1.Research progress in relationship between phospholipase A2 and tumorigenesis
Chinese Journal of Clinical Oncology 2014;(15):1007-1010
Phospholipase A2 (PLA2) has been a recent concern given the high incidence of tumors. Increasing amounts of re-search report that PLA2 is an inflammatory factor that is closely associated with tumor incidence. Moreover, it displays high specificity, minimal biological variation, is rarely affected by other inflammation markers, and has a definite relation with the differentiation in tu-mors of the digestive tract, such as intestinal and gastric cancers. PLA2 is also related to the invasion mechanisms, metastasis, and apop-tosis of tumors. In addition, PLA2 can be applied to the scoring and to the clinical and medicinal treatment of the Gleason tumor, which is found in prostatic cancers of the genital system. It is also closely related to the proliferation and infiltration of ovarian cancer cells. Therefore, PLA2 can be used as a new test index for the clinical diagnosis and treatment of tumors, which may generate a new research direction with respect to the forecasting of tumor incidence and progression. The bionomics of PLA2 facilitate the use of inflammatory factors in the detection procedures utilized by clinical laboratories, which can monitor the conditions of cancer patients in advance and effectively customize treatment regimens for such patients.
2.Value of echocardiography in the diagnosis of anomalous origin of left coronary artery from the pulmonary artery
Jin YU ; Xuehui PENG ; Jingjing YE ; Jin HE ; Guoping JIANG
Chinese Journal of Ultrasonography 2014;23(5):383-386
Objective To explore the value of echocardiography in the diagnosis of anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) in children.Methods The echocardiographic images of 14 patients with ALCAPA confirmed by operation and 18 patients with endocardial fibroelastosis (EFE) diagnosed by clinical were compared and analyzed.Results Both ALCAPA and EFE exhibited obvious dilated left ventricle,decreased left ventricular systolic function,thick endocardium and mitral regurgitation of different degree.The former additionally showed dilated right coronary artery(RCA) with normal origin,left coronary artery(LCA) emerging from the root or wall of the pulmonary artery(PA),the retrograde flow into PA in LCA and abundant collateral vessels in myocardium.However the later exhibited normal diameter of LCA and RCA and no collateral vessels.Conclusions Color Doppler echocardiography not only demonstrates left ventricular systolic function,endocardium,mitrial regurgitation and collateral vessels in myocardium,but also shows the origination and courses of LCA clearly,which provide exact informations to diagnose ALCAPA.The echocardiography can be used as a powerful tool of ALCAPA diagnosis and preoperative assessment.
3.Clinical research on the influence of moxibustion on body sub-health fatigue degree
Haimin YE ; Peng ZHANG ; Xuehui SHI ; Wen YAO
International Journal of Traditional Chinese Medicine 2013;35(10):883-885
Objective To observe the clinical effect of moxibustion on body sub-health fatigue state.Methods 120 cases of body sub-health patients were randomly divided into A,B,C three groups,with 40 cases in each group.Group A was treated with moxibustion,group B was treated with acupuncture therapy,and group C (control group) did not receive any measure of treatments.Fatigue scale (FS) was adopted to the three groups respectively for measuring physical fatigue score,mental fatigue score and total fatigue score before and after the treatment.Treatment efficacy was evaluated and analyzed after three weeks of continuous treatment.Results The total score of fatigue scale was 6.10 ± 2.47、6.82± 2.36、and 10.10±2.66 respectively in group A,group B and group C.Compared with group C,the difference in group A and group B was statistically significant (P<0.01).Compared with group B,the difference in group A was not statistically significant (P>0.05) ; The Physical fatigue points of group A,B,C was 2.46± 2.06、3.60 ± 2.24 and 5.03 ± 2.66 respectively.Compared with C group,the difference in group A and group B was statistically significant (P<0.01).Compared with group B,the difference in group A was statistically significant (P<0.05).Conclusions Moxibustion and acupuncture can effectively improve patients total body sub-health state of fatigue.Moxibustion treatment showed better effects in alleviating physical fatigue,
4.Analysis of universities' roles in national major basic scientific research projects
Peng YANG ; Xuehui SUN ; Hao WANG ; Guifang SUN
Chinese Journal of Medical Science Research Management 2015;28(1):52-55
Since the beginning of 973 plans and major scientific research programs,the ministry of science and technology has organized the implementation of a number of major projects under the principle guidance of top-level design,co-ordinate arrangements,advantage integration and dynamic adjustment.Prominent advance of technology and expansion of innovation capacity has become possible with the success of those major projects.As a dominant force of basic science research,universities took part in the designing and implementing of most of 973 major scientific research programs.In this paper,participating universities,such as Peking University,Tsinghua University,Fudan University,Zhejiang University,Shanghai Jiaotong University,University of Science and Technology of China,Nanjing University,were analyzed in their roles played in those projects,and the questions of how universities should make the adjustment to their planning and management to meet the requirements of future national research programs were discussed.
5.Diagnosis of the downward displacement of the posterior leaflet of tricuspid valve from apical right heart two chamber view by echocardiography
Guoping JIANG ; Jingjing YE ; Jin HE ; Xuehui PENG ; Lei ZHAO ; Yu HE ; Xiuzhen YANG
Chinese Journal of Ultrasonography 2009;18(4):305-307
Objective To evaluate the value of echocardiography method for diagnosis of the downward displacement of the posterior leaflet of tricuspid valve with apical right heart two chamber view (AP-RH-2CV). Methods Rotating the probe clockwise from apical four chamber view(AP-4CV) to AP-RH-2CV at the septial and posterior leaflet of tricuspid valve, the shape, moving and position of the posterior leaflet of the tricuspid valve were observed by displaying the degree of downward displacement of the septial and posterior leaflet of tricuspid valve. The location of the orifice of tricuspid regurgitation was examined by color Doppler flow imaging(CDFI). Results In 15 patients with Ebstein's anomaly from the AP-RH-2CV, the downward displacement of posterior leaflet of tricuspid valve was clearly observed at the AP-RH-2CV. These results of echocardiography were confirmed by surgery except one ease missing out mild downward displacement of the anterior leaflet of tricuspid valve. Moreover, all 15 patients showed the obvious downward displacement of the location of the orifice of tricuspid regurgitation from AP-RH-2CV by CDFI. Conclusions The AP-RH-2CV is an ideal view in diagnosis of the downward displacement of the posterior leaflet of tricuspid valve by echocardiography. The downward displacement of the location of the orifice of tricuspid regurgitation is a critical character for diagnosis of the downward displacement of the posterior leaflet of tricuspid valve by CDFI.
6.A novel genomic island SSGI4 in Streptococcus suis serotype 2
Lingwei ZHU ; Xuehui CAI ; Jun LIU ; Chong QI ; Yang SUN ; Yuan TIAN ; Xue JI ; Peng LI ; Shuzhang FENG
Chinese Journal of Zoonoses 2009;(7):615-618
A novel genomic island (GI) in Streptococcus suis serotype 2(SS2) was identified, which resided in the highly virulent strains but not in the hypo-virulent strains or avirulent strains of SS2 of the Chinese isolates. This newly discovered GI strain was designated as SSGI4 and its whole length of genome was 11 269 bps, sharing the typical properties of pathogenicity islands, such as the distinct G+C content, a mosaic architecture characteristics and the specificity for virulent isolates. There were 11 genes within SSGI4, in which some genes were putative cell surface protein genes and others were amino acid-binding protein genes. Our finding sheds light on the investigation of horizontal gene transfer in SS2 and their influence on pathogenicity.
7.Effect of adipose-derived stem cell conditioned medium on UVB damage of human dermal fibroblasts in different senescent degrees
Ting WANG ; Shu GUO ; Peng CHEN ; Zheng CAO ; Shuangyi ZHANG ; Xuehui LIU
Chinese Journal of Medical Aesthetics and Cosmetology 2018;24(2):79-83
Objective To study the differences of UVB damage among yong,intermediate and aged human dermal fibroblasts (HDFs),the recovery effect of adipose-derived stem cell conditioned medium (ADSC-CM) on UVB damage and the relationship between the recovery effect and ADSC-CM concentration as well as its treating period.Methods HDFs were cultured at different senescent degrees in vitro to establish UVB damage model of HDFs,and then the HDFs were cultured in different concentration ADSC-CM and cellular proliferation was detected.Results The optimal treating period and concentration of ADSC-CM were 48h and 100% respectively.As to HDFs in different senescent degrees,ADSC-CM was able to accelerate cellular proliferation in both UVB group and control group.Conclusions Independently or simultaneously,the intrinsic and extrinsic factors can cause ageing damages on HDFs.To some extent,ADSC-CM has recovery effect on the damages through secretomes from ADSC.
8.Development of human embryonic stem cell platforms for human health-safety evaluation
Guangyan YU ; Tong CAO ; Xiaohui ZOU ; Xuehui ZHANG ; Xin FU ; Shuangqing PENG ; Xuliang DENG ; Shenglin LI ; He LIU ; Ran XIAO ; Hongwei OUYANG ; Hui PENG ; Xiao CHEN ; Zengming ZHAO ; Xiaoying WANG ; Haiqin FANG ; Lu LU ; Yulan REN ; Mingming XU
Journal of Peking University(Health Sciences) 2016;48(1):1-4
SUMMARY Thehumanembryonicstemcells(hESCs)serveasaself-renewable,genetically-healthy, pluripotent and single source of all body cells,tissues and organs.Therefore,it is considered as the good standard for all human stem cells by US,Europe and international authorities.In this study,the standard and healthy human mesenchymal progenitors,ligament tissues,cardiomyocytes,keratinocytes,primary neurons,fibroblasts,and salivary serous cells were differentiated from hESCs.The human cellular health-safety of NaF,retinoic acid,5-fluorouracil,dexamethasone,penicillin G,adriamycin,lead ace-tate PbAc,bisphenol A-biglycidyl methacrylate (Bis-GMA)were evaluated selectively on the standar-dized platforms of hESCs,hESCs-derived cardiomyocytes,keratinocytes,primary neurons,and fibro-blasts.The evaluations were compared with those on the currently most adopted cellular platforms.Parti-cularly,the sensitivity difference of PM2.5 toxicity on standardized and healthy hESCs derived fibroblasts, currently adopted immortalized human bronchial epithelial cells Beas-2B and human umbilical vein endo-thelial cells (HUVECs)were evaluated.The results showed that the standardized hESCs cellular plat-forms provided more sensitivity and accuracy for human cellular health-safety evaluation.
9.Development of LysargiNase, a mirror trypsin and its application in proteomics.
Junling ZHANG ; Xuehui PENG ; Fuqiang WANG ; Ping XU
Chinese Journal of Biotechnology 2019;35(5):741-748
Proteomics is a fast-growing discipline that aims at systematic identification, quantification of proteins and their post-translational modifications in cells. Mass spectrometry-based shotgun proteomics technology is currently one of the mainstream methods for proteomics research. With this method, proteins need to be digested to peptides by site-specific proteases before they can be detected with mass spectrometry. Therefore, site-specific proteases played key roles in this process and so far, a variety of specific proteases have been developed and used in proteomics study. Particularly, the identification, characterization and development of proteases that cleave at the N-termini of corresponding amino acid residues, which are just mirrors to those of typical C-termini proteases, provide novel tools for proteomics analysis. In this review, we summarized the proprieties of LysargiNase, a most recently identified mirror trypsin, and its applications in proteomics research to promote its more widespread usage.
Mass Spectrometry
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Metalloproteases
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chemistry
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metabolism
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Protein Processing, Post-Translational
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Proteomics
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Trypsin
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chemistry