1.Measurement and clinical significance of cervical lordosis.
Yu-ting ZHANG ; Xiang WANG ; Hong-sheng ZHAN
China Journal of Orthopaedics and Traumatology 2014;27(12):1062-1064
Measurement of cervical lordosis is the basic method for evaluating cervical function, and important reference for determine treatment decision. However, how to choose appropriate measurement in accordance with different situation, as well as the relationship among these methods is not clear. An increasing number of studies suggested that different measurements could directly affect the judgment of cervical lordosis. Therefore, comparative study of cervical vertebrae plays an important role in clinical treatment for cervical spondylosis under different cervical curvature conditions.
Cervical Vertebrae
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anatomy & histology
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Humans
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Lordosis
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diagnosis
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pathology
2.Association betweenADAM10 polymorphism and clinical characteristics in children with asthma
Yan LIU ; Sheng LIU ; Honghui WU ; Xiang ZHANG
Journal of Clinical Pediatrics 2016;34(8):580-583
Objective To investigate the association between single nucleotide polymorphisms (SNP) rs 653765 and rs514049 inADAM10gene and clinical characteristics in asthma in Han Chinese children. MethodsA case-control study was performed in that research, and 221 children with asthma were recruited and an other 236 normal children were recruited as controls. The genotypes of two SNPs in ADAM 10 gene were detected using PCR-RFLP. And all data were analyzed by SPSS 19 . 0 . Results In case-controlled study, we found the frequency of TT genotype in case group was higher than that of controlgroup (P=0 . 028 ), and the frequency of T allele was higher than that of control group (P=0 . 008 ). The genotypes and alleles of rs 514049 was not associated with asthma (P=0 . 604 , 0 . 356 ).There were no difference in serum ADAM 10 levels between asthma and control group (P=0 . 238 ), but in asthma group we found patients with TT genotype may have a higher level ADAM 10 than the one with CC genotype (P=0 . 034 ). The polymorphism of rs 653765 was not associated with the level of C-reaction protein, the number of LYM, IgE and EOS% (P>0 . 05 ). Conclusions The genotype of rs 653765 in ADAM 10 gene was associated with asthma in the central of China, and T allele was a risk factor. The polymorphism of rs 653765 might be associated with the levels of ADAM 10 .
5.Expression and Purification of Receptor Tyrosine Kinase PDGFR?
Jian-Sheng MAO ; Xiang-Shan ZHOU ; Yuan-Xing ZHANG ;
Microbiology 2008;0(10):-
A fusion expression vector pPIC3.5K-PDGFR? was constructed to express recombinant receptor tyrosine kinase PDGFR? and the right Pichia pastoris transformants were screened on his-deficient plates and YPD-G418 plates by turns after electroporation of strain GS115, a high yield strain named M3 was screened. The strain M3 was cultured in a 5 L fermentor and His-GFP-PDGFR? fusion protein was purified by Ni2+ chelating affinity chromatography. One distinct peak was obtained after elution with 250 mmol/L imidazole. Fusion protein was proved to be 90.08 kD by western blotting, and have tyrosine kinase activity by ELISA. Results showed that the receptor tyrosine kinase PDGFR? was successfully expressed in P. pastoris and could be used as a target for small molecule selective inhibitors screening.
6.Helicobacter pylori induces cytokines IL-1βand IL-18 production in human monocytic cell line through activation of NLRP3 inflammasome via ROS signaling pathway
Xiang LI ; Yueping HE ; Sheng LIU ; Jingjing LUO ; Shuo LIU ; Zirou ZHANG ; Wen YAO ; Yan ZHANG
Chinese Journal of Immunology 2015;(3):308-313
Objective:To investigate the effects of Helicobacter pylori on NLRP3 inflammasomes activation in THP-1 ( human monocytic cell line) -derived macrophages and evaluate the role of ROS.Methods:H.pylori strain SS1 was co-cultured with the THP-1-derived macrophages at a multiplicity of infection (MOI) of 1∶100 based on trial results with different MOIs (ratios of THP-1 cells to bacteria ranging from 1∶25 to 1∶200).The co-culture supernatants and THP-1 cells were collected at various time points (3 h,6 h,12 h,24 h) and cytokine production was quantitated using ELISA analysis.The generation of intracellular ROS was detected by FCM,and the mRNA transcript levels of NLRP3 and caspase-1 were measured by Real-time PCR.Western blot was employed to analyze the expression of active caspase-1 subunit ( p10).Then we observed the inhibitory effects of NAC and siRNA specific for NLRP3 on the ex-pression of NLRP3 inflammasome-related components and the secretion of cytokines induced by H.pylori.Results:We found that H.pylori SS1 induced IL-1βand IL-18 production in human acute monocytic leukemia cell line THP-1 in a time-and dose-dependent manner.We further showed that H.pylori could induce the mRNA expressions of NLRP3 and caspase-1 in THP-1 cells.Moreover, release of IL-1βand IL-18 from H.pylori-infected THP-1 cells was suppressed by the ROS scavenger NAC,which was an agent known to inhibit NLRP3 inflammasome formation.NAC administration also resulted in a significant decrease in the level of H.pylori-induced caspase-1 protein expression in THP-1 cells.Additionally,secretion of IL-1βand IL-18 in response to H.pylori infection was remarkably reduced by NLRP3-siRNA.Conclusion:The induction of IL-1βand IL-18 secretion by H.pylori strain SS1 in THP-1 cells could be mediated through activation of NLRP3 inflammasome via ROS signaling pathway, which may be involved in the host innate immune defence and the pathogenesis of the bacteria.
7.Management of moderate to severe pediatric concealed penis in children by Devine's technique via incision between the penis and scrotum.
Xin-Sheng ZHANG ; Shi-Xiong LIU ; Xue-Yan XIANG ; Wen-Gang ZHANG ; Da-Xing TANG
National Journal of Andrology 2014;20(4):338-341
OBJECTIVETo search for a simple and effective surgical approach to the management of moderate to severe pediatric concealed penis in children.
METHODSWe used Devine's technique via incision between the penis and scrotum in the treatment of 68 cases of moderate to severe pediatric concealed penis. The patients were aged 3 -13 (mean 6.5) years, 30 with moderate and 38 with severe pediatric concealed penis.
RESULTSThis strategy achieved good near- and long-term effects and satisfactory appearance of the penis, which was similar to that of circumcision. At 3 months after surgery, the penile length was 3 - 5.2 cm, averaging (2.35 +/- 0.35) cm.
CONCLUSIONDevine's technique via incision between the penis and scrotum is a simple and effective surgical option for moderate to severe pediatric concealed penis in children.
Adolescent ; Child ; Child, Preschool ; Humans ; Male ; Penis ; abnormalities ; surgery ; Scrotum ; surgery ; Urologic Surgical Procedures, Male ; methods
8.Some Teaching Experience by Using the Mode of Learning Followed by Teaching
Sheng-Ping XUE ; Hui-Li LI ; Jin-Liang ZHANG ; Xiang-Mei ZHANG ; Na CUI ;
Microbiology 2008;0(11):-
A new teaching method was developed in the curriculum of Harmful Microorganisms Control Technology.It is characterized by students’ self-learning followed by student’s instruction.Both students and teacher have succeeded in this model after four stages of practice,in which a pleasant learning atmosphere was created in the classroom.An effective interaction between teacher and students was achieved.Students are viewed as main objects in the classroom and they are encouraged to ask questions,to formulate their own ideas,or to find things out for themselves.Thus,students’ abilities including presentation,communication,competition,and cooperation were enhanced.By adapting their role to the new teaching method,teachers have also improved their teaching skill and strategies.
9.Comparison by dynamic enhancement in spiral CT to differentiate peripheral squamous cell carcinoma from adenocarcinoma of the lung.
Xiang-sheng LI ; Wan-shi ZHANG ; Ming-hui XIONG ; Xiang-sheng XIAO
Chinese Journal of Oncology 2006;28(1):70-73
OBJECTIVETo compare the manifestations of peripheral lung squamous cell carcinoma by CT dynamic enhancement with that of adenocarcinoma, and evaluate the difference of CT dynamic enhancement to distinguish peripheral lung squamous cell carcinomas from adenocarcinoma.
METHODSThirty peripheral lung squamous cell carcinomas and 40 adenocarcinomas were examined with dynamic contrasted CT, enhancement at various phases recorded, based on which the time-intensity curves were produced. The enhancement patterns were compared and analyzed.
RESULTSThere was no statistically significant difference in the enhancement degree and peak time between peripheral lung squamous cell carcinoma and adenocarcinoma (P > 0.05). The difference in enhancement pattern between these two different types of carcinoma was not statistically significant when the lesion was larger than 3 cm in diameter (P > 0.05), whereas it became statistically significant when the lesion is less than 3 cm (P < 0.05). Most of the squamous cell carcinoma showed heterogeneous enhancement or peripheral enhancement in the tumor zone, however, most of the adenocarcinomas had homogenous enhancement.
CONCLUSIONThe maximum enhancement and the peak time are not helpful in differentiating peripheral lung squamous cell carcinoma from adenocarcinoma. When the lesion is less than 3 cm in diameter, the enhancement pattern of peripheral squamous cell carcinomas is different from that of adenocarcinoma.
Adenocarcinoma ; diagnostic imaging ; pathology ; Adult ; Aged ; Carcinoma, Squamous Cell ; diagnostic imaging ; pathology ; Female ; Humans ; Lung Neoplasms ; diagnostic imaging ; pathology ; Male ; Middle Aged ; Radiographic Image Enhancement ; Tomography, Spiral Computed ; methods
10.Transrectal shear wave elastography combined with transition zone biopsy for detecting prostate cancer.
Mo ZHANG ; Peng WANG ; Bo YIN ; Xiang FEI ; Xue-wen XU ; Yong-sheng SONG
National Journal of Andrology 2015;21(7):610-614
OBJECTIVETo evaluate the application of shear wave elastography (SWE) combined with transition zone biopsy in the detection of prostate cancer (PCa).
METHODSA total of 489 patients with suspected PCa underwent transrectal ultrasonography (TRUS) and SWE-guided prostatic biopsy. We evaluated the role of SWE combined with transition zone biopsy in promoting the detection rate in comparison with the results of biopsy pathology.
RESULTSThe pathological results confirmed 221 malignant and 268 benign cases. Based on systematic biopsy, SWE combined with transition zone biopsy achieved a detection rate of 45. 19% , significantly higher than that of systematic biopsy alone (33.13%) (P < 0.05). The diagnostic sensitivity, specificity, and accuracy of SWE were significantly better than those of TRUS (P < 0.05). The mean elasticity (Emean) of SWE was remarkably higher for malignant than for benign lesions ([40.1 ± 9.5] vs [21.6 ± 8.3] kPa, P < 0.05). With 28.5 kPa as the threshold of the Emean value, the area under the ROC curve was 0. 899, and the diagnostic sensitivity and specificity were 88.71% and 86.23%, respectively.
CONCLUSIONSWE combined with transition zone biopsy could significantly improve the detection rate of prostate cancer.
Elasticity Imaging Techniques ; methods ; Humans ; Image-Guided Biopsy ; methods ; Male ; Prostate ; pathology ; Prostatic Neoplasms ; diagnosis ; diagnostic imaging ; pathology ; ROC Curve ; Sensitivity and Specificity