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2016 ; 6
(ä): 28649
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The AMPA receptor antagonist perampanel robustly rescues amyotrophic lateral
sclerosis (ALS) pathology in sporadic ALS model mice
#MMPMID27350567
Akamatsu M
; Yamashita T
; Hirose N
; Teramoto S
; Kwak S
Sci Rep
2016[Jun]; 6
(ä): 28649
PMID27350567
show ga
Both TDP-43 pathology and failure of RNA editing of AMPA receptor subunit GluA2,
are etiology-linked molecular abnormalities that concomitantly occur in the motor
neurons of the majority of patients with amyotrophic lateral sclerosis (ALS). AR2
mice, in which an RNA editing enzyme adenosine deaminase acting on RNA 2 (ADAR2)
is conditionally knocked out in the motor neurons, exhibit a progressive ALS
phenotype with TDP-43 pathology in the motor neurons through a Ca(2+)-permeable
AMPA receptor-mediated mechanism. Therefore, amelioration of the increased Ca(2+)
influx by AMPA receptor antagonists may be a potential ALS therapy. Here, we
showed that orally administered perampanel, a selective, non-competitive AMPA
receptor antagonist significantly prevented the progression of the ALS phenotype
and normalized the TDP-43 pathology-associated death of motor neurons in the AR2
mice. Given that perampanel is an approved anti-epileptic drug, perampanel is a
potential candidate ALS drug worthy of a clinical trial.