Реконструкция кортикоспинного тракта и двигательная функция в мышах с гемиплегическим церебральным параличом в сочетании с регуляцией Nogo-A.
Обработка статьи · этапы, ошибки и управление
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Huang Yuan, Xie Yunlan, Liu Liru, Fan Danxia, Le Wen, Zhang Xiaoying, Peng Tingting, Li Wenhui, Lin Huijuan, He Lu, Tang Hongmei, Xu Kaishou
Аннотация
Оригинал публикации
Constraint-induced movement therapy combined with Nogo-A downregulation enhances corticospinal tract remodeling and motor function in hemiplegic cerebral palsy mice.
Constraint-induced movement therapy (CIMT) enhances hand function in hemiplegic cerebral palsy (HCP) and stroke, partly by strengthening corticospinal tract (CST) projections, while down-regulated Nogo-A has been shown to facilitate neural regeneration in stroke and multiple sclerosis. However, their combined therapeutic effect remains unclear. Therefore, this study explored the impact of CIMT combined with Nogo-A downregulation on CST remodeling and motor function in HCP mice. Mice were randomly assigned to five groups: control, HCP, HCP + CIMT, HCP + SN (siRNA-Nogo-A treatment) and HCP + SN + CIMT. Rotarod and grip test were performed to assess the motor function. Western blot and immunofluorescence staining were performed to quantify Nogo-A and PKCγ expression in the M1 region. Diffusion tensor imaging and transmission electron microscopy were applied to assess fractional anisotropy (FA) of CST and myelin remodeling. Compared with controls, the HCP group exhibited significant motor dysfunction and myelin impairment, characterized by increased Nogo-A expression, decreased PKCγ expression, and reduced FA value of CST (p < 0.05). In contrast, mice treated with CIMT or SN exhibited improved motor function, reduced Nogo-A expression, elevated PKCγ expression, increased FA value of CST, and enhanced myelin remodeling compared with the HCP group (p < 0.05). Notably, CIMT and SN exerted synergistic effects, as the HCP + SN + CIMT group outperformed either single-treatment group (p < 0.05). These findings suggest CIMT combined with Nogo-A downregulation synergistically enhances motor function in HCP mice by reducing Nogo-A expression in M1 region and promoting CST remodeling.