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洋甘菊总黄酮对高脂血症模型小鼠脂质代谢的影响及机制 Δ
兰 卫(新疆医科大学中医学院,乌鲁木齐 830017)
*
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2021)22-2706-07
DOI 10.6039/j.issn.1001-0408.2021.22.04
摘 要 目的:研究洋甘菊总黄酮对高脂血症模型小鼠脂质代谢的影响及潜在机制。方法:将 30 只雄性载脂蛋白 E 基因缺陷
-/-
(C57BL/6J-ApoE )小鼠随机分成模型组、阳性对照组(非诺贝特30 mg/kg)和洋甘菊总黄酮低、中、高剂量组(88、176、352 mg/kg),
每组6只;另取6只雄性C57BL/6J小鼠作为正常对照组。正常对照组小鼠用普通饲料喂养,其余各组小鼠均用高脂饲料喂养8周
以复制高脂血症模型。造模同时,各给药组小鼠灌胃相应药液(均以1%羧甲基纤维素钠溶液为溶剂),正常对照组和模型组小鼠
灌胃1%羧甲基纤维素钠溶液,每次灌胃200 μL,每天1次,连续8周。分别于给药前和给药8周后称定各组小鼠的体质量,测定末
次给药后小鼠血清中总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、天冬氨酸转
氨酶(AST)、丙氨酸转氨酶(ALT)含量,肝组织中超氧化物歧化酶(SOD)、丙二醛(MDA)含量以及过氧化物酶体增殖物激活受体α
(PPARα)、肉毒碱棕榈酰基转移酶1A(CPT1A)、过氧化物酶酰基辅酶A氧化酶1(ACOX1)蛋白的表达水平,并观察肝组织的病理
改变。结果:与给药前比较,各组小鼠给药8周后的体质量均有升高趋势。与正常对照组比较,模型组小鼠给药8周后的体质量和
血清中TC、TG、LDL-C、AST、ALT含量以及肝组织中MDA含量均显著升高(P<0.05或P<0.01),血清中HDL-C含量和肝组织中
SOD含量以及PPARα、CPT1A、ACOX1蛋白的表达水平均显著降低(P<0.05或P<0.01),肝组织结构紊乱并可见大小不一的圆
形脂肪空泡,细胞质中可见大小不等的脂滴。与模型组比较,洋甘菊总黄酮各剂量组和阳性对照组小鼠给药8周后的体质量(除
洋甘菊总黄酮低剂量组外)和血清中TC、TG、LDL-C、AST、ALT含量以及肝组织中MDA(除洋甘菊总黄酮低、中剂量组外)含量均
显著降低(P<0.05或P<0.01),血清中HDL-C含量和肝组织中SOD含量以及PPARα、CPT1A(除洋甘菊总黄酮低、中剂量组外)、
ACOX1蛋白的表达水平均显著升高(P<0.05或P<0.01),肝组织结构较清晰,肝脏脂肪空泡有不同程度的改善,脂滴变少,其中
洋甘菊总黄酮高剂量组小鼠上述指标的改善效果最好。结论:洋甘菊总黄酮可预防C57BL/6J-ApoE -/- 小鼠高脂血症的发生,其机
制可能与上调PPARα表达、改善肝损伤和氧化应激损伤有关。
关键词 洋甘菊总黄酮;高脂血症;载脂蛋白E基因缺陷小鼠;脂质代谢;作用机制
Effects of Total Flavonoids from Chamomile on Lipid Metabolism of Hyperlipidemia Model Mice and Its
Mechanism
LAN Wei(College of Traditional Chinese Medicine,Xinjiang Medical University,Urumqi 830017,China)
ABSTRACT OBJECTIVE:To study the effects of total flavonoids from chamomile on lipid metabolism of hyperlipidemia model
mice and its potential mechanism. METHODS:Thirty male C57BL/6J-ApoE -/- mice were randomly divided into model group,
positive control group(fenofibrate 30 mg/kg)and chamomile total flavonoids low-dose,medium-dose and high-dose groups(88,
176,352 mg/kg),with 6 mice in each group. In addition,6 male C57BL/6J mice were used as normal control group. Mice in
normal control group were fed with ordinary diet,and mice in other groups were fed with high-fat diet for 8 weeks to replicate
hyperlipidemia model. At the time of making model,administration groups were given relevant liquid (using 1% sodium
carboxymethyl cellulose as solvent);normal control group and model group were given 1% sodium carboxymethyl cellulose
intragastrically,200 mL per gavage,once a day,for consecutive 8 weeks. The body weight of mice in each group was weighed
before medication and 8 weeks after medication. The serum contents of total cholesterol(TC),triacylglycerol(TG),low-density
lipoprotein cholesterol (LDL-C),high-density lipoprotein cholesterol (HDL-C),aspartate aminotransferase (AST) and alanine
aminotransferase (ALT) in mice were detected after last administration;the contents of superoxide dismutase (SOD) and
malondialdehyde(MDA)as well as the protein expressions of peroxisome proliferator-activated receptor α(PPARα),carnitine
palmityl transferase 1A(CPT1A)and peroxase acyl-CoA oxidase 1(ACOX1)in liver tissue were determined. The pathological
changes in liver tissue were observed. RESULTS:Compared with before medication,the body weight of each group showed an
increasing trend after 8 weeks of medication. Compared with
Δ 基金项目:国家自然科学基金资助项目(No.81960771);国家重 normal control group,body weight,the contents of TC,TG,
点研发计划项目(No.2017YFC1703902-3);新疆维吾尔自治区自然科
LDL-C,AST and ALT in serum and MDA content in liver
学基金资助项目(No.2018D01C160)
*教授,博士生导师。研究方向:中药药理学。E-mail:lan- tissue of mice in model group were significantly increased
wei516@sina.com after 8 weeks of medication (P<0.05 or P<0.01). The
·2706 · China Pharmacy 2021 Vol. 32 No. 22 中国药房 2021年第32卷第22期