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1.
Anal Chem ; 96(5): 2068-2077, 2024 02 06.
Artigo em Inglês | MEDLINE | ID: mdl-38259216

RESUMO

Detection of nucleic acids from a single multiplexed and amplification-free test is critical for ensuring food safety, clinical diagnostics, and environmental monitoring. In this study, we introduced a mesophilic Argonaute protein from Clostridium butyricum (CbAgo), which exhibits nucleic acid endonuclease activity, to achieve a programmable, amplification-free system (PASS) for rapid nucleic acid quantification at ambient temperatures in one pot. By using CbAgo-mediated binding with specific guide DNA (gDNA) and subsequent targeted cleavage of wild-type target DNAs complementary to gDNA, PASS can detect multiple foodborne pathogen DNA (<102 CFU/mL) simultaneously. The fluorescence signals were then transferred to polydisperse emulsions and analyzed by using deep learning. This simplifies the process and increases the suitability of polydisperse emulsions compared to traditional digital PCR, which requires homogeneous droplets for accurate detection. We believe that PASS has the potential to become a next-generation point-of-care digital nucleic acid detection method.


Assuntos
Técnicas Biossensoriais , Aprendizado Profundo , Ácidos Nucleicos , Proteínas Argonautas/metabolismo , DNA/análise , Técnicas Biossensoriais/métodos , Técnicas de Amplificação de Ácido Nucleico/métodos
2.
Anal Chem ; 95(2): 1065-1073, 2023 01 17.
Artigo em Inglês | MEDLINE | ID: mdl-36542087

RESUMO

Protein aggregation has been found in a wide range of neurodegenerative protein-misfolding diseases. The demand for in vivo technologies to identify protein aggregation is at the leading edge for the pathogenic study, diagnostic development, and therapeutic intervention of these devastating disorders. Herein, we report a series of luminol analogues to construct a facile chemiluminescence (CL)-based approach for in vivo detection and imaging of ß-sheet protein aggregates. The synthesized compounds exhibited a distinct chemiluminescent response with long emission wavelengths toward reactive oxygen species under physiological conditions and displayed signal amplification in the presence of ß-sheet protein aggregates, including α-synuclein, ß-amyloid, and tau. Among them, CyLumi-3 was further evaluated as a chemiluminescent probe in preclinical models. By intravenous administration into the model mice via the tail vein, in vivo CL imaging noninvasively detected the specific CL of the probe targeting the α-synuclein aggregates in the brains of living mice. Based on its structural characteristics, CyLumi-3 can readily interact with α-synuclein aggregates with significantly enhanced fluorescence and can identify α-synuclein aggregates in vivo via distinctive CL amplification, which could pave the way for a more comprehensive understanding of protein aggregation in preclinical studies and would provide new hints for developing small-molecule chemiluminophores for protein aggregates.


Assuntos
Agregados Proteicos , alfa-Sinucleína , Animais , Camundongos , alfa-Sinucleína/química , Luminol/química , Conformação Proteica em Folha beta , Espécies Reativas de Oxigênio/metabolismo , Técnicas Biossensoriais/métodos
3.
Anal Chem ; 95(22): 8649-8659, 2023 06 06.
Artigo em Inglês | MEDLINE | ID: mdl-37232192

RESUMO

Multiplex detection of viable foodborne pathogens is critical for food safety and public health, yet current assays suffer trade-offs between cost, assay complexity, sensitivities, and the specificity between live and dead bacteria. We herein developed a sensing method using artificial intelligence transcoding (SMART) for rapid, sensitive, and multiplex profiling of foodborne pathogens. The assay utilizes the programmable polystyrene (PS) microspheres to encode different pathogens, inducing subsequent visible signals under conventional microscopy that can be analyzed using a customized, artificial intelligence-computer vision, which was trained to decode the intrinsic properties of PS microspheres to reveal the numbers and types of pathogens. Our approach enabled the rapid and simultaneous detection of multiple bacteria from egg samples of <102 CFU/mL without DNA amplification and showed strong consistency with the standard microbiologic and genotypic methods. We adopted our assay through phage-guided targeting to enable the discrimination between live and dead bacteria.


Assuntos
Microbiologia de Alimentos , Doenças Transmitidas por Alimentos , Humanos , Inteligência Artificial , Sensibilidade e Especificidade , Bactérias/genética , Técnicas de Amplificação de Ácido Nucleico , Reação em Cadeia da Polimerase Multiplex/métodos
4.
Sensors (Basel) ; 24(1)2023 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-38203093

RESUMO

Multiple object tracking (MOT) plays an important role in intelligent video-processing tasks, which aims to detect and track all moving objects in a scene. Joint-detection-and-tracking (JDT) methods are thriving in MOT tasks, because they accomplish the detection and data association in a single stage. However, the slow training convergence and insufficient data association limit the performance of JDT methods. In this paper, the anchor-based query (ABQ) is proposed to improve the design of the JDT methods for faster training convergence. By augmenting the coordinates of the anchor boxes into the learnable queries of the decoder, the ABQ introduces explicit prior spatial knowledge into the queries to focus the query-to-feature learning of the JDT methods on the local region, which leads to faster training speed and better performance. Moreover, a new template matching (TM) module is designed for the JDT methods, which enables the JDT methods to associate the detection results and trajectories with historical features. Finally, a new transformer-based MOT method, ABQ-Track, is proposed. Extensive experiments verify the effectiveness of the two modules, and the ABQ-Track surpasses the performance of the baseline JDT methods, TransTrack. Specifically, the ABQ-Track only needs to train for 50 epochs to achieve convergence, while that for TransTrack is 150 epochs.

5.
Biochem Biophys Res Commun ; 636(Pt 1): 140-146, 2022 12 25.
Artigo em Inglês | MEDLINE | ID: mdl-36332476

RESUMO

Triggering receptor expressed on myeloid cells 2 (TREM2), which is typically expressed in microglia/macrophage, is a crucial receptor modulating the activation of immune cells. Recent single-cell RNA sequencing studies of the tumor microenvironment (TME) have found that TREM2 is highly expressed in several subgroups of tumor-associated macrophages (TAMs) with immunosuppressive activity. TREM2 knockout mice are more resistant to tumor growth than wild-type mice in multiple mice tumor models. But the function of TREM2 expression in TAMs of hepatocellular carcinoma (HCC) is still unclear. Here we used a self-complementary adeno-associated virus (scAAV) with macrophage tropism to efficiently knockdown TREM2 in TAMs in vivo and found that the growth of hepatocellular carcinoma was suppressed by TREM2 knockdown. Moreover, we found that TREM2 knockdown remodeled TAMs to an immune-stimulating status and enhanced the therapeutic effect of PD-1 immune-checkpoint blockade in HCC.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Animais , Camundongos , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/tratamento farmacológico , Receptor de Morte Celular Programada 1/genética , Receptor de Morte Celular Programada 1/metabolismo , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/tratamento farmacológico , Macrófagos/metabolismo , Microambiente Tumoral , Camundongos Knockout , Glicoproteínas de Membrana/genética , Glicoproteínas de Membrana/metabolismo , Receptores Imunológicos/genética , Receptores Imunológicos/metabolismo
6.
Cardiovasc Drugs Ther ; 36(6): 1109-1119, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34491473

RESUMO

PURPOSE: Abdominal aortic aneurysm (AAA) rupture is one of the most common causes of mortality in cardiovascular diseases, but currently there is no approved drug for AAA treatment or prevention in the clinic. Naringenin (NGN) has been reported to have anti-AAA effects. However, water solubility and in vivo absorption of NGN are not satisfactory, which leads to its low bioavailability, thus affecting its pharmacological effects. In this project, the improving effects of isonicotinamide (INT) co-crystal and hydroxy propyl methyl cellulose (HPMC) or polyvinyl pyrrolidone (PVP) on the solubility, in vivo absorption, and anti-AAA effects of NGN were evaluated. METHODS: In the current study, co-crystals of naringenin-isonicotinamide (NGN-INT) were prepared, and effects of PVP or HPMC on precipitation rate, supersaturation, and bioavailability of NGN were explored. In addition, with or without HPMC supply, the effects of NGN-INT co-crystal on anti-AAA efficacy of NGN were investigated on an elastase-induced AAA mouse model, and the results were compared with the efficacy of the NGN crude drug. RESULTS: Our results demonstrate that NGN-INT formulation, compared to the NGN crude drug, enhanced the dissolution rate of NGN and significantly increased Cmax and AUC(0-∞) of NGN by 18 times and 1.97 times, respectively. Addition of PVP or HPMC in NGN-INT co-crystal further increased bioavailability of NGN in NGN-INT. The in vivo pharmacodynamic study showed that NGN-INT with HPMC significantly improved the inhibitory effects of NGN against AAA. CONCLUSION: NGN-INT significantly improved the absorption and aortic protective effects of NGN. The supersaturation-prolonging effect of HPMC further enhanced bioavailability and anti-AAA effects of NGN-INT.


Assuntos
Aneurisma da Aorta Abdominal , Camundongos , Animais , Aneurisma da Aorta Abdominal/tratamento farmacológico , Aneurisma da Aorta Abdominal/prevenção & controle , Derivados da Hipromelose/química , Solubilidade , Povidona/química
7.
BMC Psychiatry ; 22(1): 623, 2022 09 21.
Artigo em Inglês | MEDLINE | ID: mdl-36131269

RESUMO

BACKGROUND: Mental illness is a major burden of disease worldwide. Community Mental Health Services (CMHS) are key to achieving community-based recovery for people with mental illness. In China, even though the community management of patients with mental illness is improving, the barriers faced by Community Mental Health Workers (CMHWs) are unclear. This study explores the difficulties and challenges in CMHS from the perspective of CMHWs. The results of this study may provide a practical basis for the training of CMHWs. METHODS: We carried out a qualitative study using an empirical phenomenological approach. Nine CMHWs were recruited from nine communities in Wuhan, Hubei Province, using purposive and snowball sampling. Face to face semi-structured in-depth interviews were conducted with them from December 27 to 28, 2019. Interview recordings were converted to text content by Nvivo 11.0 software and analyzed using Colaizzi's phenomenological method. RESULTS: Three main themes were identified in this study: 1) Lack of role orientation leads to role ambiguity, 2) Failure to establish a therapeutic trust relationship with patients, and 3) Lack of communication and collaboration with various departments and peers. Seven sub themes were also identified. In these themes, CMHWs emphasized the importance of role clarity, therapeutic trusting relationships, and effective communication and coordination mechanisms. CONCLUSION: Although China has made great efforts on the road to improving the quality of CMHS, several salient issues regarding CMHWs must be addressed to optimize the quality of services provided by CMHWs. Community mental health institutions should help CMHWs overcome these difficulties, by maximizing its value and promoting the development of CMHS.


Assuntos
Serviços Comunitários de Saúde Mental , Transtornos Mentais , Serviços de Saúde Mental , Agentes Comunitários de Saúde , Humanos , Transtornos Mentais/terapia , Saúde Mental , Pesquisa Qualitativa
8.
J Clin Lab Anal ; 36(3): e24275, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35141939

RESUMO

PURPOSE: The aim of this study was to explore the value of the combination between lung ultrasound score (LUS) and the expression of plasma miR-21-3p in predicting the prognosis of patients with acute lung injury (ALI). PATIENTS AND METHODS: A total of 136 ALI patients were divided into survival (n = 86) and death groups (n = 50), or into low/middle-risk (n = 77) and high-risk groups (n = 59) according to APACHE II scores. Bioinformatics was used to explore the mechanism of action of miR-21-3p in humans. Real-time fluorescent quantitative PCR was used to detect the expression of miR-21-3p in plasma, and LUS was recorded. Receiver operator characteristic (ROC) curve and Pearson correlation were also used. RESULTS: The LUS and expression level of plasma miR-21-3p in the death and high-risk groups were significantly higher than those in the survival and low/middle-risk groups (p < 0.01 and p < 0.05). miR-21-3p expression leads to pulmonary fibrosis and promotes the deterioration of ALI patients by regulating fibroblast growth factor and other target genes. ROC curve analysis showed that the best cutoff values for LUS and plasma miR-21-3p expression were 18.60 points and 1.75, respectively. LUS score and miR-21-3p combined predicted the death of ALI patients with the largest area under the curve (0.907, 95% CI: 0.850-0.964), with sensitivity and specificity of 91.6% and 85.2%, respectively. The expression level of plasma miR-21-3p was positively correlated with LUS in the death group (r = 0.827, p < 0.01). CONCLUSION: LUS and expression level of miR-21-3p in plasma are correlated with the severity and prognosis of ALI patients, and their combination has a high value for the prognostic assessment of ALI patients.


Assuntos
Lesão Pulmonar Aguda , MicroRNAs , Síndrome do Desconforto Respiratório , Lesão Pulmonar Aguda/diagnóstico por imagem , Lesão Pulmonar Aguda/genética , Humanos , Pulmão/diagnóstico por imagem , MicroRNAs/genética , Prognóstico , Curva ROC
9.
Molecules ; 27(20)2022 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-36296697

RESUMO

Target identification is an important step in drug discovery, and computer-aided drug target identification methods are attracting more attention compared with traditional drug target identification methods, which are time-consuming and costly. Computer-aided drug target identification methods can greatly reduce the searching scope of experimental targets and associated costs by identifying the diseases-related targets and their binding sites and evaluating the druggability of the predicted active sites for clinical trials. In this review, we introduce the principles of computer-based active site identification methods, including the identification of binding sites and assessment of druggability. We provide some guidelines for selecting methods for the identification of binding sites and assessment of druggability. In addition, we list the databases and tools commonly used with these methods, present examples of individual and combined applications, and compare the methods and tools. Finally, we discuss the challenges and limitations of binding site identification and druggability assessment at the current stage and provide some recommendations and future perspectives.


Assuntos
Descoberta de Drogas , Domínio Catalítico , Sítios de Ligação , Descoberta de Drogas/métodos
10.
Nanomedicine ; 32: 102310, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33184021

RESUMO

In this study, we prepared naringenin (NGN) loaded nanostructured lipid carrier (NGN-NLC) and investigated its characterizations, transepithelial transport, intestinal absorption and inhibitory effects on nonalcoholic fatty liver disease (NAFLD) induced by a methionine choline deficient (MCD) diet in mice. The NGN-NLC, prepared by a method of emulsion-evaporation plus low temperature-solidification, displayed high drug loading capacity of 22.5 ± 1.7%. Compared to the NGN crude drug, the NGN-NLC, at an equal NGN dose, improved NGN release rate by 3.5-fold and elevated NGN transepithelial transport and intestinal absorption through enhancing intracellular transport of clathrin pathway and escaping p-gp efflux; at an 8-fold lower NGN dose, showed comparable pharmacokinetic parameters, but elevated liver NGN distribution by 1.5-fold, reduced MCD diet-induced hepatic lipid deposition by 3-fold. These results suggest that the NLC formulation significantly increased the inhibitory effects of NGN on NAFLD because of the improved drug release rate, transepithelial transport and intestinal absorption, and the elevated oral bioavailability and liver NGN distribution.


Assuntos
Portadores de Fármacos/química , Composição de Medicamentos , Flavanonas/uso terapêutico , Absorção Intestinal , Lipídeos/química , Nanoestruturas/química , Hepatopatia Gordurosa não Alcoólica/tratamento farmacológico , Animais , Transporte Biológico/efeitos dos fármacos , Cães , Liberação Controlada de Fármacos , Estabilidade de Medicamentos , Células Epiteliais/metabolismo , Flavanonas/química , Flavanonas/farmacocinética , Flavanonas/farmacologia , Absorção Intestinal/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/patologia , Células Madin Darby de Rim Canino , Masculino , Camundongos Endogâmicos C57BL , Hepatopatia Gordurosa não Alcoólica/sangue , Hepatopatia Gordurosa não Alcoólica/prevenção & controle , Ratos Sprague-Dawley , Temperatura
11.
Microorganisms ; 11(10)2023 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-37894218

RESUMO

Metagenomic data compression is very important as metagenomic projects are facing the challenges of larger data volumes per sample and more samples nowadays. Reference-based compression is a promising method to obtain a high compression ratio. However, existing microbial reference genome databases are not suitable to be directly used as references for compression due to their large size and redundancy, and different metagenomic cohorts often have various microbial compositions. We present a novel pipeline that generated simplified and tailored reference genomes for large metagenomic cohorts, enabling the reference-based compression of metagenomic data. We constructed customized reference genomes, ranging from 2.4 to 3.9 GB, for 29 real metagenomic datasets and evaluated their compression performance. Reference-based compression achieved an impressive compression ratio of over 20 for human whole-genome data and up to 33.8 for all samples, demonstrating a remarkable 4.5 times improvement than the standard Gzip compression. Our method provides new insights into reference-based metagenomic data compression and has a broad application potential for faster and cheaper data transfer, storage, and analysis.

12.
Chemosphere ; 329: 138622, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37037357

RESUMO

Heavy metals in water are critical global environmental problems. In particular, the anionic heavy metal chromium (Cr) has carcinogenic and genotoxic risks on human health. To this end, an ultralight and flexible nanofibrillated cellulose (NFC)/chitosan (CS) aerogel was developed only by freeze-drying combined with physical thermal cross-linking for efficient one step co-removal of Cr(VI) and Cr(III). The maximum adsorption capacity of Cr(VI) and total Cr calculated according to the Langmuir model was 197.33 and 134.12 mg/g, respectively. Even in the presence of competing soluble organics, anions and oil contaminants, the resulting NFC/CS-5 aerogels showed excellent selectivity. The aerogel exhibited outstanding mechanical integrity, remaining intact after 17 compressions in air and underwater. Meanwhile, after 5 adsorption-desorption cycles, the aerogel was easy to regenerate and maintained a high regeneration efficiency of 80.25%. Importantly, self-assembled NFC/CS-5 aerogel filter connected with the peristaltic pump could purify 752 mL of industrial wastewater with Cr(VI) pre-concentration capacity of 49.71 mg/g. XPS and FT-IR verified that electrostatic interactions, reduction and complexation acted as the main driving forces for the adsorption process. Moreover, such aerogel possessed broad application prospects for alleviating heavy metal pollution in agriculture.


Assuntos
Quitosana , Metais Pesados , Poluentes Químicos da Água , Humanos , Celulose , Adsorção , Espectroscopia de Infravermelho com Transformada de Fourier , Cromo , Poluentes Químicos da Água/análise , Concentração de Íons de Hidrogênio , Cinética
13.
Carbohydr Polym ; 311: 120752, 2023 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-37028855

RESUMO

The over-reliance on tetracycline antibiotics (TC) in the animal husbandry and medical field has seriously affected the safety of the ecological environment. Therefore, how to effectively treat tetracycline wastewater has always been a long-term global challenge. Here, we developed a novel polyethyleneimine (PEI)/Zn-La layered double hydroxides (LDH)/cellulose acetate (CA) beads with cellular interconnected channels to strengthen the TC removal. The results of the exploration on its adsorption properties illustrated that the adsorption process exhibited a favorable correlation with the Langmuir model and the pseudo-second-order kinetic model, namely monolayer chemisorption. Among the many candidates, the maximum adsorption capacity of TC by 10 %PEI-0.8LDH/CA beads was 316.76 mg/g. Apart from that, the effects of pH, interfering species, actual water matrix and recycling on the adsorption of TC by PEI-LDH/CA beads were also analyzed to verify their superior removal capability. The potential for industrial-scale applications was expanded through fixed-bed column experiments. The proven adsorption mechanisms mainly included electrostatic interaction, complexation, hydrogen bonding, n-π EDA effect and cation-π interaction. The self-floating high-performance PEI-LDH/CA beads exploited in this work provided fundamental support for the practical application of antibiotic-based wastewater treatment.


Assuntos
Antibacterianos , Poluentes Químicos da Água , Hidróxidos/química , Tetraciclina/química , Adsorção , Poluentes Químicos da Água/química , Cinética
14.
Int J Soc Psychiatry ; 69(2): 420-429, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-35943191

RESUMO

BACKGROUND: Schizophrenia is a chronic and severe mental disorder. People with schizophrenia have transferred from hospital-based care to community-based care with the support of mental health legal policies. Challenges faced in the community should be emphasized. Limited qualitative studies have explored the challenges of living with schizophrenia. AIMS: To explore the challenges of people living with schizophrenia in the community. METHODS: A narrative method was used, including semi-structured, face-to-face interviews. Thematic analysis approach was used to analyze data. RESULTS: Ten clients and their family members participated in the study. Analysis revealed three main themes related to their challenges in the community: deficits in self-management of illness; insufficient community mental health care; and the influence of policy. These challenges prevent those with schizophrenia from effectively managing their illness, returning to a productive role in society, and improving their quality of life. CONCLUSIONS: There are challenges in mental health rehabilitation and social reintegration of individuals with schizophrenia. There is a need for continuous community mental rehabilitation services, appropriate policy support, and the need to educate the public to reduce social bias and discrimination which allows individuals with schizophrenia to assume a productive role in the community.


Assuntos
Reabilitação Psiquiátrica , Esquizofrenia , Humanos , Qualidade de Vida , Pesquisa Qualitativa
15.
Water Res ; 222: 118839, 2022 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-35870396

RESUMO

Manganese (Mn)-containing composite metal adsorbents are very effective at removing arsenite (As(III)) from contaminated water, however, the low removal speed and oxidation efficiency have limited their further application. In this study, a nonhomogeneous catalytic oxidation-adsorption system was constructed by coupling iron-manganese composite oxide (FeMnOx) with sulfite (S(IV)) to enhance the recovery of oxidative capacity and accelerate the removal of As(III). Experimental results showed that the FeMnOx/S(IV) system decreased the As(III) concentration from 1079 to <10 µg/L within 10 min and almost completely oxidized As(III) to As(V). In contrast, FeMnOx alone removed only 82.4% of As(III) within 30 min, and 60.0% of the adsorbed As(III) was not oxidized. Meanwhile, the adsorption capacity of FeMnOx/S(IV) system for As(III) was considerably higher than that of the only-FeMnOx system (76.5 > 46.3 mg/g). The efficient and fast As(III) removal was attributed to the SO5•- radical generated by S(IV) acting as the driving force for the redox cycle between As(III) and Mn(II/III/IV). Several environmental factors (e.g., solution pH and inorganic anions) and the reusability and practicality of FeMnOx were systematically investigated, and the results further confirmed the superiority of the FeMnOx/S(IV) system in As(III) removal. In particular, the proposed FeMnOx nanocellulose aerogel effectively purified arsenic-contaminated groundwater using a fixed-bed column. Thus, FeMnOx-S(IV) coupling is very promising for the purification of arsenic-contaminated water bodies.


Assuntos
Arsênio , Poluentes Químicos da Água , Purificação da Água , Adsorção , Arsênio/análise , Ferro , Manganês , Oxirredução , Óxidos , Sulfitos , Água , Poluentes Químicos da Água/análise , Purificação da Água/métodos
16.
Comput Math Methods Med ; 2022: 6960304, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36199775

RESUMO

Background: Gastric cancer (GC) belongs to a type of the most deadly cancer in the world, and the incidence rate of GC will increase in the coming decades. Tanshinone IIA (Tan IIA) is an active component that separated from Danshen. Tan IIA may also exert its therapeutic effects in disease with intestinal dysbacteriosis, at least partially, via regulating the intestinal microbiome. Nevertheless, it is obscure whether Tanshinone IIA affects the intestinal dysbacteriosis and plays antitumor roles. This research was designed to explore Tanshinone IIA potential on the intestinal dysbacteriosis of GC xenograft mice. Methods: Mouse xenograft GC tumor models were built and treated by Tan IIA. The tumor growth as well as microbiome in the intestinal were compared. Western blot was used to detect the phosphorylation of the NF-κB and expressions of the downstream cytokines IL-6 and IL-1ß. Results: Microbiome in the intestinal was changed in xenograft tumor mice in comparison with the control mice. What is more, Tan IIA could influence the microbiome in the intestinal of the tumor mice. Tan IIA hinders the growth of xenograft tumor and change the microbiome in the intestinal, but intestinal dysbacteriosis condition partially blocked Tan IIA-stimulated antitumor effects. In addition, intestinal dysbacteriosis abrogated Tan IIA-stimulated decrease in the NF-κB signaling in xenograft tumor mice. Conclusions: Tanshinone IIA may inhibit GC tumor growth via affecting the intestinal microbiome through regulating the NF-κB signaling.


Assuntos
Abietanos , Microbioma Gastrointestinal , Neoplasias Gástricas , Animais , Humanos , Camundongos , Abietanos/farmacologia , Disbiose/tratamento farmacológico , Interleucina-6 , NF-kappa B/metabolismo , Neoplasias Gástricas/tratamento farmacológico
17.
RSC Adv ; 12(44): 28463-28472, 2022 Oct 04.
Artigo em Inglês | MEDLINE | ID: mdl-36320538

RESUMO

Two-dimensional MoS2 with a controllable morphology was prepared via a simple one-step hydrothermal method. Citric acid was used as a complexing agent and self-assembly inducer. The morphology of MoS2 changed from clusters to nanosheets, and, eventually, to stacked nanorods. A formation mechanism is proposed for the observed evolution of the morphology. The nanosheet structure presents a relatively large specific surface area, more exposed active sites and greater 1T phase content compared to the other morphologies. The electrochemical performance tests show that the MoS2 nanosheets exhibit excellent electrochemical behavior. Their specific capacitance is 320.5 F g-1, and their capacitance retention is up to 95% after 5000 cycles at 5 mA cm-2. This work provides a feasible approach for changing the morphology of MoS2 for high efficiency electrode materials for supercapacitors.

18.
J Colloid Interface Sci ; 628(Pt B): 807-818, 2022 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-36029595

RESUMO

Phosphate-induced water eutrophication has attracted global attention. Fabricating adsorbents with both high phosphate adsorption affinity and accessible separation property is challenging. Herein, PG@NZL, a hierarchical nanocomposite fibrous membrane, was fabricated via in-situ growth of La-doped NiZn-LDH (NiZnLa0.1) over electrospun graphene oxide-polymer composite fibers (PG). The porous surface of the PG fibers provided abundant anchor sites for the vertical self-supported growth of NiZnLa0.1 nanosheets, contributing to a high surface area. The La-doped NiZnLa0.1 trimetallic LDH achieved a much higher adsorption capacity than NiZn-LDH. The negative adsorption energy (-1.45 eV), calculated with DFT, confirmed its spontaneous adsorption potential for phosphate. Interestingly, the PG fibers contributed to oxygen vacancies and the metal center electronic structure evolution of NiZnLa0.1, thus strengthening the coordination with phosphate. Mechanistic analysis revealed that the high adsorption capacity of PG@NZL is attributed to its superior anion exchange property, oxygen vacancies, and inner-sphere complexation. Therefore, the flexible and easily separated PG@NZL nanocomposite fibrous membrane is a promising adsorbent for effectively treating phosphate-bearing wastewater.


Assuntos
Fosfatos , Águas Residuárias , Fosfatos/química , Água/química , Polímeros , Porosidade , Ânions , Oxigênio
19.
J Physiol Biochem ; 78(2): 427-437, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35253089

RESUMO

Bcl2-associated athanogene3 (BAG3) protein, mainly induced by stressful stimuli, has been confirmed to participate in apoptosis and autophagy. In recent studies, BAG3 has gradually become a key molecule in tumors. However, the role of BAG3 in the progression of lumbar facet joint osteoarthritis (FJOA) and whether it can regulate chondrocyte apoptosis and autophagy are still unknown. In both human and FJOA rat models, we observed an upregulation of BAG3 and apoptosis and autophagy-related proteins compared with healthy tissues. Then, we established the chondrocytes injury model in vitro by using IL-1ß to stimulate human SW1353 cells. Western blot analysis data showed significant expression of BAG3, apoptosis, and autophagy-related proteins in SW1353 cells. Finally, by knocking down and overexpressing BAG3, we discovered possible anti-apoptotic and autophagy-promoted effects of BAG3 in FJOA through various experimental methods. This study demonstrated that BAG3 actively participates in regulating chondrocyte apoptosis and autophagy in FJOA and may be a highly interesting target for pharmacological interventions.


Assuntos
Proteínas Adaptadoras de Transdução de Sinal , Proteínas Reguladoras de Apoptose , Osteoartrite , Articulação Zigapofisária , Proteínas Adaptadoras de Transdução de Sinal/genética , Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Animais , Apoptose , Proteínas Reguladoras de Apoptose/genética , Proteínas Reguladoras de Apoptose/metabolismo , Autofagia , Proteínas Relacionadas à Autofagia/metabolismo , Condrócitos/metabolismo , Humanos , Osteoartrite/metabolismo , Osteoartrite/patologia , Ratos , Articulação Zigapofisária/metabolismo , Articulação Zigapofisária/patologia
20.
J Hazard Mater ; 422: 126908, 2022 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-34418837

RESUMO

Here, we prepared a novel nanostructured Fe-Cu-Mn composite oxide (FCMOx) adsorbent using an ultrasonic coprecipitation method. The maximum adsorption capacity of As(III) and As(V) reached 158.5 and 115.2 mg/g under neutral conditions, respectively. The effects of several environmental factors (coexisting ions, solution pH, etc.) on the removal of inorganic arsenic using FCMOx were studied through batch experiments. The results showed that except for PO43- and high initial pH, it was not significantly affected by ionic strength and other existing anions, implying a higher selectivity and adaptability. Combined with EPR, FTIR, and XPS analysis, we concluded that the Cu component and the reactive oxygen species (ROS) it generates played a decisive role in maintaining the stability of the redox cycle between Mn(IV)/Mn(III)/Mn(II) and enhancing the oxidation efficiency of As(III). Meanwhile, the adsorption mechanism of As(V) was mainly through the replacement of the FCMOx surface -OH to form stable inner-sphere arsenic complexes, while the removal mechanism of As(III) may involve the process of synergistic oxidation and chemisorption coupling. Additionally, the effective removal of As from the simulated As-contaminated water and its satisfactory reuse performance make FCMOx adsorbents favorable candidates for the removal of As-contaminated water in the future.

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