Results 61 to 70 of about 20,998 (187)

Enhancement of hypothalamic STAT3 acetylation by nuclear receptor Nur77 dictates leptin sensitivity [PDF]

open access: yes, 2015
孤儿核受体Nur77(也称为TR3)是核受体家族NR4A的一员,在脂肪、肝脏和骨骼肌组织的代谢调控中发挥重要功能,因此被认为是一种新型的治疗代谢性疾病的药物靶点。本文研究中我们发现,在正常生理条件下,随着年龄的增长,Nur77基因敲除的小鼠体重明显高于野生型小鼠。摄食的增多和能量消耗的减少是Nur77基因敲除小鼠体重上升的直接原因。棕色脂肪组织耗能产热功能的衰退也促使了脂肪的积累。原位杂交和实时荧光定量PCR结果显示,Nur77能够正调控瘦素leptin下游厌食多肽POMC的表达。脑室内注射leptin,
肖倩
core   +1 more source

Claw growth rates in a subset of adult, indoor, domestic cats (Felis catus)

open access: yesVeterinary Dermatology, Volume 36, Issue 3, Page 362-367, June 2025.
Background – Keratinised tissues, such as nails and claws, accumulate hormones over time; the claws' hormone concentrations are being explored as potential biomarkers. Timelines for hormone deposition can be established if claw growth rates are known. Hormone concentration within cat claws has been recently evaluated, yet the growth rates of cat claws ...
Elena T. Contreras   +3 more
wiley   +1 more source

The relationship between the levels of white blood cell and lipopolysaccharide binding protein and intrahepatic triglyceride content , metabolic abnormalities in obese adults [PDF]

open access: yes, 2016
研究目的 非酒精性脂肪性肝病(NAFLD)常常伴随炎性因子的增多,且其发生发展与代谢综合征和胰岛素抵抗紧密相关。本研究针对中心性肥胖人群进行横断面数据分析,探讨白细胞(WBC)及脂多糖结合蛋白水平(LBP)与肝脏脂质含量(IHTC)及其相关代谢异常的关系。 研究方法 本研究纳入485名40-65岁中心性肥胖受试者,进行问卷调查包括病史、生活方式等;测定生化指标并进行胰岛功能评估;通过氢质子磁共振波谱(1H-MRS)技术定量分析肝内甘油三酯含量;进行内脏脂肪含量等测定 ...
孙倩
core  

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

代谢综合征患者血小板及血液流变学指标的变化

open access: yesZhongguo shiyan zhenduanxue, 2007
目的对代谢综合征患者血小板参数及血液流变学指标进行观察分析。方法选择单纯性代谢综合征患者20例,合并并发症代谢综合征患者22例,对照者20例作为研究对象。测定3组人员的血细胞比容、红细胞数量、血红蛋白浓度、血小板参数、纤维蛋白原浓度、全血及血浆粘度。结果①代谢综合征患者血小板平均容积、血小板容积分布宽度和大血小板比率高于对照组 ...
徐升强, 王顺
doaj  

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open access: yesLughawiyah: Journal of Arabic Education and Linguistics, 2019
┘è┘çÏ»┘ü ┘çÏ░Ϻ Ϻ┘äϿϡϽ ÏÑ┘ä┘ë Ϻ┘äÏ¡ÏÁ┘ê┘ä Ï╣┘ä┘ë ┘àÏ╣┘ä┘ê┘àϺϬ Ï¡┘ê┘ä ϬÏ╣┘ä┘à Ϻ┘ä┘äÏ║Ï® Ϻ┘äÏ╣Ï▒Ï¿┘èÏ® ┘êϫϺÏÁÏ® ┘à┘çϺÏ▒Ï® Ϻ┘ä┘â┘äϺ┘à ┘ü┘è ┘éÏ│┘à ϬÏ╣┘ä┘è┘à Ϻ┘ä┘äÏ║Ï® Ϻ┘äÏ╣Ï▒Ï¿┘èÏ® ┘ü┘è ϼϺ┘àÏ╣Ï® ϿϺϬ┘êÏ│┘åϼ┘âÏ▒ Ϻ┘äϺÏ│┘äϺ┘à┘èÏ® Ϻ┘äÏ¡┘â┘ê┘à┘èÏ®. ┘èÏ│Ϭϫϻ┘à Ϻ┘äϿϡϽ ┘à┘å┘çϼϺ ┘â┘à┘èϺ. ÏúÏ»┘êϺϬ ϼ┘àÏ╣ Ϻ┘äÏ¿┘èϺ┘åϺϬ ┘ç┘è Ϻ┘
openaire   +1 more source

Selective Isolation, Identification and Biological Activity Investigation of Rare Actinomycetes from Rhizosphere Soil [PDF]

open access: yes, 2016
天然产物是新药制备的重要原料,绝大多数来源于微生物的天然产物都分离自放线菌,尤其是链霉菌。链霉菌是放线菌的重要组成成员,能合成结构类型丰富、生物活性多样的次级代谢产物,可用于创制抗生素、抗肿瘤药物、免疫抑制药物、抗虫药物等,在医疗、农业、食品等领域具有重要的应用价值。然而,随着对链霉菌持续的开发利用,目前从链霉菌中发现新型、高活性的次级代谢产物的几率在不断下降,来源于链霉菌的新药研发速度明显放缓。为了解决链霉菌活性次级代谢产物资源日趋枯竭的问题 ...
施金迪
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

翻译后修饰与肿瘤代谢重编程

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2022
恶性肿瘤是常见的严重威胁人类生命和影响人类生活质量的重大疾病之一。探索肿瘤细胞中普遍存在但又异于正常细胞的生物学特性,并针对该特性进行特异性干预,是提高肿瘤治疗疗效的关键。肿瘤细胞代谢的改变是肿瘤的重要特征之一,其与肿瘤的发生发展互为因果。随着对肿瘤代谢分子生物学基础研究的深入,越来越多的证据表明,代谢过程的改变包括但不局限于代谢酶自身的突变或代谢调控蛋白的活性变化,均可导致肿瘤细胞的代谢重编程,使肿瘤细胞具有特征性的代谢模式。翻译后修饰是细胞内的特定化学基团从一个蛋白传递到另一个蛋白的反应 ...
范骏
doaj  

The Lysosomal v-ATPase-Ragulator Complex Is a Common Activator for AMPK and mTORC1 [PDF]

open access: yes, 2015
AMPK和mTORC1是机体和细胞内最重要的调节代谢稳态的分子。人们已经发现,AMPK复合体能够通过与体内AMP结合从而感知体内AMP/ATP的水平,并在该水平较高(即能量水平较低)的情况下引发其复合体活性的增加。该结果直接导致了多条信号通路的抑制或激活,从而引起一系列的生理变化。其结果是增加体内的产能代谢从而达到稳定体内能量水平的作用。与AMPK相反,mTORC1的激活需要在细胞内能量水平较高的情况下才能发生。mTORC1激活进一步激活了一系列下游分子 ...
张宸崧
core  

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