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Although the 1\u2010methyl\u20104\u2010phenyl\u20101,2,3,6\u2010tetrahydropyridine (MPTP)\u2010treated mouse has been widely used for assessing neuroprotective agents for PD, the pathological processes resulting from MPTP exposure can vary greatly depending upon the MPTP administration protocol. This study assessed the degree to which the neuroprotective efficacy of particular agents may depend upon the MPTP administration protocol (i.e. acute vs. subacute toxin administration). Endpoints analysed were changes in tyrosine hydroxylase (TH) and NeuN cell numbers in the SNc, striatal DA and metabolite levels, and striatal TH<jats:sup>+<\/jats:sup>fiber density. The efficacy of putative neuroprotective agents [i.e. LIGA 20, nicotinamide and pramipexole (PPX)] varied depending upon the MPTP administration protocol. LIGA 20 spared striatal DA levels in both MPTP models, while nicotinamide was only effective in the acute toxin administration model and PPX was only effective in the subacute model. In both MPTP models, LIGA 20 and nicotinamide significantly spared DAergic neurons; PPX only spared DAergic neurons in the subacute model. Only acute MPTP\u2010treated mice that received nicotinamide had a significant sparing of striatal DAergic fibers. These results underscore the need to assess putative neuroprotective agents for PD in multiple animal models using multiple endpoints. This strategy may better identify compounds with broad neuroprotective\/neurorestorative profiles that may be more likely to be clinically effective.<\/jats:p>","DOI":"10.1111\/j.1460-9568.2006.05192.x","type":"journal-article","created":{"date-parts":[[2006,12,12]],"date-time":"2006-12-12T23:47:36Z","timestamp":1165967256000},"page":"3174-3182","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Neuroprotection in Parkinson models varies with toxin administration protocol"],"prefix":"10.1111","volume":"24","author":[{"given":"David W.","family":"Anderson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristin A.","family":"Bradbury","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay S.","family":"Schneider","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,12,11]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.1989.00520460028009"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.287.13.1653"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0361-9230(89)90157-3"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brainres.2004.11.040"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1212\/01.WNL.0000044047.58984.2F"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0006-8993(01)02466-0"},{"key":"e_1_2_7_8_1","first-page":"603","article-title":"Apoptosis in dopaminergic neurons of the human substantia nigra during normal aging","volume":"12","author":"Anglade P.","year":"1997","journal-title":"Histol. 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