Objective To investigate the features and neural mechanisms of sustained attention and executive function in patients with acute mild traumatic brain injury (mTBI) by comparing and analyzing behavioral and event-related potentials of patients and healthy controls.Methods Seventeen patients with acute mTBI and seventeen healthy controls participated in a cued continuous performance test.Behavioral data and event-related potentials were collected and analyzed.Results 1.There were significant differences between the mTBI group and the control group in hitting number ((66.76±3.27), (69.12± 1.41)) ,reaction time((533.66±144.20) ms, (413.03±94.57) ms) and the number of errors of omission ((3.24±3.27), (0.88± 1.41)) (P＜0.05), but no significant differences in the number of false errors ((0.35±1.00), (0.53±0.87)) (P＞0.05).2.The amplitude of Go-N2 and Nogo-N2 were significantly smaller in mTBI group than that in control group (P＜0.05).The main effect of group was significant of N2 amplitude (P＜0.05), but main effect of condition and the interaction effect were not significant(P＞0.05).Group and condition had no significant main effect and interaction effect on the latency of N2 (P＞0.05).The amplitude of Go-P3 was significantly smaller in mTBI group than that in control group (P＜0.05),while not on the amplitude of Nogo-P3(P＞0.05).The main effect of group and condition were significant on P3 amplitude (P＜0.05),but the interaction effect was not significant(P＞0.05).Group and condition had no significant main effect and interaction effect on the amplitude of P3 (P＞0.05).Conclusion Patients with mTBI show impairments in sustained attention and conflict monitoring, but not in response inhibition.

Objective To observe the vaccination reactions and immunogenicity of the application of lyophilized Vero cell rabies vaccine without adjuvant in a way of low-dose intradermal injection for post-exposure group. Methods Conducting post-exposure immunization for 256 persons with the class Ⅱ level exposure to rabies. Based on a randomized, single-blind principle, all subjects were divided into intradermal injection (ID) group (n= 128),injected 0.1 ml for each site in accordance with 0,3,7,28,90 d,2 sites,2 sites,2sites,1 site,1 site respectively, and intramuscular injection(IM) group(n= 128) in accordance with 0,3,7,14,28 d in full-volume (0.5ml) PVRV Deltoid injection. The local and systemic vaccination reactions were observed for the different injection ways. The indirect sandwich ELISA assay was used to analyze the antibody levels. Results For the intradermal injection group, the incidence rates for local redness and swelling, induration, pain, itch were 1.27%, 0.29% ,0.49% ,11.43% respectively,for the intramuscular group, the incidence rates were 1.09% ,0. 16% ,2. 81% ,1.41% respectively. From the point of systemic reactions,the incidence rates of fever,rash,headache,fatigue and weakness were 0.31 % ,0. 16% ,0. 31 % , 1.09% respectively in the intradermal injection group,and the rates were 0.31% ,0.31% ,0.63% , 1.09% respectively in intramuscular group. All the adverse effects often occurred following the 1st,2nd injection. The seroconversion rates for intradermal injection and intramuscular were 94.53% ,95.31% following 14 d immunization respectively,the rates were 96. 83% ,97.64% following 42 d immunization respectively. For the post-exposure group,no statistical difference in significance was found between the two seroconversion rates. Conclusion For the application of domestic lyophilized Vero cell rabies vaccine,its adverse reactions are mild,and immunogenicity is good.

Objective To observe the clinical efficacy ofTiaozhong YifeiPrescription combined with Western therapy for treatment of cough variant asthma (CVA) remission. Methods Totally 90 patients with CVA remission were randomly divided into TCM group, Western therapy group and TCM and Western therapy group, 30 cases in each group. TCM group was givenTiaozhong YifeiPrescription, 1 dose per day, morning and evening; Western therapy group was given salmeterol xinafoate and fluticasone propionate powder for inhalation, each 1 suction, 2 times a day, inhalation; a mixture ofTiaozhong YifeiPrescription and xinafoate and fluticasone propionate powder for inhalation was given to TCM and Western therapy group, the same as above, continuous treatment for 12 weeks. TCM syndrome score, EOS, IgE, pulmonary function and safety index were observed in the three groups before and after treatment. The recurrence rate and the number of colds after three-month treatment were observed.Results TCM syndrome scores in the three groups decreased after treatment (P<0.05). There was statistical significance between TCM group and TCM and Western therapy group after treatment (P<0.05). The total effective rate of TCM group was 96.67% (29/30), 100.00% (30/30) of Western therapy group, 76.67% (23/30) of TCM and Western therapy group, with statistical significance (P<0.05). After three-month treatment, 1, 0 and 11 cases relapsed in TCM group, TCM and Western therapy group and Western therapy group, respectively, with statistical significance (P<0.001). Compared with the Western therapy group, the number of colds in the TCM group and TCM and Western therapy group significantly decreased (P<0.05). Compared with before treatment, IgE decreased significantly (P<0.05). There was no significant difference in EOS among the three groups before and after treatment (P>0.05). After treatment, the maximum expiratory flow in TCM and Western therapy groupwas higher than that before treatment and lower than that in the Western therapy group (P<0.01), and the other lung function indexes were not statistically significant (P>0.05). 1 mild adverse reaction was found in the TCM and Western therapy, and no obvious adverse reactions were found in other groups (P<0.05).ConclusionTiaozhong Yifei Prescription has good clinical efficacy for CVA.

OBJECTIVETo understand the pathogenic effect and the correlation between the genotype and phenotype of the 4 novel missense mutations (G247S, E280G, P362T and A434D) of phenylalanine hydroxylase gene (PAH).

METHODS(1) The enzyme activity of the 4 mutants was assessed by using transient protein expression in mammalian cells. (2) The PAH amino acid sequences among different animal species were alignmented. (3) The effects of the 4 missense mutations on the protein structure were analyzed. (4) The clinical phenotype of the patients with PKU were analyzed, according to their blood Phe levels prior to treatment and the Phe tolerance.

RESULTS(1) The residual enzyme activity expressed in vitro of G247S, E280G, P362T and A434D were 3.1%, 0.4%, 8.2% and 21.7% of the wild-type PAH respectively; (2)Gly247, Glu280 and Pro362 were among the highly conserved amino acids, while Ala434 was only moderately conserved; (3) As revealed by 3D structural analysis, G247S and E280G, being located at the active center of the enzyme, interfered with the binding of PAH to BH4 and ferrousion respectively, while P362T and A434D affected the formation and stability of the dimer and the tetramer of PAH; (4) As shown by clinical phenotypic analysis, classical PKU were observed in patients carrying G247S and E280G, moderate PKU were observed in patients carrying A434D, whereas both classical and moderate PKU were observed in patients carrying P362T.

CONCLUSION(1) The E280G, G247S, P362T and A434D are all disease-causing mutations, with those located at the center of the enzyme displaying the most marked pathogenic effect; (2)The results of the structural analysis of the 3D molecule are consistent with the activity assessment of the enzyme expressed in vitro; (3) The consistency is observed between the genotype, the enzymatic activity expressed in vitro and the clinical phenotype.

Amino Acid Sequence ; Animals ; Child ; Child, Preschool ; Female ; Gene Expression ; Genotype ; Humans ; Infant ; Infant, Newborn ; Male ; Models, Molecular ; Molecular Sequence Data ; Mutant Proteins ; chemistry ; genetics ; metabolism ; Mutation, Missense ; Phenotype ; Phenylalanine Hydroxylase ; chemistry ; genetics ; metabolism ; Phenylketonurias ; enzymology ; genetics ; Protein Conformation ; Sequence Alignment ; Structure-Activity Relationship

Nerve block is a technique for anesthesia and pain management,which is realized by blocking nerve conduction in a specific nerve area with local anesthetic drugs.Compared with general anesthesia,nerve block has many advantages,which can provide local and selective analgesic effect,and meanwhile reduce complications and drug side effects related to general anesthesia.Dexmedeto-midine is a type of α2 adrenergic receptor agonist,and as a potential adjuvant,dexmedetomidine has been widely applied in nerve block.Dexmedetomidine has sedative,analgesic and anti-anxiety effects,and can be used in combination with local anesthetics to enhance the effect of nerve block.In this paper,the clinical effects of dexmedetomidine as an adjuvant of nerve block in various parts are reviewed,and application in maxillofacial nerve block and stellate ganglion block was added in order to provide reference for nerve block anesthesia and analgesia.

Nerve block is a technique for anesthesia and pain management,which is realized by blocking nerve conduction in a specific nerve area with local anesthetic drugs.Compared with general anesthesia,nerve block has many advantages,which can provide local and selective analgesic effect,and meanwhile reduce complications and drug side effects related to general anesthesia.Dexmedeto-midine is a type of α2 adrenergic receptor agonist,and as a potential adjuvant,dexmedetomidine has been widely applied in nerve block.Dexmedetomidine has sedative,analgesic and anti-anxiety effects,and can be used in combination with local anesthetics to enhance the effect of nerve block.In this paper,the clinical effects of dexmedetomidine as an adjuvant of nerve block in various parts are reviewed,and application in maxillofacial nerve block and stellate ganglion block was added in order to provide reference for nerve block anesthesia and analgesia.