Determinants of buildup of the toxic dopamine metabolite DOPAL in Parkinson's disease.
Determinants of buildup of the toxic dopamine metabolite DOPAL in Parkinson's disease.
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帕金森病中有毒多巴胺代谢物 DOPAL 积累的决定因素。
DOI:
10.1111/jnc.12345
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发表时间:
2013-09
影响因子:
4.7
通讯作者:
Sharabi Y
中科院分区:
文献类型:
--
作者:
Goldstein DS;Sullivan P;Holmes C;Miller GW;Alter S;Strong R;Mash DC;Kopin IJ;Sharabi Y
Intra-neuronal metabolism of dopamine (DA) begins with production of 3,4-dihydroxyphenylacetaldehyde (DOPAL), which is toxic. According to the ‘catecholaldehyde hypothesis,’ DOPAL destroys nigrostriatal DA terminals and contributes to the profound putamen DA deficiency that characterizes Parkinson’s disease (PD). We tested the feasibility of using post-mortem patterns of putamen tissue catechols to examine contributions of altered activities of the type 2 vesicular monoamine transporter (VMAT2) and aldehyde dehydrogenase (ALDH) to the increased DOPAL levels found in PD. Theoretically, the DA : DOPA concentration ratio indicates vesicular uptake, and the 3,4-dihydroxyphenylacetic acid : DOPAL ratio indicates ALDH activity. We validated these indices in transgenic mice with very low vesicular uptake (VMAT2-Lo) or with knockouts of the genes encoding ALDH1A1 and ALDH2 (ALDH1A1,2 KO), applied these indices in PD putamen, and estimated the percent decreases in vesicular uptake and ALDH activity in PD. VMAT2-Lo mice had markedly decreased DA:DOPA (50 vs. 1377, p < 0.0001), and ALDH1A1,2 KO mice had decreased 3,4-dihydroxyphenylacetic acid:DOPAL (1.0 vs. 11.2, p < 0.0001). In PD putamen, vesicular uptake was estimated to be decreased by 89% and ALDH activity by 70%. Elevated DOPAL levels in PD putamen reflect a combination of decreased vesicular uptake of cytosolic DA and decreased DOPAL detoxification by ALDH.
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影响因子:
6.1
作者:
Galter, D;Buervenich, S;Olson, L
通讯作者:
Olson, L
DOI:
10.1016/s0169-328x(01)00120-6
发表时间:
2001-09-10
期刊:
MOLECULAR BRAIN RESEARCH
影响因子:
--
作者:
Li, SW;Lin, TS;Burke, WJ
通讯作者:
Burke, WJ
影响因子:
3.4
作者:
Burke, WJ;Li, SW;Zahm, DS
通讯作者:
Zahm, DS
DOI:
10.1073/pnas.88.7.2721
发表时间:
1991-04-01
影响因子:
11.1
作者:
GJEDDE, A;REITH, J;KUWABARA, H
通讯作者:
KUWABARA, H
影响因子:
--
作者:
DelleDonne, Anthony;Klos, Kevin J.;Dickson, Dennis W.
通讯作者:
Dickson, Dennis W.