Electrochemiluminescence Enhanced by a Non-Emissive Dual Redox Mediator.

A sulfonated tris(1-phenylpyrazolato)iridium(III) complex ([Ir(sppz)3]3-) serves as a proof-of-concept non-emissive enhancer of the widely used ECL detection system of tris(2,2'-bipyridine)ruthenium(II) ([Ru(bpy)3]2+) with tri-n-propylamine (TPrA) co-reactant, acting through electrocatalysis of TPrA oxidation and efficient chemi-excitation of the luminophore. Using self-interference ECL spectroscopy, we show that the enhancer extends diffusion of the required electrogenerated precursors from the electrode surface. Previously reported enhancement through these pathways has been confounded by the inherent ECL of the enhancer, but the increase in [Ru(bpy)3]2+ ECL intensity using [Ir(sppz)3]3- was obtained without its concomitant emission. The most prominent enhancement (11-fold) occurred at low potentials associated with the 'indirect' co-reactant ECL pathway, which translated to between 2- and 6-fold enhancement when the luminophore was immobilised on microbeads as a general model for enhanced ECL assays.

Using Action-congruent Language Facilitates the Motor Response during Action Observation: A Combined Transcranial Magnetic Stimulation and Eye-tracking Study.

There is evidence that action observation (AO) and the processing of action-related words are associated with increased activity in cortical motor regions. Research has examined the effects of AO and action verb processing on activity in the motor system independently. The aim of this experiment was to investigate, for the first time, the modulation of corticospinal excitability and visual attention during the concurrent processing of action verbs and AO stimuli. Twenty participants took part in an integrated transcranial magnetic stimulation and eye-tracking protocol. Single-pulse transcranial magnetic stimulation was delivered to the hand representation of the left motor cortex during (i) observation of a static hand, (ii) AO of a hand squeezing a sponge, (iii) AO of the same action with an audio recording of the word "squeeze," and (iv) AO of the same action with an audio recording of the word "green". Motor evoked potentials were recorded from the abductor pollicis brevis and abductor digiti minimi muscles of the right hand. Eye gaze was recorded throughout the four conditions as a proxy for visual attention. Interviews were conducted to discuss participants' preferences and imagery use for each condition. The AO and action verb condition resulted in significantly increased motor evoked potential amplitudes in the abductor pollicis brevis muscle; participants also made significantly more fixations on the sponge and reported wanting to move their hand more in the action verb condition. The inclusion of auditory action verbs, alongside AO stimuli, in movement simulation interventions could have implications for the delivery of AO interventions for motor (re)learning.

Participation of young women in sexual and reproductive health decision-making in Malawi: Local realities versus global rhetoric.

Despite the global prioritization of addressing adolescent girls' and young women's sexual and reproductive health (SRH) and participatory rights, little research has examined their lived experiences in shaping their engagement in SRH decision-making processes in the global South. Further, few studies have explored how structural and societal factors influence their agency and participation. This critical and focused ethnography, informed by postcolonial feminist and difference-centred citizenship theories, conducted in Malawi (2017-2018) elicited perspectives of youth and key informants to help address these knowledge gaps. Our findings show that the effective implementation and uptake of global discourse on participation and gender equity is hindered by inadequate consideration of girls' and young women's local political, cultural and social realities. Many girls and young women demonstrate passion to participate in SRH policymaking as agents of change. However, patriarchal and gerontocratic political and social structures/institutions, and gendered and adultist norms and practices limit their active and meaningful participation in SRH decision-making. In addition, donors' roles in SRH policymaking and their prioritization of the "girl child" highlight an enduring postcolonial power over agenda-setting processes. Understanding young people's experiences of gendered participation and scrutinizing underlying systemic forces are critical steps toward realizing young women's SRH and participatory rights.

External validation of a surgical mortality risk prediction model for inpatient noncardiac surgery in an Australian private health insurance dataset.

BACKGROUND: We previously conducted a systematic review to identify surgical mortality risk prediction tools suitable for adapting in the Australian context and identified the Surgical Outcome Risk Tool (SORT) as an ideal model. The primary aim was to investigate the external validity of SORT for predicting in-hospital mortality in a large Australian private health insurance dataset. METHODS: A cohort study using a prospectively collected Australian private health insurance dataset containing over 2 million deidentified records. External validation was conducted by applying the predictive equation for SORT to the complete case analysis dataset. Model re-estimation (recalibration) was performed by logistic regression. RESULTS: The complete case analysis dataset contained 161 277 records. In-hospital mortality was 0.2% (308/161277). The mean estimated risk given by SORT was 0.2% and the median (IQR) was 0.01% (0.003%-0.08%). Discrimination was high (c-statistic 0.96) and calibration was accurate over the range 0%-10%, beyond which mortality was over-predicted but confidence intervals included or closely approached the perfect prediction line. Re-estimation of the equation did not improve over-prediction. Model diagnostics suggested the presence of outliers or highly influential values. CONCLUSION: The low perioperative mortality rate suggests the dataset was not representative of the overall Australian surgical population, primarily due to selection bias and classification bias. Our results suggest SORT may significantly under-predict 30-day mortality in this dataset. Given potential differences in perioperative mortality, private health insurance status and hospital setting should be considered as covariables when a locally validated national surgical mortality risk prediction model is developed.

Youth participation in sexual and reproductive health: policy, practice, and progress in Malawi.

OBJECTIVES: Ensuring youth participation in policymaking that affects their health and well-being is increasingly recognized as a strategy to improve young people's reproductive health. This paper aimed to describe the policy context and analyze underlying factors that influence youth participation in sexual and reproductive health (SRH) policymaking in Malawi. METHODS: This critical, focused ethnographic study is informed by postcolonial feminism and difference-centered citizenship theory, based on data collected from October 2017 to May 2018. Multiple research methods were employed: document analysis, focus group discussions, and "moderate" participant observation. Semi-structured interviews were conducted with key informants and youth, supplemented by open-ended drawing exercises with youth. RESULTS: Progressive policies and the presence of youth in some policymaking structures indicate substantial headway in Malawi. However, underlying structural and societal factors circumscribe young people's lived experiences of participation. CONCLUSIONS: Despite recent progress in involving young people in SRH policymaking, notable gaps remain between policy and practice. Recognizing and integrating young people in all stages of SRH policymaking is critical to catalyzing the social and political changes necessary to ensure their reproductive health and well-being.

Validity and reliability of the Iranian version of the quality of recovery-40 questionnaire.

BACKGROUND: Recovery after anesthesia and surgery is a complex process and depends on many factors such as patient, anesthesia and surgery conditions as well pre-existing comorbidities. OBJECTIVES: The aims of this study were to translate the 40-item quality of recovery score (QoR-40) into Persian and evaluate its psychometric properties in Iranian patients. PATIENTS AND METHODS: We enrolled patients candidate for elective general surgery undergoing general anesthesia from July 2013 to December 2013 at Shahid Rajaee Hospital, Qazvin, Iran. Translation was performed based on Beaton's and Bullinger's recommendations. Estimates of internal consistency, test-retest reliability, concurrent validity, predictive validity and clinical validity were performed. RESULTS: All estimates of internal consistency were high (Cronbach's alpha = 0.89 for global estimates, subscales between 0.89 and 0.93). All test-retest scores and subscales were between 0.71 and 0.88.The correlation with a recovery visual analogue scale was 0.51, and all subscales correlated significantly with comparable subscales of the SF-36. An exploratory factor analysis found five-components and explained 52% of the variance. A confirmatory factor analysis based on the five-components, yielded good fit statistics (CFI = 0.93). CONCLUSIONS: Overall, the Persian version of the QoR-40 was both conceptually and linguistically equivalent to the original English QoR-40. This study revealed that the Persian version of the QoR-40 is a valid and reliable instrument to assess the recovery quality in Iranian patients after surgery.