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1.
Nano Lett ; 24(38): 11992-11999, 2024 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-39269785

RESUMO

Bimetallic nanowires play important roles in the fields of electronics and mechanics. However, their structure types and morphological control methods are limited, especially for systems with low lattice mismatch. Herein, for a Cu-Ni bimetallic system with lattice mismatch ratio less than 2.5%, a novel preparation approach of various Cu-Ni nanowires dominated by Ni(II) reduction kinetics is presented. With the increase of Ni(II) reduction rate, the core-shell Cu@Ni straight nanowires, the asymmetric Cu-Ni nanocurves, and asymmetric Cu-Ni nanocoils can be prepared, respectively. The formation of Cu-Ni nanowires with different structures can be divided into the growth of Cu nanowires and the deposition of Ni. The regulatory effects were revealed by establishing a kinetic model for Ni(II) reduction. For the novel Cu-Ni asymmetrically distributed nanocurves and nanocoils, the formation mechanism was proposed by considering the Cu nanowire bending due to the rearrangement of surface ligand and bending-induced symmetry breaking of Ni(II) reduction.

2.
Langmuir ; 40(25): 13134-13143, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38868999

RESUMO

Nanoparticle composite microspheres are a versatile material with unique features and wide-ranging applications, including catalysis, biological medicine, and electronic devices. The adsorption behavior of nanoparticles on the surface of microspheres plays a crucial role in determining the further application potentials. The understanding of nanoparticle adsorption behavior on microsphere surfaces is essential for guiding future applications in nanoparticle composite microspheres. In this work, the adsorption behavior of unstable copper nanoparticles (Cu NPs) on polystyrene-based (PS-based) microspheres was investigated. The influence of PS-based microspheres' surface properties and the oxidation degree of Cu NPs were determined. The adsorption mechanism of Cu NPs on PS-based microspheres was analyzed. Furthermore, the amounts and rates of adsorption were examined. It was found that the Cu NPs can be rapidly and firmly adsorbed on the surface of carboxyl-modified polystyrene microspheres. Additionally, precise control over the distribution of Cu NPs on the surface of PS-based microspheres can be achieved by manipulating the solvent's polarity.

3.
BMC Public Health ; 24(1): 1923, 2024 Jul 17.
Artigo em Inglês | MEDLINE | ID: mdl-39020343

RESUMO

BACKGROUND: This study aims to investigate the trends and ecological determinants of physical activity among U.S. children and adolescents during the 2019-2021 period, encompassing the COVID-19 pandemic's onset and subsequent years. METHODS: Utilizing data from the National Survey of Children's Health over three years, this cohort study analyzed physical activity levels and ecological determinants among 82,068 participants aged 6-17. The sample included 36,133 children (44%) and 45,935 adolescents (56%), with variables assessed by caregiver reports. RESULTS: The analysis revealed a significant decline in physical activity among children from 2019 to 2020, followed by a recovery in 2021, whereas adolescents showed a continued decrease without recovery. Over the study period, children were consistently more active than adolescents. Better health status, normal weight, less screen time, stronger peer relationships, higher parental involvement, better family resilience and greater school participation were consistently correlated with increased physical activity in both age groups. Sleep duration was a predictor of activity only in children, while mental health status was solely a predictor in adolescents. Neighborhood environment consistently predicted children's activity levels but was a significant factor for adolescents only in 2020. CONCLUSIONS: These findings highlight the differing impacts of the pandemic on physical activity between children and adolescents, emphasizing the need for targeted public health interventions, particularly for adolescents whose activity levels have not recovered from the pandemic period. Age-specific physical activity interventions should consider sleep duration and neighborhood environmental factors when targeting children and mental health factors when focused on adolescents.


Assuntos
COVID-19 , Exercício Físico , Humanos , COVID-19/epidemiologia , Adolescente , Criança , Masculino , Feminino , Estados Unidos/epidemiologia , Exercício Físico/psicologia , Estudos de Coortes , Pandemias , Características de Residência/estatística & dados numéricos
4.
J Adolesc ; 94(7): 981-995, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35938559

RESUMO

INTRODUCTION: The current study investigated the developmental trajectory of adolescents' career decision-making self-efficacy (self-efficacy) and ambivalence in career decision-making (ambivalence) as well as the longitudinal impact of career-related parental behaviors (parental behaviors) on self-efficacy and self-efficacy on ambivalence. METHODS: We recruited 588 students from two elementary schools and three middle schools from city of Guangzhou, Province Guangdong in China. Participants were from Grade 4 to Grade 9 with an average age of 11.88 (SD = 1.63), 321 (54.6%) were male, and 9 (1.53%) were missing for gender. We applied a latent growth model using data from all three waves. RESULTS AND CONCLUSION: After applying a latent growth model using data from all three waves, the results have indicated that self-efficacy decreased as these participants transitioned from childhood to early adolescence, and that their ambivalence fell on an increasing trajectory. Cross-sectionally, it indicated that "support" of parental behaviors was positively associated with self-efficacy, and "interference" of parental behaviors was positively associated with ambivalence. Longitudinally, "interference" of parental behaviors was negatively predicting the change rate of self-efficacy. A predictive relation did not exist between self-efficacy and ambivalence, such that a negative correlation was observed on a cross-sectional level. Implications and limitations are discussed as well.


Assuntos
Escolha da Profissão , Autoeficácia , Adolescente , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Pais , Estudantes
5.
Int J Mol Sci ; 23(19)2022 Oct 08.
Artigo em Inglês | MEDLINE | ID: mdl-36233240

RESUMO

Porcine-induced pluripotent stem cells (piPSCs) are of great significance to animal breeding and human medicine; however, an important problem is that the maintenance of piPSCs mainly depends on exogenous expression of pluripotent transcription factors (TFs), and germline transmission-competent piPSCs have not yet been successfully established. In this study, we explore the defect of epigenetic reprogramming during piPSCs formation, including chromatin accessibility, DNA methylation, and imprinted gene expression, with high-throughput sequencing (ATAC-seq, WGBS, RNA-seq, and Re-seq) methods. We found the somatic features were successfully silenced by connecting closed chromatin loci with downregulated genes, while DNA methylation has limited effects on somatic silence. However, the incomplete chromatin remodeling and DNA demethylation in pluripotency genes hinder pluripotent activation, resulting in the low expression of endogenous pluripotency genes. In addition, the expression of potential imprinted genes was abnormal, and many allelic-biased expressed genes in porcine embryonic fibroblasts (PEFs) were erased, accompanied by establishment of new allelic-biased expressed genes in piPSCs. This study reveals the aberrant epigenetic reprogramming during dox-dependent piPSCs formation, which lays the foundation for research of porcine-iPSC reprogramming and genome imprinting.


Assuntos
Células-Tronco Pluripotentes Induzidas , Células-Tronco Pluripotentes , Animais , Reprogramação Celular/genética , Cromatina/metabolismo , Impressão Genômica , Células-Tronco Pluripotentes/metabolismo , Suínos , Fatores de Transcrição/metabolismo
6.
Inorg Chem ; 60(17): 12835-12846, 2021 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-34428896

RESUMO

A family of novel bis-tridentate Ir(III) complexes (Ir1-Ir5) incorporating both functional N∧C∧N-type ligands (L1-L5) and N∧N∧C-type ligand (L0) were synthesized attentively and characterized scientifically. The crystalline structures of Ir1, Ir3 and Ir4 were resoundingly confirmed by XRD. With the aid of experimental and theoretical methods, their photophysical properties at transient and steady states were scientifically investigated. The broadband charge-transfer absorption for these aforementioned Ir(III) complexes is up to 600 nm as shown in the UV-visible absorption spectrum. The emission lifetimes of their excited states are good. Between the visible and near-infrared regions, Ir1-Ir5 possessed powerful excited-state absorption. Hence, a remarkably robust reverse saturable absorption (RSA) process can occur once the complexes are irradiated by a 532 nm laser. The RSA effect follows the descending order: Ir3 > Ir5 > Ir4 ≈ Ir1 > Ir2. To sum up, modifying electron-donating units (-OCH3) and large π-conjugated units to the pyridyl N∧C∧N-type ligands is a systematic way to markedly raise the RSA effect. Therefore, these octahedral bis-tridentate Ir(III) complexes are potentially state-of-the-art optical limiting (OPL) materials.

8.
Med Sci Monit ; 25: 7763-7769, 2019 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-31618191

RESUMO

BACKGROUND Pulmonary hypertension is a common complication of interstitial lung disease. This study was conducted to retrospectively analyze the incidence of pulmonary hypertension among interstitial lung disease patients and the correlation between systolic pulmonary artery pressure (PASP) and pulmonary functions. We also intended to investigate whether antinuclear antibody (ANA) could be an effective indicator of pulmonary hypertension. MATERIAL AND METHODS There were 182 patients diagnosed with interstitial lung disease through high-resolution computed tomography (HRCT). Pulmonary hypertension was defined as an increase of mean pulmonary arterial pressure (PAPm) ≥25 mmHg (~PASP ≥40 mmHg) at rest. Severe pulmonary hypertension was defined as PAPm ≥35 mmHg. There were 104 cases including in this study. There were 67 cases from the ANA positive (ANA+) group and 37 cases from the ANA negative (ANA-) group. All study patients had pulmonary function tests, which included the measurements of maximal voluntary ventilation (MVV), residual volume (RV), total lung capacity (TLC), forced expiratory volume (FVC), vital capacity (VC), and diffusing capacity of the lungs for carbon monoxide (DLCO). RESULTS The pulmonary hypertension incidence in the study cohort was 25%, and the severe pulmonary hypertension incidence was 6.48%. The incidence of pulmonary hypertension in ANA+ cases was 22.22%. The incidence of pulmonary hypertension in the ANA- cases was 32.14%. The lung function test results showed moderate relationships between DLCO, FVC%, VC%, and PASP; no relationship between MVV, FEV1/FVC%, RV/TLC, and PASP; minimum relationship between FVC%, VC%, and PASP in the ANA+ group; and moderate relationship between FVC%, VC%, and PASP in the ANA- group. CONCLUSIONS Pulmonary hypertension occurred in 25% of the 182 interstitial lung disease patients and was negatively associated with deteriorated lung functions (specifically VC%, FVC%, and DLCO parameters). ANA level was not associated with the prognosis of pulmonary hypertension of patients with interstitial lung disease, and it did not significantly affect the correlation between PASP and pulmonary functions. Thus, ANA level did not seem to be a necessary indicator of pulmonary hypertension, and a more effective treatment method for pulmonary hypertension of patients with interstitial lung disease is urgently needed.


Assuntos
Hipertensão Pulmonar/epidemiologia , Doenças Pulmonares Intersticiais/epidemiologia , Idoso , Anticorpos Antinucleares/análise , Biomarcadores/sangue , Pressão Sanguínea/fisiologia , China/epidemiologia , Estudos de Coortes , Feminino , Volume Expiratório Forçado , Humanos , Hipertensão Pulmonar/sangue , Hipertensão Pulmonar/etiologia , Hipertensão Pulmonar/fisiopatologia , Doenças Pulmonares Intersticiais/sangue , Doenças Pulmonares Intersticiais/complicações , Doenças Pulmonares Intersticiais/fisiopatologia , Masculino , Pessoa de Meia-Idade , Testes de Função Respiratória/métodos , Estudos Retrospectivos , Capacidade Vital
9.
J Nanosci Nanotechnol ; 19(9): 5994-5998, 2019 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-30961772

RESUMO

Polyvinylidene fluoride (PVDF) flat membrane was prepared by thermally induced phase separation (TIPS) method using a mixture of dimethyl phthalate (DMP) and dioctyl phthalate (DOP) as a diluent. The PVDF/DMP/DOP system phase separation was test by DSC, cross section structure of membrane was observed by SEM. The effect of polymer concentrations, cooling rate and coagulation bath temperature on the cross section structure of membrane and surface micro-structure were studied. Results showed that membrane pore size porosity and water flux decreased with the increase in polymer concentration. The membrane section by the dendritic structure transition of nodular structure eventually turned into a compact structure. Pore size and water flux increased with the increase in coagulation bath temperature. The spherulite structures of the cross section of the membrane reduced while the lacy structure increased cross section smoothing.

10.
BMC Med Genet ; 19(1): 17, 2018 01 29.
Artigo em Inglês | MEDLINE | ID: mdl-29378538

RESUMO

BACKGROUND: Gitelman syndrome (GS) is an autosomal recessive disorder caused by genic mutations of SLC12A3 (Solute carrier family 12 member 3), which encodes the Na-Cl cotransporter (NCC), and presents with characteristic metabolic abnormalities, including hypokalemia, metabolic alkalosis, hypomagnesemia, and hypocalciuria. In this study, we report a case of a GS pedigree, including analysis of GS-associated gene mutations. METHODS: We performed next-generation sequencing analysis and Sanger sequencing to explore the SLC12A3 mutations in a GS pedigree that included a 35-year-old female patient with GS and five family members within three generations. Furthermore, we summarized their clinical manifestations and analyzed laboratory parameters related to GS. RESULTS: The female proband (the patient with GS) presented with intermittent fatigue and transient periods of tetany, along with significant hypokalemia, hypomagnesemia, and hypocalciuria. All other members of the pedigree had normal laboratory results without obvious GS-related symptoms. Genetic analysis of the SLC12A3 gene identified two novel missense mutations (c.1919A > G, p.N640S in exon 15; c.2522A > G, p.D841G in exon 21) in the patient with GS. Moreover, we demonstrated that her mother, younger maternal uncle, and cousin were carriers of one mutation (c.1919A > G), and her father was the carrier of the other (c.2522A > G). CONCLUSION: This is the first report of these two novel pathogenic variants of SLC12A3 and their contribution to GS. Further functional studies are particularly warranted to explore the underlying molecular mechanisms.


Assuntos
Síndrome de Gitelman/diagnóstico , Síndrome de Gitelman/genética , Adulto , Feminino , Testes Genéticos , Variação Genética , Heterozigoto , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Masculino , Mutação de Sentido Incorreto , Linhagem , Membro 3 da Família 12 de Carreador de Soluto/genética
11.
Biochem Biophys Res Commun ; 482(4): 678-685, 2017 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-27865837

RESUMO

Autophagy is believed to play an important role in maintaining homeostasis in pancreatic ß-cells during insulin resistance. This study investigated the role of autophagy in ß-cell damage induced by cholesterol and its possible activation mechanism. Rat and mouse pancreatic ß-cell lines INS-1 and ßTC-6 were incubated with cholesterol alone or in combination with autophagy inhibitors E-64d/Pepstatin A or bafilomycin A1. DAPI staining, western blotting, transmission electron microscopy and immunofluorescence were conducted to assess the effects of autophagy inhibitors on cholesterol-induced apoptosis and autophagy activity. An increase in FITC-LC3 fluorescence dots, autophagic vacuoles and LC3-II protein indicated that autophagy was activated in cells treated with cholesterol. This was further confirmed by blocking the natural turnover processes in lysosomes and autolysosomes with autophagy inhibitors, suggesting enhanced autophagic activity rather than blockage of autophagy. Furthermore, inhibition of autophagy significantly augmented the activation of caspase 3 and the percentage of cholesterol-induced apoptotic nuclei. These results demonstrate that autophagy plays a protective role against cholesterol-induced apoptosis in pancreatic ß-cells.


Assuntos
Apoptose , Autofagia , Colesterol/química , Células Secretoras de Insulina/metabolismo , Animais , Caspase 3/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Corantes Fluorescentes/química , Homeostase , Resistência à Insulina , Células Secretoras de Insulina/citologia , Insulinoma/metabolismo , Macrolídeos/química , Camundongos , Microscopia Eletrônica de Transmissão , Proteínas Associadas aos Microtúbulos/metabolismo , Pepstatinas/química , Ratos , Serina-Treonina Quinases TOR/metabolismo
12.
BMC Cancer ; 15: 509, 2015 Jul 08.
Artigo em Inglês | MEDLINE | ID: mdl-26152689

RESUMO

BACKGROUND: Drug resistance is still one of the key causes of death in epithelial ovarian carcinoma (EOC) patients, however there are very few strategies to reverse chemoresistance. Here we try to clarify whether and how miR-9 takes part in the regulation of paclitaxel sensitivity. METHODS: miR-9 expressions in EOC cells and tissues were detected by Realtime PCR. The target of miR-9 was validated through dual luciferase reporter assay and Western Blot. Methylation study, RNAi technique and cytotoxicity assay were used to determine the intrinsic mechanism of miR-9 in paclitaxel sensitivity regulation. RESULTS: miR-9 is down-regulated in paclitaxel resistant EOC. The patients with lower miR-9, Grade 3, Stage III -IV and suboptimal surgery present shorter survival time. miR-9 and suboptimal surgery are independent prognostic factors of EOC. Modulating miR-9 expression could change paclitaxel sensitivity of EOC cells. CCNG1, validated as a direct target of miR-9, mediates paclitaxel resistance. miR-9-1 and 3 gene hypermethylation would decrease miR-9 expression, while demethylation of miR-9 gene could restore miR-9 expression and improve paclitaxel sensitivity in chemoresistance EOC cells. Furthermore, methylation-associated miR-9 deregulation in EOC cells could be induced by paclitaxel exposure. CONCLUSIONS: Methylation-associated miR-9 down-regulation is probably one of the key mechanisms for paclitaxel resistance in EOC cells, via targeting CCNG1. Our findings may also provide a new potential therapeutic target to reverse paclitaxel resistance in EOC patients.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Resistencia a Medicamentos Antineoplásicos/genética , Regulação Neoplásica da Expressão Gênica , MicroRNAs/genética , Neoplasias Epiteliais e Glandulares/genética , Neoplasias Ovarianas/genética , Paclitaxel/farmacologia , Carcinoma Epitelial do Ovário , Linhagem Celular Tumoral , Ciclina G1/genética , Metilação de DNA , Regulação para Baixo , Feminino , Loci Gênicos , Humanos , Metilação , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neoplasias Epiteliais e Glandulares/mortalidade , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Ovarianas/tratamento farmacológico , Neoplasias Ovarianas/mortalidade , Neoplasias Ovarianas/patologia , Prognóstico , Interferência de RNA , RNA Mensageiro/genética
13.
Zhonghua Nei Ke Za Zhi ; 53(1): 13-8, 2014 Jan.
Artigo em Zh | MEDLINE | ID: mdl-24674721

RESUMO

OBJECTIVE: To investigate the relationship between serum uric acid (UA) level and abdominal obesity or metabolic syndrome (MS). METHODS: A total of 875 subjects, with 350 males and 525 females, aged 40-65 years old, were enrolled in this study. The clinical and biochemical data were collected and MRI was used to assess the visceral and subcutaneous adipose tissues. The relationships between UA level and abdominal obesity or MS were analyzed, and the cut-off values of UA for abdominal obesity and MS were determined. RESULTS: Raised risks of abdominal obesity(OR = 4.35, 95%CI 1.91-9.90 in males; OR = 5.44, 95%CI 2.41-12.31 in females) and MS(OR = 4.47, 95%CI 2.08-9.62 in males; OR = 11.62, 95%CI 3.43-39.37 in females) were observed with the increase of UA level. The multiple logistic regression analysis showed that UA was an independent risk factor for hypertriglyceridemia(OR = 2.23, 95%CI 1.02-4.87 in males; OR = 3.04, 95%CI 1.49-6.23 in females) in all subjects and for abdominal obesity(OR = 3.23, 95%CI 1.32-7.91) and hypertension (OR = 2.35, 95%CI 1.37-4.05) in the females. Among the females, the regression line analyzed by simple correlation indicated that the UA level of 244.0 µmol/L was corresponded to the visceral adipose tissue area of 80 cm(2). The optimal cut-off point of UA for the diagnosis of MS was 258.8 µmol/L determined by the receiver operating characteristic curve. CONCLUSIONS: The level of UA is closely correlated with abdominal obesity and MS in the middle-aged Chinese. The elevated UA level is an independent risk factor for abdominal obesity and MS in the female.


Assuntos
Síndrome Metabólica/epidemiologia , Obesidade Abdominal/epidemiologia , Ácido Úrico/sangue , Adulto , Idoso , Feminino , Humanos , Masculino , Síndrome Metabólica/sangue , Pessoa de Meia-Idade , Obesidade Abdominal/sangue , Fatores de Risco
14.
Artigo em Inglês | MEDLINE | ID: mdl-38622051

RESUMO

In the context of the COVID-19 pandemic, university students were exposed to increased stress, which significantly affected their well-being. This study examines the coping mechanisms employed by Chinese university students during this crisis, with a particular focus on the potential protective role of coping flexibility in maintaining their well-being. Using the transactional stress model and the dual-process theory of coping flexibility, this longitudinal study analyzed the responses of 206 Chinese university students at three measurement points in late 2022. The findings suggest that disruptions in daily life during the pandemic likely led students to engage in problematic internet use as a coping strategy, which subsequently led to reduced well-being. However, the study also shows that coping flexibility plays a crucial protective role in maintaining students' well-being. These findings highlight the urgent need for targeted interventions aimed at enhancing coping flexibility among university students, especially in the evolving post-pandemic landscape.

15.
Sci Rep ; 14(1): 16375, 2024 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-39014013

RESUMO

Large language models (LLMs) are becoming a significant source of content generation in social networks, which is a typical complex adaptive system (CAS). However, due to their hallucinatory nature, LLMs produce false information that can spread through social networks, which will impact the stability of the whole society. The uncertainty of LLMs false information spread within social networks is attributable to the diversity of individual behaviors, intricate interconnectivity, and dynamic network structures. Quantifying the uncertainty of false information spread by LLMs in social networks is beneficial for preemptively devising strategies to defend against threats. To address these challenges, we propose an LLMs hallucination-aware dynamic modeling method via agent-based probability distributions, spread popularity and community affiliation, to quantify the uncertain spreading of LLMs hallucination in social networks. We set up the node attributes and behaviors in the model based on real-world data. For evaluation, we consider the spreaders, informed people, discerning and unwilling non-spreaders as indicators, and quantified the spreading under different LLMs task situations, such as QA, dialogue, and summarization, as well as LLMs versions. Furthermore, we conduct experiments using real-world LLM hallucination data combined with social network features to ensure the validity of the proposed quantifying scheme.

16.
Int J Biol Macromol ; 280(Pt 2): 135807, 2024 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-39306179

RESUMO

Skeletal muscle satellite cells (SMSCs) are pivotal in skeletal muscle development and are influenced by numerous regulatory factors. This study focuses on the regulatory and functional mechanism roles of lncMD1, a muscle-specific long non-coding RNA, in the proliferation and differentiation of goat SMSCs. Employing in vitro cultured goat SMSCs, this study demonstrated that lncMD1, functions as a decoy for miR-133a-3p and miR-361-3p. This interaction competitively binds these microRNAs to modulate the expression of dynactin subunit 2 (DCTN2) and dynactin subunit 1 (DCTN1), thereby affects SMSCs proliferation and differentiation. These findings enhance the understanding of non-coding RNAs in goat SMSCs growth cycles and offer a theoretical foundation for exploring the molecular processes of goat skeletal muscle myogenic development.

17.
Environ Sci Ecotechnol ; 21: 100415, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38577706

RESUMO

Emerging evidence suggests a link between alterations in the gut microbiome and adverse health outcomes in the hosts exposed to environmental pollutants. Yet, the causal relationships and underlying mechanisms remain largely undefined. Here we show that exposure to biotoxins can affect gut pathobiome assembly in amphibians, which in turn triggers the toxicity of exogenous pollutants. We used Xenopus laevis as a model in this study. Tadpoles exposed to tropolone demonstrated notable developmental impairments and increased locomotor activity, with a reduction in total length by 4.37%-22.48% and an increase in swimming speed by 49.96%-84.83%. Fusobacterium and Cetobacterium are predominant taxa in the gut pathobiome of tropolone-exposed tadpoles. The tropolone-induced developmental and behavioral disorders in the host were mediated by assembly of the gut pathobiome, leading to transcriptome reprogramming. This study not only advances our understanding of the intricate interactions between environmental pollutants, the gut pathobiome, and host health but also emphasizes the potential of the gut pathobiome in mediating the toxicological effects of environmental contaminants.

18.
Nat Microbiol ; 2024 Aug 05.
Artigo em Inglês | MEDLINE | ID: mdl-39103572

RESUMO

Resident microbiota produces small molecules that influence the chemical microenvironments on leaves, but its signalling roles in pathogen defence are not yet well understood. Here we show that Aspergillus cvjetkovicii, enriched in rice leaf microbiota, subverts Rhizoctonia solani infections via small-molecule-mediated interspecies signalling. 2,4-Di-tert-butylphenol (2,4-DTBP), identified as a key signalling molecule within the Aspergillus-enriched microbiota, effectively neutralizes reactive oxygen species-dependent pathogenicity by switching off bZIP-activated AMT1 transcription in R. solani. Exogenous application of A. cvjetkovicii and 2,4-DTBP demonstrated varying degrees of protective effects against R. solani infection in diverse crops, including cucumber, maize, soybean and tomato. In rice field experiments, they reduced the R. solani-caused disease index to 19.7-32.2%, compared with 67.2-82.6% in the control group. Moreover, 2,4-DTBP showed activity against other rice phytopathogens, such as Fusarium fujikuroi. These findings reveal a defensive strategy against phytopathogens in the phyllosphere, highlighting the potential of symbiotic microbiota-driven neutralization of pathogenicity.

19.
Complement Ther Clin Pract ; 51: 101731, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36716672

RESUMO

BACKGROUND: The research on e-sports mainly concerns the relationship between game playing behavior and Internet addiction, especially among college students. It remained a question of how college students' e-sports playing was associated with their lifestyle behaviors and psychological well-being in China. OBJECTIVES: Our study aimed to explore whether collegiate e-sports players' e-sports participation behaviors differ across demographic backgrounds and how their e-sports playing relates to their lifestyle behaviors and psychological well-being. METHODS: A cross-sectional survey was conducted on 1441 collegiate e-sports players in China. The demographic characteristics of collegiate e-sports players were explored. The Bivariate Person correlation, linear and Tobit regression analyses were used to examine how students' e-sports playing was related to their lifestyle behaviors (i.e., sleep quality and physical activity) and psychological well-being (mobile phone addiction, online game addiction, satisfaction with life, and perceived stress). RESULTS: The results of independent t-test and ANOVA analyses revealed that students from different grades, majors, family residences, and family structures differed in their e-sports participation behaviors. The results of linear regression and Tobit regression analyses also revealed that students' e-sports participation behaviors were related to their lifestyle behaviors and psychological well-being, except for sleep quality and mobile phone addiction. It is noteworthy that the length of time in playing e-sports and e-sports consumption was related to different lifestyle behaviors and psychological well-being. CONCLUSION: The findings demonstrated that e-sports playing had penetrated college students' daily life. Appropriate time arrangement and rational e-sports consumption are crucial in promoting a healthy lifestyle and psychological well-being among college students.


Assuntos
Estilo de Vida , Bem-Estar Psicológico , Humanos , Estudos Transversais , Inquéritos e Questionários , China
20.
Cancer Manag Res ; 15: 233-243, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36873254

RESUMO

Background: Increasing epidemiological evidence supported that chronic inflammatory factors might be involved in the carcinogenesis and progression of various cancers. The present study tried to investigate the prognostic value of perioperative C-reactive protein (CRP) in prognosis of patients with epithelial ovarian carcinoma (EOC) from a tertiary university teaching hospital. Methods: The cutoff value of CRP was calculated according to receiver operating characteristic (ROC) curve. Variables were compared using Chi-square test. Progress-free survival (PFS) and overall survival (OS) time were assessed by Kaplan-Meier (KM) survival analysis and Log rank test based on serum CRP level. Univariate and multivariate Cox regression analyses were applied for assessing the relationship between clinicopathological parameters and survival. Results: Higher perioperative CRP levels (preoperative ≥5.15 mg/L and postoperative ≥72.45 mg/L) were significantly associated with serous tumor, high-grade, advanced stage, elevated preoperative CA125, suboptimal surgery, chemotherapy resistance, recurrence and death in EOC (P < 0.01). KM analysis suggested patients with elevated preoperative, postoperative and perioperative CRP had shorter survival (P < 0.01). Elevated perioperative CRP was an independent risk factor for PFS (HR 1.510, 95% CI 1.124-2.028; P = 0.006) and OS (HR 1.580, 95% CI 1.109-2.251; P = 0.011). Similar results were obtained for elevated preoperative CRP. Subgroup analysis further suggested that elevated perioperative CRP was also an independent risk factor for prognosis in advanced stage and serous EOC. Conclusion: Elevated perioperative CRP was an independent risk factor for poorer prognosis of EOC, particularly in advanced stage and serous patients.

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