自然衰老

低叶绿素b水稻叶片自然衰老过程中光合作用与叶绿素荧光参数的变化

Changes in photosynthesis and chlorophyll fluorescence parameters during rice leaf senescence in low chlorophyll b mutant

棉花叶片自然衰老和病害胁迫时SOD、POD活性与光合特性的变化

Changes of superoxide dismutase , peroxidase activity and photosynthetic characteristics during senescence and disease stress in cotton leaves

鲤鱼精巢DNA对自然衰老小鼠体内抗氧化酶活性的影响

Effects of Carp Spermary DNA on Some Oxidoreductase Activities in Naturally Senile Mice

结果表明，鲤鱼精巢DNA可明显提高自然衰老小鼠体内抗氧化酶的活性。

The results showed that DNA from carp spermary could enhance the activities of these enzymes in naturally senile mice .

其中自然衰老和衰老相关的神经退行性疾病如阿尔茨海默病（Alzheimer'SDisease，AD）一直是研究的热点并试图有所突破。

Normal aging and aged-associated neurodegenerative diseases , such as Alzheimer 's Disease ( AD ), have been the focus of research .

油菜叶片在其自然衰老过程中，伴随着SOD活性和维生素C含量下降，MDA含量显著增加。

The rape leaves senescence was associated with the decreases of SOD activity and vitamin C content , with notable increase of MDA content .

目的研究白果清蛋白（GAP）对自然衰老小鼠及半乳糖致亚急性衰老模型小鼠的延缓衰老作用，并探讨作用机制。

Aim By using natural aging mice and D-galactose-induced subacute aging mice , Anti-aging effects of GAP were studied and the mechanism of the effects was discussed .

方法采用大鼠脑室内微量反复注射喹啉酸（quinolinicacid，QA）造成的学习记忆障碍模型和自然衰老大鼠，测定其学习记忆功能和脑内胆碱能神经系统的变化。

Methods The learning and memory impairment model was established through intraventricular injecting quinolinic acid ( QA ) repeatedly .

损伤性、自然衰老动物和复合型动物模型能够复制出认知缺损等表现，但缺乏AD的特征性病变。

Although the animal models such as experimental injury , normal aging and compound types could represent the cognitive deficit , they lack the essential neuropathological characteristics of AD.

结论GAP能在一定程度上延缓自然衰老小鼠及半乳糖亚急性致衰老模型小鼠的衰老过程，其作用机制可能与提高小鼠的免疫功能和抗氧化能力有关。

Conclusion GAP can delay aging process of D-galactose-induced subacute aging mice and natural aging mice in some degree , the mechanism maybe related to increasing immune function and antioxidative ability .

目的：观察自然衰老大鼠不同脑区M胆碱受体包括M1亚型受体的变化。

Objective : To study the change of muscarinic cholinergic receptors and M 1 subtype in brain regions of aged rats .

小麦叶片在连体自然衰老和离体暗诱导衰老过程中，过氧化氢酶（CAT）活力比抗坏血酸过氧化物酶（APX）活力下降得早。

The activity of ascorbate peroxidase ( APX ) decreased later than that of catalase ( CAT ) during the course of senescence of intact and detached wheat leaves .

ZMS对自然衰老小鼠脑M受体调整作用的时效和量效研究

Dose and Dose Response of Regulation Effect of ZMS and Brain M Receptors if Aged Mice

自然衰老的那批种子在第3染色体定位2个影响发芽率QTL，加性效应作用方向相反，第1染色体上定位1个发芽势QTL；

One QTL for GP was identified on chromosome 1 . For the accelerated aged seeds , two QTLs were detected on chromosome 9 , the directions of additive effect at two QTLs were opposite .

结论O3衰老动物模型与自然衰老近似，在衰老的研究和抗衰老药物的药理实验中具有一定应用价值。

This animal model DNA damage of O 3 animal model is consistent with that of natural aging animal ; this animal model and the method of SCGE are useful for future researches on aging and antiaging medicine .

衰老小鼠及正常小鼠T细胞培养上清对CD137分子表达水平无显著影响。（5）亚急性衰老小鼠模型和自然衰老小鼠CD137分子mRNA低于正常小鼠水平。

MRNA of T cells from aging mouse and subacute senile mouse was decreased , and mRNA from T cells of model mouse seem have a lower quantity than the aging mouse .

在自然衰老小鼠实验中，分别进行了对小鼠免疫器官的影响实验、碳粒廓清作用实验、血清半数溶血值（HC50）实验以及二硝基氟苯诱导小鼠迟发型超敏反应（DTH）实验。

In the experiments of natural aging mice , effect on immune organ , carbon granula clearance ability , serum hemolysin level , DTH induced by DNFB were determined .

结果表明TLG对自然衰老小鼠学习记忆障碍有一定的改善作用，其机制可能与增强机体抗氧化能力及抑制细胞凋亡有关。

The results showed TLG significantly improved learning and memory impairment of aging mice . It may be to enhance the ability of antioxidation and inhibit apoptosis of cerebral cell .

本研究观察962胶囊对自然衰老大鼠模型海马区神经生长因子（NGF）及其受体TrkA表达的影响，探讨962胶囊改善学习记忆功能的作用机理。

In order to study the protective mechanism of this drug , we observed the expression of nerve growth factor ( NGF ) and its receptor ( Trk A ) in hippocampus of aged rats with or without 962 capsule administrated .

目的探讨外源性核酸对自然衰老小鼠胸腺细胞IL7mRNA和CD127（IL7受体）表达的影响。

Objective To study the effect of exogenous nucleic acid extract on the expression of thymocyte IL 7 mRNA and CD127 ( IL 7 receptor ) in natural aging mice .

本文就TLG对自然衰老小鼠及D-半乳糖所致衰老小鼠的影响进行了研究，并初步探讨了其抗衰老的作用机理。

But effect of total lactones of ginkgo ( TLG ) on aging is very few reported . TLG is the important potent component of EGB . The effects of TLG were studied on the natural aging mice model and D-galactose model , and its mechanisms were analyzed .

油菜叶片自然衰老过程中部分生理指标的变化规律

Changes of several physiological indexes in process of rape leaf senescence

在人类皮肤的自然衰老过程中，弹力纤维进行性降解、片段化直至消失。

During skin natural senescence , elastic fibers degradation and fragmentation disappeared .

青紫薯色素对自然衰老大鼠体内抗氧化能力的影响

In vivo antioxidant activity of sweet-potato anthocyanins in aged rats

给动物园认为查理死于自然衰老。

The zoo believes he died from old age .

小鼠自然衰老模型的评价

The assessment of the normal aged mice model

小麦旗叶自然衰老过程中清除活性氧能力的变化

Changes of ability of scavenging active oxygen during natural senescence of wheat flag leaves

自然衰老与半乳糖催老小鼠重要脏器的形态学差异

Morphological difference of important viscera of mice after natural senility and aging by galactose

的旗叶自然衰老过程中，活性氧清除系统中各部分的清除能力下降是不均衡的。

, the decrease of their ability of scavenging active oxygen was an unbalanced process .

最近的研究已经确定男性睾酮缺乏与自然衰老所致的阿尔次海默病存在联系。

Recent studies had already established a link between testosterone loss in men and AD due to natural aging .