Effects of transcranial direct current stimulation on the walking function of patients with early Parkinson's disease: A randomized and controlled trial / 中华物理医学与康复杂志

Objective To explore the effect of transcranial direct current stimulation (tDCS) on the walking function of patients with early Parkinson's disease.Methods Thirty patients with early Parkinson's disease were randomly divided into an intervention group (n =15) and a control group (n =15).In addition to routine treatment,both groups were apparently provided with tDCS,though the current intensity for the intervention group was 2mA and that of the control group was zero.Both groups were treated for 20min every day for 5 days in succession.Before and after the treatment,all of the patients were evaluated using the timed up and go test (TUGT) and their gaits were analyzed to determine step velocity,cadence and width.Results Before and after the treatment there were no significant differences between the two groups in terms of average TUGT time,though the average TUGT time had decreased significantly compared with before the treatment.Before the treatment there were no significant differences between the two groups in average step velocity,cadence or width.After the treatment,significant improvements were observed only in the intervention group.The average step width of the intervention group was then significantly bigger than that of the control group.Conclusion Transcranial direct current stimulation can improve the walking function and stability of early Parkinson's patients.

Study on Inhibition Effects of Freeze-thawing Leech Extract on HepG2 Cells / 中国中医药信息杂志

Objective To study the inhibition effect of leech extract on HepG2 cells. Methods Human hepatocellular cancer cell line HepG2 were treated with different concentrations of leech extracts which were extracted by method of freeze-thawing with liquid nitrogen and contrasted with that by method of water extracting and ethanol precipitating. The inhibition effects and cell morphous were examined by MTT assay and Acridine orange (AO) fluorescent staining method respectively. Result The 6～15 mg/mL drug concentrations of leech extract by method of freeze-thawing with liquid nitrogen had an obvious inhibition on proliferation of HepG2 cells in a dose-dependent manner, and the effect was better than that by method of water extracting and ethanol precipitating (P