ABSTRACT
BACKGROUND:Liquiritin has the protective and nutritive effects on neural stem cells. However, the effect of liquiritin on neural stem cells from the brain of mouse embryos remains unclear. OBJECTIVE:To investigate the effects of different concentrations of liquiritin on the proliferation of neural stem cells from the brain of mouse embryos. METHODS:Neural stem cells were separated from the embryonic brain of Kunming white mice at the gestational age of 14 days. The identification of embryonic neural stem cells was performed by immunocytochemistry method. The expression of neural stem cells-special genes was determined by qRT-PCR. The cell growth curve was drawn and proliferation of embryonic neural stem cells treated with 0, 1, 2, 4 or 8 g/L liquiritin for 48 hours was measured by MTT assay. RESULTS AND CONCLUSION:(1) When cultured at day 5, al individual neural stem cells gathered together into neurospheres; with the extension of time, the neurospheres were enlarged, and gathered together into larger cell masses. (2) Results from immunocytochemistry showed that all the floating neurospheres was nestin-positive. Data from qRT-PCR revealed a higher expression of nestin mRNA, but there was no expression of neuron-specific enolase and glial fibrillary acidic protein in the neural stem cells. (4) The growth of neural stem cells was slow at the beginning. After 2-3 days, the cell proliferation quickly entered the exponential phase. After 4 days, the cell proliferation gradually slowed down, and the overall cell growth entered into the platform period. (5) The cell proliferation after treatment with 2, 4 or 8 g/L liquiritin was faster than that in the control group (0 g/L). To conclude, 2-8 g/L liquiritin could increase the proliferation of neural stem cells from the brain of mouse embryos.
ABSTRACT
OBJECTIVE:To observe the clinical efficacy and safety of Shuxuetong combined with acupuncture in the treat-ment of patients with stroke during recovery period. METHODS:80 patients with stroke during recovery period were selected and divided into observation group and control group,with 40 cases in each group according to random number table method. Control group received acupuncture,6 times a week. Observation group was additionally given Shuxuetong injection 6 ml added into 0.9% Sodium chloride injection 250 ml,ivgtt,qd,for one month. Clinical efficacy of 2 groups were observed as well as in-tracranial [arteriae cerebri anterior (ACA),middle cerebral artery (MCA),basilar artery (BA)] blood flow rate,neurological deficit score(NIHSS),cognitive ability(MMSE)score,Fugl-Meyer activity score and Fugl-Meyer balance score before and af-ter treatment. The occurrence of ADR was compared. RESULTS:Total effective rate of observation group was 95.0%,which was significantly higher than that of control group(70.0%),with statistical significance(P<0.05). Compared with before treatment, blood flow rate of ACA and MCA were increased significantly in observation group after treatment,and were higher than those of control group with statistical significance (P<0.05). NIHSS,MMSE,Fugl-Meyer activity score and Fugl-Meyer balance score of 2 groups improved significantly after treatment,the observation group was better than the control group,with statistical signifi-cance(P<0.05). No obvious ADR was found in 2 groups. CONCLUSIONS:Shuxuetong combined with acupuncture show signif-icant therapeutic efficacy,and improve intracranial blood flow rate and neurologic function with good safety.
ABSTRACT
@#The standard of speech disability used in Chinese Second Disability Sampling Survey is introduced in the paper,including classification,screening,survey instrument,diagnose,cause analysis and rehabilitation advice.