1.Effect of valasartan on the plasma level of calcitonin gene-related peptide in patients with essential hypertension
Wei SUN ; Wenying JIN ; Yongzhen ZHANG
Medical Journal of Chinese People's Liberation Army 1982;0(03):-
Objective To explore the effect of valasartan, an angiotensin Ⅱ type 1 (AT 1) receptor antagonist, on the plasma levels of calcitonin gene-related peptide (CGRP) in patients with essential hypertension. Methods 29 outpatients with essential hypertension were treated with valasartan 80mg/day for 6 weeks. 28 age-matched normal blood pressure people were taken as controls. The plasma levels of CGRP were measured in all patients before and after treatment and in controls. Results The plasma levels of CGRP in hypertensive patients were significantly lower than those in controls (minimal value: 0.00 vs 39.95pg/ml; maximal value: 24.07 vs 155.59pg/ml; P
3.Comparative study for effects of repetitive transcranial magnetic stimulation on cognitive function in unipolar depression
Yongzhen ZHANG ; Jian SUN ; Leping XU ; Jijun SUN
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(3):250-252
Objective To investigate the effects of left dorsolateral prefrontal cortex with 10HZ , 80%motor threshold repetitive transcranial magnetic stimulation ( rTMS ) on the cognitive function in unipolar depression. Method Sixty-nine patients with unipolar depression were randomly assigned to either the real rTMS group or the sham rTMS treatment( the control group) ,all patients were given extended releasing venlafaxine. the cognitive function was evaluated using P300 and Repeatable battery for the assessment of neuropsychological status ( RBANS-immediate memory, visuospatial, language, attention, delayed memory, total score), Wisconsin card sorting test ( WCST-Right responses, Completed categories, Total errors , Preservative errors, Nonpreservative errors ). The depression severity was assessed with the 24-item Hamilton Rating Scale for Depression(HAMD-24). All of tests were examined before and after six weeks with thirty times rTMS. Results At the end of six weeks treatments, regarding the WCST,real rTMS group showed better improvement in the right responses than control group(33.23±10.29 vs 27.09 ± 9.82, F= 16. 116 , P= 0. 000), besides right responses, real rTMS group had better performance in the rest items than control group(F=4.862 ~ 17.758, P= 0.031 ~ 0.000) ;concerning the RBANS, real rTMS group was significantly superior to control group in total score( (88.83 ± 16.48 ) vs (78.85 ± 13.51 ), F= 8. 425,P = 0. 005 ), besides total score , the real rTMS group had better performance in some rest factors than control group (F= 10.088 ~20. 801, P=0. 002 ~0.000);real rTMS group showed better improvement in the amplitude of P3than control group( (8.27 ± 2.97 ) μV vs ( 7.37 ± 2.66) μV, F= 5. 838 , P=0.018 ) ;real rTMS group demonstrated better improvement in HAMD-24 than control group( (4.7 ±2.4)vs ( 11.2 ±5.1 ), F= 29.537, P=0. 000).Conclusion rTMS can significantly improve cognitive function and depressive symptoms with unipolar depression.
4.Tissue-engineered skin construction with amniotic epithelial cells and amniotic mesenchymal stem cells
Biao XU ; Fang LI ; Qing SUN ; Yunyun XU ; Juan ZHAO ; Hansi LIANG ; Shuli MA ; Yongzhen CHEN
Chinese Journal of Tissue Engineering Research 2013;(41):7213-7220
BACKGROUND: Placenta mesenchymal stem cells have become hot spots in stem cells study in recent years because of its advantages. OBJECTIVE:To analyze the biological characteristics of amniotic mesenchymal stem cells and amnion epithelial cells, and to explore the feasibility of amniotic mesenchymal stem cells and amnion epithelial cells applied as seed cells in three-dimensional liquid culture to construct the tissue-engineered skin. METHODS:The amniotic mesenchymal stem cells and amnion epithelial cells were obtained by using multi-step digestion with trypsin and col agenase;then the flow cytometry, reverse transcription-PCR and immunofluorescent staining techniques were adopted to identify the surface molecular markers, stem cellcharacteristics and keratinocytes similarity respectively. Based on these data, amniotic mesenchymal stem cells and amnion epithelial cells used as seed cells together with rat type Ⅰ col agen matrix were adopted for three-dimensional liquid culture. RESULTS AND CONCLUSION:Flow cytometry test showed that amniotic mesenchymal stem cells and amnion epithelial cells cultured in vitro could highly express CD90, CD73 and CD105, and could not express the hemopoietic stem cellmarker of CD34 and MHC-class Ⅱ molecular HLA-DR. Reverse transcription-PCR results detected that amniotic mesenchymal stem cells could express stem cellcharacteristic genes CMCY and NANOG;amnion epithelial cells could express stem cellcharacteristic genes CMCY and KLF4, showing that both amniotic mesenchymal stem cells and amnion epithelial cells have stem cellproperties. Reverse transcription-PCR results showed that amniotic mesenchymal stem cells could express keratinocytes characteristic genes K19,β1-integrin and K8;amnion epithelial cells could express K19,β1-integrin, K5 and K8. Immunofluorescence staining results showed amnion epithelial cells could express keratinocytes proliferation related protein K14, which revealed that there was certain similarity in the mRNA expression between keratinocytes and amnion epithelial cells, and indicating that it has the potential to differentiate into keratinocytes. Tissue-engineered skin was successful y constructed by using amniotic mesenchymal stem cells and amnion epithelial cells, hematoxylin-eosin staining section showed that it has certain skin structure, and amnion epithelial cells had a preliminary differentiation. Al these prove that it is feasible to construct human skin tissues with amniotic mesenchymal stem cells and amniotic epithelial cells through the three-dimensional culture.
5.Cloning and bioinformatic analysis of PqERF1 gene in Panax quinquefolius.
Yongzhen SUN ; Yunyun NIU ; Ying LI ; Yingjie ZHU ; Hongmei LUO ; Shilin CHEN
Acta Pharmaceutica Sinica 2011;46(8):1008-14
ERF family transcription factor (TF) represented ethylene-responsive protein which harbored a conserved AP2 domain. After searching the plant transcription factor database, a total of 75 unigenes was found which contained AP2 domain from the transcriptome dataset of Panax quinquefolius L. One unique sequence of ERF transcript, named as PqERF1, was cloned with entire open reading frame of 933 base pairs (bp). Protein prediction result indicated that the gene was localized in nucleus and had a conserved AP2 domain. PqERF1 gene could be induced by methyl jasmonate (MeJA) which was consistent to the inducing profile of triterpene ginsenosides. InterproScan prediction indicated that PqERF1 was probably a pathogenesis-related gene. Sequence alignment and phylogenetic analysis demonstrated PqERF1 was with high identity and had relative close relationship to the NtERF4 (Nicotiana tabacum), PhERF12 (Petunia x hybrida) and DcERF1 (Daucus carota) which was related to plant defense, regulation of secondary metabolism and the flower senescence respectively. Therefore, the gene was likely involved in regulation of secondary metabolism, plant defense and physical processes which would provide gene resource for further study on secondary metabolite synthesis and molecular breeding of P. quinquefolius.
6.Detection of IgG2b Monoclonal Antibodies Against LDH-C4 in Sera of Mice Bearing Hybridoma Backpack Tumors by Quantitative ELISA
Ling SUN ; Shengmin HUAG ; Xiaolei WANG ; Yongzhen ZHANG ; Xiaomei CAO ; Kunlong BEN ; Jinju XU
Journal of Kunming Medical University 2001;22(1):30-33
The levels of IgG2b monoclonal antibodies against LD H-C4 in sera of mice bearing hybridoma backpack tumors secreting anti-LDH-C4-IgG2b were detected by quantitative ELISA. The accuracy between batches is 7.04%~l3.30 %, the intra-assay variation is 3.6l%~l0.20%. Standard curveof monoclonal lgG2b was well correlated (r=0.962 884~0.996 795). The sensitivit y of the assay reach e dup to0.0l?mg/L. The present modified ELISA offers a reproducible, se nsitive, specific method in determination of antigen-specific IgG2b antibody in sera.
7.Strategies of the study on herb genome program
Shilin CHEN ; Yongzhen SUN ; Jiang XU ; Hongmei LUO ; Chao SUN ; Liu HE ; Xianglin CHENG ; Boli ZHANG ; Peigen XIAO
Acta Pharmaceutica Sinica 2010;45(7):807-12
Herb Genome Program (HerbGP) includes a series of projects on whole genome sequencing (WGS) and post-genomics research of medicinal plants with unique secondary metabolism pathways or/and those of great medical and pharmaceutical importance. In this paper, we systematically discussed the strategy of HerbGP, from species selection, whole-genome sequencing, assembly and bioinformatics analysis, to postgenomics research. HerbGP will push study on Chinese traditional medicines into the front field of life science, by selecting a series of plants with unique secondary metabolism pathways as models and introducing "omics" methods into the research of these medicinal plants. HerbGP will provide great opportunities for China to be the leader in the basic research field of traditional Chinese medicine. HerbGP shall also have significant impacts on the R&D of natural medicines and the development of medicinal farming by analysis of secondary metabolic pathways and selection of cultivars with good agricultural traits.
8.Application of human papillomavirus 16/18 E6 protein detection for cervical cancer screening
Yu ZHANG ; Lixin SUN ; Hongwei ZHAO ; Yongzhen ZHANG ; Lixia WANG ; Zhaohui MA ; Yi XU ; Fang SU ; Ruifeng ZHANG
Cancer Research and Clinic 2017;29(3):164-167
Objective To evaluate the diagnostic accuracy and efficacy on cervical precancerous lesions and cervical cancer by HPV 16/18 E6 protein detection. Methods A total of 439 females with sexual activities were selected from Department of Gynaecology in Shanxi Cancer Hospital from May 2014 to January 2015, including 299 cases of cervical intraepithelial neoplasia (CIN)Ⅱ, CINⅢ or cervical cancer (the case group), and the other 140 cases (the control group). All the patients accepted the thinprep cytology test (TCT), HPV DNA and HPV 16/18 E6 oncoprotein tests and colposcope examination. Results The positive rates of the TCT, HPV DNA, HPV 16/18 E6 oncoprotein in the case group were 97.0 % (290/299), 94.3 % (282/299) and 66.9 % (200/299), respectively, and those in the control group were 44.3 % (62/140), 21.4 % (30/140) and 2.9%(4/140), respectively, and there were significant differences between both groups (all P<0.05). The sensitivity and specificity of the HPV 16/18 E6 oncoprotein test in detecting CINⅡ and above were 66.9 %and 97.1 %, respectively, and both of HPV DNA test were 94.3 % and 78.6 %, respectively; The consistent rate between HPV 16/18 E6 and HPV DNA was 71.9 % (κ= 0.21). In the case group, when TCT was associated with HPV DNA test, the sensitivity, specificity and accuracy were 98.9%, 82.8%and 81.7%, respectively, and when TCT was combined with HPV 16/18 E6 oncoprotein test, those were up to 97.9 %, 97.1 % and 95.0 %. Conclusion HPV 16/18 E6 oncoprotein test can improve the specificity of cervical cancer screening, so it may be used as a primary screening method in the less developed areas where HPV DNA test is difficult to be carried out, or as a shunt method for HPV DNA positive patients, which will allocate the limited health resources rationally.
9.Haploidentical hematopoietic stem-cell transplantation for acute myeloid leukemia in first relapse after complete remission by standard induction chemotherapy
Kunyuan GUO ; Zhaoyang SONG ; Bingyi WU ; Yuhua LI ; Lan DENG ; Yi SU ; Jian CHEN ; Wenbin SAO ; Yi SUN ; Sanbin WANG ; Da LI ; Yuanbin WU ; Yongzhen HU ; Quanyi LU
Chinese Journal of Organ Transplantation 2011;32(3):141-143
Objective To investigate the therapeutic effects of haploidentical hematopoietic stem-cell transplantation (Haplo-PBSCT) for acute myeloid leukemia in first relapse after complete remission by standard induction chemotherapy. Methods Eighty-nine cases of AML in first relapse after complete remission by standard DA/Hi-Ara-C regimens induction chemotherapy were evaluated retrospectively. Fiftythree cases were grafted by haplo-PBSCT and 26 cases were treated with iDA/Mid-Ara-C or MA/ Mid- Ara-C agents. Results The second remission rate in haplo-PBSCT group and continuous chemotherapy group was 86. 7 % (46/53 cases) and 38. 1% (9/23 cases) respectively (P<0. 01). Survival postprogression (SPP) at 36th month was 43. 4 % (23/53 cases) in haplo-PBSCT group and 11.5 % (3/26 cases) in continuous chemotherapy group (P < 0. 05). Conclusion Haplo-PBSCT could significantly increase the second remission rate and prolong the survival time of patients with acute myeloid leukernia in first relapse after complete remission by standard induction chemotherapy.
10.Clinical significance of human papillomavirus 16/18 E6 protein detection in shunting and prognosis of patients with atypical squamous cells of undetermined significance and low-grade squamous intraepithelial lesions
Hongwei ZHAO ; Lixin SUN ; Runsheng LIAN ; Lixia WANG ; Yongzhen ZHANG ; Yu ZHANG
Cancer Research and Clinic 2019;31(8):505-509
Objective To evaluate the value of human papillomavirus (HPV) 16/18 E6 protein detection in shunting and prognosis in patients with atypical squamous cells of undetermined significance (ASCUS) and low-grade squamous intraepithelial lesions (LSIL). Methods A total of 98 patients with ASCUS or LSIL from the Affiliated Cancer Hospital of Shanxi Medical University between May 2014 and May 2015 were selected as the subjects. All of them received the thin-cytologic test (TCT), HPV DNA, HPV16/18 E6 protein tests and colposcopy examination. After 3-year follow-up of patients with cervical intraepithelial neoplasia (CIN) grade Ⅰor bellow lesions diagnosed by biopsy and 30 negative controls, the above tests were performed again. The efficacies of all the tests were analyzed. The value of CIN grade Ⅱ or above was predicted. Results The sensitivity, specificity, positive predictive value and negative predictive value in predicting CIN grade Ⅱor above lesions of HPV16/18 E6 protein , HPV DNA and HPV16/18 DNA was 30.8%, 95.3%, 50.0%, 90.0%, respectively; 84.6%, 37.6%, 17.2%, 94.1%, respectively and 61.5%, 67.1%, 22.2%, 91.9%, respectively in shunting study. The relative risk (RR) of CIN grade Ⅱor above lesions in patients with positive HPV16/18 E6 protein, persistent positive HPV16/18 DNA and positive HPV16/18 DNA was 13.429, 10.231 and 8.343, respectively in the follow-up study. Odds ratio (OR) of HPV16/18 E6 positive protein presenting persistent positive HPV16/18 DNA was 34.833 (95% CI 5.020-241.711). Conclusions In patients with ASCUS and LSIL, the specificity and positive predictive value of HPV16/18 E6 protein in predicting CIN grade Ⅱ or above lesions are higher than those of HPV DNA and HPV16/18 DNA. Moreover, these patients with HPV16/18 E6 protein positive have a higher risk of developing CIN grade Ⅱ or above lesions and persistent positive HPV16/18 DNA.