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Wide Facets ZnCo2O4 Nanosheets for High Electrochemical Supercapacitor Performances 高电化学超级电容器性能的宽面ZnCo2O4纳米片
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4529
Yuan Yuan, Lei Fang, Mingqing Gu, Zhaoxu Lv, Changrong Lv, Nabi Ullah, Ahmad Umar, Shahid Hussain
ZnCo 2 O 4 nanosheets show excellent supercapacitive performance due to their well-developed and uniform architecture. The unique nanosheets with wide facets deliver outstanding electrochemical supercapacitor performance. As a result, the catalyst exhibits a specific capacitance of 700 F/g at a current density of 1 A/g. Interestingly, the material also shows outstanding cycling stability and loses only 2.75% even after 5000 cycles. The study confirms that ZnCo 2 O 4 based materials can be applied in high-energy as well as high-power density applications (energy storage, electric vehicles, and flexible electronic devices) due to their excellent morphology, wide facets, outstanding stability, and capacitance.
zno纳米片结构均匀、结构完善,具有优异的超级电容性能。独特的宽面纳米片提供了出色的电化学超级电容器性能。结果表明,该催化剂在电流密度为1 a /g时的比电容为700 F/g。有趣的是,该材料还表现出出色的循环稳定性,即使在5000次循环后也只损失2.75%。该研究证实,znco2o4基材料由于其优异的形貌、宽切面、出色的稳定性和电容,可以应用于高能量和高功率密度的应用(储能、电动汽车和柔性电子设备)。
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引用次数: 0
Effects of Ursolic Acid in Extracts of Prunella vulgaris on the Proliferation of Thyroid Papillary Carcinoma Cells Under the p53MAPK Signaling Pathway 夏枯草提取物熊果酸对p53MAPK信号通路下甲状腺乳头状癌细胞增殖的影响
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4520
Chao Hu, Qi Zhang, Dongxian Liu, Chao Li, Ming Li
The aim of this research was to demonstrate the impact of ursolic acid (UA) in Prunella vulgaris extracts on the proliferation of papillary thyroid carcinoma (PTC) cells through the p53MAPK signaling. Effects of Prunella vulgaris extracts on TPC-1 cell proliferation were analyzed by intervening with various concentrations of UA, including negative control (NC) group, solvent control (SC) group, 3 μ M UA group, 6 μ M UA group, 12 μ M UA group, and 15 μ M UA group. Flow cytometry was adopted to evaluate apoptosis in TPC-1 cells, while real-time fluorescent quantitative (RT-q) PCR was implemented to assess expression (EP) of Bax and Bcl-2 in TPC-1 cells following UA intervention. RT-qPCR and Western blotting were employed to examine the differential EP levels of cell apoptosis, Bax, and Bcl-2 proteins. RT-qPCR was utilized to investigate the influence of UA on EP of various genes in MAPK pathway. The ethyl acetate extract exhibited the most notable inhibitory effect on TPC-1 cells. The content of UA in Prunella vulgaris increased gradually with the extension of ultrasonic time. The growth curve of TPC-1 cells demonstrated an initial increase followed by a decrease with increasing time. As the concentration increased, cell proportion in S phase increased, while the proportions in the GO-G1 and G2-M phases decreased, indicating that UA concentration-dependently arrested cells in the S phase. The level of Bax mRNA exhibited an increasing trend with increasing concentration, and the 12 μ M UA and 15 μ M UA groups demonstrated remarkable differences versus NC group ( P <0.01). Bcl-2 protein demonstrated a decreasing trend with increasing concentration, and the 6 μ M UA, 12 μ M UA, and 15 μ M UA groups exhibited considerable differences relative to NC group ( P < 0.05). Additionally, pro-apoptotic protein Bax increased, while that of anti-apoptotic protein Bcl-2 decreased. UA treatment upregulated EP of the p53 gene in the MAPK pathway. Genes such as ERK, MEK, TSHR, Ras, p53, BRAF, PAK4, and PAKCa were downregulated. In summary, UA can upregulate EP of the p53 gene in the MAPK pathway, greatly inhibit proliferation of TPC-1 cells in PTC, and promote apoptosis. These findings provide insights for therapy of thyroid cancer.
本研究的目的是通过p53MAPK信号通路证明夏枯草提取物中熊果酸(UA)对甲状腺乳头状癌(PTC)细胞增殖的影响。通过不同浓度的UA干预,包括阴性对照(NC)组、溶剂对照(SC)组、3 μ M UA组、6 μ M UA组、12 μ M UA组和15 μ M UA组,分析夏枯草提取物对TPC-1细胞增殖的影响。采用流式细胞术检测TPC-1细胞凋亡情况,实时荧光定量PCR检测UA干预后TPC-1细胞中Bax和Bcl-2的表达情况。采用RT-qPCR和Western blotting检测EP对细胞凋亡、Bax和Bcl-2蛋白的影响。采用RT-qPCR方法研究UA对MAPK通路中各基因EP的影响。乙酸乙酯提取物对TPC-1细胞的抑制作用最显著。随着超声时间的延长,夏枯草中UA的含量逐渐升高。随着时间的增加,TPC-1细胞的生长曲线呈现先升高后降低的趋势。随着浓度的增加,处于S期的细胞比例增加,而处于GO-G1期和G2-M期的细胞比例减少,表明UA浓度依赖性阻滞细胞处于S期。Bax mRNA水平随浓度的增加呈升高趋势,12 μ M UA组和15 μ M UA组与NC组相比差异显著(P <0.01)。Bcl-2蛋白随浓度的增加呈下降趋势,6 μ M UA、12 μ M UA和15 μ M UA组与NC组相比差异显著(P <0.05)。促凋亡蛋白Bax升高,抗凋亡蛋白Bcl-2降低。UA治疗上调了MAPK通路中p53基因的EP。ERK、MEK、TSHR、Ras、p53、BRAF、PAK4、PAKCa等基因下调。综上所述,UA可以上调MAPK通路中p53基因的EP,显著抑制PTC中TPC-1细胞的增殖,促进细胞凋亡。这些发现为甲状腺癌的治疗提供了新的思路。
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引用次数: 0
Construction of a New Prognostic Model for Oral Squamous Cell Carcinoma Based on Telomere-Related Genes 基于端粒相关基因的口腔鳞状细胞癌新预后模型的构建
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4532
Lin Liu, Jia Liu, Keyi Wang, Yuchi Zhu
We investigated the prognostic value of telomere-related genes in oral squamous cell carcinoma (OSCC) using the TCGA-OSCC dataset and GSE41613 external validation set. We identified differentially expressed genes (DEGs) between OSCC and control samples and intersected them with telomere-related genes. Three risk model genes (IGF2BP2, EIF5A2, and PLOD2) were obtained through Cox and LASSO analyses. A risk model was constructed based on the expression of these genes. The OSCC samples were divided into high and low-risk groups using the median risk score. Univariate and multivariate Cox analyses identified risk score and age as independent prognostic factors. Gene set enrichment analysis revealed enrichment in chemical stimulus and appendage development pathways. We constructed a transcription factor (TF)-mRNA network involving two mRNAs (EIF5A2, PLOD2) and 17 TFs, including STAT1-EIF5A2 and TEAD1-EIF5A2. Immune-infiltration analysis showed significant differences in the abundance of 11 immune cells between the high and low-risk groups, including T cells CD8, activated mast cells, and macrophages M0. Our findings contribute to the development of a telomere-related risk model (including IGF2BP2, EIF5A2, and PLOD2) for predicting the prognosis of OSCC, providing new insights for further studies in this area.
我们使用TCGA-OSCC数据集和GSE41613外部验证集研究了端粒相关基因在口腔鳞状细胞癌(OSCC)中的预后价值。我们鉴定了OSCC和对照样本之间的差异表达基因(DEGs),并将它们与端粒相关基因相交。通过Cox和LASSO分析获得3个风险模型基因(IGF2BP2、EIF5A2和PLOD2)。基于这些基因的表达构建了风险模型。使用中位风险评分将OSCC样本分为高风险组和低风险组。单因素和多因素Cox分析确定风险评分和年龄是独立的预后因素。基因集富集分析显示在化学刺激和附属物发育途径中富集。我们构建了一个转录因子(TF)-mRNA网络,涉及两个mrna (EIF5A2, PLOD2)和17个TF,包括STAT1-EIF5A2和TEAD1-EIF5A2。免疫浸润分析显示,高危组和低危组之间11种免疫细胞的丰度存在显著差异,包括T细胞CD8、活化肥大细胞和巨噬细胞M0。我们的研究结果有助于建立端粒相关风险模型(包括IGF2BP2、EIF5A2和PLOD2)来预测OSCC的预后,为该领域的进一步研究提供新的见解。
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引用次数: 0
Thermal Aged Parameters Characteristics of Cables Crosslinked Polyethylene and Accessories Silicone Rubber Materials 电缆交联聚乙烯及附件硅橡胶材料的热老化参数特性
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4528
Ran Hu, Hongliang Guo, Bing Li, Zhifeng Xu, Weichao Zhang
The cable is subjected to a variety of influences such as electricity and heat, which may cause damage to the dielectric strength and cause irreversible effects. In this paper, the thermal aging performance of 135 °C and 175 °C was studied by studying the cross-linked polyethylene, carbon black shield, conductive silicone rubber and insulating silicone rubber in the cable body and joint, and the brittle section of the material was observed by scanning electron microscopy. Infrared spectroscopy was used to analyze the absorption peak of the observation material; The crystallization properties of materials were observed by differential scanning calorimetry. Alternating Current breakdown test, broadband dielectric spectrum test and volume resistivity test were used to observe the electrical properties of the material; Tensile experiments were used to observe the mechanical physics of materials.
电缆受到电、热等多种影响,可能对其介电强度造成破坏,并产生不可逆效应。本文通过对电缆本体和接头中交联聚乙烯、炭黑屏蔽、导电硅橡胶和绝缘硅橡胶的研究,研究了135℃和175℃的热老化性能,并通过扫描电镜观察了材料的脆性切片。采用红外光谱法对观测材料的吸收峰进行分析;用差示扫描量热法观察了材料的结晶性能。采用交流击穿试验、宽带介电谱试验和体积电阻率试验观察材料的电学性能;通过拉伸实验观察材料的力学物理特性。
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引用次数: 0
Preparation and Properties of Negative Thermal Expansion Snow Melting and Ice Suppression Materials 负热膨胀融冰抑冰材料的制备及性能研究
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4564
Xiaodong Wang, Chunyan Yu, Wei Ni, Haolong Su, Jiahao Tan
To investigate the potential utilization of materials exhibiting negative thermal expansion in snow melting and ice suppression applications, an orthogonal test was conducted to ascertain the optimal ratio of effective constituents in said materials. The thermal expansion coefficient of the porous carrier for negative thermal expansion materials was examined, and modifications were made to the material used for snow melting and ice suppression. In conclusion, the researchers successfully developed snow melting and ice suppression materials with low thermal expansion that met the desired performance criteria. Furthermore, they conducted an analysis of the precipitation rate, as well as the snow melting and ice suppression effectiveness of these materials across various temperature ranges. According to the results, the thermal expansion coefficient of the carrier Z1 is positive and varies slightly in the temperature range of −30 °C~−10 °C. In the temperature range of −10 °C~0 °C, the thermal expansion coefficient is negative, and it has negative thermal expansion characteristics. At 0 °C~60 °C, its thermal expansion coefficient first increases and then decreases. In the low temperature stage, the amount of salt precipitation decreases with the decrease of temperature. In the conductivity test, the conductivity at 0 °C is greater than that at −5 °C, and much greater than that at 10 °C, the presence of a negative thermal expansion coefficient has been observed to exert a specific influence on the precipitation of materials used for snow melting and ice suppression. In addition, with the increase of temperature, the amount of salt precipitation increases. Whereas, when the temperature is higher than 35 °C, due to the thermal expansion characteristics of the carrier, the expansion of the volume of snow melting and ice suppression materials is comparatively limited, which results in a not greatly increased precipitation rate of the snow melting and ice suppression components compared with that at 35 °C.
为了研究负热膨胀材料在融雪和抑冰应用中的潜在利用潜力,进行了正交试验,以确定上述材料中有效成分的最佳比例。考察了负热膨胀材料多孔载体的热膨胀系数,并对用于融冰抑冰的材料进行了改进。总之,研究人员成功地开发了具有低热膨胀的融雪和抑冰材料,满足了期望的性能标准。此外,他们还分析了这些材料在不同温度范围内的降水率、融雪和抑冰效果。结果表明,载流子Z1的热膨胀系数为正,在−30℃~−10℃温度范围内变化不大。在−10℃~0℃温度范围内,热膨胀系数为负,具有负热膨胀特性。在0℃~60℃时,其热膨胀系数先增大后减小。在低温阶段,盐的析出量随着温度的降低而减少。在电导率试验中,0℃时的电导率大于- 5℃时的电导率,且远大于10℃时的电导率,观察到负热膨胀系数的存在对融冰抑冰材料的析出有特定的影响。此外,随着温度的升高,盐的析出量增加。而当温度高于35℃时,由于载体的热膨胀特性,融冰抑冰材料体积的膨胀相对有限,导致融冰抑冰构件的降水率与35℃时相比没有明显增加。
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引用次数: 0
Biomass Activated Carbon: The Electrode Material to Promote the Large-Scale Production of Supercapacitors 生物质活性炭:促进超级电容器规模化生产的电极材料
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4554
Bin Xie, Jun-Jie He, Lei Zhao, Yu-Chen Sun, Sen-Lin Li, Jing Li
Supercapacitors have emerged as one of the devices most likely to facilitate major breakthroughs in energy storage technology. With the advantages of wide source of raw materials, good electrical conductivity and easy preparation, biomass activated carbon has become the most promising materials to promote for application of supercapacitors. Biomass activated carbon still has problems such as low energy density and unenvironmentally preparation process. This work summarizes the relevant research about the manufacture of biomass activated carbon for supercapacitors in recent years, including the consistency between theoretical performance and experimental data, and the correlation between preparation technology and basic characteristics. Furthermore, the specific range of basic characteristics for high-performance biomass activated carbon was pointed out, which were pore size distribution, conductivity, specific surface area and surface heteroatom doping. The most suitable manufacturing process for high performance biomass activated carbon was demonstrated. This significance was important for promoting the large-scale production of biomass activated carbon for Supercapacitors.
超级电容器已经成为最有可能推动能源存储技术取得重大突破的设备之一。生物质活性炭具有原料来源广、导电性好、制备简单等优点,已成为超级电容器应用中最有推广前途的材料。生物质活性炭目前还存在能量密度低、制备工艺不环保等问题。综述了近年来制备超级电容器用生物质活性炭的相关研究,包括理论性能与实验数据的一致性、制备工艺与基本特性的相关性等。此外,指出了高性能生物质活性炭的基本特性的具体范围,即孔径分布、电导率、比表面积和表面杂原子掺杂。研究了高性能生物质活性炭的最佳生产工艺。这对推进超级电容器用生物质活性炭的规模化生产具有重要意义。
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引用次数: 1
Cytotoxic Potential of Clarithromycin-Loaded Pumpkin Seed Oil-Based Nanoemulsion on Human Breast, Hepatic and Colorectal Cancer Cells 克拉霉素负载南瓜籽油纳米乳对人乳腺癌、肝癌和结直肠癌细胞的细胞毒性潜力
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4523
Hadil Faris Alotaibi, El-Sayed Khafagy, Mohammad Y. Alfaifi, Jawaher Abdullah Alamoudi, Samar Zuhair Alshawwa, Rana Saeed Alqahtani, Sarah Salem Alamrani, Amr Selim Abu Lila
Medication repurposing is one of the effective strategies in approving drugs for new therapeutic indications. Clarithromycin is a well-known macrolide antibiotic that is commonly used for the treatment of a wide variety of bacterial infections. However, extensive preclinical and clinical studies have recently revealed the efficacy of clarithromycin in treating various tumors in combination with conventional therapy. In this study, we formulated a clarithromycin nanoemulsion using pumpkin seed oil as a natural nano-carrier to study the possible cytotoxic effects against colorectal (HCT 116), breast (MCF-7), and liver cancer (HepG2) in vitro . The formulated nanoemulsion was characterized for droplet size distribution, surface charge, drug loading and in vitro drug release. The droplet size of clarithromycin nanoemulsion was 360.6±42.5 nm and zeta potential was −31.6± 2.8 mV. Incorporating the lipophilic drug, clarithromycin, within nanoemulsion significantly heightened in vitro drug release, compared to plain drug. The anticancer properties of the nanoemulsion formulation were examined using sulforhodamine B (SRB) assay as well as cell cycle and apoptosis analyses. Clarithromycin-loaded pumpkin seed oil-based nanoemulsion remarkably diminished the viability of all tested cell lines, compared to either plain clarithromycin or plank pumpkin seed oil nanoemulsion. In addition, incorporating clarithromycin within pumpkin seed oil-based nanoemulsion synergistically augmented the cytotoxic efficacy of clarithromycin against various cancer cell lines via advocating considerable cell cycle arrest with subsequent elicitation of potent apoptotic response. These results support the potential use of clarithromycin in cancer therapy, and merit future translational research.
药物再利用是批准新适应症药物的有效策略之一。克拉霉素是一种众所周知的大环内酯类抗生素,通常用于治疗各种细菌感染。然而,广泛的临床前和临床研究最近揭示了克拉霉素与常规治疗联合治疗多种肿瘤的疗效。本研究以南瓜籽油为天然纳米载体制备克拉霉素纳米乳,在体外研究克拉霉素对结直肠癌(HCT 116)、乳腺癌(MCF-7)和肝癌(HepG2)可能的细胞毒作用。对制备的纳米乳进行了粒径分布、表面电荷、载药量和体外释药等表征。制备的克拉霉素纳米乳粒径为360.6±42.5 nm, zeta电位为−31.6±2.8 mV。与普通药物相比,在纳米乳中加入亲脂性药物克拉霉素可显著提高体外药物释放。采用硫代丹胺B (SRB)实验以及细胞周期和细胞凋亡分析来检测纳米乳制剂的抗癌特性。与普通克拉霉素或平板南瓜籽油纳米乳液相比,含有克拉霉素的南瓜籽油纳米乳液显著降低了所有被测试细胞系的活力。此外,在南瓜籽油纳米乳中加入克拉霉素,通过促进相当大的细胞周期阻滞,随后引发有效的凋亡反应,协同增强了克拉霉素对各种癌细胞系的细胞毒功效。这些结果支持克拉霉素在癌症治疗中的潜在应用,并值得未来的转化研究。
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引用次数: 0
Synthesis of Metal–Organic Frameworks for the Adsorption of Congo Red from Wastewater 金属-有机骨架对废水中刚果红的吸附研究
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4563
Qinhui Ren, Peng Chen, Yaqi Yang, Fuhua Wei, Hongliang Chen, Siyuan Wang, Zhao Liang
In this paper, metal–organic frameworks (MOFs) are applied to get rid of Congo red from effluent in an inexpensive and effective manner. Co-containing MOFs (Co-MOF) were prepared via solvothermal treatment, and their structures were tested by performing SEM, TG, and XRD. The MOFs were studied for the removal of CR from wastewater, and the kinetics of the adsorption process were investigated. The results indicated that the pseudo second-order kinetic model properly describes the removal of CR and the maximum adsorption capacity within 5 h is 355.2 mg/g for Co-MOF. The adsorption capacity of the MOFs was evaluated under different pH conditions. This work highlights the broad application prospect of MOFs in sewage disposal.
本文采用金属有机骨架(mof)技术,以一种经济有效的方法去除废水中的刚果红。采用溶剂热处理法制备了含Co-MOF,并用SEM、TG和XRD对其结构进行了表征。研究了mof对废水中CR的去除效果,并对其吸附动力学进行了研究。结果表明,拟二级动力学模型能较好地描述CR的去除,Co-MOF在5 h内的最大吸附量为355.2 mg/g。考察了不同pH条件下mof的吸附能力。这项工作凸显了mof在污水处理中的广阔应用前景。
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引用次数: 1
Preparation and Performance of Building Fire Protection and Insulation Materials 建筑防火保温材料的制备与性能
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4527
Jian Qin, Jie Zeng, Yuetong Ning, Shenglin Wen, Wen Zeng
In this paper, a series of calcium silicate thermal insulation materials were prepared by hydrothermal method, and their structure, mechanical properties and thermal insulation properties were systematically studied by adjusting their preparation process, aiming to develop a new type of calcium silicate thermal insulation material with excellent performance. We found that the product gradually changed from a dense flocculent substance on the surface to a loose needle rod substance, and the grain grew, and the crystallinity increased with the increase of synthesis temperature. As the initial calcium silicon ratio increases, the surface pores of the product increase, and the surface gradually becomes loose from dense, resulting in the appearance of tobermorite and xonotlite phases.
本文采用水热法制备了一系列硅酸钙保温材料,并通过调整其制备工艺,对其结构、力学性能和保温性能进行了系统研究,旨在研制出性能优异的新型硅酸钙保温材料。我们发现产物从表面致密的絮状物质逐渐变为松散的针状物质,晶粒逐渐长大,结晶度随着合成温度的升高而增大。随着初始钙硅比的增大,产物表面孔隙增大,表面由致密逐渐变疏松,从而出现钙硅石相和硅钙石相。
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引用次数: 0
Mechanisms of Linggui Zhugan Decoction in the Treatment of Obesity Based on Network Pharmacology 基于网络药理学的灵归减肝汤治疗肥胖的作用机制研究
4区 材料科学 Pub Date : 2023-09-01 DOI: 10.1166/sam.2023.4514
Chunmei Liu, Li Zhang, Yubin Yang
This study employed network pharmacology to investigate how Linggui Zhugan Decoction (LGZGD) may treat obesity. The TCMSP platform was used to select active ingredients and targets of LGZGD based on drug ADME properties, forming a component-target network. Obesity-related targets were identified from various databases, and a global network was constructed to analyze interactions between components, targets, and disease-related proteins. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were conducted using G: profiler. Molecular docking using AutoDockTools validated the binding of key active components to core targets. The study identified 120 active ingredients and 201 targets for LGZGD, with 84 targets related to obesity. GO analysis revealed various biological processes, cellular components, and molecular functions associated with obesity, including lipid response and cellular response to chemical stimuli. KEGG pathway analysis highlighted signaling pathways such as AGE-RAGE signaling in diabetic complications, cancer pathways, IL-17 signaling, and neuroactive ligand-receptor interaction signaling. Molecular docking confirmed that the core active components of LGZGD tightly bind to key targets involved in obesity treatment. This study provides a preliminary understanding of the pharmacological basis and efficacy mechanism of LGZGD in treating obesity, supporting its traditional use and offering a theoretical foundation for further research.
本研究采用网络药理学方法研究灵归减肝汤对肥胖的治疗作用。利用TCMSP平台根据药物ADME性质选择LGZGD的有效成分和靶点,形成成分-靶点网络。从不同的数据库中确定了肥胖相关的靶点,并构建了一个全球网络来分析成分、靶点和疾病相关蛋白之间的相互作用。使用G: profiler进行基因本体(GO)和京都基因与基因组百科全书(KEGG)途径富集分析。利用AutoDockTools进行分子对接,验证了关键活性成分与核心靶点的结合。该研究确定了LGZGD的120种有效成分和201个靶点,其中84个靶点与肥胖有关。氧化石墨烯分析揭示了与肥胖相关的各种生物过程、细胞成分和分子功能,包括脂质反应和细胞对化学刺激的反应。KEGG通路分析强调了糖尿病并发症中的AGE-RAGE信号通路、癌症通路、IL-17信号通路和神经活性配体-受体相互作用信号通路。分子对接证实,LGZGD的核心活性成分与肥胖治疗中涉及的关键靶点紧密结合。本研究初步了解了LGZGD治疗肥胖的药理基础和作用机制,为其传统应用提供了支持,并为进一步研究提供了理论基础。
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引用次数: 0
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