首页> 外文期刊>Neurological Research: An Interdisciplinary Quarterly Journal >An experimental study on intracerebroventricular transplantation of human amniotic epithelial cells in a rat model of Parkinson's disease.
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An experimental study on intracerebroventricular transplantation of human amniotic epithelial cells in a rat model of Parkinson's disease.

机译:帕金森病大鼠模型中人羊膜上皮细胞脑室内移植的实验研究。

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OBJECTIVES: Human amniotic epithelial (HAE) cells are formed from amnioblasts, separated from the epiblast at about the eighth day after fertilization. In the present study, we attempt to investigate the effects of intracerebroventricular transplantation of HAE cells on Parkinson's disease (PD) rats. METHODS: A PD rat model was induced by 6-OHDA injections. Then the rats were transplanted intracerebroventricularly with HAE cells. Apomorphin-induced turns were used to assess the neurobehavioral deficit in rats. Immunofluorescence cytochemistry was used to track the survival of HAE cells. Tyrosinehydroxylase (TH) immunohistochemistry was used to determine the density of TH-positive cells in rat substantia nigra and the differentiation of HAE cells. High performance liquid chromatography (HPLC) was used to measure the levels of dopamine (DA) and its metabolites 3, 4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in rat striatum. HVA levels in the cerebrospinal fluid of rats were also determined by HPLC. RESULTS: The results showed that transplanted HAE cells can survive for at least 10 weeks and differentiate into TH-positive cells in PD rats. The grafts significantly ameliorated apomorphine-induced turns in PD rats. TH immunohistochemistry showed that HAE cells attenuated the loss of TH-positive cells in rat substantia nigra. In addition, HAE cells prevented the fall of DA and its metabolites DOPAC and HVA in PD rats. Increased HVA levels in the cerebrospinal fluid of PD rats were also observed. CONCLUSION: These results demonstrate that HAE cells have beneficial effect on 6-OHDA-induced PD rats, which may be due to the neurotrophic factors secrete by HAE cells.
机译:目的:人羊膜上皮细胞(HAE)由成羊细胞形成,在受精后约八天与成纤维细胞分离。在本研究中,我们尝试研究HAE细胞的脑室内移植对帕金森氏病(PD)大鼠的影响。方法:通过6-OHDA注射建立PD大鼠模型。然后将大鼠脑室内植入HAE细胞。阿朴吗啡诱导的转弯用于评估大鼠的神经行为缺陷。免疫荧光细胞化学用于追踪HAE细胞的存活。酪氨酸羟化酶(TH)免疫组化用于确定大鼠黑质中TH阳性细胞的密度和HAE细胞的分化。高效液相色谱法(HPLC)用于测量大鼠纹状体中多巴胺(DA)及其代谢物3、4-二羟基苯基乙酸(DOPAC)和高香草酸(HVA)的水平。还通过HPLC测定大鼠脑脊液中的HVA水平。结果:移植的HAE细胞可以存活至少10周,并在PD大鼠中分化为TH阳性细胞。移植物显着改善了阿朴吗啡诱导的PD大鼠转弯。 TH免疫组织化学显示,HAE细胞减弱了大鼠黑质中TH阳性细胞的损失。此外,HAE细胞可防止PD大鼠的DA及其代谢产物DOPAC和HVA下降。还观察到PD大鼠脑脊髓液中HVA水平升高。结论:这些结果表明HAE细胞对6-OHDA诱导的PD大鼠具有有益的作用,这可能是由于HAE细胞分泌的神经营养因子所致。

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