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Cao H, Wu H, Wang P, Zhang H, Wang S. Association between periodontal disease and schizophrenia: a bidirectional two-sample Mendelian randomization study. Sci Rep 2024; 14:17391. [PMID: 39075078 PMCID: PMC11286959 DOI: 10.1038/s41598-024-65181-3] [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: 03/11/2024] [Accepted: 06/18/2024] [Indexed: 07/31/2024] Open
Abstract
The connection between periodontal disease (PD) and schizophrenia (SCZ) has been reported in observational studies, but it remains unclear. This research aims to examine the bidirectional causal impacts between PD and SCZ. The FinnGen consortium supplied summarized data on PD for 346,731 individuals (87,497 cases and 259,234 controls) of Finnish ancestry, and information on SCZ was acquired from the OpenGWAS repository, encompassing 127,906 individuals (52,017 cases and 75,889 controls) of European ancestry. Next, we conducted Mendelian randomization (MR) analysis to establish a causal inference relationship between PD and SCZ. The inverse variance weighted (IVW) method was utilized as the primary analysis. Additionally, some sensitivity analyses were utilized to verify the stability of the results. The analysis of IVW results indicated no impact of PD on SCZ (IVW OR = 1.10, 95% CI 0.97-1.24, P = 0.14). Nevertheless, the inverse relationship between PD and SCZ was identified through reverse MR analysis (IVW OR = 1.03, 95% CI 1.01-1.05, P = 0.002). The findings from MR-Egger, weighted median, simple mode, and weighted mode approaches aligned with the outcomes of the IVW method. Based on sensitivity analyses, horizontal pleiotropy is unlikely to distort causal estimates. This study presented the initial proof of a genetic causal relationship between SCZ and PD, albeit with a minimal impact. Further exploration is needed to gain a deeper understanding of this relationship. Furthermore, no genetic causal relationship between PD and SCZ was identified.
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Affiliation(s)
- Hongliang Cao
- Department of Urology II, The First Hospital of Jilin University, Changchun, 130021, China
| | - Hao Wu
- Department of Urology II, The First Hospital of Jilin University, Changchun, 130021, China
| | - Pengyu Wang
- Department of Urology II, The First Hospital of Jilin University, Changchun, 130021, China
| | - Haiyang Zhang
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, 130021, China.
| | - Song Wang
- Department of Urology II, The First Hospital of Jilin University, Changchun, 130021, China.
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Marruganti C, Luthra S, Hussain SB, Suvan J, D'Aiuto F. Healthy lifestyles and better periodontal health: Results from two large population-based surveys. J Periodontal Res 2024. [PMID: 38953498 DOI: 10.1111/jre.13320] [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: 04/17/2024] [Revised: 06/10/2024] [Accepted: 06/20/2024] [Indexed: 07/04/2024]
Abstract
AIM To ascertain whether healthy lifestyles are associated with periodontal diseases in two large-scale surveys in the US (National Health and Nutrition Examination Survey - NHANES) and the UK Biobank. METHODS 9854 US adults and 111 679 UK adults were included in the analyses. A healthy lifestyle score (HLS), ranging between 0 and 5, was calculated based on the reported number of healthy behaviours, including never smoking, no heavy alcohol consumption, top third of leisure-time physical activity, higher dietary quality, and ideal sleep duration. The prevalence of periodontal diseases was the primary outcome in both surveys. In the NHANES, periodontal status was assessed through a full-mouth periodontal examination, while in the UKB, only self-reported periodontal status was available. RESULTS Multiple regression analyses confirmed that the presence of at least 2-3 healthy behaviours (vs. 0-1) was associated with lower odds of overall and severe periodontitis (ORs 0.5, 0.4-0.6; p < .001 and 0.5, 0.3-0.8; p = .003, respectively) in the NHANES, and of bleeding gums (OR = 0.9, 0.8-1.0; p = .092) and loose teeth (OR = 0.6, 0.5-0.7; p < .001) in UKB. This association increased when considering prevalence of 4-5 healthy behaviours (vs. 0-1) in both the NHANES (periodontitis: OR = 0.3, 0.2-0.4; p < .001; severe periodontitis: OR = 0.1, 0.01-0.2; p < .001) and the UKB (bleeding gums: OR = 0.8, 0.7-0.9; p < .001; loose teeth: OR = 0.5, 0.4-0.6; p < .001). Mediation analyses revealed how these protective associations could be partially mediated (1-14%) by differences in biomarkers of systemic inflammation (white blood cells and neutrophils count as well as C-reactive protein). CONCLUSIONS Adoption of healthy lifestyle behaviours is associated with a lower prevalence of periodontal diseases within two large population-based samples. This relationship exhibits a dose-response pattern, implying that greater adherence to healthy habits leads to a more significant protective effect against the odds of periodontal diseases. Additionally, our findings suggest that this protective effect is, in part, mediated by reductions in systemic inflammation.
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Affiliation(s)
- Crystal Marruganti
- Periodontology Unit, Eastman Dental Institute, University College London, London, UK
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Shailly Luthra
- Periodontology Unit, Eastman Dental Institute, University College London, London, UK
| | - Syed Basit Hussain
- Periodontology Unit, Eastman Dental Institute, University College London, London, UK
| | - Jeanie Suvan
- University of Glasgow Dental School, Glasgow, UK
| | - Francesco D'Aiuto
- Periodontology Unit, Eastman Dental Institute, University College London, London, UK
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Gao C, Larvin H, Bishop DT, Bunce D, Pavitt S, Wu J, Kang J. Oral diseases are associated with cognitive function in adults over 60 years old. Oral Dis 2024; 30:3480-3488. [PMID: 37811600 DOI: 10.1111/odi.14757] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 08/14/2023] [Accepted: 09/19/2023] [Indexed: 10/10/2023]
Abstract
OBJECTIVE To investigate the bidirectional association between oral diseases and cognitive function comprehensively. SUBJECTS AND METHODS This cross sectional study utilized data from the National Health and Nutrition Examination Survey. Oral diseases include periodontitis, dental caries, and tooth loss (end point of oral disease resulting in tooth extraction). Cognitive function included three domains: memory, processing speed, and executive function. A global cognitive score was then derived from sum of the three cognitive domains. Oral cognition associations were examined using various statistical models: (1) Regress oral disease on cognitive function; (2) Regress cognitive function on oral disease; and (3) Structural equation modelling treating cognition and oral disease as latent variables. RESULTS There were 2508 participants aged 60+ who had both oral and cognitive information. Associations between various oral disease and global cognitive score were observed (Odds ratio ORcog->periodontitis 0.95, 95% Confidence Interval [0.92, 0.99]; βcog->caries -0.13, [-0.23, -0.04]; βcog->tooth loss -0.03 [-0.04, -0.01]; βtooth loss->cog -0.04 [-0.06, -0.02]; βcaries->cog -0.03 [-0.06, -0.01]; βperiodontitis->cog -0.39 [-0.69, -0.10]). Significant correlation was also found between these oral disease and cognitive function using structural equation model (r -0.22, [-0.34, -0.10]). CONCLUSIONS This study found robust bidirectional associations between oral disease and cognitive function using various modelling approaches among the aging population.
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Affiliation(s)
- Chenyi Gao
- School of Dentistry, University of Leeds, Leeds, UK
| | - Harriet Larvin
- Centre for Primary Care, Wolfson Institute of Population Health, Queen Mary, University of London, London, UK
| | - David Timothy Bishop
- Leeds Institute of Medical Research, School of Medicine, University of Leeds, Leeds, UK
| | - David Bunce
- School of Psychology, University of Leeds, Leeds, UK
| | - Susan Pavitt
- School of Dentistry, University of Leeds, Leeds, UK
| | - Jianhua Wu
- Centre for Primary Care, Wolfson Institute of Population Health, Queen Mary, University of London, London, UK
| | - Jing Kang
- School of Dentistry, University of Leeds, Leeds, UK
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Kang J, Wu J, Aggarwal VR, Shiers D, Doran T, Palmier-Claus J. Investigating the Relationship between Oral Health and Severe Mental Illness: Analysis of NHANES 1999-2016. Dent J (Basel) 2024; 12:191. [PMID: 39056978 PMCID: PMC11276391 DOI: 10.3390/dj12070191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 06/07/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
OBJECTIVES To explore whether: (i) people with severe mental illness (SMI) experience worse oral health than the general population, and (ii) the risk factors for poor oral health in people with SMI. METHODS Cross-sectional data were extracted from the National Health and Nutrition Examination Survey (1999-2016), including on self-rated oral health, oral pain, tooth loss, periodontitis stage, and number of decayed, missing, and filled teeth. Candidate risk factors for poor oral health included demographic characteristics, lifestyle factors, physical health comorbidities, and dental hygiene behaviours. Ordinal logistic regression and zero-inflated negative binomial models were used to explore predictors of oral health outcomes. RESULTS There were 53,348 cases included in the analysis, including 718 people with SMI. In the fully adjusted model, people with SMI were more likely to suffer from tooth loss (OR 1.60, 95% CI: 1.34-1.92). In people with SMI, risk factors identified for poor oral health outcomes were older age, white ethnicity, lower income, smoking history, and diabetes. Engaging in physical activity and daily use of dental floss were associated with better oral health outcomes. CONCLUSIONS People with SMI experience higher rates of tooth loss than the general population, and certain subgroups are particularly at risk. Performing regular physical exercise and flossing may lower the risk of poor oral health, while smoking and diabetes may increase the risk. These findings suggest opportunities for targeted prevention and early intervention strategies to mitigate adverse oral health outcomes in people with SMI.
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Affiliation(s)
- Jing Kang
- Faculty of Dentistry, Oral, and Craniofacial Sciences, King’s College London, London SE1 9RT, UK
| | - Jianhua Wu
- Centre for Primary Care, Wolfson Institute of Population Health, Queen Mary University of London, London E1 4NS, UK
| | | | - David Shiers
- Division of Psychology & Mental Health, University of Manchester, Manchester M13 9PL, UK;
| | - Tim Doran
- Health Services & Policy, University of York, York YO10 5DD, UK;
| | - Jasper Palmier-Claus
- Spectrum Centre for Mental Health Research, Division of Health Research, Lancaster University, Lancaster LA1 4YW, UK;
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire PR5 6AW, UK
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Jones A, Sturrock A, Elliott E, Gussy M, Maidment I, Nelson D, Chew-Graham CA, Aggarwal VR. Community pharmacists' perceptions on managing people with oral health problems-A prioritisation survey. J Oral Rehabil 2024; 51:851-860. [PMID: 38225810 DOI: 10.1111/joor.13657] [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: 12/14/2022] [Revised: 06/29/2023] [Accepted: 01/05/2024] [Indexed: 01/17/2024]
Abstract
BACKGROUND Alternative sources of oral health information are likely to be of benefit to the public, particularly where access to dental services is limited. There is evidence that community pharmacists are willing to advocate for oral health, but it is unclear what is needed to develop this role. OBJECTIVES The aims of this study were to obtain the views of community pharmacy staff on the frequency and type of oral health conditions they encounter challenges in management and training/research priorities. METHODS An anonymous online survey targeted pharmacy staff and elicited quantitative data related to the types and frequencies of oral health conditions experienced. Participants were stratified by age, gender, ethnicity, experience and setting. Free text responses allowed participants to detail challenging aspects of patient management, their priorities for service development and future research. Reflexive thematic analysis of free text responses identified key themes. RESULTS Oral/facial pain and swelling were seen weekly by most respondents, and daily by 28.8%. Other commonly presenting conditions were ulcers, dry-mouth, thrush and denture issues. Challenges in managing oral health conditions included: access to NHS dentistry, awareness of referral pathways, examination/diagnosis and understanding 'Red Flags'. CONCLUSION Acute and chronic oral health conditions commonly present to community pharmacists who lack necessary knowledge/training, which may result in missing 'red flag' symptoms for oral cancer or acute facial swellings which can be life threatening. There is a need to support pharmacists, who are willing to act as oral health advocates, in recognition, prevention and onward referral for oral diseases.
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Affiliation(s)
- Adam Jones
- School of Dentistry, University of Leeds, Leeds, UK
| | - Andrew Sturrock
- Department of Nursing, Midwifery and Health, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Emma Elliott
- School of Dentistry, University of Leeds, Leeds, UK
| | - Mark Gussy
- Lincoln International Institute for Rural Health, University of Lincoln, Lincoln, UK
| | - Ian Maidment
- Pharmacy, College of Health and Life Sciences, Aston University, Birmingham, UK
| | - David Nelson
- Lincoln International Institute for Rural Health, University of Lincoln, Lincoln, UK
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Hilton C, Morris A, Burnside G, Harris R, Aggarwal VR, Procter S, Griffiths R, French P, Laverty L, Lobban F, Berry K, Shiers D, Golby R, Fazekas F, Valemis K, Perry A, Newens C, Kerry E, Mupinga P, Gkioni E, Lodge C, Dawber A, Elliott E, Lunat F, Palmier-Claus J. A two-arm, randomised feasibility trial using link workers to improve dental visiting in people with severe mental illness: a protocol paper. Pilot Feasibility Stud 2023; 9:157. [PMID: 37684682 PMCID: PMC10485965 DOI: 10.1186/s40814-023-01383-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
BACKGROUND People with severe mental illness (e.g. psychosis, bipolar disorder) experience poor oral health compared to the general population as shown by more decayed, missing and filled teeth and a higher prevalence of periodontal disease. Attending dental services allows treatment of oral health problems and support for prevention. However, people with severe mental illness face multiple barriers to attending routine dental appointments and often struggle to access care. Link work interventions use non-clinical support staff to afford vulnerable populations the capacity, opportunity, and motivation to navigate use of services. The authors have co-developed with service users a link work intervention for supporting people with severe mental illness to access routine dental appointments. The Mouth Matters in Mental Health Study aims to explore the feasibility and acceptability of this intervention within the context of a feasibility randomised controlled trial (RCT) measuring outcomes related to the recruitment of participants, completion of assessments, and adherence to the intervention. The trial will closely monitor the safety of the intervention and trial procedures. METHODS A feasibility RCT with 1:1 allocation to two arms: treatment as usual (control) or treatment as usual plus a link work intervention (treatment). The intervention consists of six sessions with a link worker over 9 months. Participants will be adults with severe mental illness receiving clinical input from secondary care mental health service and who have not attended a planned dental appointment in the past 3 years. Assessments will take place at baseline and after 9 months. The target recruitment total is 84 participants from across three NHS Trusts. A subset of participants and key stakeholders will complete qualitative interviews to explore the acceptability of the intervention and trial procedures. DISCUSSION The link work intervention aims to improve dental access and reduce oral health inequalities in people with severe mental illness. There is a dearth of research relating to interventions that attempt to improve oral health outcomes in people with mental illness and the collected feasibility data will offer insights into this important area. TRIAL REGISTRATION The trial was preregistered on ISRCTN (ISRCTN13650779) and ClinicalTrials.gov (NCT05545228).
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Affiliation(s)
- Claire Hilton
- The Spectrum Centre for Mental Health Research, Lancaster University, Lancaster, UK
| | - Abigail Morris
- The Spectrum Centre for Mental Health Research, Lancaster University, Lancaster, UK
| | - Girvan Burnside
- Institute of Population Health, University of Liverpool, Liverpool, UK
| | - Rebecca Harris
- Institute of Population Health, University of Liverpool, Liverpool, UK
| | | | - Sarah Procter
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK
| | - Robert Griffiths
- Division of Psychology & Mental Health, University of Manchester, Manchester, UK
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Paul French
- Manchester Metropolitan University, Manchester, UK
- Pennine Care NHS Foundation Trust, Ashton-Under-Lyne, UK
| | - Louise Laverty
- Division of Informatics, Imaging and Data Sciences, University of Manchester, Manchester, UK
| | - Fiona Lobban
- The Spectrum Centre for Mental Health Research, Lancaster University, Lancaster, UK
| | - Katherine Berry
- Division of Psychology & Mental Health, University of Manchester, Manchester, UK
| | - David Shiers
- Division of Psychology & Mental Health, University of Manchester, Manchester, UK
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Rebecca Golby
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK
| | - Fanni Fazekas
- Pennine Care NHS Foundation Trust, Ashton-Under-Lyne, UK
| | - Kyriakos Valemis
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Antonia Perry
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK
| | - Connie Newens
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK
| | - Eirian Kerry
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | | | - Efstathia Gkioni
- Institute of Population Health, University of Liverpool, Liverpool, UK
- Liverpool Clinical Trials Centre, Clinical Directorate, University of Liverpool, Liverpool, UK
| | - Christopher Lodge
- The Spectrum Centre for Mental Health Research, Lancaster University, Lancaster, UK
| | - Alison Dawber
- Greater Manchester Mental Health NHS Foundation Trust, Manchester, UK
| | - Emma Elliott
- School of Dentistry, University of Leeds, Leeds, UK
| | - Farah Lunat
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK
| | - Jasper Palmier-Claus
- The Spectrum Centre for Mental Health Research, Lancaster University, Lancaster, UK.
- Lancashire & South Cumbria NHS Foundation Trust, Lancashire, UK.
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