Research Progress on Epidural Electrical Stimulation for Motor Disorders after Spinal Cord Injury / 中山大学学报(医学科学版)

In recent years， the incidence of spinal cord injury （SCI） has shown an increasing trend， and the resulting motor impairment cause significant harm to patients themselves and public health. Although the current clinical treatments for motor disorders after SCI are diverse， mainly focusing on improving dysfunction and improving patients' daily living ability through external stimulation， there is still a lack of radical solutions. Epidural electrical stimulation （EES） as an emerging treatment technology， has been shown in a number of international clinical studies on the SCI significant potential of motor function recovery， has significant curative effect， convenient， widely applicable， adjustable advantages， the rehabilitation of movement disorders after SCI has a lot of big benefits， in the spinal cord injury rehabilitation has great prospect. However， most of the domestic research are limited to the neurogenic bladder caused by abnormal autonomic nerve function after SCI， and mostly combine traditional Chinese and western medicine rehabilitation treatment， the emerging therapy of EES， this paper aims to review the basic principle of EES， potential mechanism of action and its c linical application progress in the treatment of movement disorders after SCI， in order to provide reference for the clinical application and scientific research of EES treatment of motor disorders after SCI.

Research progress on exosomes and their engineering in ischemic stroke / 中风与神经疾病杂志

@#Ischemic stroke is a cerebrovascular disease with high disability rate and mortality. At present,there is no effective treatment to promote the recovery of neurological function after ischemic stroke. Exosomes can not only mediate the communication between cells,but also have the ability to cross the blood-brain barrier,so they have received extensive attention in the treatment of ischemic stroke. Exosomes are modified by bioengineering technologies to prepare engineered exosomes with brain targeting and therapeutic effects,which have been applied in the research and treatment of ischemic stroke,in order to improve the repair of neurological function after stroke,reduce the clinical disability rate and mortality,and improve the survival and quality of life of patients. This article reviews exosomes,the role of exosomes in ischemic stroke,and the preparation of engineered exosomes,and discusses the application prospect of engineered exosomes in the treatment of ischemic stroke,with a view to providing a reference for subsequent research.

Research progress on metal ion-induced Parkinson's disease / 环境与职业医学

Parkinson's disease (PD) is one of the hotspots in the research field of neurodegenerative diseases, and its pathogenesis is still controversial. Trace metal elements play an important role in normal growth and development of the human body. Metal ions can cross the blood-brain barrier and enter the brain, leading to α-synapnuclein aggregation, mitochondrial dysfunction, and degeneration of dopaminergic neurons, and then inducing the occurrence of PD. This article mainly reviewed the potential mechanisms of metal elements in PD, discussed the role of metabolic imbalance of common trace metals (copper, iron, manganese, and zinc) in PD, and put forward new insights into the treatment of PD.

Using quadratic regression universal rotary combination design to optimize the fluorescence labeling condition of lycium barbarum polysaccharide / 国际中医中药杂志

Objective Quadratic regression universal rotary combination design was used to optimize the fluorescence labeling condition of lycium barbarum polysaccharide (LBP).Methods The fluorescence labeling condition of LBP presented, when the covalent coupling of LBP and tyramine was reacted with fluorescein isothiocyanate (FITC). Filter the best labeling condition via using quadratic regression universal rotary combination design experiment on the relationship of labeling efficiency among pH value of buffer solution, reaction time, temperature and the dose of tyramine.Results The regression equation was:Y=0.085 41 - 0.002 82X1 - 0.015 68X2 + 0.008 11X3 + 0.005 01X4 + 0.008 75X1X2 - 0.005 75X1X3 - 0.001 75X1X4 + 0.010 63X2X3 + 0.000 125X2X4 + 0.000 25X3X4 - 0.021 44X12 - 0.008 89X22 - 0.001 984X32 + 0.003 66 X42, and the variables fromX1 toX4 represented pH value, reaction time, temperature and dose of tyramine, respectively. The goodness of fitting of regression equation was statistically significant. The condition of labling LBP was optimized when the temperature was at 50℃, timing of labling at the fourth day and pH value was 8.5.Conclusion The condition of labling LBP was optimized with suitable temperature, pH value and extended timing.