1.Study of the relationship between carotid atherosclerosis and progressing stroke
Qian-mei CHEN ; CHEN CHEN ; CHEN CHEN
Chinese Journal of Rehabilitation Theory and Practice 2004;10(12):731-732
ObjectiveTo investigate the relationship between carotid atherosclerosis and progressing stroke.Methods103 patients with acute cerebral infarction within the first 24 hours from onset were tested with carotid color doppler ultrasonography during the first week from admission. Univariate and multiple logistic regression analyses were performed to examine the relationship between carotid intima media thickness (IMT), plaque structure, the degree of artery stenosis and the early deterioration of cerebral infarction.ResultsPrevalence of carotid plaque and thickness of IMT in patients with progressing stroke were higher than that in non progressing patients. In logistic regression, presence of carotid plaque was independent predictors of progressing stroke. Plaque size, extent of artery stenosis and IMT were not included in the regression model.ConclusionPlaque structure and its chemical feature may be the cause of progressing stroke.
2.Effect of operation time on the treatment of children with congenital internal strabismus
Fang MEI ; Jing QIAN ; Juan CHEN ; Zhijun CHEN
Journal of Chinese Physician 2016;18(3):355-357,361
Objective To investigate the surgery opportunity choice of congenital esotropia.Methods A retrospective research was taken using the clinical data and the results of the treatment of 146 inpatients with congenital esotropia in our department from Mar 2012 to Mar 2015.The correction rate,lackingcorrection rate,and over-correction rate were compared between early surgery group and late surgery group on time of 1 week after surgery and 6 months after surgery,respectively.Results In all the 146 patients,88 (60.3%) had an esotropia deviation greater than or equal to 40 pupil distance (PD),38 (26.0%) combined with amblyopia,12 (8.2%) combined with nystagmus,30 (20.5%) combined with inferior oblique muscle overaction,6 (4.1%) combined with dissociated vertical divergence (DVD).There was no significant difference between early surgery group and late surgery group on correction rate,lacking-correction rate,and over-correction rate on the time of 1 week after surgery and 6 months after surgery,respectively.Conclusions Congenital strabismus should take surgery at the early-stage,especially for those have large angles.It is better to be operated before 2-year old for a better formation and recovery of binocular visual function.
5.A case report of Kearns-Sayre syndrome.
Wei-hua ZHANG ; Qian TONG ; Dong-mei CHEN
Chinese Journal of Cardiology 2011;39(4):369-369
6.Expression, purification and characterization of a thermostable lactate dehydrogenase from Thermotoga maritima.
Guojun QIAN ; Caiping CHEN ; Ruying ZHAI ; Weilan SHAO ; Yanzhen MEI
Chinese Journal of Biotechnology 2014;30(4):545-553
The gene encoding thermostable lactate dehydrogenase (Tm-LDH) was cloned into the plasmid pHsh from Thermotoga maritima, and expressed in Escherichia coli JM 109. The recombinant protein was purified to homogeneity by a simple step, heat treatment. The recombinant enzyme had a molecular mass of 33 kDa. The optimal temperature and pH of Tm-LDH were observed 95 degrees C and 7.0. The purified enzyme had a half-life of 2 h at 90 degrees C, and exhibited better stability over a pH range from 5.5 to 8.0. The K(m) and V(max) values were 1.7 mmol/L, 3.8 x 10(4) U/mg of protein for pyruvate, and 7.2 mmol/L and 1.1 x 10(5) U/mg for NADH, respectively. The expression of Tm-LDH in T7 system could not obtain high efficiency, but it has been soluble over-expression in pHsh system and reached 340 mg/L. The superior stability and productivity of Tm-LDH will lay the foundation of its industrial-scale fermentation and application in the NAD regeneration.
Cloning, Molecular
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Enzyme Stability
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Escherichia coli
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metabolism
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L-Lactate Dehydrogenase
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biosynthesis
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Molecular Weight
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Recombinant Proteins
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biosynthesis
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Temperature
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Thermotoga maritima
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enzymology
7.Expression of BAFF and its specific receptor BAFF-R in patients with B-cell non-Hodgkin′s lympho-ma and their significance
Jiang PU ; Shaopeng CHU ; Mei WANG ; Chen QIAN ; Xianjuan SHEN
Chinese Journal of Microbiology and Immunology 2015;(11):821-826
Objective To investigate the expression of B-cell activating factor ( BAFF ) and its specific receptor BAFF-R in patients with B-cell non-Hodgkin′s lymphoma ( B-NHL) and to analyze the cor-relations between BAFF and the development of B-NHL.Methods RTQ-PCR and Western blot assay were used to measure the expression of BAFF and its specific receptor BAFF-R in patients with B-NHL.Fluores-cence immunocytochemical staining was used to determine the localization of BAFF and BAFF-R in Raji cells, a B-NHL cell line.The expression of BAFF in tumor tissues from patients with B-NHL of different his-tologic subtypes was measured by immunohistochemistry.WST proliferation and TUNEL assays were used to evaluate the effects of BAFF and BAFF-R on the proliferation, survival rate and apoptosis of Raji cells.Lin-ear correlations between the concentrations of lactate dehydrogenase ( LDH) and the expression of BAFF and BAFF at mRNA and protein levels in patients with B-NHL were analyzed.Results BAFF and its specific receptor BAFF-R were expressed in Raji cells and played an important role in the survival and proliferation of B-NHL cell line.The expression of BAFF in tumor cells from patients with B-NHL varied with the different histologic subtypes of B-NHL.Patients with small B-cell malignant lymphoma, large B-cell lymphoma ( LBCL) , mucosa-associated lymphoid tissue lymphoma ( MALT lymphoma) and follicular lymphoma showed higher levels of BAFF, while those with mantle cell lymphoma showed lower levels of BAFF.Compared with the healthy subjects, patients with B-NHL showed significantly increased expression of BAFF at mRNA and protein levels.The levels of LDH were closely related to the expression of BAFF at mRNA and protein lev-els.Conclusion BAFF and its specific receptor BAFF-R might play an important role in the growth and survival of malignant B cells.
8.Reports of life experience in chronic obstructive pulmonary disease patients with exercise rehabilita-tion for over five years
Yi CHEN ; Mei′e NIU ; Hongying QIAN ; Xiuqin ZHANG ;
Chinese Journal of Practical Nursing 2016;32(10):754-757
Objective To explore life experience in chronic obstructive pulmonary disease (COPD) patients with the habit of exercise for more than 5 years,to enhance the confidence of participating in the rehabilitation in other patients, to help the medical staff pay more attention to guide the patients with COPD to take up the rehabilitation exercise. Methods The narrative research method in qualitative research was used to analyze the collected data. Results The study found that the coping approach of the contradiction between exercise and dyspnea, the ability to live together with the disease peacefully and the enthusiasm of persuing life were deserved to be learned. Conclusions Full of perseverance and persisted rehabilitation exercise may alleviate the symptoms, reduce the number of acute exacerbation of COPD and improve the quality of life for COPD patients. Medical staff should encourage COPD patients to participate in the rehabilitation in the right time with appropriate methods.
9.Effects of uremia patients sera on bone marrow derived CFU-E proliferation
Jin-Wei LIU ; Qian-Mei SUN ; Wen-Ming CHEN ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(12):-
Objective To investigate the existence of the erythropoiesis inhibitors(?).Methods Twelve patients suffered from uremia with anemia were studied[5 males,and 7 females,(50?12)years].Methylcellulose culture technique was used to culture mice bone marrow cells.The sera from the uremia patients were added to CFU- E and BFU-E culture medium with final concentrations of 1,25%,2.5% and 5%,Mice bone marrow cells were ob- tained from the female Balb/c mice.In vitro CFU-E and BFU-E culture in the presence of sera from uremia patients was compared with that in the presence of normal human subjects with the use of normal mice bone marrows.Re- suits The effects of the sera from uremia patients on CFU-E and BFU-E colon growth were in a dose-dependent manner.The effect was correlated with the concentrations of the sera(P
10.Clinical observation of low molecular weight heparin combined with astragalus injection in the treatment of diabetic nephropathy
Zheng LI ; Hua MENG ; Mei CHEN ; Qian ZHANG ; Qin HUANG
Chinese Journal of Primary Medicine and Pharmacy 2016;23(8):1165-1167
Objective To observe the effect of low molecular weight heparin calcium combined with astraga-lus injection in the treatment of diabetic nephropathy.Methods From January 2013 to December 2014,78 patients with stage III diabetic nephropathy in our hospital were enrolled into the study.They were randomly divided into con-trol group(41 cases) and treatment group(37 cases).The control group received general therapy,such as low protein diets,compound alpha keto acid,insulin,irbesartan,simvastatin.The treatment group was treated with low molecular weight heparin calcium and astragalus injection on the basis of general therapy.The changes of urinary albumin and 24 hours urinary protein after treatment in the two groups were observed.Results After treatment,the negative rate of urinary micro albumin in the treatment group ( 75.68%) was significantly higher than that of the control group (29.27%)(χ2 =16.765,P<0.01).24 hour urinary protein of the treatment group[(176.2 ±82.3)mg/24h]was significantly lower than that of the control group[(223.8 ±87.8)mg/24h](t=2.471,P<0.05).Conclusion Low molecular weight heparin calcium combined with astragalus injection can reduce the proteinuria of diabetic nephropa-thy,it is an effective intervention therapy for early diabetic nephropathy.