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Autoradiographic study of dopamine transporter in rat Model of Parkinson” s disease with 125I-β-CIT

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Objective To evaluate the value of iaaging for dopamine transpter(DAT) wi th 125I- β-CIT. Methods The partial and complete lesioned rat models of hemiparkinsonism were rendered with 6- hydroxy-dopamine (6-OHDA). Each rat was injected intravenously with 1251-β-CIT containing 40 μ Ci. Coronal t issue sections were imaged by autoradiography. The levets of dopamine (DA)and its metabolites were measured by high performance 1iquid choromatography and electro-chemical detection (HPLC-ECD). The t yros i nc hydroxylase(Tll)-positive cells and fibres in substantia nigra and striatum of the rats were observed by immunohistochemieal staining. Results The radioactivities in the lesioned striatum of both partial and complete lesioned hemiparkinsonian rats were 2.67±0.25 and O. 98±0.29 respectively , and were singificantly decreased by.18% and 72% respectively, as compared with those of unlesioned side. The levels of DA in the lesioned striatum of partial and complete lesioned models were decreased by 39% and 98% respectively. The loss of TH-positive eells and fibres in the substantia nigra and striatum was found in the lesioned striatum of both partial and complete-lesioned models. Conclusion The imaging study of DAT may be helpful for the early diagnosis of Parkinson”s disease and for the monitor of the progression of this discaose;.

rat Model、substantia nigra、high performance、early diagnosis

8

R3 ;R5

2005-07-07(万方平台首次上网日期,不代表论文的发表时间)

共1页

91

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中国临床神经科学

1008-0678

31-1752/R

8

2000,8(z1)

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