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Lin J, Cao DY. Associations Between Temporomandibular Disorders and Brain Imaging-Derived Phenotypes. Int Dent J 2024; 74:784-793. [PMID: 38365503 PMCID: PMC11287171 DOI: 10.1016/j.identj.2024.01.008] [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: 10/08/2023] [Revised: 12/29/2023] [Accepted: 01/14/2024] [Indexed: 02/18/2024] Open
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 × 10-2) and the volume of right superior frontal gyrus (OR, 1.24; 95% CI, 1.10-1.39; P-FDR = 2.26 × 10-2) exerted significant causal effects on TMD. In the reverse MR analysis, TMD exerted a significant causal effect on 9 IDPs, including the mean thickness of the left medial orbitofrontal cortex (β = -0.10; 95% CI, -0.13 to -0.08; P-FDR = 2.06 × 10-11), the volume of the left magnocellular nucleus (β = -0.15; 95% CI, -0.22 to -0.09; P-FDR = 3.26 × 10-4), the mean intensity of the right inferior-lateral ventricle (β = -0.09; 95% CI, -0.14 to -0.04; P-FDR = 2.23 × 10-2), the volume of grey matter in the anterior division of the left superior temporal gyrus (β = 0.09; 95% CI, 0.04-0.14; P-FDR = 1.69 × 10-2), and so forth. 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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Affiliation(s)
- Jun Lin
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, Xi'an, Shaanxi, China
| | - Dong-Yuan Cao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, Xi'an, Shaanxi, China.
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2
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Gerra MC, Dallabona C, Manfredini M, Giordano R, Capriotti C, González-Villar A, Triñanes Y, Arendt-Nielsen L, Carrillo-de-la-Peña MT. The polymorphism Val158Met in the COMT gene: disrupted dopamine system in fibromyalgia patients? Pain 2024:00006396-990000000-00635. [PMID: 38916531 DOI: 10.1097/j.pain.0000000000003313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 05/18/2024] [Indexed: 06/26/2024]
Abstract
ABSTRACT The single-nucleotide polymorphism (SNP) rs4680 in the catechol-O-methyltransferase gene ( COMT ) is a missense variant (Val158Met) associated with altered activity of the COMT enzyme and suggested as a predictive feature for developing some chronic pain conditions. However, there are controversial results on its role in fibromyalgia (FM). Here, the SNP Val158Met was analyzed in 294 FM patients (without comorbidities) and 209 healthy controls (without chronic pain). The concurrent impact of Val158Met genotypes and FM comorbid disorders (depression and sleep impairment) on FM risk were tested. In addition, the genotypic distribution of FM patients in relation to pain intensity was evaluated. The G allele (Val) resulted in being more represented in the FM group (57.8%) compared with the control group (48.8%; P = 0.037). Logistic regression highlighted that having the G/G (Val/Val) homozygous genotype was associated with 2 times higher risk of having FM compared with the A/A (Met/Met) carriers ( P = 0.038), whereas depression and sleep impairment increased FM risk by 12 and 8 times, respectively ( P < 0.001). However, considering only the FM patient group, the A/A homozygous genotype was significantly associated with severe pain intensity ( P = 0.007). This study highlighted associations between the SNP Val158Met and both FM and pain intensity, suggesting a link between dopaminergic dysfunction and vulnerability to chronic pain. Further studies should explore this SNP in FM patients in conjunction with COMT enzymatic activity and other symptoms connected with the dopaminergic system such as depression or sleep impairment.
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Affiliation(s)
- Maria Carla Gerra
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Cristina Dallabona
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Matteo Manfredini
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parma, Italy
| | - Rocco Giordano
- Center for Neuroplasticity and Pain (CNAP), SMI®, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Camilla Capriotti
- Center for Neuroplasticity and Pain (CNAP), SMI®, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Alberto González-Villar
- Psychological Neuroscience Lab, Psychology Research Centre, School of Psychology, University of Minho, Braga, Portugal
| | - Yolanda Triñanes
- Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI®, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
- Department of Gastroenterology & Hepatology, Mech-Sense, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Denmark, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
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3
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Nordblom N, Büttner M, Schwendicke F. Artificial Intelligence in Orthodontics: Critical Review. J Dent Res 2024; 103:577-584. [PMID: 38682436 PMCID: PMC11118788 DOI: 10.1177/00220345241235606] [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] [Indexed: 05/01/2024] Open
Abstract
With increasing digitalization in orthodontics, certain orthodontic manufacturing processes such as the fabrication of indirect bonding trays, aligner production, or wire bending can be automated. However, orthodontic treatment planning and evaluation remains a specialist's task and responsibility. As the prediction of growth in orthodontic patients and response to orthodontic treatment is inherently complex and individual, orthodontists make use of features gathered from longitudinal, multimodal, and standardized orthodontic data sets. Currently, these data sets are used by the orthodontist to make informed, rule-based treatment decisions. In research, artificial intelligence (AI) has been successfully applied to assist orthodontists with the extraction of relevant data from such data sets. Here, AI has been applied for the analysis of clinical imagery, such as automated landmark detection in lateral cephalograms but also for evaluation of intraoral scans or photographic data. Furthermore, AI is applied to help orthodontists with decision support for treatment decisions such as the need for orthognathic surgery or for orthodontic tooth extractions. One major challenge in current AI research in orthodontics is the limited generalizability, as most studies use unicentric data with high risks of bias. Moreover, comparing AI across different studies and tasks is virtually impossible as both outcomes and outcome metrics vary widely, and underlying data sets are not standardized. Notably, only few AI applications in orthodontics have reached full clinical maturity and regulatory approval, and researchers in the field are tasked with tackling real-world evaluation and implementation of AI into the orthodontic workflow.
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Affiliation(s)
- N.F. Nordblom
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - M. Büttner
- Department of Oral Diagnostics, Digital Health and Health Services Research, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - F. Schwendicke
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians University of Munich, Munich, Germany
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4
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Nava-Bringas TI, Manrique CMJ, González-Huerta NC, Morales-Hernández E, Miranda-Duarte A. COMT and SCN9A gene variants do not contribute to chronic low back pain in Mexican-Mestizo patients. Acta Neurochir (Wien) 2024; 166:73. [PMID: 38329587 DOI: 10.1007/s00701-024-05937-y] [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: 07/13/2023] [Accepted: 11/26/2023] [Indexed: 02/09/2024]
Abstract
BACKGROUND Chronic low back pain (CLBP) is a complex condition in which genetic factors play a role in its susceptibility. Catechol-O-methyltransferase (COMT) and sodium channel NaV1.7 (SCN9A) genes are implicated in pain perception. The aim is to analyze the association of COMT and SCN9A with CLBP and their interaction, in a Mexican-Mestizo population. METHODS A case-control study was conducted. Cases corresponded to adults of both sexes with CLBP. Controls were adults with no CLBP. Variants of SCN9A and COMT were genotyped. Allelic and genotypic frequencies and Hardy-Weinberg equilibrium (HWE) were calculated. Association was tested under codominant, dominant, and recessive models. Multifactor dimensionality reduction was developed to detect epistasis. RESULTS Gene variants were in HWE, and there was no association under different inheritance models in the whole sample. In women, in codominant and dominant models, a trend to a high risk was observed for AA of rs4680 of COMT (OR = 1.7 [0.5-5.3] and 1.6 [0.7-3.4]) and for TT of rs4633 (OR = 1.6 [0.7-3.7] and 1.6 [0.7-3.4]). In men, a trend to low risk was observed for AG genotype of rs4680 in the same models (OR = 0.6 [0.2-1.7] and 0.7 [0.3-1.7]), and for TC genotype of rs4633 in the codominant model (OR = 0.6 [0.2-1.7]). In the interaction analysis, a model of the SCN9A and COMT variants showed a CVC of 10/10; however, the TA was 0.4141. CONCLUSION COMT and SCN9A variants are not associated with CLBP in the analyzed Mexican-Mestizo population.
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Affiliation(s)
- Tania Inés Nava-Bringas
- Department of Orthopedic Rehabilitation, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Av. México-Xochimilco 289, Colonia Arenal de Guadalupe, Tlalpan, 14389, Mexico City, Mexico
| | - Carlos Manuel Juaristi Manrique
- Department of Genomic Medicine, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Av. México-Xochimilco 289, Colonia Arenal de Guadalupe, Tlalpan, 14389, Mexico City, Mexico
| | - Norma Celia González-Huerta
- Department of Genomic Medicine, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Av. México-Xochimilco 289, Colonia Arenal de Guadalupe, Tlalpan, 14389, Mexico City, Mexico
| | - Eugenio Morales-Hernández
- Radiology Service, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Av. México-Xochimilco 289, Colonia Arenal de Guadalupe, Tlalpan, 14389, Mexico City, Mexico
| | - Antonio Miranda-Duarte
- Department of Genomic Medicine, Instituto Nacional de Rehabilitación "Luis Guillermo Ibarra Ibarra", Av. México-Xochimilco 289, Colonia Arenal de Guadalupe, Tlalpan, 14389, Mexico City, Mexico.
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5
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Ekici Ö, Arıkan Söylemez ES. The association of gene polymorphisms in catechol-O'methyltransferase (COMT) and β2-adrenergic receptor (ADRB2) with temporomandibular joint disorders. Arch Oral Biol 2024; 158:105859. [PMID: 38043362 DOI: 10.1016/j.archoralbio.2023.105859] [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: 07/13/2023] [Revised: 11/16/2023] [Accepted: 11/26/2023] [Indexed: 12/05/2023]
Abstract
OBJECTIVE Temporomandibular disorder (TMD) has a multifactorial etiology that includes environmental, psychological, and genetic factors. This study aimed to evaluate the possible relationship between polymorphisms in Catechol-O-methyltransferase (COMT) and β2-adrenergic receptor (ADRB2) genes with TMD. DESIGN This observational case-control study included 80 patients and 70 healthy controls. The diagnosis of TMD was made using the diagnostic criteria for TMD and the following TMD categories were used for the case group: muscular TMD and articular TMD (disc displacement and arthralgia). A genotyping study of gene polymorphisms in COMT (rs 9332377) and ADRB2 (rs20530449) was performed from genomic DNA isolated from blood. The chi-square test was used to analyze the relationships. P < 0.05 was accepted as a significant difference. RESULTS The polymorphic TT and CT genotype for COMT (rs rs9332377) was significantly higher in the articular TMD group while the non-polymorphic CC genotype was significantly lower in the articular TMD group (P < 0.05). Regarding ADRB2 (rs20530449), the polymorphic GG genotype was similarly considerably more common in the articular TMD group (p < 0.05). In addition, the T allele in the COMT (rs rs9332377) gene was found to be significantly higher in the articular TMD group (p < 0.05). CONCLUSIONS In the Turkish population, gene polymorphisms in COMT (rs9332377) and ADRB2 (rs2053044) were associated with articular TMD. This study supports the hypothesis that changes in COMT and ADRB2 genes may play a role in temporomandibular joint pain and predisposition to TMD.
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Affiliation(s)
- Ömer Ekici
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey.
| | - Evrim Suna Arıkan Söylemez
- Department of Medical Biology, Faculty of Medicine, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey.
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6
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Baldiotti ALP, Amaral-Freitas G, Barbosa MCF, Moreira PR, Machado RA, Coletta RD, Meger MN, Paiva SM, Scariot R, Ferreira FDM. Associations between Anxiety, Depression, Chronic Pain and Oral Health-Related Quality of Life, Happiness, and Polymorphisms in Adolescents' Genes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3321. [PMID: 36834016 PMCID: PMC9967116 DOI: 10.3390/ijerph20043321] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Adolescence is marked by changes and vulnerability to the emergence of psychological problems. This study aimed to investigate associations between anxiety/depression/chronic pain and oral health-related quality of life (OHRQoL)/happiness/polymorphisms in the COMT, HTR2A and FKBP5 genes in Brazilian adolescents. A cross-sectional study was conducted with ninety adolescents 13 to 18 years. Anxiety, depression and chronic pain were evaluated using the RDC/TMD. The Oral Health Impact Profile was used to assess oral OHRQoL. The Subjective Happiness Scale was used to assess happiness. Single-nucleotide polymorphisms in COMT (rs165656, rs174675), HTR2A (rs6313, rs4941573) and FKBP5 (rs1360780, rs3800373) were genotyped using the Taqman® method. Bivariate and multivariate logistic regression analyses were performed (p < 0.05). Chronic pain and depression were associated with feelings of happiness (p < 0.05). A significant inverse association was found between anxiety and OHRQoL (p = 0.004). The presence of minor allele C of COMT rs174675 was significantly associated with depression (p = 0.040). Brazilian adolescents with depression and chronic pain considers themselves to be less happy than others and those with anxiety are more likely to have a negative impact on OHRQoL. Moreover, the rs174675 variant allele in the COMT gene was associated with depressive symptoms in Brazilian adolescents.
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Affiliation(s)
- Ana Luiza Peres Baldiotti
- Department of Pediatric Dentistry, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Gabrielle Amaral-Freitas
- Department of Pediatric Dentistry, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | | | - Paula Rocha Moreira
- Department of Morphology, Institute of Biological Sciences (ICB), Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Renato Assis Machado
- Department of Oral Diagnosis and Graduate Program in Oral Biology, School of Dentistry, University of Campinas, Piracicaba 13414-903, SP, Brazil
| | - Ricardo Della Coletta
- Department of Oral Diagnosis and Graduate Program in Oral Biology, School of Dentistry, University of Campinas, Piracicaba 13414-903, SP, Brazil
| | | | - Saul Martins Paiva
- Department of Pediatric Dentistry, Federal University of Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Rafaela Scariot
- Departament of Oral Surgery and Maxilofacial, Federal University of Paraná, Curitiba 81530-000, PR, Brazil
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7
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Baratto SSP, Meger MN, Camargo V, Nolasco GMC, Mattos NHR, Roskamp L, Stechman-Neto J, Madalena IR, Küchler EC, Baratto-Filho F. Temporomandibular disorder in construction workers associated with ANKK1 and DRD2 genes. Braz Dent J 2022; 33:12-20. [PMID: 36043564 PMCID: PMC9645185 DOI: 10.1590/0103-6440202204963] [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: 03/11/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022] Open
Abstract
The study aimed to explore the influence of genetic polymorphisms in ANKK1 and
DRD2 on the signs and symptoms of temporomandibular disorder (TMD) in
construction workers. This cross-sectional study included only male subjects.
All construction workers were healthy and over 18 years age. Illiterate workers
and functionally illiterate workers were excluded. The diagnosis of TMD was
established according to the Research Diagnostic Criteria for TMD (RDC/TMD).
Genomic DNA was used to evaluate the genetic polymorphisms ANKK1 (rs1800497) and
DRD2 (rs6275; rs6276) using Real-Time PCR. Chi-square or Fisher exact tests were
used to evaluate genotypes and allele distribution among the studied phenotypes.
The established alpha of this study was 5%. The sample included a total of 115
patients. The age of the patients ranged from 19 to 70 years (mean age 38.2;
standard deviation 11.7). Chronic pain (87.7%), disc displacement (38.2%), and
joint inflammation (26.9%) were the most frequently observed signs and symptoms.
The genetic polymorphism rs6276 in DRD2 was associated with chronic pain
(p=0.033). In conclusion, our study suggests that genetic polymorphisms in DRD2
and ANKK1 may influence TMD signs and symptoms in a group of male construction
workers.
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Affiliation(s)
| | | | - Vânia Camargo
- School of Health Sciences, Positivo University, Curitiba, Paraná, Brazil
| | | | | | - Liliane Roskamp
- School of Dentistry, University of Tuiuti of Paraná, Curitiba, Paraná, Brazil
| | - José Stechman-Neto
- School of Dentistry, University of Tuiuti of Paraná, Curitiba, Paraná, Brazil
| | - Isabela Ribeiro Madalena
- School of Dentistry, University of the Joinville Region, Joinville, Santa Catarina, Brazil.,School of Dentistry, Presidente Tancredo de Almeida Neves University Center, São João del Rei, Minas Gerais, Brazil.,Department of Restorative Dentistry, School of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Erika Calvano Küchler
- School of Dentistry, University of Tuiuti of Paraná, Curitiba, Paraná, Brazil.,Department of Orthodontics, University of Regensburg, Regensburg, Germany
| | - Flares Baratto-Filho
- School of Dentistry, University of Tuiuti of Paraná, Curitiba, Paraná, Brazil.,School of Dentistry, University of the Joinville Region, Joinville, Santa Catarina, Brazil
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Jayaseelan VP, Arumugam P. A Computational Data Mining Strategy to Identify the Common Genetic Markers of Temporomandibular Joint Disorders and Osteoarthritis. Glob Med Genet 2022; 9:159-165. [PMID: 35707787 PMCID: PMC9192168 DOI: 10.1055/s-0042-1743571] [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: 12/27/2021] [Accepted: 01/27/2022] [Indexed: 11/27/2022] Open
Abstract
Statement of Problem
Prosthodontic planning in patients with temporomandibular joint disorders (TMDs) is a challenge for the clinicians.
Purpose
A differential biomarker identification could aid in developing methods for early detection and confirmation of TMD from other related conditions.
Materials and Methods
The present study identified candidate genes with possible association with TMDs. The observational study delineates genes from three datasets retrieved from DisGeNET database. The convergence of datasets identifies potential genes related to TMDs with associated complication such as osteoarthritis. Gene ontology analysis was also performed to identify the potential pathways associated with the genes belonging to each of the datasets.
Results
The preliminary analysis revealed vascular endothelial growth factor A (
VEGFA
), interleukin 1 β (
IL1B
, and estrogen receptor 1 (
ESR1
) as the common genes associated with all three phenotypes assessed. The gene ontology analysis revealed functional pathways in which the genes of each dataset were clustered. The chemokine and cytokine signaling pathway, gonadotropin-releasing hormone receptor pathway, cholecystokinin receptors (CCKR) signaling, and tumor growth factor (TGF)-β signaling pathway were the pathways most commonly associated with the phenotypes. The genes
CCL2, IL6
, and
IL1B
were found to be the common genes across temporomandibular joint (TMJ) and TMJ + osteoarthritis (TMJ-OA) datasets.
Conclusion
Analysis through computational approach has revealed
IL1B
as the crucial candidate gene which could have a strong association with bone disorders. Nevertheless, several immunological pathways have also identified numerous genes showing putative association with TMJ and other related diseases. These genes have to be further validated using experimental approaches to acquire clarity on the mechanisms related to the pathogenesis.
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Affiliation(s)
- Vijayashree Priyadharsini Jayaseelan
- Clinical Genetics Lab, Cellular and Molecular Research Centre, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Poonamallee High Road, Chennai, Tamil Nadu, India
| | - Paramasivam Arumugam
- Molecular Biology Lab, Cellular and Molecular Research Centre, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Poonamallee High Road, Chennai, Tamil Nadu, India
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Louca Jounger S, Christidis N, Hedenberg-Magnusson B, List T, Svensson P, Schalling M, Ernberg M. Polymorphisms in the HTR2A and HTR3A Genes Contribute to Pain in TMD Myalgia. FRONTIERS IN ORAL HEALTH 2022; 2:647924. [PMID: 35047998 PMCID: PMC8757775 DOI: 10.3389/froh.2021.647924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Background: The aim of this study was to investigate if single nucleotide polymorphisms (SNPs) related to monoaminergic neurotransmission, in particular the serotonergic pathway, contribute to pain perception in patients with temporomandibular disorder (TMD) myalgia and if there is a correlation to jaw function as well as psychosocial factors such as stress, anxiety and depression. Materials and Methods: One hundred and seventeen individuals with TMD myalgia were included. A venous blood or saliva sample was taken for genetic analyses and genotyped regarding HTR2A (rs9316233) HTR3A (rs1062613), HTR3B (rs1176744), SERT (5-HTTLPR) and COMT (rs4680). A clinical examination according to Diagnostic Criteria for TMD (DC/TMD) was performed and axis II data (psychosocial factors) were compared between participants with different genotypes for each gene using Kruskall–Wallis test. The characteristic pain intensity (CPI) was tested for correlations to scores for the Perceived Stress Scale, Generalized Anxiety Disorder, and Patient Health Questionnaires using Spearman's rank correlation test with Bonferroni correction for multiple testing. To further explore data factor analysis was performed to identify latent factors associated to the outcome variables. Results: Participants carrying at least one copy of the rare allele of the HTR2A (rs9316233) and HTR3A (rs1062613) had higher CPI compared with the participants with the homozygous common genotype (P = 0.042 and P = 0.024, respectively). Correlation analyses showed several significant positive correlations between CPI on one hand, and self-reported psychosocial distress and jaw function on the other hand for several genotypes that mostly were weak to moderate. The factor analysis identified two latent variables. One was positively correlated to the HTR3B gene, jaw function and self-reported parafunctions, and the other was positively correlated to psychological distress and negatively correlated to SERT. Conclusion: Taken together, the polymorphism rs1062613 in the HTR3A gene contributes to pain intensity in TMD myalgia. This together with positive interactions between pain variables and psychological factors in genotypes strengthens that pain and psychological distress are related. Further research is needed to explore this as well as the influence of gene-to-gene interactions on pain and psychological distress.
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Affiliation(s)
- Sofia Louca Jounger
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
| | - Nikolaos Christidis
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
| | - Britt Hedenberg-Magnusson
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden.,Department of Orofacial Pain and Jaw Function, Folktandvården Eastmaninstitutet, Stockholm, Sweden
| | - Thomas List
- Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden.,Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Peter Svensson
- Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden.,Department of Orofacial Pain and Jaw Function, Faculty of Odontology, Malmö University, Malmö, Sweden.,Section of Orofacial Pain and Jaw Function, Department of Dentistry and Oral Health, University of Aarhus, Aarhus, Denmark
| | - Martin Schalling
- Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Malin Ernberg
- Division of Oral Diagnostics and Rehabilitation, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Scandinavian Center for Orofacial Neurosciences (SCON), Huddinge, Sweden
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10
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Duarte J, Pauletto P, Polmann H, Réus JC, de Souza JF, Gaio DC, Brancher JA, Vieira A, Machado-Souza C, de Souza Melo G, Maia IS, De Luca Canto G. Is there an association of genetic polymorphisms of the catechol-O-methyltransferase gene (rs165656 and rs174675) and the 5-hydroxytryptamine receptor 2A gene (rs4941573 and rs6313) with sleep bruxism in individuals with obstructive sleep apnea? Arch Oral Biol 2021; 133:105315. [PMID: 34808513 DOI: 10.1016/j.archoralbio.2021.105315] [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: 08/22/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 01/21/2023]
Abstract
OBJECTIVE To evaluate the association of single-nucleotide polymorphisms within the catechol-O-methyltransferase and 5-hydroxytryptamine receptor 2A genes with sleep bruxism in individuals diagnosed with obstructive sleep apnea. DESIGN Sixty-nine individuals with suspected sleep-related problems were evaluated by polysomnography, following the recommendations of the American Academy of Sleep Medicine. Deoxyribonucleic acid (DNA) samples were collected only from 48 of the study participants because of missing polysomnographic data. DNA samples were collected and two single-nucleotide polymorphisms in the 5-hydroxytryptamine receptor 2A encoding HTR2A gene (rs4941573 and rs6313) and two in the catechol-O-methyltransferase gene (rs165656 and rs174675) were selected to be genotyped using real-time polymerase chain reaction. The association between sleep bruxism and genetic polymorphisms was investigated by recessive and dominant models. Association analyses were performed using a 95% confidence interval and the level of statistical significance was p < 0.05. RESULTS From the 69 study participants, 48 were included in the polymorphism analysis and sleep bruxism was present in 35.4%. No significant differences were observed in the dominant and recessive models (p > 0.05). Haplotype and diplotype analyses revealed the predicted four haplotypes and two diplotypes were not associated with sleep bruxism. CONCLUSION Polymorphisms rs174675 and rs165656 in the catechol-O-methyltransferase gene and rs4941573 and rs6313 in the 5-hydroxytryptamine receptor 2A gene were not significantly associated with sleep bruxism in individuals with obstructive sleep apnea.
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Affiliation(s)
- Joyce Duarte
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil.
| | - Patrícia Pauletto
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Helena Polmann
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Jéssica Conti Réus
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | | | | | - André Vieira
- Graduate Program in Biotechnology Applied to Child and Adolescent Health - Pequeno Príncipe College, Pelé Research Institute, Curitiba, Paraná, Brazil
| | - Cleber Machado-Souza
- Graduate Program in Biotechnology Applied to Child and Adolescent Health - Pequeno Príncipe College, Pelé Research Institute, Curitiba, Paraná, Brazil
| | - Gilberto de Souza Melo
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Graziela De Luca Canto
- Brazilian Center for Evidence-Based Research (COBE), Federal University of Santa Catarina, Florianópolis, Brazil; Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
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Korczeniewska OA, Kuo F, Huang CY, Nasri-Heir C, Khan J, Benoliel R, Hirschberg C, Eliav E, Diehl SR. Genetic variation in catechol-O-methyltransferase is associated with individual differences in conditioned pain modulation in healthy subjects. J Gene Med 2021; 23:e3374. [PMID: 34156736 PMCID: PMC9926975 DOI: 10.1002/jgm.3374] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/10/2021] [Accepted: 06/20/2021] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Genetic variation in the catechol-O-methyltransferase (COMT) gene is associated with sensitivity to both acute experimental pain and chronic pain conditions. Four single nucleotide polymorphisms (SNPs) have traditionally been used to infer three common haplotypes designated as low, average and high pain sensitivity and are reported to affect both COMT enzymatic activity and pain sensitivity. One mechanism that may partly explain individual differences in sensitivity to pain is conditioned pain modulation (CPM). We hypothesized that variation in CPM may have a genetic basis. METHODS We evaluated CPM in 77 healthy pain-free Caucasian subjects by applying repeated mechanical stimuli to the dominant forearm using 26-g von Frey filament as the test stimulus with immersion of the non-dominant hand in hot water as the conditioning stimulus. We assayed COMT SNP genotypes by the TaqMan method using DNA extracted from saliva. RESULTS SNP rs4680 (val158 met) was not associated with individual differences in CPM. However, CPM was associated with COMT low pain sensitivity haplotypes under an additive model (p = 0.004) and the effect was independent of gender. CONCLUSIONS We show that, although four SNPs are used to infer COMT haplotypes, the low pain sensitivity haplotype is determined by SNP rs6269 (located in the 5' regulatory region of COMT), suggesting that inherited variation in gene expression may underlie individual differences in pain modulation. Analysis of 13 global populations revealed that the COMT low pain sensitivity haplotype varies in frequency from 13% to 44% and showed that two SNPs are sufficient to distinguish all COMT haplotypes in most populations.
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Affiliation(s)
- Olga A. Korczeniewska
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Fengshen Kuo
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ching-Yu Huang
- School of Computer Science and Technology, Kean University, Union, NJ, USA
| | - Cibele Nasri-Heir
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Junad Khan
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Rafael Benoliel
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Craig Hirschberg
- Department of Endodontics, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Eli Eliav
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Scott R. Diehl
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
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