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Miao Y, Zhao L, Lei S, Zhao C, Wang Q, Tan C, Peng C, Gong J. Caffeine regulates both osteoclast and osteoblast differentiation via the AKT, NF-κB, and MAPK pathways. Front Pharmacol 2024; 15:1405173. [PMID: 38939843 PMCID: PMC11208461 DOI: 10.3389/fphar.2024.1405173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 05/24/2024] [Indexed: 06/29/2024] Open
Abstract
Background: Although caffeine generally offers benefits to human health, its impact on bone metabolism remains unclear. Aim and Methods: This study aimed to systematically evaluate the long-term effects of caffeine administration on osteoclasts, osteoblasts, and ovariectomy-induced postmenopausal osteoporosis (OP). Results: Our in vitro findings revealed that 3.125 and 12.5 μg/mL caffeine inhibited RANKL-mediated osteoclastogenesis in RAW 264.7 cells through the MAPK and NF-κB pathways, accompanied by the inactivation of nuclear translocation of nuclear factor NFATc1. Similarly, 3.125 and 12.5 μg/mL of caffeine modulated MC3T3-E1 osteogenesis via the AKT, MAPK, and NF-κB pathways. However, 50 μg/mL of caffeine promoted the phosphorylation of IκBα, P65, JNK, P38, and AKT, followed by the activation of NFATc1 and the inactivation of Runx2 and Osterix, ultimately disrupting the balance between osteoblastogenesis and osteoclastogenesis. In vivo studies showed that gavage with 55.44 mg/kg caffeine inhibited osteoclastogenesis, promoted osteogenesis, and ameliorated bone loss in ovariectomized mice. Conclusion: Conversely, long-term intake of high-dose caffeine (110.88 mg/kg) disrupted osteogenesis activity and promoted osteoclastogenesis, thereby disturbing bone homeostasis. Collectively, these findings suggest that a moderate caffeine intake (approximately 400 mg in humans) can regulate bone homeostasis by influencing both osteoclasts and osteoblasts. However, long-term high-dose caffeine consumption (approximately 800 mg in humans) could have detrimental effects on the skeletal system.
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Affiliation(s)
- Yue Miao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
- Medicinal Plants Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
| | - Lei Zhao
- College of Science, Yunnan Agricultural University, Kunming, China
| | - Shuwen Lei
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chunyan Zhao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Qiuping Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chao Tan
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chunxiu Peng
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, China
| | - Jiashun Gong
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
- Agro-Products Processing Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
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Yang L, Peng Y, Wang Y. One-pot hydrothermal synthesis of noble-metal-free NiS on Zn 0.5Cd 0.5S nanosheet photocatalysts for high H 2 evolution from water under visible light. Dalton Trans 2024; 53:2653-2664. [PMID: 38224267 DOI: 10.1039/d3dt03765g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
At present, the rational design and facile synthesis of highly active and low-cost photocatalysts are still facing great challenges. Herein, a series of Zn0.5Cd0.5S/NiS (x mol%) composite photocatalysts have been synthesized via a simple and mild one-pot hydrothermal method. Compared with pure Zn0.5Cd0.5S, the NiS-loaded samples exhibit enhanced photocatalytic hydrogen generation performance, in which the Zn0.5Cd0.5S/NiS-5% sample has the highest H2 production rate of 10 855 ± 461 μmol h-1 g-1 with a quantum yield of 11.82% at 365 nm, which is almost 6.3 times higher than that of pristine Zn0.5Cd0.5S. The high activity of the Zn0.5Cd0.5S/NiS nanosheets may be attributed to their distinct nanostructure, including a short transfer distance of photoinduced charge carriers, a large number of unsaturated surface atoms, and a large surface area. Moreover, the added NiS nanoparticles served as an effective cocatalyst to promote photoinduced electron transfer and enhance the surface kinetics of H2 evolution. Our work provides a simple and effective route for the preparation of sulphur-based photocatalysts, which can significantly improve the efficiency of hydrogen production from water.
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Affiliation(s)
- Linfen Yang
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China.
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou, 730000, China
| | - Yong Peng
- Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China.
- School of Materials and Energy, or Electron Microscopy Centre of Lanzhou University, Lanzhou, 730000, China
| | - Yuhua Wang
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, China.
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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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Al-Azab M, Idiiatullina E, Safi M, Hezam K. Enhancers of mesenchymal stem cell stemness and therapeutic potency. Biomed Pharmacother 2023; 162:114356. [PMID: 37040673 DOI: 10.1016/j.biopha.2023.114356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 04/13/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent stromal cells that can differentiate into a range of cell types, including osteoblasts, chondrocytes, myocytes, and adipocytes. Multiple preclinical investigations and clinical trials employed enhanced MSCs-dependent therapies in treatment of inflammatory and degenerative diseases. They have demonstrated considerable and prospective therapeutic potentials even though the large-scale use remains a problem. Several strategies have been used to improve the therapeutic potency of MSCs in cellular therapy. Treatment of MSCs utilizing pharmaceutical compounds, cytokines, growth factors, hormones, and vitamins have shown potential outcomes in boosting MSCs' stemness. In this study, we reviewed the current advances in enhancing techniques that attempt to promote MSCs' therapeutic effectiveness in cellular therapy and stemness in vivo with potential mechanisms and applications.
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Affiliation(s)
- Mahmoud Al-Azab
- Department of Immunology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China.
| | - Elina Idiiatullina
- Department of Immunology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou 510623, China; Department of Therapy and Nursing, Bashkir State Medical University, Ufa 450008, Russia
| | - Mohammed Safi
- Department of Respiratory Diseases, Shandong Second Provincial General Hospital, Shandong University, Shandong, China
| | - Kamal Hezam
- Nankai University School of Medicine, Tianjin 300071, China; Department of Microbiology, Faculty of Applied Science, Taiz University, 6350 Taiz, Yemen
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Lu M, He X, Jiao Z, Hu Z, Guo Z, Dai S, Wang H, Xu D. The upregulation of glutamate decarboxylase 67 against hippocampal excitability damage in male fetal rats by prenatal caffeine exposure. ENVIRONMENTAL TOXICOLOGY 2022; 37:2703-2717. [PMID: 35917217 DOI: 10.1002/tox.23630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/25/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
As a kind of xanthine alkaloid, caffeine is widely present in beverages, food, and analgesic drugs. Our previous studies have shown that prenatal caffeine exposure (PCE) can induce programmed hypersensitivity of the hypothalamic-pituitary-adrenal (HPA) axis in offspring rats, which is involved in developing many chronic adult diseases. The present study further examined the potential molecular mechanism and toxicity targets of hippocampal dysfunction, which might mediate the programmed hypersensitivity of the HPA axis in offspring. Pregnant rats were intragastrically administered with 0, 30, and 120 mg/kg/day caffeine from gestational days (GD) 9-20, and the fetal rats were extracted at GD20. Rat fetal hippocampal H19-7/IGF1R cell line was treated with caffeine, adenosine A2A receptor (A2AR) agonist (CGS-21680) or adenylate cyclase agonist (forskolin) plus caffeine. Compared with the control group, hippocampal neurons of male fetal rats by PCE displayed increased apoptosis and reduced synaptic plasticity, whereas glutamate decarboxylase 67 (GAD67) expression was increased. Moreover, the expression of A2AR was down-regulated, PCE inhibited the cAMP/PKA/CREB/BDNF/TrkB pathway. Furthermore, the results in vitro were consistent with the in vivo study. Both CGS21680 and forskolin could reverse the above alteration caused by caffeine. These results indicated that PCE inhibits the BDNF pathway and mediates the hippocampus's glutamate (Glu) excitotoxicity. The compensatory up-regulation of GAD67 unbalanced the Glu/gamma-aminobutyric acid (GABA)ergic output, leading to the impaired negative feedback to the hypothalamus and hypersensitivity of the HPA axis.
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Affiliation(s)
- Mengxi Lu
- Department of Pharmacology, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
| | - Xia He
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Zhexiao Jiao
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Zewen Hu
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Zijing Guo
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Shiyun Dai
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Hui Wang
- Department of Pharmacology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Dan Xu
- Department of Pharmacology, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
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Zhou Y, Wang C, Si J, Wang B, Zhang D, Ding D, Zhang J, Wang H. Melatonin up-regulates bone marrow mesenchymal stem cells osteogenic action but suppresses their mediated osteoclastogenesis via MT 2 -inactivated NF-κB pathway. Br J Pharmacol 2020; 177:2106-2122. [PMID: 31900938 DOI: 10.1111/bph.14972] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 11/20/2019] [Accepted: 12/20/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE Melatonin is a neurohormone involved in bone homeostasis. Melatonin directs bone remodelling and the role of bone marrow mesenchymal stem cells (BMMSCs) in the regulating melatonin-mediated bone formation-resorption balance remains undefined. EXPERIMENTAL APPROACH Osteoporosis models were established and bone tissue and serum were collected to test the effects of melatonin on bone homeostasis. Melatonin receptors were knocked down, the NF-κB signalling pathway and receptor activator of NF-κB ligand (RANKL) expression were investigated. Communication between bone marrow mesenchymal stem cells and osteoclasts was detected with direct-contact or indirect-contact system. KEY RESULTS Bone loss and microstructure disorder in mice were reversed after melatonin treatment, as a result of anabolic and anti-resorptive effects. In vitro, a physiological (low) concentration of melatonin promoted the bone marrow mesenchymal stem cells, osteogenic lineage commitment and extracellular mineralization but had no impact on extracellular matrix synthesis. After MT knockdown, especially MT2 , the positive effects of melatonin on osteogenesis were attenuated. The canonical NF-κB signalling pathway was the first discovered downstream signalling pathway after MT receptor activation and was found to be down-regulated by melatonin during osteogenesis. Melatonin suppressed BMMSC-mediated osteoclastogenesis by inhibiting RANKL production in BMMSCs and this effect only occurred when BMMSCs and osteoclast precursors were co-cultured in an indirect-contact manner. CONCLUSION AND IMPLICATIONS Our work suggests that melatonin plays a crucial role in bone balance, significantly accelerates the osteogenic differentiation of bone marrow mesenchymal stem cells by suppressing the MT2 -dependent NF-κB signalling pathway, and down-regulates osteoclastogenesis via RANKL paracrine secretion.
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Affiliation(s)
- Yi Zhou
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Chaowei Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Jinyan Si
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Baixiang Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Denghui Zhang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Ding Ding
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Jian Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Huiming Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
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