Results 61 to 70 of about 42,433 (259)

Plant–microbe interactions drive the rhizosphere microbial assembly and nitrogen cycling in a subtropical forest

open access: yesFunctional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang   +9 more
wiley   +1 more source

Malignancy-associated metabolic profiling of human glioma cell lines using 1H NMR spectroscopy [PDF]

open access: yes, 2015
胶质瘤恶性转化的原因和机制不明,给临床诊疗带来极大困难。越来越多的研究表明肿瘤恶性转化与细胞代谢紊乱密切相关,但胶质瘤恶性转化相关的细胞代谢特点目前尚不清楚。因此,探寻不同恶性程度胶质瘤细胞的代谢轮廓,将有助于开发监测胶质瘤恶性进展的非入侵式生物标志物和靶向代谢通路的治疗策略。本研究收集5种不同病理级别瘤组织来源的人脑胶质瘤细胞系(CHG5/SHG44/U118/U87/U251),其中CHG5和SHG44为WHOII级来源;U118,U87和U251为WHOIV级来源。体外培养后,首先通过侵袭能力 ...
邵巍
core  

Fat storage and drought tolerance in a seasonally‐adapted primate: Implications for modeling the effects of animal responses to global climate change 灵长类动物在季节性适应下的脂肪储存和耐旱性:模拟动物应对全球气候变化影响的启示

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 168-182, September 2024.
Using long‐term field data, we examined the impact of severe droughts on the health, reproductive success, and behavior of the critically endangered Verreaux's sifaka (Propithecus verreauxi) in Madagascar's seasonally dry tropical forest. Despite reduced availability of high‐quality foods, sifaka exhibited stable body condition and reproductive success,
Carrie C. Veilleux   +2 more
wiley   +1 more source

基于暴露组-脂质组关联研究的代谢相关脂肪性肝病血清中外源性化学物质的风险分析

open access: yesSe pu = Chinese journal of chromatography
代谢相关脂肪性肝病是当前常见的一种肝脏疾病,在世界范围内的患病率高达25%,严重危害人类健康并对社会造成巨大的经济负担。越来越多的研究表明慢性非传染性疾病的发生是环境暴露与遗传因素共同作用的结果,环境污染是其不可小觑的健康风险因素。为了探究环境暴露对代谢相关脂肪性肝病风险及暴露效应,本研究利用超高效液相色谱-串联质谱(UHPLC-MS/MS)的靶向暴露组学和超高效液相色谱-高分辨质谱(UHPLC-HRMS ...
Qianqiang Chen   +6 more
semanticscholar   +1 more source

干预代谢危险因素对脑血管病影响的研究进展

open access: yesZhongguo cuzhong zazhi
代谢危险因素是脑血管病的重要影响因素。随着代谢性脑血管病概念的提出,如何通过干预代谢危险因素改善此类患者的预后是未来重要的研究方向。代谢危险因素可相互影响并协同作用,降压、调脂、控制血糖等对传统代谢危险因素的干预可有效降低脑血管病的发病率和复发率;抗炎、补充维生素、调节肠道菌群等对残余代谢危险因素的干预同样是影响脑血管病发病及预后的重要措施。新型代谢药物“一专多能”的特点为代谢性脑血管病的治疗和管理提供了新的思路。本综述总结干预代谢危险因素对脑血管病影响的循证医学证据 ...
张方圆, 薛婧, 许杰, 王拥军 ZHANG Fangyuan, XUE Jing, XU Jie, WANG Yongjun
doaj   +1 more source

Associations of Fetuin B with Metabolic Syndrome [PDF]

open access: yes, 2017
研究背景 代谢综合征是一组复杂的代谢紊乱症候群,指人体蛋白质、脂肪、碳水化合物等物质发生代谢紊乱的病理状态。其基本特点包括:糖代谢紊乱;高凝血、低纤溶血症;脂代谢紊乱;高血压;肥胖或超重;血管内皮功能障碍;高尿酸血症;微量白蛋白尿;高同型半胱氨酸血症等。目前代谢综合征的发病机制并不明确,大多认为由遗传因素与环境因素共同决定,其中中心性肥胖是代谢综合征的关键始动因素,胰岛素抵抗是发病的中心环节,慢性轻度炎症促进代谢综合征的发展。代谢综合征与心血管死亡率增加密切相关,这使本病的预后更加严重 ...
王冬梅
core  

Gut microbiota dynamics of adult and sub‐adult sika deer during reintroduction 重引入过程中成年和亚成年梅花鹿肠道微生物的动态变化

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 257-270, September 2024.
Natural training enclosure design schematic. We selected 12 sika deer including six adults and six sub‐adults. Key considerations in the design of the natural training were to divide the training spatial ground into two parts (30 × 30 m small areas for isolation of new individuals and large areas measuring 200 × 600 m for free walking), and the ...
Wentao Zhang   +10 more
wiley   +1 more source

低pH对草鱼呼吸活动和耗氧代谢的影响 [PDF]

open access: yes, 1992
研究了低pH(6.0—3.6)对草鱼呼吸活动机能及耗氧代谢的影响.结果表明,在pH4.6—3.6条件下,草鱼呼吸和气体代谢活动受干扰的程度随酸度增大而急剧加重.其具体表现为:呼吸率加快,咳嗽反应增加,呼吸深度加大.耗氧率起始升高继而迅速下降,并在极端pH(3.6)下最终引起机体组织缺氧而致死.对于pH5.6,草鱼各类呼吸与代谢指标未受明显影响,基本属于正常.供试草鱼对低pH反应的灵敏程度依次为:咳嗽率>呼吸率>耗氧率> ...
余日清,贺锡勤
core  

针灸促进胃黏膜损伤修复的代谢机制研究进展 [PDF]

open access: yes, 2019
介绍针灸促进胃黏膜损伤修复的代谢机制,重点从针灸在胃黏膜损伤修复的氨基酸代谢、脂代谢、糖代谢等几个方面探讨其机理,认为针灸可通过调节以上3个方面的代谢途径实现胃黏膜修复,并提出代谢组学在中医应用的展望。广东省自然科学基金项目(2017A030313748)深圳市卫生计生委科研项目(201607061)深圳市福田区卫生公益性科研项目 ...
冯军, 杨宗保, 杨锦兰, 谢宇锋
core   +1 more source

宏基因组联合UPLC-Q-TOF-MS/MS探讨地塞米松对大鼠肺炎的作用机制

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2023
目的基于多组学技术,探讨地塞米松(Dex)能否通过调节肠道菌群及代谢物治疗肺炎。方法将18只Sprague-Dawley大鼠随机均分为对照(Control)组、模型(Model)组和地塞米松(Dex)组,每组6只,除Control组外,余下两组持续使用4 mg/kg的脂多糖(LPS)腹腔注射7 d建立大鼠肺炎模型。然后Dex组给予2 mg/kg的Dex灌胃治疗12 d,余下两组均连续灌胃等量的无菌PBS缓冲液12 d。第19 d时收集大鼠的肺组织、血浆、粪便和肠道内容物。苏木精-伊红(H&E ...
李四菊   +5 more
doaj  

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