1.Association of serum 25-hydroxyvitamin D3 and urine albumin-to-creatinine ratio in type 2 diabetic patients
Chinese Journal of Endocrinology and Metabolism 2012;28(4):298-300
To study the association of serum 25-hydroxyvitamin D3 level with urine albumin-to-ereatinine ratio in 193 type 2 diabetic patients.Multivariate linear regression demonstrated that serum 25-hydroxyvitamin D3 level was an independent risk factor in predicting urine albumin excretion level in type 2 diabetic patients(β =-0.02,95%CI -0.04 - -0.01,P<0.01 ).
2.Toxicological assessment of Shanze weight-reducing food
Yan YU ; Ling ZHOU ; Anjing LI
Journal of Xi'an Jiaotong University(Medical Sciences) 1981;0(02):-
Objective To evaluate the toxicological safety of Shanze weight-reducing food in order to provide some toxicological data for its application. Methods According to the national standard of safety evaluation, the following experiments of acute toxicity test through mouth in rats, the genetic toxicity test, thirty days feeding test and teratogenicity test in mice were performed. Results LD 50 was more than 20.0 g?kg -1, equivalent to 467 times of the recommended dosage, in acute toxicity test through mouth in both male and female rats, which fell into the scale of non-toxicity. Under the dosage range of 1.05 g?kg -1 to 4.20 g?kg -1, equivalent to 100 times of the recommended, the negative results were observed in the genetic toxicity test of micronucleus test of bone marrow cells, sperm shape abnormality test in mice and the Ames test. The negative impacts on the growth, development, hematology, biochemistry, histology and the ratio of organ to whole body were not found on the experimental rats of thirty days feeding. Under the same dosage range, no teratogenic effects were found in the experiments of teratogenicity test. Conclusions Shanze can be used as a kind of health weight-reducing food with toxicological safety under the experimental dosage range of 1.05 g?kg -1 to 4.20 g?kg -1.
4.Effects of Probucol on Expression of Bcl-2,Bax and Oxidative Stress in Myocardial Infarcted Rats
Shu-Xian ZHOU ; Yu-Ling ZHANG ; Yan ZHOU ; Juan LEI ;
Chinese Journal of Hypertension 2006;0(10):-
Background Cardiomyocytes apoptosis was related to oxidative stress which has been shown to play an important role in ventricular remodeling after myocardial infarction(MI).Probucol is a hypolipidemic and antioxidant agents.Several reports demonstrated its cardioprotective effect after MI.However,the exact effect of probucol on the modification of the apoptosis related gene Bcl-2 and Bax is not clear.Objective To investigate the effects of probucol on mRNA and protein expression of Bcl-2,Bax and oxidative stress in myocardial infarcted rats.Methods Forty-one SD rats that survived 24 h after ligating left anterior descending coronary artery were randomly to receive placebo-saline(5 mL/d,n=20)or probucol(probucol 60 mg/kg?d,n=21).Twelve rats underwent sham operation were served as control(n=12).Six weeks after treatment,hemodynamic pararmeters and left ventricular function were measured with catheterization.Cardiomyocytes apoptosis were determined by TUNEL method.Myocardium mRNA of Bcl-2 and Bax expression levels in the non-infarcted myocardium were as- sessed by RT-PCR.The myocardium protein expression of Bcl-2 and Bax in the non-infarcted myocardium were de- termined by Western blot.Colorimetry was used to determine oxidative metabolism index in myocardium.Results 1)Compared with the sham rats,all MI rats showed marked decrease in Bcl-2 mRNA and protein expression in myo- cardium with increase of Bax mRNA and protein expression and apoptosis index(P
5.Construction of mouse PPAR? adenovirus vector and its expression in INS-1 cells
Youzhao JIANG ; Ling ZHANG ; Yan ZHOU ; Bing CHEN
Journal of Third Military Medical University 1984;0(01):-
Objective To construct the recombinant adenovirus vector containing mouse PPAR?,and infect the INS-1 cells.Methods The pCDNA3.0-mPPAR? plasmid was digested with KpnⅠ and EcoRⅤ to obtain full-length coding sequence of mPPAR?,then the mPPAR? cDNA was ligated to the pAdtrack-CMV vector.The plasmid of pAdTrack-mPPAR? was linearized with PmeⅠ,and the fragment was reclaimed and transformed into BJ5183 which contains pAdeasy.After being screened,the extracted plasmid of positive bacteria linearized with PacⅠ was transfected into HEK293 cells with lipofectamine~(TM) 2000 and was identified by the green fluorescence protein(GFP).The harvested virus was amplified in HEK293 cells and infected INS-1 cells.After infection,the expression of PPAR? was proved by GFP expression and Western blotting.Results The recombinant adenovirus vector containing mouse PPAR? was constructed successfully and the titer was 1.5?10~(10) pfu/ml.The PPAR? expression in INS-1 cells infected by the virus was much higher than the controls.Conclusion The constructed recombinant adenovirus vector containing mouse PPAR? provides a potent tool to investigate its biological function in pancreatic islets and other tissues.
6.Dexamethasone improves expression of basic fibroblast growth factor in neurons of spinal cord following sciatic nerve injury in rats
Yan ZHOU ; Xiangmin YU ; Ling LI ; Xiaoliang PAN
Journal of Medical Postgraduates 2003;0(07):-
Objective: The regeneration and repair of peripheral nerves are focuses of neurological studies.The(bFGF) may play an important role in the development of the neural system.Dexamethasone is usually employed in the management of neural injuries.The aim of this study is to establish a rat model,and investigate the effect of Dexamethasone on the expression of bFGF in the neurons of the spinal cord following sciatic nerve injury.Methods: Fifty-six male Wistar rats were randomly divided into 4 groups: a nerve injury group,with sciatic nerve injury induced by clamping the nerve in the right;a dexamethasone group,immediately injected with dexamethasone [0.5 mg/(kg/d)] in the injury side;a saline group,given saline only;and a control group,rats without sciatic nerve injury.Changes of bFGF in the motor neurons of the L4-L6 spinal cords were observed by immunohistochemistry.Results: Dexamethasone obviously upregulated the expression of bFGF in the motor neurons of the spinal cord.Conclusion: Dexamethasone can improve the expression of bFGF in the motor neurons of the spinal cord after sciatic nerve injury,and contribute to the recovery of the function of the injured neurons.
7.Evaluation of glycogen assay,polymerase chain reaction,and cell culture for diagnostic value of chlamydia trachomatis infection
Ling YAN ; Dan LI ; Shuyi FENG ; Jinsong ZHOU ; Shuangyuan WANG
Chinese Journal of Clinical Laboratory Science 2001;19(1):13-14
Objective To study on glycogen assay,polymerae chain reaction,and cell culture for diagnostic value of chlamydia infection of vervical smeat.Methods 106 specimens were examined by using glycogen assay,PCR and cell culture.Results Compared with cell culture,the sensitivity and specifity of glycogen assay are 80.0% and 95.8% ,and the sensitivity and specifity of PCR are 90.0% and 97.9% ,respectively.Conclusion The glycogen assay possesses diagnostic value for chlamydia trachomatis infection of vervical smear.
8.Expression of complement receptor type 1 on erythrocytes and its correlation with immunoglobulin E,complement C3 and C4 expressions in patients with chronic urticaria
Ying LUO ; Hongbo YAN ; Ling ZHOU ; Li YANG ; Gang XIA
Chinese Journal of Dermatology 2012;(12):855-858
Objective To investigate the role of erythrocyte complement receptor type 1 (CR1) in the pathogenesis of chronic urticaria.Methods Venous blood samples were collected from 59 patients with chronic urticaria (including 14 cases of dermatographism and 45 chronic idiopathic urticaria) and 29 healthy human controls.Flow cytometry was carried out to quantify the expression level of CR1,and double-antibody sandwich enzyme-linked immunosorbent assay to determine the serum level of immunoglobulin E (IgE),complement C3,C4 and 50% complement hemolytic activity (CH50).Differences in these parameters were analyzed by one-way ANOVA and independent samples t-test,and correlation between these paramenters by Pearson correlation analysis.Results The expression level (expressed as mean fluorescence intensity per 10 000 erythrocytes) of CR1 was significantly higher in patients with dermatographism and chronic idiopathic urticaria than in the healthy controls (35.06 ± 2.06 and 29.17 ± 1.53 vs.20.46 ± 2.57,t =4.20 and 3.33,both P < 0.05),while no statistical difference was observed between the patients with dermatographism and chronic idiopathic urticaria (P > 0.05).Increased total serum IgE levels were observed in patients with dermatographism and chronic idiopathic urticaria compared with the healthy controls ((769.89 ± 123.0) μg/L and (340.09 ± 29.74) μg/L vs.(107.63 ± 88.79) μg/L,t =5.58,5.85,both P < 0.05),and in patients with dermatographism compared with those with chronic idiopathic urticaria (t =3.49,P < 0.05).For patients with chronic urticaria,there was a statistical difference in the expression level of CR1 between individuals (n=22) with total serum IgE levels ranging from 0 to 240 μg/L and those (n =17) higher than 500 μg/L (24.45 ± 10.83 vs.33.09 ± 11.86,t =3.33,P< 0.05).The total serum IgE levels were positively correlated with the level of CR1 (r =0.27,P < 0.05),but uncorrelated with that of complement C3 (r =0.16,P > 0.05) or C4 (r =-0.08,P> 0.05).The level of complement C3 was positively correlated with that of C4 (r =0.54,P < 0.01).One-way ANOVA revealed no significant difference in the serum levels of complement C3,C4,or CH50 between the patients with dermatographism,patients with chronic idiopathic urticaria and healthy controls (all P > 0.05).Conclusion CR1 is abnormally expressed in patients with chronic urticaria.
9.Observation of Differential Protein of Hypothalamus in the Hyperthyroidlsm Rats with Hyperactivity of Liver-Yang
Ling-Yan ZHOU ; Ze-Qi CHEN ; Wei LI ;
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(05):-
Objective Utilization of proteome method,by observing differences on protein expression of hypothalamus in the hyperthyroidism rats with hyperactivity of liver-yang and normal rats,to search the differential protein.Methods Models of animal were prepared by ip L-T4 and Fuzi Decoction.Both the quantitative and qualitative changes of the protein expression were compared between model group and treated group by protein technique.Results Proteins were mainly displayed at range of pI 3~8,Mr(14.4~75)kD.18 protein increased and 24 protein decreased in model group compared with treated group, included Thioredoxin,Ubiquitin carboxyl-terminal hydrolase isozyme L1,Platelet-activating factor acetylhydrolase IB gamma subunit,glutamate dehydrogenase,dihydropyrimidinase-related protein 2, NSFL1 cofactor p47,Tubulin beta 5.Conc(?)sion There were 18 spots high expressed and 24 spots low expressed in the hyperthyroidism with hyperactivity of liver-yang,that maybe related with the develepment of the hyperthyroidism with hyperactivity of liver-yang.
10.Risk factors for radioiodine-refractoriness and survival analysis of differentiated thyroid cancer with distant metastasis
Yan XIE ; Ling JIANG ; Kehua ZHOU ; Fangxian JIA
Chinese Journal of Endocrinology and Metabolism 2017;33(5):387-391
Objective To analyze clinical risk factors for radioiodine(RAI)-refractoriness of DTC with distant metastasis and do survival analysis.Method The clinical data of 77 differentiated thyroid cancer(DTC) patients with distant metastasis admitted to the department of radionuclide therapeutics of Qilu Hospital from Jan 2002 to Sep 2015 were collected to make the retrospective analysis by dividing into radioiodine-refractory(RAI-R) group and radioiodine-efficient(RAI-E) group.Result (1)In DTC patients treated by 131I, there are 77(7.15%) patients with distant metastasis.Among DTC with distant metastasis, 25(32.47%) patients are identified as RAI-R DTC with average age of (56.2±16.0) years old, median age of 57 years old, and male-to female ratio of 1∶2.57.(2)Univariate analysis shows that age of distant metastasis older than 45 years and pathological type of follicular thyroid cancer(FTC) are two risk factors related to RAI-refractoriness.Logistic regression analysis indicates that age of distant metastasis older than 45 years and pathological type of FTC are the independent risk factors for RAI-refractoriness of DTC with distant metastasis.(3)3-year and 5-year survival rates of the 25 RAI-R DTC patients with distant metastasis are 75% and 62%,while RAI-E DTC patients were all alive.The survival of RAI-R DTC with distant metastasis is significantly worse than RAI-E DTC with distant metastasis.Conclusions (1)In the DTC with distant metastasis, the rate of RAI-R DTC is not low, and it is 32.47%.Females of RAI-R DTC are more than males.(2)Age of distant metastasis older than 45 years and pathological type of FTC are independent risk factors for RAI-refractoriness of DTC with distant metastasis.(3)The survival rate of RAI-R DTC with distant metastasis was significantly lower than that of RAI-E DTC with distant metastasis.