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Bhattacharjee B, Saneja R, Bhatnagar A, Gupta P. Effect of dopaminergic agonist group of drugs in treatment of sleep bruxism: A systematic review. J Prosthet Dent 2021; 127:709-715. [PMID: 33455727 DOI: 10.1016/j.prosdent.2020.11.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 01/02/2023]
Abstract
STATEMENT OF PROBLEM Various factors are responsible for sleep bruxism; however, whether the dopaminergic agonist group of drugs is effective in the treatment of sleep bruxism is unclear. PURPOSE The purpose of this systematic review was to evaluate the effect of the dopaminergic agonist group of drugs in controlling sleep bruxism in comparison with no treatment or placebo-controlled treatment. MATERIAL AND METHODS Two electronic databases, PubMed and Cochrane Central, were searched by using the keywords bruxism, sleep bruxism, dopamine, and dopamine agonist. After screening titles and abstracts, only those articles which met predefined inclusion criteria were selected for full-text assessment. Clinical trials using the dopaminergic agonist group of drugs as a treatment approach to sleep bruxism were included. RESULTS The literature search yielded a total of 64 articles from the 2 electronic databases (PubMed, 53; Cochrane Central, 11). After removal of the duplicates (n=8), the initial screening of titles and abstracts was performed by 2 independent reviewers, removing 46 articles. A total of 10 articles were selected for full-text reading, and 4 studies were included for qualitative analysis. CONCLUSIONS Levodopa (L-DOPA) and Bromocriptine showed decrease in root mean square value in electromyography per bruxism burst (P<.001) and 20% to 30% reduction of bruxism episodes during sleep in 2 different studies. However, treatment with bromocriptine led to conflicting result in another study in terms of frequency of bruxism episodes and amplitude of muscle contractions in electromyography (EMG). Bruxism bursts and episodes were also not significantly improved with another dopaminergic agonist group of drugs, Pramipexole (P>.001). Based on the limited evidence and conflicting results, significant conclusions cannot be generated, and further studies are required.
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Affiliation(s)
- Bappaditya Bhattacharjee
- Junior Resident, Department of Prosthodontics, Faculty of Dental sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
| | - Ritu Saneja
- Junior Resident, Department of Prosthodontics, Faculty of Dental sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Atul Bhatnagar
- Professor, Department of Prosthodontics, Faculty of Dental sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Pinki Gupta
- Junior Resident, Department of Prosthodontics, Faculty of Dental sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Perego MC, Morrell BC, Zhang L, Schütz LF, Spicer LJ. Developmental and hormonal regulation of ubiquitin-like with plant homeodomain and really interesting new gene finger domains 1 gene expression in ovarian granulosa and theca cells of cattle. J Anim Sci 2020; 98:5866609. [PMID: 32614952 DOI: 10.1093/jas/skaa205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/25/2020] [Indexed: 12/27/2022] Open
Abstract
Ubiquitin-like with plant homeodomain and really interesting new gene finger domains 1 (UHRF1) is a multi-domain nuclear protein that plays an important role in epigenetics and tumorigenesis, but its role in normal ovarian follicle development remains unknown. Thus, the present study evaluated if UHRF1 mRNA abundance in bovine follicular cells is developmentally and hormonally regulated, and if changes in UHRF1 are associated with changes in DNA methylation in follicular cells. Abundance of UHRF1 mRNA was greater in granulosa cells (GC) and theca cells (TC) from small (<6 mm) than large (≥8 mm) follicles and was greater in small-follicle GC than TC. In GC and TC, fibroblast growth factor 9 (FGF9) treatment increased (P < 0.05) UHRF1 expression by 2-fold. Also, luteinizing hormone (LH) and insulin-like growth factor 1 (IGF1) increased (P < 0.05) UHRF1 expression in TC by 2-fold, and forskolin (an adenylate cyclase inducer) alone or combined with IGF1 increased (P < 0.05) UHRF1 expression by 3-fold. An E2F transcription factor inhibitor (E2Fi) decreased (P < 0.05) UHRF1 expression by 44% in TC and by 99% in GC. Estradiol, progesterone, and dibutyryl-cAMP decreased (P < 0.05) UHRF1 mRNA abundance in GC. Treatment of GC with follicle-stimulating hormone (FSH) alone had no effect but when combined with IGF1 enhanced the UHRF1 mRNA abundance by 2.7-fold. Beauvericin (a mycotoxin) completely inhibited the FSH plus IGF1-induced UHRF1 expression in small-follicle GC. Treatments that increased UHRF1 mRNA (i.e., FGF9) in GC tended to decrease (by 63%; P < 0.10) global DNA methylation, and those that decreased UHRF1 mRNA (i.e., E2Fi) in GC tended to increase (by 2.4-fold; P < 0.10) global DNA methylation. Collectively, these results suggest that UHRF1 expression in both GC and TC is developmentally and hormonally regulated, and that UHRF1 may play a role in follicular growth and development as well as be involved in ovarian epigenetic processes.
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Affiliation(s)
| | - Breanne C Morrell
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
| | | | | | - Leon J Spicer
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK
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Scariot R, Brunet L, Olsson B, Palinkas M, Regalo SCH, Rebellato NLB, Brancher JA, Torres CP, Diaz-Serrano KV, Küchler EC, Zielak JC. Single nucleotide polymorphisms in dopamine receptor D2 are associated with bruxism and its circadian phenotypes in children. Cranio 2019; 40:152-159. [PMID: 31868570 DOI: 10.1080/08869634.2019.1705629] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Objective: To evaluate the association of bruxism phenotypes with single nucleotide polymorphisms in FKBP5, DRD2, ANKK1, and COMT.Methods: Clinical oral examination was performed to diagnose bruxism phenotypes in 150 children. DNA was collected from saliva. Logistic univariate regression, Chi-square, and Fisher's exact tests were performed (p < 0.05).Results: Bruxism was associated with DRD2 (p = 0.02). Tooth grinding while awake was associated with ANKK1 (p < 0.001), and tooth grinding while asleep was associated with DRD2 in the additive (p = 0.030) and dominant (p = 0.008) model. Tooth clenching while awake was associated with ANKK1 in the additive (p = 0.005) and dominant (p = 0.008) models, whereas tooth clenching while asleep was associated with ANKK1 (p < 0.001) and with COMT in the additive (p = 0.001) and dominant (p = 0.003) models.Discussion: Polymorphisms in DRD2, ANKK1, and COMT are associated with bruxism phenotypes.
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Affiliation(s)
- Rafaela Scariot
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil.,School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Leonardo Brunet
- School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Bernardo Olsson
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil
| | - Marcelo Palinkas
- Department of Pediatric Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Nelson Luis Barbosa Rebellato
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil
| | - João Armando Brancher
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil.,School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Carolina Paes Torres
- Department of Pediatric Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | | | | | - João Cesar Zielak
- School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
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Zhou L, Tian S, Qin G. RNA methylomes reveal the m 6A-mediated regulation of DNA demethylase gene SlDML2 in tomato fruit ripening. Genome Biol 2019; 20:156. [PMID: 31387610 PMCID: PMC6683476 DOI: 10.1186/s13059-019-1771-7] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 07/22/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Methylation of nucleotides, notably in the forms of 5-methylcytosine (5mC) in DNA and N6-methyladenosine (m6A) in mRNA, carries important information for gene regulation. 5mC has been elucidated to participate in the regulation of fruit ripening, whereas the function of m6A in this process and the interplay between 5mC and m6A remain uncharacterized. RESULTS Here, we show that mRNA m6A methylation exhibits dynamic changes similar to DNA methylation during tomato fruit ripening. RNA methylome analysis reveals that m6A methylation is a prevalent modification in the mRNA of tomato fruit, and the m6A sites are enriched around the stop codons and within the 3' untranslated regions. In the fruit of the ripening-deficient epimutant Colorless non-ripening (Cnr) which harbors DNA hypermethylation, over 1100 transcripts display increased m6A levels, while only 134 transcripts show decreased m6A enrichment, suggesting a global increase in m6A. The m6A deposition is generally negatively correlated with transcript abundance. Further analysis demonstrates that the overall increase in m6A methylation in Cnr mutant fruit is associated with the decreased expression of RNA demethylase gene SlALKBH2, which is regulated by DNA methylation. Interestingly, SlALKBH2 has the ability to bind the transcript of SlDML2, a DNA demethylase gene required for tomato fruit ripening, and modulates its stability via m6A demethylation. Mutation of SlALKBH2 decreases the abundance of SlDML2 mRNA and delays fruit ripening. CONCLUSIONS Our study identifies a novel layer of gene regulation for key ripening genes and establishes an essential molecular link between DNA methylation and mRNA m6A methylation during fruit ripening.
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Affiliation(s)
- Leilei Zhou
- Key Laboratory of Plant Resources, Institute of Botany, Innovation Academy for Seed Design, Chinese Academy of Sciences, No.20 Nanxincun, Xiangshan, Haidian District, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shiping Tian
- Key Laboratory of Plant Resources, Institute of Botany, Innovation Academy for Seed Design, Chinese Academy of Sciences, No.20 Nanxincun, Xiangshan, Haidian District, Beijing, 100093, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Guozheng Qin
- Key Laboratory of Plant Resources, Institute of Botany, Innovation Academy for Seed Design, Chinese Academy of Sciences, No.20 Nanxincun, Xiangshan, Haidian District, Beijing, 100093, China.
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Saczuk K, Lapinska B, Wilmont P, Pawlak L, Lukomska-Szymanska M. The Bruxoff Device as a Screening Method for Sleep Bruxism in Dental Practice. J Clin Med 2019; 8:jcm8070930. [PMID: 31261634 PMCID: PMC6678144 DOI: 10.3390/jcm8070930] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 06/22/2019] [Accepted: 06/26/2019] [Indexed: 12/30/2022] Open
Abstract
Sleep bruxism (SB) is a masticatory muscle activity during sleep and a common phenomenon. Severe SB can have a serious impact on the success of dental treatment. Reliable methods of screening and diagnosing patients with SB are crucial. Therefore, in this study, a Bruxoff device as a potential screening and diagnostic method for sleep bruxism was evaluated. A total of 60 adults participated in this study: 35 patients with symptoms of bruxism (study group) and 25 asymptomatic patients (control group). Data were recorded using Bruxoff. All symptomatic patients participating in the study turned out to be bruxers, while not all asymptomatic patients turned out to be non-bruxers according to the Bruxoff device. Bruxoff is a simple screening device that can be safely used to evaluate masseter muscle activity during sleep. Since the device does not have a built-in microphone and/or video camera and, therefore, cannot record grinding sounds, the objective capabilities of Bruxoff as a single diagnostic device for sleep bruxism are limited.
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Affiliation(s)
- Klara Saczuk
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
| | - Barbara Lapinska
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
| | - Paulina Wilmont
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
| | - Lukasz Pawlak
- Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland
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