1.湖南中医药大学第一附属医院,湖南省长沙市雨花区韶山中路95号,410007
2.湖南中医药大学
3.湖南省妇幼保健院
pengqinghua@hnucm.edu.cn
收稿:2025-09-18,
修回:2026-02-27,
纸质出版:2026-03-17
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欧晨,易肇兰,黄欣怡等.滋阴明目丸对视网膜色素变性模型小鼠自噬的影响[J].中医杂志,2026,67(06):669-676.
OU Chen,YI Zhaolan,HUANG Xinyi,et al.Effect of Ziyin Mingmu Pill (滋阴明目丸) on Autophagy in Retinal Pigmentosa Model Mice[J].Journal of Traditional Chinese Medicine,2026,67(06):669-676.
欧晨,易肇兰,黄欣怡等.滋阴明目丸对视网膜色素变性模型小鼠自噬的影响[J].中医杂志,2026,67(06):669-676. DOI: 10.13288/j.11-2166/r.2026.06.012.
OU Chen,YI Zhaolan,HUANG Xinyi,et al.Effect of Ziyin Mingmu Pill (滋阴明目丸) on Autophagy in Retinal Pigmentosa Model Mice[J].Journal of Traditional Chinese Medicine,2026,67(06):669-676. DOI: 10.13288/j.11-2166/r.2026.06.012.
目的
2
探究滋阴明目丸治疗视网膜色素变性的作用机制。
方法
2
将48只rd10小鼠随机分为模型组、乐盯组、滋阴明目丸低剂量组、滋阴明目丸高剂量组,每组12只,另选取12只C57B
L/6小鼠作为空白组。滋阴明目丸低剂量组予4.5 g/(kg·d)滋阴明目丸溶液灌胃,滋阴明目丸高剂量组予9 g/(kg·d)滋阴明目丸溶液灌胃,乐盯组予0.15 g/(kg·d)乐盯软胶囊溶液灌胃,每日1次,连续28天。干预结束后,采用光学相干断层扫描、眼底照相观察小鼠视网膜形态,透射电镜观察视网膜组织超微结构,Western Blot法检测视网膜组织雷帕霉素靶蛋白(mTOR)、磷脂酰肌醇3-激酶(PI3K)、苄氯素1(Beclin1)、自噬相关蛋白5(ATG5)、微管相关蛋白1轻链3(LC3)蛋白表达,实时荧光定量PCR法检测视网膜组织
mTOR、PI3K、Beclin1、ATG5、LC3
mRNA表达。
结果
2
与空白组比较,模型组小鼠视网膜形态结构紊乱,分层不清,视网膜厚度下降(
P
<0.01);眼底呈青灰色,色泽分布不均,可见大量色素沉着;视网膜线粒体结构破坏,可见自噬小体;mTOR、PI3K蛋白及mRNA表达降低,Beclin1、ATG5、LC3Ⅱ/LC3Ⅰ蛋白及mRNA表达升高(
P
<0.01)。与模型组比较,乐盯组和滋阴明目丸低、高剂量组小鼠视网膜形态结构、眼底状况均有不同程度改善,视网膜厚度增加(
P
<0.01);线粒体破坏程度减轻,自噬小体数量减少;滋阴明目丸低、高剂量组小鼠视网膜组织mTOR、PI3K蛋白及mRNA表达升高,Beclin1、ATG5、LC3Ⅱ/LC3Ⅰ蛋白及mRNA表达降低(
P
<0.05或
P
<0.01)。
结论
2
滋阴明目丸可以通过抑制自噬反应以改善视网膜色素变性小鼠的视网膜组织形态结构,延缓视网膜病变进展,进而保护视功能。
Objective
2
To investigate the mechanism of
Ziyin Mingmu Pills
(滋阴明目丸, ZMP) in treatment of retinitis pigmentosa.
Methods
2
Forty-eight rd10 mice were randomly divided into four groups, a model group, a Leding group, a low-dose and a high-dose ZMP group, with 12 mice in each group. Twelve C57BL/6 mice served as blank control group. The low-dose ZMP group was administered with 4.5 g/(kg·d) of ZMP solution by gavage, while the high-dose ZMP group received 9 g/(kg·d) of ZMP solution, and the Leding group received 0.15 g/(kg·d) of Leding soft capsule solution by gavage, once daily for 28 consecutive days. After the intervention, retinal morphology was assessed using optical coherence tomography and fundus photography. Transmission electron microscopy was used to observe autophagy in retinal tissue. Western Blot was used to detect the expression of mammalian target of rapamycin (mTOR), phosphoinositide 3-kinase (PI3K), Beclin1, autophagy-related protein 5 (ATG5), and microtubule-associated protein 1 light chain 3 (LC3) proteins in retinal tis
sues. Real-time fluorescence quantitative PCR was employed to measure the mRNA expression of
mTOR
,
PI3K
,
Beclin1
,
ATG5
, and
LC3
in retinal tissues.
Results
2
Compared with the blank control group, the model group showed disordered retinal structure, unclear layering, and thinner retinal thickness (
P
<0.01). The fundus appeared bluish-grey with uneven color distribution and extensive pigmentation. Retinal mitochondrial structures were damaged, and autophagic vesicles were visible. The protein and mRNA expression levels of mTOR and PI3K decreased, while those of Beclin1, ATG5, and LC3Ⅱ/LC3Ⅰ increased (
P
<0.01). Compared with the model group, the Leding group and the low-dose and high-dose ZMP groups showed varying degrees of improvement in retinal morphology and fundus condition, along with increased retinal thickness (
P
<0.01). Mitochondrial damage was reduced, and the number of autophagosomes decreased. In the low-dose and high-dose ZMP groups, the protein and mRNA expression levels of mTOR and PI3K increased, while those of Beclin1, ATG5 and LC3Ⅱ/LC3Ⅰ decreased (
P
<0.05 or
P
<0.01).
Conclusion
2
ZMP can improve tretinal tissue morphology and structure in retinitis pigmentosa model mice by inhibiting autophagy, thereby delaying the progression of retinal degeneration and protecting vision function.
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