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Cai JJ, Zheng P, Su M, Shen YL, Li XC, Guo QW, Chen X, Su GM, Lin J, Gong RR, Fang DZ. Suicidal ideation in adolescents with adiponectin receptor 2 rs12342 polymorphism affected by Wenchuan earthquake. Early Interv Psychiatry 2024. [PMID: 38837550 DOI: 10.1111/eip.13585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 05/17/2024] [Accepted: 05/30/2024] [Indexed: 06/07/2024]
Abstract
PURPOSE The present study was to investigate prevalence of suicidal ideation and its associations with biological and environmental factors in adolescents with different genotypes of rs12342 at adiponectin receptor 2 gene (ADIPOR2). METHODS Suicidal ideation, biological and environmental factors were evaluated by questionnaires in 669 high school students after Wenchuan earthquake in China. ADIPOR2 rs12342 was genotyped by polymerase chain reaction-restriction fragment length polymorphism and verified by DNA sequencing. RESULTS Female adolescents had higher prevalence of suicidal ideation than male students in AG heterozygote and GG homozygote, but not AA homozygote. Prevalence of suicidal ideation was different in male, but not female, subjects with different genotypes. Genotype and allele frequencies were significantly different between male students with and without suicidal ideation, but not the female counterparts. Family history of mental disorders, extent of damage to property, carbohydrate intake and protein intake were associated with suicidal ideation in female subjects, while ADIPOR2 rs12342, father's educational level and previous trauma experience were associated with suicidal ideation in male subjects. CONCLUSION ADIPOR2 rs12342 is associated with and has potential to interact with environmental factors on suicidal ideation in a gender-dependent manner in youth. These findings pave a novel way and perspective for precision inferences of suicidal ideation in subjects with different genetic backgrounds. ADIPOR2 rs12342 needs to be considered when intervening suicidal ideation, especially in adolescents.
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Affiliation(s)
- Jia Jing Cai
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Ping Zheng
- West China School of Nursing, Sichuan University, Chengdu, People's Republic of China
- Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, People's Republic of China
| | - Mi Su
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Yi Lin Shen
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Xue Cheng Li
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Qi Wei Guo
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Xu Chen
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Guo Ming Su
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Jia Lin
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
| | - Ren Rong Gong
- West China School of Nursing, Sichuan University, Chengdu, People's Republic of China
- Department of Surgery, West China Hospital of Sichuan University, Chengdu, People's Republic of China
| | - Ding Zhi Fang
- Department of Biochemistry and Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, People's Republic of China
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Nobile B, Gourguechon-Buot E, Gorwood P, Olié E, Courtet P. Association of clinical characteristics, depression remission and suicide risk with discrepancies between self- and clinician-rated suicidal ideation: Two large naturalistic cohorts of outpatients with depression. Psychiatry Res 2024; 335:115833. [PMID: 38471242 DOI: 10.1016/j.psychres.2024.115833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024]
Abstract
Clinician- and self-rating of suicidal ideation (SI) are often discrepant. The aim of this study was to determine: 1) Association between discrepant self- and clinician-rated SI with clinical characteristics, depression remission and SA (SA) risk; 2) which SI assessment (self or clinician) predicted depression remission and risk of SA. LUEUR and GENESE are two large, prospective, naturalistic cohorts of French adult outpatients with unipolar depression treated and followed for 6 weeks. SI presence was assessed and defined with a score to the suicidal item of the Montgomery-Åsberg Depression Rating Scale ≥3. Discordant SI was defined as SI detection by only one of the two evaluators (patient or clinician). In both cohorts, 49.3 % (GENESE) and 34 % (LUEUR) patients had discordant SI. Clinical characteristics were more severe, and risk of SA was higher in patients with current SI (concordant and discordant) than in patients without SI and in the concordant than in the discordant group. Prediction of the risk of SA and of depression non-remission was comparable by the two ratings. Patients with SI (concordant and discordant) have more severe clinical characteristics and patients with concordant SI are the most at risk of SA during the follow-up. It is crucial to assess SI and to improve how it is evaluated.
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Affiliation(s)
- Bénédicte Nobile
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Hôpital La Colombière, University of Montpellier, CNRS, INSERM, 39, Avenue Charles Flahault, BP 34493, Montpellier 34093 CEDEX 5, France.
| | - Elia Gourguechon-Buot
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Hôpital La Colombière, University of Montpellier, CNRS, INSERM, 39, Avenue Charles Flahault, BP 34493, Montpellier 34093 CEDEX 5, France
| | - Philip Gorwood
- Inserm UMRS1266, Institute of Psychiatry and Neuroscience of Paris, Paris, France
| | - Emilie Olié
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Hôpital La Colombière, University of Montpellier, CNRS, INSERM, 39, Avenue Charles Flahault, BP 34493, Montpellier 34093 CEDEX 5, France
| | - Philippe Courtet
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, France; IGF, Hôpital La Colombière, University of Montpellier, CNRS, INSERM, 39, Avenue Charles Flahault, BP 34493, Montpellier 34093 CEDEX 5, France
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Syed O, Jancic P, Fink AB, Knezevic NN. Drug Safety and Suicidality Risk of Chronic Pain Medications. Pharmaceuticals (Basel) 2023; 16:1497. [PMID: 37895968 PMCID: PMC10609967 DOI: 10.3390/ph16101497] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/13/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
Chronic pain is one of the main leading causes of disability in the world at present. A variety in the symptomatology, intensity and duration of this phenomenon has led to an ever-increasing demand of pharmacological treatment and relief. This demand for medication, ranging from well-known groups, such as antidepressants and benzodiazepines, to more novel drugs, was followed by a rise in safety concerns of such treatment options. The validity, frequency, and diversity of such concerns are discussed in this paper, as well as their possible effect on future prescription practices. A specific caution is provided towards the psychological safety and toll of these medications, regarding suicidality and suicidal ideation. Most significantly, this paper highlights the importance of pharmacovigilance and underscores the necessity of surveillance programs when considering chronic pain medication.
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Affiliation(s)
- Osman Syed
- Advocate Illinois Masonic Medical Center, Department of Anesthesiology, Chicago, IL 60657, USA; (O.S.); (P.J.); (A.B.F.)
- Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL 60515, USA
| | - Predrag Jancic
- Advocate Illinois Masonic Medical Center, Department of Anesthesiology, Chicago, IL 60657, USA; (O.S.); (P.J.); (A.B.F.)
| | - Adam B. Fink
- Advocate Illinois Masonic Medical Center, Department of Anesthesiology, Chicago, IL 60657, USA; (O.S.); (P.J.); (A.B.F.)
- Harborview Medical Center, Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98104, USA
| | - Nebojsa Nick Knezevic
- Advocate Illinois Masonic Medical Center, Department of Anesthesiology, Chicago, IL 60657, USA; (O.S.); (P.J.); (A.B.F.)
- Department of Anesthesiology, University of Illinois, Chicago, IL 60612, USA
- Department of Surgery, University of Illinois, Chicago, IL 60612, USA
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Porras-Segovia A, Nobile B, Olié E, Gourguechon-Buot E, Garcia EB, Gorwood P, Abascal-Peiró S, Courtet P. Factors associated with transitioning from suicidal ideation to suicide attempt in the short-term: Two large cohorts of depressed outpatients. J Affect Disord 2023; 335:155-165. [PMID: 37182605 DOI: 10.1016/j.jad.2023.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 04/18/2023] [Accepted: 05/06/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND This study explores factors associated with transitioning from recent suicidal ideation (SI) to suicide attempt (SA) in depressed outpatients. METHODS This is a case-control study nested in two cohorts (LUEUR and GENESE) of depressed adult outpatients recruited in France and followed up for six weeks. SI, depression, anxiety, insomnia, impulsivity, and hopelessness were assessed with validated scales. Differences between patients with SI who attempted suicide during follow up and those who did not were explored using logistic regressions. RESULTS There was a slight majority of females in both cohorts. Mean age was 47.2 years in LUEUR and 49.4 years in GENESE. Of the 3785 participants in the LUEUR cohort, 72 (2.1 %) attempted suicide within the 6-week period vs. 19 of the 2698 participants (0.7 %) in the GENESE cohort. In LUEUR, factors associated with SA within the 6-week period were lifetime history of SA (OR = 5.35, 95 % CI = 3.30-8.66), high SI at baseline (OR = 3.87, 95 % CI = 2.4-6.24), associated treatments (OR = 3.28, 95 % CI = 2.00-5.38), and less improvement over follow-up in the following symptoms: SI (OR = 3.64, 95 % CI = 1.89-7.02), depression (OR = 3.66, 95 % CI = 1.76-7.62), and anxiety (OR = 3.26, 95 % CI = 1.46-7.27). In GENESE, associated factors were lifetime history of SAs (OR = 9.93, 95 % CI = 3.83-25.80), and less improvement in SI (OR = 9.20, 95 % CI = 3.61-23.44). LIMITATIONS Heterogeneity of cohorts prevented from performing a pooled analysis with a greater sample size. CONCLUSIONS In depressed outpatients, lack of improvement was strongly associated with a short-term SA, particularly in patients with a history of previous SAs. Fast acting treatment on SI and depression may help prevent SAs.
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Affiliation(s)
- Alejandro Porras-Segovia
- Instituto de Investigación Fundación Jiménez Díaz, Madrid, Spain; Division of Psychiatry, Imperial College London, London, UK.
| | - Bénédicte Nobile
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France; FondaMental Foundation, France
| | - Emilie Olié
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France; FondaMental Foundation, France
| | - Elia Gourguechon-Buot
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Enrique Baca Garcia
- Instituto de Investigación Fundación Jiménez Díaz, Madrid, Spain; University Hospital Fundación Jiménez Díaz, Madrid, Spain; Departamento de Psiquiatría, Hospital Rey Juan Carlos de Móstoles, Móstoles, Spain; Universidad Católica del Maule (Talca), Chile; Departamento de Psiquiatría, Hospital Central de Villalba, Madrid, Spain; Departamento de Psiquiatría, Hospital Universitario Infanta Elena, Madrid, Spain; Nimes University Hospital, Nimes, France; CIBERSAM, Spain; Departamento de Psiquiatría, Universidad Autónoma de Madrid, Spain
| | - Philip Gorwood
- Instituto de Investigación Fundación Jiménez Díaz, Madrid, Spain
| | - Sofía Abascal-Peiró
- University Hospital Fundación Jiménez Díaz, Madrid, Spain; Departamento de Psiquiatría, Hospital Rey Juan Carlos de Móstoles, Móstoles, Spain
| | - Philippe Courtet
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, France; IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France; FondaMental Foundation, France
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Abstract
OBJECTIVE A better understanding of the genetic, molecular and cellular mechanisms of brain-derived neurotrophic factor (BDNF) and its association with neuroplasticity could play a pivotal role in finding future therapeutic targets for novel drugs in major depressive disorder (MDD). Because there are conflicting results regarding the exact role of BDNF polymorphisms in MDD still, we set out to systematically review the current evidence regarding BDNF-related mutations in MDD. METHODS We conducted a keyword-guided search of the PubMed and Embase databases, using 'BDNF' or 'brain-derived neurotrophic factor' and 'major depressive disorder' and 'single-nucleotide polymorphism'. We included all publications in line with our exclusion and inclusion criteria that focused on BDNF-related mutations in the context of MDD. RESULTS Our search yielded 427 records in total. After screening and application of our eligibility criteria, 71 studies were included in final analysis. According to present overall scientific data, there is a possibly major pathophysiological role for BDNF neurotrophic systems to play in MDD. However, on the one hand, the synthesis of evidence makes clear that likely no overall association of BDNF-related mutations with MDD exists. On the other hand, it can be appreciated that solidifying evidence emerged on specific significant sub-conditions and stratifications based on various demographic, clinico-phenotypical and neuromorphological variables. CONCLUSIONS Further research should elucidate specific BDNF-MDD associations based on demographic, clinico-phenotypical and neuromorphological variables. Furthermore, biomarker approaches, specifically combinatory ones, involving BDNF should be further investigated.
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Nobile B, Olié E, Dubois J, Guillaume S, Gorwood P, Courtet P. Characteristics and treatment outcome of suicidal depression: Two large naturalistic cohorts of depressed outpatients. Aust N Z J Psychiatry 2022; 56:347-364. [PMID: 34281409 DOI: 10.1177/00048674211025697] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The emergence of new drugs for managing suicidal ideation (e.g. ketamine) raises the question of whether suicidal depression (i.e. moderate to severe depression with concomitant suicidal ideation) is a specific depression phenotype. Therefore, this study characterized patients with suicidal depression (baseline clinical characteristics, suicidal ideation and depression evolutions, suicide risk) in two large cohorts of outpatients with depression. METHODS LUEUR and GENESE are two large, prospective, naturalistic cohorts of French adult outpatients with depression (Diagnostic and Statistical Manual of Mental Disorders, fourth edition, criteria), treated and followed up for 6 weeks. Depression severity was assessed with the Hospital Anxiety and Depression Scale, and suicidal ideation with the suicidal item of the Montgomery-Åsberg Depression Rating Scale. Patients with moderate or severe depression (Hospital Anxiety and Depression Scale-Depression subscale score >11) were selected and classified as without suicidal ideation (suicidal item of the Montgomery-Åsberg Depression Rating Scale <2), with moderate suicidal ideation (suicidal item of the Montgomery-Åsberg Depression Rating Scale [2; 3]) and with severe suicidal ideation (suicidal item of the Montgomery-Åsberg Depression Rating Scale ⩾4). RESULTS Baseline clinical features were more severe (e.g. higher anxiety and depression scores) in depressed patients with moderate/severe suicidal ideation. Depression remission after treatment was less frequent among patients with severe suicidal ideation. The risk of suicide attempt during the follow-up was threefold higher in patients with suicidal ideation among those 10% had persistent suicidal ideation. CONCLUSION Suicidal depression could be a specific depression phenotype with more severe clinical characteristics, less frequent depression remission, suicidal ideation persistence and higher suicide attempt risk, despite antidepressant treatment. It seems that novel therapeutic strategies could be needed.
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Affiliation(s)
- Bénédicte Nobile
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, Montpellier, France.,IGF, Hôpital La Colombière, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Emilie Olié
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, Montpellier, France.,IGF, Hôpital La Colombière, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,FondaMental Foundation, Créteil, France
| | - Jonathan Dubois
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, Montpellier, France.,IGF, Hôpital La Colombière, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Sebastien Guillaume
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, Montpellier, France.,IGF, Hôpital La Colombière, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,FondaMental Foundation, Créteil, France
| | - Philip Gorwood
- Inserm UMRS1266, Institute of Psychiatry and Neuroscience of Paris, Paris, France
| | - Philippe Courtet
- Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital CHU Montpellier, Montpellier, France.,IGF, Hôpital La Colombière, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,FondaMental Foundation, Créteil, France
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Li K, Zhou G, Xiao Y, Gu J, Chen Q, Xie S, Wu J. Risk of Suicidal Behaviors and Antidepressant Exposure Among Children and Adolescents: A Meta-Analysis of Observational Studies. Front Psychiatry 2022; 13:880496. [PMID: 35693956 PMCID: PMC9178080 DOI: 10.3389/fpsyt.2022.880496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Although several studies have reviewed the suicidal risk of antidepressants, the conclusions remain inconsistent. We, therefore, performed a meta-analysis of observational studies to address the association between exposure to antidepressants, especially selective serotonin reuptake inhibitors (SSRIs) and the risk of suicide and suicide attempt in children and adolescents. METHODS MEDLINE and Embase were searched from January 1990 to April 2021. Seventeen cohort and case-control studies were identified that reported suicide or suicide attempt in children and young adults (aged 5-25 years) who were exposed to any antidepressants. We extracted the estimates and corresponding 95% confidence intervals (CIs) from each publication. RESULTS The results showed that antidepressant exposure significantly increased the risk of suicide and suicide attempt when compared with no antidepressant usage among children and adolescents. The pooled relative risk (RR) was 1.38 (95% CI: 1.16-1.64; I 2 = 83.1%). Among the antidepressants, SSRI use was associated with an increased risk of suicide and suicide attempt, and the pooled RR was 1.28 (95% CI: 1.09-1.51; I 2 = 68.8%). In subgroup analysis, the attempted suicidal risk of antidepressant and SSRI was significantly increased (RR = 1.35, 95% CI: 1.13-1.61; I 2 = 86.2% for all antidepressants; and RR = 1.26, 95% CI: 1.06-1.48; I 2 = 73.8% for SSRIs), while the completed suicidal risk of antidepressant and SSRI was not statistically significant (RR = 2.32, 95% CI: 0.82-6.53; I 2 = 6.28% for all antidepressants; and RR = 1.88, 95% CI: 0.74-4.79; I 2 = 52.0% for SSRIs). In addition, the risk of suicide and suicide attempt between SSRIs and other antidepressants was similar (RR 1.13, 95% CI: 0.87-1.46, I 2 = 32.4%). CONCLUSION The main findings of this meta-analysis provide some evidence that antidepressant exposure seems to have an increased suicidal risk among children and young adults. Since untreated depression remains one of the largest risk factors for suicide and the efficacy of antidepressants is proven, clinicians should evaluate carefully their patients and be cautious with patients at risk to have treatment emergence or worsening of suicidal ideation (TESI/TWOSI) when prescribing antidepressants to children and young patients.
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Affiliation(s)
- Kuan Li
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China.,Shenzhen Key Laboratory of Prevention and Treatment of Severe Infections, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Guibao Zhou
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Yan Xiao
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Jiayu Gu
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Qiuling Chen
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Shouxia Xie
- Department of Pharmacy, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Junyan Wu
- Department of Pharmacy, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Sreter KB, Popovic-Grle S, Lampalo M, Konjevod M, Tudor L, Nikolac Perkovic M, Jukic I, Bingulac-Popovic J, Safic Stanic H, Markeljevic J, Pivac N, Svob Strac D. Plasma Brain-Derived Neurotrophic Factor (BDNF) Concentration and BDNF/ TrkB Gene Polymorphisms in Croatian Adults with Asthma. J Pers Med 2020; 10:E189. [PMID: 33114368 PMCID: PMC7712770 DOI: 10.3390/jpm10040189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/18/2020] [Accepted: 10/22/2020] [Indexed: 12/14/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) and its tropomyosin-related kinase B (TrkB) receptor might contribute to normal lung functioning and immune responses; however, their role in asthma remains unclear. Plasma BDNF concentrations, as well as BDNF and NTRK2 (TrkB gene) polymorphisms, were investigated in 120 asthma patients and 120 healthy individuals using enzyme-linked immunosorbent assay and polymerase chain reaction, respectively. The genotype and allele frequencies of BDNF Val66Met (rs6265) and NTRK2 rs1439050 polymorphisms did not differ between healthy individuals and asthma patients, nor between patients grouped according to severity or different asthma phenotypes. Although plasma BDNF concentrations were higher among healthy subjects carrying the BDNF Val66Met GG genotype compared to the A allele carriers, such differences were not detected in asthma patients, suggesting the influences of other factors. Plasma BDNF concentration was not affected by NTRK2 rs1439050 polymorphism. Asthma patients had higher plasma BDNF concentrations than control subjects; however, no differences were found between patients subdivided according to asthma severity, or Type-2, allergic, and eosinophilic asthma. Higher plasma BDNF levels were observed in asthma patients with aspirin sensitivity and aspirin-exacerbated respiratory disease. These results suggest that plasma BDNF may serve as a potential peripheral biomarker for asthma, particularly asthma with aspirin sensitivity.
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Affiliation(s)
- Katherina B. Sreter
- Department of Clinical Immunology, Pulmonology and Rheumatology, University Hospital Centre “Sestre Milosrdnice”, 10000 Zagreb, Croatia; (K.B.S.); (J.M.)
| | - Sanja Popovic-Grle
- Clinic for Lung Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (S.P.-G.); (M.L.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Marina Lampalo
- Clinic for Lung Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (S.P.-G.); (M.L.)
| | - Marcela Konjevod
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Lucija Tudor
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Matea Nikolac Perkovic
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Irena Jukic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Jasna Bingulac-Popovic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
| | - Hana Safic Stanic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
| | - Jasenka Markeljevic
- Department of Clinical Immunology, Pulmonology and Rheumatology, University Hospital Centre “Sestre Milosrdnice”, 10000 Zagreb, Croatia; (K.B.S.); (J.M.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Nela Pivac
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Dubravka Svob Strac
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
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9
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Polymorphisms of stress pathway genes and emergence of suicidal ideation at antidepressant treatment onset. Transl Psychiatry 2020; 10:320. [PMID: 32952155 PMCID: PMC7502493 DOI: 10.1038/s41398-020-01003-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 09/03/2020] [Accepted: 09/07/2020] [Indexed: 01/17/2023] Open
Abstract
The prescription of antidepressant drugs is one of the most frequently used strategies to prevent suicide and suicidal behavior. However, some patients develop suicidal ideation at antidepressant treatment onset, a phenomenon known as treatment-emergent suicidal ideation (TESI). Few studies have explored TESI pharmacogenomics. As the Hypothalamic-Pituitary-Adrenal (HPA) axis might be implicated in suicidal behavior, we assessed the relationship between TESI and single nucleotide polymorphisms (SNPs) in the HPA axis-implicated NR3C1 (n = 7 SNPs), FKBP5 (n = 5 SNPs), AVPR1B (n = 1 SNPs), CRHR1 (n = 1 SNPs), and SKA2 (n = 1 SNPs) genes, in a sample of 3566 adult outpatients with depression for whom an antidepressant treatment was introduced. General practitioners and psychiatrists throughout France followed participants for 6 weeks after the initial prescription of tianeptine, an antidepressant molecule showing mu agonism. Suicidal ideation was assessed with item 10 of the Montgomery-Åsberg Depression Rating Scale (item dedicated to suicidal ideation) at baseline, and at week 2, 4, and 6 of treatment. Within the informative sample, 112 patients reported TESI and 384 did not. TESI was significantly associated with the TT genotype of the SNP rs6902321 in FKBP5 (OR = 1.76, 95% CI = [1.07; 2.90]; p-value = 0.03) and the GG/AG genotype of the SNP rs7208505 in SKA2 (OR = 1.85, 95% CI = [1.03;3.33]; p-value = 0.04). These associations were not significant after multiple test correction. Nevertheless, our results suggest a possible involvement of HPA axis elements in treatment-emergent suicidal ideation (TESI).
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An Analysis of Five TrkB Gene Polymorphisms in Schizophrenia and the Interaction of Its Haplotype with rs6265 BDNF Gene Polymorphism. DISEASE MARKERS 2020; 2020:4789806. [PMID: 32351633 PMCID: PMC7174942 DOI: 10.1155/2020/4789806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 03/06/2020] [Indexed: 11/17/2022]
Abstract
Aim The BDNF dysfunction in the schizophrenia has been soundly documented. The TrkB gene is a high-affinity receptor of the BDNF that is changed in schizophrenia and mood disorders. The study had two aims: first, to identify whether the five nucleotide polymorphisms (SNPs) in TrkB gene are associated with a diagnosis of schizophrenia; and the latter, if any association exists between the TrkB SNPs and psychopathology, suicide attempts, and family history of schizophrenia in a Caucasian population. Methods Case-control study (401 patients and 657 healthy controls) was used to examine a predisposition for schizophrenia. The tests for psychopathology, suicide attempts, and family history of schizophrenia were conducted only in patient group. The severity of the schizophrenia was measured using the five-factor model of the PANSS. In addition, the haplotype analysis for both the separate for SNPs of TrkB gene and in combination with the rs6265 SNP BDNF gene was conducted. Results Our case-control study revealed that the genetic variants of rs10868235 (T/T polymorphic genotype) and rs1387923 (G/G polymorphic genotype) of the TrkB gene were associated with a higher risk of developing schizophrenia in men. However, the A/A wild genotype of rs1387923 was connected with a lower risk for both the development of and the family manifestation of schizophrenia in men. The G polymorphic allele of rs1565445 was associated with an increased risk of suicide in schizophrenia. The tested SNPs of the TrkB gene did not modulate the psychopathology of schizophrenia. The haplotype that was built with five SNPs in the TrkB gene was protective for men, but after joining the rs6265 SNP of the BDNF gene, a haplotype that was protective for women was created.
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Cheung S, Woo J, Maes MS, Zai CC. Suicide epigenetics, a review of recent progress. J Affect Disord 2020; 265:423-438. [PMID: 32090769 DOI: 10.1016/j.jad.2020.01.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 11/17/2019] [Accepted: 01/11/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Suicide results in over 800,000 deaths every year, making it a major public health concern worldwide. It is highly complex, with genetic and environmental influences. Epigenetic mechanisms, including DNA methylation, miRNA, and histone modifications, could explain the complex interplay of environmental risk factors with genetic risk factors in the emergence of suicidal behavior. METHODS Here, we review the literature on suicide epigenetics over the past 10 years. RESULTS There has been significant progress in the field of suicide epigenetics, with emerging findings in the brain-derived neurotrophic factor and hypothalamic-pituitary-adrenal axis genes. LIMITATIONS Studying patient subgroups is needed in order to extract more comparable and reproducible epigenetic findings in suicide. CONCLUSIONS It is crucial to consider suicidal patients or suicide victims' distal and proximal past history e.g., early-life adversity and psychiatric disorder in epigenetic studies of suicidality.
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Affiliation(s)
- Serina Cheung
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada
| | - Julia Woo
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada; Faculty of Medicine, University of Toronto, Canada
| | - Miriam S Maes
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada
| | - Clement C Zai
- Neurogenetics Section, Tanenbaum Centre for Pharmacogenetics, Molecular Brain Science, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Canada; Division of Brain and Therapeutics, Department of Psychiatry, University of Toronto, Canada; Institute of Medical Science, University of Toronto, Canada; Laboratory Medicine and Pathobiology, University of Toronto, Canada; Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA.
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Lopez-Castroman J, Jaussent I, Gorwood P, Courtet P. Activation syndrome induced by the antidepressant tianeptine and suicidal ideation: Evidence from a large depressed outpatient sample. Prog Neuropsychopharmacol Biol Psychiatry 2020; 97:109762. [PMID: 31526830 DOI: 10.1016/j.pnpbp.2019.109762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 09/09/2019] [Accepted: 09/13/2019] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To determine the characteristics of the activation syndrome (AS) that predict the emergence or worsening of suicidal ideation (SI) in the first month of antidepressant treatment with tianeptine, as well as the temporal relationship between both conditions. METHOD A naturalistic sample of 2422 depressed outpatients starting a new antidepressant treatment with tianeptine was assessed at 2, 4 and 6 weeks of follow-up using validated questionnaires. Four main dimensions of AS were examined: impulsivity, sleep problems, anxiety and agitation. RESULTS The emergence of an AS was more likely in long-lasting depressive episodes, but less likely if the patient responded to the antidepressant or benzodiazepines were added as an add-on treatment. Treatment-emergent SI was strongly associated to the presence of an AS, particularly in case of sleep problems (OR = 8.42) or impulsivity upsurges (OR = 3.89), even after adjustment for all relevant confounding factors. CONCLUSIONS Our findings suggest a dose-effect mechanism modulating the relationship between treatment-related SI and AS. AS symptoms may need to be monitored closely in the weeks that follow the introduction of an antidepressant treatment.
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Affiliation(s)
- Jorge Lopez-Castroman
- Inserm u1061, Université de Montpellier, 39 Avenue Charles Flahault, 34090 Montpellier, France; Department of Psychiatry, Nimes University Hospital, 4 Rue du Professeur Robert Debré, 30029 Nîmes, France; CIBERSAM, Spain.
| | - Isabelle Jaussent
- Inserm u1061, Université de Montpellier, 39 Avenue Charles Flahault, 34090 Montpellier, France
| | - Philip Gorwood
- Sainte-Anne Hospital (CMME), INSERM U894, 1 Rue Cabanis, 75014 Paris, France
| | - Philippe Courtet
- Inserm u1061, Université de Montpellier, 39 Avenue Charles Flahault, 34090 Montpellier, France; Department of Emergency Psychiatry and Acute Care, Montpellier University Hospital, 371 Av. du Doyen Gaston Giraud, 34090 Montpellier, France
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Nobile B, Ramoz N, Jaussent I, Gorwood P, Olié E, Castroman JL, Guillaume S, Courtet P. Polymorphism A118G of opioid receptor mu 1 (OPRM1) is associated with emergence of suicidal ideation at antidepressant onset in a large naturalistic cohort of depressed outpatients. Sci Rep 2019; 9:2569. [PMID: 30796320 PMCID: PMC6385304 DOI: 10.1038/s41598-019-39622-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/18/2019] [Indexed: 12/18/2022] Open
Abstract
Antidepressants have been the object of an international controversy for about thirty years. Some patients are inclined to develop suicidal ideation (SI) at antidepressant onset; this phenomenon is known as Treatment Emergent Suicidal Ideation (TESI), and it has conducted regulatory bodies to prompt warnings on antidepressants. Since, few studies have explored the pharmacogenomics of TESI. Given the growing body of evidence connecting the opioidergic system with suicidal behavior (particularly mu opioid receptor (MOR)), we decided to examine the relationship between two genetic polymorphisms (SNPs) in the opioidergic system and TESI in a sample of 3566 adult depressed outpatients. General practitioners and psychiatrists throughout France followed participants for 6 weeks after an initial prescription of tianeptine, an antidepressant treatment with mu agonism. Suicidal ideation was assessed with the item 10 of the Montgomery-Asberg Depression Rating Scale (item dedicated to SI) at baseline, and after 2 weeks, 4 weeks and 6 weeks. We analysed rs1799971 from the OPRM1 gene and rs105660 from the OPRK1 gene. Within the sample, 112 patients reported TESI while 384 did not. We found a significant association between AA genotype of rs1799971 and TESI even after adjustment for potential cofounders (OR = 1.93, 95% CI = [1.07; 3.49]; p-value = 0.03). On the other hand there were no significant association between rs1799971 and rs105560 with worsening of suicidal ideation or lifetime suicide attempts. Nevertheless, our results suggest a possible involvement of opioidergic system in TESI.
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Affiliation(s)
- B Nobile
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, Montpellier, France.
| | - N Ramoz
- INSERM UMRS1266, Institute of Psychiatry and Neuroscience of Paris, Université Sorbonne Paris Cité, Paris, France
| | - I Jaussent
- INSERM, U1061, Neuropsychiatry, University Montpellier, Montpellier, France
| | - Ph Gorwood
- INSERM UMRS1266, Institute of Psychiatry and Neuroscience of Paris, Université Sorbonne Paris Cité, Paris, France
| | - E Olié
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, Montpellier, France
- INSERM, U1061, Neuropsychiatry, University Montpellier, Montpellier, France
- FondaMental Foundation, Montpellier, France
| | - J Lopez Castroman
- INSERM, U1061, Neuropsychiatry, University Montpellier, Montpellier, France
- Department of Psychiatry, CHU Nimes, Nimes, France
| | - S Guillaume
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, Montpellier, France
- INSERM, U1061, Neuropsychiatry, University Montpellier, Montpellier, France
- FondaMental Foundation, Montpellier, France
| | - Ph Courtet
- Department of Emergency Psychiatry and Post-Acute Care, CHU Montpellier, Montpellier, France
- INSERM, U1061, Neuropsychiatry, University Montpellier, Montpellier, France
- FondaMental Foundation, Montpellier, France
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Deflesselle E, Colle R, Rigal L, David DJ, Vievard A, Martin S, Becquemont L, Verstuyft C, Corruble E. The TRKB rs2289656 genetic polymorphism is associated with acute suicide attempts in depressed patients: A transversal case control study. PLoS One 2018; 13:e0205648. [PMID: 30308049 PMCID: PMC6181406 DOI: 10.1371/journal.pone.0205648] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 09/29/2018] [Indexed: 12/19/2022] Open
Abstract
INTRODUCTION Suicide Attempts (SA) are the main complications of Major Depressive Episodes (MDE) and are difficult to predict. Suicide is associated with the expression of Receptor Tyrosin-Kinase B (TRKB), the receptor of the Brain Derived Neurotrophic Factor (BDNF) involved in MDE. However, the impact of its genetic polymorphisms as predictive factors of SA should be clarified. Our main aim is to assess the association of 8 TRKB genetic polymorphisms and SA in depressed patients. MATERIAL AND METHODS In 624 patients currently experiencing an MDE in the context of Major Depressive Disorder (MDD) (METADAP study), we assessed the association between 8 TRKB genetic polymorphisms (rs1778933, rs1187352, rs2289658, rs2289657, rs2289656, rs3824519, rs56142442 and rs1439050) and acute (previous month) or past (older than one month) SA. Bonferroni corrections and multivariate analysis adjusted for age, sex, level of education, marital status, Hamilton Depression Rating Scale score and previous MDE were used. RESULTS The rs2289656 was associated with acute SA (CC = 28.5%, CT = 15.0% and TT = 11.5%, p = 0.0008). However, the other SNPs were not. Patients with the CC genotype had a higher rate of acute SA (28.5%) as compared to T carriers (14.6%) (adjusted OR = 2.2, CI95% [1.4; 3.5], p<0.0001). CONCLUSION The TRKB rs2289656 CC genotype is associated with a 2.2 fold higher risk of acute SA in depressed patients. If this result could be confirmed, this TRKB SNP may be assessed to contribute to the prediction of SA in depressed patients.
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Affiliation(s)
- Eric Deflesselle
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Département de Médecine Générale, Université Paris-Sud, Faculté de Médecine, Le Kremlin Bicêtre, France
| | - Romain Colle
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service Hospitalo-Universitaire de Psychiatrie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
| | - Laurent Rigal
- Département de Médecine Générale, Université Paris-Sud, Faculté de Médecine, Le Kremlin Bicêtre, France
| | - Denis J. David
- INSERM UMR-S1178, Université Paris-Sud, Faculté de Pharmacie, CESP, Université Paris-Saclay, Chatenay-Malabry, France
| | - Albane Vievard
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service Hospitalo-Universitaire de Psychiatrie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
| | - Séverine Martin
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service Hospitalo-Universitaire de Psychiatrie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
| | - Laurent Becquemont
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service de Génétique Moléculaire, Pharmacogénétique et Hormonologie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
| | - Céline Verstuyft
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service de Génétique Moléculaire, Pharmacogénétique et Hormonologie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
- Centre de Ressources Biologiques Paris Sud, Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France
| | - Emmanuelle Corruble
- INSERM UMR_S1178, Equipe “Dépression et Antidépresseurs”, Faculté de Médecine, CESP, Université Paris-Sud, Le Kremlin Bicêtre, France
- Service Hospitalo-Universitaire de Psychiatrie, Assistance Publique-Hôpitaux de Paris, Hôpitaux Universitaires Paris-Sud, Hôpital de Bicêtre, Le Kremlin Bicêtre, France
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González-Castro TB, Salas-Magaña M, Juárez-Rojop IE, López-Narváez ML, Tovilla-Zárate CA, Hernández-Díaz Y. Exploring the association between BDNF Val66Met polymorphism and suicidal behavior: Meta-analysis and systematic review. J Psychiatr Res 2017; 94:208-217. [PMID: 28756290 DOI: 10.1016/j.jpsychires.2017.07.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 06/17/2017] [Accepted: 07/20/2017] [Indexed: 12/20/2022]
Abstract
Suicide is a serious worldwide health problem of critical consequences. Nowadays genetic factors are considered to be an important cause of suicide. The association between Val66Met (rs6265) polymorphism of the BDNF gene and suicide behavior has been increasingly studied. The aim of this study was to perform a meta-analysis in order to unravel the possible association between BDNF gene Val66Met polymorphism and suicide behavior. These meta-analysis and systematic review were performed using 23 articles that searched for a genetic association between Val66Met and suicide behavior, including 4532 cases and 5364 control subjects. The association was analyzed following the models: allelic, homozygous, heterozygous, dominant and recessive. Also, analyses by ethnicity (Caucasian and Asian populations) were done following the same four models. When the overall population was evaluated, we found no evidence of association between the polymorphism Val66Met of BDNF (rs6265) and suicide behavior (Met vs. Val: OR: 1.01; 95% CI = 0.92-1.10). However, a significant increased risk was found in the subgroup analysis by ethnicity in Caucasian populations (Met-Met vs. Met-Val + Val-Val: OR: 1.96; 95% CI = 1.58-2.43) and Asian populations (Val-Val vs. Val-Met + Met: OR: 1.36; 95% CI = 1.04-1.78). Our results suggest there is no association between the BDNF gene Val66Met (rs6265) and suicide behavior in the overall population. However, ethnic differences can be observed and the BDNF Val66Met might increase the risk for suicide behavior in Asian and Caucasian populations. Further studies with larger samples are necessary in order to have conclusive outcomes.
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Affiliation(s)
- Thelma Beatriz González-Castro
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco, Mexico.
| | - Marisol Salas-Magaña
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico.
| | - Isela Esther Juárez-Rojop
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico.
| | | | - Carlos Alfonso Tovilla-Zárate
- División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco, Tabasco, Mexico.
| | - Yazmín Hernández-Díaz
- División Académica Multidisciplinaria de Jalpa de Méndez, Universidad Juárez Autónoma de Tabasco, Jalpa de Méndez, Tabasco, Mexico.
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