Abstract：
:Chronic brain implants are accompanied by a tissue response that causes the loss of neurons in the vicinity of the implant and the formation of a glial scar that is also referred to as foreign body response. Despite immense progress in the field of brain-computer interface (BCI) research the biocompatibility of chronic brain implants remains a primary concern in device design. Excitotoxic overstimulation of NMDA-receptors by extrasynaptic glutamate plays a pivotal role in cell death in the acute phase of the tissue reaction. In this study, we examined the effect of the uncompetitive NMDA-receptor antagonist memantine locally applied during cannula implantation in the caudal forelimb area (CFA) of the motor cortex (M1) in Lister Hooded rats on their behavioural performance in a skilled reaching and a rung-ladder task as well as in the open field. Moreover, the distribution of neurons and glial cells in the vicinity of the implant were assessed. Memantine improved the performance in the behavioural paradigms compared to controls and increased the number of surviving neurons in the vicinity of the implant even above basal levels accompanied by a reduction in astrocytic scar formation directly around the implant with no effect on the microglia/macrophage activation two and six weeks after cannula implantation. These findings suggest that memantine is a potential therapeutic agent in the acute phase of chronic foreign body implantation in the motor cortex in terms of increasing the viability of neurons adjacent to the implant and of improving the behavioural outcome after surgery.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Hayn L,Koch Mdoi
10.1016/j.brainresbull.2015.08.001subject
Has Abstractpub_date
2015-08-01 00:00:00pages
54-68eissn
0361-9230issn
1873-2747pii
S0361-9230(15)30020-4journal_volume
117pub_type
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journal_title：Brain research bulletin
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pub_type： 杂志文章
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(80)90287-7
更新日期：1980-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：1993-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0361-9230(94)90021-3
更新日期：1994-01-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00228-2
更新日期：2000-02-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2021.01.012
更新日期：2021-01-25 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90060-6
更新日期：1983-07-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2009.02.007
更新日期：2009-05-29 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90124-2
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.02.028
更新日期：2008-07-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Brain research bulletin
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doi：10.1016/j.brainresbull.2006.02.015
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journal_title：Brain research bulletin
pub_type： 杂志文章
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更新日期：2020-09-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
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更新日期：2020-04-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.04.017
更新日期：2020-09-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2008.05.007
更新日期：2008-09-05 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2016.10.011
更新日期：2017-01-01 00:00:00
abstract：:Glaucoma is no longer viewed simply as elevated intraocular pressure (IOP) that damages the optic nerve. In addition to high IOP, evidence is rapidly accumulating that suggests damage to the optic nerve may be initiated or sustained by any number of factors including ischemia, excitotoxicity, neurotrophin insufficienc...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/S0361-9230(03)00074-1
更新日期：2004-02-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(97)00215-3
更新日期：1997-01-01 00:00:00
abstract：:The neuropathology of Alzheimer disease is characterized by senile plaques, neurofibrillary tangles and cell death. These hallmarks develop according to the differential vulnerability of brain networks, senile plaques accumulating preferentially in the associative cortical areas and neurofibrillary tangles in the ento...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2009.06.006
更新日期：2009-10-28 00:00:00
abstract：:Five polymorphisms (rs4713916, rs4713902, rs1360780, rs9296158 and rs3800373) of FKBP5 gene were analyzed in a case-control study comprising 423 Mexican individuals (146 individuals with suicide attempt and 277 controls). The SNP's were genotyped using the TaqMan-allelic assay. Genotype and allele frequencies were com...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.11.002
更新日期：2021-01-01 00:00:00
abstract：:The anticonvulsant drug Diazepam (DIA-2 mg/kg b. wt), the nitric oxide (NO) donor L-Arginine (L-Arg-2000 mg/kg b. wt) and the putative nitric oxide synthase (NOS) inhibitor N(G)-Nitro-L-Arginine methyl ester (L-NAME-50 mg/kg b. wt) were used to determine the role of endogenous NO on convulsions induced by picrotoxin (...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00011-8
更新日期：1999-03-01 00:00:00
