OBJECTIVE To investigate the mechanism by which Naozhenning granules （NZN） improve learning and memory impairment in a rat model of multiple cerebral concussion （MCC）. METHODS The MCC rat model was established using the closed controlled cortical impact method. The experiment was set up with a blank group （normal saline）， a model group （normal saline）， a piracetam group （positive control group， 0.324 g/kg）， and high-， medium-， and low-dose NZN groups （5.4， 2.7， 1.35 g/kg）， with 11 rats in each group. Drugs or normal saline were administered by gavage once daily for 28 consecutive days. General condition and body weight were monitored throughout the experiment. The sucrose preference rate and novel object recognition index were measured； Evans blue （EB） extravasation in the cerebral cortex was detected； pathological changes of cortical neurons were observed； the levels of B-cell lymphoma-2 （Bcl-2）， Bcl-2-associated X protein （Bax）， interleukin-6 （IL-6）， IL-10， and tumor necrosis factor-α （TNF-α） in the cerebral cortex were determined； and the phosphorylation levels of AMP-activated protein kinase （AMPK）， glycogen synthase kinase 3β （GSK3β）， and Tau protein were detected. RESULTS Compared with the blank group， the model group showed poor mental state， sluggish response to external stimuli， reduced food and water intake， decreased limb flexibility， and disheveled fur. Body weight， sucrose preference rate， and novel object recognition index were significantly decreased （ P ＜0.05）； EB extravasation in the cerebral cortex was significantly increased （ P ＜0.05）， with severe neuronal damage. The positive area ratio of Bax protein， IL-6 and TNF-α levels， and Tau protein phosphorylation level were all significantly increased （ P ＜0.05）， whereas the positive area ratio of Bcl-2 protein， IL-10 level， and AMPK and GSK3β protein phosphorylation levels were significantly decreased （ P ＜0.05）. Compared with the model group， all NZN dose groups showed improvements in general condition and pathological damage， with quantitative indices partially restored， and the differences in quantitative indices in high-dose NZN group were statistically significant （ P ＜0.05）. CONCLUSIONS NZN can effectively improve learning and memory impairment in MCC model rats. The mechanism may be related to activating the AMPK/GSK3β pathway， inhibiting inflammatory response， reducing Tau protein phosphorylation level， and then repairing the neuronal injury.

Objective To evaluate the clinical efficacy and safety of traditional Chinese medicine on internal and external treatment of acne.Methods 128 patients in Dermatology Department of Xiyuan Hospital CACMS from May 2012 to March 2013 were collected and randomly divided into Chinese medicine group and western medicine group.The patients of Chinese medicine group were divided into invasion of the Lung by Wind-Heat syndrome and damp-heat oflmg and stomach syndrome,respectively taking acne liquid 1 or 2 orally and using the herb mask once a week.The western medicine group took Roxithromycin Capsules orally and smeared 0.3％ Viaminate and Vitamin E Cream.The treatment period lasted for 6 weeks,and collected the photograph of the target lesion before and after research every 2 week and evaluated the efficacy.Result The total efficacy rate were 90.77％ (59/65) and 74.60％ (47/63) for Chinese medicine group and western medicine group respectively,with significant difference between them(x2=11.83,P＜0.05).The efficacy rates were 87.50％ and 93.94％ for invasion of the Lung by Wind-Heat syndrome and damp-heat of lung and stomach syndrome respectively,with no significant difference between them(x2=0.416,P＞0.05).The TCM symptom scores after treatment [Chinese medicine group (4.36 ± 2.45),western medicine group (8.62± 2.49)] had significant difference in two groups respectively compared with before treatment[Chinese medicine group(15.33±6.08),western medicine group(14.34±5.29),P＜0.05].The difference of TCM symptom scores after treatment between the two groups also had a significant difference (P＜0.05).The TCM symptom scores after treatment of invasion of the Lung by Wind-Heat syndrome group and damp-heat of lung and stomach syndrome group were (4.50±3.01) and (4.24±1.83),which had a significant difference compared with before treatment respectively[(15.37±7.03)and(15.29±5.13),P＜0.05].Conclusion The TCM internal and external treatment on acne could reduce the number of lesions and improve TCM symptom scores.The effect of treating invasion of the Lung by Wind-Heat syndrome and damp-heat of lung and stomach syndrome with TCM was almost equal.