Prenatal maternal stress and risk of neurodevelopmental disorders in the offspring: a systematic review and meta-analysis

Purpose

Exposure to prenatal stress has been reported to affect the risk of adverse neurodevelopmental outcomes in the offspring; however, there is currently no clear consensus. The aim of this systematic review and meta-analysis was to examine the existing literature on the association between prenatal stress and autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD) in the offspring.

Methods

Based on a registered protocol, we searched several electronic databases for articles in accordance with a detailed search strategy. We performed this study following the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA).

Results

Prenatal stress was significantly associated with an increased risk of both ASD (pooled OR 1.64 [95% CI 1.15–2.34]; I² = 90%; 15 articles) and ADHD (pooled OR 1.72 [95% CI 1.27–2.34]; I² = 85%; 12 articles).

Conclusions

This study suggests that prenatal stress may be associated with ASD and ADHD; however, several limitations in the reviewed literature should be noted including significant heterogeneity and there is a need for carefully controlled future studies in this area.

     

Maternal smoking during pregnancy and offspring psychiatric disorder: a longitudinal birth cohort study

Background

There is evidence that prenatal stress and smoking during pregnancy both independently increase the risk of offspring psychopathology. Here we examine whether increased levels of self-reported stress is associated with increased smoking in a population of pregnant women, and whether prenatal smoking is associated with offspring psychiatric diagnoses independent of prenatal stress exposure.

Method

Using a longitudinal birth cohort, we used ordered logistic regressions to examine associations between maternal stress and smoking during pregnancy. We then used logistic regression analyses to examine associations between prenatal smoking and later offspring psychiatric disorders.

Results

A dose–response relationship was found between maternally reported stress and smoking during pregnancy. Pregnant women reporting severe stress were more likely to smoke compared to both the moderate stress and no stress groups, and those reporting moderate stress were significantly more likely to smoke compared to the no stress group. Smoking more than 5 cigarettes daily during pregnancy increased the risk of offspring personality disorder (OR 3.08, 95% CI 1.60–5.94) as well as developing any Axis 1 psychiatric disorder, inclusive of mood, anxiety and psychotic disorders (OR 1.45, 95% CI 1.04–2.04). After adjusting for parental psychiatric history and maternal self-reported stress during pregnancy, associations between smoking more than 5 cigarettes daily when pregnancy and offspring personality (OR 2.58 95% CI 1.32–5.06) disorder remained.

Conclusion

Exposure to cigarette smoking during gestation could impact a child’s mental health. Smoking during pregnancy is a prime target for preventative interventions as unlike most other environmental risk factors, it is very amenable to change.

     

Risk of Mental Illness in Offspring of Parents With Schizophrenia,Bipolar Disorder,and Major Depressive Disorder: A Meta-Analysis of Family High-Risk Studies

Objective: Offspring of parents with severe mental illness (SMI; schizophrenia, bipolar disorder, major depressive disorder) are at an increased risk of developing mental illness. We aimed to quantify the risk of mental disorders in offspring and determine whether increased risk extends beyond the disorder present in the parent. Method: Meta-analyses of absolute and relative rates of mental disorders in offspring of parents with schizophrenia, bipolar disorder, or depression in family high-risk studies published by December 2012. Results: We included 33 studies with 3863 offspring of parents with SMI and 3158 control offspring. Offspring of parents with SMI had a 32% probability of developing SMI (95% CI: 24%–42%) by adulthood (age >20). This risk was more than twice that of control offspring (risk ratio [RR] 2.52; 95% CI 2.08–3.06, P < .001). High-risk offspring had a significantly increased rate of the disorder present in the parent (RR = 3.59; 95% CI: 2.57–5.02, P < .001) and of other types of SMI (RR = 1.92; 95% CI: 1.48–2.49, P < .001). The risk of mood disorders was significantly increased among offspring of parents with schizophrenia (RR = 1.62; 95% CI: 1.02–2.58; P = .042). The risk of schizophrenia was significantly increased in offspring of parents with bipolar disorder (RR = 6.42; 95% CI: 2.20–18.78, P < .001) but not among offspring of parents with depression (RR = 1.71; 95% CI: 0.19–15.16, P = .631). Conclusions: Offspring of parents with SMI are at increased risk for a range of psychiatric disorders and one third of them may develop a SMI by early adulthood.Key words: schizophrenia, bipolar disorder, depression, offspring, meta-analysis     

Prenatal stress and affective disorders in a population birth cohort

Kleinhaus K, Harlap S, Perrin M, Manor O, Margalit‐Calderon R, Opler M, Friedlander Y, Malaspina D. Prenatal stress and affective disorders in a population birth cohort.
Bipolar Disord 2012: 00: 000–000. © 2012 John Wiley & Sons A/S.Published by Blackwell Publishing Ltd. Objectives: Pregnant women exposed to an acute traumatic event are thought to produce offspring with an increased incidence of affective disorders. It is not known whether there are specific times in pregnancy which confer increased vulnerability, or if psychosocial stress alone can increase the incidence of affective disorders in offspring. We examined the relationship of the timing of an acute psychosocial threat during pregnancy to the incidence of affective disorders in offspring using data from a large birth cohort. Methods: Using data on 90079 offspring born in Jerusalem in 1964–1976 and linked to Israel’s psychiatric registry, we constructed proportional hazards models to evaluate the link between gestational age during the Arab–Israeli war of June 1967 and incidence of mood disorders. Results: Those in their first trimester of fetal development during the war were more likely to be admitted to hospitals for any mood disorders [relative risk (RR) = 3.01, 95% confidence interval (CI): 1.68–5.39, p = 0.0002]; for bipolar disorder the risk was doubled (RR = 2.44, 95% CI: 0.996–5.99, p = 0.054) and for all ‘other’ mood disorders the risk was tripled (RR = 3.61, 95% CI: 1.68–7.80, p = 0.001). Mood disorders were also increased in offspring whose mothers had been in the third month of pregnancy in June of 1967 (RR = 5.54, 95% CI: 2.73–11.24, p < 0.0001). Conclusions: A time‐limited exposure to a severe threat during early gestation may be associated with an increased incidence of affective disorders in offspring. The third month of fetal development was a moment of special vulnerability.     

Hypertensive disorders in pregnancy and risk of severe mental disorders in the offspring in adulthood: the Helsinki Birth Cohort Study

BackgroundHypertensive disorders may affect the fetal developmental milieu and thus hint at mechanisms by which prenatal adversity associates with mental disorders in later life. We examined if hypertension without proteinuria and preeclampsia in pregnancy predict serious mental disorders in the offspring, and if sex, childhood socioeconomic status, length of gestation and parity modify these associations.MethodsWe included 5970 women and men born after a normotensive, hypertensive or preeclamptic pregnancy defined by using mother's blood pressure and urinary protein measurements at maternity clinics and birth hospitals. Mental disorders requiring hospitalization or contributing to death were identified from the Finnish Hospital Discharge and Causes of Death Registers between years 1969 and 2004.ResultsIn comparison to the offspring born after normotensive pregnancies, offspring born after pregnancies complicated by hypertension without proteinuria were at 1.19-fold (CI: 1.01–1.41, P-value = 0.04) higher risk of any mental disorder and 1.44- (CI: 1.11–1.88, P-value < 0.01) and 1.39-fold (CI: 0.99–1.93, P-value = 0.05) higher risk of mood and anxiety disorder, respectively. In contrast, preeclampsia was associated, with a lower risk of any mental disorder in the male offspring (P-value = 0.02; P-value = 0.04 for interaction ‘sex × normotension/preeclampsia’).ConclusionsHypertension without proteinuria in pregnancy was associated with a higher risk of serious mental disorders in the offspring in adulthood. Preeclampsia seems to, in turn, associate with lower risk of severe mental disorders in male offspring.     

Sexual minority status modifies the association between HIV risk behavior and prevalent mood or anxiety disorders in British Columbia,Canada

Purpose

This study aimed at determining to what extent sexual minority status modifies the association between HIV risk behavior and prevalent mood or anxiety disorder diagnosis in British Columbia (BC), Canada, using a population-based survey.

Methods

This analysis was based on the cross-sectional 2013–2014 Canadian Community Health Survey. The sample was restricted to respondents in BC with valid responses to the survey items considered. A multivariable logistic model, where the behavioral HIV risk score exposure was nested into the sexual minority status modifier, estimated the odds of having a prevalent mood or an anxiety disorder. The behavioral HIV risk score (0, 1, 2, ≥ 3) included the following five measures: (1) age at first intercourse < 14 years, (2) condom use during last intercourse, (3) history of sexually transmitted infections, (5) number of sexual partners in the past 12 months (< 4, ≥ 4), and substance use in the past 12 months.

Results

Of the weighted sample (2,521,252), 97% (95% confidence interval (CI) 97–98) were heterosexual, while 3% (95% CI 2–3) were lesbian, gay, and bisexual (LGB). The prevalence of a mood or anxiety disorder diagnosis was 12% (95% CI 11–13). For every 1-level increment in the behavioral HIV risk score, the adjusted odds ratio of having a prevalent mood or anxiety disorder diagnosis was 1.29 (95% CI 1.03–1.54) for heterosexual respondents and 2.37 (95% CI 1.84–2.90) for LGB respondents.

Conclusion

Sexual minority status modified the relationship between HIV risk behavior and prevalent mood or anxiety disorders, with a stronger association among LGB respondents. Healthcare providers should prioritize integrated care that addresses the intersectionality between sexual risk, substance use, and mood or anxiety disorders.

     

Comparative Efficacy and Tolerability of Adjunctive Pharmacotherapies for Acute Bipolar Depression: A Systematic Review and Network Meta-analysis

Objective:We investigated the comparative efficacy and tolerability of augmentation strategies for bipolar depression.Data Sources:We conducted a systematic review and network meta-analysis of 8 electronic databases for double-blind, randomized controlled trials of adjunctive pharmacotherapies for acute bipolar depression.Data Extraction and Synthesis:We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and applied the Cochrane risk of bias tool for study quality appraisal. Two reviewers independently abstracted data. We resolved all discrepancies by consensus.Main Outcomes and Measures:Primary outcomes were response and completion of treatment. We estimated summary rate ratios (RRs) and standardized mean differences (SMDs) relative to placebo controls using frequentist random-effects network meta-analysis.Results:We identified 69 trials meeting eligibility criteria (8,007 participants, 42.8 years, 58.0% female). Adjunctive racemic intravenous ketamine, coenzyme Q10, pramipexole, fluoxetine, and lamotrigine were more effective than placebo. Summary RRs for response ranged between 1.51 (95% confidence interval [CI], 1.11 to 2.06) for fluoxetine and 12.49 (95% CI, 3.06 to 50.93) for racemic intravenous ketamine. For completion of treatment, risperidone appeared less tolerable than placebo (RR = 0.59; 95% CI, 0.38 to 0.94), while fluoxetine seemed more tolerable than placebo (RR = 1.13; 95% CI, 1.02 to 1.24). None of the investigated agents were associated with increased treatment-emergent mood switches.Conclusions and Relevance:The evidence for augmentation strategies in bipolar depression is limited to a handful of agents. Fluoxetine appeared to have the most consistent evidence base for both efficacy and tolerability. There remains a need for additional research exploring novel treatment strategies for bipolar depression, particularly head-to-head studies.     

Cigarette smoking and risk of completed suicide: A meta-analysis of prospective cohort studies

BackgroundEpidemiologic studies have reported conflicting results relating smoking to suicide risk. We conducted a meta-analysis of prospective cohort studies to evaluate the association of cigarette smoking with completed suicide.MethodsEligible prospective cohort studies were identified from PubMed and EMbase databases (from 1966 to May 2011) and the reference lists of retrieved articles. Two authors independently extracted data and assessed study quality using the Newcastle–Ottawa Scale. Study-specific risk estimates were pooled using random-effects model and generalized least squares trend estimation was used to assess dose–response relationship.ResultsFifteen prospective cohort studies involving 2395 cases among 1,369,807 participants were included in the meta-analysis. Our data suggested that cigarette smoking significantly increased the risk of completed suicide. Compared with never smokers, the pooled RR was 1.28 (95% CI: 1.001–1.641) for former smokers, and 1.81 (95% CI: 1.50–2.19) for current smokers, respectively. Subgroup analyses showed that the increased suicide risk among current smokers appeared to be consistent, although there was heterogeneity among studies of current smoking (p < 0.001). Significant dose–response relationship was found between smoking and suicide, and the risk of suicide was increased by 24% for each increment of 10 cigarettes smoked per day (RR, 1.24; 95% CI: 1.20–1.28).ConclusionsOur meta-analysis robustly demonstrates that cigarette smoking is associated with an increased risk of completed suicide, consistent with a dose–response relationship. This conclusion has an important public health message for countries with high smoking prevalence and high suicide rate such as China.     

Risk of affective disorders following prenatal exposure to severe life events: a Danish population-based cohort study

Objective

To examine the effect of prenatal exposure to severe life events on risk of affective disorders in the offspring.

Methods

In a cohort of 1.1 million Danish births from May 1978 until December 1997, mothers were considered exposed if one (or more) of their close relatives died or was diagnosed with serious illness up to 6 months before conception or during pregnancy. Offspring were followed up from their 10th birthday until their death, migration, onset of affective disorder or 31 December 2007; hospital admissions were identified by linkage to the Central Psychiatric Register. Log-linear Poisson regression was used for data analysis.

Results

The risk of affective disorders was increased in male offspring whose mothers were exposed to severe life events during the second trimester (adjusted RR 1.55 [95% CI 1.05-2.28]). There was an increased risk of male offspring affective disorders in relation to maternal exposure to death of a relative in the second trimester (adjusted RR 1.74 [95% CI 1.06-2.84]) or serious illness in a relative before pregnancy (adjusted RR 1.44 [95% CI 1.02-2.05]). There was no evidence for an association between prenatal exposure to severe life events and risk of female offspring affective disorders.

Conclusions

Our population-based study suggests that prenatal maternal exposure to severe life events may increase the risk of affective disorders in male offspring. These findings are consistent with studies of populations exposed to famine and earthquake disasters which indicate that prenatal environment may influence the neurodevelopment of the unborn child.     

Maternal smoking during pregnancy and intelligence quotient in offspring: A systematic review and meta-analysis

BackgroundExposure to tobacco during pregnancy may disrupt fetal brain development and impact offspring cognitive development.AimsTo perform a systematic review and meta-analysis on maternal smoking during pregnancy and intelligence quotient (IQ) in childhood, adolescence, and adulthood.MethodsWe searched PubMed, Lilacs, PsycINFO, and Web of Science. Original articles evaluating tobacco use/exposure during pregnancy and the offspring’s IQ as the outcome. The review protocol is registered in PROSPERO (number CRD 42,019,116,257). For the meta-analysis, we included studies with information on the regression coefficient and its confidence interval (CI) or standard error. Random effects model was used for pooling the estimates.Results25 studies were included in the review, and of these 14 met the inclusion criteria for the meta-analysis. The overall pooled estimate showed that subjects who were exposed to maternal smoking during pregnancy presented lower IQ scores, compared to those not exposed to maternal smoking (β -1.30; 95 % CI ―1.74, ―0.86; I² = 87.8 %); IQ scores were also lower in crude (β -5.46; 95 % CI -7.31, -3.60; I²: 79.0 %) and adjusted pooled estimates (β =―0.45; 95 % CI ―0.76, ―0.13; I² = 80.4 %), for the group exposed to maternal smoking. In the stratified analysis, an inverse association was also observed in studies with large sample size (n≥1000 participants) (β=―0.49; 95 % CI ―0.96, ―0.02), among those performed with adolescents (β=―1.16; 95 % CI ―2.18, ―0.14), and among those adjusted for maternal education (β=―0.57; 95 % CI ―1.05, ―0.08).ConclusionsOur findings suggest that exposure to tobacco during pregnancy may have negative effects on IQ. However, the findings of this meta-analysis should be interpreted with caution.     

The mental health of young people who are not in education,employment, or training: a systematic review and meta-analysis

Purpose

There are increasing concerns about the intersection between NEET (not in education, employment, or training) status and youth mental ill-health and substance use. However, findings are inconsistent and differ across types of problems. This is the first systematic review and meta-analysis (PROSPERO-CRD42018087446) on the association between NEET status and youth mental health and substance use problems.

Methods

We searched Medline, EMBASE, Web of Science, ERIC, PsycINFO, and ProQuest Dissertations and Theses (1999–2020). Two reviewers extracted data and appraised study quality using a modified Newcastle–Ottawa Scale. We ran robust variance estimation random-effects models for associations between NEET and aggregate groups of mental ill-health and substance use measures; conventional random-effects models for associations with individual mental/substance use problems; and subgroup analyses to explore heterogeneity.

Results

We identified 24 studies from 6,120 references. NEET status was associated with aggregate groups of mental ill-health (OR 1.28, CI 1.06–1.54), substance use problems (OR 1.43, CI 1.08–1.89), and combined mental ill-health and substance use measures (OR 1.38, CI 1.15–1.64). Each disaggregated measure was associated with NEET status [mood (OR 1.43, CI 1.21–1.70), anxiety (OR 1.55, CI 1.07–2.24), behaviour problems (OR 1.49, CI 1.21–1.85), alcohol use (OR 1.28, CI 1.24–1.46), cannabis use (OR 1.62, CI 1.07–2.46), drug use (OR 1.99, CI 1.19–3.31), suicidality (OR 2.84, CI 2.04–3.95); and psychological distress (OR 1.10, CI 1.01–1.21)]. Longitudinal data indicated that aggregate measures of mental health problems and of mental health and substance use problems (combined) predicted being NEET later, while evidence for the inverse relationship was equivocal and sparse.

Conclusion

Our review provides evidence for meaningful, significant associations between youth mental health and substance use problems and being NEET. We, therefore, advocate for mental ill-health prevention and early intervention and integrating vocational supports in youth mental healthcare.

     

Associations between diet quality and DSM-IV mood disorders during young- to mid-adulthood among an Australian cohort

Purpose

Many studies have reported associations between diet and depression, but few have used formal diagnoses of mood disorder as the outcome measure. We examined if overall diet quality was associated cross-sectionally or longitudinally with DSM-IV mood disorders among an adult cohort.

Methods

Participants from the Australian Childhood Determinants of Adult Health study were followed up during 2004–06 (n = 1974, age 26–36 years), 2009–11 (n = 1480, 31–41 years), and 2014–19 (n = 1191, 36–49 years). Dietary Guidelines Index (DGI) scores were calculated from food frequency questionnaires at each time-point (higher DGI reflects better diet quality). DSM-IV mood disorders (dysthymia or depression) during the periods between, and 12 months prior to each follow-up were determined using the Composite International Diagnostic Interview. Sex-stratified risk and prevalence ratios (PR) and 95% confidence intervals (CI) were estimated using log-binomial regression. Covariates included age, self-perceived social support index score, marital status, parenting status, education, occupation, physical activity, BMI, and usual sleep duration.

Results

A 10-point higher DGI was cross-sectionally associated with lower prevalence of mood disorders at the third follow-up only (females PR = 0.73, 95% CI = 0.56, 0.95; males PR = 0.72, 95% CI = 0.53, 0.97), but was attenuated after covariate adjustment (females PR = 0.92, 95% CI = 0.73, 1.16; males PR = 0.92, 95% CI = 0.69, 1.22). Adjustment for social support in the final model had attenuated the association for both sexes from 18% reduced prevalence to 8%. DGI scores were not longitudinally associated with mood disorder risk.

Conclusions

Crude cross-sectional associations between diet quality and mood disorders at ages 36–49 years were explained by sociodemographic and lifestyle factors, particularly social support.

     

Risk factors for posttraumatic epilepsy: A systematic review and meta-analysis

ObjectiveA systematic review and meta-analysis was performed to identify risk factors for posttraumatic epilepsy (PTE).MethodsTwo electronic databases (Medline and Embase) were searched to identify studies with a cohort, case-control, or cross-sectional design reporting on epidemiologic evidence regarding risk factors for PTE.ResultsMen had a higher risk of developing PTE than women [relative ratio (RR), 1.32; 95% confidence interval (CI), 1.10–1.59]. A history of alcohol abuse (RR, 2.18; 95% CI, 1.26–3.79), posttraumatic amnesia (RR, 1.31; 95% CI, 1.12–1.53), focal neurologic signs (RR, 1.42; 95% CI, 1.16–1.74), and loss of consciousness at initial traumatic brain injury (TBI) (RR, 1.62; 95% CI, 1.13–2.32) were associated with a greater risk of PTE. TBI-related abnormal neuroimaging findings, including skull fracture (RR, 2.27; 95% CI, 1.49–3.44), midline shift (RR, 1.46; 95% CI, 1.14–1.87), brain contusion (RR, 2.35; 95% CI, 1.69–3.28), subdural hemorrhage (RR, 2.00; 95% CI, 1.33–3.01), and intracranial hemorrhage (RR, 2.65; 95% CI, 1.83–3.82) were strong risk factors for PTE. The risk of developing PTE after skull fracture, mild brain injury, and severe brain injury peaked within the first year after TBI, and then gradually decreased. However, a high risk of PTE was sustained for > 10 years.ConclusionThe current meta-analysis identified potential risk factors for PTE. The results may contribute to better prevention strategies and treatments for PTE.     

Higher risk of developing major depression and bipolar disorder in later life among adolescents with asthma: A nationwide prospective study

ObjectivePrevious studies have suggested an immunological dysfunction in mood disorders, but rarely have investigated the temporal association between allergic diseases and mood disorders. Using the Taiwan National Health Insurance Research Database, we attempted to investigate the association between asthma in early adolescence and the risk of unipolar depression and bipolar disorder in later life.MethodsIn all, 1453 adolescents with asthma aged between 10 and 15 years and 5812 age-/gender-matched controls were selected in 1998–2000. Subjects with unipolar depression and bipolar disorder that occurred up to the end of follow-up (December 31 2010) were identified.ResultsAdolescents with asthma had a higher incidence of major depression (2.8% vs. 1.1%, p < 0.001), any depressive disorder (6.1% vs. 2.6%, p < 0.001), and bipolar disorder (1.0% vs. 0.3%, p < 0.001) than the control group. Cox regression analysis showed that asthma in early adolescence was associated with an increased risk of developing major depression (hazard ratio [HR]: 1.81, 95% confidence interval [CI]: 1.14–2.89), any depressive disorder (HR: 1.74, 95% CI: 1.27–2.37), and bipolar disorder (HR: 2.27, 95% CI: 1.01–5.07), after adjusting for demographic data and comorbid allergic diseases.DiscussionAdolescents with asthma had an elevated risk of developing mood disorders in later life. Further studies would be required to investigate the underlying mechanisms for this comorbid association and elucidate whether prompt intervention for asthma would decrease the risk of developing mood disorders.     

Early age of onset of mood,anxiety and alcohol use disorders is associated with sociodemographic characteristics and health outcomes in adults: results from a cross-sectional national survey

Purpose

This cross-sectional study investigated distribution, sociodemographic correlates, and health outcomes in early versus late age of onset (AOO) of mood, anxiety, and alcohol use disorders in Singapore.

Methods

The Composite International Diagnostic Interview established lifetime diagnoses of major depressive, bipolar, generalized anxiety, obsessive compulsive and alcohol use disorders in a representative sample of residents aged 18 years and over (n = 6126). The AOO of the individual and any mental disorders were classified into early and late onset using median values as cut-offs. Data included socio-demographic and health background, health utility score, and productivity losses. Multivariable logistic regression analysis was conducted to assess sociodemographic correlates of early versus late AOO of any mental disorder while linear regression analysis investigated the associations between AOO of individual disorders with health utility score and productivity loss.

Results

Respondents’ mean (SD) age was 45.6 (16.5) years, comprising 50.5% women and majority of Chinese ethnicity (75.8%). The median AOO for any of the five studied disorders was 21 years (IQR: 15–29). Lowest AOO was observed for obsessive compulsive disorder (Median: 14, IQR: 11–26). Those aged 35 years and over (versus 18–34) were less likely to have earlier AOO [35–49 years (OR: 0.287; 95% CI: 0.154–0.534); 50–64 years (OR:0.156; 95% CI: 0.068–0.361) and 65 and over (OR:0.112; 95% CI:0.027–0.461)], while Malay ethnicity (versus Chinese) (OR: 2.319; 95% CI: 1.384–3.885) and being never married (versus married) (OR: 2.731; 95% CI: 1.493–4.993) were more likely to have early AOO for any mental disorder. Sample with early (versus late) AOO had a lower health utility score (β =  − 0.06,95% CI: − 0.08 to − 0.03) and higher number of days cut down on the type of work (β = 1.61,95% CI: 0.12–3.10) in those with any mental disorders.

Conclusion

This study showed that half of the adults with mood, anxiety or alcohol use disorders in Singapore experienced their illness onset by 21 years of age. Early AOO is associated with sociodemographic background and poor health outcomes. Prevention, early detection, and interventions to improve health outcomes in mental disorders should consider the sociodemographic profile and age at first onset of symptoms in the population.

     

Mental health of clinical staff working in high-risk epidemic and pandemic health emergencies a rapid review of the evidence and living meta-analysis

Purpose

The SARS-CoV-2 / COVID-19 pandemic has raised concerns about the potential mental health impact on frontline clinical staff. However, given that poor mental health is common in acute medical staff, we aimed to estimate the additional burden of work involving high exposure to infected patients.

Methods

We report a rapid review, meta-analysis, and living meta-analysis of studies using validated measures from outbreaks of COVID-19, Ebola, H1N1 influenza, Middle East respiratory syndrome (MERS), and severe acute respiratory syndrome (SARS).

Results

A random effects meta-analysis found that high-exposure work is not associated with an increased prevalence of above cut-off scoring (anxiety: RR = 1.30, 95% CI 0.87–1.93, Total N = 12,473; PTSD symptoms: RR = 1.16, 95% CI 0.75–1.78, Total N = 6604; depression: RR = 1.50, 95% CI 0.57–3.95, Total N = 12,224). For continuous scoring, high-exposure work was associated with only a small additional burden of acute mental health problems compared to low-exposure work (anxiety: SMD = 0.16, 95% CI 0.02–0.31, Total N = 6493; PTSD symptoms: SMD = 0.20, 95% CI 0.01–0.40, Total N = 5122; depression: SMD = 0.13, 95% CI -0.04–0.31, Total N = 4022). There was no evidence of publication bias.

Conclusion

Although epidemic and pandemic response work may add only a small additional burden, improving mental health through service management and provision of mental health services should be a priority given that baseline rates of poor mental health are already very high. As new studies emerge, they are being added to a living meta-analysis where all analysis code and data have been made freely available: https://osf.io/zs7ne/.

     

Association between mood stabilizers and hypothyroidism in patients with bipolar disorders: a nested,matched case‐control study

Gau C‐S, Chang C‐J, Tsai F‐J, Chao P‐F, Gau SS‐F. Association between mood stabilizers and hypothyroidism in patients with bipolar disorders: a nested, matched case‐control study.
Bipolar Disord 2010: 12: 253–263. © 2010 The Authors.
Journal compilation © 2010 John Wiley & Sons A/S. Objectives: This study investigated whether lithium, carbamazepine, and valproate increased the risk for hypothyroidism using Taiwan’s National Health Insurance Dataset. Methods: The sample included 557 bipolar disorder patients with incident hypothyroidism first diagnosed between 1998 and 2004, and 2,228 sex‐, age‐, and index date‐matched bipolar disorder patients without hypothyroidism from 1996–2004. We compared the use of lithium, carbamazepine, and valproate before the onset of hypothyroidism between the two groups using a conditional logistical regression model. Results: Compared with patients who had never used any of the three mood stabilizers, patients were more likely to have hypothyroidism if they only used carbamazepine [odds ratio (OR) = 1.68; 95% confidence interval (CI): 1.07–2.65]; or comedication of lithium and valproate (OR = 2.40; 95% CI: 1.70–3.40), lithium and carbamazepine (OR = 1.52; 95% CI: 1.10–2.08), and three mood stabilizers (OR = 2.34; 95% CI: 1.68–3.25). There was a dose‐response relationship between the number of mood stabilizers and risk for hypothyroidism (OR = 1.34, 95% CI: 1.21–1.49) and a significant interaction between lithium and valproate on the risk for hypothyroidism (p = 0.020). Conclusions: Our findings indicate that lithium, carbamazepine, and valproate may increase the risk for hypothyroidism, particularly if combined, and suggest regular monitoring of thyroid function and monotherapy of mood stabilizers for treating patients with bipolar disorders.     

Health,social and criminal justice factors associated with dual diagnosis among incarcerated adults in Brazil and Australia: a cross-national comparison

Purpose

To estimate the prevalence of dual diagnosis and identify health, social and criminal justice factors associated with dual diagnosis among incarcerated adults in Australia and Brazil.

Methods

We compared data from cross-sectional surveys of incarcerated adults (aged ≥ 18 years) in Australia and Brazil. Using data from linked emergency department, hospital, and in-prison medical records in the Australian sample, and from the Composite International Diagnostic Interview (CIDI) in the Brazilian sample, participants were categorised as having: (1) no mental disorder; (2) substance use disorder only; (3) mental illness only; or (4) dual diagnosis. A multivariate multinomial logistic regression model was fitted to identify factors associated with dual diagnosis in each country.

Results

Approximately one quarter of participants in both Australia (22%) and Brazil (25%) met the diagnostic criteria for dual diagnosis. In both countries, dual diagnosis was associated with being female [relative risk (RR) = 2.25 (95% CI 1.47–3.43) Australia; RR = 2.59 (95% CI 1.79–3.74) Brazil], having a history of prior incarceration [RR = 2.99 (95% CI 1.99–4.48) Australia; RR = 2.27 (95% CI 1.57–3.29) Brazil], and having comorbid physical health problems [RR = 1.54 (95% CI 1.08–2.19) Australia; RR = 2.53 (95% CI 1.75–3.65) Brazil].

Conclusions

Despite differences in health, social, and criminal justice systems between Australia and Brazil, the prevalence of and factors associated with dual diagnosis in incarcerated adults appear to be similar in the two countries. A number of generalisable principles can be inferred and should be considered in health and criminal justice policy making.

     

BDNF blood levels after electroconvulsive therapy in patients with mood disorders: A systematic review and meta-analysis

Objectives. To evaluate whether electroconvulsive therapy (ECT), a very effective non-pharmacological treatment for mood disorders, induces neurotrophic effects, indexed by the measurement of peripheral brain-derived neurotrophic factor (BDNF) levels. Methods. Systematic review and meta-analysis of clinical trials published in PubMed/Medline from the first date available to October 2013. We included studies measuring pre- and post-BDNF blood levels under ECT in patients with mood disorders in the acute depressive episode. Results. Eleven studies (n = 221 subjects) were eligible. These studies enrolled subjects with unipolar, bipolar and psychotic depression and varied regarding electrode placement (unipolar vs. bipolar) and previous use of pharmacotherapy. Nonetheless, BDNF significantly increased after ECT (Hedges’ g pooled, random-effects model of 0.354; 95% CI = 0.162–0.546). The results were robust according to sensitivity analysis and Begg's funnel plot did not suggest publication bias. Meta-regression results did not show association of the outcome with any clinical and demographic variable, including depression improvement. Conclusions. Our meta-analysis indicates that, similar to pharmacological interventions, peripheral BDNF increases after ECT treatment. The lack of correlation between BDNF increasing and depression improvement suggests that ECT induces neurotrophic effects regardless of clinical response in depression.