Objective To analyse and conclude the MRI features of intracranial germ cell tumours so that to improve the diagnosis of this disease.Methods 15 cases of germ cell tumours verified by operation and pathology were reviewed and analyzed. All cases were undergone plain and contrast-enhanced MRI,the fat restrained sequence was performed if necessary. Results The location of tumors,six were in pineal region, six were in sellar region (germinoma, teratoma and choriocarcinoma in pineal and sellar region were all separately 3, 2 and 1), two were in basal ganglia (germinoma), and one was in right lateral ventricle (teratoma).Conclusion MRI is very valuable in the diagnosis and differential diagnosis of intracranial germ cell tumours.

Objective To investigate the involvement of Bcl-2 and Bax mRNA expressions in mitochondrial toxin 3-nitropropionic acid(3-NPA)induced ischemic tolerance to focal cerebral ischemia in rats.Methods Rats were administrated 3-NPA intraperitoneally at dose of 20 mg/kg 3 days prior to a 2 h middle cerebral artery occlusion followed by 1 h,6 h,12 h,24 h and 48 h of reperfusion.The Bcl-2 and Bax mRNA expressions were measured by reverse transcriptase polymerase chain reaction and compared to the sham operation group and ischemic reperfusion group.Results Compared to the sham operation group,the ischemic reperfusion and 3-NPA pretreated groups exhibited an increase in Bcl-2 and Bax mRNA after reperfusion every time point of focal cerebral ischemia(all(P

[Objective]To investigate the capability of synthesis BMP-2-derived peptide on osteogenic induction in bone marrow stem cells(BMSEs),and to evaluate the osteoinductivity of BMP-2-derived peptide in vitro.[Method]After segregating and cultivating four weeks Wistar rats marrow stromal cells in induction group were induced by osteogenasis medium containing 200 gg/ml BMP-2-derived peptide,and in non-inductional group BMSCs were still culture with DMEM medium.Following continue culture for 2~4 weeks,cells film preparation,alkaline phosphatase activity and calcium deposition were measured.Type I collagen(CoM)and osteopontin(OPN)mRNA expression were measured using real-time fluorescent quantitative polymerase chain reaction(FQ-PCR)technique.The capability of synthesis BMP-2-derived peptide on osteogenic induction of BMSCs was investigated.[Result]After inductived with BMP-2-derived peptide.BMSCs cultured survived well greatly changed in cell morphology,and showed a biological and morphologie characteristics similar to those of osteoblasts.The lever of alkaline phosphatase activity and calcium deposition increased.Col-Ⅰand OPN mRNA were expressed at higher level.In non-inductional group no conspicuous osteogenic induction was shown.[Conclusion]BMP-2-derived peptide can induce BMSCs to differentiate into osteoblasts.It has the similar capacity of osteogenic induction as nature BMP-2,so BMP-2-derived peptide is an ideal cell agent for bone tissue engineering,and can be available widely.

Objective To investigate the specific immune therapeutic effect of the T cell fusion peptide vaccine from group II allergens from Dermatophagoides pteronyssinus(Der p2). Methods Thirty mice were randomly divided into three groups, namely a negative control group(a PBS group),positive control group(an asthma group)and protein Der p2 T cell fusion epit?ope for specific immunotherapy(SIT)group(a Der p2 T group). The extract of house dust mites(HDM)was used to establish the asthmatic models in BALB/c mice,and the PBS group was always used with PBS buffer. Thirty minutes before spray inhala?tion from 25 to 27 days,the mice of the Der p2 T group were respectively injected subcutaneously with the therapeutic proteins for SIT,then the serum and bronchoalveolar lavage fluid(BALF)were collected. ELISA was used to assay the levels of IFN?γ, IL?4,and IL?13 in BALF,as well as serum levels of specific IgE and IgG2a. The lung tissue sections were stained with haematox?ylin and eosin(H&E)for pathological examinations. Results The ELISA detection revealed that the number of eosinophil in BALF of the asthmatic mice was(5.57 ± 0.64)× 105/ml,which was significantly higher than that in the PBS group[(0.50 ± 0.30)× 105/ml,P < 0.01],the number of eosinophil in the Der p2 T immunotherapy group decreased significantly[(3.45 ± 0.36)×105/ml,P<0.01]. The content of IFN?γin the PBS group,asthma group and Der p2 T group were(267.00 ± 21.98), (155.80 ± 20.53)pg/ml and(234.40 ± 24.46)pg/ml respectively. Compared with the asthma group,the mice with Der p2 T vac?cine specific immune treatment produced a high level of IFN?γ(P<0.01). The content of IL?4 in the PBS group,asthma group and Der p2 T group were(23.40 ± 5.96),(53.28 ± 8.26)pg/ml and(30.00 ± 5.50)pg/ml respectively. Compared with the asth?ma group,the content of IL?4 in the mice of the Der p2 T treatment group was significantly lower(P<0.01). Compared with the asthma group[(308.10 ± 28.32)pg/ml],the content of IL?13 in BALF of the mice in the Der p2 T treatment group was signifi?cantly decreased,which was[(174.50 ± 25.99)pg/ml,P<0.01]. The content of IL?13 in the PBS group was(95.99 ± 31.14) pg/ml. The lung tissue sections showed that the lung inflammation in the p2 T Der group was significantly less than that in the asthma group,and the inflammatory cell infiltration was significantly decreased,and airway epithelial construction remodeled. Conclusion The Der p2 T cell fusion epitope,which is as vaccines for specific immunotherapy with asthma models,can allevi?ate effectively allergic inflammation of airway and lung in the mice,and it may be used as a candidate vaccine for asthma.

Objective To investigate the value of mammotome minimally invasive puncture drainage in the treatment of breast abscess.Methods 53 patients with the breast abscess were divided into minimally invasive group (27 cases)and open group(26 cases)according to the principle of completely random.The patients in the minimally invasive group were treated with mammotome minimally invasive puncture drainage under the ultrasound guidance.The patients in the open group underwent conventional breast abscess incision and drainage.All the patients were treated with systemic anti -infection and symptomatic treatment.Then,we collated and analyzed the statistical data from the operation time,postoperative pain time,pain degree,number of dressing,healing time,postoperative breast feeding and breast appearance aspects.Results There was no significant difference in operation time between the two groups.In the minimally invasive group,the time of pain,the degree of pain,the time of dressing change,the healing time,the proportion of nursing and the appearance of the breast were (2.6 ±0.8)d,(2.1 ±0.2)min,(7.3 ±0.6)times, (1 8.0 ±0.1 )d,81 .5%,(3.5 ±0.2)points respectively.Those in the open group were (5.2 ±0.2)d,(3.3 ± 0.3)min,(28.0 ±0.2)times,(30.0 ±0.8)d,26.9%,(2.1 ±0.2)points respectively.The differences between the two groups were statistically significant(t =-3.38,-5.1 2,-5.61 ,-5.39,χ2 =32.25,t =-6.1 2,all P <0.05). Conclusion Minimally invasive treatment is a good method in the treatment of breast abscess,and deserved to be promoted clinically.

Objective To investigate the clinical application value of ductoscopic flushing in the treatment of early lactation acute mastitis.Methods 52 patients with early acute mammitis were divided into observation group (27 cases)and control group(25 cases)according to the principle of completely random.In the observation group, the patients were checked under the intervention of mammary duct firstly,and then the disease regions of the breast were flushed using ductoscope.In the control group,the patients were treated with artificial breast -milk.The two groups were all treated with the same antibiotics.The curative effect of the two groups was observed,and the statistical analysis was performed.Results In the observation group,the mass extinction time,pain relief time,pyretolysis time, hemogram recovery time,contralateral continued breast -feeding proportion,the proportion of abscess formation,the proportion of back -milk,the proportion of ipsilateral quadrant recurrence were (3.5 ±1.2)h,(5.0 ±0.9)h, (1.0 ±0.1)d,(1.0 ±0.3)d,92.6%,7.4%,7.4%,0.0% respectively,those in the control group were (24.0 ± 3.2)h,(2.0 ±2.1)h,(2.0 ±0.2)d,(3.0 ±0.3)d,88.0%,12.0%,12.0%,8.0% respectively.The differences between the two groups were statistically significant(t =1.72,0.36,0.43,0.72,χ2 =1.83,2.02,1.56,0.34,all P <0.05).Conclusion Ductoscopic flushing has good effect in the treatment of early lactation acute mastitis,and it is worthy of clinical promotion.

Objective To study the diterpenoids possessed immunosuppressive activity from Tripterygium hypoglaucum. Methods The chemical constituents were isolated from the CHCl3 extracts of T. hypoglaucum by repeated column chromatography, including silica gel, Sephadex LH-20, and preparative HPLC. Their structures were elucidated on the basis of spectroscopic studies. The immunosuppressive activity of these compounds was tested using the lymphocyte transformation test. Results Compounds Ⅰ-Ⅵ were identified as triptobenzene H (Ⅰ), triptoquinone A (Ⅱ), triptoquinone B (Ⅲ), triptoquinone H (Ⅳ), triptonediol (Ⅴ), triptonoterpene (Ⅵ). Conclusion Compound Ⅰ-Ⅲ are isolated from this medicinal plant for the first time and all the compounds show the significant immunosuppressive activity.

OBJECTIVE To investigate the transmission of microorganisms by humidifier during oxygen humidification and search an ideal way to prevent it.METHODS Two kinds of humidifier,the unique bionic humidifier and the bubble humidifier,were involved.The humidification material inside the humidifiers were all contaminated with Staphylococcus aureaus,Escherichia coli and Candida albican at 5?105/ml and 2.5?106/ml.Oxygen passed through every contaminated humidifier to the end of oxygen tube which was put in the bottle with 100ml normal saline,lasting 20 minutes,on the 1st,the 2nd,and the 3rd day after the humidifiers being contaminated.The fluid in the bottles,1ml each,were cultured respectively.RESULTS The S.aureaus count of 39.5,52.4,117.3 CFU/ml in 5?105/ml group,83.1,125.2,263.2 CFU/ml in 2.5?106/ml group and E.coli count of 12.9,29.4,37.3 CFU/ml in 5?105/ml group,26.5,55.2,65.2 CFU/ml in 2.5?106/ml group were detected at the end of bubble humidifier on three consecutive day respectively.There were no positive culture of bacteria at the end of bionic humidifier on three consecutive day respectively.The difference of S.aureaus and E.coli count between bubble and bionic humidifier on three consecutive day was significant(P

Objective To evaluate the effects of electroacupuncture (EA) at the Baihui (DU 20) and Dazhui (Bill) points on brain derived neurotrophic factor (BDNF) around the area of cerebral infarction and evaluate the relation between learning and memory ability and BDNF. Methods Forty-eight male adult Wistar rats were divided randomly and equally into EA and control groups. The EA group was sub-divided into 1 week, 2 weeks and 3weeks sub-groups. EA was started 24 h after establishing a model of ischemic brain injury and continued for one, two or three weeks. The control group was reared conventionally and was not given any treatment. Morris' water maze test was used to evaluate the rats' learning and memory ability. The expression of BDNF in the CA3 region of the hippo campus was detected using immunohistochemical techniques. Results Learning and memory in the EA groups were better than in the control group, and spatial probe ability was also significantly better. Positive expression of BDNF was detected in the hippocampal CA3 region of the EA group rats, and it was significantly greater than that in the control group. Conclusion Learning and memory after cerebral infarction can be affected by EA at the Baihui and Dazhui points. The effect might be related with increased BDNF expression in the hippocampal CA3 region.

Objective To explore the efficacy and complication of total hip arthroplasty in the treatment of ankylosing spondylitis hip joint ankylosis,and analyze its prognosis.Methods Eighty-two patients with ankylosing spondylitis hip joint ankylosis were divided into observation group and control group by random digits table method,the 42 patients in observation group were given total hip arthroplasty after the diagnosis of early,the 40 patients in control group were given delayed total hip arthroplasty.In the 2 groups,the recovery of hip joint function were observed,postoperative complication were recorded,and the 5-year survival rate situation were followed up.Results The activity of hip joint,degree of hip joint flexion and Harris score after operation in the 2 groups were significantly better than those before operation,there were statistical differences (P ＜ 0.05),the indexes after operation in observation group were significantly better than those in control group [activity of hip joint:175.25° ± 15.52° vs.122.95° ± 16.26° ; degree of hip joint flexion:85.65° ± 5.33° vs.70.78° ± 4.97° ;Harris score:(86.08 ± 5.41) scores vs.(73.92 ± 6.62)scores],there were statistical differences (P ＜ 0.05).Infection occurred in 1 case,dislocation in 0 case,prosthesis loosening in 2 cases in observation group,the rate of complication was 7.14％(3/42).Infection occurred in 5 cases,dislocation in 2 cases,prosthesis loosening in 4 cases in control group,the rate of complication was 27.50％ (11/40).The rate of complication in observation group was significantly lower than that in control group,there was statistical difference (x2 =8.34,P＜ 0.01).The 1,3-year survival rate in observation group was higher than that in control group,but there was no statistical differences (P ＞ 0.05).The 5-year survival rate in observation group was significantly higher than that in control group [90.48％(38/42) vs.70.00％ (28/40)],there was statistical difference (x2 =7.57,P ＜ 0.01).Conclusion Early total hip arthroplasty has significantly clinical effects in the treatment of patients with ankylosing spondylitis hip joint ankylosis,and its early operation curative effect is better than that of delayed operation.