Objective To establish a new post-embedding immunoelectron microscopy method for localization of protein antigens in central nervous system using colloidal golds as probes.Methods Rat brain tissue sections were fixed with osmium-ferrocyanide mixture.Free floating frozen sections were collected to determine the retrievability of antigens by sodium metaperiodate(NaIO_(4)).Then the best concentration of NaIO_(4) for maximal antigen retrieval was determined on hydrophilic Technovit 7100 resin-embedded semithin sections.Finally,the corresponding antigen was labeled with colloidal golds on ultrathin sections.Results NaIO_(4) showed different retrieving effects on different antigens;to those antigens that could be effectively retrieved by NaIO_(4),low concentration of NaIO_(4)could realize antigen retrieval;EM microscopy showed that ultrathin sections treated by low concentration of NaIO_(4) allowed higher density of colloidal gold labeling without apparently compromising the ultrastructures of tissues.

Objective By discussion on the construction of school-community health education network,we can identify suitable community practice ways of improving students' comprehensive ability,enrich community health teams and meet the health demand of community residents.Methods Take Grade 08 and Grade 09 as the test classes.Two classes were selected from each grade,one class was set as the experimental group,the other was named as the control group.The communication skills,critical thinking skills,teamwork skills and the ability of getting the specific knowledge after the community practice for a year were compared between the two groups in each grade separately.At the same time,we assessed the community residents from the following four aspects,knowing about the health information,residents' health beliefs,their change in attitude,their adoption of healthy behaviors,and compared their knowledge of health information about three diseases.Results The results showed that the four mentioned abilities of the experimental groups were significantly improved.The community residents' health information awareness rate after the health education was significantly different compared with that before.There was no significant difference among three other levels.Conclusions Construction of school-community health education network can improve the students' comprehensive quality,it is beneficial to the survival and the development of health schools,and it can meet the needs of community residents,enrich the community health service team,and can also promote the change of teaching ideas.

Objective To study the expression pattern of RYK in the pathway of developmental corticospinal tract projection and provide hints for further study on RYK's function involved in this processes.Methods By In situ and immuno-fluorescence histochemistry,we examined the RYK expression pattern in the developmental murine motor cortex and the projection of corticospinal tract at various time points of E14.5、 E16、E18.5 and postnatal P3、 P5、P7.Results The motor cortex the RYK expression started at E18.5 stage and enhanced gradually at P0 stage.Moreover from P0 to P5 stage the RYK expression also appeared in the pathway of developmental corticospinal tract and decreased gradually after that.Conclusion RYK's expression is closely related to the corticospinal tract projection during its development stage.

Objective To study the correlation between storage time and the content of 5-hydroxymethylfurfural (5-HMF) in Corni Fructus because of the color change caused by storage time. Methods Corni Fructus samples of different storage time with 0, 1, 2, 3, and 4 years were collected. The contents of 5-HMF were determined by HPLC. Results The HPLC determination method of 5-HMF in Corni Fructus was established. The contents of 5-HMF varied from undetected value to 0.292 8%, with the increase of storage time of 0, 1, 2, 3, and 4 years and the color gradually deepened from red, dark red, reddish brown to brown. The contents of 5-HMF in black wine-prepared Corni Fructus were 0.954 4%-1.837%. Conclusion The browning of Corni Fructus is related to the production of 5-HMF. With the extension of storage time of Corni Fructus, the color gradually deepens and the content of 5-HMF increase significantly. The storage time of Corni Fructus can be suggested to be one year.

Objective To study changes of expression in Ephrin and its receptors in DRG neurons after peripheral nerve injury. Methods A rat model of unilateral crushed sciatic nerve was prepared, and changes in the expression pattern of Ephrin B1, Eph B1、Eph B2、Eph B3、EphA4 and RYK in DRG neurons in the rats crushed unilateral sciatic nerve were estimated by the number of positive staining cells in DRG, and the percentage of positive cells as well as the cell size.Results After peripheral nerve injury, the expression of Ephrin B1 significantly decreased, but there was no change in expression of Eph B1、Eph B2、Eph B3 or Eph A4, RYK expression was intensely induced in DRG neurons. Conclusion Ephrin B1 and RYK showed very significant expression changes in ERG neurons after peripheral nerve injury, and may be a component factor process of peripheral never regeneration.

OBJECTIVE:To observe clinical efficacy and safety of Modified xiaohuang paste in the treatment of paralytic ileus after thoraeolumbar fractures.METHODS:One hundred and thirty-eight patients with paralytic ileus after thoracolumbar fractures were divided into control group (group A,43 cases),Xiaohuang paste group (group B,47 cases) and Modified xiaohuang paste group (group C,48 cases).Group A was given routine treatment as fasting,gastrointestinal decompression,fluid replacement,nutritional support;group B was additionally given Xiaohuang paste on the basis of group A;group C was additionally given Modified xiaohuang paste on the basis of group A.Group B and C were given relevant paste every 12 h until intestinal peristalsis was recovered and gas exhausted from anus,at the most for 5 days.The improvement time of clinical symptom improvement,VAS score and CRP level were compared among 3 groups as well as the occurrence of ADR.RESULTS:After treatment,the time of gastrointestinal decompression,bowel sound recovery and passage of gas by anus in group B and C were significantly shorter than group A,and group C was significantly shorter than group B,with statistical significance (P＜0.05).Before treatment,there was no statistical significance in VAS score and CRP level among 3 groups (P＞0.05).After treatment,VAS score of abdominal pain and distension,CRP level of 3 groups were decreased significantly compared to before treatment;those of group C were significantly lower than group A and B,and CRP level of group B was significantly lower than that of group A,with statistical significance (P＜0.05).There was no statistical significance in VAS score between group A and B (P＞0.05).No significant ADR was found in 3 groups.CONCLUSIONS:For paralytic ileus after thoracolumbar fracture,Modified xiaohuang paste can significantly shorten treatment duration,relieve abdominal distension and pain,inflammation with good safety.

Objective To study the effects of repeated hypoxic exposures (HEs) on glycolysis, mitochondrial oxi-dative phosphorylation and energy charge in mouse brain. Methods Adult BALB/c mice were repeatedly exposed to hypoxia for 5 times and the standard tolerant time and body temperature were recorded. The activities of PFK, PK and mitochondrial complex Ⅰ in the brain were assayed. Phosphoadenosines and energy charge were measured. Results Repeated HEs prolonged the hypoxic tolerance and reduced the body temperature. The activities of PFK and PK experienced regular changes, with an increase in 1st and 3rd HEs and a decline to control levels in 5th HE. The complex Ⅰ activity continued to decrease during HEs. The energy charge was stable. Conclusion HEs lead to a regular change of glycolysis, a continued inhibition of mitochondrial oxidative phosphorylation, and a main-tained energy charge in the brains of mouse.

Purpose To develop a national registry and reporting system of individual monitoring for workers occupationally exposed to ionizing radiation.Methods In accordance with the relevant law,regulations,standards and the current health supervision practice for radiation workers in China,to ensure more effective collection of information on individual monitoring from all levels of service providers across the country and an easy query and analysis of the collected information for both service providers and administrative institutions,the register consisted of an offline-system and a web-based information system.The off-line system consisted of 8 tables,which could easily make annual and period monitoring reports,and upload individual monitoring data in compressed and encrypted format.Web-based system consisted of 6 modules,could easily make S customized tabulations of monitoring data and show 2 trend figures.SSLVPN secure remote access was used in the system.Arranged by the Ministry of Health,training courses provided to all individual monitoring service providers and provincial administrative institutions.Results A new and individual-based national register and reporting system of individual monitoring for workers occupationally exposed to ionizing radiation was successfully developed,and would be officially run soon.Conclusions The establishment and running of the register would be great improvement on the national radiological health reports and produce a far-reaching impact on the individual monitoring in China.

Objective To screen for the potential protein biomarkers in serum for the diagnosis of idiopathic Parkinson's disease (PD) using proteomic fingerprint technology. Methods Proteomic fingerprint technology combining weak cation exchange (WCX) magnetic beads with MALDI-TOF-MS was used to identify and compare the serum proteins from 61 patients with idiopathic PD, 29 patients with other neurodegenerative diseases (OND) and 30 healthy blood donors. Model of biomarkers and proteomics patterns associated with PD was analyzed by Biomarker Patterns Software. The model also was validated by 40 newly recruited PD cases. Results A total of 17 discriminating M/Z peaks which were related to PD were identified ( nonparametric test, Z:-4.039--2.633, P<0.01 ). Five biomarkers with M/Z of 6121, 5234, 2961,4309 and 8170 respectively generated an excellent model of distinguishing between PD and healthy groups. The sensitivity was 98.4% and the specificity was 83.1%. Blind testing in 40 newly recruited cases demonstrated a sensitivity of 85.0% (17 of 20 PD) and a specificity of 70. 0% (14 of 20 controls). Conclusions Combination of WCX magnetic beads with MALDI-TOF-MS is a useful method in establishing proteomic patterns associated with PD. It also may be used to construct a diagnostic model with PD Biomarkers. Although this model of biomarkers fails to distinguish between PD and OND controls, it is able to differentiate PD from healthy controls.

Objective To evaluate the quality coherence of commercial Angelicae Dahuricae Radix (Baizhi) decoction pieces. Methods The samples of 12 batches of commercial decoction pieces, 1 batch of sulphur fumigated Baizhi, and 1 batch of naturally dried Baizhi were collected. HPLC method was used to determine the fingerprints and the contents of imperatorin and isoimperatorin by C18 column (4.6 mm×250 mm, 5 μm) with a gradient mobile phase of acetonitrile-water solution system at the flow rate of 1.0 mL/min. The column temperature was set at 35 ℃, and the max plot of detection wavelength was in 210-800 nm. Similarity calculation was used to analyze the data. Results The HPLC fingerprint analysis method was established with 12 common peaks. The similarities of 12 batches of commercial decoction pieces of Baizhi were 0.840-0.973. Their similarities compared with the sulphur fumigated Baizhi were 0.672-0.908. Compared with naturally dried Baizhi, the similarities of fingerprint were 0.536-0.684. The contents of imperatorin and isoimperatorin in 12 batches of commercial decoction pieces were 0.035%-0.140% and 0.028%-0.069%, respectively. Conclusion The quality of Baizhi decoction pieces was consistent. It can be speculated that Baizhi decoction pieces were processed with sulphur fumigation.