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2015 ; 10
(11
): e0142786
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Zonisamide Enhances Neurite Elongation of Primary Motor Neurons and Facilitates
Peripheral Nerve Regeneration In Vitro and in a Mouse Model
#MMPMID26571146
Yagi H
; Ohkawara B
; Nakashima H
; Ito K
; Tsushima M
; Ishii H
; Noto K
; Ohta K
; Masuda A
; Imagama S
; Ishiguro N
; Ohno K
PLoS One
2015[]; 10
(11
): e0142786
PMID26571146
show ga
No clinically applicable drug is currently available to enhance neurite
elongation after nerve injury. To identify a clinically applicable drug, we
screened pre-approved drugs for neurite elongation in the motor neuron-like NSC34
cells. We found that zonisamide, an anti-epileptic and anti-Parkinson's disease
drug, promoted neurite elongation in cultured primary motor neurons and NSC34
cells in a concentration-dependent manner. The neurite-scratch assay revealed
that zonisamide enhanced neurite regeneration. Zonisamide was also protective
against oxidative stress-induced cell death of primary motor neurons. Zonisamide
induced mRNA expression of nerve growth factors (BDNF, NGF, and
neurotrophin-4/5), and their receptors (tropomyosin receptor kinase A and B). In
a mouse model of sciatic nerve autograft, intragastric administration of
zonisamide for 1 week increased the size of axons distal to the transected site
3.9-fold. Zonisamide also improved the sciatic function index, a marker for motor
function of hindlimbs after sciatic nerve autograft, from 6 weeks after surgery.
At 8 weeks after surgery, zonisamide was protective against denervation-induced
muscle degeneration in tibialis anterior, and increased gene expression of Chrne,
Colq, and Rapsn, which are specifically expressed at the neuromuscular junction.
We propose that zonisamide is a potential therapeutic agent for peripheral nerve
injuries as well as for neuropathies due to other etiologies.