INTRODUCTION: Zolpidem is one of the most commonly prescribed nonbenzodiazepine hypnotic drugs for insomnia. Published epidemiological studies linked zolpidem with the risk of suicide. However, to date, no meta-analysis investigated this association. Hence, we systematically reviewed and meta-analysed the current evidence from real-world studies reporting the risk of suicide with the use of zolpidem. METHODS: Medline (Ovid), Embase (Ovid), and PsycINFO databases were searched from inception till June 2021 for real-world evidence studies reporting the risk of suicide with the use of zolpidem. The quality assessment of included studies was assessed using the New-Castle Ottawa Scale (NOS). Random-effect meta-analysis was performed using a generic inverse variance method. RESULTS: This meta-analysis was based on four studies with 344,753 participants, of which 42,279 were zolpidem users. The methodological quality of all the included studies was of high quality. A significantly increased risk of suicide or suicide attempt was found in zolpidem users compared to non-users, with a pooled relative risk of 1.88 (95% CI: 1.54 - 2.30). Furthermore, an increased risk of suicidal death was observed in zolpidem users compared to non-users, with a pooled relative risk of 1.82 (95% CI: 1.43 - 2.30). Dose-response analysis also revealed a significantly increased risk of suicide in patients receiving ≥ 180cDDD (cumulative defined daily doses) of zolpidem (124 times), followed by 90-179cDDD (113 times) and <90cDDD (93 times) of zolpidem compared to non-users. CONCLUSION: In conclusion, zolpidem use was associated with an increased risk of suicide or suicide attempt and suicidal death. Therefore, careful prescribing practices must be followed by considering the risk-benefit profile.

• Klíčová slova
• Death, Epidemiology, Insomnia, Meta-analysis, Suicide, Systematic review, Zolpidem,
• MeSH
• hodnocení rizik MeSH
• lidé MeSH
• pokus o sebevraždu * MeSH
• poruchy iniciace a udržování spánku * farmakoterapie   MeSH
• sebevražedné myšlenky MeSH
• zolpidem škodlivé účinky   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• metaanalýza MeSH
• práce podpořená grantem MeSH
• systematický přehled MeSH
• Názvy látek
• zolpidem MeSH

BACKGROUND: Suicide is a leading cause of death worldwide, and nonfatal suicide attempts, which occur far more frequently, are a major source of disability and social and economic burden. Both have substantial genetic etiology, which is partially shared and partially distinct from that of related psychiatric disorders. METHODS: We conducted a genome-wide association study (GWAS) of 29,782 suicide attempt (SA) cases and 519,961 controls in the International Suicide Genetics Consortium (ISGC). The GWAS of SA was conditioned on psychiatric disorders using GWAS summary statistics via multitrait-based conditional and joint analysis, to remove genetic effects on SA mediated by psychiatric disorders. We investigated the shared and divergent genetic architectures of SA, psychiatric disorders, and other known risk factors. RESULTS: Two loci reached genome-wide significance for SA: the major histocompatibility complex and an intergenic locus on chromosome 7, the latter of which remained associated with SA after conditioning on psychiatric disorders and replicated in an independent cohort from the Million Veteran Program. This locus has been implicated in risk-taking behavior, smoking, and insomnia. SA showed strong genetic correlation with psychiatric disorders, particularly major depression, and also with smoking, pain, risk-taking behavior, sleep disturbances, lower educational attainment, reproductive traits, lower socioeconomic status, and poorer general health. After conditioning on psychiatric disorders, the genetic correlations between SA and psychiatric disorders decreased, whereas those with nonpsychiatric traits remained largely unchanged. CONCLUSIONS: Our results identify a risk locus that contributes more strongly to SA than other phenotypes and suggest a shared underlying biology between SA and known risk factors that is not mediated by psychiatric disorders.

• Klíčová slova
• Genetic correlation, Genome-wide association study, Pleiotropy, Polygenicity, Suicide, Suicide attempt,
• MeSH
• celogenomová asociační studie MeSH
• depresivní porucha unipolární * genetika   MeSH
• duševní poruchy * genetika   MeSH
• jednonukleotidový polymorfismus MeSH
• lidé MeSH
• pokus o sebevraždu MeSH
• rizikové faktory MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH

Markers of chronic infection Toxoplasma gondii (Nicolle et Manceaux, 1908) have been associated with suicidal self-directed violence (SSDV). We present the results of the first study relating T. gondii IgG serology with suicide attempts and suicidal ideation in United States Veterans, known to have higher suicide rates than members of the general population. We also related T. gondii serology to SSDV risk factors, including valid and reliable measures of trait impulsivity, aggression, self-reported depression, and sleep disturbance. We recruited 407 Veterans enrolled at three Veterans Affairs Medical Centers with mean (S.D.) age = 45.6 (11.6) years; 304 men (74.7%); 203 with a history of SSDV and 204 with no history of any self-directed violence (SDV). Seropositivity and serointensity, categorised as high (top quartile) or low (lower three quartiles), were analysed in relationship to SSDV, suicidal ideation and clinical risk factors using age and gender-adjusted linear and logistic methods, after transformations and nonparametric tests when appropriate. Associations between seropositivity and SSDV and its risk factors were not significant in all groups. High serointensity, while not associated with SSDV or repeat suicide attempts, was positively associated with suicidal ideation, depression, impulsivity, and daytime dysfunction due to sleepiness (p < 0.05), but only in Veterans with a history of SSDV. In Veterans without a history of SDV, no associations were significant. These associations remained significant after adjustment for certain socioeconomic factors (i.e., income, homelessness, military rank). Including education in the model downgraded the statistical significance of suicidal ideation and depression to statistical trends, but the significance of associations with impulsivity and daytime dysfunction due to sleepiness remained. Major limitations include the cross-sectional design, overall low seropositivity within the sample, and potentially spurious results due to multiple comparisons. Thus, the results of this report need to be replicated in larger samples, ideally longitudinally.

• Klíčová slova
• United States, depression, impulsivity, sleep impairment, suicidality,
• MeSH
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• pokus o sebevraždu statistika a číselné údaje   MeSH
• protilátky protozoální krev   MeSH
• rizikové faktory MeSH
• sebevražda statistika a číselné údaje   MeSH
• sebevražedné myšlenky MeSH
• Toxoplasma * MeSH
• toxoplazmóza * epidemiologie   psychologie   MeSH
• veteráni váleční * statistika a číselné údaje   psychologie   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Spojené státy americké epidemiologie   MeSH
• Názvy látek
• protilátky protozoální MeSH

OBJECTIVE: More than 90% of people who attempt suicide have a psychiatric diagnosis; however, twin and family studies suggest that the genetic etiology of suicide attempt is partially distinct from that of the psychiatric disorders themselves. The authors present the largest genome-wide association study (GWAS) on suicide attempt, using cohorts of individuals with major depressive disorder, bipolar disorder, and schizophrenia from the Psychiatric Genomics Consortium. METHODS: The samples comprised 1,622 suicide attempters and 8,786 nonattempters with major depressive disorder; 3,264 attempters and 5,500 nonattempters with bipolar disorder; and 1,683 attempters and 2,946 nonattempters with schizophrenia. A GWAS on suicide attempt was performed by comparing attempters to nonattempters with each disorder, followed by a meta-analysis across disorders. Polygenic risk scoring was used to investigate the genetic relationship between suicide attempt and the psychiatric disorders. RESULTS: Three genome-wide significant loci for suicide attempt were found: one associated with suicide attempt in major depressive disorder, one associated with suicide attempt in bipolar disorder, and one in the meta-analysis of suicide attempt in mood disorders. These associations were not replicated in independent mood disorder cohorts from the UK Biobank and iPSYCH. No significant associations were found in the meta-analysis of all three disorders. Polygenic risk scores for major depression were significantly associated with suicide attempt in major depressive disorder (R2=0.25%), bipolar disorder (R2=0.24%), and schizophrenia (R2=0.40%). CONCLUSIONS: This study provides new information on genetic associations and demonstrates that genetic liability for major depression increases risk for suicide attempt across psychiatric disorders. Further collaborative efforts to increase sample size may help to robustly identify genetic associations and provide biological insights into the etiology of suicide attempt.

• Klíčová slova
• Genome-Wide Association Study, Mood Disorders, Polygenic Risk Scoring, Psychiatric Genomics Consortium, Schizophrenia, Suicide,
• MeSH
• bipolární porucha genetika   psychologie   MeSH
• celogenomová asociační studie MeSH
• depresivní porucha unipolární genetika   psychologie   MeSH
• lidé MeSH
• multifaktoriální dědičnost genetika   MeSH
• pokus o sebevraždu * MeSH
• rizikové faktory MeSH
• schizofrenie genetika   MeSH
• studie případů a kontrol MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• metaanalýza MeSH
• práce podpořená grantem MeSH

OBJECTIVE: The impact of the coronavirus disease 2019 (COVID-19) pandemic on suicidal thoughts and behavior has been widely hypothesized but remains largely unexplored at the population-level. We aimed to assess changes in suicide risk (SR) in people with and without mental disorders, before and during the COVID-19 pandemic in Czechia. METHODS: We analyzed data from three nationwide cross-sectional surveys of Czech adults (November 2017, May and November 2020). For the 2017 data collection, we employed paper and pencil interviewing, while for the two 2020 data collections, we used a mixed computer-assisted web interviewing and computer-assisted telephone interviewing approach. All samples were representative in terms of age, gender, education, and area of residence for the Czech adult population (18+). We used the Mini International Neuropsychiatric Interview to screen for mental disorders and SR. We calculated weighted prevalence rates with 95% confidence intervals (95% CI). RESULTS: When compared to baseline, we found a 4% and 6% increase in SR in individuals without mental disorders in pandemic surveys (1.95% (1.45%; 2.44%) vs. 6.29% (5.28%; 7.30%) and 8.42% (7.19%; 9.65%)). Relative to baseline, SR in people with major depressive episode or anxiety disorders was elevated in May and November 2020 (22.35% (17.64%; 27.06%) vs. 36.68% (32.45%; 40.91%) and 38.88% (34.51%; 43.25%)). CONCLUSIONS: We found substantially increased SR in both people with and without mental disorders, however, these changes could be partially related to differing data collection methods used in the baseline and subsequent surveys. Ongoing prevention, monitoring and evaluation of nationwide suicidality is warranted.HIGHLIGHTSWe found that suicide risk substantially increased during the pandemicSuicide risk was elevated in both individuals with and without mental disordersOur findings support increased suicide monitoring and prevention.

• Klíčová slova
• COVID-19, self-injurious behavior, suicidal ideation, suicidal thoughts and behavior, suicide,
• MeSH
• COVID-19 * MeSH
• depresivní porucha unipolární * epidemiologie   MeSH
• dospělí MeSH
• duševní poruchy * epidemiologie   MeSH
• lidé MeSH
• pandemie MeSH
• pokus o sebevraždu psychologie   MeSH
• průřezové studie MeSH
• průzkumy a dotazníky MeSH
• rizikové faktory MeSH
• sebevražda * psychologie   MeSH
• sebevražedné myšlenky MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Česká republika MeSH

Suicide is a serious health and social problem whose incidence varies between genders, age groups, geographical distribution and with influence of socio-political structure of society. It has been identified many risk factors and this behavior has etiological heterogeneity. There is no effective algorithm to predict suicidal activity in clinical practice, but increase the detection is associated with introducing the professional community and especially primary care physicians with clinical, psychological, sociological and biological factors whose can bring increasing of the recognition of vulnerable individuals and allow initiation of therapeutic interventions psychotherapy, psychopharmacology, neuromodulatory modalities or their combinations to achieve effective level of suicide prevention.

• Klíčová slova
• depressive disorder anxiety disorder., primary care, suicidal ideation, suicide, suicide attempt, suicide prevention,
• MeSH
• lidé MeSH
• pokus o sebevraždu * prevence a kontrola   MeSH
• prevence sebevražd * MeSH
• psychoterapie MeSH
• rizikové faktory MeSH
• sebevražedné myšlenky MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

OBJECTIVES: To assess the short term temporal variations in suicide risk related to the day of the week and national holidays in multiple countries. DESIGN: Multicountry, two stage, time series design. SETTING: Data from 740 locations in 26 countries and territories, with overlapping periods between 1971 and 2019, collected from the Multi-city Multi-country Collaborative Research Network database. PARTICIPANTS: All suicides were registered in these locations during the study period (overall 1 701 286 cases). MAIN OUTCOME MEASURES: Daily suicide mortality. RESULTS: Mondays had peak suicide risk during weekdays (Monday-Friday) across all countries, with relative risks (reference: Wednesday) ranging from 1.02 (95% confidence interval (CI) 0.95 to 1.10) in Costa Rica to 1.17 (1.09 to 1.25) in Chile. Suicide risks were lowest on Saturdays or Sundays in many countries in North America, Asia, and Europe. However, the risk increased during weekends in South and Central American countries, Finland, and South Africa. Additionally, evidence suggested strong increases in suicide risk on New Year's day in most countries with relative risks ranging from 0.93 (95% CI 0.75 to 1.14) in Japan to 1.93 (1.31 to 2.85) in Chile, whereas the evidence on Christmas day was weak. Suicide risk was associated with a weak decrease on other national holidays, except for Central and South American countries, where the risk generally increased one or two days after these holidays. CONCLUSIONS: Suicide risk was highest on Mondays and increased on New Year's day in most countries. However, the risk of suicide on weekends and Christmas varied by country and territory. The results of this study can help to better understand the short term variations in suicide risks and define suicide prevention action plans and awareness campaigns.

• MeSH
• časové faktory MeSH
• dovolená * MeSH
• lidé MeSH
• rizikové faktory MeSH
• sebevražda * statistika a číselné údaje   psychologie   MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

OBJECTIVES: This study aimed to examine the psychometric properties of the P4 suicide screener in a multinational sample. The primary goal was to evaluate the reliability and validity of the scale and investigate its convergent validity by analyzing its correlation with depression, anxiety, and substance use. STUDY DESIGN: The study design is a cross-sectional self-report study conducted across 42 countries. METHODS: A cross-sectional, self-report study was conducted in 42 countries, with a total of 82,243 participants included in the final data set. RESULTS: The study provides an overview of suicide ideation rates across 42 countries and confirms the structural validity of the P4 screener. The findings indicated that sexual and gender minority individuals exhibited higher rates of suicidal ideation. The P4 screener showed adequate reliability, convergence, and discriminant validity, and a cutoff score of 1 is recommended to identify individuals at risk of suicidal behavior. CONCLUSIONS: The study supports the reliability and validity of the P4 suicide screener across 42 diverse countries, highlighting the importance of using a cross-cultural suicide risk assessment to standardize the identification of high-risk individuals and tailoring culturally sensitive suicide prevention strategies.

• Klíčová slova
• Assessment, Cross-cultural, Suicide, Validation,
• MeSH
• lidé MeSH
• prevence sebevražd MeSH
• průřezové studie MeSH
• psychometrie MeSH
• reprodukovatelnost výsledků MeSH
• sebevražedné myšlenky * MeSH
• srovnání kultur * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

OBJECTIVE: The authors researched the incidence of suicidal thoughts and related factors in 123 patients of the psychiatric ward of the Hospital of České Budějovice with diagnosed attempted suicide in their medical history for the period from January 2013 – June 2015. METHODS: The research was carried out in two stages. At the beginning of the hospitalization, quantitative data collection was implemented using a semi-structured questionnaire, followed by qualitative research conducted with semi-structured phone conversation, based on previous patient's written consent. The research data were statistically processed to obtain information about the character of relations among individual characteristics. To quantify them, the Bayesian Network (BN) was constructed, and to identify relations among individual characteristics, the Hill-Climbing algorithm was used. Before deriving the network, variables were discretized. The network parameters were set based on a data matrix using the maximal plausibility method. RESULTS: The results of analysed set show that the probability of suicidal thoughts is high, achieving a value of 0.750 (0.781 for women and 0.724 for men). If the patient visits a contact centre for drug-addicted persons, the probability of suicidal thoughts decreases to 0.683. If the patient visits a psychotherapist, the values of 0.736 are achieved. If a daily care centre is visited, the estimated risk rises to 0.832 and the probability of the patient repetitively attempting suicide is 0.606. If the interviewed person regularly consumes alcohol, the probable relapse amounts to 0.616. But if the person consumes alcohol from time to time, the probability rises to 0.701. In case of abstinence, the probable relapse decreases to 0.565. CONCLUSIONS: The incidence of suicidal thoughts in observed patients was high, and the amount of risk was influenced by gender, by visiting follow-up care facilities, psychotherapy, and particularly by the frequency of alcohol consumption. Intermittent alcohol consumption is the highest-risk factor in connection with relapsing suicide. In case of psychiatric patients with attempted suicide in their medical history, all verified preventive and therapeutic procedures that can contribute to prevention of relapses should be used within follow-up professional care. Specific approach of the closest social environment, medical literacy of the population and state safety measures are important.

• Klíčová slova
• suicide, attempted suicide, alcohol, drugs, prevention, suicidal thoughts,
• MeSH
• anamnéza statistika a číselné údaje   MeSH
• dospělí MeSH
• incidence MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• pacienti hospitalizovaní psychologie   statistika a číselné údaje   MeSH
• pokus o sebevraždu psychologie   statistika a číselné údaje   MeSH
• prevence sebevražd MeSH
• průzkumy a dotazníky MeSH
• recidiva MeSH
• rizikové faktory MeSH
• sebevražda psychologie   statistika a číselné údaje   MeSH
• sebevražedné myšlenky * MeSH
• sekundární prevence metody   MeSH
• sexuální faktory MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladiství MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika epidemiologie   MeSH

OBJECTIVE: Suicidal behavior is heritable and is a major cause of death worldwide. Two large-scale genome-wide association studies (GWASs) recently discovered and cross-validated genome-wide significant (GWS) loci for suicide attempt (SA). The present study leveraged the genetic cohorts from both studies to conduct the largest GWAS meta-analysis of SA to date. Multi-ancestry and admixture-specific meta-analyses were conducted within groups of significant African, East Asian, and European ancestry admixtures. METHODS: This study comprised 22 cohorts, including 43,871 SA cases and 915,025 ancestry-matched controls. Analytical methods across multi-ancestry and individual ancestry admixtures included inverse variance-weighted fixed-effects meta-analyses, followed by gene, gene-set, tissue-set, and drug-target enrichment, as well as summary-data-based Mendelian randomization with brain expression quantitative trait loci data, phenome-wide genetic correlation, and genetic causal proportion analyses. RESULTS: Multi-ancestry and European ancestry admixture GWAS meta-analyses identified 12 risk loci at p values <5×10-8. These loci were mostly intergenic and implicated DRD2, SLC6A9, FURIN, NLGN1, SOX5, PDE4B, and CACNG2. The multi-ancestry SNP-based heritability estimate of SA was 5.7% on the liability scale (SE=0.003, p=5.7×10-80). Significant brain tissue gene expression and drug set enrichment were observed. There was shared genetic variation of SA with attention deficit hyperactivity disorder, smoking, and risk tolerance after conditioning SA on both major depressive disorder and posttraumatic stress disorder. Genetic causal proportion analyses implicated shared genetic risk for specific health factors. CONCLUSIONS: This multi-ancestry analysis of suicide attempt identified several loci contributing to risk and establishes significant shared genetic covariation with clinical phenotypes. These findings provide insight into genetic factors associated with suicide attempt across ancestry admixture populations, in veteran and civilian populations, and in attempt versus death.

• Klíčová slova
• Biological Markers, Depressive Disorders, Genetics, Schizophrenia Spectrum and Other Psychotic Disorders, Self-Harm, Suicide,
• MeSH
• celogenomová asociační studie * MeSH
• depresivní porucha unipolární * genetika   MeSH
• genetická predispozice k nemoci genetika   MeSH
• genetické lokusy genetika   MeSH
• jednonukleotidový polymorfismus genetika   MeSH
• lidé MeSH
• pokus o sebevraždu MeSH
• rizikové faktory MeSH
• sebevražedné myšlenky MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• metaanalýza MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH
• Research Support, U.S. Gov't, Non-P.H.S. MeSH