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1.
Transl Lung Cancer Res ; 13(9): 2435-2447, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39430340

RESUMO

Background: Malignant pleural effusion (MPE) is associated with poor prognosis in patients with advanced lung adenocarcinoma (LUAD), and abnormal activation of epidermal growth factor receptor (EGFR) plays a crucial role in the development of LUAD. This study aimed to investigate the correlation between EGFR mutations and the occurrence of MPE in patients with LUAD and evaluate the effect of EGFR mutations on the prognosis of patients with LUAD with MPE. Methods: A case-control study design was adopted that included patients pathologically diagnosed with LUAD. Clinical data were collected, and patients were divided into the MPE group and the non-MPE (N-MPE) group based on the presence of MPE. Propensity score matching (PSM) was used to control for confounding factors. The correlation between EGFR mutations and the occurrence of MPE in LUAD was initially examined. Additionally, various factors affecting the overall survival (OS) of patients with LUAD and MPE were evaluated. Results: A total of 849 patients were included in the study. After 1:2 PSM, there were 180 patients in the MPE group and 360 in the N-MPE group. The EGFR mutation rate was significantly higher in the MPE group compared to the N-MPE group [62.7% vs. 50.2%; odds ratio (OR) =1.668; P=0.006]. This difference was primarily attributed to the T790M mutation (8.3% vs. 1.3%; OR =8.015; P<0.001), but no significant differences observed in other mutation sites between the groups. Further evaluation of factors affecting OS in patients with LUAD and MPE revealed that EGFR mutation was an independent protective factor for OS [hazard ratio (HR) 0.662, 95% CI: 0.456-0.962; P=0.03]. For patients with LUAD, MPE, and EGFR mutations, treatment with third-generation EGFR-tyrosine kinase inhibitors (TKIs) alone (HR 0.466, 95% CI: 0.233-0.930; P=0.03) or sequential first- and third-generation EGFR-TKIs (HR 0.385, 95% CI: 0.219-0.676; P=0.001) was associated with better median OS compared to first-generation EGFR-TKIs alone (first-generation EGFR-TKIs: 35 months, 95% CI: 28.4-41.6; third-generation EGFR-TKIs: 50 months, 95% CI: 37.3-62.7; sequential first- and third-generation EGFR-TKIs: 51 months, 95% CI: 45.6-56.4; P<0.001). Conclusions: This study found there to be a positive correlation between EGFR mutations, particularly the T790M mutation, and MPE in patients with LUAD. EGFR mutation was associated with improved OS in patients with LUAD and MPE. For patients with LUAD, MPE, and EGFR mutations, sequential treatment with first- and third-generation EGFR-TKIs or third-generation EGFR-TKIs alone is recommended, as these regimens provide significant benefit to OS.

2.
Bioorg Chem ; 153: 107832, 2024 Sep 19.
Artigo em Inglês | MEDLINE | ID: mdl-39317039

RESUMO

The genome sequencing of Aspergillus terreus reveals that the vast number of predicted biosynthetic gene clusters have not reflected by the metabolic profile observed under conventional culture conditions. In this study, a silent azaphilone biosynthetic gene cluster was activated by overexpressing a pathway-specific transcription factor gene2642 in marine-derived fungus A. terreus RA2905. Consequently, twenty azaphilone compounds were identified from the OE2642 mutant, including 11 new azaphilones and their precursors, azasperones C-J (1-5, 7-9) and preazasperones A-C (15-17). The structures of those new compounds were unambiguously determined on the basis of NMR and HRESIMS spectra analysis, and the absolute configurations were established depending on ECD calculations. Compounds 1 and 2 were the rarely reported naturally occurring azaphilones with 2-N coupled phenyl-derivative. The bioactivity assay revealed that compounds 18-20 exhibited significant anti-inflammatory activity. Based on the occurrence of diverse intermediates and the putative gene functions, a plausible biosynthetic pathway of these compounds was proposed. The above results demonstrated that overexpression of the pathway-specific transcription factor presents a promising approach for enriching fungal secondary metabolites and accelerating the targeted discovery of novel biosynthetic products.

3.
J Trop Pediatr ; 70(4)2024 Jul 13.
Artigo em Inglês | MEDLINE | ID: mdl-39122654

RESUMO

Cathepsin G (CTSG) plays an important role in the regulation of immune processes. Accumulated studies show that CTSG is involved in the onset and development of type 1 diabetes mellitus (T1DM). As the genetic background of T1DM varies widely among populations, we aimed to study the relationship between genetic polymorphisms in CTSG and T1DM susceptibility in Chinese populations. A total of 141 patients with T1DM and 200 healthy controls were enrolled in the study. Serum CTSG expression was detected using enzyme-linked immunosorbent assay (ELISA). Genotyping of two selected single nucleotide polymorphisms (SNPs) (rs2236742 and rs2070697) of CTSG was performed using PCR and Sanger sequencing. CTSG expression in patients with T1DM was significantly higher than in the control group. Alleles C and T of CTSG SNP rs2236742 were increased in T1DM. No significant associations were found for the SNP rs2070697. Our results indicate that the CTSG rs2236742 allele (C/T) is associated with T1DM in Chinese children and may serve as a new biomarker for predicting T1DM susceptibility.


Assuntos
Alelos , Diabetes Mellitus Tipo 1 , Predisposição Genética para Doença , Genótipo , Polimorfismo de Nucleotídeo Único , Humanos , Diabetes Mellitus Tipo 1/genética , Feminino , Masculino , Criança , Estudos de Casos e Controles , China/epidemiologia , Pré-Escolar , Frequência do Gene , Ensaio de Imunoadsorção Enzimática , Adolescente , Reação em Cadeia da Polimerase , Biomarcadores/sangue , População do Leste Asiático
4.
Micromachines (Basel) ; 15(8)2024 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-39203601

RESUMO

GaN HEMT devices are sensitive to the single event effect (SEE) caused by heavy ions, and their reliability affects the safe use of space equipment. In this work, a Ge ion (LET = 37 MeV·cm2/mg) and Bi ion (LET = 98 MeV·cm2/mg) were used to irradiate Cascode GaN power devices by heavy ion accelerator experimental device. The differences of SEE under three conditions: pre-applied electrical stress, different LET values, and gate voltages are studied, and the related damage mechanism is discussed. The experimental results show that the pre-application of electrical stress before radiation leads to an electron de-trapping effect, generating defects within the GaN device. These defects will assist in charge collection so that the drain leakage current of the device will be enhanced. The higher the LET value, the more electron-hole pairs are ionized. Therefore, the charge collected by the drain increases, and the burn-out voltage advances. In the off state, the more negative the gate voltage, the higher the drain voltage of the GaN HEMT device, and the more serious the back-channel effect. This study provides an important theoretical basis for the reliability of GaN power devices in radiation environments.

5.
Surg Endosc ; 38(9): 5228-5238, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39046495

RESUMO

INTRODUCTION AND OBJECTIVES: Laparoscopic splenectomy and esophagogastric devascularization (LSED) are minimally invasive, effective, and safe in treating esophageal-fundic variceal bleeding with portal hypertension (PHT). The study aimed to assess the learning curve of LSED by cumulative summation (CUSUM) analysis. The 10-year follow-up data for LSED and open surgery were also examined. PATIENTS AND METHODS: Five hundred and ninety-four patients were retrospectively analyzed. Operation time, intraoperative blood loss, open operation conversion, and postoperative complications were selected as the evaluation indicators of surgical ability. The learning curve of LESD was assessed by the CUSUM approach. Patient features, perioperative indices, and 10-year follow-up data were examined. RESULTS: Totally 236 patients underwent open surgery, and 358 underwent LSED. Patient characteristics were similar between groups. The LSED patients experienced less intraoperative blood loss, fewer complications, and faster recovery compared to the open surgery cohort. The learning curve of LESD was maximal for a case number of 50. Preoperative general characteristics were comparable for both stages. But the skilled stage had decreased operation time, reduced blood loss, less postoperative complications, and better recovery compared to the learning stage. The LSED group had higher recurrent hemorrhage-free survival rate and increased overall survival in comparison with cases administered open surgery in the 10-year follow-up. Free-liver cancer rates were similar between two groups. CONCLUSIONS: About 50 cases are needed to master the LSED procedure. Compared to open surgery, LSED is a safer, feasible, and safe procedure for PHT patients, correlating with decreased rebleeding rate and better overall survival.


Assuntos
Varizes Esofágicas e Gástricas , Hipertensão Portal , Laparoscopia , Curva de Aprendizado , Esplenectomia , Humanos , Masculino , Feminino , Hipertensão Portal/cirurgia , Hipertensão Portal/complicações , Pessoa de Meia-Idade , Laparoscopia/métodos , Esplenectomia/métodos , Estudos Retrospectivos , Seguimentos , Varizes Esofágicas e Gástricas/cirurgia , Adulto , Duração da Cirurgia , Perda Sanguínea Cirúrgica/estatística & dados numéricos , Hemorragia Gastrointestinal/cirurgia , Hemorragia Gastrointestinal/etiologia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Esôfago/cirurgia , Esôfago/irrigação sanguínea , Resultado do Tratamento , Idoso , Estômago/irrigação sanguínea , Estômago/cirurgia
6.
J Leukoc Biol ; 2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-38952265

RESUMO

Aryl hydrocarbon receptor (AhR) is a key transcription factor that modulates the differentiation of T helper 17 (Th17) cells. How AhR is regulated at the post-translational level in Th17 cells remains largely unclear. Here we identify USP21 as a newly defined deubiquitinase of AhR. We demonstrate that USP21 interacts with and stabilizes AhR by removing the K48-linked polyubiquitin chains from AhR. Interestingly, USP21 inhibits the transcriptional activity of AhR in a deubiquitinating-dependent manner. USP21 deubiquitinates AhR at the K432 residue, and the maintenance of ubiquitination on this site is required for the intact transcriptional activity of AhR. Moreover, the deficiency of USP21 promotes the differentiation of Th17 cells both in vitro and in vivo. Consistently, adoptive transfer of USP21 deficient naïve CD4+ T cells elicits more severe colitis in Rag1-/- recipients. Therefore, our study reveals a novel mechanism in which USP21 deubiquitinates AhR and negatively regulates the differentiation of Th17 cells.

7.
Front Mol Neurosci ; 17: 1398665, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38836117

RESUMO

Background: Multiple sclerosis (MS) is an immune-mediated disease characterized by inflammatory demyelinating lesions in the central nervous system. Studies have shown that the inflammation is vital to both the onset and progression of MS, where aging plays a key role in it. However, the potential mechanisms on how aging-related inflammation (inflammaging) promotes MS have not been fully understood. Therefore, there is an urgent need to integrate the underlying mechanisms between inflammaging and MS, where meaningful prediction models are needed. Methods: First, both aging and disease models were developed using machine learning methods, respectively. Then, an integrated inflammaging model was used to identify relative risk factors, by identifying essential "aging-inflammation-disease" triples. Finally, a series of bioinformatics analyses (including network analysis, enrichment analysis, sensitivity analysis, and pan-cancer analysis) were further used to explore the potential mechanisms between inflammaging and MS. Results: A series of risk factors were identified, such as the protein homeostasis, cellular homeostasis, neurodevelopment and energy metabolism. The inflammaging indices were further validated in different cancer types. Therefore, various risk factors were integrated, and even both the theories of inflammaging and immunosenescence were further confirmed. Conclusion: In conclusion, our study systematically investigated the potential relationships between inflammaging and MS through a series of computational approaches, and could present a novel thought for other aging-related diseases.

8.
Spectrochim Acta A Mol Biomol Spectrosc ; 321: 124708, 2024 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-38936210

RESUMO

Copper nanoclusters (FA@CuNCs) emitting blue fluorescence were successfully developed via a one-pot technique. In this method, the copper chloride, folic acid and hydrazine hydrate were applied as a precursor, protective agent and reducing agent, respectively. The absorption, fluorescence excitation and emission spectra of FA@CuNCs were carried out by using ultraviolet-visible and fluorescence spectrometry, respectively. The morphology, particle size, functional groups, oxidation states of elements of FA@CuNCs were discussed via using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The stability of FA@CuNCs was studied under various conditions, such as storage time at 25 ℃, ultraviolet radiation time, sodium chloride solutione and pH. The FA@CuNCs displayed blue fluorescence under the excitation wavelength of 361 nm, and the fluorescence quantum yield was 7.45 %. As a result of the inner filter effect, the alizarin red could significantly weaken the blue fluorescence of FA@CuNCs. Thus, the as-prepared FA@CuNCs could be utilized as fluorescence nanosensors for the trace determination of alizarin red. This platform suggested an excellent linear range for alizarin red varying from 0.5 to 200 µM with a fitting coefficient of 0.9955. The detection limit was calculated to be 0.064 µM in the light of the 3b/k (b and k refer to the standard deviation and slope of fitted curve, respectively). Furthermore, the as-developed FA@CuNCs could be used to detect the alizarin red in real samples and for the sensing of temperature.

9.
J Ethnopharmacol ; 331: 118297, 2024 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-38718890

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Ginkgo biloba is a traditional Chinese medicine extracted from the Ginkgophyta and is commonly used in the treatment of cardiovascular diseases in China. Clinical trials have demonstrated the clinical benefits of Ginkgo biloba extract (GBE) preparations for patients with unstable angina pectoris (UAP). AIM OF THE STUDY: The efficacy of different GBE preparations in treating UAP may vary, leading to a lack of guidance for physicians when choosing GBE preparations. How to make choices among different GBE preparations is a topic worthy of investigation. In order to clarify the efficacy differences among different GBE preparations, provide a reference for their optimal use conditions, this study was conducted. MATERIALS AND METHODS: This study included literature from eight databases from inception to November 2023. It included UAP patients, with the control group receiving conventional treatment and the treatment group receiving different GBE preparations in addition to conventional treatment. Angina efficacy, electrocardiogram (ECG) improvement, and frequency of angina were chosen as outcomes. This study employed a systematic review and Bayesian network meta-analysis, and the surface under the cumulative ranking (SUCRA) curve was used for estimating the efficacy ranking. RESULTS: A total of 98 studies involving 9513 patients and 9 interventions were included. Compared with conventional treatment, GBE preparations combined with conventional treatment had better efficacy in angina symptoms and ECG improvement. According to the SUCRA ranking, Shuxuening injection was most effective in improving angina symptoms and reducing the frequency of angina. Among oral GBE preparations, Ginkgo tablets had the best performance in improving angina symptoms and ECG manifestations, and reducing the frequency of angina. There was no significant difference in the incidence of adverse events between the treatment group and the control group, and all adverse events were mild and self-limiting. Compared with oral preparations, the incidence of adverse events for injections was higher. CONCLUSIONS: GBE preparations may alleviate angina symptoms and myocardial ischemia in the treatment of UAP with favorable safety. Shuxuening injection may be the most effective among all GBE preparations in improving angina symptoms, while Ginkgo tablets may perform best among oral formulations. The optimal use of GBE injection may be for rapidly alleviating angina symptoms and myocardial ischemia in patients with UAP, and oral formulation of GBE may be more suitable for the long-term treatment of patients with milder symptoms. SYSTEMATIC REVIEW REGISTRATION: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022361487, ID: CRD42022361487.


Assuntos
Angina Instável , Ginkgo biloba , Extratos Vegetais , Humanos , Extratos Vegetais/uso terapêutico , Extratos Vegetais/efeitos adversos , Extratos Vegetais/administração & dosagem , Angina Instável/tratamento farmacológico , Metanálise em Rede , Resultado do Tratamento , Extrato de Ginkgo
11.
Gene ; 925: 148602, 2024 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-38782218

RESUMO

OBJECTIVE: ACAN gene variants, prevalent monogenic defects linked to short stature, are characterized by impaired cartilage generation in growth plates. We aimed to unravel the genetic basis of short stature in a specific pedigree by investigating the role of a novel non-canonical splicing-site variant, c.630-13G > A, within the ACAN gene. METHOD: Sanger sequencing was used for pedigree verification, and the effects of this variant on mRNA splicing were analyzed through minigene assay. RESULTS: The study revealed that this variant led to the creation of a previously unreported splice site in the fourth intron, resulting in the incorporation of an 11 bp sequence from the intron into the final transcript. This alteration led to a frameshift and formation of a premature termination codon, impacting the structure of the aggrecan protein. CONCLUSIONS: We document the pathogenicity of an ACAN non-canonical splicing-site variant, emphasizing the significance of considering intronic variants during genetic testing.


Assuntos
Agrecanas , Íntrons , Linhagem , Splicing de RNA , Humanos , Agrecanas/genética , Agrecanas/metabolismo , Feminino , Masculino , Nanismo/genética , Sítios de Splice de RNA/genética
12.
Adv Mater ; 36(30): e2402324, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38696823

RESUMO

Rechargeable all-solid-state lithium metal batteries (ASSLMBs) utilizing inorganic solid-state electrolytes (SSEs) are promising for electric vehicles and large-scale grid energy storage. However, the Li dendrite growth in SSEs still constrains the practical utility of ASSLMBs. To achieve a high dendrite-suppression capability, SSEs must be chemically stable with Li, possess fast Li transfer kinetics, and exhibit high interface energy. Herein, a class of low-cost, eco-friendly, and sustainable oxyhalide-nitride solid electrolytes (ONSEs), denoted as LixNyIz-qLiOH (where x = 3y + z, 0 ≤ q ≤ 0.75), is designed to fulfill all the requirements. As-prepared ONSEs demonstrate chemically stable against Li and high interface energy (>43.08 meV Å-2), effectively restraining Li dendrite growth and the self-degradation at electrode interfaces. Furthermore, improved thermodynamic oxidation stability of ONSEs (>3 V vs Li+/Li, 0.45 V for pure Li3N), arising from the increased ionicity of Li─N bonds, contributes to the stability in ASSLMBs. As a proof-of-concept, the optimized ONSEs possess high ionic conductivity of 0.52 mS cm-1 and achieve long-term cycling of Li||Li symmetric cell for over 500 h. When coupled with the Li3InCl6 SSE for high-voltage cathodes, the bilayer oxyhalide-nitride/Li3InCl6 electrolyte imparts 90% capacity retention over 500 cycles for Li||1 mAh cm-2 LiCoO2 cells.

13.
Pharmgenomics Pers Med ; 17: 171-181, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38681062

RESUMO

Purpose: Dysregulated liquid-liquid phase separation (LLPS) instigates tumorigenesis through biomolecular condensate dysfunction. However, the association between LLPS-associated genes and glioma remains underexplored. Patients and Methods: Differentially expressed genes (DEGs) of glioma were obtained from the GSE50161 dataset, including 34 glioma and 13 normal samples. We analyzed differentially expressed LLPS-related genes in glioma from public databases. These genes informed refined molecular subtyping on the TCGA-glioma dataset. CIBERSORT assessed immune cell infiltration across three subclusters. A prognostic model was devised using univariate and lasso Cox regressions on intersecting genes. Prognostic gene expression was validated in glioma cells via RT-qPCR. Results: A total of 673 differentially expressed LLPS-associated genes were identified in glioma. Three distinct molecular subtypes (C1, C2, and C3) of glioma were obtained with a marked variance in the expression of immune checkpoint genes PD1 and PDL1. Differences in immune cell infiltration were observed across subtypes. In addition, a tri-gene prognostic signature (TAGLN2, NTNG2, and IGF2BP2) was derived with significant survival differences between high and low-risk groups. The prognostic model displayed impressive AUC values for 1, 3, and 5-year survival in both training and validation sets. Further analysis highlighted a notable correlation between the three prognostic genes and immune cells in glioma samples. Furthermore, we found the upregulation of TAGLN2 and IGF2BP2 and the downregulation of NTNG2 in glioma tumors and cells. Conclusion: This study innovatively uncovers the significant role of LLPS-related genes in glioma tumor grading and prognosis. The constructed tri-gene prognostic model holds promise for enhancing personalized prognosis assessments and optimizing immunotherapy strategies for glioma patients.

14.
BMC Biotechnol ; 24(1): 19, 2024 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-38609923

RESUMO

BACKGROUND: Flavonoids are one of the bioactive ingredients of Lonicera macranthoides (L. macranthoides), however, their biosynthesis in the flower is still unclear. In this study, combined transcriptomic and targeted metabolomic analyses were performed to clarify the flavonoids biosynthesis during flowering of L. macranthoides. RESULTS: In the three sample groups, GB_vs_WB, GB_vs_WF and GB_vs_GF, there were 25, 22 and 18 differentially expressed genes (DEGs) in flavonoids biosynthetic pathway respectively. A total of 339 flavonoids were detected and quantified at four developmental stages of flower in L. macranthoides. In the three sample groups, 113, 155 and 163 differentially accumulated flavonoids (DAFs) were detected respectively. Among the DAFs, most apigenin derivatives in flavones and most kaempferol derivatives in flavonols were up-regulated. Correlation analysis between DEGs and DAFs showed that the down-regulated expressions of the CHS, DFR, C4H, F3'H, CCoAOMT_32 and the up-regulated expressions of the two HCTs resulted in down-regulated levels of dihydroquercetin, epigallocatechin and up-regulated level of kaempferol-3-O-(6''-O-acetyl)-glucoside, cosmosiin and apigenin-4'-O-glucoside. The down-regulated expressions of F3H and FLS decreased the contents of 7 metabolites, including naringenin chalcone, proanthocyanidin B2, B3, B4, C1, limocitrin-3,7-di-O-glucoside and limocitrin-3-O-sophoroside. CONCLUSION: The findings are helpful for genetic improvement of varieties in L.macranthoides.


Assuntos
Lonicera , Lonicera/genética , Apigenina , Quempferóis , Perfilação da Expressão Gênica , Flavonoides , Flores/genética , Glucosídeos
15.
Nature ; 627(8002): 101-107, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38418886

RESUMO

Li-ion batteries (LIBs) for electric vehicles and aviation demand high energy density, fast charging and a wide operating temperature range, which are virtually impossible because they require electrolytes to simultaneously have high ionic conductivity, low solvation energy and low melting point and form an anion-derived inorganic interphase1-5. Here we report guidelines for designing such electrolytes by using small-sized solvents with low solvation energy. The tiny solvent in the secondary solvation sheath pulls out the Li+ in the primary solvation sheath to form a fast ion-conduction ligand channel to enhance Li+ transport, while the small-sized solvent with low solvation energy also allows the anion to enter the first Li+ solvation shell to form an inorganic-rich interphase. The electrolyte-design concept is demonstrated by using fluoroacetonitrile (FAN) solvent. The electrolyte of 1.3 M lithium bis(fluorosulfonyl)imide (LiFSI) in FAN exhibits ultrahigh ionic conductivity of 40.3 mS cm-1 at 25 °C and 11.9 mS cm-1 even at -70 °C, thus enabling 4.5-V graphite||LiNi0.8Mn0.1Co0.1O2 pouch cells (1.2 Ah, 2.85 mAh cm-2) to achieve high reversibility (0.62 Ah) when the cells are charged and discharged even at -65 °C. The electrolyte with small-sized solvents enables LIBs to simultaneously achieve high energy density, fast charging and a wide operating temperature range, which is unattainable for the current electrolyte design but is highly desired for extreme LIBs. This mechanism is generalizable and can be expanded to other metal-ion battery electrolytes.

16.
Environ Monit Assess ; 196(3): 286, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38376652

RESUMO

In order to safeguard and restore ecological security in ecologically fragile regions, a regionally appropriate land use structure and ecological security pattern should be constructed. Previous ecological security research models for ecologically fragile areas are relatively homogenous, and it is necessary to establish a multi-modeling framework to consider integrated ecological issues. This study proposes a coupled "PLUS-ESI-Circuit Theory" framework for multi-scenario ecological security assessment of the Ningxia Hui Autonomous Region (NHAR). Firstly, the PLUS model was used to complete the simulation of four future development scenarios. Secondly, a new ecological security index (ESI) is constructed by synthesizing ecological service function, ecological health, and ecological risk. Finally, the Circuit Theory is applied to construct the ecological security pattern under multiple scenarios, and the optimization strategy of ecological security zoning is proposed. The results show that (1) from 2000 to 2030, the NHAR has about 80% of grassland and farmland. The built-up area is consistently growing. (2) Between 2000 and 2030, high ecological security areas are primarily located in Helan Mountain, Liupan Mountain, and the central part of NHAR, while the low ecological security areas are dominated by Shapotou District and Yinchuan City. (3) After 2010, the aggregation of high-security areas decreases, and the fragmentation of patches is obvious. Landscape fragmentation would increase under the economic development (ED) scenario and would be somewhat ameliorated by the ecological protection (EP) and balanced development (BD) scenarios. (4) The number of sources increases but the area decreases from 2000 to 2020. The quantity of ecological elements is on the rise. Ecological restoration and protection of this part of the country will improve its ecological security.


Assuntos
Planejamento de Cidades , Monitoramento Ambiental , Simulação por Computador , Desenvolvimento Econômico , Fazendas
17.
J Immunother Cancer ; 12(1)2024 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-38290767

RESUMO

BACKGROUND AND AIMS: Dual programmed death 1 (PD-1) and angiogenesis blockade therapy is a frontline treatment for hepatocellular carcinoma (HCC). An accepted model for survival prediction and risk stratification in individual patients receiving this treatment is lacking. Aimed to develop a simple prognostic model specific to these patients. APPROACH AND RESULTS: Patients with unresectable HCC undergoing dual PD-1 and angiogenesis blockade therapy were included in training cohort (n=168) and validation cohort (n=72). We investigated the prognostic value of clinical variables on overall survival using a Cox model in the training set. A prognostic score model was then developed and validated. Predictive performance and discrimination were also evaluated. Largest tumor size and Alpha-fetoprotein concentration at baseline and Neutrophil count and Spleen volume change after 6 weeks of treatment were identified as independent predictors of overall survival in multivariable analysis and used to develop LANS score. Time-dependent receiver operating characteristic analysis, calibration curves, and C-index showed LANS score had favorable performance in survival prediction. Patients were divided into three risk categories based on LANS score. Median survival for patients with low, intermediate, and high LANS scores was 31.7, 23.5, and 11.5 months, respectively (p<0.0001). The disease control rates were 96.4%, 64.3%, and 32.1%, respectively (p<0.0001). The predictive performance and risk stratification ability of the LANS score were confirmed in validation and entire cohorts. CONCLUSION: The LANS score model can provide individualized survival prediction and risk stratification in patients with unresectable HCC undergoing dual PD-1 and angiogenesis blockade therapy.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/patologia , Prognóstico , Neoplasias Hepáticas/patologia , Receptor de Morte Celular Programada 1 , Angiogênese
18.
Sci Rep ; 14(1): 475, 2024 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-38177655

RESUMO

In recent years, biometrics has been the most popular style of personal identification. The finger vein is an intrinsic and stable trait, and with the ability to detect liveness, it receives academic and industry attention. However, convolution neural networks (CNNs) based finger vein recognition generally can only cover a small input region by using small kernels. Hence, the performance is poor, facing low-quality finger vein images. It is a challenge to effectively use the critical feature of multi-scale for finger veins. In this article, we extract multi-scale features via pyramid convolution. We propose scale attention, namely, the scale-aware attention (SA) module, which enables dynamic adjustment of the weight of each scale to information aggregation. Utilize the complementation of different scale detail features to enhance the discriminativeness of extracted features, thus improving the finger vein recognition performance. In order to verify the present method's efficiency, we carried out experiments on two public data sets and one internal data, and the wide range of experimental results proves the proposed method's effectiveness.


Assuntos
Conscientização , Indústrias , Biometria , Extremidades , Atenção
19.
Small ; 20(2): e2305464, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37658520

RESUMO

The utilization of layered oxides as cathode materials has significantly contributed to the advancement of the lithium-ion batteries (LIBs) with high energy density and reliability. However, the structural and interfacial instability triggered by side reactions when charged to high voltage has plagued their practical applications. Here, this work reports a novel multifunctional additive, id est, 7-Anilino-3-diethylamino-6-methyl fluoran (ADMF), which exhibits unique characteristics such as preferential adsorption, oxygen scavenging, and electropolymerization protection for high-voltage cathodes. The ADMF demonstrates the capability to ameliorate the growth of cathode-electrolyte interphase (CEI), effectively diminishing the dissolution of transition metal (TM) ions, reducing the interface impedance, and facilitating the Li+ transport. As a result, ADMF additive with side reaction-blocking ability significantly enhances the cycling stability of MCMB||NCM811 full-cells at 4.4 V and MCMB||LCO full-cells at 4.55 V, as evidenced by the 80% retention over 600 cycles and 87% retention after 750 cycles, respectively. These findings highlight the potential of the additive design strategy to modulate the CEI chemistry, representing a new paradigm with profound implications for the development of next-generation high-voltage LIBs.

20.
Int J Biol Macromol ; 254(Pt 3): 127962, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37952331

RESUMO

Multilayer structural nanoparticles (MSNPs) fabricated by layer-by-layer self-assembly were used for the co-encapsulation of resveratrol (Res) and vitamin D3 (Vd). Res and Vd co-encapsulated MSNPs (Res-Vd-MSNPs) were evaluated by appearance, morphology, particle size, ζ potential and encapsulation efficiency (EE). The results showed that Res-Vd-MSNPs were spherical in shape with a particle size of 625.4 nm and a surface charge of +26.1 mV. The EE of Res and Vd was as high as 93.6 % and 90.8 %, respectively. Res-Vd-MSNPs exhibited better stability and lower degradation rate in simulated gastric fluid, allowing the programmed sequential release of Vd and Res in simulated intestinal fluid and simulated colonic fluid, which was also confirmed by in vivo fluorescence imaging of mice. In addition, Res-Vd-MSNPs effectively alleviated the clinical symptoms of dextran sulfate sodium salt (DSS)-induced colitis in mice, including weight loss, diarrhea and fecal bleeding, and it especially exerted a preventive effect on DSS-induced colon tissue damage and colon shortening. Furthermore, Res-Vd-MSNPs suppressed the expression of anti-inflammatory cytokines such as TNF-α, IL-1ß and IL-6 and ameliorated DSS-induced oxidative damage, decreased colonic myeloperoxidase (MPO) and nitric oxide (NO) activities and elevated glutathione (GSH) level in DSS-treated mice. This study illustrated that MSNPs were potential carriers for developing the co-delivery system for the synergistic prevention and treatment of ulcerative colitis.


Assuntos
Colite Ulcerativa , Colite , Nanopartículas , Animais , Camundongos , Resveratrol/metabolismo , Dextranos/farmacologia , Colite/induzido quimicamente , Colite/tratamento farmacológico , Colite/metabolismo , Colite Ulcerativa/tratamento farmacológico , Glutationa/metabolismo , Sulfato de Dextrana/efeitos adversos , Colo , Camundongos Endogâmicos C57BL , Modelos Animais de Doenças
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