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Rhizospheric fungus Aspergillus terreus mitigates lead (Pb) toxicity in red bean (Phaseolus vulgaris L.) by modulating growth, photosynthetic pigments, and biochemical stress markers. 根际真菌土曲霉(Aspergillus terreus)通过调节红豆生长、光合色素和生化胁迫标志物来减轻铅(Pb)对红豆的毒性。
IF 5.8 3区 环境科学与生态学 0 ENVIRONMENTAL SCIENCES Pub Date : 2026-10-26 DOI: 10.1007/s11356-026-38331-5
Aqsa Jani, Naveen Dilawar, Attaur Rahman, Hira Bashir, Kiran Wazir, Huma Wahab, Rahid Khan, Shakir Ullah

The lead (Pb) contamination is a serious risk to the agricultural productiveness and food security by affecting the metabolism of plants, halting photosynthesis, and causing oxidative stress. This research examined how the rhizospheric fungus Aspergillus terreus (isolate F2) could minimize the adverse effects of Pb phytotoxicity on the growth and physiology of red bean (Phaseolus vulgaris L.) under greenhouse conditions. The plants were cultivated in soil with 25 and 75 ppm of lead acetate and inoculated with a suspension of A. terreus spores in a completely randomized block trial (three replicas). Lead stress caused significant retardation of plant growth, with reductions of up to 43% in shoot length and up to 37% in dry weight at the higher Pb concentration (75 ppm), while root length and fresh weight declined by up to 24% and 34%, respectively. The photosynthetic pigments-chlorophyll a, chlorophyll b, carotenoids, and xanthophylls-declined by approximately 24-58% under Pb stress, with the greatest reductions observed for chlorophyll b and carotenoids at 75 ppm Pb. Increase in secondary metabolites (flavonoids and phenolics) was a form of stress response, and soluble sugars became considerably reduced. Lipid and proline levels were high in the Pb stress, proving oxidative damage and osmoregulatory processes. Inoculation of A. terreus considerably reverted these effects, and growth parameters, pigment levels, and metabolic balance were returned. Lactophenol cotton blue staining and light microscopy were used to confirm that the root sections were colonized by fungi. The isolate was molecularly determined through ITS rDNA sequencing and phylogenetic analysis using MEGA-11. Multivariate techniques [principal component analysis (PCA), hierarchical clustering, Pearson correlation, and treatment profile radar charting] verified the total treatment group separation of all 15 measured variables with PC1 and PC2 explaining 73.3% of total variance; chlorophyll a, fresh weight, and soluble sugars were the best distinguishing variables. These results reveal that A. terreus is an ideal bioinoculant in the reduction of Pb phytotoxicity and a viable and environmentally friendly approach to bioremediation of heavy metal-contaminated farm soils. These results indicate that A. terreus is an effective bioinoculant for alleviating Pb-induced physiological and biochemical stress in Phaseolus vulgaris L.; however, as Pb concentrations in plant tissue and soil were not measured, direct evidence of Pb immobilization or removal remains to be established in future studies.

铅(Pb)污染通过影响植物的代谢,使光合作用停止,引起氧化应激,对农业生产和粮食安全构成严重威胁。本研究考察了温室条件下根际真菌土曲霉(Aspergillus terreus,分离株F2)如何降低铅对红豆(Phaseolus vulgaris L.)生长和生理的不利影响。在一个完全随机的区域试验中,在25和75 ppm醋酸铅的土壤中种植植物,并用土孢孢子悬浮液接种(3个副本)。铅胁迫对植株生长有显著的抑制作用,在高铅浓度(75 ppm)下,茎长和干重分别减少43%和37%,根长和鲜重分别减少24%和34%。叶绿素a、叶绿素b、类胡萝卜素和叶黄素等光合色素在铅胁迫下下降了约24-58%,其中叶绿素b和类胡萝卜素在铅浓度为75 ppm时下降幅度最大。次生代谢物(类黄酮和酚类物质)的增加是应激反应的一种形式,可溶性糖显著减少。脂质和脯氨酸水平在铅胁迫下较高,证明了氧化损伤和渗透调节过程。接种黄芪可明显恢复这些效应,恢复生长参数、色素水平和代谢平衡。乳酚棉蓝染色和光镜检查证实根切片有真菌定植。通过ITS rDNA测序和MEGA-11系统发育分析对分离物进行分子鉴定。多变量技术[主成分分析(PCA)、分层聚类、Pearson相关和治疗剖面雷达图]验证了所有15个测量变量的总治疗组分离,PC1和PC2解释了总方差的73.3%;叶绿素a、鲜重和可溶性糖是最好的区分变量。这些结果表明,土刺草是一种理想的降低Pb植物毒性的生物接种剂,是一种可行的、环境友好的重金属污染农田土壤生物修复方法。上述结果表明,土刺蒿是缓解铅诱导的菜豆生理生化胁迫的有效生物接种剂;然而,由于没有测量植物组织和土壤中的铅浓度,因此在未来的研究中仍需建立铅固定或去除的直接证据。
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引用次数: 0
Severe environmental disturbances compromise ecological thresholds in aquatic environments. 严重的环境干扰损害了水生环境的生态阈值。
IF 3.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Pub Date : 2026-10-26 DOI: 10.1007/s10661-026-16090-7
Gisele Daiane Pinha, Beatrice Padovani Ferreira, Fabiana de Matos Costa, Fabio Cavalca Bom, KyssyanneSamihra Santos Oliveira, Maikon Di Domenico, Manuela Santos Santana, Nelson de Almeida Gouveia, Alessandra Delazari, Alex Cardoso Bastos, Daniel Rigo, Elisabeth Henschel, Eneida Maria Eskinazi-Sant'Anna, Fabian Sá, Gilberto Fonseca Barroso, Jorge Abdala Dergam, Leila de Lourdes Longo, Luiz Fernando Loureiro Fernandes, Mauricio Hostim-Silva, Renato David Ghisolfi, Renato Rodrigues Neto, Stéfano Zorzal-Almeida, Valéria da Silva Quaresma, Vânya Marcia Duarte Pasa, Nadson Ressyé Simões

Large-scale disturbances can profoundly alter aquatic ecosystems by modifying water chemistry, sediment dynamics, and biodiversity across connected freshwater and marine environments. The 2015 Fundão Dam collapse in Brazil provides an unprecedented context to evaluate how multiple aquatic communities respond to intense and prolonged contamination, revealing key mechanisms of community reorganization under chronic anthropogenic impacts. By a multi-taxa monitoring dataset collected from 62 freshwater and marine sites, we analyzed how different communities, comprising phytoplankton, zooplankton, macroinvertebrates, and fish, responded along a gradient of mining tailing exposure. Applying threshold indicator taxa analysis (TITAN), we identified critical environmental variables, capturing tipping points for positive and negative biotic responses to tailing-related environmental gradients. Our results showed that mining-related contaminants, combined with hydrogeochemical alterations triggered by the dam collapse, have driven long-term changes in biodiversity, reshaping ecosystem functioning. The same stressors that caused widespread negative responses in community structure also promoted localized increases in opportunistic, mainly planktonic taxa, indicating a multidirectional community reorganization. In general, small increases in metals and hydrogeochemical alterations (such as turbidity up to 17 NTU in riverine systems and 2 NTU in the marine sites), resulting from the dam collapse have driven persistent changes in biodiversity, ultimately reshaping ecosystem functioning. Integrating community-level thresholds should represent a critical approach to improve the detection of regime shifts and to support the development of habitat-specific recovery strategies for riverine and marine ecosystems affected by mining disturbances.

大规模的扰动可以通过改变水化学、沉积物动力学和淡水和海洋环境中的生物多样性来深刻地改变水生生态系统。2015年巴西fundo大坝坍塌为评估多种水生群落如何应对强烈和长期污染提供了前所未有的背景,揭示了慢性人为影响下群落重组的关键机制。通过从62个淡水和海洋站点收集的多分类群监测数据,我们分析了包括浮游植物、浮游动物、大型无脊椎动物和鱼类在内的不同群落如何沿着采矿尾矿暴露梯度响应。应用阈值指标分类群分析(TITAN),我们确定了关键的环境变量,捕获了生物对尾矿相关环境梯度的积极和消极反应的临界点。我们的研究结果表明,与采矿有关的污染物,加上大坝崩塌引发的水文地球化学变化,推动了生物多样性的长期变化,重塑了生态系统的功能。在群落结构中引起广泛负面反应的应激源也促进了以浮游为主的机会性类群的局部性增加,表明群落结构发生了多向重组。总体而言,大坝坍塌导致的金属和水文地球化学变化(如河流系统浊度高达17 NTU,海洋站点浊度高达2 NTU)的小幅增加推动了生物多样性的持续变化,最终重塑了生态系统功能。综合社区一级的阈值应该是一种关键的方法,以改进对制度变化的检测,并支持为受采矿干扰影响的河流和海洋生态系统制定特定生境的恢复战略。
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引用次数: 0
Pyrolysis mechanism of HTPB-containing ICM-107 composite: A DFTB molecular dynamics study. 含htpb的ICM-107复合材料热解机理:DFTB分子动力学研究。
IF 2.9 4区 化学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2026-10-26 DOI: 10.1007/s00894-026-07027-5
Chunyan Li, Jiake Fan, Jiao Chen

Context: We theoretically demonstrated the thermal decomposition mechanisms of the ICM-107 and ICM-107/HTPB systems over the temperature range of 1000-3250 K. The results confirmed that the introduction of HTPB promoted the initial decomposition of ICM-107 molecules at lower temperatures, owing to hydrogen radicals generated during HTPB decomposition, but extended the time required for complete decomposition. In the ICM-107 system, the initial decomposition mechanisms involved the coupling of two ICM-107 molecules to form larger clusters, intermolecular hydrogen transfer, and ring-opening reactions. Furthermore, Arrhenius fitting confirmed that HTPB incorporation reduced the activation energy for the initial decomposition of ICM-107 molecules from 202.99 to 170.61 kJ/mol.

Methods: With the help of CP2K package, the self-consistent charge density functional tight-binding (SCC-DFTB) method was employed to perform calculations. The Broyden-Fletcher-Goldfarb-Shanno (BFGS) method was selected to perform the cell and geometry optimization. To improve the accuracy in describing the van der Waals forces, the DFT-D3 method was adopted. Molecular dynamics (MD) simulations were performed in the NVT ensemble using the canonical sampling through velocity rescaling (CSVR) thermostat. Meanwhile, the post-processing analysis of molecular dynamics trajectories was performed using ReaxTools to establish the initial decomposition pathways of the ICM-107 and ICM-107/HTPB systems.

背景:我们从理论上论证了ICM-107和ICM-107/HTPB体系在1000-3250 K温度范围内的热分解机制。结果证实,HTPB的引入促进了ICM-107分子在较低温度下的初始分解,这是由于HTPB在分解过程中产生氢自由基,但延长了完全分解所需的时间。在ICM-107体系中,初始分解机制包括两个ICM-107分子耦合形成更大的团簇、分子间氢转移和开环反应。此外,Arrhenius拟合证实HTPB的掺入使ICM-107分子的初始分解活化能从202.99降低到170.61 kJ/mol。方法:借助CP2K封装,采用自洽电荷密度泛函紧密结合(SCC-DFTB)法进行计算。选择Broyden-Fletcher-Goldfarb-Shanno (BFGS)方法进行单元和几何优化。为了提高范德华力的描述精度,采用了DFT-D3方法。通过速度重标(CSVR)恒温器进行典型采样,在NVT系统中进行了分子动力学(MD)模拟。同时,利用ReaxTools对ICM-107和ICM-107/HTPB体系的初始分解路径进行后处理分析。
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引用次数: 0
Outdoor thermal comfort in K-12 schools: a systematic literature review. K-12学校室外热舒适:系统文献综述。
IF 3 3区 地球科学 Q2 BIOPHYSICS Pub Date : 2026-10-26 DOI: 10.1007/s00484-026-03354-7
Golbarg Sadeghian, Mahmoud Reza Saghafi

As children spend many hours outdoors for play, learning, and physical activity, the thermal quality of schoolyards has become an increasingly critical concern for public health and educational design, particularly under exposure to thermal extremes and climate change. This systematic review analyzes 35 peer-reviewed studies published between 2015 and 2025, identified through five online databases, to synthesize the current state of knowledge on outdoor thermal comfort (OTC) in K-12 schools. Findings show a strong focus on mitigating summer heat stress, particularly in primary schools within Mediterranean and humid subtropical climates. Most studies rely on field measurements combined with numerical simulations, typically using objective indices, while increasingly incorporating subjective measures such as behavioral adaptation. Across climates, vegetation and shading consistently emerge as the most effective mitigation strategies. By identifying research gaps, methodological trends, and dominant interventions, this review underscores the need for more comprehensive research on schoolyard thermal environments. It also provides practical guidance for architects, urban planners, and school administrators by outlining climate-responsive intervention priorities. Overall, this review highlights that improving outdoor thermal comfort in school settings is not merely an environmental design challenge but a cross-disciplinary issue at the intersection of public health, education, and climate adaptation. It calls for a shift from purely technical approaches toward integrated, participatory, and policy-oriented frameworks that position thermal comfort as a core component of school infrastructure.

随着孩子们花很多时间在户外玩耍、学习和体育活动,校园的热质量已经成为公共卫生和教育设计的一个日益重要的问题,特别是在极端高温和气候变化的情况下。本系统综述分析了2015年至2025年间发表的35项同行评议研究,通过五个在线数据库进行识别,以综合K-12学校户外热舒适(OTC)的现状。研究结果表明,减轻夏季热压力是重点,特别是在地中海和湿润亚热带气候的小学。大多数研究依赖于实地测量与数值模拟相结合,通常使用客观指标,同时越来越多地纳入主观测量,如行为适应。在各种气候条件下,植被和遮阳始终是最有效的缓解策略。通过确定研究差距、方法趋势和主要干预措施,本综述强调了对校园热环境进行更全面研究的必要性。它还通过概述应对气候变化的干预重点,为建筑师、城市规划者和学校管理者提供了实用指导。总的来说,这篇综述强调,改善学校环境中的室外热舒适不仅仅是一个环境设计挑战,而且是公共卫生、教育和气候适应交叉学科的问题。它要求从纯粹的技术方法转向综合的、参与性的和政策导向的框架,将热舒适定位为学校基础设施的核心组成部分。
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引用次数: 0
Integrated bulk and single-cell transcriptomics with virtual knockout analysis identifies FOS as an epithelial-associated candidate gene in chronic atrophic gastritis. 综合整体和单细胞转录组学与虚拟敲除分析确定FOS是慢性萎缩性胃炎的上皮相关候选基因。
IF 4 4区 生物学 Q1 GENETICS & HEREDITY Pub Date : 2026-10-26 DOI: 10.1007/s10142-026-02098-2
Shilong Li, Huiqiang Duan, Xin Liu, Meihua Shan, Zexuan Shen, Mingze Wu, Peiyao Wang, Qianze Yao, Weihua Fu

Chronic atrophic gastritis (CAG) is a precancerous lesion characterized by epithelial injury, glandular atrophy, and impaired gastric function. Molecular targets linking epithelial alterations with potential traditional Chinese medicine-derived compounds remain unclear. GEO bulk transcriptomic datasets were analyzed to identify differentially expressed genes (DEGs), which were intersected with CAG-related genes for enrichment analysis. Protein-protein interaction (PPI) network analysis and reverse network pharmacology were used to identify key targets and construct a drug-component-target network. Single-cell RNA sequencing, virtual knockout, molecular docking, CCK-8 assay, and RT-qPCR in 1‑Methyl‑3‑nitro‑1‑nitrosoguanidine (MNNG)-treated GES-1 cells were then integrated to prioritize and evaluate FOS. A total of 502 DEGs and 54 intersected CAG-related genes were identified, with enrichment in wound healing, epithelial junction organization, tight junctions, cAMP signaling, gastric cancer, and digestive or secretory pathways. Five key genes-APOA1, CFTR, FOS, HMOX1, and VIM-were identified, all with AUCs above 0.80. Among 21,679 single cells, FOS was the only key gene predominantly enriched in gastric epithelial cells. Virtual knockout predicted associations between FOS-network perturbation and five genes involved in hormone processing and gastric secretory pathways. Docking generated candidate fisetin-FOS and kaempferol-FOS poses for preliminary compound prioritization. MNNG reduced GES-1 cell viability and significantly increased FOS mRNA expression. Integrated computational analyses highlighted FOS as an epithelial-associated candidate gene in CAG and suggested exploratory associations with gastric secretory pathways. These findings support further functional and compound-intervention studies of the FOS/AP-1 axis.

慢性萎缩性胃炎(CAG)是一种以上皮损伤、腺体萎缩和胃功能受损为特征的癌前病变。将上皮改变与潜在的中药衍生化合物联系起来的分子靶点仍不清楚。分析GEO大量转录组数据集以鉴定差异表达基因(DEGs),并将其与cag相关基因相交进行富集分析。利用蛋白-蛋白相互作用(PPI)网络分析和反向网络药理学鉴定关键靶点,构建药物-组分-靶点网络。然后整合1‑甲基‑3‑硝基‑1‑亚硝基胍(MNNG)处理的gus -1细胞的单细胞RNA测序、虚拟敲除、分子对接、CCK-8测定和RT-qPCR,对FOS进行优先排序和评估。共鉴定出502个DEGs和54个交叉的cag相关基因,富集于伤口愈合、上皮连接组织、紧密连接、cAMP信号传导、胃癌和消化或分泌途径。鉴定出apoa1、CFTR、FOS、HMOX1和vim 5个关键基因,auc均在0.80以上。在21,679个单细胞中,FOS是唯一主要富集于胃上皮细胞的关键基因。虚拟敲除预测了fos网络扰动与参与激素加工和胃分泌途径的五个基因之间的关联。对接产生候选非司汀- fos和山奈酚- fos位姿,初步确定化合物优先级。MNNG降低GES-1细胞活力,显著提高FOS mRNA表达。综合计算分析强调FOS是CAG的上皮相关候选基因,并提示其与胃分泌途径存在探索性关联。这些发现为FOS/AP-1轴的进一步功能和复合干预研究提供了支持。
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引用次数: 0
Development and Characterization of VNARs Targeting Edwardsiella piscicida GAPDH. 靶向鱼氏爱德华菌GAPDH的vnas的开发与表征
IF 2.8 3区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2026-10-26 DOI: 10.1007/s10126-026-10721-3
Soichiro Yoshizawa, Mieko Kato, Yoshiro Hanyu, Keiichiro Koiwai, Ikuo Hirono, Hidehiro Kondo

Edwardsiella piscicida is an intracellular bacterial pathogen that causes edwardsiellosis in Japanese flounder and poses a serious threat to aquaculture. Surface-localized glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been implicated in bacterial adhesion and immune recognition, making it a promising antigenic target for infection control. In this study, we generated shark-derived variable domains of immunoglobulin novel antigen receptors (VNARs) targeting recombinant GAPDH from E. piscicida and evaluated their potential as antibody-based agents for controlling edwardsiellosis. A banded houndshark (Triakis scyllium) was immunized with recombinant GAPDH, and anti-GAPDH VNARs were subsequently isolated from the spleen using a combination screening method. Three VNAR clones, designated 2 - 1, 3 - 2, and 4-11, exhibited concentration-dependent binding to recombinant GAPDH and retained their binding activity after exposure to high temperatures or acidic conditions. Epitope binning indicated that the three clones recognized non-overlapping epitopes. Among the tested fish-pathogenic bacteria, clones 2 - 1 and 4-11 preferentially bound Edwardsiella species, including E. piscicida and E. anguillarum. In GAPDH activity assays, the combination of clones 2 - 1 and 4-11 showed the strongest inhibition of recombinant GAPDH activity, with an IC50 of 9.5 ng/ml. The same combination also most effectively inhibited E. piscicida growth in vitro, with an IC50 of 13.6 µg/ml. In a Japanese flounder challenge test, combined administration of clones 2 - 1 and 4-11 resulted in a final survival rate of 91.7%. These findings suggest that anti-GAPDH VNARs may provide a promising antibody-based strategy for the control of edwardsiellosis in aquaculture.

鱼腥味爱德华氏菌是引起牙鲆爱德华氏菌病的细胞内细菌病原体,对水产养殖业造成严重威胁。表面定位的甘油醛-3-磷酸脱氢酶(GAPDH)与细菌粘附和免疫识别有关,使其成为控制感染的有希望的抗原靶点。在这项研究中,我们产生了鲨鱼来源的免疫球蛋白新抗原受体(VNARs)的可变结构域,靶向piscicida重组GAPDH,并评估了它们作为基于抗体的药物控制爱德华氏菌病的潜力。用重组GAPDH免疫条带鲨(Triakis scyllium),随后采用联合筛选法从脾脏中分离出抗GAPDH的vnas。三个VNAR克隆,分别命名为2 -1、3 - 2和4-11,表现出与重组GAPDH的浓度依赖性结合,并在高温或酸性条件下保持其结合活性。表位比对表明,这3个克隆识别出了不重叠的表位。在检测的鱼致病菌中,克隆2 -1和克隆4-11优先结合爱德华氏菌,包括piscicida E.和anguillarum E.。在GAPDH活性测定中,克隆2 -1和克隆4-11组合对重组GAPDH活性的抑制作用最强,IC50为9.5 ng/ml。同样的组合也最有效地抑制了piscicida的体外生长,IC50为13.6µg/ml。在日本比目鱼攻毒试验中,2 -1和4-11克隆联合施用,最终成活率为91.7%。这些发现表明,抗gapdh vnas可能为水产养殖业控制爱德华氏菌病提供一种有希望的基于抗体的策略。
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引用次数: 0
Citizen science data as a tool for monitoring moss diversity in Poland: potential and limitations. 公民科学数据作为监测波兰苔藓多样性的工具:潜力和局限性。
IF 3.6 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Pub Date : 2026-10-26 DOI: 10.1007/s10661-026-16092-5
Mikołaj Latoszewski, Paweł Świsłowski, Małgorzata Rajfur, Grzegorz J Wolski

In this study, the potential and limitations of iNaturalist for monitoring mosses in Poland (2019-2025) were assessed using 17,451 verified "Research Grade" records. Rarefaction enabled diversity pattern analysis while accounting for sampling effort differences. Observational activity peaked in early-spring (March) and autumn (October). Analysis revealed extreme asymmetry in research effort (Gusers = 0.89): the 12 most active users contributed 65.5% of national records, creating a "super-user effect." Rarefaction corrected this bias, identifying the Pomeranian Voivodeship as having the highest standardized diversity (Srar = 80.9). Citizen science effectively supports specific moss monitoring aspects. Observers documented 151 unique records of the alien moss Campylopus introflexus, representing over 60% of sites recorded during 30 years of traditional floristic research. Despite the "microscope barrier" restricting the database largely to visually identifiable bryophytes (e.g., reducing nearly the entire genus Hypnum to H. cupressiforme; Gtaxa = 0.76), iNaturalist serves as a crucial early-warning system. Ultimately, large-scale citizen scientists datasets provide valuable guidance for identifying priority areas for future bryological research.

在本研究中,利用17451条经过验证的“研究级”记录,评估了iNaturalist在波兰监测苔藓(2019-2025)的潜力和局限性。在考虑采样努力差异的同时,稀疏使多样性模式分析成为可能。观测活动在早春(3月)和秋季(10月)达到高峰。分析显示,研究工作极不对称(Gusers = 0.89): 12个最活跃的用户贡献了全国记录的65.5%,形成了“超级用户效应”。Rarefaction纠正了这一偏见,确定波美拉尼亚省具有最高的标准化多样性(Srar = 80.9)。公民科学有效地支持特定的苔藓监测方面。观察员记录了151个外来苔藓弯曲弯曲的独特记录,占30年来传统植物区系研究记录地点的60%以上。尽管“显微镜屏障”将数据库限制在很大程度上仅限于视觉上可识别的苔藓植物(例如,将几乎整个Hypnum属减少到H. cupressiforme; Gtaxa = 0.76),但iNaturalist是一个至关重要的预警系统。最终,大规模的公民科学家数据集为确定未来苔藓学研究的优先领域提供了有价值的指导。
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引用次数: 0
Integrating network pharmacology, genetically informed multi-omics and granulosa-cell experiments identifies dauricine and oleanolic acid as candidate CASP3-modulating compounds of Zhi-Bai-Di-Huang-Wan in female pubertal timing. 结合网络药理学、遗传信息多组学和颗粒细胞实验,确定了水蛭碱和齐墩果酸是知百地黄丸在女性青春期调控casp3的候选化合物。
IF 4 4区 生物学 Q1 GENETICS & HEREDITY Pub Date : 2026-10-26 DOI: 10.1007/s10142-026-02096-4
Chung-Chih Liao, Shun-Fa Yang, Jung-Miao Li

Zhi-Bai-Di-Huang-Wan (ZBDHW) is a traditional Chinese medicine formula clinically used for precocious puberty, but its molecular basis remains unclear. Earlier age at menarche (AAM) reflects advanced female pubertal timing and provides a genetically tractable endpoint relevant to precocious puberty. This study aimed to identify ZBDHW-associated molecular targets relevant to pubertal timing by integrating target prediction, Mendelian randomization-based methylation-expression-protein analyses, Bayesian colocalization, network analysis, and granulosa-cell experiments. ZBDHW ingredients and candidate targets were retrieved from BATMAN-TCM 2.0. Summary data-based Mendelian randomization and Bayesian colocalization integrated methylation, expression, and protein quantitative trait loci with the largest European AAM genome-wide association study. Protein-protein interaction analysis assessed network connectivity. KGN human granulosa cells were treated with dauricine or oleanolic acid, and CASP3 mRNA expression was measured by quantitative reverse transcription-polymerase chain reaction. CASP3 was the only ZBDHW-associated target showing convergent evidence across gene expression and protein abundance levels, with supportive methylation evidence at cg06796944. Higher genetically predicted CASP3 expression and protein abundance were associated with later AAM, and CASP3 was a central node in the ZBDHW-related protein-protein interaction network. In KGN cells, dauricine increased CASP3 mRNA at 40 and 80 µM, whereas oleanolic acid increased CASP3 mRNA at 200 µM. These findings support a CASP3-centered methylation-expression-protein target axis as a candidate mechanism linking ZBDHW-associated compounds to female pubertal timing, providing genetically informed multi-omics evidence and preliminary granulosa-cell support relevant to the adjunctive use of ZBDHW in precocious puberty.

直白地黄丸(ZBDHW)是一种治疗性早熟的中药方剂,其分子基础尚不清楚。月经初潮(AAM)年龄较早反映了女性青春期的时间提前,并提供了与性早熟相关的遗传可处理的终点。本研究旨在通过综合目标预测、孟德尔随机化甲基化表达蛋白分析、贝叶斯共定位、网络分析和颗粒细胞实验,确定与青春期时间相关的zbdhw相关分子靶点。ZBDHW成分和候选靶点从BATMAN-TCM 2.0中检索。基于数据的孟德尔随机化和贝叶斯共定位整合了甲基化、表达和蛋白质数量性状位点,并进行了欧洲最大的AAM全基因组关联研究。蛋白质-蛋白质相互作用分析评估了网络连通性。分别用水杨碱或齐墩果酸处理KGN人颗粒细胞,用定量逆转录-聚合酶链反应检测CASP3 mRNA的表达。CASP3是唯一在基因表达和蛋白丰度水平上显示趋同证据的zbdhw相关靶标,在cg06796944位点有支持的甲基化证据。较高的基因预测CASP3表达和蛋白丰度与晚期AAM相关,CASP3是zbdhw相关蛋白-蛋白相互作用网络的中心节点。在KGN细胞中,尿嘧啶在40和80µM时增加CASP3 mRNA,而齐墩果酸在200µM时增加CASP3 mRNA。这些发现支持以casp3为中心的甲基化表达蛋白靶点轴作为将ZBDHW相关化合物与女性青春期时间联系起来的候选机制,提供了与ZBDHW辅助治疗性早熟相关的遗传多组学证据和初步颗粒细胞支持。
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引用次数: 0
Biological Evaluation of Silver@Au Core–Shell Nanoparticles for Breast Cancer Therapy Silver@Au核壳纳米颗粒治疗乳腺癌的生物学评价
IF 1.4 4区 化学 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL Pub Date : 2026-10-26 DOI: 10.1134/S1990793126700776
Z. Sh. Kadhim, N. Kh. Abdalameer, K. Arjunan

Silver–silver oxide (Ag/AgO) and Ag/AgO:Au core–shell nanoparticles were synthesized by a hybrid pulsed laser ablation–plasma jet technique, in contrast to a dual plasma jet methodology. We employed X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), ultraviolet-visible near-infrared spectroscopy (UV-Vis-NIR), and transmission electron microscopy (TEM) to investigate the structure, shape, and optical properties of the nanoparticles. X-ray diffraction (XRD) analysis confirms that the prepared nanoparticles belong to the face-centered cubic structure. The FESEM results showed that well-dispersed spherical and agglomerated core-shell nanostructures could be produced with sizes ranging from 19 to 100 nm. The prepared nanoparticles absorbance spectra show a strong peak at 517 nm. TEM analysis clearly revealed a core–shell morphology, confirming that the synthesis routes were effective. The cytotoxic efficacy of the synthesized nanoparticles was assessed in vitro against MDA-MB-231 breast cancer cells and REF-52 normal fibroblast cells. These methods showed selective anticancer activity. The plasma jet method inhibited cancer cell growth by up to 63.3% after 48 h, while exhibiting relatively low toxicity towards normal cells (<21%). The hybrid laser-plasma technique demonstrated a more favorable therapeutic index, exhibiting significant anticancer efficacy (~51.6% inhibition) alongside diminished cytotoxicity towards normal cells (<15%). These results underscore the potential of Ag/AgO: Au core–shell nanoparticles, synthesized via plasma-based hybrid methods, as viable candidates for safe and effective nanomedicine in cancer treatment.

采用脉冲激光烧蚀等离子体喷射混合技术合成了银/氧化银(Ag/AgO)和Ag/AgO:Au核壳纳米颗粒,而不是采用双等离子体喷射方法。利用x射线衍射(XRD)、场发射扫描电镜(FE-SEM)、紫外-可见-近红外光谱(UV-Vis-NIR)和透射电子显微镜(TEM)研究了纳米颗粒的结构、形状和光学性质。x射线衍射(XRD)分析证实所制备的纳米颗粒属于面心立方结构。FESEM结果表明,在19 ~ 100 nm范围内,可以制备出分散良好的球形和团聚的核壳纳米结构。纳米粒子的吸光度在517 nm处有一个强峰。透射电镜分析清楚地显示了核壳形态,证实了合成路线是有效的。体外研究了合成的纳米颗粒对MDA-MB-231乳腺癌细胞和REF-52正常成纤维细胞的细胞毒作用。这些方法具有选择性抗癌活性。48小时后,等离子体喷射法对癌细胞生长的抑制率高达63.3%,而对正常细胞的毒性相对较低(21%)。混合激光等离子体技术显示出更有利的治疗指标,显示出显著的抗癌效果(~51.6%的抑制),同时对正常细胞的细胞毒性降低(<15%)。这些结果强调了通过等离子体混合方法合成的Ag/AgO: Au核壳纳米粒子的潜力,作为安全有效的纳米药物用于癌症治疗。
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引用次数: 0
Processing–structure–mechanical property relationships in Au-added YBa2Cu3O7−x superconductors investigated by dynamic microindentation 动态微压痕研究了添加au的YBa2Cu3O7−x超导体的加工-结构-力学性能关系
IF 3.2 4区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-10-26 DOI: 10.1007/s10854-026-18639-1
R. Terzioglu, A. Varilci, O. Ozturk, C. Terzioglu

The optimization of mechanical reliability in high-temperature superconductors is essential for their practical application in power systems, magnets, and electronic devices. In this study, the influence of Au addition on the structural, microstructural, compositional, and mechanical behavior of YBa2Cu3O7−x (YBCO) ceramics was systematically investigated using XRD, SEM/EDS, quantitative grain size analysis, and dynamic microindentation. Bulk samples containing 0, 1, 5, 15, and 20 wt% Au were prepared by the conventional solid-state reaction method. Load–displacement data obtained using a UMT-Bruker SYS2 system were used to evaluate contact depth (hc), projected contact area (Ac), stiffness (S), creep behavior, Vickers hardness (Hv), reduced elastic modulus (Er), indentation-derived fracture toughness (KIC), and elastic recovery ratio (ERR). XRD analysis showed that the characteristic YBCO crystalline structure was largely preserved after Au addition, while the crystallite size increased progressively with Au content. Quantitative SEM analysis revealed a non-monotonic variation in grain size, increasing from 2.86 ± 1.03 µm for Y to 3.57 ± 1.94 µm for YA1 and approximately 4.1 µm for YA5 and YA15, before decreasing to 3.30 ± 1.57 µm for YA20. EDS analysis further confirmed the progressive increase in locally detected Au content. The mechanical response was strongly dependent on both Au concentration and applied load. Among the investigated compositions, YA1 (1 wt% Au) exhibited the most favorable response at higher indentation loads, combining lower penetration depth and creep displacement with higher Hv, S, Er, and KIC than the undoped sample. At 2.0 N, Hv increased from 0.463 GPa for Y to 0.879 GPa for YA1, Er from 17.086 to 30.136 GPa, and KIC from 2.61 to 4.16 MPa m1/2, while hmax decreased from 14.860 to 10.871 µm. In contrast, excessive Au addition produced pronounced mechanical softening, with YA20 exhibiting substantially larger penetration and contact areas together with markedly lower hardness, stiffness, and reduced modulus. The combined results demonstrate that the mechanical response cannot be explained by crystallite or grain size alone but is governed by the combined effects of grain size distribution, grain boundary condition, local compositional heterogeneity, and Au distribution. These findings identify an optimum low-Au regime rather than a monotonic strengthening effect and highlight the importance of controlling Au concentration to achieve a favorable processing–structure–mechanical property relationship in bulk YBCO ceramics.

高温超导体机械可靠性的优化对于其在电力系统、磁体和电子器件中的实际应用至关重要。本文采用XRD、SEM/EDS、定量粒度分析和动态微压痕等方法,系统研究了Au添加对YBa2Cu3O7−x (YBCO)陶瓷的结构、显微组织、成分和力学行为的影响。采用传统的固相反应方法制备了含有0、1、5、15和20 wt% Au的样品。使用UMT-Bruker SYS2系统获得的载荷-位移数据用于评估接触深度(hc)、投影接触面积(Ac)、刚度(S)、蠕变行为、维氏硬度(Hv)、降低弹性模量(Er)、压痕断裂韧性(KIC)和弹性恢复比(ERR)。XRD分析表明,加入Au后,YBCO的晶体结构基本保持不变,晶粒尺寸随着Au含量的增加而逐渐增大。定量SEM分析显示,y1的晶粒尺寸从2.86±1.03µm增加到3.57±1.94µm, YA5和YA15的晶粒尺寸约为4.1µm, YA20的晶粒尺寸减小到3.30±1.57µm。EDS分析进一步证实了局部检测到的Au含量逐渐增加。机械响应强烈依赖于Au浓度和施加的载荷。在所研究的成分中,YA1 (1 wt% Au)在高压痕载荷下表现出最有利的响应,与未掺杂的样品相比,YA1 (1 wt% Au)具有更低的渗透深度和蠕变位移,更高的Hv、S、Er和KIC。在2.0 N下,y1的Hv从0.463 GPa增加到0.879 GPa, Er从17.086增加到30.136 GPa, KIC从2.61增加到4.16 MPa m1/2, hmax从14.860减少到10.871µm。相反,过量的Au添加会产生明显的机械软化,YA20的渗透面积和接触面积明显增大,硬度、刚度和模量明显降低。综合结果表明,力学响应不能仅由晶粒尺寸或晶粒尺寸来解释,而是由晶粒尺寸分布、晶界条件、局部成分非均质性和Au分布的综合作用决定的。这些发现确定了最佳的低Au状态,而不是单调强化效应,并强调了控制Au浓度对于实现块体YBCO陶瓷良好的加工-结构-力学性能关系的重要性。
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