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Liang XX, Zhu C, Zhang W, Du YN, Xu L, Liu L, Zhang Y, Han MY. Nucleophilic Allylation of Acylsilanes in Water: An Effective Alternative to Functionalized Tertiary α-Silylalcohols. J Org Chem 2023; 88:12087-12099. [PMID: 37497648 DOI: 10.1021/acs.joc.3c00668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
A nucleophilic allylation of acylsilanes in water was developed, generating versatile functionalized tertiary α-silyl alcohols in high yields. With the assistance of hydrogen bonding, a reaction model of less reactive acylsilane was achieved. Unlike the conventional strategy, transition metals and an additional Lewis acid catalyst were not required, and rate acceleration was observed in water.
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Affiliation(s)
- Xiu-Xia Liang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Chen Zhu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Wang Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Ya-Nan Du
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Xu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lihua Liu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Yicheng Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Man-Yi Han
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
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Du YN, Cai W. [Discussion regarding the reduction of the alanine transaminase threshold value in patients with chronic hepatitis B virus infection undergoing antiviral therapy]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:319-321. [PMID: 37137861 DOI: 10.3760/cma.j.cn501113-20220615-00323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- Y N Du
- Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - W Cai
- Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Du YN, Yang XY, Zeng Q. [Research progress of irradiation injuries anti-agents]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:237-240. [PMID: 37006154 DOI: 10.3760/cma.j.cn121094-20210813-00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
Irradiation injuries anti-agents refer to drugs that can inhibit the initial stage of radiation injuries, or reduce the development of radiation injuries and promote the recovery of injuries when used early after irradiation exposure. According to the mechanism of action and the time of intervention, the irradiation injuries anti-agents are divided into four categories: radioprotectors, radiomitigators, radiation therapeutics for external radiation exposure, and anti-agents for internalized radionuclides. In this paper, the research progress of irradiation injuries anti-agents in recent years is reviewed.
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Affiliation(s)
- Y N Du
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - X Y Yang
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - Q Zeng
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
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Yao NH, Du YN, Xiong JX, Xiao Y, He HH, Xie ZF, Huang D, Song Q, Chen J, Yan D, Chao HJ. Microbial detoxification of 3,5-xylenol via a novel process with sequential methyl oxidation by Rhodococcus sp. CHJ602. Environ Res 2023; 220:115258. [PMID: 36634895 DOI: 10.1016/j.envres.2023.115258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/29/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
The compound 3,5-xylenol is an essential precursor used in pesticides and industrial intermediate in the disinfectants and preservatives industry. Its widespread application makes it an important source of pollution. Microbial bioremediation is more environmentally friendly than the physicochemical treatment process for removing alkylphenols from a polluted environment. However, the 3,5-xylenol-degrading bacteria is unavailable, and its degradation mechanism remains unclear. Here, a 3,5-xylenol-metabolizing bacterial strain, designated Rhodococcus sp. CHJ602, was isolated using 3,5-xylenol as the sole source of carbon and energy from a wastewater treatment factory. Results showed that strain CHJ602 maintained a high 3,5-xylenol-degrading performance under the conditions of 30.15 °C and pH 7.37. The pathway involved in 3,5-xylenol degradation by strain CHJ602 must be induced by 3,5-xylenol. Based on the identification of intermediate metabolites and enzyme activities, this bacterium could oxidize 3,5-xylenol by a novel metabolic pathway. One methyl oxidation converted 3,5-xylenol to 3-hydroxymethyl-5-methylphenol, 3-hydroxy-5-methyl benzaldehyde, and 3-hydroxy-5-methylbenzoate. After that, another methyl oxidation is converted to 5-hydroxyisophthalicate, which is metabolized by the protocatechuate pathway. It is catalyzed by a series of enzymes in strain CHJ602. In addition, toxicity bioassay result indicates that 3,5-xylenol is toxic to zebrafish and Rhodococcus sp. CHJ602 could eliminate 3,5-xylenol in water to protect zebrafish from its toxicity. The results provide insights into the bioremediation of wastewater contaminated 3,5-xylenol.
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Affiliation(s)
- Ni-Hong Yao
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Ya-Nan Du
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Jia-Xi Xiong
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Ying Xiao
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Hang-Hang He
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Ze-Feng Xie
- Hubei Accurate Inspection & Testing Co., Ltd., Wuhan, 430223, PR China
| | - Duo Huang
- Hubei Accurate Inspection & Testing Co., Ltd., Wuhan, 430223, PR China
| | - Qi Song
- Hubei Accurate Inspection & Testing Co., Ltd., Wuhan, 430223, PR China
| | - Jing Chen
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Dazhong Yan
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Hong-Jun Chao
- School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, PR China.
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Wang T, Du YN, Sun J, Song H, Jiang Y, Liu F, Lv X. Drug-eluting bead transarterial chemoembolization could improve the hepatic hemodynamics of patients with unresectable hepatocellular carcinoma: a retrospective cohort study. J Gastrointest Oncol 2023; 14:302-311. [PMID: 36915464 PMCID: PMC10007932 DOI: 10.21037/jgo-23-76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/10/2023] [Indexed: 02/24/2023] Open
Abstract
Background Transarterial chemoembolization (TACE) is widely used for patients with unresectable hepatocellular carcinoma (HCC); however, previous studies have demonstrated that conventional TACE (cTACE) might affect hepatic hemodynamics, which both associate with liver cirrhosis and survival. Drug-eluting bead TACE (DEB-TACE) improves treatment efficacy and safety, but its effects on the hepatic hemodynamics of HCC patients with cirrhosis remain unknown. Methods This retrospective cohort study included unresectable HCC patients treated with DEB-TACE from April 2018 to September 2020, who had limited tumor burden and liver function. The hepatic hemodynamics was measured by hepatic venous pressure gradient (HVPG) using occlusion balloon catheter before and after treatment. Baseline characteristics of demography, laboratory (tumoral and liver-function) and hepatic hemodynamics were compared between patients with and without clinically significant portal hypertension (CSPH). Laboratory examination and imaging assessments were performed 4-6 weeks; overall survival (OS) was defined as the time from DEB-TACE initiation until death or last follow-up. Results Twenty-four eligible consecutive HCC patients were included, with a median age of 58.0 years and 54.2% in Child-Pugh A class. During a median follow-up of 9.8 months, median OS for the whole cohort of patients reached 10.0 months. Kaplan-Meier survival curves and Cox regression analyses demonstrated that age >60 years, ascites, Eastern Cooperative Oncology Group (ECOG) score of 1, Child-Pugh B class, Model for End-Stage Liver Disease (MELD) score >10, and albumin (ALB) <35 g/L were prognostic factors for decreased OS (P<0.05). Importantly, hepatic hemodynamics were significantly improved in patients after treatment with DEB-TACE (7.5 vs. 5.3 mmHg of HVPG, P<0.001), especially for those with CSPH (13.6 vs. 10.2 mmHg of HVPG, P=0.014). Conclusions DEB-TACE can improve hepatic hemodynamics in HCC patients, especially those with CSPH. Combing these findings with its effects on tumor, DEB-TACE might be more suitable for HCC patients with cirrhosis.
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Affiliation(s)
- Tao Wang
- Department of Interventional Radiology, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing, China.,Department of Interventional Radiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Ya-Nan Du
- Department of Nuclear Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jiewei Sun
- Department of Interventional Radiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Haiyang Song
- Department of Interventional Radiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yutian Jiang
- Department of Interventional Radiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Fuquan Liu
- Department of Interventional Radiology, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing, China
| | - Xiaoning Lv
- Department of Nuclear Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
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Yang Q, Wang YR, Du YN, Chen HQ. Heat-induced arachin and basil seed gum composite gels improved by NaCl and microbial transglutaminase: Gelling properties and structure. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zou L, Zhang H, Wang Q, Zhong W, Du Y, Liu H, Xing W. Simultaneous liver steatosis, fibrosis and iron deposition quantification with mDixon quant based on radiomics analysis in a rabbit model. Magn Reson Imaging 2022; 94:36-42. [PMID: 35988836 DOI: 10.1016/j.mri.2022.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/08/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022]
Abstract
PURPOSE To evaluate the feasibility of simultaneous quantification of liver fibrosis, liver steatosis and abnormal iron deposition using mDixon Quant based on radiomics analysis, and to eliminate the interference among different histopathologic features. METHODS One hundred and twenty rabbits that were administered CCl4 for 4-16 weeks and a cholesterol rich diet for the initial 4 weeks in the experimental group and 20 rabbits in the control group were examined using mDixon. Radiomics features of the whole liver were extracted from PDFF and R2* and radiomics models for discriminating steatosis: S0-S1 vs. S2-S4, fibrosis: F0-F2 vs. F3-F4 and iron deposition: normal vs. abnormal were constructed respectively and evaluated using receiver operating characteristic (ROC) curves with the histopathological results as reference standard. Combined corrected models merging the radscore and the other two histopathologic features were evaluated using multiple logistic regression analyses and compared with radiomics models. RESULTS The area under the ROC curve (AUC) of the radiomics model with PDFF features was 0.886 and 0.843 in the training and the test set, respectively, for the diagnosis of liver steatosis grade S0-1 and S2-S4. The radiomics model based on R2* features were 0.815 and 0.801 for distinguishing F0-F2 and F3-F4 and 0.831 and 0.738 for discriminating abnormal iron deposition in the training and test set, respectively. The corrected model for liver steatosis and fibrosis (0.944 and 0.912 in the test set) outperformed the radiomics models by eliminating the interference of histopathologic features(P < 0.05), but had comparable diagnostic performance for abnormal iron deposition(P > 0.05). CONCLUSIONS It is feasible for mDixon to simultaneously quantify whole liver steatosis, fibrosis and iron deposition based on radiomics analysis. It is valuable to minimize the interference of different pathological features for the assessment of liver steatosis and fibrosis.
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Affiliation(s)
- LiQiu Zou
- Department of Radiology, Sixth Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Hao Zhang
- Department of Radiology, Sixth Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Qing Wang
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213200, China
| | - WenXin Zhong
- Department of Radiology, Sixth Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - YaNan Du
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213200, China
| | - HaiFeng Liu
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213200, China
| | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213200, China.
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Zou LQ, Liu HF, Du YN, Xing W. Effect of Iron Deposition on Native T1 Mapping and Blood Oxygen Level Dependent for the Assessment of Liver Fibrosis in Rabbits With Carbon Tetrachloride Intoxication. Acad Radiol 2022; 30:873-880. [PMID: 35811218 DOI: 10.1016/j.acra.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 11/18/2022]
Abstract
RATIONALE AND OBJECTIVES This study aimed to explore the effect of iron deposition on native T1 mapping and blood oxygen level-dependent (BOLD) imaging in detecting liver fibrosis (LF) in a rabbit model. MATERIALS AND METHODS An LF group (n = 100) was established by subcutaneously injecting 50% carbon tetrachloride (CCl4) oil solution, and 20 normal rabbits composed a control group. Native T1 mapping and BOLD were performed, and the T1native and R2* quantitative parameters were analyzed by receiver operating characteristic (ROC) and multiple logistic regression analyses, with histopathological results and liver iron content (LIC) serving as reference standards. RESULTS In total, 18, 17, 16, 18, and 15 rabbits were histopathologically diagnosed with LF stages F0, F1, F2, F3, and F4, respectively. T1native (r = 0.47), R2* (r = 0.75) and LIC (r = 0.61) increased with LF stage progression (p < 0.001). Compared to T1native values, R2* performed better in diagnosing the LF stage, especially for distinguishing F1-F2 from F3-F4 (AUC = 0.66 vs. 0.91, p = 0.01). Combined with the LIC, both T1native and R2* showed improved diagnostic value in comparison to the individual imaging techniques, particularly for diagnosing F0 vs. F1-F2 and F0 vs. F1-F4, with AUC values of 0.90 vs. 0.70 (p = 0.01) and 0.93 vs. 0.77 (p = 0.01) for T1native + LIC vs. LIC, respectively. CONCLUSION BOLD imaging performed better than native T1 mapping in predicting and diagnosing LF stage progression. The decrease in diagnostic accuracy caused by the deposition of liver iron is a potential pitfall in the assessment of LF with BOLD imaging and native T1 mapping.
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Affiliation(s)
- Li-Qiu Zou
- Department of Radiology, Sixth Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Hai-Feng Liu
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Ya-Nan Du
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
| | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China.
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Wang YR, Yang Q, Du YN, Chen HQ. Evaluation of the impact of stirring on the formation, structural changes and rheological properties of ovalbumin fibrils. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107615] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
OBJECTIVE The aim of the present study was to investigate whether systemic immune-inflammation index (SII) and neutrophil-to-platelet ratio (NLR) were associated with bone mineral density (BMD) in postmenopausal women. METHODS In this cross-sectional study, we enrolled 413 postmenopausal women who never received menopause hormone therapy. The relationship between SII, NLR, and BMD was investigated by linear regression analysis. RESULTS Significant inverse association was observed between SII and BMD in postmenopausal women. The mean BMD in each quartile of SII level were 0.923, 0.914, 0.900, and 0.876 g/cm2, respectively (p = .011). After adjusting for covariates, SII levels remained significantly associated with BMD (regression coefficients for quartiles 1-3 vs. quartile 4 were 0.035, 0.029, and 0.023, respectively; p for trend <.05). An inverse association was also found between NLR and BMD in postmenopausal women. However, there was no significant association between NLR and BMD after adjusting for covariates. CONCLUSION The quartile of SII was negatively associated with the mean BMD in postmenopausal women, independent of age, body mass index, sex hormone levels, and other factors. Therefore, SII can be used as a new predictor of bone loss in postmenopausal women.
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Affiliation(s)
- Y N Du
- Department of Obstetrics and Gynecology, Nanjing Medical University, Nanjing, China
| | - Y J Chen
- Department of the Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - H Y Zhang
- Department of Obstetrics and Gynecology, Hangzhou Women's Hospital, Hangzhou, China
| | - X Wang
- Department of Obstetrics and Gynecology, Nanjing Medical University, Nanjing, China
| | - Z F Zhang
- Department of Obstetrics and Gynecology, Nanjing Medical University, Nanjing, China
- Department of the Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Obstetrics and Gynecology, Hangzhou Women's Hospital, Hangzhou, China
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Liu HF, Wang Q, Du YN, Ding JL, Zhang JG, Xing W. Whole-liver histogram analysis of blood oxygen level-dependent functional magnetic resonance imaging in evaluating hepatic fibrosis. Ann Palliat Med 2021; 10:2567-2576. [PMID: 33440975 DOI: 10.21037/apm-20-1753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/30/2020] [Indexed: 11/06/2022]
Abstract
BACKGROUND To explore whole-liver histogram analysis (HA) with blood oxygen level-dependent functional magnetic resonance imaging (BOLD-fMRI) in evaluating and diagnosing hepatic fibrosis (HF) in a CCl4-induced rabbit model. METHODS One hundred rabbits were classified as CCl4-induced HF groups (n=80) and control group (n=20), and were scheduled for BOLD-fMRI examination on a 3.0T scanner. Whole-liver HA metrics, including the mean, median, skewness, kurtosis, inhomogeneity, entropy, and nth percentiles, were extracted from the R2* map. Parameters were compared among the different HF stages using receivers operating characteristic analysis and Mann-Whitney U-test. RESULTS In all, 17, 18, 19, 17, and 15 rabbits were pathologically diagnosed as F0, F1, F2, F3, and F4, respectively. HA parameters, including the median, inhomogeneity, entropy, and the 75th and 90th percentiles of the BOLD R2* map, demonstrated significant positive correlations with the fibrosis stage (r=0.226-0.718, P≤0.039). The 75th percentiles demonstrated higher diagnostic efficacy than the other HA parameters in fibrosis staging, with an AUC value of 0.86 for ≥ F1, 0.87 for ≥ F2, 0.87 for ≥ F3, and 0.86 for ≥ F4. CONCLUSIONS BOLD-fMRI HA provides increased diagnostic performance in staging HF, especially for the 75th percentiles.
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Affiliation(s)
- Hai-Feng Liu
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China
| | - Qing Wang
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China
| | - Ya-Nan Du
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China
| | - Jiu-Le Ding
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China
| | - Jing-Gang Zhang
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China
| | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, China.
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Abstract
The aim of this study was to screen the differentially expressed circular ribonucleic acid (circRNA) in non-small cell lung cancer (NSCLC) and explore its functional mechanism. Differentially expressed circRNAs in tumor tissues of NSCLC patients were detected via gene microarray and reverse transcriptionquantitative polymerase chain reaction (RT-qPCR). The associaton between their expressions and the clinical phenotypes was explored combined with clinical data. The effect of overexpression of hsa_circ_0004050 on the proliferation of A549 cells was detected via cell counting kit-8 (CCK-8) assay and CFSE assay. The effect of overexpression of hsa_circ_0004050 (human circular ribonucleic acid_0004050) on the apoptosis of A549 cells was detected using the Annexin V-FITC/PI kit. Then the direct-acting miRNAs of hsa_circ_0004050 were screened using bioinformatics software and luciferase reporter assay, and the direct targets of miR- 1233-3p were explored using bioinformatics software and luciferase reporter assay combined with RTqPCR and Western blotting. The effects of overexpression of miR-1233-3p or knockdown of dual specificity phosphatase 9 (DUSP9) on the cell proliferation and apoptosis affected by overexpression of hsa_circ_0004050 were detected. Western blotting was performed to detect the effects of hsa_circ_0004050 on the extracellular signal-regulated kinase (ERK)/c-Jun N-terminal kinase (JNK) signaling pathway. The expression of hsa_ circ_0004050 was significantly lower in tumor tissues than that in para-carcinoma tissues in NSCLC patients. The expression of hsa_circ_0004050 was significantly correlated with TNM stage, tumor size and lymph node metastasis. The results of survival analysis showed that the survival time of patients with a high expression of hsa_circ_0004050 was obviously prolonged. According to the results of phenotype assay, hsa_circ_0004050 could promote apoptosis and inhibit proliferation of A549 cells. In terms of its mechanism, hsa_circ_0004050 could markedly increase the protein expression of DUSP9 via targeting miR-1233-3p in A549 cells, thereby inhibiting the ERK/JNK signaling pathway. Hsa_circ_0004050 may serve as a potential therapeutic target for NSCLC or a biomarker for the diagnosis of NSCLC in the future.
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Affiliation(s)
- Y Wang
- Department of Radiation Oncology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - R K Zang
- Department of Radiation Oncology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Y N Du
- Department of Radiation Oncology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
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Wang Q, Liu H, Zhu Z, Sheng Y, Du Y, Li Y, Liu J, Zhang J, Xing W. Feasibility of T1 mapping with histogram analysis for the diagnosis and staging of liver fibrosis: Preclinical results. Magn Reson Imaging 2020; 76:79-86. [PMID: 33242591 DOI: 10.1016/j.mri.2020.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/10/2020] [Accepted: 11/14/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE To compare the diagnostic accuracy of parameters derived from the histogram analysis of precontrast, 10-min hepatobiliary phase (HBP) and 20-min HBP T1 maps for staging liver fibrosis (LF). METHODS LF was induced in New Zealand white rabbits by subcutaneous injections of carbon tetrachloride for 4-16 weeks (n = 120), and 20 rabbits injected with saline served as controls. Precontrast, 10-min and 20-min HBP modified Look-Locker inversion recovery (MOLLI) T1 mapping was performed. Histogram analysis of T1 maps was performed, and the mean, median, skewness, kurtosis, entropy, inhomogeneity and 10th/25th/75th/90th percentiles of T1native, T110min and T120min were derived. Quantitative histogram parameters were compared. For significant parameters, further receiver operating characteristic (ROC) analyses were performed to evaluate the potential diagnostic performance in differentiating LF stages. RESULTS Finally, 17, 20, 21, 21 and 20 rabbits were included for the F0, F1, F2, F3, and F4 pathological grades of fibrosis, respectively. The mean/75th of T1native, entropy of T110min and entropy/mean/median/10th of T120min demonstrated a significant good correlation with the LF stage (|r| = 0.543-0.866, all P < 0.05). The 75th of T1native, entropy10min, and entropy20min were the three most reliable imaging markers in reflecting the stage of LF. The area under the ROC curve of entropy20min was larger than that of entropy10min (P < 0.05 for LF ≥ F2, ≥F3, and ≥ F4) and the 75th of T1native (P < 0.05 for LF ≥ F2 and ≥ F3) for staging LF. CONCLUSION Magnetic resonance histogram analysis of T1 maps, particularly the entropy derived from 20-min HBP T1 mapping, is promising for predicting the LF stage.
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Affiliation(s)
- Qing Wang
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China.
| | - HaiFeng Liu
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China
| | - ZuHui Zhu
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China
| | - Ye Sheng
- Department of Interventional Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou, Jiangsu 213200, China
| | - YaNan Du
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China
| | - YuFeng Li
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China
| | - JianHong Liu
- Department of Pathology, The Third People's Hospital of Changzhou, Changzhou, Jiangsu 213200, China
| | | | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou & Changzhou First People's Hospital, Jiangsu 213200, China.
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14
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Chen YJ, Wang X, Zhang HY, Du YN, Jin XJ, Zhang ZF. Inverse association between bone mineral density and fibrinogen in menopausal women. Climacteric 2020; 24:146-150. [PMID: 32602367 DOI: 10.1080/13697137.2020.1776249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Inflammatory diseases are risk factors for osteoporosis. We aimed to explore whether fibrinogen, which is linked to chronic inflammation, is associated with bone mineral density (BMD) in menopausal women. METHODS In this cross-sectional study, we analyzed 339 menopausal women from Zhejiang Province between January 2016 and October 2019. Linear regression analysis was performed to assess the relationship between fibrinogen and BMD. RESULTS Significant inverse association was observed between the serum fibrinogen level and BMD in menopausal women. The mean BMD in each quartile of fibrinogen level was 0.901, 0.897, 0.892, and 0.855 g/cm2, respectively (p = 0.027). After adjusting for age, body mass index, metabolic profiles, blood inflammatory factors, and serum levels of estradiol, calcium, phosphorus, and alkaline phosphatase, fibrinogen levels remained significantly associated with BMD (regression coefficients for quartiles 1-3 vs. quartile 4 were 0.046, 0.027, and 0.036, respectively; p for trend <0.05). CONCLUSIONS Higher fibrinogen levels were associated with lower BMD in menopausal women, which was independent of age, body mass index, estradiol, and other factors. Therefore, serum fibrinogen can be used as a new predictor of reduced BMD in menopausal women.
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Affiliation(s)
- Y J Chen
- Department of fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - X Wang
- Nanjing Medical University, Nanjing, China
| | - H Y Zhang
- Department of Obstetrics and Gynecology, Hangzhou Women's Hospital, Hangzhou, China
| | - Y N Du
- Nanjing Medical University, Nanjing, China
| | - X J Jin
- Department of Obstetrics and Gynecology, Hangzhou Women's Hospital, Hangzhou, China
| | - Z F Zhang
- Department of fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China.,Nanjing Medical University, Nanjing, China.,Department of Obstetrics and Gynecology, Hangzhou Women's Hospital, Hangzhou, China
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15
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Liu M, Xu HL, Yuan M, Liu ZR, Wu XY, Zhang Y, Ma LY, Gong L, Gan H, Liu WW, Tao SM, Zong Q, Du YN, Tao FB. [Analysis on epidemic situation and spatiotemporal changes of COVID-19 in Anhui]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:630-633. [PMID: 32107910 DOI: 10.3760/cma.j.cn112150-20200221-00150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We used the epidemic data of COVID-19 published on the official website of the municipal health commissions in Anhui province to map the spatiotemporal changes of confirmed cases, fit the epidemic situation by the population growth curve at different stages and analyze the epidemic situation in Anhui Province. It was found that the cumulative incidence of COVID-19 was 156/100 000 by February 18, 2020 and the trend of COVID-19 epidemic declined after February 7 with a change from J-shaped curve to S-shaped curve. As the reporting time of cases might be 3-5 days later than the actual onset time, the number of new cases in Anhui province actually began to decline around February 2 to February 4, 2020.
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Affiliation(s)
- M Liu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - H L Xu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - M Yuan
- Center for Big Data Science in Health, School of Health Service Management, Anhui Medical University, Hefei 230032, China
| | - Z R Liu
- Anhui Provincial Center for Disease Control and Prevention, Hefei 230601, China
| | - X Y Wu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - Y Zhang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - L Y Ma
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - L Gong
- Department of Health Emergecy Management and Acute Infectious Disease Prevention, Anhui Provincial Center for Disease Control and Prevention, Hefei 230601, China
| | - H Gan
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - W W Liu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - S M Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - Q Zong
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
| | - Y N Du
- Center for Big Data Science in Health, School of Health Service Management, Anhui Medical University, Hefei 230032, China
| | - F B Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University/Population Health Across Life Cycle,Ministry of Education of the People's Republic of China/National Health Commission Key Laboratory of Study on Abnormal Gametes and Reproductive Tract,Hefei 230032, China
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16
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Liu HF, Wang Q, Du YN, Zhu ZH, Li YF, Zou LQ, Xing W. Dynamic contrast-enhanced MRI with Gd-EOB-DTPA for the quantitative assessment of early-stage liver fibrosis induced by carbon tetrachloride in rabbits. Magn Reson Imaging 2020; 70:57-63. [PMID: 32325235 DOI: 10.1016/j.mri.2020.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/31/2020] [Accepted: 04/15/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE To explore quantitative parameters obtained by dynamic contrast-enhanced magnetic resonance imaging (DCE MRI) with Gd-EOB-DTPA in discriminating early-stage liver fibrosis (LF) in a rabbit model. MATERIALS AND METHODS LF was established in 60 rabbits by the injection of 50% CCl4 oil solution, whereas 30 rabbits served as the control group. All rabbits underwent pathological examination to determine the LF stage using the METAVIR classification system. DCE MRI was performed, and quantitative parameters, including Ktrans, Kep, Ve, Vp and Re were measured and evaluated among the different LF stages using spearman correlation coefficients and receiver operating characteristic curve. RESULTS In all, 24, 25, and 22 rabbits had stage F0, stage F1, and stage F2 LF, respectively. Ktrans (r = 0.803) increased, and Kep (r = -0.495) and Re (r = -0.701) decreased with LF stage progression (P < 0.001), while no significant correlation was found for Ve or Vp. Ktrans and Re were significantly different between all LF stage pairs compared (F0 vs. F1, F0 vs. F2, F1 vs. F2, F0 vs. F1-F2, P < 0.05). With the exception of F0 vs. F1, Kep differed significantly between stages (P < 0.05). The AUC of Ktrans was higher than that of other quantitative parameters, with an AUC of 0.92, 0.99, 0.94 and 0.92 for staging F0 vs. F1, F0 vs. F2, F1 vs. F2, and F0 vs. F1-F2, respectively. CONCLUSION Among quantitative parameters of Gd-EOB-DTPA DCE MRI, Ktrans was the best predictor for quantitatively differentiating early-stage LF.
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Affiliation(s)
- Hai-Feng Liu
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
| | - Qing Wang
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
| | - Ya-Nan Du
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
| | - Zu-Hui Zhu
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
| | - Yu-Feng Li
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
| | - Li-Qiu Zou
- Department of Radiology, The Sixth Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen 518052, China.
| | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow University & Changzhou First People's Hospital, Changzhou 213003, Jiangsu, China
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17
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An WK, Zheng SJ, Du YN, Ding SY, Li ZJ, Jiang S, Qin Y, Liu X, Wei PF, Cao ZQ, Song M, Pan Z. Thiophene-embedded conjugated microporous polymers for photocatalysis. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01164a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
“Bottom-up” embedding of thiophene derivatives into CMPs for highly efficient heterogeneous photocatalysis is reported.
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18
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Wei J, Xu L, Du YN, Tang XF, Ye MQ, Wu YJ, Han WQ, Gao PJ. Membrane raft redox signalling contributes to endothelial dysfunction and vascular remodelling of thoracic aorta in angiotensin II-infused rats. Exp Physiol 2019; 104:946-956. [PMID: 30924217 DOI: 10.1113/ep087335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 03/12/2019] [Indexed: 12/21/2022]
Abstract
NEW FINDINGS What is the central question of this study? Is the membrane raft redox signalling pathway involved in blood pressure increase, endothelial dysfunction and vascular remodelling in an angiotensin II-induced hypertensive animal model? What is the main finding and its importance? The membrane raft redox signalling pathway was involved in endothelial dysfunction and medial remodelling in angiotensin II-induced hypertension. ABSTRACT The membrane raft (MR) redox pathway is characterized by NADPH oxidase activation via the clustering of its subunits through lysosome fusion and the activation of acid sphingomyelinase (ASMase). Our previous study shows that the MR redox signalling pathway is associated with angiontensin II (AngII)-induced production of reactive oxygen species (ROS) and endothelial dysfunction in rat mesenteric arteries. In the present study, we hypothesized that this signalling pathway is involved in blood pressure increase, endothelial dysfunction and vascular remodelling in an AngII-induced hypertensive animal model. Sixteen-week-old male Sprague-Dawley rats were subjected to AngII infusion for 2 weeks with or without treatment with the lysosome fusion inhibitor bafilomycin A1 and ASMase inhibitor amitriptyline. After treatments, aortas were harvested for further study. The results showed that the MR redox signalling pathway was activated as indicated by the increase of MR formation, ASMase activity and ROS production in aorta from AngII-infused rats compared with that from control rats. MR formation and ROS production were significantly inhibited in thoracic aorta from AngII-induced rats treated with bafilomycin A1 and amitriptyline. Both treatments significantly attenuated blood pressure increase, endothelial dysfunction and vascular remodelling including medial hypertrophy, and increased collagen and fibronectin deposition in thoracic aortas from AngII-infused rats. Finally, both treatments significantly prevented the increase of inflammatory factors including monocyte chemotactic protein 1, intercellular adhesion molecule 1 and tumour necrosis factor α in thoracic aorta from AngII-infused rats. In conclusion, the present study demonstrates that the MR redox signalling pathway was involved in endothelial dysfunction and medial remodelling in AngII-induced hypertension.
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Affiliation(s)
- Jian Wei
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Lian Xu
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Ya-Nan Du
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Xiao-Feng Tang
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Mao-Qing Ye
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Yong-Jie Wu
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Wei-Qing Han
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China.,Laboratory of Vascular Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Ping-Jin Gao
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China.,Laboratory of Vascular Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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19
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Du YN, Xing W, Yu SN, Ding JL, Chen L, Tian XJ. [Feasibility study of blood oxygen level-dependent magnetic resonance imaging in evaluating the response of metastatic lymph nodes of rabbit VX2 tumor to radiotherapy]. Zhonghua Yi Xue Za Zhi 2019; 99:1028-1033. [PMID: 30955318 DOI: 10.3760/cma.j.issn.0376-2491.2019.13.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the feasibility of blood oxygen level-dependent magnetic resonance imaging (MRI) in evaluating the response of metastatic lymph nodes of rabbit VX2 tumor to radiotherapy. Methods: Twenty-eight healthy New Zealand white rabbits which were provided by the Laboratory Animal Center of Soochow University, male or female, 2 to 3 months, weighing 2 to 3 kg, were used to establish the animal model of VX2 tumor popliteal fossa metastatic lymph node, and then were divided into either the radiotherapy group (n=16) or the control group (n=12). The radiotherapy group received a 20 Gy radiotherapy per rabbit, the control group received sham radiotherapy. All rabbits underwent MRI scan on four time points, including before (0 day), 3rd, 7th and 14th days after radiotherapy. The two parameters of size and R(2*) value (s(-1)) of lymph node were measured. At each time point,two rabbits in each group were sacrificed randomly to resect lymph nodes for pathological examination, and two parameters of microvessel density (MVD, strip/HP) and apoptosis index (AI, %) were analyzed. The parameters among the four time points in each group or between the two groups were compared. The correlation of lymph node size and R(2*) value with MVD or AI was analyzed, respectively. Results: A significant size difference was neither between the two groups or among the each time points in each group (P>0.05). The R(2*) of lymph node in the radiotherapy group was (29.6±1.7),(36.8±2.6),(44.8±5.8) and (57.7±6.2) s(-1) at the time points of 0, 3, 7 and 14 days, respectively, showing a gradual increase trend; MVD was (52.3±2.5),(41.0±3.6),(34.0±3.6) and (22.7±2.5) strip/HP respectively, showing a decreasing trend; AI was 12.8%±0.5%,14.9%±0.6%,20.6%±0.5% and 27.5%±0.7% respectively, showing a gradual increase trend (all P<0.05). In the control group, both R(2*) value and AI among the four time points did not change statistically (all P>0.05), but MVD showed a gradual increase trend,(50.0±3.0),(53.0±1.7),(60.3±2.5) and (70.0±2.0) strip/HP, respectively, P<0.05. There were significant differences in R(2*) and MVD at 3, 7 and 14 days, in AI at 7 and 14 days between the two groups (all P<0.05). There was a linear correlation of R(2*) value, but not of size, with MVD and AI (r=-0.87 and 0.94, respectively). Conclusion: Blood oxygen level-dependent MRI can indirectly reflect the hypoxic status of metastatic lymph nodes after radiotherapy, and has potential value in evaluating the response of metastatic lymph nodes to radiotherapy.
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Affiliation(s)
- Y N Du
- Department of Radiology, Third Affiliated Hospital of Soochow University, Changzhou 213003, China
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20
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Du YN, Tang XF, Xu L, Chen WD, Gao PJ, Han WQ. SGK1-FoxO1 Signaling Pathway Mediates Th17/Treg Imbalance and Target Organ Inflammation in Angiotensin II-Induced Hypertension. Front Physiol 2018; 9:1581. [PMID: 30524295 PMCID: PMC6262360 DOI: 10.3389/fphys.2018.01581] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 10/23/2018] [Indexed: 01/17/2023] Open
Abstract
It has been demonstrated that serum/glucocorticoid regulated kinase 1 (SGK1) and the downstream transcription factor forkhead box O1 (FoxO1) plays a critical role in the differentiation of T helper 17 cells/regulatory T cells (Th17/Treg). In the present study, we hypothesized that this SGK1-FoxO1 signaling pathway is involved in Th17/Treg imbalance and target organ damage in angiotensin II (AngII)-induced hypertensive mice. Results show that SGK1 inhibitor EMD638683 significantly reversed renal dysfunction and cardiac dysfunction in echocardiography as indicated by decreased blood urine nitrogen and serum creatinine in AngII-infused mice. Flow cytometric assay shows that there was significant Th17/Treg imbalance in spleen and in renal/cardiac infiltrating lymphocytes as indicated by the increased Th17 cells (CD4+-IL17A+ cells) and decreased Treg cells (CD4+-Foxp3+). Consistently, real-time PCR shows that Th17-related cytokines including IL-17A, IL-23, and tumor necrosis factor α (TNF-α) was increased and Treg-related cytokine IL-10 was decreased in renal and cardiac infiltrating lymphocytes in AngII-infused mice. Meanwhile, SGK1 protein level, as well as its phosphorylation and activity, was significantly increased in spleen in AngII-infused rats. Furthermore, it was found that splenic phosphorylated FoxO1 was significantly increased, whereas total FoxO1 in nuclear preparation was significantly decreased in AngII-infused mice, suggesting that increased FoxO1 phosphorylation initiate its translocation from cytoplasm to nucleus. Notably, all changes were significantly inhibited by the treatment of EMD638683. These results suggest that SGK1 was involved in Th17/Treg imbalance and target organ damage in AngII-induced hypertension.
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Affiliation(s)
- Ya-Nan Du
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Xiao-Feng Tang
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Lian Xu
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Laboratory of Vascular Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wen-Dong Chen
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China
| | - Ping-Jin Gao
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China.,Laboratory of Vascular Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Wei-Qing Han
- Shanghai Key Laboratory of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Institute of Hypertension, Shanghai, China.,Laboratory of Vascular Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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21
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Zhang ZB, Ruan CC, Lin JR, Xu L, Chen XH, Du YN, Fu MX, Kong LR, Zhu DL, Gao PJ. Perivascular Adipose Tissue-Derived PDGF-D Contributes to Aortic Aneurysm Formation During Obesity. Diabetes 2018; 67:1549-1560. [PMID: 29794241 DOI: 10.2337/db18-0098] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/11/2018] [Indexed: 11/13/2022]
Abstract
Obesity increases the risk of vascular diseases, including aortic aneurysm (AA). Perivascular adipose tissue (PVAT) surrounding arteries are altered during obesity. However, the underlying mechanism of adipose tissue, especially PVAT, in the pathogenesis of AA is still unclear. Here we showed that angiotensin II (AngII) infusion increases the incidence of AA in leptin-deficient obese mice (ob/ob) and high-fat diet-induced obese mice with adventitial inflammation. Furthermore, transcriptome analysis revealed that platelet-derived growth factor-D (PDGF-D) was highly expressed in the PVAT of ob/ob mice. Therefore, we hypothesized that PDGF-D mediates adventitial inflammation, which provides a direct link between PVAT dysfunction and AA formation in AngII-infused obese mice. We found that PDGF-D promotes the proliferation, migration, and inflammatory factors expression in cultured adventitial fibroblasts. In addition, the inhibition of PDGF-D function significantly reduced the incidence of AA in AngII-infused obese mice. More importantly, adipocyte-specific PDGF-D transgenic mice are more susceptible to AA formation after AngII infusion accompanied by exaggerated adventitial inflammatory and fibrotic responses. Collectively, our findings reveal a notable role of PDGF-D in the AA formation during obesity, and modulation of this cytokine might be an exploitable treatment strategy for the condition.
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MESH Headings
- Adventitia/drug effects
- Adventitia/immunology
- Adventitia/metabolism
- Adventitia/pathology
- Angiotensin II/administration & dosage
- Angiotensin II/adverse effects
- Animals
- Aorta, Abdominal/diagnostic imaging
- Aorta, Abdominal/drug effects
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/pathology
- Aortic Aneurysm, Abdominal/diagnostic imaging
- Aortic Aneurysm, Abdominal/etiology
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/pathology
- Benzimidazoles/pharmacology
- Cells, Cultured
- Diet, High-Fat/adverse effects
- Drug Implants
- Gene Expression Regulation/drug effects
- Inflammation Mediators/metabolism
- Intra-Abdominal Fat/drug effects
- Intra-Abdominal Fat/immunology
- Intra-Abdominal Fat/metabolism
- Intra-Abdominal Fat/pathology
- Lymphokines/agonists
- Lymphokines/antagonists & inhibitors
- Lymphokines/genetics
- Lymphokines/metabolism
- Male
- Mice
- Mice, Mutant Strains
- Mice, Transgenic
- Obesity/etiology
- Obesity/metabolism
- Obesity/pathology
- Obesity/physiopathology
- Organ Specificity
- Platelet-Derived Growth Factor/agonists
- Platelet-Derived Growth Factor/antagonists & inhibitors
- Platelet-Derived Growth Factor/genetics
- Platelet-Derived Growth Factor/metabolism
- Quinolines/pharmacology
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
- Subcutaneous Fat, Abdominal/drug effects
- Subcutaneous Fat, Abdominal/immunology
- Subcutaneous Fat, Abdominal/metabolism
- Subcutaneous Fat, Abdominal/pathology
- Survival Analysis
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Affiliation(s)
- Ze-Bei Zhang
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Cheng-Chao Ruan
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jing-Rong Lin
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Lian Xu
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiao-Hui Chen
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ya-Nan Du
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Meng-Xia Fu
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ling-Ran Kong
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ding-Liang Zhu
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Ping-Jin Gao
- The State Key Laboratory of Medical Genomics, Shanghai Key Laboratory of Hypertension, Department of Hypertension, Ruijin Hospital and Shanghai Institute of Hypertension, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Liu ZG, Di DD, Wang M, Liu RH, Zhao HY, Piao DR, Zhao ZZ, Hao YQ, Du YN, Jiang H, Cui BY, Xia XZ. In vitro antimicrobial susceptibility testing of human Brucella melitensis isolates from Ulanqab of Inner Mongolia, China. BMC Infect Dis 2018; 18:43. [PMID: 29338693 PMCID: PMC5771123 DOI: 10.1186/s12879-018-2947-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 01/04/2018] [Indexed: 11/10/2022] Open
Abstract
Background Brucellosis is an endemic disease in the Inner Mongolia Autonomous Region of China and Ulanqab exhibits the highest prevalence of brucellosis in this region. Due to the complex nature of Brucellosis, a cure for this disease has proven to be elusive. Furthermore, the reduced susceptibility of Brucella spp. to antimicrobial agents has been reported as a potential cause of therapeutic failure. However, detailed in vitro antimicrobial susceptibility patterns pertaining to Brucella isolates from this region have not yet been published. The aim of this study was to evaluate the antibiotic susceptibility profile of Brucella melitensis clinical isolates from Ulanqab, Inner Mongolia, China. Methods A total of 85 B. melitesis isolates were obtained from humans in Ulanqab of Inner Mongolia, China; the antimicrobial susceptibility of 85 clinical isolates to nine antibiotics was assessed using the E-test method according to the CLSI (Clinical and Laboratory Standards Institute) guidelines. Results All of the tested isolates were susceptible to minocycline, sparfloxacin, doxycycline, tetracycline, ciprofloxacin, gentamicin and levofloxacin. Resistance to rifampin and cotrimoxazole was observed in 1.0% (1/85) and 7.0% (6/85) of the isolates, respectively. However, rpoB gene mutations were not observed in single isolates exhibiting resistance to rifampin. Conclusions We observed that B. melitensis isolates are susceptible to the majority of the tested antibiotics. Furthermore, minocycline and sparfloxacin exhibited extremely high bactericidal effects in relation to the B. melitensis isolates. The sensitivity of commonly used drugs for the treatment of brucellosis should be regularly monitored. To the best of our knowledge, this is the first report of rifampin and cotrimoxazole resistant isolates of B. melitensis in China. In summary, based on the findings from this study, we suggest that antibiotic administration and use should be rationalized to prevent future drug resistance.
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Affiliation(s)
- Zhi-Guo Liu
- College of Veterinary Medical Inner Mongolia Agriculture University, Hohhot, 010018, China.,Ulanqab Centre for Endemic Disease Prevention and Control, Health and Family Planning Commission of Ulanqab, Ulanqab west Road, Jining, 012000 Inner, Mongolia.,State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Dong-Dong Di
- Laboratory of Zoonoses, China Animal Health and Epidemiology Center, MOA, Qingdao, China
| | - Miao Wang
- Ulanqab Centre for Endemic Disease Prevention and Control, Health and Family Planning Commission of Ulanqab, Ulanqab west Road, Jining, 012000 Inner, Mongolia
| | - Ri-Hong Liu
- Ulanqab Centre for Endemic Disease Prevention and Control, Health and Family Planning Commission of Ulanqab, Ulanqab west Road, Jining, 012000 Inner, Mongolia
| | - Hong-Yan Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Dong-Ri Piao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Zhong-Zhi Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China
| | - Yong-Qing Hao
- College of Veterinary Medical Inner Mongolia Agriculture University, Hohhot, 010018, China
| | - Ya-Nan Du
- College of Veterinary Medical Inner Mongolia Agriculture University, Hohhot, 010018, China
| | - Hai Jiang
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China.
| | - Bu-Yun Cui
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention/Collaborative Innovation Center for Diagnosis and Treatment of Infectious Disease, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping, Beijing, 102206, People's Republic of China.
| | - Xian-Zhu Xia
- College of Veterinary Medical Inner Mongolia Agriculture University, Hohhot, 010018, China. .,Institute of Military Veterinary AMMS, Changchun, 130062, China.
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Zhang JG, Xing ZY, Zha TT, Tian XJ, Du YN, Chen J, Xing W. Longitudinal assessment of rabbit renal fibrosis induced by unilateral ureteral obstruction using two-dimensional susceptibility weighted imaging. J Magn Reson Imaging 2017; 47:1572-1577. [PMID: 29236342 DOI: 10.1002/jmri.25915] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Previous studies indicated that two-dimensional-susceptibility weighted imaging (2D-SWI) could serve as a useful biomarker for differentiating the grade of liver fibrosis. PURPOSE To evaluate the feasibility of 2D-SWI in the dynamic quantification of renal fibrosis in a rabbit model. STUDY TYPE Longitudinal study. ANIMAL MODEL Twenty-Four New Zealand White Rabbits including control group (n = 4); and renal fibrosis group (n = 20), by means of a unilateral ureteral obstruction (UUO) model. FIELD STRENGTH/SEQUENCE The 3.0 T SWI using a 2D gradient-echo sequence. ASSESSMENT The relative SWI signal ratio(r) of cortical and medulla (r = SIrenal /SImuscle ) was longitudinally assessed before ligation and on weeks 2, 4, 6, and 8 following ligation. Sirius Red staining was used to assess the degree of fibrosis in five high-power fields. STATISTICAL TESTS The repeated measures of analysis of variance and linear regression analysis. RESULTS Both the cortical and medullary r values were significantly higher in the UUO kidneys at week 2 compared with the kidneys before ligation. Over the course of UUO progression, significant changes occurred in the cortical and medullary r values in vivo and fibrosis scores in vitro (all P values < 0.05). The r values gradually decreased, while the fibrosis scores gradually increased over 8 weeks following ligation. The linear regression analysis showed a strong and significant correlation between cortical and medullary r values and the pathologic fibrosis scores (R2 = 0.91, 0.81, respectively). DATA CONCLUSION The SWI sequence could provide a quantitative evaluation of renal fibrosis during UUO progression. LEVEL OF EVIDENCE 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;47:1572-1577.
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Affiliation(s)
- Jing-Gang Zhang
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhao-Yu Xing
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ting-Ting Zha
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiao-Juan Tian
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ya-Nan Du
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Jie Chen
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Wei Xing
- Department of Radiology, The Third Affiliated Hospital of Soochow University, Changzhou, China
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24
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Chen M, Pang B, Du YN, Zhang YP, Liu W. Characterization of the metallo-dependent amidohydrolases responsible for "auxiliary" leucinyl removal in the biosynthesis of 2,2'-bipyridine antibiotics. Synth Syst Biotechnol 2017; 2:137-146. [PMID: 29062971 PMCID: PMC5636949 DOI: 10.1016/j.synbio.2017.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 07/05/2017] [Accepted: 07/05/2017] [Indexed: 01/11/2023] Open
Abstract
2,2'-Bipyridine (2,2'-BiPy) is an attractive core structure present in a number of biologically active natural products, including the structurally related antibiotics caerulomycins (CAEs) and collismycins (COLs). Their biosynthetic pathways share a similar key 2,2'-BiPy-l-leucine intermediate, which is desulfurated or sulfurated at C5, arises from a polyketide synthase/nonribosomal peptide synthetase hybrid assembly line. Focusing on the common off-line modification steps, we here report that the removal of the "auxiliary" l-leucine residue relies on the metallo-dependent amidohydrolase activity of CaeD or ColD. This activity leads to the production of similar 2,2'-BiPy carboxylate products that then receive an oxime functionality that is characteristic for both CAEs and COLs. Unlike many metallo-dependent amidohydrolase superfamily proteins that have been previously reported, these proteins (particularly CaeD) exhibited a strong zinc ion-binding capacity that was proven by site-specific mutagenesis studies to be essential to proteolytic activity. The kinetics of the conversions that respectively involve CaeD and ColD were analyzed, showing the differences in the efficiency and substrate specificity of these two proteins. These findings would generate interest in the metallo-dependent amidohydrolase superfamily proteins that are involved in the biosynthesis of bioactive natural products.
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Affiliation(s)
- Ming Chen
- State Key Laboratory of Bioorganic and Nature Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Bo Pang
- State Key Laboratory of Bioorganic and Nature Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ya-Nan Du
- State Key Laboratory of Bioorganic and Nature Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yi-Peng Zhang
- State Key Laboratory of Bioorganic and Nature Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wen Liu
- State Key Laboratory of Bioorganic and Nature Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.,Huzhou Center of Bio-Synthetic Innovation, 1366 Hongfeng Road, Huzhou 313000, China
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Zhen G, Zhang L, Du Y, Yu R, Liu X, Cao F, Chang Q, Deng X, Xia M, He H. De novo assembly and comparative analysis of root transcriptomes from different varieties of Panax ginseng C. A. Meyer grown in different environments. Sci China Life Sci 2015; 58:1099-110. [PMID: 26563176 DOI: 10.1007/s11427-015-4961-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 06/16/2013] [Indexed: 12/22/2022]
Abstract
Panax ginseng C. A. Meyer is an important traditional herb in eastern Asia. It contains ginsenosides, which are primary bioactive compounds with medicinal properties. Although ginseng has been cultivated since at least the Ming dynasty to increase production, cultivated ginseng has lower quantities of ginsenosides and lower disease resistance than ginseng grown under natural conditions. We extracted root RNA from six varieties of fifth-year P. ginseng cultivars representing four different growth conditions, and performed Illumina paired-end sequencing. In total, 163,165,706 raw reads were obtained and used to generate a de novo transcriptome that consisted of 151,763 contigs (76,336 unigenes), of which 100,648 contigs (66.3%) were successfully annotated. Differential expression analysis revealed that most differentially expressed genes (DEGs) were upregulated (246 out of 258, 95.3%) in ginseng grown under natural conditions compared with that grown under artificial conditions. These DEGs were enriched in gene ontology (GO) terms including response to stimuli and localization. In particular, some key ginsenoside biosynthesis-related genes, including HMG-CoA synthase (HMGS), mevalonate kinase (MVK), and squalene epoxidase (SE), were upregulated in wild-grown ginseng. Moreover, a high proportion of disease resistance-related genes were upregulated in wild-grown ginseng. This study is the first transcriptome analysis to compare wild-grown and cultivated ginseng, and identifies genes that may produce higher ginsenoside content and better disease resistance in the wild; these genes may have the potential to improve cultivated ginseng grown in artificial environments.
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Affiliation(s)
- Gang Zhen
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, 100871, China
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - Lei Zhang
- Frontier Laboratories of Systems Crop Design Co., Ltd., Beijing, 100085, China
| | - YaNan Du
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, 100871, China
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - RenBo Yu
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, 100871, China
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China
| | - XinMin Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - FangRui Cao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Qi Chang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - XingWang Deng
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, 100871, China.
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China.
| | - Mian Xia
- Frontier Laboratories of Systems Crop Design Co., Ltd., Beijing, 100085, China.
| | - Hang He
- State Key Laboratory of Protein and Plant Gene Research, College of Life Sciences, Peking University, Beijing, 100871, China.
- School of Advanced Agricultural Sciences, Peking University, Beijing, 100871, China.
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Wei SJ, Du YN, Ni GR, Zhang HW, Tu GQ, Pan XH. [Inhibition effect of Ag-antibiotic 702 on plant pathogenic fungi and related mechanisms]. Ying Yong Sheng Tai Xue Bao 2012; 23:3435-3440. [PMID: 23479888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
To explore the practical application value and action mechanisms of Ag-antibiotic 702 against pathogenic fungi, the inhibition spectrum of Ag-antibiotic 702 was studied by measuring the mycelium growth rate of pathogenic fungi, and the effects of Ag-antibiotic 702 on the membrane permeability of Rhizoctonia solani, a typical pathogenic fungus, were investigated, with the variations of mycelium electrolyte leakage and protein, nucleic acid, and Mg2+ and K+ contents under the action of Ag-antibiotic 702 determined, and the effects of Ag-antibiotic 702 on the cell membrane ergosterol biosynthesis and ultramicrostructure observed. The results showed that the active products of Ag-antibiotic 702 had stronger inhibition effect on 13 test pathogens, among which, Sclerotinia sclerotiorum was most sensitive, with the EC50 being 0.23 microg x mL(-1). As compared with the control, the relative electric conductivity of R. solani treated with Ag-antibiotic 702 was increased by 72.2%, the contents of protein, nucleic acid, and Mg2+ and K+ leaked from the R. solani cells were all increased, while the ergosterol content was decreased by 92.0%. The cell membrane outline was not clear, organelles were badly damaged, and vacuole appeared. It was suggested that the inhibition of ergosterol biosynthesis and the increase of membrane permeability could be the main action mechanisms of Ag-antibiotic 702 against pathogenic fungi.
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Affiliation(s)
- Sai-Jin Wei
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang 330045, China.
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Mao J, Li J, Chen D, Zhang J, Du YN, Wang YJ, Li X, Wang R, Chen LY, Wang XM. MRI-DWI improves the early diagnosis of brain abscess induced by Candida albicans in preterm infants. Transl Pediatr 2012; 1:76-84. [PMID: 26835268 PMCID: PMC4728877 DOI: 10.3978/j.issn.2224-4336.2012.02.04] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To investigate the diagnostic value of magnetic resonance imaging (MRI) in brain abscess induced by invasive fungal infection (IFI) of the central nervous system. METHODS The clinical data of eight preterm infants with IFI of the central nervous system were retrospectively analyzed. All these eight children received three sequential brain MRI modes T1WI, T2WI and DWI during hospitalization and after discharge. RESULTS All these eight preterm infants were infected with Candida albicans, seven of which were manifested by brain abscess and four were accompanied by meningitis. MRI of seven infants with brain abscess indicated extensive invasion including involvement of subcortical white matter, deep periventricular white matter and semiovale center white matter. MRI examination was conducted within 11 d following infection on four cases and showed diffuse or multiple miliary nodules, hyper-intense signal on DWI, while insignificant signal changes on T1WI and T2WI. DWI signal nearly disappeared three weeks later. T1WI/T2WI signal changed most significantly 2-4 weeks following infection, with nodules ring-shaped, hyper-intense signal around T1WI and hypo-intense signal in the center. Signal on T2WI was just on the opposite. Severe cases presented fusion of different degrees. Significant enhanced effect was observed on T1WI. Four weeks later, the lesion gradually became fewer and smaller on T1WI, transferred into dot or line-like hyper-intense signal and presented obviously hypo-intense signal on T2WI. Dynamic MRI of two cases showed delayed myelination and corpus callosum thinning. CONCLUSION MRI-DWI and dynamic MRI changes can improve the early diagnosis of brain abscess induced by Candida albicans in preterm infants.
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Affiliation(s)
- Jian Mao
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Juan Li
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Dan Chen
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Jing Zhang
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Ya-Nan Du
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Ying-Jie Wang
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Xin Li
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Rui Wang
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Li-Ying Chen
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - Xiao-Ming Wang
- 1 Department of Pediatrics, Shengjing Hospital, China Medical University, Shenyang 110004, China ; 2 Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China
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