Mats B. Humble

Social phobia: the clinical efficacy and tolerability of the monoamine oxidase ‐A and serotonin uptake inhibitor brofaromine. A double‐blind placebo‐controlled study

Seventy‐seven patients with a primary diagnosis of social phobia (DSM‐III‐R) were randomized to treatment with the reversible and selective monoamine oxidase type A inhibitor brofaromine (n= 37) or placebo (n= 40) for 12 weeks in a double‐blind trial. A fixed dose of 150 mg/day or a matching placebo was given after a 2‐week dose titration phase. Patients with additional diagnoses of simple phobia, generalized anxiety disorder, dysthymia or major depressive disorder currently in remission were accepted. Patients with other Axis I mental disorders were excluded. In the brofaromine group, 78% of the patients scored much or very much improved on the Clinical Global Impression scale compared with 23% in the placebo group. The anxiety and avoidance scores on the Liebowitz Social Anxiety Scale (LSAS) were significantly reduced in favor of brofaromine. The clinical effects were not significantly correlated with the plasma concentration of brofaromine. After 12 weeks the brofaromine group scored significantly Jower than the placebo group on a core depression part of the Montgomery‐Åsberg Depressid Rating Scale. After 12 weeks of treatment the brofaromine group had significantly higher total scores on the LSAS than an age‐ and gender‐matched group of healthy controls. The brofaromine group improved further during 9‐month follow‐up treatment period, whereas 60% of the placebo responders who continued long‐term treatment relapsed. The most common side effects in the brofaromine group were sleep disturbances, dry mouth and nausea.

Low prevalence of smoking among patients with obsessive-compulsive disorder.

Tobacco smoking is common among psychiatric patients, especially among those with schizophrenia, where the prevalence is extremely high, 74% to 88%, compared with 45% to 70% in patients with other psychiatric diagnoses. Patients with anxiety disorders are less well investigated in this respect, particularly obsessive-compulsive disorder (OCD) patients. Eighty-three psychiatric outpatients with OCD and 110 members of the Swedish OCD Association responded to questions concerning their smoking habits. Among OCD patients, 14% were current smokers (compared with 25% in the general population of Sweden), 72% had never smoked, and 11 previous smokers had stopped, mostly without any difficulties. Since a decreased smoking rate among OCD subjects was confirmed, the smoking prevalences in schizophrenia and OCD, respectively, seem to represent either end of a continuum, and OCD may also differ significantly from other anxiety disorders in this respect. Possible implications of this finding for the purported frontal lobe dysregulation in OCD are discussed.

Autism spectrum disorder and low vitamin D at birth: a sibling control study

BackgroundInsufficient vitamin D activity has attracted increasing interest as a possible underlying risk factor in disorders of the central nervous system, including autism.MethodsIn this study, 25-hydroxyvitamin D (25(OH)D) was analysed in 58 Sweden-born sibling pairs, in which one child had autism spectrum disorder (ASD) and the other did not. The study group consisted of two representative samples; 47 Gothenburg sibling pairs with mixed ethnicities and 11 Stockholm sibling pairs with Somali background. 25(OH)D levels were analysed in the stored dried blood spots taken in the neonatal period for metabolic screening.ResultsThe collapsed group of children with ASD had significantly lower vitamin D levels (M = 24.0 nM, SD = 19.6) as compared with their siblings (M = 31.9 nM, SD = 27.7), according to a paired samples t-test (P = 0.013). The difference was - most likely - not only accounted for by a difference in season of birth between ASD and non-ASD siblings since the mean 25(OH)D levels differed with similar effect size between the sibling pairs born during winter and summer, respectively. All children with African/Middle East background, both the children with ASD and their non-ASD siblings, had vitamin D deficiency.ConclusionsThe findings suggest that low prenatal vitamin D may act as a risk factor for ASD, however, there is a need for replication with larger samples. Future research should study whether or not adequate supplementation of vitamin D to pregnant women might lower the risk for ASD in the offspring.

Aetiology and mechanisms of anxiety disorders

Theories on the aetiology of pathological anxiety abound. A critical review is given of the most influential apporaches (e.g. psychonalytical, “somatogenic” behavioural, psychophysiological and “biological theories), with emphasis on panic and agoraphobic disorders. Eviudence is presented from epidemiological and genetic research and from observations on the course of illness. A surprisingly constant prevalence of anxiety syndormes, and a familial distribution suggesting a pivotal importance of genetic factors, speak in favour of a biological model. The course of illness, however, points to the importance of environmental influences as triggering factors, and to congnitive and behavioural mechanisms for the perpetuation of the symptoms. Treatment responses hitherto documented support the biological and behagioural concepts, but the cognitive and psychophysiological theories are also supported to some extent. An attempt is made to combine these findings with biochemical and pharmacological findings in an intergrated model of panic and agoraphobia. This model takes the form of a vicious circle, and is compatible with biological and neuropharmacological as well as evolutionary and psychological concepts.

Noradrenaline and serotonin reuptake inhibition as clinical principles:a review of antidepressant efficacy

Imipramine and other subsequently developed antidepressants produce numerous neurochemical effects, some of which presumably represent active antidepressant principles. Numerous studies have compared the efficacy of selective serotonin reuptake inhibitors (SSRIs) with noradrenaline reuptake inhibitors (NRIs) with variable selectivity, such as desipramine, lofepramine, viloxazine, maprotiline or oxaprotiline. Most studies have failed to show differences in response rates or subtype responsivity. However, in some studies NRIs appear to be superior to SSRIs as regards retardation and, conversely, SSRIs appear superior as regards anxiety symptoms. Furthermore, NRIs may be more effective than SSRIs in severe depression. The novel selective NRI reboxetine has been shown to be at least as effective as imipramine, desipramine and fluoxetine in the treatment of major depression. Moreover, reboxetine may also improve social functioning significantly more than fluoxetine providing a better quality of the remission.

Poor performance in physical education - a risk factor for bully victimization. A case-control study.

Aim:  Poor social skills are a risk factor for becoming bullied, which could explain why this frequently occurs to children with autism spectrum disorders (ASD) and attention‐deficit hyperactivity disorder (ADHD). Poor social skills tend to coexist with clumsiness. According to a pilot study, poor performance in physical education (PE) was correlated with bully victimization.

Childhood clumsiness and peer victimization: a case–control study of psychiatric patients

BackgroundPoor motor and social skills as well as peer victimization are commonly reported in both ADHD and autism spectrum disorder. Positive relationships between poor motor and poor social skills, and between poor social skills and peer victimization, are well documented, but the relationship between poor motor skills and peer victimization has not been studied in psychiatric populations.Method277 patients (133 males, 144 females), mean age 31 years, investigated for ADHD or autism spectrum disorder in adulthood and with normal intelligence, were interviewed about childhood peer victimization and examined for gross motor skills. The parents completed a comprehensive questionnaire on childhood problems, the Five to Fifteen. The Five to Fifteen is a validated questionnaire with 181 statements that covers various symptoms in childhood across eight different domains, one of them targeting motor skills. Regression models were used to evaluate the relationship between motor skills and the risk and duration of peer victimization, adjusted for sex and diagnosis.ResultsVictims were described as more clumsy in childhood than their non-victimized counterparts. A significant independent association was found between reportedly poor childhood gross motor skills and peer victimization (adjusted odds ratio: 2.97 [95% confidence interval: 1.46-6.07], n = 235, p = 0.003). In adulthood, the victimized group performed worse on vertical jumps, a gross motor task, and were lonelier. Other factors that were expected to be associated with peer victimization were not found in this highly selected group.ConclusionPoor gross motor skills constitute a strong and independent risk factor for peer victimization in childhood, regardless of sex, childhood psychiatric care and diagnosis.

Reactivity of serotonin in whole blood: relationship with drug response in obsessive-compulsive disorder

BACKGROUND Obsessive-compulsive disorder responds almost only to potent serotonin reuptake inhibitors. Previous studies have suggested a relation between serotonergic function and clinical outcome in serotonin reuptake inhibitor treatment of obsessive-compulsive disorder. METHODS In a randomized, double-blind trial, comparing clomipramine, paroxetine, and a placebo in obsessive-compulsive disorder, serotonin levels in whole blood (WB-5-HT) were measured at baseline, after 1 week, and after 4 weeks of treatment and related to clinical outcome in 36 patients. RESULTS In patients treated with serotonin reuptake inhibitors there was a pronounced decrease of WB-5-HT, variable after 1 week and uniformly maximal after 4 weeks. The decrease of WB-5-HT after 1 week of serotonin reuptake inhibitor treatment correlated negatively with clinical outcome after 12 weeks (r = -.61, p =.0006); hence, patients with slower WB-5-HT reactivity eventually responded better to treatment. Baseline WB-5-HT, but not WB-5-HT reactivity, was related to season. Depression, autistic traits, and previous serotonin reuptake inhibitor treatment predicted nonresponse. CONCLUSIONS A fast decrease of WB-5-HT was associated with poor clinical outcome. This may be related to faster serotonin efflux from platelets, which has previously been linked to autism. Further studies are necessary to identify the underlying mechanism and discern whether serotonin reuptake inhibitor-induced WB-5-HT decrease is clinically useful.

Poor motor skills: a risk marker for bully victimization

Children who are clumsy are often bullied. Nevertheless, motor skills have been overlooked in research on bullying victimization. A total of 2,730 Swedish adults (83% females) responded to retrospective questions on bullying, their talents in physical education (i.e., coordination and balls skills) and school academics. Poor talents were used as indicators of poor gross motor skills and poor academic skills. A subset of participants also provided information on educational level in adulthood, childhood obesity, belonging to an ethic minority in school and socioeconomic status relative to schoolmates. A total of 29.4% of adults reported being bullied in school, and 18.4% reported having below average gross motor skills. Of those with below average motor skills, 48.6% were bullied in school. Below average motor skills in childhood were associated with an increased risk (OR 3.01 [95% CI: 1.97–4.60]) of being bullied, even after adjusting for the influence of lower socioeconomic status, poor academic performance, being overweight, and being a bully. Higher odds for bully victimization were also associated with lower socioeconomic status (OR 2.29 [95% CI: 1.45–3.63]), being overweight (OR 1.71 [95% CI: 1.18–2.47]) and being a bully (OR 2.18 [95% CI: 1.53–3.11]). The findings indicate that poor gross motor skills constitute a robust risk-marker for vulnerability for bully victimization. Aggr. Behav. 39:453–461, 2013.

The Brief Obsessive–Compulsive Scale (BOCS): A self-report scale for OCD and obsessive–compulsive related disorders

Abstract Background: The Brief Obsessive Compulsive Scale (BOCS), derived from the Yale–Brown Obsessive–Compulsive Scale (Y-BOCS) and the childrens version (CY-BOCS), is a short self-report tool used to aid in the assessment of obsessive–compulsive symptoms and diagnosis of obsessive–compulsive disorder (OCD). It is widely used throughout child, adolescent and adult psychiatry settings in Sweden but has not been validated up to date. Aim: The aim of the current study was to examine the psychometric properties of the BOCS amongst a psychiatric outpatient population. Method: The BOCS consists of a 15-item Symptom Checklist including three items (hoarding, dysmorphophobia and self-harm) related to the DSM-5 category “Obsessive–compulsive related disorders”, accompanied by a single six-item Severity Scale for obsessions and compulsions combined. It encompasses the revisions made in the Y-BOCS-II severity scale by including obsessive–compulsive free intervals, extent of avoidance and excluding the resistance item. 402 adult psychiatric outpatients with OCD, attention-deficit/hyperactivity disorder, autism spectrum disorder and other psychiatric disorders completed the BOCS. Results: Principal component factor analysis produced five subscales titled “Symmetry”, “Forbidden thoughts”, “Contamination”, “Magical thoughts” and “Dysmorphic thoughts”. The OCD group scored higher than the other diagnostic groups in all subscales (P < 0.001). Sensitivities, specificities and internal consistency for both the Symptom Checklist and the Severity Scale emerged high (Symptom Checklist: sensitivity = 85%, specificities = 62–70% Cronbachs α = 0.81; Severity Scale: sensitivity = 72%, specificities = 75–84%, Cronbachs α = 0.94). Conclusions: The BOCS has the ability to discriminate OCD from other non-OCD related psychiatric disorders. The current study provides strong support for the utility of the BOCS in the assessment of obsessive–compulsive symptoms in clinical psychiatry.