1.The expressions of matrix metalloproteinase and their inhibitor,and ICAM-1,VCAM-1 in lung tissue associated with COPD
Yingjun KONG ; Wenxue SUN ; Jianmin HUO
Chinese Journal of Practical Internal Medicine 2006;0(16):-
Objective To investigate the change of MMP-9,TIMP-1,ICAM-1 and VCAM-1 expression in serum from patients with COPD,as well as the correlation between the expressions of these factors and lung function.Methods Enzyme-linked Immunosorbent Assay(ELISA)was used to determine the levels of MMP-9,TIMP-1,ICAM-1 and VCAM-1 in serum from 58 patients with COPD and 30 samples from healthy donors in order to better understand the correlation between the expression of these factors and airflow obstruction.Results The serum levels of MMP-9,TIMP-1,ICAM-1 and VCAM-1[(128.89?115.84),(228.28?107.13),(203.98?70.37) and (352.98?117.73)?g/L]from patients with COPD were statistically and significantly higher than the control group[(30.65?18.43),(133.69?41.41),(148.35?23.77) and (233.57?36.65)?g/L],P
2.Purification of recombinant human antithrombin III expressed in a goat mammary bioreactor.
Cuijie WANG ; Yongdong HUANG ; Yingjun KONG ; Jian LUO ; Guifeng ZHANG ; Dongxu ZHAO ; Zhiguo SU ; Guanghui MA
Chinese Journal of Biotechnology 2014;30(10):1634-1638
Antithrombin III (AT III) is the most important anti-clotting substance. Recombinant human antithrombin III (rhAT III) expressed in transgenic goat milk attracts more and more attention. Develop an effective purification route for rhAT III is vital to its industrial production. An efficient purification method was developed for the rapid purification of rhAT III by isoelectric precipitation and heparin affinity chromatography. First, casein was effectively removed by isoelectric precipitation. rhAT III was further purified by heparin affinity chromatography. In the process of heparin affinity chromatography, the effects of pH and temperature on the stability of rhAT III were studied, and the effects of operating conditions, elution gradient, flow rate and sample loaded, on the purification efficiency were also studied. Under the optimized conditions, the protein recovery of rhAT III was about 90% with purity over 99%, while its activity recovery was about 50%. Such a purification process is very simple and effective, and it would provide a valuable reference for the further scaling-up of industrial production.
Animals
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Animals, Genetically Modified
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Antithrombin III
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biosynthesis
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Chromatography, Affinity
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Female
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Goats
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Heparin
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Humans
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Mammary Glands, Animal
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metabolism
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Milk
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chemistry
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Recombinant Proteins
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biosynthesis
3.The risk factors and the etiology analysis of early infection in recipients following liver transplantation
Xiuhua XIE ; Yingjun JIANG ; Man XIE ; Xinjuan KONG ; Wei RAO ; Yunjin ZANG ; Tingting WANG
Chinese Journal of Organ Transplantation 2017;38(4):200-205
Objective To explore the risk factors,the distribution of etiology and drug resistance status of patients with early infection (3 months) after liver transplantation,and to provide reference for clinical diagnosis and treatment.Methods The clinical data of 112 recipients from February 2014 to December 2015 were collected,and logistic regression analysis was performed on the risk factors of early postoperative infection in liver transplant patients.The independent risk factors of infection after liver transplantation were screened out.At the same time,the results of pathogen culture and drug sensitivity test were statistically described.Results The independent risk factors for infection at 3th month after liver transplantation included the operative time ≥600 min [P =0.003,odds ratio (OR) =9.996,95 % confidence interval (95 % CI),2.221-44.981],intensive care unit (ICU) ≥6 days (P =0.010,OR =6.306,95% CI =1.563-25.437),Child-Pugh grade of C (P =0.023,OR =6.298,95% CI =1.294-30.659).Of the 112 liver transplant recipients,59 had an infection (52.68%),and 168 stains of pathogens were isolated.The positive rate of the specimens was highest in sputum,followed by bile,ascites,drainage and catheter end,blood,deep vein catheter,middle urinary,pleural effusion and peripherally inserted central catheter (PICC).The detectable rate of gram-negative bacteria,gram-positive bacteria,fungi and viruses was 46.43% (78 strains),29.76% (50 strains),18.45% (31 strains),and 5.36% (9 strains) respectively.Infection occurred mainly within 1 month after surgery,accounting for about 80.36% (135 strains),especially at 1st week after surgery,accounting for about 34.52% (58 strains).Gram-positive bacteria had a higher drug resistance rate,including penicillins,macrolides,aminoglycosides,quinolones,linamides,etc.especially in the highest rate of Enterococcus faeciurr.Gram-negative bacteria were individualized based on the different strains of the bacteria,and they were relatively low in the resistance of the carbapene.Conclusion Infection is one of the most common complications after liver transplantation.To reduce the incidence of infection after liver transplantation,efforts should be made to shorten the duration of operation and ICU stay time,improve the basic nutritional status of recipients,and enhance monitoring of the recipient's infection after liver transplantation,to further increase the survival rate of postoperative liver transplantation recipients and improve the quality of life.
4.Collagen quantitation by detection of marker peptides with HPLC-MS.
Kun SUN ; Fan YANG ; Yingjun KONG ; Jiyao KANG ; Wei CAO ; Xiaoyan YANG ; Shenghua ZHA ; Guifeng ZHANG ; Minglin WANG
Chinese Journal of Biotechnology 2015;31(11):1660-1668
A method for quantitation of collagen was established by detecting marker peptide with high performance liquid chromatography-mass spectrometry (HPLC-MS). Theoretical marker peptides were selected by sequence comparison. Bovine collagen type I was digested with trypsin. Marker peptides typical for collagen type I were identified with HPLC-MS. The relationship between the abundance of marker peptides and collagen concentration was established. The results show that GEAGPSGPAGPTGAR and the other 5 peptides showed high resolution during chromatographic separation and high signal intensity during MS analysis. Peptide signal intensity and collagen concentration showed a good linear relationship in the range from 0.1 to 3 mg/mL. Bovine tendon and collagen sponge were used as actual samples and collagen contents were determined as 90.2% and 93.4% respectively. Quantitation of marker peptides of collagen was a feasible method to identify and quantify collagens in medical device research and development.
Animals
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Cattle
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Chromatography, High Pressure Liquid
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Collagen Type I
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analysis
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Mass Spectrometry
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Peptides
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analysis
5.Risk factors analysis for the formation of pancreatic pseudocysts in acute pancreatitis
Liyu FAN ; Yingjun JIANG ; Xinjuan KONG ; Jun WU ; Qi ZHANG ; Hong LIU ; Zibin TIAN
Chinese Journal of Pancreatology 2018;18(1):20-24
Objective To investigate the risk factors of pancreatic pseudocysts(PPC) in patients with acute pancreatitis (AP) in a retrospective cohort study. Methods 460 AP patients with complete follow-up data admitted in Affiliated Hospital of Qingdao University from January 2004 to March 2012 were retrospectively analyzed,who were divided into PPC group and control group. Age,gender,body mass index(BMI),history of diabetes,etiology,the presence of ascites and hydrothorax,the presence of abdominal mass,the presence of acute fluid collection, APACHEⅡ score at 48 h admission, CT severity index (CTSI), serum albumin, amylase,LDH,ALP, BUN, Cr, TG, TB, conjugated bilirubin, CRP, serum calcium and other laboratory markers were recorded. Univariate logistic regression analysis was used to select the factors that were statistically different between two groups, and multivariate logistic regression analysis was performed to determine the independent risk factors for AP complicated with PPC. Results 143(31.1%) of 460 AP patients developed PPC. On univariate analysis, a total of 11 factors including male sex, BMI ≥28 kg/m2, history of diabetes, alcoholic pancreatitis, ascites, pleural effusion, palpable abdominal mass, acute fluid collections,APACHEⅡscore,CTSI≥7 and serum albumin were statistically different between two groups. On multiple logistic regression analysis, it was shown that male sex (OR 3.23, 95% CI 1.560~ 6.301, P=0.03),history of diabetes (OR 2.23,95% CI 1.021~3.920,P=0.04), ascites (OR 1.62,95% CI 0.652~2.432, P=0.01), pleural effusion (OR 2.43, 95% CI 1.201~7.201, P=0.03), a palpable abdominal mass(OR 1.83,95% CI 0.737~4.320,P<0.001) and CTSI≥7(OR 5.12,95% CI 1.890~14.012, P<0.001) were independent risk factors significantly associated with the PPC formation. Conclusions The male sex, diabetic history, ascites, pleural effusion, palpable abdominal mass and high CTSI score were the independent risk factors of PPC formation in AP.
7.Incidence and risk factors analysis of colorectal adenomatous polyps in recipients after liver transplantation
Xiaoqing JIANG ; Wei RAO ; Peng ZHANG ; Yingjun JIANG ; Xinjuan KONG ; Man XIE
Organ Transplantation 2022;13(3):393-
Objective To analyze the incidence and risk factors of colorectal adenomatous polyps (CAP) in recipients after liver transplantation. Methods Seventy-seven liver transplant recipients and 231 individuals undergoing colonoscopy during physical examination were recruited in this study. The incidence of CAP and pathological examination results were analyzed. Clinical data of liver transplant recipients were collected. According to the incidence of CAP, liver transplant recipients were divided into the CAP group (
8.Diagnosis and treatment of de novo gastric cancer after liver transplantation: 3 cases reports and literature review
Qing LI ; Man XIE ; Yingjun JIANG ; Lina MA ; Yunjin ZANG ; Wei RAO ; Xinjuan KONG
Chinese Journal of Organ Transplantation 2020;41(6):358-361
Objective:To summarize the experience of diagnosing and treating de novo gastric cancer after liver transplantation(LT).Methods:The clinical data were analyzed for 3 LT patients with de novo gastric cancer during follow-ups.Results:The mean diagnostic age was 57(47~67)years, mean time interval between LT and diagnosis of de novo gastric cancer 82(40~122)months and mean follow-up time 23(4~42)months. After surgical resections, 2 survived and another died of recurrence.Conclusions:LT recipients are recommended for regular screening of de novo malignancies. Regular endoscopic screening of gastric tumors contributes to early detection, diagnosis and treatment. It may improve long-term survival outcomes in LT recipients.
9.Studies on constituents of Oldenlandia diffusa.
Ying-Jun ZHOU ; Kong-Song WU ; Guang-Yao ZENG ; Jian-Bing TAN ; Kang-Ping XU ; Fu-Shuang LI ; Gui-Shan TAN
China Journal of Chinese Materia Medica 2007;32(7):590-593
OBJECTIVETo investigate the chemical constituents of Oldenlandia diffusa.
METHODThe column chromatography with polyamide Sephadex LH -20, silica gel as packing materials and HPLC, were used to separate and purify the chemical components. The structures were elucidated on the basis of physicochemical properties and spectral data.
RESULTNine compounds were isolated and identified as 2, 6-dihydroxy-1-methoxy-3-methylanthraquinone (1), 2-hydroxy-1-methoxy-3-methylanthraquinone (2), 2-hydroxy-3-methylanthraquinone (3), quercetin-3-O-[2-O-(6-O-E-sinapoyl)-beta-D-glucopyranosyl]-beta-glucopyranoside (4), quercetin-3-O-[2-O-(6-O-E-feruloyl)-beta-D-glucopyranosyl]-beta-glucopyranoside (5), kaempferol-3-O-[2-O-(6-O-E-feruloyl)-beta-D-glucopyranosyl]-beta-galactopyranoside (6), quercetin-3-O-(2-O-beta-D-glucop-yranosyl)-beta-D-glucopyranoside (7), rutin (8) and quercertin (9).
CONCLUSIONCompounds 1 and 8 were obtained from this plant for the first time, and compound 1 was a new compound.
Anthraquinones ; chemistry ; isolation & purification ; Molecular Conformation ; Molecular Structure ; Oldenlandia ; chemistry ; Plants, Medicinal ; chemistry ; Quercetin ; chemistry ; isolation & purification ; Rutin ; chemistry ; isolation & purification
10.Immunological regulation of CD70/CD27 pathway and the expression of CD70 in tumor
Zhenzhen LIU ; Yingjun KONG ; Wenxue SUN ; Shimin LI ; Min ZHANG ; Hesong YIN
Journal of International Oncology 2018;45(8):487-489
CD70/CD27 pathway plays an important role in human immune regulation.The role of CD70/CD27 pathway in immune regulation is mainly to promote the activation and proliferation of T cells,induce the differentiation and formation of effector T cells and memory T cells,and interfere with regulatory T cells.In addition,the high level of CD70 expression in some tumor cells provides a new way for tumor immunotherapy.