461 results match your criteria: "School of Science and the Environment[Affiliation]"

Allergic rhinitis is an inflammation in the nose caused by overreaction of the immune system to allergens in the air. Managing allergic rhinitis symptoms is challenging and requires timely intervention. The following are major questions often posed by those with allergic rhinitis: How should I prepare for the forthcoming season? How will the season's severity develop over the years? No country yet provides clear guidance addressing these questions.

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Effects of beer based marinades on the plasmalogen content and composition of grilled ruminant meats.

J Food Drug Anal

March 2021

School of Science and the Environment/Boreal Ecosystem Research Initiative, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada.

Plasmalogens are important phospholipids essential for maintaining cardiovascular and brain health. Ruminant meats are excellent dietary sources of plasmalogens. Globally, grilling remains a popular technique for preparing meats.

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Grass (Poaceae) pollen is the most important outdoor aeroallergen, exacerbating a range of respiratory conditions, including allergic asthma and rhinitis ("hay fever"). Understanding the relationships between respiratory diseases and airborne grass pollen with a view to improving forecasting has broad public health and socioeconomic relevance. It is estimated that there are over 400 million people with allergic rhinitis and over 300 million with asthma, globally, often comorbidly.

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Host-microbe interactions play crucial roles in marine ecosystems. However, we still have very little understanding of the mechanisms that govern these relationships, the evolutionary processes that shape them, and their ecological consequences. The holobiont concept is a renewed paradigm in biology that can help to describe and understand these complex systems.

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A significant number of Baka Pygmies in Cameroon have been sedentarised in roadside villages, in contrast to their nomadic hunter-gatherer existence of the past. Although this change in lifestyle has had important consequences on health, most Baka villages still supplement their diets from forest products, especially wild meat. We used a combination of participatory methods and monitoring of individual hunters to map hunting territories in 10 Baka villages in southeastern Cameroon.

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Background: The chemical composition of Handal ( L.) seed oil cultivated in Jordan deserts was characterized, and its bioactivity was evaluated.

Methods: The oil was extracted from the grinded seeds in 500 ml Soxhlet extractor for 24 hr using n-hexane, and the recovered fatty acids were methylated with methanolic-HCL.

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Policy Responses to the COVID-19 Pandemic in Vietnam.

Int J Environ Res Public Health

January 2021

Department of Environmental Science, St. John's Campus, Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada.

The COVID-19 pandemic has become one of the most serious health crises in human history, spreading rapidly across the globe from January 2020 to the present. With prompt and drastic measures, Vietnam is one of the few countries that has largely succeeded in controlling the outbreak. This result is derived from a harmonious combination of many factors, with the policy system playing a key role.

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In this study, polybrominated and mixed halogenated dibenzo-p-dioxins and furans (PBDD/Fs and PXDD/Fs), and dioxin-like polychlorinated biphenyls (dlPCBs) were quantified in 24 human milk samples of first-time lactating mothers from Greater Accra region in Ghana. The aims of the study were to determine the concentrations and toxic equivalent concentrations of PBDD/F, PXDD/F and dlPCBs in human milk, and to estimate an infant's daily intake. The samples were analysed for 12 dioxin-like PCBs, 7 congeners of 2,3,7,8-polybrominated dibenzo-p-dioxins and furans (PBDD/Fs), and 7 congeners of 2,3,7,8-mixed halogenated dioxins and furans (PXDD/Fs, where X = Br/Cl).

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Vegetation degradation, due to climate change and human activities, changes the biomass, vegetation species composition, and soil nutrient input sources and thus affects soil nutrient cycling and enzyme activities. However, few studies have focused on the responses of soil nutrients and enzymes to vegetation degradation in high-altitude wet meadows. In this study, we examined the effects of vegetation degradation on soil nutrients (soil organic carbon, SOC; total nitrogen, TN; total phosphorus, TP) and enzyme activities (i.

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Article Synopsis
  • Increasing allergies from airborne pollen and pollutants are affecting life quality in industrialized nations.
  • The WRF-Chem model, which combines weather data with atmospheric chemistry, was used to analyze birch pollen concentrations in Central Europe for two seasons (2015 and 2016).
  • The model performed well in 2015 but struggled in 2016, indicating the need to adjust seasonal pollen emissions to enhance accuracy in predicting allergy symptoms.
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Background: Forest inhabitants worldwide, and indigenous people especially, have depended for generations on plants and animals harvested in these ecosystems. A number of Baka hunter-gatherer populations in south-eastern Cameroon became sedentarised in the 1950s, but still rely on hunting and gathering to meet their basic needs. The use of wild edible plants (WEP) by these communities remains largely undocumented.

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Recent advances in bio-chemical, molecular and physiological aspects of membrane lipid derivatives in plant pathology.

Plant Cell Environ

January 2021

School of Science and the Environment/Boreal Ecosystem Research Facility, Memorial University of Newfoundland, Corner Brook, Newfoundland and Labrador, A2H5G4, Canada.

Plant pathogens pose a significant threat to the food industry and food security accounting for 10-40% crop losses annually on a global scale. Economic losses from plant diseases are estimated at $300B for major food crops and are associated with reduced food availability and accessibility and also high food costs. Although strategies exist to reduce the impact of diseases in plants, many of these introduce harmful chemicals to our food chain.

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This article presents the associated data set in the research article entitled "Assessing beer-based marinades effects on ether and ester linked phosphatidylcholines and phosphatidylethanolamines in grilled beef and moose meat" published in [1], demonstrating the use of unfiltered beer-based marinades in improving the nutritional quality of grilled ruminant meat by suppressing the degradation of health-promoting ester and ether-linked PC and PE the most predominant glycerophospholipids (GPL) in meat. High throughput lipidomics analysis was conducted using high-resolution accurate mass tandem mass spectrometry (UHPLC-HRAMS/MS-MS) to profile the meat lipids following marination and grilling. The marinades were composed of a combination of unfiltered beers, fruits, herbs and spices.

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Use of an anti-CD200-blocking antibody improves immune responses to AML in vitro and in vivo.

Br J Haematol

April 2021

Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK.

Treatment of relapsed/resistant acute myeloid leukaemia (AML) remains a significant area of unmet patient need, the outlook for most patients remaining extremely poor. A promising approach is to augment the anti-tumour immune response in these patients; most cancers do not activate immune effector cells because they express immunosuppressive ligands. We have previously shown that CD200 (an immunosuppressive ligand) is overexpressed in AML and confers an inferior overall survival compared to CD200low/neg patients.

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Wild meat hunting and use by sedentarised Baka Pygmies in southeastern Cameroon.

PeerJ

September 2020

Department of Natural Sciences, School of Science and the Environment, Manchester Metropolitan University, Manchester, United Kingdom.

As a result of sedentarisation many Baka Pygmies have changed their mobility patterns away from nomadic lifestyles to living in roadside villages. These settled groups are increasingly dependent on cultivated foods but still rely on forest resources. The level of dependence on hunting of wild animals for food and cash, as well as the hunting profiles of sedentarised Pygmy groups is little known.

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Carbon Nanotubes Improved the Germination and Vigor of Plant Species from Peatland Ecosystem Via Remodeling the Membrane Lipidome.

Nanomaterials (Basel)

September 2020

School of Science and the Environment/Boreal Ecosystem Research Facility, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G5, Canada.

Application of the nanopriming technique to alleviate seed dormancy has shown promising results in various agricultural crop species. However, there is a dearth of knowledge regarding its potential use in native peatland boreal forest species to alleviate seed dormancy and improve their propagation or vigor for forest reclamation activities. Herein, we demonstrate the use of nanopriming with carbon nanotubes (CNT) to alleviate seed dormancy, improved seed germination, and seedling vigor in two boreal peatland species.

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Indigenous Peoples' lands cover over one-quarter of Earth's surface, a significant proportion of which is still free from industrial-level human impacts. As a result, Indigenous Peoples and their lands are crucial for the long-term persistence of Earth's biodiversity and ecosystem services. Yet, information on species composition on these lands globally remains largely unknown.

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Assessing unfiltered beer-based marinades effects on ether and ester linked phosphatidylcholines and phosphatidylethanolamines in grilled beef and moose meat.

Meat Sci

January 2021

School of Science and the Environment/Boreal Ecosystem Research Initiative, Grenfell Campus, Memorial University of Newfoundland, Corner Brook, NL A2H 5G4, Canada. Electronic address:

Ruminant meats contain ester and ether-linked phosphatidylcholines-(PC) and phosphatidylethanolamines-(PE) enriched with ω3 and ω6 polyunsaturated fatty acids-(PUFA) essential for human health and nutrition. Oxidative degradation of these lipids during grilling compromises meat quality and safety. The effect of marinades containing unfiltered session ales, herbs and spices on these lipids in grilled beef and moose meat was investigated in current study.

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Background: Little is known about how maternal obesity impacts breast milk (BM) composition and how BM composition may impact growth. We sought to determine the role of maternal body mass index (BMI) on BM inflammatory and oxidative stress markers and to delineate the role of these BM markers on infant growth.

Methods: This was a secondary analysis of 40 mother-infant dyads.

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Aim: To investigate the transcription of selected antioxidants and relevant genes under varying temperature conditions, and to identify the optimum temperature for antioxidants production by Arthrospira platensis.

Methods And Results: The dry weight (DW), pigment production, antioxidants production and gene transcription were examined in A. platensis growing under three temperatures of 23, 30 and 37°C.

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Article Synopsis
  • Root membrane lipids play a crucial role in helping plants adapt to various environmental conditions and can be used as biomarkers to differentiate between silage-corn genotypes with different resistance traits against herbicides and pests.
  • The study analyzed lipid compositions in silage-corn roots using advanced mass spectrometry techniques, identifying groups of lipids that effectively separated the genotypes based on their genetic traits like VT Double Pro and Roundup Ready-2 corn.
  • Through data analysis methods like partial least squares-discriminant analysis, five silage-corn genotypes were categorized into three distinct groups, showcasing the potential of lipidomics in agricultural research for optimizing crop resilience in boreal climates.
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Dairy polar lipids (PL) seem to exhibit antiplatelet effects. However, it is not known what molecular species may be responsible. In this study, we confirmed using C30 reversed-phase (C30RP) ultra-high-performance liquid chromatography (UHPLC) coupled to high resolution accurate mass tandem mass spectrometry (HRAM-MS/MS) that fermentation of yoghurts from ovine milk using specific starter cultures altered the PL composition.

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Earlier springs enable high-Arctic wolf spiders to produce a second clutch.

Proc Biol Sci

June 2020

Natural Resources Canada, Canadian Forest Service - Atlantic Forestry Centre, 26 University Drive, PO Box 960, Corner Brook, NL, Canada A2H 6J3.

Spiders at southern latitudes commonly produce multiple clutches, but this has not been observed at high latitudes where activity seasons are much shorter. Yet the timing of snowmelt is advancing in the Arctic, which may allow some species to produce an additional clutch. To determine if this is already happening, we used specimens of the wolf spider caught by pitfall traps from the long-term (1996-2014) monitoring programme at Zackenberg, NE Greenland.

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The average fatty acid (FA) composition of canola oil is made up of 62% oleic acid (C18:1n9), 19% linoleic acid (C18:2n6), 9% linolenic acid (C18:3n3) and 7% saturated FA (SFA). We investigated whether boreal climate (7.5-17.

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and Ripening Modulate Vivipary during Tomato Fruit Development.

Plant Physiol

August 2020

Research Centre for Plant RNA Signaling and Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China

Vivipary, wherein seeds germinate prior to dispersal while still associated with the maternal plant, is an adaptation to extreme environments. It is normally inhibited by the establishment of dormancy. The genetic framework of vivipary has been well studied; however, the role of epigenetics in vivipary remains unknown.

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