Development and comparison of genome detection assays for the diagnosis of foot-and-mouth disease suspected clinical samples

Detection of foot-and-mouth disease virus (FMDV) from clinical specimens by conventional sandwich enzyme-linked immunosorbent assay (ELISA) and virus isolation in cell culture is often compromised owing to limited sensitivity and inactivation during transit, respectively. A RT-PCR (oligoprobing) ELISA in both solid and aqueous phase hybridization formats targeting an across serotype conserved site at 3C-3D region was developed and its effectiveness was compared with that of the known targets at the IRES region. A non-isotopic RNA dot hybridization assay with colorimetric detection targeting both the IRES and the 3D region were also validated, which is capable of handling high throughput samples with ease. RT-PCR (oligoprobing) ELISA and dot hybridization assay showed 1000- and 10-fold greater sensitivity than the sandwich ELISA, respectively. Robustness of these diagnostic methods was explored by examining on sandwich ELISA-negative clinical samples. Both the assays developed in the present study were able to detect viral genomes in samples undetectable by conventional ELISA, thereby demonstrating 'proof of sensitivity'. Although the potential of these assays for providing definitive diagnosis in carrier hosts and in species where clinical disease is inapparent remains to be examined, nevertheless these assays can be adapted for comprehensive surveillance of foot-and-mouth disease in India.     

Intramuscular interstitial amyloid deposition does not impact anoctaminopathy-5 phenotype

Introduction: Recessive mutations in the anoctamin-5-encoding gene (ANO5) cause muscular dystrophy of various phenotypes. Intramuscular interstitial amyloid deposits were detected in a few patients with anoctaminopathy-5, some with cardiac involvement. The frequency of amyloid deposition in anoctaminopathy-5 and its impact on phenotype are unknown. Methods: We retrospectively identified patients with genetically proven anoctaminopathy-5 who had undergone muscle biopsy and reviewed their clinical and laboratory data. Results: Eight of 15 patients with anoctaminopathy-5 had intramuscular interstitial amyloid deposits. The median age at onset of weakness was 40 and 45 years in the amyloidosis and nonamyloidosis groups, respectively. Mutations occurred throughout the entire gene in the amyloidosis group. Atrial arrhythmia was noted in 4 patients with amyloidosis and in 4 patients without amyloidosis. The latter group also had premature ventricular contractions. One nonamyloidosis patient had septal hypokinesia. Discussion: Intramuscular amyloidosis occurred in 53% of patients with anoctaminopathy-5 who underwent muscle biopsy and had no impact on the phenotype. Muscle Nerve 59 :133–137, 2019     

Understanding interaction effect of arbuscular mycorrhizal fungi in rice under elevated carbon dioxide conditions

Arbuscular mycorrhizal fungi (AMF), particularly the Glomerales group, play a paramount role in plant nutrient uptake, and abiotic and biotic stress management in rice, but recent evidence revealed that elevated CO₂ concentration considerably reduces the Glomerales group in soil. In view of this, the present study was initiated to understand the interaction effect of native Glomerales species application in rice plants (cv. Naveen) under elevated CO₂ concentrations (400 ± 10, 550 ± 20, and 700 ± 20 ppm) in open‐top chambers. Three different modes of application of the AMF inoculum were evaluated, of which, combined application of AMF at the seedling production and transplanting stages showed increased AMF colonization, which significantly improved grain yield by 25.08% and also increased uptake of phosphorus by 18.2% and nitrogen by 49.5%, as observed at 700‐ppm CO₂ concentration. Organic acids secretion in rice root increased in AMF‐inoculated plants exposed to 700‐ppm CO₂ concentration. To understand the overall effect of CO₂ elevation on AMF interaction with the rice plant, principal component and partial least square regression analysis were performed, which found both positive and negative responses under elevated CO₂ concentration.     

Giant Left and Right Atrium in Rheumatic Mitral Stenosis and Tricuspid Regurgitation

Dilation of atria occurs in patients with valvular heart disease, especially in rheumatic mitral regurgitation, mitral stenosis, or tricuspid valve abnormalities. We report a case of giant left and right atrium in the context of rheumatic mitral stenosis and severe tricuspid regurgitation in a 68-year-old woman.     

Effects of the inhibition of cytosolic phospholipase A<Subscript>2</Subscript>α in non-small cell lung cancer cells

Purpose  

The aim of this study was to investigate the expression of cPLA₂α in non-small lung cancer cell lines and tissues, and we sought to determine the in vitro effects of the pyrrolidine-2 inhibitor on cPLA₂α sensitivity in three different non-small lung cancer cell lines.     

p53-dependent and p53-independent anticancer effects of different histone deacetylase inhibitors

Background:

Histone deacetylase inhibitors (HDACi) are promising antineoplastic agents, but their precise mechanisms of actions are not well understood. In particular, the relevance of p53 for HDACi-induced effects has not been fully elucidated. We investigated the anticancer effects of four structurally distinct HDACi, vorinostat, entinostat, apicidin and valproic acid, using isogenic HCT-116 colon cancer cell lines differing in p53 status.

Methods:

Effects were assessed by MTT assay, flow-cytometric analyses of propidium iodide uptake, mitochondrial depolarisation and cell-cycle distribution, as well as by gene expression profiling.

Results:

Vorinostat was equally effective in p53 wild-type and null cells, whereas entinostat was less effective in p53 null cells. Histone deacetylase inhibitors treatment suppressed the expression of MDM2 and increased the abundance of p53. Combination treatments showed that vorinostat enhanced the cytotoxic activity of TRAIL and bortezomib, independent of the cellular p53 status. Investigations into the effects of an inhibitor of the sirtuin class of HDAC, tenovin-1, revealed that tenovin-1-mediated cell death hinged on p53.

Conclusion:

These results demonstrate that vorinostat activates p53, but does not require p53 for inducing its anticancer action. Yet they also demonstrate that entinostat-induced cytotoxic effects partially depend on p53, indicating that different HDACi have a different requirement for p53.     

A participatory program evaluation of a systems change program to improve access to information technology by people with disabilities

Purpose.?To pilot-test and evaluate an innovative program providing information technology (IT) access to people with disabilities transitioning out of nursing homes into the community using a participatory approach.

Methods.?Pre- and post-training data was collected on the 61 program participants to reflect three broad areas related to the IT training experience: performance; self-efficacy; importance, satisfaction and control. Additionally, semi-structured interviews were conducted with seven participants and five members of the program staff to explore environmental barriers to IT access for this group and the efficacy of the program in addressing these barriers. Data analyses followed a mixed methods approach incorporating both qualitative and quantitative techniques.

Results.?Participants showed substantive changes in different spheres of IT use after completion of training. Post-training changes were significant particularly in areas related to self-efficacy, importance and satisfaction pertaining to use of IT. Qualitative findings substantiated the quantitative results and also revealed the numerous barriers to IT access that persons with disabilities continue to face within their communities.

Conclusion.?Results indicate the feasibility, effectiveness and value of IT access to people with disabilities particularly those transitioning from institutional life to community living. Further action research aimed at increasing IT access for this group within local communities and neighborhoods is needed to address this issue at a broader societal level.