Social Support and Social Stress Among Suicidal Inpatients at Military Treatment Facilities: A Multidimensional Investigation

ABSTRACT

The associations between social support and stress with internalizing symptoms (depressive symptoms and hopelessness) and hazardous drinking were tested in an inpatient sample of suicidal military personnel. Baseline data from a randomized clinical trial were analyzed. Different sources of support and stressors in the social context of military personnel were differentially linked to internalizing symptoms and hazardous drinking. In the full sample ( n = 192), family and nonfamily support were both inversely associated with internalizing symptoms but not hazardous drinking. Family stress was positively associated with internalizing symptoms. In a subsample of service members who had a history of deployment ( n = 98), postdeployment social support was protective against internalizing symptoms, whereas deployment harassment was associated with increased odds of hazardous drinking. Results underscore the need for assessment of various dimensions of social support and stress to guide case formulation and optimize strategies to support patients' mental well-being and adaptive coping.

Resting-state network analysis of suicide attempt history in the UK Biobank

BACKGROUND

Prior research has identified altered brain structure and function in individuals at risk for self-directed violence thoughts and behaviors. However, these studies have largely utilized healthy controls and findings have been inconsistent. Thus, this study examined differences in resting-state functional network connectivity among individuals with lifetime suicide attempt(s) v. lifetime self-directed violence thoughts alone.

METHODS

Using data from the UK Biobank, this study utilized a series of linear regressions to compare individuals with lifetime suicide attempt(s) (n = 566) v. lifetime self-directed violence thoughts alone (n = 3447) on within- and between- network resting-state functional connectivity subnetworks.

RESULTS

There were no significant between-group differences for between-network, within-network, or whole-brain functional connectivity after adjusting for age, sex, ethnicity, and body mass index and performing statistical corrections for multiple comparisons. Resting-state network measures may not differentiate between individuals with lifetime suicide attempt(s) and lifetime self-directed violence thoughts alone.

CONCLUSIONS

Null findings diverge from results reported in smaller neuroimaging studies of suicide risk, but are consistent with null findings in other large-scale studies and meta-analyses. Strengths of the study include its large sample size and stringent control group. Future research on a wider array of imaging, genetic, and psychosocial risk factors can clarify relative contributions of individual and combined variables to suicide risk and inform scientific understanding of ideation-to-action framework.

Help-seeking among psychiatrically hospitalized military personnel at risk for suicide

INTRODUCTION

Promoting help-seeking is a key suicide prevention strategy. Yet, research on help-seeking patterns by high-risk individuals is limited. This study examined help-seeking among United States military Service members admitted for psychiatric inpatient care.

METHODS

Participants were active duty Service members (N = 111) psychiatrically hospitalized for a suicide-related event. Data were collected as part of a larger randomized controlled trial. Reported types and perceived helpfulness of resources sought 30 days before hospitalization were examined. Hierarchical binary logistic regressions were used to examine associations among types of helping resources, mental health treatment stigma, and perceived social support.

RESULTS

Approximately 90% of participants sought help prior to hospitalization, most frequently from behavioral health providers and friends. Accessed resources were generally considered helpful. Adjusting for covariates, mental health treatment stigma was not associated with seeking help from any resource type. Higher perceived social support was associated with greater likelihood of help-seeking from a friend (OR = 1.08, p = 0.013 [95% CI = 1.02, 1.14]). Marital status, education level, and organizational barriers were associated with specific types of resources, and/or not seeking help.

CONCLUSION

Help-seeking is a complex human behavior. Promoting help-seeking among vulnerable subgroups requires further understanding of multiple interconnected factors.

Cognitive flexibility and suicide risk indicators among psychiatric inpatients

Cognitive flexibility has been linked with positive psychological health outcomes, whereas cognitive rigidity has been linked with suicide risk. We examined associations among cognitive flexibility and certain suicide risk indicators among a sample of patients psychiatrically hospitalized for suicide risk (n = 40). Data were collected during two pilot randomized controlled trials. At baseline, cognitive flexibility was not associated with depressive symptoms, hopelessness, or severity of lifetime worst point suicide ideation. At 3-months post psychiatric discharge, higher baseline cognitive flexibility predicted significantly lower depressive symptoms and worst point suicide ideation in the past month, but did not predict lower hopelessness.

Understanding the clinical characteristics of lesbian, gay, and bisexual military service members and adult beneficiaries within an inpatient psychiatric sample

BACKGROUND

Limited knowledge exists regarding targets for suicide-focused care among high-risk United States (U.S.) civilian and military sexual minorities.

PURPOSE

This study aimed to understand the demographic and clinical characteristics of a suicidal sexual minority sample, psychiatrically hospitalized in military treatment facilities, to advance future targeted care for this vulnerable subgroup.

METHODS

Secondary analysis of baseline data from a multisite psychotherapy randomized controlled trial was performed comparing those who self-identified as lesbian, gay, or bisexual (LGB; n = 39) to heterosexual participants (n = 170).

RESULTS

LGB participants were more likely than heterosexual participants to be younger, female, never married, and enlisted rank. LGB participants reported significantly lower family support, higher perceived burdensomeness, lower acquired capability for suicide, and were twice as likely to report that they could not control their suicidal thoughts. LGB and heterosexual participants reported similar levels of other suicide risk indicators and similar lifetime suicidal ideation and attempt histories.

CONCLUSIONS

Compared to heterosexual participants, LGB participants reported increased risk indicators for suicide yet similar lifetime suicidal ideation and attempt histories. Suicide prevention programs should address the unique needs of this vulnerable subgroup. Interventions targeting family support, perceived burdensomeness, and controllability of suicidal thoughts may be promising.

A latent class analysis of physical, emotional, and sexual abuse history among suicidal inpatients

OBJECTIVE

Physical, emotional, and sexual abuse are subtypes of childhood abuse that may persist into adulthood. This study applied latent class analysis to describe the pattern of co-occurrence of these three abuse subtypes during childhood and adulthood and examined latent class differences in psychosocial characteristics and three types of suicide attempt history (aborted, interrupted, and actual).

METHODS

Data were drawn from a high-risk sample of 115 military service members and adult beneficiaries who were psychiatrically hospitalized following a suicide-related crisis.

RESULTS

Three latent classes were identified: Multiple and Persistent Abuse (Class One: 29.6%), Childhood Physical and Persistent Emotional Abuse (Class Two: 27.0%), and Minimal Abuse (Class Three: 43.5%). Females were more likely than males to report a history of Multiple and Persistent Abuse. After controlling for gender, the Multiple and Persistent Abuse Class had higher scores of depressive symptoms and hazardous drinking, poorer sleep quality, and increased social stress than the Minimal Abuse Class. Moreover, the Multiple and Persistent Abuse Class was associated with increased likelihood of lifetime interrupted suicide attempt (Odds Ratio [OR] = 3.81, 95% CI = 1.20, 12.07) and actual suicide attempt (OR = 3.65, 95% CI = 1.23, 10.85), and had the greatest number of total actual suicide attempt (1.82 times on average).

CONCLUSION

Co-occurrence of multiple subtypes of abuse across development is associated with higher psychosocial risk and history of suicide attempt. The assessment of specific subtypes of abuse and their timing may inform case conceptualization and the management of suicide risk among psychiatric inpatients.

Evaluating Suicide Risk Using the Reasons for Dying-Reasons for Living (RFD-RFL) Index in a Military Psychiatric Inpatient Setting

The present study aimed to explore reasons for dying (RFD) and reasons for living (RFL) among suicidal inpatients, conceptualize the RFD-RFL index, and examine whether suicide risk indicators were associated with the RFD-RFL index scores. Participants were military personnel (N = 167) psychiatrically hospitalized following a suicide-related crisis who provided baseline data as part of a randomized controlled trial. Family was the most commonly reported RFL (39.7%) and was the top ranked RFL for 65.9% of participants. The most frequently endorsed RFD categories included general descriptors of self (26.9%), general statements about escape (19.7%), and others/relationships (19.1%). Greater RFD-RFL index scores were associated with a greater wish to die relative to wish to live, greater hopelessness, and with a history of lifetime multiple suicide attempts. Endorsing more RFD relative to RFL may indicate heightened suicide risk. Results of this study identify the characteristics of RFD and RFL among a high-risk, military sample, and provide preliminary support for the clinical utility of evaluating the quantities of RFD and RFL. Clinicians are encouraged to explore RFD and RFL when working with suicidal patients. Future research may explore military-specific RFD and evaluate the validity of the proposed RFD-RFL index.

The Relationship between Trauma Exposure and Psychiatric Hospitalization for Suicide Ideation or Suicide Attempt among Patients Admitted to a Military Treatment Setting

Suicide attempts and psychiatric hospitalization represent the final outcomes of a complex dynamical system of interacting factors that influence a particular individual’s likelihood of engaging in suicidal behavior, as well as their ability to seek help prior to acting upon suicidal impulses. This study examined the association between different types of lifetime trauma exposure and the likelihood of psychiatric hospitalization following a suicide attempt (SA) rather than suicidal ideation (SI) alone. Electronic medical records for 1100 U.S. military service members and their dependents admitted to a military psychiatric inpatient setting for SA or SI were reviewed for documented lifetime trauma exposure history. Findings indicated that exposure to at least one childhood trauma of any type, and childhood neglect in particular, increased the likelihood that an individual would be hospitalized for SA rather than SI. Exploratory gender-stratified analyses demonstrated that childhood neglect, childhood sexual abuse, and adulthood traumatic loss may be linked with the likelihood of being hospitalized for SA. These findings demonstrate the importance of developing more detailed and nuanced conception of factors known to be associated with suicide as their effects may depend on details of their timing and nature, as well as their interactions with other systems.

Inpatient psychiatric care following a suicide-related hospitalization: A pilot trial of Post-Admission Cognitive Therapy in a military medical center

OBJECTIVE

Individuals with a recent suicidal crisis are typically admitted for inpatient psychiatric care. However, targeted inpatient interventions for suicide prevention remain sparse. Thus, this pilot randomized controlled trial evaluated a brief inpatient cognitive behavioral protocol, Post-Admission Cognitive Therapy (PACT) for the prevention of suicide.

METHODS

United States service members and beneficiaries (N = 24) psychiatrically hospitalized at a military medical center due to a recent suicidal crisis were randomized to receive either PACT plus Enhanced Usual Care (PACT + EUC) or EUC alone. Blinded follow-up assessments were conducted at one-, two-, and three-months post discharge. The degree of change and variability of response to PACT for repeat suicide attempt(s) (primary outcome), as well as depression, hopelessness, and suicide ideation (secondary outcomes) were examined.

RESULTS

Significant between-group differences in re-attempt status were not found. Reliable Change Index analyses indicated that among the most clinically severe participants, a greater proportion of PACT + EUC participants compared with EUC participants met criteria for clinically significant reductions on depression (40% versus 25%), hopelessness (67% versus 50%), suicide ideation (45% versus 33%), and posttraumatic stress symptomatology (40% versus 25%).

CONCLUSIONS

PACT is a promising inpatient cognitive behavioral intervention for suicide risk reduction. The efficacy of PACT is currently being evaluated in a well-powered multi-site randomized controlled trial.

Hazardous drinking and clinical correlates among suicidal patients receiving psychiatric inpatient care at military medical settings

BACKGROUND

To describe prevalence and identify clinical correlates of hazardous drinking among suicidal inpatients at military medical settings.

METHOD

Data were drawn from the baseline assessment of a multisite randomized controlled trial of Post-Admission Cognitive Therapy (PACT). Participants were military Service members or adult beneficiaries (N = 218) who were admitted to inpatient care following a suicide-related crisis. Hazardous alcohol use in the past year was assessed using the Alcohol Use Disorder Identification Test (AUDIT).

RESULTS

The average AUDIT score was 6.78 (SD = 7.87), with 28.9% reporting hazardous drinking (scored ≥8 on the AUDIT). Hazardous drinkers were more likely than nonhazardous drinkers to meet diagnosis of Substance Use Disorder (SUD; Odds Ratio [OR] = 5.96, 95% confidence intervals [CI] = 2.13, 16.71). Hazardous drinking was neither associated with measures of suicide ideation nor aborted or interrupted suicide attempt. However, hazardous drinkers had greater risk of having both single (RRR [Relative Risk Ratio] = 2.55, 95% CI = 1.18, 5.50) and multiple actual suicide attempts (RRR = 2.38, 95% CI = 1.06, 5.32) than nonhazardous drinkers. The association between hazardous drinking and single (but not multiple) actual suicide attempt remained significant after controlling for gender, depressive symptoms, hopelessness, Post-Traumatic Stress Disorder, and SUD (adjusted RRR = 2.48, 95% CI = 1.09, 5.65).

CONCLUSIONS

A history of actual suicide attempt is associated with hazardous alcohol use among suicidal psychiatric inpatients. Assessment of drinking and drug use may inform case conceptualization and treatment of suicide-related behaviors in psychiatric inpatient settings.

Lack of Emotional Awareness is Associated with Thwarted Belongingness and Acquired Capability for Suicide in a Military Psychiatric Inpatient Sample

OBJECTIVE

To examine potential links between facets of impulsivity and emotion dysregulation to components of the Interpersonal-Psychological Theory of Suicide (thwarted belongingness, perceived burdensomeness, and acquired capability) among U.S. military personnel.

METHOD

The current study performed secondary data analysis from a randomized control trial testing the efficacy of a cognitive therapy for 134 service members (71.64% male, 68.66% Caucasian; mean age: 30.14) admitted to a psychiatric inpatient unit for a suicide-related crisis. We utilized the Difficulties in Emotion Regulation Scale, the Barratt Impulsivity Scale, the Acquired Capability for Suicide Scale, and the Interpersonal Needs Questionnaire.

RESULTS

All emotion dysregulation dimensions and one impulsivity facet (attentional) were positively correlated with perceived burdensomeness and thwarted belongingness. Lack of emotional awareness was positively associated with acquired capability. After controlling for depression, hopelessness, and demographic covariates, lack of emotional awareness was significantly associated with both thwarted belongingness and acquired capability, but not perceived burdensomeness, and impulsivity dimensions did not link to any variable of interest.

CONCLUSIONS

Findings imply that individuals with reduced emotional awareness may have difficulty cultivating interpersonal bonds and be more vulnerable to elevated acquired capability. Lack of emotional awareness may be a potential contributor to both suicidal desire and capability.

Demographic and Clinical Characteristics of Military Service Members Hospitalized Following a Suicide Attempt versus Suicide Ideation

Psychiatric hospitalization for a suicide attempt (SA), rather than suicide ideation (SI) alone, is a stronger risk indicator for eventual suicide death. Yet, little is known about demographic and clinical characteristics differentiating those admitted for SA versus SI. Understanding these differences has implications for assessment and treatment. A retrospective review of electronic medical records (EMRs) was performed on service members (n = 955) admitted for SA or SI at the Walter Reed Army Medical Center between 2001-2006. Service members hospitalized for SA were younger compared to those hospitalized for SI. The proportion of women admitted for SA was significantly higher than those admitted for SI whereas their male counterparts showed the opposite pattern. Patients admitted for SA, versus SI, had significantly higher prevalence of adjustment disorder with mixed disturbance of emotion and conduct (MDEC), personality disorder not otherwise specified (PDNOS), and borderline personality disorder (BPD). Patients admitted for SI had significantly higher prevalence of adjustment disorder with depressed mood and deferred Axis II diagnosis, compared to those admitted for SA. There were no significant between-group differences in the average or median number of documented prior suicide attempts. Findings highlight the need for more standardized assessment, diagnostic decision-making, and documentation practices for all patients.

Pilot trial of post-admission cognitive therapy: Inpatient program for suicide prevention

Suicide remains a significant public health problem for the United States military. Trauma-related diagnoses such as acute stress disorder (ASD) or posttraumatic stress disorder (PTSD) may exacerbate suicide risk, particularly among service members psychiatrically hospitalized following suicide-related events. To date, treatments to address suicide risk and trauma symptomatology among service members within inpatient milieus have been nonexistent. To address this gap, a randomized controlled pilot trial of Post-Admission Cognitive Therapy (PACT) was conducted to evaluate a targeted cognitive-behavioral program among traumatized military personnel (N = 36) hospitalized following a recent suicide attempt. All participants met criteria for ASD or PTSD and were randomly assigned to receive either PACT and enhanced usual care (PACT + EUC) or EUC alone. PACT consisted of six 60- to 90-min individual psychotherapy sessions, adapted from Brown et al.'s (2005) cognitive therapy protocol for suicide prevention. Blinded follow-up assessments were conducted at 1-, 2-, and 3-months postpsychiatric discharge. The primary outcome was days until repeat suicide attempt. Secondary outcomes included depression, hopelessness, suicide ideation, and PTSD symptoms. Participants did not significantly differ in reattempt status. However, based on reliable change index analyses, a greater proportion of PACT + EUC versus EUC participants met criteria for clinically significant change on measures of depression (100% vs. 78%), hopelessness (83% vs. 57%), and PTSD symptom severity (100% vs. 38%), but not for suicide ideation (60% vs. 67%). PACT is an innovative inpatient protocol, currently under evaluation in a well-powered multisite RCT for its efficacy in reducing subsequent suicidal behaviors. (PsycINFO Database Record

Suicide ideation and self-efficacy to avoid suicidal action among psychiatrically hospitalized military personnel

Individuals with suicide ideation require self-efficacy to avoid engagement in suicidal behaviors. Low self-efficacy has been examined as a risk indicator for suicidal behaviors. The Self-Efficacy to Avoid Suicidal Action (SEASA) scale assesses self-efficacy to resist suicidal urges and was originally evaluated in a sample of adults receiving treatment for substance use disorders. The goal of this study was to explore the link between suicide ideation and self-efficacy to avoid suicidal action among a high-risk group of psychiatric inpatients. Military personnel psychiatrically hospitalized following a suicide-related event (N = 139) completed a modified version of the SEASA and provided a full history of suicidal behaviors. Data were analyzed using multiple linear regression. Severity of worst time point suicide ideation, endorsement of any current suicide ideation, and history of multiple lifetime suicide attempts were associated with lower self-efficacy to avoid suicidal action. Self-efficacy to avoid engagement in suicidal action is a belief that can be strengthened and practiced within evidence-based treatments such as cognitive behavior therapy for suicide prevention. Thus, providers are encouraged to target this type of self-efficacy in case conceptualization and treatment planning. Future research on how self-efficacy to avoid suicidal action can be effectively measured are needed.

Impulse control difficulties while distressed: A facet of emotion dysregulation links to Non-Suicidal Self-Injury among psychiatric inpatients at military treatment facilities

Links between emotion dysregulation, suicide ideation, and suicidal versus non-suicidal self-injury (NSSI) are poorly understood within military samples. United States service members and beneficiaries (N = 186), psychiatrically hospitalized following a suicidal crisis, completed the Difficulties in Emotion Regulation Scale (DERS; Gratz & Roemer, 2004), and reported lifetime suicide ideation, attempts, and NSSI. We expected that emotion dysregulation would positively associate with worst lifetime suicide ideation, multiple suicide attempt status, and lifetime NSSI. Suicide ideation severity and multiple suicide attempts did not associate with DERS components. Notably, difficulties with impulse control (feeling out of control while distressed) was positively associated with NSSI history. Theoretical models that clearly describe the role of emotion dysregulation in suicidal thoughts, its progression to suicidal actions, and NSSI are needed to advance clinical care for this highly vulnerable group. Longitudinal and micro-longitudinal study designs require further investigation.

The Link between Posttraumatic Stress Disorder and Functionality among United States Military Service Members Psychiatrically Hospitalized Following a Suicide Crisis

Posttraumatic stress disorder (PTSD) is one of the most commonly diagnosed psychiatric disorders in the United States and has been linked to suicidal thoughts and behaviors, yet the role of a PTSD diagnosis on functional impairment among suicidal individuals remains unknown. This study examined the association between PTSD status and functional impairment among military psychiatric inpatients admitted for acute suicide risk (N = 166) with a lifetime history of at least one suicide attempt. Measures of functionality included: (1) alcohol use; (2) sleep quality; (3) social problem-solving; and (4) work and social adjustment. Thirty-eight percent of the sample met criteria for PTSD. Women were more likely than men to meet criteria for PTSD (p = 0.007), and participants who met PTSD criteria had significantly more psychiatric diagnoses (p < 0.001). Service members who met PTSD criteria reported more disturbed sleep (p = 0.003) and greater difficulties with work and social adjustment (p = 0.004) than those who did not meet PTSD criteria. However, functionality measures were not significantly associated with PTSD status after controlling for gender and psychiatric comorbidity. Gender and number of psychiatric comorbidities other than PTSD were significant predictors of PTSD in logistic regression models across four functionality measures. Future studies should assess the additive or mediating effect of psychiatric comorbidities in the association between impaired functioning and PTSD. Clinicians are encouraged to assess and address functionality during treatment with suicidal individuals, paying particular attention to individuals with multiple psychiatric diagnoses.

Intimate partner relationship stress and suicidality in a psychiatrically hospitalized military sample

OBJECTIVE

Suicide among United States service members is a significant public health concern. Intimate partner relationship stress may contribute to suicide risk, as a failed or failing relationship is the most commonly documented stressor preceding military suicide attempts and deaths. However, little is known about the manner by which relationship stressors are associated with the experience of military suicidality.

METHODS

A sample of 190 psychiatrically hospitalized military personnel and adult dependents enrolled in an ongoing randomized controlled trial evaluating the efficacy of an inpatient cognitive behavioral treatment for suicidality were included in this study. Analyses examined depression, hopelessness, and suicidality among participants with (n = 105) and without (n = 85) self-reported romantic relationship stress.

RESULTS

Over half (55%) of the sample reported current romantic relationship stress. Compared to participants without current romantic relationship stress, results indicated that individuals reporting current romantic relationship stress were more hopeless (AOR = 1.07 (95% CI: 1.01-1.12), p = 0.020), more likely to endorse multiple suicide attempts (AOR = 1.96 (95% CI: 1.01-3.79), p = 0.046), had higher overall suicide risk (AOR = 2.49, (95% CI: 1.03-6.06), p = 0.044), and were more likely to report that the reason for their suicidality was at least in part to get a reaction from others.

CONCLUSIONS

Findings suggest romantic relationship stress is associated with greater suicide risk, and have clinical implications for suicide prevention and intervention. Future research may examine mechanisms and pathways between romantic relationship stress, suicidality, and prevention and intervention strategies.

Non-Suicidal Self-Injury Elevates Suicide Risk among United States Military Personnel with Lifetime Attempted Suicide

Military psychiatric inpatients with and without a lifetime history of non-suicidal self-injury (NSSI), combined with a history of at least one suicide attempt, were compared on suicide ideation severity, number of suicide attempts, and Interpersonal-Psychological Theory of Suicide variables. Data were derived from baseline assessments performed in a psychotherapy randomized controlled trial. Lifetime history of NSSI and lifetime number of suicide attempts were assessed using the Columbia Suicide Severity Rating Scale (C-SSRS; Posner et al., 2011 ). Individuals with versus without a combined lifetime history of attempted suicide and NSSI showed significant elevations on thwarted belongingness and acquired capability for suicide. No significant between-group differences were found on perceived burdensomeness, frequency, duration, and controllability of suicide ideation, or number of lifetime suicide attempts. A history of NSSI, above and beyond attempted suicide, appears to increase service members' social alienation and acquired capability for suicide.

Outpatient Mental Health Treatment Utilization and Military Career Impact in the United States Marine Corps

Service members (SM) are at increased risk of psychiatric conditions, including suicide, yet research indicates SMs believe seeking mental health treatment may negatively impact their military careers, despite a paucity of research examining actual career impacts. This study examined the link between seeking outpatient mental health (MH) treatment and military career impacts within the United States Marine Corps. In Phase 1, a retrospective medical record review of outpatient MH treatment-seeking Marines (N = 38) was conducted. In Phase 2, a sample of outpatient MH treatment-seeking Marines (N = 40) was matched to a non-treatment-seeking sample of Marines (N = 138) to compare career-progression. In Phase 1, there were no significant links between demographic, military, and clinical characteristics and referral source or receipt of career-affecting treatment recommendations. In Phase 2, MH treatment-seeking Marines in outpatient settings were more likely than matched controls to be separated from the military (95.0% versus 63.0%, p = 0.002), but no more likely to experience involuntary separation. MH treatment-seeking Marines were more likely to have documented legal action (45.0% versus 23.9%, p = 0.008) and had a shorter time of military service following the index MH encounter than matched controls (p < 0.001). Clinical, anti-stigma, and suicide prevention policy implications are discussed.

Perspectives of Suicide Bereaved Individuals on Military Suicide Decedents' Life Stressors and Male Gender Role Stress

The objective of this study was to pilot the newly developed Male Gender Role Stressor Inventory (MGRSI) in military suicide bereaved (i.e., decedents' family members and significant others) and to determine the association between Male Gender Role Stress (MGRS) and other life stressors observed by survivors. Sixty-five survivors attending a national survivor seminar completed original surveys, reporting demographic information about themselves and the decedent and observations of the decedent's life stressors during the 1-month and 1-year periods prior to death. The MGRSI obtained acceptable internal reliability (α = .76) and indicated that factors including honor, strength, and achievement were the most commonly reported sources of MGRS. Correlational and regression analyses revealed that legal- and trauma-related stressors 1 month prior to suicide were significantly associated with MGRSI score. MGRS may contribute to a better understanding of military male suicide. The Department of Defense and the Veterans Administration may benefit from suicide prevention programs targeting rigid male gender role beliefs and male-specific stressors.

How Parental Reactions Change in Response to Adolescent Suicide Attempt

This study examined parental reactions to adolescents' suicide attempts and the association of reactions with future suicidal self-directed violence. Participants were 81 mothers and 49 fathers of 85 psychiatric inpatient adolescents. Maternal hostility and paternal anger and arguing predicted future suicide attempts. From pre- to post-attempt, mothers reported feeling increased sadness, caring, anxiety, guilt, fear, and being overwhelmed; fathers reported increased sadness, anxiety, and fear. Findings have clinical implications; improving parent-child relationships post-suicide attempt may serve as a protective factor for suicide.

Glucocorticoid resistance in T-lineage acute lymphoblastic leukaemia is associated with a proliferative metabolism

Glucocorticoids (GCs) are among the most important drugs for acute lymphoblastic leukaemia (ALL), yet despite their clinical importance, the exact mechanisms involved in GC cytotoxicity and the development of resistance remain uncertain. We examined the baseline profile of a panel of T-ALL cell lines to determine factors that contribute to GC resistance without prior drug selection. Transcriptional profiling indicated GC resistance in T-ALL is associated with a proliferative phenotype involving upregulation of glycolysis, oxidative phosphorylation, cholesterol biosynthesis and glutamate metabolism, increased growth rates and activation of PI3K/AKT/mTOR and MYC signalling pathways. Importantly, the presence of these transcriptional signatures in primary ALL specimens significantly predicted patient outcome. We conclude that in lymphocytes the activation of bioenergetic pathways required for proliferation may suppress the apoptotic potential and offset the metabolic crisis initiated by GC signalling. It is likely that the link between GC resistance and proliferation in T-ALL has not been fully appreciated to date because such effects would be masked in the context of current multiagent therapies. The data also provide the first evidence that altered expression of wild-type MLL may contribute to GC-resistant phenotypes. Our findings warrant the continued development of selective metabolic inhibitors for the treatment of ALL.

In vitro cytotoxicity of nelarabine, clofarabine and flavopiridol in paediatric acute lymphoblastic leukaemia

The in vitro efficacies of three new drugs--clofarabine (CLOF), nelarabine (NEL) and flavopiridol (FP) - were assessed in a panel of acute lymphoblastic leukaemia (ALL) cell lines. The 50% inhibitory concentration (IC50) for CLOF across all lines was 188-fold lower than that of NEL. B-lineage, but not T-lineage lines, were >7-fold more sensitive to CLOF than cytosine arabinoside (ARAC). NEL IC50 was 25-fold and 113-fold higher than ARAC in T- and B-lineage, respectively. T-ALL cells were eightfold more sensitive to NEL than B-lineage but there was considerable overlap. FP was more potent in vitro than glucocorticoids and thiopurines and at doses that recent phase I experience predicts will translate into clinical efficacy. Potential cross-resistance of CLOF, NEL and FP was observed with many front-line ALL therapeutics but not methotrexate or thiopurines. Methotrexate sensitivity was inversely related to that of NEL and FP. Whilst NEL was particularly effective in T-ALL, a subset of patients with B-lineage ALL might also be sensitive. CLOF appeared to be marginally more effective in B-lineage than T-ALL and has a distinct resistance profile that may prove useful in combination with other compounds. FP should be widely effective in ALL if sufficient plasma levels can be achieved clinically.

Identification of novel molecular prognostic markers for paediatric T-cell acute lymphoblastic leukaemia

In the last four decades the survival of patients with newly diagnosed childhood T-cell acute lymphoblastic leukaemia (T-ALL) has improved dramatically. In sharp contrast, relapsed T-ALL continues to confer a dismal prognosis. We sought to determine if gene expression profiling could uncover a signature of outcome for children with T-ALL. Using 12 patient specimens obtained before therapy started, we examined the gene expression profile by oligonucleotide microarrays. We identified three genes, CFLAR, NOTCH2 and BTG3, whose expression at the time of diagnosis accurately distinguished the patients according to disease outcome. These genes are involved in the regulation of apoptosis and cellular proliferation. The prognostic value of the three predictive genes was assessed in an independent cohort of 25 paediatric T-ALL patients using quantitative real-time reverse transcription polymerase chain reaction. Patients assigned to the adverse outcome group had a significantly higher cumulative incidence of relapse compared with patients assigned to the favourable outcome group (46% vs. 8%, P = 0.029). Five-year overall survival was also significantly worse in the patients assigned to the adverse outcome group (P = 0.0039). The independent influence of the 3-gene predictor was confirmed by multivariate analysis. Our study provides proof of principle that genome-wide expression profiling can detect novel molecular prognostic markers in paediatric T-ALL.

Authenticity and drug resistance in a panel of acute lymphoblastic leukaemia cell lines

Cell lines are important models for drug resistance in acute lymphoblastic leukaemia (ALL), but are often criticised as being unrepresentative of primary disease. There are also doubts regarding the authenticity of many lines. We have characterised a panel of ALL cell lines for growth and drug resistance and compared data with that published for primary patient specimens. In contrast to the convention that cell lines are highly proliferative, those established in our laboratory grow at rates similar to estimates of leukaemic cells in vivo (doubling time 53–442 h). Authenticity was confirmed by genetic fingerprinting, which also demonstrated the potential stability of long-term cultures. In vitro glucocorticoid resistance correlated well with that measured ex vivo, but all lines were significantly more sensitive to vincristine than primary specimens. Sensitivity to methotrexate was inversely correlated to that of glucocorticoids and L-asparaginase, indicating possible reciprocity in resistance mechanisms. A cell line identified as highly methotrexate resistant (IC₅₀ >8000-fold higher than other lines) was derived from a patient receiving escalating doses of the drug, indicating in vivo selection of resistance as a cause of relapse. Many of these lines are suitable as models to study naturally occurring resistance phenotypes in paediatric ALL.