Association of COMT and MAO-B gene polymorphic variants with sensitivity to dopaminergic therapy in patients with Parkinson’s disease
- Authors: Khabarova Y.I.1, Tappakhov A.A.1,2, Popova T.E.3, Maksimova N.E.4, Asekritova A.S.2,4, Tatarinova O.V.1,4
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Affiliations:
- Yakut Scientific Center for Complex Medical Problems
- M.K. Ammosov North-Eastern Federal University
- Lotus Medical Clinic
- Republican Clinical Hospital No. 3
- Issue: Vol 19, No 3 (2025)
- Pages: 55-62
- Section: Original articles
- URL: https://ogarev-online.ru/2075-5473/article/view/352492
- DOI: https://doi.org/10.17816/ACEN.1248
- EDN: https://elibrary.ru/PBNTQH
- ID: 352492
Cite item
Abstract
Introduction. Levodopa and other dopaminergic agents remain the cornerstone of pharmacotherapy for Parkinson’s disease (PD). Two enzymes play key roles in dopamine metabolism: catechol-O-methyltransferase and monoamine oxidase type B, encoded by the COMT and MAO-B genes respectively.
This study aimed at analyzing potential association between dopaminergic therapy response and carrier status of COMT (rs4680) and MAO-B (rs1799836) polymorphisms in patients with PD.
Materials and methods. The study included 96 PD patients at stages 2–3 on the modified Hoehn and Yahr scale. Most patients (n=64; 66.7%) received levodopa/carbidopa, with 40.6% on combined dopaminergic therapy. All patients underwent assessment of dopaminergic therapy effictiveness using the difference in motor deficit (calculated from part III of the Unified Parkinson’s Disease Rating Scale) between the worst and best states (%). COMT and MAO-B polymorhisms were detected by real-time polymerase chain reaction.
Results. Allelic analysis demonstrated that carriers of the COMT gene rs4680 G allele responded better to dopaminergic therapy than A allele carriers (p = 0.038) (43.78 ± 18.15% vs 38.53 ± 16.58%; p = 0.038). Among men, we found no significant differences in therapy sensitivity related to MAO-B (rs1799836) variants, while female CC genotype carriers demonstrated better treatment response than TC heterozygotes (35.45 ± 17.78% vs 55.16 ± 11.22%; p=0.019).
Conclusion. Our data suggest that in patients with PD, not only drug-induced dyskinesias and motor fluctuations, but also overall sensitivity to dopaminergic therapy may be associated with specific COMT and MAO-B polymorphisms.
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##article.viewOnOriginalSite##About the authors
Yuliya I. Khabarova
Yakut Scientific Center for Complex Medical Problems
Author for correspondence.
Email: september062007@mail.ru
ORCID iD: 0000-0002-5674-4426
junior researcher, neurologist, Head, Neurological department, Center for neurodegenerative diseases, Clinic
Russian Federation, YakutskAlexey A. Tappakhov
Yakut Scientific Center for Complex Medical Problems; M.K. Ammosov North-Eastern Federal University
Email: september062007@mail.ru
ORCID iD: 0000-0002-4159-500X
Cand. Sci. (Med.), Assoc. Prof., Department of neurology and psychiatry, senior researcher, Neurodegenerative disorders center
Russian Federation, Yakutsk; YakutskTatiana E. Popova
Lotus Medical Clinic
Email: september062007@mail.ru
ORCID iD: 0000-0003-1062-1540
Dr. Sci. (Med.), neurologist
Russian Federation, YakutskNadezhda E. Maksimova
Republican Clinical Hospital No. 3
Email: september062007@mail.ru
ORCID iD: 0009-0003-9677-7526
biologist, Center for predictive medicine and bioinformatics
Russian Federation, YakutskAleksandra S. Asekritova
M.K. Ammosov North-Eastern Federal University; Republican Clinical Hospital No. 3
Email: september062007@mail.ru
ORCID iD: 0000-0002-5378-2128
Cand. Sci. (Med.), Assoc. Prof., Department of internal medicine and general practice (family medicine), Head, Center for predictive medicine and bioinformatics
Russian Federation, Yakutsk; YakutskOlga V. Tatarinova
Yakut Scientific Center for Complex Medical Problems; Republican Clinical Hospital No. 3
Email: september062007@mail.ru
ORCID iD: 0000-0001-5499-9524
Dr. Sci. (Med.), Chief doctor, senior researcher
Russian Federation, Yakutsk; YakutskReferences
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