We report a case of Familial hypercholesterolemia (FH) with two mutations in low density lipoprotein receptor (LDLR) gene and speculate the correlation between the newly discovered mutation type of LDLR gene and FH. W...We report a case of Familial hypercholesterolemia (FH) with two mutations in low density lipoprotein receptor (LDLR) gene and speculate the correlation between the newly discovered mutation type of LDLR gene and FH. We collected and analyzed the clinical data of the proband in the case and her immediate family members, and detected the LDLR, Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK-9) and Apolipoprotein B (Apo B) gene in the peripheral blood of all the participants. We found that the curative effect of the patient is limited, but no obvious complication was detected. Genetic testing results pointed out that there were two mutations in the patient’s LDLR gene. One was p.W483* mutation in exon 10 (c. 1448 G > A), another was p.T534I mutation in exon 11 (c. 1601 C > T). The p. W483* mutation in exon 10 was detected in the father and sister, additionally p. T534I mutation in exon 11 was detected in the mother. Both the two LDLR gene mutations are inherited from her parents. We hypothesize that the patient in this case was a complex heterozygote. The newly discovered mutation gene (T534I) may be one of the important causes of dyslipidemia in patients, and its adverse effects are more serious than W483* which have been reported. Also, we predict that the T534I mutation will not cause serious early onset of cardiovascular complications.展开更多
目的探讨肝X受体(liver X receptor,LXR)激动剂T0901317对高脂饲养ApoE基因敲除(apolipoprotein E gene knockout,ApoE-/-)小鼠在动脉粥样硬化病变形成的早期动脉壁内C-反应蛋白(CRP)和CD40配体(CD40L)表达及平滑肌细胞含量的影响。方法...目的探讨肝X受体(liver X receptor,LXR)激动剂T0901317对高脂饲养ApoE基因敲除(apolipoprotein E gene knockout,ApoE-/-)小鼠在动脉粥样硬化病变形成的早期动脉壁内C-反应蛋白(CRP)和CD40配体(CD40L)表达及平滑肌细胞含量的影响。方法8周龄雄性ApoE-/-小鼠12只,按随机数字表法分入LXR激动剂T0901317组和二甲基亚砜(DMSO)溶剂对照组,每组6只。均给予高脂饲养8周,在高脂饲养的后4周,分别给予LXR激动剂T090131720mg·kg-1·d-1或相当剂量的DMSO腹腔注射。麻醉处死小鼠后,取小鼠主动脉,以石蜡包埋,行主动脉根部连续切片,采用免疫组化法检测主动脉壁内CRP、CD40L和平滑肌细胞α-actin的表达,以Image Pro Plus 6.0软件进行图像分析。结果LXR激动剂组动脉壁CRP表达水平较对照组明显减少(P<0.05),LXR激动剂组动脉壁CD40L表达水平较对照组明显减少(P<0.05),动脉粥样硬化斑块内平滑肌细胞α-actin表达水平与对照组比较没有统计学差异(P>0.05)。结论LXR激动剂可能通过抑制ApoE-/-小鼠动脉壁中CRP和CD40L的表达,减轻血管壁的炎症反应,从而发挥抗动脉粥样硬化形成的作用。展开更多
文摘We report a case of Familial hypercholesterolemia (FH) with two mutations in low density lipoprotein receptor (LDLR) gene and speculate the correlation between the newly discovered mutation type of LDLR gene and FH. We collected and analyzed the clinical data of the proband in the case and her immediate family members, and detected the LDLR, Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK-9) and Apolipoprotein B (Apo B) gene in the peripheral blood of all the participants. We found that the curative effect of the patient is limited, but no obvious complication was detected. Genetic testing results pointed out that there were two mutations in the patient’s LDLR gene. One was p.W483* mutation in exon 10 (c. 1448 G > A), another was p.T534I mutation in exon 11 (c. 1601 C > T). The p. W483* mutation in exon 10 was detected in the father and sister, additionally p. T534I mutation in exon 11 was detected in the mother. Both the two LDLR gene mutations are inherited from her parents. We hypothesize that the patient in this case was a complex heterozygote. The newly discovered mutation gene (T534I) may be one of the important causes of dyslipidemia in patients, and its adverse effects are more serious than W483* which have been reported. Also, we predict that the T534I mutation will not cause serious early onset of cardiovascular complications.
文摘目的探讨肝X受体(liver X receptor,LXR)激动剂T0901317对高脂饲养ApoE基因敲除(apolipoprotein E gene knockout,ApoE-/-)小鼠在动脉粥样硬化病变形成的早期动脉壁内C-反应蛋白(CRP)和CD40配体(CD40L)表达及平滑肌细胞含量的影响。方法8周龄雄性ApoE-/-小鼠12只,按随机数字表法分入LXR激动剂T0901317组和二甲基亚砜(DMSO)溶剂对照组,每组6只。均给予高脂饲养8周,在高脂饲养的后4周,分别给予LXR激动剂T090131720mg·kg-1·d-1或相当剂量的DMSO腹腔注射。麻醉处死小鼠后,取小鼠主动脉,以石蜡包埋,行主动脉根部连续切片,采用免疫组化法检测主动脉壁内CRP、CD40L和平滑肌细胞α-actin的表达,以Image Pro Plus 6.0软件进行图像分析。结果LXR激动剂组动脉壁CRP表达水平较对照组明显减少(P<0.05),LXR激动剂组动脉壁CD40L表达水平较对照组明显减少(P<0.05),动脉粥样硬化斑块内平滑肌细胞α-actin表达水平与对照组比较没有统计学差异(P>0.05)。结论LXR激动剂可能通过抑制ApoE-/-小鼠动脉壁中CRP和CD40L的表达,减轻血管壁的炎症反应,从而发挥抗动脉粥样硬化形成的作用。
