Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators.

Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators. Research Abstract Details 

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Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators. Abstract Text:

Wen Zhu,Wenjie Xie,Tianhong Pan,Pingyi Xu,Mati Fridkin,Hailin Zheng,Joseph Jankovic,Moussa B H Youdim,Weidong Le,Wen Zhu,Wenjie Xie,Tianhong Pan,Pingyi Xu,Mati Fridkin,Hailin Zheng,Joseph Jankovic,Moussa B H Youdim,Weidong Le,

Dysfunction of the ubiquitin-proteasome system (UPS) and accumulation of iron in substantia nigra (SN) are implicated in the pathogenesis of Parkinson's disease (PD). UPS dysfunction and iron misregulation may reinforce each other's contribution to the degeneration of dopamine (DA) neurons. In the present study, we use a new brain-permeable iron chelator, VK-28 [5-(4-(2-hydroxyethyl) piperazin-1-yl (methyl)-8-hydroxyquinoline], and its derivative M30 [5-(N-methyl-N-propargyaminomethyl)-8-hydroxyquinoline] in vivo to test their neuroprotective and neurorestorative properties against proteasome inhibitor (lactacystin) -induced nigrostriatal degeneration. Bilateral microinjections of lactacystin (1.25 microg/side) into the mouse medial forebrain bundle were performed. Administration of VK-28 (5 mg/kg, once a day) or M30 (5 mg/kg, once a day) was applied intraperitoneally 7 days before or after the lactacystin microinjection until the mice were sacrificed 28 days after microinjection. We found that VK-28 and M30 both significantly improved behavioral performances and attenuated lactacystin-induced DA neuron loss, proteasomal inhibition, iron accumulation, and microglial activation in SN. In addition, M30 restored the Bcl-2 level, which was suppressed after lactacystin injection. These findings suggest that brain-permeable iron chelators can improve DA neuron survival under UPS impairment. Furthermore, M30, a derivative of VK-28 and neuroprotective agent rasagiline, may serve as a better neuroprotective therapy for PD.

Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators. Publishing Authors By Initials

W Zhu,W Xie,T Pan,P Xu,M Fridkin,H Zheng,J Jankovic,MB Youdim,W Le,W Zhu,W Xie,T Pan,P Xu,M Fridkin,H Zheng,J Jankovic,MB Youdim,W Le,

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Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: The FASEB journal : official publication of the Fe

VOLUME: 21

Page Numbers: 3835-44

Journal Abbreviation: FASEB J.

ISSN: 1530-6860

DAY: 9

MONTH: 08

YEAR: 2007

Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators. Information

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LANGUAGE: eng

NlmUniqueID: 8804484

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Grant and Affiliation Information for Prevention and restoration of lactacystin-induced nigrostriatal dopamine neuron degeneration by novel brain-permeable iron chelators.

AFFILIATION: Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA.

Country: United States

AGENCY: United States NINDS

GRANT: NS 043567

ACRONYM: NS

MEDLINETA: FASEB J

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