Non-violent Suicide Attempters Research Articles

Evaluation of neutrophile-to-lymphocyte ratio and lipid profile in non-violent suicide attempters: a mechanistic study.

Suicide is one of the most common causes of juvenile death. Screening suicide risk is quite challenging and even more difficult in subjects who have no psychiatric disorder or other suicide risk factors in their medical history. To date, the association of serum lipid profile and suicidal risk has been evaluated in patients with different psychiatric disorders, yielding conflicting results. Here, we aimed to investigate the lipid panel and neutrophil-to-lymphocyte ratio in the sera of people with a first episode of suicide attempt in western Iran. A total of 159 suicide attempters and 186 volunteers without history of suicide, aged 18-35 years, were evaluated in this experiment. Blood samples were collected between 8-10 AM and kept at 37 °C for blood clotting. We then analyzed the concentration of various lipid markers, including triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL), and high-density lipoprotein (HDL), using a series of enzymatic reactions. Additionally, we determined the neutrophil-to-lymphocyte ratio (NLR) by dividing the total number of neutrophils by the total number of lymphocytes after conducting peripheral blood cell counts. The concentration of TG was 94.2±5.8 mg/dL in males and 92.3±5.3 mg/dL in females. TC was 136.3±3.6 mg/dL in males and 152.7±4.4 in females, with a significant decrease in comparison with the control subjects (p less than 0.0001). NLR was 4.34±0.9 with a significant increase compared with the controls (P less than 0.002). (TG), (TC) and (LDL) levels in suicide attempters were significantly lower than in the control groups. Nevertheless, serum (HDL) levels in male and female suicide attempters were significantly higher than in the control group. Furthermore, NLR was significantly lower in the subjects with suicide attempts compared with the controls. Lower concentrations of (TG), (TC) and (LDL) along with higher NLR were associated with non-violent suicide attempts. These findings might be an effective tool in screening suicide risk in young adults.

Examining the Effects of COVID-19 on Suicide Attempts in Budapest: A Focus on Violent and Non-Violent Attempts

IntroductionIn Hungary, in contrast to most other countries, suicide deaths increased significantly during the first year of the COVID-19 epidemic (March to December 2020). Globally, the burden of emergency care in the healthcare system tended to decrease during the first period of the epidemic.ObjectivesOur research aimed to evaluate the changes in the number of intentional suicide attempts by violent and non-violent means during the first two years of the epidemic, compared to the trend before March 2020 in the Budapest metropolitan area and Pest County.MethodsWe analyzed psychiatric assessment reports of self-poisoning patients admitted to Péterfy Hospital’s Emergency Department and Clinical Toxicology from Jan 2019 to Dec 2021 to estimate non-violent suicide attempt trends. We analyzed patient data for violent suicide attempts treated at Dr. Manninger Jenő Trauma Centre from 2016-2021, focusing on trends during the first two years of the pandemic. Negative binomial regression estimates were used for interrupted time series analysis with Prais-Winsten regression, controlling for time and seasonal and autoregressive effects. We used change-point detection to examine the leveling of trends. The Institutional Review Board approved the research in both institutions. Approval numbers: 08-2022 (Péterfy Hospitaly) and 19-2021 (Traumatology Center).ResultsThe number of male non-violent suicide attempts decreased by 16.6% compared with the pre-epidemic period (p<0.001). A similar and significant decrease was observed in females and in the total population (Image 1). The female and total population trends, i.e., the decrease, were reversed by August 2020, and the male trends were reversed by October 2020. The total number of patients treated for violent suicide attempts increased significantly (p<0.05) during the first two years of the pandemic (Image 2). There was a slight increase in violent attempts in men and a small decrease in women, but these changes are not statistically significant.Image:Image 2:ConclusionsWe hypothesize that those who tried to end their life through non-violent drug use were less inclined to seek assistance because they were concerned about being hospitalized during the COVID-19 outbreak. The surge in violent attempts is striking, as it correlates with the rise in suicide fatalities documented in Hungary during the initial year of the outbreak. Our data was obtained from two prominent public hospitals in Budapest, enabling us to conduct a more concentrated and thorough examination of the circumstances in the capital.Disclosure of InterestNone Declared

Correlates of violent suicide attempts in patients with bipolar disorder

BackgroundSuicide is one of the leading causes of death in bipolar disorder (BD); violent suicide attempts are associated with the highest level of lethality. We aimed to evaluate factors related to the risk of violent suicide in a large naturalistic sample of patients with BD; in addition, we analyzed the rates of lifetime suicide attempts and the variables associated with suicidal behavior. MethodsWe recruited 847 patients with BD. Patients were grouped according to whether they had a lifetime history of suicide attempts and, among suicide attempters, subjects who had used a violent suicide method were compared with those who had attempted suicide with a nonviolent method. Comparisons were performed using χ2 tests for categorical variables and ANOVA for continuous variables. Logistic regression (LogReg) was used to identify explanatory variables associated with violent suicide attempts (dependent variable). ResultsTwo hundred and two patients (24%) had a lifetime history of suicide attempts. Subjects with at least one lifetime suicide attempt showed longer duration of illness (22.4±14.1 years vs 19.9±14.2 years: p 0.028), more lifetime hypomanic episodes (3.3±4.3 vs 2.3±3.1: p0.001), more lifetime depressive episodes (6.0±4.4 vs 4.7±4.1: p<0.001), higher rates of lifetime psychiatric comorbidities (50.0% vs 41.3%: p 0.029), higher rates of lifetime medical comorbidities (58.0% vs 48.9%: p 0.028) and higher rates of reduced HDL cholesterol (46.2% vs 36.7%: p 0.030). Among suicide attempters, fifty-two patients (30.6%) attempted suicide with a violent method. We found more men in the group of violent suicide attempters than in the group of nonviolent suicide attempters (65% vs 28%; p: <0.001). Moreover subjects with previous violent attempts showed higher mean values of weight (80.5±18.3 vs 69.4±14.7: p<0.001), body mass index (27.8±5.6 vs 25.2±4.7: p<0.003) and waist circumference (98.7±18.5 vs 92.4±14.3: p 0.032). The LogReg analysis confirmed the association of violent attempts with male gender (p: <0.001; Phi: 0.35) and higher waist circumference (p: <0.001; Cohen’s d: 0.39). LimitationsIn our research we analyzed lifetime suicide attempts, but the sample does not include completed suicides, meaning that we are unable to test whether the results are generalizable to suicide deaths. Moreover, some relevant variables, such as medical comorbidities/metabolic parameters at the time of suicide attempts and previous medication, were not collected. Another limitation concerns the heterogeneity of recruited patients in terms of clinical characteristics (e.g.: medical conditions, drug treatments), with potential confounding factors. ConclusionsThe present study confirms the association between male gender and violent suicide and suggests a correlation between obesity and the use of violent suicide methods. The relationship between obesity and suicidal behaviour is worthy of interest and deserves to be explored by further studies.

Relationship between chronobiological thyrotropin and prolactin responses to protirelin (TRH) and suicidal behavior in depressed patients

BackgroundSo far, investigations of the relationships between suicidality and the activity of the thyrotropic and lactotropic axes are scarce and have yielded conflicting results. MethodsWe studied the thyrotropin (TSH) and prolactin (PRL) responses to 0800h and 2300h protirelin (TRH) stimulation tests, carried out on the same day, in 122 euthyroid DSM-5 major depressed inpatients with suicidal behavior disorder (SBD) (either current [n=71], or in early remission [n=51]); and 50 healthy hospitalized controls. ResultsBaseline TSH and PRL measurements did not differ across the 3 groups. In SBDs in early remission, the TSH and PRL responses to TRH tests (expressed as the maximum increment above baseline value after TRH [Δ]) were indistinguishable from controls. Current SBDs showed (1) lower 2300h-ΔTSH and lower ΔΔTSH values (differences between 2300h-ΔTSH and 0800h-ΔTSH) than controls and SBDs in early remission; and (2) lower baseline free thyroxine (FT4B) levels than controls. In the current SBD group, ΔΔPRL values (differences between 2300h-ΔPRL and 0800h-ΔPRL) were correlated negatively with lethality. Moreover, in current SBDs (1) violent suicide attempters (n=15) showed lower FT4B levels, lower TSH-TRH responses (both at 0800h and 2300h), and lower ΔΔTSH and ΔΔPRL values than controls, while (2) non-violent suicide attempters (n=56) showed lower ΔΔTSH values than controls and higher TSH-TRH responses (both at 0800h and 2300h) than violent suicide attempters. ConclusionsOur results suggest that central TRH secretion is not altered in depressed patients with SBD in early remission. The findings that current SBDs exhibit both decreased FT4B levels and decreased evening TSH responses (and consequently, decreased ΔΔTSH values) support the hypothesis that hypothalamic TRH drive is reduced—leading to an impaired TSH resynthesis in the pituitary during the day after the morning TRH challenge. In violent suicide attempters, the marked abnormalities of TRH test responses might indicate a greatest reduction in hypothalamic TRH drive. These results further strengthen the possibility that a deficit in central TRH function may play a key role in the pathogenesis of suicidal behavior.

Serum cholesterol and Suicide in first episode psychosis: A preliminary study.

Background:Low levels of cholesterol have been described in suicide behavior including among those individuals who have an increased tendency for impulsivity. Violent suicide attempters show significantly lower cholesterol levels than nonviolent suicide attempters. The suicide rate is particularly high in the prodromal and early phase of schizophrenia. It is unclear if there is a psychopathological relationship between early psychosis, suicide, and cholesterol levels. The present study examines levels of cholesterol and suicide behavior in a cohort of early psychosis.Methodology:Sixty admitted patients with the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, diagnosis of nonaffective schizophrenia spectrum disorder (early psychosis) were assessed in a naturalistic cross-sectional, cohort study. Psychopathology was assessed with the Positive and Negative Symptom Scale for Schizophrenia (PANSS), Hamilton Depression Rating Scale, and Scale for Impact of Suicidality–Management, Assessment and Planning of Care (SIS-MAP). Serum levels of cholesterol were estimated in the cohort as well. The findings were analyzed for a clinical correlation of cholesterol levels, suicidal attempters, and psychopathology.Results:Out of 60 patients, 13 patients had a suicide attempt in the recent past. No serum cholesterol abnormality (3.7 ± 1.2 mmol/L) was observed in patients as a group and those with low suicidality (SIS-MAP <17, serum cholesterol: 4.1 ± 1.3 mmol/L). However, low levels of cholesterol were observed in a subgroup with severe suicidality (SIS-MAP >33; serum cholesterol: 3.5 ± 1.4 mmol/L). Females with moderate suicidality showed statistically significant lower cholesterol levels than males (P = 0.047).Conclusions:The study suggests lower levels of cholesterol in patients of psychosis with severe suicidal thoughts and depression in early psychosis. More research is required in this field to determine the neurochemistry of suicide behavior in psychosis and its significance in the prediction of suicidal behavior.

Association between total serum cholesterol and suicide attempts in subjects with major depressive disorder: Exploring the role of clinical and biochemical confounding factors

ObjectivesWe tested whether serum total cholesterol levels might be associated with recent suicide attempts in subjects with major depressive disorder, after controlling for relevant individual characteristics. Design and methodsWe conducted a comparative cross-sectional study including consecutive inpatients with major depressive disorder. We differentiated subjects admitted for a recent serious (violent or non-violent) suicide attempt and those without such recent history. Total cholesterol was measured from fasting blood tests. ResultsAt univariate analyses, suicide attempters had levels of total cholesterol (174.0±45.7mg/dL) lower than non-attempters (193.9±42.6mg/dL) (p=0.004). This was confirmed among both violent (174.1±46.2mg/dL) and non-violent (173.8±46.1mg/dL) suicide attempters (p=0.035 and 0.016, respectively). However, logistic regression analyses, sequentially including demographic, clinical (comorbid alcohol and personality disorders), and biochemical factors, did not show any association between serum cholesterol and recent suicide attempts (p=0.172). Similar findings were observed in multinomial logistic regression analyses, for both violent (p=0.512) and non-violent (p=0.157) suicide attempts. ConclusionsOur findings do not support the hypothesis that serum cholesterol and suicide attempts are associated among subjects with major depressive disorder. The identification of valid and accessible biological markers of suicidal behaviors still represents a challenge for future research.

Affective temperaments, as measured by TEMPS-A, among self-poisoning nonlethal suicide attempters

Suicidal behaviors are serious public health problems. The prominent association of mood disorders with suicide, along with the renaissance of the spectrum concept of psychiatric disorders in the recent decades, prioritizes the investigation of temperament variants in suicidal individuals. This study aimed to explore the relationship between affective temperaments and nonviolent suicide attempts. We administered Temperament Evaluation of the Memphis, Pisa, Paris, and San Diego Auto questionnaire (TEMPS-A) to 141 (27 males and 114 females) consecutive self-poisoning non-lethal suicide attempters at a Medical Toxicology Center and a sex and age matched group of healthy individuals (28 males, 112 females). Female suicide attempters scored significantly higher in depressive, cyclothymic, irritable, and anxious temperaments compared with female controls, whereas male cases’ scores were significantly higher in depressive and anxious subscales compared with control males. Except for hyperthymic temperament which did not reveal any significant effects, depressive (OR: 11.5), cyclothymic (OR: 3.8), irritable (OR: 2.3), and anxious (OR: 8.8) temperaments were predictors for nonviolent suicide attempts. Therefore, this study replicated the evidence for the strong association of depressive temperament with suicide attempts. The hyperthymic temperament appeared to have neither protective nor predisposing influence. Further studies are needed to identify the role of this independent temperament.

Violent and non-violent methods of attempted and completed suicide in Swedish young men: the role of early risk factors.

BackgroundThere is a paucity of studies on the role of early risk factors for the choice of methods for violent suicide attempts. Adolescent risk factors for the choice of violent or non-violent methods for suicide attempts and the risk of subsequent suicide were studied using a longitudinal design.MethodsA national Swedish cohort of 48 834 18–20-year-old young men conscripted for military service from 1969 to 1970 was followed through official registers during a 37-year period. Two questionnaires concerning their psychosocial background were answered by each conscript. Cox proportional hazard regression analyses were used to estimate the risk for different methods of attempted suicide and later suicide.ResultsA total of 1195 (2.4 %) men had made a suicide attempt and of these, 133 (11.1 %) committed suicide later. The number of suicide victims among the non-attempters was 482 (1 %). Half of the suicides occurred during the same year as the attempt. Suicide victims had earlier onset of suicidal behaviour and had more often used hanging as a method of attempted suicide than those who did not later commit suicide. The early risk factors for both violent and non-violent methods of suicide attempt were quite similar.ConclusionViolent suicide attempts, especially by hanging, are associated with a clearly elevated suicide risk in men and require special clinical and public health attention. The early risk factors related to the choice of either a violent or a non-violent suicide attempt method are interlinked and circumstantial factors temporally close to the suicide attempt, such as access to a specific method, may partly explain the choice of method.

Cholesterol, CSF 5-HIAA, violence and intent in suicidal men

Associations between suicide, violent behaviour and both hypocholesterolaemia and low 5-hydroxyindolacetic acid (5-HIAA) in the cerebrospinal fluid (CSF) have been suggested. The relationships between lipids, the serotonergic system, suicidal and aggressive behaviors are complex. We explored relationships between serum cholesterol, CSF 5-HIAA, the planning subscale of suicide intent and violence of attempted suicide method in 13 medication-free male suicide attempters and eight healthy volunteers. Serum high-density lipoprotein cholesterol (HDL-C) levels were significantly lower in suicide attempters than in controls. HDL-C showed a significant positive correlation with the planning subscale of suicide intent in non-violent suicide attempters. A positive association was observed between CSF 5-HIAA and serum cholesterol in suicides. The role of cholesterol may be different in planned non-violent suicide attempts compared with violent suicide attempts.

Cholesterol and CSF 5-HIAA in attempted suicide

BackgroundLow serum cholesterol has been linked to suicide and violent behaviour. The same kind of associations has been reported regarding low levels of 5-hydroxyindolacetic acid (5-HIAA) in the cerebrospinal fluid (CSF) and suicidal behaviour. The hypothesis of the link between serum cholesterol and suicide incorporate serotonin. It proposes that low cholesterol is related to altered serotonergic neurotransmission. A correlation between CSF 5-HIAA and serum cholesterol has been shown in animal studies, but has not been found in humans. AimTo study the interrelationship between serum cholesterol and CSF 5-HIAA in suicide attempters. Since both cholesterol and CSF 5-HIAA are associated with suicide and violent suicide attempts, we also investigated the correlation with suicide, violent suicide attempt method, suicide intent, hopelessness and depression severity. MethodsSerum total cholesterol and CSF 5-HIAA were measured in 42 medication free suicide attempters. Patients were assessed with Becks's Hopelessness scale (BHS), Suicide Intent Scale (SIS) and Montgomery–Åsberg depression rating scale (MADRS) and followed-up for causes of death. ResultsSerum total cholesterol and CSF 5-HIAA showed a significant positive correlation adjusted for age, body mass index and substance abuse diagnosis. Cholesterol and CSF 5-HIAA levels did not differ between violent and non-violent suicide attempters or between suicide completers and survivors. ConclusionsThese findings indicate that the serotonergic system may be connected to serum cholesterol in patients with a recent suicide attempt.

P03-294 - Cholesterol and CSF 5-HIAA in attempted suicide

IntroductionLow serum cholesterol has been linked to suicide and violent behaviour. The same kind of associations has been reported regarding low levels of 5-hydroxyindolacetic acid (5-HIAA) in the cerebrospinal fluid (CSF) and suicidal behaviour. The hypothesis of the link between serum cholesterol and suicide incorporate serotonin. It proposes that low cholesterol is related to reduced serotonergic neurotransmission, which in turn, is linked to violent and suicidal behaviour. A correlation between CSF 5-HIAA and serum cholesterol has been shown in animal-studies, but has not been found in humans.AimsTo study the interrelationship between serum cholesterol and CSF 5-HIAA in suicide attempters. Since both cholesterol and CSF 5-HIAA are associated with suicide and violent suicide-attempts, we also investigated the correlation with suicide, violent suicide attempt method, suicide intent, hopelessness and depression severity.MethodsSerum total cholesterol and CSF 5-HIAA was measured in 42 medication free suicide attempters. Patients were assessed with Becks‘s Hopelessness scale (BHS), Suicide Intent Scale (SIS) and Montgomery-Åsberg depression rating scale (MADRS) and followed-up for causes of death.ResultsSerum total cholesterol and CSF 5-HIAA showed a significant positive correlation adjusted for age, body mass index and substance abuse diagnosis. Cholesterol and CSF 5-HIAA levels did not differ between violent and non-violent suicide attempters or between suicide completers and survivors.ConclusionsThese findings indicate that the serotonergic system may be connected to serum cholesterol in patients with a recent suicide attempt.

Bipolar disorder first episode and suicidal behavior: are there differences according to type of suicide attempt?

The objective of this study was to test the hypothesis that the polarity of the first mood episode may be a marker for suicidal behavior, particularly the violent subtype. One hundred and sixty-eight patients diagnosed with bipolar disorder (DSM-IV) were grouped according to type of first episode: depression or manic/hypomanic. Groups were compared for demographic and clinical variables. We performed logistic regression in order to test the association between first episode polarity and suicidal behavior. We found that depressed patients have a lifetime history of more suicide attempts. However, univariate analysis of number of suicide attempts showed that the best model fits the bipolar II subtype (mean square = 15.022; p = 0.010) and lifetime history of psychotic episodes (mean square = 17.359; p = 0.021). Subgrouping the suicide attempts by subtype (violent or non-violent) revealed that manic/hypomanic patients had a greater tendency toward attempting violent suicide (21.2 vs. 14.7%, X(2) = 7.028, p = 0.03). Multiple logistic regression analysis confirmed this result. Depressed patients had more suicide attempts over time, which could be explained by the higher prevalence of bipolar II subtype in this group, whereas manic/hypomanic patients had a lifelong history of more frequent violent suicide attempts, not explained by any of the variables studied. Our results support the evidence that non-violent suicide attempters and violent suicide attempters tend to belong to different phenotypic groups.

Interleukin-6 Is Elevated in the Cerebrospinal Fluid of Suicide Attempters and Related to Symptom Severity

Depressive disorders are associated with immune system alterations that can be detected in the blood. Cytokine concentrations in cerebrospinal fluid (CSF) and their relationship to aspects of suicidality have previously not been investigated. We measured interleukin-1beta, interleukin-6 (IL-6), interleukin-8, and tumor necrosis factor-alpha (TNF-alpha) in CSF and plasma of suicide attempters (n = 63) and healthy control subjects (n = 47). Patients were classified according to diagnosis and violent or nonviolent suicide attempt. We evaluated suicidal ideation and depressive symptoms using the Suicide Assessment Scale and the Montgomery-Asberg Depression Rating Scale (MADRS). We also analyzed the relation between cytokines and monoamine metabolites 5-hydroxyindoleacetic acid (5-HIAA), homovanillic acid (HVA), and 3-methoxy-4-hydroxyphenylglycol (MHPG) in CSF, as well as the integrity of the blood-brain barrier as reflected by the CSF:serum albumin ratio. IL-6 in CSF was significantly higher in suicide attempters than in healthy control subjects. Patients who performed violent suicide attempts displayed the highest IL-6. Furthermore, there was a significant positive correlation between MADRS scores and CSF IL-6 levels in all patients. IL-6 and TNF-alpha correlated significantly with 5-HIAA and HVA in CSF, but not with MHPG. Cytokine levels in plasma and CSF were not associated, and patients with increased blood-brain barrier permeability did not exhibit elevated cytokine levels. We propose a role for CSF IL-6 in the symptomatology of suicidal behavior, possibly through mechanisms involving alterations of dopamine and serotonin metabolism.

Affective temperaments, as measured by TEMPS-A, among nonviolent suicide attempters

Background The aim of this study was to investigate the role of affective temperaments in suicidal behavior. Method Using the standardized Hungarian version of the full-scale 110-item version of the TEMPS-A autoquestionnaire we compared the affective temperament-profiles of 150 consecutively investigated nonviolent suicide attempters (106 females and 44 males) and 302 age, sex and education matched normal controls (216 females and 86 males). Results Compared to controls, both female and male suicide attempters scored significantly higher in the four of the five affective temperaments, containing more or less depressive component (depressive, cyclothymic, irritable and anxious). On the other hand, however, no significant difference between the suicide attempters and controls was found for the hyperthymic temperament. Significantly higher rate of suicide attempters (90.0%) than controls (21.5%) have had some kind of dominant (mean score + 2SD or above) affective temperament. Compared to controls, depressive, cyclothymic, irritable and anxious temperaments were significantly more frequent and hyperthymic temperament was nonsignificantly less common among suicide attempters. Conclusions The findings support the strong relationship between depression and suicidal behavior even on temperamental level, and suggest that hyperthymic temperament does not have predisposing role for suicidal behavior at least in the case of nonviolent suicide attempters. Limitation As only nonviolent suicide attempters were studied, our findings should pertain only for this patient-population.

P.2.e.004 The Hamilton depression scale may not be an adequate tool for an assessment of mixed state symptoms

Previous reports have shown a significant relationship between suicide ideation and mixed depression. The aim of this study was to explore the prevalence and clinical characteristics of mixed depression among non-violent suicide attempters.Using a structured interview (modified Mini International Neuropsychiatric Interview) and assessing all the symptoms of 16 psychiatric diagnoses, the authors examined 100 consecutive nonviolent suicide attempters (aged 18–65) within 24 h after their attempts. Mixed depression was defined as a major depressive episode (MDE)/dysthymic disorder plus 3 or more co-occurring hypomanic symptoms, according to the definition validated by Akiskal and Benazzi [Akiskal, H.S., Benazzi, F., 2003a. Delineating depressive mixed states: Their therapeutic significance. Clin. Approaches Bipolar Disord. 2, 41–47, Akiskal, H.S., Benazzi, F., 2003b. Family history validation of the bipolar nature of depressive mixed states. J. Affect. Disord. 73, 113–122.].Current mixed depression was present in 63.0% in the total sample, and in 70.8% among the 89 depressive suicide attempters. Irritability, distractibility and psychomotor agitation were present in more than 90% of the subjects with mixed depression. The rate of mixed depression was significantly higher among bipolar than non-bipolar depressive suicide attempters (90% vs. 62%). Patients with mixed depression had the following concurrent disorders: bipolar disorders 41.0%, panic disorder 30.0%, generalized anxiety disorder 89.0%, alcohol abuse/dependence 56.0%, and substance abuse 27.0%. Mixed depression versus non-mixed depression had the following significant associations (odds ratio = OR): females 2.4, bipolar II disorder 9.3, generalized anxiety disorder 41.3, irritability 101.6 and psychomotor agitation 61.1.The study didn't include suicide attempters with very high risk of fatality.The important new finding of this study is the very high prevalence of mixed depression among depressed suicide attempters. The rates of mixed depression among bipolar and non-bipolar depressive suicide attempters were much higher than previously reported among nonsuicidal bipolar II and unipolar depressive outpatients, suggesting that suicide attempters come mainly from mixed depressives with predominantly bipolar II base. Irritability and psychomotor agitation were the strongest predictors of suicide attempt. From a public health standpoint, our data highlight the necessity of detecting and treating mixed (bipolar) depression in the prevention of suicidal behaviour.

Fetal and childhood growth and the risk of violent and non-violent suicide attempts: a cohort study of 318 953 men

Background:Inverse associations of birth length with suicide attempts have recently been reported. Whether growth during childhood alters this association is not known. The influences on patterns of growth in fetal...

Serum leptin and cholesterol values in violent and non-violent suicide attempters

Earlier studies have linked lipid metabolism to suicide and impulsive-aggressive behaviors. We previously reported that suicide attempters had significantly lower leptin and cholesterol levels than controls. Since lower cholesterol levels have been related to violence alone, we decided to evaluate serum total cholesterol and leptin levels in violent and non-violent suicide attempters. In the present study, 19 violent, 16 non-violent suicide attempters, and 20 age- and sex-matched healthy controls were compared for serum total cholesterol and leptin levels. Violent suicide attempters had significantly lower total cholesterol and leptin levels compared with those with non-violent suicide attempts. Our results suggest that low serum cholesterol and leptin levels are related to the following two dimensions of suicide attempts: suicidality and violence.

Heroin-dependent patients attempting and not attempting suicide: a comparison.

Heroin dependence is a serious illness associated with an increased risk of suicidal behaviour. There are many risk factors associated with heroin dependence. The current study examined the sociodemographic and clinical characteristics of a number of young adult heroin-dependent patients who had attempted suicide. We studied a group of 108 young adult heroin-dependent patients in our in-patient clinics. All diagnoses were made according to DSM-IV diagnostic criteria using the Structured Clinical Interview for DSM-IV Axis I-II Disorders (SCID-I, II). The age range of patients was 18-24 years. Their substance abuse histories were assessed by semistructured interview. The Addiction Severity Index (ASI) was administered to all the patients. Serum total cholesterol and high-density lipoprotein cholesterol (HDL-C) levels were routinely measured. In the statistical analyses, Student's t test, and chi-squared tests were applied. Of the 108 heroin-dependent patients, 40 (37.0%) had histories of attempted suicide. There was a statistically significant difference in the age at which heroin use had commenced between female attempters [mean = 16.82, standard deviation (SD) = 3.06] and nonattempters (mean = 18.32, SD = 2.68, t= 2.25, P < 0.05). Both the male (mean = 33.35, SD = 4.05) and the female (mean = 28.00, SD = 5.36) attempters had significantly higher ASI scores than did the male (mean = 20.16, SD = 3.80) and the female (mean = 18.88, SD = 4.14) nonattempters (t= 14.34, P < 0.001; t= 5.25, P < 0.001, respectively). A significant difference in total cholesterol (mean = 131.8, SD = 19.3; mean = 172.2, SD = 21.3, t= 3.9, P < 0.05) and HDL-C (mean = 30.9, SD = 1.0 and mean = 54.8, SD = 13.7; t= 5.1, P < 0.05) levels between the group of violent and nonviolent suicide attempters was revealed. These results suggest that suicide attempts in young adult heroin-dependent patients are associated with more profound biopsychosocial pathology and decreased serum cholesterol levels. In particular, low levels of total cholesterol and HDL-C might indeed be associated with violent suicide attempts in young heroin-dependent patients.

Violent and Nonviolent Methods of Suicide: Different Patterns May Be Found in Men and Women with Severe Depression

The objective of this study was to investigate violent and nonviolent suicidal acts in men and women with severe depression. The records of 98 suicide victims, who had been admitted to the Department of Psychiatry, Lund University Hospital, Sweden between 1956 and 1969, were evaluated and the subjects were monitored up to 1998. The female group displayed a significant linear trend for nonviolent completed suicide after one suicide attempt, and even more significantly, after repeated attempts. A switch from only nonviolent suicide attempts to completed violent suicide was significantly more common in men than in women. These different progressions may contribute to the expected finding that men used violent methods for completed suicide more often than women.

Affective temperament-types and suicidal behaviour

Background:As the different affective temperament-types (depressive, hyperthymic, cyclothymic, irritable and anxious) play a significant role in the development and symptom-formation of bipolar and unipolar major mood episodes, the aim of this study was to examine these affective temperaments in persons making suicide attempts.Method:Using the Hungarian version of the full-scale 110-item version of the TEMPS-A questionnaire. we compared the affective temperament profiles of 150 nonviolent (106 female and 44 male) suicide attempters (121 of them have had current major depressive episode) and 717 normal controls (438 females and 279 males).Results:Compared to controls, both female and male suicide attempters scored significantly higher in four of the five temperaments, containing mWre or less depressive component (depressive, cyclothymic, irritable and anxious). On the other hand, however, no significant difference between suicide attempters and controls was found for the hyperthymic temperament scores. Significantly higher rate of suicide attempters (135/150=90.0%) than controls (138/717=19.2%) have had some kind of dominant (mean score + 2 SD or above) affective temperament (p=0.0001).Conclusion:The findings support the strong relationship between depression and suicidal behaviour even on temperamental level, suggesting that hyperthymic temperament has no predisposing role for suicidal behaviour at least in case of nonviolent attempters. As current depression and dysregulated central serotonergic function are well-known suicide risk factors, these findings are also in good agreement with recent results on the significant relationship between the s allele of the serotonin transporter gene and depressive, cyclothymic, irritable and anxious temperaments, but not with hyperthymic temperament.