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1.
Allergol Immunopathol (Madr) ; 52(2): 60-67, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38459892

RESUMO

OBJECTIVE: To explore the role of Y-box binding protein 1 (YBX-1) in the lipopolysaccharide (LPS)-stimulated inflammation and oxidative stress of BEAS-2B cell line and clarify the underlying mechanism. METHODS: LPS-stimulated BEAS-2B cells were used as a cell model of sepsis-stimulated acute lung injury (ALI). Immunoblot and quantitative polymerase chain reaction assays were used to detect the expression of YBX-1 in LPS-stimulated BEAS-2B cells. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide, TdT-mediated dUTP nick end labeling, and immunoblot assays were conducted to determine the effects of YBX-1 on cell survival. JC-1 staining and adenosine triphosphate production were used to detect the effects of YBX-1 on mitochondrial function. Immunostaining and enzyme-linked immunosorbent serologic assay were performed to examine the effects of YBX-1 on the inflammation and oxidative stress of cells. Immunoblot assay was conducted to confirm the mechanism. RESULTS: YBX-1 was lowly expressed in LPS-stimulated BEAS-2B cells and enhanced the survival of LPS-stimulated lung epithelial cells. In addition, YBX-1 improved mitochondrial function of LPS-stimulated BEAS-2B cells. YBX-1 inhibited the inflammation and oxidative stress of LPS-stimulated BEAS-2B cells. Mechanically, YBX-1 inhibited mitogen-activated protein kinase (MAPK) axis, thereby alleviating sepsis-stimulated ALI. CONCLUSION: YBX-1 alleviated inflammation and oxidative stress of LPS-stimulated BEAS-2B cells via MAPK axis.


Assuntos
Lesão Pulmonar Aguda , Sepse , Proteína 1 de Ligação a Y-Box , Humanos , Lesão Pulmonar Aguda/tratamento farmacológico , Lesão Pulmonar Aguda/metabolismo , Células Epiteliais , Inflamação/metabolismo , Lipopolissacarídeos/farmacologia , Pulmão , Proteínas Quinases Ativadas por Mitógeno/metabolismo , NF-kappa B/metabolismo , Sepse/complicações , Sepse/metabolismo , Proteína 1 de Ligação a Y-Box/metabolismo
2.
Rev Esp Enferm Dig ; 2023 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-36926944

RESUMO

Symptomatic splenic cyst is usually managed by surgical resection or ultrasound-guided percutaneous sclerotherapy. In the present case, we demonstrated the safety and feasibility of endoscopic ultrasound-guided sclerotherapy for treatment of splenic cyst. As far as we known. This is the first case report concerning EUS-guided sclerotherapy for splenic cyst.

3.
Entropy (Basel) ; 25(12)2023 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-38136469

RESUMO

The presence of information asymmetry can hinder the public's ability to make well-informed decisions, resulting in unwarranted suspicion and the widespread dissemination of rumors. Therefore, it is crucial to provide individuals with consistent and dependable scientific education. Regular popular science education is considered a periodic impulsive intervention to mitigate the impact of information asymmetry and promote a more informed and discerning public. Drawing on these findings, this paper proposes a susceptible-hesitant-infected-refuting-recovered (SHIDR) rumor-spreading model to explain the spread of rumors. The model incorporates elements such as time delay, nonlinear incidence, and refuting individuals. Firstly, by applying the comparison theorem of an impulsive differential equation, we calculate two thresholds for rumor propagation. Additionally, we analyze the conditions of global attractiveness of the rumor-free periodic solution. Furthermore, we consider the condition for the rumor's permanence. Finally, numerical simulations are conducted to validate the accuracy of our findings. The results suggest that increasing the proportion of impulsive vaccination, reducing the impulsive period, or prolonging the delay time can effectively suppress rumors.

4.
Small ; 18(29): e2202623, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35754173

RESUMO

Despite the excellent optoelectronic properties, organic-inorganic hybrid perovskite solar cells (PSCs) still present significant challenges in terms of ambient stability. CsPbI2 Br, a member of all-inorganic perovskites, may respond to this challenge because of its inherent high stability against light, moisture, and heat, and therefore has gained tremendous attraction recently. However, the practical application of CsPbI2 Br is still impeded by the notorious phenomenon of photoinduced halide segregation. Herein, by applying first-principles calculations, the stability, electronic structure, defect properties, and ion-diffusion properties of the stoichiometric CsPbI2 Br (110) surface and that with the adsorption of KX (X = Cl, Br, I) are systematically investigated. It is found that the adsorbed KX can serve as an external substitute of the halogen vacancies on the surface, therefore inhibiting halogen segregation and improving the stability of the CsPbI2 Br surface. The KX can also eliminate deep-level defect states caused by antisites, thereby contributing to the promoted optoelectronic properties of CsPbI2 Br. The mechanistic understanding of surface passivation in this work can lay the foundation for the future design of CsPbI2 Br PSCs with optimized optoelectronic performance.

5.
Zhong Nan Da Xue Xue Bao Yi Xue Ban ; 45(10): 1266-1268, 2020 Oct 28.
Artigo em Inglês, Chinês | MEDLINE | ID: mdl-33268591

RESUMO

Subphrenic splenic implantation is a rare disease, usually occurred followed the splenic trauma and splenectomy. Surgeries are often necessary for diagnosing and treating it. A 46-year-old male post-splenectomy patient, tolerating abdominal bloating and pain for more than 1 year, was admitted to the Second Xiangya Hospital, Central South University. Fundus bulge suggested a possibility of stromal tumors originating from the muscularispropria layer with endoscopic ultrasound. Slightly stomachic thickness was detected using enhanced computed tomography (CT). Without any improvement for symptoms after medication, the patient strongly requested to undergo an endoscopic therapy. Natural orifice transluminal endoscopic surgery (NOTES) result confirmed it as subphrenic splenic implantation with postoperative pathology. In this case, NOTES helped us to confirm the diagnosis, relieve the symptoms, as well as prevent secondary surgery injury, which would be helpful to other clinicians.


Assuntos
Fundo Gástrico , Esplenectomia , Endoscopia , Humanos , Complicações Intraoperatórias , Masculino , Pessoa de Meia-Idade , Esplenectomia/efeitos adversos , Tomografia Computadorizada por Raios X
8.
ACS Omega ; 9(4): 4664-4672, 2024 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-38313495

RESUMO

The resource utilization of phosphogypsum (PG) is the key to promote the green development of the phosphorus chemical industry. The natural environment and public safety are significantly threatened by the enormous volume of PG storage. In this study, Ca and S were successfully recovered from the PG via a multistep precipitation in the NaOH-BaCO3 system. The alkali solution can be recycled five times, with a first recovery ratio of about 97.9%, and the decomposition ratio of PG remained above 70% after five cycles. In addition, the recovery ratios of Ca and S in PG are 99.9 and 82.5%, respectively. The product of BaSO4 can be used as a weighting agent for oil and natural gas drilling mud. The BaSO4 can also be used as wave-absorbing materials, and its reflection loss value reaches 97.8% of the analytical purity BaSO4. This work provides a new idea for the efficient recycling of Ca and S in PG with an outstanding application prospect.

9.
Neural Netw ; 172: 106130, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38242010

RESUMO

The significant advancement in deep learning has made it feasible to extract gender from faces accurately. However, such unauthorized extraction would pose potential threats to individual privacy. Existing protection schemes for gender privacy have exhibited satisfactory performance. Nevertheless, they suffer from gender inference from gender-related attributes and fail to support the recovery of the original image. In this paper, we propose a novel gender privacy protection scheme that aims to enhance gender privacy while supporting reversibility. Firstly, our scheme utilizes continuously optimized adversarial perturbations to prevent gender recognition from unauthorized classifiers. Meanwhile, gender-related attributes are concealed for classifiers, which prevents the inference of gender from these attributes, thereby enhancing gender privacy. Moreover, an identity preservation constraint is added to maintain identity preservation. Secondly, reversibility is supported by a reversible image transformation, allowing the perturbations to be securely removed to losslessly recover the original face when required. Extensive experiments demonstrate the effectiveness of our scheme in gender privacy protection, identity preservation, and reversibility.


Assuntos
Relações Interpessoais , Privacidade , Reconhecimento Psicológico
10.
Sci Total Environ ; : 174775, 2024 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-39009160

RESUMO

Biochar (BC) granulation, yielding BC-based spheres, serves as an eco-friendly, cost-effective and efficient adsorbent for the removal of potential toxic elements (PTEs) from contaminated agricultural soils. The effect of BC-based spheres on mineral nutrients while effectively removing PTEs from contaminated soils is worth investigating. In this study, we utilized natural clay minerals, magnetic minerals and BC to produce water-hardened magnetic composite biochar sphere (WMBCS) that was capable of removing PTEs from composite contaminated agricultural soils. We explored the effect of WMBCS on minerals (Al, Ca, Fe, Mn, Na, Mg, Si, K, P, NH4+, and NO3-) in the removal of soil PTEs. WMBCS was a mineral nutrient-rich, recyclable, alkaline BC-based sphere that removes Cd (23.07-29.20 %), Pb (27.68-31.10 %), and As (26.17-37.48 %) from soils after three regeneration cycles. The effect of WMBCS on mineral nutrients varies depending on element type, BC and soil type. Compared to water-hardened magnetic composite phosphate modified biochar spheres (WMPBCS), water-hardened magnetic composite unmodified biochar spheres (WMUBCS) had more significant effect on Ca, Mg, Mn, Al and NH4+ in alkaline soils, but a greater effect on Ca, Mg, Mn, Fe and NO3- in acidic soils. Additionally, WMBCS displayed a more pronounced impact on mineral nutrients in alkaline soils than in acidic soils. The application of WMBCS reduced the accumulation of PTEs in wheat (18.40-84.70 %) and rice (27.96-88.66 %), but significantly inhibited seed germination and altered the uptake of mineral nutrients by seedlings due to its effects on soil physicochemical properties and mineral nutrient dynamics. Overall, WMBCS is suitable as a potential amendment for the remediation of soils co-contaminated with Cd, As, and Pb, but its effects on mineral nutrients cannot be overlooked, particularly in agricultural soils.

11.
Artigo em Inglês | MEDLINE | ID: mdl-38669165

RESUMO

Structure-guided image completion aims to inpaint a local region of an image according to an input guidance map from users. While such a task enables many practical applications for interactive editing, existing methods often struggle to hallucinate realistic object instances in complex natural scenes. Such a limitation is partially due to the lack of semantic-level constraints inside the hole region as well as the lack of a mechanism to enforce realistic object generation. In this work, we propose a learning paradigm that consists of semantic discriminators and object-level discriminators for improving the generation of complex semantics and objects. Specifically, the semantic discriminators leverage pretrained visual features to improve the realism of the generated visual concepts. Moreover, the object-level discriminators take aligned instances as inputs to enforce the realism of individual objects. Our proposed scheme significantly improves the generation quality and achieves state-of-the-art results on various tasks, including segmentation-guided completion, edge-guided manipulation and panoptically-guided manipulation on Places2 datasets. Furthermore, our trained model is flexible and can support multiple editing use cases, such as object insertion, replacement, removal and standard inpainting. In particular, our trained model combined with a novel automatic image completion pipeline achieves state-of-the-art results on the standard inpainting task.

12.
Nat Commun ; 15(1): 3702, 2024 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-38697969

RESUMO

Hippocampal place cells represent the position of a rodent within an environment. In addition, recent experiments show that the CA1 subfield of a passive observer also represents the position of a conspecific performing a spatial task. However, whether this representation is allocentric, egocentric or mixed is less clear. In this study we investigated the representation of others during free behavior and in a task where female mice learned to follow a conspecific for a reward. We found that most cells represent the position of others relative to self-position (social-vector cells) rather than to the environment, with a prevalence of purely egocentric coding modulated by context and mouse identity. Learning of a pursuit task improved the tuning of social-vector cells, but their number remained invariant. Collectively, our results suggest that the hippocampus flexibly codes the position of others in multiple coordinate systems, albeit favoring the self as a reference point.


Assuntos
Região CA1 Hipocampal , Animais , Feminino , Região CA1 Hipocampal/fisiologia , Região CA1 Hipocampal/citologia , Camundongos , Camundongos Endogâmicos C57BL , Células de Lugar/fisiologia , Recompensa , Comportamento Animal/fisiologia
13.
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 33(1): 31-4, 2013 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-23596782

RESUMO

OBJECTIVE: To observe the effects of Shugan Jianpi Gusui Recipe (SJGR) on multiple sclerosis (MS). METHODS: A case cohort study was used. The MS patients were assigned to the test group (14 cases) and the control group (21 cases) according to whether they would combine with Chinese herbs. Corticosteroids or gamma globulin was administered to all patients in the acute phase. SJGR was administered to patients in the test group in the remission phase, while those in the control group were not treated or treated by azathioprine alone. They were followed-up for a long time after their first visits. The observation time ranged 10-131 successive months. The recurrence intervals and the yearly average recurrence times were calculated in the two groups. RESULTS: When compared with before treatment, the recurrence interval was obviously prolonged, and the yearly average recurrence times decreased in the test group after treatment with statistical difference (P < 0.05). There was statistical difference in the recurrence interval and the yearly average recurrence times between the test group and the control group (P < 0.05). CONCLUSIONS: SJGR showed better effects in prolonging the recurrence interval and reducing the yearly average recurrence times of MS patients. It is worth further researches.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Esclerose Múltipla/tratamento farmacológico , Corticosteroides/uso terapêutico , Adulto , Azatioprina/uso terapêutico , Humanos , Pessoa de Meia-Idade , Recidiva , gama-Globulinas/uso terapêutico
14.
Front Neurorobot ; 17: 1234129, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37622128

RESUMO

Introduction: Metric learning, as a fundamental research direction in the field of computer vision, has played a crucial role in image matching. Traditional metric learning methods aim at constructing two-branch siamese neural networks to address the challenge of image matching, but they often overlook to cross-source and cross-view scenarios. Methods: In this article, a multi-branch metric learning model is proposed to address these limitations. The main contributions of this work are as follows: Firstly, we design a multi-branch siamese network model that enhances measurement reliability through information compensation among data points. Secondly, we construct a non-local information perception and fusion model, which accurately distinguishes positive and negative samples by fusing information at different scales. Thirdly, we enhance the model by integrating semantic information and establish an information consistency mapping between multiple branches, thereby improving the robustness in cross-source and cross-view scenarios. Results: Experimental tests which demonstrate the effectiveness of the proposed method are carried out under various conditions, including homologous, heterogeneous, multi-view, and crossview scenarios. Compared to the state-of-the-art comparison algorithms, our proposed algorithm achieves an improvement of ~1, 2, 1, and 1% in terms of similarity measurement Recall@10, respectively, under these four conditions. Discussion: In addition, our work provides an idea for improving the crossscene application ability of UAV positioning and navigation algorithm.

15.
J Clin Med ; 12(6)2023 Mar 09.
Artigo em Inglês | MEDLINE | ID: mdl-36983155

RESUMO

(1) Background: The accurate diagnosis of esophageal strictures is quite critical for optimizing medical intervention. However, the diagnosis of suspicious malignant esophageal strictures with intact mucosa appearance and negative biopsy results is challenging. This study aimed to evaluate the role of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) in the diagnosis of suspicious esophageal strictures. (2) Methods: We retrospectively analyzed the cases with suspicious malignant esophageal strictures that underwent EUS-FNA, with or without rapid on-site evaluation (ROSE), in our hospital from April 2017 to September 2022. Their clinical manifestations, imaging examinations, gastroscopic examinations, EUS-FNA results, and therapeutic strategies were retrospectively recorded and analyzed. (3) Results: A total of 23 patients (15 male and 8 female) were enrolled in this study. Based on EUS-FNA results, 18 patients were diagnosed with malignancies, including 16 cases of primary esophageal cancer (13 squamous carcinomas and 3 adenocarcinomas), 1 case of mediastinal cancer, and 1 case of metastatic esophageal cancer; 1 case of tuberculosis was also confirmed by EUS-FNA. Among 4 cases of ambiguous diagnosis with EUS-FNA, 1 was diagnosed with an esophageal glomus tumor after surgical removal, and 2 patients survived for several years without medical intervention, which hinted at the possibility of benign esophageal strictures. No major complications, including bleeding or perforation, were observed. (4) Conclusions: EUS-FNA may serve as a safe and effective diagnostic tool in suspicious malignant esophageal strictures with accurate specimen acquisition, especially for biopsy-negative cases.

17.
Dig Dis Sci ; 57(5): 1253-60, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22350782

RESUMO

BACKGROUND: Invasion and metastasis are the hallmarks of advanced gastric cancer progression. Therefore, it is urgent to overcome metastasis in order to improve the survival of gastric cancer patients. AIMS: This study aimed to examine the expression of ZEB2 in gastric cancer samples and analyze its correlation with clinicopathologic features. In addition, the molecular mechanism by which ZEB2 contributes to gastric cancer metastasis will be explored. METHODS: ZEB2 expression in clinical gastric cancer samples was evaluated by immunohistochemical analysis. ZEB2 was knocked-down in HGC27 gastric cancer cells by shRNA and the effects on cell invasion and migration were examined by in vitro cell invasion and migration assays. The expression of epithelial marker E-cadherin, mesenchymal markers fibronecin and vimentin, and MMPs was detected by western blot analysis. RESULTS: The expression of ZEB2 was positively correlated with the depth of invasion, lymph node metastasis and TNM stage. In addition, patients with positive ZEB2 expression showed a significantly shorter overall survival time than did patients with negative ZEB2. shRNA mediated knockdown of ZEB2 resulted in reduced invasion and migration of HGC27 cells, along with the upregulation of E-cadherin and downregulation of fibronecin, vimentin, MMP2, and MMP9. CONCLUSIONS: ZEB2 expression is closely associated with the clinicopathological parameters of gastric cancer. ZEB2 promotes gastric cancer cell migration and invasion at least partly via the regulation of epithelial-mesenchymal transition. ZEB2 is a potential target for gene therapy of aggressive gastric cancer.


Assuntos
Transição Epitelial-Mesenquimal/genética , Proteínas de Homeodomínio , Proteínas Repressoras , Neoplasias Gástricas , Estômago/patologia , Caderinas/metabolismo , Linhagem Celular Tumoral , Movimento Celular/genética , Feminino , Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Técnicas de Silenciamento de Genes , Proteínas de Homeodomínio/genética , Proteínas de Homeodomínio/metabolismo , Humanos , Metástase Linfática , Masculino , Metaloproteinases da Matriz/metabolismo , Pessoa de Meia-Idade , Invasividade Neoplásica/genética , Estadiamento de Neoplasias , Prognóstico , RNA Interferente Pequeno/metabolismo , Proteínas Repressoras/genética , Proteínas Repressoras/metabolismo , Neoplasias Gástricas/genética , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/patologia , Análise Serial de Tecidos , Vimentina/metabolismo , Homeobox 2 de Ligação a E-box com Dedos de Zinco
19.
Oncol Lett ; 22(4): 714, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34457069

RESUMO

Colorectal cancer (CRC) is one of the most common malignancies worldwide. Via analysis using The Cancer Genome Atlas database, the present study identified 1,835 genes that were differentially expressed in CRC, including 811 upregulated and 1,024 downregulated genes. Enrichment analyses using the Database for Annotation, Visualization and Integrated Discovery tool revealed that these differentially expressed genes were associated with the regulation of CRC progression by modulating multiple pathways, such as 'Cell Cycle, Mitotic', 'DNA Replication', 'Mitotic M-M/G1 phases' and 'ATM pathway'. To identify the key genes in CRC, protein-protein interaction (PPI) network analysis was performed and the hub modules in upregulated and downregulated PPI networks were identified. Ubiquitin-conjugating enzyme E2 T (UBE2T), a member of the E2 family, was identified to be a key regulator in CRC. To the best of our knowledge, the present study was the first to demonstrate that UBE2T expression was upregulated in CRC samples compared with normal tissues. Kaplan-Meier analysis revealed that higher expression levels of UBE2T were associated with worse prognosis compared with lower UBE2T expression levels in CRC. Additionally, the present study demonstrated that knockdown of UBE2T inhibited CRC cell proliferation. Flow cytometry assays revealed that UBE2T knockdown induced cell cycle arrest at G1 phase and apoptosis in vitro. These results suggested that UBE2T may be a novel potential biomarker for CRC.

20.
J Hazard Mater ; 409: 125022, 2021 05 05.
Artigo em Inglês | MEDLINE | ID: mdl-33421873

RESUMO

Biochar added to the soil is generally difficult to separate. In order to solve the problem of separating biochar from soil, this paper applies a hydraulic silicate gel material to the preparation of biochar. Non-magnetic silicate bonded biochar (SBC) and magnetic silicate bonded biochar (MSBC) with hydraulic properties were prepared. The new silicate bonded biochar has good adsorption performance, separation and recovery characteristics. The findings are as follows: (1) after three times of soil remediation, the silicate bonded biochar still had good mechanical properties, and the compressive strength was not attenuated, remaining between 210 and 270 N. (2) After three times of SBC and MSBC remediation, total Cd in soil decreased by 29.33% and 31.82% respectively, and available Cd decreased by 60.82% and 62.74% respectively. (3) After three cycles, the recovery rates of SBC and MSBC both exceeded 94.88%, and the highest adsorption regeneration rates of SBC and MSBC reached 83.09% and 92.06%, respectively. (4) The Cd content of wheat after SBC and MSBC repair was reduced by 29.67-37.36% and 47.25-63.74%, respectively.

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