Quantitative Trait Loci Associated with the "Shade Avoidance" Type Response in A. thaliana when Grown under Oscillating Daily Summer Temperatures

A poster discussing "shade avoidance" in A. thaliana plants

Vaccination with NS1-Truncated H3N2 Swine Influenza Virus Primes T Cells and Confers Cross-Protection against an H1N1 Heterosubtypic Challenge in Pigs

The diversity of contemporary swine influenza virus (SIV) strains impedes effective immunization of swine herds. Mucosally delivered, attenuated virus vaccines are one approach with potential to provide broad cross-protection. Reverse genetics-derived H3N2 SIV virus with truncated NS1 (NS1Δ126 TX98) is attenuated and immunogenic when delivered intranasally in young pigs. We analyzed T-cell priming and cross-protective efficacy in weanling piglets after intranasal inoculation with NS1Δ126 TX98 versus wild type TX98. In vivo replication of the truncation mutant was minimal compared to the wild type virus. T-cell responses were greater in magnitude in pigs infected with the wild type virus in in vitro restimulation assays. According to the expression of activation marker CD25, peripheral T cell recall responses in NS1Δ126 TX98 infected pigs were minimal. However, intracellular IFN-γ data indicate that the attenuated virus induced virus-specific CD4+CD8–, CD4+CD8+, CD4–CD8+, and γδ T cells within 28 days. The IFN-γ response appeared to contract, as responses were reduced at later time points prior to challenge. CD4+CD8+ cells isolated 5 days after heterosubtypic H1N1 challenge (day 70 overall) showed an elevated CD25 response to virus restimulation. Pigs previously infected with wild type TX98 were protected from replication of the H1N1 challenge virus. Vaccination with NS1Δ126 TX98 was associated with significantly lower levels of Th1-associated cytokines in infected lungs but provided partial cross-protection against the H1N1 challenge. These results demonstrate that NS1Δ SIV vaccines can elicit cell-mediated cross-protection against antigenically divergent strains

2017 Research & Innovation Day Program

A one day showcase of applied research, social innovation, scholarship projects and activities.https://first.fanshawec.ca/cri_cripublications/1004/thumbnail.jp

Extracorporeal Membrane Oxygenation in Pregnant and Postpartum Women:A Systematic Review and Meta-Regression Analysis

Background: Although extracorporeal membrane oxygenation (ECMO) is frequently utilized as a salvage therapy for patients with cardiopulmonary failure, outcomes of its use in peripartum patients have not been clearly established. We aimed to review peer-reviewed publications on the use of ECMO in pregnant and postpartum patients, with analyses of maternal and fetal outcomes. Methods: Data were retrieved from MEDLINE, EMBASE, and Scopus databases from 1972 up to November 2017 for publications on ECMO in peripartum patients. Search terms included "ECMO," "ECLS,", "pregnancy," "postpartum," and "peripartum." Publications with 3 or more patients were reviewed for quality using the Joanna Briggs Institute checklist for prevalence studies and case series. Results: After reviewing 143 publications, 9 observational studies met our inclusion criteria. Pooled prevalence of maternal survival was 77.2% (95% confidence interval [CI]: 64.1%-88.4%). Pooled prevalence of fetal survival was 69.1% (95% CI: 44.7%-89.8%). The level of heterogeneity across studies was low for both outcomes. Meta-regression did not reveal any correlation between pregnant women with pulmonary or cardiac indications and maternal survival. Individual patient data meta-regression demonstrated higher odds of survival for patients on venovenous ECMO compared to those on venoarterial ECMO that was close to statistical significance (odds ratio = 3.016, 95% CI: 0.901-11.144; P = .081) after adjusting for pregnancy status. Conclusions: Extracorporeal membrane oxygenation can be considered as an acceptable salvage therapy for pregnant and postpartum patients with critical cardiac or pulmonary illness

Combining oxime-based [Mn6] clusters with cyanometalates:1D chains of [Mn6] SMMs from [M(CN)2](-) (M = Au, Ag)

The linear [M(CN)(2)](-) (M = Au, Ag) anions can be used as metalloligands in oxime-based Mn chemistry to afford 1D chains of [Mn-III (6)] single-molecule magnets (SMMs)

Combining oxime-based [Mn6] clusters with cyanometalates:1D chains of [Mn6] SMMs from [M(CN)2](-) (M = Au, Ag)

et al.The linear [M(CN)2]- (M = Au, Ag) anions can be used as metalloligands in oxime-based Mn chemistry to afford 1D chains of [Mn III 6] single-molecule magnets (SMMs). © 2014 The Royal Society of Chemistry.We thank MINECO (MAT2012-38318-C03), the EC for a Marie Curie-IEF to GL (PIEF-GA-2011-299356) and the EPSRC.Peer Reviewe

Vaccination with NS1-Truncated H3N2 Swine Influenza Virus Primes T Cells and Confers Cross-Protection against an H1N1 Heterosubtypic Challenge in Pigs

The diversity of contemporary swine influenza virus (SIV) strains impedes effective immunization of swine herds. Mucosally delivered, attenuated virus vaccines are one approach with potential to provide broad cross-protection. Reverse genetics-derived H3N2 SIV virus with truncated NS1 (NS1Δ126 TX98) is attenuated and immunogenic when delivered intranasally in young pigs. We analyzed T-cell priming and cross-protective efficacy in weanling piglets after intranasal inoculation with NS1Δ126 TX98 versus wild type TX98. In vivo replication of the truncation mutant was minimal compared to the wild type virus. T-cell responses were greater in magnitude in pigs infected with the wild type virus in in vitro restimulation assays. According to the expression of activation marker CD25, peripheral T cell recall responses in NS1Δ126 TX98 infected pigs were minimal. However, intracellular IFN-γ data indicate that the attenuated virus induced virus-specific CD4+CD8–, CD4+CD8+, CD4–CD8+, and γδ T cells within 28 days. The IFN-γ response appeared to contract, as responses were reduced at later time points prior to challenge. CD4+CD8+ cells isolated 5 days after heterosubtypic H1N1 challenge (day 70 overall) showed an elevated CD25 response to virus restimulation. Pigs previously infected with wild type TX98 were protected from replication of the H1N1 challenge virus. Vaccination with NS1Δ126 TX98 was associated with significantly lower levels of Th1-associated cytokines in infected lungs but provided partial cross-protection against the H1N1 challenge. These results demonstrate that NS1Δ SIV vaccines can elicit cell-mediated cross-protection against antigenically divergent strains.This article is from Vaccine 30 (2012): 280, doi:10.1016/j.vaccine.2011.10.098.</p