Cited by 81Genetic Associations and EpidemiologyEpigenetics and DNA MethylationTreatment of Major Depression

Genetic and epigenetic factors associated with depression: an updated overview

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Alshaya, Dalal S.·2022·Saudi Journal of Biological Sciences

Abstract

Depression is a complex psychiatric disturbance involving many environmental, genetic, and epigenetic factors. Until now, genetic, and non-genetic studies are still on the way to understanding the complex mechanism of this disease, and there are still many questions that have not yet been answered. Depression includes a large spectrum of heterogeneous symptoms correlated to the deficit of a range of psychological, cognitive, and emotional processes, and it affects various age groups. It is classified into several types according to the severity of symptoms, time of occurrence, and time. Following the World Health Organization (WHO), depression attacks near 350 million persons globally. Several factors overlap in causing depression, including genetic and epigenetic factors, environmental conditions, various stresses, lack of some nutrients to which people are exposed, and excessive stress and abuse in childhood. This study included conducting surveys on depression and new treatment trends based on epigenetic factors associated with the occurrence of the disease. Epigenetic factors provide a completely novel dimension to therapeutic approaches as most diseases are not monogenic, and it is likely that the environment has a significant contribution. Epigenetic inheritance is included in many mental and psychiatric disorders such as depression. In general, epigenetic modifications could be summarized in 3 major points: DNA methylation, histone modification, and non-mediated regulation of RNA (ncRNA). This study also describes some genes associated with one of the depressive disorders using bioinformatics tools and gene bank and had the genes: SLC6A4, COMT, TPH2, FKBP5, MDD1, HTR2A, and MDD2. As in this study, the awareness of Saudi society about depression and its genetic and non-genetic causes was estimated. The results showed that an encouraging percentage of more than half of the research sample possessed correct information about this disorder.

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  1. National Collaborating Centre for Mental Health (UK), 2010. The management of subthreshold depressive symptoms. In Depression: The Treatment and Management of Depression in Adults (Updated Edition). British Psychological Society. 22132433
  2. Shadrina, M. Bondarenko E.A. Slominsky P.A. Genetics factors in major depression disease‏ Frontiers in psychiatry 9 2018 334 30083112 PMC6065213

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Authors
Alshaya, D. S.
Affiliations
Princess Nourah bint Abdulrahman University (SA)
Corresponding author
Alshaya, Dalal S.
Venue
Saudi Journal of Biological Sciences
Publisher
Elsevier BV
Published
2022-08
Volume
29
Issue
8
Pages
103311
ISSN
1319-562X (ISSN-L)
OpenAlex
W4280530400
Cited by
81
References
60
Citations by year
2026: 18 · 2025: 28 · 2024: 27 · 2023: 6 · 2022: 2
FWCI
2.43
Type
journal article
Language
en
Open access
Locations
  • Saudi Journal of Biological Sciences (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Princess Nourah Bint Abdulrahman University
  • Deanship of Scientific Research, Princess Nourah Bint Abdulrahman University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
depression, genetic factors, epigenetic factors, DNA methylation, histone modifications, non-coding RNA, serotonin transporter, catechol-O-methyltransferase, tryptophan hydroxylase 2, FKBP5, HTR2A, childhood abuse, environmental stress, depression awareness, Saudi society

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