Elevated plasma matrix metalloproteinases associate with Mycobacterium tuberculosis blood stream infection and mortality in HIV-associated tuberculosis.

Mortality from HIV-associated tuberculosis (HIV-TB) is high, particularly among hospitalised patients. In 433 people living with HIV admitted to hospital with symptoms of TB, we investigated plasma matrix metalloproteinases (MMP) and matrix-derived biomarkers in relation to TB diagnosis, mortality and Mycobacterium tuberculosis (Mtb) blood stream infection (BSI). Compared to other diagnoses, MMP-8 was elevated in confirmed TB and in Mtb-BSI, positively correlating with extracellular matrix breakdown products. Baseline MMP-3, -7, -8, -10 and procollagen III N-terminal propeptide (PIIINP) associated with Mtb-BSI and 12-week mortality. These findings implicate MMP dysregulation in pathophysiology of advanced HIV-TB and support MMP inhibition as a host-directed therapeutic strategy for HIV-TB.

Validated tools to identify common mental disorders in the perinatal period: A systematic review of systematic reviews.

BACKGROUND: Uncertainty remains regarding the validity of screening tools to detect common mental disorders (CMDs) during perinatal periods. This umbrella review aims to provide an up-to-date summary of psychometric properties of tools for the identification of perinatal CMDs. METHODS: Reviews were identified via Ovid MEDLINE, PsychINFO, EMBASE, Global Health and Cochrane Database of Systematic Reviews electronic databases with no date or language restriction. Pooled sensitivity and specificity estimates and ranges were extracted and summarised using forest plots. Quality assessment was conducted using Measurement Tool to Assess Systematic Reviews (AMSTAR-2). RESULTS: Of 7,891 papers identified, 31 reviews met inclusion criteria. 76 screening tools were identified; most frequently validated were Edinburgh Postnatal Depression Scale (EPDS) (n = 28 reviews), Beck's Depression Inventory (BDI) (n = 13 reviews) and Patient Health Questionnaire (PHQ) (n = 12 reviews). Forest plots demonstrated a pattern of decreasing sensitivity and increasing specificity with increasing cut-off scores. Sub-group analysis of data extracted from low quality reviews demonstrated wider 95% CIs and overall lower specificity. Validity also varied according to ethnicity, socio-economic background and age. LIMITATIONS: Despite a low Covered Corrected Area (CCA) score the primary studies included within reviews overlapped; therefore we were unable perform meta-analysis. CONCLUSIONS: The evidence suggests that the EPDS, PHQ and BDI are useful across a range of diverse settings but the context of tool application is a key factor determining validity. This review highlights that utilizing screening tools in clinical practice is complex and requires careful consideration of the population, context, and health system it will be used in.

Trends in caesarean section rates between 2007 and 2013 in obstetric risk groups inspired by the Robson classification: results from population-based surveys in a low-resource setting.

OBJECTIVE: To describe caesarean section rates and neonatal mortality to assess change in access to life-saving interventions in a rural low-resource setting between 2007 and 2013. DESIGN: Population-based cross-sectional study. SETTING: Southern Tanzania. POPULATION: A total of 34 063 women from 384 549 households who gave birth in the previous year. METHODS: Using data collected in two geo-referenced household surveys conducted in 2007 and 2013 in the context of two cluster-randomized controlled trials, we describe trends in caesarean section and neonatal mortality in obstetric risk groups inspired by the 10-group Robson classification. MAIN OUTCOME MEASURES: Rates of self-reported birth by caesarean section and neonatal mortality. RESULTS: Population-based caesarean section rates increased from 4.0% in 2007 to 6.4% in 2013. In 2013, the lowest caesarean section rate was found in multipara whose labour was not induced or augmented [4.4%, 95% confidence interval (CI) 3.9-4.9], a group that showed a rate increase of over 50% from 2007 [adjusted prevalence ratio 1.57 (95% CI 1.34-1.82)]. Nullipara whose labour was not induced or augmented had rates of 6.2% in 2007 and 8.5% in 2013. Caesarean rates in multiple pregnancies were low at 8.1% (95% CI 5.6-10.5) in 2007, and 14.6% (95% CI 9.4-19.8) in 2013. Overall neonatal mortality was high: 3.5% in 2007 and 3.2% in 2013, with rates being lowest in multiparous women whose labour was not induced or augmented: 2.4% (95% CI 2.2-2.7) and 1.7% (95% CI 1.4-2.0) in 2007 and 2013, respectively. CONCLUSION: Although use of caesarean section remains insufficient, and higher rates do not necessarily imply better quality of care, our analysis highlights improvements in reaching women with caesarean section. Rates in multiple birth remained low compared with high-income settings. TWEETABLE ABSTRACT: In Southern Tanzania caesarean section rates increased over time, but the rate in high-risk births remained alarmingly low.