2.A correlation analysis on the pulse wave velocity, ankle-brachial index and carotid atherosclerosis in type-2 diabetes
Clinical Medicine of China 2012;28(2):185-188
Objective To investigate the correlation of arterial compliance and carotid atherosclerosis in patients with type-2 diabetes.Methods Eighty cases of type-2 diabetic patients and 80 control subjects were recruited into the study.Brachial-ankle pulse wave velocity(BaPWV)and ankle-brachial index(ABI)were measured with atherosclerosis diagnostic devices VP-1000.The inner-membrane and medium-membrane thickness(IMT)of the common carotid artery and plaque were detected with color Doppler ultrasound.The difference of the pulse wave velocity in the subjects with carotid plaques were compared between the two groups.The correlations of carotid IMT with BaPWV and ABI were also analyzed.Results In the diabetic patients group,BaPWV([1752 ± 213]cm/s)was higher than that of normal control group([1279 ± 159]cm/s)(P < 0.01);ABI in diabetic patients group(0.95 ± 0.13)was lower than that of control group(1.28 ± 0.17),(P < 0.01).In the diabetic patients group,the incidences of carotid IMT thickening(45.0%)and plaques(35.0%)were both higher than that of control group(27.5% and 10.8%,respectively)(P < 0.05).In the diabetic patients group,the cases with carotid plaques had a higher BaPWV([1810 ± 296]cm/s)than those without([1480 ± 304]cm/s)(P < 0.01).BaPWV was positively correlated with carotid IMT(r =0.271,P < 0.05).ABI and IMT was negatively correlated(r =-0.406,P < 0.05).Conclusion BaPWV and carotid IMT was positively correlated,while ABI and IMT was negatively correlated.BaPWV and ABI are indicators which are practicable and effective to evaluate the stiffness of peripheral arteries in patients with diabetes.
3.Clinical value of brachial-ankle pulse wave velocity and ROCK activity in diagnosis of cardiovascular disease
Chaofu ZHANG ; Xunliu ZENG ; Xuepeng LIU
Chongqing Medicine 2014;(25):3287-3289,3292
Objective To determine the relationship between brachial-ankle pulse wave velocity(baPWV)and Rho associated coiled coil protein kinase(ROCK)activity with the cardiovascular disease(CVD).Methods 168 patients with CVD were divided in-to the CVD group(123 cases)and the non-CVD group(45 cases)based on the results of coronary angiography.The baPWV value and the ROCK activity were detected.The CVD group were subdivided into the single vessel,double vessels and multiple vessels le-sions groups.Results The baPWV value and ROCK activity in the CVD group were significantly higher than those in the non-CVD group(P<0.05).The more the lesion vessels,the higher the baPWV value(P<0.05).Conclusion The baPWV and ROCK activi-ty are associated with CVD.Therefore,the combined measurement of baPWV and ROCK levels could be used to assess CVD and its risk degree.
4.Exploratory Development of 3DSS Three-dimensional Scanning System on Unilateral Orbital Defect Restoration
Xuepeng TANG ; Lijun QIU ; Chunyan ZHANG
Chinese Medical Equipment Journal 1989;0(03):-
Objective To discuss the accuracy of 3DSS three-dimensional scanning system, which was used to reconstruct the 3D digital model of unilateral orbital defect patients. Methods By using 3DSS spectrometer on the case of patients with unilateral orbital defect, the related scan dates of facial structure were collected, and the reconstructed digital models were processed wax pattern by SLS prototyping machine. Results The digital solid model of three-dimensional reconstruction was smooth and complete, and border over the natural. The designed resin prosthesis can be inosculated with the orbital defect tightly and symmetrically. Conclusion To adopt the system can be successfully completed unilateral orbital defect restoration design and production, and ultimately satisfied the clinical requirement of prosthesis production.
5.Expression and its clinical significance of adisintegrin and metalloprotease-17 in human glioma
Yan ZHANG ; Suqin ZHENG ; Xuepeng ZHANG ; Jinlu LI ; Jing SONG
Clinical Medicine of China 2013;29(11):1121-1123
Objective To investigate the expression and its clinical significance of adisintegrin and metalloprotease-17 (ADAM17) in human glioma.Methods The expressions of ADAM17 in human glioma were detected by immunohistochemical staining.The correlation between ADAM17 expression and the malignance of glioma was analyzed.Results Expression of ADAM17 in human gliomas increased.With the malignant degree,ADAM17 expression has also further increased.However,there was a less ADAM17 expression in normal human brain.The positive expression of ADAM17 in low malignant group was 75% (18/24),of which 1 case were strong positive.The strong positive expression of ADAM17 was the majority (82.1%,23/28) in malignant group.Conclusion The expression of ADAM-17 was higher in human brain gliomas.With malignance degree increased,of the ADAM-17 expression has gradually increased,suggesting that ADAM-17 might play a certain role in the occurrence and development of glioma.
6.Bioactivity and stability study of the antifungal substance produced by Streptomyces NG-715
Min YUAN ; Hua BIAN ; Jing LI ; Xuepeng ZHANG ; Lin CHENG
Chinese Journal of Biochemical Pharmaceutics 2014;(2):37-39
Objective To explore the bioactivity and stability of the antifungal substance produced by Streptomyces NG-715 as well as to establish the assay for biological activity detection. Method Take the antifungal substance as experimental materials, and test its minimum inhibitory concentration and minimum bactericidal concentration on four fungi strains including Saccharomyces cerevisiae, Penicillium citrinum, Aspergillus niger, Rhizopus sp. Aspergillus niger was used as indicator strain to measure the biological activity and stability of the antifungal substance. Results The results showed that the MIC of the antifungal substance on four fungi strains including Saccharomyces cerevisiae,Penicillium citrinum,Aspergillus niger,Rhizopus sp were 1.25, 2.5, 3.75 and 3.75μg/mL, respectively. The MBC of the antifungal substance on four fungi strains were 2.5, 10, 17.5 and 17.5μg/mL, respectively. Linearity regress equation of the antifungal substance in Aspergillus niger was y=26.963 x-27.6,R 2=0.9991. The antifungal substance was pH-stable, heat-stable but ultravio1 et-sensible. Conclusion The results from this study will porvide useful information for the further extraction and analysis on the bioactive compound.
7.Diagnostic value of coarse needle biopsy in retroperitoneal solid mass guided by color ultrasound
Feng YAN ; Xuepeng ZHANG ; Wenjing YANG ; Yanqin LU ; Xingfei YANG
Clinical Medicine of China 2009;25(10):1098-1099
Objective To evaluate the clinical value of color ultrasound guided coarse needle bioptic histo-pathology in the diagnosis of retroperitoneal solid mass. Methods 32 cases with retroperitoneal solid mass accepted coarse needle biopsy (CNB) guided by color ultrasound, and followed to surgical mass resection. The histopathologi-cal result of CNB was compared to the post-operative pathological diagnosis. Results CNB were successful in all ca-ses and no complications occurred. Compared with the pest-operative pathology,the accuracy of CNB was 93.75% (30/32). There was no false-negative and very low rate of false-positive (3.13% ,1/32) of CNB in diagnosing ma-lignant tumor. Conclusions CNB guided by color ultrasound is a safe and an effective method in diagnosis of retro-peritoneal solid mass.
8.Effect of ADAM17-shRNA on proliferation of human breast cancer cell line MCF-7 in hypoxia
Guofu CHEN ; Lijun WU ; Xuepeng ZHANG ; Zhun CAI ; Xiangchao MENG
Chongqing Medicine 2017;46(1):29-32
Objective To investigate the effects of shRNA targeting a disintegrin and metalloproteinases 17(ADAM17)on the proliferation of human breast cancer MCF-7 cells in hypoxia environment.Methods The four specific ADAM17-shRNA se-quences aiming at ADAM17 were designed,transfected into MCF-7 cells by electroporation,and cultured in hypoxia environment. The experiment was divided into the control group (blank phosphate buffer solution,PBS),nonsense sequence group (transfected with ADAM17-shNC)and shRNA transfection group (transfected with ADAM17-shRNA,the highest silencing efficiency of shR-NA was selected for following experiments).Real-time PCR was used to detect the expression of ADAM17 mRNA.The prolifera-tion ability and cell cycle change of MCF-7 cells were detected by iCELLigence and flow cytometry (FCM),respectively.Results Compared with control group and nonsense sequence group,the four ADAM17-shRNA transfection groups all had the silence effect on ADAM17 gene expression (P <0.05 ),the difference was statistically significant(P <0.05 ),particularly shRNA1219 had the highest inhibitory rate (F =5.11,P <0.01 ).The cellular proliferation ability and cell growth speed in the shRNA transfection group were significantly decreased compared with the control group and nonsense sequence group (P <0.05).Most cells of shRNA transfection group remained in the G0/G1 phase (73.35 ± 2.45 ),which in the control group and nonsense sequence group was (62.56±2.35)and (62.68 ±1.20)respectively,the difference was statistically significant(P <0.05).The cell cycle progression was significantly delayed.Conclusion ADAM17-shRNA inhibits the proliferation of MCF-7 cells under hypoxic environment.
9.Expression of dead box 1 gene in neuroblastoma
Jianhua LI ; Yufeng LIU ; Jinghang ZHANG ; Jiaqin WANG ; Xuepeng GUO
Chinese Journal of Applied Clinical Pediatrics 2016;31(6):445-447
Objective To detect the expression of dead box 1(DDX1)gene in tumor tissue and pericarcino-matous tissue of clinical neuroblastoma(NB)samples,and explore the relationship between DDX1 and NB. Methods Five cases of pathological specimens in children with NB were chosen from Department of Pathology,the First Affi-liated Hospital of Xinxiang Medical University between January 2012 and December 2014. In the 5 cases,3 cases were male,2 cases were female,the age of 1 - 5 years old,average age(2. 1 ± 1. 6)years. The NB tissue and pericarcino-matous tissue(pericarcinomatous tissue was normal tissue which was at least 2 cm from the tumor tissue)of 5 children were collected and fixed in 40 g/ L formaldehyde solution. Then with the conventional dehydration,embedding,sectio-ning, dewaxing, hydration, antigen repair, add primary antibodies, secondary antibodies, diaminobenzine chromogenic. The expressions of DDX1 in tumor tissue and pericarcinomatous were observed with light microscopy and with semi - quantitative analysis.(1)Staining degree:no staining with 0 score;light staining with 1 score;medium staining with 2 scores;deeply staining with 3 scores.(2)Positive cells proportion:positive cells proportion ﹤ 10% with 0 score;positive cells proportion within 10% - 30% with 1 score;positive cells proportion within 31% - 60% with 2 scores;positive cells proportion ﹥ 61% with 3 scores. Final scores were a half of the sum of staining degree score and positive cells proportion score,final score within 0 -1. 0 with - ,1. 1 -2. 0 with + ,2. 1 - 3. 0 with + + ,3. 1 -5. 0 with + + + . Results DDX1 were expressed in NB and pericarcinomatous tissues,but visible DDX1 positive staining number more and deeper in NB,DDX1 positive staining number less and light in pericarcinomatous tissues. Five cases of pericarcinomatous tissues immunohistochemical semi - quantitative score were negative and final scores were 1. 0 score or less,the mean value was 0. 5 score. NB immunohistochemical semi - quantitative score were+or + +and final scores were 1. 5 score or higher,the mean value was 1. 8 scores,the expressions of DDX1 were sig-nificantly higher in NB than the pericarcinomatous tissues. Conclusions DDX1 is highly expressed in NB,which may contribute to the development of NB. This suggest DDX1 may serve as an oncogene and play a catalytic role in the de-velopment of NB,which provides a clinical evidence for the follow - up study.
10.Down-regulation of FTO in human gastric cancer and its effect on cell line MGC-803 function
Jingnan PI ; Jie ZHANG ; Xuepeng WANG ; Jiachao XIONG ; Jia YU
Basic & Clinical Medicine 2017;37(7):907-911
Objective To investigate the expression of FTO in gastric cancer tissues and the functional significance of FTO in MGC-803 cell line.Methods The FTO mRNA was detected by RT-qPCR in 54 cases of gastric cancer samples and their paired adjacent normal control tissues.The effect of FTO overexpression in MGC-803 on cell proliferation,cell migration and invasion were detected by CCK-8,wound heal and ranswell assays,respectively.Results The expression of FTO mRNA was significantly lower than that of adjacent tissues(P<O.05).Furthermore,overexpression of FTO in MGC-803 cells inhibited cell proliferation,cell migration and invasion.Conclusions FTO is low expressed in gastric cancer tissues and inhibits gastric cancer cell line MGC-803 proliferation,migration and invasion.FTO is closely associated with the development of gastric cancer.