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Xie Y, Fan Y, Su M, Wang Y, Zhang G. Characteristics of the oral microbiota in patients with primary Sjögren's syndrome. Clin Rheumatol 2024; 43:1939-1947. [PMID: 38602612 DOI: 10.1007/s10067-024-06958-9] [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: 02/08/2023] [Revised: 02/28/2024] [Accepted: 04/02/2024] [Indexed: 04/12/2024]
Abstract
OBJECTIVE Primary Sjögren's syndrome (pSS) is an autoimmune disease with unknown etiology that is considered to be related to environmental and genetic factors. The aim of this study was to clarify the oral microflora characteristics of pSS patients and to reveal the connection between oral bacterial composition and dental caries using a high-throughput sequencing technique. METHODS Thirty-five pSS patients and 20 healthy controls were enrolled in this study. We collected saliva and plaque samples from pSS patients and saliva samples from healthy controls. We used 16S ribosomal DNA (16S rDNA) high-throughput sequencing targeting the V3-V4 hypervariable region to determine the composition and structure of the microbiota in the three sample sets. Finally, bioinformatics analyses, including the diversity of the microbiota, species differences, and functional prediction were performed. RESULTS In the alpha diversity and beta diversity analysis, the Chao1 (P < 0.01), observed species (P < 0.01), and PD whole tree indices (P < 0.01) were significantly lower in the saliva and plaque samples of pSS patients than in the saliva samples of healthy controls, but the Shannon (P < 0.01) and Simpson indices (P < 0.01) were significantly higher in the healthy controls, and their total diversity significantly differed. In the main flora composition at the genus level (top 10), we identified Prevotella and Veillonella as more enriched in the saliva of pSS patients and Fusobacterium, Actinomyces, and Leptotrichia as more enriched in the plaque of pSS patients. Predictive functional analysis showed that the oral microbiota of pSS patients was related to translation, metabolism of cofactors and vitamins, and nucleotide metabolism. CONCLUSIONS The oral microbial ecology of patients with pSS is dysregulated, resulting in a decrease in overall diversity. Prevotella and Veillonella may be related to pSS, while Fusobacterium, Actinomyces, and Leptotrichia may be related to dental caries in pSS patients. Key Points • This study revealed differences in the oral microbial composition of patients with pSS compared to healthy controls. • We included a plaque group of pSS patients to identify the microbiota related to pSS and dental caries. • Prevotella and Veillonella may contribute to pSS, and Fusobacterium, Actinomyces, and Leptotrichia are associated with dental caries in pSS patients.
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Affiliation(s)
- Yiwen Xie
- Department of Stomatology, Shantou Central Hospital, Shantou, 515041, China.
| | - Yu Fan
- Department of Pathology, Shantou University Medical College, Shantou, 515041, China
| | - Miaotong Su
- Department of Pathology, Shantou University Medical College, Shantou, 515041, China
| | - Yukai Wang
- Department of Rheumatology and Immunology, Shantou Central Hospital, Shantou, 515041, China
| | - Guohong Zhang
- Department of Pathology, Shantou University Medical College, Shantou, 515041, China.
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Stankeviciene I, Stangvaltaite-Mouhat L, Aleksejuniene J, Mieliauskaite D, Talijuniene I, Butrimiene I, Bendinskaite R, Puriene A. Oral health status, related behaviours and perceived stress in xerostomia, Sicca and Sjögren's syndromes patients - a cross-sectional study. BMC Oral Health 2024; 24:454. [PMID: 38622697 PMCID: PMC11017497 DOI: 10.1186/s12903-024-04224-7] [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: 09/27/2023] [Accepted: 04/03/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Mouth dryness increases the risk of some oral health-related conditions. Furthermore, it is unclear if patients with dry mouth engage in appropriate oral health-related behaviours. The study examined oral health, related behaviours, and perceived stress in dry-mouth patients and compared them to matched controls without mouth dryness. METHODS Information about 182 dry-mouth patients and 302 age- and sex-matched subjects was retrieved. Three dry mouth groups: xerostomia, Sicca syndrome and Sjögren's syndrome, were formed based on patient self-reported and objectively assessed symptoms. The World Health Organization's Oral Health for Adults and Perceived Stress Scale (PSS-10) questionnaires inquired about sociodemographic characteristics, oral health-related behaviours, and self-perceived stress. Clinical oral health assessments included: caries experience measured as total numbers of decayed (DS), missing (MS), filled surfaces (FS), number of remaining teeth, erosive tooth wear and extent of periodontal pocketing. Data were analyzed using bivariate and multivariable tests. RESULTS The dry-mouth participants had higher mean (SD) DMFS scores than their matched controls: xerostomia patients vs. controls: 74.6 (34.4) and 66.3 (35.4), Sicca syndrome patients vs. controls: 88.3 (34.0) and 70.1 (33.9), and Sjögren's syndrome patients vs. controls: 95.7 (31.5) and 74 (33.2). In comparison to controls, individuals with Sicca and patients with Sjögren's syndromes had lower mean (SD) number of remaining teeth, 15.9 (10.1) vs. 21.7 (8.4) and 13.8 (10.0) vs. 20.1 (9.2), and a lower mean (SD) extent of periodontal pocketing, 20.7 (28.6) vs. 41.1 (31.0), and 21.2 (24.1) vs. 34.8 (34.2), respectively. Xerostomia, Sicca syndrome and Sjögren's syndrome patients had higher odds of using fluoridated toothpaste; OR 1.8 (95%CI 1.1-2.9), OR 5.6 (95%CI 1.7-18.3) and OR 6.9 (95%CI 2.2-21.3), respectively. Participants with Sjögren's syndrome had lower odds of the last dental visit being within the last year; OR 0.2 (95%CI 0.1-0.8). CONCLUSIONS Dry-mouth patients had higher caries experience and fewer teeth than comparison groups but a lower extent of periodontal pocketing. Even though more participants with dry mouth used fluoridated toothpastes, their oral health-related behaviours were not optimal.
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Affiliation(s)
- Indre Stankeviciene
- Institute of Dentistry, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
| | | | - Jolanta Aleksejuniene
- Department of Oral Health Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, Canada
| | - Diana Mieliauskaite
- Department of Personalised Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Ieva Talijuniene
- Department of Personalised Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Irena Butrimiene
- Clinic of Rheumatology, Orthopaedics Traumatology and Reconstructive Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Ruta Bendinskaite
- Institute of Dentistry, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Alina Puriene
- Institute of Dentistry, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
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Kaibori Y, Tamoto S, Okuda S, Matsuo K, Nakayama T, Nagakubo D. CCL28: A Promising Biomarker for Assessing Salivary Gland Functionality and Maintaining Healthy Oral Environments. BIOLOGY 2024; 13:147. [PMID: 38534417 DOI: 10.3390/biology13030147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/28/2024]
Abstract
The oral cavity serves as the primary path through which substances from the outside world enter our body. Therefore, it functions as a critical component of host defense. Saliva is essential for maintaining a stable oral environment by catching harmful agents, including pathogens, allergens, and chemicals, in the air or food. CCL28, highly expressed in mucosal tissues, such as the colon and salivary glands, is a chemokine that attracts CCR10/CCR3 expressing cells. However, the role of CCL28 in salivary gland formation remains unclear. In this study, we investigated the salivary gland structure in CCL28-deficient mice. Histological analysis showed decreased staining intensity of Alcian blue, which detects acidic mucous, reduced expression of MUC2, and higher infiltration of gram-positive bacteria in the salivary glands of CCL28-deficient mice. In addition, CCL28-deficient mice contained ectopically MUC2-expressed cells in the ducts and reduced the expression of cytokeratin 18, a marker for ductal cells, within the submandibular glands, resulting in decreased duct numbers. Additionally, the submandibular glands of CCL28-deficient mice showed reduced expression of several stem cell markers. These results suggest that CCL28 regulates saliva production via proper differentiation of salivary gland stem cells and could be a valuable biomarker of salivary gland function.
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Affiliation(s)
- Yuichiro Kaibori
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
- Laboratory of Analytics for Biomolecules, Faculty of Pharmaceutical Science, Setsunan University, 45-1 Nagaotoge-cho, Hirakata-shi 573-0101, Osaka, Japan
| | - Saho Tamoto
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
| | - Sayoko Okuda
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
| | - Kazuhiko Matsuo
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan
| | - Takashi Nakayama
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, 3-4-1 Kowakae, Higashi-Osaka 577-8502, Osaka, Japan
| | - Daisuke Nagakubo
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
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He W, Lu Y, Shi R, An Q, Zhao J, Gao X, Zhang L, Ma D. Application of omics in Sjögren's syndrome. Inflamm Res 2023; 72:2089-2109. [PMID: 37878024 DOI: 10.1007/s00011-023-01797-x] [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: 08/07/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 10/26/2023] Open
Abstract
OBJECTIVE The pathogenesis, diagnosis, and treatment of Sjögren's syndrome (SS) face many challenges, and there is an urgent need to develop new technologies to improve our understanding of SS. METHODS By searching the literature published domestically and internationally in the past 20 years, this artical reviewed the research of various omics techniques in SS. RESULTS Omics technology provided valuable insights into the pathogenesis, early diagnosis, condition and efficacy evaluation of SS. It is helpful to reveal the pathogenesis of the disease and explore new treatment schemes, which will open a new era for the study of SS. CONCLUSION At present, omics research has made some gratifying achievements, but there are still many uncertainties. Therefore, in the future, we should improve research techniques, standardize the collection of samples, and adopt a combination of multi-omics techniques to jointly study the pathogenesis of SS and provide new schemes for its treatment.
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Affiliation(s)
- Wenqin He
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Yangyang Lu
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Rongjing Shi
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Qi An
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Jingwen Zhao
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Xinnan Gao
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Liyun Zhang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China
| | - Dan Ma
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China.
- Shanxi Province Clinical Research Center for Dermatologic and Immunologic Diseases (Rheumatic Diseases), Taiyuan, China.
- Shanxi Province Clinical Theranostics Technology Innovation Center for Immunologic and Rheumatic Diseases, Taiyuan, China.
- Shanxi Academy of Advanced Research and Innovation, Taiyuan, 030032, China.
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Ye Z, He J, Ji H, Xu H, Zhang Y, Zhou K, Liu H. Case report: isolated prevotella intermedia causing intracranial infection detected using metagenomic next generation sequencing. BMC Neurol 2023; 23:383. [PMID: 37872501 PMCID: PMC10591364 DOI: 10.1186/s12883-023-03374-5] [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: 03/12/2023] [Accepted: 09/08/2023] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Isolated Prevotella intermedia, a rare gram-negative, rod-shaped, anaerobic bacterium, is rarely detected in clinical practice. It has been associated with infections of the oral cavity and female genital tract, but has never been detected in cerebrospinal fluid (CSF) of patients in China. Accurate detection of causative pathogens is still an arduous task owing to the difficult conditions of anaerobic bacterial culture. Isolated Prevotella intermedia can be detected by metagenomic next generation sequencing (mNGS) of the CSF. Correct diagnosis and antibiotic treatment can help patients avoid life-threatening events. CASE PRESENTATION Herein, we describe the case of a 64-year-old Chinese woman who presented with typical features of meningoencephalitis. Routine CSF culture failed to identify the causative pathogen. Isolated Prevotella intermedia was detected by mNGS, and the patient was treated with antibacterial agents including ceftriaxone, vancomycin, moxifloxacin, meropenem, metronidazole, and linezolid. The patient underwent surgical treatment for abscess of left frontal parietal lobe, which was observed on magnetic resonance imaging (MRI) and was suspected to be caused by Prevotella intermedia. It was further confirmed that it was a secondary infection from the oral cavity, and the possible etiology might have been dental surgery. Treatment was rendered to the patient based on metagenomic test result, and her condition improved after two months. CONCLUSIONS This case highlights the role of mNGS in accurate diagnosis of patients with central nervous system infection. In particular, mNGS can be used to identify rare pathogens and confirm the diagnosis in patients with unknown etiology.
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Affiliation(s)
- Zhinan Ye
- Department of Neurology, Municipal Hospital Affiliated to the Medical School of Taizhou University, Taizhou, Zhejiang Province, China
| | - Jinfeng He
- Department of Neurology, Municipal Hospital Affiliated to the Medical School of Taizhou University, Taizhou, Zhejiang Province, China
| | - Hailong Ji
- Department of Neurosurgery, Municipal Hospital Affiliated to the Medical School of Taizhou University, No. 381 of East Zhongshan Road, Jiaojiang District, 318000, Taizhou, Zhejiang Province, China
| | - Hao Xu
- Department of Neurology, Municipal Hospital Affiliated to the Medical School of Taizhou University, Taizhou, Zhejiang Province, China
| | - Yaping Zhang
- Department of Neurology, Municipal Hospital Affiliated to the Medical School of Taizhou University, Taizhou, Zhejiang Province, China
| | - Kaiyu Zhou
- Department of Neurosurgery, Municipal Hospital Affiliated to the Medical School of Taizhou University, No. 381 of East Zhongshan Road, Jiaojiang District, 318000, Taizhou, Zhejiang Province, China.
| | - Hongwei Liu
- Department of Neurology, Taiyuan Central Hospital, Shanxi Medical University, No.5, Three lanes East Road, Taiyuan, 030000, Shanxi Province, China.
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Saúco C, Rus MJ, Nieto MR, Barros C, Cantiga-Silva C, Lendines-Cordero D, Calderer-Ortiz M, Zurita-García M, Arias-Herrera S, Monsalve-Guil L, Segura-Egea JJ, Simon-Soro A. Hyposalivation but not Sjögren's syndrome associated with microbial dysbiosis in women. Front Microbiol 2023; 14:1240891. [PMID: 37869670 PMCID: PMC10588445 DOI: 10.3389/fmicb.2023.1240891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
Background Saliva modulates the environment of the oral biofilm through pH buffer, microbial attachment to host surfaces, and nutritional source. The ecology of stress occurs when a physical factor adversely impacts an ecosystem or its biotic components. Therefore, reduced salivary flow can affect oral-host balance. The leading causes of hyposalivation include disease-associated Sjögren's syndrome (SS) and menopausal women as aging-associated. However, little is known about the oral microbiome integrated with sex hormones in hyposalivation. This study aimed to characterize the hyposalivation microbiome caused by aging or disease affecting the salivary glands in women. Methods We included 50 women older than 40 years of age in any menopausal phase. We collected stimulated saliva from 25 women diagnosed with SS (SS) and 25 without SS (non-SS). The bacterial profile of the patients was obtained by 16S rRNA sequencing. Bioinformatics analysis used machine learning to analyze the cohort's signs, symptoms, and bacterial profile. Salivary estradiol as a sex hormone variation level was determined. Results We obtained that 79% of the SS group, and 52% of the non-SS group had hyposalivation. We found a negatively correlated Prevotella-age and Rothia-estradiol in the SS group. Highlight, we found that the cause of the hyposalivation in the study did not explain differences in microbial diversity comparing non-SS and SS groups. Therefore, microbial communities found in hyposalivation but not related to systemic conditions suggest that changes in the oral environment might underpin host-microbial balance. Conclusion The salivary microbiome was similar in women with and without SS. However, hyposalivation showed two distinctive clusters associated with the bacterial population profiles. Our study suggests that local ecological disturbances could drive the change in the microbiome.
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Affiliation(s)
- Carlos Saúco
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Maria J. Rus
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - María R. Nieto
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Carolina Barros
- Department of Preventive and Restorative Dentistry, Dental School, São Paulo State University (UNESP), Araçatuba, Brazil
| | - Cristiane Cantiga-Silva
- Department of Preventive and Restorative Dentistry, Dental School, São Paulo State University (UNESP), Araçatuba, Brazil
| | | | - Marta Calderer-Ortiz
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Miriam Zurita-García
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Santiago Arias-Herrera
- Department of Dentistry, Faculty of Health Sciences, Universidad Europea de Valencia, Valencia, Spain
| | - Loreto Monsalve-Guil
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Juan José Segura-Egea
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
| | - Aurea Simon-Soro
- Department of Stomatology, Faculty of Dentistry, University of Seville, Seville, Spain
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Bustos-Lobato L, Rus MJ, Saúco C, Simon-Soro A. Oral microbial biomap in the drought environment: Sjogren's syndrome. Mol Oral Microbiol 2023; 38:400-407. [PMID: 37767604 DOI: 10.1111/omi.12435] [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: 07/18/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
Sjogren's syndrome (SS) is an autoimmune disease that affects primarily the salivary glands, making perturbations in the oral ecosystem and potential factors of salivary flow that influence the onset and development of the disease. The oral cavity contains diverse microorganisms that inhabit various niches such as the oral microbial "biomap." It does not seem specific enough to establish a characteristic microbiome, given the diversity of clinical manifestations, variable rates of salivary secretion, and influential risk factors in patients with SS. This review discusses the biogeography of the oral microbiome in patients with SS such as saliva, tongue, tooth, mucosa, and gum. The microorganisms that were more abundant in the different oral niches were Gram-positive species, suggesting a higher survival of cell wall bacteria in this arid oral environment. Reduced salivary flow appears not to be linked to the cause of dysbiosis alone but influences host-associated risk factors. However, much work remains to be done to establish the role of the microbiome in the etiopathogenesis of autoimmune diseases such as SS. Future studies of the microbiome in autoimmunity will shed light on the role of specific microorganisms that have never been linked before with SS.
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Affiliation(s)
- Laura Bustos-Lobato
- Facultad de Odontología, Departamento de Estomatología, Universidad de Sevilla, Sevilla, Spain
| | - Maria J Rus
- Facultad de Odontología, Departamento de Estomatología, Universidad de Sevilla, Sevilla, Spain
| | - Carlos Saúco
- Facultad de Odontología, Departamento de Estomatología, Universidad de Sevilla, Sevilla, Spain
| | - Aurea Simon-Soro
- Facultad de Odontología, Departamento de Estomatología, Universidad de Sevilla, Sevilla, Spain
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Asahina H, Ogasawara T, Akieda T, Miyahara K, Okada Y, Matsumura K, Taniguchi M, Yoshida A, Kakinoki Y. Palatal microbiota associated with membranous substances in older Japanese individuals undergoing tube feeding in long-term care: A cross-sectional study. Heliyon 2023; 9:e20401. [PMID: 37780754 PMCID: PMC10539663 DOI: 10.1016/j.heliyon.2023.e20401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023] Open
Abstract
Objective Tube feeders are prone to membranous substance formation on the palate, and those with membranous substances have a risk of fever, with the probable involvement of their oral bacteria. However, the palatal microbiota of those with membranous substances has not been elucidated. Therefore, we evaluated the differences in palatal microbiota between tube-fed individuals with and without membranous substances to clarify the microbiota. Materials and methods This study included 19 participants aged 65 years who required tube feeding. The participants' characteristics were collected from nursing records and oral examinations. If membranous materials were found on the palate, a specimen was collected. Membranous substances were defined as keratotic degeneration observed under a microscope. Additionally, we performed a comprehensive microbiome analysis by extracting DNA from the samples and performing 16 S rRNA gene sequencing. Finally, we compared the participant demographics and oral microbiota between patients with and without membranous substances. Results A total of 11 participants had membranous substances associated with "mouth dryness" (p < 0.001) and "constant mouth opening" (p = 0.020). Palatal microbiota differed between those with and without membranous substances. Among the bacteria with a relative abundance greater than 1.0%, the abundance of Streptococcus (p = 0.007), Fusobacterium (p = 0.041), Streptococcus agalactiae (p = 0.009), and Fusobacterium nucleatum subsp. vincentii (p = 0.026) was significantly higher in the membranous substance group than in the non-membranous substance group. Conclusions The palatal microbiota of individuals undergoing tube feeding differed depending on the presence or absence of membranous substances. Membrane substance formation associated with dry mouth purportedly alters the palatal microbiota. Streptococcus, Fusobacterium, S. agalactiae, and F. nucleatum subsp. vincentii were more abundant in the oral microbiota of patients with membranous substances. Thus, preventing this formation may help in controlling the growth of these microbes.
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Affiliation(s)
- Hironao Asahina
- Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, Nagano, 399-0704, Japan
- Department of Special Care Dentistry, Hiroshima University Hospital, Hiroshima, 734-8551, Japan
| | - Tadashi Ogasawara
- Matsumoto Dental University, Nagano, 399-0704, Japan
- Yokosuna Dental Clinic, Shizuoka, 424-0035, Japan
| | | | - Kohta Miyahara
- Department of Special Care Dentistry, Hiroshima University Hospital, Hiroshima, 734-8551, Japan
| | - Yoshiyuki Okada
- Department of Special Care Dentistry, Hiroshima University Hospital, Hiroshima, 734-8551, Japan
| | | | | | - Akihiro Yoshida
- Department of Oral Microbiology, Matsumoto Dental University, Nagano, 399-0704, Japan
| | - Yasuaki Kakinoki
- Department of Special Needs and Geriatric Dentistry, Kyushu Dental University, Fukuoka, 803-8580, Japan
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9
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Nagakubo D, Kaibori Y. Oral Microbiota: The Influences and Interactions of Saliva, IgA, and Dietary Factors in Health and Disease. Microorganisms 2023; 11:2307. [PMID: 37764151 PMCID: PMC10535076 DOI: 10.3390/microorganisms11092307] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/31/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Recent advances in metagenomic analyses have made it easier to analyze microbiota. The microbiota, a symbiotic community of microorganisms including bacteria, archaea, fungi, and viruses within a specific environment in tissues such as the digestive tract and skin, has a complex relationship with the host. Recent studies have revealed that microbiota composition and balance particularly affect the health of the host and the onset of disease. Influences such as diet, food preferences, and sanitation play crucial roles in microbiota composition. The oral cavity is where the digestive tract directly communicates with the outside. Stable temperature and humidity provide optimal growth environments for many bacteria. However, the oral cavity is a unique environment that is susceptible to pH changes, salinity, food nutrients, and external pathogens. Recent studies have emphasized the importance of the oral microbiota, as changes in bacterial composition and balance could contribute to the development of systemic diseases. This review focuses on saliva, IgA, and fermented foods because they play critical roles in maintaining the oral bacterial environment by regulating its composition and balance. More attention should be paid to the oral microbiota and its regulatory factors in oral and systemic health.
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Affiliation(s)
- Daisuke Nagakubo
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
| | - Yuichiro Kaibori
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, 7-2-1 Kamiohno, Himeji 670-8524, Hyogo, Japan
- Laboratory of Analytics for Biomolecules, Faculty of Pharmaceutical Science, Setsunan University, 45-1 Nagaotoge-cho, Hirakata-shi 573-0101, Osaka, Japan;
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10
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Cao Y, Lu H, Xu W, Zhong M. Gut microbiota and Sjögren's syndrome: a two-sample Mendelian randomization study. Front Immunol 2023; 14:1187906. [PMID: 37383227 PMCID: PMC10299808 DOI: 10.3389/fimmu.2023.1187906] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/02/2023] [Indexed: 06/30/2023] Open
Abstract
Background The link between the gut microbiota (GM) and Sjögren's Syndrome (SS) is well-established and apparent. Whether GM is causally associated with SS is uncertain. Methods The MiBioGen consortium's biggest available genome-wide association study (GWAS) meta-analysis (n=13,266) was used as the basis for a two-sample Mendelian randomization study (TSMR). The causal relationship between GM and SS was investigated using the inverse variance weighted, MR-Egger, weighted median, weighted model, MR-PRESSO, and simple model methods. In order to measure the heterogeneity of instrumental variables (IVs), Cochran's Q statistics were utilized. Results The results showed that genus Fusicatenibacter (odds ratio (OR) = 1.418, 95% confidence interval (CI), 1.072-1.874, P = 0.0143) and genus Ruminiclostridium9 (OR = 1.677, 95% CI, 1.050-2.678, P = 0.0306) were positively correlated with the risk of SS and family Porphyromonadaceae (OR = 0.651, 95% CI, 0.427-0.994, P = 0.0466), genus Subdoligranulum (OR = 0.685, 95% CI, 0.497-0.945, P = 0.0211), genus Butyricicoccus (OR = 0.674, 95% CI, 0.470-0.967, P = 0.0319) and genus Lachnospiraceae (OR = 0.750, 95% CI, 0.585-0.961, P = 0.0229) were negatively correlated with SS risk using the inverse variance weighted (IVW) technique. Furthermore, four GM related genes: ARAP3, NMUR1, TEC and SIRPD were significant causally with SS after FDR correction (FDR<0.05). Conclusions This study provides evidence for either positive or negative causal effects of GM composition and its related genes on SS risk. We want to provide novel approaches for continued GM and SS-related research and therapy by elucidating the genetic relationship between GM and SS.
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Affiliation(s)
- Yu Cao
- School of Medicine, Xiamen University, Xiamen, China
| | - Hao Lu
- School of Medicine, Xiamen University, Xiamen, China
| | - Wangzi Xu
- School of Medicine, Xiamen University, Xiamen, China
| | - Ming Zhong
- Department of Oral Histopathology, School and Hospital of Stomatology, China Medical University, Liaoning Province Key Laboratory of Oral Disease, Shenyang, Liaoning, China
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11
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Mosaddad SA, Mahootchi P, Safari S, Rahimi H, Aghili SS. Interactions between systemic diseases and oral microbiota shifts in the aging community: A narrative review. J Basic Microbiol 2023. [PMID: 37173818 DOI: 10.1002/jobm.202300141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/23/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023]
Abstract
As a gateway to general health and a diverse microbial habitat, the oral cavity is colonized by numerous microorganisms such as bacteria, fungi, viruses, and archaea. Oral microbiota plays an essential role in preserving oral health. Besides, the oral cavity also significantly contributes to systemic health. Physiological aging influences all body systems, including the oral microbial inhabitants. The cited effect can cause diseases by forming dysbiotic communities. Since it has been demonstrated that microbial dysbiosis could disturb the symbiosis state between the host and the resident microorganism, shifting the condition toward a more pathogenic one, this study investigated how the oral microbial shifts in aging could associate with the development or progression of systemic diseases in older adults. The current study focused on the interactions between variations in the oral microbiome and prevalent diseases in older adults, including diabetes mellitus, Sjögren's syndrome, rheumatoid arthritis, pulmonary diseases, cardiovascular diseases, oral candidiasis, Parkinson's disease, Alzheimer's disease, and glaucoma. Underlying diseases can dynamically modify the oral ecology and the composition of its resident oral microbiome. Clinical, experimental, and epidemiological research suggests the associations of systemic disorders with bacteremia and inflammation after oral microbial changes in older adults.
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Affiliation(s)
- Seyed Ali Mosaddad
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Pegah Mahootchi
- Department of Oral and Maxillofacial Diseases, School of Dentistry, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran
| | - Sajedeh Safari
- Department of Prosthodontics, Islamic Azad University, Tehran, Iran
| | - Hussein Rahimi
- Student Research Committee, School of Dentistry, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Seyedeh Sara Aghili
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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12
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Wu CM, Wheeler KM, Cárcamo-Oyarce G, Aoki K, McShane A, Datta SS, Mark Welch JL, Tiemeyer M, Griffen AL, Ribbeck K. Mucin glycans drive oral microbial community composition and function. NPJ Biofilms Microbiomes 2023; 9:11. [PMID: 36959210 PMCID: PMC10036478 DOI: 10.1038/s41522-023-00378-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 02/20/2023] [Indexed: 03/25/2023] Open
Abstract
Human microbiome composition is closely tied to health, but how the host manages its microbial inhabitants remains unclear. One important, but understudied, factor is the natural host environment: mucus, which contains gel-forming glycoproteins (mucins) that display hundreds of glycan structures with potential regulatory function. Leveraging a tractable culture-based system to study how mucins influence oral microbial communities, we found that mucin glycans enable the coexistence of diverse microbes, while resisting disease-associated compositional shifts. Mucins from tissues with unique glycosylation differentially tuned microbial composition, as did isolated mucin glycan libraries, uncovering the importance of specific glycan patterns in microbiome modulation. We found that mucins shape microbial communities in several ways: serving as nutrients to support metabolic diversity, organizing spatial structure through reduced aggregation, and possibly limiting antagonism between competing taxa. Overall, this work identifies mucin glycans as a natural host mechanism and potential therapeutic intervention to maintain healthy microbial communities.
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Affiliation(s)
- Chloe M Wu
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kelsey M Wheeler
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Microbiology Graduate Program, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Gerardo Cárcamo-Oyarce
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kazuhiro Aoki
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Abigail McShane
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sujit S Datta
- Chemical and Biological Engineering, Princeton University, Princeton, NJ, USA
| | | | - Michael Tiemeyer
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Ann L Griffen
- Department of Dentistry, Nationwide Children's Hospital, Columbus, OH, USA
- Divisions of Biosciences and Pediatric Dentistry, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - Katharina Ribbeck
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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13
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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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14
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Impact of high altitude on composition and functional profiling of oral microbiome in Indian male population. Sci Rep 2023; 13:4038. [PMID: 36899053 PMCID: PMC10006418 DOI: 10.1038/s41598-023-30963-8] [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: 09/12/2022] [Accepted: 03/03/2023] [Indexed: 03/12/2023] Open
Abstract
The oral cavity of human contains bacteria that are critical for maintaining the homeostasis of the body. External stressors such as high altitude (HA) and low oxygen affect the human gut, skin and oral microbiome. However, compared to the human gut and skin microbiome, studies demonstrating the impact of altitude on human oral microbiota are currently scarce. Alterations in the oral microbiome have been reported to be associated with various periodontal diseases. In light of the increased occurrence of HA oral health related problems, the effect of HA on the oral salivary microbiome was investigated. We conducted a pilot study in 16 male subjects at two different heights i.e., H1 (210 m) and H2 (4420 m). Total of 31 saliva samples,16 at H1 and 15 at H2 were analyzed by utilizing the 16S rRNA high-throughput sequencing, to explore the relationship between the HA environment and salivary microbiota. The preliminary results suggesting that, the most abundant microbiome at the phylum level are: Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria. Interestingly, 11 genera were identified at the both heights with different relative abundances. In addition, the salivary microbiome was more diverse at H1 compared to H2 as demonstrated by decreased alpha diversity. Further, predicted functional results indicate that microbial metabolic profiles significantly decreased at H2 as compared to H1, including two major metabolic pathways involving carbohydrates, and amino acids. Our findings show that HA induces shifts in the composition and structure of human oral microbiota which can affect host health homeostasis.
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15
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High-Throughput Sequencing of Oral Microbiota in Candida Carriage Sjögren's Syndrome Patients: A Pilot Cross-Sectional Study. J Clin Med 2023; 12:jcm12041559. [PMID: 36836095 PMCID: PMC9964208 DOI: 10.3390/jcm12041559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND This study sought to characterize the saliva microbiota of Candida carriage Sjögren's syndrome (SS) patients compared to oral candidiasis and healthy patients by high-throughput sequencing. METHODS Fifteen patients were included, with five Candida carriage SS patients (decayed, missing, and filled teeth (DMFT) score 22), five oral candidiasis patients (DMFT score 17), and five caries active healthy patients (DMFT score 14). Bacterial 16S rRNA was extracted from rinsed whole saliva. PCR amplification generated DNA amplicons of the V3-V4 hypervariable region, which were sequenced on an Illumina HiSeq 2500 sequencing platform and compared and aligned to the SILVA database. Taxonomy abundance and community structure diversity was analyzed using Mothur software v1.40.0. RESULTS A total of 1016/1298/1085 operational taxonomic units (OTUs) were obtained from SS patients/oral candidiasis patient/healthy patients. Treponema, Lactobacillus, Streptococcus, Selenomonas, and Veillonella were the primary genera in the three groups. The most abundant significantly mutative taxonomy (OTU001) was Veillonella parvula. Microbial diversity (alpha diversity and beta diversity) was significantly increased in SS patients. ANOSIM analyses revealed significantly different microbial compositional heterogeneity in SS patients compared to oral candidiasis and healthy patients. CONCLUSION Microbial dysbiosis differs significantly in SS patients independent of oral Candida carriage and DMFT.
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16
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Orliaguet M, Fong SB, Le Pottier L, Meuric V, Boisramé S, Bonnaure-Mallet M, Pers JO. Tolerance to intraoral biofilms and their effectiveness in improving mouth dryness and modifying oral microbiota in patients with primary Sjögren's syndrome: "Predelfi study". Front Microbiol 2023; 14:1071683. [PMID: 37293235 PMCID: PMC10245914 DOI: 10.3389/fmicb.2023.1071683] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 01/10/2023] [Indexed: 09/29/2023] Open
Abstract
INTRODUCTION Primary Sjögren's syndrome (pSS) is a systemic autoimmune disease characterized by exocrine gland dysfunction. No therapeutic strategy is sufficient on its own for the management of dry mouth and therapeutic innovations are required. METHODS This Predelfi study was a single-center, prospective, comparative, randomized, double-blind, cross-over controlled study with the primary objective of assessing the tolerance to and effectiveness of two adhesive biofilms (containing prebiotics and, sodium alginate, respectively) in patients with pSS and hyposialia (#NCT04206826 in ClinicalTrials.gov). Secondary objectives were to obtain initial data regarding the clinical effectiveness of such biofilms in the improvement of signs and symptoms related to dry mouth and potential changes in the oral microbiota. Ten pSS patients with pSS were included (9 females and 1 male) with a mean age of 58.1 ± 14.0 years. RESULTS AND DISCUSSION Tolerance to the prebiotic and sodium alginate biofilms was assessed by the patients (visual analog scale [VAS] score 66.7 and 87.6, respectively) and the practitioner (90 and 100, respectively). The absolute changes in the VAS scores at the start and end of each treatment period highlighted an improvement in mouth dryness for the sodium alginate versus the prebiotic biofilm. The VAS scores for other parameters (mouth burning sensation; taste alteration; chewing; swallowing and speech difficulties) remained globally comparable between the two groups. Unstimulated salivary flow showed no changes regardless of the biofilm used. Regarding the oral microbiota, the sodium alginate biofilm increased the abundance of the Treponema genus, whereas the use of the prebiotic biofilm as the first treatment increased the abundance of the genera Veillonella and Prevotella. Nevertheless, the prebiotic biofilm appeared to stimulate "milder" genera with regard to periodontal infections. Furthermore, pre-treatment with the prebiotic biofilm prevented the emergence of the Treponema genus induced by subsequent treatment with the sodium alginate biofilm, suggesting a potential protective effect.
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Affiliation(s)
| | | | | | | | | | | | - Jacques-Olivier Pers
- Univ Brest, CHU de Brest, Brest, France
- LBAI, U1227, Univ Brest, Inserm, Brest, France
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17
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Kaibori Y, Yamashita K, Nagakubo D. The altered production and property of saliva induced by ingesting fermented food ingredients affect the oral microbiome composition in mice. Biosci Biotechnol Biochem 2023; 87:228-235. [PMID: 36398739 DOI: 10.1093/bbb/zbac186] [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: 10/24/2022] [Accepted: 11/09/2022] [Indexed: 11/19/2022]
Abstract
Oral functions are diverse and critical to human health. Therefore, insufficient secretion or poor quality of saliva, which is secreted into the oral cavity and plays various roles, could have a crucial influence on the oral microenvironment and be associated with systemic disease development. Here, we investigated the effects of food ingredients on saliva quantity and quality, including fermented ones. Through the in vitro submandibular glands' organ culture analyses, we found that "Yomo gyutto," fermented Japanese mugwort (Artemisia princeps), altered the expression of aquaporin-5, a water channel protein. We also found that Yomo gyutto increased saliva volume, along with the amount of α-amylase in mice, and caused changes in the oral microbiome composition of mice. These results suggested that by ingesting Yomo gyutto, we could directly and effectively manipulate the quantity and quality of saliva secreted from the salivary glands, potentially altering the oral microbiome composition for individual health.
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Affiliation(s)
- Yuichiro Kaibori
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | - Kazuhiko Yamashita
- Functional Food Ingredients R&D Division, Yaegaki Biotechnology, Inc., Himeji, Hyogo, Japan
| | - Daisuke Nagakubo
- Division of Health and Hygienic Sciences, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
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18
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Murugkar P, Dimise E, Stewart E, Viala SN, Clardy J, Dewhirst FE, Lewis K. Identification of a growth factor required for culturing specific fastidious oral bacteria. J Oral Microbiol 2023; 15:2143651. [DOI: 10.1080/20002297.2022.2143651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Pallavi Murugkar
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, 134 Mugar Hall, 360 Huntington Ave 02115, Boston, MA, USA
| | - Eric Dimise
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School 02115, Boston, MA, USA
| | - Eric Stewart
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, 134 Mugar Hall, 360 Huntington Ave 02115, Boston, MA, USA
| | - Stéphane N. Viala
- Department of Microbiology, the Forsyth Institute, Cambridge, MA, USA
| | - Jon Clardy
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School 02115, Boston, MA, USA
| | - Floyd E. Dewhirst
- Department of Microbiology, the Forsyth Institute, Cambridge, MA, USA
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Kim Lewis
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, 134 Mugar Hall, 360 Huntington Ave 02115, Boston, MA, USA
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19
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Deng Z, Guo K, Cao F, Fan T, Liu B, Shi M, Liu Y, Ma Z. Altered dental plaque microbiota correlated with salivary inflammation in female methamphetamine users. Front Immunol 2022; 13:999879. [PMID: 36524108 PMCID: PMC9745308 DOI: 10.3389/fimmu.2022.999879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 10/04/2022] [Indexed: 12/03/2022] Open
Abstract
Poor oral health is the most immediate and overlooked hazard of methamphetamine abuse in humans. Previous studies have reported methamphetamine-associated alterations in saliva microbiota, but the cause of methamphetamine-induced alterations in the oral microenvironment remains unclear. The present study aimed to investigate the alterations in dental plaque microbiota in methamphetamine users, and to explore their relationship with local immune inflammation in the oral cavity. This may provide new ideas on the development of methamphetamine-related oral microenvironment changes. Questionnaires and samples were obtained from 30 female methamphetamine users and 15 sex- and age-matched healthy controls. Microbial profiles of supragingival dental plaque were analyzed using 16S rRNA gene sequencing. Inflammatory factors in saliva were measured using enzyme-linked immunosorbent assay. Methamphetamine users had worse oral self-evaluation. Compared with healthy controls, methamphetamine users showed no differences in oral dental plaque microbial diversity but exhibited differences in the relative abundance of several microbial taxa. At the phylum level, a higher abundance of Proteobacteria and a lower abundance of Firmicutes were detected in methamphetamine users. Moreover, function prediction using the MetaCyc database showed that 33 pathways were significantly upregulated in methamphetamine users; Only the glycolytic (Pyrococcus) pathway was enriched in the C group. Importantly, salivary inflammatory factors showed complex significant associations with bacterial genera in methamphetamine users. Specifically, the genus Neisseria was positively correlated with IL-17 levels in saliva, and both were high in methamphetamine users. In contrast, the genus Streptococcus, with a lower abundance, was positively correlated with lower IL-10 levels. Overall, This study is the first to provide evidence for a link between altered dental plaque microbiota and salivary inflammation in methamphetamine users. Further elucidation of the interactions between methamphetamine use and oral microenvironment would be beneficial for appropriate interventions to improve oral health.
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20
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Characteristics of gut microbiota in patients with primary Sjögren’s syndrome in Northern China. PLoS One 2022; 17:e0277270. [DOI: 10.1371/journal.pone.0277270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 10/24/2022] [Indexed: 11/12/2022] Open
Abstract
This study analyzes and compares the structure and diversity of gut microbiota in patients with primary Sjögren’s syndrome (pSS) in Northern China to healthy individuals to identify clinical features associated with dysbiosis. We included 60 Chinese pSS patients and 50 age- and gender-matched healthy controls. DNA was extracted from stool samples and subjected to 16S ribosomal RNA gene analysis (V3-V4) for intestinal dysbiosis. In addition, patients were examined for laboratory and serological pSS features. A Spearman’s correlation analysis was performed to assess correlations between individual bacteria taxa and clinical characteristics. The alpha-diversity (Chao1 and Shannon Index) and beta-diversity (unweighted UniFrac distances) of the gut microbiota differed significantly between pSS patients and healthy controls. Further analysis showed that several gut opportunistic pathogens (Bacteroides, Megamonas, and Veillonella) were significantly more abundant in pSS patients and positively correlated with their clinical indicators. In contrast, some probiotic genera (Collinsella, unidentified_Ruminococcaceae, Romboutsia, and Dorea) were significantly decreased in pSS patients and negatively correlated with their clinical indicators. Therefore, pSS patients in Northern China showed a dysbiotic intestinal microbiome enriched for potentially pathogenic genera that might be associated with autoimmune disease.
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21
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Au S, Baraniya D, Dao J, Awan SB, Alvarez J, Sklar S, Chen T, Puri S, Al-Hebshi NN. Prolonged mask wearing does not alter the oral microbiome, salivary flow rate or gingival health status – A pilot study. Front Cell Infect Microbiol 2022; 12:1039811. [PMID: 36439237 PMCID: PMC9684305 DOI: 10.3389/fcimb.2022.1039811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/24/2022] [Indexed: 11/11/2022] Open
Abstract
The COVID-19 pandemic has resulted in the widespread use of N95 respirators and surgical masks, with anecdotal reports among healthcare providers and the public of xerostomia, halitosis, and gingivitis, a consortium of symptoms colloquially termed “mask mouth”. However, this has not been scientifically verified. The aim of this study was to assess changes in salivary flow rate, gingival health status and oral microbiome associated with prolonged mask use. A total of 25 dental students (mean age = 26.36 ± 1.58) were included in the study and evaluated at three time points: T1, at the end of at least 2 months of full-day mask wear (7.26 ± 1.56 hours/day); T2, at the end of a period of minimal mask use (1.13 ± 1.13 hours/day); and T3, at the end of 2-3 weeks of resuming full-day mask wear (6.93 ± 1.80 hours/day). Unstimulated whole saliva (UWS) flow rate, xerostomia (on a quantitative scale of 10), gingival index (GI) and plaque index (PI) were assessed at each time point. The salivary microbiome was characterized using 16S rRNA gene sequencing. Overall, UWS flow rates were normal (mean of 0.679 ml/min) and xerostomia, PI and GI scores were low (Mean of 3.11, 0.33 and 0.69, respectively) with no significant differences as a result of prolonged mask wearing. Similarly, there were no significant microbial changes at a false discovery rate (FDR) ≤ 0.05. However, some trends were identified using a nominal p-value cut-off of ≤ 0.01, namely Gemella sanguinis, Streptococcus sp. Oral taxon 066 and Oral taxon 058 were associated with prolonged mask wear. Trends were also seen by gender, race and age, for example an increase in P. gingivalis and P. intermedia with age. In conclusion, we found no evidence that prolonged mask wear adversely affects oral health. The findings support that the oral microbiome of healthy individuals is resilient.
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Affiliation(s)
- Sheralyn Au
- Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Divyashri Baraniya
- Oral Microbiome Research Laboratory, Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Jason Dao
- Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Shehar Bano Awan
- Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Jenelle Alvarez
- Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Shari Sklar
- Department of Restorative Dentistry, Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Tsute Chen
- Department of Microbiology, Forsyth Institute, Cambridge, MA, United States
| | - Sumant Puri
- Oral Microbiome Research Laboratory, Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
| | - Nezar N. Al-Hebshi
- Oral Microbiome Research Laboratory, Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA, United States
- *Correspondence: Nezar N. Al-Hebshi,
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22
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Kim HJ, Shim KW, Na HS, Kim SY, Yu Y, Song Y, Lee HA, Lee JY, Lee JH, Chung J. Assessing the effect of antihypertensives on plaque microbiota in patients with periodontitis and hypertension using 16S rRNA sequencing; a cross-sectional study. J Periodontol 2022; 94:529-541. [PMID: 35989670 DOI: 10.1002/jper.22-0204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/12/2022] [Accepted: 08/16/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Periodontitis is initiated or accelerated by dysbiosis of oral microorganisms. When hypertension is accompanied in periodontitis patients, the changes of oral microbiota occur. Since there are no reports of antihypertensives, we assessed the effect of antihypertensives on the oral microbial profiles of patients with periodontitis. METHODS This study involved 95 participants divided into two groups: those with periodontitis and hypertension (P_HT) and those with periodontitis and taking medications for hypertension (P_mHT). Plaque samples were collected from the buccal, supragingival, and subgingival sites of the oral cavities of these patients. DNA was extracted, and the V3-V4 region of the 16S ribosomal RNA was sequenced and analyzed. RESULTS The P_HT and P_mHT groups were similar with respect to the alpha- and beta-diversity as well as the dominant phyla and genera but differed in the relative abundance of bacterial species (85 species). In the P_mHT group, the relative abundance of major periodontal pathogens was greatly increased. In particular, Tannerella forsythia, Treponema denticola, and Fretibacterium fastidiosum increased nearly three times the LDA score in the supragingival plaque. Also, there was an increase in relative abundance of Prevotella spp. associated with periodontitis and nitrate reduction, which was also evident in the supragingival plaque. CONCLUSIONS These findings indicate that antihypertensives induce dysbiotic changes in the oral microbiota of patients with periodontitis which are associated with increases in the relative abundance of periodontal pathogens. Therefore, more active periodontal treatment and supportive periodontal therapy are required in patients taking antihypertensives. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hyun-Joo Kim
- Department of Periodontology, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Korea.,Department of Periodontology, Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Korea
| | - Kyu-Won Shim
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Korea
| | - Hee Sam Na
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea.,Oral Genomics Research Center, Pusan National University, Yangsan, Korea
| | - Si Yeong Kim
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea.,Oral Genomics Research Center, Pusan National University, Yangsan, Korea
| | - Yeuni Yu
- Biomedical research institute, School of Medicine, Pusan National University, Yangsan, Korea
| | - Yuri Song
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea.,Oral Genomics Research Center, Pusan National University, Yangsan, Korea
| | - Hyun Ah Lee
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea.,Oral Genomics Research Center, Pusan National University, Yangsan, Korea
| | - Ju Youn Lee
- Department of Periodontology, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Korea.,Department of Periodontology, Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Korea
| | - Jae-Hyung Lee
- Department of Oral Microbiology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Jin Chung
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Korea.,Oral Genomics Research Center, Pusan National University, Yangsan, Korea
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Choudhry HS, Hosseini S, Choudhry HS, Fatahzadeh M, Khianey R, Dastjerdi MH. Updates in diagnostics, treatments, and correlations between oral and ocular manifestations of Sjogren's syndrome. Ocul Surf 2022; 26:75-87. [PMID: 35961534 DOI: 10.1016/j.jtos.2022.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 07/03/2022] [Accepted: 08/03/2022] [Indexed: 02/07/2023]
Abstract
Sjogren's syndrome (SS) is characterized as an autoimmune disorder targeting secretory glands, including the lacrimal and salivary glands, causing dry eye and dry mouth predominantly in women over the age of 40. In this review, we summarize recent advancements in SS diagnostics, treatments, and our understanding of correlations between oral and ocular manifestations of SS. Google Scholar and PubMed databases were utilized to search peer-reviewed papers since 2016 on SS diagnosis, treatment, and correlations between oral and ocular manifestations. For diagnostics, we discuss the updated SS classification criteria by the American College of Rheumatology/European League Against Rheumatism (ACR/EULAR), new biomarkers, and compare studies of current diagnostic methods with alternative technologies. For treatments, we discuss topical, systemic, and surgical treatment developments in the management of oral and ocular symptoms of SS as there is still no cure for the disorder. Finally, we report studies that directly suggest correlations between the ocular surface disease and oral disease in SS, as well as shared abnormalities in the microbiome and cytokine expression that may be correlated. We conclude by stating limitations to our review as well as paths moving forward. Elucidating correlations between oral and ocular manifestations may be the key to furthering our understanding of SS pathogenesis as well as defining new standards for diagnosis and treatment.
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Affiliation(s)
- Hassaam S Choudhry
- Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, 90 Bergen Street, Newark, NJ, 07103, USA
| | - Shayan Hosseini
- Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, 90 Bergen Street, Newark, NJ, 07103, USA
| | - Hannaan S Choudhry
- Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, 90 Bergen Street, Newark, NJ, 07103, USA
| | - Mahnaz Fatahzadeh
- Department of Diagnostic Science, Division of Oral Medicine, Rutgers School of Dental Medicine, 110 Bergen Street, Newark, NJ, 07103, USA
| | - Reena Khianey
- Department of Medicine, Rheumatology, Rutgers New Jersey Medical School, 90 Bergen Street, Newark, NJ, 07103, USA
| | - Mohammad H Dastjerdi
- Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, 90 Bergen Street, Newark, NJ, 07103, USA.
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24
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Deng C, Xiao Q, Fei Y. A Glimpse Into the Microbiome of Sjögren’s Syndrome. Front Immunol 2022; 13:918619. [PMID: 35911741 PMCID: PMC9329934 DOI: 10.3389/fimmu.2022.918619] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Sjögren’s syndrome (SS) is a common chronic systemic autoimmune disease and its main characteristic is lymphoid infiltration of the exocrine glands, particularly the salivary and lacrimal glands, leading to sicca symptoms of the mouth and eyes. Growing evidence has shown that SS is also characterized by microbial perturbations like other autoimmune diseases. Significant alterations in diversity, composition, and function of the microbiota were observed in SS. The dysbiosis of the microbiome correlates with worse symptoms and higher disease severity, suggesting that dysbiosis may be of great importance in the pathogenesis of SS. In this review, we provide a general view of recent studies describing the microbiota alterations of SS, the possible pathways that may cause microbiota dysbiosis to trigger SS, and the existence of the gut-ocular/gut-oral axis in SS.
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25
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Manasson J, Blank RB, Scher JU. Response to: ‘Microbiome in Sjögren’s syndrome: here we are’ by van der Meulen et al. Ann Rheum Dis 2022; 81:e115. [DOI: 10.1136/annrheumdis-2020-218327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 06/25/2020] [Indexed: 11/03/2022]
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26
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Gao L, Cheng Z, Zhu F, Bi C, Shi Q, Chen X. The Oral Microbiome and Its Role in Systemic Autoimmune Diseases: A Systematic Review of Big Data Analysis. Front Big Data 2022; 5:927520. [PMID: 35844967 PMCID: PMC9277227 DOI: 10.3389/fdata.2022.927520] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 05/23/2022] [Indexed: 12/30/2022] Open
Abstract
Introduction Despite decades of research, systemic autoimmune diseases (SADs) continue to be a major global health concern and the etiology of these diseases is still not clear. To date, with the development of high-throughput techniques, increasing evidence indicated a key role of oral microbiome in the pathogenesis of SADs, and the alterations of oral microbiome may contribute to the disease emergence or evolution. This review is to present the latest knowledge on the relationship between the oral microbiome and SADs, focusing on the multiomics data generated from a large set of samples. Methodology By searching the PubMed and Embase databases, studies that investigated the oral microbiome of SADs, including systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and Sjögren's syndrome (SS), were systematically reviewed according to the PRISMA guidelines. Results One thousand and thirty-eight studies were found, and 25 studies were included: three referred to SLE, 12 referred to RA, nine referred to SS, and one to both SLE and SS. The 16S rRNA sequencing was the most frequent technique used. HOMD was the most common database aligned to and QIIME was the most popular pipeline for downstream analysis. Alterations in bacterial composition and population have been found in the oral samples of patients with SAD compared with the healthy controls. Results regarding candidate pathogens were not always in accordance, but Selenomonas and Veillonella were found significantly increased in three SADs, and Streptococcus was significantly decreased in the SADs compared with controls. Conclusion A large amount of sequencing data was collected from patients with SAD and controls in this systematic review. Oral microbial dysbiosis had been identified in these SADs, although the dysbiosis features were different among studies. There was a lack of standardized study methodology for each study from the inclusion criteria, sample type, sequencing platform, and referred database to downstream analysis pipeline and cutoff. Besides the genomics, transcriptomics, proteomics, and metabolomics technology should be used to investigate the oral microbiome of patients with SADs and also the at-risk individuals of disease development, which may provide us with a better understanding of the etiology of SADs and promote the development of the novel therapies.
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Affiliation(s)
- Lu Gao
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Zijian Cheng
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Fudong Zhu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Chunsheng Bi
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Qiongling Shi
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Xiaoyan Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center for Oral Diseases, Hangzhou, China
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- *Correspondence: Xiaoyan Chen
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Chahal G, Quintana-Hayashi MP, Gaytán MO, Benktander J, Padra M, King SJ, Linden SK. Streptococcus oralis Employs Multiple Mechanisms of Salivary Mucin Binding That Differ Between Strains. Front Cell Infect Microbiol 2022; 12:889711. [PMID: 35782137 PMCID: PMC9247193 DOI: 10.3389/fcimb.2022.889711] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/20/2022] [Indexed: 11/13/2022] Open
Abstract
Streptococcus oralis is an oral commensal and opportunistic pathogen that can enter the bloodstream and cause bacteremia and infective endocarditis. Here, we investigated the mechanisms of S. oralis binding to oral mucins using clinical isolates, isogenic mutants and glycoconjugates. S. oralis bound to both MUC5B and MUC7, with a higher level of binding to MUC7. Mass spectrometry identified 128 glycans on MUC5B, MUC7 and the salivary agglutinin (SAG). MUC7/SAG contained a higher relative abundance of Lewis type structures, including Lewis b/y, sialyl-Lewis a/x and α2,3-linked sialic acid, compared to MUC5B. S. oralis subsp. oralis binding to MUC5B and MUC7/SAG was inhibited by Lewis b and Lacto-N-tetraose glycoconjugates. In addition, S. oralis binding to MUC7/SAG was inhibited by sialyl Lewis x. Binding was not inhibited by Lacto-N-fucopentaose, H type 2 and Lewis x conjugates. These data suggest that three distinct carbohydrate binding specificities are involved in S. oralis subsp. oralis binding to oral mucins and that the mechanisms of binding MUC5B and MUC7 differ. Efficient binding of S. oralis subsp. oralis to MUC5B and MUC7 required the gene encoding sortase A, suggesting that the adhesin(s) are LPXTG-containing surface protein(s). Further investigation demonstrated that one of these adhesins is the sialic acid binding protein AsaA.
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Affiliation(s)
- Gurdeep Chahal
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | | | - Meztlli O. Gaytán
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children´s Hospital, Columbus, OH, United States
| | - John Benktander
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | - Medea Padra
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | - Samantha J. King
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children´s Hospital, Columbus, OH, United States
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States
- Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
- *Correspondence: Sara K. Linden, ; Samantha J. King,
| | - Sara K. Linden
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
- *Correspondence: Sara K. Linden, ; Samantha J. King,
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28
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The relationship between ocular and oral dryness in a cohort from the 65-year-old population in Norway. Sci Rep 2022; 12:9805. [PMID: 35697848 PMCID: PMC9191758 DOI: 10.1038/s41598-022-13985-6] [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: 01/15/2021] [Accepted: 05/31/2022] [Indexed: 12/02/2022] Open
Abstract
In the present study, the relationship between dry eyes and dry mouth was explored in 150 65-year-old subjects randomly selected from the general population in Oslo, Norway. The number of drugs, including xerogenic drugs, and current and previous systemic diseases were recorded. Ocular parameters recorded were the McMonnies Dry Eye Questionnaire, the Ocular Surface Disease Index, the Schirmer I Test, tear film break-up time and ocular surface staining. The oral parameters were xerostomia frequency, Summated Xerostomia Inventory, Clinical Oral Dryness Score, and unstimulated and stimulated whole saliva. The participants with current or previous systemic diseases had significantly more ocular and oral symptoms and significantly more oral clinical findings than the participants without a history of disease. Moreover, correlation and factor analyses demonstrated an association between subjective ocular and oral parameters. A significant correlation between the total number of drugs and the presence of ocular and oral symptoms was also noted. When the participants were categorized based on their ocular symptoms, poorer values were found for the oral parameters among the participants more troubled with dry eyes. The results in the present study call for increased awareness and an interdisciplinary approach in matters related to dry eyes and dry mouth.
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29
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Könönen E, Fteita D, Gursoy UK, Gursoy M. Prevotella species as oral residents and infectious agents with potential impact on systemic conditions. J Oral Microbiol 2022; 14:2079814. [DOI: 10.1080/20002297.2022.2079814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Eija Könönen
- Institute of Dentistry, University of Turku, Turku, Finland
| | - Dareen Fteita
- Institute of Dentistry, University of Turku, Turku, Finland
| | - Ulvi K. Gursoy
- Institute of Dentistry, University of Turku, Turku, Finland
| | - Mervi Gursoy
- Institute of Dentistry, University of Turku, Turku, Finland
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30
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Jung W, Jang S. Oral Microbiome Research on Oral Lichen Planus: Current Findings and Perspectives. BIOLOGY 2022; 11:biology11050723. [PMID: 35625451 PMCID: PMC9138428 DOI: 10.3390/biology11050723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/05/2022] [Accepted: 05/07/2022] [Indexed: 12/12/2022]
Abstract
Simple Summary Oral lichen planus is a disease of the oral mucosa, which frequently affects women aged 40 years or older. Though the T cell-mediated immune response is involved in the development of oral lichen planus, attempts to identify a microorganism that causes the disease have been unsuccessful. Recent studies on the development of oral lichen planus are focusing on the role of the oral microbiome, which includes oral microbiota and their products, and the host environment. The role of the human microbiome in various diseases has been identified and regulating the microbiome is becoming important in personalized medicine. In this review, we summarized current findings on the role of the oral microbiome in the development of oral lichen planus. The homeostasis of the oral microbiome is disrupted in patients, and functional analysis of oral microbiota and oral mucosa implies that pathways involved in defense against bacterial infection and in the inflammatory response are activated in the oral lichen planus-associated oral microbiome. Though the lack of studies to date makes it difficult to conclude, further studies on the oral microbiome associated with the disease will enable a holistic understanding of the role of the oral microbiome in the development of oral lichen planus and developing a personalized therapy for the disease. Abstract Oral lichen planus (OLP) is a chronic inflammatory disease of the oral mucosa with an unknown etiology. The role of oral microbes in the development of OLP has gained researchers’ interest. In this review, we summarized the findings of studies focused on the relationship between OLP and oral microbiome, which includes the composition of oral microbiota, molecules produced by oral microbiota or the host, and the oral environment of the host. According to the studies, the oral microbial community in OLP patients undergoes dysbiosis, and the microbial dysbiosis in OLP patients is more prominent in the buccal mucosa than in the saliva. However, no same microorganisms have been suggested to be associated with OLP in multiple investigations, implying that the functional aspects of the oral microbiota are more important in OLP development than the composition of the oral microbiota. According to studies on host factors that make up the oral environment, signal pathways involved in cellular processes, such as keratinization, inflammation, and T cell responses are triggered in OLP. Studies on the functional aspects of the oral microbiota, as well as interactions between the host and the oral microbiota, are still lacking, and more research is required.
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Affiliation(s)
- Won Jung
- Department of Oral Medicine, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju-si 54907, Korea;
- Research Institute of Clinical Medicine, Jeonbuk National University, Jeonju-si 54907, Korea
- Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju-si 54907, Korea
| | - Sungil Jang
- Department of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju-si 54907, Korea
- Correspondence: ; Tel.: +82-63-270-4027
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Bacali C, Vulturar R, Buduru S, Cozma A, Fodor A, Chiș A, Lucaciu O, Damian L, Moldovan ML. Oral Microbiome: Getting to Know and Befriend Neighbors, a Biological Approach. Biomedicines 2022; 10:biomedicines10030671. [PMID: 35327473 PMCID: PMC8945538 DOI: 10.3390/biomedicines10030671] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2023] Open
Abstract
The oral microbiome, forming a biofilm that covers the oral structures, contains a high number of microorganisms. Biofilm formation starts from the salivary pellicle that allows bacterial adhesion–colonization–proliferation, co-aggregation and biofilm maturation in a complex microbial community. There is a constant bidirectional crosstalk between human host and its oral microbiome. The paper presents the fundamentals regarding the oral microbiome and its relationship to modulator factors, oral and systemic health. The modern studies of oral microorganisms and relationships with the host benefits are based on genomics, transcriptomics, proteomics and metabolomics. Pharmaceuticals such as antimicrobials, prebiotics, probiotics, surface active or abrasive agents and plant-derived ingredients may influence the oral microbiome. Many studies found associations between oral dysbiosis and systemic disorders, including autoimmune diseases, cardiovascular, diabetes, cancers and neurodegenerative disorders. We outline the general and individual factors influencing the host–microbial balance and the possibility to use the analysis of the oral microbiome in prevention, diagnosis and treatment in personalized medicine. Future therapies should take in account the restoration of the normal symbiotic relation with the oral microbiome.
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Affiliation(s)
- Cecilia Bacali
- Department of Prosthodontics and Dental Materials, “Iuliu Hatieganu” University of Medicine and Pharmacy, 32 Clinicilor St., 400006 Cluj-Napoca, Romania; (C.B.); (S.B.)
| | - Romana Vulturar
- Department of Molecular Sciences, “Iuliu Hațieganu” University of Medicine and Pharmacy Cluj-Napoca, 6 Pasteur St., 400349 Cluj-Napoca, Romania;
- Cognitive Neuroscience Laboratory, University Babes-Bolyai, 30 Fântânele St., 400294 Cluj-Napoca, Romania
- Correspondence:
| | - Smaranda Buduru
- Department of Prosthodontics and Dental Materials, “Iuliu Hatieganu” University of Medicine and Pharmacy, 32 Clinicilor St., 400006 Cluj-Napoca, Romania; (C.B.); (S.B.)
| | - Angela Cozma
- 4th Medical Department, University of Medicine and Pharmacy “Iuliu Hatieganu” Cluj-Napoca, 18 Republicii St., 400015 Cluj-Napoca, Romania;
| | - Adriana Fodor
- Clinical Center of Diabetes, Nutrition and Metabolic Diseases, “Iuliu Hatieganu” University of Medicine and Pharmacy, 2-4 Clinicilor St., 400012 Cluj-Napoca, Romania;
| | - Adina Chiș
- Department of Molecular Sciences, “Iuliu Hațieganu” University of Medicine and Pharmacy Cluj-Napoca, 6 Pasteur St., 400349 Cluj-Napoca, Romania;
- Cognitive Neuroscience Laboratory, University Babes-Bolyai, 30 Fântânele St., 400294 Cluj-Napoca, Romania
| | - Ondine Lucaciu
- Department of Oral Health, University of Medicine and Pharmacy “Iuliu Hatieganu”, 400012 Cluj-Napoca, Romania;
| | - Laura Damian
- Department of Rheumatology, Emergency Clinical County Hospital Cluj, Centre for Rare Autoimmune and Autoinflammatory Diseases, 2-4 Clinicilor St., 400006 Cluj-Napoca, Romania;
- CMI Reumatologie Dr. Damian, 6-8 Petru Maior St., 400002 Cluj-Napoca, Romania
| | - Mirela Liliana Moldovan
- Department of Dermopharmacy and Cosmetics, Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 12, I. Creanga St., 400010 Cluj-Napoca, Romania;
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32
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Cheng X, He F, Si M, Sun P, Chen Q. Effects of Antibiotic Use on Saliva Antibody Content and Oral Microbiota in Sprague Dawley Rats. Front Cell Infect Microbiol 2022; 12:721691. [PMID: 35174102 PMCID: PMC8843035 DOI: 10.3389/fcimb.2022.721691] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 01/11/2022] [Indexed: 12/14/2022] Open
Abstract
Antibiotics are often used to treat systemic diseases not associated with the oral cavity. This application of antibiotics may affect the healthy oral microbiota community, as it destroys the balance between specific bacterial populations throughout the ecosystem and may lead to dysbacteriosis. We hypothesized that the effects on antibiotics on oral microbiota regulation and function would affect antibody content in saliva, depending on the antibiotic type. To address this, a total of 24 Sprague Dawley rats (divided into 4 cages, 6 per pen) were administered amoxicillin (AMX), spiramycin (SP), metronidazole (MTZ), or water (control) daily for 14 days (gavage). After treatment was completed, high-throughput sequencing of 16S rRNA genes was used to determine changes in the composition, metabolic function, and diversity of oral microbiota in the rats. Enzyme-linked immunosorbent assay was used to detect antibodies in saliva, including SIgA, IgG, and IgM. Results showed that AMX, MTZ, and SP significantly affected oral microbiota composition, diversity, and metabolic function in rats. AMX induced substantial changes in the rat salivary antibody concentrations. At the genus level, the relative abundance of Rothia and Haemophilus was higher in the AMX group than in the other groups. In conclusion, antibiotics-induced changes in oral microbiota populations may be associated with changes in salivary antibody concentrations. However, the specific interaction mechanisms remain unknown, and it is still unclear whether significant changes in the oral microbiota cause changes in salivary antibody concentrations or vice versa.
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Affiliation(s)
- Xi Cheng
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- Department of Stomatology, People’s Hospital of Leshan, Leshan, China
| | - Fuming He
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Misi Si
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Ping Sun
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- *Correspondence: Ping Sun, ; Qianming Chen,
| | - Qianming Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- *Correspondence: Ping Sun, ; Qianming Chen,
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A Narrative Review on Oral and Periodontal Bacteria Microbiota Photobiomodulation, through Visible and Near-Infrared Light: From the Origins to Modern Therapies. Int J Mol Sci 2022; 23:ijms23031372. [PMID: 35163296 PMCID: PMC8836253 DOI: 10.3390/ijms23031372] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 12/13/2022] Open
Abstract
Photobiomodulation (PBM) consists of a photon energy transfer to the cell, employing non-ionizing light sources belonging to the visible and infrared spectrum. PBM acts on some intrinsic properties of molecules, energizing them through specific light wavelengths. During the evolution of life, semiconducting minerals were energized by sun radiation. The molecules that followed became photoacceptors and were expressed into the first proto-cells and prokaryote membranes. Afterward, the components of the mitochondria electron transport chain influenced the eukaryotic cell physiology. Therefore, although many organisms have not utilized light as an energy source, many of the molecules involved in their physiology have retained their primordial photoacceptive properties. Thus, in this review, we discuss how PBM can affect the oral microbiota through photo-energization and the non-thermal effect of light on photoacceptors (i.e., cytochromes, flavins, and iron-proteins). Sometimes, the interaction of photons with pigments of an endogenous nature is followed by thermal or photodynamic-like effects. However, the preliminary data do not allow determining reliable therapies but stress the need for further knowledge on light-bacteria interactions and microbiota management in the health and illness of patients through PBM.
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Chang SH, Park SH, Cho ML, Choi Y. Why Should We Consider Potential Roles of Oral Bacteria in the Pathogenesis of Sjögren Syndrome? Immune Netw 2022; 22:e32. [PMID: 36081525 PMCID: PMC9433196 DOI: 10.4110/in.2022.22.e32] [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: 04/23/2022] [Revised: 06/16/2022] [Accepted: 06/22/2022] [Indexed: 12/01/2022] Open
Abstract
Sjögren syndrome (SS) is a chronic autoimmune disorder that primarily targets the salivary and lacrimal glands. The pathology of these exocrine glands is characterized by periductal focal lymphocytic infiltrates, and both T cell-mediated tissue injury and autoantibodies that interfere with the secretion process underlie glandular hypofunction. In addition to these adaptive mechanisms, multiple innate immune pathways are dysregulated, particularly in the salivary gland epithelium. Our understanding of the pathogenetic mechanisms of SS has substantially improved during the past decade. In contrast to viral infection, bacterial infection has never been considered in the pathogenesis of SS. In this review, oral dysbiosis associated with SS and evidence for bacterial infection of the salivary glands in SS were reviewed. In addition, the potential contributions of bacterial infection to innate activation of ductal epithelial cells, plasmacytoid dendritic cells, and B cells and to the breach of tolerance via bystander activation of autoreactive T cells and molecular mimicry were discussed. The added roles of bacteria may extend our understanding of the pathogenetic mechanisms and therapeutic approaches for this autoimmune exocrinopathy.
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Affiliation(s)
- Sung-Ho Chang
- Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Sung-Hwan Park
- Divison of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Mi-La Cho
- Department of Medical Life Science, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Youngnim Choi
- Department of Immunology and Molecular Microbiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
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Schwartz JL, Peña N, Kawar N, Zhang A, Callahan N, Robles SJ, Griebel A, Adami GR. Old age and other factors associated with salivary microbiome variation. BMC Oral Health 2021; 21:490. [PMID: 34602059 PMCID: PMC8489047 DOI: 10.1186/s12903-021-01828-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 08/27/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Many factors can contribute to the exact makeup of the salivary microbiome. Differences in the oral microbiome occur with old age, which may be due to oral conditions and diseases associated with old age, such as edentulism, as well as other unknown causes. METHODS The salivary microbiome was sampled in patients from a large urban clinic. For all subjects age, gender, periodontal status, caries status, presence of edentulism, medications, and tobacco usage were recorded. Multifactor analysis was used to study variation in salivary microbiome profiles linked to these factors. RESULTS In the population sampled, there were significantly higher numbers of edentulous subjects, and increased levels of polypharmacy found with aging. Large differences in alpha diversity and beta diversity of the salivary microbiome in the old age group were largely linked to edentulism. However, multivariable analysis revealed, even after adjusting for differences in edentulism, polypharmacy, tobacco usage, periodontal disease, caries level, and gender, that old age itself was associated with lower levels of taxa Porphyromonas endodontalis, Alloprevotella tannerae, Filifactor alocis, Treponema, Lautropia Mirabilis and Pseudopropionibacterium sp._HMT_194. Surprisingly, of these taxa, most were ones known to reside on or near tooth surfaces. CONCLUSIONS Another factor or factors beyond edentulism, polypharmacy and periodontal disease play a role in the differences seen in oral microbiome with old age. The nature of this factor(s) is not known.
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Affiliation(s)
- Joel L Schwartz
- Department of Oral Medicine and Diagnostics, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL, 60612, USA
| | - Natalia Peña
- Department of Oral Medicine and Diagnostics, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL, 60612, USA
| | - Nadia Kawar
- Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Andrew Zhang
- Department of Oral Medicine and Diagnostics, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL, 60612, USA
| | - Nicholas Callahan
- Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Steven J Robles
- Department of Oral Medicine and Diagnostics, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL, 60612, USA
| | - Andrew Griebel
- Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA
| | - Guy R Adami
- Department of Oral Medicine and Diagnostics, College of Dentistry, University of Illinois at Chicago, 801 South Paulina Street, Chicago, IL, 60612, USA.
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Herrala M, Turunen S, Hanhineva K, Lehtonen M, Mikkonen JJW, Seitsalo H, Lappalainen R, Tjäderhane L, Niemelä RK, Salo T, Myllymaa S, Kullaa AM, Kärkkäinen O. Low-Dose Doxycycline Treatment Normalizes Levels of Some Salivary Metabolites Associated with Oral Microbiota in Patients with Primary Sjögren's Syndrome. Metabolites 2021; 11:metabo11090595. [PMID: 34564411 PMCID: PMC8470364 DOI: 10.3390/metabo11090595] [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: 06/29/2021] [Revised: 08/26/2021] [Accepted: 08/28/2021] [Indexed: 12/14/2022] Open
Abstract
Saliva is a complex oral fluid, and plays a major role in oral health. Primary Sjögren’s syndrome (pSS), as an autoimmune disease that typically causes hyposalivation. In the present study, salivary metabolites were studied from stimulated saliva samples (n = 15) of female patients with pSS in a group treated with low-dose doxycycline (LDD), saliva samples (n = 10) of non-treated female patients with pSS, and saliva samples (n = 14) of healthy age-matched females as controls. Saliva samples were analyzed with liquid chromatography mass spectrometry (LC-MS) based on the non-targeted metabolomics method. The saliva metabolite profile differed between pSS patients and the healthy control (HC). In the pSS patients, the LDD treatment normalized saliva levels of several metabolites, including tyrosine glutamine dipeptide, phenylalanine isoleucine dipeptide, valine leucine dipeptide, phenylalanine, pantothenic acid (vitamin B5), urocanic acid, and salivary lipid cholesteryl palmitic acid (CE 16:0), to levels seen in the saliva samples of the HC. In conclusion, the data showed that pSS is associated with an altered saliva metabolite profile compared to the HC and that the LLD treatment normalized levels of several metabolites associated with dysbiosis of oral microbiota in pSS patients. The role of the saliva metabolome in pSS pathology needs to be further studied to clarify if saliva metabolite levels can be used to predict or monitor the progress and treatment of pSS.
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Affiliation(s)
- Maria Herrala
- Research Group of Oral Health Sciences, Faculty of Medicine, Oulu University Hospital, University of Oulu, 90220 Oulu, Finland;
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Medical Research Center Oulu, Oulu University Hospital, University of Oulu, 90014 Oulu, Finland;
- Correspondence: ; Fax: +358-8-537-5560
| | - Soile Turunen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
| | - Kati Hanhineva
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70211 Kuopio, Finland;
- Department of Life Technologies, Food Chemistry and Food Development Unit, University of Turku, 20014 Turku, Finland
| | - Marko Lehtonen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
| | - Jopi J. W. Mikkonen
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
| | | | - Reijo Lappalainen
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
| | - Leo Tjäderhane
- Medical Research Center Oulu, Oulu University Hospital, University of Oulu, 90014 Oulu, Finland;
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
| | - Raija K. Niemelä
- Department of Rheumatology, Oulu University Hospital, 90220 Oulu, Finland;
| | - Tuula Salo
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland;
- Translational Immunology Research Program (TRIMM), University of Helsinki, 00014 Helsinki, Finland
- Department of Pathology, Faculty of Medicine, University of Helsinki, Helsinki University Hospital, 00014 Helsinki, Finland
- Cancer and Translational Medicine Research Unit, University of Oulu, 90014 Oulu, Finland
| | - Sami Myllymaa
- Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland; (R.L.); (S.M.)
- Diagnostic Imaging Center, Kuopio University Hospital, 70029 Kuopio, Finland
| | - Arja M. Kullaa
- Research Group of Oral Health Sciences, Faculty of Medicine, Oulu University Hospital, University of Oulu, 90220 Oulu, Finland;
- Institute of Dentistry, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland;
- Educational Dental Clinic, Kuopio University Hospital, 90220 Kuopio, Finland
| | - Olli Kärkkäinen
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland; (S.T.); (M.L.); (O.K.)
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Oral Microbiota Identifies Patients in Early Onset Rheumatoid Arthritis. Microorganisms 2021; 9:microorganisms9081657. [PMID: 34442739 PMCID: PMC8400434 DOI: 10.3390/microorganisms9081657] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/18/2021] [Accepted: 07/30/2021] [Indexed: 02/07/2023] Open
Abstract
Rheumatoid arthritis (RA) is the most common autoimmune inflammatory disease, and single periodontitis-associated bacteria have been suggested in disease manifestation. Here, the oral microbiota was characterized in relation to the early onset of RA (eRA) taking periodontal status into consideration. 16S rRNA gene amplicon sequencing of saliva bacterial DNA from 61 eRA patients without disease-modifying anti-rheumatic drugs and 59 matched controls was performed. Taxonomic classification at 98.5% was conducted against the Human Oral Microbiome Database, microbiota functions were predicted using PICRUSt, and periodontal status linked from the Swedish quality register for clinically assessed caries and periodontitis. The participants were classified into three distinct microbiota-based cluster groups with cluster allocation differences by eRA status. Independently of periodontal status, eRA patients had enriched levels of Prevotella pleuritidis, Treponema denticola, Porphyromonas endodontalis and Filifactor alocis species and in the Porphyromonas and Fusobacterium genera and functions linked to ornithine metabolism, glucosylceramidase, beta-lactamase resistance, biphenyl degradation, fatty acid metabolism and 17-beta-estradiol-17-dehydrogenase metabolism. The results support a deviating oral microbiota composition already in eRA patients compared with healthy controls and highlight a panel of oral bacteria that may be useful in eRA risk assessment in both periodontally healthy and diseased persons.
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Doaré E, Héry-Arnaud G, Devauchelle-Pensec V, Alegria GC. Healthy Patients Are Not the Best Controls for Microbiome-Based Clinical Studies: Example of Sjögren's Syndrome in a Systematic Review. Front Immunol 2021; 12:699011. [PMID: 34394092 PMCID: PMC8358393 DOI: 10.3389/fimmu.2021.699011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/13/2021] [Indexed: 01/03/2023] Open
Abstract
Introduction It has been hypothesized that gut and oral dysbiosis may contribute to the development of primary Sjögren's syndrome (pSS). The aim of this systematic review was to assemble available data regarding the oral and gut microbiota in pSS and to compare them to data from healthy individuals and patients with dry symptoms without a diagnosis of Sjögren's syndrome or lupus disease to identify dysbiosis and discuss the results. Methodology Using the PRISMA guidelines, we systematically reviewed studies that compared the oral and gut microbiota of Sjögren's patients and controls. The PubMed database and Google Scholar were searched. Results Two-hundred and eighty-nine studies were found, and 18 studies were included: 13 referred to the oral microbiota, 4 referred to the gut microbiota, and 1 referred to both anatomical sites. The most frequent controls were healthy volunteers and patients with sicca symptoms. The most common analysis method used was 16S-targeted metagenomics. The results were mostly heterogeneous, and the results regarding diversity were not always in accordance. Dysbiosis in pSS was not confirmed, and reduced salivary secretion seems to explain more microbial changes than the underlying disease. Conclusion These heterogeneous results might be explained by the lack of a standardized methodology at each step of the process and highlight the need for guidelines. Our review provides evidence that sicca patients seem to be more relevant than healthy subjects as a control group.
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Affiliation(s)
- Elise Doaré
- Rheumatology Department, Reference Centre of Rare Autoimmune Diseases, Cavale Blanche Hospital and Brest University, INSERM UMR 1227, Brest, France
| | - Geneviève Héry-Arnaud
- UMR1078, Génétique, Génomique Fonctionnelle Et Biotechnologies, INSERM, Université de Brest, EFS, IBSAM, Brest, France.,Centre Brestois d'Analyse du Microbiote, Hôpital La Cavale Blanche, CHRU de Brest, Brest, France
| | - Valérie Devauchelle-Pensec
- Rheumatology Department, Reference Centre of Rare Autoimmune Diseases, Cavale Blanche Hospital and Brest University, INSERM UMR 1227, Brest, France
| | - Guillermo Carvajal Alegria
- Rheumatology Department, Reference Centre of Rare Autoimmune Diseases, Cavale Blanche Hospital and Brest University, INSERM UMR 1227, Brest, France
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Chen H, Li Q, Li M, Liu S, Yao C, Wang Z, Zhao Z, Liu P, Yang F, Li X, Wang J, Zeng Y, Tong X. Microbial characteristics across different tongue coating types in a healthy population. J Oral Microbiol 2021; 13:1946316. [PMID: 34367522 PMCID: PMC8317956 DOI: 10.1080/20002297.2021.1946316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background The physical appearance of tongue coatings is vital for traditional Chinese medicine (TCM) to diagnose health and disease status. The microbiota of different tongue coatings could also influence coating formation and be further associated with specific diseases. Previous studies have focused on bacteria from different tongue coatings in the context of specific diseases, but the normal variations in healthy individuals remain unknown.Aim: We examined the tongue microbiota by metagenomics in 94 healthy individuals classified into eight different tongue types.Results: The overall composition of the tongue coating microbiome is not drastically different among different coating types, similar to the findings of previous studies in healthy populations. Further analysis revealed microbiota characteristics of each coating type, and many of the key bacteria are reported to be implicated in diseases. Moreover, further inclusion of diabetic patients revealed disease-specific enrichment of Capnocytophaga, even though the same tongue coatings were studied.Conclusions: This work revealed the characteristic compositions of distinctive tongue coatings in a healthy population, which serves as a basis for understanding the tongue coating formation mechanism and provides a valuable reference to further investigate disease-specific tongue coating bacterial markers.
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Affiliation(s)
- Hairong Chen
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Qingwei Li
- Departments of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Min Li
- Departments of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Sheng Liu
- Departments of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chensi Yao
- Departments of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zixiong Wang
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhuoya Zhao
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Ping Liu
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Fan Yang
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xinjian Li
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Jun Wang
- CAS Key Laboratory of Pathogenic Microbiology & Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Yixin Zeng
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaolin Tong
- Departments of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Progress in Oral Microbiome Related to Oral and Systemic Diseases: An Update. Diagnostics (Basel) 2021; 11:diagnostics11071283. [PMID: 34359364 PMCID: PMC8306157 DOI: 10.3390/diagnostics11071283] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/09/2021] [Accepted: 07/14/2021] [Indexed: 02/07/2023] Open
Abstract
The human oral microbiome refers to an ecological community of symbiotic and pathogenic microorganisms found in the oral cavity. The oral cavity is an environment that provides various biological niches, such as the teeth, tongue, and oral mucosa. The oral cavity is the gateway between the external environment and the human body, maintaining oral homeostasis, protecting the mouth, and preventing disease. On the flip side, the oral microbiome also plays an important role in the triggering, development, and progression of oral and systemic diseases. In recent years, disease diagnosis through the analysis of the human oral microbiome has been realized with the recent development of innovative detection technology and is overwhelmingly promising compared to the previous era. It has been found that patients with oral and systemic diseases have variations in their oral microbiome compared to normal subjects. This narrative review provides insight into the pathophysiological role that the oral microbiome plays in influencing oral and systemic diseases and furthers the knowledge related to the oral microbiome produced over the past 30 years. A wide range of updates were provided with the latest knowledge of the oral microbiome to help researchers and clinicians in both academic and clinical aspects. The microbial community information can be utilized in non-invasive diagnosis and can help to develop a new paradigm in precision medicine, which will benefit human health in the era of post-metagenomics.
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Bellando-Randone S, Russo E, Venerito V, Matucci-Cerinic M, Iannone F, Tangaro S, Amedei A. Exploring the Oral Microbiome in Rheumatic Diseases, State of Art and Future Prospective in Personalized Medicine with an AI Approach. J Pers Med 2021; 11:625. [PMID: 34209167 PMCID: PMC8306274 DOI: 10.3390/jpm11070625] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/11/2021] [Accepted: 06/28/2021] [Indexed: 12/25/2022] Open
Abstract
The oral microbiome is receiving growing interest from the scientific community, as the mouth is the gateway for numerous potential etiopathogenetic factors in different diseases. In addition, the progression of niches from the mouth to the gut, defined as "oral-gut microbiome axis", affects several pathologies, as rheumatic diseases. Notably, rheumatic disorders (RDs) are conditions causing chronic, often intermittent pain affecting the joints or connective tissue. In this review, we examine evidence which supports a role for the oral microbiome in the etiology and progression of various RDs, including rheumatoid arthritis (RA), Sjogren's syndrome (SS), and systemic lupus erythematosus (SLE). In addition, we address the most recent studies endorsing the oral microbiome as promising diagnostic biomarkers for RDs. Lastly, we introduce the concepts of artificial intelligence (AI), in particular, machine learning (ML) and their general application for understanding the link between oral microbiota and rheumatic diseases, speculating the application of a possible AI approach-based that can be applied to personalized medicine in the future.
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Affiliation(s)
- Silvia Bellando-Randone
- Department of Clinical and Experimental Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; (S.B.-R.); (E.R.); (M.M.-C.)
| | - Edda Russo
- Department of Clinical and Experimental Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; (S.B.-R.); (E.R.); (M.M.-C.)
| | - Vincenzo Venerito
- Rheumatology Unit, Department of Emergency and Organ Transplantations, University of Bari “Aldo Moro”, 70121 Bari, Italy; (V.V.); (F.I.)
| | - Marco Matucci-Cerinic
- Department of Clinical and Experimental Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; (S.B.-R.); (E.R.); (M.M.-C.)
- Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | - Florenzo Iannone
- Rheumatology Unit, Department of Emergency and Organ Transplantations, University of Bari “Aldo Moro”, 70121 Bari, Italy; (V.V.); (F.I.)
| | - Sabina Tangaro
- Dipartimento Interateneo di Fisica “M. Merlin”, Istituto Nazionale di Fisica Nucleare, Sezione di Bari, 70121 Bari, Italy;
| | - Amedeo Amedei
- Department of Clinical and Experimental Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; (S.B.-R.); (E.R.); (M.M.-C.)
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MAIT Cells and Microbiota in Multiple Sclerosis and Other Autoimmune Diseases. Microorganisms 2021; 9:microorganisms9061132. [PMID: 34074025 PMCID: PMC8225125 DOI: 10.3390/microorganisms9061132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/12/2022] Open
Abstract
The functions of mucosal-associated invariant T (MAIT) cells in homeostatic conditions include the interaction with the microbiota and its products, the protection of body barriers, and the mounting of a tissue-repair response to injuries or infections. Dysfunction of MAIT cells and dysbiosis occur in common chronic diseases of inflammatory, metabolic, and tumor nature. This review is aimed at analyzing the changes of MAIT cells, as well as of the microbiota, in multiple sclerosis and other autoimmune disorders. Common features of dysbiosis in these conditions are the reduced richness of microbial species and the unbalance between pro-inflammatory and immune regulatory components of the gut microbiota. The literature concerning MAIT cells in these disorders is rather complex, and sometimes not consistent. In multiple sclerosis and other autoimmune conditions, several studies have been done, or are in progress, to find correlations between intestinal permeability, dysbiosis, MAIT cell responses, and clinical biomarkers in treated and treatment-naïve patients. The final aims are to explain what activates MAIT cells in diseases not primarily infective, which interactions with the microbiota are potentially pathogenic, and their dynamics related to disease course and disease-modifying treatments.
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In Vitro Coliform Resistance to Bioactive Compounds in Urinary Infection, Assessed in a Lab Catheterization Model. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11094315] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Bioactive compounds and phenolic compounds are viable alternatives to antibiotics in recurrent urinary tract infections. This study aimed to use a natural functional product, based on the bioactive compounds’ composition, to inhibit the uropathogenic strains of Escherichia coli. E.coli ATCC 25922 was used to characterize the IVCM (new in vitro catheterization model). As support for reducing bacterial proliferation, the cytotoxicity against a strain of Candida albicans was also determined (over 75% at 1 mg/mL). The results were correlated with the analysis of the distribution of biologically active compounds (trans-ferulic acid-268.44 ± 0.001 mg/100 g extract and an equal quantity of Trans-p-coumaric acid and rosmarinic acid). A pronounced inhibitory effect against the uropathogenic strain E. coli 317 (4 log copy no./mL after 72 h) was determined. The results showed a targeted response to the product for tested bacterial strains. The importance of research resulted from the easy and fast characterization of the functional product with antimicrobial effect against uropathogenic strains of E. coli. This study demonstrated that the proposed in vitro model was a valuable tool for assessing urinary tract infections with E. coli.
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Verstappen GM, Pringle S, Bootsma H, Kroese FGM. Epithelial-immune cell interplay in primary Sjögren syndrome salivary gland pathogenesis. Nat Rev Rheumatol 2021; 17:333-348. [PMID: 33911236 PMCID: PMC8081003 DOI: 10.1038/s41584-021-00605-2] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2021] [Indexed: 02/08/2023]
Abstract
In primary Sjögren syndrome (pSS), the function of the salivary glands is often considerably reduced. Multiple innate immune pathways are likely dysregulated in the salivary gland epithelium in pSS, including the nuclear factor-κB pathway, the inflammasome and interferon signalling. The ductal cells of the salivary gland in pSS are characteristically surrounded by a CD4+ T cell-rich and B cell-rich infiltrate, implying a degree of communication between epithelial cells and immune cells. B cell infiltrates within the ducts can initiate the development of lymphoepithelial lesions, including basal ductal cell hyperplasia. Vice versa, the epithelium provides chronic activation signals to the glandular B cell fraction. This continuous stimulation might ultimately drive the development of mucosa-associated lymphoid tissue lymphoma. This Review discusses changes in the cells of the salivary gland epithelium in pSS (including acinar, ductal and progenitor cells), and the proposed interplay of these cells with environmental stimuli and the immune system. Current therapeutic options are insufficient to address both lymphocytic infiltration and salivary gland dysfunction. Successful rescue of salivary gland function in pSS will probably demand a multimodal therapeutic approach and an appreciation of the complicity of the salivary gland epithelium in the development of pSS.
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Affiliation(s)
- Gwenny M Verstappen
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Sarah Pringle
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Hendrika Bootsma
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.
| | - Frans G M Kroese
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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45
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Lenartova M, Tesinska B, Janatova T, Hrebicek O, Mysak J, Janata J, Najmanova L. The Oral Microbiome in Periodontal Health. Front Cell Infect Microbiol 2021; 11:629723. [PMID: 33828997 PMCID: PMC8019927 DOI: 10.3389/fcimb.2021.629723] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/02/2021] [Indexed: 12/14/2022] Open
Abstract
The estimation of oral microbiome (OM) taxonomic composition in periodontally healthy individuals can often be biased because the clinically periodontally healthy subjects for evaluation can already experience dysbiosis. Usually, they are included just based on the absence of clinical signs of periodontitis. Additionally, the age of subjects is used to be higher to correspond well with tested groups of patients with chronic periodontitis, a disorder typically associated with aging. However, the dysbiosis of the OM precedes the clinical signs of the disease by many months or even years. The absence of periodontal pockets thus does not necessarily mean also good periodontal health and the obtained image of "healthy OM" can be distorted.To overcome this bias, we taxonomically characterized the OM in almost a hundred young students of dentistry with precise oral hygiene and no signs of periodontal disease. We compared the results with the OM composition of older periodontally healthy individuals and also a group of patients with severe periodontitis (aggressive periodontitis according to former classification system). The clustering analysis revealed not only two compact clearly separated clusters corresponding to each state of health, but also a group of samples forming an overlap between both well-pronounced states. Additionally, in the cluster of periodontally healthy samples, few outliers with atypical OM and two major stomatotypes could be distinguished, differing in the prevalence and relative abundance of two main bacterial genera: Streptococcus and Veillonella. We hypothesize that the two stomatotypes could represent the microbial succession from periodontal health to starting dysbiosis. The old and young periodontally healthy subjects do not cluster separately but a trend of the OM in older subjects to periodontitis is visible. Several bacterial genera were identified to be typically more abundant in older periodontally healthy subjects.
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Affiliation(s)
- Magdalena Lenartova
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia.,Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Barbora Tesinska
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia.,Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia
| | - Tatjana Janatova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czechia.,Institute of Dental Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Ondrej Hrebicek
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia
| | - Jaroslav Mysak
- Institute of Dental Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Jiri Janata
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia.,Institute of Microbiology v. v. i., BIOCEV, Academy of Sciences of the Czech Republic, Vestec, Czechia
| | - Lucie Najmanova
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czechia.,Institute of Microbiology v. v. i., BIOCEV, Academy of Sciences of the Czech Republic, Vestec, Czechia
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46
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Head D, Marsh PD, Devine DA, Tenuta LMA. In Silico Modeling of Hyposalivation and Biofilm Dysbiosis in Root Caries. J Dent Res 2021; 100:977-982. [PMID: 33749365 PMCID: PMC8293727 DOI: 10.1177/00220345211000655] [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: 11/17/2022] Open
Abstract
Root caries progression is aggravated by hyposalivation, which can accelerate the conversion of a dental biofilm from having a symbiotic microbial relationship with the host (predominance of nonaciduric species) to a dysbiotic one (dominated by aciduric species). Using a mathematical model previously employed to investigate factors associated with biofilm dysbiosis, we systematically explored the deleterious effect of hyposalivation on the composition of the biofilm and the risk of root dentin demineralization. By varying the clearance half-times of sugar (i.e., readily fermented dietary carbohydrates), we simulated hyposalivation and investigated its effect on 1) the time that the biofilm pH spends below the minimum for dentin or enamel demineralization and 2) the conversion of the biofilm from a symbiotic to dysbiotic composition. The effect of increasing sugar clearance half-times on the time that the biofilm pH is below the threshold for demineralization was more pronounced for dentin than for enamel (e.g., increasing the clearance half-time from 2 to 6 min doubled the time that the biofilm pH was below the threshold for dentin demineralization). The effect on biofilm composition assessed at 50 d showed that the conversion from a symbiotic to a dysbiotic biofilm happened around a frequency of 6 sugar intakes per day when the clearance half-time was 2 min but only 3 sugar intakes per day when the clearance half-time was 6 min. Taken together, the results confirm the profound effect that prolonged sugar clearance has on the dynamics of dental biofilm composition and the subsequent risk of root caries. This in silico model should be applied to study how interventions that alter salivary clearance rates or modify biofilm pH can affect clinical conditions such as root caries.
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Affiliation(s)
- D Head
- School of Computing, University of Leeds, Leeds, UK
| | - P D Marsh
- Division of Oral Biology, School of Dentistry, Wellcome Trust Brenner Building, University of Leeds, St. James University Hospital, Leeds, UK
| | - D A Devine
- Division of Oral Biology, School of Dentistry, Wellcome Trust Brenner Building, University of Leeds, St. James University Hospital, Leeds, UK
| | - L M A Tenuta
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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47
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Hori Y, Kondo Y, Nodai T, Masaki C, Ono K, Hosokawa R. Xerostomia aggravates ligation-induced peri-implantitis: A preclinical in vivo study. Clin Oral Implants Res 2021; 32:581-589. [PMID: 33629453 DOI: 10.1111/clr.13727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/17/2020] [Accepted: 02/17/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Previous studies have indicated that xerostomia is a critical factor affecting periodontitis; nonetheless, it is controversial whether xerostomia impairs peri-implant tissue. The objective of this experimental study was to evaluate the effect of xerostomia on the peri-implant hard and soft tissues in the rat model. MATERIALS AND METHODS Implants were placed in bilateral maxillae of male Wistar rats. The animals underwent submandibular and sublingual gland resection on both sides (DRY group) or sham operation (CTR group). Silk ligatures were placed around one side of abutments, which were randomly selected in each animal. The effects of xerostomia were assessed using micro-CT, histological analysis, real-time PCR, and 16S rRNA-based metagenomic analysis. RESULTS Ligation with silk thread caused bone resorption around implants. Although xerostomia itself did not induce bone resorption, it significantly enhanced silk ligature-mediated bone resorption around implants. Histological analysis and real-time PCR indicated that xerostomia induced inflammation and osteoclastogenesis around implants with silk ligatures. Furthermore, it altered the microbiota of the plaque on the silk thread around implants. CONCLUSION Xerostomia accelerates mucosal inflammation and osteoclastogenesis, which aggravates bone resorption around implants.
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Affiliation(s)
- Yusuke Hori
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Yusuke Kondo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Tomotaka Nodai
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Chihiro Masaki
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Kentaro Ono
- Division of Physiology, Kyushu Dental University, Kitakyushu, Japan
| | - Ryuji Hosokawa
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
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48
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Tseng YC, Yang HY, Lin WT, Chang CB, Chien HC, Wang HP, Chen CM, Wang JT, Li C, Wu SF, Hsieh SC. Salivary dysbiosis in Sjögren's syndrome and a commensal-mediated immunomodulatory effect of salivary gland epithelial cells. NPJ Biofilms Microbiomes 2021; 7:21. [PMID: 33707430 PMCID: PMC7952914 DOI: 10.1038/s41522-021-00192-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 01/28/2021] [Indexed: 12/17/2022] Open
Abstract
Salivary gland epithelial cells (SGECs) have been implicated in the pathogenesis of Sjögren's syndrome due to aberrant antigen-presentation function. This study examined the hypothesis that oral dysbiosis modulates the antigen-presentation function of SGECs, which regulates CD4 T cell proliferation in primary Sjögren's syndrome (pSS). Saliva samples from 8 pSS patients and 16 healthy subjects were analyzed for bacterial 16S ribosomal DNA. As a result, 39 differentially abundant taxa were identified. Among them, the phylum Proteobacteria comprised 21 taxa, and this phylum was mostly enriched in the healthy controls. The proteobacterium Haemophilus parainfluenzae was enriched in the healthy controls, with the greatest effect size at the species level. Treatment of A253 cells in vitro with H. parainfluenzae upregulated PD-L1 expression, and H. parainfluenzae-pretreated A253 cells suppressed CD4 T cell proliferation. The suppression was partially reversed by PD-L1 blockade. Among low-grade xerostomia patients, salivary abundance of H. parainfluenzae decreased in pSS patients compared to that in non-pSS sicca patients. Our findings suggest that H. parainfluenzae may be an immunomodulatory commensal bacterium in pSS.
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Affiliation(s)
- Yu-Chao Tseng
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan.,Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan.,Center for Innovative Research on Aging Society (CIRAS), National Chung Cheng University, Chiayi, Taiwan.,Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Hsin-Yi Yang
- Department of Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Wei-Ting Lin
- Department Oral and Maxillofacial Surgery, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Chia-Bin Chang
- Department of Urology, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, Taiwan
| | - Hsiu-Chuan Chien
- Department of Laboratory Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Hon-Pin Wang
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Chun-Ming Chen
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Jann-Tay Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin Li
- Department of Biomedical Sciences, Institute of Molecular Biology, and Institute of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan.
| | - Shu-Fen Wu
- Center for Innovative Research on Aging Society (CIRAS), National Chung Cheng University, Chiayi, Taiwan. .,Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan. .,Department of Biomedical Sciences, Institute of Molecular Biology, and Institute of Biomedical Sciences, National Chung Cheng University, Chiayi, Taiwan.
| | - Song-Chou Hsieh
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
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49
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Cai Y, Juszczak HM, Cope EK, Goldberg AN. The Microbiome in Obstructive Sleep Apnea. Sleep 2021; 44:6168416. [PMID: 33705556 DOI: 10.1093/sleep/zsab061] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/06/2021] [Indexed: 12/25/2022] Open
Abstract
Recent evidence has highlighted important associations between obstructive sleep apnea and the microbiome. Although the intricacies of the pathophysiologic mechanisms are not well understood, available evidence suggests a bidirectional relationship between OSA and microbiota composition. Sleep fragmentation, intermittent hypoxia, and intermittent hypercapnia all play significant roles in altering the microbiome, and initial evidence has shown that alterations of the microbiota affect sleep patterns. Animal model evidence strongly supports the idea that the microbiome mediates disease states associated with OSA including hypertension, atherosclerosis, and obesity. The majority of evidence focuses on changes in the gut microbiome, which may result from OSA as well as contribute to sleep pattern changes, OSA-related CVD, and obesity. Meanwhile, a developing body of work suggests changes in the upper airway microbiome may be associated with OSA and periodontitis-related oral cavity microbiome changes may have significance in OSA-related CVD. Lastly, while evidence is limited, several studies suggest there may be a role for treatment of OSA and OSA-related comorbidities through alteration of the microbiome with probiotics, prebiotics, and microbiota transplantation. These early animal and human studies begin to characterize the interrelationships of the microbiome and OSA and may lead to new avenues for treatment.
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Affiliation(s)
- Yi Cai
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, USA
| | - Hailey M Juszczak
- School of Medicine, University of California, San Francisco, CA, USA
| | - Emily K Cope
- Center for Applied Microbiome Sciences, The Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - Andrew N Goldberg
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, CA, USA
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50
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Liu F, Liang T, Zhang Z, Liu L, Li J, Dong W, Zhang H, Bai S, Ma L, Kang L. Effects of altitude on human oral microbes. AMB Express 2021; 11:41. [PMID: 33677720 PMCID: PMC7936934 DOI: 10.1186/s13568-021-01200-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 02/24/2021] [Indexed: 12/15/2022] Open
Abstract
Human oral microbes play a vital role maintaining host metabolic homeostasis. The Qinghai-Tibet Plateau is mainly characterized by a high altitude, dry, cold, and hypoxic environment. The oral microbiota is subject to selective pressure from the plateau environment, which affects oral health. Only a few studies have focused on the characteristics of oral microbiota in high-altitude humans. We collected saliva samples from 167 Tibetans at four altitudes (2800 to 4500 m) in Tibet to explore the relationship between the high altitude environment and oral microbiota. We conducted a two (high- and ultra-high-altitude) group analysis based on altitude, and adopted the 16S rRNA strategy for high-throughput sequencing. The results show that the alpha diversity of the oral microbiota decreased with altitude, whereas beta diversity increased with altitude. A LEfSe analysis revealed that the oral microbial biomarker of the high-altitude group (< 3650 m) was Streptococcus, and the biomarker of the ultra-high-altitude group (> 4000 m) was Prevotella. The relative abundance of Prevotella increased with altitude, whereas the relative abundance of Streptococcus decreased with altitude. A network analysis showed that the microbial network structure was more compact and complex, and the interaction between the bacterial genera was more intense in the high altitude group. Gene function prediction results showed that the amino acid and vitamin metabolic pathways were upregulated in the ultra-high-altitude group. These result show that altitude is an important factor affecting the diversity and community structure of the human oral microbiota.
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