Oligodendrocyte development and myelinogenesis are not impaired by high concentrations of phenylalanine or its metabolites.
Oligodendrocyte development and myelinogenesis are not impaired by high concentrations of phenylalanine or its metabolites.
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高浓度的苯丙氨酸或其代谢产物不会损害少突胶质细胞的发育和骨髓生成。
DOI:
10.1007/s10545-010-9052-3
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发表时间:
2010-04
影响因子:
4.2
通讯作者:
Bours, Vincent
中科院分区:
文献类型:
--
作者:
Schoemans, Renaud;Aigrot, Marie-Stephane;Wu, Chaohong;Maree, Raphael;Hong, Pengyu;Belachew, Shibeshi;Josse, Claire;Lubetzki, Catherine;Bours, Vincent
Phenylketonuria (PKU) is a metabolic genetic disease characterized by deficient phenylalanine hydroxylase (PAH) enzymatic activity. Brain hypomyelination has been reported in untreated patients, but its mechanism remains unclear. We therefore investigated the influence of phenylalanine (Phe), phenylpyruvate (PP), and phenylacetate (PA) on oligodendrocytes. We fisrt showed in a mouse model of PKU that the number of oligodendrocytes is not different in corpus callosum sections from adult mutants or from control brains. Then, using enriched oligodendroglial cultures, we detected no cytotoxic effect of high concentrations of Phe, PP, or PA. Finally, we analyzed the impact of Phe, PP, and PA on the myelination process in myelinating cocultures using both an in vitro index of myelination, based on activation of the myelin basic protein (MBP) promoter, and the direct quantification of myelin sheaths by both optical measurement and a bioinformatics method. None of these parameters was affected by the increased levels of Phe or its derivatives. Taken together, our data demonstrate that high levels of Phe, such as in PKU, are unlikely to directly induce brain hypomyelination, suggesting involvement of alternative mechanisms in this myelination defect.
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影响因子:
3.9
作者:
Pey, AL;Desviat, LR;Pérez, B
通讯作者:
Pérez, B
DOI:
10.1083/jcb.85.3.890
发表时间:
1980-06
期刊:
The Journal of cell biology
影响因子:
--
作者:
McCarthy KD;de Vellis J
通讯作者:
de Vellis J
影响因子:
4.2
作者:
Matalon, R.;Michals-Matalon, K.;Guttler, F.
通讯作者:
Guttler, F.
DOI:
10.1097/00005072-199607000-00005
发表时间:
1996-07-01
影响因子:
3.2
作者:
Dyer, CA;Kendler, A;Levy, HL
通讯作者:
Levy, HL
影响因子:
3.6
作者:
Huttenlocher, PR
通讯作者:
Huttenlocher, PR