蜂花粉醇提物对小鼠体外生成过氧化脂质的影响

组织器官的衰老与过氧化脂质的生成密切相关，本实验证明蜂花粉醇提物有明显的对抗小鼠肝、肾、脑组织在体外生成过氧化脂质的作用，证明蜂花粉具有延缓衰老的作用。     

Modulation of infection-induced inflammation and locomotive deficit and longevity in senescence-accelerated mice-prone (SAMP8) model by the oligomerized polyphenol Oligonol.

Oligonol is produced from the oligomerization of polyphenols (typically proanthocyanidin from a variety of fruits such as lychees, grapes, apples, persimmons, etc.) and contains catechin-type monomers and oligomers of proanthocyanidins. The ability of Oligonol to affect infection-dependent eye inflammation, locomotion and longevity in senescence-accelerated prone mice (SAMP8) (a model of senescence acceleration and geriatric disorders with increased oxidative stress and neuronal deficit) was investigated. Oligonol (60mg/kg) significantly modulated the extent of inflammation scores in the eye of SAMP8 mice. Examination of the mice indicated infection with mouse hepatitis virus and pinworm (Syphacia obvelata) in both males and females and with the intestinal protozoa (trichomonad) in males. A comparison of the two groups (using log-rank test) and the difference in the mean life span between groups (using Student's t-test) indicated significant differences in survival (p=0.043) and the mean life span (p=0.033) in male SAMP8 mice. Oligonol increased the mean life span and this was statistically significant. In the open-field locomotive test, the 7-week-old SAMP8 mice crossed more than 40 partitioned lines in 1min. At 48-week-old control untreated male SAMP8 crossed 2 lines. The Oligonol-treated 48-week-old male SAMP8 mice crossed 17 lines however. The improved locomotive activity was statistically significant even after 36weeks in the Oligonol-treated male SAMP8 but this was not the case throughout the time course of the study in the Oligonol-treated female SAMP8. Thus Oligonol treatment to SAMP8 mice modulated the severity of infection-dependent inflammation, prolonged life-span and significantly improved locomotive activity indicating potential benefit to aging-associated diseases such as Alzheimer's or Parkinson's diseases. This presents potential for further research to define infection-dependent inflammation associated with degenerative conditions and the molecular mechanism of dietary antioxidant protection.     

三七中人参皂甙对老年鼠血液中抗氧化酶活力影响的研究

对５８例实验小鼠模型的研究以期为三七中人参皂甙单体Ｒｂ１及Ｒｇ１的抗衰老作用提供实验依据,探讨其抗衰老的机理。２０月抗衰老实验组小鼠分别按９０ｍｇ／ｋｇ体重给予三七个参皂甙Ｒｂ１,Ｒｇ１,连续给药３０ｄ,断头取血测工细胞超氧化物睦化酶（ＳＯＤ）及过氧化氢酶（ＣＡＴ）。     

3种海藻多糖抗氧化及其抗衰老活性的初步研究

为探讨海藻多糖抗氧化活性及抗衰老作用,体外测定昆布多糖,羊栖菜多糖,海蒿子多糖对羟基自由基,超氧自由基及其DPPH自由基的清除作用;采用秀丽隐杆线虫为研究模型,在培养基中添加不同浓度的海藻多糖,每日定时观察并记录线虫存活数,计算平均存活率。结果表明海藻多糖具有抗氧化能力,其中1.2mg/mL的昆布多糖羟基自由基清除能力最强,达到92.10%;海蒿子多糖DPPH自由基的清除能力最强,当浓度达到1.2mg/mL时,清除率为59.55%;1mg/mL海蒿子多糖超氧自由基的清除率达15.66%。秀丽隐杆线虫寿命实验表明,不同的海藻多糖均能延长线虫的寿命,且在实验浓度下,多糖浓度越高寿命延长越明显。研究结果表明所选海藻多糖具有显著的体外抗氧化活性,动物实验表明海藻多糖具有抗衰老作用,能显著延长线虫寿命。该结果为海藻多糖应用于医药、保健品领域的开发提供了一定的实验基础。     

蛋白质芯片用于筛选脂肪来源干细胞抗衰老成分的初步研究

目的：筛选脂肪来源干细胞（ ASCs）可能的抗衰老成分。方法采用生物素标记蛋白质芯片技术检测ASCs和成纤维细胞的蛋白成分,采用芯片分析软件提取数据,获得的数据采用AAH－BLG－1数据分析软件作统计分析。结果 ASCs与成纤维细胞相比,肝细胞增殖因子（ HGF）、成纤维细胞生长因子（ FGF）、血管内皮生长因子（ VEGF）等60种相关蛋白质明显上调或下调。结论生物素蛋白质芯片共检测出60种表达量有明显差异的蛋白,证实这些蛋白可能参与了ASCs抗衰老的作用过程。蛋白芯片有助于研究脂肪干细胞抗衰老机制,为进一步研究提供了研究方向。     

Protein kinases as targets for interventive biogerontology: overview and perspectives

Protein kinases are enzymes that catalyze the transfer of γ phosphate from adenosine triphosphate to substrate proteins, and are important signal transduction mediators in a diversity of biological processes, ranging from apoptosis to energy metabolism. In this article, we will take this prominent class of proteins as an example to illustrate the involvement of proteins in modulation of aging and to highlight the prospects and challenges of protein-targeted interventions for anti-aging purposes. It is hoped that through this article, more empirical work on interventive gerontology will follow, and with collaborative endeavors among researchers, hurdles in anti-aging intervention development can be overcome in the near future.     

人脐带间充质干细胞用于衰老相关疾病治疗的研究进展

随着干细胞移植技术的发展,通过输入干细胞进行抗衰老治疗或治疗退行性疾病成为人们研究的热点。人脐带间充质干细胞(human umbilical cord mesenchymal stem cells,HUCMSCs)是一种存在于脐带沃顿胶以及血管周围组织中的独特前体细胞,具有自我更新和多向分化潜能。目前大量科学研究显示HUCMSCs通过再生和修复衰老的细胞、组织和器官达到抗衰老作用。该文对HUCMSCs的生物学特性、组织再生修复作用和抗衰老治疗机制的研究进展进行了详细回顾,并对目前HUCMSCs临床前研究现况进行了总结,提示HUCMSCs是一种具有良好应用潜力和价值的干细胞类型。     

康欣口服液对老年小鼠脑线粒体DNA缺失突变影响的实验研究

目的:研究康欣口服液对Balb/c小鼠脑线粒体DNA(mtDNA)缺失突变的影响。方法:近交系Balb/c小鼠,分为青年组(6周),中年组(6个月),老年组(14个月)各10只,提取小鼠脑组织的mtDNA,采用聚合酶链反应(PCR)技术扩增缺失型的mtDNA片段,以证实老年组小鼠脑组织中存在mtDNA缺失。近交系Balb/c老年小鼠分别灌胃给予生理盐水(老年空白对照组),康欣口服液(老年康欣口服液组),连续四个月后处死,提取脑组织的mtDNA,PCR技术分别扩增野生型和缺失型的mtDNA片段,运用凝胶成像仪进行光密度扫描,比较两组缺失型mtDNA/野生型mtDNA的光密度比值。结果:近交系老年Balb/c小鼠脑mtDNA中存在明显的片段缺失,而在中年组与青年组中未检测到相同片段的缺失。与老年空白对照组相比,康欣口服液能显著降低老年Balb/c小鼠mtDNA的缺失率(P<0.001)。结论:mtDNA的缺失突变随年龄而积累,康欣口服液可以抑制老年小鼠脑mtDNA的缺失。     

浅谈中医对女性衰老机理的认识

中医学有丰富的关于延缓衰老的理论和实践,对女性衰老的认识亦有许多可借鉴之处.女性在生理上有经、孕、产和哺乳等与男性不同的生理特点,因而其衰老过程及发生机理也与男性有明显不同.导致女性衰老的因素是多方面的,随着年龄的增长,虚损与气滞、血瘀、痰浊等相互作用,导致全身功能衰减.深入探讨女性衰老机理、规律,对女性衰老的防治具有积极的意义.     

清醒状态昆明小鼠随日龄变化的心电图分析

目的限制大鼠活动致束缚应激形成大鼠亚健康状态模型,观察亚健康状态大鼠氧自由基变化及中药干预效果。方法雄性SD大鼠40只,体重320—360g,随机分成4组,即正常对照组、模型对照纽、抗衰老片组和六味地黄丸组,每组10只。除正常组外,其它各组每天限制大鼠活动3h,形成束缚应激,建立亚健康状态大鼠模型。在造模同时,各给药组灌胃给予相应的药物。试验第14d和21d,各组随机取5只大鼠,经腹腔取静脉血,测定SOD、GSH-Px活性和MDA、LD含量。结果模型对照组大鼠血清中SOD、GSH-Px活性明显降低俾〈0．05,P〈0．01）,MDA、LD含量明显升高（P〈0．05）;给予抗衰老片后显著提高大鼠血清中SOD、GSH-Px活性和降低血清MDA、LD含量（P〈0．05,P〈0．01）。结论连续每日限制活动3h可使大鼠产生束缚应激,导致抗氧化能力降低,这可能与亚健康状态的形成有关。给予抗衰老片和六味地黄丸可明显提高血清中SOD、GSH—Px活性和降低MDA、LD含量。