PMID- 25218601 OWN - NLM STAT- MEDLINE DCOM- 20150925 LR - 20220408 IS - 1872-6623 (Electronic) IS - 0304-3959 (Print) IS - 0304-3959 (Linking) VI - 155 IP - 11 DP - 2014 Nov TI - Epistasis between polymorphisms in COMT, ESR1, and GCH1 influences COMT enzyme activity and pain. PG - 2390-9 LID - S0304-3959(14)00429-1 [pii] LID - 10.1016/j.pain.2014.09.009 [doi] AB - Abnormalities in the enzymatic activity of catechol-O-methyltransferase (COMT) contribute to chronic pain conditions, such as temporomandibular disorders (TMD). Thus, we sought to determine the effects of polymorphisms in COMT and functionally related pain genes in the COMT pathway (estrogen receptor 1 [ESR1], guanosine-5-triphosphate cyclohydrolase 1 [GCH1], methylenetetrahydrofolate reductase [MTHFR]) on COMT enzymatic activity, musculoskeletal pain, and pain-related intermediate phenotypes among TMD cases and healthy control subjects. Results show that the COMT rs4680 (val(158)met) polymorphism is most strongly associated with outcome measures, such that individuals with the minor A allele (met) exhibit reduced COMT activity, increased TMD risk, and increased musculoskeletal pain. Epistatic interactions were observed between the COMT rs4680 polymorphism and polymorphisms in GCH1 and ESR1. Among individuals with the COMT met allele, those with 2 copies of the GCH1 rs10483639 minor G allele exhibit normalized COMT activity and increased mechanical pain thresholds. Among individuals with the COMT val allele, those with 2 copies of the ESR1 rs3020377 minor A allele exhibit reduced COMT activity, increased bodily pain, and poorer self-reported health. These data reveal that the GCH1 minor G allele confers a protective advantage among met carriers, whereas the ESR1 minor A allele is disadvantageous among val carriers. Furthermore, these data suggest that the ability to predict the downstream effects of genetic variation on COMT activity is critically important to understanding the molecular basis of chronic pain conditions. CI - Copyright (c) 2014 International Association for the Study of Pain. Published by Elsevier B.V. All rights reserved. FAU - Smith, Shad B AU - Smith SB AD - Center for Pain Research and Innovation, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA. FAU - Reenila, Ilkka AU - Reenila I AD - Division of Pharmacology and Toxicology, University of Helsinki, Helsinki, Finland. FAU - Mannisto, Pekka T AU - Mannisto PT AD - Division of Pharmacology and Toxicology, University of Helsinki, Helsinki, Finland. FAU - Slade, Gary D AU - Slade GD AD - Center for Pain Research and Innovation, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA. FAU - Maixner, William AU - Maixner W AD - Center for Pain Research and Innovation, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA. FAU - Diatchenko, Luda AU - Diatchenko L AD - Center for Pain Research and Innovation, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA; Alan Edwards Pain Centre For Research on Pain, McGill University, Montreal, Canada. FAU - Nackley, Andrea G AU - Nackley AG AD - Center for Pain Research and Innovation, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA. Electronic address: andrea_nackley@dentistry.unc.edu. LA - eng GR - K12 HD052191/HD/NICHD NIH HHS/United States GR - L30 NS075905/NS/NINDS NIH HHS/United States GR - P01 NS045685/NS/NINDS NIH HHS/United States GR - R01 NS072205/NS/NINDS NIH HHS/United States GR - L30 DE017059/DE/NIDCR NIH HHS/United States GR - K12 DE022793/DE/NIDCR NIH HHS/United States GR - U01 DE017018/DE/NIDCR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20140916 PL - United States TA - Pain JT - Pain JID - 7508686 RN - 0 (ESR1 protein, human) RN - 0 (Estrogen Receptor alpha) RN - EC 1.5.1.20 (Methylenetetrahydrofolate Reductase (NADPH2)) RN - EC 2.1.1.6 (COMT protein, human) RN - EC 2.1.1.6 (Catechol O-Methyltransferase) RN - EC 3.5.4.16 (GTP Cyclohydrolase) SB - IM MH - Adolescent MH - Adult MH - Case-Control Studies MH - Catechol O-Methyltransferase/*genetics/metabolism MH - Epistasis, Genetic/*genetics MH - Estrogen Receptor alpha/*genetics/metabolism MH - Female MH - GTP Cyclohydrolase/*genetics/metabolism MH - Genotype MH - Humans MH - Methylenetetrahydrofolate Reductase (NADPH2)/genetics MH - Middle Aged MH - Mood Disorders/etiology MH - Pain/*enzymology/*genetics/psychology MH - Pain Perception MH - Polymorphism, Single Nucleotide/*genetics MH - Retrospective Studies MH - Young Adult PMC - PMC4253645 MID - NIHMS635047 OTO - NOTNLM OT - Catecholamines OT - Fibromyalgia OT - Gene expression OT - Gene-gene interaction OT - Temporomandibular disorders EDAT- 2014/09/15 06:00 MHDA- 2015/09/26 06:00 PMCR- 2015/11/01 CRDT- 2014/09/15 06:00 PHST- 2014/03/06 00:00 [received] PHST- 2014/07/29 00:00 [revised] PHST- 2014/09/04 00:00 [accepted] PHST- 2014/09/15 06:00 [entrez] PHST- 2014/09/15 06:00 [pubmed] PHST- 2015/09/26 06:00 [medline] PHST- 2015/11/01 00:00 [pmc-release] AID - S0304-3959(14)00429-1 [pii] AID - 10.1016/j.pain.2014.09.009 [doi] PST - ppublish SO - Pain. 2014 Nov;155(11):2390-9. doi: 10.1016/j.pain.2014.09.009. Epub 2014 Sep 16.