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.

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

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

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.

Laboratory diagnostics is an important discipline functioning as a bridge between basic and clinical medicine and it is closely associated with the diagnosis of clinical physician.But there are some problems in the laboratory diagnostic teaching including unreasonable curriculum standard,simple teaching method and unpractical theory.This paper explored and summarized the problems and the reform of laboratory diagnostics teaching mode for students of clinical medicine.

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］

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

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

Objective To investigate the expression of aquaporin 2 (AQP2) in an endolymphatic hydrops ani-mal model .Methods Forty adult guinea pigs were randomly divided into experiment group and control group (20 animals in each group ) . Guinea pigs in the experiment group were treated with deamino arginine vasopressin (DDAVP) intraperitoneally at the dosage of 4 μg · kg -1 · d-1 for 7 days ,while those in the control group were treated with physiological saline .The endolymphatic hydrops and expression of AQP2 in cochleas of all animals were evaluated by Hematoxylin and Eosin stain ,immunohistochemistry and Western blot .Results The endolymphatic hydrops in the experiment group were more severe than that in the control group(P<0 .05) .Expression of AQP2 were found in the stria vascularis and spiral ganglions in both groups with similar patterns .Both immunohistochem-istry and Western blot showed that the expressions of AQP2 in the experiment group were significantly stronger(P<0 .05 ) .Conclusion DDAVP can up-regulate the expression of AQP2 in the cochleae of guinea pigs ,thus may be closely related to the pathogenesis of endolymphatic hydrops .

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