BMD; the estimated effects on the TBLH BMD per μmol/L increase in the plasma retinol concentration were 1.79 × 10−2 g/cm2 below 1.24 μmol/L and −5.78 × 10−3 g/cm2 above this point (p for non-linearity = 0.046). A multiple linear regression analysis revealed a positive association between the plasma retinol concentration and the TBLH BMC (β = 1.89, 95% CI: 1.64 × 10−1–3.62, p = 0.032). In conclusion, an appropriate plasma retinol concentration and greater intakes of dietary VA and β-carotene may enhance the bone mineral status of children who are aged 6–9 years.
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Vitamin E enriched diet increases the rate of orthodontic tooth movement. Am J Orthod Dentofacial Orthop 2022; 161:687-697.e3. [PMID: 35012806 DOI: 10.1016/j.ajodo.2020.10.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 10/01/2020] [Accepted: 10/01/2020] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Vitamin E is a popular antioxidant suggested to affect bone turnover. However, the effects of a vitamin E enriched diet on the rate of tooth movement are unknown. Therefore, this study aimed to evaluate tooth movement in rats receiving a vitamin E enriched diet. In addition, we examined bone remodeling in experimental and control rats. METHODS Thirty-two 6-week-old male rats were divided into 4 groups: (1) group 1 (n = 8): orthodontic tooth movement (OTM) for 4 days + regular diet; (2) group 2 (n = 8): OTM for 14 days + regular diet; (3) group 3 (n = 8): OTM for 4 days + vitamin E diet; and (4) group 4 (n = 8) - OTM for 14 days + vitamin E diet. Maxillary alveolar bones and femurs of rats were analyzed by microcomputed tomography and histology. RESULTS Rats fed a vitamin E diet presented an increased OTM rate at days 4 and 14. We found an increased number of osteoclasts and decreased bone volume in the vitamin E diet group at day 14 of OTM. In addition, there was increased expression of the microphthalmia-associated transcription factor in the alveolar bone of the vitamin E diet group. In contrast, there was no difference in bone remodeling in femurs or alveolar bone at the control side. CONCLUSIONS We found that an enriched vitamin E diet increases the rate of OTM in rats, suggesting that vitamin E may be useful as an avenue to accelerate OTM.
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Xu W, Li Y, Feng R, He P, Zhang Y. γ-Tocotrienol induced the proliferation and differentiation of MC3T3-E1 cells through the stimulation of the Wnt/β-catenin signaling pathway. Food Funct 2022; 13:398-410. [PMID: 34908071 DOI: 10.1039/d1fo02583j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
γ-Tocotrienol (γ-T3), an isoprenoid phytochemical, has shown the promotion of osteoblast proliferation and differentiation in our previous study. In this study, its underlying mechanism was investigated through regulating the Wnt/β-catenin signaling pathway in MC3T3-E1 cells. Comparative experiment results showed that γ-T3, not α-tocopherol (α-TOC) increased more significantly the viability and differentiation in MC3T3-E1 cells. After that, the cells were incubated with 10 mM LiCl, or 4 μM γ-T3 with or without 1 μM XAV-939. γ-T3 at 4 μM stimulated the Wnt/β-catenin signaling pathway by increasing the expression and nuclear accumulation of β-catenin, and the expressions of their downstream factors, such as cyclin-D1, c-Myc, BMP2 and BMP-4 in MC3T3-E1 cells. γ-T3 not only upregulated the viability, induced G0/G1 to the S phase, and promoted the expressions of PCNA (Proliferating Cell Nuclear Antigen) and Ki-67, but also increased ALP activity and the expressions of ON, OPN and OCN. Moreover, the effects of γ-T3 on the MC3T3-E1 cells resembled the actions of LiCl, an activator of the Wnt/β-catenin signaling pathway. Notably, all these effects of γ-T3 on the MC3T3-E1 cells were completely blocked by the Wnt/β-catenin signaling pathway inhibitor XAV-939. Our data demonstrated that γ-T3 can target β-catenin to enhance the Wnt/β-catenin signaling pathway, which led to increased expressions of the downstream cell proliferation and cell cycle-associated (cyclin D1 and c-myc), and cell differentiation-associated (BMP-2 and BMP-4) target genes, and ultimately promoted MC3T3-E1 cell proliferation and differentiation. Therefore, γ-T3 may be a potential agent to prevent and reverse osteoporosis due to its safety and powerful abilities of osteogenesis.
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Affiliation(s)
- Weili Xu
- Innovation Research Center for Special Food-Medicine and Biochemical Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Nangang District, Harbin, China.
| | - Yutong Li
- Innovation Research Center for Special Food-Medicine and Biochemical Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Nangang District, Harbin, China.
| | - Rennan Feng
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, 157 Baojian Road, Nangang District, Harbin, China
| | - Pan He
- Innovation Research Center for Special Food-Medicine and Biochemical Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Nangang District, Harbin, China.
| | - Yuqi Zhang
- Innovation Research Center for Special Food-Medicine and Biochemical Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 Xidazhi Street, Nangang District, Harbin, China.
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Yang K, Miao H, Zhao R, Wu X, Liu B, Zheng S, Huang D, Ping Z. Association between serum uric acid and bone mineral density in patients with type 2 diabetes: A 6-year longitudinal study in China. Medicine (Baltimore) 2021; 100:e25733. [PMID: 33907167 PMCID: PMC8084059 DOI: 10.1097/md.0000000000025733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/04/2021] [Indexed: 11/25/2022] Open
Abstract
The relationship between serum uric acid (UA) and bone mineral density (BMD) has been proposed by several researchers. However, there has been no consensus regarding the relationships among serum UA, diabetes, and BMD. The aim of this study is to investigate the association between UA, BMD, and at least osteopenia in type 2 diabetes patients.This research was a longitudinal study performed at Xiao-Tang-Shan Hospital in Beijing. Type 2 diabetes diagnosis was consistent with the WHO standard classification. Participants with osteopenia or osteoporosis documented by dual-energy X-ray absorptiometry were defined as having "at least osteopenia." A generalized additive model and multivariable logistic regressions were performed to explore the relationship between serum UA and at least osteopenia. Receiver operating characteristic analysis was conducted. Propensity score matching was used to verify the correctness of the cutoff point.In total, 3476 type 2 diabetes patients free of any osteopenia-related diseases were recruited in 2012 and followed up to 2018. The general proportions of patients with at least osteopenia in 2018 was 16.46% (572/3476). Serum UA was negatively associated with BMD stratified by sex, age group, and BMI level. Setting the first quartile as the reference, the risk of at least osteopenia in the fourth quartile was significant among all patients (odds ratio [OR]: 0.75; 95% confidence interval [CI]: 0.57, 0.98) and specifically in females (OR: 0.79; 95% CI: 0.43, 0.97), patients aged over 50 years (OR: 0.79; 95% CI: 0.60, 0.97) and patients with a BMI greater than 25 (OR: 0.74; 95% CI: 0.47, 0.97). The optimal cutoff point for the serum UA level to distinguish at least osteopenia in diabetic patients was 395 μmol/L.Serum UA concentration is negatively associated with the occurrence of at least osteopenia in Chinese patients with type 2 diabetes.
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Affiliation(s)
- Kun Yang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Xicheng district
| | - Huilei Miao
- Department of Clinical Medicine, Peking Union Medical College, Dongcheng district
| | - Ruijie Zhao
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences
| | - Xiling Wu
- Department of Traditional Chinese Medicine, Xuanwu Hospital, Capital Medical University, Xicheng district
| | - Bo Liu
- Beijing Xiao-Tang-Shan Hospital, Xiao-Tang-Shan Town, Changping District, Beijing, China
| | - Shuiqiao Zheng
- Beijing Xiao-Tang-Shan Hospital, Xiao-Tang-Shan Town, Changping District, Beijing, China
| | - Dan Huang
- Beijing Xiao-Tang-Shan Hospital, Xiao-Tang-Shan Town, Changping District, Beijing, China
| | - Zhao Ping
- Beijing Xiao-Tang-Shan Hospital, Xiao-Tang-Shan Town, Changping District, Beijing, China
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Mulligan AA, Hayhoe RPG, Luben RN, Welch AA. Positive Associations of Dietary Intake and Plasma Concentrations of Vitamin E with Skeletal Muscle Mass, Heel Bone Ultrasound Attenuation and Fracture Risk in the EPIC-Norfolk Cohort. Antioxidants (Basel) 2021; 10:antiox10020159. [PMID: 33499166 PMCID: PMC7911901 DOI: 10.3390/antiox10020159] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/13/2021] [Accepted: 01/17/2021] [Indexed: 02/02/2023] Open
Abstract
The prevalence of sarcopenia, frailty and fractures is increasing. Prevention options are limited, but dietary factors including vitamin E have the potential to confer some protection. This study investigated cross-sectional associations between dietary and plasma concentrations of vitamin E with indices of skeletal muscle mass (SMM) (n = 14,179 and 4283, respectively) and bone density (n = 14,694 and 4457, respectively) and longitudinal fracture risk (n = 25,223 and 7291, respectively) in European Prospective Investigation Into Cancer and Nutrition (EPIC)-Norfolk participants, aged 39-79 years at baseline. Participants completed a health and lifestyle questionnaire, a 7-day diet diary (7dDD) and had anthropometric measurements taken. Fat-free mass (as a SMM proxy) was measured using bioimpedance and bone density was measured using calcaneal broadband ultrasound attenuation (BUA) and incident fractures over 18.5 years of follow-up. Associations between indices of SMM, BUA and fracture risk were investigated by quintiles of dietary vitamin E intake or plasma concentrations. Positive trends in SMM indices and BUA were apparent across dietary quintiles for both sexes, with interquintile differences of 0.88%-1.91% (p < 0.001), and protective trends for total and hip fracture risk. Circulating plasma α- and γ-tocopherol results matched the overall dietary findings. Dietary vitamin E may be important for musculoskeletal health but further investigation is required to fully understand the relationships of plasma tocopherols.
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Affiliation(s)
- Angela A. Mulligan
- Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge, Cambridgeshire CB1 8RN, UK;
- NIHR BRC Diet, Anthropometry and Physical Activity Group, MRC Epidemiology Unit, University of Cambridge, Cambridgeshire CB2 0AH, UK
- Correspondence: or
| | - Richard P. G. Hayhoe
- Department of Epidemiology and Public Health, Norwich Medical School, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK; (R.P.G.H.); (A.A.W.)
| | - Robert N. Luben
- Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge, Cambridgeshire CB1 8RN, UK;
| | - Ailsa A. Welch
- Department of Epidemiology and Public Health, Norwich Medical School, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich NR4 7TJ, UK; (R.P.G.H.); (A.A.W.)
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Ma YS, Hou ZJ, Li Y, Zheng BB, Wang JM, Wang WB. Unveiling the Pharmacological Mechanisms of Eleutheroside E Against Postmenopausal Osteoporosis Through UPLC-Q/TOF-MS-Based Metabolomics. Front Pharmacol 2020; 11:1316. [PMID: 32982736 PMCID: PMC7479840 DOI: 10.3389/fphar.2020.01316] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 08/07/2020] [Indexed: 12/17/2022] Open
Abstract
Postmenopausal osteoporosis (PMOP) is a common metabolic bone disease in postmenopausal women in the Worldwide, and seriously affects the quality of life of middle-aged and elderly women. Therefore, there is an urgent need to discover a highly effective drug for PMOP treatment. In this study, ultra-high performance liquid tandem quadrupole time-of-flight mass spectrometry (UPLC-Q/TOF-MS) was used to analyze the urine metabolic profiling and potential biomarkers, the relevant metabolic network of PMOP rats, and further to evaluate the intervention effect of Eleutheroside E (EE) against PMOP. Using multivariate statistical analysis combined with UPLC-Q/TOF-MS, a total of 27 biomarkers were identified, which related with 16 metabolic pathways, mainly involving steroidogenesis, beta oxidation of very long chain fatty acids, glutathione metabolism, carnitine synthesis, estrone metabolism, oxidation of branched chain fatty acids, etc. After treatment of EE, these biomarkers were markedly regulated, mainly involving steroid hormone biosynthesis, arachidonic acid metabolism, primary bile acid biosynthesis, indicating that EE had the therapeutic effect on PMOP. This study identified the potential urine metabolic markers and related metabolic pathways of the PMOP, explained the metabolic effect and pharmacological mechanisms of EE against PMOP, and provided a basis for the pharmacological study of EE.
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Affiliation(s)
- Yong-Sheng Ma
- The Second Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhan-Jiang Hou
- The Emergency Surgery Department, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - You Li
- The Second Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Beng-Beng Zheng
- The Second Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jia-Ming Wang
- The Second Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wen-Bo Wang
- The Third Department of Orthopedics, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Odai T, Terauchi M, Hirose A, Kato K, Miyasaka N. Bone Mineral Density in Premenopausal Women Is Associated with the Dietary Intake of α-Tocopherol: A Cross-Sectional Study. Nutrients 2019; 11:nu11102474. [PMID: 31618965 PMCID: PMC6835764 DOI: 10.3390/nu11102474] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 12/19/2022] Open
Abstract
This study aimed to investigate the relationship between the consumption of various nutrients and bone mineral density (BMD) in middle-aged women. This cross-sectional survey was conducted based on the clinical records of 157 women aged 38–76. Their lumbar spine BMD was measured with dual-energy X-ray absorptiometry and dietary habits were assessed with the brief-type self-administered diet history questionnaire. Participants were divided into premenopausal (n = 46) and postmenopausal (n = 111) groups and the correlation between the BMD Z-score (Z-score) and the intakes of 43 nutrients was investigated separately for each group. In premenopausal women, the daily intake of ash, calcium, and α-tocopherol was positively correlated with the Z-score (Pearson’s correlation coefficient, R = 0.31, 0.34, 0.33, p = 0.037, 0.020, 0.027, respectively). When dividing the consumption of ash, calcium, and α-tocopherol into low, middle, and high tertiles, the Z-score significantly differed only between the α-tocopherol tertiles. After adjustment for age, body mass index, and lifestyle factors, daily intake of α-tocopherol remained significantly associated with the Z-score (regression coefficient = 0.452, p = 0.022). No nutrient was found to be significantly correlated with the Z-score in postmenopausal women. Increase in the intake of α-tocopherol could help maintain bone mass in premenopausal women.
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Affiliation(s)
- Tamami Odai
- Department of Obstetrics and Gynecology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
| | - Masakazu Terauchi
- Department of Women's Health, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
| | - Asuka Hirose
- Department of Obstetrics and Gynecology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
- Department of Women's Health, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
| | - Kiyoko Kato
- Department of Women's Health, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
| | - Naoyuki Miyasaka
- Department of Obstetrics and Gynecology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo, Tokyo 113-8510, Japan.
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Skřivan M, Englmaierová M, Vít T, Skřivanová E. Hempseed increases gamma-tocopherol in egg yolks and the breaking strength of tibias in laying hens. PLoS One 2019; 14:e0217509. [PMID: 31136626 PMCID: PMC6538247 DOI: 10.1371/journal.pone.0217509] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/13/2019] [Indexed: 01/01/2023] Open
Abstract
The effect of hempseed in the diet of laying hens was evaluated at 0, 30, 60 and 90 g/kg concentrations. The aim of the study was to determine the effect of dietary treatment on the performance of hens, the physical characteristics of egg quality, the concentrations of α- and γ-tocopherol and the carotenoid and cholesterol contents of egg yolks, together with the breaking strength of tibial measurements. In light of the obtained results, our study aimed to address the optimal dietary level of hempseed in laying hen diets. Lohmann Brown hens (n = 240) were divided into 4 dietary treatment groups (6 cages per treatment) with 10 hens per cage. The experiment lasted for 12 weeks. The level of nutrients in all diets (wheat-corn) was well balanced. The dietary metabolisable energy was adjusted using rapeseed oil. The addition of 30 g/kg of hempseed to the diet significantly increased (P˂0.001) egg production and egg mass. Alpha-tocopherol increased significantly (P = 0.002) only in the case of the 60 g/kg hempseed level (101 mg/kg dry matter (DM) versus 83 mg/ kg DM in the control group). In contrast, the level of γ-tocopherol increased gradually from 11 mg/kg DM in the control to 29, 39 and 43 mg/kg DM at the 30, 60 and 90 g/kg levels of dietary hempseed, respectively. The concentrations of beta carotene, zeaxanthin and lutein in egg yolks were not influenced by the dietary treatment. Hempseed at 90 g/kg (P = 0.036) decreased egg shell thickness without affecting its strength. The addition of hempseed decreased (P˂0.001) the cholesterol concentration in the egg yolks in all experimental groups. The addition of 30, 60 and 90 g hempseed increased (P˂0.001) the breaking strength of the tibia to 354, 352 and 350 N, respectively, compared to 297 N in the control group. The highest level of hempseed in the diet positively influenced the Ca concentration in the tibia (P = 0.021). The concentration of P in the tibia was negatively affected in the 60 to 90 g/kg hempseed treatments (P˂0.001). Eggs are a significant source of α-tocopherol. Based on our results, there is a possibility for enrichment of egg yolks with γ-tocopherol, with all of its associated health benefits, by the addition of hempseed to the diet of laying hens. Another significant benefit of hempseed is its effect on the breaking strength of the tibia, which can help with crucial problems in the commercial breeding of laying hens.
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Affiliation(s)
- Miloš Skřivan
- Department of Nutritional Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhrineves, Czech Republic
- * E-mail:
| | - Michaela Englmaierová
- Department of Nutritional Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhrineves, Czech Republic
| | - Tomáš Vít
- Department of Nutritional Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhrineves, Czech Republic
| | - Eva Skřivanová
- Department of Nutritional Physiology and Animal Product Quality, Institute of Animal Science, Prague-Uhrineves, Czech Republic
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Nazrun Shuid A, Das S, Mohamed IN. Therapeutic effect of Vitamin E in preventing bone loss: An evidence-based review. INT J VITAM NUTR RES 2019; 89:357-370. [PMID: 30856080 DOI: 10.1024/0300-9831/a000566] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The present review explored the anti-inflammatory and immunomodulatory properties of vitamin E, which has protective action against osteoporosis. A systematic review of the literature was conducted to identify the published bone studies on vitamin E. The studies included inflammatory or immunology-related parameters. Medline and Scopus databases were searched for relevant studies published from 2005 till 2015. Research articles published in English and confined to the effect of vitamin E on bone were included. It is pertinent to mention that these studies took into consideration inflammatory or immunology parameters including interleukin (IL)-1, IL-6, receptor activator of nuclear factor kappa-B ligand (RANKL), inducible nitric oxide synthases (iNOS), serum amyloid A (SAA), e-selection and high-sensitivity C-reactive protein (hs-CRP). An extended literature search yielded 127 potentially relevant articles with seven articles meeting the inclusion and exclusion criteria. Another recent article was added with the total number accounting to eight. All these included literature comprised five animal studies, one in-vitro study and two human studies. These studies demonstrated that vitamin E, especially tocotrienol, was able to alleviate IL-1, IL-6, RANKL, iNOS and hs-CRP levels in relation to bone metabolism. In conclusion, vitamin E exerts its anti-osteoporotic actions via its anti-inflammatory and immunomodulatory effects.
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Affiliation(s)
- Ahmad Nazrun Shuid
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre
| | - Srijit Das
- Department of Anatomy, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre
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Association between Dietary Carotenoid Intake and Bone Mineral Density in Korean Adults Aged 30-75 Years Using Data from the Fourth and Fifth Korean National Health and Nutrition Examination Surveys (2008-2011). Nutrients 2017; 9:nu9091025. [PMID: 28926945 PMCID: PMC5622785 DOI: 10.3390/nu9091025] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 12/27/2022] Open
Abstract
Age-related bone loss is a major public health problem. This cross-sectional study examined the association between the dietary intake of carotenoids and bone mineral density (BMD). Data from 8022 subjects (3763 males and 4259 females) aged 30–75 years included in the Korean National Health and Nutrition Examination Survey (2008–2011) were analyzed. BMD was measured by dual-energy X-ray absorptiometry. Intake of carotenoids was estimated using 24-h dietary recall. In multiple linear analysis, after adjusting for covariates, lutein + zeaxanthin and β-cryptoxanthin intake was positively associated with total hip BMD in males and premenopausal women respectively, while β-carotene intake was positively correlated with femoral neck, total hip, and whole-body BMD in postmenopausal women. Postmenopausal women in the highest quintile of daily β-carotene intake, showed a lower risk of osteopenia at the lumbar spine (odds ratio (OR): 0.35, 95% CI: 0.16–0.79, P for trend = 0.009) than those in the lowest quintile, after adjusting for covariates. Daily β-cryptoxanthin intake was significantly associated with a lower risk of osteopenia at the total hip (OR per 1 mg/day increase: 0.76; 95% CI: 0.59–0.97), and lumbar spine (OR per 1 mg/day increase: 0.79; 95% CI: 0.70–0.89) in postmenopausal women. These results suggest that the dietary intake of β-carotene and β-cryptoxanthin may have a positive effect on bone health.
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High doses of vitamin C plus E reduce strength training-induced improvements in areal bone mineral density in elderly men. Eur J Appl Physiol 2017; 117:1073-1084. [DOI: 10.1007/s00421-017-3588-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 03/11/2017] [Indexed: 12/14/2022]
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Zhang J, Hu X, Zhang J. Associations between serum vitamin E concentration and bone mineral density in the US elderly population. Osteoporos Int 2017; 28:1245-1253. [PMID: 27909782 DOI: 10.1007/s00198-016-3855-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/22/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED Mixed findings regarding effects of vitamin E on bone metabolism existed. We were the first to find a negative association between serum α-tocopherol concentration and bone mineral density in the US elderly population. Using vitamin E supplement as α-tocopherol to promote bone health was not warranted at this time. INTRODUCTION The aim of the study is to examine the associations between serum vitamin E (α-tocopherol and γ-tocopherol) status and bone mineral density (BMD) among the US elderly population. METHODS We used data from the National Health and Nutrition Examination Survey (NHANES) 2005-2006. This cross-sectional study finally included 989 subjects who were not having liver diseases, kidney diseases, rheumatoid arthritis, or cancers; were not treated for osteoporosis; and were not taking steroids or female hormones. Multivariable linear regression models were employed to examine the associations between serum vitamin E (α-tocopherol and γ-tocopherol) concentration and BMDs of total spine and femoral neck after adjusting for covariates and potential confounders. RESULTS Significant differences in serum α-tocopherol and γ-tocopherol levels, dietary intake of vitamin E as α-tocopherol, and BMDs of total spine and femoral neck were presented between male and female participants. Serum α-tocopherol and γ-tocopherol concentrations were found to be inversely correlated (r = -0.169, P < 0.001). In univariable linear models, significant negative associations between serum α-tocopherol and both total spine BMD (β = -0.0014, P = 0.002) and femoral neck BMD (β = -0.0017, P < 0.001) were found. Accounting for covariates, serum α-tocopherol level was negatively associated with femoral neck BMD (β = -0.0007, P = 0.028). CONCLUSIONS This study found a negative association between serum α-tocopherol concentration and femoral neck BMD in the US elderly population, suggesting a harmful effect of α-tocopherol on bone health. Future studies are warranted to further examine the dose-response relationships between individual vitamin E isomers and bone metabolism.
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Affiliation(s)
- J Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250355, China
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - X Hu
- School of Public Health, Yale University, New Haven, CT, USA
| | - J Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250355, China.
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Shen CL, Mo H, Yang S, Wang S, Felton CK, Tomison MD, Soelaiman IN. Safety and efficacy of tocotrienol supplementation for bone health in postmenopausal women: protocol for a dose-response double-blinded placebo-controlled randomised trial. BMJ Open 2016; 6:e012572. [PMID: 28011809 PMCID: PMC5223723 DOI: 10.1136/bmjopen-2016-012572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
INTRODUCTION Osteoporosis is a major health concern in postmenopausal women, and oxidative stress contributes to the development of bone loss. Cellular studies and ovariectomised rat model mimicking bone loss in postmenopausal women show the bone-protective effect of tocotrienols (TTs) with antioxidant capability. We aim to access the safety and efficacy of TT consumption for bone health in postmenopausal women. METHODS AND ANALYSIS In this 12-week randomised double-blinded placebo-controlled trial for the effects of dietary TT supplementation in postmenopausal women, postmenopausal women aged 45 years and older with at least 1 year after menopause and bone mineral density T-score at the spine and/or hip 2.5 or more below the reference values will be randomly assigned to 3 daily supplements: (1) placebo group receiving 860 mg olive oil, (2) low TT group receiving 430 mg of 70% pure TTs (containing 300 mg TT) and (3) high TT group receiving 860 mg of 70% pure TTs (600 mg TT). The primary outcome measure will be urinary N-terminal telopeptide. The secondary outcome measures will be serum bone-specific alkaline phosphatase, receptor activator of nuclear factor-κB ligand, osteoprotegerin, urinary 8-hydroxy-2'-deoxyguanosine and quality of life. At 0, 6 and 12 weeks, the following will be assessed: (1) primary and secondary outcome measures; (2) serum TT and tocopherol concentrations; (3) physical activity and food frequency questionnaires. Liver function will be monitored every 6 weeks for safety. 'Intent-to-treat' principle will be employed for data analysis. A model of repeated measurements with random effect error terms will be applied. Analysis of covariance, χ2 analysis and regression will be used for comparisons. ETHICS AND DISSEMINATION This study was approved by the Bioethics Committee of the Texas Tech University Health Sciences Center. The findings of this trial will be submitted to a peer-reviewed journal in the areas of bone or nutrition and international conferences. TRIAL REGISTRATION NUMBER NCT02058420; results.
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Affiliation(s)
- Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Huanbiao Mo
- Department of Nutrition, Byrdine F. Lewis School of Nursing and Health Professions, Georgia State University, Atlanta, Georgia, USA
| | - Shengping Yang
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas, USA
| | - Carol K Felton
- Department of Obstetrics and Gynecology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Michael D Tomison
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
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Johnson SA, Feresin RG, Soung DY, Elam ML, Arjmandi BH. Vitamin E suppresses ex vivo osteoclastogenesis in ovariectomized rats. Food Funct 2016; 7:1628-33. [PMID: 26923532 DOI: 10.1039/c5fo01066g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Postmenopausal osteoporosis may be caused, in part, by oxidative stress and inflammation. Vitamin E is a strong antioxidant which has been shown to have anti-inflammatory and bone-protective effects. The objective of this study was to investigate the effects of various doses of supplemental vitamin E on osteoclastogenesis in ovariectomized rats. Sixty 12-month-old female Sprague-Dawley rats were sham-operated (Sham) or ovariectomized (Ovx; 4 groups) and fed a diet containing basal levels of vitamin E (75 mg D-α tocopherol acetate per kg diet) for 220 days. Rats in three of the Ovx groups were given supplemental doses of vitamin E (300, 525, and 750 mg D-α tocopherol acetate per kg diet) for the last 100 days. Femoral bone marrow cells were isolated, cultured, and osteoclasts were counted and normalized to 1000 total bone marrow cells. Blood monocyte and lymphocyte counts were also determined. Osteoclast number was significantly higher in the Ovx control group and was suppressed by all three doses of vitamin E, although more effectively in the Ovx group that received 300 mg per kg diet vitamin E. Additionally, vitamin E suppressed the Ovx-induced increase in monocyte and lymphocyte production. The results of this study suggest that vitamin E supplementation suppresses osteoclastogenesis, possibly by inhibiting monocyte and lymphocyte production.
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Affiliation(s)
- Sarah A Johnson
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA and Center for Advancing Exercise and Nutrition Research on Aging (CAENRA), Florida State University, Tallahassee, FL 32306, USA
| | - Rafaela G Feresin
- Department of Dietetics and Nutrition, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Do Y Soung
- Columbia University Medical Center, Center of Orthopaedic Research, Department of Orthopaedic Surgery, New York, NY 10032, USA
| | - Marcus L Elam
- Department of Human Nutrition and Food Science, California State Polytechnic University, Pomona, CA 91768, USA
| | - Bahram H Arjmandi
- Center for Advancing Exercise and Nutrition Research on Aging (CAENRA), Florida State University, Tallahassee, FL 32306, USA and Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, FL 32306, USA.
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Yang TC, Duthie GG, Aucott LS, Macdonald HM. Vitamin E homologues α- and γ-tocopherol are not associated with bone turnover markers or bone mineral density in peri-menopausal and post-menopausal women. Osteoporos Int 2016; 27:2281-2290. [PMID: 27139906 DOI: 10.1007/s00198-015-3470-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 12/17/2015] [Indexed: 12/19/2022]
Abstract
UNLABELLED In a large cohort of older women, we investigated the relationships that different forms of vitamin E may have with bone turnover markers and bone mineral density (BMD). We found a suggestive positive association between serum alpha-tocopherol and BMD at the femoral neck, but no other clinically relevant observations. INTRODUCTION Vitamin E has anti-oxidant and anti-inflammatory properties hypothesized to benefit bone, but limited studies exist regarding its homologues. We examined circulating and dietary α- and γ-tocopherols with bone turnover markers (BTMs) and bone mineral density (BMD), and the role of inflammation in this relationship. METHODS We performed two cross-sectional analyses from two visits (V2, 1997-1999, n = 3883; V3, 2007-2011, n = 2130) of the Aberdeen Prospective Osteoporosis Screening Study. Dietary and supplement intakes by food frequency questionnaire were assessed at both visits. V2 BTMs (urinary free pyridinoline and deoxypyridinoline, serum N-terminal propeptide of type 1 collagen) and V3 serum α- and γ-tocopherols, inflammatory markers (interleukin-6 [IL-6], serum amyloid A [SAA], high-sensitivity C-reactive protein [hs-CRP], E-selectin) and dual X-ray absorptiometry BMD at the femoral neck and lumbar spine were collected. Food sources of tocopherol homologues and diet-serum correlations were determined. The relationships between dietary tocopherols and BTMs (V2), and dietary and serum tocopherols with BMD (V3) were examined by multivariable regression (adjusting for age, cholesterol, inflammatory markers, carotenoids, body mass index, physical activity level, alcohol intake, smoking status and national deprivation category). RESULTS Serum γ-tocopherol was associated with increasing concentrations of hs-CRP, SAA and E-selectin (P-trend all <0.0001), while α-tocopherol was associated with decreasing concentrations of IL-6 and hs-CRP (P-trend all <0.001). Controlling for covariates, serum α-tocopherol was positively associated with BMD at the femoral neck (β = 0.002, P = 0.04) among those not reporting vitamin E supplementation. CONCLUSION We did not find biologically meaningful results between dietary and tocopherol homologues with BTMs or BMD.
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Affiliation(s)
- T C Yang
- Natural Products Group, Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen, AB21 9SB, UK.
- School of Medicine and Dentistry, University of Aberdeen, Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK.
| | - G G Duthie
- Natural Products Group, Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen, AB21 9SB, UK
| | - L S Aucott
- School of Medicine and Dentistry, University of Aberdeen, Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
| | - H M Macdonald
- School of Medicine and Dentistry, University of Aberdeen, Health Sciences Building, Foresterhill, Aberdeen, AB25 2ZD, UK
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Hampson G, Edwards S, Sankaralingam A, Harrington DJ, Voong K, Fogelman I, Frost ML. Circulating concentrations of vitamin E isomers: Association with bone turnover and arterial stiffness in post-menopausal women. Bone 2015; 81:407-412. [PMID: 26271527 DOI: 10.1016/j.bone.2015.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 08/06/2015] [Accepted: 08/08/2015] [Indexed: 10/23/2022]
Abstract
The effects of vitamin E on cardiovascular and bone health are conflicting with beneficial and detrimental findings reported. To investigate this further, we carried out a cross-sectional study to determine the relationship between circulating concentrations of the 2 vitamin E isomers, α- and γ-tocopherol (TP) with bone turnover and arterial stiffness. Two hundred and seventy eight post-menopausal women with mean age [SD] 60.9 [6.0] years were studied. Fasting serum α-TP and γ-TP, bone turnover markers; procollagen type 1 amino-terminal propeptide (P1NP) and C-terminal telopeptide of type 1 collagen (CTX), parathyroid hormone (PTH), total cholesterol (TC) and triglycerides (TG) were measured. Pulse wave velocity (PWV) and central augmentation index (AI) as markers of arterial stiffness were also determined. A positive correlation was observed between α-TP and γ-TP (r=0.14, p=0.022). A significant negative association between α-TP and P1NP only was seen in multiple linear regression analysis following adjustment for serum TC and TG (p=0.016). In a full multi-linear regression model, following correction for age, years since menopause, smoking habits, alcohol intake, use of calcium supplements, BMI, PTH, serum calcium, and estimated glomerular filtration rate (eGFR), the association between α-TP and P1NP remained significant (p=0.011). We did not observe any significant association between γ-TP or α-TP/γ-TP ratio with P1NP or CTX. P1NP was significantly lower in subjects with α-TP concentrations of >30 μmol/L (α-TP >30 μmol/L; P1NP: 57.5 [20.7], α-TP<30 μmol/L; P1NP: 65.7 [24.9] μg/L, p=0.005). PWV was significantly associated with α-TP/γ-TP ratio (p=0.04) but not with serum α-TP or γ-TP in a full multi-linear regression model adjusting for serum lipids, age, and blood pressure. The data suggest that high serum concentrations of α-TP may have a negative effect on bone formation. The balance of α-TP and γ-TP may be important in maintaining arterial compliance. Longitudinal studies are needed to investigate the impact of the vitamin E isomers on bone and cardiovascular health.
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Affiliation(s)
- G Hampson
- Department of Clinical Chemistry, Viapath, St Thomas' Hospital, London SE1 7 EH, UK; Osteoporosis Unit, King's College London, Division of Imaging Sciences and Biomedical Engineering, Guy's Campus, London SE1 9RT, UK.
| | - S Edwards
- Osteoporosis Unit, King's College London, Division of Imaging Sciences and Biomedical Engineering, Guy's Campus, London SE1 9RT, UK
| | - A Sankaralingam
- Department of Clinical Chemistry, Viapath, St Thomas' Hospital, London SE1 7 EH, UK
| | - D J Harrington
- Nutristasis Laboratory, Viapath, St Thomas' Hospital, London SE1 7EH, UK
| | - K Voong
- Nutristasis Laboratory, Viapath, St Thomas' Hospital, London SE1 7EH, UK
| | - I Fogelman
- Osteoporosis Unit, King's College London, Division of Imaging Sciences and Biomedical Engineering, Guy's Campus, London SE1 9RT, UK
| | - M L Frost
- Osteoporosis Unit, King's College London, Division of Imaging Sciences and Biomedical Engineering, Guy's Campus, London SE1 9RT, UK
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Association of dietary and serum vitamin E with bone mineral density in middle-aged and elderly Chinese adults: a cross-sectional study. Br J Nutr 2015; 115:113-20. [PMID: 26507315 DOI: 10.1017/s0007114515004134] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Previous studies have suggested that vitamin E (VE) may affect bone health, but the findings have been inconclusive. We examined the relationship between VE status (in both diet and serum) and bone mineral density (BMD) among Chinese adults. This community-based study included 3203 adults (2178 women and 1025 men) aged 40-75 years from Guangzhou, People's Republic of China. General and dietary intake information were collected using structured questionnaire interviews. The serum α-tocopherol (TF) level was quantified by reversed-phase HPLC. The BMD of the whole body, the lumbar spine and left hip sites (total, neck, trochanter, intertrochanter and Ward's triangle) were measured using dual-energy X-ray absorptiometry. In women, the dietary intake of VE was significantly and positively associated with BMD at the lumbar spine, total hip, intertrochanter and femur neck sites after adjusting for covariates (P(trend): 0·001-0·017). Women in quartile 3 of VE intake typically had the highest BMD; the covariate-adjusted mean BMD were 2·5, 3·06, 3·41 and 3·54% higher, respectively, in quartile 3 (v. 1) at the four above-mentioned sites. Similar positive associations were observed between cholesterol-adjusted serum α-TF levels and BMD at each of the studied bone sites (P(trend): 0·001-0·022). The covariate-adjusted mean BMD were 1·24-4·83% greater in quartile 4 (v. 1) in women. However, no significant associations were seen between the VE levels (dietary or serum) and the BMD at any site in men. In conclusion, greater consumption and higher serum levels of VE are associated with greater BMD in Chinese women but not in Chinese men.
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Effects of vitamin E on bone remodeling in perimenopausal women: Mini review. Maturitas 2014; 79:476-80. [DOI: 10.1016/j.maturitas.2014.08.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 08/29/2014] [Indexed: 01/06/2023]
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Ochi H, Takeda S. The Two Sides of Vitamin E Supplementation. Gerontology 2014; 61:319-26. [PMID: 25428288 DOI: 10.1159/000366419] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 08/05/2014] [Indexed: 11/19/2022] Open
Abstract
Vitamin E is a lipid-soluble antioxidant that inhibits lipid peroxidation by scavenging reactive oxygen species, and it is thought to protect against the aging process. Indeed, it is one of the most popular supplements in the US. However, recent studies have revealed that vitamin E has dual effects on the aging process. We discovered that α-tocopherol, the major form of vitamin E in the body, stimulates osteoclast fusion and bone resorption as well as induces an osteoporosis-like phenotype in rodents. Clinical intervention trials have also demonstrated that supplementation with vitamin E is neutral or even harmful for preventing age-related diseases in humans. Therefore, the role of vitamin E as an 'anti-ager' has been called into question. This review outlines the present understanding of the role of vitamin E in age-related disease prevention.
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Affiliation(s)
- Hiroki Ochi
- Department of Physiology and Cell Biology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Holvik K, Gjesdal CG, Tell GS, Grimnes G, Schei B, Apalset EM, Samuelsen SO, Blomhoff R, Michaëlsson K, Meyer HE. Low serum concentrations of alpha-tocopherol are associated with increased risk of hip fracture. A NOREPOS study. Osteoporos Int 2014; 25:2545-54. [PMID: 25062727 DOI: 10.1007/s00198-014-2802-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 07/01/2014] [Indexed: 11/25/2022]
Abstract
UNLABELLED We investigated the risk of hip fracture according to circulating alpha-tocopherol, a plant-derived substance with antioxidant properties, in community-dwelling older Norwegians. We found a linear increasing risk of hip fracture with lower serum alpha-tocopherol concentrations, with a 51% higher risk in the lowest compared to the highest quartile. INTRODUCTION Oxidative stress is a suggested contributing cause of osteoporosis and fractures. Vitamin E (α-tocopherol) has potent antioxidant properties in humans. The relationship between circulating α-tocopherol and fracture risk is not established. The aim of this study was to investigate the association between serum α-tocopherol concentrations and risk of hip fracture during up to 11 years of follow-up. METHODS We performed a case-cohort analysis among 21,774 men and women aged 65-79 years who participated in four community-based health studies in Norway 1994-2001. Serum α-tocopherol concentrations at baseline were determined in 1,168 men and women who subsequently suffered hip fractures (median follow-up 8.2 years) and in a random sample (n = 1,434) from the same cohort. Cox proportional hazard regression adapted for gender-stratified case-cohort data was performed. RESULTS Median (25, 75 percentile) serum α-tocopherol was 30.0 (22.6, 38.3) μmol/L, and it showed a linear inverse association with hip fracture: hazard ratio (HR) 1.11 (95% confidence interval (CI) 1.04-1.20) per 10-μmol/L decrease in serum α-tocopherol, adjusted for gender and study center. The lowest compared to the highest quartile conferred an HR of 1.51 (95% CI 1.17-1.95), adjusted for gender and study center. Adjustment for smoking, month of blood sample, BMI, education, physical inactivity, self-rated health, and serum 25-hydroxyvitamin D (25(OH)D) yielded similar results. Taking serum total cholesterol concentration into account attenuated the association somewhat: HR of hip fracture was 1.37 (95% CI 1.05-1.77) in first versus fourth quartile of serum α-tocopherol/total cholesterol ratio. CONCLUSIONS Low serum concentrations of α-tocopherol were associated with increased risk of hip fracture in older Norwegians.
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Affiliation(s)
- K Holvik
- Division of Epidemiology, Norwegian Institute of Public Health, P.O. Box 4404, Nydalen, 0403, Oslo, Norway,
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Abrahamsen B, Brask-Lindemann D, Rubin KH, Schwarz P. A review of lifestyle, smoking and other modifiable risk factors for osteoporotic fractures. BONEKEY REPORTS 2014; 3:574. [PMID: 25228987 DOI: 10.1038/bonekey.2014.69] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 07/08/2014] [Indexed: 12/25/2022]
Abstract
Although many strong risk factors for osteoporosis-such as family history, fracture history and age-are not modifiable, a number of important risk factors are potential targets for intervention. Thus, simple, non-pharmacological intervention in patients at increased risk of osteoporotic fractures could include reduction of excessive alcohol intake, smoking cessation, adequate nutrition, patient education, daily physical activity and a careful review of medications that could increase the risk of falls and fractures. There remains, however, an unmet need for high-quality intervention studies in most of these areas.
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Affiliation(s)
- Bo Abrahamsen
- Department of Medicine, Research Centre of Ageing and Osteoporosis, Glostrup Hospital , Copenhagen, Denmark ; Odense Patient Data Exploratory Network OPEN, Institute of Clinical Research, University of Southern Denmark , Odense, Denmark
| | | | - Katrine Hass Rubin
- Odense Patient Data Exploratory Network OPEN, Institute of Clinical Research, University of Southern Denmark , Odense, Denmark
| | - Peter Schwarz
- Department of Medicine, Research Centre of Ageing and Osteoporosis, Glostrup Hospital , Copenhagen, Denmark ; Faculty of Health Sciences, University of Copenhagen , Copenhagen, Denmark
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Chin KY, Ima-Nirwana S. The effects of α-tocopherol on bone: a double-edged sword? Nutrients 2014; 6:1424-41. [PMID: 24727433 PMCID: PMC4011043 DOI: 10.3390/nu6041424] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 02/22/2014] [Accepted: 02/28/2014] [Indexed: 12/18/2022] Open
Abstract
Recent studies have found conflicting evidence on the role of α-tocopherol (αTF) on bone health. This nonsystematic review aimed to summarize the current evidence on the effects of αTF on bone health from cell culture, animal, and human studies in order to clarify the role of αTF on bone health. Our review found that αTF exerted beneficial, harmful or null effects on bone formation cells. Animal studies generally showed positive effects of αTF supplementation on bone in various models of osteoporosis. However, high-dose αTF was possibly detrimental to bone in normal animals. Human studies mostly demonstrated a positive relationship between αTF, as assessed using high performance liquid chromatography and/or dietary questionnaire, and bone health, as assessed using bone mineral density and/or fracture incidence. Three possible reasons high dosage of αTF can be detrimental to bone include its interference with Vitamin K function on bone, the blocking of the entry of other Vitamin E isomers beneficial to bone, and the role of αTF as a prooxidant. However, these adverse effects have not been shown in human studies. In conclusion, αTF may have a dual role in bone health, whereby in the appropriate doses it is beneficial but in high doses it may be harmful to bone.
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Affiliation(s)
- Kok-Yong Chin
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia.
| | - Soelaiman Ima-Nirwana
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia.
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Chaganti RK, Tolstykh I, Javaid MK, Neogi T, Torner J, Curtis J, Jacques P, Felson D, Lane NE, Nevitt MC. High plasma levels of vitamin C and E are associated with incident radiographic knee osteoarthritis. Osteoarthritis Cartilage 2014; 22:190-6. [PMID: 24291351 PMCID: PMC3933364 DOI: 10.1016/j.joca.2013.11.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 11/01/2013] [Accepted: 11/15/2013] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous studies suggest that the antioxidants vitamins C and E may protect against development of knee osteoarthritis (OA). We examined the association of circulating levels of vitamin C and E with incident whole knee radiographic OA (WKROA). METHODS We performed a nested case-control study of incident WKROA in MOST, a cohort of 3,026 men and women aged 50-79 years with, or at high risk of, knee OA. Incident cases were knees without either tibiofemoral (TF) or patellofemoral (PF) OA at baseline that developed TF and/or PF OA by 30-month follow-up. Two control knees per case were selected from those eligible for WKROA that did not develop it. Vitamin C and E (alpha-tocopherol) assays were done on baseline supernatant plasma (PCA) and serum samples, respectively. We examined the association of gender-specific tertiles of vitamin C and E with incident WKROA using logistic regression with GEE, adjusting for age, gender, and obesity. RESULTS Subjects without WKROA at baseline who were in the highest tertile of vitamin C had a higher incidence of WKROA [adjusted OR = 2.20 (95% CI: 1.12-4.33); P-value = 0.021], with similar results for the highest tertile of vitamin E [adjusted OR = 1.89 (1.02-3.50); P-value = 0.042], compared to those in the lowest tertiles. P-values for the trend of vitamin C and E tertiles and incident WKROA were 0.019 and 0.030, respectively. CONCLUSIONS Higher levels of circulating vitamin C and E did not provide protection against incident radiographic knee OA, and may be associated with an increased risk of knee OA.
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Affiliation(s)
- R K Chaganti
- Division of Rheumatology, UCSF, San Francisco, CA, USA
| | - I Tolstykh
- Department of Epidemiology and Biostatistics, UCSF, San Francisco, CA, USA
| | - M K Javaid
- NIHR Musculoskeletal BRU, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, UK
| | - T Neogi
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA
| | - J Torner
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
| | - J Curtis
- Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - P Jacques
- USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - D Felson
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA, USA
| | - N E Lane
- Department of Medicine, University of California at Davis Medical School, Sacramento, CA, USA
| | - M C Nevitt
- Department of Epidemiology and Biostatistics, UCSF, San Francisco, CA, USA.
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Iwaniec UT, Turner RT, Smith BJ, Stoecker BJ, Rust A, Zhang B, Vasu VT, Gohil K, Cross CE, Traber MG. Evaluation of long-term vitamin E insufficiency or excess on bone mass, density, and microarchitecture in rodents. Free Radic Biol Med 2013; 65:1209-1214. [PMID: 24051180 PMCID: PMC3859709 DOI: 10.1016/j.freeradbiomed.2013.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/04/2013] [Accepted: 09/07/2013] [Indexed: 12/19/2022]
Abstract
High dietary α-tocopherol levels reportedly result in osteopenia in growing rats, whereas α-tocopherol deficiency in α-tocopherol transfer protein-knockout (α-TTP-KO) mice results in increased cancellous bone mass. Because osteoporosis is a disease associated primarily with aging, we hypothesized that age-related bone loss would be attenuated in α-TTP-KO mice. Cancellous and cortical bone mass and microarchitecture were assessed using dual-energy X-ray absorptiometry and micro-computed tomography in 2-year-old α-TTP-KO and wild-type (WT) male and female mice fed dl-α-tocopherol acetate. In contrast to our expectations, differences in cancellous bone were not detected between WT and α-TTP-KO mice of either gender, and α-TTP-KO males had lower (p<0.05) cortical bone mass than WT males. We therefore evaluated bone mass, density, and microarchitecture in proximal femur of skeletally mature (8.5-month-old) male Sprague-Dawley rats fed diets containing low (15 IU/kg diet), adequate (75 IU/kg diet), or high (500 IU/kg diet) dl-α-tocopherol acetate for 13 weeks. Low dietary α-tocopherol did not increase bone mass. Furthermore, no reductions in cancellous or cortical bone mass were detected with high dietary α-tocopherol. Failure to detect increased bone mass in aged α-TTP-KO mice or bone changes in skeletally mature rats fed either low or high levels of α-tocopherol does not support the hypothesis that α-tocopherol has a negative impact on bone mass, density, or microarchitecture in rodents.
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Affiliation(s)
- Urszula T Iwaniec
- Skeletal Biology Laboratory, Oregon State University, Corvallis, OR 97331, USA; Center for Healthy Aging Research, Oregon State University, Corvallis, OR 97331, USA
| | - Russell T Turner
- Skeletal Biology Laboratory, Oregon State University, Corvallis, OR 97331, USA; Center for Healthy Aging Research, Oregon State University, Corvallis, OR 97331, USA
| | - Brenda J Smith
- Department of Nutritional Sciences, College of Human Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Barbara J Stoecker
- Department of Nutritional Sciences, College of Human Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Allison Rust
- Skeletal Biology Laboratory, Oregon State University, Corvallis, OR 97331, USA
| | - Bo Zhang
- Biostatistics Core, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Vihas T Vasu
- Department of Internal Medicine, Genome and Biomedical Sciences Facility, University of California at Davis, Davis, CA 95616, USA
| | - Kishorchandra Gohil
- Department of Internal Medicine, Genome and Biomedical Sciences Facility, University of California at Davis, Davis, CA 95616, USA
| | - Carroll E Cross
- Department of Internal Medicine, Genome and Biomedical Sciences Facility, University of California at Davis, Davis, CA 95616, USA
| | - Maret G Traber
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
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Ahn SH, Lee SH, Kim BJ, Lim KH, Bae SJ, Kim EH, Kim HK, Choe JW, Koh JM, Kim GS. Higher serum uric acid is associated with higher bone mass, lower bone turnover, and lower prevalence of vertebral fracture in healthy postmenopausal women. Osteoporos Int 2013; 24:2961-70. [PMID: 23644878 DOI: 10.1007/s00198-013-2377-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 04/19/2013] [Indexed: 12/13/2022]
Abstract
UNLABELLED Higher serum uric acid (UA) was associated with higher bone mass, lower bone turnover, and lower prevalence of vertebral fracture in postmenopausal women. Furthermore, UA suppressed osteoclastogenesis and decreased production of reactive oxygen species in osteoclast precursors, indicating UA may have beneficial effects on bone metabolism as an antioxidant. INTRODUCTION UA is known to play a physiological role as an antioxidant, and oxidative stress has detrimental effects on bone metabolism. In the present study, we investigated the association of serum UA level with the osteoporosis-related phenotypes and its direct effect on bone-resorbing osteoclasts using in vitro systems. METHODS This is a large cross-sectional study, including 7,502 healthy postmenopausal women. Bone mineral density (BMD) and serum UA concentrations were obtained from all subjects. Data on bone turnover markers and lateral thoracolumbar radiographs were available for 1,023 and 6,918 subjects, respectively. An in vitro study investigated osteoclastogenesis and reactive oxygen species (ROS) levels according to UA treatment. RESULTS After adjusting for multiple confounders, serum UA levels were positively associated with BMD at all sites (all p < 0.001). Compared with the participants in the highest UA quartile, the odds for osteoporosis were 40 % higher in those in the lowest quartile. The serum UA levels were inversely related to both serum C-terminal telopeptide of type I collagen and osteocalcin levels (p < 0.001 and p = 0.004, respectively). Consistently, subjects with vertebral fracture had lower serum UA levels, compared with those without it (p = 0.009). An in vitro study showed that UA decreased osteoclastogenesis in a dose-dependent manner and reduced the production of ROS in osteoclast precursors. CONCLUSION These results provide epidemiological and experimental evidence that serum UA may have a beneficial effect on bone metabolism as an antioxidant in postmenopausal women.
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Affiliation(s)
- S H Ahn
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap2-Dong, Songpa-Gu, Seoul, 138-736, Republic of Korea
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Monfalouti HE, Charrouf Z, Hamdouchi AE, Labraimi H, Chafchaouni-Moussaoui I, Kartah B, Kari KE, Bensouda Y, Derouich A, Dodin S, Denhez C, Guillaume D, Agnaou H. Argan Oil and Postmenopausal Moroccan Women: Impact on the Vitamin E Profile. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Vitamin E supplements could be beneficial for postmenopausal women. To evaluate the effect of edible argan oil consumption on the antioxidant status of postmenopausal women, the vitamin E serum level of 151 menopausal women consuming either olive or argan oil was determined. Serum level of vitamin E was increased in the argan oil consumer group. Therefore, an argan oil-enriched diet can be recommended to help prevent some postmenopausal disorders.
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Affiliation(s)
- Hanae El Monfalouti
- Laboratoire de chimie des plantes, Université Mohammed V-Agdal, Faculty of Science, BP1014 Rabat, Morocco
- URCA-CNRS UMR6229, School of Medicine-Pharmacy, 51 Rue Cognacq Jay, 51100 Reims, France
| | - Zoubida Charrouf
- Laboratoire de chimie des plantes, Université Mohammed V-Agdal, Faculty of Science, BP1014 Rabat, Morocco
| | - Asma El Hamdouchi
- Unité Mixte de Recherche en Nutrition-Alimentation, Kenitra, Morocco
| | - Hanane Labraimi
- Unité Mixte de Recherche en Nutrition-Alimentation, Kenitra, Morocco
| | - Imane Chafchaouni-Moussaoui
- Laboratoire de Chimie et d'innovation Thérapeutique, Centre de Recherche d'Universiapolis, Bad el Madina, BP8143, Agadir, Morocco
| | - Badreddine Kartah
- Laboratoire de chimie des plantes, Université Mohammed V-Agdal, Faculty of Science, BP1014 Rabat, Morocco
| | - Khalid El Kari
- Unité Mixte de Recherche en Nutrition-Alimentation, Kenitra, Morocco
| | - Yahya Bensouda
- Faculté de Médecine et Pharmacie, Université Mohammed V, Soussi, Rabat, Morocco
| | - Abdelfettah Derouich
- Laboratoire de Recherche sur les Lipoprotéines et l'Athérosclérose. Faculté des Sciences Ben M'sik, Université Hassanll Mohammedia, Casablanca Morocco
| | - Sylvie Dodin
- Département d'obstétrique et de gynécologie, Université de Laval, Québec, Qc, G1V0A6 Canada
| | - Clément Denhez
- URCA-CNRS UMR6229, School of Medicine-Pharmacy, 51 Rue Cognacq Jay, 51100 Reims, France
| | - Dom Guillaume
- URCA-CNRS UMR6229, School of Medicine-Pharmacy, 51 Rue Cognacq Jay, 51100 Reims, France
| | - Hassan Agnaou
- Unité Mixte de Recherche en Nutrition-Alimentation, Kenitra, Morocco
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Effects of vitamin e on bone biomechanical and histomorphometric parameters in ovariectomized rats. J Osteoporos 2013; 2013:825985. [PMID: 24089643 PMCID: PMC3780659 DOI: 10.1155/2013/825985] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 07/26/2013] [Indexed: 12/11/2022] Open
Abstract
The present study examined the dose-dependent effect of vitamin E in reversing bone loss in ovariectomized (Ovx) rats. Sprague-Dawley rats were either Sham-operated (Sham) or Ovx and fed control diet for 120 days to lose bone. Subsequently, rats were divided into 5 groups (n = 12/group): Sham, Ovx-control, low dose (Ovx + 300 mg/kg diet; LD), medium dose (Ovx + 525 mg/kg diet; MD), and high dose (Ovx + 750 mg/kg diet; HD) of vitamin E and sacrificed after 100 days. Animals receiving MD and HD of vitamin E had increased serum alkaline phosphatase compared to the Ovx-control group. Bone histomorphometry analysis indicated a decrease in bone resorption as well as increased bone formation and mineralization in the Ovx groups supplemented with MD and HD of vitamin E. Microcomputed tomography findings indicated no effects of vitamin E on trabecular bone of fifth lumbar vertebrae. Animals receiving HD of vitamin E had enhanced fourth lumbar vertebra quality as evidenced by improved ultimate and yield load and stress when compared to Ovx-control group. These findings demonstrate that vitamin E improves bone quality, attenuates bone resorption, and enhances the rate of bone formation while being unable to restore bone density and trabecular bone structure.
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