1.Changes of the expression of HLA-DR in rheumatoid arthritis
Shaogang ZHANG ; Jieruo GU ; Buyun YU
Chinese Journal of Rheumatology 2001;0(05):-
0 05) after treatment.At the same time,the clinical symptoms were improved significantly.Conclusion ① Testing expression level of HLA DR is helpful to diagnose and monitor the state of RA.② The change of expression level of HLA DR conforms to that of rheumatic factor.③ Examination of the change of expression level of HLA DR can help to judge the state and prognosis of RA.
2.Volar T-shape plate fixation for unstable distal radius fractures in the elderly patient
Guoqing GU ; Ren YU ; Yufa ZHANG
Orthopedic Journal of China 2006;0(12):-
[Objective]To evaluate outcome of the treatment of unstable distal radius fractures in the elderly patient using a volar T-shape plate.[Method]From January 2001 to April 2003,42 cases with unstable distal radius fractures older than 60 years(range 60~75 years;mean age 65.1 years) were treated with a T-shape plate fixation.The fractures were classified according to the AO classification of distal radius fracture: 4 A2,7 A3,5 B1,3 B3,9 C l,11 C2,3 C3.Artificial bone graft substitutes were used in 28 cases with severe cortex destruction and insufficient buttress.[Result]All patients were followed up(mean 18.2months,range 12~24months).Final volar tilt was averaged 3.66? and radial tilt 20.1?,and radial shortening averaged 1.59 mm in 6 cases.Step-off or gap of the articular surface was found in 6 cases(mean
3.Research progress on the application of nanoparticles in the early detection of cancer by electrochemical method
Fangfang PENG ; Yu ZHANG ; Ning GU
International Journal of Biomedical Engineering 2008;31(4):193-196
The nanoparticle-based electrochemical technology for early detection of cancer is an imjportant research topic in the area of biomedicine.This article introduces the concept of tumor marker and principle of electrochemical detection of the tumor marker.The applications of nanoparticles in electrochemical early detection of cancer are reviewed in detail.Finally,the prospected application of research is discussed.
4.Dual-Gradient Liquid Chromatography-Tandem Charged Aerosol Detector for Detection of Macromolecules in Traditional Chinese Medicine Injections
Tingting ZHANG ; Yu WANG ; Danhua GU ; Li ZHANG ; Yan JIN
Chinese Journal of Analytical Chemistry 2014;(12):1871-1872
A size exclusion chromatography method ( SEC) was established for the screening of macromolecules in traditional Chinese medicine (TCM) injections. In the experiment, TCM was collected through 0. 45μm hybrid filter and separated by SEC with MAbPac SEC-1 column. Acetonitrile was added by post-column mode with a flow rate of 0. 2 mL/min to enhance the detection sensitivity, and 25 mmol/L ammonium formate was used as the mobile phase at flow rate of 0. 2 mL/min. The charged aerosol detection was carried out with Dextran and Tween as the reference standards. The molecular weight distribution of Dextran ranged from 2500 to 133800 had a good linear relationship with the retention time. No macromolecules were detected out in the selected traditional Chinese medicine injections except Kuhuang injections.
5.Benign infantile convulsions with mild gastroenteritis:clinical and prognosis analysis of 248 cases
Yuanda ZHANG ; Fang GU ; Huiqing XIE ; Qian HUANG ; Yu ZHANG
International Journal of Pediatrics 2014;(5):554-556
Objective To explore the clinical characteristics and the prognosis of benin convulsions as-sociated with mild gastroenteritis( BICE) in children. Methods To study clinical features of 248 children with BCIE,they followed up for 12 months,and their prognosis were observe. Results Age between 3 months and 3 years,twice or more seizures were occurred on 124 patients. 64 patients suffered the seizures more than 30 mi-nutes. Cranial CT/MRI showed no abnormality. Laboratory examinations were normal, including plasma glu-cose,serum electrolytes and cerebrospinal fluid. Followed up for 12 months,14 patients (5. 6%) suffered from recurrence of BICE,12 patients (4. 8%) suffered from simple febrile seizures,and 8 patients (3. 2%) devel-oped epilepsy. Conclusion The prognosis is good in majority of cases,but some cases may transform febrile seizure or epilepsy. It is more likely to transform epilepsy,when the children suffer from febrile seizure.
7.Evaluation of MALDI Biotyper and VITEK MS for identifying clinical isolated Streptococcus spp.
Danxia GU ; Tao YU ; Xiaofei ZHANG ; Rong ZHANG
Chinese Journal of Laboratory Medicine 2015;38(2):98-101
Objective Using 16S rRNA gene sequencing as the gold standard method,to compare the performance of two matrix-assisted laser desorption ionization time of flight mass spectrometry system (MALDI Biotyper and VITEK MS) for identifying clinical isolates of Streptococcus spp.Methods One hundred and sixty two clinical Streptococcus isolates were collected at the Second Affiliated Hospital of Zhejiang University,from April to June,2014,and confirmed by 16S rRNA gene sequencing analysis.MALDI Biotyper and VITEK MS mass spectrometry system were used for identification and further evaluated by performance respectively.Results Of all the isolates tested,155 (155/162,95.68%) Streptococcus isolates were accurately identified to species level by MALDI Biotyper.Besides,MALDI Biotyper identified three Streptococcus mitis group as S.pneumoniae and one S.parasanguinis as S.australis.Another three S.pneumonia isolates were not identified accurately (values < 1.7).Although 156 (156/162,96.30%) isolates were accurately identified to species level (including subspecies) by VITEK MS system,two S.pneumoniae as S.mitis/S.oralis and one S.euinus as S.infantarius ssp.infantarius were misidentified.The two systems showed a 100% (51/51) accuracy in identifying all S.pyogenes and S.agalactiae isolates,and an accuracy higher than 85% for S.pneumoniae.Conclusions Both systems showed potent identification ability for Streptococcus spp.,VITEK MS system showed more clinical significance in accurately identifying some subspecies.Mass spectrometry system can be used as a rapid identification method for Streptococcs spp.in clinical practice.
9.Fuzhengzhiqiu Granules' effect on ICAM-1 and VCAM-1 expression in nasal mucosa of experimental allergic rhinitis
Chaoping ZANG ; Hongmeng YU ; Yurong GU ; Chunquan ZHENG ; Chonghua ZHANG
Chinese Traditional Patent Medicine 1992;0(05):-
Objective: To investigate Fuzhengzhiqiu Granules' effect on ICAM-1(Intercellular adhesion molecule-1) and VCAM-1(Vascular cell adhesion molecule-1) expression in nasal mucosa of experimental allergic rhinitis. Methods: SD rats (n=64) were immunized by intraperitoneal injection of 200?g Ovalbumin (OVA) (1ml OVA-Al[OH] 3-saline suspension) on 1st, 2ed and eleven day. Normal control group rats A (n=16) were treated with the same methods except injecting OVA. 19th day, 0.1 ml of saline containing 10 mg of OVA was instilled into nasal cavity for 7 consecutive days. Normal control group followed by intranasal administration only with saline. The rats challenged into allergic rhinitis (n=64) were randomly divided into four groups: allergic rhinitis model group B (n=16); Fu zhengzhiqiu Granules treated group C (n=16); Fu zhengzhiqiu Granules treated group D (n=16, three times dosage used in group C); Xinqin Granules treated group E (n=16). All animals were treated for 15 days. The nasal mucosa of them were studied by immunohistochemical staining to observe the ICAM-1 and VCAM-1 expression. Results: Animal model of allergic rhinitis was established by using ovalbumin intraperitoneal immunization and nasal challenge. The number of positive immunoreactive cells (ICAM-1 and VCAM-1) was increased significantly in all the groups compared with normal controls. VCAM-1 expression was inhibited by giving with Fuzhengzhiqiu Granules (especially in group D) and Xinqin Granules (P0.05). Conclusion: Fuzhengzhiqiu Granules can decrease the expression of VCAM-1 in nasal mucosa of experimental allergic rhinitis, but no effect on ICAM-1.
10.Prokaryotic expression of human ubiquitous mitochondrial creatine kinase, preparation of its antiserum and clinical application
Jian ZHANG ; Aihua WANG ; Pengfei GU ; Jiaping YU
Academic Journal of Second Military Medical University 1999;0(12):-
Objective:To clone the full-length cDNA of human ubiquitious mitochondrial creatine kinase(uMtCK) and express its protien in E. coli. The protein was used to immunize rabbit to prepare anti-uMTCR polyclonal antibody which was then used to detect the expression of uMtck in gastrointestinal carcinoma. Methods: A 1 062 bp segement was amplified from human HaLa cell by RT-PCR,which was then inserted into pMD18-T plasmid and proved to be the coding sequence of uMtCK by endonuclease digestion and sequencing. The coding sequence of uMtCK was inserted into pQE30 plasmid and recombinant plasmid pQE30-uMtCK was transformed into E. coli. The expressed protein was purified with a His. Bind column and was analyzed with SDS-PAGE and Westen blot and the activity of uMtCK was tested. An antiserum against uMtCK was perpetrated by immunizing rabbit with purified uMtCK. The expression of uMtCK in 59 patients with gastric and colonic cancer was detected by immunohistochemistry. Results:The coding sequence of uMtCK was successfully obtained by RT-PCR and the product was successfully inserted into pQE30 to construct a recombinant vector pQE30-uMtCK. The expression of uMtCK was effective and soluble, A good specific antiserum against uMtCK was proved by Western blot. The expression of uMtCK of gastric and colonic cancer was 76. 5%. Conclusion:The coding sequence of uMtCK is coined and expressed in E.coli. uMtCK is a prospective marker for the diagnosis of gastric and colonic cancer.