415 research outputs found

    Exploration of the nurse shark (Ginglymostoma cirratum) plasma immunoproteome using high-resolution LC-MS/MS

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    Funding Information: FKB was supported by a BBSRC-funded EASTBIO Doctoral Training Partnership studentship (grant number BB/M010996/1) awarded to HD. HM is supported by NIH-NIAID predoctoral fellowship F31AI147532. DM received institutional strategic funding from the BBSRC (grants: BBS/E/D/10002071 and BBS/E/D/20002174). For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising from this submission. Funding Information: We thank Professor Sam Martin (University of Aberdeen) for supporting the supervision of FKB during her PhD. Our thanks also to Luke Tallon and Lisa Sadzewicz at UMBs Institute for Genome Sciences for helpful advice and sharing their expertise during sequencing of the nurse shark transcriptome. Publisher Copyright: Copyright © 2022 Bakke, Gundappa, Matz, Stead, Macqueen and Dooley.Peer reviewedPublisher PD

    Social fit of coral reef governance varies among individuals

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    Improved natural resource governance is critical for the effective conservation of ecosystems, and the well-being of societies that depend on them. Understanding the social fit of institutional arrangements in different contexts can help guide the design of effective environmental governance. This empirical study assessed individual-level variation in institutional acceptance of coral reef governance among 652 respondents in 12 fishing and tourism-oriented communities in the Wider Caribbean. High institutional acceptance was strongly associated with perceptions of community cohesiveness, underlining the potential contribution of civil society to effective governance processes. Institutional acceptance was also influenced by reef use, awareness of rules, perceived trends in reef fish populations, education, and contextual community-level factors. Understanding what influences diverse perceptions of coral reef governance among individuals can help to assess the likelihood of support for conservation measures. This study highlights how knowledge of institutional acceptance can inform the design of more targeted interventions that enhance the social fit of conservation governance to local contexts and diverse resource users

    High-throughput proteomic profiling of the fish liver following bacterial infection

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    Abstract Background High-throughput proteomics was used to determine the role of the fish liver in defense responses to bacterial infection. This was done using a rainbow trout (Oncorhynchus mykiss) model following infection with Aeromonas salmonicida, the causative agent of furunculosis. The vertebrate liver has multifaceted functions in innate immunity, metabolism, and growth; we hypothesize this tissue serves a dual role in supporting host defense in parallel to metabolic adjustments that promote effective immune function. While past studies have reported mRNA responses to A. salmonicida in salmonids, the impact of bacterial infection on the liver proteome remains uncharacterized in fish. Results Rainbow trout were injected with A. salmonicida or PBS (control) and liver extracted 48 h later for analysis on a hybrid quadrupole-Orbitrap mass spectrometer. A label-free method was used for protein abundance profiling, which revealed a strong innate immune response along with evidence to support parallel rewiring of metabolic and growth systems. 3076 proteins were initially identified against all proteins (n = 71,293 RefSeq proteins) annotated in a single high-quality rainbow trout reference genome, of which 2433 were maintained for analysis post-quality filtering. Among the 2433 proteins, 109 showed significant differential abundance following A. salmonicida challenge, including many upregulated complement system and acute phase response proteins, in addition to molecules with putative functions that may support metabolic re-adjustments. We also identified novel expansions in the complement system due to gene and whole genome duplication events in salmonid evolutionary history, including eight C3 proteins showing differential changes in abundance. Conclusions This study provides the first high-throughput proteomic examination of the fish liver in response to bacterial challenge, revealing novel markers for the host defense response, and evidence of metabolic remodeling in conjunction with activation of innate immunity

    Calretinin is a novel candidate marker for adverse ovarian effects of early life exposure to mixtures of endocrine disruptors in the rat

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    Open Access via Springer Compact Acknowledgements This work was funded by the Ministry of Environment and Food of Denmark, and by a grant from the European Commission 7th Framework Program CONTAMED (Contaminant mixtures and human reproductive health-novel strategies for health impact and risk assessment of endocrine disrupters, grant agreement no.: 215202), as well as the Medical Research Council (UK) (MR/L010011/1 to PAF) and the EU Horizon 2020 project FREIA (Grant Number 825100). We would like to thank Heidi Letting, the Animal facilities at DTU food, and the University of Aberdeen Proteomics Core Facility for their support and assistance in this work.Peer reviewedPublisher PD

    Proteomic comparison of selective breeding and growth hormone transgenesis in fish:Unique pathways to enhanced growth

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    Open Access funded by Biotechnology and Biological Sciences Research CouncilPeer reviewedPublisher PD

    Upper-Room Ultraviolet Light and Negative Air Ionization to Prevent Tuberculosis Transmission

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    Background Institutional tuberculosis (TB) transmission is an important public health problem highlighted by the HIV/AIDS pandemic and the emergence of multidrug- and extensively drug-resistant TB. Effective TB infection control measures are urgently needed. We evaluated the efficacy of upper-room ultraviolet (UV) lights and negative air ionization for preventing airborne TB transmission using a guinea pig air-sampling model to measure the TB infectiousness of ward air. Methods and Findings For 535 consecutive days, exhaust air from an HIV-TB ward in Lima, Perú, was passed through three guinea pig air-sampling enclosures each housing approximately 150 guinea pigs, using a 2-d cycle. On UV-off days, ward air passed in parallel through a control animal enclosure and a similar enclosure containing negative ionizers. On UV-on days, UV lights and mixing fans were turned on in the ward, and a third animal enclosure alone received ward air. TB infection in guinea pigs was defined by monthly tuberculin skin tests. All guinea pigs underwent autopsy to test for TB disease, defined by characteristic autopsy changes or by the culture of Mycobacterium tuberculosis from organs. 35% (106/304) of guinea pigs in the control group developed TB infection, and this was reduced to 14% (43/303) by ionizers, and to 9.5% (29/307) by UV lights (both p < 0.0001 compared with the control group). TB disease was confirmed in 8.6% (26/304) of control group animals, and this was reduced to 4.3% (13/303) by ionizers, and to 3.6% (11/307) by UV lights (both p < 0.03 compared with the control group). Time-to-event analysis demonstrated that TB infection was prevented by ionizers (log-rank 27; p < 0.0001) and by UV lights (log-rank 46; p < 0.0001). Time-to-event analysis also demonstrated that TB disease was prevented by ionizers (log-rank 3.7; p = 0.055) and by UV lights (log-rank 5.4; p = 0.02). An alternative analysis using an airborne infection model demonstrated that ionizers prevented 60% of TB infection and 51% of TB disease, and that UV lights prevented 70% of TB infection and 54% of TB disease. In all analysis strategies, UV lights tended to be more protective than ionizers. Conclusions Upper-room UV lights and negative air ionization each prevented most airborne TB transmission detectable by guinea pig air sampling. Provided there is adequate mixing of room air, upper-room UV light is an effective, low-cost intervention for use in TB infection control in high-risk clinical settings

    Social marketing and healthy eating : Findings from young people in Greece

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    This document is the Accepted Manuscript version. The final publication is available at Springer via http://dx.doi.org/10.1007/s12208-013-0112-xGreece has high rates of obesity and non-communicable diseases owing to poor dietary choices. This research provides lessons for social marketing to tackle the severe nutrition-related problems in this country by obtaining insight into the eating behaviour of young adults aged 18–23. Also, the main behavioural theories used to inform the research are critically discussed. The research was conducted in Athens. Nine focus groups with young adults from eight educational institutions were conducted and fifty-nine participants’ views towards eating habits, healthy eating and the factors that affect their food choices were explored. The study found that the participants adopted unhealthier nutritional habits after enrolment. Motivations for healthy eating were good health, appearance and psychological consequences, while barriers included lack of time, fast-food availability and taste, peer pressure, lack of knowledge and lack of family support. Participants reported lack of supportive environments when deciding on food choices. Based on the findings, recommendations about the development of the basic 4Ps of the marketing mix, as well as of a fifth P, for Policy are proposedPeer reviewe
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