炎性反應(yīng)在阿爾茨海默病認(rèn)知功能障礙發(fā)生與發(fā)展中的作用
[Abstract]:Background and purpose of the study: The existing studies have shown that the deposition of amyloid A-like protein in the brain of the patients with Alzheimer's disease (AD) has increased and the inflammatory response is significantly increased, however, to date, The relationship between the inflammatory response of A-AD in different pathological forms and the relationship between the inflammatory response of AD and the impairment of cognitive function are not in-depth study. The relationship between A-type and D-brain inflammatory reaction in different pathological forms, as well as the relationship between the response of AD and the impairment of cognitive function, and the prevention and treatment of AD were discussed in this study. Methods: The acquired space learning ability and spatial memory of the experimental animals were tested by Morris water maze test in the study of the three-transgenic AD mice and the age-matched wild-type (WT) C57BL/6 mice at the age of 3.5 months,6 months and 12 months of age. The changes of A-type starch-like plaque, activated astrocytes and activated microglia in the brain of each group were detected by immunohistochemistry and fluorescence staining. The soluble A in the brain of each group of experimental animals was detected by ELISA. Expression of IL-1, IL-6, TNF-and PGE _ 2 in A-and inflammatory-response media In this paper, the relationship between A-type (total A-plaque, fibrous A-plaque, soluble A-and non-soluble A-type) and AD-brain inflammatory reaction in different pathological forms, as well as the correlation between the inflammatory reaction of AD and the impairment of cognitive function were discussed using the correlation analysis method. The results of the study were as follows: (1) The Morris water maze test showed that the latent escape time of APPswe/ PS1dE9 mice at the age of 3.5 months was not significantly different from that of the control group WT mice, and the latent escape period in the 6-and 12-month-old APPswe/ PS1dE9 mice were significantly different from those of the corresponding WT mice. The results showed that APPswe/ PS1dE9 mice in the 3.5-month-old group did not have A-type amyloid plaque deposit in the brain of the 3.5-month-old group. There was no significant difference in the content of soluble A in the brain of APPswe/ PS1dE9 in the age group, and no soluble A content was detected in the brain of APPswe/ PS1dE9 in the 3-month-old age group, while the content of soluble A-A in the brain of APPswe/ PS1dE9 in the 12-month-old group was significantly higher than that of the 6-month-old. There was no significant difference in the number of activated astrocytes in the brain of APPswe/ PS1dE9 mice in the 3.5-month-old group compared with the control group WT mice, and the number of activated astrocytes in the brain of the APPswe/ PS1dE9 mice in the 6-month-old group and the 12-month-old group was significantly higher than that of the control group WT mice. Increased number of activated astrocytes and activated microglia in the brain of APPswe/ PS1dE9 mice in different age groups The results showed that the levels of IL-1, IL-6, TNF, and PGE2 in the brain of the mice were significantly higher than those of the control group, and the levels of IL-1, IL-6, TNF and PGE2 in the brains of the mice were significantly higher than those in the control group. The correlation between the levels of soluble A in the brain of APPswe/ PS1dE9 mice and the activation of glial cells, IL-1, I, and I in the brain of APPswe/ PS1dE9 in different months of age showed that the level of soluble A-antigen in the brain of APPswe/ PS1dE9 in different months was the same as that of the activated glial cells. The levels of L-6, TNF and PGE2 were significantly correlated, while in the early and late stage of the plaque, the total A-A plaque, the fibrous A-plaque and the non-soluble A-A content and the inflammatory response index were not significant. The correlation between (5) inflammatory response and cognitive impairment showed that the spatial memory capacity of the 3.5-month-old APPswe/ PS1dE9 mice was significantly higher than that of activated microglia, IL-1, IL-6, TNF-and PGE2. The spatial learning and memory capacity of APPswe/ PS1dE9 in 6-and 12-month-old mice were significantly correlated with the activated astrocytes, activated microglia, IL-1, IL-6, TNF-and PGE2 levels. Conclusion: (1) The enhancement of inflammatory response in the brain of APPswe/ PS1dE9 mice may have occurred earlier in the stage of the precursor plaque, in the early and late stage of plaque formation. (2) The levels of multiple inflammatory markers in the brain tissue of the APPswe/ PS1dE9 mice were significantly correlated with the level of soluble A-type, and were similar to that of the A-type amyloid plaques or insolubles. (3) Multiple inflammatory markers in the brain of APPswe/ PS1dE9 mice and their spatial learning and memory The results of the above-mentioned study show that the soluble A-factor may be a major factor in the response of AD to the internal inflammatory response, while a wide range of inflammatory pathways in the brain may further contribute to the impairment of the AD cognitive function. Occurrence and development, suggesting that anti-inflammatory therapy for multiple inflammatory response pathways may be the prevention and treatment of AD
【學(xué)位授予單位】:第四軍醫(yī)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:R749.16
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