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全息超声调节1-甲基-4-苯基-1,2,3,6-四氢吡啶诱导的帕金森病小鼠模型中的神经活动。

Holographic Ultrasound Modulates Neural Activity in a 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine-Induced Mouse Model of Parkinson's Disease.

作者信息

Zhou Hui, Li Fei, Lin Zhengrong, Meng Long, Chen Dan, Zhang Qingping, Niu Lili

机构信息

Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.

Tech X Academy, Shenzhen Polytechnic University, Shenzhen, China.

出版信息

Research (Wash D C). 2024 Nov 6;7:0516. doi: 10.34133/research.0516. eCollection 2024.

Abstract

Ultrasound (US) has emerged as a noninvasive neurostimulation method for motor control in Parkinson's disease (PD). Previous in vivo US neuromodulation studies for PD were single-target stimulation. However, the motor symptoms of PD are linked with neural circuit dysfunction, and multi-target stimulation is conducted in clinical treatment for PD. Thus, in the present study, we achieved multi-target US stimulation using holographic lens transducer based on the Rayleigh-Sommerfeld diffraction integral and time-reversal methods. We demonstrated that holographic US stimulation of the bilateral dorsal striatum (DS) could improve the motor function in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD. The holographic US wave (fundamental frequency: 3 MHz, pulse repetition frequency: 500 Hz, duty cycle: 20%, tone-burst duration: 0.4 ms, sonication duration: 1 s, interstimulus interval: 4 s, spatial-peak temporal-average intensity: 180 mw/cm) was delivered to the bilateral DS 20 min per day for consecutive 10 d after the last injection of MPTP. Immunohistochemical c-Fos staining demonstrated that holographic US significantly increased the c-Fos-positive neurons in the bilateral DS compared with the sham group ( = 0.003). Moreover, our results suggested that holographic US stimulation of the bilateral DS ameliorated motor dysfunction ( < 0.05) and protected the dopaminergic (DA) neurons ( < 0.001). The neuroprotective effect of holographic US was associated with the prevention of axon degeneration and the reinforcement of postsynaptic densities [growth associated protein-43 ( < 0.001), phosphorylated Akt ( = 0.001), β3-tubulin ( < 0.001), phosphorylated CRMP2 ( = 0.037), postsynaptic density ( = 0.023)]. These data suggested that holographic US-induced acoustic radiation force has the potential to achieve multi-target neuromodulation and could serve as a reliable tool for the treatment of PD.

摘要

超声(US)已成为一种用于帕金森病(PD)运动控制的非侵入性神经刺激方法。先前针对PD的体内超声神经调节研究均为单靶点刺激。然而,PD的运动症状与神经回路功能障碍有关,且在PD的临床治疗中采用的是多靶点刺激。因此,在本研究中,我们基于瑞利 - 索末菲衍射积分和时间反转方法,使用全息透镜换能器实现了多靶点超声刺激。我们证明,对双侧背侧纹状体(DS)进行全息超声刺激可改善1 - 甲基 - 4 - 苯基 - 1,2,3,6 - 四氢吡啶(MPTP)诱导的PD小鼠模型的运动功能。全息超声波(基频:3 MHz,脉冲重复频率:500 Hz,占空比:20%,音爆持续时间:0.4 ms,超声处理持续时间:1 s,刺激间隔:4 s,空间峰值时间平均强度:180 mw/cm)在最后一次注射MPTP后连续10天,每天20分钟传递至双侧DS。免疫组织化学c - Fos染色显示,与假手术组相比,全息超声显著增加了双侧DS中c - Fos阳性神经元的数量(P = 0.003)。此外,我们的结果表明,对双侧DS进行全息超声刺激可改善运动功能障碍(P < 0.05)并保护多巴胺能(DA)神经元(P < 0.001)。全息超声的神经保护作用与预防轴突退化和增强突触后密度有关[生长相关蛋白 - 43(P < 0.001)、磷酸化Akt(P = 0.001)、β3 - 微管蛋白(P < 0.001)、磷酸化CRMP2(P = 0.037)、突触后密度(P = 0.023)]。这些数据表明,全息超声诱导的声辐射力具有实现多靶点神经调节的潜力,并且可以作为治疗PD的可靠工具。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3917/11538569/d89b0231f65c/research.0516.fig.001.jpg

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