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1.重庆医科大学附属儿童医院新生儿科、国家儿童健康与疾病临床医学研究中心、儿童发育疾病研究教育部重点实验室、 儿童感染与免疫罕见病重庆市重点实验室,重庆 400010
2.云南省文山壮族苗族自治州人民医院新生儿科,文山 663000
易烜宇,Email:yixuanyu1226@163.com, 研究方向:新生儿脑损伤及神经发育的研究和治疗。
史 源,Email:petshi530@163.com。
收稿:2024-01-08,
修回:2024-02-21,
录用:2024-02-22,
纸质出版:2024-03-28
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易烜宇,贺雨,艾青,等.丰富环境促进缺氧缺血性脑损伤幼鼠髓鞘发育并改善神经功能[J].重庆医科大学学报,2024,49(3):246-253.
Yi Xuanyu,He Yu,Ai Qing,et al.The role of environmental enrichment in promoting myelin formation and neural function in hypoxic-ischemic brain injury[J].Journal of Chongqing Medical University,2024,49(3):246-253.
易烜宇,贺雨,艾青,等.丰富环境促进缺氧缺血性脑损伤幼鼠髓鞘发育并改善神经功能[J].重庆医科大学学报,2024,49(3):246-253. DOI: 10.13406/j.cnki.cyxb.003459.
Yi Xuanyu,He Yu,Ai Qing,et al.The role of environmental enrichment in promoting myelin formation and neural function in hypoxic-ischemic brain injury[J].Journal of Chongqing Medical University,2024,49(3):246-253. DOI: 10.13406/j.cnki.cyxb.003459.
目的
2
探索丰富环境(environmental enrichment,EE)干预对缺氧缺血性脑损伤(hypoxic-ischemic brain damage,HIBD)幼鼠神经功能、脑室旁白质及海马髓鞘相关蛋白表达的影响。
方法
2
取7 d SD大鼠随机分为假手术组(Sham组)、模型组+标准环境组(HIBD+SE组)及模型组+丰富环境组(HIBD+EE组),采用Rice-Vannucci法制备HIBD模型。Sham组及HIBD+SE组不予任何干预饲养于标准环境中,HIBD+EE组于术后8 d至术后18 d予以丰富环境干预处理。术后18 d采用Morris水迷宫定位航行实验测定平台区穿梭次数,采用Western blot检测脑室旁白质及海马区髓鞘生成相关蛋白尿苷二磷酸糖基转移酶8(recombinant UDP glycosyltransferase 8,UGT8)、少突胶质细胞转录因子2(oligodendrocyte transcription factor 2,OLIG2)的表达,采用RT-qPCR检测脑室旁白质及海马区UGT8、OLIG2、糖脂转运蛋白(glycolipid transfer protein,GLTP)、髓鞘转录因子(myelin regulatory factor Gene,MYRF)的表达水平,采用免疫组化法检测神经元核(neuronal nuclei antigen,NeuN)表达水平,采用免疫荧光检测胼胝体髓鞘标志(myelin basic protein,MBP)表达水平。
结果
2
术后18 d,与HIBD+SE组比较,HIBD+EE组穿越平台次数增多(
P
<
0.01),HIBD+EE组较HIBD+SE组脑室旁白质及海马区UGT8 mRNA及蛋白表达升高(
P
<
0.05),脑室周围白质及海马区OLIG2、GLTP、MYRF mRNA表达升高(
P
<
0.05),海马CA1区NeuN表达水平高于HIBD+SE组(
P
<
0.05),胼胝体MBP平均荧光强度高于HIBD+SE组(
P
<
0.05)。
结论
2
丰富环境能促进缺氧缺血性脑损伤新生大鼠少突胶质细胞谱系分化、髓鞘发育,改善学习记忆能力,可能与上调脑室周围白质及海马区UGT8蛋白表达,增加神经元分化成熟细胞数量有关。
Objective
2
To explore the effects of environmental enrichment(EE) on neural function,myelin-related protein expression of periventricular white matter and hippocampus in rats with hypoxic-ischemic brain injury(HIBD).
Method
2
Seven-day-old SD rats were randomly divided into sham surgery group,model+standard environment group(HIBD+SE group) and model + environmental enrichment group(HIBD+EE group),and the HIBD model was established with the Rice-Vannucci method. The sham surgery group and the standard environment group were raised in the standard environment without any intervention,and the environmental enrichment group was treated with enriched environment from 8 to 18 days after surgery. At day18 after the surgery,Morris water maze was used to determine the escape latency of finding the hidden platform. Western blot was used to detect the expression of UGT8,a myelination-related protein,in periventricular white matter and hippocampus,and expression of oligodendrocyte differentiation gene OLIG2. RT-qPCR was used to detect the mRNA expression levels of OLIG2、GLTP、MYRF、UGT8 in periventricular white matter and hippocampus. Immunohistochemistry was used to detect the expression levels of NeuN,and immunofluorescence was used to detect the expression of myelin basic protein(MBP) in the corpus callosum.
Result
2
At 18 days after surgery,compared with HIBD+SE group,platform crossing times of the HIBD+EE group increased(
P
<
0.01). The HIBD+EE group showed higher expression of UGT8 mRNA and protein in the periventricular white matter and hippocampus compared to HIBD+SE group(
P
<
0.05). The expression of OLIG2,GLTP,MYRF mRNA in the periventricular white matter and hippocampus increased(
P
<
0.05),and the expression of NeuN in CA1 region was higher than that of HIBD+SE group(
P
<
0.01),the fluorescent intensity of MBP in corpus callosum region was higher than that in standard environment group(
P
<
0.05).
Conclusion
2
Environmental enrichment promotes the differentiation of oligodendrocyte lineages and myelin development in neonatal rats with HIBD,and improves learning and memory ability,which may be related to up-regulating UGT8 protein expression in periventricular white matter and hippocampus and increasing the number of neuronal mature cells.
Min YJ , Ling EG , Li F . Immunomodulatory mechanism and potential therapies for perinatal hypoxic-ischemic brain damage [J ] . Front Pharmacol , 2020 , 11 : 580428 .
Zhao J , He L , Yin LL . lncRNA NEAT1 binds to miR-339-5p to increase HOXA1 and alleviate ischemic brain damage in neonatal mice [J ] . Mol Ther Nucleic Acids , 2020 , 20 : 117 - 127 .
Liu ZX , Yan MB , Liang YJ , et al . Nucleoporin Seh1 interacts with Olig2/Brd7 to promote oligodendrocyte differentiation and myelination [J ] . Neuron , 2019 , 102 ( 3 ): 587 - 601 .
Ismail TR , Yap CG , Naidu R , et al . Enrichment protocol for rat models [J ] . Curr Protoc , 2021 , 1 ( 6 ): e152 .
Kempermann G . Environmental enrichment,new neurons and the neurobiology of individuality [J ] . Nat Rev Neurosci , 2019 , 20 ( 4 ): 235 - 245 .
Thamizhoviya G , Vanisree AJ . Enriched environment enhances the myelin regulatory factor by mTOR signaling and protects the myelin membrane against oxidative damage in rats exposed to chronic immobilization stress [J ] . Neurochem Res , 2021 , 46 ( 12 ): 3314 - 3324 .
3rd Rice JE , Vannucci RC , Brierley JB . The influence of immaturity on hypoxic-ischemic brain damage in the rat [J ] . Ann Neurol , 1981 , 9 ( 2 ): 131 - 141 .
Bieber M , Gronewold J , Scharf AC , et al . Validity and reliability of neurological scores in mice exposed to middle cerebral artery occlusion [J ] . Stroke , 2019 , 50 ( 10 ): 2875 - 2882 .
Xie Y , Zhang XH , Xu PF , et al . Aberrant oligodendroglial LDL receptor orchestrates demyelination in chronic cerebral ischemia [J ] . J Clin Invest , 2021 , 131 ( 1 ): e128114 .
Schneider J , Miller SP . Preterm brain Injury:white matter injury [J ] . Handb Clin Neurol , 2019 , 162 : 155 - 172 .
Harlow HF , Suomi SJ . Nature of love:simplified [J ] . Am Psychol , 1970 , 25 ( 2 ): 161 - 168 .
Ohline SM , Abraham WC . Environmental enrichment effects on synaptic and cellular physiology of hippocampal neurons [J ] . Neuropharmacology , 2019 , 145 : 3 - 12 .
Jin XH , Li T , Zhang LN , et al . Environmental enrichment improves spatial learning and memory in vascular dementia rats with activation of Wnt/β-catenin signal pathway [J ] . Med Sci Monit , 2017 , 23 : 207 - 215 .
Gusel’nikova VV , Korzhevskiy DE . NeuN As a neuronal nuclear antigen and neuron differentiation marker [J ] . Acta Naturae , 2015 , 7 ( 2 ): 42 - 47 .
Wang HY , Hsieh PF , Huang DF , et al . RBFOX3/NeuN is Required for Hippocampal Circuit Balance and Function [J ] . Sci Rep , 2015 , 5 : 17383 .
Poulos AM , Thompson RF . Localization and characterization of an essential associative memory trace in the mammalian brain [J ] . Brain Res , 2015 , 1621 : 252 - 259 .
Cahoy JD , Emery B , Kaushal A , et al . A transcriptome database for astrocytes,neurons,and oligodendrocytes:a new resource for understanding brain development and function [J ] . J Neurosci , 2008 , 28 ( 1 ): 264 - 278 .
Duncan GJ , Plemel JR , Assinck P , et al . Myelin regulatory factor drives remyelination in multiple sclerosis [J ] . Acta Neuropathol , 2017 , 134 ( 3 ): 403 - 422 .
Emery B , Agalliu D , Cahoy JD , et al . Myelin gene regulatory factor is a critical transcriptional regulator required for CNS myelination [J ] . Cell , 2009 , 138 ( 1 ): 172 - 185 .
Davis DL , Mahawar U , Pope VS , et al . Dynamics of sphingolipids and the serine palmitoyltransferase complex in rat oligodendrocytes during myelination [J ] . J Lipid Res , 2020 , 61 ( 4 ): 505 - 522 .
Yang F , Guan YD , Feng X , et al . Proteomics of the corpus callosum to identify novel factors involved in hypomyelinated Niemann-Pick Type C disease mice [J ] . Mol Brain , 2019 , 12 ( 1 ): 17 .
Dupree JL , Suzuki K , Popko B . Galactolipids in the formation and function of the myelin sheath [J ] . Microsc Res Tech , 1998 , 41 ( 5 ): 431 - 440 .
Forbes TA , Goldstein EZ , Dupree JL , et al . Environmental enrichment ameliorates perinatal brain injury and promotes functional white matter recovery [J ] . Nat Commun , 2020 , 11 ( 1 ): 964 .
苑爱云 , 孙向峰 , 侯 梅 , 等 . 丰富环境对缺氧缺血脑损伤幼鼠空间记忆能力及海马区BDNF、自噬相关蛋白LC3表达的影响 [J ] . 中国康复医学杂志 , 2020 , 35 ( 11 ): 1296 - 1301 .
Yuan AY , Sun XF , Hou M , et al . Effects of environmental enrichment on the expressions of brain-derived neurotrophic factor and microtubule-associated protein 1 light chain 3 type in the hippocampus of immature rats with hypoxic-ischemic brain damage [J ] . Chin J Rehabil Med , 2020 , 35 ( 11 ): 1296 - 1301 .
宋名杨 , 朱路文 , 叶 涛 , 等 . 丰富环境对缺血缺氧脑损伤新生大鼠海马脑源性神经营养因子表达及细胞凋亡的影响 [J ] . 中国康复医学杂志 , 2017 , 32 ( 7 ): 750 - 755 .
Song MY , Zhu LW , Ye T , et al . Effects of enriched environment intervention on brain-derived neurotrophic factor expression and apoptosis in hippocampus of hypoxic ischemic brain damaged neonatal rats [J ] . Chin J Rehabil Med , 2017 , 32 ( 7 ): 750 - 755 .
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