紅斑狼瘡動脈粥樣硬化小鼠模型建立、發(fā)病機制及羥氯喹干預研究
[Abstract]:Objective 1. to establish a stable atherosclerotic animal model of systemic lupus erythematosus.2. model, and to observe the effect of systemic lupus erythematosus (Systemic Lupus Erythematosus, SLE) on the severity of atherosclerosis..3. further observed the characteristics of atherosclerotic lesions in lupus, especially the immune system in the arterial part. As well as the changes in the body and the characteristics of blood lipid changes, the potential mechanism of atherosclerosis in lupus is preliminarily discussed. The effect of the common anti SLE drug hydroxychloroquine (hydroxychloroquine, HCQ) on atherosclerosis and its effect on blood lipid and inflammatory reaction are preliminarily observed in order to treat atherosclerosis in clinical. Provide a new choice. Study method 1. apoE-/- and C57BL/6 mice were used to construct a SLE model by intraperitoneal injection of 0.5ml pristane at 8 weeks of age. Some mice were given HCQ.2. by drinking water to test the success of the lupus model by testing the level of autoantibodies, by observing whether atherosclerotic plaques formed a definite movement. Whether the arteriosclerosis model was successfully constructed.3.6 months later, the urine protein was detected, the mice were executed, the mice were killed, the serum was separated, the blood lipid, albumin, total IgG, a (interferon- alpha, IFN- alpha).4. were isolated from the aorta, the heart, the aorta gross oil red 0, and the active pulse flow cytometry for the detection of CD45+, CD19+, CD68+, CD11c+ cells, and aortic valve The root tissue was frozen in continuous frozen section to perform oil red 0 staining, IgG immunofluorescence staining, CD19+, CD68+, CD11c+ cell immunofluorescence staining.5. to prepare splenocytes suspension. Flow cytometry was used to detect CD3+, CD19+, CD11b+, and CD11c+ cell ratio. Results the 1. model was constructed successfully: the mice injected with pristane were positive. The positive rate of dsDNA antibody in istane mice decreased the appearance of.2. mice: some lupus mice were depilatory, skin bleeding, non lupus mice had no above phenomena, and.3. apoE-/- mice weighed more.4. biochemical indexes: apoE-/- mice LDL-C, TC higher than C57BL/6 mice. The disease had no effect on LDL-C. The TC of lupus mice was lower than that of non lupus mice,.HCQ had no significant effect on LDL-C, TC level had no significant effect on the level of blood lipid. The Alb of lupus mice was lower than non lupus mice. The level of hydroxychloroquine on Alb level had no effect on the progression of atherosclerotic plaque in.5.: the area of atherosclerotic plaque in lupus mice was greater than that of non lupus mice and high fat feed feeding. The patch area of the mice was more than that of the normal diet mice. Only the aorta appeared in the apoE-/- mice at the time of death. All the C57BL/6 mice did not observe the aortic plaque. The area of the aortic valve root plaque in the lupus mice was greater than that of the non lupus mice, and the area of the root plaque of the main artery valve in the high fat diet mice was more than that of the normal diet mice. Only apoE-/- mice had plaque at the root of the aortic valve, and no plaque in the aortic valve root was observed in all C57BL/6 mice. The promoting effect of lupus on the aortic valve root plaque was more obvious in the apoE-/- mice fed by high fat diet. Hydroxychloroquine has the effect of inhibiting the atherosclerotic plaque of the aorta and the plaque formation of the main artery valve at the root of the aorta. Composition characteristics: the incidence of lupus caused the increase of aortic cells, and the number of aorta cells in apoE-/- mice was more than that of C57BL/6 mice. The number of aortic cells was reduced by hydroxychloroquine. The total number of leukocytes, dendritic cells, macrophages and B cells decreased in lupus mice. The hydroxychloroquine decreased the white blood cells and dendritic cells in lupus mice The number of macrophages and macrophages increased the number of B cells in lupus mice. There was no effect on the number of aortic cells in non lupus mice. The localization of CD68+ macrophages and CD11c+ dendritic cells in lupus mice was basically the same. A large number of IgG were deposited at the root of the aortic valve, and the B cells were also gathered at the IgG deposition position. The IgG deposition in lupus mice increased and increased. Dense, high fat feed led to the increase of IgG deposition. Hydroxychloroquine significantly reduced the IgG deposition in aortic plaque in apoE-/- mice. The serum IgG of lupus mice was higher than non lupus mice, the serum IgG of mice fed with high fat diet was lower than that of normal diet mice, and IgG in apoE-/- mice was less than.HCQ in C57BL/6 mice. The product and serum IgG content showed low negative correlation with.7. lupus, and the susceptible genotype of arteriosclerosis in mice resulted in the increase of spleen index. High fat diet, hydroxychloroquine had no effect on spleen index. The spleen lymphocyte of lupus mice decreased, and high fat diet also resulted in the decrease of spleen lymphocyte. Hydroxychloroquine had no effect on the proportion of spleen B cells in mice. The proportion of T cells in the spleen of lupus mice was increased by chloroquine. The proportion of spleen T cells in non lupus mice was not affected. The spleen CD11c+ cells in lupus mice increased and the high fat feed led to the decrease of spleen CD11c+ cells. The proportion of CD11c+ cells in spleen of mice was not significantly affected by hydroxychloroquine. The spleen CD11b+ cells in lupus mice were not significantly changed, and hydroxychloroquine was used to the spleen CD11b+. No effect of cell ratio on urinary protein of.8. lupus mice was higher than that of non lupus mice,.HCQ did not affect the level of urine protein in apoE-/- mice, but the level of IFN- alpha in serum of C57BL/6 mice was lower than that of apoE-/- mice, and there was no statistical significance. Conclusion 1. apoE-/-, C57BL/6 mice can successfully induce lupus disease through abdominal cavity injection of pristane. Models, 2. apoE-/- mice were prone to atherosclerotic atherosclerotic plaques, C57BL/6 mice did not have obvious plaque in.3. lupus mice and the cardiovascular traditional risk factors (total cholesterol) decreased, but the inflammatory reaction in the aorta of lupus mice was abnormally active (dendritic cells, macrophages increased, B thin). At the same time, the immune state of the spleen was decreased, the immune state of the spleen was decreased, the increase of dendritic cells, the decrease of serum albumin, the increase of serum albumin, and the increase of IgG..5. hydroxychloroquine could reduce the dsDNA antibody, which could reduce the unmarked effect of.6. hydroxychloroquine on the blood lipid, and could partly reverse the atherosclerotic artery atherosclerosis caused by lupus. Abnormal atherosclerotic plaque composition and abnormal proportion of spleen cells.7. high fat diet can also increase serum IFN- alpha in atherosclerotic.8. lupus mice by increasing blood lipid and aggravating immune system abnormalities.
【學位授予單位】:北京協(xié)和醫(yī)學院
【學位級別】:博士
【學位授予年份】:2016
【分類號】:R593.241;R543.5;R-332
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