Suicide is a serious public health problem.

To investigate the sociodemographic and clinical features of callers (patients) classed by the Qatar National Mental Health Helpline (NMHH) as moderate to high priority based on the risk of self-harm or suicide during the COVID-19 pandemic.

The study design was a retrospective chart review of patients who contacted the helpline in the first 12 months, starting 1 April 2020. Data of those classed as moderate to high priority based on risk to self were collected using a specifically designed form. Absolute and relative frequencies for each of the studied categorical variables were determined.

Four hundred and ninety-eight patients were included. More than half were female. The mean age was 32 years (range 8–85 years). Two-thirds of patients were from Arab countries and more than half of all patients had contacted mental health services for the first time. The most common symptoms elicited included suicidal thoughts, depressed mood and disturbed sleep. The most common psychiatric disorders were depression and generalised anxiety disorder. Most patients were seen within 4 h and received psychiatric interventions. Virtually all patients received non-pharmacological interventions; only 38.5% received pharmacological interventions. The majority had follow-up appointments arranged with mental health services.

People from the Indian subcontinent and males proportionally approached services less, which may reflect stigma. The NMHH improved access to care for patients considered at risk to self and prevented hospital admissions. The NMHH offers a valuable additional choice to patients and assists in prevention and management of suicidal behaviour and other mental health difficulties.

Lithium has long been recognised as an effective treatment for bipolar disorder. Its relative efficacy has been measured with a diverse range of clinical outcomes, resulting in differences in efficacy reporting that have not been systematically reviewed.

We aimed to identify and compare the various measures of lithium efficacy employed in interventional studies for people with bipolar disorder.

Database (PubMed, Web of Science) and hand searches were performed to identify studies that assessed a clinical response in patients with bipolar disorder who received lithium, up to the end of 2021. We included primary human interventional studies without excluding specific study designs, bipolar disorder subtypes, duration or dosage of lithium treatment. Continuous outcome effects were meta-analysed; binary outcomes were synthesised visually and narratively. The Cochrane risk-of-bias tool was used to assess study-level risk of bias.

Seventy-one studies were included (N = 30 542). Approximately two-thirds of participants attained a clinically significant improvement in manic or depressive symptoms, and over 50% achieved remission. About a third required hospital admission (study length 2–12 years) and around 50% needed further treatment to stay well or had recurrence of symptoms; the latter two outcomes tended to be assessed over long-term maintenance periods.

An abundance of measurements have been used to assess lithium's clinical effects, across several study designs. Despite the resultant high heterogeneity, an overall picture of lithium's effects emerges that supports previous literature; between half and two-thirds of patients respond well to lithium across varying outcome measures, baseline mood states, study durations and bipolar disorder subtypes.

There are no longitudinal studies investigating determinants of incident and persistent depressive symptoms in Southeast Asia.

To estimate the proportion and correlates of incident and persistent depressive symptoms in a prospective cohort study among middle-aged and older adults (≥45 years) in Thailand.

We analysed longitudinal data from the Health, Aging, and Retirement in Thailand (HART) surveys in 2015 and 2017. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale. Logistic regression was used to calculate predictors of incident and persistent depressive symptoms.

In total, 290 of 4528 participants without depressive symptoms in 2015 had incident depressive symptoms in 2017 (9.8%) and 76 of 640 adults had persistent depressive symptoms (in both 2015 and 2017) (18.3%). In adjusted logistic regression analysis, having diabetes (adjusted odds ratio AOR = 1.48, 95% CI 1.07–2.05), musculoskeletal conditions (AOR = 1.56, 95% CI 1.01–2.41) and having three or more chronic conditions (AOR = 2.55, 95% CI 1.67–3.90) were positively associated and higher subjective economic status (AOR = 0.47, 95% CI 0.31–0.72) and social participation (AOR = 0.66, 95% CI 0.49–0.90) were inversely associated with incident depressive symptoms. Having a cardiovascular disease (AOR = 1.55, 95% CI 1.01–2.39) and having three or more chronic conditions (AOR = 2.47, 95% CI 1.07–5.67) were positively associated and social participation (AOR = 0.48, 95% CI 0.26–0.87) was inversely associated with persistent depressive symptoms.

One in ten middle-aged and older adults had incident depressive symptoms at 2-year follow-up. The prevalence of incident and/or persistent depression was higher in people with a lower subjective economic status, low social participation, diabetes, musculoskeletal disorders, cardiovascular conditions and a higher number of chronic diseases.

The research on the role of father in the foetal programming of health and behaviour has received increasing attention. However, the influences of paternal depressive symptoms and couple relationship satisfaction during pregnancy – potentially mediated via maternal well-being – on the offspring's risk of infections in early life is still seldom assessed.

The aim was to investigate if paternal psychological distress during pregnancy is associated with elevated risk of recurrent respiratory infections (RRIs) for offspring at 12 months of age, and whether maternal distress mediates the association between paternal distress and offspring RRIs.

The study population was drawn from the nested case–control cohort of the FinnBrain Birth Cohort Study. Children with RRIs (n = 50) were identified by maternal reports at the age of 12 months, whereas mothers did not report RRIs for the comparison group (n = 716). Parental depressive symptoms were measured with the Edinburgh Postnatal Depression Scale and couple relationship satisfaction was measured with the Revised Dyadic Adjustment Scale.

The association between paternal depressive symptoms during pregnancy and offspring RRIs was mediated by maternal prenatal depressive symptoms. Additionally, paternal poorer relationship satisfaction was associated with child RRIs independently of maternal distress.

The results suggest different pathways through which paternal distress during pregnancy may contribute to elevated risk of offspring RRIs, and more research is needed to study their underlying mechanisms. Paternal distress and couple relationship satisfaction during pregnancy should be assessed and screened as a contributor to offspring health.

Major depressive disorder (MDD) is a serious psychiatric disorder marked by low mood and anhedonia. Understanding the neural mechanism of MDD is essential for the treatment of depression. White matter fibres, connecting different computational units in the brain, have an important effect on brain function; however, the mechanism of white matter fibre abnormality in MDD is still unclear.

Our study expected to find white matter abnormalities associated with the frontal lobe and hippocampus in individuals with MDD.

Using diffusion tensor imaging data and tract-based spatial statistics, we investigated the microstructural differences in white matter fibre tracts between 30 adults with MDD compared with 31 healthy controls, and calculated the association between MDD-related microstructural changes and illness duration.

It was found that patients with MDD showed reduced fractional anisotropy in the genu and body of the corpus callosum, right corona radiata and part of the thalamic radiations, suggesting lower fibrous myelination levels in these regions; the decreased fractional anisotropy in these regions was associated with longer illness duration.

Our results suggest that MDD may be associated with microstructural damage of key fibre tracts, which could provide insights into the understanding and treatment of MDD.