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1.
J Org Chem ; 89(13): 9381-9388, 2024 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-38885147

RESUMO

A Pd(II)/N,N'-disulfonyl bisimidazoline-catalyzed asymmetric 1,4-conjugate addition reaction of low-cost arylboronic acids with readily available ß-substituted cyclic enones is described, providing a straightforward way of constructing cyclic all-carbon quaternary stereocenters with high enantioselectivity, in which ≥96% ee was obtained in most cases. The reaction proceeded without the protection of inert gas, making the operation process simple. Theoretical calculations have been applied to understand the origins of enantioselectivity.

2.
Appl Opt ; 63(14): 3753-3762, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38856337

RESUMO

To eliminate the effect of nonlinear errors on measurement results, this paper presents a new method, to our knowledge, to overcome the nonlinear response of commercial projectors and cameras by using binary stripes for coding. The method shifts the generated equally spaced binary stripes by a fixed number of pixel points to obtain different stripe maps, followed by sequential projection of these binary stripes with a digital projector. The acquired binary stripes are reused in the 3D reconstruction combined with the phase-shift method and can be reduced to sinusoidal stripes with different phase shifts by a specific superposition method. In this paper, this method is combined with the traditional four-step phase-shift method for experiments. The results show that the accuracy of the wrapped phase obtained by the method proposed in this paper is 13.88% higher than that obtained by the traditional 16-step phase-shift method. Similarly, the accuracy of the standard ball measurement is increased by 21.05%. Additionally, the point cloud on the surface of the complex object obtained by the proposed method is smoother and more delicate than that obtained by the traditional 16-step phase-shift method.

3.
Front Microbiol ; 15: 1344162, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38486698

RESUMO

Objective: Tuberculous meningitis (TBM) is the most severe form of tuberculosis (TB). The purpose of this study was to explore the relationship between the number of natural killer (NK) cells and adaptive immune status, and disease severity in TBM patients. Methods: We conducted a retrospective study on 244 TB patients and 146 healthy control subjects in the 8th Medical Center of the PLA General Hospital from March 2018 and August 2023. Results: The absolute count of NK cells in the peripheral blood of TBM patients was significantly lower than that in normal controls (NC), latent tuberculosis infection (LTBI), and non-severe TB (NSTB) patients (p < 0.05). The proportion of TBM patients (48.7%) with a lower absolute count of NK cells than the normal reference value was significantly higher than that in NC (5.2%) and LTBI groups (4.0%) (p < 0.05), and slightly higher than that in NSTB group (36.0%) (p > 0.05). The absolute counts of lymphocyte subsets in TBM combined with other active TB group, etiology (+) group, IGRA (-) group, and antibody (+) group were lower than that in simple TBM group, etiology (-) group, IGRA (+) group, and antibody (-) group, respectively. The CD3+ T, NK, and B cells in BMRC-stage III TBM patients were significantly lower than those in stage I and stage II patients (p < 0.05). The counts of CD3+ T, CD4+ T, and B cells in the etiology (+) group were significantly lower than those in the etiology (-) group (p < 0.05). Conclusion: The absolute counts of lymphocyte subsets in the peripheral blood of TBM patients were significantly decreased, especially in NK cells. The reduction of these immune cells was closely related to the disease severity and had a certain correlation with cellular and humoral immune responses. This study helps to better understand the immune mechanism of TBM and provides reliable indicators for evaluating the immune status of TBM patients in clinical practice.

4.
Nanoscale ; 16(8): 3994-4003, 2024 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-38327210

RESUMO

Iron-chromium flow batteries (ICRFBs) are regarded as one of the most promising large-scale energy storage devices with broad application prospects in recent years. However, transitioning from laboratory-scale development to industrial-scale deployment can be a time-consuming process due to the multitude of complex factors that impact ICRFB stack performance. Herein, a data-driven optimization methodology applying active learning, informed by an extensive survey of the literature encompassing diverse experimental conditions, is proposed to enable exceptional precision in predicting ICRFB system performance considering both operation conditions and key materials selection. Specifically, multitask ML models are trained on experimental data with a high prediction accuracy (R2 > 0.92) to link ICRFB properties to energy efficiency, coulombic efficiency, and capacity. We also interpret the ML models based on Shapley additive explanations and extract valuable insights into the importance of descriptors. It is noted that the operation conditions (current density and cycle number) and the electrode type are the most critical descriptors affecting the voltage efficiency and coulombic efficiency while the electrode size strongly affects the capacity. Moreover, active learning is used to explore the most optimized cases considering the highest energy efficiency and capacity. The versatility and robustness of the approach are demonstrated by the successful validation between ML prediction and our experiments of energy efficiency (±0.15%) and capacity (±0.8%). This work not only affords fruitful data-driven insight into the property-performance relationship, but also unveils the explainability of critical properties on the performance of ICRFBs, which accelerates the rational design of next-generation ICRFBs.

5.
Chem Commun (Camb) ; 60(11): 1492-1495, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38224160

RESUMO

A base-promoted olefin skeletal rearrangement strategy from para-quinone methides (p-QMs) and N-fluoroarenesulfonamides is reported, enabling direct nitrogen insertion of olefins to produce a series of multiarylated (Z)-N-sulfonyl amidines with complete stereoselectivity and generally good yields. Using p-QMs without o-hydroxy substituents gave triarylated N-sulfonyl amidines, whereas tetraarylated N,N'-disulfonyl amidines were synthesized with the existence of o-hydroxy groups.

6.
Expert Opin Drug Saf ; 23(3): 373-383, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37873598

RESUMO

BACKGROUND: The triglyceride-lowering drug, icosapent ethyl (IPE), was granted a new indication for the reduction of atherosclerotic cardiovascular disease risk in 2019. This study aimed to investigate the safety profile of IPE by mining the FDA Adverse Event Reporting System (FAERS) database. METHODS: The reporting odds ratio was used to analyze IPE's adverse events (AEs) based on the FAERS data from July 2012 to December 2022. We described the characteristics of AE reports and evaluated the clinical prioritization of AEs. Then we defined and analyzed nine interested adverse drug reactions (ADRs) in both overall and subgroups, and investigated the times to onset. RESULTS: The findings of our study strengthen the evidence for an increased risk of atrial fibrillation using IPE. IPE alone may not increase the risk of bleeding unless combined with antithrombotic drugs. Similar to statins, IPE alone can increase the risk of musculoskeletal pain, drug-related hepatic disorders, and hyperglycemia, but the risk could not double when IPE was combined with statins. Most ADRs occur in the early stage of treatment. CONCLUSIONS: This study provides a comprehensive real-world safety profile of IPE, which indicates that IPE is well-tolerated.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Ácido Eicosapentaenoico/análogos & derivados , Inibidores de Hidroximetilglutaril-CoA Redutases , Humanos , Estados Unidos/epidemiologia , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Sistemas de Notificação de Reações Adversas a Medicamentos , Ácido Eicosapentaenoico/efeitos adversos , United States Food and Drug Administration
7.
Br J Clin Pharmacol ; 90(3): 837-848, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-37949652

RESUMO

AIM: As the direct oral anticoagulant most recently approved in China, data pertaining to clinical edoxaban use are still scarce. This study investigated the prevalence of and contemporary trends in edoxaban prescription among Chinese patients as well as factors associated with its inappropriate use in a multicentre registry of patients treated in real-world clinical practice. METHODS: This real-world, prospective, multicentre and non-interventional study included 1005 inpatients treated with edoxaban. According to National Medical Products Administration and European Heart Rhythm Association guidelines, edoxaban therapy was determined to be appropriate or inappropriate in each case. RESULTS: The median patient age was 70.0 years (interquartile range 61.0-78.0 years) and 46.3% were women. Overall, 456 (45.4%) patients received inappropriate edoxaban therapy, and common issues included an inappropriately low dosage (183, 18.2%) or wrong drug selection (109, 10.8%), high dosage (73, 7.3%), unreasonable off-label use (49, 4.9%), contraindicated medication combinations (27, 2.7%) and incorrect administration timing (16, 1.6%). Several factors, such as age ≥75 years (odds ratio [OR] = 1.921, 95% confidence interval [CI] 1.355-2.723, P < 0.001), weight >60 kg (OR = 2.657, 95%CI 1.970-3.583, P < 0.001), severe renal insufficiency (OR = 1.988, 95% CI 1.043-3.790, P = 0.037), current anaemia (OR = 1.556, 95% CI 1.151-2.102, P = 0.004) and history of bleeding (OR = 2.931, 95% CI 1.605-5.351, P < 0.001) were associated with an increased risk of inappropriate edoxaban therapy, whereas factors associated with cardiovascular specialties, such as admission to a cardiovascular department (OR = 0.637, 95% CI 0.464-0.873, P = 0.005), dronedarone use (OR = 0.065, 95% CI 0.026-0.165, P < 0.001) and amiodarone use (OR = 0.365, 95% CI 0.209-0.637, P < 0.001) decreased this risk. CONCLUSION: In this real-world study, 45.4% of patients received an inappropriate treatment with edoxaban. Multiple clinical characteristics can help identify patients who should receive edoxaban. Further development and implantation of educational activities and management strategies are needed to ensure the correct use of edoxaban.


Assuntos
Fibrilação Atrial , Piridinas , Acidente Vascular Cerebral , Tiazóis , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Masculino , Anticoagulantes/efeitos adversos , Prescrição Inadequada , Prevalência , Estudos Prospectivos , Fibrilação Atrial/tratamento farmacológico , Inibidores do Fator Xa , Sistema de Registros , Acidente Vascular Cerebral/epidemiologia
8.
Front Immunol ; 14: 1280299, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38022558

RESUMO

Introduction: The Bacillus Calmette-Guérin (BCG) vaccine, currently used against tuberculosis (TB), exhibits inconsistent efficacy, highlighting the need for more potent TB vaccines. Materials and methods: In this study, we employed reverse vaccinology techniques to develop a promising multi-epitope vaccine (MEV) candidate, called PP13138R, for TB prevention. PP13138R comprises 34 epitopes, including B-cell, cytotoxic T lymphocyte, and helper T lymphocyte epitopes. Using bioinformatics and immunoinformatics tools, we assessed the physicochemical properties, structural features, and immunological characteristics of PP13138R. Results: The vaccine candidate demonstrated excellent antigenicity, immunogenicity, and solubility without any signs of toxicity or sensitization. In silico analyses revealed that PP13138R interacts strongly with Toll-like receptor 2 and 4, stimulating innate and adaptive immune cells to produce abundant antigen-specific antibodies and cytokines. In vitro experiments further supported the efficacy of PP13138R by significantly increasing the population of IFN-γ+ T lymphocytes and the production of IFN-γ, TNF-α, IL-6, and IL-10 cytokines in active tuberculosis patients, latent tuberculosis infection individuals, and healthy controls, revealing the immunological characteristics and compare the immune responses elicited by the PP13138R vaccine across different stages of Mycobacterium tuberculosis infection. Conclusion: These findings highlight the potential of PP13138R as a promising MEV candidate, characterized by favorable antigenicity, immunogenicity, and solubility, without any toxicity or sensitization.


Assuntos
Mycobacterium tuberculosis , Tuberculose , Humanos , Tuberculose/prevenção & controle , Vacina BCG , Imunização , Citocinas , Epitopos de Linfócito T
9.
J Extracell Vesicles ; 12(9): e12360, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37654012

RESUMO

γδ-T cells are innate-like T cells with dual antitumor activities. They can directly eradicate tumor cells and function as immunostimulatory cells to promote antitumor immunity. Previous studies have demonstrated that small extracellular vesicles (EVs) derived from γδ-T cells (γδ-T-EVs) inherited the dual antitumor activities from their parental cells. However, it remains unknown whether γδ-T-EVs can be designed as tumors vaccine to improve therapeutic efficacy. Here, we found that γδ-T-EVs had immune adjuvant effects on antigen-presenting cells, as revealed by enhanced expression of antigen-presenting and co-stimulatory molecules, secretion of pro-inflammatory cytokines and antigen-presenting ability of DCs after γδ-T-EVs treatment. The γδ-T-EVs-based vaccine was designed by loading tumor-associated antigens (TAAs) into γδ-T-EVs. Compared with γδ-T-EVs, the γδ-T-EVs-based vaccine effectively promoted more tumor-specific T-cell responses. In addition, the vaccine regimen preserved direct antitumor effects and induced tumor cell apoptosis. Interestingly, the allogeneic γδ-T-EVs-based vaccine showed comparable preventive and therapeutic antitumor effects to their autologous counterparts, indicating a better way of centralization and standardization in clinical practice. Furthermore, the allogeneic γδ-T-EVs-based vaccine displayed advantages over the DC-EVs-based vaccine through their dual antitumor activities. This study provides a proof-of-concept for using the allogeneic γδ-T-EVs-based vaccine in cancer control.


Assuntos
Vacinas Anticâncer , Vesículas Extracelulares , Adjuvantes Imunológicos , Apoptose , Citocinas
10.
Anticancer Agents Med Chem ; 23(20): 2209-2216, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37711016

RESUMO

BACKGROUND: Osteosarcoma is the most common malignant bone tumor, with highly proliferative and metastatic properties. Previous studies have reported that arctigenin (Arc), a bioactive lignin compound, showed excellent anti-tumor activities in a variety of human cancers. However, its role in osteosarcoma has not been studied. OBJECTIVE: We aimed to investigate the anti-tumor effects of Arc on osteosarcoma cell proliferation, migration, invasion, apoptosis, and cell cycle. METHODS: Effects of Arc on osteosarcoma cell proliferation were detected by MTT and colony formation assay. Flow cytometry analysis was performed to assess the cell apoptosis and cycle arrest. Transwell assay was used to evaluate the capability of migration and invasion. qRT-PCR and Western blot were employed to determine the changes in mRNA and protein levels. RESULTS: Arc could significantly suppress the proliferation, colony formation, and induce cell apoptosis and S phase cycle arrest of MG63 and U-2 OS cells in a dose-dependent manner. In addition, we also observed an inhibitory effect of Arc treatment on osteosarcoma cell invasion, migration, and epithelial-mesenchymal transition (EMT). HMOX1, encoding enzyme heme oxygenase-1, was predicted to be a candidate target of Arc using STITCH. Arc treatment significantly reduced the mRNA and protein levels of HMOX1. Furthermore, overexpression of HMOX1 could partly reverse the inhibitory effects of Arc on osteosarcoma cell malignant phenotypes. CONCLUSION: Our results suggest that Arc inhibits the proliferation, metastasis and promotes cell apoptosis and cycle arrest of osteosarcoma cells by downregulating HMOX1 expression.


Assuntos
Neoplasias Ósseas , Osteossarcoma , Humanos , Heme Oxigenase-1/genética , Heme Oxigenase-1/farmacologia , Linhagem Celular Tumoral , Apoptose , Proliferação de Células , Neoplasias Ósseas/tratamento farmacológico , Neoplasias Ósseas/metabolismo , Osteossarcoma/metabolismo , RNA Mensageiro , Movimento Celular
12.
Immun Inflamm Dis ; 11(5): e848, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37249294

RESUMO

INTRODUCTION: Osteoarthritis is a degenerative knee joint disease featured with articular cartilage degeneration and inflammation. Alisol A 24-acetate (ALA-24A) is an active triterpene that has antioxidant and anti-inflammatory pharmacological properties. However, its effect and molecular mechanism on osteoarthritis progression have not been reported. METHODS: IL-1ß-induced chondrocyte injury model and monosodium iodoacetate (MIA)-induced rat osteoarthritis model were used. The protective effects of ALA-24A on osteoarthritis were evaluated by determining cell viability, extracellular matrix (ECM) degradation, inflammatory response and oxidative stress using CCK-8 assay, Western blot, ELISA, and DCFH-DA fluorescent probe. The severity and matrix degradation of articular cartilage were assessed by histopathological and immunohistochemical examination. RESULTS: We found that ALA-24A attenuated IL-1ß-induced cell viability inhibition Moreover, ALA-24A suppressed expression levels of ECM degradation-related genes ADAMTS5 and MMP13, and promoted expression levels of ECM synthesis-related genes Aggrecan and Collagen II. In addition, ALA-24A treatment decreased reactive oxygen species (ROS) production and increased antioxidant enzymes (SOD, CAT, and GSH-px) activities, while increased MDA levels. The inflammatory levels of NO, PGE2, TNF-α, and IL-6 were also reduced following treatment with ALA-24A. Our data also revealed that ALA-24A treatment triggered p-AMPK upregulation and p-mTOR downregulation. In rat osteoarthritis model, ALA-24A treatment significantly alleviated the severity and matrix degradation of articular cartilage comparted with model group. CONCLUSIONS: Our findings suggested a protective role of ALA-24A against osteoarthritis by inhibiting ROS and inflammatory response. Furthermore, ALA-24A might be a promising therapeutic option for osteoarthritis treatment.


Assuntos
Osteoartrite , Animais , Ratos , Proteínas Quinases Ativadas por AMP , Antioxidantes , Osteoartrite/tratamento farmacológico , Osteoartrite/metabolismo , Osteoartrite/patologia , Ratos Sprague-Dawley , Espécies Reativas de Oxigênio , Serina-Treonina Quinases TOR
13.
Chem Commun (Camb) ; 59(38): 5725-5728, 2023 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-37092297

RESUMO

A novel gold(I)/Brønsted acid relay catalysis enabling azofuran activation to induce annulative rearrangement from 3-yne-1,2-diols and aryldiazonium tetrafluoroborates is reported, producing a series of furan-2-yl-substituted pyrrol-2-ones bearing a quaternary carbon center with good yields. Exchanging aryldiazonium tetrafluoroborate for azofuran led to skeletally identical but substituent-diverse furan-2-yl-containing pyrrol-2-ones with good yields, supporting the key azofuran activation and annulative rearrangement by gold/Brønsted acid relay catalysis.

14.
Chem Rev ; 123(11): 7025-7080, 2023 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-37053573

RESUMO

Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.

15.
Int Immunopharmacol ; 115: 109728, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36652758

RESUMO

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and monkeypox virus (MPXV) severely threaten human health; however, currently, no vaccine can prevent a co-infection with both viruses. METHODS: Five antigens were selected to predict dominant T and B cell epitopes screened for immunogenicity, antigenicity, toxicity, and sensitization. After screening, all antigens joined in the construction of a novel multiepitope vaccine. The physicochemical and immunological characteristics, and secondary and tertiary structures of the vaccine were predicted and analyzed using bio- and immunoinformatics. Finally, codon optimization and cloning in-silico were performed. RESULTS: A new multiepitope vaccine, named S7M8, was constructed based on four helper T lymphocyte (HTL) epitopes, six cytotoxic T lymphocyte (CTL) epitopes, five B cell epitopes, as well as Toll-like receptor (TLR) agonists. The antigenicity and immunogenicity scores of the S7M8 vaccine were 0.907374 and 0.6552, respectively. The S7M8 vaccine was comprised of 26.96% α-helices, the optimized Z-value of the tertiary structure was -5.92, and the favored area after majorization in the Ramachandran plot was 84.54%. Molecular docking showed that the S7M8 vaccine could tightly bind to TLR2 (-1100.6 kcal/mol) and TLR4 (-950.3 kcal/mol). In addition, the immune stimulation prediction indicated that the S7M8 vaccine could activate T and B lymphocytes to produce high levels of Th1 cytokines and antibodies. CONCLUSION: S7M8 is a promising biomarker with good antigenicity, immunogenicity, non-toxicity, and non-sensitization. The S7M8 vaccine can trigger significantly high levels of Th1 cytokines and antibodies and may be a potentially powerful tool in preventing SARS-CoV-2 and MPXV.


Assuntos
COVID-19 , Coinfecção , Humanos , SARS-CoV-2 , COVID-19/prevenção & controle , Epitopos de Linfócito B , Monkeypox virus , Simulação de Acoplamento Molecular , Vacinologia , Epitopos de Linfócito T , Vacinas de Subunidades Antigênicas , Citocinas , Biologia Computacional
17.
Chemosphere ; 313: 137525, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36521747

RESUMO

The demonstrated developmental and reproductive toxicity of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), coupled with the increasing production and use of emerging per- and polyfluoroalkyl substances (PFASs) has resulted in progressively higher human exposure levels. This has raised concerns about PFAS exposure levels in the fetus, which is highly susceptible to the potential effects of hazardous environmental chemicals. However, in utero exposure to PFASs and health implications have not been fully characterized in China. To fill this gap, we analyzed 19 PFASs in umbilical cord serum samples (n = 66). Information about the mothers and newborns was obtained through questionnaires. Associations between maternal characteristics and neonatal birth weight and PFAS concentrations were analyzed using nonparametric tests. As results, PFOA was detected in all serum samples. The highest median concentration of PFOS in umbilical serum was 1.092 ng·mL-1, followed by perfluoropentanoic acid (median: 0.633 ng·mL-1). Trifluroacetic acid and perfluoropropanoic acid were detected in cord serum for the first time, and their median concentrations were 0.229 and 0.266 ng·mL-1, respectively. Neonatal birth weight was negatively correlated with long-chain PFOS (r = -0.319, P < 0.05), and the concentrations of perfluoroundecanoic acid and perfluorododecanoic acid were significantly different between the birth weight groups. Maternal age, maternal education, diet, and nutritional supplementation during pregnancy can all affect umbilical serum exposure to PFASs. These results demonstrate that legacy PFASs remain major contributors to the composition of human PFASs, while the concentration levels of emerging short-chain alternatives have increased significantly. Modifying the mother's diet may reduce the risk of intrauterine PFAS exposure. Special attention to exposure to highly novel PFASs and confirmation of potential determinants should be taken as a priority in the plan for risk management and actions in this area.


Assuntos
Ácidos Alcanossulfônicos , Poluentes Ambientais , Fluorocarbonos , Gravidez , Feminino , Humanos , Recém-Nascido , Peso ao Nascer , China
18.
J Ovarian Res ; 15(1): 131, 2022 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-36517864

RESUMO

BACKGROUND: Angiopoietin-like 4 (ANGPTL4) is highly expressed in a variety of neoplasms and promotes cancer progression. Nevertheless, the mechanism of ANGPTL4 in ovarian cancer (OC) metastasis remains unclear. This study aimeds to explore whether ANGPTL4 regulates OC progression and elucidate the underlying mechanism. METHODS: ANGPTL4 expression in clinical patient tumor samples was determined by immunohistochemistry (IHC) and high-throughput sequencing. ANGPTL4 knockdown (KD) and the addition of exogeneous cANGPTL4 protein were used to investigate its function. An in vivo xenograft tumor experiment was performed by intraperitoneal injection of SKOV3 cells transfected with short hairpin RNAs (shRNAs) targeting ANGPTL4 in nude mice. Western blotting and qRT-PCR were used to detect the levels of ANGPTL4, CDH5, p-AKT, AKT, ETV5, MMP2 and MMP9 in SKOV3 and HO8910 cells transfected with sh-ANGPTL4 or shRNAs targeting ETV5. RESULTS: Increased levels of ANGPTL4 were associated with poor prognosis and metastasis in OC and induced the angiogenesis and metastasis of OC cells both in vivo and in vitro. This tumorigenic effect was dependent on CDH5, and the expression levels of ANGPTL4 and CDH5 in human OC werepositively correlated. In addition, CDH5 activated p-AKT, and upregulated the expression of MMP2 and MMP9. We also found that the expression of ETV5 was upregulated by ANGPTL4, which could bind the promoter region of CDH5, leading to increased CDH5 expression. CONCLUSION: Our data indicated that an increase in the ANGPTL4 level results in increased ETV5 expression in OC, leading to metastasis via activation of the CDH5/AKT/MMP9 signaling pathway.


Assuntos
Neoplasias Ovarianas , Animais , Feminino , Humanos , Camundongos , Proteína 4 Semelhante a Angiopoietina/genética , Proteína 4 Semelhante a Angiopoietina/metabolismo , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Proteínas de Ligação a DNA , Metaloproteinase 2 da Matriz , Metaloproteinase 9 da Matriz/genética , Camundongos Nus , Oncogenes/genética , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/metabolismo , Neoplasias Ovarianas/patologia , Proteínas Proto-Oncogênicas c-akt , RNA Interferente Pequeno , Fatores de Transcrição
19.
Front Bioeng Biotechnol ; 10: 964814, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36159685

RESUMO

Carbon dots (CDs), a new zero-dimensional material, have ignited a revolution in the fields of sensing, bioimaging, and biomedicine. However, the difficulty of preparing CDs with Fenton-like catalytic properties has seriously hindered their application in the diagnosis of oxidation/reduction biomolecules or metal ions. Here, an innovative method was successfully established to synthesize Mn3+/Mn4+ ion-doped blue-green fluorescent CDs with Fenton-like catalytic properties using manganese acetate as the manganese source. Specifically, the CDs prepared here were equipped with functional groups of -COOH, NH2, C=O, and Mn-O, offering the possibility to function as a fluorescence sensor. More importantly, the introduction of manganese acetate resulted in the preparation of CDs with Fenton-like catalytic properties, and the dual-signal fluorescence detection of dopamine (DA) was realized with linear ranges of 100-275 nM and 325-525 nM, and the detection limits were 3 and 12 nM, respectively. In addition, due to the Fenton-like catalytic activity of Mn3+/Mn4+ ion-doped CDs, the material has broad application prospects in the detection of oxidation/reduction biomolecules or metal ions related to disease diagnosis and prevention.

20.
Front Cardiovasc Med ; 9: 951695, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36093129

RESUMO

Background: Atrial fibrillation (AF) is an arrhythmia that is prevalent globally, and its incidence grows exponentially with aging. Non-vitamin K antagonist oral anticoagulants (NOACs) have been developed in recent years, and it challenges the supremacy of warfarin for thromboembolism prophylaxis in AF. Nevertheless, there are limited data specifically evaluating the real-life use of NOACs in elderly patients with AF in China. Methods: This is a national, multicenter, non-interventional, cross-sectional study that enrolls patients with AF aged 75 years and above from 31 institutions across China. Data were collected using the Hospital Information System. The primary outcomes include (1) profiles of NOAC use in the elderly; (2) frequency of inappropriate NOAC use based on guidelines and approved labeling recommendations; (3) exploring potential risk factors related to NOACs inappropriate use; and (4) creating a prediction tool for inappropriate NOACs use. Conclusion: The results of this study reveal the prevalence, risk factors, and corresponding prediction tool of inappropriate NOACs use in older patients with AF in China, as well as provide valuable insights into the clinical application of NOACs in high-risk populations in the real-world setting. Clinical trial registration: www.ClinicalTrials.gov, identifier: NCT05361889.

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