Dermatophagoid.es farinae allergen Ⅰ (Der f Ⅰ ) has been extracted and purified from spent culture medium of Dermatophagoid.es farinae by affinity chromatography coupled with anti-Der f Ⅰ McAb for the first time in China. Furthermore,its physicochemical properties were analysed. By SDS-PAGE,.Der f Ⅰ was estimated to have a molecular weight of 24 kDa and appeared as only one protein band. By isoelectric focusing ,it was revealed to have pIs of 4. 8 - 7. 5 with six protein bands,suggesting that Der f Ⅰ is heterogeneous with complicated composition.

Adolescent ; Adult ; Child ; Endoscopy ; Female ; Humans ; Male ; Maxillary Fractures ; surgery ; Middle Aged ; Nasal Surgical Procedures ; methods ; Young Adult

Acupuncture Therapy ; Female ; Humans ; Middle Aged ; Syringomyelia ; therapy

Objective To evaluate the effects and complications of percutaneous nephrolithotomy (PCNL) in the treatment of renal stone after repeated extracorporeal shockwave lithotripsy (ESWL).Methods Forty-four patients who had a history of repeated ESWL (treatment group) and 50 patients with-out surgical intervention (control group) were submited to PCNL,and clinical data was documented in details and analyzed.Results The time to establish access in treatment group and control group was (11.8 ± 4.1) min and (10.9 ± 2.5) min,respectively,and there was no significant difference (t =1.308,P =0.194).The time to extract stone in both groups was (92.0 ± 13.5) min and (66.6 ± 17.6) min,respectively,and there was significant difference (t =7.776,P =0.000).The operative time in treatment group was (113.9 ± 12.0) min,which was longer than that in control group with (87.6 ± 13.6) min (t =8.354,P =0.000).The clearance in both groups was 81.8％ and 94.0％,and there was no significant difference (x2 =3.361,P =0.067).The was no death or other severe complication in both groups.Conclusions The operation time in treatment group was longer than that in control group,and there was no significant difference in clearance and complication rate.Thus it was safe and effctive to perform PCNL in these patients with a history of failed repeated ESWL.

Child, Preschool ; Histoplasmosis ; complications ; pathology ; Humans ; Lymph Nodes ; pathology ; Male ; Mycobacterium Infections ; etiology

Heart Valve Diseases ; therapy ; Heart Valve Prosthesis Implantation ; methods ; Humans

Humans ; Occupational Health Physicians ; organization & administration ; Personnel Selection

Objective　To investigate the effect of amniotic membrane on the proliferation of YAC-1 in vitro. Methods　The YAC-1 cells were cultured with amniotic membrane and their proliferation were observed by MTT automated colorimetry on the lst day， the 3rd day and the 7th day respectively.Results　Amniotic membrane could significantly enhance the proliferation of YAC-1 on the lst day, the 3rd day and the 7th day respectively after having been seeded (P＜0.01).Conclusion　Amniotic membrane can enhance the proliferation of tumor cells (YAC-1), which should be paid attention to during amniotic membrane transplantation for treating ocular surface lesion caused by epibulbar tumors. ［Rec Adv Ophthalmol 2000;20(5)∶317-318］

Objective To explore the application effects of simulation diagnosis teaching in practical teaching of obstetrics and gynecology.Methods Students were divided into simulation teaching group(n=46) and traditional teaching group(n=46).Survey was conducted among simulation teaching group and traditional teaching group concerning clinical teaching of obstetrics and gynecology.Teaching effects were evaluated by questionnaire and examination.SPSS 13.0 statistics software was used to do the analysis.Enumeration data was analyzed by chi-square test while measurement data by t test.P＜0.05 stands for statistically significant difference.Results There were significant differences in improving students' clinical thinking and practical ability between two groups(P＜0.05).Satisfaction degree of simulation teaching group was significantly higher than that of traditional teaching group.Examination results of simulation teaching group was significantly higher than that of traditional teaching group(theoretical exam:P=0.001; operational exam:P=0.000).Conclusions Simulation diagnosis teaching can provide students more opportunities to practice and improve students' clinical thinking ability and clinical practice ability.

Objective To study the effects of PTEN and missense mutations in PTEN phosphotase domain on AKT phosphorylation in AGS and BGC-823 cells. Methods The plasmids of wtPTEN,PTEN-C124S which PTEN mutant is in both lipid and protein phosphotase domain and PTEN-G129E which PTEN mutant is only in lipid phosphotase domain were respectively transfected into AGS and BGC-823 cells. The cells were stimulated with insulin or rhEGF after serum starvation overnight. The levels of AKT phosphorylation were detected by Western blot. Results Both insulin and rhEGF can activate AKT phosphorylation in gastric cancer cells. Overexpressed PTEN inhibitedAKT phosphorylation induced by insulin or rhEGF(P < 0.05). PTEN mutants C124S or G129E could not inhibitAKT phosphorylation(P > 0.05). Conclusions PTEN can inhibit AKT phosphorylation induced by insulin or rhEGF in gastric cancer cells. Missense mutations in the 124th or 129th amino acid of PTEN phospho-tase domain do not exert inhibitive function.