Observation of novel oxygen⋯oxygen interaction in supramolecular assembly of cobalt(iii) Schiff base complexes: a combined experimental and computational study

Structural features of two newly synthesized mononuclear cobalt(iii) complexes have been examined by DFT calculations.

An unusual magnetic response in a π-stacked 66-dia net structure of [4 + 2] copper(ii) cubane

Unusual hysteresis loops with coercivity maximum (∼2000 Oe) at 20 K are observed in a copper(ii) cubane. The apparent anomaly appears due to variation of intercubane π⋯π stacking with thermal energy.

Measuring victim empathy among mentally disordered offenders: validating VERA-2

There are very few, if any, valid and victim-specific situation empathy measures available at present for use with mentally disordered offenders. The aim of this study was to validate a modified version (VERA-2) of the Victim Empathy Response Assessment (VERA) tool which was developed earlier (Young et al., 2008) to enable victim-specific situation empathy measurement in offenders. A total of 55 mentally disordered in-patients residing in a maximum security hospital were assessed on VERA-2 as well as on measures of antisocial personality traits, global affective empathy, violent cognitions, and reported remorse for the index offence. The VERA-2 cognitive and affective empathy scales were negatively correlated with antisocial personality traits and violent cognitions, and positively related to remorse for the index offence. Global affective empathy was positively related to VERA-2 affective empathy. Participants with a history of sexual offending had significantly higher cognitive empathy than other offenders. Acceptance of violence and remorse for the index offence were the best predictors of both cognitive and affective empathy. The findings suggest that the VERA-2 is a valid instrument for measuring victim empathy among mentally disordered offenders, and may prove useful in the context of future risk assessment and outcomes in this population.

Successful repair of iatrogenic inferior vena cava injury during cardiac surgery

Iatrogenic injury to the supra-diaphragmatic inferior vena cava (IVC) is uncommon, but can lead to a potentially complicated situation. Injury to the IVC is encountered usually during re-operative and congenital surgery, but can occur during the course of routine cardiac surgery as well. Depending on the mechanism, injury may involve the anterior or posterior wall of the IVC. A short adherent IVC, redo surgery and female sex are incremental risk factors for injury. Control of bleeding, adequate exposure and prevention of extension of the tear are the important considerations at the time of repair. While a number of management techniques have been reported, we describe a very simple maneuver that allows swift control of bleeding, adequate exposure and minimizes the risk of further extension and a satisfactory repair.

Metaplastic carcinoma of breast

Metaplastic carcinomas of breast are a heterogeneous group of malignant tumours in which part or all of the carcinomatous epithelium is transformed into a nonglandular (metaplastic) growth process. This rare neoplasm usually runs an aggressive course. DOI: http://dx.doi.org/10.3126/jpn.v4i7.10320 Journal of Pathology of Nepal (2014) Vol. 4, 594-596

Cerium oxide nanoparticles prevent apoptosis in primary cortical culture by stabilizing mitochondrial membrane potential

Cerium oxide nanoparticles (CNPs) of spherical shape have unique antioxidant capacity primarily due to alternating + 3 and + 4 oxidation states and crystal defects. Several studies revealed the protective efficacies of CNPs in cells and tissues against the oxidative damage. However, its effect on mitochondrial functioning, downstream effectors of radical burst and apoptosis remains unknown. In this study, we investigated whether CNPs treatment could protect the primary cortical cells from loss of mitochondrial membrane potential (Δψm) and Δψm-dependent cell death. CNPs with spherical morphology and size range 7-10 nm were synthesized and utilized at a concentration of 25 nM on primary neuronal culture challenged with 50 μM of hydrogen peroxide (H2O2). We showed that optimal dose of CNPs minimized ROS content of the cells and also curbed related surge in cellular calcium flux. Importantly, CNPs treatment prevented apoptotic loss of cell viability. Reduction in the apoptosis could be successfully attributed to the maintenance of Δψm and restoration of major redox equivalents NADH/NAD(+) ratio and cellular ATP. These findings, therefore, suggest possible route of CNPs protective efficacies in primary cortical culture.

Infection control in households of drug-resistant tuberculosis patients co-infected with HIV in Mumbai, India

BACKGROUND

Mumbai has a population of 21 million, and an increasingly recognised epidemic of drug-resistant tuberculosis (DR-TB).

OBJECTIVE

To describe TB infection control (IC) measures implemented in households of DR-TB patients co-infected with the human immunodeficiency virus (HIV) under a Médecins Sans Frontières programme.

METHODS

IC assessments were carried out in patient households between May 2012 and March 2013. A simplified, standardised assessment tool was utilised to assess the risk of TB transmission and guide interventions. Administrative, environmental and personal protective measures were tailored to patient needs.

RESULTS

IC assessments were carried out in 29 houses. Measures included health education, segregating sleeping areas of patients, improving natural ventilation by opening windows, removing curtains and obstacles to air flow, installing fans and air extractors and providing surgical masks to patients for limited periods. Environmental interventions were carried out in 22 houses.

CONCLUSIONS

TB IC could be a beneficial component of a comprehensive TB and HIV care programme in households and communities. Although particularly challenging in slum settings, IC measures that are feasible, affordable and acceptable can be implemented in such settings using simplified and standardised tools. Appropriate IC interventions at household level may prevent new cases of DR-TB, especially in households of patients with a lower chance of cure.

Hemomediastinum due to spontaneous rupture of a mediastinal bronchial artery aneurysm - A rare cause of thoracic pain

Hemomediastinum is a rare pathological event. Multiple underlying causes and contributory factors can be identified, such as trauma, malignancy, iatrogenic, bleeding disorder or mediastinal organ hemorrhage. Also, a mediastinal bronchial artery aneurysm may be the source of a hemomediastinum. Hemoptysis is an important directive symptom, however occasionally, patients only present with thoracic pain or symptoms related to extrinsic compression of the airways or esophagus. Using contrast-enhanced computed tomography (CT) of the chest, hemomediastinum can be adequately diagnosed, and the involved vascular structures can be revealed. In case of a (ruptured) bronchial artery aneurysm, transcatheter embolization provides a minimally invasive procedure and is treatment of first choice. In this case report, a 76-year-old female is presented with spontaneous rupture of a mediastinal bronchial artery aneurysm resulting in hemomediastinum causing thoracic pain. Superselective embolization of the left bronchial artery was successfully performed.

Novel tandem synthesis of bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex via [3 + 2] cyclo-addition at ambient condition

A bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex was synthesized via [3 + 2] cycloaddition reaction of 2-cyanopyrazine and sodium azide.