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Sampoerno G, Supriyanto E, Wahjuningrum DA, Larasati AA, Ardiani D, Surboyo MDC, Bhardwaj A, Ates AA. LPS-Induced Neuron Cell Apoptosis through TNF-α and Cytochrome c Expression in Dental Pulp. Eur J Dent 2024; 18:604-609. [PMID: 38049119 PMCID: PMC11132783 DOI: 10.1055/s-0043-1774329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023] Open
Abstract
OBJECTIVES Inflammation of the dental pulp tissue caused by bacteria, creating an immunology response of death of the dental pulp, is called apoptosis. The Porphyromonas gingivalis that cause apoptosis is lipopolysaccharide (LPS) through toll-like receptor (TLR) via two different mechanisms, intracellular and extracellular pathways. This study analyzed the role of LPS exposure of neuron cells, tumor necrosis factor-α (TNF-α), and cytochrome c (cyt-c) expression in the dental pulp to predict the possible mechanism of apoptosis. MATERIALS AND METHODS The lower tooth of Sprague Dawley rats was opened and exposed to LPS for 48 hours. Then the neuron cell analyzed histopathology using hematoxylin-eosin, whereas the TNF-α and cyt-c expression with indirect immunohistochemistry using a light microscope. The relationship between neuron cells with TNF-α and cyt-c was analyzed using stepwise regression linear analysis. RESULT The LPS exposure showed a lower number of neuron cells and had a relationship with TNF-α expression but not with cyt-c, while compared with control, both TNF-α and cyt-c expression were higher in neuron cells. CONCLUSION LPS exposure in dental pulp is possible to stimulate the apoptosis process through extracellular pathways marked by higher TNF-α expression.
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Affiliation(s)
- Galih Sampoerno
- Department of Conservative Dentistry, Faculty of Dental Medicine, Univeristas Airlangga, Surabaya, Indonesia
| | - Eddo Supriyanto
- Conservative Dentistry Specialist Program, Faculty of Dental Medicine, Univeristas Airlangga, Surabaya, Indonesia
| | - Dian Agustin Wahjuningrum
- Department of Conservative Dentistry, Faculty of Dental Medicine, Univeristas Airlangga, Surabaya, Indonesia
| | - Aghnia Alma Larasati
- Conservative Dentistry Specialist Program, Faculty of Dental Medicine, Univeristas Airlangga, Surabaya, Indonesia
| | - Dinda Ardiani
- Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Anuj Bhardwaj
- Department of Conservative Dentistry and Endodontic, Collage of Dental Science and Hospital, Rau, Indore, Madhya Pradesh, India
| | - Ayver Atav Ates
- Department of Endodontic, Faculty of Dentistry, Istinye University, Istanbul, Turkiye
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Noori Z, Sharifi M, Dastghaib S, Kejani FB, Roohy F, Ansari Z, Maleki MH, Siri M, Shafiee SM. Quercetin declines LPS induced inflammation and augments adiponectin expression in 3T3-L1 differentiated adipocytes SIRT-1 dependently. Mol Biol Rep 2024; 51:445. [PMID: 38520487 DOI: 10.1007/s11033-024-09334-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 02/07/2024] [Indexed: 03/25/2024]
Abstract
BACKGROUND Inflammation is an important factor contributing to obesity-induced metabolic disorders. Different investigations confirm that local inflammation in adipose issues is the primary reason for such disorder, resulting in low-grade systemic inflammation. Anti-inflammatory, antioxidant, and epigenetic modification are among the varied properties of Quercetin (QCT) as a natural flavonoid. OBJECTIVE The precise molecular mechanism followed by QCT to alleviate inflammation has been unclear. This study explores whether the anti-inflammatory effects of QCT in 3T3-L1 differentiated adipocytes may rely on SIRT-1. METHODS The authors isolated 3T3-L1 pre-adipocyte cells and exposed them to varying concentrations of QCT, lipopolysaccharide (LPS), and a selective inhibitor of silent mating type information regulation 2 homolog 1 (SIRT-1) called EX-527. After determining the optimal dosages of QCT, LPS, and EX-527, they assessed the mRNA expression levels of IL-18, IL-1, IL-6, TNF-α, SIRT-1, and adiponectin using quantitative reverse transcription-polymerase chain reaction (qRT-PCR). RESULTS The study showed considerable cytotoxic effects of LPS (200 ng/mL) + QCT (100 µM) + EX-527 (10 µM) on 3T3-L1 differentiated adipocytes after 48 h of incubation. QCT significantly upregulated the expression levels of adiponectin and SIRT-1 (p < 0.0001). However, introducing SIRT-1 inhibitor (p < 0.0001) reversed the impact of QCT on adiponectin expression. Additionally, QCT reduced SIRT-1-dependent pro-inflammatory cytokines in 3T3-L1 differentiated adipocytes (p < 0.0001). CONCLUSION This study revealed that QCT treatment reduced crucial pro-inflammatory cytokines levels and increased adiponectin levels following LPS treatment. This finding implies that SIRT-1 may be a crucial factor for the anti-inflammatory activity of QCT.
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Affiliation(s)
- Zahra Noori
- Department of Anatomical sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Sharifi
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Sanaz Dastghaib
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Science, Shiraz, Iran
- Autophagy Research center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Basiri Kejani
- Department of Medical Nanotechnology, School of advanced sciences and technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Fatemeh Roohy
- Department of Genetics, Islamic Azad University, Kazerun, Iran
| | - Zahra Ansari
- Department of Genetics, Faculty of Biological Sciences and Technology, Shahid Ashrafi Esfahani university, Esfahan, Iran
| | - Mohammad Hasan Maleki
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Morvarid Siri
- Autophagy Research Centre, Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sayed Mohammad Shafiee
- Autophagy Research Centre, Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
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3
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Deng Y, Xiao J, Ma L, Wang C, Wang X, Huang X, Cao Z. Mitochondrial Dysfunction in Periodontitis and Associated Systemic Diseases: Implications for Pathomechanisms and Therapeutic Strategies. Int J Mol Sci 2024; 25:1024. [PMID: 38256098 PMCID: PMC10816612 DOI: 10.3390/ijms25021024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 01/04/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Periodontitis is a chronic infectious disorder damaging periodontal tissues, including the gingiva, periodontal ligament, cementum, and alveolar bone. It arises from the complex interplay between pathogenic oral bacteria and host immune response. Contrary to the previous view of "energy factories", mitochondria have recently been recognized as semi-autonomous organelles that fine-tune cell survival, death, metabolism, and other functions. Under physiological conditions, periodontal tissue cells participate in dynamic processes, including differentiation, mineralization, and regeneration. These fundamental activities depend on properly functioning mitochondria, which play a crucial role through bioenergetics, dynamics, mitophagy, and quality control. However, during the initiation and progression of periodontitis, mitochondrial quality control is compromised due to a range of challenges, such as bacterial-host interactions, inflammation, and oxidative stress. Currently, mounting evidence suggests that mitochondria dysfunction serves as a common pathological mechanism linking periodontitis with systemic conditions like type II diabetes, obesity, and cardiovascular diseases. Therefore, targeting mitochondria to intervene in periodontitis and multiple associated systemic diseases holds great therapeutic potential. This review provides advanced insights into the interplay between mitochondria, periodontitis, and associated systemic diseases. Moreover, we emphasize the significance of diverse therapeutic modulators and signaling pathways that regulate mitochondrial function in periodontal and systemic cells.
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Affiliation(s)
- Yifei Deng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
| | - Junhong Xiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
| | - Li Ma
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Chuan Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Xiaoxuan Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Xin Huang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Zhengguo Cao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China; (Y.D.)
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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Luo S, Xu T, Zheng Q, Jiang A, Zhao J, Ying Y, Liu N, Pan Y, Zhang D. Mitochondria: An Emerging Unavoidable Link in the Pathogenesis of Periodontitis Caused by Porphyromonas gingivalis. Int J Mol Sci 2024; 25:737. [PMID: 38255811 PMCID: PMC10815845 DOI: 10.3390/ijms25020737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a key pathogen of periodontitis. Increasing evidence shows that P. gingivalis signals to mitochondria in periodontal cells, including gingival epithelial cells, gingival fibroblast cells, immune cells, etc. Mitochondrial dysfunction affects the cellular state and participates in periodontal inflammatory response through the aberrant release of mitochondrial contents. In the current review, it was summarized that P. gingivalis induced mitochondrial dysfunction by altering the mitochondrial metabolic state, unbalancing mitochondrial quality control, prompting mitochondrial reactive oxygen species (ROS) production, and regulating mitochondria-mediated apoptosis. This review outlines the impacts of P. gingivalis and its virulence factors on the mitochondrial function of periodontal cells and their role in periodontitis.
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Affiliation(s)
- Shiyin Luo
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Tong Xu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Qifan Zheng
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Aijia Jiang
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Jiahui Zhao
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Yue Ying
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Nan Liu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Yaping Pan
- Department of Periodontics and Oral Biology, School of Stomatology, China Medical University, Shenyang 110002, China;
| | - Dongmei Zhang
- Department of Periodontics and Oral Biology, School of Stomatology, China Medical University, Shenyang 110002, China;
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Wu Q, Yan L, Wu X, Chen Y, Ye L, Lv Y, Su Y. Experimental periodontitis induced hypoadiponectinemia by IRE1α-mediated endoplasmic reticulum stress in adipocytes. BMC Oral Health 2023; 23:1032. [PMID: 38129878 PMCID: PMC10740306 DOI: 10.1186/s12903-023-03758-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUD Hypoadiponectinemia is the important cause of insulin resistance. Recent studies have shown that periodontitis is associated with hypoadiponectinemia. The purpose of this study was to investigate the effect of periodontitis-induced endoplasmic reticulum stress (ERS) in visceral adipocytes on hypoadiponectinemia. METHODS Rat periodontitis models were established by local ligation with silk around the bilateral maxillary second molars. Porphyromonas gingivalis-lipopolysaccharid (P.g-LPS) was also used to stimulate the visceral adipocytes in vitro. The protein expression levels of glucose regulated protein 78 (GRP78), inositol-requiring protein 1α (IRE1α), protein kinase RNA-like ER kinase (PERK), activating transcription factor 6 (ATF6) and adiponectin were detected. IRE1α lentiviruses were transfected into visceral adipocytes in vitro, and an IRE1α inhibitor (KIRA6) was injected in epididymal adipose tissue of rats to detect and verify the effect of ERS on adiponectin expression in visceral adipocytes in vivo. RESULTS Hypoadiponectinemia was observed in periodontitis rat, and the expression levels of ERS key proteins GRP78 and the phosphorylation levels of IRE1α (p-IRE1α)/IRE1α in visceral adipocytes were increased, while the expression levels of adiponectin protein were decreased. After KIRA6 injection into epididymal adipose tissue of rats with periodontitis, adiponectin levels in visceral adipocytes increased, and serum adiponectin levels recovered to a certain extent. The protein expression levels of GRP78 and p-IRE1α/IRE1α were increased and adiponectin protein expression was decreased in P.g-LPS-induced visceral adipocytes. Overexpression of IRE1α further inhibited adiponectin expression in P.g-LPS-stimulated visceral adipocytes, and conversely, IRE1α inhibition restored adiponectin expression. CONCLUSIONS Our findings suggest that periodontitis induces ERS in visceral adipocytes leading to hypoadiponectinemia. IRE1α is a key protein regulating adiponectin expression in visceral adipocytes.
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Affiliation(s)
- Qianqi Wu
- Stomatology Center, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, NO.1 Jiazi Road, Foshan, 528300, Guangdong, China
| | - Li Yan
- Stomatology Center, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, NO.1 Jiazi Road, Foshan, 528300, Guangdong, China
| | - Xiao Wu
- Stomatology Center, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, NO.1 Jiazi Road, Foshan, 528300, Guangdong, China
| | - Yiyan Chen
- Stomatology Center, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, NO.1 Jiazi Road, Foshan, 528300, Guangdong, China
| | - Leilei Ye
- Department of Periodontology, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yingtao Lv
- Department of Implantology and Prosthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China.
| | - Yuan Su
- Stomatology Center, Shunde Hospital, Southern Medical University, The First People's Hospital of Shunde, NO.1 Jiazi Road, Foshan, 528300, Guangdong, China.
- Department of Periodontology, Stomatological Hospital, Southern Medical University, Guangzhou, China.
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6
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Du F, Zhu Z, Lai Z, Li K, Chen J, Zhang E, Wang J, Zhao H, Liu B. Imbalance of helper T cell subtypes and adipokine secretion in perivascular adipose tissue as a trigger of atherosclerosis in chronic Porphyromonas gingivalis W83 infection. Microbes Infect 2023; 25:105181. [PMID: 37423325 DOI: 10.1016/j.micinf.2023.105181] [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: 01/30/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/11/2023]
Abstract
Periodontal disease, a prevalent oral disease, is an independent risk factor for atherosclerosis. Porphyromonas gingivalis (P.g), a keystone pathogen of periodontal disease, contributes to the pathogenesis of atherosclerosis. However, the exact mechanism remains unclear. An increasing number of studies have proposed the atherogenic influence of perivascular adipose tissue (PVAT) in pathological conditions including hyperlipidemia and diabetes. Nevertheless, the role of PVAT in atherosclerosis promoted by P.g infection has not been explored. In our study, we investigated the association between P.g colonization in PVAT and progression of atherosclerosis through experiments on clinical samples. We further investigated P.g invasion of PVAT, PVAT inflammation, aortic endothelial inflammation, aortic lipid deposition, and systemic inflammation in C57BL/6 J mice with or without P.g infection at 20, 24, and 28 weeks of age. PVAT inflammation, characterized by imbalance in Th1/Treg and dysregulated adipokine levels, was associated with P.g invasion, preceding endothelial inflammation that occurred independently of its direct invasion. The phenotype of systemic inflammation coincided with that of PVAT inflammation, but systemic inflammation occurred after endothelial inflammation. Therefore PVAT inflammation in early atherosclerosis could be a primary trigger of aortic endothelial inflammation and lipid deposition in chronic P.g infection, through the dysregulated paracrine secretion of T helper-1-related adipokines.
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Affiliation(s)
- Fenghe Du
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China; Peking Union Medical College, MD Program, No 9, Dong Dan San Tiao, Dongcheng District, Beijing, 100730, China
| | - Zhan Zhu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China; Peking Union Medical College, MD Program, No 9, Dong Dan San Tiao, Dongcheng District, Beijing, 100730, China
| | - Zhichao Lai
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Kang Li
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Junye Chen
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China
| | - Erli Zhang
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Disease, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100037, China
| | - Jing Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing, 100005, China
| | - Hongmei Zhao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Department of Pathophysiology, Peking Union Medical College, Beijing, 100005, China.
| | - Bao Liu
- Department of Vascular Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Beijing, 100730, China.
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Jia S, Li X, Du Q. Host insulin resistance caused by Porphyromonas gingivalis-review of recent progresses. Front Cell Infect Microbiol 2023; 13:1209381. [PMID: 37520442 PMCID: PMC10373507 DOI: 10.3389/fcimb.2023.1209381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a Gram-negative oral anaerobic bacterium that plays a key role in the pathogenesis of periodontitis. P. gingivalis expresses a variety of virulence factors that disrupt innate and adaptive immunity, allowing P. gingivalis to survive and multiply in the host and destroy periodontal tissue. In addition to periodontal disease, P.gingivalis is also associated with systemic diseases, of which insulin resistance is an important pathological basis. P. gingivalis causes a systemic inflammatory response, disrupts insulin signaling pathways, induces pancreatic β-cell hypofunction and reduced numbers, and causes decreased insulin sensitivity leading to insulin resistance (IR). In this paper, we systematically review the studies on the mechanism of insulin resistance induced by P. gingivalis, discuss the association between P. gingivalis and systemic diseases based on insulin resistance, and finally propose relevant therapeutic approaches. Overall, through a systematic review of the mechanisms related to systemic diseases caused by P. gingivalis through insulin resistance, we hope to provide new insights for future basic research and clinical interventions for related systemic diseases.
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Affiliation(s)
- Shuxian Jia
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xiaobing Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
- Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Qin Du
- Department of Stomatology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
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8
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Su Y, Ye L, Hu C, Zhang Y, Liu J, Shao L. Periodontitis as a promoting factor of T2D: current evidence and mechanisms. Int J Oral Sci 2023; 15:25. [PMID: 37321994 DOI: 10.1038/s41368-023-00227-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/12/2023] [Accepted: 04/26/2023] [Indexed: 06/17/2023] Open
Abstract
Periodontitis is an infectious disease caused by an imbalance between the local microbiota and host immune response. Epidemiologically, periodontitis is closely related to the occurrence, development, and poor prognosis of T2D and is recognized as a potential risk factor for T2D. In recent years, increasing attention has been given to the role of the virulence factors produced by disorders of the subgingival microbiota in the pathological mechanism of T2D, including islet β-cell dysfunction and insulin resistance (IR). However, the related mechanisms have not been well summarized. This review highlights periodontitis-derived virulence factors, reviews how these stimuli directly or indirectly regulate islet β-cell dysfunction. The mechanisms by which IR is induced in insulin-targeting tissues (the liver, visceral adipose tissue, and skeletal muscle) are explained, clarifying the influence of periodontitis on the occurrence and development of T2D. In addition, the positive effects of periodontal therapy on T2D are overviewed. Finally, the limitations and prospects of the current research are discussed. In summary, periodontitis is worthy of attention as a promoting factor of T2D. Understanding on the effect of disseminated periodontitis-derived virulence factors on the T2D-related tissues and cells may provide new treatment options for reducing the risk of T2D associated with periodontitis.
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Affiliation(s)
- Yuan Su
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, China
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Leilei Ye
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Chen Hu
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanli Zhang
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Jia Liu
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Longquan Shao
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China.
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9
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Ruan Q, Guan P, Qi W, Li J, Xi M, Xiao L, Zhong S, Ma D, Ni J. Porphyromonas gingivalis regulates atherosclerosis through an immune pathway. Front Immunol 2023; 14:1103592. [PMID: 36999040 PMCID: PMC10043234 DOI: 10.3389/fimmu.2023.1103592] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/01/2023] [Indexed: 03/15/2023] Open
Abstract
Atherosclerosis (AS) is a chronic inflammatory disease, involving a pathological process of endothelial dysfunction, lipid deposition, plaque rupture, and arterial occlusion, and is one of the leading causes of death in the world population. The progression of AS is closely associated with several inflammatory diseases, among which periodontitis has been shown to increase the risk of AS. Porphyromonas gingivalis (P. gingivalis), presenting in large numbers in subgingival plaque biofilms, is the “dominant flora” in periodontitis, and its multiple virulence factors are important in stimulating host immunity. Therefore, it is significant to elucidate the potential mechanism and association between P. gingivalis and AS to prevent and treat AS. By summarizing the existing studies, we found that P. gingivalis promotes the progression of AS through multiple immune pathways. P. gingivalis can escape host immune clearance and, in various forms, circulate with blood and lymph and colonize arterial vessel walls, directly inducing local inflammation in blood vessels. It also induces the production of systemic inflammatory mediators and autoimmune antibodies, disrupts the serum lipid profile, and thus promotes the progression of AS. In this paper, we summarize the recent evidence (including clinical studies and animal studies) on the correlation between P. gingivalis and AS, and describe the specific immune mechanisms by which P. gingivalis promotes AS progression from three aspects (immune escape, blood circulation, and lymphatic circulation), providing new insights into the prevention and treatment of AS by suppressing periodontal pathogenic bacteria.
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Affiliation(s)
- Qijun Ruan
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Peng Guan
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Weijuan Qi
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Jiatong Li
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Mengying Xi
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Limin Xiao
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Sulan Zhong
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
| | - Dandan Ma
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
- *Correspondence: Dandan Ma, ; Jia Ni,
| | - Jia Ni
- Department of Periodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, China
- *Correspondence: Dandan Ma, ; Jia Ni,
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Lu J, Wu Q, Chen Y, Ye L, Su Y. Mechanism of Porphyromonas gingivalis-lipopolysaccharide in regulating the insulin signaling pathway in adipocytes via X-box binding protein 1. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2022; 40:148-154. [PMID: 38597046 PMCID: PMC9002194 DOI: 10.7518/hxkq.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/25/2021] [Indexed: 04/11/2024]
Abstract
OBJECTIVES This study aims to investigate the effect of X-box binding protein 1 (XBP1), a key signal molecule of ERS, on the insulin signaling pathway in adipocytes stimulated by Porphyromonas gingivalis (P. gingivalis)-lipopolysaccharide (LPS), a pathogenic bacterium of periodontitis. METHODS Primary cultured rat adipocytes were stimulated by P. gingivalis-LPS (100 ng·mL-1) for 4, 8, 12, and 24 h. The protein expression levels of insulin receptor substrate-1 (IRS-1), phosphoinositide dependent protein kinase (p-PDK-1), and protein kinase B (p-AKT-1) in the insulin signaling pathway were detected by Western blot analysis. pLVX-NC1, pLVX-XBP1, pLVX-NC2, and pLVX-XBP1-RNAi were transfected into adipocytes, respectively. The transfected rat adipocytes were stimulated by P. gingivalis-LPS, and the protein expression of the insulin signaling pathway was detected by Western blot. RESULTS The Western Blot showed decreased protein expression of the insulin signaling pathway in rat adipocytes stimulated with P. gingivalis-LPS compared with the control, and the difference was statistically significant (P<0.05). The protein expression levels of IRS-1, p-PDK-1, and p-AKT in the rat adipocytes of pLVX-XBP1 were significantly higher than those in pLVX-NC1 at 8 and 12 h after P. gingivalis-LPS stimulation (P<0.05). The protein expression levels of IRS-1, p-PDK-1, and p-AKT in the rat adipocytes of pLVX-XBP1-RNAi were significantly lower than those in pLVX-NC2 at 4, 8, 12, and 24 h after P. gingivalis-LPS stimulation (P<0.05). CONCLUSIONS P. gingivalis-LPS regulates the insulin signaling pathway in adipocytes th-rough XBP1.
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Affiliation(s)
- Jiayi Lu
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People,s Hospital of Shunde), Shunde 528300, China
| | - Qianqi Wu
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People,s Hospital of Shunde), Shunde 528300, China
| | - Yiyan Chen
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People,s Hospital of Shunde), Shunde 528300, China
| | - Leilei Ye
- Dept. of Periodontology, Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
| | - Yuan Su
- Stomatology Center, Shunde Hospital, Southern Medical University (The First People,s Hospital of Shunde), Shunde 528300, China
- Dept. of Periodontology, Stomatological Hospital, Southern Medical University, Guangzhou 510280, China
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Zhao Y, Jiang Q, Zhang X, Zhu X, Dong X, Shen L, Zhang S, Niu L, Chen L, Zhang M, Jiang J, Chen D, Zhu L. l-Arginine Alleviates LPS-Induced Oxidative Stress and Apoptosis via Activating SIRT1-AKT-Nrf2 and SIRT1-FOXO3a Signaling Pathways in C2C12 Myotube Cells. Antioxidants (Basel) 2021; 10:antiox10121957. [PMID: 34943060 PMCID: PMC8750292 DOI: 10.3390/antiox10121957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 12/27/2022] Open
Abstract
l-arginine (l-Arg) has been reported to possess a wide range of functions, including anti-inflammatory, anti-oxidative, and anti-apoptosis. However, the role of l-Arg in LPS-induced muscle injury and its potential protective mechanism has not been well elucidated. This study aimed to investigate the effects of l-Arg on the LPS-induced oxidative stress and apoptosis in differentiated C2C12 myotube cells. Our results demonstrated that myotube cells treated with 0.2 mg/mL LPS significantly decreased cell viability. l-Arg treatment significantly suppressed LPS induced ROS accumulation and cell apoptosis. Furthermore, l-Arg improved antioxidant-related enzymes’ activities; increased antioxidant ability via Akt-Nrf2 signaling pathway; maintained the mitochondrial membrane potential (MMP); and enhanced FOXO3a expression, leading to a decrease in the mitochondrial-associated apoptotic proteins. In addition, l-Arg exposure dramatically increased the mRNA and protein expressions of SIRT1. The cytoprotective effect of l-Arg was restricted by the SIRT1 inhibitor EX527, which led to an increase in ROS level, apoptosis rate, and decreased cell MMP. The results also demonstrated that EX527 treatment significantly eliminated the effect of l-Arg on LPS-induced oxidative damage and mitochondria-mediated cell apoptosis. Our findings revealed that l-Arg could be used as a potential nutraceutical in reducing muscle injury via regulating SIRT1-Akt-Nrf2 and SIRT1-FOXO3a-mitochondria apoptosis signaling pathways.
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Affiliation(s)
- Ye Zhao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Qin Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xuefei Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xiaoxiao Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Xia Dong
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Linyuan Shen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Shunhua Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Lili Niu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Lei Chen
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Ming Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Jun Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Ya’an 625014, China
- Correspondence: (D.C.); (L.Z.)
| | - Li Zhu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (Q.J.); (X.Z.); (X.Z.); (X.D.); (L.S.); (S.Z.); (L.N.); (L.C.); (M.Z.); (J.J.)
- Correspondence: (D.C.); (L.Z.)
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Ridlo MR, Kim EH, Taweechaipaisankul A, Lee BC, Kim GA. Adiponectin Improves In Vitro Development of Cloned Porcine Embryos by Reducing Endoplasmic Reticulum Stress and Apoptosis. Animals (Basel) 2021; 11:ani11020473. [PMID: 33579003 PMCID: PMC7916767 DOI: 10.3390/ani11020473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/31/2021] [Accepted: 02/06/2021] [Indexed: 01/12/2023] Open
Abstract
Simple Summary Successful attenuation of endoplasmic reticulum (ER) stress signaling has a beneficial outcome in in vitro embryonal improvement. We evaluated the effect of adiponectin during in vitro culture in porcine embryos derived from parthenogenetic activation and somatic cell nuclear transfer (SCNT). We found that 15 and 30 μg/mL adiponectin treatment significantly improved cleavage rates, blastocyst formation rates, and total cell number (TCN) of blastocysts derived from parthenogenetic activation and reduced the expression levels of XBP1. In SCNT embryos, the cleavage rate, blastocyst formation rate, and TCN of blastocysts were significantly improved by 15 μg/mL adiponectin treatment compared to the control. In addition, the 15 μg/mL adiponectin treatment reduced the levels of XBP1 expression and ER stress-related genes, increased expression levels of pluripotency-related genes, and decreased apoptosis-related gene expression. Comprehensively, treatment with 15 μg/mL adiponectin enhanced the in vitro developmental capacity of early-stage SCNT porcine embryos by reducing ER stress and apoptosis. Abstract The main factor of embryonic demise is endoplasmic reticulum (ER) stress. Successful attenuation of ER stress results in an improvement in embryo development. We studied the impact of adiponectin in the in vitro culture (IVC) of porcine embryos derived from parthenogenetic activation and somatic cell nuclear transfer (SCNT). The first experiment revealed that 15 and 30 μg/mL adiponectin treatments improved cleavage, blastocyst rates, and total cell number (TCN) of parthenogenetic embryos and reduced the expression of XBP1 compared to the 5 μg/mL adiponectin treatment and control groups (p < 0.05). The second experiment showed that cleavage rate, blastocyst formation rate, and TCN of blastocysts were improved in the 15 μg/mL adiponectin treatment group compared with the control group, with significantly reduced XBP1 expression in ≥4-cell stage SCNT embryos and blastocysts (p < 0.05). Treatment with 15 μg/mL adiponectin significantly improved the expression of XBP1 and reduced the expression of ER stress-related genes (uXBP1, sXBP1, PTPN1, and ATF4), increased the expression levels of pluripotency-related genes (Nanog and SOX2), and decreased apoptosis-related gene expression (Caspase-3). These results suggest that 15 μg/mL adiponectin enhanced the in vitro developmental capacity of early-stage SCNT porcine embryos by reducing ER stress and apoptosis.
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Affiliation(s)
- Muhammad Rosyid Ridlo
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
- Department of Bioresources Technology and Veterinary, Vocational College, Universitas Gadjah Mada, Yogyakarta 5281, Indonesia
| | - Eui Hyun Kim
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Anukul Taweechaipaisankul
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea; (M.R.R.); (E.H.K.); (A.T.); (B.C.L.)
| | - Geon A. Kim
- Department of Biomedical Laboratory Science, School of Medicine, Eulji University, Daejon 34824, Korea
- Correspondence:
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