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Lu L, Li F, Gao Y, Kang S, Li J, Guo J. Microbiome in radiotherapy: an emerging approach to enhance treatment efficacy and reduce tissue injury. Mol Med 2024; 30:105. [PMID: 39030525 PMCID: PMC11264922 DOI: 10.1186/s10020-024-00873-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 07/08/2024] [Indexed: 07/21/2024] Open
Abstract
Radiotherapy is a widely used cancer treatment that utilizes powerful radiation to destroy cancer cells and shrink tumors. While radiation can be beneficial, it can also harm the healthy tissues surrounding the tumor. Recent research indicates that the microbiota, the collection of microorganisms in our body, may play a role in influencing the effectiveness and side effects of radiation therapy. Studies have shown that specific species of bacteria living in the stomach can influence the immune system's response to radiation, potentially increasing the effectiveness of treatment. Additionally, the microbiota may contribute to adverse effects like radiation-induced diarrhea. A potential strategy to enhance radiotherapy outcomes and capitalize on the microbiome involves using probiotics. Probiotics are living microorganisms that offer health benefits when consumed in sufficient quantities. Several studies have indicated that probiotics have the potential to alter the composition of the gut microbiota, resulting in an enhanced immune response to radiation therapy and consequently improving the efficacy of the treatment. It is important to note that radiation can disrupt the natural balance of gut bacteria, resulting in increased intestinal permeability and inflammatory conditions. These disruptions can lead to adverse effects such as diarrhea and damage to the intestinal lining. The emerging field of radiotherapy microbiome research offers a promising avenue for optimizing cancer treatment outcomes. This paper aims to provide an overview of the human microbiome and its role in augmenting radiation effectiveness while minimizing damage.
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Affiliation(s)
- Lina Lu
- School of Chemical Engineering, Northwest Minzu University, No.1, Northwest New Village, Lanzhou, Gansu, 730030, China.
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, Gansu, China.
- Gansu Provincial Biomass Function Composites Engineering Research Center, Lanzhou, Gansu, China.
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in, University of Gansu Province, Lanzhou, Gansu, China.
| | - Fengxiao Li
- Department of Pharmacy, the Affiliated Hospital of Qingdao University, Qingdao, China
| | | | - Shuhe Kang
- School of Chemical Engineering, Northwest Minzu University, No.1, Northwest New Village, Lanzhou, Gansu, 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, Gansu, China
- Gansu Provincial Biomass Function Composites Engineering Research Center, Lanzhou, Gansu, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in, University of Gansu Province, Lanzhou, Gansu, China
| | - Jia Li
- School of Chemical Engineering, Northwest Minzu University, No.1, Northwest New Village, Lanzhou, Gansu, 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, Gansu, China
- Gansu Provincial Biomass Function Composites Engineering Research Center, Lanzhou, Gansu, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in, University of Gansu Province, Lanzhou, Gansu, China
| | - Jinwang Guo
- School of Chemical Engineering, Northwest Minzu University, No.1, Northwest New Village, Lanzhou, Gansu, 730030, China
- Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Lanzhou, Gansu, China
- Gansu Provincial Biomass Function Composites Engineering Research Center, Lanzhou, Gansu, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in, University of Gansu Province, Lanzhou, Gansu, China
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Yang J, Yang L, Han Q, Zhang Y, Tao Z, Zhou Y, Zhang P, Wang R, Sun B, He J, Gao J. The dose limits of teeth protection for patients with nasopharyngeal carcinoma undergoing radiotherapy based on the early oral health-related quality of life. Open Med (Wars) 2023; 18:20230673. [PMID: 37016706 PMCID: PMC10066872 DOI: 10.1515/med-2023-0673] [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: 07/12/2022] [Revised: 01/15/2023] [Accepted: 02/02/2023] [Indexed: 04/06/2023] Open
Abstract
Radiation-related teeth damage is a common complication in nasopharyngeal carcinoma (NPC) patients undergoing radiotherapy (RT) that seriously affects their oral health-related quality of life (OHRQoL). However, few studies have focused on protecting teeth function. This study aimed to calculate dental dose limits based on OHRQoL. Analysis was performed on 96 NPC patients who received RT (all received routine pre-radiotherapy dental interventions in our department). Based on the General Oral Health Assessment Index (GOHAI), OHRQoL was assigned into poor (<46) and good condition groups (≥46). The binary logistic regression analysis model was used for single-factor and multivariate analyses to identify the independent factors affecting OHRQoL. The cut-off value of dose received by teeth was obtained by drawing a receiver operating characteristic curve. NPC patients experienced a decline in OHRQoL following RT (P < 0.05). Univariate analysis of GOHAI revealed that the average dose of maxillary anterior teeth, the average dose received by the oral cavity, tumor volume (GTVnx), and liking of the sweet food all affected GOHAI (P < 0.05). Multivariate analysis indicated that the average dose of maxillary anterior teeth and liking sweet food were independent factors that influenced the OHRQoL of NPC patients with RT. When the average dose received by maxillary anterior teeth is greater than 28.78 Gy, and there is a tendency in sweet food, the OHRQoL will deteriorate. NPC patients who received RT had a better OHRQoL if the average dose to maxillary anterior teeth was limited to less than 28.78 Gy and the intake of high-sugar foods was reduced.
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Affiliation(s)
- Jing Yang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Liping Yang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Qian Han
- Department of Stomatology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Yangyang Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Zhenchao Tao
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Yan Zhou
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Peng Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Ru Wang
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Bin Sun
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230031, Anhui Province, China
| | - Jian He
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, No. 107 Huan Hu East Road, Shushan District, Hefei 230031, Anhui Province, China
| | - Jin Gao
- Department of Radiation Oncology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, No. 107 Huan Hu East Road, Shushan District, Hefei 230031, Anhui Province, China
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3
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Zagury-Orly I, Khaouam N, Noujaim J, Desrosiers MY, Maniakas A. The Effect of Radiation and Chemoradiation Therapy on the Head and Neck Mucosal Microbiome: A Review. Front Oncol 2021; 11:784457. [PMID: 34926301 PMCID: PMC8674486 DOI: 10.3389/fonc.2021.784457] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/11/2021] [Indexed: 12/12/2022] Open
Abstract
Radiation (RT) and chemoradiation therapy (CRT) play an essential role in head and neck cancer treatment. However, both cause numerous side effects in the oral cavity, paranasal sinuses, and pharynx, having deleterious consequences on patients’ quality of life. Concomitant with significant advances in radiation oncology, much attention has turned to understanding the role of the microbiome in the pathogenesis of treatment-induced tissue toxicity, to ultimately explore microbiome manipulation as a therapeutic intervention. This review sought to discuss current publications investigating the impact of RT and CRT-induced changes on the head and neck microbiome, using culture-independent molecular methods, and propose opportunities for future directions. Based on 13 studies derived from a MEDLINE, EMBASE, and Web of Science search on November 7, 2021, use of molecular methods has uncovered various phyla and genera in the head and neck microbiome, particularly the oral microbiome, not previously known using culture-based methods. However, limited research has investigated the impact of RT/CRT on subsites other than the oral cavity and none of the studies aimed to examine the relationship between the head and neck microbiome and treatment effectiveness. Findings from this review provide helpful insights on our current understanding of treatment-induced oral mucositis, dental plaque, and caries formation and highlight the need for future research to examine the effect of RT/CRT on the sinonasal and oropharyngeal microbiome. In addition, future research should use larger cohorts, examine the impact of the microbiome on treatment response, and study the effect of manipulating the microbiome to overcome therapy resistance.
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Affiliation(s)
- Ivry Zagury-Orly
- Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Nader Khaouam
- Department of Radiation Oncology, Hôpital Maisonneuve-Rosemont, Montreal, QC, Canada
| | - Jonathan Noujaim
- Department of Oncology, Hôpital Maisonneuve-Rosemont, Montreal, QC, Canada
| | - Martin Y Desrosiers
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada.,Division of Otolaryngology-Head and Neck Surgery, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - Anastasios Maniakas
- Division of Otolaryngology-Head and Neck Surgery, Hôpital Maisonneuve-Rosemont, Montreal, QC, Canada.,Department of Experimental Surgery, McGill University, Montreal, QC, Canada.,Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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4
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Ingrosso G, Saldi S, Marani S, Wong AYW, Bertelli M, Aristei C, Zelante T. Breakdown of Symbiosis in Radiation-Induced Oral Mucositis. J Fungi (Basel) 2021; 7:jof7040290. [PMID: 33921294 PMCID: PMC8068946 DOI: 10.3390/jof7040290] [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: 03/19/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 01/06/2023] Open
Abstract
Oral mucositis is an acute side effect of radiation therapy that is especially common with head and neck cancer treatment. In recent years, several studies have revealed the predisposing factors for mucositis, leading to the pre-treatment of patients to deter the development of opportunistic oral fungal infections. Although many clinical protocols already advise the use of probiotics to counteract inflammation and fungal colonization, preclinical studies are needed to better delineate the mechanisms by which a host may acquire benefits via co-evolution with oral microbiota, probiotics, and fungal commensals, such as Candida albicans, especially during acute inflammation. Here, we review the current understanding of radiation therapy-dependent oral mucositis in terms of pathology, prevention, treatment, and related opportunistic infections, with a final focus on the oral microbiome and how it may be important for future therapy.
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Affiliation(s)
- Gianluca Ingrosso
- Radiation Oncology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy; (G.I.); (S.M.); (C.A.)
- Radiation Oncology Section, Perugia General Hospital, 06129 Perugia, Italy;
| | - Simonetta Saldi
- Radiation Oncology Section, Perugia General Hospital, 06129 Perugia, Italy;
| | - Simona Marani
- Radiation Oncology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy; (G.I.); (S.M.); (C.A.)
- Radiation Oncology Section, Perugia General Hospital, 06129 Perugia, Italy;
| | - Alicia Y. W. Wong
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, 141 86 Stockholm, Sweden;
| | | | - Cynthia Aristei
- Radiation Oncology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy; (G.I.); (S.M.); (C.A.)
- Radiation Oncology Section, Perugia General Hospital, 06129 Perugia, Italy;
| | - Teresa Zelante
- Pathology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
- Correspondence: ; Tel.: +39-075-585-8236
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5
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Cunha SR, Maravic T, Comba A, Ramos PA, Tay FR, Pashley DH, Fregnani ER, Aranha AC, Mazzoni A, Breschi L. In vivo and in vitro radiotherapy increased dentin enzymatic activity. J Dent 2020; 100:103429. [PMID: 32673637 DOI: 10.1016/j.jdent.2020.103429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/01/2020] [Accepted: 07/11/2020] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES The present study investigated the effects of in vitro and in-vivo radiotherapy on endogenous enzymatic activity in dentin using gelatin zymography and in-situ zymography. METHODS Gelatin zymographic assays were performed on protein extracts obtained from dentin powder of sound non-irradiated (NRT), in vitro irradiated (VTRT) and in vivo irradiated (VIRT) human teeth. Their proteolytic activities were quantified using band densitometric evaluation. For in-situ zymography, dentin specimens from NRT, VIRT and VTRT were covered with fluorescein-conjugated gelatin and examined with confocal laser-scanning microscopy. Fluorescence intensity emitted by the hydrolyzed fluorescein-conjugated gelatin was quantified and statistically analyzed. In-situ zymography data were statistically analyzed using Kruskal-Wallis ANOVA and Dunn's multiple comparison procedures (α = 0.05). RESULTS No difference between in vitro and in vivo radiotherapy treatment was found. Both VTRT and VIRT groups showed increase in MMP-9 expression when compared to NRT group. Significant increases (p < 0.05) in gelatinolytic activity (26 % for VTRT; 55 % for VIRT) were observed when compared to the NRT group. CONCLUSION Radiotherapy increase endogenous enzymatic activity in non-restored dentin.
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Affiliation(s)
- Sandra Ribeiro Cunha
- University of São Paulo, São Paulo, Brazil; University of Bologna, Bologna, Italy; University of Iowa, Iowa City, USA
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6
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Joseph NT, Shankar SR, Narasimhamurthy RK, Rao SBS, Mumbrekar KD. Bi-Directional interactions between microbiota and ionizing radiation in head and neck and pelvic radiotherapy - clinical relevance. Int J Radiat Biol 2020; 96:961-971. [PMID: 32420768 DOI: 10.1080/09553002.2020.1770361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Purpose: Rapid developments in high throughput screening technology for the detection and identification of the human microbiota have helped in understanding its influence on human health and disease. In the recent past, several seminal studies have demonstrated the influence of microbiota on outcomes of therapy-associated radiation exposure. In this review, we highlight the concepts related to the mechanisms by which radiation alters the microbiota composition linked with radiation-associated toxicity in head and neck and pelvic regions. We further discuss specific microbial changes that can be employed as a biomarker for radiation and tumor response.Conclusion: Knowledge of the influence of microbiota in radiation response and advances in microbiota manipulation techniques would help to design personalized treatment augmenting the efficacy of radiotherapy.
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Affiliation(s)
- Nidhya Teresa Joseph
- Department of Biotechnology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Saligrama R Shankar
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Rekha K Narasimhamurthy
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Satish Bola Sadashiva Rao
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
| | - Kamalesh Dattaram Mumbrekar
- Department of Radiation Biology & Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, India
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7
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Proctor DM, Shelef KM, Gonzalez A, Davis CL, Dethlefsen L, Burns AR, Loomer PM, Armitage GC, Ryder MI, Millman ME, Knight R, Holmes SP, Relman DA. Microbial biogeography and ecology of the mouth and implications for periodontal diseases. Periodontol 2000 2020; 82:26-41. [PMID: 31850642 DOI: 10.1111/prd.12268] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In humans, the composition of microbial communities differs among body sites and between habitats within a single site. Patterns of variation in the distribution of organisms across time and space are referred to as "biogeography." The human oral cavity is a critical observatory for exploring microbial biogeography because it is spatially structured, easily accessible, and its microbiota has been linked to the promotion of both health and disease. The biogeographic features of microbial communities residing in spatially distinct, but ecologically similar, environments on the human body, including the subgingival crevice, have not yet been adequately explored. The purpose of this paper is twofold. First, we seek to provide the dental community with a primer on biogeographic theory, highlighting its relevance to the study of the human oral cavity. We summarize what is known about the biogeographic variation of dental caries and periodontitis and postulate that disease occurrence reflects spatial patterning in the composition and structure of oral microbial communities. Second, we present a number of methods that investigators can use to test specific hypotheses using biogeographic theory. To anchor our discussion, we apply each method to a case study and examine the spatial variation of the human subgingival microbiota in 2 individuals. Our case study suggests that the composition of subgingival communities may conform to an anterior-to-posterior gradient within the oral cavity. The gradient appears to be structured by both deterministic and nondeterministic processes, although additional work is needed to confirm these findings. A better understanding of biogeographic patterns and processes will lead to improved efficacy of dental interventions targeting the oral microbiota.
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Affiliation(s)
- Diana M Proctor
- Division of Infectious Diseases & Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA.,National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Katie M Shelef
- Department of Biology, Stanford University, Stanford, California, USA
| | - Antonio Gonzalez
- Departments of Pediatrics and Computer Science and Engineering, University of California at San Diego, La Jolla, California, USA
| | - Clara L Davis
- Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, USA
| | - Les Dethlefsen
- Division of Infectious Diseases & Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Adam R Burns
- Division of Infectious Diseases & Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Peter M Loomer
- Ashman Department of Periodontology & Implant Dentistry, New York University College of Dentistry, New York, New York, USA
| | - Gary C Armitage
- Division of Periodontology, Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, California, USA
| | - Mark I Ryder
- Division of Periodontology, Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, California, USA
| | - Meredith E Millman
- Division of Periodontology, Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, California, USA
| | - Rob Knight
- Departments of Pediatrics and Computer Science and Engineering, University of California at San Diego, La Jolla, California, USA
| | - Susan P Holmes
- Department of Statistics, Stanford University, Stanford, California, USA
| | - David A Relman
- Division of Infectious Diseases & Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA.,Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, California, USA.,Infectious Diseases Section, Veterans Affairs Palo Alto Health Care System, Palo Alto, California, USA
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8
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Daveshwar SR, Kapoor SV, Daveshwar MR. Quantitative Polymerase Chain Reaction Analysis of Cariogenic Streptococcus mutans in Saliva of Oral and Laryngeal Cancer Patients Undergoing Radiotherapy: A Clinical Study. Int J Appl Basic Med Res 2020; 10:91-96. [PMID: 32566524 PMCID: PMC7289201 DOI: 10.4103/ijabmr.ijabmr_151_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/29/2019] [Accepted: 01/20/2020] [Indexed: 12/02/2022] Open
Abstract
CONTEXT Radiotherapy leads to radiation-induced caries. There is limited knowledge about the quantification of cariogenic bacteria in the saliva of irradiated cancer patients. OBJECTIVE The aim of this study is to check salivary pH, flow rate, and the assessment of Streptococcus mutans in the saliva of irradiated oral and laryngeal cancer patients using quantitative real-time polymerase chain reaction (qRT-PCR). SETTINGS AND DESIGN This was time-bound study which consisted of 26 cancer patients undergoing radiotherapy (13-oral cancer 13-laryngeal cancer). SUBJECTS AND METHODS Resting saliva samples were gathered from oral (Group-I) and laryngeal (Group-II) cancer patients immediately before radiotherapy and after completion of radiotherapy (dose-60 Gy). pH of saliva and the salivary flow rate was measured. S. mutans were analyzed using qRT PCR. STATISTICAL ANALYSIS USED Data were analyzed using SPSS software 20. Paired t-test was used to evaluate salivary pH, flow rate, and amount of S. mutans pre- and post-radiotherapy for Group I and II. Independent t-test was used to compare salivary pH, flow rate, and S. mutans pre- and post-radiotherapy between Group I and II. RESULTS Salivary pH and flow rate significantly reduced postradiotherapy in oral and laryngeal cancer patients (P < 0.001). The amount of S. mutans statistically increased postradiotherapy in oral cancer patients (P = 0.001). While S. mutans count was statistically insignificant in laryngeal cancer patients (P = 0.091). There was a significant increase in the amount of S. mutans in Group I when compared with Group II (P = 0.002). CONCLUSION Amount of S. mutans increased postradiotherapy in oral cancer patients. While the salivary pH and salivary flow rate reduced postradiotherapy.
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Affiliation(s)
- Shilpi Rajiv Daveshwar
- Department of Conservative Dentistry, Esthetics and Endodontics, Manubhai Patel Dental College and Oral Research Institute, Vadodara, Gujarat, India
| | - Sonali Vinod Kapoor
- Department of Conservative Dentistry, Esthetics and Endodontics, Manubhai Patel Dental College and Oral Research Institute, Vadodara, Gujarat, India
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9
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Mougeot JLC, Stevens CB, Almon KG, Paster BJ, Lalla RV, Brennan MT, Mougeot FB. Caries-associated oral microbiome in head and neck cancer radiation patients: a longitudinal study. J Oral Microbiol 2019; 11:1586421. [PMID: 30891159 PMCID: PMC6419625 DOI: 10.1080/20002297.2019.1586421] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 01/04/2023] Open
Abstract
Head and neck cancer (HNC) therapy often leads to caries development. Our goal was to characterize the oral microbiome of HNC patients who underwent radiation therapy (RT) at baseline (T0), and 6 (T6) and 18 (T18) months post-RT, and to determine if there was a relationship with increased caries. HOMINGS was used to determine the relative abundance (RA) of >600 bacterial species in oral samples of 31 HNC patients. The DMFS score was used to define patient groups with tooth decay increase (DMFS[+]) or no increase (DMFS[-]).A change in microbiome beta-diversity was observed at T6 and T18. The Streptococcus mutans RA increased at T6 in both DMFS[+] and DMFS[-] groups. The RA of Prevotella melaninogenica, the species often associated with caries in young children, decreased at T6 in the DMFS[-] group. The RA of the health-associated species, Abiotrophia defective, decreased in the DMFS[+] group. The oral microbiome underwent significant changes in radiation-treated HNC patients, whether they developed caries or not. Caries rates were not associated with a difference in salivary flow reduction between DMFS[+] andDMFS[-] groups. Patients who develop caries might be more susceptible to certain species associated with oral disease or have fewer potentially protective oral species.
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Affiliation(s)
| | - Craig B Stevens
- Carolinas Medical Center - Atrium Health, Charlotte, NC, USA
| | - Kathryn G Almon
- Carolinas Medical Center - Atrium Health, Charlotte, NC, USA
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10
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Oza S, Patel K, Bhosale S, Mitra R, Gupta R, Choudhary D. To Determine the Effect of Chewing Gum Containing Xylitol and Sorbitol on Mutans Streptococci and Lactobacilli Count in Saliva, Plaque, and Gingival Health and to Compare the Efficacy of Chewing Gums. J Int Soc Prev Community Dent 2018; 8:354-360. [PMID: 30123770 PMCID: PMC6071354 DOI: 10.4103/jispcd.jispcd_54_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 05/25/2018] [Indexed: 12/23/2022] Open
Abstract
Aims and Objective: The aim of the study is to determine the effect of chewing gum containing xylitol and sorbitol on mutans streptococci and Lactobacilli count in saliva, plaque, and gingival health and to compare the efficacy of chewing gums. Materials and Methods: The study was designed as a double-blinded randomized uncontrolled clinical trial with two parallel arms. A total of 80 students consented and completed the study. The test group (X) received corresponding pellets with xylitol and the control group (S) was given pellets containing sorbitol and maltitol three times daily for 30 days. Clinical scoring and saliva samples were collected at three different intervals, at baseline, 15th, and 30th day of the study. The outcome measure was plaque index score, gingival index score, salivary mutans streptococci, and Lactobacilli counts. Data collected were analyzed using Statistical Package for the Social Sciences (SPSS version 19.0). Results: There was no statistically significant difference between the mean of mutans streptococci count of test and control group at baseline and 15th day, but there was statistically highly significant difference (P = 0.00) between the mean of mutans streptococci count in test and control group on the 30th day. The mean of Lactobacilli count, plaque index, and gingival index score between test and control group showed no statistically significant difference at baseline, 15th day, and 30th day. Conclusion: The results suggest that only xylitol gum may interfere with the mutans streptococci composition and reduce it after continuous use of 30 days effectively as compared to sorbitol gum, but both the gums are equally effective on salivary Lactobacilli, plaque, and gingiva at different intervals.
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Affiliation(s)
- Swapnil Oza
- Department of Public Health Dentistry, Darshan Dental College and Hospital, Udaipur, Rajasthan, India
| | - Kreta Patel
- Department of Public Health Dentistry, Darshan Dental College and Hospital, Udaipur, Rajasthan, India
| | - Satish Bhosale
- Department of Oral Pathology and Microbiology, RR Dental College and Hospital, Udaipur, Rajasthan, India
| | - Ruchi Mitra
- Department of Public Health Dentistry, Darshan Dental College and Hospital, Udaipur, Rajasthan, India
| | - Rupam Gupta
- Department of Public Health Dentistry, Darshan Dental College and Hospital, Udaipur, Rajasthan, India
| | - Divya Choudhary
- Department of Public Health Dentistry, Darshan Dental College and Hospital, Udaipur, Rajasthan, India
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Saliva Dysfunction and Oral Microbial Changes among Systemic Lupus Erythematosus Patients with Dental Caries. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8364042. [PMID: 29808167 PMCID: PMC5902118 DOI: 10.1155/2018/8364042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 01/28/2018] [Accepted: 02/15/2018] [Indexed: 11/20/2022]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune and inflammatory disease affecting multiorgans of human body. Independent studies show that SLE patients had higher caries prevalence compared to non-SLE individuals. However, the underlying mechanisms remain unclear. In present study, we enrolled SLE patients to explore potential factors contributing to the susceptibility of SLE patients to dental caries (such as oral hygiene, salivary function, and oral microbial community). Dental examination confirmed SLE patients were more vulnerable to caries. Although subjects in both groups announced similar oral hygiene habits, more dental plaque was found on tooth surfaces of SLE patents as revealed by plaque index. In addition, the salivary function was impaired in SLE group as salivary flow rate, buffering capacity, and pH were lower among SLE subjects compared to healthy controls. Importantly, disturbed microbial community with lower richness and diversity was observed in SLE group, as well as disequilibrium between acidogenic/aciduric pathogens and alkali-generating commensal bacteria. Our data suggest that SLE increases patients' sensitivity to dental caries through imposing stress to both host and oral microbes.
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Almståhl A, Finizia C, Carlén A, Fagerberg-Mohlin B, Alstad T. Explorative study on mucosal and major salivary secretion rates, caries and plaque microflora in head and neck cancer patients. Int J Dent Hyg 2018. [DOI: 10.1111/idh.12338] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- A Almståhl
- Department of Oral Microbiology and Immunology; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - C Finizia
- Department of Otorhinolaryngology, Head and Neck Surgery; Institute of Clinical Sciences; Sahlgrenska Academy; Sahlgrenska University Hospital; University of Gothenburg; Gothenburg Sweden
| | - A Carlén
- Department of Oral Microbiology and Immunology; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - B Fagerberg-Mohlin
- Department of Oral and Maxillofacial Surgery; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - T Alstad
- Department of Oral Prosthetics; Institute of Odontology; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
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Hong CHL, Hu S, Haverman T, Stokman M, Napeñas JJ, Braber JBD, Gerber E, Geuke M, Vardas E, Waltimo T, Jensen SB, Saunders DP. A systematic review of dental disease management in cancer patients. Support Care Cancer 2017; 26:155-174. [DOI: 10.1007/s00520-017-3829-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 07/10/2017] [Indexed: 12/14/2022]
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Pow EHN, Chen Z, Kwong DLW, Lam OLT. Salivary Anionic Changes after Radiotherapy for Nasopharyngeal Carcinoma: A 1-Year Prospective Study. PLoS One 2016; 11:e0152817. [PMID: 27031997 PMCID: PMC4816308 DOI: 10.1371/journal.pone.0152817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/18/2016] [Indexed: 11/19/2022] Open
Abstract
Objectives To investigate the salivary anionic changes of patients with nasopharyngeal carcinoma (NPC) treated by radiotherapy. Material and Methods Thirty-eight patients with T1-4, N0-2, M0 NPC received conventional radiotherapy. Stimulated whole saliva was collected at baseline and 2, 6 and 12 months after radiotherapy. Salivary anions levels were measured using ion chromatography. Results A reduction in stimulated saliva flow and salivary pH was accompanied by sustained changes in anionic composition. At 2 months following radiotherapy, there was a significant increase in chloride, sulphate, lactate and formate levels while significant reductions in nitrate and thiocyanate levels were found. No further changes in these anion levels were observed at 6 and 12 months. No significant changes were found in phosphate, acetate, or propionate levels throughout the study period. Conclusions Conventional radiotherapy has a significant and prolonged impact on certain anionic species, likely contributing to increased cariogenic properties and reduced antimicrobial capacities of saliva in NPC patients post-radiotherapy.
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Affiliation(s)
- Edmond H. N. Pow
- Oral Rehabilitation, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Zhuofan Chen
- Department of Oral Implantology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Dora L. W. Kwong
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Otto L. T. Lam
- Oral Rehabilitation, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
- * E-mail:
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Galvão-Moreira LV, da Cruz MCFN. Dental demineralization, radiation caries and oral microbiota in patients with head and neck cancer. Oral Oncol 2015; 51:e89-90. [PMID: 26541209 DOI: 10.1016/j.oraloncology.2015.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
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