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Degree of dopaminergic degeneration measured by ^(99m)Tc-TRODAT-1 SPECT/CT imaging

neural regeneration Research 2018年第7期13卷 1281-1287页

作者： Ling Lin Jing Ye Han Zhang Zhong-Fu Han Zhi-Hong Zheng Fujian Provincial Key Laboratory of Neuroglia and Disease Fujian Medical University Department of Biochemistry and Molecular Biology Fujian Medical University

To prevent and treat Parkinson＇s disease in its early stages,it is essential to be able to detect the degree of early dopaminergic neuron *** transporters（DAT） in the striatum regulate synaptic dopamine levels,and striatal ^99mTc-TRODAT-1 single-photon emission computed tomography（-SPECT） imaging is a marker for presynaptic neuronal ***,the association between the degree of dopaminergic degeneration and in vivo ^99mTc-TRODAT-1 SPECT imaging is ***,this study investigated the association between the degree of 6-hydroxydopamine（6-OHDA）-induced dopaminergic degeneration and DAT imaging using^99mTc-TRODAT-1 SPECT in *** degrees of nigrostriatal dopamine depletion were generated by injecting different doses of 6-OHDA（2,4,and 8 μg） into the right medial forebrain *** degree of nigrostriatal dopaminergic neuron degeneration was assessed by rotational behavior and immunohistochemical *** results showed that striatal ^99mTc-TRODAT-1 binding was significantly diminished both in the ipsilateral and the contralateral sides in the 4 and 8 μg 6-OHDA groups,and that DAT ^99mTc-TRODAT-1 binding in the ipsilateral striatum showed a high correlation to apomorphine-induced rotations at 8 weeks post-lesion（r = –0.887,P 〈 0.01）.There were significant correlations between DAT ^99mTc-TRODAT-1 binding in the ipsilateral striatum and the amount of tyrosine hydroxylase immunoreactive neurons in the ipsilateral substantia nigra in the 2,4,and 8 μg 6-OHDA groups at 8 weeks post-lesion（r = 0.899,P 〈 0.01）.These findings indicate that striatal DAT imaging using ^99mTc-TRODAT-1 is a useful technique for evaluating the severity of dopaminergic degeneration.

关键词： nerve regeneration Parkinson's disease 6-hydroxydopamine dopaminergic degeneration dopamine transporter ^99mTc-TRODAT-1 tyrosine hydroxylase substantia nigra striatum single-photon emission computed tomography apomorphine neurodegeneration neural regeneration

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