title: Impulsivity, aggression and brain structure in high and low lethality suicide attempters with borderline personality disorder.
abstract: Impulsivity and aggressiveness are trait dispositions associated with the vulnerability to suicidal behavior across diagnoses. They are associated with structural and functional abnormalities in brain networks involved in regulation of mood, impulse and behavior. They are also core characteristics of borderline personality disorder (BPD), a disorder defined, in part, by recurrent suicidal behavior. We assessed the relationships between personality traits, brain structure and lethality of suicide attempts in 51 BPD attempters using multiple regression analyses on structural MRI data. BPD was diagnosed by the Diagnostic Interview for Borderline Patients-revised, impulsivity by the Barratt Impulsiveness Scale (BIS), aggression by the Brown-Goodwin Lifetime History of Aggression (LHA), and high lethality by a score of 4 or more on the Lethality Rating Scale (LRS). Sixteen High Lethality attempters were compared to 35 Low Lethality attempters, with no significant differences noted in gender, co-morbidity, childhood abuse, BIS or LHA scores. Degree of medical lethality (LRS) was negatively related to gray matter volumes across multiple fronto-temporal-limbic regions. Effects of impulsivity and aggression on gray matter volumes discriminated High from Low Lethality attempters and differed markedly within lethality groups. Lethality of suicide attempts in BPD may be related to the mediation of these personality traits by specific neural networks.
authors.affiliation: Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh, 3811 O׳Hara Street, Pittsburgh, PA 15213, USA. Electronic address: soloffph@upmc.edu.
authors.forename: Paul
authors.initials: P
authors.lastname: Soloff
authors.affiliation: Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.
authors.forename: Richard
authors.initials: R
authors.lastname: White
authors.affiliation: Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, MI, USA.
authors.forename: Vaibhav A
authors.initials: VA
authors.lastname: Diwadkar
mesh_terms: D000328:Adult; D000374:Aggression; D001883:Borderline Personality Disorder / Q000473:pathology* / Q000523:psychology*; D001921:Brain / Q000473:pathology*; D015897:Comorbidity; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D008032:Limbic System / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019966:Substance-Related Disorders / Q000473:pathology / Q000523:psychology; D013405:Suicide; D013406:Suicide, Attempted; D013702:Temporal Lobe / Q000473:pathology
keywords: Borderline personality disorder; Impulsive–aggression; Magnetic resonance imaging; Suicidal behavior