Twelve girls aged 11-13 years during late puberty were treated by recombinant human growth hormone (rhGH) with the dosage of 0.10～0.12 IU?kg -1 ?d -1 for 6 months. Their body height were increased after the treatment.

Objective:To clone and express the Der f 7 recombinant protein from Dermatophagoides farinae and prepare the Der f 7 monoclonal antibody.Methods: The Der f 7 recombinant protein was expressed in prokaryotic expression system of pET28a(+)-Der f 7.BALB /c mice were immunized with the recombinant protein.Myeloma cells and spleen cells were fused,and hybridoma cells were screened by ELISA.Hybridoma cells were injected into the mice abdominal cavity to obtain ascites.It was purified by protein A agarose medium ascites,and then to dentified the titer and purity of the antibody.The specificity of the antibody was identified by Western blot.Results: Three hybridoma cells which stably secret recombinant Der f 7 monoclonal antibody were obtained.The monoclonal antibody had high purity,the titer was higher than 1∶243 000.Western blot showed that Der f 7 recombinant protein could be recognized well.Conclusion: We successfully obtained Der f 7 monoclonal antibody,which can be used for the quantification and localization of Der f 7 allergen and the diagnosis and treatment of allergic diseases.

Objective: The goal of this research was to explore the relationship among attachment to parents,perceived academic achievement and self-esteem in high school students. Methods: High school students from four areas completed the following four questionnaires: Relationship Questionnaire(RQ),Experiences in Close Relationships Inventory(ECR),Self-esteem(SES) and Perceived Academic Achievement. Results: ①The scores of perceived academic achievement in students with attachment preoccupied to father were significantly lower than those with attachment dismissed to father. ②Attachment avoidance to father,attachment anxiety to father and self-esteem were positive correlated to perceived academic achievement (r=0.195,0.166 and 0.325). ③Attachment avoidance could predict the scores of perceived academic achievement. Conclusion: There are close relationship between adult attachment to father and perceived academic achievement,and self-esteem.

purpose To investigate the protective effect and character of dl-praeruptorin A(Pd-Ia)on focal cerebral ischemia in mice.Methods Transient focal cerebral ischemia in mice WaS induced by middle cerebral artery occlusion for 1.5 h.Pd-Ia was administered intraperitoneally either with multiple doses(1,5 and 10ms/ks)at 0.5 h before ischemia or single dose(5 ms/kg)at 0.5 h and 1 h before ischemic,the same time of ischemia,the same time of reperfusion,or 0.5 h and 1 h after reperfusion respectively.Neurological deficit score,infarct volume,brain edema,the activities of SOD and the contents of MDA were determined.Results Pretreatment with multiple doses(5 and 10 ms/ks)of Pd-Ia at 0.5 h before ischemia or single dose(5 mg/kg)of Pd-Ia at 0.5 h before ischemia,at the same time of ischemic,at the same time of reperfusion and 0.5 h after reperfusion significantly attenuated neurological deficit score,decreased infarct volume and alleviated brain edema,and the treatment at the time of reperfusion had the most marked effect.Pd-Ia(5 or 10 ms/ks)can significantly enhance the activities of SOD and lower the contents MDA.Conclusion dl-praeruptorin A has a neuroprotective effect on the injury in the acute phase of transient focal cerebral ischemia in mice,with optimal doses of 5 ms/ks and the optimal therapeutic time point of the same time of reperfusion.

Objective To determine the factors that influence the development of abnormal thyrotropin (TSH) level in an euthyroid population.Methods We conducted a follow-up study in 3 communities with different iodine status.Of the 3403 euthyroid subjects at baseline screened in 1999,80.1% ( n = 2727 ) was visited and sampled in 2004 for measuring TSH,thyroid peroxidase antibody (TPOAb) and thyroglobulin antibody (TgAb).Results Iodine status in the 3 communities were stable.Decreased TSH level( <0.3 mU/L) developed in 2.5% (n =68) of sampled subjects,while raised TSH level( > 4.8 mU/L) in 2.4% (n = 64).A logistic analysis showed that risk factors for developing decreased TSH level included positive conversion of TPOAb (OR = 5.5 ),positive TPOAb both in 1999 and in 2004 ( OR = 4.0),positive TgAb in 2004 ( OR = 3.7) and TSH < 1.0 mU/L in 1999 ( OR = 2.6).Risk factors involved in developing raised TSH level included iodine status of Zhangwu community ( OR = 4.1 ),iodine status of Huanghua community ( OR = 3.9),positive TgAb in 2004 ( OR = 3.7 ),positive TPOAb both in 1999 and 2004 (OR =3.6),positive conversion of TPOAb (OR =2.7) and TSH > 1.9 mU/L in 1999 (OR = 2.6 ).Conclusions Exposure to long-term iodine excess imposes danger of developing hypothyroidism.The risk will be even higher when exposing to iodine adequacy after correction of iodine deficiency.An interval between 1.0 and 1.9 mU/L of TSH level was optimul with the least probability of developing abnormal TSH level.

Objective:To compare structure and function of mite Der f 3,Der p 3 and Eur m 3.Methods: Obtained mite allergens amino acid sequences from the International Union of Immunological Societies nomenclature database .Then physiochemical characterization,sequence alignment,secondary structure,three dimensional (3D) structure and epitopes of three proteins were analyzed by bioinformatics methods.Results:According to results of alignment ,Der f 3,Der p 3 and Eur m 3 displayed 88.51%sequence iden-tity.Der f 3,Der p 3 and Eur m 3 all contained three active sites and two trypsin functional domains ,which showed high identity of amino acid residues.Active sites of three proteins ,which closing to each other in three dimensional (3D) structure,constituting the active center of the enzyme.Secondary and 3D structure of three proteins all contains α-helices,β-sheets and random coils.Epitopes analysis revealed that Der f 3,Der p 3 and Eur m 3 all have 5 main potential epitopes located in random coils.Epitope sequences of Der f 3,Der p 3 and Eur m 3 overlapping in three domains (peptides of 79-81aa,129-135aa and 172-174aa),but the residues in these three domains were not identical.Conclusion:These studies lay the foundation for biochemical and genetic analysis of these 3 allergens,and may contribute to vaccine development for allergen-specific immunotherapy.

To design a new method to simulate the micro-motion of human body surface due to respiration and heartbeat, and to provide detection object and calibration signal for the bio-radar technology. Precision lin-ear module was used to transform rotational movement to linear displacement, with AC servo motor to precisely control the module's rotation. Ultimately, ultralow-frequency micro-motion was produced with its displacement being quantitatively controlled. A system simulating the micro-motion of human body surface was newly built. Compared with the old system, the new one produced micro-motion with better constancy, and realized quantitative control of the motion's dis-placement. The method lays technological foundation for simulating the micro-motion of human body surface due to respiration and heartbeat and may promote the development of bio-radar technology towards intensive and compre-hensive levels.

BACKGROUND:Steroid-induced osteonecrosis of the femoral head (SONFH) is a common bone disease characterized as high morbidity and poor prognosis,but the pathogenesis is unclear.Oxidative stress treatment is closely related to the occurrence and development of SONFH,and has tremendous potential in the treatment of SONFH,which can be realized by Nano-Se.OBJECTIVE:To observe the protective effect of porous Se@SiO2 nanocomposite on chondrocytes by antioxidant stress,and to further explore its mechanism of protection and treatment of SONFH.METHODS:(1) In vitro experiment:The rat chondrocytes were isolated,cultured and identified.Then,the chondrocytes were cultured with porous Se@SiO2 nanocomposite to suppress the production of reactive oxygen species (ROS).(2) In vivo experiment:A total of 36 rats were randomly divided into three groups.Steroid-induced group and experimental group were treated with intraperitoneal injection of lipopolysaccharide and intramuscular injection of methylprednisolone to induce SON FH models.Seven days after modeling,the experimental group was intraperitoneally injected with porous Se@SiO2 nanocomposite.No intervention was done in control group (blank control).At 8 weeks after modeling,rat bilateral femoral heads were taken for hematoxylin-eosin staining and Micro-CT scanning.RESULTS AND CONCLUSION:Results from the ROS detection and TUNEL apoptosis tests showed that the level of ROS in the chondrocytes was significantly reduced after intervention with Se@SiO2 (P ＜ 0.05).Micro-CT scanning findings showed that the bone mineral density,bone volume,bone area/bone volume,trabecular number,trabecular thickness,and trabecular separation in the steroid-induced and experimental groups were significantly different from those in the control group (P ＜ 0.05).Hematoxylin-eosin staining results showed smooth femoral head,normal bone cells,chondrocytes and trabecular bone,as well as few empty bone lacunae and fat cells in the control group,while in the steroid-induced group,there was bone trabecular fracture,fat cell hypertrophy fusion,a large number of empty bone lacunae and obvious osteonecrosis.These manifestations were significantly improved in the experimental group.To conclude,the porous Se@SiO2 nanocomposite has good antioxidative stress ability,suppresses the ROS production and exerts therapeutic effects on SONFH.

OBJECTIVE:To study the preventive effect of Lonicera japonica alcohol extract on mice with liver injury based on metabolomics method. METHODS:30 mice were equally randomized into a normal control (isometric normal saline) group,a model(isometric normal saline)group and a group of L. japonica alcohol extract(2 g/kg). The mice were given drugs by ig once a day for 14 consecutive days. On the 8th day of administration,the models were established by giving 0.2% dimethyl sulfoxide (DMN,10 ml/kg)ip once a day for 7 consecutive days. Gas chromatography-mass spectrum(GC-MS)was used to analyze 24 h total ions chromatogram of the urine sample on the 1st,3rd,5th and 7th day of administration of drugs and DMN. The change in endogenic small molecule metabolites in urine was observed. Principal component analysis was employed to explore the change in the metabolite chromatogram and underlying biomarkers in urine. RESULTS:The contour of the chromatogram changed to a largest extent 1 to 5 d after given DMN,but showed an obvious trend towards regression 7 days thereafter. DMN resulted in increase in the contents of 8-phenyl-8-azbicyclo-[4,3,0]non-3-ene-7,9-dione,2-(6-heptynyl)-1,3 dioxolane,bis-(O-methyloxime)-4-ketoglu-cose,and decrease in the contents of malonic acid,2-(4- chlorophenylthiomethoxyl)ethyl,tetrahydro-2-furanacetaldehyde,D-ga-lactose,erythro-pentonic acid and galacturonic acid,in endogenic small molecule metabolites in mouse urine,for which Lonicera japonica alcohol extract can improve that. CONCLUSIONS:Previous administration of L. japonica alcohol extract ig has preven-tive effect to some extent on the physiological and metabolic conditions of mice with liver injury induced by DMN.

Objective To observe the effect of Arm Spasticity Inhibitor worn in rehabilitation training on patients with upper extremities spasticity and shoulder subluxation after stroke. Methods 80 stroke patients with flexor spasm in upper extremities complicated with subluxation of shoulder were divided into treatment group and control group equally. Both groups accepted routine medicine and rehabilitation, and the treatment group wore the Arm Spasticity Inhibitor developed ourselves during the rehabilitation training. Their acromio-humeral interval (AHI) was measured with the X- ray; and they were assessed with modified Ashworth Scale (MAS), range of motion of shoulder (ROM) and elbow before and 2 months after treatment. Results It improved more in the AHI, score of MAS and ROM in the treatment group than in the control group after treatment (P<0.001). Conclusion Wearing Arm Spasticity Inhibitor during rehabilitation training may release the spasticity of upper extremities and shoulder subluxation, and improve shoulder function in patients after stroke.