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- W2081702914 abstract "Objectives: After cranial nerve X (CN X) injury, vocal fold paralysis treatments currently face a myriad of obstacles in achieving non-synkinetic, functional reinnervation. Of particular therapeutic interest is the targeted administration of locally expressed biological neurotrophic factors (NFs). To date, a method to culture mature CN X motoneurons for NF responsiveness screening has not been described.Methods: We herein present a novel method for establishing mature murine CN X motoneuron cultures, and use the model to test CN X motoneuron outgrowth response to individual and paired ascending concentrations of selected neurotrophic factors [glial cell-derived neurotrophic factor (GDNF), brain-derived neurotrophic factor (BDNF), and ciliary neurotrophic factor (CNTF)].Results: Findings demonstrated low concentration (5 ng/ml) CNTF to have the greatest positive effect on motoneuron outgrowth, beyond that of both indivual NF and paired NF combinations, based on total neurite outgrowth [mean total neurite outgrowth = 445·7±84·45 μm in the (5 ng/ml) CNTF group versus 179·7±13·63 μm in saline controls (P<0·01)]. Paired treatments with CNTF/GDNF, and CNTF/BDNF promoted motoneuron branching at a variety of concentrations beyond saline controls, and paired GDNF/BDNF had inhibitory effects on motoneuron branching.Discussion: Our described in vitro model of establishing mature CN X cultures allowed rapid screening for responsiveness to therapeutic NFs at a variety of concentrations and combinations. While the model ultimately may be used to investigate the molecular mechanisms of CN X motoneuron regeneration, the current study identified CNTF as a promising therapeutic candidate for the promotion of CN X outgrowth." @default.
- W2081702914 created "2016-06-24" @default.
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- W2081702914 date "2012-07-01" @default.
- W2081702914 modified "2023-09-26" @default.
- W2081702914 title "A rapid, novel model of culturing cranial nerve X-derived motoneurons for screening trophic factor outgrowth response" @default.
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- W2081702914 doi "https://doi.org/10.1179/1743132812y.0000000046" @default.
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