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Naka S, Matsuoka D, Misaki T, Nagasawa Y, Ito S, Nomura R, Nakano K, Matsumoto-Nakano M. Contribution of collagen-binding protein Cnm of Streptococcus mutans to induced IgA nephropathy-like nephritis in rats. Commun Biol 2024; 7:1141. [PMID: 39277690 PMCID: PMC11401903 DOI: 10.1038/s42003-024-06826-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 09/03/2024] [Indexed: 09/17/2024] Open
Abstract
IgA nephropathy (IgAN), the most common primary glomerulonephritis, is considered an intractable disease with unknown pathogenic factors. In our previous study, Streptococcus mutans, the major causative bacteria of dental caries, which expresses Cnm, was related to the induction of IgAN-like nephritis. In the present study, the Cnm-positive S. mutans parental strain, a Cnm-defective isogenic mutant strain, its complementation strain, and recombinant Cnm (rCnm) protein were administered intravenously to Sprague Dawley rats, and the condition of their kidneys was evaluated focusing on the pathogenicity of Cnm. Rats treated with parental and complement bacterial strains and rCnm protein developed IgAN-like nephritis with mesangial proliferation and IgA and C3 mesangial deposition. Scanning immunoelectron microscopy revealed that rCnm was present in the electron-dense deposition area of the mesangial region in the rCnm protein group. These results demonstrated that the Cnm protein itself is an important factor in the induction of IgAN in rats.
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Affiliation(s)
- Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Daiki Matsuoka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka, Japan
| | - Yasuyuki Nagasawa
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Seigo Ito
- Department of Internal Medicine, Japan Self-Defense Force Iruma Hospital, Saitama, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Graduate School of Dentistry, The University of Osaka, Suita, Osaka, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan.
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Takahara M, Doi A, Inoshita A, Ohori J, Kono M, Hirano A, Kakuki T, Yamada K, Akagi H, Takano K, Nakata S, Harabuchi Y. Guidance of clinical management for patients with tonsillar focal disease. Auris Nasus Larynx 2024; 51:761-773. [PMID: 38875993 DOI: 10.1016/j.anl.2024.05.010] [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: 03/30/2024] [Revised: 05/13/2024] [Accepted: 05/20/2024] [Indexed: 06/16/2024]
Abstract
Tonsillar focal diseases (TFDs) are defined as "diseases caused by organic and/or functional damage in organs distant from tonsil, and the disease outcome is improved by tonsillectomy." Although several reports and reviews have shown the efficacy of tonsillectomy for TFDs, no guidelines for the clinical management of the diagnosis and treatment of TFDs have been reported. Therefore, the Society of Stomato-pharyngology established a committee to guide the clinical management of patients with TFDs, and the original guide was published in May 2023. This article summarizes the English version of the manuscript. We hope that the concept of TFDs will spread worldwide, and that one as many patients with TFDs will benefit from tonsillectomy.
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Affiliation(s)
- Miki Takahara
- Department of Otolaryngology-Head and Neck Surgery, Asahikawa Medical University, Midorigaoka higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.
| | - Akira Doi
- Division of Otolaryngology, Kochi Health Sciences Center
| | - Ayako Inoshita
- Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Junichiro Ohori
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - Masamitsu Kono
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, 911-1 Kimiidera, Wakayama-shi, 641-8509, Japan
| | - Ai Hirano
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Takuya Kakuki
- Department of Otolaryngology-Head and Neck Surgery, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Kentaro Yamada
- Department of Otorhinolaryngology, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Kahoku, Ishikawa, 920-0293, Japan
| | | | - Kenichi Takano
- Department of Otolaryngology-Head and Neck Surgery, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Seiichi Nakata
- Department of Otorhinolaryngology, Fujita Health University Bantane Hospital, 3-6-10 Otohashi, Nakagawa-ku, Nagoya, Aichi, 454-8509, Japan
| | - Yasuaki Harabuchi
- Department of Otolaryngology-Head and Neck Surgery, Asahikawa Medical University, Midorigaoka higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
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Wang A, Zhai Z, Ding Y, Wei J, Wei Z, Cao H. The oral-gut microbiome axis in inflammatory bowel disease: from inside to insight. Front Immunol 2024; 15:1430001. [PMID: 39131163 PMCID: PMC11310172 DOI: 10.3389/fimmu.2024.1430001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 07/09/2024] [Indexed: 08/13/2024] Open
Abstract
Inflammatory bowel disease (IBD) is an idiopathic and persistent inflammatory illness of the bowels, leading to a substantial burden on both society and patients due to its high incidence and recurrence. The pathogenesis of IBD is multifaceted, partly attributed to the imbalance of immune responses toward the gut microbiota. There is a correlation between the severity of the disease and the imbalance in the oral microbiota, which has been discovered in recent research highlighting the role of oral microbes in the development of IBD. In addition, various oral conditions, such as angular cheilitis and periodontitis, are common extraintestinal manifestations (EIMs) of IBD and are associated with the severity of colonic inflammation. However, it is still unclear exactly how the oral microbiota contributes to the pathogenesis of IBD. This review sheds light on the probable causal involvement of oral microbiota in intestinal inflammation by providing an overview of the evidence, developments, and future directions regarding the relationship between oral microbiota and IBD. Changes in the oral microbiota can serve as markers for IBD, aiding in early diagnosis and predicting disease progression. Promising advances in probiotic-mediated oral microbiome modification and antibiotic-targeted eradication of specific oral pathogens hold potential to prevent IBD recurrence.
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Affiliation(s)
- Aili Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
- Department of Gastroenterology and Hepatology, Binzhou Medical University Hospital, Binzhou Medical University, Binzhou, Shandong, China
| | - Zihan Zhai
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
- Department of Gastroenterology and Hepatology, Binzhou Medical University Hospital, Binzhou Medical University, Binzhou, Shandong, China
| | - Yiyun Ding
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Jingge Wei
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - Zhiqiang Wei
- Department of Orthodontics, Tianjin Stomatological Hospital School of Medicine, Nankai University, Tianjin, China
- Tianjin Key laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, China
| | - Hailong Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
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Ito S, Misaki T, Nagasawa Y, Nomura R, Naka S, Fukunaga A, Matsuoka D, Matayoshi S, Matsumoto-Nakano M, Nakano K. Porphyromonas gingivalis infection in the oral cavity is associated with elevated galactose-deficient IgA1 and increased nephritis severity in IgA nephropathy. Clin Exp Nephrol 2024; 28:192-200. [PMID: 37806974 DOI: 10.1007/s10157-023-02411-4] [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: 05/03/2023] [Accepted: 09/18/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND The relationship between the major periodontal bacteria, Porphyromonas gingivalis, and the pathogenesis of IgA nephropathy (IgAN)-particularly with respect to galactose-deficient IgA1 (Gd-IgA1)-has not been fully elucidated. METHODS Saliva samples from 30 IgAN patients and 44 patients with chronic kidney disease (CKD) were subjected to analysis of P. gingivalis status via polymerase chain reaction using a set of P. gingivalis-specific primers. The associations between P. gingivalis presence and clinical parameters, including plasma Gd-IgA1, were analyzed in each group. RESULTS Compared with the CKD group, the IgAN group demonstrated significantly higher plasma Gd-IgA1 levels (p < 0.05). Compared with the P. gingivalis-negative subgroup, the P. gingivalis-positive subgroup exhibited significantly higher plasma Gd-IgA1 levels in both IgAN and CKD patients (p < 0.05). Additionally, among IgAN patients, the P. gingivalis-positive subgroup displayed significantly higher plasma Gd-IgA1 and urine protein levels, compared with the P. gingivalis-negative subgroup (p < 0.05). With respect to renal biopsy findings, the frequencies of segmental glomerulosclerosis and tubular atrophy/interstitial fibrosis were significantly greater in the P. gingivalis-positive subgroup than in the P. gingivalis-negative subgroup, according to the Oxford classification of IgAN (p < 0.05). CONCLUSION Our findings suggest an association between the presence of P. gingivalis in the oral cavity and the pathogenesis of IgAN, mediated by increased levels of Gd-IgA1.
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Affiliation(s)
- Seigo Ito
- Department of Internal Medicine, Japan Self-Defense Force Iruma Hospital, Iruma, Saitama, Japan
| | - Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan.
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka, Japan.
| | - Yasuyuki Nagasawa
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Akiko Fukunaga
- Division of Dentistry, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
| | - Daiki Matsuoka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Saaya Matayoshi
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Cai F, Zhou C, Jiao N, Liang X, Ye Z, Chen W, Yang Q, Peng H, Tang Y, Niu C, Zhao G, Wang Z, Zhang G, Yu X. Systematic Microbiome Dysbiosis Is Associated with IgA Nephropathy. Microbiol Spectr 2023; 11:e0520222. [PMID: 37227280 PMCID: PMC10269816 DOI: 10.1128/spectrum.05202-22] [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: 12/18/2022] [Accepted: 05/04/2023] [Indexed: 05/26/2023] Open
Abstract
IgA nephropathy (IgAN) is reportedly associated with microbial dysbiosis. However, the microbiome dysregulation of IgAN patients across multiple niches remains unclear. To gain a systematic understanding of microbial dysbiosis, we conducted large-scale 16S rRNA gene sequencing in IgAN patients and healthy volunteers across 1,732 oral, pharynx, gut, and urine samples. We observed a niche-specific increase of several opportunistic pathogens, including Bergeyella and Capnocytophaga in the oral and pharynx, whereas some beneficial commensals decreased in IgAN patients. Similar alterations were also observed in the early versus advanced stage of chronic kidney disease (CKD) progression. Moreover, Bergeyella, Capnocytophaga, and Comamonas in the oral and pharynx were positively associated with creatinine and urea, indicating renal lesions. Random forest classifiers were developed by using the microbial abundance to predict IgAN, achieving an optimal accuracy of 0.879 in the discovery phase and 0.780 in the validation phase. IMPORTANCE This study provides microbial profiles of IgAN across multiple niches and underlines the potential of these biomarkers as promising, noninvasive tools with which to differentiate IgAN patients for clinical applications.
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Affiliation(s)
- Fengtao Cai
- School of Medicine, South China University of Technology, Guangzhou, China
- Department of Nephrology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Chenfen Zhou
- National Genomics Data Center & Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Na Jiao
- National Clinical Research Center for Child Health, the Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xinling Liang
- Department of Nephrology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Zhiming Ye
- Department of Nephrology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Qiongqiong Yang
- Department of Nephrology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hui Peng
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ying Tang
- Department of Nephrology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Chaoqun Niu
- National Genomics Data Center & Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Guoping Zhao
- National Genomics Data Center & Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Zefeng Wang
- National Genomics Data Center & Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
- CAS Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai, China
| | - Guoqing Zhang
- National Genomics Data Center & Bio-Med Big Data Center, CAS Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xueqing Yu
- School of Medicine, South China University of Technology, Guangzhou, China
- Department of Nephrology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangzhou, China
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Hajishengallis G. Illuminating the oral microbiome and its host interactions: animal models of disease. FEMS Microbiol Rev 2023; 47:fuad018. [PMID: 37113021 PMCID: PMC10198557 DOI: 10.1093/femsre/fuad018] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 04/29/2023] Open
Abstract
Periodontitis and caries are driven by complex interactions between the oral microbiome and host factors, i.e. inflammation and dietary sugars, respectively. Animal models have been instrumental in our mechanistic understanding of these oral diseases, although no single model can faithfully reproduce all aspects of a given human disease. This review discusses evidence that the utility of an animal model lies in its capacity to address a specific hypothesis and, therefore, different aspects of a disease can be investigated using distinct and complementary models. As in vitro systems cannot replicate the complexity of in vivo host-microbe interactions and human research is typically correlative, model organisms-their limitations notwithstanding-remain essential in proving causality, identifying therapeutic targets, and evaluating the safety and efficacy of novel treatments. To achieve broader and deeper insights into oral disease pathogenesis, animal model-derived findings can be synthesized with data from in vitro and clinical research. In the absence of better mechanistic alternatives, dismissal of animal models on fidelity issues would impede further progress to understand and treat oral disease.
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Affiliation(s)
- George Hajishengallis
- Department of Basic and Translational Sciences, Laboratory of Innate Immunity and Inflammation, School of Dental Medicine, University of Pennsylvania, 240 S. 40th Street, Philadelphia, PA 19104-6030, USA
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Huang X, Huang X, Huang Y, Zheng J, Lu Y, Mai Z, Zhao X, Cui L, Huang S. The oral microbiome in autoimmune diseases: friend or foe? J Transl Med 2023; 21:211. [PMID: 36949458 PMCID: PMC10031900 DOI: 10.1186/s12967-023-03995-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/15/2023] [Indexed: 03/24/2023] Open
Abstract
The human body is colonized by abundant and diverse microorganisms, collectively known as the microbiome. The oral cavity has more than 700 species of bacteria and consists of unique microbiome niches on mucosal surfaces, on tooth hard tissue, and in saliva. The homeostatic balance between the oral microbiota and the immune system plays an indispensable role in maintaining the well-being and health status of the human host. Growing evidence has demonstrated that oral microbiota dysbiosis is actively involved in regulating the initiation and progression of an array of autoimmune diseases.Oral microbiota dysbiosis is driven by multiple factors, such as host genetic factors, dietary habits, stress, smoking, administration of antibiotics, tissue injury and infection. The dysregulation in the oral microbiome plays a crucial role in triggering and promoting autoimmune diseases via several mechanisms, including microbial translocation, molecular mimicry, autoantigen overproduction, and amplification of autoimmune responses by cytokines. Good oral hygiene behaviors, low carbohydrate diets, healthy lifestyles, usage of prebiotics, probiotics or synbiotics, oral microbiota transplantation and nanomedicine-based therapeutics are promising avenues for maintaining a balanced oral microbiome and treating oral microbiota-mediated autoimmune diseases. Thus, a comprehensive understanding of the relationship between oral microbiota dysbiosis and autoimmune diseases is critical for providing novel insights into the development of oral microbiota-based therapeutic approaches for combating these refractory diseases.
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Affiliation(s)
- Xiaoyan Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Xiangyu Huang
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Yi Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China
| | - Jiarong Zheng
- Department of Dentistry, The First Affiliated Hospital, Sun Yat-Sen University, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Ye Lu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, Guangzhou, 510280, China
| | - Zizhao Mai
- Department of Dentistry, The First Affiliated Hospital, Sun Yat-Sen University, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Xinyuan Zhao
- Department of Endodontics, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China.
| | - Li Cui
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, Guangzhou, 510280, China.
- Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles, CA, 90095, USA.
| | - Shaohong Huang
- Department of Preventive Dentistry, Stomatological Hospital, School of Stomatology, Southern Medical University, Haizhu District, No.366 Jiangnan Da Dao Nan, Guangzhou, 510280, China.
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Misaki T, Naka S, Suzuki H, Lee M, Aoki R, Nagasawa Y, Matsuoka D, Ito S, Nomura R, Matsumoto-Nakano M, Suzuki Y, Nakano K. cnm-positive Streptococcus mutans is associated with galactose-deficient IgA in patients with IgA nephropathy. PLoS One 2023; 18:e0282367. [PMID: 36862654 PMCID: PMC9980772 DOI: 10.1371/journal.pone.0282367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 02/13/2023] [Indexed: 03/03/2023] Open
Abstract
The presence of Streptococcus mutans expressing Cnm protein encoded by cnm (cnm-positive S. mutans) in the oral cavity is associated with immunoglobulin A (IgA) nephropathy (IgAN). However, the precise mechanism by which cnm-positive S. mutans is involved in the pathogenesis of IgAN remains unclear. The present study evaluated glomerular galactose-deficient IgA1 (Gd-IgA1) to clarify the association between the presence of cnm-positive S. mutans and glomerular Gd-IgA1 in patients with IgAN. The presence of S. mutans and cnm-positive S. mutans was evaluated by polymerase chain reaction in saliva specimens from 74 patients with IgAN or IgA vasculitis. Immunofluorescent staining of IgA and Gd-IgA1 using KM55 antibody in clinical glomerular tissues was then performed. There was no significant association between the glomerular staining intensity of IgA and the positive rate of S. mutans. However, there was a significant association between the glomerular staining intensity of IgA and the positive rate of cnm-positive S. mutans (P < 0.05). There was also a significant association between the glomerular staining intensity of Gd-IgA1 (KM55) and the positive rate of cnm-positive S. mutans (P < 0.05). The glomerular staining intensity of Gd-IgA1 (KM55) was not associated with the positive rate of S. mutans. These results suggest that cnm-positive S. mutans in the oral cavity is associated with the pathogenesis of Gd-IgA1 in patients with IgAN.
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Affiliation(s)
- Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka, Japan
- * E-mail:
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Hitoshi Suzuki
- Department of Nephrology, Juntendo University Faculty of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Mingfeng Lee
- Department of Nephrology, Juntendo University Faculty of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Ryosuke Aoki
- Department of Nephrology, Juntendo University Faculty of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Yasuyuki Nagasawa
- Department of General Internal Medicine, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Daiki Matsuoka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Seigo Ito
- Department of Internal Medicine, Japan Self-Defense Iruma Hospital, Iruma, Saitama, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Division of Oral Infection and Disease Control, Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Okayama, Japan
| | - Yusuke Suzuki
- Department of Nephrology, Juntendo University Faculty of Medicine, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Kazuhiko Nakano
- Division of Oral Infection and Disease Control, Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Du Y, Cheng T, Liu C, Zhu T, Guo C, Li S, Rao X, Li J. IgA Nephropathy: Current Understanding and Perspectives on Pathogenesis and Targeted Treatment. Diagnostics (Basel) 2023; 13:diagnostics13020303. [PMID: 36673113 PMCID: PMC9857562 DOI: 10.3390/diagnostics13020303] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/19/2023] Open
Abstract
Immunoglobulin A nephropathy (IgAN) is the most common primary glomerulonephritis worldwide, with varied clinical and histopathological features between individuals, particularly across races. As an autoimmune disease, IgAN arises from consequences of increased circulating levels of galactose-deficient IgA1 and mesangial deposition of IgA-containing immune complexes, which are recognized as key events in the widely accepted "multi-hit" pathogenesis of IgAN. The emerging evidence further provides insights into the role of genes, environment, mucosal immunity and complement system. These developments are paralleled by the increasing availability of diagnostic tools, potential biomarkers and therapeutic agents. In this review, we summarize current evidence and outline novel findings in the prognosis, clinical trials and translational research from the updated perspectives of IgAN pathogenesis.
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刘 子, 周 学, 张 凌. [Research Progress in the Correlation Between Oral Microbiota and Chronic Kidney Disease]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:66-70. [PMID: 36647645 PMCID: PMC10409043 DOI: 10.12182/20230160202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Indexed: 01/18/2023]
Abstract
Chronic kidney disease (CKD), one of the common clinical urological diseases, is increasingly more prevalent in recent years and has emerged as a major concern of public health around the globe. The continuous recurrence of CKD caused by renal function impairment leads eventually to irreversible renal failure and severe systemic complications, which causes severe negative impact on the quality of life of the patient. As an essential component of human microbiome, oral microbiota plays a major role in maintaining health, and there has been research suggesting close association between oral dysbiosis and CKD. It is therefore of great clinical significance to understand the correlation between CKD and oral microbiota. Herein, we reviewed the characteristics of oral microbiota of CKD patients, the possible mechanisms of oral microbiota's involvement in the pathogenesis and development of CKD, and the latest research findings on oral dysbiosis and CKD, with a view to finding new approaches to early prevention and control of CKD through oral microbial targets.
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Affiliation(s)
- 子晗 刘
- 口腔疾病研究国家重点实验室 国家口腔疾病临床医学研究中心 四川大学华西口腔医院 牙体牙髓病科 (成都 610041)State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Dental and Endodontic Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - 学东 周
- 口腔疾病研究国家重点实验室 国家口腔疾病临床医学研究中心 四川大学华西口腔医院 牙体牙髓病科 (成都 610041)State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Dental and Endodontic Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - 凌琳 张
- 口腔疾病研究国家重点实验室 国家口腔疾病临床医学研究中心 四川大学华西口腔医院 牙体牙髓病科 (成都 610041)State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Dental and Endodontic Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Otsugu M, Mikasa Y, Kitamura T, Suehiro Y, Matayoshi S, Nomura R, Nakano K. Clinical characteristics of children and guardians possessing CBP-positive Streptococcus mutans strains: a cross-sectional study. Sci Rep 2022; 12:17510. [PMID: 36266432 PMCID: PMC9585102 DOI: 10.1038/s41598-022-22378-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/13/2022] [Indexed: 01/12/2023] Open
Abstract
Streptococcus mutans is a major etiological agent for dental caries. We previously demonstrated that S. mutans strains expressing collagen-binding proteins (CBPs) were related to the pathogenesis of systemic diseases. However, their acquisition and colonization remain unknown. Here, we investigated the detection rates of CBP-positive S. mutans strains in children and their guardians to clarify the background for the acquisition and colonization in children. Saliva samples were collected from children and their mothers, and detection of S. mutans and collagen-binding genes (cnm, cbm) was performed by PCR after DNA extraction. The oral status of each child was examined, and their mothers were asked to complete a questionnaire. The isolation rate of Cnm-positive S. mutans was significantly higher in mothers than in children. Notably, the possession rates of CBP-positive strains in children were significantly higher in children whose mothers had CBP-positive strains than in children whose mothers did not have these strains. Furthermore, children with CBP-positive strains had a significantly shorter breastfeeding period than children without these strains. The present results suggest that nutritional feeding habits in infancy are one of the factors involved in the acquisition and colonization of CBP-positive S. mutans strains.
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Affiliation(s)
- Masatoshi Otsugu
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
| | - Yusuke Mikasa
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
| | - Takahiro Kitamura
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
| | - Yuto Suehiro
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
| | - Saaya Matayoshi
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
| | - Ryota Nomura
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan ,grid.257022.00000 0000 8711 3200Department of Pediatric Dentistry, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Kazuhiko Nakano
- grid.136593.b0000 0004 0373 3971Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871 Japan
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12
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Misaki T, Naka S, Nagasawa Y, Matsuoka D, Ito S, Nomura R, Matsumoto-Nakano M, Nakano K. Simultaneous Presence of Campylobacter rectus and Cnm-Positive Streptococcus mutans in the Oral Cavity Is Associated with Renal Dysfunction in IgA Nephropathy Patients: 5-Year Follow-Up Analysis. Nephron Clin Pract 2022; 147:134-143. [PMID: 35998579 DOI: 10.1159/000525511] [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: 02/08/2022] [Accepted: 06/03/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The simultaneous presence of Streptococcus mutans expressing the Cnm protein encoded by cnm (i.e., cnm-positive S. mutans) and Campylobacter rectus in the oral cavity has been associated with proteinuria in patients with IgA nephropathy (IgAN). OBJECTIVES The present study evaluated the relationship between renal function and oral bacteria in patients with IgAN over 5 years of follow-up. METHODS The presence of C. rectus and cnm-positive S. mutans in saliva samples of 117 patients with IgAN was initially evaluated by polymerase chain reaction. Patients were then divided into four groups according to the results of C. rectus and cnm-positive S. mutans detection: group A: C. rectus (-), cnm-positive S. mutans (-); group B: C. rectus (+), cnm-positive S. mutans (-); group C: C. rectus (-), cnm-positive S. mutans (+); and group D: C. rectus (+), cnm-positive S. mutans (+). Clinical characteristics were prospectively followed for 5 years. RESULTS Serum creatinine levels were significantly higher in group D than in group A over 5 years of follow-up. Additionally, the proportion of patients with an estimated glomerular filtration rate <45 mL/min increased over time; it was significantly greater in group D than in group A over 5 years of follow-up. CONCLUSION These results suggest that the simultaneous presence of C. rectus and cnm-positive S. mutans in the oral cavity is associated with renal dysfunction in IgAN patients.
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Affiliation(s)
- Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.,Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu, Japan
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yasuyuki Nagasawa
- Division of Kidney and Dialysis, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Daiki Matsuoka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Seigo Ito
- Department of Internal Medicine, Japan Self-Defense Iruma Hospital, Iruma, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan.,Division of Oral Infection and Disease Control, Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Division of Oral Infection and Disease Control, Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
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13
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Hosoki S, Hattori Y, Saito S, Takegami M, Tonomura S, Yamamoto Y, Ikeda S, Hosomi N, Oishi N, Morita Y, Miyamoto Y, Nomura R, Nakano K, Ihara M. Risk Assessment of Cnm-Positive Streptococcus mutans in Stroke Survivors (RAMESSES): Protocol for a Multicenter Prospective Cohort Study. Front Neurol 2022; 13:816147. [PMID: 35645961 PMCID: PMC9133813 DOI: 10.3389/fneur.2022.816147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction The role of commensal microbiota in systemic diseases, including brain diseases, has attracted increasing attention. Oral infectious diseases, such as dental caries and periodontitis, are also involved in cerebrovascular diseases and cognitive impairment. Cerebral microbleeds (CMBs) and intracerebral hemorrhage due to small vessel disease (SVD), are presumably associated with a high risk of vascular cognitive impairment and stroke. We previously reported that Streptococcus mutans (S. mutans, the main pathogen of dental caries), harboring the cnm gene that encodes the collagen-binding protein Cnm, is associated with the development of hypertensive intracerebral hemorrhage and aggravation of CMBs. We also proposed a mechanism by which the circulating Cnm-expressing S. mutans causes intracerebral hemorrhage or CMBs; it binds to denuded basement membranes mainly composed of collagen IV through damaged tight junctions or it directly invades endothelial cells, resulting in blood-brain barrier injury. In November 2018, we initiated a multicenter, prospective cohort study (RAMESSES: Risk Assessment of Cnm-positive S. mutans in Stroke Survivors; UMIN Clinical Trials Registry: UMIN000045559) to explore the longitudinal association between Cnm-positive S. mutans and CMBs with comprehensive dental findings, which should determine the effect of Cnm-positive S. mutans in the oral cavity on the risk of CMB development and cognitive decline. Methods Fifteen domestic institutes will be enlisted to enroll 230 patients who have at least one CMB in the deep brain area and develop a stroke within the past year. The prevalence of Cnm-positive S. mutans based on oral specimens and dental hygiene will be examined. The primary outcome is the number of newly developed deep CMBs. The secondary outcomes include the new development of lobar, subtentorial, or any type of CMBs; symptomatic intracerebral hemorrhage or ischemic stroke; changes in cognitive function or frailty; major bleeding; all-cause mortality; and antibody titers against periodontal pathogens. The observation period will be 2 years. Discussion The 2-year longitudinal prospective cohort study is expected to establish the role of Cnm-positive S. mutans in SVD including CMBs and intracerebral hemorrhage from the perspective of the “brain-oral axis” and provide guidance for novel prophylactic strategies against Cnm-positive S. mutans-induced SVD.
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Affiliation(s)
- Satoshi Hosoki
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yorito Hattori
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
- *Correspondence: Yorito Hattori
| | - Satoshi Saito
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Misa Takegami
- Department of Preventive Medicine and Epidemiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shuichi Tonomura
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yumi Yamamoto
- Department of Molecular Innovation in Lipidemiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shuhei Ikeda
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Naohisa Hosomi
- Department of Neurology, Chikamori Hospital, Kochi, Japan
- Department of Disease Model, Research Institute of Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Naoya Oishi
- Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoshiaki Morita
- Department of Radiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yoshihiro Miyamoto
- Department of Medical and Health Information Management, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
- Masafumi Ihara
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14
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Oral microbiota in human systematic diseases. Int J Oral Sci 2022; 14:14. [PMID: 35236828 PMCID: PMC8891310 DOI: 10.1038/s41368-022-00163-7] [Citation(s) in RCA: 186] [Impact Index Per Article: 93.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/06/2022] [Accepted: 01/09/2022] [Indexed: 02/07/2023] Open
Abstract
Oral bacteria directly affect the disease status of dental caries and periodontal diseases. The dynamic oral microbiota cooperates with the host to reflect the information and status of immunity and metabolism through two-way communication along the oral cavity and the systemic organs. The oral cavity is one of the most important interaction windows between the human body and the environment. The microenvironment at different sites in the oral cavity has different microbial compositions and is regulated by complex signaling, hosts, and external environmental factors. These processes may affect or reflect human health because certain health states seem to be related to the composition of oral bacteria, and the destruction of the microbial community is related to systemic diseases. In this review, we discussed emerging and exciting evidence of complex and important connections between the oral microbes and multiple human systemic diseases, and the possible contribution of the oral microorganisms to systemic diseases. This review aims to enhance the interest to oral microbes on the whole human body, and also improve clinician’s understanding of the role of oral microbes in systemic diseases. Microbial research in dentistry potentially enhances our knowledge of the pathogenic mechanisms of oral diseases, and at the same time, continuous advances in this frontier field may lead to a tangible impact on human health.
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15
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Lavine N, Ohayon A, Mahroum N. Renal autoimmunity: The role of bacterial and viral infections, an extensive review. Autoimmun Rev 2022; 21:103073. [PMID: 35245692 DOI: 10.1016/j.autrev.2022.103073] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 02/27/2022] [Indexed: 02/08/2023]
Abstract
Autoimmunity is a process by which the loss of self-tolerance results in an immune attack against the body own tissues and organs. For autoimmunity to occur, various elements serving as triggers were described by which infections are considered one of the leading factors. In turn, renal involvement in autoimmune diseases, whether by an organ-specific attack, or as part of a systemic disease process, is well known. As bacterial and viral infections are considered to be common triggers for autoimmunity in general, we aimed to study their association with renal autoimmunity in particular. We performed an extensive search of the recent and relevant medical literature regarding renal autoimmunity syndromes such as infection-associated glomerulonephritis and vasculitis, associated with bacterial and viral infections. By utilizing PubMed and Google Scholar search engines, over 200 articles and case reports were reviewed. Among other mechanisms, direct infection of the renal parenchyma, molecular mimicry, induction of B-cells or secretion of superantigens, bacterial and viral pathogens were found to correlate with the development of renal autoimmunity. Nevertheless, this was not true for all pathogens, as some mimic autoimmune diseases and others show a surprisingly protective effect. The exact immunopathogenesis is yet to be determined, however. For conclusion, bacterial and viral infections are linked to renal autoimmunity by both direct damage and as mediators of systemic diseases. Further research particularly on the immunopathogenetic mechanisms of renal autoimmunity associated with infections is required.
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Affiliation(s)
- Noy Lavine
- St. George School of Medicine, University of London, London, UK; Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel.
| | - Aviran Ohayon
- St. George School of Medicine, University of London, London, UK; Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel
| | - Naim Mahroum
- Zabludowicz Center for autoimmune diseases, Sheba Medical Center, Ramat-Gan, Israel; International School of Medicine, Istanbul Medipol University, Istanbul, Turkey
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16
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Nagasawa Y, Misaki T, Ito S, Naka S, Wato K, Nomura R, Matsumoto-Nakano M, Nakano K. Title IgA Nephropathy and Oral Bacterial Species Related to Dental Caries and Periodontitis. Int J Mol Sci 2022; 23:725. [PMID: 35054910 PMCID: PMC8775524 DOI: 10.3390/ijms23020725] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 12/23/2022] Open
Abstract
A relationship between IgA nephropathy (IgAN) and bacterial infection has been suspected. As IgAN is a chronic disease, bacteria that could cause chronic infection in oral areas might be pathogenetic bacteria candidates. Oral bacterial species related to dental caries and periodontitis should be candidates because these bacteria are well known to be pathogenic in chronic dental disease. Recently, several reports have indicated that collagen-binding protein (cnm)-(+) Streptococcs mutans is relate to the incidence of IgAN and the progression of IgAN. Among periodontal bacteria, Treponema denticola, Porphyromonas gingivalis and Campylobacte rectus were found to be related to the incidence of IgAN. These bacteria can cause IgAN-like histological findings in animal models. While the connection between oral bacterial infection, such as infection with S. mutans and periodontal bacteria, and the incidence of IgAN remains unclear, these bacterial infections might cause aberrantly glycosylated IgA1 in nasopharynx-associated lymphoid tissue, which has been reported to cause IgA deposition in mesangial areas in glomeruli, probably through the alteration of microRNAs related to the expression of glycosylation enzymes. The roles of other factors related to the incidence and progression of IgA, such as genes and cigarette smoking, can also be explained from the perspective of the relationship between these factors and oral bacteria. This review summarizes the relationship between IgAN and oral bacteria, such as cnm-(+) S. mutans and periodontal bacteria.
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Affiliation(s)
- Yasuyuki Nagasawa
- Department of General Internal Medicine, Hyogo College of Medicine, Nishinomiya 663-8501, Hyogo, Japan
| | - Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu 430-8558, Shizuoka, Japan;
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu 433-8558, Shizuoka, Japan
| | - Seigo Ito
- Department of Internal Medicine, Japan Self-Defense Gifu Hospital, Kakamigahara 502-0817, Gifu, Japan;
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Okayama, Japan; (S.N.); (M.M.-N.)
| | - Kaoruko Wato
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (R.N.); (K.N.)
| | - Ryota Nomura
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (R.N.); (K.N.)
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Okayama, Japan; (S.N.); (M.M.-N.)
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (R.N.); (K.N.)
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17
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Nagasawa Y, Nomura R, Misaki T, Ito S, Naka S, Wato K, Okunaka M, Watabe M, Fushimi K, Tsuzuki K, Matsumoto-Nakano M, Nakano K. Relationship between IgA Nephropathy and Porphyromonas gingivalis; Red Complex of Periodontopathic Bacterial Species. Int J Mol Sci 2021; 22:13022. [PMID: 34884826 PMCID: PMC8657970 DOI: 10.3390/ijms222313022] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/22/2021] [Accepted: 11/27/2021] [Indexed: 12/30/2022] Open
Abstract
IgA nephropathy (IgAN) has been considered to have a relationship with infection in the tonsil, because IgAN patients often manifest macro hematuria just after tonsillitis. In terms of oral-area infection, the red complex of periodontal bacteria (Porphyromonas gingivalis (P. gingivalis), Treponema denticol (T. denticola) and Tannerella forsythia (T. forsythia)) is important, but the relationship between these bacteria and IgAN remains unknown. In this study, the prevalence of the red complex of periodontal bacteria in tonsil was compared between IgAN and tonsillitis patients. The pathogenicity of IgAN induced by P. gingivalis was confirmed by the mice model treated with this bacterium. The prevalence of P. gingivalis and T. forsythia in IgAN patients was significantly higher than that in tonsillitis patients (p < 0.001 and p < 0.05, respectively). A total of 92% of tonsillitis patients were free from red complex bacteria, while only 48% of IgAN patients had any of these bacteria. Nasal administration of P. gingivalis in mice caused mesangial proliferation (p < 0.05 at days 28a nd 42; p < 0.01 at days 14 and 56) and IgA deposition (p < 0.001 at day 42 and 56 after administration). Scanning-electron-microscopic observation revealed that a high-density Electron-Dense Deposit was widely distributed in the mesangial region in the mice kidneys treated with P. gingivalis. These findings suggest that P. gingivalis is involved in the pathogenesis of IgAN.
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Affiliation(s)
- Yasuyuki Nagasawa
- Department of Internal Medicine, Division of Kidney and Dialysis, Hyogo College of Medicine, Nishinomiya 663-8501, Hyogo, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (K.N.)
| | - Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Shizuoka 430-8558, Hamamatsu, Japan;
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Shizuoka 433-8558, Hamamatsu, Japan
| | - Seigo Ito
- Department of Internal medicine, Japan Self-Defense Gifu Hospital, Gifu 502-0817, Kakamigahara, Japan;
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Okayama, Japan; (S.N.); (M.M.-N.)
| | - Kaoruko Wato
- Department of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (K.N.)
| | - Mieko Okunaka
- Department of Otolaryngology, Meiwa Hospital, Nishinomiya 663-8186, Hyogo, Japan; (M.O.); (M.W.); (K.F.)
| | - Maiko Watabe
- Department of Otolaryngology, Meiwa Hospital, Nishinomiya 663-8186, Hyogo, Japan; (M.O.); (M.W.); (K.F.)
| | - Katsuya Fushimi
- Department of Otolaryngology, Meiwa Hospital, Nishinomiya 663-8186, Hyogo, Japan; (M.O.); (M.W.); (K.F.)
- Department of Otorhinolaryngology, Head and Neck Surgery, Hyogo College of Medicine, Nishinomiya 663-8501, Hyogo, Japan;
| | - Kenzo Tsuzuki
- Department of Otorhinolaryngology, Head and Neck Surgery, Hyogo College of Medicine, Nishinomiya 663-8501, Hyogo, Japan;
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Okayama, Japan; (S.N.); (M.M.-N.)
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Division of Oral infection and Disease Control, Osaka University Graduate School of Dentistry, Suita 565-0871, Osaka, Japan; (K.W.); (K.N.)
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Pathogenesis of IgA Nephropathy: Current Understanding and Implications for Development of Disease-Specific Treatment. J Clin Med 2021; 10:jcm10194501. [PMID: 34640530 PMCID: PMC8509647 DOI: 10.3390/jcm10194501] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 09/22/2021] [Indexed: 12/20/2022] Open
Abstract
IgA nephropathy, initially described in 1968 as a kidney disease with glomerular “intercapillary deposits of IgA-IgG”, has no disease-specific treatment and is a common cause of kidney failure. Clinical observations and laboratory analyses suggest that IgA nephropathy is an autoimmune disease wherein the kidneys are damaged as innocent bystanders due to deposition of IgA1-IgG immune complexes from the circulation. A multi-hit hypothesis for the pathogenesis of IgA nephropathy describes four sequential steps in disease development. Specifically, patients with IgA nephropathy have elevated circulating levels of IgA1 with some O-glycans deficient in galactose (galactose-deficient IgA1) and these IgA1 glycoforms are recognized as autoantigens by unique IgG autoantibodies, resulting in formation of circulating immune complexes, some of which deposit in glomeruli and activate mesangial cells to induce kidney injury. This proposed mechanism is supported by observations that (i) glomerular immunodeposits in patients with IgA nephropathy are enriched for galactose-deficient IgA1 glycoforms and the corresponding IgG autoantibodies; (ii) circulatory levels of galactose-deficient IgA1 and IgG autoantibodies predict disease progression; and (iii) pathogenic potential of galactose-deficient IgA1 and IgG autoantibodies was demonstrated in vivo. Thus, a better understanding of the structure–function of these immunoglobulins as autoantibodies and autoantigens will enable development of disease-specific treatments.
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19
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Zhang X, Liu X, Zhang Z, Zhao Y, Wang C. Atomic-Level Investigation of Reactant Recognition Mechanism and Thermodynamic Property in Glucosamine 6-Phosphate Deaminase Catalysis. Front Chem 2021; 9:737492. [PMID: 34414167 PMCID: PMC8369159 DOI: 10.3389/fchem.2021.737492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 07/20/2021] [Indexed: 11/13/2022] Open
Abstract
Glucosamine 6-phosphate deaminase (NagB) influences the direction of N-acetylglucosamine (GlcNAc) metabolism, facilitating the conversion of D-glucosamine 6-phosphate (GlcN6P) to D-fructose 6-phosphate (Fru6P) with the release of ammonia. Here, extensive molecular dynamics simulations combined with various techniques were performed to study the recognition and delivery process of GlcN6P by SmuNagB, due to its guidance of subsequent enzymatic reaction. The key residues Lys194, His130, Arg127, Thr38, and Ser37 stabilize GlcN6P in the active site by hydrogen bond interactions, therein electrostatic and polar solvent effects provide the primary traction. Four delivery channels were identified, with GlcN6P most likely to enter the active site of NagB through a “door” comprising residues 6–10, 122–136, and 222–233. The corresponding mechanism and thermodynamic properties were investigated. An exothermic recognition and delivery process were detected, accompanied by the flipping of GlcN6P and changes in key direct and indirect hydrogen bond interactions, which provide the driving force for the chemical reaction to occur. Furthermore, “the lid motif” was identified that remain open in alkaline condition with different extent of opening at each stage of transfer that induced GlcN6P to move the active site of NagB. The work will assist in the elucidation of the catalytic mechanism of action of NagB, allowing inhibitors to be designed with superior dynamic behavior.
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Affiliation(s)
- Xiao Zhang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Xiaoyuan Liu
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Zhiyang Zhang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Yuan Zhao
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
| | - Chaojie Wang
- The Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, China
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20
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Chen X, Daliri EBM, Tyagi A, Oh DH. Cariogenic Biofilm: Pathology-Related Phenotypes and Targeted Therapy. Microorganisms 2021; 9:microorganisms9061311. [PMID: 34208588 PMCID: PMC8234214 DOI: 10.3390/microorganisms9061311] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/06/2021] [Accepted: 06/14/2021] [Indexed: 01/02/2023] Open
Abstract
The initiation and development of cariogenic (that is, caries-related) biofilms are the result of the disruption of homeostasis in the oral microenvironment. There is a daily accumulation of dental biofilm on the surface of teeth and its matrix of extracellular polymers supports the host in its defense against invading microbes, thus helping to achieve oral microbial homeostasis. However, the homeostasis can be broken down under certain circumstances such as during long-term exposure to a low pH environment which results in the dominance of acidogenic and acid-tolerating species in the dental biofilm and, thus, triggers the shift of harmless biofilm to an acidic one. This work aims to explore microbial diversity and the quorum sensing of dental biofilm and their important contributions to oral health and disease. The complex and multispecies ecosystems of the cariogenic biofilm pose significant challenges for the modulation of the oral microenvironment. Promising treatment strategies are those that target cariogenic niches with high specificity without disrupting the balance of the surrounding oral microbiota. Here, we summarized the recent advances in modulating cariogenic biofilm and/or controlling its pathogenic traits.
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21
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d'Enfert C, Kaune AK, Alaban LR, Chakraborty S, Cole N, Delavy M, Kosmala D, Marsaux B, Fróis-Martins R, Morelli M, Rosati D, Valentine M, Xie Z, Emritloll Y, Warn PA, Bequet F, Bougnoux ME, Bornes S, Gresnigt MS, Hube B, Jacobsen ID, Legrand M, Leibundgut-Landmann S, Manichanh C, Munro CA, Netea MG, Queiroz K, Roget K, Thomas V, Thoral C, Van den Abbeele P, Walker AW, Brown AJP. The impact of the Fungus-Host-Microbiota interplay upon Candida albicans infections: current knowledge and new perspectives. FEMS Microbiol Rev 2021; 45:fuaa060. [PMID: 33232448 PMCID: PMC8100220 DOI: 10.1093/femsre/fuaa060] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 11/18/2020] [Indexed: 12/11/2022] Open
Abstract
Candida albicans is a major fungal pathogen of humans. It exists as a commensal in the oral cavity, gut or genital tract of most individuals, constrained by the local microbiota, epithelial barriers and immune defences. Their perturbation can lead to fungal outgrowth and the development of mucosal infections such as oropharyngeal or vulvovaginal candidiasis, and patients with compromised immunity are susceptible to life-threatening systemic infections. The importance of the interplay between fungus, host and microbiota in driving the transition from C. albicans commensalism to pathogenicity is widely appreciated. However, the complexity of these interactions, and the significant impact of fungal, host and microbiota variability upon disease severity and outcome, are less well understood. Therefore, we summarise the features of the fungus that promote infection, and how genetic variation between clinical isolates influences pathogenicity. We discuss antifungal immunity, how this differs between mucosae, and how individual variation influences a person's susceptibility to infection. Also, we describe factors that influence the composition of gut, oral and vaginal microbiotas, and how these affect fungal colonisation and antifungal immunity. We argue that a detailed understanding of these variables, which underlie fungal-host-microbiota interactions, will present opportunities for directed antifungal therapies that benefit vulnerable patients.
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Affiliation(s)
- Christophe d'Enfert
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
| | - Ann-Kristin Kaune
- Aberdeen Fungal Group, Institute of Medical Sciences, University of Aberdeen, Ashgrove Road West, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Leovigildo-Rey Alaban
- BIOASTER Microbiology Technology Institute, 40 avenue Tony Garnier, 69007 Lyon, France
- Université de Paris, Sorbonne Paris Cité, 25, rue du Docteur Roux, 75015 Paris, France
| | - Sayoni Chakraborty
- Microbial Immunology Research Group, Emmy Noether Junior Research Group Adaptive Pathogenicity Strategies, and the Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
- Institute of Microbiology, Friedrich Schiller University, Neugasse 25, 07743 Jena, Germany
| | - Nathaniel Cole
- Gut Microbiology Group, Rowett Institute, University of Aberdeen, Ashgrove Road West, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Margot Delavy
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
- Université de Paris, Sorbonne Paris Cité, 25, rue du Docteur Roux, 75015 Paris, France
| | - Daria Kosmala
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
- Université de Paris, Sorbonne Paris Cité, 25, rue du Docteur Roux, 75015 Paris, France
| | - Benoît Marsaux
- ProDigest BV, Technologiepark 94, B-9052 Gent, Belgium
- Center for Microbial Ecology and Technology (CMET), Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links, 9000 Ghent, Belgium
| | - Ricardo Fróis-Martins
- Immunology Section, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 266a, Zurich 8057, Switzerland
- Institute of Experimental Immunology, University of Zurich, Winterthurerstrasse 190, Zürich 8057, Switzerland
| | - Moran Morelli
- Mimetas, Biopartner Building 2, J.H. Oortweg 19, 2333 CH Leiden, The Netherlands
| | - Diletta Rosati
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Marisa Valentine
- Microbial Immunology Research Group, Emmy Noether Junior Research Group Adaptive Pathogenicity Strategies, and the Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Zixuan Xie
- Gut Microbiome Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119–129, 08035 Barcelona, Spain
| | - Yoan Emritloll
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
| | - Peter A Warn
- Magic Bullet Consulting, Biddlecombe House, Ugbrook, Chudleigh Devon, TQ130AD, UK
| | - Frédéric Bequet
- BIOASTER Microbiology Technology Institute, 40 avenue Tony Garnier, 69007 Lyon, France
| | - Marie-Elisabeth Bougnoux
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
| | - Stephanie Bornes
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMRF0545, 20 Côte de Reyne, 15000 Aurillac, France
| | - Mark S Gresnigt
- Microbial Immunology Research Group, Emmy Noether Junior Research Group Adaptive Pathogenicity Strategies, and the Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Bernhard Hube
- Microbial Immunology Research Group, Emmy Noether Junior Research Group Adaptive Pathogenicity Strategies, and the Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Ilse D Jacobsen
- Microbial Immunology Research Group, Emmy Noether Junior Research Group Adaptive Pathogenicity Strategies, and the Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstraße 11a, 07745 Jena, Germany
| | - Mélanie Legrand
- Unité Biologie et Pathogénicité Fongiques, Département de Mycologie, Institut Pasteur, USC 2019 INRA, 25, rue du Docteur Roux, 75015 Paris, France
| | - Salomé Leibundgut-Landmann
- Immunology Section, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 266a, Zurich 8057, Switzerland
- Institute of Experimental Immunology, University of Zurich, Winterthurerstrasse 190, Zürich 8057, Switzerland
| | - Chaysavanh Manichanh
- Gut Microbiome Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Passeig Vall d'Hebron 119–129, 08035 Barcelona, Spain
| | - Carol A Munro
- Aberdeen Fungal Group, Institute of Medical Sciences, University of Aberdeen, Ashgrove Road West, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands
| | - Karla Queiroz
- Mimetas, Biopartner Building 2, J.H. Oortweg 19, 2333 CH Leiden, The Netherlands
| | - Karine Roget
- NEXBIOME Therapeutics, 22 allée Alan Turing, 63000 Clermont-Ferrand, France
| | - Vincent Thomas
- BIOASTER Microbiology Technology Institute, 40 avenue Tony Garnier, 69007 Lyon, France
| | - Claudia Thoral
- NEXBIOME Therapeutics, 22 allée Alan Turing, 63000 Clermont-Ferrand, France
| | | | - Alan W Walker
- Gut Microbiology Group, Rowett Institute, University of Aberdeen, Ashgrove Road West, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Alistair J P Brown
- MRC Centre for Medical Mycology, Department of Biosciences, University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, UK
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22
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Naka S, Wato K, Misaki T, Ito S, Matsuoka D, Nagasawa Y, Nomura R, Matsumoto-Nakano M, Nakano K. Streptococcus mutans induces IgA nephropathy-like glomerulonephritis in rats with severe dental caries. Sci Rep 2021; 11:5784. [PMID: 33707585 PMCID: PMC7952735 DOI: 10.1038/s41598-021-85196-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/26/2021] [Indexed: 12/11/2022] Open
Abstract
The mechanisms underlying immunoglobulin A nephropathy (IgAN), the most common chronic form of primary glomerulonephritis, remain poorly understood. Streptococcus mutans, a Gram-positive facultatively anaerobic oral bacterium, is a common cause of dental caries. In previous studies, S. mutans isolates that express Cnm protein on their cell surface were frequently detected in IgAN patients. In the present study, inoculation of Cnm-positive S. mutans in the oral cavities of 2-week-old specific-pathogen free Sprague-Dawley rats fed a high-sucrose diet for 32 weeks produced severe dental caries in all rats. Immunohistochemical analyses of the kidneys using IgA- and complement C3-specific antibodies revealed positive staining in the mesangial region. Scanning electron microscopy revealed a wide distribution of electron dense deposits in the mesangial region and periodic acid-Schiff staining demonstrated prominent proliferation of mesangial cells and mesangial matrix. These results suggest that IgAN-like glomerulonephritis was induced in rats with severe dental caries by Cnm-positive S. mutans.
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Affiliation(s)
- Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kaoruko Wato
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Taro Misaki
- Division of Nephrology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
- Department of Nursing, Faculty of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka, Japan
| | - Seigo Ito
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Daiki Matsuoka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yasuyuki Nagasawa
- Department of Internal Medicine, Division of Kidney and Dialysis, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Ryota Nomura
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Division of Oral Infection and Disease Control, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
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23
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Khasnobish A, Takayasu L, Watanabe KI, Nguyen TTT, Arakawa K, Hotta O, Joh K, Nakano A, Hosomi S, Hattori M, Suda W, Morita H. Dysbiosis in the Salivary Microbiome Associated with IgA Nephropathy-A Japanese Cohort Study. Microbes Environ 2021; 36. [PMID: 34078780 PMCID: PMC8209455 DOI: 10.1264/jsme2.me21006] [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] [Indexed: 12/11/2022] Open
Abstract
IgA nephropathy is one of the leading causes of chronic kidney disease in Japan. Since the origin and mechanisms by which IgA nephropathy develops currently remain unclear, a confirmed disease diagnosis is currently only possible by highly invasive renal biopsy. With the background of the salivary microbiome as a rich source of biomarkers for systemic diseases, we herein primarily aimed to investigate the salivary microbiome as a tool for the non-invasive diagnosis of IgA nephropathy. In a comparison of salivary microbiome profiles using 16S rRNA amplicon sequencing, significant differences were observed in microbial diversity and richness between IgA nephropathy patients and healthy controls. Furthermore, recent studies reported that patients with IgA nephropathy are more likely to develop inflammatory bowel diseases and that chronic inflammation of the tonsils triggered the recurrence of IgA nephropathy. Therefore, we compared the salivary microbiome of IgA nephropathy patients with chronic tonsillitis and ulcerative colitis patients. By combining the genera selected by the random forest algorithm, we were able to distinguish IgA nephropathy from healthy controls with an area under the curve (AUC) of 0.90, from the ulcerative colitis group with AUC of 0.88, and from the chronic tonsillitis group with AUC of 0.70. Additionally, the genus Neisseria was common among the selected genera that facilitated the separation of the IgA nephropathy group from healthy controls and the chronic tonsillitis group. The present results indicate the potential of the salivary microbiome as a biomarker for the non-invasive diagnosis of IgA nephropathy.
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Affiliation(s)
- Anushka Khasnobish
- Laboratory of Animal Applied Microbiology, Graduate School of Environmental and Life Science, Okayama University
| | - Lena Takayasu
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo
| | - Ken-Ichi Watanabe
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine
| | - Tien Thi Thuy Nguyen
- Faculty of Engineering and Technology College of Agriculture and Forestry, Hue University
| | - Kensuke Arakawa
- Laboratory of Animal Applied Microbiology, Graduate School of Environmental and Life Science, Okayama University
| | | | - Kensuke Joh
- Department of Pathology, Tohoku University Graduate School of Medicine
| | - Akiyo Nakano
- Department of Microbiology and Infectious Diseases, Nara Medical University
| | - Shuhei Hosomi
- Department of Gastroenterology, Osaka City University Graduate School of Medicine
| | - Masahira Hattori
- Laboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences
| | - Wataru Suda
- Laboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences
| | - Hidetoshi Morita
- Laboratory of Animal Applied Microbiology, Graduate School of Environmental and Life Science, Okayama University
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24
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Fisher M, Lau WL. Of Microbiomes and Microbleeds: A New Piece of the Puzzle? Stroke 2020; 51:3489-3491. [PMID: 33148141 DOI: 10.1161/strokeaha.120.032422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mark Fisher
- Department of Neurology (M.F.), UC Irvine School of Medicine, CA
| | - Wei Ling Lau
- Division of Nephrology, Department of Medicine (W.L.L.), UC Irvine School of Medicine, CA
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25
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Hosoki S, Saito S, Tonomura S, Ishiyama H, Yoshimoto T, Ikeda S, Ikenouchi H, Yamamoto Y, Hattori Y, Miwa K, Friedland RP, Carare RO, Nakahara J, Suzuki N, Koga M, Toyoda K, Nomura R, Nakano K, Takegami M, Ihara M. Oral Carriage of Streptococcus mutans Harboring the cnm Gene Relates to an Increased Incidence of Cerebral Microbleeds. Stroke 2020; 51:3632-3639. [PMID: 33148146 PMCID: PMC7678651 DOI: 10.1161/strokeaha.120.029607] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Supplemental Digital Content is available in the text. Cerebral microbleeds (CMB) are associated with stroke and cognitive impairment. We previously reported a high prevalence of CMB in people with Streptococcus mutans expressing Cnm, a collagen-binding protein in the oral cavity. S.mutans is a major pathogen responsible for dental caries. Repeated challenge with S.mutans harboring the cnm gene encoding Cnm induced cerebral bleeding in stroke-prone spontaneously hypertensive rats. The purpose of this longitudinal study is to examine the relationship of cnm-positive S.mutans to the development of CMB.
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Affiliation(s)
- Satoshi Hosoki
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan.,Department of Neurology, Keio University School of Medicine, Tokyo, Japan (S.H., J.N., N.S., K.T.)
| | - Satoshi Saito
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan.,Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan (S.S., R.N., K.N.).,Faculty of Medicine, University of Southampton, United Kingdom (S.S., R.O.C.)
| | - Shuichi Tonomura
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan.,Department of Neurology, Graduate School of Medicine, Kyoto University, Japan (S.T.)
| | - Hiroyuki Ishiyama
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takeshi Yoshimoto
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shuhei Ikeda
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Hajime Ikenouchi
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yumi Yamamoto
- Department of Molecular Innovation in Lipidemiology (Y.Y.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yorito Hattori
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kaori Miwa
- Department of Cerebrovascular Medicine (K.M., M.K., K.T.), National Cerebral and Cardiovascular Center, Suita, Japan
| | | | - Roxana O Carare
- Faculty of Medicine, University of Southampton, United Kingdom (S.S., R.O.C.)
| | - Jin Nakahara
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan (S.H., J.N., N.S., K.T.)
| | - Norihiro Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan (S.H., J.N., N.S., K.T.)
| | - Masatoshi Koga
- Department of Cerebrovascular Medicine (K.M., M.K., K.T.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kazunori Toyoda
- Department of Cerebrovascular Medicine (K.M., M.K., K.T.), National Cerebral and Cardiovascular Center, Suita, Japan.,Department of Neurology, Keio University School of Medicine, Tokyo, Japan (S.H., J.N., N.S., K.T.)
| | - Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan (S.S., R.N., K.N.)
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Japan (S.S., R.N., K.N.)
| | - Misa Takegami
- Department of Preventive Medicine and Epidemiology (M.T.), National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masafumi Ihara
- Department of Neurology (S.H., S.S., S.T., H. Ishiyama, T.Y., S.I., H. Ikenouchi, Y.H., M.I.), National Cerebral and Cardiovascular Center, Suita, Japan
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26
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Nomura R, Otsugu M, Hamada M, Matayoshi S, Teramoto N, Iwashita N, Naka S, Matsumoto-Nakano M, Nakano K. Potential involvement of Streptococcus mutans possessing collagen binding protein Cnm in infective endocarditis. Sci Rep 2020; 10:19118. [PMID: 33154489 PMCID: PMC7645802 DOI: 10.1038/s41598-020-75933-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/22/2020] [Indexed: 12/15/2022] Open
Abstract
Streptococcus mutans, a significant contributor to dental caries, is occasionally isolated from the blood of patients with infective endocarditis. We previously showed that S. mutans strains expressing collagen-binding protein (Cnm) are present in the oral cavity of approximately 10-20% of humans and that they can effectively invade human umbilical vein endothelial cells (HUVECs). Here, we investigated the potential molecular mechanisms of HUVEC invasion by Cnm-positive S. mutans. The ability of Cnm-positive S. mutans to invade HUVECs was significantly increased by the presence of serum, purified type IV collagen, and fibrinogen (p < 0.001). Microarray analyses of HUVECs infected by Cnm-positive or -negative S. mutans strains identified several transcripts that were differentially upregulated during invasion, including those encoding the small G protein regulatory proteins ARHGEF38 and ARHGAP9. Upregulation of these proteins occurred during invasion only in the presence of serum. Knockdown of ARHGEF38 strongly reduced HUVEC invasion by Cnm-positive S. mutans. In a rat model of infective endocarditis, cardiac endothelial cell damage was more prominent following infection with a Cnm-positive strain compared with a Cnm-negative strain. These results suggest that the type IV collagen-Cnm-ARHGEF38 pathway may play a crucial role in the pathogenesis of infective endocarditis.
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Affiliation(s)
- Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan.
| | - Masatoshi Otsugu
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Masakazu Hamada
- Department of Oral and Maxillofacial Surgery II, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Saaya Matayoshi
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | | | - Naoki Iwashita
- Department of Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Shuhei Naka
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, 1-8 Yamada-oka, Suita, Osaka, 565-0871, Japan
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27
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Balhaddad AA, AlQranei MS, Ibrahim MS, Weir MD, Martinho FC, Xu HHK, Melo MAS. Light Energy Dose and Photosensitizer Concentration Are Determinants of Effective Photo-Killing against Caries-Related Biofilms. Int J Mol Sci 2020; 21:ijms21207612. [PMID: 33076241 PMCID: PMC7589159 DOI: 10.3390/ijms21207612] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 12/27/2022] Open
Abstract
Caries-related biofilms and associated complications are significant threats in dentistry, especially when biofilms grow over dental restorations. The inhibition of cariogenic biofilm associated with the onset of carious lesions is crucial for preventing disease recurrence after treatment. This in vitro study defined optimized parameters for using a photosensitizer, toluidine blue O (TBO), activated via a red light-emitting diode (LED)-based wireless device to control the growth of cariogenic biofilms. The effect of TBO concentrations (50, 100, 150, and 200 μg/mL) exposed to light or incubated in the dark was investigated in successive cytotoxicity assays. Then, a mature Streptococcus mutans biofilm model under sucrose challenge was treated with different TBO concentrations (50, 100, and 150 μg/mL), different light energy doses (36, 108, and 180 J/cm2), and different incubation times before irradiation (1, 3, and 5 min). The untreated biofilm, irradiation with no TBO, and TBO incubation with no activation represented the controls. After treatments, biofilms were analyzed via S. mutans colony-forming units (CFUs) and live/dead assay. The percentage of cell viability was within the normal range compared to the control when 50 and 100 μg/mL of TBO were used. Increasing the TBO concentration and energy dose was associated with biofilm inhibition (p < 0.001), while increasing incubation time did not contribute to bacterial elimination (p > 0.05). Irradiating the S. mutans biofilm via 100 μg/mL of TBO and ≈180 J/cm2 energy dose resulted in ≈3-log reduction and a higher amount of dead/compromised S. mutans colonies in live/dead assay compared to the control (p < 0.001). The light energy dose and TBO concentration optimized the bacterial elimination of S. mutans biofilms. These results provide a perspective on the determining parameters for highly effective photo-killing of caries-related biofilms and display the limitations imposed by the toxicity of the antibacterial photodynamic therapy’s chemical components. Future studies should support investigations on new approaches to improve or overcome the constraints of opportunities offered by photodynamic inactivation of caries-related biofilms.
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Affiliation(s)
- Abdulrahman A. Balhaddad
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
| | - Mohammed S. AlQranei
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
| | - Maria S. Ibrahim
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia
| | - Michael D. Weir
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Frederico C. Martinho
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Hockin H. K. Xu
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
- Correspondence: (H.H.K.X.); (M.A.S.M.)
| | - Mary Anne S. Melo
- Ph.D. Program in Dental Biomedical Sciences, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; (A.A.B.); (M.S.A.); (M.S.I.); (M.D.W.); (F.C.M.)
- Division of Operative Dentistry, Department of General Dentistry, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
- Correspondence: (H.H.K.X.); (M.A.S.M.)
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Zhu A, Yang X, Bai L, Hou Y, Guo C, Zhao D, Wen M, Jiang P, Liu Y, Huang Y, Li C, Meng H. Analysis of microbial changes in the tonsillar formalin-fixed paraffin-embedded tissue of Chinese patients with IgA nephropathy. Pathol Res Pract 2020; 216:153174. [PMID: 32836053 DOI: 10.1016/j.prp.2020.153174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/09/2020] [Accepted: 08/10/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Immunoglobulin A nephropathy (IgAN) is a prevalent chronic glomerular disease contribution to end-stage renal failure (ESRD). The tonsillar microbiota is closely associated with IgAN diseases based on the mucosal immune response. However, the composition and function of in tonsillar microbiota in participant patients with IgAN remains unknown. In this study, we detected the tonsillar microbiota changes of IgAN patients in Heilongjiang province located in northeast China. MATERIAL AND METHODS We collected from 21 patients with IgAN and 16 patients with chronic tonsillitis (CT) who had undergone tonsillectomy previously. Histological review of all samples from formalin-fixed paraffin-embedded (FFPE) tissue were performed. Extracted DNA from FFPE tissue blocks, after that V4 regions of 16S ribosomal RNA (rRNA) sequencing and comparative analyses of tonsillar flora between two groups were performed. The statistical analysis used the SPSS version of 21. RESULTS Visualization of microorganisms by Gram and Warthin-Starry (WS) silver stains, preliminarily observed the morphological characteristics of microbiome in FFPE tissue cases, such as bacteria or fungi. Tonsillar FFPE samples from the IgAN patients and CT controls showed significant differences in tonsillar microbial certain compositions and functions. We found that there were eight dominant genera that can be available to distinguish IgAN patients from CT controls. Compared with CT controls, at genus level, the relative abundances of Methylocaldum and unclassified_f_Prevotellaceae were significantly higher, while the abundances of Anaerosphaera, Halomonas, Trichococcus, Peptostreptococcus, norank_f_Synergistaceae and unclassified_k_norank_d_Bacteria were significantly lower in IgAN patients. Principal co-ordinates analysis (PCOA) distinguished IgAN patients from CT controls, and receiver operating characteristic (ROC) curves analysis confirmed that the diagnosis of disease has certain diagnostic significance. In addition, Functional analysis revealed that partly Enzymes and KOs were increased in the IgAN patients. CONCLUSIONS Histological screening results were very helpful for further gene sequencing, not only to supplement the observation of bacterial morphology and structure, but also to prepare for subsequent gene sequencing and bioinformatics analysis. We elucidated subtle relevance between changes in tonsillar microbiota and IgAN patients, which can be utilized to predict the incidence of IgAN disease. In addition, we predicted that some enzymes, and KOs were closely related to IgAN.
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Affiliation(s)
- Anchao Zhu
- Department of pathology, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China; Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China; Department of pathology, Harbin First Hospital, Heilongjiang, Harbin, 150010, PR China
| | - Xinxin Yang
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Lijing Bai
- Department of Laboratory Diagnosis, the First Affiliated Hospital of Harbin Medical University, Heilongjiang, Harbin, 150001, PR China
| | - Yunjing Hou
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Chenxu Guo
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Di Zhao
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Meina Wen
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Ping Jiang
- Department of pathology, Harbin First Hospital, Heilongjiang, Harbin, 150010, PR China
| | - Yuyan Liu
- Department of pathology, Harbin First Hospital, Heilongjiang, Harbin, 150010, PR China
| | - Ying Huang
- Department of pathology, Harbin First Hospital, Heilongjiang, Harbin, 150010, PR China
| | - Chen Li
- Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China
| | - Hongxue Meng
- Department of pathology, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China; Department of pathology, Harbin Medical University Cancer Hospital, Harbin Medical University, Heilongjiang, Harbin, 150081, PR China.
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29
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Tang Y, He H, Hu P, Xu X. T lymphocytes in IgA nephropathy. Exp Ther Med 2020; 20:186-194. [PMID: 32509008 PMCID: PMC7271719 DOI: 10.3892/etm.2020.8673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 03/19/2020] [Indexed: 02/07/2023] Open
Abstract
Immunoglobulin A nephropathy (IgAN), the most common primary glomerulonephritis worldwide, is the main cause of end-stage renal disease. IgAN is characterized by the accumulation of immune complexes in the circulation, which contain abnormal levels of IgA. IgAN primarily results from galactose-deficient IgA1 (Gd-IgA1) and Gd-IgA1 deposition in the renal mesangium, causing local proliferation and matrix expansion. Gd-IgA1 has been confirmed as one of the key effectors in the pathogenesis of IgAN, but the origin of Gd-IgA1 is not clear. Recent studies have shown that Gd-IgA1 deposition could be the result of mucosally primed plasma cells and is associated with T cell dysregulation. T cells contribute to the IgA response and play an important role in the development of IgAN. In the present review, the latest discoveries regarding the role of T lymphocytes in the pathogenesis of IgAN have been summarized. Understanding these advances will allow novel therapeutic strategies for the treatment of IgAN.
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Affiliation(s)
- Yuyan Tang
- Department of Nephrology, Minhang Hospital, Fudan University, Shanghai 201199, P.R. China
| | - Haidong He
- Department of Nephrology, Minhang Hospital, Fudan University, Shanghai 201199, P.R. China
| | - Pin Hu
- Department of Nephrology, Minhang Hospital, Fudan University, Shanghai 201199, P.R. China
| | - Xudong Xu
- Department of Nephrology, Minhang Hospital, Fudan University, Shanghai 201199, P.R. China
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