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1.
BMC Plant Biol ; 24(1): 64, 2024 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-38262910

RESUMO

BACKGROUND: Corynespora leaf spot is a common leaf disease occurring in sesame, and the disease causes leaf yellowing and even shedding, which affects the growth quality of sesame. At present, the mechanism of sesame resistance to this disease is still unclear. Understanding the resistance mechanism of sesame to Corynespora leaf spot is highly important for the control of infection. In this study, the leaves of the sesame resistant variety (R) and the sesame susceptible variety (S) were collected at 0-48 hpi for transcriptome sequencing, and used a combined third-generation long-read and next-generation short-read technology approach to identify some key genes and main pathways related to resistance. RESULTS: The gene expression levels of the two sesame varieties were significantly different at 0, 6, 12, 24, 36 and 48 hpi, indicating that the up-regulation of differentially expressed genes in the R might enhanced the resistance. Moreover, combined with the phenotypic observations of sesame leaves inoculated at different time points, we found that 12 hpi was the key time point leading to the resistance difference between the two sesame varieties at the molecular level. The WGCNA identified two modules significantly associated with disease resistance, and screened out 10 key genes that were highly expressed in R but low expressed in S, which belonged to transcription factors (WRKY, AP2/ERF-ERF, and NAC types) and protein kinases (RLK-Pelle_DLSV, RLK-Pelle_SD-2b, and RLK-Pelle_WAK types). These genes could be the key response factors in the response of sesame to infection by Corynespora cassiicola. GO and KEGG enrichment analysis showed that specific modules could be enriched, which manifested as enrichment in biologically important pathways, such as plant signalling hormone transduction, plant-pathogen interaction, carbon metabolism, phenylpropanoid biosynthesis, glutathione metabolism, MAPK and other stress-related pathways. CONCLUSIONS: This study provides an important resource of genes contributing to disease resistance and will deepen our understanding of the regulation of disease resistance, paving the way for further molecular breeding of sesame.


Assuntos
Ascomicetos , Sesamum , Resistência à Doença , RNA-Seq , Transcriptoma , Reguladores de Crescimento de Plantas
2.
Arch Virol ; 169(4): 75, 2024 Mar 16.
Artigo em Inglês | MEDLINE | ID: mdl-38492088

RESUMO

Fusarium oxysporum is a widespread plant pathogen that causes fusarium wilt and fusarium root rot in many economically significant crops. Here, a novel dsRNA virus tentatively named "Fusarium oxysporum virus 1" (FoV1) was identified in F. oxysporum strain 3S-18. The genome of FoV1 is 2,944 nucleotides (nt) in length and contains two non-overlapping open reading frames (ORF1 and 2). The larger of these, ORF2, encodes an RNA-dependent RNA polymerase (RdRp) of 590 amino acids with a molecular mass of 67.52 kDa. ORF1 encodes a putative nucleocapsid protein consisting of 134 amino acids with a molecular mass of 34.25 kDa. The RdRp domain of FoV1 shares 60.00% to 84.24% sequence identity with non-segmented dsRNA viruses. Phylogenetic analysis further suggested that FoV1 is a new member of the proposed genus "Unirnavirus" accommodating unclassified monopartite dsRNA viruses.


Assuntos
Micovírus , Fusarium , Vírus de RNA , Fusarium/genética , Vírus de RNA de Cadeia Dupla/genética , Filogenia , Genoma Viral , Micovírus/genética , RNA Polimerase Dependente de RNA/genética , Fases de Leitura Aberta , Fungos , Aminoácidos/genética , Vírus de RNA/genética , RNA de Cadeia Dupla/genética , RNA Viral/genética
3.
Gerontology ; 70(5): 544-560, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38452749

RESUMO

INTRODUCTION: Noninvasive brain stimulation (NIBS) has shown benefits for cognitive function in older adults. However, the effects of transcranial direct current stimulation (tDCS) on cognitive function in older adults are inconsistent across studies, and the evidence for tDCS has limitations. We aim to explore whether tDCS can improve cognitive function and different cognitive domains (i.e., learning and memory and executive function) in adults aged 65 years and older with and without mild cognitive impairment and to further analyze the influencing factors of tDCS. METHODS: Five English databases (PubMed, Cochrane Library, EMBASE, Web of Science, the cumulative Index to Nursing and Allied Health Literature [CINAHL]) and four Chinese databases were searched from inception to October 14, 2023. Literature screening, data extraction, and quality assessment were completed independently by two reviewers. All statistical analyses were conducted using RevMan software (version 5.3). Standardized mean difference (SMD) along with a 95% confidence interval (CI) was used to express the effect size of the outcomes, and a random-effect model was also used. RESULTS: A total of 10 RCTs and 1,761 participants were included in the meta-analysis, and the risk of bias in those studies was relatively low. A significant effect favoring tDCS on immediate postintervention cognitive function (SMD = 0.16, Z = 2.36, p = 0.02) was found. However, the effects on immediate postintervention learning and memory (SMD = 0.20, Z = 2.00, p = 0.05) and executive function (SMD = 0.10, Z = 1.22, p = 0.22), and 1-month postintervention cognitive function (SMD = 0.12, Z = 1.50, p = 0.13), learning and memory (SMD = 0.17, Z = 1.39, p = 0.16), and executive function (SMD = 0.08, Z = 0.67, p = 0.51) were not statistically significant. CONCLUSION: tDCS can significantly improve the immediate postintervention cognitive function of healthy older adults and MCI elderly individuals. Additional longitudinal extensive sample studies are required to clarify the specific effects of tDCS on different cognitive domains, and the optimal tDCS parameters need to be explored to guide clinical practice.


Assuntos
Cognição , Disfunção Cognitiva , Ensaios Clínicos Controlados Aleatórios como Assunto , Estimulação Transcraniana por Corrente Contínua , Humanos , Estimulação Transcraniana por Corrente Contínua/métodos , Idoso , Disfunção Cognitiva/terapia , Função Executiva , Memória
4.
J Adv Nurs ; 2024 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-39140308

RESUMO

BACKGROUND: Infectious diseases, such as COVID-19, are high-risk factors for delirium. However, the implementation of nonpharmacological interventions faces major challenges during an infectious disease pandemic. AIMS: To evaluate the effect of the nurse-led Hospital Elder Life Program (NL-HELP) on delirium reduction among delirious patients with COVID-19. DESIGN: A single-blind randomized clinical trial. METHODS: This study recruited 122 delirious patients with COVID-19 from internal medicine wards at West China Hospital in China between January 30 and March 31, 2023. Participants were randomized to the NL-HELP group (n = 62) or the usual care group (n = 60). Patients in the intervention group received the NL-HELP protocol three times daily for 7 days. Patients in the control group received usual care. The primary outcome was the absence/presence of delirium during the intervention period measured by the 3-min Diagnostic Confusion Assessment Method. RESULTS: Fewer patients remained delirious in the NL-HELP group than in the control group. There were significantly more delirium-free days in the NL-HELP group than in the usual care group. There were no statistically significant differences between the two groups in terms of delirium severity, length of hospital stay, delirium at 30 days after discharge, 30-day readmission, 30-day mortality, physical function or quality of life. CONCLUSIONS: This study demonstrated that NL-HELP could reduce the presence of delirium in delirious patients. No effect was observed in terms of shortening the length of hospital stay, reducing 30-day mortality, or improving quality of life. IMPACT: NL-HELP may be effective in reducing the presence of delirium in delirious patients. Further research is needed to determine whether the NL-HELP can improve patient outcomes (e.g. mortality and quality of life) in a larger study. PATIENT OR PUBLIC CONTRIBUTION: Caregivers of delirious patients were invited to provide intervention strategies to prevent or abate delirium, including environmental management, orientation communications and identification of alert signs. TRIAL REGISTRATION: This study was prospectively registered at the Chinese Clinical Trial Registry (https://www.chictr.org.cn/) Identifier: ChiCTR2300067874.

5.
Int Nurs Rev ; 2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-38294406

RESUMO

AIM: To explore the mediating effect of work engagement and the moderated mediating effect of emotional workload on the relationship between job demands and job performance among nurses. BACKGROUND: Nurses work in a high-demand situation that could affect their job performance. However, previous studies have reported an inconsistent relationship between job demands and job performance. The underlying mechanism of how job demands influence job performance remains unclear. METHODS: An online cross-sectional survey was conducted with a convenience sample of 893 nurses from 14 cities in Sichuan Province between November and December 2021. Data were collected using the Job Demands Scale, Job Performance Scale, Utrecht Work Engagement Scale, and emotional workload subscale of the Questionnaire on the Experience and Evaluation of Work. Bootstrap and simple slope methods were used to test a moderated mediation model using Hayes' PROCESS macro. The STROBE reporting guidelines were utilized. RESULTS: Job demands had a positive effect on job performance, and this effect was mediated by work engagement. Emotional workload moderated the indirect relationship between job demands and job performance. Specifically, the positive effect of job demands on job performance via work engagement was attenuated in nurses with a high emotional workload. CONCLUSION: This study sheds light on the complex relationship between job demands and job performance. Work engagement and emotional workload deserve more attention to improve nurses' performance. IMPLICATIONS FOR NURSING AND NURSING POLICY: Policymakers and nurse managers should make efforts to develop and implement strategies to foster nurses' work engagement, reduce their emotional workload, and further help nurses efficiently deal with job demands.

6.
BMC Plant Biol ; 23(1): 624, 2023 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-38057720

RESUMO

BACKGROUND: Sesame charcoal rot caused by Macrophomina phaseolina is one of the most serious fungal diseases in sesame production, and threatens the yield and quality of sesame. WAKL genes are important in the plant response to biotic stresses by sensing and transmitting external signals to the intracellular receptor. However, there is still a lack about the WAKL gene family and its function in sesame resistance to M. phaseolina. The aim of this study was to interpret the roles of WAKL genes in sesame resistance to M. phaseolina. RESULTS: In this study, a comprehensive study of the WAKL gene family was conducted and 31 WAKL genes were identified in the sesame genome. Tandem duplication events were the main factor in expansion of the SiWAKL gene family. Phylogenetic analysis showed that the sesame SiWAKL gene family was divided into 4 groups. SiWAKL genes exhibited different expression patterns in diverse tissues. Under M. phaseolina stress, most SiWAKL genes were significantly induced. Notably, SiWAKL6 was strongly induced in the resistant variety "Zhengzhi 13". Functional analysis showed that SiWAKL6 was induced by salicylic acid but not methyl jasmonate in sesame. Overexpression of SiWAKL6 in transgenic Arabidopsis thaliana plants enhanced their resistance to M. phaseolina by inducing the expression of genes involved in the salicylic acid signaling pathway and reconstructing reactive oxygen species homeostasis. CONCLUSIONS: Taken together, the results provide a better understanding of functions about SiWAKL gene family and suggest that manipulation of these SiWAKL genes can improve plant resistance to M. phaseolina. The findings contributed to further understanding of functions of SiWAKL genes in plant immunity.


Assuntos
Arabidopsis , Ascomicetos , Sesamum , Sesamum/genética , Filogenia , Arabidopsis/genética , Ácido Salicílico/farmacologia
7.
Plant Dis ; 2023 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-37026626

RESUMO

Sesame (Sesamum indicum L.) is a very important oilseed crop and cultivated on 11.7 million hectares, producing 6.02 million tons of seeds with an average seed yield of 512 kg ha-1 in the world (Yadav et al. 2022). In June of 2021, diseased roots were observed on sesame in the villages of Mada and Hanba, Xiangcheng city (114.88°N, 33.13°E), Henan province, China. The diseased plants appeared stunted and wilted at the seedling stage. Approximately 7.1% to 17.7% of plants were affected in two fields, 0.6 ha in total, and disease severity in each affected plant ranged from 50% to 80%. Twenty-four disease plants were collected to confirm the pathogen. The diseased roots were cut into small fragments (2 to 5 mm long), surface sterilized with 75% ethanol (for 1 min), and 10% sodium hypochlorite (for 1 min) and then rinsed in sterilized water three times (1 min each rinse). The fragments were blotted dry and transferred to a potato dextrose agar (PDA) medium (potato 200 g/L, glucose 20 g/L, agar 18 g/L) amended with streptomycin (50 µg/mL). After incubation at 28°C for 24 h, white mycelium grew out from plant fragments. Then, a total of seven morphologically similar strains were transferred onto fresh V8 agar by hyphal tip transfer (Rollins 2003). By light microscope observations, the sporangia were filamentous or digitated, and undifferentiated or inflated lobulate. The oospores were mostly aplerotic, globose or subglobose in shape, and 20.4 to 42.6 µm in diameter (n = 90, n: Total number of oospores measured). Furthermore, antheridia were bulbous-like or clavate-like and were observed attached to the surface of the oospores. The zoospores were abundant and ranged from 8.5 to 14.2 µm in diameter. The morphology characteristics of all strains were consistent with those of Pythium myriotylum (Watanabe et al. 2007). Genomic DNA was extracted from the representative strain 20210628 using the CTAB method (Wangsomboondee et al. 2002). The complete internal transcribed spacer (ITS) and cytochrome oxidase subunit I gene (COI, COX1) can be valid and useful barcodes for accurate identification of many oomycetes (Robideau et al. 2011). The ITS and COI were amplified with the primers ITS1/ITS4 (Riit et al. 2016) and primers OomCox-Levup/OomCox-Levlo (Robideau et al. 2011), respectively. The nucleotide sequences obtained were deposited in the GenBank database under the accession numbers OM230138.2 (ITS) and ON500503.1 (COI). GenBank BLAST search identified the sequences as P. myriotylum ITS and COI sequences (e.g., HQ237488.1 and MK510848.1, respectively) with 100% coverage and 100% identity. To evaluate the pathogenicity, sesame seeds (cultivar: Jinzhi No.3) were planted in 12-cm-diameter plastic pots containing a mixture of sterilized soil, vermiculite and peat mossat a ratio of 3:1:1. Oospores were collected following the procedure of Raftoyannis et al. (2006) with minor modifications. Three-leaf stage sesame roots were soaked with 5 mL of oospore suspension at 1 × 106/mL of the 20210628 strain, and the control plants were inoculated with sterilized water. All plants were maintained in a greenhouse (28±2°C, > 80% R. H.). The experiment was repeated twice with three replications. The plants inoculated with P. myriotylum showed the water soak symptom on the stem base 7 days after inoculation, while control plants were symptomless. Three weeks after inoculation, the plants showed root tissue necrosis, root rot, and dwarfing symptoms that were similar to those observed on sesame plants in the field, while control plants remained healthy. P. myriotylum was re-isolated from the inoculated plants and the morphology was the same as the original strain 20210628. These results suggest that P. myriotylum is the causal agent of sesame root rot. Previous studies have revealed that P. myriotylum can cause root rot in peanuts (Yu et al. 2019), chili pepper (Hyder et al. 2018), green bean (Serrano et al. 2008) and aerial blight of tomato (Roberts et al. 1999). To the best of our knowledge, this is the first report of P. myriotylum causing root rot on sesame. This pathogen can infect plant roots and develop rapidly if no effective control measures are implemented. Once the disease breaks out in a large area, the yield of sesame will be seriously threatened. The results provide important implications for the prevention and management of this disease.

8.
Int Nurs Rev ; 70(2): 204-210, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35962469

RESUMO

AIM: To examine the mediating effect of basic psychological needs on the relationship between perceived organizational support and work engagement among nurses. BACKGROUND: The satisfaction of basic psychological needs is crucial for breeding and sustaining individuals' intrinsic motivation. Little is known about the underlying motivational mechanisms that explain the relationship among perceived organizational support, basic psychological needs, and work engagement in a nursing context. METHODS: This was a cross-sectional online survey. A sample of 858 nurses from 12 hospitals was surveyed on their perceived organizational support, basic psychological needs, and work engagement. Structural equation models and bootstrapping methods were used to examine the hypotheses. STROBE reporting guidelines were utilized. RESULTS: Perceived organizational support was positively associated with basic psychological needs and work engagement. Basic psychological needs were positively associated with work engagement. Basic psychological needs mediated the relationship between perceived organizational and work engagement. CONCLUSION: Perceived organizational support may enhance work engagement by fulfilling the basic psychological needs of nurses. IMPLICATIONS FOR NURSING AND NURSING POLICY: Basic psychological needs deserve more attention in nursing organizations. Managers should seek optimal strategies to fulfill nurses' needs for autonomy, competence, and relatedness to stimulate their intrinsic motivation to enhance work engagement.


Assuntos
Recursos Humanos de Enfermagem Hospitalar , Engajamento no Trabalho , Humanos , Estudos Transversais , Satisfação no Emprego , Inquéritos e Questionários , Local de Trabalho/psicologia , Recursos Humanos de Enfermagem Hospitalar/psicologia
9.
Arch Virol ; 167(5): 1365-1368, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35366710

RESUMO

A novel victorivirus was detected in an isolate of Corynespora cassiicola strain 20180909-03 and was named "Corynespora cassiicola victorivirus 1" (CcVV1). The complete genome sequence of this virus is 5140 bp in length and contains 57% GC with two large open reading frames (ORFs) overlapping at the tetranucleotide AUGA. The ORFs were predicted to encode a coat protein (CP) and an RNA-dependent RNA polymerase (RdRp), respectively, which are conserved in dsRNA fungal viruses of the family Totiviridae. Comparison and phylogenetic analysis of the deduced amino acid sequences of RdRp and CP showed that CcVV1 is a new member of the genus Victorivirus. This is the first report of a genomic sequence of a victorivirus infecting Corynespora cassiicola.


Assuntos
Genoma Viral , Totiviridae , Ascomicetos , Fases de Leitura Aberta , Filogenia , RNA de Cadeia Dupla , RNA Viral/genética , RNA Polimerase Dependente de RNA/genética , Proteínas Virais/química , Proteínas Virais/genética
10.
Arch Virol ; 167(5): 1375-1379, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35396643

RESUMO

Corynespora cassiicola is an important phytopathogenic fungus that severely impairs crop production. Here, we report the molecular characterization of a novel positive-sense single-stranded RNA (+ssRNA) mycovirus, Corynespora cassiicola fusarivirus 1 (CcFV1), isolated from C. cassiicola strain 20200826-3-1. Excluding the poly(A) tail, the genome of the virus is 6491 nt in length and contains three putative open reading frames (ORFs). The large ORF1 encodes a polypeptide of 1524 aa with a conserved RNA-dependent RNA polymerase (RdRp) domain and a helicase (Hel) domain. BLASTp analysis showed that CcFV1 ORF1 has the highest similarity to Setosphaeria turcica fusarivirus 1 (StFV1, 50.45% identity, E-value 0.0). ORF2 encodes a polypeptide with a conserved chromosome segregation ATPase (Smc) domain. The smaller ORF3 encodes a polypeptide with an unknown function. Phylogenetic analysis based on the ORF1- encoded polypeptide showed that CcFV1 is phylogenetically related to members of the newly proposed family "Fusariviridae". Thus, we suggest that CcFV1 might be a novel member of the family "Fusariviridae", and is the first to be discovered in C. cassiicola.


Assuntos
Ascomicetos , Micovírus , Vírus de RNA , Ascomicetos/genética , Micovírus/genética , Genoma Viral , Fases de Leitura Aberta , Filogenia , Vírus de RNA/genética , RNA Viral/genética
11.
J Adv Nurs ; 78(11): 3795-3805, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35942543

RESUMO

AIMS: To explore nurses' experiences and perceptions of career growth and its influencing factors, as career growth is more closely associated with individual attitudes and behaviours in the new career era. DESIGN: A qualitative descriptive design was used. METHODS: Thirty-one nurses from 10 secondary and 8 tertiary hospitals in Sichuan Province of China were purposively selected to participate in this study. The data were collected using individual semi-structured face-to-face interviews. Two researchers independently reviewed the transcripts and emergent coding. The data were analysed using qualitative content analysis. FINDINGS: The nurses' perceptions of career growth fully described the nurses' experience and occurred in five dimensions: career promotion, career goal progress, professional ability and quality improvement, professional identity development and increase in personal prestige. The factors influencing career growth were identified at the organizational, individual and social levels. Career growth in nursing was complex, changed over time and showed several specific characteristics compared with other careers. The nurse-specific symbol of career growth was professional identity development, which reflected career progression characteristics. CONCLUSIONS: Career growth is a multi-dimensional concept with varying influencing factors. The meaning of career growth for nurses is distinct from that for employees in other careers. IMPACT: Nursing managers should guide nurses to comprehensively assess their career growth from multiple perspectives, and professional identity development deserves more attention. Both organizations and individuals should take responsibility for career management to pursue career growth.


Assuntos
Enfermeiros Administradores , Enfermeiras e Enfermeiros , China , Humanos , Motivação , Pesquisa Qualitativa
12.
BMC Plant Biol ; 21(1): 159, 2021 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-33781203

RESUMO

BACKGROUND: Sesame (Sesamum indicum) charcoal rot, a destructive fungal disease caused by Macrophomina phaseolina (Tassi) Goid (MP), is a great threat to the yield and quality of sesame. However, there is a lack of information about the gene-for-gene relationship between sesame and MP, and the molecular mechanism behind the interaction is not yet clear. The aim of this study was to interpret the molecular mechanism of sesame resistance against MP in disease-resistant (DR) and disease-susceptible (DS) genotypes based on transcriptomics. This is the first report of the interaction between sesame and MP using this method. RESULTS: A set of core genes that response to MP were revealed by comparative transcriptomics and they were preferentially associated with GO terms such as ribosome-related processes, fruit ripening and regulation of jasmonic acid mediated signalling pathway. It is also exhibited that translational mechanism and transcriptional mechanism could co-activate in DR so that it can initiate the immunity to MP more rapidly. According to weighted gene co-expression network analysis (WGCNA) of differentially expressed gene sets between two genotypes, we found that leucine-rich repeat receptor-like kinase (LRR-RLK) proteins may assume an important job in sesame resistance against MP. Notably, compared with DS, most key genes were induced in DR such as pattern recognition receptors (PRRs) and resistance genes, indicating that DR initiated stronger pattern-triggered immunity (PTI) and effector-triggered immunity (ETI). Finally, the study showed that JA/ET and SA signalling pathways all play an important role in sesame resistance to MP. CONCLUSIONS: The defence response to MP of sesame, a complex bioprocess involving many phytohormones and disease resistance-related genes, was illustrated at the transcriptional level in our investigation. The findings shed more light on further understanding of different responses to MP in resistant and susceptible sesame.


Assuntos
Ascomicetos , Doenças das Plantas/microbiologia , Sesamum/genética , Sesamum/imunologia , Sesamum/microbiologia , Ascomicetos/imunologia , Resistência à Doença/genética , Regulação da Expressão Gênica de Plantas , Redes Reguladoras de Genes , Genes de Plantas , Genótipo , Doenças das Plantas/genética , Doenças das Plantas/imunologia , Raízes de Plantas/genética , Transcriptoma
13.
Arch Virol ; 165(2): 509-514, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31845152

RESUMO

Macrophomina phaseolina is an important phytopathogenic fungus with a broad host range. Here, the complete genome sequence of a novel victorivirus, tentatively named Macrophomina phaseolina victorivirus 1 (MpV1), was identified from strain 2012-019 of M. phaseolina. The MpV1 genome is 5,128 nucleotides long with a predicted GC content of 62%. Sequence analysis indicated that two open reading frames (ORF 1 and 2) overlap at a tetranucleotide AUGA sequence. Proteins encoded by ORF1 and ORF2 showed significant sequence similarity to coat proteins and the RNA-dependent RNA polymerases, respectively, of members of the family Totiviridae. Analysis of the genomic structure of MpV1, homolog searches of the deduced amino acid sequences, and phylogenetic analysis indicated that MpV1 is a new member of the genus Victorivirus. As far as we know, this is the first report of the full-length nucleotide sequence of the genome of a novel victorivirus that infects M. phaseolina.


Assuntos
Ascomicetos/virologia , Doenças das Plantas/microbiologia , Totiviridae/classificação , Totiviridae/isolamento & purificação , Sequenciamento Completo do Genoma , Composição de Bases , Proteínas do Capsídeo/genética , Biologia Computacional , Genoma Viral , Fases de Leitura Aberta , Filogenia , Raízes de Plantas/microbiologia , RNA Viral/genética , RNA Polimerase Dependente de RNA/genética , Homologia de Sequência , Sesamum/microbiologia , Totiviridae/genética
14.
J Nurs Scholarsh ; 52(4): 379-388, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32406186

RESUMO

PURPOSE: The purpose of this study was to determine the effectiveness of mindfulness-based stress reduction (MBSR) and mindfulness-based cognitive therapy (MBCT) on depression, quality of life (QoL), and glycosylated hemoglobin (HbA1c) in people with diabetes. DESIGN: A systematic literature review and meta-analysis was conducted. METHODS: Eight databases (PubMed, Embase, the Cumulative Index to Nursing and Allied Health Literature [CINAHL], Cochrane, PsycINFO, and three Chinese databases) were searched for relevant studies from inception to December 2019. Only randomized controlled trials (RCTs) of MBSR and MBCT interventions for people with type 1 and type 2 diabetes were included. FINDINGS: Nine studies described in 11 articles were included in the review. Meta-analysis showed a significant effect favoring MBSR and MBCT on depression (standardized mean difference -0.84; 95% confidence interval [CI] -1.16 to -0.51; p < .0001), the mental health composite score of QoL (mean difference [MD] 7.06; 95% CI 5.09 to 9.03; p < .00001), and HbA1c (MD -0.28; 95% CI -0.47 to -0.09; p = .004). However, effects on the physical health composite score of QoL have not been found. CONCLUSIONS: MBSR and MBCT are beneficial in improving depression, the mental health composite score of QoL, and HbA1c in people with diabetes. More well-designed trials using longer follow-up measurements are needed. CLINICAL RELEVANCE: MBSR and MBCT could be considered as effective complementary treatment alternatives for people with diabetes.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Diabetes Mellitus Tipo 1/psicologia , Diabetes Mellitus Tipo 2/psicologia , Atenção Plena , Estresse Psicológico/prevenção & controle , Diabetes Mellitus Tipo 1/terapia , Diabetes Mellitus Tipo 2/terapia , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
15.
Plant Dis ; 104(4): 1183-1187, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32065566

RESUMO

Production of pycnidia and pycnidiospores by Macrophomina phaseolina is not often seen in vitro. The objective of this study is to develop a simple and effective technique to obtain pycnidiospores of M. phaseolina isolates in vitro and to evaluate germination rates and pathogenicity of pycnidiospores. We found M. phaseolina isolates can produce pycnidia on oatmeal agar (OMA) under ultraviolet light with 365 nm wavelength (UV). For evaluating the effect of OMA and UV on growth of M. phaseolina, combinations of two agar media and three lighting conditions were tested. The results confirm that all six M. phaseolina isolates produced pycnidia only on OMA under UV. The pycnidiospores produced on OMA under UV had germination rates higher than 90%. In pathogenicity tests, inoculation with the pycnidiospores showed symptoms later than inoculation with hypha-colonized toothpicks. Significant differences in the pathogenicity is detected between isolates Mp2014003 and Mp2014024 when inoculation is done with the pycnidiospores (P < 0.001), but not when hypha-colonized toothpicks are used as inoculum (P = 0.091). This study provides a new method for obtaining pycnidiospores of M. phaseolina for future investigations.


Assuntos
Ascomicetos , Doenças das Plantas , Ágar , Meios de Cultura
16.
Arch Virol ; 164(9): 2411-2416, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31254049

RESUMO

Macrophomina phaseolina is a pathogenic fungus of the family Botryosphaeriaceae that causes stem rot or leaf blight in many economically important plants. Mycoviruses exist widely in fungi, but there are only a limited number of reports on mycovirus infection in M. phaseolina. A novel dsRNA virus, tentatively named "Macrophomina phaseolina fusagravirus 1" (MpFV1), was isolated from strain 2012-19 of M. phaseolina, and its molecular features were examined. The full-length cDNA of MpFV1 comprises 9,289 nucleotides with a predicted GC content of 48.1% and two discontinuous open reading frames (ORF 1 and 2). A-1 frameshift region with two typical factors, including a shifty heptamer (GGAAAAC) and an H-type pseudoknot, was predicted in the junction region of ORF1 and ORF2. The protein encoded by ORF1 shows significant similarity to a hypothetical protein, whereas ORF2 encodes an RNA-dependent RNA polymerase (RdRp) via a ribosomal frameshifting mechanism. Homology searches and phylogenetic analysis based on the RdRp sequence suggested that MpFV1 is a new member of the proposed family "Fusagraviridae".


Assuntos
Ascomicetos/virologia , Micovírus/isolamento & purificação , Vírus de RNA/isolamento & purificação , Mudança da Fase de Leitura do Gene Ribossômico , Micovírus/classificação , Micovírus/genética , Fases de Leitura Aberta , Filogenia , Vírus de RNA/classificação , Vírus de RNA/genética , RNA Polimerase Dependente de RNA/genética , Proteínas Virais/genética
17.
Biomacromolecules ; 18(10): 3367-3374, 2017 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-28956910

RESUMO

Amphiphilic block copolymers containing polypeptides can self-assemble into a variety of nonspherical structures arising from strong interactions between peptide units. Here, we report the synthesis of a pH-responsive poly(ethyl glycol)-block-poly(l-glutamic acid)-block-poly(N-octylglycine) (PEG-b-PGA-b-PNOG) triblock copolymers by sequential ring-opening polymerization using amine-terminated poly(ethyl glycol) as the macroinitiator followed by selective deprotection of the benzyl protecting group. The obtained triblock copolymer can be directly dispersed in aqueous solution with hydrophilic PEG, pH-responsive PGA block, and hydrophobic PNOG. We present a systematic study of the influence of pH, molar fraction, and molecular weight on the self-assemblies. It was found that the PEG-b-PGA-b-PNOG triblock tends to form two-dimensional nanodisks and nanosheet-like assemblies. The nanodisk-to-nanosheet transition is highly dependent on the pH and molar fraction despite the different molecular weights. We demonstrate that the dominant driving force of the nanodisks and nanosheets is the hydrophobicity of the PNOG blocks. The obtained bioinspired 2D nanostructures are potential candidates for applications in nanoscience and biomedicine.


Assuntos
Nanoestruturas/química , Peptídeos/química , Polietilenoglicóis/química , Ácido Poliglutâmico/química , Concentração de Íons de Hidrogênio , Polimerização
18.
Hu Li Za Zhi ; 64(2): 76-87, 2017 Apr.
Artigo em Zh | MEDLINE | ID: mdl-28393341

RESUMO

BACKGROUND: Managing increasing numbers of diabetic patients is placing increasing pressure on healthcare providers, especially general practitioners, who usually serve in multiple roles. This situation has caused generally poor results in terms of diabetes management. However, community nurses in some countries have successfully and effectively controlled chronic diseases among their patients. Therefore, the effects of nurse-led management is worth further exploration in order to better understand and promote this mode of care. PURPOSE: To explore the effects of community-nurse-led team management on diabetes patients. METHODS: An experimental research design was adopted. Patients with type 2 diabetes were recruited from two community health centers (the first for the intervention group, the second for the control group) in Wuhou District, Chengdu City, China. The intervention group received nurse-led team management care for 2 years, while the control group received standard care. The evaluations were conducted before the intervention and at 6, 12, and 24 months into the intervention. Outcomes included glycosylated hemoglobin (HbA1c) level, body mass index, waist circumference, visual acuity, ankle brachial index, kidney function index, urinary protein level, and electrocardiogram. RESULTS: The 179 participants included 88 in the intervention group and 91 in the control group. After the intervention, HbA1c level, ankle brachial index, and waist circumference were all significantly better in the intervention group than in the control group (F = 28.894, p < .01; F = 4.065, p < .01; F = 5.540, p < .01). The other outcome variables remained statistically similar between both groups throughout the study period. CONCLUSIONS: Community nurse-led team management is an effective mode of care in terms of controlling blood glucose control and preventing diabetes-related complications.


Assuntos
Serviços de Saúde Comunitária , Diabetes Mellitus Tipo 2/terapia , Enfermeiras e Enfermeiros , Equipe de Assistência ao Paciente , Adulto , Idoso , Diabetes Mellitus Tipo 2/sangue , Feminino , Hemoglobinas Glicadas/análise , Humanos , Masculino , Pessoa de Meia-Idade
19.
BMJ Open ; 14(6): e081334, 2024 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-38904141

RESUMO

OBJECTIVES: Career self-management is believed to be a critical behaviour in the new career era. However, the underlying mechanisms that stimulate nurses' career self-management are unclear. The aim of this study was to examine the mediating effect of self-efficacy and the moderating effect of proactive personality on the relationship between perceived organisational support and career self-management among nurses. DESIGN: This was a cross-sectional survey. SETTING AND PARTICIPANTS: A total of 1866 nurses from 15 hospitals across 15 cities in China were recruited for this study. PRIMARY AND SECONDARY OUTCOME MEASURES: The Perceived Organizational Support Scale, General Self-efficacy Scale, Proactive Personality Scale and Individual Career Management Questionnaire were used. Data were analysed using moderated mediation regressions with Hayes' PROCESS macro in SPSS version 26.0. RESULTS: General self-efficacy mediated the relationship between perceived organisational support and career self-management. Proactive personality moderated the direct (B=0.043, p<0.001, 95% CI 0.026 to 0.060) and indirect relationship (B=0.098, p<0.001, 95% CI 0.074 to 0.123) between perceived organisational support and career self-management. Further, the positive effects of perceived organisational support on general self-efficacy and career self-management were stronger for nurses with a high level of proactive personality. The model explained 47.2% of the variance in career self-management. CONCLUSION: The findings highlight the crucial benefits of self-efficacy and important conditional effects of perceived organisational support on nurses' career self-management.


Assuntos
Personalidade , Autoeficácia , Humanos , Feminino , Estudos Transversais , Masculino , Adulto , China , Inquéritos e Questionários , Autogestão/psicologia , Análise de Mediação , Cultura Organizacional , Pessoa de Meia-Idade , Recursos Humanos de Enfermagem Hospitalar/psicologia , Satisfação no Emprego , Enfermeiras e Enfermeiros/psicologia , Atitude do Pessoal de Saúde , Apoio Social
20.
Front Plant Sci ; 15: 1334189, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38410728

RESUMO

Leucine-rich repeat receptor-like kinases (LRR-RLKs) can participate in the regulation of plant growth and development, immunity and signal transduction. Sesamum indicum, one of the most important oil crops, has a significant role in promoting human health. In this study, 175 SiLRR-RLK genes were identified in S. indicum, and they were subdivided into 12 subfamilies by phylogenetic analysis. Gene duplication analysis showed that the expansion of the SiLRR-RLK family members in the sesame was mainly due to segmental duplication. Moreover, the gene expansion of subfamilies IV and III contributed to the perception of stimuli under M. phaseolina stress in the sesame. The collinearity analysis with other plant species revealed that the duplication of SiLRR-RLK genes occurred after the differentiation of dicotyledons and monocotyledons. The expression profile analysis and functional annotation of SiLRR-RLK genes indicated that they play a vital role in biotic stress. Furthermore, the protein-protein interaction and coexpression networks suggested that SiLRR-RLKs contributed to sesame resistance to Macrophomina phaseolina by acting alone or as a polymer with other SiLRR-RLKs. In conclusion, the comprehensive analysis of the SiLRR-RLK gene family provided a framework for further functional studies on SiLRR-RLK genes.

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