罗布麻的抗衰老作用机制研究

目的 探讨罗布麻的抗衰老作用机制。方法 利用网络药理学预测罗布麻抗衰老相关的活性成分、作用靶点、分子功能、信号通路；利用衰老小鼠模型对罗布麻的抗衰老作用及其关键靶点进行验证。结果 网络药理学预测得到罗布麻抗衰老相关的9个活性成分、85个关键靶点、116个分子功能和163条信号通路；动物模型验证了罗布麻减轻D-半乳糖导致的小鼠衰老表型，下调P53的表达。结论 罗布麻含有多种活性成分，通过调控P53等靶点，发挥其衰老作用。     

衰老动物模型的研究及其在抗衰老药物活性筛选中的应用

衰老以及衰老相关疾病使得人类生活的负担逐年加重。延缓衰老、减少衰老相关疾病的发生是解决问题的根源。动物模型是衰老研究的重要工具,就酵母、线虫、果蝇、斑马鱼、快速老化小鼠、D-半乳糖衰老模型、恒河猴等多种衰老研究中常用动物模型的特点及其在抗衰老药物筛选中的应用进展进行归纳总结,为衰老研究中相关动物模型的选择提供依据。     

衰老的分子调控机制及中药的干预作用

衰老(aging)是生物体组织、器官以及细胞功能随时间而逐渐丧失的渐进过程。有关衰老分子机制的学说包括经典的"端粒(telomere)学说"、"氧自由基(oxygen radical)学说"、"非酶糖基化(nonenzymatic glycosylation)学说"等,还有新近提出的"DNA甲基化(DNA methylation)学说"、"线粒体DNA(mitochondrial DNA,mt DNA)学说"、"自噬(autophagy)学说"等。最新的研究表明,自噬是造血干细胞对抗衰老的一种有效措施。近年来,基于衰老的分子调控机制而发现了一些很有前途的抗衰老药物,如烟酰胺单核苷酸(nicotinamide mononucleotide,NMN)和抗衰老肽——FOXO4-DRI。此外,在植物提取物领域中也有很多新发现,其中,以姜黄素(curcumin)、白藜芦醇(resveratrol)为代表的中药提取物以及一些单味中药、经典的中药复方可以在体内外干预人类衰老的分子调控机制而发挥一定的抗衰老作用。总之,基于衰老分子调控机制而研制或发掘抗衰老药物,尤其是天然药物,这是抗衰老研究领域的主要发展方向之一。     

The efficacy and safety of health qigong for anti-aging: Protocol for a systematic review and meta-analysis

Background:Aging is a phenomenon that human''s physiology and psychology is progressive decline for natural environment. Health Qigong, as a convenient and effective exercise therapy,is widely used for anti-aging. However, there are no systematic reviews or meta-analysises to evaluate the efficacy and safety of Health Qigong on anti-aging.Methods:We will systematically search for 7 English databases(PubMed, Excerpta Medica Database, MEDLINE, Web of Science, Cochrane Library, SpringerLink, and WHO International Clinical Trials Registry Platform) and 4 Chinese databases(namely the China National Knowledge Infrastructure Database, the Wanfang Database, the Chinese Scientific Journal Database, and the Chinese BioMedical Literature Database) from their inceptions to August 2020. Randomized controlled trials (RCTs) using Health Qigong to anti-aging will be included. After the selection and extraction of eligible studies, a meta-analysis will be undertaken to assess the efficacy and safety of Health Qigong on anti-aging. Moreover, study selection, data extraction, and the evaluation of the methodological quality of trials will each be independently completed by at least 2 researchers. The Review Manager Software V.5.3 will be employed for meta-analysis to assess the risk of bias, data synthesis, and subgroup analysis.Results:This review will provide the latest knowledge and evidence on the efficacy and safety of Health Qigong for anti-aging through the analysis of various evaluation scales.Conclusion:The conclusion of this review will help clinicians provide effective exercise therapy for anti-aging.Registration number:INPLASY202090017     

北柴胡多糖对D-半乳糖致衰老模型小鼠的保护作用及其机制

探讨北柴胡多糖（BCP）对D-半乳糖诱导的衰老模型小鼠的保护作用并阐明其作用机制。     

江苏地产白首乌C21甾苷抗衰老作用研究

目的研究江苏地产白首乌C21甾苷(C21 steroidal glycoside,CSG)抗氧化、耐缺氧、抗疲劳等抗衰老作用。方法以维生素E[VE,100mg/(kg.d)]为对照,观察CSG低、中、高剂量组[10mg/(kg.d)、20mg/(kg.d)、40mg/(kg.d),即CL、CM、CH组]对小鼠常压耐缺氧试验,负重游泳试验和D-半乳糖(D-gal)亚急性衰老模型小鼠的影响。测定小鼠常压耐缺氧和负重游泳时间,取血清、心、肝、脑组织,黄嘌呤氧化酶法测定超氧化物歧化酶(SOD)活性,硫代巴比妥酸法测定丙二醛(MDA)含量,ELISA法检测端粒酶活性。结果与正常对照组相比,CSG和VE能够延长健康小鼠常压耐缺氧和负重游泳时间,提高D-gal模型小鼠血清、心、肝、脑SOD活性,降低MDA含量;中、高剂量CSG组小鼠血清端粒酶活性升高;CSG低、中、高剂量组及VE组小鼠心脏端粒酶活性均升高(P<0.01);CSG及VE对小鼠肝及脑组织端粒酶活性无影响。结论CSG能拮抗自由基损伤,提高健康小鼠常压耐缺氧和负重游泳时间,提高D-gal衰老模型小鼠血清、心、肝、脑组织SOD活性,减少MDA含量,提高心脏组织中端粒酶活性。具有抗氧化、延缓衰老、抗疲劳作用。     

重组人干扰素a-2b栓的质量研究和稳定性研究

目的本次试验研究的目的是将重组人干扰素α-2b制备成通过直肠局部给药达到全身作用的栓剂。方法应用脂肪酸甘油酯suppcioreBM为基质,以Triton X-100为促吸收剂,制备重组人干扰素α-2b栓。以稳定性为指标,考察重组人干扰素α-2b栓的处方。结果用此方法制备的重组人干扰素α-2b栓稳定性强,在2～8℃条件下可保存24个月。结论重组人干扰素α-2b栓的应用可增强患者的顺应性,在临床中应用性强。     

茯苓抗衰、养生与美容作用诠析

茯苓是一味常用的抗衰老、养生与美容中药之一,就茯苓的相关作用机制进行了诠析。认为,茯苓通过健脾与渗湿作用达到抗衰老、养生与美容的目的。深入研究茯苓的抗衰老机制及其养生与美容作用,在当前关注养生与美容的今天,具有十分重要的意义。     

气络学说指导抗衰老研究

随着全球老龄化程度加剧,衰老和健康长寿已成为全世界关注的焦点.以气络学说为指导,提出"精是生命起源、气是生命动力、神是生命体现"的精气神理论,从"肾元亏虚,累及五脏,五脏所伤,穷必及肾"的整体观出发,提出中医衰老病机——"肾精虚衰"是衰老根本、"元气亏虚"是衰老关键、"形神耗损"是衰老表现,为"老者复壮,壮者益治"的抗...     

Greener Solution to Waste Corn Stalks and Shortage of Asphalt Resource: Hydrochar Produced by Hydrothermal Carbonization as a Novel Performance Enhancer for Asphalt Binder

Utilization of waste corn stalks (CS) has seized extensive attention due to high annual output and hazardous impact of piling aside or direct combustion on environment. However, previously there has been a lot of emphasis on improvement of its energy efficiency as solid fuel while limited investigations are available which explore the possibility of applying corn stalks as performance enhancer in asphalt binder. The purpose of this study is to examine the potential of employing hydrochar as modifiers in asphalt binder by a series of experimental tests. In this study, two hydrochar were produced from corn stalks by a novel process called hydrothermal carbonization at a different reaction temperature. The two hydrochar and their responding hydrochar-modified asphalt (HCMA) were tested by chemical and rheological tests. Chemical analysis detected the interaction between hydrochar and binder factions, resulting in poor compatibility but satisfying anti-aging property. Even though hydrochar increased the viscosity of bitumen, implying worse workability, and caused poor storage stability, ameliorated performance of asphalt binder at high temperature by incorporating hydrochar was verified by various criteria such as higher performance grade (PG) failure temperature and lower non-recoverable creep compliance (J_nr). Moreover, higher reaction temperature makes hydrochar’s particles smaller and more homogeneous, which results in slightly lower enhanced high temperature performance, more satisfying workability, better storage stability, and greater anti-aging effect of hydrochar-modified asphalt. Eventually, this study provided a promising win-win solution to environment problems concerning corn stalk treatment and shortage of asphalt binder. Further exploration of methods to improve HCMA’s storage stability, real-scale corroboration on trial section and life cycle assessment of asphalt pavement containing hydrochar modifiers will be followed in the future.