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1.
Digit Health ; 10: 20552076241258390, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38840659

RESUMEN

Objective: To assess the experience of virtual care among both patients and physicians across a range of clinical scenarios during the COVID-19 pandemic. Methods: A web-based survey was disseminated to patients and physicians through a variety of media and healthcare communications from May 2020 to July 2021. Demographic details and attitudes across a range of virtual care domains were collected. Quantitative responses were analyzed descriptively. Open-text responses were gathered to contrast when a virtual visit was superior or inferior to an in-person one, and a thematic content analysis was used. Results: There were 197 patients and 93 physician respondents, representing a range of demographic and practice characteristics. Patients noted several benefits of virtual care and felt it should continue to be available. Physicians felt they could do a lot of their care virtually. Common themes related to the superiority of virtual care were for "quick" visits, reviewing test results, chronic disease monitoring, and medication needs. Virtual care was less ideal when a physical exam was needed, and was not perceived as a good fit for an individual's cultural, language, or emotional needs. Certain conditions were identified as both ideal and non-ideal for the virtual format (e.g. mental healthcare). Discussion: Certain situations are more amenable to virtual care with personal preferences among both patients and physicians. Future priorities should ensure that virtual care is effective across the range of clinical situations in which it may be used and that both virtual and in-person options are equally available to those who want them.

2.
Front Plant Sci ; 15: 1245545, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38872892

RESUMEN

The resistance of Arabidopsis thaliana to clubroot, a major disease of Brassicaceae caused by the obligate protist Plasmodiophora brassicae, is controlled in part by epigenetic factors. The detection of some of these epigenetic quantitative trait loci (QTLepi) has been shown to depend on experimental conditions. The aim of the present study was to assess whether and how temperature and/or soil water availability influenced both the detection and the extent of the effect of response QTLepi. The epigenetic recombinant inbred line (epiRIL) population, derived from the cross between ddm1-2 and Col-0 (partially resistant and susceptible to clubroot, respectively), was phenotyped for response to P. brassicae under four abiotic conditions including standard conditions, a 5°C temperature increase, drought, and flooding. The abiotic constraints tested had a significant impact on both the leaf growth of the epiRIL population and the outcome of the epiRIL-pathogen interaction. Linkage analysis led to the detection of a total of 31 QTLepi, 18 of which were specific to one abiotic condition and 13 common to at least two environments. EpiRIL showed significant plasticity under epigenetic control, which appeared to be specific to the traits evaluated and to the abiotic conditions. These results highlight that the environment can affect the epigenetic architecture of plant growth and immune responses and advance our understanding of the epigenetic factors underlying plasticity in response to climate change.

3.
Plant Commun ; 5(5): 100824, 2024 May 13.
Artículo en Inglés | MEDLINE | ID: mdl-38268192

RESUMEN

Clubroot caused by the protist Plasmodiophora brassicae is a major disease affecting cultivated Brassicaceae. Using a combination of quantitative trait locus (QTL) fine mapping, CRISPR-Cas9 validation, and extensive analyses of DNA sequence and methylation patterns, we revealed that the two adjacent neighboring NLR (nucleotide-binding and leucine-rich repeat) genes AT5G47260 and AT5G47280 cooperate in controlling broad-spectrum quantitative partial resistance to the root pathogen P. brassicae in Arabidopsis and that they are epigenetically regulated. The variation in DNA methylation is not associated with any nucleotide variation or any transposable element presence/absence variants and is stably inherited. Variations in DNA methylation at the Pb-At5.2 QTL are widespread across Arabidopsis accessions and correlate negatively with variations in expression of the two genes. Our study demonstrates that natural, stable, and transgenerationally inherited epigenetic variations can play an important role in shaping resistance to plant pathogens by modulating the expression of immune receptors.


Asunto(s)
Arabidopsis , Resistencia a la Enfermedad , Enfermedades de las Plantas , Arabidopsis/genética , Arabidopsis/inmunología , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/inmunología , Enfermedades de las Plantas/parasitología , Resistencia a la Enfermedad/genética , Proteínas NLR/genética , Proteínas NLR/metabolismo , Metilación de ADN , Plasmodiophorida/fisiología , Sitios de Carácter Cuantitativo/genética , Proteínas de Arabidopsis/genética , Epigénesis Genética , Regulación de la Expresión Génica de las Plantas , Genes de Plantas , Alelos
4.
BMC Biol ; 19(1): 55, 2021 03 23.
Artículo en Inglés | MEDLINE | ID: mdl-33757516

RESUMEN

BACKGROUND: The fungus Leptosphaeria maculans has an exceptionally long and complex relationship with its host plant, Brassica napus, during which it switches between different lifestyles, including asymptomatic, biotrophic, necrotrophic, and saprotrophic stages. The fungus is also exemplary of "two-speed" genome organisms in the genome of which gene-rich and repeat-rich regions alternate. Except for a few stages of plant infection under controlled conditions, nothing is known about the genes mobilized by the fungus throughout its life cycle, which may last several years in the field. RESULTS: We performed RNA-seq on samples corresponding to all stages of the interaction of L. maculans with its host plant, either alive or dead (stem residues after harvest) in controlled conditions or in field experiments under natural inoculum pressure, over periods of time ranging from a few days to months or years. A total of 102 biological samples corresponding to 37 sets of conditions were analyzed. We show here that about 9% of the genes of this fungus are highly expressed during its interactions with its host plant. These genes are distributed into eight well-defined expression clusters, corresponding to specific infection lifestyles or to tissue-specific genes. All expression clusters are enriched in effector genes, and one cluster is specific to the saprophytic lifestyle on plant residues. One cluster, including genes known to be involved in the first phase of asymptomatic fungal growth in leaves, is re-used at each asymptomatic growth stage, regardless of the type of organ infected. The expression of the genes of this cluster is repeatedly turned on and off during infection. Whatever their expression profile, the genes of these clusters are enriched in heterochromatin regions associated with H3K9me3 or H3K27me3 repressive marks. These findings provide support for the hypothesis that part of the fungal genes involved in niche adaptation is located in heterochromatic regions of the genome, conferring an extreme plasticity of expression. CONCLUSION: This work opens up new avenues for plant disease control, by identifying stage-specific effectors that could be used as targets for the identification of novel durable disease resistance genes, or for the in-depth analysis of chromatin remodeling during plant infection, which could be manipulated to interfere with the global expression of effector genes at crucial stages of plant infection.


Asunto(s)
Brassica napus/microbiología , Proteínas Fúngicas/genética , Interacciones Huésped-Patógeno , Leptosphaeria/genética , Transcriptoma/fisiología , Proteínas Fúngicas/metabolismo , Genes Fúngicos , Leptosphaeria/fisiología , Enfermedades de las Plantas/microbiología
5.
Educ Inf Technol (Dordr) ; 26(1): 1273-1292, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32863732

RESUMEN

Cognitive empathy (also known as perspective-taking) is an important, teachable, skill. As part of a knowledge translation project, we identified a) interest in an evidence-based cognitive empathy mobile app and b) which faculties believe that cognitive empathy is important for their profession. Students (n = 638) and instructors/professors (n = 38) completed a university-wide survey. Participants in Education, Social Work, and the Health Sciences were among those most interested in the app. The majority of participants said that they would prefer for the app to be free or less than $3 for students. Most participants preferred a one-time payment option. Across 17 faculties, all but one had 60% or more of its sampled members say that cognitive empathy is important for their profession. Results illuminate perceptions of cognitive empathy instruction and technology. Results also provide insight into issues to consider when developing and implementing an educational communication app.

6.
J Clin Nurs ; 29(3-4): 330-346, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31661584

RESUMEN

AIMS AND OBJECTIVES: To synthesise and map the literature on the psychological outcomes reported following debriefing of healthcare providers who experience expected and unexpected patient death in either clinical practice or simulation setting. BACKGROUND: Patient death occurs in both the clinical and simulation environments and can result in psychological stress in healthcare providers and students. While debriefing following patient death has demonstrated the ability to promote positive psychological outcomes, addressing the psychological or emotional stress of the event is inconsistently addressed. DESIGN: A scoping review was conducted using the Arksey and O'Malley framework. METHOD: The Cochrane Library, MEDLINE, CINAHL, PsycINFO, JBI and Scopus databases were searched with English language constraints and no limit on publication date. The Scoping Reviews (PRISMA-ScR) Checklist was used (Annals of Internal Medicine, 2018, 169, 467) (see Appendix S1). RESULTS: Eighteen articles (16 research papers and 2 review papers) met the inclusion criteria. Of the 16 research papers, 9 reported on debriefing models in the simulation environment and 7 in the clinical setting. The types of debriefing models found in the simulation setting tended to focus on healthcare providers' learning, while those in the clinical setting typically focused on healthcare providers' emotional reactions and resulted in positive psychological effects. CONCLUSION: Debriefing has the potential to positively affect psychological outcomes of healthcare providers who experience patient death. The type of debriefing that is selected is a key component to achieving these positive outcomes. RELEVANCE TO CLINICAL PRACTICE: This scoping review identified the debriefing frameworks used in both simulation and clinical environments following patient death events, and any associated psychological outcomes. There is a need for debriefing to occur after each death in either environment; however, there is a lack of evidence-based debriefing frameworks that can be used in both the clinical and simulation environments to promote positive psychological outcomes.


Asunto(s)
Actitud Frente a la Muerte , Personal de Salud/psicología , Adaptación Psicológica , Personal de Salud/educación , Humanos , Entrenamiento Simulado , Estrés Psicológico
7.
New Phytol ; 222(1): 468-479, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30393890

RESUMEN

Quantitative disease resistance, often influenced by environmental factors, is thought to be the result of DNA sequence variants segregating at multiple loci. However, heritable differences in DNA methylation, so-called transgenerational epigenetic variants, also could contribute to quantitative traits. Here, we tested this possibility using the well-characterized quantitative resistance of Arabidopsis to clubroot, a Brassica major disease caused by Plasmodiophora brassicae. For that, we used the epigenetic recombinant inbred lines (epiRIL) derived from the cross ddm1-2 × Col-0, which show extensive epigenetic variation but limited DNA sequence variation. Quantitative loci under epigenetic control (QTLepi ) mapping was carried out on 123 epiRIL infected with P. brassicae and using various disease-related traits. EpiRIL displayed a wide range of continuous phenotypic responses. Twenty QTLepi were detected across the five chromosomes, with a bona fide epigenetic origin for 16 of them. The effect of five QTLepi was dependent on temperature conditions. Six QTLepi co-localized with previously identified clubroot resistance genes and QTL in Arabidopsis. Co-localization of clubroot resistance QTLepi with previously detected DNA-based QTL reveals a complex model in which a combination of allelic and epiallelic variations interacts with the environment to lead to variation in clubroot quantitative resistance.


Asunto(s)
Arabidopsis/genética , Arabidopsis/inmunología , Resistencia a la Enfermedad/genética , Epigénesis Genética , Variación Genética , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Arabidopsis/crecimiento & desarrollo , Arabidopsis/microbiología , Secuencia de Bases , Metilación de ADN/genética , Patrón de Herencia/genética , Mutación/genética , Fenotipo , Plasmodiophorida/fisiología , Sitios de Carácter Cuantitativo/genética , Temperatura
8.
BMC Nurs ; 17: 21, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29849504

RESUMEN

BACKGROUND: Lifestyle counseling is described as a "major breakthrough" in the control of chronic diseases. Counseling can be challenging to nurses due their lack of motivation to counsel, hesitancy to appear non-judgmental, lack of empathy, and lack of time. Nurses voice their need for more training in counseling communication skills. Our main objective was to engage in ongoing development and testing of a promising Heart Health Whispering perspective-taking intervention on nursing students' clinical empathy, perceptual understanding, and client readiness to alter health risk behaviors. METHODS: In this randomized controlled pilot study, the full intervention (perspective-taking instructions, practice, and video-feedback) and partial intervention (video-feedback only) comprised 24 and 18 nursing students, respectively. Quantitative data were collected with a 10-item pre- and post-intervention clinical empathy tool, a one-item 'readiness to change' health risk behavior tool plus similarity ratings on students' empathic accuracy were calculated. Data were analyzed using Independent Samples t Tests and mixed model ANCOVA models. Students' and actors' evaluative responses toward the intervention phases were collected by handwritten notes, and analyzed using content analysis and constant comparison techniques. RESULTS: The main finding was that students in the full intervention group reported greater clinical empathy in the post versus baseline condition. Students underestimated their clinical empathy in comparison to carers' reports in the post-condition. In both intervention groups, carers reported more readiness to change in the post-condition. Carers identified favorable and unfavorable perceptions and outcomes of approaches taken by students. Students desired immediate and direct feedback after the video-dialogue and -tagging exercise. CONCLUSIONS: Heart Health Whispering is a promising intervention to help educators in basic and continuing education to bolster nurse confidence in empathic conversations on health risk behaviors. This intervention incorporates commonly used strategies to teach empathic communication along with a novel video-analysis application of a perspective-taking task. Student and carer actor comments highlighted the value in opportunities for students to engage in self-evaluation and practicing the empathic process of taking the client's perspective on health risk behaviors.

9.
BMC Plant Biol ; 16(1): 251, 2016 11 11.
Artículo en Inglés | MEDLINE | ID: mdl-27835985

RESUMEN

BACKGROUND: The induction of alcohol fermentation in roots is a plant adaptive response to flooding stress and oxygen deprivation. Available transcriptomic data suggest that fermentation-related genes are also frequently induced in roots infected with gall forming pathogens, but the biological significance of this induction is unclear. In this study, we addressed the role of hypoxia responses in Arabidopsis roots during infection by the clubroot agent Plasmodiophora brassicae. RESULTS: The hypoxia-related gene markers PYRUVATE DECARBOXYLASE 1 (PDC1), PYRUVATE DECARBOXYLASE 2 (PDC2) and ALCOHOL DEHYDROGENASE 1 (ADH1) were induced during secondary infection by two isolates of P. brassicae, eH and e2. PDC2 was highly induced as soon as 7 days post inoculation (dpi), i.e., before the development of gall symptoms, and GUS staining revealed that ADH1 induction was localised in infected cortical cells of root galls at 21 dpi. Clubroot symptoms were significantly milder in the pdc1 and pdc2 mutants compared with Col-0, but a null T-DNA insertional mutation of ADH1 did not affect clubroot susceptibility. The Arg/N-end rule pathway of ubiquitin-mediated proteolysis controls oxygen sensing in plants. Mutants of components of this pathway, ate1 ate2 and prt6, that both exhibit constitutive hypoxia responses, showed enhanced clubroot symptoms. In contrast, gall development was reduced in quintuple and sextuple mutants where the activity of all oxygen-sensing Group VII Ethylene Response Factor transcription factors (ERFVIIs) is absent (erfVII and prt6 erfVII). CONCLUSIONS: Our data demonstrate that the induction of PDC1 and PDC2 during the secondary infection of roots by P. brassicae contributes positively to clubroot development, and that this is controlled by oxygen-sensing through ERFVIIs. The absence of any major role of ADH1 in symptom development may also suggest that PDC activity could contribute to the formation of galls through the activation of a PDH bypass.


Asunto(s)
Proteínas de Arabidopsis/metabolismo , Arabidopsis/metabolismo , Arabidopsis/parasitología , Plasmodiophorida/fisiología , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Regulación de la Expresión Génica de las Plantas , Enfermedades de las Plantas/parasitología , Raíces de Plantas/genética , Raíces de Plantas/metabolismo , Raíces de Plantas/parasitología
10.
Plant Cell Physiol ; 56(11): 2158-68, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26363358

RESUMEN

The role of salicylic acid (SA) and jasmonic acid (JA) signaling in resistance to root pathogens has been poorly documented. We assessed the contribution of SA and JA to basal and partial resistance of Arabidopsis to the biotrophic clubroot agent Plasmodiophora brassicae. SA and JA levels as well as the expression of the SA-responsive genes PR2 and PR5 and the JA-responsive genes ARGAH2 and THI2.1 were monitored in infected roots of the accessions Col-0 (susceptible) and Bur-0 (partially resistant). SA signaling was activated in Bur-0 but not in Col-0. The JA pathway was weakly activated in Bur-0 but was strongly induced in Col-0. The contribution of both pathways to clubroot resistance was then assessed using exogenous phytohormone application and mutants affected in SA or JA signaling. Exogenous SA treatment decreased clubroot symptoms in the two Arabidopsis accessions, whereas JA treatment reduced clubroot symptoms only in Col-0. The cpr5-2 mutant, in which SA responses are constitutively induced, was more resistant to clubroot than the corresponding wild type, and the JA signaling-deficient mutant jar1 was more susceptible. Finally, we showed that the JA-mediated induction of NATA1 drove N(δ)-acetylornithine biosynthesis in infected Col-0 roots. The 35S::NATA1 and nata1 lines displayed reduced or enhanced clubroot symptoms, respectively, thus suggesting that in Col-0 this pathway was involved in the JA-mediated basal clubroot resistance. Overall, our data support the idea that, depending on the Arabidopsis accession, both SA and JA signaling can play a role in partial inhibition of clubroot development in compatible interactions with P. brassicae.


Asunto(s)
Arabidopsis/inmunología , Arabidopsis/parasitología , Ciclopentanos/metabolismo , Oxilipinas/metabolismo , Plasmodiophorida/fisiología , Ácido Salicílico/metabolismo , Transducción de Señal , Enfermedades de las Plantas/inmunología , Enfermedades de las Plantas/parasitología , Reguladores del Crecimiento de las Plantas/metabolismo , Raíces de Plantas/metabolismo
11.
Front Plant Sci ; 6: 539, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26257750

RESUMEN

Camalexin has been reported to play defensive functions against several pathogens in Arabidopsis. In this study, we investigated the possible role of camalexin accumulation in two Arabidopsis genotypes with different levels of basal resistance to the compatible eH strain of the clubroot agent Plasmodiophora brassicae. Camalexin biosynthesis was induced in infected roots of both Col-0 (susceptible) and Bur-0 (partially resistant) accessions during the secondary phase of infection. However, the level of accumulation was four-to-seven times higher in Bur-0 than Col-0. This was associated with the enhanced transcription of a set of camalexin biosynthetic P450 genes in Bur-0: CYP71A13, CYP71A12, and CYP79B2. This induction correlated with slower P. brassicae growth in Bur-0 compared to Col-0, thus suggesting a relationship between the levels of camalexin biosynthesis and the different levels of resistance. Clubroot-triggered biosynthesis of camalexin may also participate in basal defense in Col-0, as gall symptoms and pathogen development were enhanced in the pad3 mutant (Col-0 genetic background), which is defective in camalexin biosynthesis. Clubroot and camalexin responses were then studied in Heterogeneous Inbred Families (HIF) lines derived from a cross between Bur-0 and Col-0. The Bur/Col allelic substitution in the region of the previously identified clubroot resistance QTL PbAt5.2 (Chromosome 5) was associated with both the enhanced clubroot-triggered induction of camalexin biosynthesis and the reduced P. brassicae development. Altogether, our results suggest that high levels of clubroot-triggered camalexin biosynthesis play a role in the quantitative control of partial resistance of Arabidopsis to clubroot.

12.
Planta ; 231(1): 57-65, 2009 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-19820963

RESUMEN

In an attempt to improve the bread-making quality within hexaploid wheat by elaborating novel high-molecular weight glutenin subunits (HMW-GS) combinations useful in wheat-breeding programmes, a 1A chromosome fragment carrying the Glu-A1 locus encoding the subunit Ax2*, was translocated to the long arm of chromosome 1D. The partially isohomoeoallelic line, designated RR239, had a meiotic behaviour as regular as cv. Courtot. It was characterised using genomic in situ hybridization and microsatellite markers as well as biochemical and proteomic approaches. The translocated 1D chromosome had an interstitial 1AL segment representing in average 30% of the recombinant arm length that was confirmed by molecular analysis. The genetic length of the removed segment in chromosome 1DL was estimated to be at least 51 cM, and that of the interstitial 1AL translocation to be at least 33 cM. Proteome analysis performed on total endosperm proteins revealed variation in amounts, 8 spots and 1 spot being up- and downregulated, respectively. Quantitative variations in HMW-GS were observed for the Glu-A1 (Ax2*) and Glu-B1 (Bx7 + By8) loci in response to duplication of the Glu-A1 locus.


Asunto(s)
Cromosomas de las Plantas/genética , Sitios Genéticos/genética , Técnicas Genéticas , Glútenes/genética , Subunidades de Proteína/genética , Recombinación Genética/genética , Triticum/genética , Pan , Emparejamiento Cromosómico/genética , Electroforesis en Gel de Poliacrilamida , Glútenes/aislamiento & purificación , Meiosis , Peso Molecular , Mapeo Físico de Cromosoma , Proteoma/análisis
13.
Genome ; 52(4): 338-46, 2009 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19370089

RESUMEN

The allotetraploid species Aegilops variabilis Eig (2n = 28, UUSvSv) belongs to the tribe Triticeae and is closely related to wheat. One accession, Ae. variabilis No. 1, was found to be resistant to the cereal cyst nematode (CCN) and the root-knot nematode (RKN). As the genetic variability for resistance to those two pests is limited within wheat, this accession was crossed to bread wheat. Previous work enabled the development of two addition lines and two translocation lines carrying resistance. Here, we demonstrate, using genomic in situ hybridization, that there is no U-Sv interchange in the parental accession of Ae. variabilis. However, there are multiple rearrangements in the Sv chromosomes. The Ae. variabilis chromosome carrying the CreX gene for resistance to CCN combined segments with homoeology to wheat groups 1, 2, 4, and 6. The CreX gene belongs to the group 1 part and it was likely to have been introduced into chromosome 1BL at a similar location as the previously found QTL QCre.srd-1B for CCN resistance. The second Ae. variabilis chromosome carrying CreY and Rkn2 combined segments with homoeology to wheat groups 2, 4, and 7 on its short arm and group 3 on its long arm. It was designated as 3Sv. The two genes for resistance are carried by its long arm and have been transferred to wheat chromosome 3BL through homoeologous and genetically balanced recombination. Different SSR markers present in the introgressed segments could be used in marker-assisted selection.


Asunto(s)
Inmunidad Innata/genética , Nematodos/genética , Enfermedades de las Plantas/genética , Poaceae/genética , Triticum/genética , Animales , Cromosomas de las Plantas , Hibridación Genética , Hibridación Fluorescente in Situ , Translocación Genética
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