Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort

Introduction: Despite the prevalence of depression and anxiety worldwide, their aetiologies remain unclear, and they can be difficult to diagnose and treat. Changes in salt-taste perception have been found in both conditions. Single-nucleotide polymorphisms (SNPs) in the salt-taste-related gene, TRP...

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Main Authors: Celeste Ferraris, Christopher J. Scarlett, Martin Veysey, Mark Lucock, Tamara Bucher, Emma L. Beckett
Format: Article
Language:English
Published: Karger Publishers 2023-10-01
Series:Lifestyle Genomics
Subjects:
Online Access:https://beta.karger.com/Article/FullText/534521
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author Celeste Ferraris
Christopher J. Scarlett
Martin Veysey
Mark Lucock
Tamara Bucher
Emma L. Beckett
author_facet Celeste Ferraris
Christopher J. Scarlett
Martin Veysey
Mark Lucock
Tamara Bucher
Emma L. Beckett
author_sort Celeste Ferraris
collection DOAJ
description Introduction: Despite the prevalence of depression and anxiety worldwide, their aetiologies remain unclear, and they can be difficult to diagnose and treat. Changes in salt-taste perception have been found in both conditions. Single-nucleotide polymorphisms (SNPs) in the salt-taste-related gene, TRPV1, have been associated with alterations to salt-taste perception, preference, and sodium consumption. Diet quality is a known modifier of depression and anxiety and recently, sodium intake has been studied in mental health. However, the relationships between salt-taste genetics, depression, anxiety, and these dietary factors are yet to be elucidated. Methods: Data from the well-characterized cross-sectional Retirement Health and Lifestyle Study (n = 536, ≥65 y) were used to explore the relationships between the salt-taste SNP TRPV1-rs8065080, levels of depression and anxiety (Hospital Anxiety and Depression Scale, HADS), estimated sodium intake, and diet quality in this secondary analysis. Standard least-squares regression and nominal logistic regression modelling were used to compare continuous and categorical variables, respectively, with analyses stratified by sex. Results: Presence of the TRPV1-rs8065080 variant allele (C) was found to increase the likelihood of having depression (HADS) in the total population and in males. The associations remained significant after adjusting for sodium intake, three diet quality indices, and demographic variables, suggesting that TRPV1-rs8065080 genotype is driving the association with depression. Discussion/Conclusion: Future studies should explore extra-oral functions of the SNP and salt-taste receptors in the brain and the roles of neurotransmitters common to both depression and salt taste to improve the management of this increasingly prevalent and difficult-to-treat condition.
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spelling doaj.art-a095a22bb75341189d7b5f530849feca2023-11-23T07:16:28ZengKarger PublishersLifestyle Genomics2504-31882023-10-0116122423610.1159/000534521534521Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly CohortCeleste Ferraris0Christopher J. Scarlett1Martin Veysey2Mark Lucock3Tamara Bucher4Emma L. Beckett5School of Environmental and Life Sciences, College of Engineering, Science and Environment, the University of Newcastle, Ourimbah, NSW, AustraliaSchool of Environmental and Life Sciences, College of Engineering, Science and Environment, the University of Newcastle, Ourimbah, NSW, AustraliaSchool of Medicine and Public Health, College of Health, Medicine and Wellbeing, the University of Newcastle, Callaghan, NSW, AustraliaSchool of Environmental and Life Sciences, College of Engineering, Science and Environment, the University of Newcastle, Ourimbah, NSW, AustraliaSchool of Environmental and Life Sciences, College of Engineering, Science and Environment, the University of Newcastle, Ourimbah, NSW, AustraliaSchool of Environmental and Life Sciences, College of Engineering, Science and Environment, the University of Newcastle, Ourimbah, NSW, AustraliaIntroduction: Despite the prevalence of depression and anxiety worldwide, their aetiologies remain unclear, and they can be difficult to diagnose and treat. Changes in salt-taste perception have been found in both conditions. Single-nucleotide polymorphisms (SNPs) in the salt-taste-related gene, TRPV1, have been associated with alterations to salt-taste perception, preference, and sodium consumption. Diet quality is a known modifier of depression and anxiety and recently, sodium intake has been studied in mental health. However, the relationships between salt-taste genetics, depression, anxiety, and these dietary factors are yet to be elucidated. Methods: Data from the well-characterized cross-sectional Retirement Health and Lifestyle Study (n = 536, ≥65 y) were used to explore the relationships between the salt-taste SNP TRPV1-rs8065080, levels of depression and anxiety (Hospital Anxiety and Depression Scale, HADS), estimated sodium intake, and diet quality in this secondary analysis. Standard least-squares regression and nominal logistic regression modelling were used to compare continuous and categorical variables, respectively, with analyses stratified by sex. Results: Presence of the TRPV1-rs8065080 variant allele (C) was found to increase the likelihood of having depression (HADS) in the total population and in males. The associations remained significant after adjusting for sodium intake, three diet quality indices, and demographic variables, suggesting that TRPV1-rs8065080 genotype is driving the association with depression. Discussion/Conclusion: Future studies should explore extra-oral functions of the SNP and salt-taste receptors in the brain and the roles of neurotransmitters common to both depression and salt taste to improve the management of this increasingly prevalent and difficult-to-treat condition.https://beta.karger.com/Article/FullText/534521saltdepressionanxietytastegeneticsdiet
spellingShingle Celeste Ferraris
Christopher J. Scarlett
Martin Veysey
Mark Lucock
Tamara Bucher
Emma L. Beckett
Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
Lifestyle Genomics
salt
depression
anxiety
taste
genetics
diet
title Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
title_full Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
title_fullStr Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
title_full_unstemmed Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
title_short Salt-Taste Polymorphism TRPV1-rs8065080 Is Associated with Increased Likelihood of Depression in an Elderly Cohort
title_sort salt taste polymorphism trpv1 rs8065080 is associated with increased likelihood of depression in an elderly cohort
topic salt
depression
anxiety
taste
genetics
diet
url https://beta.karger.com/Article/FullText/534521
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