1
|
Cai L. Invited Perspective: New Insight into Cadmium-Related Osteoporosis Yields Hope for Prevention and Therapy. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:61301. [PMID: 38896781 PMCID: PMC11218703 DOI: 10.1289/ehp15263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024]
Affiliation(s)
- Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville (U of L) School of Medicine, Louisville, Kentucky, USA
- Department of Radiation Oncology, U of L School of Medicine, Louisville, Kentucky, USA
- Department of Pharmacology and Toxicology, U of L School of Medicine, Louisville, Kentucky, USA
| |
Collapse
|
2
|
Li X, Cai Z, Yang F, Wang Y, Pang X, Sun J, Li X, Lu Y. Broccoli Improves Lipid Metabolism and Intestinal Flora in Mice with Type 2 Diabetes Induced by HFD and STZ Diet. Foods 2024; 13:273. [PMID: 38254574 PMCID: PMC10814524 DOI: 10.3390/foods13020273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/06/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Globally, type 2 diabetes (T2DM) is on the rise. Maintaining a healthy diet is crucial for both treating and preventing T2DM.As a common vegetable in daily diet, broccoli has antioxidant, anti-inflammatory and anticarcoma physiological activities. We developed a mouse model of type 2 diabetes and carried out a systematic investigation to clarify the function of broccoli in reducing T2DM symptoms and controlling intestinal flora. The findings demonstrated that broccoli could successfully lower fasting blood glucose (FBG), lessen insulin resistance, regulate lipid metabolism, lower the levels of TC, TG, LDL-C, and MDA, stop the expression of IL-1β and IL-6, and decrease the harm that diabetes causes to the pancreas, liver, fat, and other organs and tissues. Furthermore, broccoli altered the intestinal flora's makeup in mice with T2DM. At the genus level, the relative abundance of Allobaculum decreased, and that of Odoribacter and Oscillospira increased; At the family level, the relative abundances of Odoribacteraceae, Rikenellaceae and S24-7 decreased, while the relative abundances of Erysipelotrichaceae and Rikenellaceae increased.
Collapse
Affiliation(s)
- Xin Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
- Priority Academic Program, Development of Jiangsu Higher Education Institutions (PAPD), Nanjing 210023, China
| | - Zifan Cai
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| | - Feiyu Yang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
| | - Yunfan Wang
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| | - Xinyi Pang
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| | - Jing Sun
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| | - Xiangfei Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| | - Yingjian Lu
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China; (X.L.); (Z.C.); (Y.W.); (X.P.); (J.S.); (Y.L.)
| |
Collapse
|
3
|
Che J, Yang X, Jin Z, Xu C. Nrf2: A promising therapeutic target in bone-related diseases. Biomed Pharmacother 2023; 168:115748. [PMID: 37865995 DOI: 10.1016/j.biopha.2023.115748] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 10/24/2023] Open
Abstract
Nuclear factor erythroid-2-related factor 2 (Nrf2) plays an important role in maintaining cellular homeostasis, as it suppresses cell damage caused by external stimuli by regulating the transcription of intracellular defense-related genes. Accumulating evidence has highlighted the crucial role of reduction-oxidation (REDOX) imbalance in the development of bone-related diseases. Nrf2, a transcription factor linked to nuclear factor-erythrocyte 2, plays a pivotal role in the regulation of oxidative stress and induction of antioxidant defenses. Therefore, further investigation of the mechanism and function of Nrf2 in bone-related diseases is essential. Considerable evidence suggests that increased nuclear transcription of Nrf2 in response to external stimuli promotes the expression of intracellular antioxidant-related genes, which in turn leads to the inhibition of bone remodeling imbalance, improved fracture recovery, reduced occurrence of osteoarthritis, and greater tumor resistance. Certain natural extracts can selectively target Nrf2, potentially offering therapeutic benefits for osteogenic arthropathy. In this article, the biological characteristics of Nrf2 are reviewed, the intricate interplay between Nrf2-regulated REDOX imbalance and bone-related diseases is explored, and the potential preventive and protective effects of natural products targeting Nrf2 in these diseases are elucidated. A comprehensive understanding of the role of Nrf2 in the development of bone-related diseases provides valuable insights into clinical interventions and can facilitate the discovery of novel Nrf2-targeting drugs.
Collapse
Affiliation(s)
- Jingmin Che
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China; Shaanxi Engineering Research Center of Cell Immunology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China.
| | - Xiaoli Yang
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China; Shaanxi Engineering Research Center of Cell Immunology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Zhankui Jin
- Department of Orthopedics, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China.
| | - Cuixiang Xu
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China; Shaanxi Engineering Research Center of Cell Immunology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| |
Collapse
|
4
|
Treasure K, Harris J, Williamson G. Exploring the anti-inflammatory activity of sulforaphane. Immunol Cell Biol 2023; 101:805-828. [PMID: 37650498 DOI: 10.1111/imcb.12686] [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: 03/20/2023] [Revised: 07/24/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
Dysregulation of innate immune responses can result in chronic inflammatory conditions. Glucocorticoids, the current frontline therapy, are effective immunosuppressive drugs but come with a trade-off of cumulative and serious side effects. Therefore, alternative drug options with improved safety profiles are urgently needed. Sulforaphane, a phytochemical derived from plants of the brassica family, is a potent inducer of phase II detoxification enzymes via nuclear factor-erythroid factor 2-related factor 2 (NRF2) signaling. Moreover, a growing body of evidence suggests additional diverse anti-inflammatory properties of sulforaphane through interactions with mediators of key signaling pathways and inflammatory cytokines. Multiple studies support a role for sulforaphane as a negative regulator of nuclear factor kappa-light chain enhancer of activated B cells (NF-κB) activation and subsequent cytokine release, inflammasome activation and direct regulation of the activity of macrophage migration inhibitory factor. Significantly, studies have also highlighted potential steroid-sparing activity for sulforaphane, suggesting that it may have potential as an adjunctive therapy for some inflammatory conditions. This review discusses published research on sulforaphane, including proposed mechanisms of action, and poses questions for future studies that might help progress our understanding of the potential clinical applications of this intriguing molecule.
Collapse
Affiliation(s)
- Katie Treasure
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
- Victorian Heart Hospital, Monash University, Clayton, VIC, Australia
| | - James Harris
- Biomedical Manufacturing, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, VIC, Australia
- Centre for Inflammatory Diseases, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
| | - Gary Williamson
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences at Monash Health, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, VIC, Australia
- Victorian Heart Hospital, Monash University, Clayton, VIC, Australia
| |
Collapse
|
5
|
Zhang G, Liu Z, Li Z, Zhang B, Yao P, Qiao Y. Therapeutic approach of natural products that treat osteoporosis by targeting epigenetic modulation. Front Genet 2023; 14:1182363. [PMID: 37287533 PMCID: PMC10242146 DOI: 10.3389/fgene.2023.1182363] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/26/2023] [Indexed: 06/09/2023] Open
Abstract
Osteoporosis (OP) is a metabolic disease that affects bone, resulting in a progressive decrease in bone mass, quality, and micro-architectural degeneration. Natural products have become popular for managing OP in recent years due to their minimal adverse side effects and suitability for prolonged use compared to chemically synthesized products. These natural products are known to modulate multiple OP-related gene expressions, making epigenetics an important tool for optimal therapeutic development. In this study, we investigated the role of epigenetics in OP and reviewed existing research on using natural products for OP management. Our analysis identified around twenty natural products involved in epigenetics-based OP modulation, and we discussed potential mechanisms. These findings highlight the clinical significance of natural products and their potential as novel anti-OP therapeutics.
Collapse
Affiliation(s)
- Guokai Zhang
- Binzhou Hospital of Traditional Chinese Medicine, Binzhou, China
| | - Zhenying Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zihan Li
- The First Affiliated Hospital of Shandong First Medical University Qianfoshan Hospital of Shandong Province, Jinan, China
| | - Bing Zhang
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Pengyu Yao
- Shandong Laboratory of Engineering Technology Suzhou Biomedical Engineering and Technology Chinese Academy of Sciences, Jinan, China
- Jinan Guoke Medical Engineering and Technology Development Company, Jinan, China
| | - Yun Qiao
- Qilu Hospital of Shandong University, Jinan, China
| |
Collapse
|
6
|
Wang YX, Dai W, Li YZ, Wu ZY, Kan YQ, Zeng HC, He QZ. Bisphenol S induces oxidative stress-mediated impairment of testosterone synthesis by inhibiting the Nrf2/HO-1 signaling pathway. J Biochem Mol Toxicol 2023; 37:e23273. [PMID: 36541330 DOI: 10.1002/jbt.23273] [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: 03/29/2022] [Revised: 09/01/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022]
Abstract
Bisphenol S (BPS) is an environmental endocrine disruptor widely used in industrial production. BPS induces oxidative stress and exhibits male reproductive toxicity in mice, but the mechanisms by which BPS impairs steroid hormone synthesis are not fully understood. Nuclear factor erythroid 2-related factor 2(Nrf2)/HO-1 signaling is a key pathway in improving cellular antioxidant defense capacities. Therefore, this study explored the effects of exposure to BPS on testosterone synthesis in adult male mice and its mechanisms with regard to the Nrf2/HO-1 signaling pathway. Adult male C57BL/6 mice were orally exposed to BPS (2, 20, and 200 mg/kg BW) with sesame oil as a vehicle (0.1 ml/10 g BW) per day for 28 consecutive days. The results showed that compared with the control group, serum testosterone levels were substantially reduced in the 20 and 200 mg/kg BPS treatment groups, and testicular testosterone levels were reduced in all BPS treatment groups. These changes were accompanied by a prominent decrease in the expression levels of testosterone synthesis-related enzymes (STAR, CYP11A1, CYP17A1, HSD3B1, and HSD17B3) in the mouse testis. In addition, BPS induced oxidative stress in the testis by upregulating the messenger RNA and protein levels of Keap1 and downregulating the levels of Nrf2, HO-1, and downstream antioxidant enzymes (CAT, SOD1, and Gpx4). In summary, our results indicate that exposure of adult male mice to BPS can inhibit Nrf2/HO-1 signaling and antioxidant enzyme activity, which induces oxidative stress and thereby may impair testosterone synthesis in testicular tissues, leading to reproductive damage.
Collapse
Affiliation(s)
- Yu-Xiao Wang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, People's Republic of China
| | - Wei Dai
- Yuecheng District Centers for Disease Control and Prevention, Shaoxing, Zhejiang, People's Republic of China
| | - Yi-Zhou Li
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, People's Republic of China
| | - Zi-Yao Wu
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, People's Republic of China
| | - Ya-Qi Kan
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, People's Republic of China
| | - Huai-Cai Zeng
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, People's Republic of China.,Department of Occupational and Environmental Health, Guilin Medical University, Guilin, People's Republic of China
| | - Qing-Zhi He
- School of Biotechnology, Guilin Medical University, Guilin, People's Republic of China
| |
Collapse
|
7
|
Li Z, Li D, Chen R, Gao S, Xu Z, Li N. Cell death regulation: A new way for natural products to treat osteoporosis. Pharmacol Res 2023; 187:106635. [PMID: 36581167 DOI: 10.1016/j.phrs.2022.106635] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/11/2022] [Accepted: 12/24/2022] [Indexed: 12/27/2022]
Abstract
Osteoporosis is a common metabolic bone disease that results from the imbalance of homeostasis within the bone. Intra-bone homeostasis is dependent on a precise dynamic balance between bone resorption by osteoclasts and bone formation by mesenchymal lineage osteoblasts, which comprises a series of complex and highly standardized steps. Programmed cell death (PCD) (e.g., apoptosis, autophagy, ferroptosis, pyroptosis, and necroptosis) is a cell death process that involves a cascade of gene expression events with tight structures. These events play a certain role in regulating bone metabolism by determining the fate of bone cells. Moreover, existing research has suggested that natural products derived from a wide variety of dietary components and medicinal plants modulate the PCDs based on different mechanisms, which show great potential for the prevention and treatment of osteoporosis, thus revealing the emergence of more acceptable complementary and alternative drugs with lower costs, fewer side effects and more long-term application. Accordingly, this review summarizes the common types of PCDs in the field of osteoporosis. Moreover, from the perspective of targeting PCDs, this review also discussed the roles of currently reported natural products in the treatment of osteoporosis and the involved mechanisms. Based on this, this review provides more insights into new molecular mechanisms of osteoporosis and provides a reference for developing more natural anti-osteoporosis drugs in the future.
Collapse
Affiliation(s)
- Zhichao Li
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Dandan Li
- College of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050011, China
| | - Renchang Chen
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Shang Gao
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Zhanwang Xu
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Nianhu Li
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China.
| |
Collapse
|
8
|
Han J, Yang K, An J, Jiang N, Fu S, Tang X. The Role of NRF2 in Bone Metabolism - Friend or Foe? Front Endocrinol (Lausanne) 2022; 13:813057. [PMID: 35282459 PMCID: PMC8906930 DOI: 10.3389/fendo.2022.813057] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/05/2022] [Indexed: 12/14/2022] Open
Abstract
Bone metabolism is closely related to oxidative stress. As one of the core regulatory factors of oxidative stress, NRF2 itself and its regulation of oxidative stress are both involved in bone metabolism. NRF2 plays an important and controversial role in the regulation of bone homeostasis in osteoblasts, osteoclasts and other bone cells. The role of NRF2 in bone is complex and affected by several factors, such as its expression levels, age, sex, the presence of various physiological and pathological conditions, as well as its interaction with certains transcription factors that maintain the normal physiological function of the bone tissue. The properties of NRF2 agonists have protective effects on the survival of osteogenic cells, including osteoblasts, osteocytes and stem cells. Activation of NRF2 directly inhibits osteoclast differentiation by resisting oxidative stress. The effects of NRF2 inhibition and hyperactivation on animal skeleton are still controversial, the majority of the studies suggest that the presence of NRF2 is indispensable for the acquisition and maintenance of bone mass, as well as the protection of bone mass under various stress conditions. More studies show that hyperactivation of NRF2 may cause damage to bone formation, while moderate activation of NRF2 promotes increased bone mass. In addition, the effects of NRF2 on the bone phenotype are characterized by sexual dimorphism. The efficacy of NRF2-activated drugs for bone protection and maintenance has been verified in a large number of in vivo and in vitro studies. Additional research on the role of NRF2 in bone metabolism will provide novel targets for the etiology and treatment of osteoporosis.
Collapse
Affiliation(s)
- Jie Han
- The First Clinical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Kuan Yang
- The First Clinical College of Lanzhou University, Lanzhou, China
| | - Jinyang An
- The First Clinical College of Lanzhou University, Lanzhou, China
| | - Na Jiang
- The First Clinical College of Lanzhou University, Lanzhou, China
| | - Songbo Fu
- The First Clinical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xulei Tang
- The First Clinical College of Lanzhou University, Lanzhou, China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, China
- *Correspondence: Xulei Tang,
| |
Collapse
|
9
|
Paeoniflorin Attenuates Dexamethasone-Induced Apoptosis of Osteoblast Cells and Promotes Bone Formation via Regulating AKT/mTOR/Autophagy Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6623464. [PMID: 33880124 PMCID: PMC8046541 DOI: 10.1155/2021/6623464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/21/2021] [Accepted: 03/26/2021] [Indexed: 01/04/2023]
Abstract
Paeoniflorin, a natural product derived from Paeonia lactiflora, possesses diverse pharmacological activities such as anti-inflammatory, antitumor, and antidiabetic effects. It has been reported for promoting osteoblastogenesis and inhibiting osteoclastogenesis. This study investigates the therapeutic effects of paeoniflorin in glucocorticoid-induced osteoporosis (GIOP) in vitro and in vivo. MC3T3-E1 cells were incubated with dexamethasone (DEX; 200 μM) and/or paeoniflorin (10 μM), followed by the investigation of cell proliferation, differentiation, mineralization, apoptosis, and autophagy. The AKT activator SC79 was used for evaluating the involvement of the AKT/mTOR signaling pathway. After DEX pretreatments, paeoniflorin promoted osteoblast differentiation and mineralization characterized by increase in Runx2, ALP, beclin-1, and LC3-II/LC3-I ratio levels and a decrease in apoptosis. The autophagy-promoting effects of paeoniflorin were reversed by SC79. C57BL/6 mice were given DEX (1 mg/kg) once daily and paeoniflorin (15 mg/kg) 48 hours for a total of 8 weeks followed by the investigation of histological changes, the trabecular bone microarchitecture, and the levels of bone turnover markers. The results showed that paeoniflorin increased alkaline phosphatase (ALP) activity and upregulated the expression of osteocalcin and beclin-1 but reduced the levels of Bax and C-terminal telopeptide of type I collagen (CTX-1). Thus, paeoniflorin may alleviate DEX-induced osteoporosis by promoting osteogenic differentiation and autophagy via inhibition of the AKT/mTOR signaling pathway.
Collapse
|
10
|
Luo T, Fu X, Liu Y, Ji Y, Shang Z. Sulforaphane Inhibits Osteoclastogenesis via Suppression of the Autophagic Pathway. Molecules 2021; 26:molecules26020347. [PMID: 33445451 PMCID: PMC7830922 DOI: 10.3390/molecules26020347] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/01/2021] [Accepted: 01/03/2021] [Indexed: 02/06/2023] Open
Abstract
Previous studies have demonstrated that sulforaphane (SFN) is a promising agent against osteoclastic bone destruction. However, the mechanism underlying its anti-osteoclastogenic activity is still unclear. Herein, for the first time, we explored the potential role of autophagy in SFN-mediated anti-osteoclastogenesis in vitro and in vivo. We established an osteoclastogenesis model using receptor activator of nuclear factor kappa-β ligand (RANKL)-induced RAW264.7 cells and bone marrow macrophages (BMMs). Tartrate-resistant acid phosphatase (TRAP) staining showed the formation of osteoclasts. We observed autophagosomes by transmission electron microscopy (TEM). In vitro, we found that SFN inhibited osteoclastogenesis (number of osteoclasts: 22.67 ± 0.88 in the SFN (0) group vs. 20.33 ± 1.45 in the SFN (1 μM) group vs. 13.00 ± 1.00 in the SFN (2.5 μM) group vs. 6.66 ± 1.20 in the SFN (2.5 μM) group), decreased the number of autophagosomes, and suppressed the accumulation of several autophagic proteins in osteoclast precursors. The activation of autophagy by rapamycin (RAP) almost reversed the SFN-elicited anti-osteoclastogenesis (number of osteoclasts: 22.67 ± 0.88 in the control group vs. 13.00 ± 1.00 in the SFN group vs. 17.33 ± 0.33 in the SFN+RAP group). Furthermore, Western blot (WB) analysis revealed that SFN inhibited the phosphorylation of c-Jun N-terminal kinase (JNK). The JNK activator anisomycin significantly promoted autophagy, whereas the inhibitor SP600125 markedly suppressed autophagic activation in pre-osteoclasts. Microcomputed tomography (CT), immunohistochemistry (IHC), and immunofluorescence (IF) were used to analyze the results in vivo. Consistent with the in vitro results, we found that the administration of SFN could decrease the number of osteoclasts and the expression of autophagic light chain 3 (LC3) and protect against lipopolysaccharide (LPS)-induced calvarial erosion. Our findings highlight autophagy as a crucial mechanism of SFN-mediated anti-osteoclastogenesis and show that the JNK signaling pathway participates in this process.
Collapse
Affiliation(s)
- Tingting Luo
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430000, China; (T.L.); (X.F.); (Y.L.)
| | - Xiazhou Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430000, China; (T.L.); (X.F.); (Y.L.)
| | - Yaoli Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430000, China; (T.L.); (X.F.); (Y.L.)
| | - Yaoting Ji
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430000, China; (T.L.); (X.F.); (Y.L.)
- Correspondence: (Y.J.); (Z.S.); Tel.: +86-138-8607-0344 (Y.J.); +86-27-8768-6129 (Z.S.)
| | - Zhengjun Shang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan 430000, China; (T.L.); (X.F.); (Y.L.)
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan 430000, China
- Correspondence: (Y.J.); (Z.S.); Tel.: +86-138-8607-0344 (Y.J.); +86-27-8768-6129 (Z.S.)
| |
Collapse
|
11
|
Keirns BH, Lucas EA, Smith BJ. Phytochemicals affect T helper 17 and T regulatory cells and gut integrity: implications on the gut-bone axis. Nutr Res 2020; 83:30-48. [PMID: 33010588 DOI: 10.1016/j.nutres.2020.08.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 08/05/2020] [Accepted: 08/11/2020] [Indexed: 12/16/2022]
Abstract
The pathology of osteoporosis is multifactorial, but a growing body of evidence supports an important role of the gut-bone axis, especially in bone loss associated with menopause, rheumatoid arthritis, and periodontal disease. Aberrant T cell responses favoring an increase in the ratio of T helper 17 cells to T regulatory cells play a critical role in the underlying etiology of this bone loss. Many of the dietary phytochemicals known to have osteoprotective activity such as flavonoids, organosulfur compounds, phenolic acids, as well as the oligosaccharides also improve gut barrier function and affect T cell differentiation and activation within gut-associated lymphoid tissues and at distal sites. Here, we examine the potential of these phytochemicals to act as prebiotics and immunomodulating agents, in part targeting the gut to mediate their effects on bone.
Collapse
Affiliation(s)
- Bryant H Keirns
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK 74078.
| | - Edralin A Lucas
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK 74078.
| | - Brenda J Smith
- Department of Nutritional Sciences, Oklahoma State University, Stillwater, OK 74078.
| |
Collapse
|
12
|
Nrf-2 activator sulforaphane protects retinal cells from oxidative stress-induced retinal injury. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
13
|
Li X, Chen Y, Mao Y, Dai P, Sun X, Zhang X, Cheng H, Wang Y, Banda I, Wu G, Ma J, Huang S, Forouzanfar T. Curcumin Protects Osteoblasts From Oxidative Stress-Induced Dysfunction via GSK3β-Nrf2 Signaling Pathway. Front Bioeng Biotechnol 2020; 8:625. [PMID: 32612986 PMCID: PMC7308455 DOI: 10.3389/fbioe.2020.00625] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 05/21/2020] [Indexed: 12/14/2022] Open
Abstract
Osteoblasts dysfunction, induced by oxidative stress (OS), is one of major pathological mechanisms for osteoporosis. Curcumin (Cur), a bioactive antioxidant compound, isolated from Curcumin longa L, was regarded as a strong reactive oxygen species (ROS) scavenger. However, it remains unveiled whether Cur can prevent osteoblasts from OS-induced dysfunction. To approach this question, we adopted a well-established OS model to investigate the preventive effect of Cur on osteoblasts dysfunction by measuring intracellular ROS production, cell viability, apoptosis rate and osteoblastogenesis markers. We showed that the pretreatment of Cur could significantly antagonize OS so as to suppress endogenous ROS production, maintain osteoblasts viability and promote osteoblastogenesis. Inhibiting Glycogen synthase kinase (GSK3β) and activating nuclear factor erythroid 2 related factor 2 (Nrf2) could significantly antagonize the destructive effects of OS, which indicated the critical role of GSK3β-Nrf2 signaling. Furthermore, Cur also abolished the suppressive effects of OS on GSK3β-Nrf2 signaling pathway. Our findings demonstrated that Cur could protect osteoblasts against OS-induced dysfunction via GSK3β-Nrf2 signaling and provide a promising way for osteoporosis treatment.
Collapse
Affiliation(s)
- Xumin Li
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam, MOVE Research Institute, University of Amsterdam and Vrije University Amsterdam, Amsterdam, Netherlands.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Department of Oral and Maxillofacial Surgary/Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam, Amsterdam Movement Science, Vrije Universitetit Amsterdam, Amsterdam, Netherlands
| | - Yang Chen
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Yixin Mao
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Laboratory for Myology, Amsterdam Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Panpan Dai
- Department of Stomatology, Taizhou Hospital, Wenzhou Medical University, Linhai, China
| | - Xiaoyu Sun
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam, MOVE Research Institute, University of Amsterdam and Vrije University Amsterdam, Amsterdam, Netherlands.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Department of Periodontology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Xiaorong Zhang
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Department of Endodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Haoran Cheng
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Yingting Wang
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Isaac Banda
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam, MOVE Research Institute, University of Amsterdam and Vrije University Amsterdam, Amsterdam, Netherlands
| | - Jianfeng Ma
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Shengbin Huang
- Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.,Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam, MOVE Research Institute, University of Amsterdam and Vrije University Amsterdam, Amsterdam, Netherlands.,Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Tim Forouzanfar
- Department of Oral and Maxillofacial Surgary/Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam, Amsterdam Movement Science, Vrije Universitetit Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
14
|
New Insights into the Nrf-2/HO-1 Signaling Axis and Its Application in Pediatric Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:3214196. [PMID: 31827672 PMCID: PMC6885770 DOI: 10.1155/2019/3214196] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/19/2019] [Accepted: 11/02/2019] [Indexed: 12/13/2022]
Abstract
Respiratory diseases are one of the most common pediatric diseases in clinical practice. Their pathogenesis, diagnosis, and treatment are thus worthy of further investigation. The nuclear factor erythroid 2-related factor 2/heme oxygenase 1 (Nrf2/HO-1) signaling axis is a multiple organ protection chain that protects against oxidative stress injury. This signaling axis regulates anti-inflammation and antioxidation by regulating calcium ions, mitochondrial oxidative stress, autophagy, ferroptosis, pyroptosis, apoptosis, alkaliptosis, and clockophagy. This review presents an overview of the role of the Nrf2/HO-1 signaling axis in the pathogenesis of pediatric respiratory diseases and the latest research progress on this subject. Overall, the Nrf2/HO-1 signaling axis has an important clinical value in pediatric respiratory diseases, and its protective effect needs further exploration.
Collapse
|
15
|
Li G, Jiang X, Liu L, Liu X, Liu H, Zhang Z. Effect of estradiol on high glucose‑induced osteoblast injury. Mol Med Rep 2019; 20:3019-3026. [PMID: 31432111 PMCID: PMC6755179 DOI: 10.3892/mmr.2019.10552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 04/12/2019] [Indexed: 01/06/2023] Open
Abstract
Estradiol (E2) serves an important role in the changes of postmenopausal bone turnover rate and the development of osteoporosis. The present study aimed to investigate the effects of E2 on high glucose (HG)‑induced osteoblast injury. Cell Counting Kit‑8 was used to determine cell viability. Reverse transcription‑quantitative PCR (RT‑qPCR) and western blotting was used to analyze the mRNA and protein expression levels of osteocalcin, Runt‑related transcription factor 2 (Runx2), nuclear factor E2‑related factor 2 (Nrf2) and heme oxygenase‑1 (HO1). Flow cytometry was performed to analyze apoptosis. The results revealed that cell viability was lower in cells treated with HG (100, 200 or 300 mg/dl) compared with the control group. Cell viability was decreased in cells treated with 200 mg/dl HG on days 3, 5 and 7. In addition, cell viability was increased by 0.1 µM E2. E2 with HG co‑treatment increased cell viability, osteocalcin and Runx2 mRNA expression levels and nuclear Nrf2 and HO1 protein expression levels compared with the HG‑only group. All these changes, with the exception of Runx2, were reversed by silencing Nrf2 expression using small interfering (si)RNA (siNrf2). Additionally, apoptosis was reduced by E2 in HG‑treated cells, which was reversed by siNrf2 transfection. These results demonstrated that E2 may prevent HG‑induced osteoblast injury by activating Nrf2/HO1 signaling pathways.
Collapse
Affiliation(s)
- Guangrun Li
- Department of Spinal Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Xiaofeng Jiang
- Department of Joint Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Liping Liu
- Department of Allergy, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Xiaoyang Liu
- Department of Spinal Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Hongtao Liu
- Department of Spinal Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Zuofu Zhang
- Department of Joint Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| |
Collapse
|
16
|
Wu DM, Zheng ZH, Fan SH, Zhang ZF, Chen GQ, Lu J. Sulforaphane administration alleviates diffuse axonal injury (DAI) via regulation signaling pathway of NRF2 and HO-1. J Cell Biochem 2019; 121:430-442. [PMID: 31232487 DOI: 10.1002/jcb.29203] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 02/04/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Nuclear factor erythroid 2-related factor 2 (Nrf2) can alleviate diffuse axonal injury (DAI)-induced apoptosis by regulating expression of heme oxygenase-1 (HO-1), while sulforaphane (SFN) was shown to reduce oxidative stress by increasing the expression of Nrf2. Therefore, we aimed to investigate therapeutic effect of SFN in the treatment of DAI and the ability of SFN to reduce oxidative stress. METHODS The 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay was used to observe the effects of H2 O 2 and SFN on cell viability. Fluorometric assay, Western blot analysis, and flow cytometry were conducted to validate the protective role of SFN in an animal model of DAI. In addition, the levels of malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GPx) were measured in DAI rats treated by SFN, while Western blot, immunohistochemistry assay, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay were carried out to verify the effect of SFN in different animal groups. RESULTS Cell viability was reduced by H2 O 2 in a dose-dependent manner, while the treatment by SFN significantly promoted cell growth. Meanwhile the administration of SFN effectively reduced the levels of caspase-3/poly(ADP-ribose) polymerase (PARP) activity increased by the H 2 O 2 treatment, indicating that the protective effect of SFN could be mediated by its ability to suppress caspase-3 activation and PARP cleavage. In addition, the SFN treatment reduced the intracellular reactive oxygen species (ROS) generation induced by H 2 O 2 . Moreover, the MDA levels of SOD/GPx activity in various rat groups showed the protective effects of SFN in DAI rats. It is suspected that the protective effect of SFN was exerted via the activation of the Nrf2/HO-1 signaling pathway. In this study, DAI and DAI + phosphate-buffered saline (PBS) groups also showed the presence of more TUNEL-positive cells compared with the sham-operated group, while the SFN treatment reduced the extent of neuronal apoptosis. CONCLUSIONS By activating the Nrf2/HO-1 signaling pathway and reducing the activity of caspase-3, SFN reduces the apoptosis of neurons in brain trauma-induced DAI.
Collapse
Affiliation(s)
- Dong-Mei Wu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Zi-Hui Zheng
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shao-Hua Fan
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Zi-Feng Zhang
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| | - Gui-Quan Chen
- State Key Laboratory of Pharmaceutical Biotechnology, MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, Nanjing, China
| | - Jun Lu
- Key Laboratory for Biotechnology on Medicinal Plants of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, China.,College of Health Sciences, Jiangsu Normal University, Xuzhou, China
| |
Collapse
|
17
|
Zhang G, Yang W, Jiang F, Zou P, Zeng Y, Ling X, Zhou Z, Cao J, Ao L. PERK regulates Nrf2/ARE antioxidant pathway against dibutyl phthalate-induced mitochondrial damage and apoptosis dependent of reactive oxygen species in mouse spermatocyte-derived cells. Toxicol Lett 2019; 308:24-33. [DOI: 10.1016/j.toxlet.2019.03.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 02/17/2019] [Accepted: 03/17/2019] [Indexed: 01/30/2023]
|
18
|
Han D, Gu X, Gao J, Wang Z, Liu G, Barkema HW, Han B. Chlorogenic acid promotes the Nrf2/HO-1 anti-oxidative pathway by activating p21 Waf1/Cip1 to resist dexamethasone-induced apoptosis in osteoblastic cells. Free Radic Biol Med 2019; 137:1-12. [PMID: 31004750 DOI: 10.1016/j.freeradbiomed.2019.04.014] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/19/2019] [Accepted: 04/13/2019] [Indexed: 01/08/2023]
Abstract
In a previous study, p21Waf1/Cip1 (p21) promoted activation of the nuclear factor E2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway, which has an important role in regulating apoptosis triggered by oxidative stress and inhibiting development of osteoporosis. Chlorogenic acid (CGA) has a strong protective effect on osteoporosis, closely related to activating the Nrf2/HO-1 pathway. However, whether CGA can resist apoptosis by regulating p21 and consequently promote activation of the Nrf2/HO-1 pathway needs further investigation. MC3T3-E1 cells were treated with dexamethasone (Dex), with or without CGA pre-treatment. Cell proliferation and cytotoxicity were measured using MTT assay and LDH release assay, respectively, and apoptosis assessed by flow cytometry. CGA significantly attenuated mitochondrial apoptosis and reversed down-regulation of p21 in osteoblastic MC3T3-E1 cells exposed to Dex. Additionally, CGA decreased Keap1 expression and promoted activation of the Nrf2/HO-1 pathway, quenching intracellular reactive oxygen species (ROS), hydrogen peroxide (H2O2) and mitochondrial superoxide overproduction boosted by Dex. Importantly, depletion of p21 by siRNA blocked activation of the Nrf2/HO-1 pathway, enhanced oxidative stress and increased apoptosis induced by CGA in MC3T3-E1 cells challenged with Dex. Therefore, CGA promoted the Nrf2/HO-1 anti-oxidative pathway by activating p21 to prevent Dex-induced mitochondrial apoptosis in osteoblastic cells. This pathway has potential as a therapeutic target for prevention and treatment of osteoporosis.
Collapse
Affiliation(s)
- Dandan Han
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China
| | - Xiaolong Gu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, PR China
| | - Jian Gao
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China
| | - Zhi Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Huhehot 010018, PR China
| | - Gang Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China
| | - Herman W Barkema
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada, T2N 4N1
| | - Bo Han
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China.
| |
Collapse
|
19
|
Wu K, Gong Z, Zou L, Ye H, Wang C, Liu Y, Liang Y, Li Y, Ren J, Cui L, Liu Y. Sargassum integerrimum inhibits oestrogen deficiency and hyperlipidaemia-induced bone loss by upregulating nuclear factor (erythroid-derived 2)-like 2 in female rats. J Orthop Translat 2019; 19:106-117. [PMID: 31844618 PMCID: PMC6896726 DOI: 10.1016/j.jot.2019.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/17/2019] [Accepted: 03/04/2019] [Indexed: 02/03/2023] Open
Abstract
Ethnopharmacological relevance Oestrogen deficiency, high incidences of hyperlipidaemia (HLP) and accelerated bone loss frequently occur in postmenopausal women. There is an urgent need to develop functional foods or specific drugs to protect against bone loss induced by oestrogen deficiency with HLP. Aim of the study In this study, we investigated the potential inhibitory effects of Sargassum integerrimum (SI) on bone loss in an ovariectomized rat model with HLP. Materials and methods The rats were treated for 12 weeks, and then, bone mineral density, bone biomechanical, bone microstructure, bone morphology, biomarkers of HLP oxidative stress and side effects were determined. Immunohistochemical staining and Western blot were performed to evaluate related protein expression. Results The femur bone mineral density increased (P < 0.05), and the microscopic structures (ratio of bone volume to total volume [BV/TV], connectivity density [Conn.D], trabecular number [Tb.N] and trabecular thickness [Tb.Th]) of the bone trabecula and mechanical properties (maximum and breaking load [ML and BL, respectively]) improved after SI treatment (P < 0.05). Furthermore, the levels of HLP biomarkers (total cholesterol, triglyceride and low-density lipoprotein) were significantly decreased (P < 0.05), whereas the levels of antioxidant markers (superoxide dismutase and total antioxidant capacity) were increased (P < 0.05). Similar results were obtained with immunohistochemical staining, whereas the Western blot assay showed that SI stimulated the expression of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) in bone. Conclusion Our data indicate that rats exposed to SI treatment for 12 weeks did not exhibit noticeable side effects. In conclusion, SI suppressed bone loss induced by ovariectomized and the associated HLP in rats by activating Nrf2, which could be a promising treatment option for osteoporosis induced by oestrogen deficiency and HLP in postmenopausal women. Translational scope statement Our study verified that SI prevented bone loss in rats with oestrogen deficiency with HLP by upregulating nuclear factor (erythroid-derived 2)-like 2. Furthermore, no side effect was observed after the long-term administration of SI. Those results suggested SI could be developed as a functional food or drug for postmenopausal osteoporosis induced by oestrogen deficiency with HLP.
Collapse
Affiliation(s)
- Kefeng Wu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Zhongqin Gong
- Shenzhen Ritzcon Biological Technology Co., Ltd., Shenzhen, 518000, China
| | - Liyi Zou
- Department of Pharmacology, Guangdong Medical University, Dongguan, 523808, Guangdong, China
| | - Hua Ye
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Changxiu Wang
- School of Public Health, Guangdong Medical University, Dongguan, Guangdong, 523808, China
| | - Yangchun Liu
- Jiangxi Medical College, Queen Mary College of Nanchang University, Nanchang, Jiangxi, 330000, China
| | - Yan Liang
- Department of Pharmacology, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Yanping Li
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Jianwei Ren
- School of Biomedical Sciences, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Liao Cui
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China.,Department of Pharmacology, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Yi Liu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| |
Collapse
|
20
|
Vanduchova A, Anzenbacher P, Anzenbacherova E. Isothiocyanate from Broccoli, Sulforaphane, and Its Properties. J Med Food 2019; 22:121-126. [DOI: 10.1089/jmf.2018.0024] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Alena Vanduchova
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Pavel Anzenbacher
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Eva Anzenbacherova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| |
Collapse
|
21
|
Klotho prevents DEX-induced apoptosis in MC3T3-E1 osteoblasts through the NF-κB signaling pathway. Biochem Biophys Res Commun 2018; 507:355-361. [PMID: 30442365 DOI: 10.1016/j.bbrc.2018.11.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/06/2018] [Indexed: 12/25/2022]
Abstract
Dexamethasone (DEX) is a commonly used anti-inflammatory drug and an immunosuppressive drug used in clinical practice to treat a variety of diseases. Glucocorticoid-induced osteoporosis (GIOP) is a consequence of high dose, or a long-term low dose use of glucocorticoids (GCs). These treatment regimens can cause a variety of bone-related adverse effects, leading to increased osteoblast and bone cell apoptosis. Evidence suggests that klotho (KL) can inhibit GIOP. It is unknown whether KL attenuates DEX-induced apoptosis in MC3T3-E1 cells or the underlying mechanisms involved. In the present study, we found that MC3T3-E1 cells pretreated with DEX led to the up-regulation of cleaved-caspase-3, and down-regulation of caspase-3, which were inhibited by KL transfection. Furthermore, flow cytometry and western blot analysis revealed that the NFκB inhibitor pyrrolidine dithiocarbamate (PDTC) could restore the DEX-induced caspase-3 decrease and inhibit the DEX-induced cleaved caspase-3 increase. We observed that DEX stimulated the degradation of IκBα(NFκB inhibitor α) and the translocation of NFκB, which were suppressed by KL transfection. These findings therefore, indicate a protective role for KL against osteoblastic cell apoptosis induced by DEX, via the NF-κB signaling pathway.
Collapse
|
22
|
Liu W, Zhao Z, Na Y, Meng C, Wang J, Bai R. Dexamethasone-induced production of reactive oxygen species promotes apoptosis via endoplasmic reticulum stress and autophagy in MC3T3-E1 cells. Int J Mol Med 2018; 41:2028-2036. [PMID: 29393368 PMCID: PMC5810234 DOI: 10.3892/ijmm.2018.3412] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 01/05/2018] [Indexed: 02/06/2023] Open
Abstract
Apoptosis of osteoblasts, triggered by prolonged or excessive use of glucocorticoids (GCs), has been identified as a dominant contributor to the development of osteoporosis and osteonecrosis. However, the molecular mechanisms underlying GC‑induced apoptosis are multifaceted and remain to be fully elucidated. The present study aimed to explore the correlation between dexamethasone (DEX)‑induced reactive oxygen species (ROS), autophagy and apoptosis in MC3T3‑E1 osteoblast‑like cells. Cell viability was assessed using a Cell Counting Kit‑8 assay, and flow cytometry was performed to assess cellular apoptosis, cell cycle and ROS production. Immunofluorescence and western blot analysis were respectively used to detect autophagic vacuoles and the expression of proteins, including cyclin D kinase (CDK)2, poly[ADP ribose] polymerase, caspase‑3, activating transcription factor (ATF)4, CCAAT/enhancer‑binding protein homologous protein (CHOP), Beclin1, microtubule‑associated proteins 1A/1B light chain (LC)3B and P62. It was revealed that DEX not only reduced cell viability, but also promoted apoptosis via the activation of endoplasmic reticulum (ER) stress. In addition, DEX induced cell cycle arrest at G0/G1 phase via inhibition of the expression of CDK2, and the production of ROS was activated. Of note, the DEX‑mediated changes in viability and apoptosis were attenuated in MC3T3‑E1 cells after treatment with 3‑methyladenine, which is an autophagy inhibitor. Treatment with the antioxidant N‑acetylcysteine abolished the effect of DEX on the proliferation, apoptosis, ER stress and autophagy of MC3T3‑E1 cells. In conclusion, the present results indicated that DEX promoted the production of ROS, which enhanced apoptosis through activation of autophagy and ER stress in MC3T3-E1 cells.
Collapse
Affiliation(s)
| | | | - Yuyan Na
- Departments of Pediatric Orthopedics
| | | | - Jianzhong Wang
- Orthopedics and Trauma, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010030, P.R. China
| | - Rui Bai
- Departments of Pediatric Orthopedics
| |
Collapse
|
23
|
Liu S, Fang T, Yang L, Chen Z, Mu S, Fu Q. Gastrodin protects MC3T3-E1 osteoblasts from dexamethasone-induced cellular dysfunction and promotes bone formation via induction of the NRF2 signaling pathway. Int J Mol Med 2018; 41:2059-2069. [PMID: 29393365 PMCID: PMC5810206 DOI: 10.3892/ijmm.2018.3414] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 01/09/2018] [Indexed: 12/31/2022] Open
Abstract
Glucocorticoid (GC)-induced osteoporosis (GIO) is one of the most common secondary and iatrogenic forms of osteoporosis. GCs are widely used in clinical therapy and play a key role in the normal regulation of bone remodeling. However, the prolonged and high-dose administration of GCs results in the occurrence of osteoporosis, which is partially due to the dysfunction and apoptosis of osteoblasts and osteocytes. The aim of the present study was to investigate the effects of gastrodin, a natural bioactive compound isolated from the traditional Chinese herbal agent Gastrodia elata, on GC-treated MC3T3‑E1 murine osteoblastic cells. MC3T3‑E1 cells were exposed to dexamethasone (DEX), with or without gastrodin pretreatment, and cell viability was measured by the cell counting kit-8 (CCK-8) assay. Quantitative polymerase chain reaction analysis was performed to evaluate osteogenic gene expression, and cellular alkaline phosphatase (ALP) activity was measured as well. Alizarin Red staining of calcium deposits was found to reflect the degree of osteoblast maturity. Western blotting was performed to determine the expression of osteogenic and adipogenic differentiation key proteins, as well as nuclear factor-like 2 (NRF2) pathway‑related proteins. Annexin V-fluorescein isothiocyanate̸propidium iodide flow cytometric analysis was performed to determine osteoblast apoptosis. JC-1 staining was used to detect the changes of the mitochondrial membrane potential in cells. The results revealed that gastrodin prevented the decrease in cell viability caused by DEX-induced MC3T3‑E1 cell dysfunction, and that groups pretreated with gastrodin exhibited higher mRNA levels of osteogenic genes, such as Runx2, osterix, bone morphogenetic protein-2 and osteocalcin. Furthermore, treatment with both DEX and gastrodin was associated with increased ALP activity in MC3T3-E1 cells, as well as more calcium deposits, compared with cells treated with DEX alone. In addition, gastrodin increased osteogenic key marker protein Runx2 while activating NRF2 and downstream effector protein expression. Therefore, gastrodin may have the potential to reduce DEX-induced cell apoptosis and increase the mitochondrial membrane potential against DEX. These results demonstrated that gastrodin was able to prevent and/or delay DEX‑induced osteoporosis by improving osteoblast function, and these protective effects were verified in an animal model.
Collapse
Affiliation(s)
- Shengye Liu
- Department of Spine and Joint Surgery, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Tao Fang
- Department of Spine and Joint Surgery, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Liyu Yang
- Department of Spine and Joint Surgery, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Zhiguang Chen
- Emergency Department, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Shuai Mu
- Department of Spine and Joint Surgery, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Qin Fu
- Department of Spine and Joint Surgery, The Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| |
Collapse
|
24
|
The interplay between inflammation, oxidative stress, DNA damage, DNA repair and mitochondrial dysfunction in depression. Prog Neuropsychopharmacol Biol Psychiatry 2018; 80:309-321. [PMID: 28669580 DOI: 10.1016/j.pnpbp.2017.06.036] [Citation(s) in RCA: 188] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 06/05/2017] [Accepted: 06/29/2017] [Indexed: 12/13/2022]
Abstract
A growing body of evidence suggests that inflammation, mitochondrial dysfunction and oxidant-antioxidant imbalance may play a significant role in the development and progression of depression. Elevated levels of reactive oxygen and nitrogen species - a result of oxidant-antioxidant imbalance - may lead to increased damage of biomolecules, including DNA. This was confirmed in depressed patients in a research study conducted by our team and other scientists. 8-oxoguanine - a marker of oxidative DNA damage - was found in the patients' lymphocytes, urine and serum. These results were confirmed using a comet assay on lymphocytes. Furthermore, it was shown that the patients' cells repaired peroxide-induced DNA damage less efficiently than controls' cells and that some single nucleotide polymorphisms (SNP) of the genes involved in oxidative DNA damage repair may modulate the risk of depression. Lastly, less efficient DNA damage repair observed in the patients can be, at least partly, attributed to the presence of specific SNP variants, as it was revealed through a genotype-phenotype analysis. In conclusion, the available literature shows that both oxidative stress and less efficient DNA damage repair may lead to increased DNA damage in depressed patients. A similar mechanism may result in mitochondrial dysfunction, which is observed in depression.
Collapse
|
25
|
Phillipson OT. Alpha-synuclein, epigenetics, mitochondria, metabolism, calcium traffic, & circadian dysfunction in Parkinson's disease. An integrated strategy for management. Ageing Res Rev 2017; 40:149-167. [PMID: 28986235 DOI: 10.1016/j.arr.2017.09.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 09/14/2017] [Indexed: 12/15/2022]
Abstract
The motor deficits which characterise the sporadic form of Parkinson's disease arise from age-related loss of a subset of dopamine neurons in the substantia nigra. Although motor symptoms respond to dopamine replacement therapies, the underlying disease process remains. This review details some features of the progressive molecular pathology and proposes deployment of a combination of nutrients: R-lipoic acid, acetyl-l-carnitine, ubiquinol, melatonin (or receptor agonists) and vitamin D3, with the collective potential to slow progression of these features. The main nutrient targets include impaired mitochondria and the associated oxidative/nitrosative stress, calcium stress and impaired gene transcription induced by pathogenic forms of alpha- synuclein. Benefits may be achieved via nutrient influence on epigenetic signaling pathways governing transcription factors for mitochondrial biogenesis, antioxidant defences and the autophagy-lysosomal pathway, via regulation of the metabolic energy sensor AMP activated protein kinase (AMPK) and the mammalian target of rapamycin mTOR. Nutrients also benefit expression of the transcription factor for neuronal survival (NR4A2), trophic factors GDNF and BDNF, and age-related calcium signals. In addition a number of non-motor related dysfunctions in circadian control, clock genes and associated metabolic, endocrine and sleep-wake activity are briefly addressed, as are late-stage complications in respect of cognitive decline and osteoporosis. Analysis of the network of nutrient effects reveals how beneficial synergies may counter the accumulation and promote clearance of pathogenic alpha-synuclein.
Collapse
|
26
|
Omar NN, Tash RF. Fluoxetine coupled with zinc in a chronic mild stress model of depression: Providing a reservoir for optimum zinc signaling and neuronal remodeling. Pharmacol Biochem Behav 2017; 160:30-38. [DOI: 10.1016/j.pbb.2017.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 07/30/2017] [Accepted: 08/07/2017] [Indexed: 12/20/2022]
|
27
|
Marchev AS, Dimitrova PA, Burns AJ, Kostov RV, Dinkova-Kostova AT, Georgiev MI. Oxidative stress and chronic inflammation in osteoarthritis: can NRF2 counteract these partners in crime? Ann N Y Acad Sci 2017; 1401:114-135. [PMID: 28662306 DOI: 10.1111/nyas.13407] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/08/2017] [Accepted: 05/12/2017] [Indexed: 01/15/2023]
Abstract
Osteoarthritis (OA) is an age-related joint degenerative disease associated with pain, joint deformity, and disability. The disease starts with cartilage damage but then progressively involves subchondral bone, causing an imbalance between osteoclast-driven bone resorption and osteoblast-driven remodeling. Here, we summarize the data for the role of oxidative stress and inflammation in OA pathology and discuss how these two processes are integrated during OA progression, as well as their contribution to abnormalities in cartilage/bone metabolism and integrity. At the cellular level, oxidative stress and inflammation are counteracted by transcription factor nuclear factor erythroid p45-related factor 2 (NRF2), and we describe the regulation of NRF2, highlighting its role in OA pathology. We also discuss the beneficial effect of some phytonutrients, including the therapeutic potential of NRF2 activation, in OA.
Collapse
Affiliation(s)
- Andrey S Marchev
- Group of Plant Cell Biotechnology and Metabolomics, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Plovdiv, Bulgaria
| | - Petya A Dimitrova
- Department of Immunology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Andrew J Burns
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, UK
| | - Rumen V Kostov
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, UK
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, UK
- Departments of Medicine and Pharmacology and Molecular Sciences, Johns Hopkins University, School of Medicine, Baltimore, Maryland
| | - Milen I Georgiev
- Group of Plant Cell Biotechnology and Metabolomics, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Plovdiv, Bulgaria
| |
Collapse
|
28
|
Jeddi F, Soozangar N, Sadeghi MR, Somi MH, Samadi N. Contradictory roles of Nrf2/Keap1 signaling pathway in cancer prevention/promotion and chemoresistance. DNA Repair (Amst) 2017; 54:13-21. [DOI: 10.1016/j.dnarep.2017.03.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 03/25/2017] [Accepted: 03/26/2017] [Indexed: 12/17/2022]
|
29
|
Vanduchova A, Tomankova V, Anzenbacher P, Anzenbacherova E. Influence of Sulforaphane Metabolites on Activities of Human Drug-Metabolizing Cytochrome P450 and Determination of Sulforaphane in Human Liver Cells. J Med Food 2016; 19:1141-1146. [PMID: 27779894 DOI: 10.1089/jmf.2016.0063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The influence of metabolites of sulforaphane, natural compounds present in broccoli (Brassica oleracea var. botrytis italica) and in other cruciferous vegetables, on drug-metabolizing cytochrome P450 (CYP) enzymes in human liver microsomes and possible entry of sulforaphane into human hepatic cells were investigated. Metabolites studied are compounds derived from sulforaphane by the mercapturic acid pathway (conjugation with glutathione and by following reactions), namely sulforaphane glutathione and sulforaphane cysteine conjugates and sulforaphane-N-acetylcysteine. Their possible effect on four drug-metabolizing CYP enzymes, CYP3A4 (midazolam 1'-hydroxylation), CYP2D6 (bufuralol 1'-hydroxylation), CYP1A2 (7-ethoxyresorufin O-deethylation), and CYP2B6 (7-ethoxy-4-(trifluoromethyl)coumarin O-deethylation), was tested. Inhibition of four prototypical CYP activities by sulforaphane metabolites was studied in pooled human liver microsomes. Sulforaphane metabolites did not considerably affect biological function of drug-metabolizing CYPs in human liver microsomes except for CYP2D6, which was found to be inhibited down to 73-78% of the original activity. Analysis of the entry of sulforaphane into human hepatocytes was done by cell disruption by sonication, methylene chloride extraction, and modified high-performance liquid chromatography method. The results have shown penetration of sulforaphane into the human hepatic cells.
Collapse
Affiliation(s)
- Alena Vanduchova
- 1 Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc , Czech Republic
| | - Veronika Tomankova
- 2 Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc , Czech Republic
| | - Pavel Anzenbacher
- 1 Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc , Czech Republic
| | - Eva Anzenbacherova
- 2 Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc , Czech Republic
| |
Collapse
|
30
|
Roy B, Curtis ME, Fears LS, Nahashon SN, Fentress HM. Molecular Mechanisms of Obesity-Induced Osteoporosis and Muscle Atrophy. Front Physiol 2016; 7:439. [PMID: 27746742 PMCID: PMC5040721 DOI: 10.3389/fphys.2016.00439] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Accepted: 09/15/2016] [Indexed: 12/19/2022] Open
Abstract
Obesity and osteoporosis are two alarming health disorders prominent among middle and old age populations, and the numbers of those affected by these two disorders are increasing. It is estimated that more than 600 million adults are obese and over 200 million people have osteoporosis worldwide. Interestingly, both of these abnormalities share some common features including a genetic predisposition, and a common origin: bone marrow mesenchymal stromal cells. Obesity is characterized by the expression of leptin, adiponectin, interleukin 6 (IL-6), interleukin 10 (IL-10), monocyte chemotactic protein-1 (MCP-1), tumor necrosis factor-alpha (TNF-α), macrophage colony stimulating factor (M-CSF), growth hormone (GH), parathyroid hormone (PTH), angiotensin II (Ang II), 5-hydroxy-tryptamine (5-HT), Advance glycation end products (AGE), and myostatin, which exert their effects by modulating the signaling pathways within bone and muscle. Chemical messengers (e.g., TNF-α, IL-6, AGE, leptins) that are upregulated or downregulated as a result of obesity have been shown to act as negative regulators of osteoblasts, osteocytes and muscles, as well as positive regulators of osteoclasts. These additive effects of obesity ultimately increase the risk for osteoporosis and muscle atrophy. The aim of this review is to identify the potential cellular mechanisms through which obesity may facilitate osteoporosis, muscle atrophy and bone fractures.
Collapse
Affiliation(s)
- Bipradas Roy
- Department of Biological Sciences, Tennessee State University Nashville, TN, USA
| | - Mary E Curtis
- Department of Biological Sciences, Tennessee State University Nashville, TN, USA
| | - Letimicia S Fears
- Department of Biological Sciences, Tennessee State University Nashville, TN, USA
| | - Samuel N Nahashon
- Department of Agricultural and Environmental Sciences, Tennessee State University Nashville, TN, USA
| | - Hugh M Fentress
- Department of Biological Sciences, Tennessee State University Nashville, TN, USA
| |
Collapse
|
31
|
Zhang Y, Shao J, Wang Z, Yang T, Liu S, Liu Y, Fan X, Ye W. Aqueous extract of pomegranate seed attenuates glucocorticoid-induced bone loss and hypercalciuria in mice: A comparative study with alendronate. Int J Mol Med 2016; 38:491-8. [PMID: 27278225 DOI: 10.3892/ijmm.2016.2622] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 04/22/2016] [Indexed: 01/02/2023] Open
Abstract
The present study was performed in order to examine bone loss and calcium homeostasis in mice with glucocorticoid (GC)-induced osteoporosis (GIOP) following treatment with the aqueous extract of pomegranate seed (AE-PS). In addition, a comparative study with alendronate was performed. Biomarkers in the serum and the urine were measured. The tibias, kidney and duodenum were removed in order to measure the levels of bone calcium, protein expression as well as to perform histomorphological analysis of the bone. GC treatment facilitated the induction of hypercalciuria in the mice, and the AE-PS‑treated mice exhibited a greater increase in serum calcium and a decrease in urine calcium. The AE-PS reversed the deleterious effects on the trabecular bone induced by DXM and stimulated bone remodeling, including an increase in bone calcium and alkaline phosphatase‑b (ALP-b) and a decrease in a the critical bone resorption markers C-terminal telopeptide of type I collagen (CTX) and tartrate‑resistant acid phosphatase-5b (TRAP-5b). Hematoxylin and eosin (H&E) staining revealed the increased disconnections and separation between the growth plate and the trabecular bone network as well as the reduction in the trabecular bone mass of the primary and secondary spongiosa throughout the proximal metaphysis of the tibia in the DXM group. Moreover, the decreased protein expression of transient receptor potential vanilloid (TRPV)5, TRPV6 and calbindin‑D9k (CaBP‑9k) was reversed by the AE-PS or alendronate supplementation in the kidneys and the duodenum as well as plasma membrane Ca2+‑ATPase1 (PMCA1) expression in the kidneys of mice with GIOP. There was no marked difference in pharmacological effectiveness between alendronate and the AE-PS. Taken together, these findings suggest that the AE-PS may be an alternative therapy suitable for use in the management of secondary osteoporosis.
Collapse
Affiliation(s)
- Yan Zhang
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Jin Shao
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Zhi Wang
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Tieyi Yang
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Shuyi Liu
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Yue Liu
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Xinbing Fan
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| | - Weiguang Ye
- Department of Orthopaedics, Gongli Hospital of Pudong New Area, Shanghai 200135, P.R. China
| |
Collapse
|
32
|
Li J, He C, Tong W, Zou Y, Li D, Zhang C, Xu W. Tanshinone IIA blocks dexamethasone-induced apoptosis in osteoblasts through inhibiting Nox4-derived ROS production. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:13695-13706. [PMID: 26722597 PMCID: PMC4680542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/20/2015] [Indexed: 06/05/2023]
Abstract
Apoptosis of osteoblasts caused by glucocorticoids has been identified as an important contributor to the development of osteoporosis. Tanshinone IIA (Tan), an active ingredient extracted from the rhizome of the Salvia miltiorrhiza Bunge (Danshen), has been reported to cast positive effects on osteoporosis. However, the precise mechanisms accounting this action remain elusive. In this study, by using osteoblastic MC3T3-E1 cells as a model, we confirmed the protective effects of Tan against dexamethasone (Dex)-induced cell apoptosis and further clarified its molecular mechanism of action. Our results showed that treatment with Dex caused cell injury, increased cytosol cytochrome c level and Nox expression, induced apoptosis in caspase-9-dependent manner, and enhanced reactive oxygen species (ROS) production. Tan attenuated these deleterious consequence triggered by Dex. Moreover, Dex-induced ROS production and cell injury were inhibited by antioxidant, NADPH oxidases inhibitors, Nox4 inhibitor, and Nox4 small interfering RNA (siRNA). Overexpression of Nox4 almost abolished the inhibitory effect of Tan on Dex-induced cell injury and apoptosis. The results also demonstrated significant involvement of Nox4 in the Dex-induced apoptosis. Nox4-derived ROS led to apoptosis through activation of intrinsic mitochondrial pathway. Additionally, we evidenced that Tan reversed Dex-induced apoptosis via inactivation of Nox4. The present findings suggest that inhibition of Nox4 may be a novel therapeutic approach of Tan to prevent against glucocorticoids-induced osteoblasts apoptosis and osteoporosis.
Collapse
Affiliation(s)
- Jia Li
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Chongru He
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Wenwen Tong
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Yuming Zou
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Dahe Li
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Chen Zhang
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| | - Weidong Xu
- Department of Orthopedics, Changhai Hospital, Second Military Medical University Shanghai 200433, P. R. China
| |
Collapse
|
33
|
Huang Y, Li W, Su ZY, Kong ANT. The complexity of the Nrf2 pathway: beyond the antioxidant response. J Nutr Biochem 2015; 26:1401-13. [PMID: 26419687 DOI: 10.1016/j.jnutbio.2015.08.001] [Citation(s) in RCA: 306] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 08/03/2015] [Indexed: 12/11/2022]
Abstract
The NF-E2-related factor 2 (Nrf2)-mediated signalling pathway provides living organisms an efficient and pivotal line of defensive to counteract environmental insults and endogenous stressors. Nrf2 coordinates the basal and inducible expression of antioxidant and Phase II detoxification enzymes to adapt to different stress conditions. The stability and cellular distribution of Nrf2 is tightly controlled by its inhibitory binding protein Kelch-like ECH-associated protein 1. Nrf2 signalling is also regulated by posttranslational, transcriptional, translational and epigenetic mechanisms, as well as by other protein partners, including p62, p21 and IQ motif-containing GTPase activating protein 1. Many studies have demonstrated that Nrf2 is a promising target for preventing carcinogenesis and other chronic diseases, including cardiovascular diseases, neurodegenerative diseases and pulmonary injury. However, constitutive activation of Nrf2 in advanced cancer cells may confer drug resistance. Here, we review the molecular mechanisms of Nrf2 signalling, the diverse classes of Nrf2 activators, including bioactive nutrients and other chemicals, and the cellular functions and disease relevance of Nrf2 and discuss the dual role of Nrf2 in different contexts.
Collapse
Affiliation(s)
- Ying Huang
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Wenji Li
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Zheng-yuan Su
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ah-Ng Tony Kong
- Department of Pharmaceutics, Earnest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
| |
Collapse
|
34
|
Zhang S, Li D, Yang JY, Yan TB. Plumbagin protects against glucocorticoid-induced osteoporosis through Nrf-2 pathway. Cell Stress Chaperones 2015; 20:621-9. [PMID: 25939783 PMCID: PMC4463920 DOI: 10.1007/s12192-015-0585-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 03/14/2015] [Accepted: 03/18/2015] [Indexed: 11/25/2022] Open
Abstract
Long-term and high-dose glucocorticoids (GCs) supplementation has been linked to osteoporosis. In this study, we studied the protective role of plumbagin against GC-induced cell damage in MC3T3-E1 cells. The effect of dexamethasone (DEX) and plumbagin on cell viability was determined. DEX showed as IC-50 value of 95 μM. Further, 10 μM plumbagin treatment effectively ameliorated DEX-induced cell death by increasing the cell viability to 92 %. A further effect of plumbagin on DEX-induced oxidative stress was determined through reactive oxygen species (ROS) level, lipid peroxide content, and antioxidant status. Nrf-2 nuclear localization was analyzed through immunofluorescence. Protein expression of redox regulator Nrf-2 and their target genes HO-1 and NQO1 and osteogenic markers (OCN, OPN Runx-2) were determined by Western blot. Apoptotic effect was analyzed by mitochondrial membrane potential and caspase activities (3, 8, and 9). The results showed that DEX treatment showed a significant increase in oxidative stress through increased ROS levels and downregulation of cytoprotective antioxidant proteins and antioxidant enzyme activities. Further DEX treatment downregulated the osteogenic markers and upregulated apoptosis through decreased mitochondrial membrane potential and upregulation of caspase activities. Plumbagin treatment significantly reversed the levels of oxidative stress and apoptotic markers and protected against DEX-induced cell damage. Further, plumbagin treatment significantly improved the expression of osteogenic markers compared to DEX treatment. In conclusion, the present study shows that plumbagin offers significant protective role against DEX-induced cellular damage via regulating oxidative stress, apoptosis, and osteogenic markers.
Collapse
Affiliation(s)
- Shuai Zhang
- />Department of Orthopedics, Qilu Hospital of Shandong University, No. 107 Wenhuaxi Road, Jinan, Shandong 250012 China
| | - Dong Li
- />Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021 China
| | - Jing-Yan Yang
- />Department of Pathology, The Second Hospital of Shandong University, Jinan, Shandong 250033 China
| | - Ting-Bin Yan
- />Department of Orthopedics, Qilu Hospital of Shandong University, No. 107 Wenhuaxi Road, Jinan, Shandong 250012 China
| |
Collapse
|
35
|
Lin H, Gao X, Chen G, Sun J, Chu J, Jing K, Li P, Zeng R, Wei B. Indole-3-carbinol as inhibitors of glucocorticoid-induced apoptosis in osteoblastic cells through blocking ROS-mediated Nrf2 pathway. Biochem Biophys Res Commun 2015; 460:422-7. [PMID: 25795137 DOI: 10.1016/j.bbrc.2015.03.049] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 03/10/2015] [Indexed: 02/07/2023]
Abstract
Apoptosis of osteoblasts induced by glucocorticoid (GC) has been identified as a main cause of osteoporosis, bone loss and fractures, and the oxidative stress was found as an important contributor. Therefore, natural or synthetic agents with antioxidant activities can antagonize GCs-induced apoptosis in osteoblasts, and thus demonstrate the potential application to reverse osteoporosis. In this study, we showed that, indole-3-carbinol (I3C), a natural product found in broadly consumed plants of the Brassica genus, could block the cytotoxic effects of dexamethasone (Dex), and elucidated the underlying molecular mechanisms. Firstly, we showed that, I3C could effectively suppress Dex-induced cytotoxicity and apoptotic cell death in osteoblastic cells, as evidenced by the decrease in Sub-G1 cell population. Treatment of the cells with Dex resulted in activation of caspase-3/-8/-9 and subsequent cleavage of PARP, which was also effectively blocked by co-incubation of I3C. Moreover, exposure to Dex triggered a rapid onset and time-dependent superoxide overproduction in osteoblastic cells, which was effectively suppressed by addition of I3C. Excess intracellular ROS induced by Dex significantly suppressed the expression levels of Nrf2 and the downstream effectors, HO1 and NQO1, but these changes could be reversed by I3C. Knockdown of Nrf2 using siRNA silencing technique significantly reversed the protective effects of I3C against Dex-induced apoptosis and ROS generation. Taken together, I3C can reverse cytotoxicity of Dex through blocking ROS overproduction and enhancement of Nrf2 expression. This study may provide a safe and good strategy for molecular intervention of GCs-induced osteoporosis by using natural products.
Collapse
Affiliation(s)
- Hao Lin
- Department of Spinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Xiang Gao
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Guanghua Chen
- Department of Spinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Jiecong Sun
- Department of Spinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Jiaqi Chu
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China; Laboratory Institute of Minimally Invasive Orthopedic Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Kaipeng Jing
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Peng Li
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Rong Zeng
- Department of Spinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China; Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China; Laboratory Institute of Minimally Invasive Orthopedic Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China.
| | - Bo Wei
- Department of Spinal Surgery, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China.
| |
Collapse
|
36
|
Srovnalova A, Vanduchova A, Svecarova M, Anzenbacherova E, Tomankova V, Anzenbacher P, Dvorak Z. Effects of sulforaphane and its S- and R-enantiomers on the expression and activities of human drug-metabolizing cytochromes P450. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
|
37
|
Glade MJ, Meguid MM. A Glance at… Broccoli, glucoraphanin, and sulforaphane. Nutrition 2015; 31:1175-8. [PMID: 26004191 DOI: 10.1016/j.nut.2015.03.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 03/06/2015] [Accepted: 03/08/2015] [Indexed: 02/07/2023]
Affiliation(s)
| | - Michael M Meguid
- Professor Emeritus, Surgery, Neuroscience and Nutrition, Department of Surgery, University Hospital, Upstate Medical University, Syracuse, New York
| |
Collapse
|
38
|
Jeong J, Park H, Hyun H, Kim J, Kim H, Oh HI, Hwang HS, Kim DK, Kim HH. Effects of Glucosinolates from Turnip (Brassica rapa L.) Root on Bone Formation by Human Osteoblast-Like MG-63 Cells and in Normal Young Rats. Phytother Res 2015; 29:902-9. [PMID: 25809011 DOI: 10.1002/ptr.5331] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/25/2015] [Accepted: 02/26/2015] [Indexed: 11/11/2022]
Abstract
Turnip (Brassica rapa L.) root ethanol extract (TRE) was prepared, and its chemical constituents were characterized by ultra-performance liquid chromatography and mass spectrometry. Thirteen glucosinolates (GSLs) were identified, comprising eight aliphatic, four indolic, and one aromatic compounds. The effects of these GSLs on bone formation were investigated in vitro by incubating human osteoblast-like MG-63 cells with TRE and then analyzing their viability, alkaline phosphatase (ALP) activity, collagen content, and mineralization and in vivo by administering TRE orally to normal young rats (500 mg/kg/day) and assessing subsequent changes in serum osteocalcin and bone microstructure in these animals. No TRE-related toxicity was found, and the levels of cell viability, ALP activity, collagen synthesis, and mineralization were significantly increased relative to the negative control. In particular, stimulatory effects on the differentiation of MG-63 cells were strongly enhanced as compared with a positive control (daidzein). Serum osteocalcin was also significantly increased, and some important bone microstructural parameters were improved in TRE-administered rats compared with their saline-administered counterparts. GSLs therefore appear to have a stimulatory effect on bone formation in both MG-63 cells and normal young rats. This is the first report on the usefulness of turnip root and its GSL compounds for bone formation.
Collapse
Affiliation(s)
- Jaehoon Jeong
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Heajin Park
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Hanbit Hyun
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Jihye Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Haesung Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Hyun Il Oh
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Hye Seong Hwang
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Dae Kyong Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| | - Ha Hyung Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea
| |
Collapse
|
39
|
Spiers JG, Chen HJC, Sernia C, Lavidis NA. Activation of the hypothalamic-pituitary-adrenal stress axis induces cellular oxidative stress. Front Neurosci 2015; 8:456. [PMID: 25646076 PMCID: PMC4298223 DOI: 10.3389/fnins.2014.00456] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/24/2014] [Indexed: 12/23/2022] Open
Abstract
Glucocorticoids released from the adrenal gland in response to stress-induced activation of the hypothalamic-pituitary-adrenal (HPA) axis induce activity in the cellular reduction-oxidation (redox) system. The redox system is a ubiquitous chemical mechanism allowing the transfer of electrons between donor/acceptors and target molecules during oxidative phosphorylation while simultaneously maintaining the overall cellular environment in a reduced state. The objective of this review is to present an overview of the current literature discussing the link between HPA axis-derived glucocorticoids and increased oxidative stress, particularly focussing on the redox changes observed in the hippocampus following glucocorticoid exposure.
Collapse
Affiliation(s)
- Jereme G Spiers
- School of Biomedical Sciences, The University of Queensland Brisbane, QLD, Australia
| | | | - Conrad Sernia
- School of Biomedical Sciences, The University of Queensland Brisbane, QLD, Australia
| | - Nickolas A Lavidis
- School of Biomedical Sciences, The University of Queensland Brisbane, QLD, Australia
| |
Collapse
|
40
|
Cheng Y, Wang WL, Liang JJ. Genistein attenuates glucocorticoid-induced bone deleterious effects through regulation Eph/ephrin expression in aged mice. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:394-403. [PMID: 25755727 PMCID: PMC4348890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE This study was performed to investigate bone deteriorations and the involvement of skeletal Eph/ephrin signaling pathway of GIOP aged mice in response to the treatment of genistein. METHODS The biomarkers in serum and urine were measured, tibias were taken for the measurement on gene and protein expression and histomorphology analysis, and femurs were taken for the measurement on bone Ca and three-dimensional architecture of trabecular bone. RESULTS Genistein showed a greater increase in bone Ca, BMD and significantly increased FGF-23 and OCN, reduced TRACP-5b, PTH and CTX in GIOP mice. Genistein reversed DXM-induced trabecular deleterious effects and stimulated bone remodeling. The treatment of DXM group with genistein significantly elevated the ratio of OPG/RANKL. Moreover, genistein administration down-regulated the mRNA and protein expression of Eph A2 and ephrin A2 in tibia of the GIOP mice. In contrast, the mRNA and protein expression of Eph B4 and ephrin B2 were increased in mice treated by DXM with genistein as compared to the DXM single treatment. CONCLUSIONS DXM-induced trabecular bone micro-structure deterioration in aged mice was involved in the regulation of the Eph receptors and ephrin ligands. Genistein might represent a therapy with bone-forming as well as an anti-resorptive activity in GIOP mice. The underlying mechanism was mediated, at least partially, through regulation Eph/ephrin signaling.
Collapse
Affiliation(s)
- Yuan Cheng
- Department of Endocrinology, The Second Affiliated Hospital of Anhui Medical University678 Furong Road, Hefei 230601, China
| | - Wei-Lin Wang
- 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, The Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University66 Tongan Road, Tianjin 300070, China
| | - Jun-Jun Liang
- Department of Neurosurgery, The People’s Hospital of Anqiu246 Jiankang Road, Weifang 262100, China
| |
Collapse
|