Developments in pediatric psychopharmacology: focus on stimulants, antidepressants, and antipsychotics

Adherence Rates and Barriers to Second-Generation Antipsychotic Medication Use in Youth with Bipolar Spectrum Disorders Who Have Overweight/Obesity

Objective: Youth with bipolar spectrum disorders (BSD) are frequently prescribed second-generation antipsychotics (SGAs). Nonadherence to treatment often results in increased mood symptoms and diminished quality of life. We examined SGA adherence rates and adherence barriers among youth who have overweight/obesity and are diagnosed with BSD enrolled in a multisite pragmatic clinical trial. Methods: SGA adherence and adherence barriers at baseline via patient- and caregiver report was assessed. Adherence was defined as taking ≥70% of prescribed SGA doses in the past week. The weighted Kappa statistic was used to measure child-caregiver agreement about adherence rates, barriers, and caregiver assistance. Regression analyses were used to examine associations of caregiver assistance, age, sex, race, insurance status, dosing frequency, and number of concomitant medications with adherence. Barriers to adherence were analyzed separately for youth and their caregivers, using logistic regression to assess associations between informant-reported barriers and informant-reported adherence. Results: Participants included 1485 patients and/or caregivers. At baseline, 88.6% of patients self-reported as adherent; 92.0% of caregivers reported their child was adherent. Concordance between patients and caregivers was moderate (k = 0.42). Approximately, 50% of the sample reported no adherence barriers. Frequently endorsed barriers included forgetting, side effects, being embarrassed to take medications, and preferring to do something else. Concordance between informants regarding adherence barriers was weak (k = 0.05-0.36). Patients and caregivers who did not endorse adherence barriers reported higher adherence than those who endorsed barriers. Male sex and having once daily dosing of medications were associated with lower adherence. Discussion: One-week patient- and caregiver-reported adherence was high in this sample. Half of the sample reported adherence barriers. Most commonly endorsed barriers were forgetting, side effects, being embarrassed, and preferring to do something else. Caregivers and patients have unique perspectives regarding adherence barriers. Understanding and addressing treatment barriers in clinical practice may facilitate adherence.

The transition from adolescence to adulthood in patients with schizophrenia: Challenges, opportunities and recommendations

Schizophrenia is a severely debilitating neurodevelopmental disorder that requires continuous multidisciplinary treatment. Early onset schizophrenia (EOS, onset before 18) is associated with poorer outcomes than the adult-onset type. The transition from adolescent to adult mental healthcare services (AMHS) poses various challenges for maintaining continuity of care. The heterogeneous availability of specialized mental health services and resources for people with schizophrenia across Europe and the inadequacy of training programs in creating a shared culture and knowledge base between child and adult mental health professionals are major challenges at the policy level. More flexible and individualized transition timing is also needed. While changes in the relationship between patients, caregivers and mental health professionals at a time when young people should acquire full responsibility for their own care are challenges common to all mental health disorders, these are particularly relevant to the care of schizophrenia because of the severe associated disability. This Expert Opinion Paper examines the main aspects of transitioning of care in schizophrenia with the aim of identifying the challenges and the potential approaches that could enhance continuity of care.

Long-Term Safety and Efficacy of Blonanserin Oral Tablet in Adolescents with Schizophrenia: A 52-Week, Multicenter, Open-Label Extension Study

Objectives: To evaluate the long-term efficacy and safety/tolerability of oral blonanserin in adolescents with schizophrenia (Study registration number: JapicCTI-111725). Methods: This 52-week, multicenter, open-label extension study enrolled adolescent patients with schizophrenia who opted to enter in this study after the completion of the preceding placebo-controlled study. Blonanserin tablet was orally administered twice daily, after morning and evening meals, for 52 weeks using dose-titration method within a range between 4 and 24 mg/day. The primary end point was the change from baseline to the end of the study in the Positive and Negative Syndrome Scale (PANSS) total score. Safety/tolerability was assessed by the incidence and severity of adverse events. Results: Of 117 patients who completed the preceding placebo-controlled study, 109 entered this extension study and 43 (39.4%) of them discontinued the study treatment. The safety analysis set comprised 106 patients who received the study drug at least once, including 36 and 70 patients treated with placebo (DB-placebo group) and blonanserin tablet (DB-blonanserin group), respectively, in the placebo-controlled study. At the last assessment, the mean change in PANSS total score overall [mean (standard deviation)] was -24.9 (20.76) from the baseline of the placebo-controlled study, which was similar in the DB-placebo and DB-blonanserin groups. The overall incidence of adverse events was 90.6%, and most of them were mild or moderate in severity, with similar incidence of extrapyramidal symptoms (38.7%) to that in adults receiving long-term blonanserin oral tablet treatment and minimal change in weight and metabolic parameters. Conclusions: This long-term extension study showed that 52 weeks of oral blonanserin treatment improved or stabilized psychiatric symptoms in patients with adolescent schizophrenia. There were no major issues with the safety or tolerability of blonanserin administration in this study. Considering relatively less adverse effects on weight increase and metabolic parameters, blonanserin is expected to be a safe/tolerable treatment option for adolescent schizophrenia that can be used seamlessly from adolescence to adulthood.

The Use of Antidepressants, Antipsychotics, and Stimulants in Youth Residential Care

Objectives: To assess the use of three commonly prescribed psychotropic medications in youth placed in residential care (RC). Methods: Participants were youth aged 0-20 years placed in RC institutions at least once during 2016. Data on filled prescriptions were taken from the Norwegian Prescription Database to compare the use of antidepressants, antipsychotics, and stimulants in RC with the age- and gender-adjusted general child population (GenPop) and how this co-varied with reasons for RC placement, age, and gender. Results: One thousand eight hundred fifty-six children and adolescents were identified in RC, with mean age 14 (range 0-20 years), 46% girls, 81% ≥ 13 years. Among those, 423 or 23% used any of the 3 psychotropics, which was significantly more than the 3.7% in GenPop. The prevalence ratios RC/GenPop were 6.6 for antidepressants, 17.9 for antipsychotics, and 4.4 for stimulants. The median number of days per year for the dispensed defined daily doses varied from 8.3 to 244.0 for the different antipsychotics, indicating short time use for most of the people. Polypharmacy was not frequent in RC, as only 26% used ≥2 classes of medication, but still significantly more frequent than the 10% in GenPop. Youth placed in RC for serious behavior problems had significantly higher use of stimulants than those with other placement reasons. Psychotropics were not used below age 6 years, and although the use of antidepressants and antipsychotics overall increased with age, stimulants were mostly used by 6-16-year olds. The girl/boy ratio for any psychotropic medication use in RC was 1.4 (95% confidence interval [95% CI]: 1.1-1.6), significantly higher than the corresponding ratio in GenPop: 1.0 (95% CI: 0.9-1.0). Conclusion: The present findings do not necessarily suggest an overtreatment with medication in RC. However, the frequent short-term use of antipsychotics, presumably for non-psychotic symptoms, is a concern, as it may reflect that the youth are not provided with the recommended first-line psychological treatments.

Trends in Psychotropic Medication Prescriptions in Urban China From 2013 to 2017: National Population-Based Study

Purpose: Psychotropic medications are commonly used for treating mental disorders; however, there is currently no study on how commonly they are used in China. This study reported the trends in psychotropic medications prescriptions in urban China. Methods: A national population-based study was conducted using the China Health Insurance Research Association database to estimate the period prescription prevalence of 11 major classes of psychotropic medications annually during 2013-2017. The World Health Organization Anatomical Therapeutic Chemical (ATC) classification codes were used to identify psychotropic medications. Results: The prescription prevalence of any psychotropic medication increased from 8.110% (8.106-8.114%) in 2013 to 11.362% (11.357-11.366%) in 2017. The prescription prevalence of six classes increased significantly during 2013-2017, including sedatives-hypnotics (from 3.177 to 5.388%), anxiolytics (from 1.436 to 2.200%), antiepileptic drugs (from 1.416 to 2.140%), antipsychotics (from 0.809 to 1.156%), antidepressants (from 0.891 to 1.045%), and psycholeptic polypills (from 0.682 to 0.866%). The prescription prevalence of antidementia drugs increased from 0.069 to 0.122%, and mood stabilizers increased from 0.029 to 0.037%, although not statistically significant. The prescription prevalence of nootropic drugs, attention deficit hyperactivity disorder (ADHD) medications and drugs used in the treatment of addictive disorders was largely stable. Psychotropic medication prescription increased with age for all classes except for ADHD medications and mood stabilizers. Conclusion: Increasing trends in prescription prevalence were observed for most classes of psychotropic medications in urban China, although the prevalence was still lower than that in most developed countries. Further research is warranted to explore the potential treatment gap between China and most developed countries.

The Importance of Second-Generation Antipsychotic-Related Weight Gain and Adherence Barriers in Youth with Bipolar Disorders: Patient, Parent, and Provider Perspectives

Objectives: The objective of this research was to understand physician, patient, and parent perspectives on barriers to second-generation antipsychotic (SGA) medication adherence in youth with bipolar spectrum disorders, and attitudes toward treatment of SGA-related weight gain. Methods: Patients diagnosed with bipolar disorder before age 18, parents of children diagnosed before 18, and clinicians with experience prescribing SGAs for these patients completed surveys regarding SGA-related side effects, adherence barriers, and acceptability of weight management strategies. Results: Patients (n = 225), parents (n = 128), and clinicians (n = 54) reported weight gain as the most concerning SGA-related side effect (45.6%, 38.9%, and 70.4%, respectively). Weight gain was also the top adherence barrier for patients (35.9%), but was ranked fourth (41.8%) by parents. Patients (61.5%) were more likely "definitely" willing to co-initiate another medication to manage weight gain upon SGA initiation than parents (20.1%) or clinicians (1.9%). Conversely, parents (54.9%) and clinicians (84.9%) were "definitely" willing to accept/prescribe a second medication aiming to reverse weight gain of ≥10 lbs., and patients (61.1%) were willing to add another medication to reverse any weight gain. Conclusion: SGA-related weight gain impairs medication adherence in young patients with bipolar disorder. Many young patients would start pharmacologic treatment to mitigate SGA-related weight gain at treatment initiation, parents and clinicians are more hesitant. This research informs patient-centered perspectives on SGA adherence barriers and strategies to minimize potential side effects, which may improve adherence in this vulnerable patient population.

Safety of 80 antidepressants, antipsychotics, anti-attention-deficit/hyperactivity medications and mood stabilizers in children and adolescents with psychiatric disorders: a large scale systematic meta-review of 78 adverse effects

Mental disorders frequently begin in childhood or adolescence. Psychotropic medications have various indications for the treatment of mental dis-orders in this age group and are used not infrequently off-label. However, the adverse effects of these medications require special attention during developmentally sensitive periods of life. For this meta-review, we systematically searched network meta-analyses and meta-analyses of randomized controlled trials (RCTs), individual RCTs, and cohort studies reporting on 78 a priori selected adverse events across 19 categories of 80 psychotropic medications - including antidepressants, antipsychotics, anti-attention-deficit/hyperactivity disorder (ADHD) medications and mood stabilizers - in children and adolescents with mental disorders. We included data from nine network meta-analyses, 39 meta-analyses, 90 individual RCTs, and eight cohort studies, including 337,686 children and adolescents. Data on ≥20% of the 78 adverse events were available for six antidepressants (sertraline, escitalopram, paroxetine, fluoxetine, venlafaxine and vilazodone), eight antipsychotics (risperidone, quetiapine, aripiprazole, lurasidone, paliperidone, ziprasidone, olanzapine and asenapine), three anti-ADHD medications (methylphenidate, atomoxetine and guanfacine), and two mood stabilizers (valproate and lithium). Among these medications with data on ≥20% of the 78 adverse events, a safer profile emerged for escitalopram and fluoxetine among antidepressants, lurasidone for antipsychotics, methylphenidate among anti-ADHD medications, and lithium among mood stabilizers. The available literature raised most concerns about the safety of venlafaxine, olanzapine, atomoxetine, guanfacine and valproate. Nausea/vomiting and discontinuation due to adverse event were most frequently associated with antidepressants; sedation, extrapyramidal side effects, and weight gain with antipsychotics; anorexia and insomnia with anti-ADHD medications; sedation and weight gain with mood stabilizers. The results of this comprehensive and updated quantitative systematic meta-review of top-tier evidence regarding the safety of antidepressants, antipsychotics, anti-ADHD medications and mood stabilizers in children and adolescents can inform clinical practice, research and treatment guidelines.

Suicidality in Childhood and Adolescence

BACKGROUND

The suicide of minors in Germany is rare in absolute numbers: there were only 212 suicides among persons aged 10 to 20 in Germany in 2017. Nonetheless, in school surveys, 36.4-39.4% of those surveyed reported suicidal ideation, and 6.5-9% reported suicide attempts. Suicide among children and adolescents is thus a clinically and societally relevant problem.

METHODS

This review is based on pertinent articles retrieved by a selective literature search in the PubMed and PsycInfo databases (April 2019) employing the search terms "suicidality," "suicidal*," and "suicide," and on further information from several textbooks (1991-2017).

RESULTS

In children and adolescents with a mental illness, the risk of suicide is higher by a factor of 3 to 12. Mobbing experiences increase the suicide risk as well (odds ratio [OR] = 2.21, p <0.05). Non-suicidal self-injurious behavior (NSSB) is also a risk factor for both suicidal ideation (OR = 2.95) and suicide attempts (hazard ratio [HR] = 2.00). Intoxication with medications is the most common method of attempted suicide (67.7%). Most suicides are preceded by early warning signs. Psychiatric hospitalization is indicated for children and adolescents who are in acute danger of doing harm to themselves. Specific types of treatment, family-centered methods in particular, have been found to lessen the frequency of suicidal ideation and suicide attempts. The administration of antidepressant drugs to children and adolescents is controversial, as there is evidence of increased suicidality (but not mortality) for single medications. Antidepressant drugs should not, however, be withheld for this reason, if indicated. The prerequisite in all cases is close observation.

CONCLUSION

To prevent suicide and improve outcomes, risk factors for suicide must be considered, and the indications for primary and secondary preventive and therapeutic measures must be established. Online therapeutic modalities may become more widely used in the near future, particularly among young patients, who are well versed in the use of the Internet.

Current and Novel Approaches to Mitigate Cardiometabolic Adverse Effects of Second-Generation Antipsychotics

Second-generation antipsychotic-related weight gain and metabolic disturbances are a major public health issue given the widespread prescribing of these medications. The lack of clearly known mechanisms of cardiometabolic adverse effects and the relevance of cardiometabolic health for survival make this an important area for research. While nonpharmacologic and some pharmacologic treatments have shown benefits vs control conditions or placebo, the effects are modest and long-term benefits are less clear. Therefore, new approaches to mitigate second-generation antipsychotic-associated cardiometabolic burden are sorely needed.

Cariprazine Safety in Adolescents and the Elderly: Analyses of Clinical Study Data

Schizophrenia is a life-long mental disorder, affecting young adolescents to elderly patients. Antipsychotic treatment is indicated for all patients with schizophrenia, including the very young and old as well. Developmental issues in the young and decline in organ functioning in the elderly could influence reactions to the drug, and require different dosing regimens. The aim of the present article was to examine the safety profile and dosing requirements in adolescent (13 to less than 18) and elderly (65 and above) patients treated with cariprazine. Data from two clinical studies (one pharmacokinetic pediatric study and one phase III clinical trial) on 49 adolescent patients and 17 elderly patients (65 years of age or above) treated with cariprazine was examined. Safety measures included assessment of adverse events (AEs), clinical laboratory values, physical examinations, extrapyramidal symptom (EPS)-, depression-, and suicidality rating scales. Safety parameters were summarized using descriptive statistics. Results indicate that cariprazine was generally safe and well tolerated. Adverse events in the marginal age populations were comparable to the adult population, except for less insomnia in the young and no reports of akathisia in the elderly. Laboratory parameters, vital sign values and EEG parameters were comparable to previously published data in the adult population. In conclusion, cariprazine in the approved adult dose-range of 1.5-6 mg might be a safe treatment option also in adolescent and elderly patients with schizophrenia. Further studies are need to verify these preliminary findings.

Long-term Effects of Aripiprazole Treatment during Adolescence on Cognitive Function and Dopamine D2 Receptor Expression in Neurodevelopmentally Normal Rats

Objective

This study aimed to investigate the long-term effects of aripiprazole treatment during adolescence on behavior, cognitive function, and dopamine D2 receptor (D2R) expression in adult rats.

Methods

Adolescent male Sprague-Dawley rats were injected intraperitoneally with aripiprazole, risperidone, or vehicle control for 3 weeks (postnatal day 36–56). After a 2-week washout period, locomotion, anxiety, and spatial working memory were evaluated in adulthood (postnatal day 71–84), using an open field test, elevated plus maze, and Y-maze, respectively. In addition, we assessed D2R levels in the dorsolateral and medial prefrontal cortex (PFC), dorsal and ventral striatum, and hippocampus using western blot analysis.

Results

Spontaneous alternation performance (SAP) in the Y-maze, a measure of spatial working memory, differed significantly among the 3 groups (F = 3.89, p = 0.033). A post-hoc test confirmed that SAP in the aripiprazole group was significantly higher than that in the risperidone group (post-hoc test p = 0.013). D2R levels in the medial PFC (F = 8.72, p = 0.001) and hippocampus (F = 13.54, p < 0.001) were different among the 3 groups. D2R levels in the medial PFC and hippocampus were significantly lower in the aripiprazole-treated rats than that in the risperidone-treated rats (post-hoc test p = 0.025 and p < 0.001, respectively) and controls (post-hoc test p < 0.001, all).

Conclusion

This study showed that aripiprazole treatment in adolescence could influence cognitive function and dopaminergic neurotransmission into early adulthood.

Five-Year Outcomes of Behavioral Health Integration in Pediatric Primary Care

BACKGROUND AND OBJECTIVES

In the context of protracted shortages of pediatric behavioral health (BH) specialists, BH integration in pediatric primary care can increase access to BH services. The objectives of this study were to assess the structure and process of pediatric BH integration and outcomes in patient experience (access and quality), cost, and provider satisfaction.

METHODS

In 2013, we launched a multicomponent, transdiagnostic integrated BH model (Behavioral Health Integration Program [BHIP]) in a large pediatric primary care network in Massachusetts. Study participants comprised the first 13 practices to enroll in BHIP (Phase-1). Phase-1 practices are distributed across Greater Boston, with ∼105 primary care practitioners serving ∼114 000 patients. Intervention components comprised in-depth BH education, on-demand psychiatric consultation, operational support for integrated practice transformation, and on-site clinical BH service.

RESULTS

Over 5 years, BHIP was associated with increased practice-level BH integration (P < .001), psychotherapy (P < .001), and medical (P = .04) BH visits and guideline-congruent medication prescriptions for anxiety and depression (P = .05) and attention-deficit/hyperactivity disorder (P = .05). Total ambulatory BH spending increased by 8% in constant dollars over 5 years, mainly attributable to task-shifting from specialty to primary care. Although an initial decline in emergency BH visits from BHIP practices was not sustained, total emergency BH spending decreased by 19%. BHIP providers reported high BH self-efficacy and professional satisfaction from BHIP participation.

CONCLUSIONS

Findings from this study suggest that integrating BH in the pediatric setting can increase access to quality BH services while engendering provider confidence and satisfaction and averting substantial increases in cost.

Fluoxetine exposure in adolescent and adult female mice decreases cocaine and sucrose preference later in life

BACKGROUND

Preclinical evidence from male subjects indicates that exposure to psychotropic medications, during early development, results in long-lasting altered responses to reward-related stimuli. However, it is not known if exposure to the antidepressant fluoxetine, in female subjects specifically, changes sensitivity to natural and drug rewards, later in life.

AIMS

The aim of this work was to investigate if exposure to fluoxetine mediates enduring changes in sensitivity to the rewarding properties of cocaine and sucrose, using female mice as a model system.

METHODS

We exposed C57BL/6 female mice to fluoxetine (250 mg/L in their drinking water) for 15 consecutive days, either during adolescence (postnatal day 35-49) or adulthood (postnatal day 70-84). Twenty-one days later, mice were examined on their behavioral reactivity to cocaine (0, 2.5, 5, 7.5 mg/kg) using the conditioned place preference paradigm, or assessed on the two-bottle sucrose (1%) test.

RESULTS

We found that regardless of age of antidepressant exposure, female mice pre-exposed to fluoxetine displayed reliable conditioning to the cocaine-paired compartment. However, when compared to respective age-matched controls, antidepressant pre-exposure decreased the magnitude of conditioning at the 5 and 7.5 mg/kg cocaine doses. Furthermore, fluoxetine pre-exposure reduced sucrose preference without altering total liquid intake.

CONCLUSIONS

The data suggest that pre-exposure to fluoxetine, during adolescence or adulthood, results in a prolonged decrease in sensitivity to the rewarding properties of both natural and drug rewards in female C57BL/6 mice.

What's in a Name? Moving to Neuroscience-Based Nomenclature in Pediatric Psychopharmacology

Our traditional names for psychotropic medication classes lead to unnecessary confusion. As clinicians, we have grown comfortable with idiosyncratic names of psychotropic medications and have forgotten how unclear and misleading they can be. For example, evidence shows that serotonin reuptake inhibitors help in pediatric anxiety disorders, but a parent with an anxious child might ask, "If you diagnosed my son with separation anxiety, why are you giving him an antidepressant?" Another parent might object to the use of a "stimulant" medication, "My daughter never slows down, the last thing she needs is a stimulant!" Similarly, an "antipsychotic" can be prescribed on-label to youth with mania, bipolar depression, tics, or irritability in autism but families and patients might be confused by or object to the implied label of being "psychotic." Furthermore, patients or family members may not feel comfortable asking clarifying questions and simply do not return for follow up-concluding that the provider does not understand their child.

Assessing the risk of type 2 diabetes mellitus among children and adolescents with psychiatric disorders treated with atypical antipsychotics: a population-based nested case-control study

To examine the associations between atypical antipsychotic (AAP) exposure and the development of type 2 diabetes mellitus (T2DM) in Korean pediatric patients with psychiatric disorders, we conducted a nested case-control study using the claims data of the National Health Insurance system of Korea between 2010 and 2014. A cohort of patients with psychiatric disorders was identified, and enrollment was taken as the date of the first psychiatric diagnosis. Cases involved patients with a diagnosis of T2DM or prescriptions for glucose lowering drugs after enrollment, and the identification of T2DM was defined as the index date. We performed a conditional logistic regression analysis for matched case-control data to assess associations between AAP exposure and T2DM, and adjusted odds ratios (aORs) with 95% confidence intervals (CIs) are presented. From 1,092,019 patients aged 2-19 years, we identified 20,263 cases with T2DM and 80,043 controls, matched by sex, age, enrollment date, and primary psychiatric diagnosis. After adjusting for comorbidities, psychotropic medication history, and the healthcare institution characteristics, the aOR of having T2DM was significantly higher in multi-AAP users compared with non-users (aOR 1.89; 95% CI 1.63-2.20). Particularly high ORs for T2DM were observed in clozapine users compared with non-users (aOR 3.47; 95% CI 1.88-6.41). We observed a linear relationship between the increase in risperidone dose and the increase in the risk of developing T2DM. Our findings suggest a significantly increased risk of developing T2DM in child or adolescent patients with psychiatric disorders exposed to AAPs compared with those not exposed to AAPs.

Long-Acting Injectable Atypical Antipsychotic Use in Adolescents: An Observational Study

OBJECTIVES

Although second generation long-acting injectable antipsychotics (SG-LAIAs) have been approved and are widely used in adults, there is limited evidence for the use of long-acting formulations in children and adolescents. Thus, we systematically describe the off-label use of SG-LAIAs in clinical practice in adolescent inpatients.

METHODS

All individuals admitted to our Children and Adolescent Inpatient Psychiatry Unit receiving treatment with SG-LAIAs between January 2013 and June 2016 were reviewed. A retrospective analysis of medical records was conducted. Clinical diagnoses were established using DSM-5 criteria.

RESULTS

Thirty individuals (53.3% female) out of a total of 1,148 admitted patients (2.6%) were identified. The mean age was 16.3 (SD = 1.3; range: 12.5-17.9).The main diagnoses were psychosis (70%) and disruptive behavior disorders (DBDs) (30%), although comorbidity was frequent (96.6%), especially drug use (55.2%, mostly cannabis). SG-LAIAs used were aripiprazole (40%), risperidone (36.7%), and paliperidone palmitate (23.3%), and the main reasons were a history of low compliance (90%) and/or poor insight (73.3%). A mean improvement of 31.7 (SD = 8.7) between admission and discharge was registered in the Children's Global Assessment Scale (CGAS); no differences were observed between different SG-LAIAs. Although they were generally well tolerated, 23.3% of patients reported mild short-term side effects, which were more frequent with risperidone than with aripiprazole (p = .014).

CONCLUSIONS

Our clinical experience suggests that SG-LAIAs may be a safe treatment option during adolescence in inpatients with psychotic disorders, as well as with DBD. No differences were found in CGAS improvement scores between the three SGA-LAIAs used, although patients on risperidone reported more side effects than those on aripiprazole. Further research is needed so as to evaluate safety and effectiveness of SG-LAIAs in this population.

Nationwide Epidemiologic Study of Atypical Antipsychotic Use Among Pediatric Population with Mental Illness in Korea

Objective: This population-based epidemiologic study aimed to analyze the prevalence and trends of atypical antipsychotic (AAP) use and identify factors associated with AAP prescribing among children and adolescents in Korea. Methods: Using the Health Insurance Review and Assessment Service-Pediatric Patients Sample data between 2010 and 2014, we assessed the prevalence of and secular trends in AAP use; utilization of individual AAP drug based on the type of healthcare services, healthcare institutions, and health security programs; and factors associated with AAP use. Results: The average annual prevalence of AAP use was 417 per 100,000 children and adolescents, which increased by 40% from 2010 to 2014. The major AAP drug of choice has shifted from risperidone (72.70% and 49.29% in 2010 and 2014, respectively) to aripiprazole (11.31% and 34.64% in 2010 and 2014, respectively). Quetiapine was mainly prescribed for inpatients. Therefore, hospitals have 2-3 times higher proportion of quetiapine use than clinics. A prominent difference exists in the prescribing rates and AAP drug of choice based on income level. Patients enrolled in the Medical Aid (MA) program had a higher AAP prescription rate than those enrolled in the National Health Insurance (NHI) program (adjusted odds ratio: 7.78). Moreover, MA recipients were more frequently prescribed with cheaper alternatives, such as risperidone, compared with NHI recipients. Conclusion: AAP has been increasingly used among the pediatric population in Korea. Future studies are needed to identify the causes of this increase and establish evidence on appropriate AAP use. In addition, relevant policies should be developed to ensure that low-income mentally ill children could take advantage of the best available therapy.

Psychotropic medications for highly vulnerable children

INTRODUCTION

At least 20% of children in the U.S. are highly vulnerable because they lack healthcare and protection. Several factors produce vulnerability: trauma, disruptions of parenting, poverty, involvement in the juvenile justice and/or child welfare systems, residence in restrictive settings, and problems related to developmental disabilities. These children receive psychotropic medications at high rates, raising numerous concerns.

AREAS COVERED

The authors begin this review with a description of the population of highly vulnerable children. They then follow this with a review of the effectiveness and side effects of psychotropic medications for their most common diagnoses, using the highest-quality systematic reviews identified by multiple database searches.

EXPERT OPINION

Highly vulnerable children receive numerous psychotropic medications with high rates of polypharmacy, off-label use, and long-term use, typically in the absence of adjunctive psychosocial interventions. The current evidence contravenes these trends. Future studies of psychotropic medications in vulnerable children should include long-term effectiveness trials and polypharmacy in conjunction with evidence-based, family-centered, psychosocial treatments.

Pharmacological treatment of anxiety disorders in children and adolescents: a review for practitioners

Anxiety disorders are common in children and adolescents with reported prevalence rates between 10% and 30%. A combined approach to treatment has been found to be the most effective for optimal outcomes and is typically comprised of psychotherapy (especially exposure-based cognitive behavior therapy), family and patient education, and use of medication if indicated. In children and adolescents who might benefit from use of medications, selective serotonin reuptake inhibitors (SSRIs) are the drugs of choice. The safety and efficacy of medications other than SSRIs in the treatment of children and adolescents with anxiety disorders are not fully established. Most children and adolescents respond well to treatment with long lasting resolution of symptoms, although, recurrence of the same, or development of a different type of anxiety disorder, is not uncommon. In most children and adolescents, anxiety disorders tend to persist into adulthood requiring long-term treatment planning. This paper reviews the pharmacological agents used in the treatment of anxiety disorders in children and adolescents.

Asenapine Treatment in Pediatric Patients with Bipolar I Disorder or Schizophrenia: A Review

Asenapine, administered as a twice-daily (BID) sublingual tablet, is approved in the US as monotherapy for the acute treatment of manic and mixed episodes of bipolar I disorder in children and adolescents aged 10-17 years based on the positive results of one 3-week, double-blind, placebo-controlled study; the recommended dose is 2.5-10 mg BID. Although asenapine has been studied in pediatric patients with schizophrenia, it is not approved for this indication. Asenapine is not approved for pediatric use in bipolar I disorder or schizophrenia in other major markets. To inform clinicians treating psychiatric disorders in pediatric patients, we have summarized the neuropharmacology, pharmacokinetics, clinical trial experience, and clinical use of asenapine in pediatric patients. After rapid absorption through the oral mucosa, the pharmacokinetic profile of asenapine in pediatric patients is similar to that which is observed in adult patients, indicating that the recommended adult dosage does not need to be adjusted for pediatric use. Intake of food and water should be avoided for 10 min after administration. In clinical trials, asenapine was generally safe and well tolerated in pediatric patients with bipolar I disorder and schizophrenia. Serious adverse effects were generally related to worsening of the underlying psychiatric disorder. The most common treatment-emergent adverse events (TEAEs) in both indications were sedation and somnolence. Like some other second-generation antipsychotic agents, weight gain and changes in some metabolic parameters were noted; oral effects (e.g., oral hypoesthesia, dysgeusia, paresthesia) related to sublingual administration did not typically result in treatment discontinuation and were generally transient. Extrapyramidal symptom TEAEs occurred in ≥5% of asenapine-treated patients in the acute and long-term studies in bipolar I disorder and schizophrenia.

Canadian Guidelines for the Pharmacological Treatment of Schizophrenia Spectrum and Other Psychotic Disorders in Children and Youth

OBJECTIVE

Schizophrenia spectrum and other psychotic disorders often have their onset in adolescence. The sequelae of these illnesses can negatively alter the trajectory of emotional, cognitive, and social development in children and youth if left untreated. Early and appropriate interventions can improve outcomes. This article aims to identify best practices in the pharmacotherapy management of children and youth with schizophrenia spectrum disorders.

METHODS

A systematic search was conducted for published guidelines for schizophrenia and schizophrenia spectrum disorders in children and youth (under age 18 years). Recommendations were drawn from the National Institute for Health and Care Excellence guidelines on psychosis and schizophrenia in children and youth (2013 and 2015 updates). Current guidelines were adopted using the ADAPTE process, which includes consensus ratings by a panel of experts.

RESULTS

Recommendations identified covered a range of issues in the pharmacotherapy management of children and youth with schizophrenia spectrum disorders. Further work in this area is warranted as we continue to further understand their presentation in the developing brain.

CONCLUSIONS

Canadian guidelines for the pharmacotherapy management of children and youth with schizophrenia spectrum disorders are essential to assist clinicians in treating this vulnerable population. Ongoing work in this area is recommended.

Acute Antipsychotic Treatment of Children and Adolescents With Schizophrenia-Spectrum Disorders: A Systematic Review and Network Meta-Analysis

OBJECTIVE

To determine the comparative efficacy and safety of antipsychotics for youth with early-onset schizophrenia using network meta-analytic methods combining direct and indirect trial data.

METHOD

The authors systematically searched MEDLINE, the Cochrane Library, and clinicaltrials.gov and selected randomized controlled trials allocating youth with schizophrenia spectrum disorders to a (non-clozapine) antipsychotic versus placebo or another antipsychotic. Major efficacy outcomes were Positive and Negative Syndrome Scale (PANSS) total and positive symptoms. Major safety outcomes were weight, plasma triglyceride levels, extrapyramidal symptoms, akathisia, and all-cause discontinuation. Sixteen additional outcomes were analyzed. A random-effects arm-based network meta-analysis was applied, and consistency was assessed by pairwise meta-analysis. Confidence in PANSS total estimates was assessed by applying the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach.

RESULTS

Twelve 6- to 12-week trials (N = 2,158; 8-19 years old; 61% boys) involving 8 antipsychotics (aripiprazole, asenapine, paliperidone, risperidone, quetiapine, olanzapine, molindone, and ziprasidone) were analyzed. PANSS total symptom change was comparable among antipsychotics (low- to moderate-quality evidence), except ziprasidone (very low- to low-quality evidence), and all antipsychotics were superior to placebo (low- to high-quality evidence), except ziprasidone and asenapine (low- to moderate-quality evidence). PANSS positive changes and additional efficacy outcomes were comparable among antipsychotics. Weight gain was primarily associated with olanzapine; extrapyramidal symptoms and akathisia were associated with molindone; and prolactin increased with risperidone, paliperidone, and olanzapine. Serious adverse events, discontinuation of treatment, sedation, insomnia, or change in triglycerides did not differ among antipsychotics.

CONCLUSION

This network meta-analysis showed comparable efficacy among antipsychotics for early-onset schizophrenia, except that efficacy appeared inferior for ziprasidone and unclear for asenapine. Adverse reaction profiles varied substantially among the investigated antipsychotics and were largely consistent with prior findings in adults. Protocol registration information-Antipsychotic Treatment for Children With Schizophrenia Spectrum Disorders: Network Meta-Analysis of Randomised Trials; https://www.crd.york.ac.uk/PROSPERO/; CRD42013006676.

Pharmacotherapy effectiveness for clinical subgroups among children and adolescents with early onset schizophrenia

OBJECTIVE

This study aims to determine the effectiveness of pharmacotherapies among children and adolescents diagnosed with early onset schizophrenia subgrouped according to their co-occurring psychiatric disorders.

METHODS

A retrospective cohort design was employed, using South Carolina's (USA) Medicaid claims dataset covering outpatient and inpatient medical services, between January, 1999 and December, 2013 to identify patients ≤17 years of age. Random effects regression analyses assessed differential changes in acute psychiatric service utilization over time across the 3 subgroups associated with antipsychotic, mood stabilizer, psychostimulant, or antidepressant pharmacotherapy.

RESULTS

For patients with schizophrenia and comorbid mood disorders or emotional dysregulation (Cluster 1), or schizophrenia and severe cognitive impairments (Cluster 2), those treated with monotherapy second-generation antipsychotics (SGAs) over time demonstrated consistently lower use of acute psychiatric treatment services as did those coprescribed mood stabilizers, primarily lithium, or anticonvulsants. In all clusters, including the relatively homogenous subgroup of patients with early onset schizophrenia and few comorbid disorders, acute psychiatric service utilization was significantly higher and more variable over time for those prescribed multiple SGAs.

CONCLUSIONS

Regardless of the specific constellation of symptoms and comorbid disorders targeted, the coprescription of multiple SGAs was not effective over time in stabilizing children and adolescents outside of acute care settings.

Long-Acting Injectable Antipsychotics in Children and Adolescents

OBJECTIVE

While a number of articles have reviewed the use of long-acting injectable antipsychotics (LAIs) in first-episode psychosis, there has been extremely limited focus on LAIs in children and adolescents. This review of the literature evaluated use of LAIs in children and youth under the age of 18.

METHODS

We conducted a comprehensive search of the PubMed, PsychINFO, CINAHL, and EMBASE databases using keywords related to LAIs, children, and psychiatric conditions, including schizophrenia, bipolar disorder, and schizoaffective disorder. Reports were included if they were in English, conducted between 1971 and 2015, and reported on use of LAIs in individuals less than the age of 18.

RESULTS

The search identified seven reports including one open-label trial, three case reports, and three case series. No controlled trials were found. Sample sizes ranged from 1 to 19 with a total of 36 individuals in all cases combined. Mean sample age was 12.1 ± 2.2 in the open-label trial and calculated to be 14.9 ± 1.5 in the remainder of the reports. Most patients (80.6%) were boys. Primary diagnoses included bipolar I disorder (n = 18; 50%), schizophrenia (n = 7; 19.4%), and bipolar spectrum disorders (n = 6; 16.6%). The LAIs used were risperidone long-acting injection (n = 24; 66.7%), paliperidone palmitate (n = 8; 22.2%), fluphenazine decanoate (n = 1; 2.8%), aripiprazole extended-release injectable (n = 1; 2.8%), zuclopenthixol decanoate (n = 1; 2.8%), and olanzapine extended release (n = 1; 2.8%). Most cases reported clinical improvement and the majority of individuals (n = 14; 82.4%) were reported to tolerate the medication well. The most common side effects were weight gain (mean 5.7 ± 4.1 kg in the open-label trial), tremor (n = 2; 5.6%), and oculogyric crisis (n = 2; 5.6%).

CONCLUSIONS

This literature review suggests that LAI use in youth with serious mental illness may improve clinical outcomes and adherence. Side effects of LAIs among youth appear are similar to oral preparations. However, there is a paucity of data despite issues with nonadherence in youth and the fact that they have much to lose and much to gain. Existing reports have substantial methodological limitations, and research is needed to guide the use of LAIs in children and adolescents.

Depression, its comorbidities and treatment, and childhood body mass index trajectories

OBJECTIVE

No prior studies have evaluated depression diagnoses and cumulative antidepressant use in relation to longitudinal body mass index (BMI) trajectories in a population-representative sample.

METHODS

Electronic health record data from 105,163 children ages 8 to 18 years with 314,648 BMI values were used. Depression diagnoses were evaluated as ever versus never, cumulative number of encounters with diagnoses, and total duration of diagnoses. Antidepressants were evaluated as months of use. Associations were evaluated with diagnoses alone, antidepressants alone, and then together, adjusting for covariates.

RESULTS

A total of 6,172 (5.9%) and 10,628 (10.1%) children had a diagnosis of depression or received antidepressant treatment, respectively. At all ages, children receiving Medical Assistance (30.9%) were more likely to be treated with antidepressants. Depression diagnosis and antidepressant use were each independently and positively associated with BMI trajectories; associations were stronger with longer durations of diagnosis and treatment. Among children who received 12 or more months of antidepressants (vs. none), the mean (95% CI) weight gain at 18 years associated with antidepressant use (all classes) was 2.10 (1.76-2.45) kg.

CONCLUSIONS

Depression and antidepressant use were both independently associated with increasing BMIs over time, suggesting an important unintended consequence of healthcare to the obesity epidemic.

[Guidelines for the prescription of mood stabilizers for adolescents: A literature review]

INTRODUCTION

Adolescence is a unique phase of the human developmental process. In adolescents, psychotropic medications may have different efficacy and tolerance profiles compared to those at other stages of the lifespan. Mood stabilizers are a complex pharmacological category including lithium, some anticonvulsants, and some second generation antipsychotics. Focusing on this class of pharmacological agents, we aim to answer the following questions: in which indications and according to which modalities should mood stabilizers be prescribed during adolescence?

METHODS

Information was sought from the websites of the French Haute Autorité de santé (HAS) and Agence nationale de sécurité du médicament et des produits de santé (ANSM), the American Food and Drug Administration (FDA) and the British National Institute for Health and Clinical Excellence (NICE). Guidelines from the American Academy of Child and Adolescent Psychiatry (AACAP) were also reviewed. Additional articles were found using PubMed and Google Scholar. We assumed that guidelines published by a national institute were the most relevant, second information from medical academies, then literature reviews, and finally single studies. Practical prescription data were also sought from the French Vidal Drug Dictionary.

RESULTS

For bipolar disorder in adolescents, lithium has been the first drug licensed in France (from the age of 16) and in the USA (from the age of 12), with indications for acute mania and preventive treatment. Benefits for impulsive and self-aggressive behaviour disorders (especially relevant in case of borderline personality disorder) have also been documented, although lithium has not been licensed in any country for those indications. Extended-release tablets are usually used, at doses targeting for a lithiemia between 0.8 and 1.2mEq/L 12hours after last intake. Because of a narrow therapeutic window and potential side effects (especially nephrotoxicity), lithium prescription requires regular blood tests and good treatment compliance. None of the anticonvulsants has been licensed by a national drug administration as a mood stabilizer in adolescents. However, the AACAP recommends valproate as a first line treatment for mania, even though the NICE and the ANSM caution that valproate should not be used by women of child bearing age. Besides its teratogenic and endocrine side effects, valproate exposes one to the risk of hepatic toxicity. That is why regular liver function tests should be prescribed when valproate is chosen. According to the AACAP, carbamazepine (which is licensed for the treatment of mania in adults) is not a first line treatment for adolescents. Indeed, no clinical study has demonstrated its efficacy on manic episodes in adolescents. Moreover, carbamazepine exposes one to the risk of agranulocytosis. Lamotrigine has not been approved for adolescents, but some studies suggest its efficacy for bipolar depression (often a treatment-resistant phase) in this age group. Major side effects are the risk of Lyell or Stevens-Johnsons syndrome (which usually occur within the first eight weeks of treatment). There is no need for biological tests, just clinical monitoring. Pharmacological interactions between lamotrigine and oral contraceptives require caution. Finally, the use of some second generation antipsychotics for bipolar disorder in adolescents has been approved by national drug administrations. In France, only aripiprazole is licensed for acute mania (from the age of 13). In the USA, aripiprazole is licensed from the age of 10 for acute mania and preventive treatment, while risperidone and quetiapine are licensed from the age of 10 for acute mania, and olanzapine is licensed from the age of 13 for acute mania. The AACAP recommends second generation antipsychotics as a first line treatment for bipolar disorder. Moreover, the AACAP and the NICE recommend second generation antipsychotics for behavioural disorders in adolescents. Recommended doses are usually lower and titration slower than for adults. As in adults, adverse effects are metabolic, motor and cognitive disorders. Moreover, hyperprolactinemia, sedation and weight gain are more frequent than in adults.

DISCUSSION

Epidemiologic data for prescription of mood stabilizers in adolescents only partially concord with recommendations from drug administrations and scientific societies. On the one hand, there is a trend toward preferential prescription of second generation antipsychotics, on the other hand lithium is hardly prescribed to adolescents, less often than anticonvulsants. Thus, without approval from any drug administration, the anticonvulsants are often preferred to lithium (because of lithium's potential risks due to noncompliance or voluntary poisoning) and to second generation antipsychotics (because of their tolerance profile). Nevertheless, for prescribers it is a complex matter to compare side effects: the frequency and intensity of adverse effects is quite variable from one mood stabilizer to another, and such a thing as an expected value is therefore hard to define. Regardless of the medication chosen, compliance and therapeutic alliance are major issues. Compliance is especially low during adolescence (less than 40% according to a study on bipolar disorder). This lack of compliance has multiple determinants: poor acceptance or misunderstanding of the psychiatric disorder, indirect effects of bad relationships with parents and more generally adults, but also reckless behaviour or death wishes. Improving therapeutic alliance appears as a major challenge for health practitioners dealing with youth. One interesting path of research could be the therapeutic education programs using humanistic communication techniques (addressing both adolescents and their parents) which have already produced encouraging results.

System struggles and substitutes: A qualitative study of general practitioner and psychiatrist experiences of prescribing antipsychotics to children and adolescents

There are significant controversies regarding rising antipsychotic prescription trends in children and adolescents. Many pharmacoepidemiology trend studies have been published, and interpretations of these data are helpful in explaining what is happening in prescribing practices, but not why these patterns exist. There is a lack of qualitative data in this area, and the experience of prescribing antipsychotics to children and adolescents has not been adequately researched. We conducted a qualitative study using an interpretive phenomenological analysis of physicians' experiences of antipsychotic prescribing to children and adolescents. Prescribers participated in individual interviews and a focus group. We used a staged approach for data analysis of transcriptions. In all, 11 physicians including psychiatrists and general practitioners participated in our study. We identified themes related to context, role and identity, and decision-making and filtering Struggles with health system gaps were significant leading to the use of antipsychotics as substitutes for other treatments. Physicians prescribed antipsychotics to youth for a range of indications and had significant concerns regarding adverse effects. Our results provide knowledge regarding the prescribers' experience of antipsychotics for children and adolescents. Important gaps exist within the health system that are creating opportunities for the initiation and continued use of these agents.

Therapeutic drug monitoring as a measure of proactive pharmacovigilance in child and adolescent psychiatry

INTRODUCTION

Off-label or unlicensed use of psychotropic drugs is common rather than the exception in child and adolescent psychiatry. This use exposes patients to an unknown additional risk of ineffective or even harmful treatment. In addition, treatment with psychotropic drugs during a period of life when the patient undergoes marked developmental hormonal and neurobiological changes often requires different dosing regimes in later life and may result in adverse drug reactions, which are either not seen in adults at all or not in the same frequency. Areas covered: Given these critical safety issues, efficient pharmacovigilance methods as part of routine practice are essential for the improvement of patient care. The purpose of this article is to introduce methods to increase the safety of psychotropic drug use in youngsters. In particular, therapeutic drug monitoring (TDM) as a routine measure of proactive pharmacovigilance is discussed. Expert opinion: Given the special features of psychopharmacological therapy in children and adolescents in day-to-day clinical practise, proactive surveillance by using a close standardized 'patient monitoring' and long-term follow-up with TDM is very important. This approach could minimize the risk of exposing paediatric patients to ineffective treatments of uncertain or unknown risks.

Challenges and Promises of Pediatric Psychopharmacology

Most prescriptions for psychotropic medications are written by primary care physicians, yet pediatricians, many of whom are teaching residents and medical students about pediatric psychopharmacology, often feel inadequately trained to treat mental health concerns. Over the past several decades, the number, size, and quality of psychopharmacologic studies in youth has greatly increased. Here we review the current evidence for efficacy and safety of each of the major pharmacologic drug classes in youth (psychostimulants, antidepressants, mood stabilizers, and antipsychotics). Psychostimulants have a robust body of literature supporting their evidence as first-line treatment for attention-deficit/hyperactivity disorder. Selective serotonin reuptake inhibitors (SSRIs) have documented efficacy for pediatric depression and multiple different anxiety disorders with childhood onset. Combining cognitive-behavioral therapy with SSRI treatment enhances treatment benefit and minimizes adverse events of medication. Mood stabilizers, including lithium and anticonvulsant medications, have a less robust strength of evidence and come with more problematic side effects. However, they are increasingly prescribed to youth, often to treat irritability, mood lability, and aggression, along with treatment of bipolar disorder. Antipsychotics have long been a mainstay of treatment for childhood-onset schizophrenia, and in recent years, the evidence base for providing antipsychotics to youth with bipolar mania and autistic disorder has grown. Most concerning with antipsychotics are the metabolic side effects, which appear even more problematic in youth than adults. By better understanding the evidence-based psychopharmacologic interventions, academic pediatricians will be able to treat patients and prepare future pediatrician to address the growing mental health care needs of youth.

Antipsychotic Use Trends in Youth With Autism Spectrum Disorder and/or Intellectual Disability: A Meta-Analysis

OBJECTIVE

Although irritability and aggression are relevant treatment targets in autism spectrum disorders (ASDs) and intellectual disability (ID) that may prompt antipsychotic use, antipsychotic prescribing patterns in such youth have not been systematically reviewed.

METHOD

We systematically searched PubMed/MEDLINE/PsycInfo until March 2015 for studies reporting data on the frequency of youth diagnosed with ASDs and/or ID among antipsychotic-treated youth, as well as antipsychotic use in youth with ASD/ID, conducting a meta-analysis and meta-regression analysis of potential moderators, including publication year, study time point, country, setting, sample size, age, sex, and race/ethnicity.

RESULTS

A total of 39 studies were meta-analyzed (n = 365,449, age = 11.4 ± 6.2 years, males = 70.0% ± 10.0%). Among 27 studies (n = 273,139, age = 11.9 ± 8.0 years, males = 67.0% ± 12.9%) reporting on antipsychotic-treated youth, 9.5% (95% CI = 7.8%-11.5%) were diagnosed with ASD/ID. In 20 studies (n = 209,756) reporting data separately for ASD, 7.9% (95% CI = 6.2%-9.9%) had an ASD diagnosis. In 5 longitudinal studies, the proportion of antipsychotic-treated youth with ASD did not change significantly from 1996 to 2011 (6.7% to 5.8%, odds ratio = 0.9, 95% CI = 0.8-1.0, p =.17). However, later study time point moderated greater ASD/ID proportions (β = 0.12, p < .00001). In 13 studies (n = 96,688, age = 9.8 ± 1.2 years, males = 78.6% ± 2.0%) reporting on antipsychotic use in ASD samples, 17.5% (95% CI = 13.7%-22.1%) received antipsychotics. Again, later study time point moderated higher antipsychotic use among patients with ASD (β = 0.10, p = .004).

CONCLUSION

Almost 1 in 10 antipsychotic-treated youth were diagnosed with ASD and/or ID, and 1 in 6 youth with ASD received antipsychotics. Both proportions increased in later years; however, clinical reasons and outcomes of antipsychotic use in ASD/ID require further study.

Unmet needs in paediatric psychopharmacology: Present scenario and future perspectives

Paediatric psychopharmacology holds great promise in two equally important areas of enormous biomedical and social impact, namely the treatment of behavioural abnormalities in children and adolescents, and the prevention of psychiatric disorders with adolescent- or adult-onset. Yet, in striking contrast, pharmacological treatment options presently available in child and adolescent psychiatry are dramatically limited. The most important currently unmet needs in paediatric psychopharmacology are: the frequent off-label prescription of medications to children and adolescents based exclusively on data from randomized controlled studies involving adult patients; the frequent lack of age-specific dose, long-term efficacy and tolerability/safety data; the lack of effective medications for many paediatric psychiatric disorders, most critically autism spectrum disorder; the scarcity and limitations of randomized placebo-controlled trials in paediatric psychopharmacology; the unexplored potential for the prevention of psychiatric disorders with adolescent- and adult-onset; the current lack of biomarkers to predict treatment response and severe adverse effects; the need for better preclinical data to foster the successful development of novel drug therapies; and the effective dissemination of evidence-based treatments to the general public, to better inform patients and families of the benefits and risks of pharmacological interventions during development. Priorities and strategies are proposed to overcome some of these limitations, including the European Child and Adolescent Clinical Psychopharmacology Network, as an overarching Pan-European infrastructure aimed at reliably carrying out much needed psychopharmacological trials in children and adolescents, in order to fill the identified gaps and improve overall outcomes.

Outcome of Youth with Early-Phase Schizophrenia-Spectrum Disorders and Psychosis Not Otherwise Specified Treated with Second-Generation Antipsychotics: 12 Week Results from a Prospective, Naturalistic Cohort Study

OBJECTIVES

The purpose of this study was to assess differences in the outcomes of youth with schizophrenia-spectrum disorders (SCZ-S) and psychotic disorder not otherwise specified (PsyNOS) during early antipsychotic treatment.

METHODS

The study was a prospective, naturalistic, inception cohort study of youth ≤19 years old with SCZ-S (schizophrenia, schizoaffective disorder, schizophreniform disorder) or PsyNOS (PsyNOS, brief psychotic disorder) and ≤24 months of lifetime antipsychotic treatment receiving clinician's choice antipsychotic treatment. Baseline demographic, illness and treatment variables, and effectiveness outcomes were compared at 12 weeks last-observation-carried-forward across SCZ-S and PsyNOS patients, adjusting for significantly different baseline variables.

RESULTS

Altogether, 130 youth with SCZ-S (n=42) or PsyNOS (n=88), mostly antipsychotic naïve (76.9%), were prescribed risperidone (47.7%), olanzapine (19.2%), aripiprazole (14.6%), quetiapine (11.5%), or ziprasidone (6.9%). Compared with those with PsyNOS, SCZ-S youth were older (16.4±2.1 vs. 14.8±3.2, p=0.0040), and less likely to be Caucasian (19.1% vs. 42.5%, p=0.009). At baseline, SCZ-S patients had significantly higher Clinical Global Impressions-Severity (CGI-S) scores (6.0±0.9 vs. 5.5±0.8, p=0.0018) and lower Children's Global Assessment Scale (CGAS) scores (29.6±9.2 vs. 36.1±8.9, p=0.0002) and were more likely to be in the severely ill CGAS group (i.e., CGAS≤40). SCZ-S and PsyNOS patients did not differ regarding all-cause discontinuation (40.5 vs. 40.3%. p=0.49), discontinuation because of adverse effects (12.2% vs. 12.4%, p=0.97), or nonadherence (29.3% vs. 30.9%, p=0.88), but somewhat more SCZ-S patients discontinued treatment for inefficacy (19.5% vs. 7.4%, p=0.063). CGI-S and CGAS scores improved significantly in both diagnostic groups (p=0.0001, each). Adjusting for baseline differences, PsyNOS patients experienced significantly better CGI-I improvement (CGI-I) scores (p=0.012) and more frequently reached higher categorical CGAS group status (p=0.021) than SCZ-S patients.

CONCLUSIONS

Both youth with SCZ-S and those with PsyNOS experienced significant improvements with clinician's choice antipsychotic treatment. However, treatment discontinuation was common within 12 weeks, with greater inefficacy-related discontinuation in the SCZ-S group, whereas CGI-I and CGAS score-based improvements were greater in the PsyNOS group.

The effect of antidepressants and antipsychotics on weight gain in children and adolescents

Psychiatric illness in the paediatric population is increasing and the weight effect of medications for these problems is often unclear. A comprehensive literature search was undertaken to identify studies reporting weight in relation to antipsychotic and antidepressant use in children and adolescents. From 636 articles, 42 were selected for review. Selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs) do not cause weight gain and may lead to improvements in weight status over the short, but not, long term. Antipsychotics were generally associated with weight gain. In drug comparison studies, risperidone had a larger weight gain effect than lithium, divalproex sodium and pimozide. Studies assessing the weight-protective effects of augmentation therapy with metformin or topiramate show less weight gain with addition of these agents. In conclusion, prescribing of SSRIs and SNRIs may be associated with improvements in weight status in children and adolescents but trials assessing their use in obesity, outside of established psychiatric illness, are limited and still experimental. Youth prescribed antipsychotic medication should be monitored for exaggerated weight gain and in those where obesity is a pre-existing concern agents other than olanzapine, clozapine and risperidone may be advantageous.

Child and adolescent psychiatrists' reported monitoring behaviors for second-generation antipsychotics

OBJECTIVE

The number of children and adolescents (hereafter referred to as "children") who have been prescribed second-generation antipsychotics (SGAs) has increased over the last decade, but little is known about monitoring practices in pediatric patients who are vulnerable to adverse effects. We examined factors associated with psychiatrists' self-reported monitoring of children who were prescribed SGAs.

METHODS

A survey was mailed to a national, randomly selected sample of 1600 child and adolescent psychiatrists from the American Medical Association mailing list. Using logistic regression, we tested whether psychiatrist characteristics, attitudes, and practice characteristics were associated with monitoring (baseline and/or periodic) the following: Patient history, height and weight, blood pressure, waist circumference, lipid and glucose levels, and electrocardiogram.

RESULTS

Among the analytic sample of 308, at least two thirds reported monitoring patient history, height and weight, blood pressure, and fasting plasma lipids and glucose; 23% reported monitoring waist circumference; and 12% reported conducting an electrocardiogram. More than one third stated that they routinely monitored thyroid levels and more than half reported monitoring complete blood count and electrolytes/blood urea nitrogen. Psychiatrists reporting that they were able to measure vital signs on site were more likely to measure height and weight. Those who reported feeling comfortable conducting a physical examination were more likely to measure blood pressure. Those answering that the risk of metabolic syndrome was low were less likely to measure blood pressure and waist circumference. Being board certified and able to measure vital signs on site were associated with more monitoring of glucose and lipid levels. Conversely, years in practice and feeling that patients were nonadherent with blood work were associated with less monitoring of glucose and lipid levels.

CONCLUSIONS

In this sample, inconsistent monitoring patterns of children prescribed SGAs were found. Efforts to communicate guidelines' evidence base and improve office capacity to measure and track adverse effects are needed to increase appropriate adverse effect monitoring in children who have been prescribed SGAs.

60 years of advances in neuropsychopharmacology for improving brain health, renewed hope for progress

Pharmacotherapy is effective in helping many patients suffering from psychiatric and neurological disorders, and both psychotherapeutic and stimulation-based techniques likewise have important roles to play in their treatment. However, therapeutic progress has recently been slow. Future success for improving the control and prevention of brain disorders will depend upon deeper insights into their causes and pathophysiological substrates. It will also necessitate new and more rigorous methods for identifying, validating, developing and clinically deploying new treatments. A field of Research and Development (R and D) that remains critical to this endeavour is Neuropsychopharmacology which transformed the lives of patients by introducing pharmacological treatments for psychiatric disorder some 60 years ago. For about half of this time, the European College of Neuropsychopharmacology (ECNP) has fostered efforts to enhance our understanding of the brain, and to improve the management of psychiatric disorders. Further, together with partners in academia and industry, and in discussions with regulators and patients, the ECNP is implicated in new initiatives to achieve this goal. This is then an opportune moment to survey the field, to analyse what we have learned from the achievements and failures of the past, and to identify major challenges for the future. It is also important to highlight strategies that are being put in place in the quest for more effective treatment of brain disorders: from experimental research and drug discovery to clinical development and collaborative ventures for reinforcing "R and D". The present article sets the scene, then introduces and interlinks the eight articles that comprise this Special Volume of European Neuropsychopharmacology. A broad-based suite of themes is covered embracing: the past, present and future of "R and D" for psychiatric disorders; complementary contributions of genetics and epigenetics; efforts to improve the treatment of depression, neurodevelopmental and neurodegenerative disorders; and advances in the analysis and neuroimaging of cellular and cerebral circuits.

Learning from the past and looking to the future: Emerging perspectives for improving the treatment of psychiatric disorders

Modern neuropsychopharmacology commenced in the 1950s with the serendipitous discovery of first-generation antipsychotics and antidepressants which were therapeutically effective yet had marked adverse effects. Today, a broader palette of safer and better-tolerated agents is available for helping people that suffer from schizophrenia, depression and other psychiatric disorders, while complementary approaches like psychotherapy also have important roles to play in their treatment, both alone and in association with medication. Nonetheless, despite considerable efforts, current management is still only partially effective, and highly-prevalent psychiatric disorders of the brain continue to represent a huge personal and socio-economic burden. The lack of success in discovering more effective pharmacotherapy has contributed, together with many other factors, to a relative disengagement by pharmaceutical firms from neuropsychiatry. Nonetheless, interest remains high, and partnerships are proliferating with academic centres which are increasingly integrating drug discovery and translational research into their traditional activities. This is, then, a time of transition and an opportune moment to thoroughly survey the field. Accordingly, the present paper, first, chronicles the discovery and development of psychotropic agents, focusing in particular on their mechanisms of action and therapeutic utility, and how problems faced were eventually overcome. Second, it discusses the lessons learned from past successes and failures, and how they are being applied to promote future progress. Third, it comprehensively surveys emerging strategies that are (1), improving our understanding of the diagnosis and classification of psychiatric disorders; (2), deepening knowledge of their underlying risk factors and pathophysiological substrates; (3), refining cellular and animal models for discovery and validation of novel therapeutic agents; (4), improving the design and outcome of clinical trials; (5), moving towards reliable biomarkers of patient subpopulations and medication efficacy and (6), promoting collaborative approaches to innovation by uniting key partners from the regulators, industry and academia to patients. Notwithstanding the challenges ahead, the many changes and ideas articulated herein provide new hope and something of a framework for progress towards the improved prevention and relief of psychiatric and other CNS disorders, an urgent mission for our Century.

Risk factors for weight gain and metabolic syndrome in adolescents with psychiatric disorders: a historical prospective study

OBJECTIVE

Adolescents with mental disorders are at increased risk for being overweight or obese, and subsequently developing metabolic syndrome. However, data regarding risk factors for weight gain during psychiatric hospitalization of adolescents are limited and inconsistent. The aim of this study was to investigate the sociodemographic, clinical, and pharmacological risk factors for weight gain during psychiatric treatment, in order to improve prevention of subsequent metabolic syndrome.

METHODS

We conducted a historical prospective study of 146 adolescent patients (mean age 15.2±1.9 years, 52.7% males), consecutively admitted for day treatment in an adolescent day unit (length of stay 141±76 days). Anthropometric measurements and laboratory analyses of fasting glucose and lipid levels were conducted as part of the routine medical care at admission and discharge. Psychiatric diagnoses, medication histories, and sociodemographic data were obtained from the electronic medical records system.

RESULTS

A significant increase in age- and gender adjusted body mass index (BMI) (i.e., z score) was observed (0.5±1.2 vs. 0.7±1.1 at admission and discharge, respectively, p<0.001). Male subjects were more prone to weight gain than females (odds ratio [OR]=3.5, 95% CI=1.2-10.3) and BMI z score at admission was inversely associated with weight gain (R (2)=0.2, p<0.0001). Surprisingly, age at admission, psychiatric diagnoses, length of stay, and number of medications were not associated with weight gain. Despite weight gain, fasting blood glucose and lipid profile did not change significantly during the study period.

CONCLUSIONS

Hospitalization of adolescents in a psychiatric day unit may be associated with a significant weight gain, especially in male subjects and those with normal weight at admission. Efforts should be aimed to reduce weight gain among youth with psychiatric disorders during treatment, to avoid a subsequent metabolic syndrome.

Antipsychotic treatment for children and adolescents with schizophrenia spectrum disorders: protocol for a network meta-analysis of randomised trials

INTRODUCTION

Antipsychotic treatment in early-onset schizophrenia (EOS) lacks a rich evidence base, and efforts to rank different drugs concerning their efficacy have not proven any particular drug superior. In contrast to the literature regarding adult-onset schizophrenia (AOS), comparative effectiveness studies in children and adolescents are limited in number and size, and only a few meta-analyses based on conventional methodologies have been conducted.

METHODS AND ANALYSES

We will conduct a network meta-analysis of all randomised controlled trials (RCTs) that evaluate antipsychotic therapies for EOS to determine which compounds are efficacious, and to determine the relative efficacy and safety of these treatments when compared in a network meta-analysis. Unlike a contrast-based (standard) meta-analysis approach, an arm-based network meta-analysis enables statistical inference from combining both direct and indirect comparisons within an empirical Bayes framework. We will acquire eligible studies through a systematic search of MEDLINE, the Cochrane Central Registry of Controlled Trials, Clinicaltrials.gov and Centre for Reviews and Dissemination databases. Eligible studies should randomly allocate children and adolescents presenting with schizophrenia or a related non-affective psychotic condition to an intervention group or to a control group. Two reviewers will-independently and in duplicate-screen titles and abstracts, complete full text reviews to determine eligibility, and subsequently perform data abstraction and assess risk of bias of eligible trials. We will conduct meta-analyses to establish the effect of all reported therapies on patient-relevant efficacy and safety outcomes when possible.

ETHICS AND DISSEMINATION

No formal ethical procedures regarding informed consent are required as no primary data collection is undertaken. The review will help facilitate evidence-based management, identify key areas for future research, and provide a framework for conducting large systematic reviews combining direct and indirect comparisons. The study will be disseminated by peer-reviewed publication and conference presentation.

TRIAL REGISTRATION NUMBER

PROSPERO CRD42013006676.

Metabolic consequences of second-generation antipsychotics in youth: appropriate monitoring and clinical management

Objective

To review the metabolic consequences of second-generation antipsychotics in youth and current monitoring and intervention guidelines for optimal treatment.

Background

Second-generation antipsychotics have largely replaced the use of first-generation antipsychotics in treating psychotic disorders in youth. In addition, there has been a dramatic increase in using these medications to treat a variety of nonpsychotic disorders. These medications have significant metabolic side effects, including weight gain. This raises concern, given the problem of pediatric obesity.

Materials and methods

A review of current literature looking at prescribing practices and possible reasons for the increased use of second-generation antipsychotics in children and adolescents was conducted. Review of the mechanisms for why youth may be particularly vulnerable to the metabolic consequences (particularly weight gain) was similarly completed. In addition, data supporting the efficacy, rationale, and unique side-effect profile of each individual second-generation drug were evaluated to help inform providers on when and what to prescribe, along with current monitoring practices. The current evidence base for possible interventions regarding the management of antipsychotic-induced weight gain was also evaluated.

Results and conclusion

On the basis of the literature review, there are several speculated reasons for the increase in prescriptions of second-generation antipsychotics. The choice of antipsychotic for youth should be based upon the disorder being treated along with the unique side-effect profile for the most commonly used second-generation antipsychotics. Monitoring strategies are also individualized to each antipsychotic. The current interventions recommended for antipsychotic-induced weight gain include lifestyle management, switching medication to a drug with a lower propensity for weight gain, and pharmacologic (particularly metformin) treatment.

Iatrogenic comorbidity in childhood and adolescence: new insights from the use of antidepressant drugs

The term "iatrogenic comorbidity" refers to unfavorable modifications in the course of an illness, with regard to its characteristics and responsiveness, which may be related to previous treatments. Some iatrogenic adverse events arising from either pharmacotherapy or psychotherapy cannot be subsumed under the traditional rubric of adverse effects and require careful evaluation. Children and adolescents are generally more likely to experience adverse health consequences after drug treatment. The use of antidepressant drugs in this age group may cause potential long-term detrimental effects, such as mood elevation that does not subside when drugs are discontinued and may predispose to the development of a bipolar disorder. The concept of iatrogenic comorbidity in children and adolescents has heuristic value in weighing potential benefits and risks associated particularly with psychotropic treatments.

Risk of diabetes in children and adolescents exposed to antipsychotics: a nationwide 12-year case-control study

OBJECTIVE

Antipsychotics are associated with weight gain and diabetes. The risk and rate of diabetes in children and adolescents treated with antipsychotics is unclear.

METHOD

A longitudinal register linkage case-control study of diabetes in all psychiatric patients aged <18 years in Denmark was performed from January 1999 through the end of June 2010. Patients with and without antipsychotic exposure were compared regarding the occurrence of type 2 diabetes, defined as the prescription of oral antidiabetic medication. Regression analyses with type 2 diabetes as the dependent variable were conducted with sex, age, and diagnoses as covariates.

RESULTS

We compared the risk of diabetes in 48,299 psychiatrically ill youth. Of 7,253 youth exposed to antipsychotics, 52 (0.72%; 95% CI = 0.52% - 0.91%) developed type 2 diabetes. Of 41,046 youth without exposure to antipsychotics, 111 (0.27%; 95% CI = 0.22% - 0.32%) developed type 2 diabetes. In a 25,033 + 16,013 logistic regression analysis, type 2 diabetes development was associated with antipsychotic drug exposure (odds ratio [OR] = 1.60; 95% CI = 1.08 - 2.36, p < .05) female sex, (OR = 4.48; 95% CI = 2.90 - 6.91, p < 0.001) and older age at first psychiatric diagnosis (OR = 1.19; 95% CI = 1.12 - 1.27, p < 0.001), but not with psychiatric diagnosis. In a Cox-regression analysis, shorter time to type 2 diabetes onset was associated with female sex (Hazard Ratio (HR) = 4.83; 95% CI = 3.05-7.66, p = 0.001), and older age at first psychiatric diagnosis (HR = 1.19; 95% CI = 1.12-1.28, p = 0.001), while antipsychotic exposure (HR) = 1.41; 95% CI = 0.92-2.16, p = 0.11) trended towards increasing the rate of diabetes.

CONCLUSION

Antipsychotic treatment, female sex, and older age at psychiatric diagnosis were associated with a significantly more frequent type 2 diabetes onset in children and adolescents. Strict indications for antipsychotic treatment and routine cardiometabolic monitoring are crucial.

Prevalence and correlates of antipsychotic polypharmacy in children and adolescents receiving antipsychotic treatment

Antipsychotic polypharmacy (APP), which is common in adults with psychotic disorders, is of unproven efficacy and raises safety concerns. Although youth are increasingly prescribed antipsychotics, little is known about APP in this population. We performed a systematic PubMed search (last update 26 January 2013) of studies reporting the prevalence of APP in antipsychotic-treated youth. Summary statistics and statistical tests were calculated at the study level and not weighted by sample size. Fifteen studies (n = 58 041, range 68-23 183) reported on APP in youth [mean age = 13.4 ± 1.7 yr, 67.1 ± 10.2% male, 77.9 ± 27.4% treated with second-generation antipsychotics (SGAs)]. Data collected in these studies covered 1993-2008. The most common diagnoses were attention-deficit hyperactivity disorder (ADHD; 39.9 ± 23.5%) and conduct disorder/oppositional defiant disorder (CD/ODD; 33.6 ± 24.8). In studies including predominantly children (mean age = <13 yr, N = 5), the most common diagnosis were ADHD (50.6 ± 25.4%) and CD/ODD (39.5 ± 27.5%); while in studies with predominantly adolescents (mean age = ⩾13 yr, N = 7) the most common diagnoses were schizophrenia-spectrum disorders (28.6 ± 23.8%), anxiety disorders (26.9 ± 14.9%) and bipolar-spectrum disorders (26.6 ± 7.0%), followed closely by CD/ODD (25.8 ± 17.7). The prevalence of APP among antipsychotic-treated youth was 9.6 ± 7.2% (5.9 ± 4.5% in child studies, 12.0 ± 7.9% in adolescent studies, p = 0.15). Higher prevalence of APP was correlated with a bipolar disorder or schizophrenia diagnosis (p = 0.019) and APP involving SGA+SGA combinations (p = 0.0027). No correlation was found with APP definition [⩾1 d (N = 10) vs. >30-⩾90 d (N = 5), p = 0.88]. Despite lacking safety and efficacy data, APP in youth is not uncommon, even in samples predominantly consisting of non-psychotic patients. The duration, clinical motivations and effectiveness of this practice require further study.

Long-lasting sensitization induced by repeated risperidone treatment in adolescent Sprague-Dawley rats: a possible D2 receptor mediated phenomenon?

RATIONALE

Risperidone use in children and adolescents for the treatment of various neuropsychiatric disorders (e.g., schizophrenia, autism, disruptive behavior, etc.) has increased substantially in recent decades. However, its long-term effect on the brain and behavioral functions is not well understood.

OBJECTIVE

The present study investigated how a short-term risperidone treatment in adolescence impacts antipsychotic response in adulthood in the conditioned avoidance response and phencyclidine (PCP)-induced hyperlocomotion tests.

METHODS

Male adolescent Sprague-Dawley rats (postnatal days [P] 40-44 or 43-48) were first treated with risperidone (0.3, 0.5, or 1.0 mg/kg, subcutaneously (sc)) and tested in the conditioned avoidance or PCP (3.2 mg/kg, sc)-induced hyperlocomotion model daily for five consecutive days. After they became adults (~P 76-80), they were challenged with risperidone (0.3 mg/kg, sc) to assess their sensitivity to risperidone reexposure. A quinpirole (a D2/3 receptor agonist, 1.0 mg/kg, sc)-induced hyperlocomotion test was later conducted to assess the risperidone-induced functional changes in D2 receptor.

RESULTS

In the risperidone challenge test in adulthood, adult rats previously treated with risperidone in adolescence made significantly fewer avoidance responses and exhibited significantly lower PCP-induced hyperlocomotion than those previously treated with vehicle. They also appeared to be more hyperactive than the vehicle-pretreated ones in the quinpirole-induced hyperlocomotion test. Prepulse inhibition of acoustic startle or fear-induced 22 kHz ultrasonic vocalizations in adulthood was not altered by adolescence risperidone treatment.

CONCLUSIONS

Adolescent risperidone exposure induces a long-term increase in behavioral sensitivity to risperidone that persists into adulthood. This long-lasting change might be due to functional upregulation of D2-mediated neurotransmission.

Adult response to olanzapine or clozapine treatment is altered by adolescent antipsychotic exposure: a preclinical test in the phencyclidine hyperlocomotion model

This study examined how repeated olanzapine (OLZ) or clozapine (CLZ) treatment in adolescence alters sensitivity to the same drug in adulthood in the phencyclidine (PCP) hyperlocomotion model. Male adolescent Sprague-Dawley rats (postnatal day (P) 44-48) were first treated with OLZ (1.0 or 2.0 mg/kg, subcutaneously (sc)) or CLZ (10.0 or 20.0 mg/kg, sc) and tested in the PCP (3.2 mg/kg, sc)-induced hyperlocomotion model for five consecutive days. Then a challenge test with OLZ (0.5 mg/kg) or CLZ (5.0 mg/kg) was administered either during adolescence (~P 51) or after the rats matured into adults (~P 76 and 91). During adolescence, repeated OLZ or CLZ treatment produced a persistent inhibition of PCP-induced hyperlocomotion across the five test days. In the challenge test during adolescence, rats previously treated with OLZ did not show a significantly stronger inhibition of PCP-induced hyperlocomotion than those previously treated with vehicle (VEH). In contrast, those previously treated with CLZ showed a weaker inhibition than the VEH controls. When assessed in adulthood, the enhanced sensitivity to OLZ and the decreased sensitivity to CLZ were detected on ~P 76, even on ~P 91 in the case of OLZ. These findings suggest that adolescent OLZ or CLZ exposure can induce long-term alterations in antipsychotic response that persist into adulthood.

Alpha-2 agonists for attention-deficit/hyperactivity disorder in youth: a systematic review and meta-analysis of monotherapy and add-on trials to stimulant therapy

OBJECTIVE

To meta-analyze the efficacy and safety of α-2 agonists in pediatric attention-deficit/hyperactivity disorder (ADHD).

METHOD

We searched MEDLINE, EMBASE, Cochrane Library, CINAHL, and PsycINFO until May 2013 for randomized trials comparing α-2 agonists with placebo in ADHD youth. Primary outcome was reduction in overall ADHD symptoms. Secondary outcomes included hyperactivity/impulsivity, inattentiveness, oppositional defiant disorder symptoms (ODD symptoms), all-cause discontinuation, specific-cause discontinuation, and adverse effects. Standardized mean differences (SMD), relative risk (RR), and number-needed-to-treat/number-needed-to-harm (NNT/NNH) were calculated. Data were analyzed separately in monotherapy and as add-on to psychostimulants.

RESULTS

Altogether, 12 studies (N = 2,276) were included. Across 9 studies (n = 1,550), α-2 agonist monotherapy significantly reduced overall ADHD symptoms (SMD = -0.59, p < .00001), hyperactivity/impulsivity (SMD = -0.56, p < .00001), inattention (SMD = -0.57, p < .00001), and ODD symptoms (SMD = -0.44, p = .0004). Similarly, α-2 agonist add-on treatment (3 studies, n = 726) significantly reduced overall ADHD symptoms (SMD = -0.36, p < .0001), hyperactivity/impulsivity (SMD = -0.33, p < .0001), and inattention (SMD = -0.34, p < .0001), but effect sizes were lower than in monotherapy trials (p = .03-0.04). As monotherapy, α-2 agonists had lower all-cause (RR = 0.70, p = .01, NNT = 10) and inefficacy-related (RR = 0.39, p < .0001) discontinuations than did placebo; however, intolerability-related discontinuation was similar, despite significantly more common fatigue (NNH = 10), sedation (NNH = 17), and somnolence (NNH = 4) and significantly greater hypotensive (clonidine-IR), bradycardic (clonidine-IR), and QTc prolonging (guanfacine-XR) effects. Added to stimulants, α-2 agonists had all-cause and specific-cause discontinuations that were comparable to those of placebo, but somnolence (NNH = 10) was more common, and hypotensive and bradycardic effects (clonidine-XR and guanfacine-XR) were greater than with placebo.

CONCLUSIONS

α-2 Agonist monotherapy and, possibly to a lesser extent, co-treatment, are significantly superior to placebo for overall, hyperactivity, and inattentive ADHD symptoms. Efficacy advantages need to be balanced against fatigue, somnolence/sedation, hypotension, bradycardia, and possibly QTc prolongation.

Fluoxetine exposure during adolescence alters responses to aversive stimuli in adulthood

The mechanisms underlying the enduring neurobiological consequences of antidepressant exposure during adolescence are poorly understood. Here, we assessed the long-term effects of exposure to fluoxetine (FLX), a selective serotonin reuptake inhibitor, during adolescence on behavioral reactivity to emotion-eliciting stimuli. We administered FLX (10 mg/kg, bi-daily, for 15 d) to male adolescent [postnatal day 35 (P35) to P49] C57BL/6 mice. Three weeks after treatment (P70), reactivity to aversive stimuli (i.e., social defeat stress, forced swimming, and elevated plus maze) was assessed. We also examined the effects of FLX on the expression of extracellular signal-regulated kinase (ERK) 1/2-related signaling within the ventral tegmental area (VTA) of adolescent mice and Sprague Dawley rats. Adolescent FLX exposure suppressed depression-like behavior, as measured by the social interaction and forced swim tests, while enhancing anxiety-like responses in the elevated plus maze in adulthood. This complex behavioral profile was accompanied by decreases in ERK2 mRNA and protein phosphorylation within the VTA, while stress alone resulted in opposite neurobiological effects. Pharmacological (U0126) inhibition, as well as virus-mediated downregulation of ERK within the VTA mimicked the antidepressant-like profile observed after juvenile FLX treatment. Conversely, overexpression of ERK2 induced a depressive-like response, regardless of FLX pre-exposure. These findings demonstrate that exposure to FLX during adolescence modulates responsiveness to emotion-eliciting stimuli in adulthood, at least partially, via long-lasting adaptations in ERK-related signaling within the VTA. Our results further delineate the role ERK plays in regulating mood-related behaviors across the lifespan.

Trends, correlates, and disease patterns of antipsychotic use among children and adolescents in Taiwan

PURPOSE

We used Taiwan's population-based National Health Insurance database to investigate the trends, correlates, and disease patterns of antipsychotic use among children and adolescents.

METHODS

The National Health Research Institutes provided a database of 1,000,000 random subjects for study. We chose subjects who were aged 18 years or younger during 1997-2005. In this sample, subjects who were given at least one antipsychotic prescription, including first-generation antipsychotics (FGAs) or second-generation antipsychotics (SGAs), were identified. Trends, prevalence, and associated factors of antipsychotic use were determined. The proportion of antipsychotic use for psychiatric and medical disorders was also analyzed.

RESULTS

The 1-year prevalence of SGA use increased from 0.00 % in 1997 to 0.09 % in 2005, whereas the 1-year prevalence of FGA use ranged from 2.24 to 3.43 % during this same period, with no significant change. Age and male gender were associated with higher SGA use. Among SGA users, the greatest proportion suffered from psychiatric disorders, including tics, hyperkinetic syndrome of childhood, schizophrenia, affective disorders, and autism. Among FGA users, a larger proportion was for medical conditions, including diseases of the digestive and respiratory systems.

CONCLUSION

The prevalence of pediatric SGA use increased greatly from 1997 to 2005. Among pediatric subjects using antipsychotics, SGAs were mostly used for psychiatric disorders, whereas FGAs were mostly prescribed for medical conditions. Future research will focus on indication, dosage, frequency, duration, adverse effects, and off-label use of antipsychotics in the pediatric population.