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Zhang X, Xu J. The effect of coffee consumption on three main bone disorders: a Mendelian randomization trial. J Bone Miner Metab 2024:10.1007/s00774-024-01533-3. [PMID: 38985180 DOI: 10.1007/s00774-024-01533-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 06/12/2024] [Indexed: 07/11/2024]
Abstract
INTRODUCTION Despite a large number of observational studies examining the effect of coffee consumption(CC) on bone disorders(BDs), particularly, osteoarthritis(OA), osteoportic fracture(OF), and rheumatoid arthritis(RA), the conclusions are highly controversial. Thus, it is essential to examine the causal association between CC and BDs. MATERIALS AND METHODS Mendelian randomization (MR) analysis was performed to assess the causal influence of CC on OF, RA, and OA. The main endpoint was the odds ratio (OR) of the inverse variance weighted (IVW) approach. In addition, the weighted median (WM), MR-Egger regressions, MR-pleiotropy residual sum and outlier (MR-PRESSO) and multivariable MR (MVMR) were included in sensitivity analyses. Furthermore, the function of causal SNPs was evaluated by gene ontology (GO) analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, and protein-protein interaction networks. RESULTS Primary MR analysis based on the IVW method suggested that changes in CC alter risk of OF (OR = 1.383, 95%CI 1.079-1.853, P = 0.039), RA(OR: 1.623, 95%CI 1.042-2.527, P = 0.032) and HOA (hip osteoarthritis, OR = 1.536, 95% CI 1.044-2.259, P = 0.021). However, these causal relationships were not robust in sensitivity analyses. In contrast, there is a positive causal relationship between increased CC and the risk of KOA (knee osteoarthritis, OR: 2.094, 95%CI: 1.592-2.754, P = 1.41 × 10-7), as evidenced by the IVW using random effect. A similar effect size was observed across all MR sensitivity analyses, with no evidence of horizontal pleiotropy. CONCLUSION Based on our MR analysis, increased CC was causally linked to an increase in the risk of KOA. Genetic predictions suggested that CC reduction may have benefits for bone health.
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Affiliation(s)
- Xiang Zhang
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Jin Xu
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Chuangxin China" Innovation Base of Stem Cell and Gene Therapy for Endocrine Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Research Center of Stem Cell and Gene Therapy for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
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Villarreal L, Sanz N, Fagalde FB, D’Andrea F, Lombarte M, Rico MJ, Rozados VR, Scharovsky OG, Plotkin LI, Di Loreto VE, Brun LR. Increased Osteoblastic and Osteocytic in Vitro Cell Viability by Yerba Mate (Ilex paraguariensis). J Bone Metab 2024; 31:101-113. [PMID: 38886968 PMCID: PMC11184151 DOI: 10.11005/jbm.2024.31.2.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/29/2024] [Accepted: 03/13/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Yerba mate (YM, Ilex paraguariensis) consumption beneficially affects the bones. However, whether YM components exert their effect on bone cells directly remains elusive. METHODS We evaluated how main YM components affect osteoblastic (MC3T3-E1) and osteocytic (MLO-Y4) cells in vitro when administered separately or in an aqueous extract. MC3T3-E1 and MLO-Y4 cells were exposed to three different experimental conditions: (1) Caffeine, chlorogenic acid, and their combinations; (2) Caffeine, rutin, and their combinations; (3) Aqueous YM extract. RESULTS All polyphenol and caffeine concentrations as well as that of their tested combinations significantly increased MC3T3-E1 cell viability from 16.6% to 34.8% compared to the control. In MLO-Y4 cells, the lowest rutin and the two highest caffeine concentrations significantly increased cell viability by 11.9, 14.9, and 13.7%, respectively. While rutin and caffeine combinations tended to increase MLO-Y4 cell viability, different chlorogenic acid and caffeine combinations did not affect it. Finally, the aqueous YM extract significantly increased MLO-Y4, MC3T3-E1, and differentiated MC3T3-E1 cell viability compared to the control without treatment. CONCLUSIONS YM components (rutin, chlorogenic acid, and caffeine) positively affected bone cells, mainly pre-osteoblast cells. Moreover, the aqueous YM extract significantly increased MLO-Y4, MC3T3-E1, and differentiated MC3T3-E1 cell viabilities indicating an additional relevant nutritional property of YM infusion. Further studies would be required to elucidate the underlying effector mechanism of YM on the bones and its relationship with previously described in vivo positive effects.
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Affiliation(s)
- Laureana Villarreal
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Natasha Sanz
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
| | - Florencia Buiatti Fagalde
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Florencia D’Andrea
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Mercedes Lombarte
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
| | - María J. Rico
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
- Institute of Experimental Genetics, School of Medical Sciences, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Viviana R. Rozados
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
- Institute of Experimental Genetics, School of Medical Sciences, Rosario National University, Rosario, Santa Fe,
Argentina
| | - O. Graciela Scharovsky
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
- Institute of Experimental Genetics, School of Medical Sciences, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Lilian I. Plotkin
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN,
USA
| | - Verónica E. Di Loreto
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
| | - Lucas R. Brun
- Bone Biology Laboratory, School of Medicine, Rosario National University, Rosario, Santa Fe,
Argentina
- National Council of Scientific and Technical Research (CONICET), Buenos Aires,
Argentina
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Liao S, Zhou J, Chen H, Wei W, Ye F, Zhang Y, Zhang Z. The relationship between caffeine and its metabolites and bone mineral density in postmenopausal women: a cross-sectional analysis from the NHANES database. J Nutr Sci 2024; 12:e131. [PMID: 38415243 PMCID: PMC10897510 DOI: 10.1017/jns.2023.98] [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: 10/07/2023] [Accepted: 10/13/2023] [Indexed: 02/29/2024] Open
Abstract
We aim to explore the association between caffeine and its metabolites and bone mineral density (BMD) in postmenopausal women. Data of 4286 postmenopausal women were extracted from the National Health and Nutrition Examination Survey (NHANES) database in 2009-14 in this cross-sectional study. Weighted linear regression and stepwise regression analyses were used to screen the covariates. Weighted univariate and multivariate linear regression analyses were used to explore the associations between caffeine and its metabolites and BMD. The evaluation index was estimated value (β) with 95 % confidence intervals (CIs). We also explored these relationships in age subgroups. The median BMD level among the eligible women was 0⋅7 gm/cm2. After adjusting for covariates including age, body mass index (BMI), fat intake, Calcium (Ca) supplements, diabetes mellitus (DM), angina pectoris, parental history of osteoporosis (OP), anti-osteoporosis therapy, poverty income ratio (PIR), vitamin D (VD) supplements, coronary heart disease (CHD), and previous fracture, we found that caffeine intake was not significantly related to the BMD reduction (β = 0, P = 0⋅135). However, caffeine metabolites, including MethyluricAcid3, MethyluricAcid7, MethyluricAcid37, Methylxanthine3, and Methylxanthine37, were negatively associated with the BMD (all P < 0⋅05). In addition, MethyluricAcid37 and Methylxanthine37 were negatively associated with BMD in females aged <65 years old, while MethyluricAcid3 and Methylxanthine3 were noteworthy in those who aged ≥65 years old. The roles of caffeine and its metabolites in BMD reduction and OP in postmenopausal women needed further exploration.
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Affiliation(s)
- Sheng Liao
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Jianhong Zhou
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Hui Chen
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Wei Wei
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Feng Ye
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Yidong Zhang
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
| | - Zhongrong Zhang
- Department of Orthopaedic, Jiangbei Branch of Southwest Hospital, 958th Hospital of the PLA Army, No. 29 Jianxin East Road, JiangbeiDistrict, Chongqing 400000, P.R. China
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Zhou F, Wang T, Li L, Yu J, Liu Z, Zhang J, Wang G, Li J, Shao C, Wang P, Chen W. Tea consumption and risk of bone health: an updated systematic review and meta-analysis. J Bone Miner Metab 2024; 42:99-114. [PMID: 38057603 DOI: 10.1007/s00774-023-01479-y] [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: 07/28/2023] [Accepted: 10/27/2023] [Indexed: 12/08/2023]
Abstract
INTRODUCTION Current research evaluating the association between tea consumption and bone health still has inconsistent findings. MATERIALS AND METHODS The electronic databases of Embase, PubMed, Scopus, and Web of Science were systematically searched from inception until December 2022 to identify eligible studies. The calculation of summary relative risks (RRs) and 95% confidence intervals (CIs) was carried out using random-effects models. I2 statistics and Forest plots were used to assess the heterogeneity of RR values across studies. RESULTS The pooled relative risks for bone health-related outcomes of interest among tea drinkers, compared to non-drinkers, were 0.910 (95% confidence interval 0.845 to 0.980) for fractures, based on 20 studies, 0.332 (0.207-0.457) for BMD (13 studies), 0.800 (0.674-0.950) for osteoporosis (10 studies), and 1.006 (0.876-1.156) for osteopenia (5 studies). Subgroup analysis of locations showed that the pooled relative risks were 0.903 (0.844-0.966) for the hip, 0.735 (0.586-0.922) for the femur, 0.776 (0.610-0.988) for the lumbar, 0.980 (0.942-1.021) for the forearm and wrist, 0.804 (0.567-1.139) for the phalanges, and 0.612 (0.468-0.800) for Ward's triangle. One-stage dose-response analysis revealed that individuals who consumed less than 4.5 cups of tea per day had a lower risk of bone health-related outcomes than those who did not consume tea, with statistically significant results. CONCLUSION There is an association between tea consumption and a reduced risk of fractures, osteoporosis, hip, femur, and lumbar, as well as increased BMD.
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Affiliation(s)
- Fuding Zhou
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Ting Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Lexun Li
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Jinchuan Yu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Zhengxiang Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China
| | - Jianghui Zhang
- Department of Medical Statistics, School of Public Health, Sun Yat-sen University, Guangzhou, 510000, China
| | - Guangjun Wang
- School of Public Health, Anhui Medical University, Hefei, China
| | - Jiujiu Li
- Hefei Center for Disease Control and Prevention, Hefei, 230041, Anhui, China
| | - Changsheng Shao
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230026, China
| | - Peng Wang
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230026, China.
| | - Wenjun Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, Hefei, 230032, China.
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安 可, 周 学. [Latest Findings on Ferroptosis and Osteoarthropathy]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:1294-1299. [PMID: 38162082 PMCID: PMC10752773 DOI: 10.12182/20231160209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 01/03/2024]
Abstract
Ferroptosis, a newly-discovered mode of programmed cell death, is closely associated with the development of various diseases throughout the human body, such as tumors of the digestive system, ischemia-reperfusion injury, osteoarthropathy, etc. Therefore, ferroptosis has become a hot research topic in many fields of study in recent years, providing new ideas for the prevention and treatment of relevant diseases. Among them, structural lesions in osteoarthropathies involving articular cartilage, subchondral bone, and synovial tissue have been found to be associated with iron overload, as well as oxidative stress, which suggests that inhibition of ferroptosis in relevant joint tissue cells may have a positive effect in halting the development of osteoarthropathy. Herein, focusing on ferroptosis and osteoarthropathy, we summarized the research developments in mechanisms related to iron metabolism and ferroptosis, analyzed the impact of ferroptosis on the pathogenesis and development of osteoarthropathy, and proposed new ideas for medication therapies of osteoarthropathy, taking into account the latest research findings.
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Affiliation(s)
- 可 安
- 口腔疾病研究国家重点实验室 国家口腔疾病临床医学研究中心 四川大学华西口腔医院 牙体牙髓病科 (成都 610041)State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - 学东 周
- 口腔疾病研究国家重点实验室 国家口腔疾病临床医学研究中心 四川大学华西口腔医院 牙体牙髓病科 (成都 610041)State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Hu J, Li Y, Wang Z, Li X, Hou T, Ning Z, Huang R, Ma C, Yuan X, Wang D. Association of plant-based dietary patterns with the risk of osteoporosis in community-dwelling adults over 60 years: a cross-sectional study. Osteoporos Int 2023; 34:915-923. [PMID: 36856795 DOI: 10.1007/s00198-023-06700-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 02/08/2023] [Indexed: 03/02/2023]
Abstract
UNLABELLED Plant foods are rich in many important micronutrients that are beneficial for bone health. This cross-sectional study of 9613 community-dwelling older adults found that more consumption of healthy plant foods and less consumption of animal foods and unhealthy plant foods were associated with a lower risk of osteoporosis. INTRODUCTION Osteoporosis,a common chronic disease in older adults, threatens their health. Many nutrients in plant foods are important for preventing osteoporosis. However, the relationship between plant-based dietary patterns and osteoporosis remains unclear. This study aimed to investigate the cross-sectional association between plant-based dietary patterns and osteoporosis in older adults. METHODS This study was conducted among 9613 community-dwelling older adults in Liaoning Province, China. The effective food frequency questionnaire (FFQ) and plant-based diet index (PDI) were used to evaluate compliance with plant-based dietary patterns. Osteoporosis was defined based on heel ultrasound. We analyzed the association between healthy plant-based diet index (HPDI) and unhealthful plant-based diet index (UPDI) and the risk of osteoporosis. RESULTS A higher PDI was associated with higher bone mineral density (BMD) in older adults. In logistic regression models, the highest quartile of PDI and HPDI had a significantly lower risk of osteoporosis than the lowest quartile, whereas UPDI in the highest quartile was associated with a higher risk of osteoporosis. There was a dose-response relationship between the three indices and the risk of osteoporosis. Subgroup analysis revealed differences in the relationship between HPDI and the risk of osteoporosis according to gender and age. CONCLUSIONS Older adults, especially women, consume more healthy plant foods and reduce the consumption of animal foods and unhealthy plant foods, which was associated with a lower risk of osteoporosis.
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Affiliation(s)
- Junwei Hu
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Yi Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, China
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Zheng Wang
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Xin Li
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Tianbo Hou
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Zibo Ning
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Runnian Huang
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Chunhua Ma
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Xiaoyue Yuan
- Department of Health Statistics, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Difei Wang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, China.
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Naude, MTech (Hom) DF. Chronic Sub-Clinical Systemic Metabolic Acidosis - A Review with Implications for Clinical Practice. J Evid Based Integr Med 2022; 27:2515690X221142352. [PMID: 36448194 PMCID: PMC9716591 DOI: 10.1177/2515690x221142352] [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] [Indexed: 12/03/2022] Open
Abstract
When arterial serum pH remains near the lower pH limit of 7.35 for protracted periods of time, a low-grade, sub-clinical form of acidosis results, referred to in this review as chronic, sub-clinical, systemic metabolic acidosis (CSSMA). This narrative review explores the scientific basis for CSSMA, its consequences for health, and potential therapeutic interventions. The major etiology of CSSMA is the shift away from the ancestral, alkaline diet which was rich in fruit and vegetables, toward the contemporary, acidogenic 'Westernized' diet characterized by higher animal protein consumption and lack of base forming minerals. Urine pH is reduced with high dietary acid load and may be a convenient marker of CSSMA. Evidence suggests further that CSSMA negatively influences cortisol levels potentially contributing significantly to the pathophysiology thereof. Both CSSMA and high dietary acid load are associated with the risk and prognosis of various chronic diseases. Clinical trials show that CSSMA can be addressed successfully through alkalizing the diet by increasing fruit and vegetable intake and/or supplementing with alkaline minerals. This review confirms the existence of a significant body of evidence regarding this low-grade form of acidosis as well as evidence to support its diverse negative implications for health, and concludes that CSSMA is a condition warranting further research.
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Affiliation(s)
- David Francis Naude, MTech (Hom)
- Irma Schutte Foundation, Drummond, South Africa,David Francis Naude, Irma Schutte Foundation, 42 Protea Hill Rd, Drummond, KwaZulu Natal, 3626, South Africa. Postal address: P.O Box 8, Hillcrest, KwaZulu Natal, 3650, South Africa.
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Munmun F, Mohiuddin OA, Hoang VT, Burow ME, Bunnell BA, Sola VM, Carpentieri AR, Witt-Enderby PA. The role of MEK1/2 and MEK5 in melatonin-mediated actions on osteoblastogenesis, osteoclastogenesis, bone microarchitecture, biomechanics, and bone formation. J Pineal Res 2022; 73:e12814. [PMID: 35674448 DOI: 10.1111/jpi.12814] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/30/2022] [Accepted: 05/11/2022] [Indexed: 12/11/2022]
Abstract
Melatonin, the primary hormone involved in circadian entrainment, plays a significant role in bone physiology. This study aimed to assess the role of MEK1/2 and MEK5 in melatonin-mediated actions in mouse and human mesenchymal stem cells (MSCs) and on bone using small-molecule inhibitors and CRISPR/Cas9 knockout approaches. Consistent with in vitro studies performed in mMSCs and hMSCs, nightly (25 mg/kg, i.p., 45 days) injections with PD184352 (MEK1/2 inhibitor) or Bix02189 (MEK5 inhibitor) or SC-1-151 (MEK1/2/5 inhibitor) demonstrated that MEK1/2 and MEK5 were the primary drivers underlying melatonin's actions on bone density, microarchitecture (i.e., trabecular number, separation, and connectivity density), and bone mechanical properties (i.e., ultimate stress) through increases in osteogenic (RUNX2, BMP-2, FRA-1, OPG) expression and decreases in PPARγ. Furthermore, CRISPR/Cas9 knockout of MEK1 or MEK5 in mMSCs seeded on PLGA scaffolds and placed into critical-size calvarial defects in Balb(c) mice (male and female) revealed that treatment with melatonin (15 mg/L; p.o., nightly, 90 days) mediates sex-specific actions of MEK1 and MEK5 in new bone formation. This study is the first to demonstrate a role for MEK1/2 and MEK5 in modulating melatonin-mediated actions on bone formation in vivo and in a sex-specific manner.
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Affiliation(s)
- Fahima Munmun
- Division of Pharmaceutical Sciences, Duquesne University School of Pharmacy, Pittsburgh, Pennsylvania, USA
| | - Omair A Mohiuddin
- Center for Stem Cell Research and Regenerative Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Van T Hoang
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Matthew E Burow
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Bruce A Bunnell
- Center for Stem Cell Research and Regenerative Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Veronica M Sola
- Department of Oral Biology, Faculty of Odontology, National University of Cordoba, Cordoba, Argentina
| | - Agata R Carpentieri
- Faculty of Odontology, National University of Cordoba and National Council for Scientific and Technical Research (CONICET); Institute for Health Sciences Research (INICSA), Cordoba, Argentina
| | - Paula A Witt-Enderby
- Division of Pharmaceutical Sciences, Duquesne University School of Pharmacy, Pittsburgh, Pennsylvania, USA
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Wu T, Tang H, Yang J, Yao Z, Bai L, Xie Y, Li Q, Xiao J. METTL3-m 6 A methylase regulates the osteogenic potential of bone marrow mesenchymal stem cells in osteoporotic rats via the Wnt signalling pathway. Cell Prolif 2022; 55:e13234. [PMID: 35470497 PMCID: PMC9136513 DOI: 10.1111/cpr.13234] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVES Bone marrow mesenchymal stem cells (BMSCs) hold a high osteogenic differentiation potential, but the mechanisms that control the osteogenic ability of BMSCs from osteoporosis (OP-BMSCs) need further research. The purpose of this experiment is to discuss the osteogenic effect of Mettl3 on OP-BMSCs and explore new therapeutic target that can enhance the bone formation ability of OP-BMSCs. MATERIALS AND METHODS The bilateral ovariectomy (OVX) method was used to establish the SD rat OP model. Dot blots were used to reveal the different methylation levels of BMSCs and OP-BMSCs. Lentiviral-mediated overexpression of Mettl3 was applied in OP-BMSCs. QPCR and WB detected the molecular changes of osteogenic-related factors and Wnt signalling pathway in vitro experiment. The staining of calcium nodules and alkaline phosphatase detected the osteogenic ability of OP-BMSCs. Micro-CT and histological examination evaluated the osteogenesis of Mettl3 in OP rats in vivo. RESULTS The OP rat model was successfully established by OVX. Methylation levels and osteogenic potential of OP-BMSCs were decreased in OP-BMSCs. In vitro experiment, overexpression of Mettl3 could upregulate the osteogenic-related factors and activate the Wnt signalling pathway in OP-BMSCs. However, osteogenesis of OP-BMSCs was weakened by treatment with the canonical Wnt inhibitor Dickkopf-1. Micro-CT showed that the Mettl3(+) group had an increased amount of new bone formation at 8 weeks. Moreover, the results of histological staining were the same as the micro-CT results. CONCLUSIONS Taken together, the methylation levels and osteogenic potential of OP-BMSCs were decreased in OP-BMSCs. In vitro and in vivo studies, overexpression of Mettl3 could partially rescue the decreased bone formation ability of OP-BMSCs by the canonical Wnt signalling pathway. Therefore, Mettl3 may be a key targeted gene for bone generation and therapy of bone defects in OP patients.
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Affiliation(s)
- Tianli Wu
- Department of Oral ImplantologyThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
- Department of Oral and Maxillofacial SurgeryThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Hui Tang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Jianghua Yang
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
- Department of Medical Technology, Faculty of Associated Medical SciencesChiang Mai UniversityChiang MaiThailand
| | - Zhihao Yao
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Long Bai
- Department of Oral ImplantologyThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Yuping Xie
- Department of Oral ImplantologyThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Qing Li
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
| | - Jingang Xiao
- Department of Oral ImplantologyThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
- Department of Oral and Maxillofacial SurgeryThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
- Luzhou Key Laboratory of Oral & Maxillofacial Reconstruction and RegenerationThe Affiliated Stomatological Hospital of Southwest Medical UniversityLuzhouChina
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10
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Ferroptosis - A new target of osteoporosis. Exp Gerontol 2022; 165:111836. [DOI: 10.1016/j.exger.2022.111836] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/04/2022] [Accepted: 05/15/2022] [Indexed: 11/21/2022]
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11
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Tarawneh IN. Polycyclic Aromatic Hydrocarbons and Some of Organochlorine Pesticide Residues and Health Risk Assessments in Commonly Consumed Teas in Jordan. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.2006246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Chen Q, Xu Z, Li X, Du D, Wu T, Zhou S, Yan W, Wu M, Jin Y, Zhang J, Wang S. Epigallocatechin gallate and theaflavins independently alleviate cyclophosphamide-induced ovarian damage by inhibiting the overactivation of primordial follicles and follicular atresia. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 92:153752. [PMID: 34601223 DOI: 10.1016/j.phymed.2021.153752] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 09/08/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Cyclophosphamide (CTX), which has been used to treat common female cancers for several years, often causes ovarian damage, early menopause and infertility. However, strategies for the effective prevention and treatment of CTX-induced ovarian damage are still lacking. Epigallocatechin gallate (EGCG) and theaflavins (TFs), key molecules derived from green tea or black tea, have been shown to exert preventive effects on many ageing-related diseases. PURPOSE We aimed to explore the potential preventive and protective effects of EGCG and TFs on CTX-induced ovarian damage and compare the two compounds. STUDY DESIGN Six-week-old female mice were administered a low or high dose of EGCG or TFs. The low dose was equivalent to the average daily amount of tea consumed by a drinker. METHODS We determined the oestrous cycle and serum hormone levels to evaluate ovarian endocrine function, and we performed mating tests for reproductivity. We also assessed the follicle count and AMH level to evaluate ovarian reserve, and we performed Masson's trichrome and Sirius red staining to evaluate ovarian fibrosis. We conducted γ-H2AX and TUNEL analyses to evaluate DNA damage, and we also measured the relevant indicators of oxidative stress and follicular activation, including NRF2, HO-1, SOD2, AKT, mTOR and RPS6. RESULTS EGCG and TFs treatment independently improved the ovarian endocrine function and reproductivity of mice that were administered CTX. EGCG and TFs also increased the ovarian reserve of these animals. Furthermore, EGCG and TFs alleviated oxidation-induced damage to ovarian DNA in mice by activating the NRF2/HO-1 and SOD2 pathways and reducing the apoptosis of growing follicles. At the same time, EGCG and TFs reduced the overactivation of primordial follicles by inhibiting the AKT/mTOR/RPS6 pathway. CONCLUSION The present study showed that EGCG and TFs independently improved ovarian function in mice with CTX-induced ovarian damage, thereby providing useful information for designing a potential clinical strategy that will protect against chemotherapy-induced ovarian damage.
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Affiliation(s)
- Qian Chen
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Zheyuan Xu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China; Department of Pediatrics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xiang Li
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China; Department of pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Dingfu Du
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China; Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Tong Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Su Zhou
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Wei Yan
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Meng Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Yan Jin
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
| | - Jinjin Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China.
| | - Shixuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China.
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Ni S, Wang L, Wang G, Lin J, Ma Y, Zhao X, Ru Y, Zheng W, Zhang X, Zhu S. Drinking tea before menopause is associated with higher bone mineral density in postmenopausal women. Eur J Clin Nutr 2021; 75:1454-1464. [PMID: 33514873 DOI: 10.1038/s41430-021-00856-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 12/15/2020] [Accepted: 01/05/2021] [Indexed: 01/30/2023]
Abstract
BACKGROUND Though tea drinking years and menopause stages have been indicated to be related with bone mineral density (BMD), most human studies have not considered the impact of tea drinking beginning time. Whether drinking tea before or after menopause plays a role in BMD is still unclear. This study aims to analyze whether drinking tea before or after menopause influences BMD in Chinese postmenopausal women. METHODS A total of 1377 postmenopausal women under 80 years were enrolled from the baseline survey of the Lanxi Cohort Study. Participants were initially categorized into non-tea drinking, tea drinking beginning after menopause and tea drinking beginning before menopause groups. Tea drinking groups were subdivided according to tea drinking frequency, concentration and type. Multiple linear regression models were applied to evaluate associations between tea drinking before or after menopause and BMD and the impacts of tea drinking frequency, concentration and type on their associations in analyses including all participants. Interactions of tea drinking frequency, concentration and type with drinking tea before or after menopause were further analyzed. RESULTS After adjusting for confounding factors, women who began drinking tea before menopause had significantly higher total and regional BMD than non-tea drinking participants and participants who began drinking tea after menopause. Differences in spine BMD were more significant among those who drank tea ≥four times per week. In addition, significant associations between tea drinking and BMD were found among participants who began drinking tea before menopause in both models, irrespective of the concentration and type of tea. No significant associations were found in subgroups of participants who began drinking tea after menopause in either model. CONCLUSIONS The results indicate that drinking tea before menopause is related to higher BMD in Chinese postmenopausal women. The relationship is independent of tea drinking concentration and type.
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Affiliation(s)
- Saili Ni
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition, Beilun District People's Hospital of Ningbo, Ningbo, Zhejiang, China
| | - Lu Wang
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | - Guowei Wang
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jie Lin
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiyun Ma
- English Department, School of Humanities, Tsinghua University, Beijing, China
| | - Xueyin Zhao
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yuan Ru
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | | | - Xiaohui Zhang
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China
| | - Shankuan Zhu
- Chronic Disease Research Institute, The Children's Hospital, and National Clinical Research Center for Child Health, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. .,Department of Nutrition and Food Hygiene, School of Public Health, Zhejiang University, Hangzhou, Zhejiang, China.
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14
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Munmun F, Witt-Enderby PA. Melatonin effects on bone: Implications for use as a therapy for managing bone loss. J Pineal Res 2021; 71:e12749. [PMID: 34085304 DOI: 10.1111/jpi.12749] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/22/2021] [Accepted: 05/31/2021] [Indexed: 02/06/2023]
Abstract
Melatonin is the primary circadian output signal from the brain and is mainly synthesized in pinealocytes. The rhythm and secretion of melatonin are under the control of an endogenous oscillator located in the SCN or the master biological clock. Disruptions in circadian rhythms by shift work, aging, or light at night are associated with bone loss and increased fracture risk. Restoration of nocturnal melatonin peaks to normal levels or therapeutic levels through timed melatonin supplementation has been demonstrated to provide bone-protective actions in various models. Melatonin is a unique molecule with diverse molecular actions targeting melatonin receptors located on the plasma membrane or mitochondria or acting independently of receptors through its actions as an antioxidant or free radical scavenger to stimulate osteoblastogenesis, inhibit osteoclastogenesis, and improve bone density. Its additional actions on entraining circadian rhythms and improving quality of life in an aging population coupled with its safety profile make it an ideal therapeutic candidate for protecting against bone loss in susceptible populations. The intent of this review is to provide a focused discussion on bone loss and disorders of the bone as it relates to melatonin and conditions that modify melatonin levels with the hope that future therapies include those that include melatonin and correct those factors that modify melatonin levels like circadian disruption.
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Affiliation(s)
- Fahima Munmun
- Division of Pharmaceutical Sciences, Duquesne University School of Pharmacy, Pittsburgh, PA, USA
| | - Paula A Witt-Enderby
- Division of Pharmaceutical Sciences, Duquesne University School of Pharmacy, Pittsburgh, PA, USA
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Han CS, Kim HK, Kim S. Effects of Adolescents' Lifestyle Habits and Body Composition on Bone Mineral Density. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18116170. [PMID: 34200352 PMCID: PMC8201294 DOI: 10.3390/ijerph18116170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022]
Abstract
The incidence of osteoporosis is increasing as the population ages, as is the need to manage and prevent it. Adolescence is the period when the fastest development of bone mass takes place. Increasing adolescents’ maximum bone mass and avoiding the risk factors for its loss are effective for preventing osteoporosis. This study investigated the factors influencing adolescents’ bone mineral density (BMD). The participants were 126 middle- and high-school students from Gangwon-do; 47.6% (n = 60) were male, with an average age of 15 (range 12–18) years of age. It was found that age, carbonated beverages, snacks, and calcium supplements were variables that showed significant differences in adolescents’ BMD. Additionally, through correlation analysis, it was found that height, weight, body mass index (BMI), body water, protein, minerals, body fat mass, and skeletal muscle mass were correlated with BMD. Multiple regression analysis identified age, calcium supplements, BMI, body fat mass, and skeletal muscle mass as BMD-associated factors. These results show that adolescents’ BMD is higher with lower body fat mass, higher BMI and skeletal muscle mass, and a higher intake of calcium supplements.
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Affiliation(s)
- Chang-Sook Han
- Division of Nursing, Graduate School, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si 135-841, Gangwon-do, Korea; (C.-S.H.); (H.-K.K.)
| | - Hyo-Kyung Kim
- Division of Nursing, Graduate School, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si 135-841, Gangwon-do, Korea; (C.-S.H.); (H.-K.K.)
| | - Suhee Kim
- School of Nursing and Research Institute of Nursing Science, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si 135-841, Gangwon-do, Korea
- Correspondence: ; Tel.: +82-33-248-2718
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16
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Ratajczak AE, Szymczak-Tomczak A, Zawada A, Rychter AM, Dobrowolska A, Krela-Kaźmierczak I. Does Drinking Coffee and Tea Affect Bone Metabolism in Patients with Inflammatory Bowel Diseases? Nutrients 2021; 13:nu13010216. [PMID: 33451170 PMCID: PMC7828660 DOI: 10.3390/nu13010216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/07/2021] [Accepted: 01/09/2021] [Indexed: 12/16/2022] Open
Abstract
Patients suffering from Crohn’s disease and ulcerative colitis are at higher risk of osteoporosis due to lower bone mineral density. Risk factors of osteoporosis are divided into unmodifiable, namely, age, gender, genetic factors, as well as modifiable, including diet, level of physical activity, and the use of stimulants. Coffee and tea contain numerous compounds affecting bone metabolism. Certain substances such as antioxidants may protect bones; other substances may increase bone resorption. Nevertheless, the influence of coffee and tea on the development and course of inflammatory bowel diseases is contradictory.
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Affiliation(s)
- Alicja Ewa Ratajczak
- Correspondence: (A.E.R.); (I.K.-K.); Tel.: +48-667-385-996 (A.E.R.); +48-8691-343 (I.K.-K.); Fax: +48-8691-686 (A.E.R.)
| | | | | | | | | | - Iwona Krela-Kaźmierczak
- Correspondence: (A.E.R.); (I.K.-K.); Tel.: +48-667-385-996 (A.E.R.); +48-8691-343 (I.K.-K.); Fax: +48-8691-686 (A.E.R.)
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Xia SL, Ma ZY, Wang B, Guo SY, Zhou XX, Gao F. The Association between Tea Consumption and the Risk of Fracture: A Dose-Response Meta-Analysis of Prospective Cohort Studies. J Nutr Health Aging 2021; 25:1046-1052. [PMID: 34725660 DOI: 10.1007/s12603-021-1677-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Inconsistent results exist on the role of tea consumption on subsequent risk of fracture. A dose-response meta-analysis was therefore conducted to assess the association of tea consumption with the risk of fracture based on prospective cohort studies. METHODS The electronic databases of PubMed, Embase, and the Cochrane library were systematically searched to identify prospective cohort studies from inception until September 2020. The categories of high versus low and dose-response meta-analyses for tea consumption on the risk of fracture were calculated using the random-effects model. Eight prospective cohort studies recruited 774,134 individuals selected for the final meta-analysis. RESULTS An increment of 1 cup in tea consumption was not associated with the risk of fracture [relative risk (RR), 0.98; 95% confidence interval (CI), 0.96-1.00; P = 0.102]. Moreover, the highest tea consumption category was associated with a reduced risk of fracture (RR, 0.93; 95% CI, 0.88-0.98; P = 0.005). Furthermore, heavy (RR, 0.91; 95% CI, 0.85-0.98; P = 0.008) and mild (RR, 0.97; 95% CI, 0.94-1.00; P = 0.046) tea consumption were associated with lower risk of fracture. However, moderate tea consumption was not associated with the risk of fracture (RR, 0.98; 95% CI, 0.94-1.02; P = 0.281). CONCLUSION This study found that increased tea consumption may provide a protective role in the risk of fracture. The benefits of tea consumption should be further explored according to the characteristics of the individuals.
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Affiliation(s)
- S-L Xia
- Feng Gao, 1500 Zhoupu Zhouyuan Road, Pudong New Area, Shanghai 201318, China, Tel: 86-021-68135590, of Missouri Sinclair School of Nursing, Columbia, USA,
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18
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Huang HT, Cheng TL, Lin SY, Ho CJ, Chyu JY, Yang RS, Chen CH, Shen CL. Osteoprotective Roles of Green Tea Catechins. Antioxidants (Basel) 2020; 9:E1136. [PMID: 33207822 PMCID: PMC7696448 DOI: 10.3390/antiox9111136] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/08/2020] [Accepted: 11/12/2020] [Indexed: 02/07/2023] Open
Abstract
Osteoporosis is the second most common disease only secondary to cardiovascular disease, with the risk of fracture increasing with age. Osteoporosis is caused by an imbalance between osteoblastogenesis and osteoclastogenesis processes. Osteoclastogenesis may be enhanced, osteoblastogenesis may be reduced, or both may be evident. Inflammation and high reactive oxygen enhance osteoclastogenesis while reducing osteoblastogenesis by inducing osteoblast apoptosis and suppressing osteoblastic proliferation and differentiation. Catechins, the main polyphenols found in green tea with potent anti-oxidant and anti-inflammatory properties, can counteract the deleterious effects of the imbalance of osteoblastogenesis and osteoclastogenesis caused by osteoporosis. Green tea catechins can attenuate osteoclastogenesis by enhancing apoptosis of osteoclasts, hampering osteoclastogenesis, and prohibiting bone resorption in vitro. Catechin effects can be directly exerted on pre-osteoclasts/osteoclasts or indirectly exerted via the modulation of mesenchymal stem cells (MSCs)/stromal cell regulation of pre-osteoclasts through activation of the nuclear factor kB (RANK)/RANK ligand (RANKL)/osteoprotegerin (OPG) system. Catechins also can enhance osteoblastogenesis by enhancing osteogenic differentiation of MSCs and increasing osteoblastic survival, proliferation, differentiation, and mineralization. The in vitro effects of catechins on osteogenesis have been confirmed in several animal models, as well as in epidemiological observational studies on human subjects. Even though randomized control trials have not shown that catechins provide anti-fracture efficacy, safety data in the trials are promising. A large-scale, placebo-controlled, long-term randomized trial with a tea regimen intervention of optimal duration is required to determine anti-fracture efficacy.
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Affiliation(s)
- Hsuan-Ti Huang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (H.-T.H.); (T.-L.C.); (S.-Y.L.); (C.-J.H.)
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
| | - Tsung-Lin Cheng
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (H.-T.H.); (T.-L.C.); (S.-Y.L.); (C.-J.H.)
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
| | - Sung-Yen Lin
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (H.-T.H.); (T.-L.C.); (S.-Y.L.); (C.-J.H.)
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
| | - Cheng-Jung Ho
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (H.-T.H.); (T.-L.C.); (S.-Y.L.); (C.-J.H.)
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
| | - Joanna Y. Chyu
- School of Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Rong-Sen Yang
- Department of Orthopedics, National Taiwan University Hospital, Taipei 100229, Taiwan;
| | - Chung-Hwan Chen
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan; (H.-T.H.); (T.-L.C.); (S.-Y.L.); (C.-J.H.)
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
- Department of Healthcare Administration and Medical Informatics, Kaohsiung Medical University, Kaohsiung 80701, Taiwan
| | - Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Center of Excellence for Integrative Health, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
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Post-menopausal osteoporosis: do body composition, nutritional habits, and physical activity affect bone mineral density? NUTR HOSP 2020; 37:977-983. [PMID: 32960644 DOI: 10.20960/nh.03214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Introduction Aim: to evaluate the effect of body composition, nutritional habits (NH), and physical activity (PA) levels on bone mineral density (BMD) in osteoporotic postmenopausal women (OPW). Subjects and method: the demographic characteristics, anthropometric measurements, PA status, information on NH, some biochemical findings, and BMD measurements of 100 OPWs were evaluated. Results: in this study, 48 % of the women were classified as obese. The obese women were found to have lower vitamin D levels and higher parathyroid hormone levels than those of the over-weight women. A positive correlation was found between body mass index and L1L4, L2L4, and femur BMD (r = 0.268, p < 0.001; r = 0.241, p < 0.01; r = 0.369, p < 0.001, respectively). There was a significant decrease in L1L4 and femur BMD with increasing age (r = -0.224, p < 0.05; r = -0.366, p < 0.001, respectively). Femur BMD showed a positive correlation with duration (hours/week) and frequency of PA (days/week). According to the logistic regression analysis, body weight, daily tea consumption, and PA were positively associated with femur BMD, while advanced age, the age of menarche, salt and coffee consumption, and postmenopausal fracture status were negatively associated. Conclusion: we observed that body weight, some nutritional factors, and active lifestyle have seemed to effect BMD in OPWs. An adequate, balanced nutrition maintaining the ideal weight, and regular physical activity may improve bone health in OPWs.
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Elmassry MM, Chung E, Cao JJ, Hamood AN, Shen CL. Osteoprotective effect of green tea polyphenols and annatto-extracted tocotrienol in obese mice is associated with enhanced microbiome vitamin K 2 biosynthetic pathways. J Nutr Biochem 2020; 86:108492. [PMID: 32920088 DOI: 10.1016/j.jnutbio.2020.108492] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/15/2020] [Accepted: 08/18/2020] [Indexed: 12/11/2022]
Abstract
The role of the gut microbiome in bone health has received significant attention in the past decade. We investigated the effects of green tea polyphenols (GTP) and annatto-extracted tocotrienols (AT) on bone properties and gut microbiome in obese mice. Male mice were assigned to a two (no AT vs. 400 mg/kg diet AT) × two (no GTP vs. 0.5% w/v GTP) factorial design, namely control, G, T, and G+T group respectively, for 14 weeks. The 4th lumbar vertebra (LV-4) and femur were harvested for bone microstructural analysis using μ-CT. Microbiome analysis using 16S rRNA gene sequencing of cecal feces was performed. AT increased bone volume at distal femur. GTP increased serum procollagen type 1 N-terminal propeptide concentration, bone volume at the distal femur and the LV-4, and trabecular number at distal femur; whereas GTP decreased trabecular separation at distal femur. Interactions between GTP and AT were observed in serum C-terminal telopeptide of type I collagen level (control>G=T=G+T) as well as the cortical bone area (control<G=T=G+T) and thickness (T≥G+T≥G≥control) at femur mid-diaphysis. Redundancy analysis showed a significant difference in the gut microbiome profile among different groups and the relative abundance of Akkermansia muciniphila, Clostridum saccharogumia, and Subdoligranulum variabile was increased in the GTP- and AT-supplemented groups. Functional profiling of the gut microbiome showed the combination of GTP and AT induced biosynthetic pathways for vitamin K2. Our results suggest that GTP and AT supplementation benefits bone properties in obese mice through modifying gut microbiome composition and function.
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Affiliation(s)
- Moamen M Elmassry
- Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409.
| | - Eunhee Chung
- Department of Kinesiology, Health, and Nutrition, University of Texas at San Antonio, San Antonio, TX 78249.
| | - Jay J Cao
- USDA ARS Grand Forks Human Nutrition Research Center, Grand Forks, ND 58203.
| | - Abdul N Hamood
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX 79430; Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX 79430.
| | - Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX 79430; Center of Excellence for Integrative Health, Texas Tech University Health Sciences Center, Lubbock, TX 79430; Obesity Research Institute, Texas Tech University, Lubbock, TX 79409.
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Zhang Z, Zhao Q, Liu T, Zhao H, Wang R, Li H, Zhang Y, Shan L, He B, Wang X, Huang L, Hao D, Sun H. Effect of Vicenin-2 on ovariectomy-induced osteoporosis in rats. Biomed Pharmacother 2020; 129:110474. [DOI: 10.1016/j.biopha.2020.110474] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/19/2023] Open
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22
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Determination of 9,10-anthraquinone in tea consumed in Shandong Province of China. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01254-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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Yıldırım M, Saral S, Mercantepe T, İskender H, Tümkaya L, Atak M, Taşçı F. White Tea Reduced Bone Loss by Suppressing the TRAP/CTX Pathway in Ovariectomy-Induced Osteoporosis Model Rats. Cells Tissues Organs 2020; 209:64-74. [DOI: 10.1159/000507791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/08/2020] [Indexed: 11/19/2022] Open
Abstract
Osteoporosis is an important skeletal disease characterized by bone weakness and high risk of fracture in postmenopausal women. Tea consumption is known to play an important role in the prevention or alleviation of osteoporosis. However, the therapeutic effects of aqueous extracts of white tea (WT) have not been evaluated in osteoporosis rat models. The aim of this study was to investigate the potential anti-osteoporotic role of WT in ovariectomized (OVX) rats. WT was given orally at 0.5% w/v doses for 12 weeks in OVX rats. Biochemical parameters in blood samples, bone tartrate-resistant acid phosphatase (TRAP), C-terminal telopeptide of type 1 collagen (CTX) and estradiol levels were evaluated. Bone mineral density and bone mineral content values were measured in the left femur. In addition to histopathological examination, osteolcalcin, osteopontin and TUNEL levels were determined. OVX group data demonstrated that bone loss occurred by thinning of the metaphyseal growth plates of the femur. Similarly, the levels of TRAP and CTX, markers of osteoclastic activity, were found to be high concurrently with a decrease in femoral bone mineral density. In addition, increased osteolcalcin and osteopontin levels were present in the metaphyseal growth zones. On the other hand, while TRAP and CTX levels were suppressed in the OVX-WT group, bone mineral content increased. In addition, TUNEL, osteocalcin and osteopontin positivity decreased in the right femoral metaphysis growth zones, proliferating zone and resting zone cells. These results showed that chronic WT consumption has a protective effect by reducing bone resorption in OVX-induced osteoporotic rats.
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Che J, Yang J, Zhao B, Zhang G, Wang L, Peng S, Shang P. The Effect of Abnormal Iron Metabolism on Osteoporosis. Biol Trace Elem Res 2020; 195:353-365. [PMID: 31473898 DOI: 10.1007/s12011-019-01867-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 08/08/2019] [Indexed: 12/16/2022]
Abstract
Iron is one of the important trace elements in life activities. Abnormal iron metabolism increases the incidence of many skeletal diseases, especially for osteoporosis. Iron metabolism plays a key role in the bone homeostasis. Disturbance of iron metabolism not only promotes osteoclast differentiation and apoptosis of osteoblasts but also inhibits proliferation and differentiation of osteoblasts, which eventually destroys the balance of bone remodeling. The strength and density of bone can be weakened by the disordered iron metabolism, which increases the incidence of osteoporosis. Clinically, compounds or drugs that regulate iron metabolism are used for the treatment of osteoporosis. The goal of this review summarizes the new progress on the effect of iron overload or deficiency on osteoporosis and the mechanism of disordered iron metabolism on osteoporosis. Explaining the relationship of iron metabolism with osteoporosis may provide ideas for clinical treatment and development of new drugs.
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Affiliation(s)
- Jingmin Che
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, Guangdong, China
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Jiancheng Yang
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Bin Zhao
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
- Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Ge Zhang
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, SAR, China
| | - Luyao Wang
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, SAR, China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, Shenzhen, 518000, Guangdong, China
| | - Peng Shang
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, Guangdong, China.
- Key Laboratory for Space Bioscience and Biotechnology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China.
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Chisari E, Shivappa N, Vyas S. Polyphenol-Rich Foods and Osteoporosis. Curr Pharm Des 2020; 25:2459-2466. [PMID: 31333106 DOI: 10.2174/1381612825666190722093959] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 07/20/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Osteoporosis is a metabolic disease affecting the bone mineral density and thus compromise the strength of the bones. Disease prevention through diet is the objective of the study and discussion. Among the several nutrients investigated, the intake of phenols seems to influence bone mineral density by acting as free radical scavengers, preventing oxidation-induced damage to bone cells. In addition, the growing understanding of the bone remodelling process supports the theory that inflammation significantly contributes to the etiopathogenesis of osteoporosis. METHODS To provide an overview of current evidence on polyphenol-rich foods and osteoporosis prevention we made a comprehensive review of the literature focusing on the state of art of the topic. RESULTS Some polyphenol-rich foods, including olive oil, fruit and vegetable, tea and soy, seem to be beneficial for preventing osteoporosis disease and its progression. The mechanism is still partly unknown and may involve different pathways which include inflammation and other disease reactions. CONCLUSIONS However, further research is needed to better understand the mechanisms regulating the molecular interaction between osteoporosis incidence and progression and polyphenol-rich foods. The current evidence suggests that dietary intervention with polyphenol rich foods may be useful to prevent incidence and progression of this condition.
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Affiliation(s)
- Emanuele Chisari
- University of Catania, Piazza Universita, 2, 95124, Catania CT, Italy
| | - Nitin Shivappa
- Cancer Prevention and Control Program, University of South Carolina, Columbia, SC 29208, United States.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, United States
| | - Shraddha Vyas
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Fl, 33612, United States
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26
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Meister ML, Mo H, Ji X, Shen CL. Tocotrienols in Bone Protection: Evidence from Preclinical Studies. EFOOD 2020. [DOI: 10.2991/efood.k.200427.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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27
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Domazetovic V, Marcucci G, Pierucci F, Bruno G, Di Cesare Mannelli L, Ghelardini C, Brandi ML, Iantomasi T, Meacci E, Vincenzini MT. Blueberry juice protects osteocytes and bone precursor cells against oxidative stress partly through SIRT1. FEBS Open Bio 2019; 9:1082-1096. [PMID: 31006177 PMCID: PMC6551492 DOI: 10.1002/2211-5463.12634] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 03/08/2019] [Accepted: 03/29/2019] [Indexed: 12/17/2022] Open
Abstract
Oxidative stress and abnormal osteocyte apoptosis are often related to dysregulation of bone turnover and chronic bone loss, and so fruit and vegetables with high antioxidant potential may play an important role in the prevention and/or management of osteoporosis. Osteocytes are the main regulators of bone remodelling. For the first time, we demonstrate here that blueberry juice (BJ), obtained from Vaccinium myrtillus, rich in polyphenols, shows antioxidant and antiosteoclastogenic properties in MLO‐Y4 osteocytes. We report that BJ prevents oxidative stress‐induced apoptosis and reverses the increase in receptor activator of nuclear factor κB ligand and sclerostin expression, crucial factors for osteoclast activation and bone resorption. BJ is also able to prevent oxidative stress‐induced cell cytotoxicity in bone marrow mesenchymal stromal cells (MSCs), which are considered to be an important tool for cell therapy in bone disorders. No significant difference in preventing these events was observed between BJ and blueberry dry extract containing equal amounts of total soluble polyphenols. We have also shown that blueberry acts as both an antioxidant and an activator of sirtuin type 1, a class III histone deacetylase involved in cell death regulation and considered a molecular target for blocking bone resorption without affecting osteoclast survival. Overall, these novel data obtained in osteocytes and MSCs may help us clarify the mechanisms by which blueberry counteracts oxidative stress‐induced damage in bone remodelling and osteogenesis at the cellular and molecular level. Our findings are consistent with the reported beneficial effects of blueberry on bone tissue reported in animal studies, which suggest that blueberry may be a useful supplement for the prevention and/or management of osteoporosis and osteogenic process.
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Affiliation(s)
- Vladana Domazetovic
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Gemma Marcucci
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Federica Pierucci
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Gennaro Bruno
- Department of Health Sciences, University of Florence, Italy
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, Italy
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, Italy
| | - Maria Luisa Brandi
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Teresa Iantomasi
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Elisabetta Meacci
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
| | - Maria Teresa Vincenzini
- Department of Biomedical Experimental and Clinical Sciences 'Mario Serio', University of Florence, Italy
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Xu H, Liu T, Hu L, Li J, Gan C, Xu J, Chen F, Xiang Z, Wang X, Sheng J. Effect of caffeine on ovariectomy-induced osteoporosis in rats. Biomed Pharmacother 2019; 112:108650. [DOI: 10.1016/j.biopha.2019.108650] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/29/2019] [Accepted: 01/29/2019] [Indexed: 01/08/2023] Open
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Daily Green Tea Infusions in Hypercalciuric Renal Stone Patients: No Evidence for Increased Stone Risk Factors or Oxalate-Dependent Stones. Nutrients 2019; 11:nu11020256. [PMID: 30678344 PMCID: PMC6412450 DOI: 10.3390/nu11020256] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/15/2019] [Accepted: 01/22/2019] [Indexed: 12/12/2022] Open
Abstract
Green tea is widely used as a ‘’healthy’’ beverage due to its high level of antioxidant polyphenol compounds. However tea is also known to contain significant amount of oxalate. The objective was to determine, in a cross-sectional observational study among a population of 273 hypercalciuric stone-formers referred to our center for metabolic evaluation, whether daily green tea drinkers (n = 41) experienced increased stone risk factors (especially for oxalate) compared to non-drinkers. Stone risk factors and stone composition were analyzed according to green tea status and sex. In 24-h urine collection, the comparison between green tea drinkers and non-drinkers showed no difference for stone risk factors such as urine oxalate, calcium, urate, citrate, and pH. In females, the prevalence of calcium oxalate dihydrate (COD) and calcium phosphate stones, assessed by infrared analysis (IRS) was similar between green tea drinkers and non-drinkers, whereas prevalence of calcium oxalate monohydrate (COM) stones was strikingly decreased in green tea drinkers (0% vs. 42%, p = 0.04), with data in accordance with a decreased oxalate supersaturation index. In males, stone composition and supersaturation indexes were similar between the two groups. Our data show no evidence for increased stone risk factors or oxalate-dependent stones in daily green tea drinkers.
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Chen ST, Kang L, Wang CZ, Huang PJ, Huang HT, Lin SY, Chou SH, Lu CC, Shen PC, Lin YS, Chen CH. (-)-Epigallocatechin-3-Gallate Decreases Osteoclastogenesis via Modulation of RANKL and Osteoprotegrin. Molecules 2019; 24:E156. [PMID: 30609798 PMCID: PMC6337469 DOI: 10.3390/molecules24010156] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 01/20/2023] Open
Abstract
Osteoporosis is the second most common epidemiologic disease in the aging population worldwide. Previous studies have found that frequent tea drinkers have higher bone mineral density and less hip fracture. We previously found that (-)-epigallocatechin gallate (EGCG) (20⁻100 µmol/L) significantly suppressed receptor activator of nuclear factor-kB ligand (RANKL)-induced osteoclastogenesis and pit formation via inhibiting NF-κB transcriptional activity and nuclear transport of NF-κB in RAW 264.7 cells and murine primary bone marrow macrophage cells. The most important regulation in osteoclastogenesis is the receptor activator of nuclear factor-kB/RANKL/osteoprotegrin (RANK/RANKL/OPG) pathway. In this study, we used the coculture of RAW 264.7 cells and the feeder cells, ST2, to evaluate how EGCG regulated the RANK/RANKL/OPG pathway in RAW 264.7 cells and ST2 cells. We found EGCG decreased the RANKL/OPG ratio in both mRNA expression and secretory protein levels and eventually decreased osteoclastogenesis by TRAP (+) stain osteoclasts and TRAP activity at low concentrations-1 and 10 µmol/L-via the RANK/RANKL/OPG pathway. The effective concentration can be easily achieved in daily tea consumption. Taken together, our results implicate that EGCG could be an important nutrient in modulating bone resorption.
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Affiliation(s)
- Shih-Tse Chen
- Department of Psychiatry, National Taiwan University Hospital Hsin-Chu Branch, Hsin Chu 30059, Taiwan.
| | - Lin Kang
- Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan.
| | - Chau-Zen Wang
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80701, Taiwan.
| | - Peng-Ju Huang
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Hsuan-Ti Huang
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, No.68, Zhonghua 3rd Rd., Qianjin Dist., Kaohsiung City 80145, Taiwan.
| | - Sung-Yen Lin
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Shih-Hsiang Chou
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Cheng-Chang Lu
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Po-Chih Shen
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Yi-Shan Lin
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
| | - Chung-Hwan Chen
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80701, Taiwan.
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, No.68, Zhonghua 3rd Rd., Qianjin Dist., Kaohsiung City 80145, Taiwan.
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Blackcurrant Supplementation Improves Trabecular Bone Mass in Young but Not Aged Mice. Nutrients 2018; 10:nu10111671. [PMID: 30400569 PMCID: PMC6266496 DOI: 10.3390/nu10111671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 10/30/2018] [Accepted: 11/03/2018] [Indexed: 12/21/2022] Open
Abstract
Due to deleterious side effects of currently available medications, the search for novel, safe, and effective preventive agents for improving bone health in aging continues and is urgently needed. This study aimed to determine whether dietary blackcurrants (BC), an anthocyanin-rich berry, can improve bone mass in a mouse model of age-related bone loss. Thirty-five female C57BL/6J mice, 3 months old (n = 20) and 18 months old (n = 15), were randomized to consume either a standard chow diet or a standard chow diet with 1% (w/w) BC for four months. Dual-energy X-ray absorptiometry, Micro computed tomography (µCT), and histomorphometric analyses were conducted to assess bone parameters on femurs. Biochemical assays were conducted to determine bone resorption, antioxidant activity, and inflammation in humerus homogenates. Trabecular bone volume (BV/TV) was significantly lower in aged mice compared to young mice (young control, 3.7 ± 0.4% vs aged control, 1.5 ± 0.5%, mean ± SEM (standard error of mean), p < 0.01; young BC, 5.3 ± 0.6% vs aged BC, 1.1 ± 0.3%, p < 0.001). µCT analysis revealed that BC supplementation increased trabecular BV/TV in young mice by 43.2% (p < 0.05) compared to controls. Histomorphometric analysis revealed a 50% increase, though this effect was not statistically significant (p = 0.07). The osteoblast surface increased by 82.5% in aged mice with BC compared to controls (p < 0.01). In humerus homogenates of young mice, BC consumption reduced C-telopeptide of type I collagen by 12.4% (p < 0.05) and increased glutathione peroxidase by 96.4% (p < 0.05). In humerus homogenates of aged mice, BC consumption increased catalase by 12% (p = 0.09). Aged mice had significantly elevated concentrations of tumor necrosis factor α (TNF-α), a pro-inflammatory cytokine contributing to bone resorption, which was reduced by 43.3% with BC consumption (p = 0.06). These results suggest that early consumption of BC may protect from aging-associated bone loss.
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Habitual Tea Consumption and Risk of Fracture in 0.5 Million Chinese Adults: A Prospective Cohort Study. Nutrients 2018; 10:nu10111633. [PMID: 30400175 PMCID: PMC6265708 DOI: 10.3390/nu10111633] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 01/08/2023] Open
Abstract
Background: Tea consumption may have favorable effects on risk of fracture. However, little is known about such association in Chinese adults. The aim of this study was to examine the association between tea consumption and risk of hospitalized fracture in Chinese adults. Methods: The present study included 453,625 participants from the China Kadoorie Biobank (CKB). Tea consumption was self-reported at baseline. Hospitalized fractures were ascertained through linkage with local health insurance claim databases. The results: During a median of 10.1 years of follow-up, we documented 12,130 cases of first-time any fracture hospitalizations, including 1376 cases of hip fracture. Compared with never tea consumers, daily tea consumption was associated with lower risk of any fracture (hazard ratio (HR): 0.88; 95% confidence interval (CI): 0.83, 0.93). Statistically significant reduced risk of hip fracture was shown among daily consumers who most commonly drank green tea (HR: 0.80; 95% CI: 0.65, 0.97) and those who had drunk tea for more than 30 years (HR: 0.68; 95% CI: 0.52, 0.87). Our conclusions: Habitual tea consumption was associated with moderately decreased risk of any fracture hospitalizations. Participants with decades of tea consumption and those who preferred green tea were also associated with lower risk of hip fracture.
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White Tea is More Effective in Preservation of Bone Loss in Adult Rats Co-Exposed to Lead and Cadmium Compared to Black, Red or Green Tea. ANNALS OF ANIMAL SCIENCE 2018. [DOI: 10.2478/aoas-2018-0026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Lead (Pb) and cadmium (Cd) are toxic metals occurring commonly in the human environment that show mutagenic, genotoxic and carcinogenic effects. Dietary components could prevent heavy metals intoxication by reducing their accumulation in the body. The purpose of the study was to check possible protective effect of regular consumption of white, black, red, or green tea on bone metabolism during long-term exposure to Pb and Cd in adult rats. The 12 week-long exposure to Pb and Cd (50 mg Pb and 7 mg Cd/kg of the diet) in a rat model was studied. Twelve-week-old adult male Wistar rats were randomly divided into a negative control group (Pb and Cd exposure without tea), a control (without Pb and Cd and teas), and groups co-exposed to Pb and Cd and supplemented with green, red, black, or white tea (n=12 each group). The experiment lasted for 12 weeks. The co-exposure to Pb and Cd led to the increase of bone resorption depending on the tea treatment, which was confirmed by the mechanical testing and histomorphometrical examination of cancellous bone. Pb and Cd influenced mechanical strength, reduced the densitometric and geometric parameters and the thickness of growth plate and articular cartilages. Concluding, white tea exerted the best protective effect on bone tissue and hyaline cartilage against heavy metal action.
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Choi MJ. Taurine May Modulate Bone in Cholesterol Fed Estrogen Deficiency-Induced Rats. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 975 Pt 2:1093-1102. [PMID: 28849525 DOI: 10.1007/978-94-024-1079-2_87] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Taurine is thought to affect bone in rats favorably. However, studies on the actions of this estrogen deficiency and high cholesterol diet factors on the bone metabolism are limited. In this study, the protective effect of taurine on bone was determined. Thirty-two 42 days old female SD rats were placed in individual stainless cages. Given to rats was fed to chow (Samyang Corporation, South Korea) and deionized water for a 4 days adaptation period. After the period of adaptation, Half of the rats were induced estrogen deficiency model by ovariectomy (OVX), and the left rats with sham-operated were used control (SHAM). For six weeks, the OVX and SHAM rats had separately a 2% taurine supplemented diet with ad libitum in both the water and the food. DEXA for small animals (PIXImus, GE Lunar co, Wisconsin) was used to determine spinal and femoral bone. The concentrations of serum calcium and phosphorus were also measured. The monitoring of bone formation was done by determining the serum ALP and osteocalcin. Urinary DPD the values were determined as index of bone resorption. Statistical measure was done with SAS (version 9.3). A lower overall intake of the daily food was observed in non-ovariectomized rats than in the OVX rats. At sacrifice, a much greater body weight was observed in ovariectomized group compare to non-operated group. That difference was absent in both fed taurine SHAM and OVX rats. Serum calcium and phosphorus were not statistically different by taurine supplementation. Urinary excretion of calcium was not effected by taurine supplementation. Serum ALP and was significantly decreased by taurine in OVX rats (p < 0.05). For the spine BMD and BMC, there was no difference among SHAM and OVX rats by taurine. Spine BMC per body weight of taurine groups were higher than control groups (p < 0.1). No significant difference was observed after taurine supplementation in femur BMD and BMC. The analysis of the results suggest that taurine supplementation modulates the bone mineral contents in postmenopausal model rats fed with high cholesterol diet.
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Affiliation(s)
- Mi-Ja Choi
- Department of Food and Nutrition, Keimyung University, Daegu, South Korea.
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Rajput R, Wairkar S, Gaud R. Nutraceuticals for better management of osteoporosis: An overview. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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Cao HL, Cai FY, Jiao WB, Liu C, Zhang N, Qiu HY, Rensing C, Lü J. Assessment of tea garden soils at An'xi County in southeast China reveals a mild threat from contamination of potentially harmful elements. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180050. [PMID: 30225003 PMCID: PMC6124080 DOI: 10.1098/rsos.180050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 07/06/2018] [Indexed: 05/08/2023]
Abstract
An extensive study of the spatial distribution characteristics of potentially harmful elements (PHEs) in tea (Camellia sinensis (L.) O. Kuntze) garden soils and ecological risk assessment at An'xi County, the birthplace of oolong tea in China, was implemented. A total of 78 soil samples were examined to determine the concentration of five PHEs (As, Cd, Cr, Hg and Pb), soil organic matter and pH by using geostatistical approaches combined with geographical information system analysis. All PHEs presented in the study area were slightly higher than their background values for provincial and national standards except Cr. Moreover, ecological risk assessment of PHEs in the tea garden soils at An'xi County was performed by means of the Håkanson method. The average ecological potential risk index (Er) of the five PHEs followed a descending order of Cd > Hg > Pb > As > Cr, and suggested a moderate ecological risk in the study area.
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Affiliation(s)
- Hai-Lei Cao
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Feng-Ying Cai
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Wen-Bin Jiao
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Cheng Liu
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Ning Zhang
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Hai-Yuan Qiu
- Fujian Monitoring Center of Geological Environment, Fuzhou 350001, People's Republic of China
| | - Christopher Rensing
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
| | - Jian Lü
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, People's Republic of China
- Samara Center for Theoretical Materials Science (SCTMS), Samara State Technical University, Molodogvardeyskaya St. 244, Samara 443100, Russia
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Dai Z, Jin A, Soh AZ, Ang LW, Yuan JM, Koh WP. Coffee and tea drinking in relation to risk of hip fracture in the Singapore Chinese Health Study. Bone 2018; 112:51-57. [PMID: 29660426 PMCID: PMC5970083 DOI: 10.1016/j.bone.2018.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/26/2018] [Accepted: 04/13/2018] [Indexed: 01/01/2023]
Abstract
Meta-analyses of studies conducted among Western populations suggest that coffee consumption does not affect osteoporotic fracture risk. However, experimental studies have shown that the effect of caffeine on bone health may depend on dosage. We examined the associations between consumption of coffee, tea and caffeine and risk of hip fracture in an Asian cohort. In a population-based prospective cohort of 63,257 Chinese men and women aged 45-74 years in Singapore, a validated semi-quantitative food frequency questionnaire was used to assess habitual consumption of coffee and tea at baseline. Cox proportional hazards regression models were used to estimate hazard ratio (HR) and 95% confidence interval (CI) for risk of hip fracture with adjustment for potential confounders. During a mean follow-up of 16.7 years, 2502 incident hip fracture cases were identified. Compared to coffee drinkers <1 cup/week, those who drank ≥4 cups/day had a statistically significant higher risk to develop hip fractures, the HR (95% CI) was 1.32 (1.07, 1.63) in the whole cohort analysis, 1.46 (1.01, 2.10) for men and 1.33 (1.02, 1.72) for women. Among postmenopausal women, compared to those who drank coffee <1 cup/week, drinking 2-3 cups/day was associated with the lowest risk [HR: 0.88 (0.76, 1.01)] and drinking ≥4 cups/day was associated with the highest risk [HR: 1.31 (1.00, 1.71)]. Similar associations with caffeine intake were found among postmenopausal women. Restricted spline analyses suggested a non-linear association between coffee/caffeine consumption and hip fracture risk in postmenopausal women (p for non-linearity ≤ 0.05). No association was found with tea consumption in either sex. These data suggest that drinking coffee ≥4 cups/day is associated with a higher hip fracture risk, while a moderate intake may alleviate risk in postmenopausal women. Future studies should corroborate these results to determine levels of optimal coffee consumption in relation to bone health.
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Affiliation(s)
- Zhaoli Dai
- Boston University School of Medicine, Clinical Epidemiology Research & Training Unit, USA.
| | - Aizhen Jin
- National Registry of Diseases Office, Health Promotion Board, Singapore
| | - Avril Zixin Soh
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Li-Wei Ang
- Epidemiology & Disease Control Division, Ministry of Health, Singapore
| | - Jian-Min Yuan
- Division of Cancer Control and Population Sciences, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Woon-Puay Koh
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore; Health Services and Systems Research, Duke-NUS Medical School, Singapore.
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Wang J, Tang L, Zhou H, Zhou J, Glenn TC, Shen CL, Wang JS. Long-term treatment with green tea polyphenols modifies the gut microbiome of female sprague-dawley rats. J Nutr Biochem 2018; 56:55-64. [PMID: 29454999 PMCID: PMC6022747 DOI: 10.1016/j.jnutbio.2018.01.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/01/2017] [Accepted: 01/10/2018] [Indexed: 12/16/2022]
Abstract
Green tea polyphenols (GTP) have been shown to exert a spectrum of health benefits to animals and humans. It is plausible that the beneficial effects of GTP are a result of its interaction with the gut microbiota. This study evaluated the effect of long-term treatment with GTP on the gut microbiota of experimental rats and the potential linkage between changes of the gut microbiota with the beneficial effects of GTP. Six-month-old Sprague-Dawley rats were randomly allocated into three dosing regimens (0, 0.5%, and 1.5% of GTP) and followed for 6 months. At the end of month 3 or month 6, half of the animals from each group were sacrificed and their colon contents were collected for microbiome analysis using 16S ribosomal RNA and shotgun metagenomic community sequencing. GTP treatment significantly decreased the biodiversity and modified the microbial community in a dose-dependent manner; similar patterns were observed at both sampling times. Multiple operational taxonomic units and phylotypes were modified: the phylotypes Bacteroidetes and Oscillospira, previously linked to the lean phenotype in human and animal studies, were enriched; and Peptostreptococcaceae previously linked to colorectal cancer phenotype was depleted in GTP treated groups in a dose-dependent manner. Several microbial gene orthologs were modified, among which genes related to energy production and conversion were consistently enriched in samples from month 6 in a dose-dependent manner. This study showed that long-term treatment with GTP induced a dose-dependent modification of the gut microbiome in experimental rats, which might be linked to beneficial effects of GTP.
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Affiliation(s)
- Jincheng Wang
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA; Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA
| | - Lili Tang
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA; Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA
| | - Hongyuan Zhou
- Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Jun Zhou
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA; Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA
| | - Travis C Glenn
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA; Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA
| | - Chwan-Li Shen
- Department of Pathology, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Jia-Sheng Wang
- Interdisciplinary Toxicology Program, University of Georgia, Athens, GA 30602, USA; Department of Environmental Health Science, University of Georgia, Athens, GA 30602, USA.
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Xu H, Yin D, Liu T, Chen F, Chen Y, Wang X, Sheng J. Tea polysaccharide inhibits RANKL-induced osteoclastogenesis in RAW264.7 cells and ameliorates ovariectomy-induced osteoporosis in rats. Biomed Pharmacother 2018; 102:539-548. [DOI: 10.1016/j.biopha.2018.03.125] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/20/2018] [Accepted: 03/20/2018] [Indexed: 01/29/2023] Open
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Minematsu A, Nishii Y, Imagita H, Sakata S. Long-Term Intake of Green Tea Extract Causes Mal-Conformation of Trabecular Bone Microarchitecture in Growing Rats. Calcif Tissue Int 2018; 102:358-367. [PMID: 29103160 DOI: 10.1007/s00223-017-0358-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/26/2017] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to examine the effects of green tea extract (GTE) intake on bone structural and physiological properties, such as bone mass, trabecular bone microarchitecture, cortical bone geometry, and bone mechanical strength, in growing rats. Four-week-old male Wistar rats were divided into the following four groups: standard diet feeding for 85 days (S-CON) or 170 days (L-CON), and GTE diet feeding for 85 days (S-GTE) or 170 days (L-GTE). At the end of the experiment, in addition to measurement of circulating bone formation/resorption markers, bone mass, trabecular bone microarchitecture, and cortical bone geometry were analyzed in the left femur, and bone mechanical strength of the right femur was measured. There was no difference in all bone parameters between the S-CON and S-GTE groups. On the other hand, the L-GTE group showed the decrease in some trabecular bone mass/microarchitecture parameters and no change in cortical bone mass/geometry parameters compared with the L-CON group, and consequently the reduction in bone weight corrected by body weight. There was no difference in bone formation/resorption markers and bone mechanical strength between the S-CON and S-GTE groups and also between the L-CON and L-GTE groups. However, serum leptin levels were significantly lower in the L-GTE group than in the L-CON group. Thus, the long-term GTE intake had negative effects on bone, especially trabecular bone loss and microarchitecture mal-conformation, in growing rats.
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Affiliation(s)
- Akira Minematsu
- Department of Physical Therapy, Faculty of Health Science, Kio University, 4-2-2 Umaminaka, Koryo-cho, Kitakatsuragi-gun, Nara, 635-0832, Japan.
| | - Yasue Nishii
- Department of Physical Therapy, Faculty of Health Science, Kio University, 4-2-2 Umaminaka, Koryo-cho, Kitakatsuragi-gun, Nara, 635-0832, Japan
| | - Hidetaka Imagita
- Department of Physical Therapy, Faculty of Health Science, Kio University, 4-2-2 Umaminaka, Koryo-cho, Kitakatsuragi-gun, Nara, 635-0832, Japan
| | - Susumu Sakata
- Department of Physiology, Nara Medical University, 840 Shijou-cho, Kashihara, Nara, 634-8521, Japan
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Huang H, Han GY, Jing LP, Chen ZY, Chen YM, Xiao SM. Tea Consumption Is Associated with Increased Bone Strength in Middle-Aged and Elderly Chinese Women. J Nutr Health Aging 2018; 22:216-221. [PMID: 29380848 DOI: 10.1007/s12603-017-0898-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Previous studies found that tea consumption was related to a reduction in the risks of some chronic diseases, but limited data are available on bone health. This study aimed to examine the associations of tea consumption with hip bone strength in Chinese women. DESIGN Cross-sectional study. SETTING The participants were from the ongoing Guangzhou Nutrition and Health Study. This was a cohort study started in 2008. The examination data conducted between June 2010 and December 2013 were used. PARTICIPANTS A total of 1,495 Chinese women aged more than 40 years were included. MEASUREMENTS Tea consumption, socio-demographic information and lifestyle habits were collected by a face-to-face questionnaire. Hip bone mineral density (BMD) and geometric parameters, i.e. cross-sectional area (CSA), section modulus (Z) and buckling ratio (BR), were generated by dual-energy X-ray absorptiometry. The associations of tea consumption with bone phenotypes were detected by analysis of covariance and multiple linear regression models after adjusting for age, body mass index, years since menopause, physical activity, dietary-protein intake, dietary-calcium intake, calcium tablet intake, drinking status and smoking status. RESULTS Tea drinkers (n = 732) had approximately 1.9% higher BMD (p < 0.05) and 3.6% lower BR (p < 0.05) than non-tea drinkers (n = 763). The dose-response relationships of BMD, BR or CSA with total tea consumption were identified (p-trend < 0.05). Tea drinking was found to be a significant and independent predictor of BMD (β = 0.068, p < 0.05) or BR (β = -0.079, p < 0.05). CONCLUSION Tea consumption was associated with increased bone strength in middle-aged and elderly Chinese women.
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Affiliation(s)
- H Huang
- Su-Mei Xiao and Yu-Ming Chen, Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Er Road, Guangzhou 510080, P. R. China, Tel: 86-20-87330151 and 86-20-87330605, Fax: 86-20-87330446, and
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Witczak A, Abdel-Gawad H, Zalesak M, Pohoryło A. Tracking residual organochlorine pesticides (OCPs) in green, herbal, and black tea leaves and infusions of commercially available tea products marketed in Poland. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2017; 35:479-486. [PMID: 29210611 DOI: 10.1080/19440049.2017.1411614] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The content of residual organochlorine pesticides (OCPs) was examined in green, herbal, and black tea leaves as well as in their infusions prepared from tea products marketed in the main supermarkets in Poland. It was found that the detected mean levels of organochlorine residues in tea leaves ranged from <LOD to 16.36 ng g-1 dry weight. Among hexachlorocyclohexane isomers, γ-HCH in green tea occurred in the highest concentrations. Among dichlorodiphenyltrichloroethane (DDT) metabolites the highest level of p,p'DDT (1.96 ng g-1 dw) was in green tea samples. The transfer of OCPs from tea leaves to brew was investigated. The present study revealed that during the infusion process, a significant percentage of the residues, particularly pesticides with high water solubility, were transferred to the infusions. The obtained results show that the percentage transfer of each pesticides from tea to the tea infusions ranged from 6.74% (heptachlor) to 86.6% (endrin). The detected residues were below current MRLs for these pesticides.
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Affiliation(s)
- Agata Witczak
- a Department of Toxicology , West Pomeranian University of Technology , Szczecin , Poland
| | - Hassan Abdel-Gawad
- b Applied Organic Chemistry Department, Chemical Industries Research Division , National Research Centre Scopus Affiliation ID 60014618 , Dokki , Egypt
| | - Michal Zalesak
- c Department of Environmental Protection Engineering , Tomas Bata University , Zlin , Czech Republic
| | - Anna Pohoryło
- a Department of Toxicology , West Pomeranian University of Technology , Szczecin , Poland
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Wang Y, Liu J, Pang Q, Tao D. Alpinumisoflavone protects against glucocorticoid-induced osteoporosis through suppressing the apoptosis of osteoblastic and osteocytic cells. Biomed Pharmacother 2017; 96:993-999. [PMID: 29203387 DOI: 10.1016/j.biopha.2017.11.136] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 01/21/2023] Open
Abstract
The long-term use of glucocorticoids is found to cause osteoporosis. This study is designed to evaluate the protective effect of alpinumisoflavone (AIF), a naturally occurring flavonoid compound, on dexamethasone(Dex)-induced osteoporosis. We use a rat model to investigate the apoptosis of osteoblastic and osteocytic cells. The results indicate that AIF effectively protects against dexamethasone-induced osteoporosis. Moreover, AIF effectively reversed dexamethasone-induced apoptosis in osteoblastic and osteocytic cells through inhibiting ROS overproduction and regulating the Nrf2 pathway. In conclusion, the AIF activated Nrf2 signaling pathway was observed to suppress Dex-induced ROS production in osteoblastic and osteocytic cells, which may explain its anti-osteoporotic effects against dexamethasone-induced osteoporosis.
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Affiliation(s)
- Yun Wang
- Department of Orthopedics, Ningbo No. 2 Hospital, Ningbo, 315104, China
| | - Jiangtao Liu
- Department of Orthopedics, Ningbo No. 2 Hospital, Ningbo, 315104, China
| | - Qingjiang Pang
- Department of Orthopedics, Ningbo No. 2 Hospital, Ningbo, 315104, China
| | - Dongying Tao
- Department of Human Morphology, Ningbo College of Health Science, No. 51 Xuefu Road, Ningbo, Zhejiang, 315104, China.
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Domazetovic V, Marcucci G, Iantomasi T, Brandi ML, Vincenzini MT. Oxidative stress in bone remodeling: role of antioxidants. ACTA ACUST UNITED AC 2017; 14:209-216. [PMID: 29263736 DOI: 10.11138/ccmbm/2017.14.1.209] [Citation(s) in RCA: 429] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
ROS are highly reactive molecules which consist of a number of diverse chemical species, including radical and non-radical oxygen species. Oxidative stress occurs as a result of an overproduction of ROS not balanced by an adequate level of antioxidants. The natural antioxidants are: thiol compounds among which GSH is the most representative, and non-thiol compounds such as polyphenols, vitamins and also various enzymes. Many diseases have been linked to oxidative stress including bone diseases among which one of the most important is the osteoporosis. The redox state changes are also related to the bone remodeling process which allows the continuous bone regeneration through the coordinated action of bone cells: osteoclasts, osteoblasts and osteocytes. Changes in ROS and/or antioxidant systems seem to be involved in the pathogenesis of bone loss. ROS induce the apoptosis of osteoblasts and osteocytes, and this favours osteoclastogenesis and inhibits the mineralization and osteogenesis. Excessive osteocyte apoptosis correlates with oxidative stress causing an imbalance in favor of osteoclastogenesis which leads to increased turnover of bone remodeling and bone loss. Antioxidants either directly or by counteracting the action of oxidants contribute to activate the differentiation of osteoblasts, mineralization process and the reduction of osteoclast activity. In fact, a marked decrease in plasma antioxidants was found in aged or osteoporotic women. Some evidence shows a link among nutrients, antioxidant intake and bone health. Recent data demonstrate the antioxidant properties of various nutrients and their influence on bone metabolism. Polyphenols and anthocyanins are the most abundant antioxidants in the diet, and nutritional approaches to antioxidant strategies, in animals or selected groups of patients with osteoporosis or inflammatory bone diseases, suggest the antioxidant use in anti-resorptive therapies for the treatment and prevention of bone loss.
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Affiliation(s)
- Vladana Domazetovic
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
| | - Gemma Marcucci
- Department of Surgery and Translational Medicine (Endocrinology Section), University of Florence, Florence, Italy
| | - Teresa Iantomasi
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
| | - Maria Luisa Brandi
- Department of Surgery and Translational Medicine (Endocrinology Section), University of Florence, Florence, Italy
| | - Maria Teresa Vincenzini
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
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Shen CL, Klein A, Chin KY, Mo H, Tsai P, Yang RS, Chyu MC, Ima-Nirwana S. Tocotrienols for bone health: a translational approach. Ann N Y Acad Sci 2017; 1401:150-165. [PMID: 28891093 DOI: 10.1111/nyas.13449] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/04/2017] [Accepted: 07/17/2017] [Indexed: 02/03/2023]
Abstract
Osteoporosis, a degenerative bone disease, is characterized by low bone mass and microstructural deterioration of bone tissue resulting in aggravated bone fragility and susceptibility to fractures. The trend of extended life expectancy is accompanied by a rise in the prevalence of osteoporosis and concomitant complications in the elderly population. Epidemiological evidence has shown an association between vitamin E consumption and the prevention of age-related bone loss in elderly women and men. Animal studies show that ingestion of vitamin E, especially tocotrienols, may benefit bone health in terms of maintaining higher bone mineral density and improving bone microstructure and quality. The beneficial effects of tocotrienols on bone health appear to be mediated via antioxidant/anti-inflammatory pathways and/or 3-hydroxy-3-methylglutaryl coenzyme A mechanisms. We discuss (1) an overview of the prevalence and etiology of osteoporosis, (2) types of vitamin E (tocopherols versus tocotrienols), (3) findings of tocotrienols and bone health from published in vitro and animal studies, (4) possible mechanisms involved in bone protection, and (5) challenges and future direction for research.
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Affiliation(s)
- Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Annika Klein
- Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, Texas
| | - Kok-Yong Chin
- Department of Pharmacology, Universiti Kebangasaan Malaysia, Kuala Lumpur, Malaysia
| | - Huanbiao Mo
- Department of Nutrition, Byrdine F. Lewis School of Nursing and Health Professions, Georgia State University, Atlanta, Georgia
| | - Peihsuan Tsai
- School of Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas
| | - Rong-Sen Yang
- Department of Orthopedics, School of Medicine, National Taiwan University Hospital, Taipei City, Taiwan
| | - Ming-Chien Chyu
- Graduate Healthcare Engineering, Whitacre College of Engineering, Texas Tech University, Lubbock, Texas
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Tea consumption may decrease the risk of osteoporosis: an updated meta-analysis of observational studies. Nutr Res 2017. [DOI: 10.1016/j.nutres.2017.02.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Liu T, Ding S, Yin D, Cuan X, Xie C, Xu H, Wang X, Sheng J. Pu-erh Tea Extract Ameliorates Ovariectomy-Induced Osteoporosis in Rats and Suppresses Osteoclastogenesis In Vitro. Front Pharmacol 2017; 8:324. [PMID: 28620304 PMCID: PMC5450042 DOI: 10.3389/fphar.2017.00324] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/15/2017] [Indexed: 01/19/2023] Open
Abstract
Background and Objective: Tea drinking is associated with positive effects on bone health and may protect against osteoporosis, especially in elderly women. Pu-erh tea has many beneficial effects on human health; however, whether Pu-erh tea has anti-osteoporotic potential remains unclear. Thus, we investigated the effects of Pu-erh tea extract (PTE) on ovariectomy-induced osteoporosis in rats and on osteoclastogenesis in vitro. Methods: Female Wistar rats were divided into six groups: the sham, model, and Xian-Ling-Gu-Bao capsule (XLGB) groups, and the low-, medium-, and high-dose PTE groups. Ovariectomized (OVX) rats were used as an animal model of osteoporosis. The animals were intragastrically administered distilled water, XLGB, or different concentrations of PTE for 13 weeks. Body weight, blood biochemical indicators, relative organ coefficients, femoral bone mineral density (BMD), bone biomechanical properties, and bone microarchitecture were examined and analyzed. Additionally, the in vitro effects of PTE on osteoclastic activities were investigated using the RAW 264.7 cell line as an osteoclast differentiation model. The effects of PTE on osteoclast differentiation and the expression of osteoclast-specific genes and proteins were determined. Results: PTE reduced OVX-induced body weight gain after 6 weeks of treatment, and the high-dose exerted a significant effect. High-dose PTE significantly ameliorated OVX-induced estradiol (E2) deficiency. PTE treatment maintained calcium and phosphorus homeostasis and improved other blood biochemical parameters to various degrees. In addition, PTE treatment improved organ coefficients of the femur, uterus, and vagina and improved femoral BMD and bone biomechanical properties. PTE treatment strikingly ameliorated bone microarchitecture. Moreover, in the in vitro studies, osteoclast differentiation using the differentiation cell model was significantly inhibited by PTE without cytotoxic effects. Additionally, PTE efficaciously suppressed the expression of key osteoclast-specific genes and proteins. Conclusion: PTE can ameliorate ovariectomy-induced osteoporosis in rats and suppress osteoclastogenesis in vitro.
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Affiliation(s)
- Titi Liu
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Shihua Ding
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Dan Yin
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Xiangdan Cuan
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Chuanqi Xie
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Huanhuan Xu
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Food Science and Technology, Yunnan Agricultural UniversityKunming, China
| | - Xuanjun Wang
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,College of Longrun Pu-erh Tea, Yunnan Agricultural UniversityKunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanKunming, China
| | - Jun Sheng
- Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural UniversityKunming, China.,Tea Research Center of YunnanKunming, China.,State Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanKunming, China
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Brzóska MM, Roszczenko A, Rogalska J, Gałażyn-Sidorczuk M, Mężyńska M. Protective Effect of Chokeberry (Aronia melanocarpa L.) Extract against Cadmium Impact on the Biomechanical Properties of the Femur: A Study in a Rat Model of Low and Moderate Lifetime Women Exposure to This Heavy Metal. Nutrients 2017; 9:E543. [PMID: 28587093 PMCID: PMC5490522 DOI: 10.3390/nu9060543] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 05/16/2017] [Accepted: 05/23/2017] [Indexed: 11/17/2022] Open
Abstract
The hypothesis that the consumption of Aronia melanocarpa berries (chokeberries) extract, recently reported by us to improve bone metabolism in female rats at low-level and moderate chronic exposure to cadmium (1 and 5 mg Cd/kg diet for up to 24 months), may increase the bone resistance to fracture was investigated. Biomechanical properties of the neck (bending test with vertical head loading) and diaphysis (three-point bending test) of the femur of rats administered 0.1% aqueous chokeberry extract (65.74% of polyphenols) or/and Cd in the diet (1 and 5 mg Cd/kg) for 3, 10, 17, and 24 months were evaluated. Moreover, procollagen I was assayed in the bone tissue. The low-level and moderate exposure to Cd decreased the procollagen I concentration in the bone tissue and weakened the biomechanical properties of the femoral neck and diaphysis. Chokeberry extract administration under the exposure to Cd improved the bone collagen biosynthesis and femur biomechanical properties. The results allow for the conclusion that the consumption of chokeberry products under exposure to Cd may improve the bone biomechanical properties and protect from fracture. This study provides support for Aronia melanocarpa berries being a promising natural agent for skeletal protection under low-level and moderate chronic exposure to Cd.
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Affiliation(s)
- Małgorzata M Brzóska
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.
| | - Alicja Roszczenko
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.
| | - Joanna Rogalska
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.
| | - Małgorzata Gałażyn-Sidorczuk
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.
| | - Magdalena Mężyńska
- Department of Toxicology, Medical University of Bialystok, Adama Mickiewicza 2C street, 15-222 Bialystok, Poland.
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Sokolis DP, Dimitriou CA, Lelovas P, Kostomitsopoulos NG, Dontas IA. Effect of ovariectomy and Sideritis euboea extract administration on large artery mechanics, morphology, and structure in middle-aged rats. Biorheology 2017; 54:1-23. [PMID: 28339395 DOI: 10.3233/bir-16113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Arterial function is regulated by estrogen, but no consistent pattern of arterial mechanical remodeling in response to depleted estrogen levels is available. OBJECTIVE To examine long-term effects of ovariectomy (OVX) on the mechanical properties, morphology, and histological structure of the carotid artery in middle-aged rats and a potentially protective effect of Sideritis euboea extract (SID), commonly consumed as "mountain tea". METHODS 10-month-old female Wistar rats were allocated into control (sham-operated), OVX, OVX+SID, and OVX+MALT (maltodextrin; excipient used for dilution of SID) groups. They were sacrificed after 6 months and their carotid arteries were submitted to inflation/extension tests and to dimensional and histological evaluation. RESULTS Remodeling in OVX rats was characterized by a decreased in situ axial extension ratio, along with increased opening angle, thickness, and area of the vessel wall and of its medial layer, but unchanged lumen diameter. Compositional changes involved increased elastin/collagen densities. Characterization by the "four-fiber" microstructure-motivated model revealed similar in situ biaxial response of carotid arteries in OVX and control rats. CONCLUSIONS Carotid artery remodeling in OVX rats was largely consistent with hypertensive remodeling, despite the minor arterial pressure changes found, and was not altered by administration of SID, despite previous evidence of its osteo-protective effect.
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Affiliation(s)
- Dimitrios P Sokolis
- Laboratory of Biomechanics, Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Constantinos A Dimitriou
- Laboratory of Biomechanics, Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Pavlos Lelovas
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos G Kostomitsopoulos
- Laboratory Animal Facility, Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Ismene A Dontas
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Tao J, Shen X, Ai Y, Han X. Tea polyphenols protect against ischemia/reperfusion-induced liver injury in mice through anti-oxidative and anti-apoptotic properties. Exp Ther Med 2016; 12:3433-3439. [PMID: 27882175 DOI: 10.3892/etm.2016.3789] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 01/19/2016] [Indexed: 12/19/2022] Open
Abstract
Tea polyphenols (TPs), which are derived from tea extracts, are a class of chemicals containing polyphenol hydroxyls that have been observed to have strong anti-oxidative properties. Previous studies have demonstrated that TP can protect against hepatic ischemia/reperfusion (I/R) injury; however, the underlying mechanism remains unknown. In the present study, the mechanism underlying TPs protective effects against I/R-induced liver damage was investigated, focusing on its anti-oxidative and anti-apoptotic bioactivities. C57BL/6 mice were used to establish a hepatic I/R-induced injury model, and liver injury was analyzed using a biochemical assay. The results from the current study demonstrated that the serum expression levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were significantly increased in mice following hepatic I/R injury, while the ratio of hepatic glutathione (GSH)/oxidized GSH (GSSG) was reduced, indicating that liver damage had occurred. In mice that were orally administered with TP (50 mg/kg) 1 h prior to I/R-induced injury, the extent of liver injury was significantly attenuated. It was also observed that I/R injury significantly decreased the mRNA and protein expression levels of cytokine-inducible nitric oxide synthase in liver tissues, and this was also attenuated by pretreatment with TP. Furthermore, pretreatment with TP significantly attenuated the I/R-induced increase in liver cell apoptosis, and the expression level and activity of pro-apoptotic proteins in the liver, indicating that I/R-induced liver cell apoptosis is inhibited by TP. In conclusion, the results in the present study suggest that TP protects against hepatic I/R-induced injury by inhibiting I/R-induced oxidative damage and liver cell apoptosis.
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Affiliation(s)
- Jin Tao
- Department of Nephrology, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Xinhong Shen
- Department of Nephrology, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Yonghong Ai
- Blood Purification Room, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
| | - Xiaojing Han
- Department of Nephrology, Xinxiang Central Hospital, Xinxiang, Henan 453000, P.R. China
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