The surface-enhanced Raman spectra of bilirubin and biliverdin were obtained.By the bands analysis of the spectra,the orientation of bilirubin and biliverdin on the surface of silver colloid was discussed.In such case,the bilirubin was adsorbed on the silver colloid particle with the two planar pyrromethenone groups intercalated into the globe silver colloid particle,however,the biliverdin might lie flat on the surface of silver colloid with syn-synsyn conformation.

0.05).The adverse effect of treatment group was significantly less than control group(P

Objective To evaluate the efficacy and safety of levetiracetam (LEV) monotherapy on children with epilepsy.Methods Forty-one children (26 cases were male,15 cases were female) with epilepsy aged 7 months to 13 years were treated with LEV as monotherapy.These patients were selected from Department of Neurology ,Wuhan Children′s Hospital, from Aug.2007 to Aug.2009.The starting do-sage of LEV was (13.6?4.7) mg?kg-1?d-1,twice daily,and its objective dosage was (25.7?7.5) mg?kg-1?d-1,twice daily.LEV monotherapy was investigated by a self-controlled and open-label research,and the follow-up period ranged from 6 months to 2 years.Results The effective rate was 68.3% (28 cases),with 39.0% (16 cases) achieving seizure freedom in LEV monotherapy of children with epilepsy.Thirteen patients (31.7%) had poor efficacy in reduction of seizures,7 patients (17.1%) discontinued LEV monotherapy due to either an inadequate seizure control or aggravated seizures.Fifteen patients (36.6%) had the therapy-related adverse events in LEV monotherapy,including gastrointestinal dysfunction (5 cases),irritability (5 cases),dizziness (2 cases) and somnolence (2 cases).The adverse effects appeared in 2-4 weeks of early LEV therapy and were spontaneously disappeared in 1 week to 1 month of continuing therapy.Conclusions The LEV monotherapy is effective and safe for the control of partial and generalized seizures in children with epilepsy.LEV appears to be a broad-spectrum,first-line anti-epileptic drug in treatment of children with epilepsy.

Objective To investigate the clinical characteristics and diagnostic main points of poliomyelitis-like syndrome(PS).Met-hods The clinical data of 15 children with PS were analyzed retrospectively including nervous system manifestation,results of lab andauxiliary examination,diagnosis and reason of misdiagnosis,treatment and progress.Results PS in all 15 children was characterized by mean age of onset(3.3 years),and forerunner infection(in 11 cases,73%)with acute upper respiratory infection of diarrhea 1-2 weeks pre-onset or during onset.All cases were acute flaccid paralysis,12 cases(80%) of which were only one limb.The positive outcome of serologic examination in PS consisted of 4 cases in coxsackie virus-IgM,1 case in EB virus-IgM,1 case in herpes simplex virus-IgM and 1 case in mycoplasma-IgM.All children showed the electromyologram changes in nerve damage.The muscle force of 4 cases increased one grade.Conclusions Children with PS are characterized by the age of onset under 5 years old,acute flaccid paralysis(mostly affected one limb),and the most pathogen being enterovirus.The electromyologram examination can help establish a definite diagnosis in PS.

Objective To explore the risk factors affecting prognosis of children with Tourette syndrome(TS).Methods The follow-up visits were conducted on the clinical data of 98 cases with TS(85 male,13 female;aged 4-16 years old)from 1997 to 2005 in Wuhan children's hospital.All cases were consistent with the diagnostic criteria of TS in the 4th edition of Diagnostic and Statistical Manual of Mental Disorders(DSM-Ⅳ).The investigations were performed by the investigators who received special training using the unified questionnaire with the methods of direct inquiry or by telephone.The factors included sex,age,severity of TS,the primary symptoms,family history,coexisting diseases,basic diseases,perinatal abnormity and family-social relations.The prognosis of TS and these factors were analyzed by linear regression and stepwise regression with SPSS 12.0 software.Results About 16 cases lost follow-up and the other 82 cases with follow-up(72 male and 10 female)received retrospective review.They were 14 to 25 years old with complete data,and 50 cases healed,32 cases not healed.Results from non-conditional simple variant Logistic regression showed that such cases were associated with the following factors:age,family history of TS,severity of TS,coexisting diseases,basic diseases and perinatal abnormity(Pa0.05).Out of 6 suspicious factors,there were coexisting diseases(OR=84.088,95%CI 10.850-651.682),severity of TS(OR=13.956,95% CI 2.412-80.762),and family history of TS(OR=27.127,95% CI 1.047-702.831)of risk factors.Conclusion The long-term prognosis of children with TS may be related with coexisting disease,severity of TS and family history respectively.

Objective To investigate protective activity against Aβ25-35-induced cytotoxicity in PC12 cells of different extracts and ursolic acid, which were isolated from pyrola decorata. Methods Aβ25-35-induced cytotoxicity in PC12 cells was established as the model in vitro. The cultured PC12 cells were divided into blank control group, DMSO control group, model control group, different extract groups of pyrola decorate and ursolic acid(UA) group. The different extract groups included ether extract (PE), acetidin extract (AE), n-butanol extract (BE), the water extract (WE), 50% ethanol extract (HEE). MTT assay was used to test the optimum concentration, and the number of viable cells in culture medium was measured by ELISA at 490 nm wavelength. Results The cell viabilities in different extracts groups(PE, AE, BE, WE, HEE) were respectively 89.3%, 77.2%, 79. 2%, 75. 1% ,74. 0% at the concentration of 5. 0 mg ? mL-1 . Moreover, ursolic acid showed the best neuroprotective activity (88.9%) at the concentration of 500 μg?L-1 . Compared with model control group, the survival rate of each group was remarkably increased, and the protective activities of PE and UA were more significant among them. Conclusion Different polar extracts of pyrola decorata and isolated ursolic acid have neuroprotective effects on Aβ25-35-induced cytotoxicity in PC12 cells in certain degrees.

Objective To identify the dynamic influence of antibiotics use on T helper cell(Th) 1/Th2 cytokine balance in neonatal rats in their early life.Methods Twenty-four newborn SD rats were randomly divided into 3 groups including 2dCef group,7dCef group and a control group (n =8).SD rats at 2 or 7 days of age were injected Cefotaxime sodium intraperitoneally for 3 consecutive days.The control group was injected the same amount of phosphate buffer saline.Serum and bronchoaveolar lavage fluid (BALF) samples were collected on 35 days old and diffe-rential cell count in BALF was done.Enzyme linked immunosorbent was used to detect the concentration of interleukin(IL)-12,interferon-γ(IFN-γ),IL-4 and IL-5 in serum and BALF,and real-time quantitative PCR was used to detect mRNA expression of those cytokines in lung tissues.Results The number of total cells,neutrophils,and lymphocytes in Cefotaxime treated on 2nd day after birth were significantly higher than those in the controls and 7th day group (F =93.78,15.84,7.36,all P ＜0.05).For Thl cytokines detection:the IL-12 secretion in BALF and serum and INF -γsecretion in BALF of the 2 antibiotic groups were lower than those in control group (F =26.53,12.95,47.18,all P ＜ 0.05),the decrease in 2dCef group were more obviously than 7dCef group [(127.72 ± 12.35) ng/L vs (198.15 ± 18.93) ng/L,(105.91±13.61) ng/Lvs (133.63 ±13.82) ng/L,(147.23 ±24.10) ng/Lvs (178.52±12.46) ng/L,all P ＜0.05].The mRNA expression of IL-12 in antibiotic groups were lower than those in control group (F =33.60,P ＜0.05),and the decrease in 2dCef group was more obvious than that in 7 dCef group (0.073 ± 0.023 vs 0.093 ± 0.028,P ＜0.05).For the Th2 cytokines:the IL-4 secretion concentration and mRNA expression in the 2 antibiotic groups were higher than those in the control group (BALF,serum and lung) (F =64.26,13.79,11.54,all P ＜ 0.05),the increase in 2dCef group was more obvious than that in 7dCef group[(103.65 ± 7.68) ng/L vs (82.04 ± 8.77) ng/L,(87.81 ± 4.72) ng/L vs (69.69 ± 7.79) ng/L,(0.067 ± 0.036) ng/L vs (0.051 ± 0.055),all P ＜ 0.05];however,no significant differences of IL-5 either mRNA or cytokine secretion being detected among these 3 groups (F =0.50,0.75,0.08,all P ＞ 0.05).Conclusions Antibiotic use during early time of neonate rats alters postnatal immune cells distribution in the lung and promotes the shift in cytokine balance towards a Th2 profile,and the earlier the antibiotic use,the more serious the impact.

0.05).?2-MG mass concentration was significantly increased in the cerebrospinal fluid(P

Armillariella tabescens EJLY2098 was capable of secreting p-mannanase by konjac inducement. A 34 orthogonal design was applied to determine the optimum medium of inducing mannanase by Armillariella tabescens EJLY2098. The results suggested that Armillariella tabescens EJLY2098 secreted the high-activity enzyme in the optimum medium, which was composed of 2% konjac, 1% peptone, 25% potato juice,0.3% KH2PO4,15% MgSO4?7H2O, 0.01% VitB1. Purified by DEAE-anion exchange chromatography, two eluting peaks (P1 and P2) with the p-mannanase activity were obtained, and one of them (named?-mannanase P2) was a single band by the SDS-PAGE, and the molecular weight of?-mannanase P2 was 78. 9kDa. The isoelectric point of?-mannanase P2 was estimated to be 4.0-4. 1. The optimum activity for the enzyme was found at 60℃and pH4. 0 - 6. 0, and the enzyme was stable between pH4. 5 - 6. 0. The activity of?-mannanase P2 were enhanced by Na+ and Ba2+ . This?-mannanase can be used in feed industy. a new fungi secreting?-mannanase was obtained, providing an important base for cloning mannanase gene and constructing recombin microbe expressing?-mannanase .

AlM:To evaluate the clinical efficacy of intravitreal injection of ranibizumab combined with macular grid photocoagulation for diabetic macular edema ( DME) .METHODS:Totally 60 eyes ( 60 patients ) with DME were randomly divided into 2 groups: 30 eyes of simple injection group underwent intravitreal injection of ranibizumab, and 30 eyes of combined treatment group underwent intravitreal injection of ranibizumab and macular grid photocoagulation 1wk later. The best corrected visual acuity ( BCVA ) , central macular thickness ( CMT ) measured by optical coherence tomography ( OCT ) and postoperative complications were observed.
RESULTS:ln simple injection group, the BCVA after operation were separately 0. 390 ± 0. 075 (4wk), 0. 367 ± 0. 088 (8wk) and 0. 319 ± 0. 064 (12wk), the CMT after operation were separately 221. 63 ± 112. 34μm (4wk), 337. 73±99. 56μm (8wk) and 432. 92 ± 100. 46μm (12wk), which were much better than pre-operation. But during follow-up, the BCVA presented down trend and the CMT was on the rise slowly. ln combined treatment group, the BCVA after operation were separately 0. 385 ± 0. 036 (4wk), 0.382±0.079 (8wk) and 0.377±0.097 (12wk),the CMT after operation were separately 249. 77 ± 106. 55μm (4wk), 270. 40 ± 92. 88μm (8wk) and 275. 84 ± 97. 34μm (12wk ), which were satisfactory and steady during follow-up, better than simple injection group (P<0. 05).CONCLUSlON:lntravitreal injection of ranibizumab can effectively improve visual acuity and decrease central foveal thickness for patients with DME, combining with macular grid photocoagulation can ensure therapeutic effects steady and permanent.