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6‐hydroxydopamine‐induced Parkinson's disease‐like degeneration generates acute microgliosis and astrogliosis in the nigrostriatal system but no bioluminescence imaging‐detectable alteration in adult neurogenesis
Author(s) -
Fricke Inga B.,
Viel Thomas,
Worlitzer Maik M.,
Collmann Franziska M.,
Vrachimis Alexis,
Faust Andreas,
Wachsmuth Lydia,
Faber Cornelius,
Dollé Frédéric,
Kuhlmann Michael T.,
Schäfers Klaus,
Hermann Sven,
Schwamborn Jens C.,
Jacobs Andreas H.
Publication year - 2016
Publication title -
european journal of neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.346
H-Index - 206
eISSN - 1460-9568
pISSN - 0953-816X
DOI - 10.1111/ejn.13232
Subject(s) - astrogliosis , hydroxydopamine , neuroscience , neurogenesis , bioluminescence imaging , parkinson's disease , bioluminescence , medicine , nigrostriatal pathway , pathology , biology , disease , substantia nigra , central nervous system , ecology , transfection , genetics , luciferase , cell culture
Parkinson's disease is a slowly progressing neurodegenerative disorder caused by loss of dopaminergic neurons in the substantia nigra (SN), leading to severe impairment in motor and non‐motor functions. Endogenous subventricular zone (SVZ) neural stem cells constantly give birth to new cells that might serve as a possible source for regeneration in the adult brain. However, neurodegeneration is accompanied by neuroinflammation and dopamine depletion, potentially compromising regeneration. We therefore employed in vivo imaging methods to study striatal deafferentation ( N ‐ω‐fluoropropyl‐2β‐carbomethoxy‐3β‐(4‐[ 123 I]iodophenyl)nortropane single photon emission computed tomography, DaTscan ™ ) and neuroinflammation in the SN and striatum ( N , N ‐diethyl‐2‐(2‐(4‐(2‐[ 18 F]fluoroethoxy)phenyl)‐5,7‐dimethylpyrazolo[1,5‐a]pyrimidin‐3‐yl)acetamide positron emission tomography, [ 18 F]DPA‐714 PET) in the intranigral 6‐hydroxydopamine Parkinson's disease mouse model. Additionally, we transduced cells in the SVZ with a lentivirus encoding firefly luciferase and followed migration of progenitor cells in the SVZ–olfactory bulb axis via bioluminescence imaging under disease and control conditions. We found that activation of microglia in the SN is an acute process accompanying the degeneration of dopaminergic cell bodies in the SN. Dopaminergic deafferentation of the striatum does not influence the generation of doublecortin‐positive neuroblasts in the SVZ, but generates chronic astrogliosis in the nigrostriatal system.