1
|
Zhao BL, Yu FY, Zhao ZN, Zhao R, Wang QQ, Yang JQ, Hao YK, Zhang ZQ, Ge XJ. Periodontal disease increases the severity of chronic obstructive pulmonary disease: a Mendelian randomization study. BMC Pulm Med 2024; 24:220. [PMID: 38702679 PMCID: PMC11071140 DOI: 10.1186/s12890-024-03025-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 04/19/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Recent research suggests that periodontitis can increase the risk of chronic obstructive pulmonary disease (COPD). In this study, we performed two-sample Mendelian randomization (MR) and investigated the causal effect of periodontitis (PD) on the genetic prediction of COPD. The study aimed to estimate how exposures affected outcomes. METHODS Published data from the Gene-Lifestyle Interaction in the Dental Endpoints (GLIDE) Consortium's genome-wide association studies (GWAS) for periodontitis (17,353 cases and 28,210 controls) and COPD (16,488 cases and 169,688 controls) from European ancestry were utilized. This study employed a two-sample MR analysis approach and applied several complementary methods, including weighted median, inverse variance weighted (IVW), and MR-Egger regression. Multivariable Mendelian randomization (MVMR) analysis was further conducted to mitigate the influence of smoking on COPD. RESULTS We chose five single-nucleotide polymorphisms (SNPs) as instrumental variables for periodontitis. A strong genetically predicted causal link between periodontitis and COPD, that is, periodontitis as an independent risk factor for COPD was detected. PD (OR = 1.102951, 95% CI: 1.005-1.211, p = 0.039) MR-Egger regression and weighted median analysis results were coincident with those of the IVW method. According to the sensitivity analysis, horizontal pleiotropy's effect on causal estimations seemed unlikely. However, reverse MR analysis revealed no significant genetic causal association between COPD and periodontitis. IVW (OR = 1.048 > 1, 95%CI: 0.973-1.128, p = 0.2082) MR Egger (OR = 0.826, 95%CI:0.658-1.037, p = 0.1104) and weighted median (OR = 1.043, 95%CI: 0.941-1.156, p = 0.4239). The results of multivariable Mendelian randomization (MVMR) analysis, after adjusting for the confounding effect of smoking, suggest a potential causal relationship between periodontitis and COPD (P = 0.035). CONCLUSION In this study, periodontitis was found to be independent of COPD and a significant risk factor, providing new insights into periodontitis-mediated mechanisms underlying COPD development.
Collapse
Affiliation(s)
- Bao-Ling Zhao
- Shanxi Medical University School and Hospital of Stomatology, No.63 New South Road Yingze District Taiyuan, Taiyuan, 030001, People's Republic of China
| | - Fei-Yan Yu
- Shanxi Medical University School and Hospital of Stomatology, No.63 New South Road Yingze District Taiyuan, Taiyuan, 030001, People's Republic of China
| | - Zhen-Ni Zhao
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, China
| | - Rong Zhao
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Qian-Qian Wang
- Shanxi Medical University School and Hospital of Stomatology, No.63 New South Road Yingze District Taiyuan, Taiyuan, 030001, People's Republic of China
| | - Jia-Qi Yang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, China
| | - Yu-Kai Hao
- Shanxi Medical University School and Hospital of Stomatology, No.63 New South Road Yingze District Taiyuan, Taiyuan, 030001, People's Republic of China
| | - Zi-Qian Zhang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, China
| | - Xue-Jun Ge
- Shanxi Medical University School and Hospital of Stomatology, No.63 New South Road Yingze District Taiyuan, Taiyuan, 030001, People's Republic of China.
| |
Collapse
|
2
|
Røsland A, Bertelsen RJ, Bunaes DF, Drengenes C, Engström G, Klinge B, Lie SA, Nilsson PM, Jönsson D, Malinovschi A. Periodontitis is associated with airflow obstruction in the Malmö Offspring Dental Study. J Clin Periodontol 2024; 51:86-96. [PMID: 37837290 DOI: 10.1111/jcpe.13886] [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: 01/03/2023] [Revised: 08/31/2023] [Accepted: 09/16/2023] [Indexed: 10/15/2023]
Abstract
AIM To investigate the association between periodontitis and lung function in the Malmö Offspring Dental Study. MATERIALS AND METHODS In all 1001 individuals (49.9% female, mean age: 44.6) from Malmö Offspring Dental Study were included. Periodontitis was assessed by a full-mouth examination protocol including bleeding on probing and classified according to the American Academy of Periodontology/Center for Disease Control definitions. Forced expiratory volume in 1 s (FEV1 ) and forced vital capacity (FVC) were expressed as absolute values and %predicted according to Global Lung Function Initiative reference values. FEV1 , FVC and FEV1 /FVC were analysed in relation to periodontal status using linear regression. RESULTS Severe periodontitis was found in 7% of the population. Adjusted regression models showed significant associations between lung function and severe periodontitis with 2.1 unit lower FEV1 /FVC ratio (95% CI: -3.91, -0.23) and odds ratio (adjusted) of 2.56 (95% CI: 1.40, 4.75, p = .003) for airflow obstruction (FEV1 /FVC less than the lower limit of normal) if having severe periodontitis. Lower values of %predicted FEV1 and %predicted FVC, but not FEV1 /FVC, were found in individuals with >25% bleeding on probing. CONCLUSIONS Severe periodontitis was associated with lower FEV1 /FVC ratio and airflow obstruction in the present cohort. More large-scale prospective studies and intervention studies are required for a comprehensive evaluation.
Collapse
Affiliation(s)
- Anders Røsland
- Department of Clinical Dentistry, Section of Periodontics, University of Bergen, Bergen, Norway
| | - Randi J Bertelsen
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Oral Health Centre of Expertise in Western Norway, Bergen, Norway
| | - Dagmar F Bunaes
- Department of Clinical Dentistry, Section of Periodontics, University of Bergen, Bergen, Norway
| | | | - Gunnar Engström
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Bjørn Klinge
- Faculty of Odontology, Malmö University, Malmö, Sweden
- Department of Dental Medicine, Karolinska Institutet, Solna, Sweden
| | - Stein-Atle Lie
- Department of Clinical Dentistry, Section of Periodontics, University of Bergen, Bergen, Norway
| | - Peter M Nilsson
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Daniel Jönsson
- Department of Clinical Sciences, Lund University, Malmö, Sweden
- Faculty of Odontology, Malmö University, Malmö, Sweden
- Public Dental Service of Skåne, Lund, Sweden
| | - Andrei Malinovschi
- Department of Medical Sciences, Clinical Physiology, Uppsala University, Uppsala, Sweden
| |
Collapse
|
3
|
Li R, Deng M, Lin Y, Gao W, Liu B, Xia H. Genetically predicted circulating levels of glycine, glutamate, and serotonin in relation to the risks of three major neurodegenerative diseases: A Mendelian randomization analysis. Front Aging Neurosci 2022; 14:938408. [PMID: 36158554 PMCID: PMC9490425 DOI: 10.3389/fnagi.2022.938408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
It has been previously postulated that blood neurotransmitters might affect risks of neurodegenerative diseases. Here, a Mendelian Randomization (MR) study was conducted to explore whether genetically predicted concentrations of glycine, glutamate and serotonin were associated with risks of Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS). From three genome-wide association studies of European ancestry, single nucleotide polymorphisms strongly associated with glycine, glutamate and serotonin were selected as genetic instrumental variables. Corresponding summary statistics were also obtained from the latest genome-wide association meta-analyses of AD, PD and ALS. The inverse-variance weighted MR and multiple sensitivity analyses were performed to evaluate causal effects of genetically predicted levels of neurotransmitters on risks of neurodegenerative diseases. The statistical significance threshold was set at P < 0.0056 using the Bonferroni-correction, while 0.0056 < P < 0.05 was considered suggestive evidence for a causal association. There was a causal association of elevated blood glutamate levels with higher AD risks. The odds ratio (OR) of AD was 1.311 [95% confidence interval (CI), 1.087-1.580; P = 0.004] per one standard deviation increase in genetically predicted glutamate concentrations. There was suggestive evidence in support of a protective effect of blood serotonin on AD (OR = 0.607; 95% CI, 0.396-0.932; P = 0.022). Genetically predicted glycine levels were not associated with the risk of AD (OR = 1.145; 95% CI, 0.939-1.396; P = 0.180). Besides, MR analyses indicated no causal roles of three blood neurotransmitters in PD or ALS. In conclusion, the MR study provided evidence supporting the association of elevated blood glutamate levels with higher AD risks and the association of increased blood serotonin levels with lower AD risks. Triangulating evidence across further study designs is still warranted to elucidate the role of blood neurotransmitters in risks of neurodegenerative diseases.
Collapse
Affiliation(s)
- Ruizhuo Li
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Provincial Key Laboratory of Research in Structure Birth Defect Disease, Guangzhou, China
| | - Mengjuan Deng
- Department of Anesthesiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Yuhong Lin
- Zhongshan School of Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wenjing Gao
- Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Provincial Key Laboratory of Research in Structure Birth Defect Disease, Guangzhou, China
| | - Bohao Liu
- Xiangya School of Medicine, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Huimin Xia
- School of Medicine, South China University of Technology, Guangzhou, China.,Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangdong Provincial Clinical Research Center for Child Health, Provincial Key Laboratory of Research in Structure Birth Defect Disease, Guangzhou, China
| |
Collapse
|
4
|
Dong J, Gong Y, Chu T, Wu L, Li S, Deng H, Hu R, Wang Y. Mendelian randomization highlights the causal association of obesity with periodontal diseases. J Clin Periodontol 2022; 49:662-671. [PMID: 35569024 DOI: 10.1111/jcpe.13640] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/21/2022] [Accepted: 04/26/2022] [Indexed: 12/11/2022]
Abstract
AIM The underlying mechanisms connecting obesity and periodontal diseases remain unclear. This study investigates the potential causal association of obesity with periodontal diseases using Mendelian randomization (MR). MATERIALS AND METHODS Single-nucleotide polymorphisms of obesity traits including body mass index (BMI), waist circumference (WC), and WC adjusted for BMI (WCadjBMI) from large-scale genome-wide association studies were screened for instrumental variables. The single trait periodontitis and the combined trait comprising periodontitis and loose teeth were adopted as surrogates for periodontal diseases. Inverse-variance weighted (IVW), series of sensitivity analyses and multivariable MR were employed to determine the association of obesity with periodontal diseases. RESULTS IVW results showed that per 1-SD increment in BMI (odds ratio, OR = 1.115; 95% confidence interval [CI] = 1.064-1.169; p < .001) and WC (OR = 1.117; 95% CI = 1.052-1.185; p < .001), but not WCadjBMI, were significantly associated with an increased risk of periodontitis/loose teeth. Moreover, the MR estimates were consistent across other MR sensitivity analyses and multivariable MR. However, a causal association of obesity with the single trait periodontitis was not identified. CONCLUSIONS The presented evidence supports previous epidemiological findings by showing a potential causal association of genetic liability to obesity with periodontal diseases. The biological mechanisms underlying this association warrant further investigation.
Collapse
Affiliation(s)
- Jingya Dong
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yixuan Gong
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Tengda Chu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lixia Wu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Sisi Li
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hui Deng
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Rongdang Hu
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Wang
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| |
Collapse
|