Objective To investigate the protective effects of luteolin on cerebral ischemia-reperfusion injury in rats.Methods 40 SD rats were randomly divided into four groups:sham group,model group,luteolin low and high dose groups.Each group was given oral administration for 7 days.After 1 h of last administration,the CIRI ( cerebral ischemia-reperfusion injury) group was produced inserting 5-0 line into the internal carotid artery.Then levels of IL-10, IL-1βand TNF-αcontents in myocardial tissues were measured.Meanwhile,infarct size was detected by TTC staining and number of BrdU +and Nestin + were measured by immunohistochemical methods.Results Compared with model group, luteolin could significantly decrease the levels of TNF-αand IL-1βin cerebral tissues(P<0.05),improve IL-10 content in cerebral tissues(P<0.05),and effectively reduce myocardial infarct range(P<0.05).Meanwhile luteolin could improve the expressions of BrdU + and Nestin + in cerebral tissues(P <0.05).Conclusion Luteolin has beneficial effects on rats with cerebral ischemia-reperfusion injury and improves endogenous neural stem cells proliferation.

Objective To investigate protective effects of polysaccharides from Platycarya strobilacea Sieb.et Zucc on cerebral ischemia-reperfusion injury in rats.MethodsForty Wistar rats were randomly divided into four groups:sham group,model group,Rehmannia glutinosa polysaecharide low,and high dose groups.Each group was given oral administration for 7 days.After 1 h of last administration, the CIRI (cerebral ischemia-reperfusion injury) group was produced inserting 5-0 line into the internal carotid artery.Neurological functional score was evaluated according to the method of Zea longa's score, meanwhile,infarct size was detected by TTC staining.Levels of superoxide dismutase (SOD) activity,malondialdehyde (MDA), IL-10, IL-1β and TNF-α contents in cerebral tissues were measured.TUNEL staining was used to assess the number of TUNEL-positive cells of the ischemic cortex.Western blot was used to analyze the expressions of Nrf2 and HO-1 in cerebral tissues.ResultsCompared to model group, Platycarya strobilacea a polysaccharides could significantly improve neurogical functions,greatly decrease the contents of MDA, IL-10 and IL-1β in cerebral tissues,improve SOD activity and IL-10 content in cerebral tissues,and effectively reduce cerebral infarct range.Meanwhile Platycarya strobilacea polysaccharides could enhance the expressions of Nrf2 and HO-1 in cerebral tissues.ConclusionPlatycarya strobilacea polysaccharides have beneficial effects on rats with cerebral ischemia-reperfusion injury, which may be mediated at least in part by the Nrf2/HO-1 pathway.

Background Refractive regression is a common complication of high myopia after laser in situ keratomileusis (LASIK),and it affects the stability of surgery.Objective This study was to observe the preventive effect of timolol on refractive regression in high myopia after LASIK.Methods A perspective randomized controlled trial was performed under the approval of Affiliated Hospital of Zunyi Medical College and the informed consent of the patients.Sixty eyes of 60 patients with high myopia (-7.16±0.95) D for LASIK were randomized into experimental group and control group.Regular eye drops were topically administered in the patients after LASIK in both groups,and timolol 0.5 ％ was added topically from 1 day after LASIK.The uncorrected visual acuity (UCVA),best corrected visual acuity (BCVA),spherical equivalent (SE),corneal anterior surface curvature,intraocular pressure (IOP),central corneal thickness (CCT) were measured before LASIK,1 week,1 month,3 months and 6 months after LASIK,respectively.Residual stromal bed thickness was calculated before LASIK.The differences of above-mentioned indexes were analyzed and compared between the two groups and among the various time points using repetitive measurements analysis of variance,independent simple t test and Bonferroni test.Results No significant differences were found in the demography between the experimental group and the control group,including age,UCVA,BCVA,SE,IOP,corneal anterior surface curvature,CCT and residual stromal bed thickness (all at P＞0.05).UCVA was significantly different between the two groups among various time points (Fgroup =3.91,P＜0.05 ; Ftime =3.80,P＜0.05),and the UCVA was significantly higher in the experimental group than the control group 6 months after LASIK (t=2.97,P＜0.05),and UCVA was gradually increased as the lapse of postoperative time with the significant difference between 7 days and 6 months after LASIK in the experimental group (P＜0.05).No significant difference was seen in the BCVA between the two groups at various postoperative time points (Fgroup =2.44,P＞0.05;Ftime =2.31,P＞0.05).SE refraction in both groups were significantly reduced from 7 days through 6 months after LASIK,showing significant difference between the groups at various time points after LASIK(Fgroup =11.52,P＜0.05;Ftime =22.06,P＜0.05).The SE refraction was higher in the experimental group than that in the control group 6 months after LASIK (t =2.47,P＜0.05).Corrected IOP in the experimental group was lower than that of the control group at 7 days,1 month and 3 months after LASIK,respectively (Fgroup =14.83,P＜0.05).The change of CCT was not statistically different between the control group and the experimental group (Fgroup =0.04,P＞0.05).The anterior corneal surface curvature was steady in the experimental group during the following-up duration after LASIK,while the control group was growing gradually (Ftime =18.73,P＜0.05).Conclusions The study data show that topical administration of 0.5％ timolol early in high myopia following LASIK is effective for the reduction of the refractive regression.It is suggested that 0.5％ timolol can prevent cornea ectasia by lowering IOP.Reduction of the IOP may contribute to improving the regression after keratorefractive surgery in high myopic eyes.

Objective To study the incidence of malposition of catheter at different body positions during the operation of peripherally inserted central catheter (PICC),and then select the optimum position to increase the success rate of insertion. Methods 155 patients were randomly divided into the horizontal position group (55 cases),the semi-reclining position group (49 cases) and the sitting position group (51cases).They all used chest X-ray to conffirm the position of top end of the catheter after insertion and then comparing the incidence rate of malposition of catheter among three groups. Results After insertion,11 patients' catheters were found malposition.Among them,8 patients were in the semi-reclining position group (incidence rate 16.3％),2 patients were in the horizontal position group (incidence rate 3.6％) and only one patient was in the sitting position group (incidence rate 1.9％ ).Incidence rate of catheter malposition in the semi-reclining position group was significantly higher than other two groups. Conclusions The best position for PICC is the horizontal position.If the patient has expiratory dyspnea or need to adjust the malposition catheter,sitting position can be used.Semi-reclining position should be avoided in the operation of PICC.

Objective To study the application of isokinetic muscle testing in identification of the faked paralysis to provide scientific data for establishing a standard systemof muscle strength in forensic medicine identification. Methods Fifty-seven patients with bone fracture or nerve damage as damaged group and 128 normal subjects pretended paralysis as faked paralyzed group were included in this study. Isokinetic muscle testing was performed on bilateral knees of all subjects in the two groups. The peak torque (PT) and peak torque angle (PTA ) were compared between both sides in each group. The fea-tures of torque-time graph of two groups were classified. Results In the damaged group, the differences of PTbetween two sides of flexors and extensors were statistically significant (P<0.05), while the dif-ferences of PTA were not statistically significant (P>0.05). In faked paralyzed group, the differences of PTand PTA between two sides of flexors and extensors were both statistically significant (P<0.05). The torque-time graph of damaged knee presented mostly as single lead peak, while torque-time graph of the faked paralyzed knee presented mostly as multiple peaks. Conclusion The feature of torque-time graph could be useful to identify the faked paralyzed extremities in forensic authentication.

Ethnic medicine is an important component of traditional Chinese medicine and excellent traditional culture. New products of ethnic medicine are important application form to play therapeutic advantages of ethnic medicine, whose research and development should focus on the maintenance of characteristics of ethnic medicine. From the perspective of the research and development of ethnic medicine, this article discussed research ideas in the development of new products of ethnic medicine and put forward that attention should be paid to the experience on using the ethnic medicine, related literature studies, and ethnic medicine resource protection and utilization as well. In addition, this article put forward the research tactics in new products of ethnic medicine, such as medicinal materials, effective parts, active ingredients, the secondary development research and so on, with a purpose of improving the level of researching and developing new products of ethnic medicine.

Objective To study the therapeutic effect of ankylosing spondylitis treated with sacroiliac joint injection under C-arm X-ray guidance. Methods Four hundred and eighty-three patients of ankylosing spondylitis were divided randomly into two groups according to the treatment method. Four hundred and twenty-one cases were in group A:sacroiliac joint injection under C-arm X-ray, the injection medicine were diprospan or triamcinolone acetonide and methotrexate, and with oral sulfasalazine (SASP) as well. Sixty-two cases were in group B: oral medicion SASP and meloxicam alone without injection. Self-evaluation, finger-to-floor distance, changes in Schober's sign, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) before and after treatment of 3 d, 1 week,2 weeks, 3 weeks, 4 weeks and 3 months were observed. Results Two indicators including self-evaluation and finger-to-floor distance at initial 3 d were significantly lower than those before treatment in group A: (6.18 ±0.55) scores vs. (8.89 ±0.53) scores, (30.10 ±3.94) cm vs. (50.20 ±3.93) cm, P<0.05. Schober's sign and occiput-to-wall distance at 1 week after treatment were significantly lower than those before treatment in group A:(3.44± 0.32) cm vs.(3.19±0.47) cm, (9.49±0.68) cm vs. (10.72±2.36) cm, P<0.05. Two indicators including self-evaluation and finger-to-floor distance at 1 week after treatment were significantly lower than those before treatment in group B:(7.07 ± 0.72) scores vs. (9.08 ±0.46) scores, (48.14 ±5.62) cm vs. (50.84 ±4.33) cm, P<0.05. Schober's sign at 4 weeks after treatment was significantly lower than that than before treatment in group B:(3.49± 0.56) cm vs. (3.22±0.58) cm, P<0.05. Occiput-to-wall distance at 2 weeks after treatment was significantly lower than that before treatment in group B:(9.08±1.54) cm vs. (10.11±1.58) cm, P<0.05. Conclusion The method of C-arm X-ray guided sacroiliac joint injection for treatment of ankylosing spondylitis is effective and feasible.

Objective To evaluate the long-term effective rate,retention rate and tolerability of the ketogenic diet (KD) in pediatric drug-resistant epilepsies.Methods Data of 36 children who were treated in Department of Pediatrics,the Second Affiliated Hospital of Xi'an Jiaotong University from Nov.2011 to Dec.2013 and had continuous follow-up of at least 12 months after initiation of the KD were analyzed prospectively.Response was defined as 50％ seizure reduction.The effective rate,retention rate, outcome-predictive value of various clinical factors were also assessed.The causes of the patients withdrew from KD and side effects were recorded and analyzed.Results Thirty-six children(29 boys,7 girls; mean age of 2.84 years)were included.The effective rate was 50.0％,52.8％,47.2％ and 41.7％ at the 1,3,6,12 months;the retention rate respectively was 94.4％,91.2％,69.4％ and 52.8％.Seventeen cases withdrew from KD.Seven cases (41.2％)ceased KD becau~ of a lack of compliance,5 patients because of poor outcome,and 2 cases because of repeated infection.None of the age,disease duration,etiology and seizure type could be used as the predictor for the favourable treatment for outcome.The antiepileptic drugs before KD might be predicted the efficacy of the KD.The less amount of the antiepileptic drugs,the more opportunity of the KD might have to succeed.The side effects on the start-up period were drowsiness,week and digestive discomfort,hyperlipoidemia,hypoglycemia and hepatic dysfunction.The side effects on the maintenance period were digestive discomfort,susceptibility to infection,hyperlipoidemia,the deficiency of trace elements.Conclusions The KD is a safe and potentially effective method in treatment of refractory epilepsy patients who do not respond to customary medication therapies.

Objective To study the effect of cyclooxygenase-2 (COX-2)selective inhibitor Celecoxib on the expression of P-glycoprotein(P-gp)in the brain of rats with status epilepficus,in order to assess the therapeutic value of intractable epilepsy.Methods Sixty adult male SD rats were randomly divided into blank control group,the epilepsy model group and Celecoxib intervention group.The status epilepticus was induced in rats by injecting Lithium pilocarpine.Forty-eight rats were included in the experiment.There were 16 rats in each of the blank control group,epilepsy model group and Celecoxib intervention group,respectively.Immunohistochemical method and Western blot method were used to detect the expression of P-gp in experimental group in the frontal cortex and hippocampus.Results Immunohistochemistry result showed that the expression of P-gp was significantly higher in epilepsy model group than the blank control group,and the difference was statistically significant (P ＜ 0.01);The P-gp expression in the Celecoxib intervention group was lower than that in the epilepsy model group,and the difference was statistically significant (P ＜0.01).Western blot results suggested that the expression of P-gp could be found both in the frontal cortex and hippocampus in each group.Compared with the blank control group,the P-gp expression was significantly higher than that in the epilepsy model group,and the expression of the P-gp was lower after the Celecoxib intervention than that in the epilepsy model group,and the difference was statistically significant (P ＜ 0.05).Conclusions COX-2 inhibitor Celecoxib could decrease the expression of P-gp in brain tissue with status epilepticus,which may provide a new method for the treatment of intractable epilepsy.

Paecilomyces hepialid was obtained through separation from cordyceps. Its name comes from studies on identification, cultivation, and morphology. It is one of the common substitutes of cordyceps. This article made a summary from the aspects of review, cultivation methods, active constituents, pharmacological effects, and product development. It also discussed the major issues remaining in the current researches and made suggestions for future studies.