Antiviral Agents ; therapeutic use ; Child ; Deoxyribonuclease (Pyrimidine Dimer) ; therapeutic use ; Humans ; Immunization, Passive ; Infant ; Picornaviridae Infections ; drug therapy ; therapy ; Respiratory Syncytial Virus Infections ; drug therapy ; therapy ; Ribavirin ; therapeutic use

Objective To investigate the trend of developmental expression of GluR2,subtype of alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid(AMPA) receptor and synaptophysin(SYP) in the rat cochlear nucleus(CN) in different developmental stages,and explore the association of GluR2 expression with the development of synapse. Methods SD rats of 2,3,4,6,8 and 10 weeks old were selected,the expression of GluR2 and SYP in CN was detected with immunofluorescence histochemical method,and the association of them was explored. Results GluR2 expression was observed in all the neurons of CN in each postnatal groups.The expression was relatively weaker in the second and third week,became denser in the fourth week,reached the peak in the sixth week and then sharply decreased to the weakest in the tenth week.The expression of GluR2 was denser at granular cell layer,while weaker at molecular layer and multipolar cell layer in the dorsal CN.SYP expression was detected in all the neurons of CN in each postnatal groups.The expression was weakest in the second week,significantly denser in the fourth week,reached the peak in the sixth week,was then sharply decreased and stably maintained. Conclusion The expressions of GluR2 and SYP in the postnatal rat CN exhit an equally age-dependent tendency.The expression of GluR2 in the CN may be associated with the the maturation and function development of the CN.The different expression and distribution of GluR2 and SYP in the rat CN of different developmental stages may be involved in the development and plasticity of auditory center.

Objective To investigate prevalence of metabolic syndrome (MS) and its related factors in patients with maintaining hemodialysis (MHD). Methods A total of 162 cases on MHD in Beijing Chaoyang Hospital during June to December 2010, were enrolled in this study and divided into MS group and non-MS group according to the diagnostic criteria for MS set by the International Diabetes Federation. Anthropometric and blood biochemical characteristics of the two groups were compared with t-test and x2 test Risk factors for MS were explored with binary logistic regression analysis. Results Prevalence of MS was 40. 7% (66/162) . There was significant difference found in body mass index [(24. 2 ±3. 1) vs. (21. 6 ±2. 7) kg/m2], waistline circumference[(93 ±8) vs. (79 ±7)cm] , white blood cell count [(6. 8 ± 1. 5) × 109/L vs. (5. 6 ± 1. 4) × 109/L] , hypersensitive serum C-reactive protein [(7 ± 5)vs. (4 ±3) mg/L], high-density lipoprotein-cholesterol [(0. 99 ±0. 26)vs. (1.39 ±0.39) mmol/L], low-density lipoprotein-cholesterol [(2. 5 ± 0. 8) vs. ( 2. 1 ± 0. 7) mmol/L], triglyceride ( TG) [( 2. 1 ±1.1 )vs. (1.3±0.8) mmol/L], fasting blood glucose [(5.9±2. 7)vs. (4.8±1.3) mmol/L], serum level of iron [(16±7)vs. (13 ±5) μmol/L], uric acid [(429±114) vs. (388±88) (μmol/L], and carbon dioxide combining power (CO2CP) [(22 ±4)vs. (23 ±4) mmol/L]between MS group and non-MS group (All P < 0.05 ) . But there was no significant difference found in subjective global assessment of nutritional status (SGA) , thickness of skin fold of the triceps muscle (TSF) between the two groups (Both P > 0.05). Binary logistic regressive analysis revealed that serum level of iron (OR = 1.058,95% CI = 1.001 -1. 119), white blood cell count ( OR = 1. 786,95% CI = 1. 346 - 2.371) and hypersensitive serum C-reactive protein (OR = 1. 101,95% CI = 1.010 - 1.201 ) were independent risk factors for MS in MHD patients. Conclusions Morbidity of MS is high in patients with MHD, involved with inflammation process. Serum level of iron, white blood cell count and hypersensitive serum C-reactive protein are independent risk factors for MS in patients with MHD and no inevitable connection between MS and nutritional status in them is found.

OBJECTIVE: To design an electronically controlled hydraulic damper cylinder as a key part of the computer-controlled intelligent knee joint.METHODS: According to the characteristics of hydraulic fluids and processing technology, new type of micro-structure of the digital throttle and unique structure of the two-cylinder piston had been applied to the damper. It could control extension and flexion of the knee joint in two-way automatically, which improved the gait symmetry of artificial limb. Finally, a special self-made testing device was used to evaluate the performance of the hydraulic damper. The damping force adjustment was simulated in test by controlling the two needle valves with micro-computer. The kinematics speed was detected under different state of simulating the driving moment of hip joint and the damping moment of knee joint. The testing results indirectly built the dynamics relationship among the inertial force, damping force and the swing speed of the knee joint. RESULTS: When the position value X of the needle valve was reduced by the step motor driving, the resistance of the hydraulic cylinder was increased which resulted in faster speed of the cylinder rod. The sensitivity of the speed to the driving force decreased with the opening of needle valve increasing. When the stepping motor controlled the needle valve closer, the damping moment increased which led to a faster swing speed.CONCLUSION: The design of hydraulic damper cylinder meets the requirements of prosthetic knee dynamics control.

Child ; Congresses as Topic ; Humans ; Pediatrics

OBJECTIVE: To observe the changes of volt-ampere characteristics of Yuan-Primary acupoints in women before, during and after menstruation, and to find out the relationships between Qi-blood in human body and volt-ampere characteristics of acupoints, so as to develop a new method for quantitative analysis on changes of Qi-blood. METHODS: A high-sensitive detection system of volt-ampere characteristics of acupoint was applied to detecting the volt-ampere characteristics of Taiyuan (LU 9), Daling (PC 7) and Shenmen (HT 7) in healthy women before, during and after menstruation. RESULTS: The resistances on LU 9, PC 7 and HT 7 with some certain scan currents were quite different among the women before, during and after menstruation. For such changes, PC 7 was of the most obvious change, LU 9 was of the less and HT 7 was of the least. The total ratio of the scanning spots with significantly increasing changes of resistances on these three acupoints along with the menstrual process was 70.6%. CONCLUSION: The volt-ampere characteristics of acupoints vary with the menstrual process, which is of the acupoint specificity. The resistances on the acupoints increase with the menstrual process, and such results may be due to the blood loss during menstruation. The volt-ampere characteristics can be used as a quantitative index to study on the change of Qi and blood.

BACKGROUND:With the continuous development of medical model, high-level treatment and rehabilitation for bone defects are required. Therefore, bone tissue engineering technique based on stem cel culture has become a more important component of bone defect repair.
OBJECTIVE:To explore and analyze the feasibility of alogeneic adipose-derived stem cels combined with nano colagen-based bone for repair of ulna bone defects.
METHODS:Seventy adult female New Zealand rabbits were selected, 10 of which were used to isolate and culture adipose-derived stem cels, another 60 were randomized into scaffold group, scaffold+bone autograft group, scaffold+alogeneic adipose-derived stem cels group, with 20 rabbits in each group. The middle part of the ulna was resected to construct 12-mm bone defect models in the three groups, and then, corresponding materials were implanted. At 6, 9 and 12 weeks after implantation, bone mineral density was detected; at 14 weeks after implantation, the rates of solid fusion rate, non-solid fusion, and false joint were observed.
RESULTS AND CONCLUSION:Compared with the other two groups, the rate of solid fusion was significantly higher and the rates of non-solid fusion and false joint were lower in the scaffold+alogeneic adipose-derived stem cels group (P < 0.05). Compared with the scaffold group, the rate of solid fusion was higher and the rates of non-solid fusion and false joint were significantly lower in the scaffold+bone autograft group (P< 0.05). The bone mineral density increased dramaticaly at 6, 9, 12 weeks after implantation of scaffold+alogeneic adipose-derived stem cels, which was significantly higher than that in the scaffold group and scaffold+bone autograft group (P < 0.05). Compared with the scaffold group, the bone mineral density in the scaffold+bone autograft group was significantly higher (P < 0.05). These findings indicate that alogeneic adipose-derived stem cels combined with nano colagen-based bone has exact fusion effects with a higher bone mineral density.

Objective To study the efficacy of immunization combination of pregnant women and infants in preventing intrauterine HBV infection. Methods One hundred and twenty six HBsAg positive pregnant women were divided into two groups randomly.In the combination group,126 cases were injected with hepatitis B immunoglobulin(HBIG) during pregnancy since the 28 th week of gestation and HBVac 20 ?g at 1、2、7 month combining HBIG 200 IU at 0、15 day was injected to their infants, while 90 cases pregnant women in control group were not injected with HBIG. The serum HBV IgM of pregnant women and infant were tested using ELISA and was followed up for one year. Results The incidence of intrauterine HBV infection and the rate of chronic HBV infection in the infants of combination group were significantly lower than that of the control group (19.51% vs 35.56%, 13.33% vs 3.97% respectively). The detection rate of anti HBs in newborns and protective anti HBs in 1 year were significantly higher in combination group than that in the control group (80.95% vs 0,96.03% vs 86.67%). Conclusion Combining therapy of pregnant women and infant may prevent intrauterine HBV infection effictively and increase the rate of success immunoprophylaxis significantly, and decrease the rate of chronic HBsAg infection.

Objective In this study,we aimed at investigating the clinical,laboratory and management characteristics of adolescent-onset SLE patients compared with adult-onset SLE patients.Methods 470 fe- male patients with SLE were divided into two subgroups:adolescent-onset SLE patients and adult-onset SLE patients.The analyzed variables included clinical,laboratory parameters,damage index and outcome charac- teristics.Results In 470 female patients with SLE,there were 98(20.85%)adolescent-onset SLE patients. The following manifestations occurred more frequently in adolescent-onset SLE patients:malar rash,cutaneous vasculitis,proteinuria and abnormal liver function.Adolescent-onset SLE patients had more severe disease features and had significantly higher mean value of SLEDAI.Mortality was higher in adolescent-onset SLE pa- tients than aduh-onset SLE patients.Renal and blood system were the organs that most frequently involved. Conclusion Adolescent-onset SLE patients accounts for roughly 20.85% of all SLE cases.It is necessary to pay more attention to adolescent-onset SLE patients because the management for them is usually more difficult and the prognosis is usually poorer than aduh-onset SLE patients.

Objective: To analyse the nutritional components and flavorous substance of the white yak,s milk. Method: In collecting the raw milk of eighteen white yaks,dry substance,protein,fat and ash were detected by routine methods;mineral elements by ICPV-1000S inductively coupled plasma atomic emission spectroscopy,amino acids by 835-Shimadzu amino acid analyzer,volatile substances by GC-MS. Results: The milk of white yak contained dried substance (18.38%),protein (6.53%),fat (5.64%),minerals (0.87%), TAA(6.36%), EAA(2.56%),two limiting amino acids (Met and Trp), EAA / TAA (40.25%), EAA/ NEAA (67.37%); seven flavorous substances: esters, alcohols,ketones and aldehydes,etc. Conclusion: The milk of white yak has distinct propertis: high protein,high fat,high energy,abundant minerals,agreeable flavor,abundant amino acid. So the milk of white yak is an excellent nutritional resource.