天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (增刊2): 167-172.

• 开发研究 • 上一篇    下一篇

多糖提取物与叶黄素联合干预对青紫蓝兔视网膜光损伤保护作用研究

孟露曦1,2,4,5,6,余庆涛3,4,黄凤洪1,2,4,5,6,葛亚中3,4,金鑫3,4,唐健3,4,臧茜茜1,2,4,5,6,陈鹏1,2,4,5,6,邓乾春1,2,4,5,6*   

  1. 1中国农业科学院油料作物研究所;2油料脂质化学与营养湖北省重点实验室,武汉 430062;3无限极 (中国) 有限公司;4中国农业科学院油料作物研究所-无限极功能油脂联合实验室,广州 510623;5农业部油料加工重点实验室;6油料油脂加工技术国家地方联合工程实验室,武汉 430062
  • 出版日期:2019-01-18 发布日期:2019-01-18
  • 基金资助:

    公益性行业(农业)科研专项(201303072);中国农业科学院油料作物研究所所长基金( 1610172014006)

Polysaccharide Extracts and Lutein Ameliorate Light-induced Retinal Damage in Pigmented Rabbit

MENG Lu-xi1,2,4,5,6,YU Qing-tao3,4,HUANG Feng-hong1,2,4,5,6,GE Ya-zhong3,4,JIN Xin3,4,TANG Jian3,4,ZANG Xi-xi1,2,4,5,6,CHEN Peng1,2,4,5,6,DENG Qian-chun1,2,4,5,6*   

  1. 1Oil Crops Research Institute,Chinese Academy of Agricultural Sciences; 2Hubei Key Laboratory of Lipid Chemistry and Nutrition,Wuhan 430062,China; 3Infinitus (China) Co.,Ltd.,Guangzhou 510623,China; 4Joint Laboratory of functional lipids research-Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Infinitus; 5Key Laboratory of oil processing of Ministry of Agriculture; 6 Oil crops and Lipids Process Technology National & Local Joint Engineering Laboratory,Wuhan 430062,China
  • Online:2019-01-18 Published:2019-01-18

摘要: 为了研究天然多糖提取物和叶黄素协同对青紫蓝兔视网膜光损伤模型的保护作用,本实验通过光照造成青紫蓝兔视网膜光损伤,测定摄入低、中、高剂量的枸杞子和桑葚混合多糖提取物、叶黄素对青紫蓝兔视觉功能、组织学病理、Caspase3表达水平和抗氧化能力的影响。结果发现青紫蓝兔视网膜光损伤模型造模成功,与模型对照组相比,摄入中、高剂量受试物对视网膜明视反应、暗视反应有显著改善作用(P<0.05),外核层厚度分别增加25.78%和28.21%(P<0.05),Caspase3表达量下降84.08%和89.64(P<0.05),白细胞介素-1β和血管内皮生长因子显著降低(P<0.05)。说明中、高剂量组天然多糖提取物和叶黄素通过抑制视网膜视杆细胞、视锥细胞、感光细胞的损伤和凋亡,抑制视网膜炎症因子产生,改善视网膜保护视网膜的光损伤。

关键词: 多糖提取物, 叶黄素, 青紫蓝兔, 视网膜光损伤, 保护作用

Abstract: To explore the protective effects of polysaccharide extracts and lutein against light-induced retinal damage in pigmented rabbit.The visual functions,caspase3 expression and antioxidant activity were evaluated in different dose of polysaccharide extract and lutein-treated rabbit after light exposure.Results showed that light exposure induced significant retinal damage in Rabbit when compared with normal control.Polysaccharide extracts and lutein administration at middle and high dose levels evidently improved retinal response to light and dark adaptation,increased the outer nuclear layer (ONL) thickness by 25.78% and 28.21%,and suppressed the caspase 3 expression by 84.08% and 89.64% (P<0.05).Furthermore,polysaccharide extracts and lutein partially reversed light-overwhelmed retinal oxidative stress with decreased IL-1β and VEGF content (P<0.05).All indicated dietary middle and high-dose of polysaccharide extracts and lutein protected light-induced retinal damage through suppressing rods,cones and photoreceptor cell apoptosis and inhibition of inflammatory cytokine production.

Key words: polysaccharide extracts, lutein, pigmented rabbit, retinal light damage, protective effect

中图分类号:  R284.1 Q946.91