Article ; Online: Associations Between Temporomandibular Disorders and Brain Imaging-Derived Phenotypes.
2024
Abstract: Objective: Temporomandibular disorders (TMD) affect the temporomandibular joint and associated structures. Despite its prevalence and impact on quality of life, the underlying mechanisms of TMD remain unclear. Magnetic resonance imaging studies suggest ... ...
Abstract | Objective: Temporomandibular disorders (TMD) affect the temporomandibular joint and associated structures. Despite its prevalence and impact on quality of life, the underlying mechanisms of TMD remain unclear. Magnetic resonance imaging studies suggest brain abnormalities in patients with TMD. However, these lines of evidence are essentially observational and cannot infer a causal relationship. This study employs Mendelian randomisation (MR) to probe causal relationships between TMD and brain changes. Methods: Genome-wide association study (GWAS) summary statistics for TMD were collected, along with brain imaging-derived phenotypes (IDPs). Instrumental variables were selected from the GWAS summary statistics and used in bidirectional 2-sample MR analyses. The inverse-variance weighted analysis was chosen as the primary method. In addition, false discovery rate (FDR) correction of P value was used. Results: Eleven IDPs related to brain imaging alterations showed significant causal associations with TMD (P-FDR < .05), validated through sensitivity analysis. In forward MR, the mean thickness of left caudal middle frontal gyrus (OR, 0.76; 95% CI, 0.67-0.87; P-FDR = 1.15 × 10 Conclusions: This study provides genetic evidence supporting the bidirectional causal associations between TMD and brain IDPs, shedding light on potential neurobiological mechanisms underlying TMD development and its relationship with brain structure. |
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Language | English |
Publishing date | 2024-02-15 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 218262-2 |
ISSN | 1875-595X ; 0020-6539 |
ISSN (online) | 1875-595X |
ISSN | 0020-6539 |
DOI | 10.1016/j.identj.2024.01.008 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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