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1.
BMC Public Health ; 24(1): 2550, 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39300418

RESUMEN

BACKGROUND: School bullying, a serious problem for the physical and mental health of adolescents, is presently a significant issue in China. It is essential to recognize and comprehend potential risk factors and establish efficient preventive strategies. The purpose of this study was to examine the association between childhood maltreatment and school bullying in adolescents and to assess the mediating role of peer relationships. METHODS: Between March and April 2024, a cross-sectional survey was conducted among 2119 adolescents aged between 12 and 18 years in Guangdong Province, China. Self-report questionnaires were employed to collect data on childhood maltreatment, school bullying, and peer relationships. Subgroup analyses and mediating effects modeling were employed to analyze the data. RESULTS: The results indicated that adolescents who had experienced maltreatment were more at risk of bullying victimization (OR: 2.92, 95% CI: 2.34-3.64, P < 0.001), bullying perpetration (OR: 2.84, 95% CI: 1.99-4.05, P < 0.001), and bully-victimization (OR: 2.93, 95% CI: 1.95-4.41, P < 0.001), compared to adolescents who have not. Sexual abuse showed the most significant connection with all forms of bullying. The mediating effect of peer relationships was found to mediate the association between child maltreatment and bullying behaviour. The results indicated that worse peer relationships may exacerbate the adverse effects of maltreatment experiences and increase the risk of adolescents becoming bullies, either perpetrators or victims of bullying. CONCLUSIONS: Child maltreatment has been identified as one of the most significant influences on bullying behaviour in adolescents. The quality of peer relationships has been demonstrated to play an important role in preventing and reducing the occurrence of bullying. The results underscore the crucial role of early intervention in cases of child maltreatment and the fostering of positive peer relationships in schools.


Asunto(s)
Acoso Escolar , Maltrato a los Niños , Víctimas de Crimen , Grupo Paritario , Instituciones Académicas , Humanos , Acoso Escolar/psicología , Acoso Escolar/estadística & datos numéricos , Adolescente , China/epidemiología , Femenino , Masculino , Estudios Transversales , Maltrato a los Niños/psicología , Maltrato a los Niños/estadística & datos numéricos , Niño , Víctimas de Crimen/psicología , Víctimas de Crimen/estadística & datos numéricos , Encuestas y Cuestionarios , Factores de Riesgo , Relaciones Interpersonales , Autoinforme , Pueblos del Este de Asia
2.
J Agric Food Chem ; 72(33): 18434-18444, 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39105723

RESUMEN

Organophosphate esters (OPEs) have been widely produced and used, while little is known about their occurrence in the food chain and potential sources. In this study, raw cow milk, cow drinking water, and feed were collected from pastures across China, and OPEs were tested to explore the occurrence and transmission of OPEs in the food chain and to further assess daily OPE intakes for cows and humans via certain food consumption. The median level of ∑OPEs (sum of 15 OPEs) in raw milk was 2140 pg/mL, and tris(1-chloro-2-propyl) phosphate (TCIPP) was the most abundant OPE. Levels of OPEs in water were lower than those in raw milk except for triethyl phosphate (TEP), while levels of most OPEs in feed were significantly higher than those in raw milk (adjusted by dry weight). The estimated dietary intake of OPEs via feed for cows was 2530 ng/kg bw/day, which was much higher than that via water (742 ng/kg bw/day), indicating that feed was a more critical exposure source. For liquid milk consumers, the high-exposure (95th) estimated daily intakes (EDIs) of ∑15OPE were 20 and 7.11 ng/kg bw/day for 3-17 years and adults, respectively, and it is obvious that cows had much heavier OPE intake. Finally, the calculated hazard indexes (HIs) suggested that the intake of OPEs via cow milk consumption would not pose significant health risks to the Chinese population.


Asunto(s)
Alimentación Animal , Exposición Dietética , Agua Potable , Ésteres , Leche , Organofosfatos , Animales , Leche/química , China , Bovinos/metabolismo , Humanos , Alimentación Animal/análisis , Agua Potable/análisis , Agua Potable/química , Femenino , Exposición Dietética/análisis , Ésteres/análisis , Adulto , Organofosfatos/análisis , Contaminación de Alimentos/análisis , Adolescente , Preescolar , Niño , Adulto Joven , Masculino
3.
J Colloid Interface Sci ; 677(Pt B): 194-204, 2024 Aug 08.
Artículo en Inglés | MEDLINE | ID: mdl-39142160

RESUMEN

NiMoO4 (NM) has garnered significant attention due to its rich d-orbital electronic structure and multivalent electroactive cations. However, the inherently low electrical conductivity of NM limits its reaction kinetics. Herein, cobalt-substituted NM (Co-NM) nanorods were prepared via a hydrothermal reaction followed by subsequent thermal treatment. The incorporation of Ni-O-Co configurations stimulates an enhanced π-donation effect of the Co-O bond, facilitating the hybridization between the O 2p and Co 3d orbitals and thereby boosting charge transfer kinetics during electrochemical processes. The optimized 10 %Co-NM nanorods demonstrated a remarkable specific capacity of 557.8 C·g-1 at 1 A·g-1. Furthermore, an asymmetric supercapacitor constructed with 10 %Co-NM as the positive electrode and FeOOH as the negative electrode, achieved a significant energy density of 63.58 Wh·kg-1 at a power density of 805.38 W·kg-1. Thus, our work provides new insights into the rational design of stable bridging configurations to significantly improve electrochemical reaction kinetics.

4.
Medicine (Baltimore) ; 103(35): e39525, 2024 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-39213200

RESUMEN

We evaluated the association between serum ß2-microglobulin (ß2M) levels and prognosis in patients with acute ischemic stroke (AIS) and determined whether the association was affected by any clinical variables. This prospective study included 533 patients with AIS who were admitted to the Hospital of Nanhua Affiliated with the University of South China for treatment from June 1, 2021, to July 31, 2022. Using multiple regression modeling, the association between serum ß2M levels and poor functional outcomes-which were classified as being modified Rankin Scale scores of 3 to 6 (composite score of death and major disability), 3 to 5 (major disability), and 6 (death)-were assessed 3 months after stroke onset. At the 3-month follow-up assessment, 209 (47.39%) participants had poor functional outcomes: major disabilities in 150 (34.01%) cases and deaths in 59 (13.38%). After adjusting for important covariates, the group with serum ß2M levels in the highest quartile had the highest proportion of individuals with modified Rankin Scale scores of 3 to 6 (odds ratio [OR], 3.54; 95% confidence interval [CI], 1.35-9.33), 3 to 5 (OR, 2.95; 95% CI, 1.21-7.16), or 6 (OR, 1.02; 95% CI, 0.29-3.64) compared with the group having serum ß2M levels in the lowest quartiles. The risk prediction for the combined outcome of death and major disability improved after incorporating ß2M levels into models that included conventional risk factors. Subgroup analysis revealed a significant impact on the association between serum ß2M levels and poor functional outcomes only in patients with AIS whose time from onset to hospitalization was <12 hours (P for interaction < .05). Elevated serum ß2M levels were associated with poor functional outcomes in patients with AIS, possibly affected by the time from onset to hospitalization.


Asunto(s)
Accidente Cerebrovascular Isquémico , Microglobulina beta-2 , Humanos , Microglobulina beta-2/sangre , Masculino , Femenino , Accidente Cerebrovascular Isquémico/sangre , Accidente Cerebrovascular Isquémico/mortalidad , Persona de Mediana Edad , Estudios Prospectivos , Anciano , Pronóstico , Biomarcadores/sangre , China/epidemiología
5.
Sensors (Basel) ; 24(15)2024 Jul 31.
Artículo en Inglés | MEDLINE | ID: mdl-39124023

RESUMEN

With the gradual expansion of mining scale in open-pit coal mines, slope safety problems are increasingly diversified and complicated. In order to reduce the potential loss caused by slope sliding and reduce the major threat to the safety of life and property of residents in the mining area, this study selected two mining areas in Xinjiang as cases and focused on the relationship between phase noise and deformation. The study predicts the specific time point of slope sliding by analyzing the dynamic history correlation tangent angle between the two. Firstly, the time series data of the micro-variation monitoring radar are used to obtain the small deformation of the study area by differential InSAR (D-InSAR), and the phase noise is extracted from the radar echo in the sequence data. Then, the volume of the deformation body is calculated by analyzing the small deformation at each time point, and the standard deviation of the phase noise is calculated accordingly. Finally, the sliding time of the deformation body is predicted by combining the tangent angle of the ratio of the volume of the deformation body to the standard deviation of the phase noise. The results show that the maximum deformation rates of the deformation bodies in the studied mining areas reach 10.1 mm/h and 6.65 mm/h, respectively, and the maximum deformation volumes are 2,619,521.74 mm3 and 2,503,794.206 mm3, respectively. The predicted landslide time is earlier than the actual landslide time, which verifies the effectiveness of the proposed method. This prediction method can effectively identify the upcoming sliding events and the characteristics of the slope, provide more accurate and reliable prediction results for the slope monitoring staff, and significantly improve the efficiency of slope monitoring and early warning.

6.
Front Pharmacol ; 15: 1392239, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38994196

RESUMEN

Introduction: The national volume-based drug procurement policy initiated in China since 2018 represents a significant reform in China's pharmaceutical distribution system. It has largely squeezed out the price bubble of low-end generic drugs, making competition in the pharmaceutical sales segment more intense and transparent. This policy intervenes in the distribution link of the pharmaceutical industry by intensifying market competition, thereby enhancing the innovation willingness and R&D capabilities of pharmaceutical companies. Methods: Taking the national volume-based drug procurement policy as the policy shock, we used the multi-period difference-in-difference method to study the impact of the policy on innovation input, innovation output quantity and innovation output quality of listed pharmaceutical companies and its impact mechanism. Results: We found that the volume-based policy can significantly promote the pharmaceutical companies' innovation input and the innovation output quality, but significantly reduced the innovation output quantity. For innovative and generic drug companies, this policy has limited impact on innovative drug companies, but force generic drug companies to pay more attention to cost control and market positioning, and the quality and cost-effectiveness of R&D output to ensure competitiveness in the market. For bid-winning and non-winning companies, the policy has a greater innovation incentive for non-winning companies than winning companies, by imposing greater survival pressure on non-winning companies, forcing them to increase R&D investment intensity and adopt the innovation strategy of preferring quality to quantity. Discussion: The results show that the national volume-based drug procurement policy should be expanded to lower drug prices and lighten the medical burden on patients, with enhanced quality and safety supervision. Additionally, it suggests cautious application of such policies to innovative and high-end generic drugs to encourage continued pharmaceutical innovation and industry advancement.

7.
Small ; : e2404566, 2024 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-38963158

RESUMEN

Optoelectronic synapses have gained increasing attentions as a fundamental building block in the development of neuromorphic visual systems. However, it remains a challenge to integrate multiple functions into a single optoelectronic synapse that can be widely applied in wearable artificial intelligence and implantable neuromorphic vision systems. In this study, a stretchable optoelectronic synapse based on biodegradable ionic gelatin heterojunction is successfully developed. This device exhibits self-powered synaptic plasticity behavior with broad spectral response and excellent elastic properties, yet it degrades rapidly upon disposal. After complete cleavage, the device can be fully repaired within 1 min, which is mainly attributed to the non-covalent interactions between different molecular chains. Moreover, the recovery and reprocessing of the ionic gelatins result in optoelectronic properties that are virtually indistinguishable from their original state, showcasing the resilience and durability of ionic gelatins. The combination of biodegradability, stretchability, self-healing, zero-power consumption, ease of large-scale preparation, and low cost makes the work a major step forward in the development of biodegradable and stretchable optoelectronic synapses.

8.
J Chromatogr A ; 1730: 465152, 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39003980

RESUMEN

In vivo solid-phase microextraction (in vivo SPME) is an emerging fascinating sample pretreatment technique, but its quantitative correction method is different from the traditional correction methods, which has become a bottleneck limiting its development. At present, the sampling-rate calibration and equilibrium calibration are mainly used, however, their characteristics and applicability are not clear. In this study, the sampling-rate calibration and equilibrium calibration were evaluated in the case of the determination of neonicotinoids in bananas by in vivo SPME. The factors that affect the sampling rate (Rs), such as the matrix states, sampling durations, and individual differences were studied, and they all had impacts on Rs. Conversely, the equilibrium distribution coefficient (Kfs) remained constant after extraction equilibrium and the individual differences were smaller. The highest accuracy and precision were achieved by equilibrium calibration, and the relative recoveries were in the range of 83.2 %-104.3 % with the relative standard deviations below 8.1 % compared to a standard QuEChERS-based method. The lower limits of quantification for 4 neonicotinoids in bananas were below 5 ng g-1, lower than the standard method and the maximum residue levels in China and the European Union. This work clarifies the characteristics, rules and performance of the sampling-rate calibration and equilibrium calibration, which is of crucial importance for the development and application of in vivo SPME. The developed method is convenient, sensitive, and accurate for the determination of pesticide residues, which is of great significance to guide the safe use of pesticides in the field and prevent products with excessive pesticide residues from entering the market.


Asunto(s)
Musa , Neonicotinoides , Microextracción en Fase Sólida , Microextracción en Fase Sólida/métodos , Calibración , Neonicotinoides/análisis , Musa/química , Límite de Detección , Residuos de Plaguicidas/análisis , Cromatografía de Gases y Espectrometría de Masas/métodos , Reproducibilidad de los Resultados , Insecticidas/análisis , Contaminación de Alimentos/análisis
9.
Mult Scler Relat Disord ; 87: 105699, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38838424

RESUMEN

OBJECTIVE: To investigate the alteration in structural and functional connectivity networks (SCN and FCN) as well as their coupling in pediatric myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), and determine if these properties could serve as potential biomarkers for the disease. MATERIALS AND METHODS: In total of 32 children with MOGAD and 30 age- and sex-matched healthy controls (HC) were employed to construct the SCN and FCN, respectively. The graph-theoretical analyses of the global properties, node properties of the 90 brain nodes, and the structural-functional connectivity (SC-FC) coupling of the two networks were performed. The graph-theoretical properties that exhibited significant differences were analyzed using partial correlation analysis in conjunction with the clinical scales, including the expanded disability status scale (EDSS), modified Rankin scale (mRS), and pediatric cerebral performance category (PCPC) of the MOGAD group. Subsequently, a machine learning model was developed to discriminate between MOGAD and the HC group, aiming to explore the potential of these properties as biomarkers. RESULTS: The SCN of the MOGAD group exhibited aberrant global properties, including an increased characteristic path length (Lp) and a decreased global efficiency (Eg), along with reduced nodal properties such as degree centrality (Dc), nodal efficiency (Ne), and local efficiency in multiple nodes. The FCN of the MOGAD group only exhibited decreased Dc, Ne, and betweenness centrality in two nodes of nodal properties. Besides, MOGAD showed a significant decrease in SC-FC coupling compared to the HC group. The analysis of partial correlation revealed significant correlations between several properties and the scales of EDSS and mRS in the MOGAD group. The machine learning method was used to extract six features and establish the model, achieving a classification accuracy of 82.3% for MOGAD. CONCLUSIONS: Pediatric MOGAD showed a more pronounced impairment in the SCN along with decoupling of SC-FC. Both partial correlation analysis and discriminant modeling suggest that alterations in brain network properties have the potential as biomarkers for assessing brain damage in MOGAD.


Asunto(s)
Encéfalo , Glicoproteína Mielina-Oligodendrócito , Humanos , Glicoproteína Mielina-Oligodendrócito/inmunología , Niño , Femenino , Masculino , Adolescente , Encéfalo/diagnóstico por imagen , Encéfalo/fisiopatología , Encéfalo/patología , Imagen por Resonancia Magnética , Aprendizaje Automático , Red Nerviosa/diagnóstico por imagen , Red Nerviosa/fisiopatología , Conectoma , Autoanticuerpos , Biomarcadores , Enfermedades Autoinmunes Desmielinizantes SNC/fisiopatología , Enfermedades Autoinmunes Desmielinizantes SNC/inmunología , Enfermedades Autoinmunes Desmielinizantes SNC/diagnóstico por imagen , Enfermedades Autoinmunes Desmielinizantes SNC/patología
10.
Anal Chim Acta ; 1314: 342796, 2024 Jul 25.
Artículo en Inglés | MEDLINE | ID: mdl-38876515

RESUMEN

BACKGROUND: Excessive pesticide residues in agricultural products could accumulate in organisms through the food chain, causing potential harm to human health. The investigation of dissipation kinetics and residues of pesticides in crops is crucial for the scientific application of pesticides and the mitigation of their adverse effects on human health. In vivo solid-phase microextraction (in vivo SPME) has unique advantages, but the research on field plants is still lacking and the quantitative correction methods need to be further developed. RESULTS: A method combining in vivo solid-phase microextraction with ultra-performance liquid chromatography-tandem mass spectrometry (in vivo SPME-UPLC-MS/MS) was developed to monitor the presence of acetamiprid, cyromazine, thiamethoxam and imidacloprid in cowpea fruits grown in the field. The sampling rates (Rs) were determined using both in vitro SPME in homogenized cowpea samples and in vivo SPME in intact cowpea fruit samples. The in vivo-Rs values were significantly higher than the in vitro-Rs for the same analyte, which were used for in vivo SPME correction. The accuracy of this method was confirmed by comparison with a QuEChERS-based approach and subsequently applied to trace pesticide residues in field-grown cowpea fruits. The residual concentrations of each pesticide positively correlated with application doses. After 7 days of application at two different doses, all of the pesticides had residual concentrations below China's maximum residue limits. Both experimental data and predictions indicated that a safe preharvest interval for these pesticides is 7 days; however, if the European Union standards are to be met, a safe preharvest interval for cyromazine should be at least 13 days. SIGNIFICANCE: This study highlights the advantages of in vivo SPME for simultaneous analysis and tracking of multiple pesticides in crops under field conditions. This technique is environmentally friendly, minimally invasive, highly sensitive, accurate, rapid, user-friendly, cost-effective, and capable of providing precise and timely data for long-term pesticide surveillance. Consequently, it furnishes valuable insights to guide the safe utilization of pesticides in agricultural production.


Asunto(s)
Neonicotinoides , Residuos de Plaguicidas , Microextracción en Fase Sólida , Espectrometría de Masas en Tándem , Triazinas , Vigna , Vigna/química , Espectrometría de Masas en Tándem/métodos , Neonicotinoides/análisis , Microextracción en Fase Sólida/métodos , Cromatografía Líquida de Alta Presión/métodos , Triazinas/análisis , Residuos de Plaguicidas/análisis , Residuos de Plaguicidas/aislamiento & purificación , Frutas/química
11.
Artículo en Inglés | MEDLINE | ID: mdl-38841745

RESUMEN

Neural tube defects (NTDs) are characterized by the failure of neural tube closure during embryogenesis and are considered the most common and severe central nervous system anomalies during early development. Recent microRNA (miRNA) expression profiling studies have revealed that the dysregulation of several miRNAs plays an important role in retinoic acid (RA)-induced NTDs. However, the molecular functions of these miRNAs in NTDs remain largely unidentified. Here, we show that miR-10a-5p is significantly upregulated in RA-induced NTDs and results in reduced cell growth due to cell cycle arrest and dysregulation of cell differentiation. Moreover, the cell adhesion molecule L1-like ( Chl1) is identified as a direct target of miR-10a-5p in neural stem cells (NSCs) in vitro, and its expression is reduced in RA-induced NTDs. siRNA-mediated knockdown of intracellular Chl1 affects cell proliferation and differentiation similar to those of miR-10a-5p overexpression, which further leads to the inhibition of the expressions of downstream ERK1/2 MAPK signaling pathway proteins. These cellular responses are abrogated by either increased expression of the direct target of miR-10a-5p ( Chl1) or an ERK agonist such as honokiol. Overall, our study demonstrates that miR-10a-5p plays a major role in the process of NSC growth and differentiation by directly targeting Chl1, which in turn induces the downregulation of the ERK1/2 cascade, suggesting that miR-10a-5p and Chl1 are critical for NTD formation in the development of embryos.

12.
Pediatr Infect Dis J ; 43(9): e318-e321, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-38754001

RESUMEN

BACKGROUND: Mycoplasma pneumoniae ( M. pneumoniae ) is a common pathogen for community-acquired pneumonia and is also implicated in a broad array of extra-pulmonary manifestations. M. pneumoniae infection is rarely associated with concurrent central nervous system (CNS) and peripheral nervous system (PNS) involvement in children. METHODS: We report 2 patients who presented with acute encephalitis and polyradiculitis due to M. pneumoniae infection and review the literature to discuss the pathogenesis and treatment of concomitant CNS and PNS involvement associated with M. pneumoniae infection. RESULTS: We report two 6-year-old boys with M. pneumoniae antecedent infection who presented initially with impaired consciousness followed by limb weakness, limb pain and urinary retention, and responded well to immunotherapy. CONCLUSIONS: We described 2 patients who presented symptomatic combined CNS and PNS involvement with persistent urinary retention associated with M. pneumoniae infection. We found autoimmunity plays an important role and recommend that antibiotics and immunomodulators should be administered with concurrent CNS and PNS involvement associated with M. pneumoniae .


Asunto(s)
Mycoplasma pneumoniae , Neumonía por Mycoplasma , Humanos , Masculino , Niño , Neumonía por Mycoplasma/complicaciones , Neumonía por Mycoplasma/tratamiento farmacológico , Neumonía por Mycoplasma/microbiología , Antibacterianos/uso terapéutico , Encefalitis/microbiología , Encefalitis/tratamiento farmacológico
13.
ACS Sens ; 9(6): 2815-2825, 2024 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-38758028

RESUMEN

Bacterial toxins emerge as the primary triggers of foodborne illnesses, posing a significant threat to human health. To ensure food safety, it is imperative to implement point-of-care testing methods. Lateral flow biosensors (LFBs) based on gold nanoparticles (GNPs) have been commonly used for rapid detection, but their applicationis limited by low sensitivity. Based on the localized surface plasmon resonance and photothermal effect of dual gold nanoparticle conjugates (DGNPs), we developed a smartphone-integrated photothermal LFB (PLFB) with double-enhanced colorimetric and photothermal sensitivity. Through numerical simulations, we verified that DGNPs have significantly enhanced photothermal performance compared to single 15 nm GNPs (SGNPs), and applied DGNPs in PLFB for the detection of staphylococcus enterotoxin A (SEA). The colorimetric and photothermal limits of detection of DGNPs-based PLFB for SEA were 0.091 and 0.0038 ng mL-1, respectively. Compared with the colorimetric detection of the SGNPs-based LFB, the colorimetric detection sensitivity of the DGNPs-based PLFB was increased by 10.7 times, and the photothermal detection sensitivity was further improved by 255.3 times. Moreover, the PLFB exhibits robust reproducibility and exceptional specificity and is applicable for detecting SEA in milk samples. This smartphone-integrated PLFB based on DGNPs allows users to detect toxins simply, conveniently, and quickly and has huge application potential in the field of food safety.


Asunto(s)
Técnicas Biosensibles , Colorimetría , Enterotoxinas , Oro , Nanopartículas del Metal , Leche , Oro/química , Nanopartículas del Metal/química , Enterotoxinas/análisis , Técnicas Biosensibles/métodos , Colorimetría/métodos , Leche/química , Animales , Teléfono Inteligente , Límite de Detección , Resonancia por Plasmón de Superficie
14.
Ophthalmic Res ; 67(1): 275-281, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38588644

RESUMEN

INTRODUCTION: This study aimed to explore the functional connectivity of the primary visual cortex (V1) in children with anisometropic amblyopia by using the resting-state functional connectivity analysis method and determine whether anisometropic amblyopia is associated with changes in brain function. METHODS: Functional magnetic resonance imaging (fMRI) data were obtained from 16 children with anisometropia amblyopia (CAA group) and 12 healthy children (HC group) during the resting state. The Brodmann area 17 (BA17) was used as the region of interest, and the functional connection (FC) of V1 was analyzed in both groups. A two-sample t test was used to analyze the FC value between the two groups. Pearson's correlation was used to analyze the correlation between the mean FC value in the brain function change area of the CAA group and the best corrected visual acuity (BCVA) of amblyopia. p < 0.05 was considered statistically significant. RESULTS: There were no significant differences in age and sex between the CAA and HC groups (p > 0.05). Compared to the HC group, the CAA group showed lower FC values in BA17 and the left medial frontal gyrus, as well as BA17 and the left triangle inferior frontal gyrus. Conversely, the CAA group showed higher FC values in BA17 and the left central posterior gyrus. Notably, BCVA in amblyopia did not correlate with the area of change in mean FC in the brain function of the CAA group. CONCLUSION: Resting-state fMRI-based functional connectivity analysis indicates a significant alteration in V1 of children with anisometropic amblyopia. These findings contribute additional insights into the neuropathological mechanisms underlying visual impairment in anisometropic amblyopia.


Asunto(s)
Ambliopía , Imagen por Resonancia Magnética , Corteza Visual Primaria , Agudeza Visual , Humanos , Ambliopía/fisiopatología , Femenino , Masculino , Niño , Agudeza Visual/fisiología , Corteza Visual Primaria/fisiopatología , Anisometropía/fisiopatología , Mapeo Encefálico/métodos , Descanso/fisiología , Corteza Visual/fisiopatología , Corteza Visual/diagnóstico por imagen
15.
J Agric Food Chem ; 72(18): 10314-10327, 2024 May 08.
Artículo en Inglés | MEDLINE | ID: mdl-38661317

RESUMEN

Succinate dehydrogenase (SDH) is an integral component of the tricarboxylic acid cycle (TCA) and respiratory electron transport chain (ETC), targeted by succinate dehydrogenase inhibitors (SDHIs). Fusarium asiaticum is a prominent phytopathogen causing Fusarium head blight (FHB) on wheat. Here, we characterized the functions of the FaSdhA, FaSdhB, FaSdhC1, FaSdhC2, and FaSdhD subunits. Deletion of FaSdhA, FaSdhB, or FaSdhD resulted in significant growth defects in F. asiaticum. The FaSdhC1 or FaSdhC2 deletion mutants exhibited substantial reductions in fungal growth, conidiation, virulence, and reactive oxygen species (ROS). The FaSdhC1 expression was significantly induced by pydiflumetofen (PYD). The ΔFaSdhC1 mutant displayed hypersensitivity to SDHIs, whereas the ΔFaSdhC2 mutant exhibited resistance against most SDHIs. The transmembrane domains of FaSdhC1 are essential for regulating mycelial growth, virulence, and sensitivity to SDHIs. These findings provided valuable insights into how the two SdhC paralogues regulated the functional integrity of SDH, ROS homeostasis, and the sensitivity to SDHIs in phytopathogenic fungi.


Asunto(s)
Proteínas Fúngicas , Fungicidas Industriales , Fusarium , Homeostasis , Especies Reactivas de Oxígeno , Succinato Deshidrogenasa , Inhibidores Enzimáticos/farmacología , Proteínas Fúngicas/genética , Proteínas Fúngicas/metabolismo , Proteínas Fúngicas/química , Fungicidas Industriales/farmacología , Fusarium/efectos de los fármacos , Fusarium/enzimología , Fusarium/genética , Enfermedades de las Plantas/microbiología , Especies Reactivas de Oxígeno/metabolismo , Succinato Deshidrogenasa/genética , Succinato Deshidrogenasa/metabolismo , Succinato Deshidrogenasa/antagonistas & inhibidores , Triticum/microbiología , Virulencia/genética
16.
J Agric Food Chem ; 72(15): 8444-8459, 2024 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-38574108

RESUMEN

Cytochrome P450 sterol 14α-demethylase (CYP51) is a key enzyme involved in the sterol biosynthesis pathway and serves as a target for sterol demethylation inhibitors (DMIs). In this study, the 3D structures of three CPY51 paralogues from Calonectria ilicicola (C. ilicicola) were first modeled by AlphaFold2, and molecular docking results showed that CiCYP51A, CiCYP51B, or CiCYP51C proteins individually possessed two active pockets that interacted with DMIs. Our results showed that the three paralogues play important roles in development, pathogenicity, and sensitivity to DMI fungicides. Specifically, CiCYP51A primarily contributed to cell wall integrity maintenance and tolerance to abiotic stresses, and CiCYP51B was implicated in sexual reproduction and virulence, while CiCYP51C exerted negative regulatory effects on sterol 14α-demethylase activity within the ergosterol biosynthetic pathway, revealing its genus-specific function in C. ilicicola. These findings provide valuable insights into developing rational strategies for controlling soybean red crown rot caused by C. ilicicola.


Asunto(s)
Sistema Enzimático del Citocromo P-450 , Hypocreales , Lanosterol , Lanosterol/metabolismo , Simulación del Acoplamiento Molecular , Sistema Enzimático del Citocromo P-450/metabolismo , Esteroles , Esterol 14-Desmetilasa/química
17.
Front Plant Sci ; 15: 1356922, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38628367

RESUMEN

Among the bioactive compounds, lipid-soluble tanshinone is present in Salvia miltiorrhiza, a medicinal plant species. While it is known that ethephon has the ability to inhibit the tanshinones biosynthesis in the S. miltiorrhiza hairy root, however the underlying regulatory mechanism remains obscure. In this study, using the transcriptome dataset of the S. miltiorrhiza hairy root induced by ethephon, an ethylene-responsive transcriptional factor EIN3-like 1 (SmEIL1) was identified. The SmEIL1 protein was found to be localized in the nuclei, and confirmed by the transient transformation observed in tobacco leaves. The overexpression of SmEIL1 was able to inhibit the tanshinones accumulation to a large degree, as well as down-regulate tanshinones biosynthetic genes including SmGGPPS1, SmHMGR1, SmHMGS1, SmCPS1, SmKSL1 and SmCYP76AH1. These are well recognized participants in the tanshinones biosynthesis pathway. Further investigation on the SmEIL1 was observed to inhibit the transcription of the CPS1 gene by the Dual-Luciferase (Dual-LUC) and yeast one-hybrid (Y1H) assays. The data in this work will be of value regarding the involvement of EILs in regulating the biosynthesis of tanshinones and lay the foundation for the metabolic engineering of bioactive ingredients in S. miltiorrhiza.

18.
Lipids Health Dis ; 23(1): 122, 2024 Apr 27.
Artículo en Inglés | MEDLINE | ID: mdl-38678208

RESUMEN

BACKGROUND: Previous studies have demonstrated that trans fatty acids (TFAs) intake was linked to an increased risk of chronic diseases. As a novel systemic inflammatory biomarker, the clinical value and efficacy of the systemic immune-inflammation index (SII) have been widely explored. However, the association between TFAs and SII is still unclear. Therefore, the study aims to investigate the connection between TFAs and SII in US adults. METHODS: The study retrieved data from the National Health and Nutrition Examination Survey (NHANES) for the years 1999-2000 and 2009-2010. Following the exclusion of ineligible participants, the study encompassed a total of 3047 individuals. The research employed a multivariate linear regression model to investigate the connection between circulating TFAs and SII. Furthermore, the restricted cubic spline (RCS) model was utilized to evaluate the potential nonlinear association. Subgroup analysis was also conducted to investigate the latent interactive factors. RESULTS: In this investigation, participants exhibited a mean age of 47.40 years, with 53.91% of them being female. Utilizing a multivariate linear regression model, the independent positive associations between the log2-transformed palmitelaidic acid, the log2 transformed-vaccenic acid, the log2-transformed elaidic acid, the log2-transformed linolelaidic acid, and the log2-transformed-total sum of TFAs with the SII (all P < 0.05) were noted. In the RCS analysis, no nonlinear relationship was observed between the log2-transformed palmitelaidic acid, the log2 transformed-vaccenic acid, the log2-transformed elaidic acid, the log2-transformed linolelaidic acid, the log2-transformed-total sum of TFAs and the SII (all P for nonlinear > 0.05). For the stratified analysis, the relationship between the circulating TFAs and the SII differed by the obesity status and the smoking status. CONCLUSIONS: A positive association was investigated between three types of TFA, the sum of TFAs, and the SII in the US population. Additional rigorously designed studies are needed to verify the results and explore the potential mechanism.


Asunto(s)
Inflamación , Ácidos Grasos trans , Humanos , Ácidos Grasos trans/sangre , Femenino , Persona de Mediana Edad , Masculino , Estudios Transversales , Adulto , Inflamación/sangre , Inflamación/inmunología , Encuestas Nutricionales , Ácidos Oléicos , Modelos Lineales , Biomarcadores/sangre
19.
PLoS One ; 19(4): e0295986, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38635545

RESUMEN

INTRODUCTION: Although the association between nonalcoholic fatty liver disease (NAFLD) and vitamin C has been well studied, the effects of dietary potassium intake on this relationship are still unclear. Thus, this study aimed to determine the effects of dietary potassium intake on the association between vitamin C and NAFLD. METHODS: We performed a cross-sectional learn about with 9443 contributors the usage of 2007-2018 NHANES data. Multiple logistic regression evaluation has been utilized to check out the affiliation of dietary vitamin C intake with NAFLD and advanced hepatic fibrosis (AHF). Subsequently, we plotted a smoothed match curve to visualize the association. Especially, the analysis of AHF was conducted among the NAFLD population. In addition, stratified evaluation used to be developed primarily based on demographic variables to verify the steadiness of the results. Effect amendment by way of dietary potassium intake used to be assessed via interplay checks between vitamin C and NAFLD in the multivariable linear regression. RESULTS: In this cross-sectional study, we found that vitamin C was negatively related to NAFLD and AHF. The relationship between vitamin C and NAFLD was different in the low, middle and high potassium intake groups. Furthermore, potassium intake significantly modified the negative relationship between vitamin C and NAFLD in most of the models. CONCLUSION: Our research showed that potassium and vitamin C have an interactive effect in reducing NAFLD, which may have great importance for clinical medication.


Asunto(s)
Enfermedad del Hígado Graso no Alcohólico , Adulto , Humanos , Estados Unidos/epidemiología , Enfermedad del Hígado Graso no Alcohólico/epidemiología , Ácido Ascórbico , Estudios Transversales , Encuestas Nutricionales , Potasio , Potasio en la Dieta , Vitaminas , Ingestión de Alimentos
20.
Sci Rep ; 14(1): 5745, 2024 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-38459115

RESUMEN

Semantic segmentation of remote sensing images (RSI) is an important research direction in remote sensing technology. This paper proposes a multi-feature fusion and channel attention network, MFCA-Net, aiming to improve the segmentation accuracy of remote sensing images and the recognition performance of small target objects. The architecture is built on an encoding-decoding structure. The encoding structure includes the improved MobileNet V2 (IMV2) and multi-feature dense fusion (MFDF). In IMV2, the attention mechanism is introduced twice to enhance the feature extraction capability, and the design of MFDF can obtain more dense feature sampling points and larger receptive fields. In the decoding section, three branches of shallow features of the backbone network are fused with deep features, and upsampling is performed to achieve the pixel-level classification. Comparative experimental results of the six most advanced methods effectively prove that the segmentation accuracy of the proposed network has been significantly improved. Furthermore, the recognition degree of small target objects is higher. For example, the proposed MFCA-Net achieves about 3.65-23.55% MIoU improvement on the dataset Vaihingen.

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