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1.
Small ; : e2407207, 2024 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-39359036

RESUMO

Wearable electronic textiles (e-textiles) are transforming personalized healthcare through innovative applications. However, integrating electronics into textiles for e-textile manufacturing exacerbates the rapidly growing issues of electronic waste (e-waste) and textile recycling due to the complicated recycling and disposal processes needed for mixed materials, including textile fibers, electronic materials, and components. Here, first closed-loop recycling for wearable e-textiles is reported by incorporating the thermal-pyrolysis of graphene-based e-textiles to convert them into graphene-like electrically conductive recycled powders. A scalable pad-dry coating technique is then used to reproduce graphene-based wearable e-textiles and demonstrate their potential healthcare applications as wearable electrodes for capturing electrocardiogram (ECG) signals and temperature sensors. Additionally, recycled graphene-based textile supercapacitor highlights their potential as sustainable energy storage devices, maintaining notable durability and retaining ≈94% capacitance after 1000 cycles with an areal capacitance of 4.92 mF cm⁻2. Such sustainable closed-loop recycling of e-textiles showcases the potential for their repurposing into multifunctional applications, promoting a circular approach that potentially prevents negative environmental impact and reduces landfill disposal.

2.
Talanta ; 281: 126838, 2024 Sep 07.
Artigo em Inglês | MEDLINE | ID: mdl-39255623

RESUMO

The analysis of microRNAs (miRNAs) in exosomes is of great importance for noninvasive early disease diagnosis. However, current techniques to detect exosomal miRNAs is hampered either by laborious exosome isolation or low abundance of miRNAs in exosomes. Here, we developed a microfluidic chemiluminescence (CL) analysis method for the multiplexed detection of exosomal miR-21 and miR-155. The microfluidic device contained three parts: a snake-shaped channel for fully mixing chemiluminescent reagents, a ship-shaped channel modified with CD63 protein aptamer for capturing exosomes, and another two parallel ship-shaped channels for hybridization chain reaction (HCR) amplification and CL detection. The multiple signal amplification was realized by Y-shaped arrays, HCR amplification, and poly-HRP catalyzed CL reaction. Using this multiple signal amplification method, our microfluidic CL biosensor achieves a limit of detection of miRNAs of 0.49 fM, with a linear range of 1 fM-10 pM, which is better or comparable to previously reported biosensors. What's more, the proposed microfluidic biosensor exhibits great specificity and selectivity to the target miRNA. Moreover, the microfluidic CL strategy exhibited excellent accuracy and could significantly distinguish different cancer subtypes as well as cancer patients and healthy people. These results suggest that this simple, high sensitive, and more accurate analytical strategy by analyzing different types of exosomal miRNAs has the potential applications in cancer diagnosis and stage monitoring.

3.
BMC Cancer ; 24(1): 1120, 2024 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-39251968

RESUMO

BACKGROUND: Transcatheter arterial chemoembolization (TACE) combined with targeted therapy and immunotherapy can significantly improve the prognosis of patients with hepatocellular carcinoma (HCC). T-cell immunoreceptor with immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domains (TIGIT) is a novel immunosuppressive molecule. This study aimed to analyze the clinical correlation between TIGIT expression on T cells and patients with HCC. METHODS: Clinical data from 140 patients with HCC were retrospectively collected, and TIGIT expression on T cells was examined in each patient. Patients were subsequently divided into high- and low-expression groups, and their prognosis was analyzed. RESULTS: Patients with a high TIGIT expression on their T cells at baseline had a larger tumor volume, later staging, higher proportion of regulatory T cells, higher blood concentrations of interleukin (IL)-6 and IL-10, and lower interferon-γ concentrations. Following TACE, CD155 concentration decreased; however, TACE did not affect TIGIT expression on T cells. Additionally, among patients receiving TACE combined with apatinib and camrelizumab treatment, patients with a high TIGIT expression on T cells had significantly shorter progression-free survival (PFS) and overall survival times than those of patients in the low-expression group. Patients receiving TACE combined with apatinib and camrelizumab treatment with higher TIGIT expression have shorter PFS time than those receiving TACE combined with apatinib treatment. CONCLUSIONS: Patients with HCC that have a high TIGIT expression on their T cells exhibited poorer baseline characteristics, immunosuppressive status, and prognosis after receiving TACE combined with apatinib and camrelizumab and maybe more suited to receive TACE combined with apatinib treatment instead.


Assuntos
Carcinoma Hepatocelular , Quimioembolização Terapêutica , Neoplasias Hepáticas , Receptores Imunológicos , Humanos , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/imunologia , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/metabolismo , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/imunologia , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/metabolismo , Masculino , Feminino , Prognóstico , Receptores Imunológicos/metabolismo , Pessoa de Meia-Idade , Estudos Retrospectivos , Quimioembolização Terapêutica/métodos , Idoso , Linfócitos T/imunologia , Linfócitos T/metabolismo , Adulto , Receptores Virais/metabolismo
4.
Nat Commun ; 15(1): 7928, 2024 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-39256403

RESUMO

Multiple synchronous lung cancers (MSLCs) constitute a unique subtype of lung cancer. To explore the genomic and immune heterogeneity across different pathological stages of MSLCs, we analyse 16 MSLCs from 8 patients using single-cell RNA-seq, single-cell TCR sequencing, and bulk whole-exome sequencing. Our investigation indicates clonally independent tumours with convergent evolution driven by shared driver mutations. However, tumours from the same individual exhibit few shared mutations, indicating independent origins. During the transition from pre-invasive to invasive adenocarcinoma, we observe a shift in T cell phenotypes characterized by increased Treg cells and exhausted CD8+ T cells, accompanied by diminished cytotoxicity. Additionally, invasive adenocarcinomas exhibit greater neoantigen abundance and a more diverse TCR repertoire, indicating heightened heterogeneity. In summary, despite having a common genetic background and environmental exposure, our study emphasizes the individuality of MSLCs at different stages, highlighting their unique genomic and immune characteristics.


Assuntos
Adenocarcinoma de Pulmão , Neoplasias Pulmonares , Mutação , Análise de Célula Única , Humanos , Adenocarcinoma de Pulmão/genética , Adenocarcinoma de Pulmão/imunologia , Adenocarcinoma de Pulmão/patologia , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/imunologia , Neoplasias Pulmonares/patologia , Sequenciamento do Exoma , Feminino , Genômica , Masculino , Linfócitos T CD8-Positivos/imunologia , Pessoa de Meia-Idade , Heterogeneidade Genética , Idoso , Receptores de Antígenos de Linfócitos T/genética , Receptores de Antígenos de Linfócitos T/imunologia , Linfócitos T Reguladores/imunologia , Neoplasias Primárias Múltiplas/genética , Neoplasias Primárias Múltiplas/imunologia , Neoplasias Primárias Múltiplas/patologia
5.
Sensors (Basel) ; 24(17)2024 Aug 29.
Artigo em Inglês | MEDLINE | ID: mdl-39275518

RESUMO

Highly efficient surface acoustic wave (SAW) transducers offer significant advantages for microfluidic atomization. Aiming at highly efficient atomization, we innovatively accomplish dual-surface simultaneous atomization by strategically positioning the liquid supply outside the IDT aperture edge. Initially, we optimize Lamb wave transducers and specifically investigate their performance based on the ratio of substrate thickness to acoustic wavelength. When this ratio h/λ is approximately 1.25, the electromechanical coupling coefficient of A0-mode Lamb waves can reach around 5.5% for 128° Y-X LiNbO3. We then study the mechanism of droplet atomization with the liquid supply positioned outside the IDT aperture edge. Experimental results demonstrate that optimized Lamb wave transducers exhibit clear dual-surface simultaneous atomization. These transducers provide equivalent amplitude acoustic wave vibrations on both surfaces, causing the liquid thin film to accumulate at the edges of the dual-surface and form a continuous mist.

6.
Ann Thorac Surg ; 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39293749

RESUMO

BACKGROUND: Esophagectomy can be performed using various surgical techniques. The aim of this study was to understand the impact of surgery on long-term survival for esophageal cancer. METHODS: Between May 2010 and July 2012, 300 patients with esophageal cancer were randomly assigned to undergo esophagectomy with either left or right thoracic approach. Disease-free survival (DFS) and overall survival (OS) were compared based on the per-protocol principle among 286 patients with esophageal squamous cell carcinoma determined by postoperative pathology (146 in the right and 140 in the left thoracic arms). RESULTS: The median DFS was 92 months in the right and 41 months in the left thoracic arms (hazard ratio, 0.73; 95% confidence interval, 0.54-0.99; P=0.045), with a cumulative 10-year DFS of 47.6% and 37.5%, respectively. The median OS was 136 months in the right and 99 months in the left thoracic arms (hazard ratio, 0.75; 95% confidence interval, 0.54-1.04; P=0.081), with cumulative 10-year OS rates of 52.4% and 43.7%, respectively. DFS and OS were comparable between the two arms for patients without lymph node metastasis. Conversely, for patients with lymph node metastasis, 10-year DFS were 32.7% and 21.4%, respectively (P=0.018), and 10-year OS of the right and left thoracic arms were 37.9% and 25.9%, respectively (P=0.012). CONCLUSIONS: Compared to the left thoracic approach, patients who underwent esophagectomy via the right thoracic approach had better 10-year survival rates, and the survival benefit was significant for those with lymph node metastasis.

7.
ACS Appl Mater Interfaces ; 16(37): 49845-49855, 2024 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-39248467

RESUMO

Wearable strain sensors play a pivotal role in real-time human motion detection and health monitoring. Traditional fabric-based strain sensors, typically with a positive Poisson's ratio, face challenges in maintaining sensitivity and comfort during human motion due to conflicting resistance changes in different strain directions. In this work, high-performance stretchable strain sensors are developed based on graphene-modified auxetic fabrics (GMAF) for human motion detection in smart wearable devices. The proposed GMAF sensors, with a negative Poisson's ratio achieved through commercially available warp-knitting technology, exhibit an 8-fold improvement in sensitivity compared to conventional plain fabric sensors. The unique auxetic fabric structure enhances sensitivity by synchronizing resistance changes in both wale and course directions. The GMAF sensors demonstrate excellent washability, showing only slight degradation in auxeticity and an acceptable increase in resistance after 10 standard wash cycles. The GMAF sensors maintain stability under different strain levels and various motion frequencies, emphasizing their dynamic performance. The sensors exhibit superior conformability to joint movements, which effectively monitor a full range of motions, including joint bending, sports activities, and subtle actions like coughing and swallowing. The research underscores a promising approach to achieve industrial-scale production of wearable sensors with improved performance and comfort through fabric structure design.


Assuntos
Grafite , Têxteis , Dispositivos Eletrônicos Vestíveis , Humanos , Grafite/química , Movimento/fisiologia , Monitorização Fisiológica/instrumentação , Monitorização Fisiológica/métodos , Movimento (Física)
8.
Discov Oncol ; 15(1): 444, 2024 Sep 13.
Artigo em Inglês | MEDLINE | ID: mdl-39271557

RESUMO

To explore the presentation and control of CNS adverse reactions in patients with ALK-positive NSCLC treated with lorlatinib. This study includes a retrospective case report from Sir Run Run Shaw Hospital on a lorlatinib-treated patient with CNS adverse reactions and a systematic literature review of similar cases until January 2023. The report detailed a case of a 74-year-old male with Grade III CNS adverse reactions 25 days after starting lorlatinib, which were reversible with dose modification and pharmacotherapy. The review indicated a 19.39% occurrence rate of such reactions, with a 17% improvement rate post-dose adjustment. CNS adverse reactions frequently occur in ALK-positive NSCLC patients on lorlatinib, yet they are reversible with appropriate management. Research should continue to optimize treatment protocols to decrease these reactions' frequency.

9.
Mol Biol Cell ; 35(11): ar135, 2024 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-39259761

RESUMO

Eukaryotic cells encode thousands of secretory and membrane proteins, many of which are cotranslationally translocated into the endoplasmic reticulum (ER). Nascent polypeptides entering the ER encounter a network of molecular chaperones and enzymes that facilitate their folding. A rate-limiting step for some proteins is the trans-to-cis isomerization of the peptide bond between proline and the residue preceding it. The human ER contains six prolyl isomerases, but the function, organization, and substrate range of these proteins is not clear. Here we show that the metazoan-specific, prolyl isomerase FKBP11 binds to ribosome-translocon complexes (RTCs) in the ER membrane, dependent on its single transmembrane domain and a conserved, positively charged region at its cytosolic C-terminus. High-throughput mRNA sequencing shows selective engagement with ribosomes synthesizing secretory and membrane proteins with long translocated segments, and functional analysis shows reduced stability of two such proteins, EpCAM and PTTG1IP, in cells depleted of FKBP11. We propose that FKBP11 is a translocon accessory factor that acts on a broad range of soluble secretory and transmembrane proteins during their synthesis at the ER.


Assuntos
Retículo Endoplasmático , Peptidilprolil Isomerase , Transporte Proteico , Ribossomos , Proteínas de Ligação a Tacrolimo , Humanos , Proteínas de Ligação a Tacrolimo/metabolismo , Retículo Endoplasmático/metabolismo , Ribossomos/metabolismo , Peptidilprolil Isomerase/metabolismo , Proteínas de Membrana/metabolismo , Biossíntese de Proteínas , Células HEK293 , Células HeLa , Dobramento de Proteína , Ligação Proteica
10.
Urology ; 2024 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-39304071

RESUMO

OBJECTIVE: To investigate the association between the use of proton pump inhibitors (PPIs) and overactive bladder (OAB) in adults. METHODS: This study adopts a cross-sectional approach to scrutinize data derived from the National Health and Nutrition Examination Survey (NHANES), spanning from 2007 to 2018. It employs multivariable logistic regression along with restricted cubic splines (RCS) to investigate the relationship between the use of PPI and the incidence of OAB. Additionally, through interaction and stratification analyses, the study delves into how specific factors may influence this correlation. RESULTS: A total of 24,458 adults participated in this study. Individuals using PPIs exhibited higher rates of nocturia, urge incontinence, and OAB compared to non-users. After full adjustment, PPI users had a significantly increased risk of developing OAB (OR=1.36, 95%CI: 1.17-1.60). Moreover, with each year of continued PPI usage, the frequency of OAB symptoms escalated by 3% (P = .01). Further examinations within various subgroups maintained a uniform direction in these effect estimates. CONCLUSION: The findings of this research highlight a noteworthy positive link between the use of PPIs and the emergence of OAB among adults. Moreover, it was observed that an extended period of using PPIs correlates with a heightened likelihood of encountering OAB.

11.
ACS Synth Biol ; 13(9): 2982-2991, 2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39250825

RESUMO

Phenazine-based small molecules are nitrogen-containing heterocyclic compounds with diverse bioactivities and electron transfer properties that exhibit promising applications in pharmaceutical and electrochemical industries. However, the biosynthetic mechanism of highly substituted natural phenazines remains poorly understood. In this study, we report the direct cloning and heterologous expression of the lomofungin biosynthetic gene cluster (BGC) from Streptomyces lomondensis S015. Reconstruction and overexpression of the BGCs in Streptomyces coelicolor M1152 resulted in eight phenazine derivatives including two novel hybrid phenazine metabolites, and the biosynthetic pathway of lomofungin was proposed. Furthermore, gene deletion suggested that NAD(P)H-dependent oxidoreductase gene lomo14 is a nonessential gene in the biosynthesis of lomofungin. Cytotoxicity evaluation of the isolated phenazines and lomofungin was performed. Specifically, lomofungin shows substantial inhibition against two human cancer cells, HCT116 and 5637. These results provide insights into the biosynthetic mechanism of lomofungin, which will be useful for the directed biosynthesis of natural phenazine derivatives.


Assuntos
Família Multigênica , Fenazinas , Streptomyces , Fenazinas/metabolismo , Streptomyces/genética , Streptomyces/metabolismo , Humanos , Linhagem Celular Tumoral , Vias Biossintéticas/genética , Células HCT116 , Streptomyces coelicolor/genética , Streptomyces coelicolor/metabolismo , Clonagem Molecular
12.
Nat Commun ; 15(1): 7891, 2024 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-39256395

RESUMO

The identification effector targets and characterization of their functions are crucial for understanding pathogen infection mechanisms and components of plant immunity. Here, we identify the effector UgsL, a ustilaginoidin synthetase with a key role in regulating virulence of the rice false smut fungus Ustilaginoidea virens. Heterologous expression of UgsL in rice (Oryza sativa) enhances plant susceptibility to multiple pathogens, and host-induced gene silencing of UgsL enhances plant resistance to U. virens, indicating that UgsL inhibits rice immunity. UgsL interacts with STRUBBELIG RECEPTOR KINASE 3 (OsSRF3). Genome editing and overexpression of OsSRF3 demonstrate that OsSRF3 plays a pivotal role in the resistance of rice to multiple pathogens. Remarkably, overexpressing OsSRF3 enhances resistance without adversely affecting plant growth or yield. We show that BRASSINOSTEROID RECEPTOR-ASSOCIATED KINASE 1 (OsBAK1) interacts with and phosphorylates OsSRF3 to activate pathogen-triggered immunity, inducing the mitogen-activated protein kinase cascade, a reactive oxygen species burst, callose deposition, and expression of defense-related genes. UgsL interferes with the phosphorylation of OsSRF3 by OsBAK1. Furthermore, UgsL mediates OsSRF3 degradation by facilitating its association with the ubiquitin-26S proteasome. Our results reveal that OsSRF3 positively regulates immunity in rice and that UgsL mediates its degradation, thereby inhibiting the activation of OsBAK1-OsSRF3-mediated immune pathways.


Assuntos
Regulação da Expressão Gênica de Plantas , Oryza , Doenças das Plantas , Imunidade Vegetal , Proteínas de Plantas , Resistência à Doença/genética , Proteínas Fúngicas/metabolismo , Proteínas Fúngicas/genética , Interações Hospedeiro-Patógeno , Hypocreales/patogenicidade , Hypocreales/genética , Oryza/microbiologia , Oryza/imunologia , Oryza/genética , Fosforilação , Doenças das Plantas/microbiologia , Doenças das Plantas/imunologia , Proteínas de Plantas/metabolismo , Proteínas de Plantas/genética , Plantas Geneticamente Modificadas , Proteínas Quinases/metabolismo , Proteínas Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Serina-Treonina Quinases/genética , Espécies Reativas de Oxigênio/metabolismo
13.
Anal Chem ; 2024 Sep 17.
Artigo em Inglês | MEDLINE | ID: mdl-39287475

RESUMO

The ability to dive deep into specific rare cell populations is critical for understanding tissue physiology and pathology across various biological domains. As single-cell RNA-seq flourishes, many newly discovered cell subtypes are defined by their transcriptomic markers. However, our ability to retrieve and analyze cells based on their nucleic acid markers remains underdeveloped. Here, we present Double Emulsion PCR-Initiated Cell sorting and Transcriptomic Sequencing (DEPICT-seq), a high-throughput droplet nucleic acid cytometry method that integrates batch cell fixation for cellular information preservation, double emulsion digital PCR-based cell sorting to target nucleic acid markers of interest, and in-depth full-length transcriptomic analyses at single-cell resolution. We utilize DEPICT-seq to isolate and characterize T cell receptor (TCR)-engineered T cells within a mixed population and also demonstrate a variation of the workflow by incorporating an RNase H-dependent PCR step to enrich full-length TCR sequences for paired single-cell TCR sequencing and transcriptomic profiling.

14.
J Hepatocell Carcinoma ; 11: 1689-1697, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39247518

RESUMO

Background and Objectives: Transarterial chemoembolization (TACE) and 125I seed implantation are methods used to treat hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT), PVTT often associated with arterioportal shunts(APS), there are few reports on the combined use of TACE and 125I seed implantation for such patients. This study aimed to evaluate the efficacy and safety of TACE combined with PVTT 125I seed implantation in the treatment of HCC patients with APS. Methods: Forty-two patients diagnosed with HCC combined with PVTT and APS between January 2020 and December 2021 were included. Appropriate materials were selected to transarterial embolization of the APS, and 125I seeds were implanted into the PVTT. The occlusion effect was observed and recorded after 3 months, the efficacy of intrahepatic lesions and PVTT was evaluated, and the patient survival, prognostic factors affecting APS recanalization were analyzed. Results: All 42 patients completed the follow-up three months after treatment. The immediate APS improvement rate was 100%, and the APS improvement rate at the three-month follow-up was 64.29%. The disease control rates of PVTT and intrahepatic lesions were 81.00% and 78.60%, respectively. The patients' 6-month and 12-month survival rates were 78.6% and 46.8%. The median OS for all patients was 11.90 months, and the median OS was 13.30 months in the APS effective treatment group and 8.30 months in the ineffective group. The PVTT type is the only independent factor affecting APS recanalization. (P=0.02). Conclusion: For HCC patients with PVTT and APS, TACE combine with 125I seed implantation in PVTT is a potentially effective and safe method that contributes to prolonging patient survival.

15.
J Hazard Mater ; 479: 135726, 2024 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-39241361

RESUMO

Efficient management of pollutant risks in water bodies is crucial for public health and aquatic ecosystem sustainability. However, the toxicities of pollutants, such as ammonia nitrogen (NH3-N), are often affected by multiple water quality factors, including the pH and water temperature. Extensive spatial and temporal variability in these factors hinders tailor-made management of risk. This study used high-frequency monitoring data collected over 1 year to evaluate the long-term NH3-N risk in China's aquatic ecosystems. High accuracy and interpretability were achieved by decomposing NH3-N risk into the contributions of key influencing factors using random forest models and Shapley Additive Explanations. Two distinct types of NH3-N risk hotspots were identified across 18 cities: 15 cities with high NH3-N concentrations and 3 cities with low environmental carrying capacity due to high pH levels or elevated water temperatures. For the former, rapid NH3-N abatement measures are necessary to bring NH3-N concentrations back below the environmental capacity. For the latter, it is recommended that NH3-N related industries are relocated to regions with high environmental capacities because fragile environments are not suitable for such industries. Importantly, this study investigated methods for attributing pollutant risks in the context of non-linear influencing factors, and the risk of NH3-N was predicted to increase by 6.1 % by the end of 2100 in the context of increasing temperatures under the SSP 2-4.5 scenario. The methodology is also adaptable and suitable for integration into global ecosystem risk management efforts to balance development and aquatic ecological sustainability.

16.
Environ Sci Technol ; 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39344972

RESUMO

Resistant bacteria have always been of research interest worldwide. In the urban water system, the increased disinfectant usage gives more chances for undesirable disinfection-resistant bacteria. As the strongest oxidative disinfectant in large-scale water treatment, ozone might select ozone-resistant bacteria (ORB), which, however, have rarely been reported and are inexplicit for their resistant mechanisms and physiological characteristics. In this study, six strains of ORB were screened from a water reclamation plant in Beijing. Three of them (O7, CR19, and O4) were more resistant to ozone than all previously reported ORB or even spores. The ozone consumption capacity of extracellular polymeric substances and cell walls was proved to be the main sources of bacterial ozone resistance, rather than intracellular antioxidant enzymes. The transcriptome results elucidated that strong ORB possessed a combined antioxidant mechanism consisting of the enhanced transcription of protein synthesis, protein export, and polysaccharide export genes (LptF, LptB, NodJ, LivK, LviG, MetQ, MetN, and GltU). This study confirmed the existence of ORB in urban water systems and brought doubts to the idea of a traditional control strategy against chlorine-resistant bacteria. A salient "trade-off" effect between the ozone resistance and propagation ability indicated the weakness and potential control approaches of ORB.

17.
Se Pu ; 42(10): 963-971, 2024 Oct.
Artigo em Chinês | MEDLINE | ID: mdl-39327660

RESUMO

As common industrial raw materials, malachite green (MG) and Cr(Ⅵ) generally coexist in waste liquids discharged from the paper printing, leather, and textile industries, causing serious harm to humans and the environment. Therefore, developing an effective method for the synergistic removal of MG and Cr(Ⅵ) from aquatic environments is of great research value. In this work, the non-homogeneous Fenton-like catalysts, namely, EDDS-Silica and EDDS-Co2+-Silica were successfully prepared using ethylenediamine disuccinic acid (EDDS) and silica gel (Silica) as raw materials, and a non-homogeneous Fenton-like catalytic method was developed for the efficient and synergistic removal of MG and Cr(Ⅵ) from wastewater. EDDS-Silica and EDDS-Co2+-Silica were analyzed using Fourier infrared spectroscopy and X-ray photoelectron spectroscopy to determine their structural composition and elemental contents. The catalytic degradation and removal effects of these materials in an MG single-waste system were also investigated. The results demonstrated that the incorporation of both materials can overcome the limitation of the conventional Fenton reaction, which is its applicability to acidic environments only. Moreover, EDDS-Co2+-Silica showed better degradation effects on MG than EDDS-Silica. Quantitative calculations based on density functional theory were used to predict the optimal coordination forms between Co2+and EDDS-Silica as well as the MG structure. The lowest unoccupied and highest occupied molecular orbitals of the catalysts were then used to predict the active sites on which MG tends to capture or release electrons during the degradation reaction. The optimal conditions for the synergistic removal of MG and Cr(Ⅵ) from a binary system using EDDS-Co2+-Silica were further investigated under different influencing factors. The results showed that EDDS-Co2+-Silica still had excellent catalytic effect on the degradation rate of MG in the range of pH 3-7, and the optimal conditions were as follows: solution pH, 7; degradation time, 1 h; temperature, 25 ℃; H2O2 concentration, 20 mmol/L; and the initial mass concentration of Cr(Ⅵ), 25 mg/L. Under the above conditions, the degradation rate was increased from 87.25% to 96.67% compared with that in the MG monosystem. Obvious enhancements in degradation effect and efficiency confirmed that the incorporation of EDDS-Co2+-Silica was favorable for the synergistic removal of MG and Cr(Ⅵ) in the binary system. Strongly oxidizing Cr(Ⅵ) can participate in the Fenton reaction, thus promoting MG degradation over a wide pH range. Thus, a positive synergistic effect exists between MG and Cr(Ⅵ). Considering that a large number of metal ions remained in the solution after the degradation reaction, EDDS-Silica was added to the degradation solution, and adsorption experiments were performed for 4 h at 30 ℃to adsorb and remove Cr and Fe via the strong chelating property of EDDS. The total residual mass concentrations of Cr and Fe were 4.96 and 1.02 mg/L, respectively, which meet national emission standards. These findings indicate that EDDS-Silica has good effects on the removal of residual metal ions after the nonhomogeneous Fenton reaction. As heterogeneous Fenton-like catalysts, the aminopolycarboxylic acid-modified materials proposed in this study can simultaneously promote the Fenton reaction and remove residual metal ions, thereby effectively removing MG and Cr(Ⅵ) from the binary system while ensuring that the content of residual metal ions in the system meets environmental emission standards. This study has broad application prospects in dye degradation and heavy-metal-ion wastewater treatment, and provides a reference value and theoretical basis for the development of other similar ligand-modified materials.

18.
ACS Nano ; 18(36): 24872-24897, 2024 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-39197041

RESUMO

Potential exposure to cobalt nanoparticles (CoNPs) occurs in various fields, including hard alloy industrial production, the increasing use of new energy lithium-ion batteries, and millions of patients with metal-on-metal joint prostheses. Evidence from human, animal, and in vitro experiments suggests a close relationship between CoNPs and neurotoxicity. However, a systematic assessment of central nervous system (CNS) impairment due to CoNPs exposure and the underlying molecular mechanisms is lacking. In this study, we found that CoNPs induced neurodegenerative damage both in vivo and in vitro, including cognitive impairment, ß-amyloid deposition and Tau hyperphosphorylation. CoNPs promoted the formation of autophagosomes and impeding autophagosomal-lysosomal fusion in vivo and in vitro, leading to toxic protein accumulation. Moreover, CoNPs exposure reduced the level of transcription factor EB (TFEB) and the abundance of lysosome, causing a blockage in autophagosomal-lysosomal fusion. Interestingly, overexpression of long noncoding RNA NR_030777 mitigated CoNPs-induced neurodegenerative damage in both in vivo and in vitro models. Fluorescence in situ hybridization assay revealed that NR_030777 directly binds and stabilizes TFEB mRNA, alleviating the blockage of autophagosomal-lysosomal fusion and ultimately restoring neurodegeneration induced by CoNPs in vivo and in vitro. In summary, our study demonstrates that autophagic dysfunction is the main toxic mechanism of neurodegeneration upon CoNPs exposure and NR_030777 plays a crucial role in CoNPs-induced autophagic dysfunction. Additionally, the proposed adverse outcome pathway contributes to a better understanding of CNS toxicity assessment of CoNPs.


Assuntos
Autofagossomos , Cobalto , Lisossomos , Nanopartículas Metálicas , RNA Longo não Codificante , Lisossomos/metabolismo , Lisossomos/efeitos dos fármacos , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Autofagossomos/metabolismo , Autofagossomos/efeitos dos fármacos , Cobalto/química , Cobalto/farmacologia , Animais , Nanopartículas Metálicas/química , Humanos , Camundongos , Masculino , Autofagia/efeitos dos fármacos , Camundongos Endogâmicos C57BL , Doenças Neurodegenerativas/metabolismo , Doenças Neurodegenerativas/patologia , Doenças Neurodegenerativas/induzido quimicamente
19.
Artigo em Inglês | MEDLINE | ID: mdl-39105886

RESUMO

Selenium is among the important trace elements that influence the quality of meat. Although it has been established that the gut microbiota is closely associated with selenium metabolism, it has yet to be determined whether these microbes influence the accumulation of selenium in muscles. To identify gut microbiota that potentially influence the deposition of selenium in muscles, we compared the colonic microbial composition of pigs characterized by high and low contents of selenium in the longissimus dorsi muscle and accordingly detected a higher abundance of the bacterium Prevotella copri (P. copri) in pigs with a higher muscle selenium content. To verify the effect of P. copri, 16 pigs weighing approximately 61 kg were fed either a basal diet or a basal diet supplemented with P. copri (1.0 × 1010 CFU/kg feed) for 45 days. The results revealed significant increases in the contents of selenium and selenoprotein in the serum and longissimus dorsi muscle of fattening pigs fed the P. copri-supplemented diet. Moreover, supplementing the feed of pigs with P. copri was observed to promote significant improvement in the antioxidant capacity and quality of meat, including drip loss, pH, and meat color. In conclusion, our findings in this study indicate that P. copri has potential utility as a dietary supplement for improving the selenium status and meat quality in fattening pigs.

20.
J Health Popul Nutr ; 43(1): 120, 2024 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-39127726

RESUMO

OBJECTIVE: The underlying mechanisms of Overactive Bladder (OAB) remain unclear. This research is designed to investigate the correlation between the intake of dietary live microorganisms and OAB. METHODS: This analysis encompasses a cross-sectional study of broad population information gathered from the National Health and Nutrition Examination Surveys (NHANES) spanning the years 2007 to 2018. Participants were categorized into three groups-low, medium, and high-according to their consumption of dietary live microorganisms, as per the Sanders Dietary Active Microbiota Classification System. We utilized a weighted logistic regression model, restricted cubic spline (RCS), and subgroup analyses to investigate the relationship between dietary live microorganism intake and OAB. RESULTS: This research encompassed 16,795 subjects. The incidence of OAB was reduced in the group consuming a high amount of live dietary microbes compared to the groups with low and medium intake of such microbes. After detailed adjustments for covariates, analysis revealed that participants in the high live dietary microbe group had notably reduced odds of OAB compared to those in the low live dietary microbe group (OR: 0.84, 95% CI: 0.71-0.99, p = 0.03). RCS analysis indicated a nonlinear correlation between high dietary active microbiota intake and the incidence of OAB. CONCLUSION: This research emphasizes the potential advantages of a high dietary intake of active microbiota for preventing OAB. These findings support incorporating active microbiota into dietary guidelines, demonstrating their connection with a decreased incidence of OAB.


Assuntos
Dieta , Inquéritos Nutricionais , Bexiga Urinária Hiperativa , Humanos , Bexiga Urinária Hiperativa/epidemiologia , Estudos Transversais , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Estados Unidos/epidemiologia , Dieta/estatística & dados numéricos , Incidência , Idoso
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