1.Preparation and Application of Molecular Imprinting Polymer Based Zero Current Potential Sensor for Benzidine
Mingming MA ; Chenglong LIU ; Xinke SU ; Fengqiu AN ; Wei ZHANG
Chinese Journal of Analytical Chemistry 2015;(7):1021-1026
The effects of polymerization conditions including scan potential range, scan cycles, the concentration ratio of template molecules to functional monomer, pH of the buffer, and washing time for removing the template molecule from the imprinted polymer on the difference of zero current potential of benzidine ( BZ) interaction with BZ-MIP were investigated. The optimum preparations were obtained. The imprinted capacity of benzidine, 4-chloroaniline, and 4-aminobiphenyl and carmine was calculated as 0. 632, 0. 1123, 0. 1123, 0. 0847 and 0. 0725, respectively. This indicated that BZ-MIP had good specific recognition and selectivity to benzidine, and other substances did not interfere with the binding of BZ-MIP with BZ. The zero current potential variation was linear with the lorgarithm of BZ concentration in the range of 4í10-8-1í10-5 mol/Lwith detection limitation of 1. 89í10-8 mol/L. The sensor was used to detect BZ in waste water sample with recoveries of 95 . 7%-104 . 2%.
2.Metabonomics study of urine samples of patients with hyperlipidemic pancreatitis
Yan ZHAO ; Jianbing WU ; Li PAN ; Xiaolei ZHANG ; Yunping QIU ; Mingming SU ; Wei JIA ; Xingpeng WANG
Chinese Journal of Pancreatology 2009;9(2):85-88
Objective Metabonomics method based gas chromatography-mass spectrometry (GC/MS)were used to analyze the urine samples of patients with hyperlipidemic pancreatitis (HLP) to describe the characteristics of metabolism changes of HLP,identify potential biomarkers,and investigate the role of metabonomics study in the management of AP.Methods 24 patients of HLP and 40 age,sex matched volunteers were enrolled and their urine samples were collected.The urine samples underwent preparation,derivation and GC/MS analysis,Orthogonal-Projection to Latent Structures-Discriminant Analysis (OPLS-DA)were performed to detect the metabolic profile difference between the HLP and control group.Results HLP patients can be precisely distinguished from healthy controls.21 metabolites (credibility > 700 ) were identified using the reference compounds available in the libraries of NIST and Wiley.It was identified that levels of nicotinic acid,aconitie acid,citric acid,hippurie acid,hydroxyphenylacetic acid,hydroxyphenylpropionicacid were decreased,while the levels of tryptophan,tyrosine,tyramine,16-hexadecanoic acid,18octadecanoie acid were increased.It was also suggested that there was change in tricarboxylic acid cycle and gut bacterial flora,as well as fat metabolism and metabolism of amino acid.Conclusions There are differences between healthy controls and HLP patients in the term of GC/MS metabolic profiling,and the biomarkers in the metabolites could be found through metabonomics analysis,and the mechanisms of the metabolic changes could be explored.It was noted that the research of metabolites in the urine samples may be a useful tool to help diagnose and understand the pathogenesis of HLP.Metabonomics analysis is a promising research method.
3.Impact of basic diseases on the clinical symptoms and prognosis of cryptococcosis
Yuan DING ; Mingming TAN ; Di XIA ; Qian HE ; Yi SHI ; Xin SU
Journal of Medical Postgraduates 2015;(7):719-722
Objective Cryptococcosis is a potential life-threatening systemic mycosis with a heterogeneous susceptible popu-lation which is classified into three groups according to the current guidelines, including AIDS patients, organ transplantation recipients ( OTR) , and non-HIV-infected and non-transplant hosts ( NHNT) .This study aimed to discuss the influence of basic diseases on the clinical features and prognosis of NHNT cryptococcosis patients. Methods Using a retrospective cohort study design, we retrieved the clinical data about 73 NHNT cryptococcosis patients treated in Jinling Hospital.Based on the presence or absence of immunodefi-ciency or infection-increasing complications, we divided the patients into a basic disease group ( n=35) and a non-basic disease group ( n=38) and analyzed their clinical characteristics, chest radiographic features, laboratory results, and clinical outcomes. Results Compared with the non-basic disease group, the basic disease group showed a significantly higher incidence rate of disseminated disea-ses (62.9%vs 21.1%, P<0.01), more cases of patchy consolidation (47.4%vs 16.7%, P<0.05) and mixed lesion (31.6%vs 3.3%, P<0.05) in chest radiography, and a higher mortality (30.0%vs 5.3%, P=0.016). Conclusion Basic diseases have a great impact on the clinical features and prognosis of NHNT cryptococcosis.NHNT patients with basic diseases are susceptible to dis-seminated diseases with severer clinical symptoms and a higher mortality.
4.Construction and identification of a recombinant adenoviral vector expressing murine dendritic cell-associ-atedC-type lectin-1
Di XIA ; Qian QIAN ; Zhicheng LIU ; Mingming TAN ; Yuan DING ; Xin SU ; Wenkui SUN ; Yi SHI
Journal of Medical Postgraduates 2015;(4):341-345
Objective Dendritic cell-associatedC-type lectin-1 ( Dectin-1) is one of the most important receptors in antifungal innate immune response.This study was to construct a recombinant adenovirus vector expressing themurine Dectin-1gene and acquire a high-concentration adenovirus by amplification and purification. Methods The PCR amplification product CLEC7A-pIRES2-EGFP was cloned into the intermediate vector pDONR221, and then recom-bined with the backbone vector pAD/CMV/V5-DEST to produce a re-combinant plasmid pAD-CLEC7A-pIRE2S -EGFP.The recombinant plasmid was linearized with Pac I and transfected into human embryon-ic kidney ( HEK293) cells to produce recombinant adenovirus pAD-CLEC7Ap-IRES 2-EGFP. The adenovirus was propagated in the HEK293 cells and purified by filtering through the cellulose acetate membrane and concentrating column.Fluorescence microscopy and re-al-time PCR were used to determine the expression of the Dectin-1 gene. Results PCR identification, enzyme digestion, and sequen-cing results manifested theDectin-1 gene in the vector, with the final adenovirus titer of 5×1011 IU/mL.Fluorescence microscopy revealed green fluorescence and real-time PCR assay confirmed that the expression of Dectin-1 was improved by 8677.25 times. Conclusion A relatively high-titer adenovirus expressing Dectin-1 was acquired,which may help to further study the high expression of Dectin-1 in anti-fungal innate immunity in vitro and in vivo.
5.Study on two-dimensional and three-dimensional ultrasonic diagnoses of nontraumatic esophageal hiatal hernia in middle-aged and elderly people
Zigan, WANG ; Chunmei, XU ; Jianchang, ZHU ; Feng, ZHOU ; Nan, ZHANG ; Peng, CHEN ; Zhou, LUO ; Mingming, DU ; Xiaxia, SU
Chinese Journal of Medical Ultrasound (Electronic Edition) 2014;(4):48-53
Objective To discuss the clinical values of two-dimensional and three-dimensional diagnoses of nontraumatic esophageal hiatal hernia (HH) in middle-aged and elderly people. Methods Thirty-two cases underwent two-dimensional and three-dimensional ultrasonic examination with fasting and water iflling methods in half-sitting, standing, supine and supine right anterior oblique positions. The ifndings were compared with X-ray barium meal examination, endoscopy and operation. Results There were 27 cases sliding HH, 3 cases paraesophageal HH and 2 cases short HH. Traditional two-dimensional manifestations were as follows:widening of hiatal diaphragmatic muscles (1.6±0.4 cm) and echoes of gastric mucosa in superior hernial sac and inside hernial sac. Real-time three-dimensional surface image formations were as follows: along the long axis of diaphragmatic hiatus, superior phrenic sac was showed as mushroom-shaped or pond-shaped and the neck of hernial sac was showed as irregular tunnel-shaped or ditch-shaped;looking upward from the fundus of stomach, superior phrenic hiatus was showed as caved-shaped or louver-shaped;looking downward from mediastinal surface of lung, uperior phrenic hiatus was showed as piercer-shaped. Conclusions Two-dimensional abdominal ultrasound can diagnose nontraumatic HH in middle-aged and elderly people conveniently and accurately. Real-time three-dimensional abdominal ultrasound can display the range, size, and shape clearly. Compared with the former, the latter can provide more information for diagnosis and help ultrsound doctors and clinical doctors to understand and master the anatomical and morphopathological features of this disease.
6.Effect of tetrahydropalmatine on expression of Cav1. 2 in dorsal root ganglion neurons in mice with sciatic nerve chronic constriction injury
Haibo JIANG ; Jun WANG ; Jianhua SU ; Mingming FANG ; Nan YANG ; Jiawei YANG ; Fen WAN ; Hang XIAO ; Jinrong TANG
Chinese Pharmacological Bulletin 2015;(11):1598-1602,1603
Aim To investigate the analgesic effect of tetrahydropalmatine on Cav1 . 2 expression in the dorsal root ganglion ( DRG) of mice with sciatic nerve chronic constriction injury ( CCI ) -induced neuropathic pain. Methods Forty male C57 BL/6 mice were randomly divided into 5 groups ( n =5 ): sham group ( group S) , CCI group ( group C ) and L-THP group ( group L) . Steady mice models of neuropathic pain were es-tablished by inducing CCI of sciatic nerve. According to development of neuropathic pain in mice, L group was divided into induction period, induction with ma-intenance period and long-term low-dose group. The mice were intraperitoneally administered with 45 mg · kg-1 tetrahydropalmatine in induction ( day 0~5 ) , in-duction with maintenance ( day 0~5 , 14~19 ) period of neuropathic pain state. From the instant after opera-tion, 15 mg · kg-1 tetrahydropalmatine was injected into the long-term low-dose group once per day for 19 days. Then, the behavior changes of mice were moni-tored. Moreover, the threshold of mechanical and ther-mal stimuli was tested. In addition, the expression of Cav1 . 2 protein was detected by Western blot and im-munohistochemical staining. Results The lowest ex-pression of Cav1 . 2 was observed in group C and the highest expression level of Cav1 . 2 was found in group S. Cav1. 2 expression was significantly up-regulated in induction period group, induction with maintenance period group and long-term low-dose group ( P<0. 05 , P<0. 01). Compared with group C, high dose of tet-rahydropalmatine in induction period group, induction with maintenance period group and long-term low-dose group showed reduced mechanical allodynia and ther-mal hyperalgesia induced by nerve injury ( P <0. 05 , P<0. 01). Meanwhile, high dose of tetrahydropalma-tine significantly relieved the mechanical allodynia in induction period group, induction with maintenance period group and thermal hyperalgesia in maintenance period group (P<0. 05). However, there was no ob-vious effect on mechanical allodynia and thermal hyper-algesia induced by nerve injury ( P >0. 05 ) in long-term low-dose group. Conclusions High dose of tet-rahydropalmatine in induction period group, induction with maintenance period group and low-dose among the whole experiment process obviously relieves the neuro-pathic pain induced by nerve injury. The analgesic effect of tetrahydropalmatine on neuropathic pain may be due to the increased expression of Cav1 . 2 protein in DRG neurons.
7.Functional genomic approaches to explore secondary metabolites in medicinal plants.
Yongbo WANG ; Zhong LIU ; Aihua ZHAO ; Mingming SU ; Guoxiang XIE ; Wei JIA
China Journal of Chinese Materia Medica 2009;34(1):6-10
Extensive genomic data concerning medicinal plants are rather scarce and insights of the secondary metabolic pathways and their regulatory mechanism are insufficient, hampering the broad application of cell or tissue cultivation and metabolic engineering to producing high-value secondary metabolites. The integration of cDNA-AFLP based transcript profiling and metabolomics, a new development of functional genomic approaches could establish correlations between the changes of secondary metabolites and expressions of related genes. It has manifested widely applicative prospects in seeking genes involved in biosynthesis of secondary metabolites and exploring secondary metabolic pathways. Functional genomic approaches are promising trends in the field of medicinal plants secondary metabolites research and will lead to better utilization of natural medicinal resources.
Genes, Plant
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genetics
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Genomics
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Metabolic Networks and Pathways
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Plants, Medicinal
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genetics
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metabolism
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Proteomics
8.Effect of mobile phone-based health education on independent living ability of postoperative patients with hypertensive intracerebral hemorrhage
Zhongqin WAN ; Yangyang DUAN ; Faqing LONG ; Mingming DAI ; Qingjie SU
Modern Clinical Nursing 2018;17(4):17-22
Objective To explore the effect of mobile phone-based health education on independent living ability of postoperative patients with hypertensive intracerebral hemorrhage. Methods Sixty patients with postoperative hypertensive intracerebral hemorrhage who underwent craniotomy in our hospital during March 2016 and December 2017 were divided into experimental and control groups, 30 cases in each group, according to the random number table method. Functional training conducted during hospitalization in both groups. After discharge, the control group used a telephone for follow-ups every 2 weeks and took part in a face-to-face training in the first month to implement continuous nursing intervention for a total of 3 months. After discharge, in the experimental group, various information forms of rehabilitation training for hypertensive intracerebral hemorrhage were comprehensively integrated, and mobile phone education was used for a total of 3 months in addition to the training as in the control group. The two groups were compared in terms of independent living ability between the two groups. Result The scores of independent living ability and self-care ability, action ability, metastatic ability, social cognitive ability and communication ability of the experimental group were significantly higher than those of the control group (P<0.05). Conclusion The mobile phone-based education can promote the effect of rehabilitation exercise in patients with hypertensive intracerebral hemorrhage, so as to promote the independent living ability of patients.
9.Classiifcation and Risk-factor Analysis of Postoperative Cardio-pulmonary Complications after Lobectomy in Patients with Stage I Non-small Cell Lung Cancer
LAI YUTIAN ; SU JIANHUA ; WANG MINGMING ; ZHOU KUN ; DU HENG ; HUANG JIAN ; CHE GUOWEI
Chinese Journal of Lung Cancer 2016;19(5):286-292
Background and objective hTere are incresing lung cancer patients detected and diagnosed at the in-termediate stage when the pre-malignant or early lesions are amenable to resection and cure, owing to the progress of medical technology, the renewal of detection methods, the popularity of medical screening and the improvement of social health con-sciousness. hTe aim of this study is to investigate the risk factors of the occurrence of postoperative cardio-pulmonary compli-cations in stage I non-small cell lung cancer (NSCLC) patients, based on routine laboratory tests, basic characteristics, and in-traoperative variables in hospital.Methods hTe 421 patients atfer lobectomy in patients with stage I NSCLC at the West China Hospital of Sichuan University from January 2012 to December 2013 were included into the study and stratiifed into complica-tion group and non-complication group, according to whether to occur postoperative cardio-pulmonary complications atfer lobectomy in 30 days.Results Of them, 64 (15.2%) patients were ifnally identiifed and selected into the complication group, compared with 357 (84.8%) in non-complication group: pneumonia (8.8%, 37/421) was the primary complication, and other main complications included atelectasis (5.9%, 25/421), pleural effusion (≥middle) (5.0%, 21/421), persistent air leak (3.6%, 15/421); hTe operation time (P=0.007), amount of blood loss (P=0.034), preoperative chronic obstructive pulmonary disease (COPD) (P=0.027), white blood cell (WBC) count (P<0.001), neutrophil-lymphocyte ratio (NLR) (P<0.001) were signiif-cantly different between the two groups. According to the binary logistics regression analysis, preoperative COPD (OR=0.031, 95%CI: 0.012-0.078,P<0.001) and WBC count (OR=1.451, 95%CI: 1.212-1.736,P<0.001) were independent risk factors for postoperative cardio-pulmonary complications.Conclusion Among an array of clinical variables in hospital, operation time, preoperative white blood cell count, preoperative COPD, may be the independent risk factors of the occurrence of postopera-tive cardio-pulmonary complications.
10.Effects of endotoxin/lipopolysaccharide on early apoptosis of human neutrophil through PIM3
Mingming SONG ; Ping LI ; Xinyuan JIN ; Jiandong SU ; Bingwei SUN
Chinese Journal of Burns 2018;34(11):809-814
Objective To explore the effects of endotoxin/lipopolysaccharide (LPS) on early apoptosis of human neutrophil through PIM3.Methods Venous blood samples were collected from a healthy adult volunteer to isolate neutrophils.The neutrophils were divided into control group,LPS group,and LPS + PIM447 group according to the random number table.No treatment was given to the cells in control group.The cells in LPS group underwent LPS stimulation (1 μL,1 μg/mL).The cells in LPS + PIM447 group underwent PIM447 (1 μL,final amount-of-substance concentration of 5 μmol/L) intervention 30 min before having the same LPS stimulation as that in LPS group.After conventional culture for 1 h,the early cell apoptosis rate was determined with flow cytometer;the generation level of reactive oxygen species (ROS) was assessed with dihydrogenrhodamine 123 fluorescent probe staining method;and the level of PIM3 was detected by Western blotting.After conventional culture for 2 h,the cell chemotaxis distance was measured by agarose chemotaxis cell model.The sample numbers of each group in the 4 experiments were all 5.Data were processed with one-way analysis of variance and Student-Newman-Keuls test.Results (1) The early apoptosis rate of cells in LPS group [(0.891 ± 0.012) %] was close to that in control group [(1.351 ± 0.183)%,P >0.05)].The early apoptosis rate of cells in LPS+PIM447 group [(82.057±0.121)%]was higher than that in LPS group (P < 0.01).(2) The cell chemotaxis distance of cells in LPS group [(984 ±5) μm] was significantly shorter than that in control group [(2 241 ±7) μm,P <0.01].The cell chemotaxis distance of cells in LPS + PIM447 group [(1 785 ± 1 1) μm] was significantly longer than that in LPS group (P < 0.05).(3) The generation level of ROS in cells of LPS group was significantly higher than that in control group (P < 0.05).The generation level of ROS in cells of LPS + PIM447 group was significantly lower than that in LPS group (P < 0.05).(4) The expression level of PIM3 in cells of LPS group (1.297 ±0.015) was significantly higher than that in control group (0.789 ±0.021,P <0.05).The expression level of PIM3 in cells of LPS + PIM447 group (0.731 ± 0.011) was significantly lower than that in LPS group (P <0.05).Conclusions LPS stimulation can reduce the early apoptosis of human neutrophils.Pre-intervention with PIM447 can significantly increase the early apoptosis of neutrophils after LPS stimulation,recover the chemotaxis,and inhibit the production of ROS.The mechanism may be related to LPS promoting the expression of PIM3.