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Cao N, Liu X, Hou Y, Deng Y, Xin Y, Xin X, Xiang X, Liu X, Yu W. 18-α-glycyrrhetinic acid alleviates oxidative damage in periodontal tissue by modulating the interaction of Cx43 and JNK/NF-κB pathways. Front Pharmacol 2023; 14:1221053. [PMID: 37538174 PMCID: PMC10394238 DOI: 10.3389/fphar.2023.1221053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/10/2023] [Indexed: 08/05/2023] Open
Abstract
Objective: Periodontitis is a common chronic inflammatory disease in which oxidative stress is one of the key pathogenic factors. Connexin43 (Cx43) is the most critical and widely distributed connexin isoform. When the organism undergoes a severe and sustained stress response, Cx43-mediated gap junctions (GJs) are believed to underlie the biology of tissue injury exacerbation and amplification. Notably, 18-α-glycyrrhetinic acid (GA) is a classical pharmacological inhibitor of GJs and has antioxidant potential. However, the regulatory role of GA in the redox signaling of periodontal tissues and the potential mechanisms of Cx43 in the pathogenesis of periodontitis remain uncertain. Methods: In this study, we evaluated the effects and mechanisms of GA in alleviating oxidative damage of periodontal tissues and cells by constructing an H2O2-induced oxidative stress model in human periodontal ligament cells (hPDLCs) and a periodontitis model in rats. Results: Cellular experiments showed that GA effectively attenuated H2O2-induced oxidative damage in hPDLCs by inhibiting the expression and function of Cx43. In addition, pretreatment of hPDLCs with either GA or SP600125 (a JNK inhibitor) inhibited the Cx43/JNK/NF-κB pathway, restored cell viability, and reduced apoptosis. Animal experiment results showed that GA intervention reduced alveolar bone resorption and periodontal tissue destruction, inhibited osteoclast differentiation, improved mitochondrial structural abnormalities and dysfunction in periodontal tissue, and decreased oxidative stress levels and apoptosis in rats with periodontitis. Conclusion: Overall, our findings suggest that the Cx43/JNK/NF-κB pathway may play a vital role to promote periodontitis progression, while GA reduces oxidative stress and apoptosis by inhibiting the interaction of Cx43 and JNK/NF-κB pathways, thus alleviating oxidative damage in the periodontal tissues.
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Affiliation(s)
- Niuben Cao
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xiaomeng Liu
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yubo Hou
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yu Deng
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yu Xin
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xirui Xin
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xinchen Xiang
- Department of Periodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xinchan Liu
- Department of Dental Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Weixian Yu
- Department of Geriatric Stomatology, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China
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2
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Bott KN, Feldman E, de Souza RJ, Comelli EM, Klentrou P, Peters SJ, Ward WE. Lipopolysaccharide-Induced Bone Loss in Rodent Models: A Systematic Review and Meta-Analysis. J Bone Miner Res 2023; 38:198-213. [PMID: 36401814 PMCID: PMC10107812 DOI: 10.1002/jbmr.4740] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 11/21/2022]
Abstract
Osteoporosis has traditionally been characterized by underlying endocrine mechanisms, though evidence indicates a role of inflammation in its pathophysiology. Lipopolysaccharide (LPS), a component of gram-negative bacteria that reside in the intestines, can be released into circulation and stimulate the immune system, upregulating bone resorption. Exogenous LPS is used in rodent models to study the effect of systemic inflammation on bone, and to date a variety of different doses, routes, and durations of LPS administration have been used. The study objective was to determine whether systemic administration of LPS induced inflammatory bone loss in rodent models. A systematic search of Medline and four other databases resulted in a total of 110 studies that met the inclusion criteria. Pooled standardized mean differences (SMDs) and corresponding 95% confidence intervals (CI) with a random-effects meta-analyses were used for bone volume fraction (BV/TV) and volumetric bone mineral density (vBMD). Heterogeneity was quantified using the I2 statistic. Shorter-term (<2 weeks) and longer-term (>2 weeks) LPS interventions were analyzed separately because of intractable study design differences. BV/TV was significantly reduced in both shorter-term (SMD = -3.79%, 95% CI [-4.20, -3.38], I2 62%; p < 0.01) and longer-term (SMD = -1.50%, 95% CI [-2.00, -1.00], I2 78%; p < 0.01) studies. vBMD was also reduced in both shorter-term (SMD = -3.11%, 95% CI [-3.78, -2.44]; I2 72%; p < 0.01) and longer-term (SMD = -3.49%, 95% CI [-4.94, -2.04], I2 82%; p < 0.01) studies. In both groups, regardless of duration, LPS negatively impacted trabecular bone structure but not cortical bone structure, and an upregulation in bone resorption demonstrated by bone cell staining and serum biomarkers was reported. This suggests systemically delivered exogenous LPS in rodents is a viable model for studying inflammatory bone loss, particularly in trabecular bone. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Kirsten N Bott
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Evelyn Feldman
- Lakehead University Library, Lakehead University, Thunder Bay, ON, Canada
| | - Russell J de Souza
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.,Population Health Research Institute, Hamilton Health Sciences Corporation, Hamilton, ON, Canada
| | - Elena M Comelli
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada.,Joannah and Brian Lawson Centre for Child Nutrition, University of Toronto, Toronto, ON, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Sandra J Peters
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Wendy E Ward
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada.,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada.,Department of Health Sciences, Brock University, St. Catharines, ON, Canada
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3
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Ye C, Zhang W, Zhao Y, Zhang K, Hou W, Chen M, Lu J, Wu J, He R, Gao W, Zheng Y, Cai X. Prussian Blue Nanozyme Normalizes Microenvironment to Delay Osteoporosis. Adv Healthc Mater 2022; 11:e2200787. [PMID: 35851764 DOI: 10.1002/adhm.202200787] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/21/2022] [Indexed: 01/27/2023]
Abstract
Osteoporosis (OP) is the most common orthopedic disease in the elderly and the main cause of age-related mortality and disability. However, no satisfactory intervention is currently available in clinical practice. Thus, an effective therapy to prevent or delay the development of OP should be devised. Osteoclastogenesis overactivation and excessive bone resorption are the main characteristics of OP. Accordingly, a paradigm for nanozyme-mediated normalization of the disease microenvironment to regulate osteoclast differentiation and delay OP is proposed. Hollow Prussian blue nanozymes (HPBZs) are prepared via template-free hydrothermal synthesis and selected as representative nanozymes. The intrinsic osteoclast activity-remodeling bioactivities of the HPBZs are explored in vitro and in vivo, focusing on their impact on osteogenesis and specific molecular mechanisms using an OP murine model. The HPBZs significantly normalize the OP microenvironment, thereby inhibiting osteoclast formation and osteoclast resorption, possibly owing to the suppression of intracellular reactive oxygen species generation, the mitogen-activated protein kinase, and nuclear factor κB signaling pathways. Consistently, in an ovariectomy-induced OP murine model, HPBZ treatment significantly attenuates osteoporotic bone loss in vivo. The findings confirm the HPBZ-mediated normalization of the disease microenvironment for the treatment of OP and suggest its application to other inflammation-related diseases.
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Affiliation(s)
- Chenyi Ye
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.,Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
| | - Wei Zhang
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.,Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
| | - Yongzheng Zhao
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Kai Zhang
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Weiduo Hou
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.,Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
| | - Mo Chen
- Department of Rheumatology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Jinwei Lu
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.,Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
| | - Jianrong Wu
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Rongxin He
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.,Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.,Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
| | - Wei Gao
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Yuanyi Zheng
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Xiaojun Cai
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
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4
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Li Q, Zhang X, Li S, Li W, Teng Y, Zhou Y, Xiong H. Carnosol alleviates sevoflurane-induced cognitive dysfunction by mediating NF-κB pathway in aged rats. Drug Dev Res 2022; 83:1342-1350. [PMID: 35781309 DOI: 10.1002/ddr.21963] [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: 02/24/2022] [Revised: 05/06/2022] [Accepted: 06/07/2022] [Indexed: 11/11/2022]
Abstract
Postoperative Cognitive Dysfunction (POCD) is a neurological disorder of unconsciousness due to cognitive regression after surgical anesthesia. However, the specific mechanism has not yet been clarified. Sevoflurane (SEV) is one of the most commonly used anesthetics in clinical practice, and how SEV mediates the generation of POCD is unclear. Carnosol, a natural ingredient, has been reported to have various beneficial effects such as anti-inflammatory, immune enhancement, and so forth, but how it ameliorates SEV-mediated neurotoxicity remains unclear. This study aimed to induce a POCD model in aged rats by SEV and to elucidate how Carnosol ameliorated SEV-mediated neurotoxicity. The effects of Carnosol on the expression of inflammatory factors in rat hippocampus mediated by SEV were determined by enzyme-linked immunoassay and polymerase chain reaction experiments; the effects of Carnosol on the expressions of Iba-1 and glial fibrillary acidic protein after SEV-mediated activation of rat microglia were clarified by immunofluorescence and Western blotting (WB); The effects of Carnosol on SEV-mediated neuronal apoptosis were studied by terminal deoxynucleotidyl transferase dUTP nick end labeling and WB; the specific signaling pathways regulated by Carnosol were elucidated by WB. The results showed that Carnosol can improve the cognitive dysfunction and reduce neuroinflammation in aged rats induced by SEV; Carnosol can reduce the activation of microglia and inhibit neuronal apoptosis in aged rats induced by SEV; Carnosol can phosphorylate p65 and nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha regulates the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway. Carnosol can attenuate SEV-induced neuroinflammation, prevent microglial activation and inhibit neuronal apoptosis by modulating the NF-κB pathway.
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Affiliation(s)
- Qing Li
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang, Sichuan, China
| | - Xianjie Zhang
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang, Sichuan, China
| | - Siyuan Li
- Department of Anesthesia and Comfort Health Center, Xi'an International Medical Center Hospital, Xi'an, Shaanxi, China
| | - Wen Li
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang, Sichuan, China
| | - Yunpeng Teng
- Department of Anesthesia and Comfort Health Center, Xi'an International Medical Center Hospital, Xi'an, Shaanxi, China
| | - Yukai Zhou
- Department of Anesthesiology, People's Hospital of Deyang City, Deyang, Sichuan, China
| | - Hongfei Xiong
- Department of Anesthesia and Comfort Health Center, Xi'an International Medical Center Hospital, Xi'an, Shaanxi, China
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5
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Anderson SL, Fasih-Ahmad F, Evans AJ, Rubin BY. Carnosol, a diterpene present in rosemary, increases ELP1 levels in familial Dysautonomia (FD) patient-derived cells and healthy adults: a possible therapy for FD. Hum Mol Genet 2022; 31:3521-3538. [PMID: 35708500 DOI: 10.1093/hmg/ddac133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/12/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Recent research on Familial Dysautonomia (FD) has focused on the development of therapeutics that facilitate the production of the correctly spliced, exon 20-containing, transcript in cells and individuals bearing the splice-altering, FD-causing, mutation in the ELP1 gene. We report here the ability of carnosol, a diterpene present in plant species of the Lamiaceae family, including rosemary, to enhance the cellular presence of the correctly spliced ELP1 transcript in FD patient-derived fibroblasts by upregulating transcription of the ELP1 gene and correcting the aberrant splicing of the ELP1 transcript. Carnosol treatment also elevates the level of the RBM24 and RBM38 proteins., two multifunctional RNA binding proteins. Transfection-mediated expression of either of these RBMs facilitates the inclusion of exon 20 sequence into the transcript generated from a minigene bearing ELP1 genomic sequence containing the FD-causing mutation. Suppression of the carnosol-mediated induction of either of these RBMs, using targeting siRNAs, limited the carnosol-mediated inclusion of the ELP1 exon 20 sequence. Carnosol treatment of FD patient PBMCs facilitates the inclusion of exon 20 into the ELP1 transcript. Increased levels of the ELP1 and RBM38 transcripts and the alternative splicing of the SIRT2 transcript, a sentinel for exon 20 inclusion in the FD-derived ELP1 transcript, are observed in RNA isolated from whole blood of healthy adults following the ingestion of carnosol-containing rosemary extract. These findings and the excellent safety profile of rosemary together justify an expedited clinical study of the impact of carnosol on the FD patient population.
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Affiliation(s)
- Sylvia L Anderson
- Laboratory for Familial Dysautonomia Research, Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA
| | - Faaria Fasih-Ahmad
- Laboratory for Familial Dysautonomia Research, Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA
| | - Anthony J Evans
- Laboratory for Familial Dysautonomia Research, Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA
| | - Berish Y Rubin
- Laboratory for Familial Dysautonomia Research, Department of Biological Sciences, Fordham University, Bronx, NY 10458, USA
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6
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Chen Y, Gulinuer A, Zhao J. Lipopolysaccharide induces oxidative stress and inhibits osteogenic differentiation in periodontal ligament stem cells through downregulating Nrf2. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00253-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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7
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Jin M, Nie J, Zhu J, Li J, Fang T, Xu J, Jiang X, Chen Z, Li J, Wu F. Acacetin inhibits RANKL-induced osteoclastogenesis and LPS-induced bone loss by modulating NFATc1 transcription. Biochem Biophys Res Commun 2021; 583:146-153. [PMID: 34763194 DOI: 10.1016/j.bbrc.2021.10.066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 01/12/2023]
Abstract
Osteolytic disorders are characterized by impaired bone volume and trabecular structure that leads to severe fragility fractures. Studies have shown that excessive osteoclast activity causes impaired bone microstructure, a sign of osteolytic diseases such as osteoporosis. Approaches of inhibiting osteoclastogenesis and bone resorption specifically could prevent osteoporosis and other osteolytic disorders. Acacetin is a potent molecule extracted from plants with anti-cancer and anti-inflammatory bioactivities. Here, we demonstrated, for the first time, that acacetin repressed osteoclastogenesis, formation of F-actin rings, bone resorption activity, and osteoclast-related gene expression in vitro through modulating ERK, P38, and NF-κB signaling pathways and preventing expression of NFATc1. Micro-CT and H & E staining results indicated that acacetin alleviated LPS-induced osteolysis in vivo. Overall, our findings suggested that acacetin could help to prevent osteoporosis and other osteoclast-related osteolytic disorders.
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Affiliation(s)
- Mingchao Jin
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China
| | - Jiangbo Nie
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China.
| | - Juli Zhu
- Department of Orthopedics, Huzhou Traditional Chinese Medicine Hospital, Affiliated to Zhejiang Chinese Medical University, NO.315, South Street, Huzhou, 313000, Zhejiang, China
| | - Jing Li
- Department of Physiology, Huzhou University, NO.759, Second Ring East Road, Huzhou, 313000, Zhejiang, China
| | - Tianshun Fang
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China
| | - Juntao Xu
- Department of Orthopedics, Huzhou Traditional Chinese Medicine Hospital, Affiliated to Zhejiang Chinese Medical University, NO.315, South Street, Huzhou, 313000, Zhejiang, China
| | - Xuesheng Jiang
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China
| | - Zhuo Chen
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China
| | - Jianyou Li
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China.
| | - Fengfeng Wu
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, NO.1558, Third Ring North Road, Huzhou, 313000, Zhejiang, China.
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