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Al Tabosh T, Liu H, Koça D, Al Tarrass M, Tu L, Giraud S, Delagrange L, Beaudoin M, Rivière S, Grobost V, Rondeau-Lutz M, Dupuis O, Ricard N, Tillet E, Machillot P, Salomon A, Picart C, Battail C, Dupuis-Girod S, Guignabert C, Desroches-Castan A, Bailly S. Impact of heterozygous ALK1 mutations on the transcriptomic response to BMP9 and BMP10 in endothelial cells from hereditary hemorrhagic telangiectasia and pulmonary arterial hypertension donors. Angiogenesis 2024; 27:211-227. [PMID: 38294582 PMCID: PMC11021321 DOI: 10.1007/s10456-023-09902-8] [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: 10/04/2023] [Accepted: 12/03/2023] [Indexed: 02/01/2024]
Abstract
Heterozygous activin receptor-like kinase 1 (ALK1) mutations are associated with two vascular diseases: hereditary hemorrhagic telangiectasia (HHT) and more rarely pulmonary arterial hypertension (PAH). Here, we aimed to understand the impact of ALK1 mutations on BMP9 and BMP10 transcriptomic responses in endothelial cells. Endothelial colony-forming cells (ECFCs) and microvascular endothelial cells (HMVECs) carrying loss of function ALK1 mutations were isolated from newborn HHT and adult PAH donors, respectively. RNA-sequencing was performed on each type of cells compared to controls following an 18 h stimulation with BMP9 or BMP10. In control ECFCs, BMP9 and BMP10 stimulations induced similar transcriptomic responses with around 800 differentially expressed genes (DEGs). ALK1-mutated ECFCs unexpectedly revealed highly similar transcriptomic profiles to controls, both at the baseline and upon stimulation, and normal activation of Smad1/5 that could not be explained by a compensation in cell-surface ALK1 level. Conversely, PAH HMVECs revealed strong transcriptional dysregulations compared to controls with > 1200 DEGs at the baseline. Consequently, because our study involved two variables, ALK1 genotype and BMP stimulation, we performed two-factor differential expression analysis and identified 44 BMP9-dysregulated genes in mutated HMVECs, but none in ECFCs. Yet, the impaired regulation of at least one hit, namely lunatic fringe (LFNG), was validated by RT-qPCR in three different ALK1-mutated endothelial models. In conclusion, ALK1 heterozygosity only modified the BMP9/BMP10 regulation of few genes, including LFNG involved in NOTCH signaling. Future studies will uncover whether dysregulations in such hits are enough to promote HHT/PAH pathogenesis, making them potential therapeutic targets, or if second hits are necessary.
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Affiliation(s)
- T Al Tabosh
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - H Liu
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - D Koça
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - M Al Tarrass
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - L Tu
- Faculté de Médecine, Pulmonary Hypertension: Pathophysiology and Novel Therapies, Université Paris-Saclay, 94276, Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 «Pulmonary Hypertension: Pathophysiology and Novel Therapies», Hôpital Marie Lannelongue, 92350, Le Plessis-Robinson, France
| | - S Giraud
- Genetics Department, Femme-Mère-Enfants Hospital, Hospices Civils de Lyon, 69677, Bron, France
| | - L Delagrange
- Genetics Department, Femme-Mère-Enfants Hospital, Hospices Civils de Lyon, 69677, Bron, France
- National Reference Center for HHT, 69677, Bron, France
| | - M Beaudoin
- Genetics Department, Femme-Mère-Enfants Hospital, Hospices Civils de Lyon, 69677, Bron, France
- National Reference Center for HHT, 69677, Bron, France
| | - S Rivière
- Internal Medicine Department, CHU of Montpellier, St Eloi Hospital and Center of Clinical Investigation, INSERM, CIC 1411, 34295, Montpellier Cedex 7, France
| | - V Grobost
- Internal Medicine Department, CHU Estaing, 63100, Clermont-Ferrand, France
| | - M Rondeau-Lutz
- Internal Medicine Department, University Hospital of Strasbourg, 67091, Strasbourg Cedex, France
| | - O Dupuis
- Hôpital Lyon SUD, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, 69100, Villeurbanne, France
- Faculty of Medicine, Lyon University, 69921, Lyon, France
| | - N Ricard
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - E Tillet
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - P Machillot
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - A Salomon
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - C Picart
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - C Battail
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - S Dupuis-Girod
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
- Genetics Department, Femme-Mère-Enfants Hospital, Hospices Civils de Lyon, 69677, Bron, France
- National Reference Center for HHT, 69677, Bron, France
| | - C Guignabert
- Faculté de Médecine, Pulmonary Hypertension: Pathophysiology and Novel Therapies, Université Paris-Saclay, 94276, Le Kremlin-Bicêtre, France
- INSERM UMR_S 999 «Pulmonary Hypertension: Pathophysiology and Novel Therapies», Hôpital Marie Lannelongue, 92350, Le Plessis-Robinson, France
| | - A Desroches-Castan
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France
| | - S Bailly
- Biosanté unit U1292, Grenoble Alpes University, INSERM, CEA, 38000, Grenoble, France.
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Guo H, Tian Y, Wu X, Tu L, Liu J, Zheng Y, Huang R. Efficient assembly and anti-tumor evaluation of novel polycyclic [1,2-a]-fused indoles. Bioorg Chem 2024; 146:107289. [PMID: 38493636 DOI: 10.1016/j.bioorg.2024.107289] [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: 12/03/2023] [Revised: 02/21/2024] [Accepted: 03/13/2024] [Indexed: 03/19/2024]
Abstract
Structurally diverse cyclopenta[4,5]pyrrolo[1,2-a]indoles heterocycles were smoothly constructed in good to excellent yields (up to 99 %) with excellent diastereoselectivities (>19:1 dr) through a novel and facile strategy based on BF3-catalyzed Friedel-Crafts alkylation/Aldol/Dehydrative cyclization cascade reaction. The anti-proliferative activity of these newly synthesized polycyclic indoles was screened, and all the functionalized reductive derivatives exhibited favorable anti-tumor activity. Notably, compound 4ae displayed the remarkable inhibitory activity against MCF-7 and HeLa cells with IC50 values of 4.62 μM and 7.71 μM, respectively. Mechanistically, the representative compound 4ae could effectively induce apoptosis of MCF-7 cells in crediting to up-regulate the relative expression of apoptotic protein BAX/Bcl-2, subsequently activate Pro-caspase 9 and cleave PARP, simultaneously block the cell cycle through down- and up-regulate the expression of cyclin B1 and p53, respectively. Moreover, compound 4ae also exhibited promising antineoplastic efficacy in subcutaneous MCF-7 xenograft mice which manifest significant shrunken tumors conspicuous nuclear apoptotic signal and minimal systemic toxicity. This strategy not only established a novel and efficient method for the assembly of structurally complex indole heterocycles, but also provided a series of compounds possessing attractive anti-cancer activity, which holds immense potential for future biomedical applications.
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Affiliation(s)
- Hui Guo
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Yuqi Tian
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Xing Wu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Liang Tu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Jikai Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
| | - Yongsheng Zheng
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
| | - Rong Huang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
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Huang M, Tu L, Li J, Yue X, Wu L, Yang M, Chen Y, Han P, Li X, Zhu L. Differentiation of Crohn's disease, ulcerative colitis, and intestinal tuberculosis by dual-layer spectral detector CT enterography. Clin Radiol 2024; 79:e482-e489. [PMID: 38143229 DOI: 10.1016/j.crad.2023.12.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/26/2023]
Abstract
AIM To investigate the value of radiological features and energy spectrum quantitative parameters in the differential diagnosis of Crohn's disease (CD), ulcerative colitis (UC), and intestinal tuberculosis (ITB) by dual-layer spectral detector computed tomography (CT) enterography (CTE). MATERIALS AND METHODS Clinical and CTE data were collected from 182 patients with CD, 29 with UC, and 51 with ITB. CT images were obtained at the enteric phases and portal phases. The quantitative energy spectrum parameters were iodine density (ID), normalised ID (NID), virtual non-contrast (VNC) value, and effective atomic number (Z-eff). The area under curve (AUC) of the receiver operating characteristic curve (ROC) was calculated. RESULTS The vascular comb sign (p=0.009) and enlarged lymph nodes (p=0.001) were more common in patients with CD than UC or ITB. In the differentiation of moderate-severe active CD from UC, enteric phase NID (AUC, 0.938; p<0.001) and portal phase Z-eff (AUC, 0.925; p<0.001) had the highest accuracy, which were compared separately. In the differentiation of moderate-severe active CD from ITB, enteric phase NID (AUC, 0.906; p<0.001) and portal phase Z-eff (AUC, 0.947; p<0.001) had the highest accuracy; however, the AUC value was highest when the four parameters are combined (AUC, 0.989; p<0.001; AUC, 0.986; p<0.001; AUC, 0.936; p<0.001; and AUC, 0.986; p<0.001). CONCLUSION The present study shows that the combined strategies of four parameters have higher sensitivity and specificity in differentiating CD, UC, and ITB, and may play a key role in guiding treatment.
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Affiliation(s)
- M Huang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - L Tu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - X Yue
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - L Wu
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - M Yang
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Y Chen
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - P Han
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - X Li
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China.
| | - L Zhu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Lu X, Liu P, Tu L, Guo X, Wang A, Zhu Y, Jiang Y, Zhang C, Xu Y, Chen Z, Wu X. Joint-GWAS, Linkage Mapping, and Transcriptome Analysis to Reveal the Genetic Basis of Plant Architecture-Related Traits in Maize. Int J Mol Sci 2024; 25:2694. [PMID: 38473942 DOI: 10.3390/ijms25052694] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/04/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
Plant architecture is one of the key factors affecting maize yield formation and can be divided into secondary traits, such as plant height (PH), ear height (EH), and leaf number (LN). It is a viable approach for exploiting genetic resources to improve plant density. In this study, one natural panel of 226 inbred lines and 150 family lines derived from the offspring of T32 crossed with Qi319 were genotyped by using the MaizeSNP50 chip and the genotyping by sequence (GBS) method and phenotyped under three different environments. Based on the results, a genome-wide association study (GWAS) and linkage mapping were analyzed by using the MLM and ICIM models, respectively. The results showed that 120 QTNs (quantitative trait nucleotides) and 32 QTL (quantitative trait loci) related to plant architecture were identified, including four QTL and 40 QTNs of PH, eight QTL and 41 QTNs of EH, and 20 QTL and 39 QTNs of LN. One dominant QTL, qLN7-2, was identified in the Zhangye environment. Six QTNs were commonly identified to be related to PH, EH, and LN in different environments. The candidate gene analysis revealed that Zm00001d021574 was involved in regulating plant architecture traits through the autophagy pathway, and Zm00001d044730 was predicted to interact with the male sterility-related gene ms26. These results provide abundant genetic resources for improving maize plant architecture traits by using approaches to biological breeding.
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Affiliation(s)
- Xuefeng Lu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
- Ministry of Agriculture and Rural Affairs Key Laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Region, Guiyang 550006, China
| | - Pengfei Liu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Liang Tu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Xiangyang Guo
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Angui Wang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yunfang Zhu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yulin Jiang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
- Ministry of Agriculture and Rural Affairs Key Laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Region, Guiyang 550006, China
| | - Chunlan Zhang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yan Xu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Zehui Chen
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Xun Wu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
- Ministry of Agriculture and Rural Affairs Key Laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Region, Guiyang 550006, China
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Tan T, Tu L, Yu Y, He M, Zhou X, Yang L. Mechanisms by which silencing long-stranded noncoding RNA KCNQ1OT1 alleviates myocardial ischemia/reperfusion injury (MI/RI)-induced cardiac injury via miR-377-3p/HMOX1. BMC Cardiovasc Disord 2024; 24:19. [PMID: 38172743 PMCID: PMC10765944 DOI: 10.1186/s12872-023-03693-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/25/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The key complication of myocardial infarction therapy is myocardial ischemia/reperfusion injury (MI/RI), and there is no effective treatment. The present study elucidates the mechanism of action of lncRNA KCNQ1OT1 in alleviating MI/RI and provides new perspectives and therapeutic targets for cardiac injury-related diseases. METHODS An ischemia/reperfusion (I/R) injury model of human adult cardiac myocytes (HACMs) was constructed, and the expression of KCNQ1OT1 and miR-377-3p was determined by RT‒qPCR. The levels of related proteins were detected by western blot analysis. Cell proliferation was detected by a CCK-8 assay, and cell apoptosis and ROS content were determined by flow cytometry. SOD and MDA expression as well as Fe2+ changes were detected by related analysis kits. The target binding relationships between lncRNA KCNQ1OT1 and miR-377-3p as well as between miR-377-3p and heme oxygenase 1 (HMOX1) were verified by a dual-luciferase reporter gene assay. RESULTS Myocardial ischemia‒reperfusion caused oxidative stress in HACMs, resulting in elevated ROS levels, increased Fe2+ levels, decreased cell viability, and increased LDH release (a marker of myocardial injury), and apoptosis. KCNQ1OT1 and HMOX1 were upregulated in I/R-induced myocardial injury, but the level of miR-377-3p was decreased. A dual-luciferase reporter gene assay indicated that lncRNA KCNQ1OT1 targets miR-377-3p and that miR-377-3p targets HMOX1. Inhibition of HMOX1 alleviated miR-377-3p downregulation-induced myocardial injury. Furthermore, lncRNA KCNQ1OT1 promoted the level of HMOX1 by binding to miR-377-3p and aggravated myocardial injury. CONCLUSION LncRNA KCNQ1OT1 aggravates ischemia‒reperfusion-induced cardiac injury via miR-377-3P/HMOX1.
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Affiliation(s)
- Tongcai Tan
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - Liang Tu
- Medical Experimental Center, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College (The 6th People Hospital of Chongqing), Chongqing, 400060, China
| | - Yanmei Yu
- Center for Rehabilitation Medicine, Rehabilitation & Sports Medicine Research Institute of Zhejiang Province, Department of Rehabilitation Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China
| | - MinJie He
- Geriatric Department, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| | - Xingchao Zhou
- Department of Medical Equipment, The First Affiliated Hospital of Dali University, Dali, Yunnan, 671000, China
| | - Lei Yang
- Department of Rehabilitation Medicine, The Second People's Hospital of Kunming, Kunming, Yunnan, 650506, China.
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Zuo D, Li Y, Liu H, Liu D, Fang Q, Li P, Tu L, Xiong Y, Zeng Y, Liu P. Value of Non-tumoral Liver Volume in the Prognosis of Large Hepatocellular Carcinoma Patients After R0 Resection. J Clin Transl Hepatol 2023; 11:560-571. [PMID: 36969888 PMCID: PMC10037504 DOI: 10.14218/jcth.2022.00170] [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: 04/07/2022] [Revised: 07/02/2022] [Accepted: 07/29/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND AND AIMS Hepatectomy is an effective treatment for selected patients with large hepatocellular carcinoma (HCC). This study aimed to develop a nomogram incorporating non-tumoral liver volume (non-TLV) and liver function markers to predict the patients' overall survival (OS) and disease-free survival (DFS). METHODS Data of 198 consecutive large HCC patients who underwent hepatectomy at the Zhongshan Hospital Xiamen University were collected. Another 68 patients from the Mengchao Hepatobiliary Surgery Hospital served as an external validation cohort. The nomograms were developed based on the independent prognostic factors screened by multivariate Cox regression analyses. Concordance index (C-index), calibration curves, and time-dependent receiver operating characteristic (ROC) curves were used to measure the discrimination and predictive accuracy of the models. RESULTS High HBV DNA level, low non-TLV/ICG, vascular invasion, and a poorly differentiated tumor were confirmed as independent risk factors for both OS and DFS. The model established in this study predicted 5-year post-operative survival and DFS in good agreement with the actual observation confirmed by the calibration curves. The C-indexes of the nomograms in predicting OS and DFS were 0.812 and 0.823 in the training cohort, 0.821 and 0.846 in the internal validation cohort, and 0.724 and 0.755 in the external validation cohort. The areas under the ROC curves (AUCs) of nomograms for predicted OS and DFS at 1, 3, and 5 year were 0.85, 0.86, 0.83 and 0.76, 0.76, 0.63, respectively. CONCLUSIONS Nomograms with non-TLV/ICG predicted the prognosis of single large HCC patients accurately and effectively.
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Affiliation(s)
- Dongliang Zuo
- Department of Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yuntong Li
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Hongzhi Liu
- Department of Hepatobiliary Surgery, Mengchao Hepatobiliary Surgery Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Dongxu Liu
- Public Health Clinical Center of Chengdu, Chengdu, Sichuan, China
| | - Qinliang Fang
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Pengtao Li
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Liang Tu
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Yu Xiong
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
| | - Yongyi Zeng
- Department of Hepatobiliary Surgery, Mengchao Hepatobiliary Surgery Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Correspondence to: Pingguo Liu, Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, 201 Hubin South Rd., Xiamen, Fujian 361001, China. Tel/Fax: +86-592-2993141, E-mail: ; Yongyi Zeng, Mengchao Hepatobiliary Hospital of Fujian Medical University, Xihong Road 312, Fuzhou, Fujian 350025, China. Tel/Fax: +86-591-8370-5927, E-mail:
| | - Pingguo Liu
- Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, Xiamen, Fujian, China
- Correspondence to: Pingguo Liu, Department of Hepatobiliary Surgery, Zhongshan Hospital Xiamen University, 201 Hubin South Rd., Xiamen, Fujian 361001, China. Tel/Fax: +86-592-2993141, E-mail: ; Yongyi Zeng, Mengchao Hepatobiliary Hospital of Fujian Medical University, Xihong Road 312, Fuzhou, Fujian 350025, China. Tel/Fax: +86-591-8370-5927, E-mail:
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Wang D, He Y, Nie L, Guo S, Tu L, Guo X, Wang A, Liu P, Zhu Y, Wu X, Chen Z. Integrated IBD Analysis, GWAS Analysis and Transcriptome Analysis to Identify the Candidate Genes for White Spot Disease in Maize. Int J Mol Sci 2023; 24:10005. [PMID: 37373152 DOI: 10.3390/ijms241210005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/01/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Foundation parents (FPs) play an irreplaceable role in maize breeding practices. Maize white spot (MWS) is an important disease in Southwest China that always seriously reduces production. However, knowledge about the genetic mechanism of MWS resistance is limited. In this paper, a panel of 143 elite lines were collected and genotyped by using the MaizeSNP50 chip with approximately 60,000 single nucleotide polymorphisms (SNPs) and evaluated for resistance to MWS among 3 environments, and a genome-wide association study (GWAS) and transcriptome analysis were integrated to reveal the function of the identity-by-descent (IBD) segments for MWS. The results showed that (1) 225 IBD segments were identified only in the FP QB512, 192 were found only in the FP QR273 and 197 were found only in the FP HCL645. (2) The GWAS results showed that 15 common quantitative trait nucleotides (QTNs) were associated with MWS. Interestingly, SYN10137 and PZA00131.14 were in the IBD segments of QB512, and the SYN10137-PZA00131.14 region existed in more than 58% of QR273's descendants. (3) By integrating the GWAS and transcriptome analysis, Zm00001d031875 was found to located in the region of SYN10137-PZA00131.14. These results provide some new insights for the detection of MWS's genetic variation mechanisms.
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Affiliation(s)
- Dong Wang
- College of Agriculture, Guizhou University, Guiyang 550006, China
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yue He
- College of Agriculture, Guizhou University, Guiyang 550006, China
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Lei Nie
- College of Agriculture, Guizhou University, Guiyang 550006, China
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Shuang Guo
- College of Agriculture, Guizhou University, Guiyang 550006, China
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Liang Tu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Xiangyang Guo
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Angui Wang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Pengfei Liu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Yunfang Zhu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - Xun Wu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
- Ministry of Agriculture and Rural Affairs Key Laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Region, Guiyang 550006, China
| | - Zehui Chen
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
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Wu X, Liu Y, Lu X, Tu L, Gao Y, Wang D, Guo S, Xiao Y, Xiao P, Guo X, Wang A, Liu P, Zhu Y, Chen L, Chen Z. Integration of GWAS, linkage analysis and transcriptome analysis to reveal the genetic basis of flowering time-related traits in maize. Front Plant Sci 2023; 14:1145327. [PMID: 37035050 PMCID: PMC10073556 DOI: 10.3389/fpls.2023.1145327] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
Maize (Zea mays) inbred lines vary greatly in flowering time, but the genetic basis of this variation is unknown. In this study, three maize flowering-related traits (DTT, days to tasselling; DTP, days to pollen shed; DTS, days to silking) were evaluated with an association panel consisting of 226 maize inbred lines and an F2:3 population with 120 offspring from a cross between the T32 and Qi319 lines in different environments. A total of 82 significant single nucleotide polymorphisms (SNPs) and 117 candidate genes were identified by genome-wide association analysis. Twenty-one quantitative trait loci (QTLs) and 65 candidate genes were found for maize flowering time by linkage analysis with the constructed high-density genetic map. Transcriptome analysis was performed for Qi319, which is an early-maturing inbred line, and T32, which is a late-maturing inbred line, in two different environments. Compared with T32, Qi319 showed upregulation of 3815 genes and downregulation of 3906 genes. By integrating a genome-wide association study (GWAS), linkage analysis and transcriptome analysis, 25 important candidate genes for maize flowering time were identified. Together, our results provide an important resource and a foundation for an enhanced understanding of flowering time in maize.
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Affiliation(s)
- Xun Wu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Ying Liu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Xuefeng Lu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Liang Tu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Yuan Gao
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Dong Wang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Shuang Guo
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Yifei Xiao
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Pingfang Xiao
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
- College of Agriculture, Guizhou University, Guiyang, Guizhou, China
| | - Xiangyang Guo
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Angui Wang
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Pengfei Liu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Yunfang Zhu
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
| | - Lin Chen
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zehui Chen
- Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, China
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Chen Y, Tu L, Jiang L, Ji HX. [Analysis of serum CA125 and related influencing factors in silicosis patients with pulmonary heart disease]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:209-212. [PMID: 37006147 DOI: 10.3760/cma.j.cn121094-20211115-00563] [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: 04/04/2023]
Abstract
Objective: To analyze the serum carbohydrate antigen 125 (CA125) level and its influencing factors in male silicosis patients with pulmonary heart disease. Methods: In October 2021, data of 38 male patients with simple silicosis (silicosis group), 28 cases of silicosis with pulmonary heart disease (pulmonary heart disease group), and 27 healthy controls (control group) in the same age group were collected in inpatient and outpatient of Nanjing Occupational Disease Prevention and Control Hospital from January 2017 to December 2020. The serum CA125 levels of the three groups were compared, and the correlation between disease-related indexes and serum CA125 in silicosis patients with pulmonary heart disease was analyzed, as well as the influencing factors of pulmonary heart disease and serum CA125 levels in silicosis patients. Results: The serum CA125 level[ (19.95±7.52) IU/ml] in pulmonary heart disease group was higher than that in silicosis group[ (12.98±6.35) IU/ml] and control group[ (9.17±5.32) IU/ml] (P<0.05). There was no significant difference in serum CA125 level between the silicosis group and the control group (P>0.05). Serum CA125 levels were positively correlated with blood uric acid and fasting blood glucose in silicosis patients with pulmonary heart disease (r=0.39, 0.46, P<0.05). Serum CA125 level was a risk factor for silicosis patients with pulmonary heart disease (OR=1.13, 95%CI: 1.02-1.24, P<0.05). Dust exposure time, lactate dehydrogenase and smoking history were positively correlated with serum CA125 level in silicosis patients (P<0.05) . Conclusion: The serum CA125 level of male silicosis patients with pulmonary heart disease is significantly increased, and the level of CA125 is correlated with the level of fasting blood glucose and blood uric acid.
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Affiliation(s)
- Y Chen
- Department of Occupational Diseases, Nanjing Occupational Disease Prevention and Control Hospital, Nanjing 210042, China
| | - L Tu
- Department of Pharmacy, Nanjing Occupational Disease Prevention and Control Hospital, Nanjing 210042, China
| | - L Jiang
- Laboratory of Nanjing Occupational Disease Prevention and Control Hospital, Nanjing 210042, China
| | - H X Ji
- Department of Occupational Diseases, Nanjing Occupational Disease Prevention and Control Hospital, Nanjing 210042, China
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Robert F, Berrebeh N, Guignabert C, Humbert M, Bailly S, Tu L, Savale L. [Dysfunction of endothelial BMP-9 signaling in pulmonary vascular disease]. Rev Mal Respir 2023; 40:234-238. [PMID: 36828679 DOI: 10.1016/j.rmr.2023.01.017] [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: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 02/24/2023]
Abstract
The signaling pathway of the bone morphogenetic protein (BMP)-9 binding to the endothelial receptor BMP receptor type II (BMPR-II), activin receptor-like kinase-1 (ALK1) and the coreceptor endoglin is essential to maintain the pulmonary vascular integrity. Dysregulation of this pathway is implicated in numerous vascular diseases, such as pulmonary arterial hypertension (PAH), hereditary hemorrhagic telangiectasia (HHT) and hepatopulmonary syndrome (HPS). This article aims to provide a comprehensive review of the implication of the BMP-9/BMPR-II/ALK1/endoglin pathway in the pathophysiology of these diseases.
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Affiliation(s)
- F Robert
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France
| | - N Berrebeh
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France
| | - C Guignabert
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France
| | - M Humbert
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France; Service de pneumologie et soins intensifs respiratoires, Centre de référence de l'hypertension pulmonaire, Hôpital Bicêtre, Assistance publique-Hôpitaux de Paris (AP-HP), 94276 Le Kremlin-Bicêtre, France
| | - S Bailly
- Laboratoire BioSanté, Université Grenoble Alpes, INSERM, CEA, Grenoble, France
| | - L Tu
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France
| | - L Savale
- Faculté de médecine, Université Paris-Saclay, Inserm UMR_S 999 - Bâtiment de recherche (2(e) étage), 63, rue Gabriel-Péri, 94276 Le Kremlin-Bicêtre, France; Inserm Unité mixte de recherche 999, Hôpital Marie-Lannelongue, 92350 Le Plessis-Robinson, France; Service de pneumologie et soins intensifs respiratoires, Centre de référence de l'hypertension pulmonaire, Hôpital Bicêtre, Assistance publique-Hôpitaux de Paris (AP-HP), 94276 Le Kremlin-Bicêtre, France.
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Berrebeh N, Thuillet R, Ottaviani M, Chelgham M, Anegon I, Schermuly R, Kojonazarov B, Humbert M, Bailly S, Guignabert C, Tu L. BMP-9 loss alters lung vascular integrity and partially attenuates experimental pulmonary hypertension. Rev Mal Respir 2023. [DOI: 10.1016/j.rmr.2022.11.033] [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: 02/18/2023]
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Zhou Y, Lin Z, Tu L, Lv Q. Online Document Transmission and Recognition of Digital Power Grid with Knowledge Graph. EAI Endorsed Scal Inf Syst 2023. [DOI: 10.4108/eetsis.v10i3.2831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Inspired by the ever-developing information technology and scalable information systems, digital smart grid networks with knowledge graph have been widely applied in many practical scenarios, where the online document transmission and recognition plays an important role in wireless environments. In this article, we investigate the online document transmission and recognition of digital power grid with knowledge graph. In particular, we jointly consider the impact of online transmission and recognition based on computing, where the wireless transmission channels and computing capability are randomly varying. For the considered system, we investigate the system performance by deriving the analytical expression of outage probability, defined by the transmission and recognition latency. Finally, we provide some results to verify the proposed studies, and show that the wireless transmission and computing capability both impose a significant impact on the online document transmission and recognition of digital power grid networks.
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Zhou Y, Lin Z, Tu L, Huang J, Zhang Z. Analysis and Design of Standard Knowledge Service System based on Deep Learning. EAI Endorsed Scal Inf Syst 2022. [DOI: 10.4108/eetsis.v9i6.2637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The development of information technology has changed the mode of communication of social information, and this change has put forward new requirements on the contents, methods and even objects of information science research. Knowledge service in the information service process can extract knowledge and information content from various explicit and implicit knowledge resources according to people’s needs, build knowledge networks, and provide knowledge content or solutions for users’ problems. Hence, it is very important to investigate how to analyze and design the advanced standard knowledge service system based on deep learning. To this end, we firstly introduce the typical deep learning networks of convolutional neural network (CNN) for the knowledge service system, and then employ the CNN to implement the knowledge classification based on deep learning. Finally, some simulation results on the knowledge service system are presented to validate the proposed studies in this paper.
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Zhou Y, Lin Z, Tu L, Song Y, Wu Z. Big Data and Knowledge Graph Based Fault Diagnosis for Electric Power Systems. EAI Endorsed Trans Ind Net Intel Syst 2022. [DOI: 10.4108/eetinis.v9i32.1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Fault detection plays an important role in the daily maintenance of power electric system. Big data and knowledge graph (KG) have been proposed by researchers to solve many problems in industrial Internet of Things, which also give lots of potentials in improving the performance of fault detection for electric power systems. In particular, this paper analyzes a distributed knowledge graph framework for fault detection in the electric power systems, where multiple devices train their local detection models used for fault detection assisted with a central server. Each device owns its local data set composed of historical fault information and current device state, which can be used to train a local model for fault detection. To enhance the detection performance, the distributed devices interact with each other in the KG framework, where the devices ought to achieve the regional computation in addition to the model aggregation within a specified latency threshold. Through searching for the vibrant qualities together with determined ability at the devices, we enhance the knowledge graph framework by the optimum variety of energetic devices together with the restriction of latency as well as data transmission. Particularly, two data transmission bandwidth allocation (BA) schemes are developed for the distributed knowledge graph framework, through which scheme I is actually bared after the instantaneous device state information (DSI), and scheme II utilizes particle swarm optimization (PSO) technique along with the statistical DSI. The results of simulation on the examination as well as convergence are lastly demonstrated to show the advantages of the proposed distributed KG framework in the fault detection for the electric power systems.
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Tu L, Gao L, Wang Q, Cao Z, Huang R, Zheng Y, Liu J. Substrate-Switched Chemodivergent Pyrazole and Pyrazoline Synthesis: [3 + 2] Cycloaddition/Ring-Opening Rearrangement Reaction of Azadienes with Nitrile Imines. J Org Chem 2022; 87:3389-3401. [PMID: 35157462 DOI: 10.1021/acs.joc.1c02998] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
By virtue of a fundamentally new reaction model of benzofuran-derived azadienes (BDAs), an unprecedented synthesis of biologically important pyrazoles has been achieved through a tandem [3 + 2] cycloaddition/ring-opening rearrangement reaction of BDAs with nitrile imines. The nature and type of substrates are found to act as a chemical switch to trigger two distinct reaction pathways. A minor modification to the substrates allows the access to spiro-pyrazolines.
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Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Limei Gao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Qiang Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Zhixing Cao
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Rong Huang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China.,National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
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16
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Chen P, Yu M, Deng Z, Zhang M, Liu J, Fan J, Hu C, Tu L. Rotary table wobble error analysis and correction of a rotating accelerometer gravity gradiometer. Rev Sci Instrum 2022; 93:024501. [PMID: 35232129 DOI: 10.1063/5.0077151] [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] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
In a rotating accelerometer gravity gradiometer (RAGG), rotary table wobble refers to the shift in the direction of the spin axis during operation. This motion causes errors in the output of the RAGG, but the mechanism is not clear. The purpose of this paper is to analyze the relationship between rotary table wobble and RAGG errors and to propose a method for rejecting these errors. We consider the influence of attitude changes, angular velocity, and angular acceleration caused by the wobble on the specific force, and we describe the error transmission process based on the accelerometer configuration and its measurement principle. Furthermore, we show through a simulated experiment that when the angular velocity noise caused by the wobble is 1 μrad/s, this will produce errors of tens of E. We propose a post-error correction method that is based on the higher-precision RAGG model and motion measurement. The errors in the two channels of the RAGG are reduced to 3.69 E and 1.85 E after error correction. The error analysis of the effects of wobble on a RAGG and the proposed error correction method are of great significance for the development of high-precision gradiometers.
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Affiliation(s)
- P Chen
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Yu
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - Z Deng
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - M Zhang
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - J Liu
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - J Fan
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - C Hu
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | - L Tu
- MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
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Certain MC, Robert F, Baron A, Sitbon O, Humbert M, Guignabert C, Tu L, Savale L. Syndrome hépatopulmonaire : prévalence, physiopathologie et implications cliniques. Rev Mal Respir 2022; 39:84-89. [DOI: 10.1016/j.rmr.2022.02.055] [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] [Received: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 11/28/2022]
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Tu L, Bajaj SS, Stanford FC. Promoting stigma. Br Dent J 2021; 231:663-664. [PMID: 34893706 PMCID: PMC9910580 DOI: 10.1038/s41415-021-3735-z] [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: 01/24/2023]
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Cardouat G, Douard M, Roubenne L, Bouchet C, Kmecová Z, Robillard P, Guignabert C, Tu L, Delcambre F, Marthan R, Muller B, Guibert C, Freund-Michel V. NGF induces pulmonary arterial hyperreactivity through Connexin 43 increased expression. Rev Mal Respir 2021. [DOI: 10.1016/j.rmr.2021.02.029] [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: 11/30/2022]
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20
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Jutant E, Tu L, Le Vely B, Thuillet R, Humbert M, Guignabert C, Huertas A. Regulation of Type I cytokine receptors as a target for pulmonary arterial hypertension treatment? Rev Mal Respir 2021. [DOI: 10.1016/j.rmr.2021.02.026] [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: 10/21/2022]
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21
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Tu L, Gao L, Wang X, Shi R, Ma R, Li J, Lan X, Zheng Y, Liu J. [3 + 2] Cycloaddition of Nitrile Imines with Enamides: An Approach to Functionalized Pyrazolines and Pyrazoles. J Org Chem 2020; 86:559-573. [PMID: 33301335 DOI: 10.1021/acs.joc.0c02244] [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: 11/30/2022]
Abstract
An efficient [3 + 2] cycloaddition of in situ generated nitrile imines with enamides has been established. A wide range of functionalized pyrazoline derivatives (53 examples) were obtained in moderate to good yields (up to 96%) under very mild conditions. This protocol features broad substrate scope, good functional group tolerance, and operational simplicity. Practical transformation of the products into useful pyrazoles via a one-pot process and the scalability of this protocol highlight the utility of this synthetic methodology.
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Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Limei Gao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaomeng Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Ruijie Shi
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Rupei Ma
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Junfei Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Xiaoshuang Lan
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China
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Sanges S, Rice L, Tu L, Cracowski J, Montani D, Mantero J, Ternynck C, Marot G, Hachulla E, Launay D, Humbert M, Guignabert C, Lafyatis R. Identification de biomarqueurs de sévérité hémodynamique de l’hypertension artérielle pulmonaire associée à la sclérodermie systémique par analyse du protéome sérique. Rev Med Interne 2020. [DOI: 10.1016/j.revmed.2020.10.059] [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: 10/22/2022]
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Cai Z, Klein T, Geenen L, Tu L, Tian S, Van Den Bosch A, De Rijke Y, Reiss I, Boersma E, Duncker D, Boomars K, Guignabert C, Merkus D. Lower plasma melatonin levels predict worse long-term survival in pulmonary arterial hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3815] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Exogenous melatonin has been reported to be beneficial in the treatment of pulmonary hypertension (PH) in animal models. Multiple mechanisms may be involved, with melatonin exerting anti-oxidant and anti-inflammatory effects, as well as inducing vasodilation and cardio-protection. However, endogenous levels of melatonin in treatment-naïve pulmonary arterial hypertension (PAH) patients and their clinical significance are still unknown.
Methods and results
Plasma levels of endogenous melatonin were measured by liquid chromatography-tandem mass spectrometry in treatment-naïve PAH patients (n=43) and healthy controls (n=111). Melatonin levels were higher in PAH patients when compared with controls (Median 118.9 [IQR 109.3–147.7] versus 108.0 [102.3–115.2] pM, P<0.001) (Figure 1A). The overall mortality was 26% (11/43) during a median long-term follow-up of 42 [IQR: 32–58] months. When PAH patients were stratified into 4 groups according to the quartiles of melatonin levels, the mortality from below 1st quartile to above 4th quartile was 55% (6/11), 10% (1/10), 0% (0/12), and 40% (4/10), respectively (Figure 1B). Kaplan-Meier analysis further showed that patients with melatonin levels below the 1st quartile (<109.3 pM) had a worse long-term survival than patients with melatonin levels above the 1st quartile (Mean survival times were 46 [95% CI: 30–65] versus 68 [58–77] months, Log-rank, p=0.026) (Figure 1C).
Conclusion
Endogenous melatonin levels were increased in treatment-naïve PAH patients, and lower levels of melatonin were associated with worse long-term survival in patient with PAH, however, whether exogenous melatonin supplements may be effective as a therapeutic strategy in human PAH remains to be established.
Figure 1
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): This work was supported by the China Scholarship Council (201606230252) as well as the Netherlands CardioVascular Research Initiative: an initiative with support of the Dutch Heart Foundation (CVON2014-11, RECONNECT), and German Center for Cardiovascular Research (DZHK81Z0600207). Instrumentation support was received from AB Sciex, ltd. for LC-MS/MS analyses performed in this study.
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Affiliation(s)
- Z Cai
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - T Klein
- Erasmus Medical Center, Clinical Chemistry, Rotterdam, Netherlands (The)
| | - L.W Geenen
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - L Tu
- INSERM UMR_S 999 Hôpital Marie Lannelongue and Université Paris-Saclay School of Medicine, Paris, France
| | - S Tian
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | | | - Y.B De Rijke
- Erasmus Medical Center, Clinical Chemistry, Rotterdam, Netherlands (The)
| | - I.K.M Reiss
- Erasmus Medical Center, Pediatrics/Neonatology, Rotterdam, Netherlands (The)
| | - E Boersma
- Erasmus University Medical Centre, Clinical Epidemiology, Rotterdam, Netherlands (The)
| | - D.J Duncker
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - K.A Boomars
- Erasmus Medical Center, Pulmonary Medicine, Rotterdam, Netherlands (The)
| | - C Guignabert
- INSERM UMR_S 999 Hôpital Marie Lannelongue and Université Paris-Saclay School of Medicine, Paris, France
| | - D Merkus
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
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Cai Z, Klein T, Tu L, Geenen L, Tian S, Van Der Ley C, Van Faassen M, Kema I, Van Den Bosch A, De Rijke J, Reiss I, Duncker D, Boomars K, Guignabert C, Merkus D. Different tryptophan-kynurenine metabolism profiles in human pulmonary arterial hypertension and animal models of pulmonary hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3814] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
De novo NAD+ synthesis through the tryptophan-kynurenine (TK) metabolism was recognized as an important pathway in improving mitochondrial function and survival of injury or apoptotic cells, which are key processes involved in the pathogenesis of pulmonary arterial hypertension (PAH). Although abnormal TK metabolism has been reported in human PAH, the difference between human and animal models of pulmonary hypertension (PH) are currently unknown.
Objective
Determine and compare TK metabolism profiles in plasma from human PAH and 3 animal models of PH.
Methods
Human plasma was collected from treatment naïve patients with PAH (n=43) and healthy controls (n=111). Animal plasma was collected from 3 animal models of PH and corresponding controls, including monocrotaline (MCT) induced PH in rat (n=7, control n=6), Sugen + hypoxia (SuHx) induced PH in rat (n=5, control n=6), and pulmonary vein banding (PVB) induced PH in swine (n=7, control n=6). TK metabolites were determined using liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Results
TK metabolism was altered in the plasma from of PAH compared to healthy controls (Figure 1A). Lower tryptophan (0.8 fold vs Control, p<0.0001), maintained 3-hydroxyanthranilic acid, and higher kynurenine, 3-hydroxykynurenine, anthranilic acid, and quinolinic acid (1.5, 2.6, 2.0, 2.6 fold vs Control, respectively, p all<0.0001) were seen in the plasma from human PAH. In the rat SuHx-PH model, kynurenine (0.7 fold, p<0.01) and quinolinic acid (0.5 fold, p<0.001) were lower, while 3-hydroxyanthranilic acid (4.3 fold, p<0.001) was higher in PH compared to control (Figure 1B). However, the TK metabolism was unaltered in MCT-PH model in rat (Figure 1C), and PVB-PH model in swine (Figure 1D).
Conclusions
TK metabolism was altered in the plasma from human PAH. The TK metabolism profiles were different among 3 animal models of PH, but did not mimic the profile in human PAH. Further research is required to determine the mechanism(s) behind the abnormal TK metabolism in human PAH as well as whether these mechanisms relate to disease onset or progression.
Figure 1
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): This work was supported by the China Scholarship Council (201606230252) as well as the Netherlands CardioVascular Research Initiative: an initiative with support of the Dutch Heart Foundation (CVON2014-11, RECONNECT), and German Center for Cardiovascular Research (DZHK81Z0600207). Instrumentation support was received from AB Sciex, ltd. for LC-MS/MS analyses performed in this study.
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Affiliation(s)
- Z Cai
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - T Klein
- Erasmus Medical Center, Clinical Chemistry, Rotterdam, Netherlands (The)
| | - L Tu
- INSERM UMR_S 999 Hôpital Marie Lannelongue and Université Paris-Saclay School of Medicine, Paris, France
| | - L.W Geenen
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - S Tian
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - C Van Der Ley
- University Medical Center Groningen, Laboratory Medicine, Groningen, Netherlands (The)
| | - M Van Faassen
- University Medical Center Groningen, Laboratory Medicine, Groningen, Netherlands (The)
| | - I Kema
- University Medical Center Groningen, Laboratory Medicine, Groningen, Netherlands (The)
| | | | - J.B De Rijke
- Erasmus Medical Center, Clinical Chemistry, Rotterdam, Netherlands (The)
| | - I.K.M Reiss
- Erasmus Medical Center, Pediatrics/Neonatology, Rotterdam, Netherlands (The)
| | - D.J Duncker
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
| | - K.A Boomars
- Erasmus Medical Center, Pulmonary Medicine, Rotterdam, Netherlands (The)
| | - C Guignabert
- INSERM UMR_S 999 Hôpital Marie Lannelongue and Université Paris-Saclay School of Medicine, Paris, France
| | - D Merkus
- Erasmus Medical Center, Cardiology, Rotterdam, Netherlands (The)
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Li XQ, Tu L, Wang M, Ma XL, Yang LX, Shen YY, Zhuang C, Zhao WY, Qiu JF, Zhao G, Cao H. [Clinicopathological features and prognosis of gastrointestinal stromal tumor with PDGFRA-D842V mutation]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:872-879. [PMID: 32927512 DOI: 10.3760/cma.j.cn.441530-20200706-00405] [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
Objective: Platelet-derived growth factor alpha (PDGFRA) mutations are respectively rare in gastrointestinal stromal tumors (GIST). Most GIST with PDGFRA exon 18 mutations including D842V mutation are highly resistant to imatinib. The treatment of GIST harboring PDGFRA primary drug-resistant mutation is a major challenge. This article aims to investigate clinicopathologic features of GIST with PDGFRA-D842V mutation and the efficacy of comprehensive treatment, providing a reference for clinical practice. Methods: A retrospective cohort study was conducted to collect the clinicopathological and follow-up data of patients with GIST harboring PDGFRA mutation who were diagnosed and treated in the GIST Clinic of Renji Hospital from January 2005 to May 2020. According to the mutation site, the enrolled patients were divided into D842V mutation group and non-D842V mutation group. The differences of clinicopathologic characteristics between the two groups were compared. Furthermore, overall survival and prognostic factors were analyzed. Results: A total of 71 patients with PDGFRA-mutant GIST were included in this study, including 47 cases of D842V mutation (66.2%) and 24 cases of non-D842V mutation (33.8%). There were 28 male patients and 19 female patients in D842V mutation group, with a median age of 60 (36-82) years. There were 16 male patients and 8 female patients in non-D842V mutation group, with a median age of 62 (30-81) years. There were no significant differences in age, gender, primary location, surgical procedure, tumor size, mitotic count, expression of CD117 and DOG1, Ki-67 proliferation index and modified NIH grade between the two groups (all P>0.05). The positive rate of CD34 was 89.4% (42/47) and 62.5% (15/24) in the D842V mutation group and the non-D842V mutation group, respectively, with a statistically significant difference (χ(2)=5.644, P=0.018). Among all the cases, 66 cases underwent R0 resection without preoperative treatment; two cases underwent emergency operation with R1 resection because of tumor rupture; 2 cases were not operated after the pathological and mutation types were confirmed by biopsy (one case received avapritinib treatment and obtain partial remission). One case was diagnosed as wild-type GIST per needle biopsy in another institute, and underwent R0 resection after preoperative imatinib treatment for 6 months. After surgery, 5 high-risk GIST patients with D842V mutation and 5 high-risk GIST patients with non-D842V mutation were treated with imatinib for more than one year. The median follow-up time was 37 (1-153) months. As of the last follow-up among the patients who received R0 resection, 4 patients with D842V mutation had relapse, of whom 1 was in the period of imatinib administration, and the 3-year relapse-free survival rate was 94.2%; none of the patients with non-D842V mutation had relapse. There was no statistically significant difference in relapse-free surivval between two groups (P=0.233). Univariate analysis revealed that mitotic count (P=0.002), Ki-67 proliferation index (P<0.001) and modified NIH grade (P=0.025) were the factors associated with relapse-free survival of patients with D842V mutation after R0 resection (all P<0.05). However, the above factros were not testified as independant prognostic facors in multivariate Cox analysis (all P<0.05). Conclusion: Clinicopathologic features and the efficacy of radical resection in patients with PDGFRA-D842V mutation are similar to those in patients with non-D842V mutation.
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Affiliation(s)
- X Q Li
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - L Tu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - M Wang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - X L Ma
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - L X Yang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Y Y Shen
- Department of Pathology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - C Zhuang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - W Y Zhao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - J F Qiu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - G Zhao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H Cao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
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Cardouat G, Douard M, Roubenne L, Kmecova S, Robillard P, Guignabert C, Tu L, Delcambre F, Dubois M, Marthan R, Muller B, Guibert C, Freund-Michel V. NGF induces pulmonary arterial hyperreactivity through Connexin 43 increased expression. Archives of Cardiovascular Diseases Supplements 2020. [DOI: 10.1016/j.acvdsp.2020.03.036] [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: 11/28/2022]
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Zeng H, Deng S, Zhou Z, Qiu X, Jia X, Li Z, Wang J, Duan H, Tu L, Wang J. Diagnostic value of combined nucleic acid and antibody detection in suspected COVID-19 cases. Public Health 2020; 186:1-5. [PMID: 32731151 PMCID: PMC7351380 DOI: 10.1016/j.puhe.2020.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/30/2020] [Accepted: 07/06/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Nucleic acid testing is the gold standard method for the diagnosis of coronavirus disease 2019 (COVID-19); however, large numbers of false-negative results have been reported. In this study, nucleic acid detection and antibody detection (IgG and IgM) were combined to improve the testing accuracy of patients with suspected COVID-19. STUDY DESIGN The positive rate of nucleic acid detection and antibody detection (IgG and IgM) were compared in suspected COVID-19 patients. METHODS A total of 71 patients with suspected COVID-19 were selected to participate in this study, which included a retrospective analysis of clinical features, imaging examination, laboratory biochemical examination and nucleic acid detection and specific antibody (IgM and IgG) detection. RESULTS The majority of participants with suspected COVID-19 presented with fever (67.61%) and cough (54.93%), and the imaging results showed multiple small patches and ground-glass opacity in both lungs, with less common infiltration and consolidation opacity (23.94%). Routine blood tests were mostly normal (69.01%), although only a few patients had lymphopenia (4.23%) or leucopenia (12.68%). There was no statistical difference in the double-positive rate between nucleic acid detection (46.48%) and specific antibody (IgG and IgM) detection (42.25%) (P = 0.612), both of which were also poorly consistent with each other (kappa = 0.231). The positive rate of combined nucleic acid detection and antibody detection (63.38%) was significantly increased, compared with that of nucleic acid detection (46.48%) and that of specific antibody (IgG and IgM) detection (42.25%), and the differences were statistically significant (P = 0.043 and P = 0.012, respectively). CONCLUSIONS Nucleic acid detection and specific antibody (IgG and IgM) detection had similar positive rates, and their combination could improve the positive rate of COVID-19 detection, which is of great significance for diagnosis and epidemic control.
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Affiliation(s)
- H Zeng
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - S Deng
- Scientific Research Platform, The Second Clinical Medical College, Guangdong Medical University, Dongguan 523808, China
| | - Z Zhou
- Department of Radiology, Shenzhen People's Hospital, Shenzhen 518020, China
| | - X Qiu
- Special Clinic Department, Southern University of Science and Technology Hospital, Shenzhen 518052, China
| | - X Jia
- Department of Clinical Laboratory Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - Z Li
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - J Wang
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - H Duan
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - L Tu
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China
| | - J Wang
- Department of Respiratory and Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Shenzhen 518110, China.
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Choiniere R, Violette P, Morin M, Tu L, Reed C, Philie C, Legault B, Beaudry M, Guyatt G, Richard P. Benefits and harms of surgical treatments for post-prostatectomy urinary incontinence: Systematic review and meta-analysis. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34035-0] [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: 11/16/2022] Open
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Tu L, Xie Y, Lv Q, Yang M, Liao Z, Cao S, Wei Q, Gu J. AB0727 WORK OUTCOMES AND ASSOCIATED FACTORS IN ANKYLOSING SPONDYLITIS PATIENTS IN CHINA. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Poorer work productivity due to pain and functional impairment is commonly seen in ankylosing spondylitis (AS) patients, which may contribute to huge social economic burden. However, data about work outcomes and associated factors in Chinese AS patients were barely reported.Objectives:To assess work outcomes and identify factors associated with poor work productivity in patients with AS in China.Methods:A cross-sectional study was conducted in China. Adult patients (aged ≥ 18 years) fulfilled the 1984 New York modified criteria of AS were enrolled from rheumatology center from Jan 2017 to Aug 2017. All participants completed questionnaires about socio-demographic characteristics, disease characteristics, quality of life and the Work productivity and activity impairment questionnaire in AS (WPAI:SpA) to accesses the impact of chronic health conditions on job performance and productivity. Factors associated with work outcomes were evaluated.Results:A total of 91 patients with AS were included: 87.8% males, 78.02% employed, mean age and disease duration of 30 and 10 years respectively. The mean (SD) activity impairment of all patients was 48.57% (22.02%). For patients with employed work, mean (SD) absenteeism, presenteeism and work productivity loss were 10.22% (19.44%), 43.86% (22.48%) and 47.92% (25.81%) respectively. In multivariable analysis, activity impairment was associated with Bath Ankylosing Spondylitis Functional Index (BASFI) (P<0.01) and Ankylosing Spondylitis Quality of Life (ASQoL) (P<0.01). Absenteeism was associated with disease duration (P=0.03). Presenteeism was associated with disease duration (P=0.04), BASFI (P<0.01) and ASQoL (P<0.01). Work productivity loss was associated with BASFI (P<0.01) and ASQoL (P<0.01).Conclusion:Longer disease duration, reduced physical function and poorer quality of life are associated with reduced work productivity in Chinese AS patients.References:[1]Boonen A, van der Heijde D, Landewe R, Spoorenberg A, Schouten H, Rutten-van Molken M, et al. Work status and productivity costs due to ankylosing spondylitis: comparison of three European countries. Annals of the rheumatic diseases. 2002;61(5):429-37.[2]Martindale J, Shukla R, Goodacre J. The impact of ankylosing spondylitis/axial spondyloarthritis on work productivity. Best Pract Res Clin Rheumatol. 2015;29(3):512-23.[3]Castillo-Ortiz JD, Ramiro S, Landewe R, van der Heijde D, Dougados M, van den Bosch F, et al. Work Outcome in Patients With Ankylosing Spondylitis: Results From a 12-Year Followup of an International Study. Arthritis Care Res (Hoboken). 2016;68(4):544-52.[4]Sag S, Nas K, Sag MS, Tekeoglu I, Kamanli A. Relationship of work disability between the disease activity, depression and quality of life in patients with ankylosing spondylitis. J Back Musculoskelet Rehabil. 2018;31(3):499-505.[5]Goh Y, Kwan YH, Leung YY, Fong W, Cheung PP. A cross-sectional study on factors associated with poor work outcomes in patients with axial spondyloarthritis in Singapore. Int J Rheum Dis. 2019;22(11):2001-8.Disclosure of Interests:None declared
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Sanges S, Rice L, Tu L, Cracowski JL, Montani D, Mantero J, Ternynck C, Marot G, Hachlla E, Launay D, Humbert M, Guignabert C, Lafyatis R. FRI0590 BIOMARKERS OF HEMODYNAMIC SEVERITY OF SYSTEMIC-SCLEROSIS ASSOCIATED PULMONARY ARTERIAL HYPERTENSION BY SERUM PROTEOME ANALYSIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objectives:To investigate alterations in the serum proteome of patients with systemic sclerosis (SSc)-associated pulmonary hypertension (PAH), to identify proteins that correlated with hemodynamic severity and to determine their possible pathogenic role.Methods:Patients were included if they fulfilled the following criteria: diagnosis of limited cutaneous SSc, no extensive interstitial lung disease (ILD), and no treatment with PAH-specific therapy. Patients were classified as cases if they had a definitive diagnosis of PAH confirmed by right heart catheterization (RHC) and a serum sample collected on the same day as RHC. They were classified as controls if they had no sign suggestive of PAH on echocardiography.Results:In a first exploratory step, serum expression of 1129 proteins was assessed in 15 cases and 16 controls by a high-throughput proteomic assay (SOMAscan). We identified 53 proteins differentially expressed between the 2 groups. Among these 53 candidates, only 2 correlated significantly with pulmonary vascular resistance (PVR): chemerin (p=0.01,ρ=0.62) and SET nuclear proto-oncogen (SET) (p=0.01,ρ=0.62).To validate these results, serum levels of chemerin and SET were measured by ELISA assay in 25 additional cases and 19 additional controls. Chemerin levels were confirmed to be significantly higher in cases (p=0.01) and correlated with PVR (p=0.01,ρ=0.46).In a second step, to study the potential pathophysiological role of chemerin, we performed confocal immunofluorescence analyses on explanted lungs of healthy controls, SSc-ILD without PAH and SSc-PAH patients. Chemerin receptor, CMKLR1, was significantly increased on SSc-ILD and SSc-PAH pulmonary artery smooth muscle cells (PA-SMC).We then tested the effect of chemerin on PA-SMC proliferation by stimulating PA-SMCs from idiopathic pulmonary arterial hypertension (iPAH) patients with serum from SSc patients with and without PH, in the presence or absence of a CMKLR1 inhibitor. PA-SMCs from iPAH were confirmed to have higher mRNA expression of CMKLR1 than controls (p=0.03). Serum from SSc-PH patients induced a significantly higher PA-SMC proliferation (p=0.005) than serum from controls. This difference was no longer significant (p=0.69) when adding the CMKLR1 inhibitor α–NETA.Conclusion:Chemerin is a surrogate biomarker for PVR in SSc-PAH. Increased chemerin and its receptor, CMKLR1, contribute to the SSc-PAH pathogenesis by inducing PA-SMC proliferation.Acknowledgments:NoneDisclosure of Interests:Sebastien SANGES: None declared, Lisa Rice: None declared, Ly Tu: None declared, Jean-Luc Cracowski Grant/research support from: JL Cracowski received grants from United Therapeutic, Bioprojet and Topadur, David Montani Grant/research support from: Dr. MONTANI reports grants and personal fees from Actelion, grants and personal fees from Bayer, personal fees from GSK, personal fees from Pfizer, personal fees from MSD, personal fees from Chiesi, outside the submitted work, Julio Mantero: None declared, Camille Ternynck: None declared, Guillemette Marot: None declared, Eric Hachlla: None declared, David Launay Grant/research support from: Dr. Launay reports personal fees from Actelion, grants and personal fees from Takeda, grants and personal fees from CSL Behring, outside the submitted work., Marc Humbert Grant/research support from: Dr. Humbert reports personal fees from Actelion, grants and personal fees from Bayer, grants and personal fees from GSK, personal fees from Merck, from United Therapeutics, personal fees from Acceleron, outside the submitted work., Christophe Guignabert: None declared, Robert Lafyatis Grant/research support from: RL holds research grants from Formation, Elpidera and Kiniksa., Consultant of: R.L. has served as a consultant for Bristol Myers Squibb, Boehringer-Mannheim, Merck, Magenta and Genentech/Roche,
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Zhang P, Tu L, Liu R, Xu X, Bao Z, Xu P, Wang J, Li H, Zhou J, Wang Y. P1.01-106 Clinical Features and Tumor Immune Microenvironment Related to Acquired Resistance to EGFR-TKI in NSCLC Patients with EGFR Mutation. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.821] [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: 11/15/2022]
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Yang LX, Wang M, Xu RH, Tu L, Zhuang C, Zhao WY, Ma XL, Li M, Zhang J, Cao H. [Application of imatinib plasma concentration monitoring in the whole process management of gastrointestinal stromal tumor patients]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:841-847. [PMID: 31550823 DOI: 10.3760/cma.j.issn.1671-0274.2019.09.008] [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 significance of monitoring imatinib mesylate (IM) plasma concentrations in patients with gastrointestinal stromal tumor (GIST). Methods: A retrospective descriptive study was carried out. Inclusion criteria: (1) patients with GIST confirmed by postoperative pathology or puncture pathology receiving maintenance therapy of IM; (2) administration of same dose of IM for at least 4 weeks (achieving steady - state plasma concentration). Patients who had severe organ dysfunction, received IM generics, or received IM simultaneously with other drugs significantly affecting IM pharmacokinetic were excluded. A total of 185 patients at the GIST Clinic of Renji Hospital, Shanghai Jiaotong University School of Medicine from August 2018 to May 2019 were enrolled, including 114 males (61.6%) and 71 females (38.4%) with a median age of 60 years old (range, 30-89 years), and 63 advanced cases. Patients receiving preoperative or postoperative adjuvant therapy were given IM 400 mg QD; patients with KIT exon 9 mutation or with disease progression during IM 400 mg QD treatment were given IM 600 mg QD. If the patient had adverse reactions such as myelosuppression during the medication, IM would be reduced or given BID per day. The peripheral venous blood was collected (22 to 24 hours after the last dose for patients who took IM QD and 2 hours before the first dose per day for those who took IM BID). IM plasma concentration was measured through high performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS). Correlation analysis between IM plasma concentration results and clinical data was performed using linear regression analysis. Results: A total of 241 stable blood samples of IM plasma concentration from 185 patients were finally collected. The IM plasma concentrations were significantly different between the doses of 300 mg/d and 400 mg/d [(942.4±433.5) μg/L vs. (1340.0±500.1) μg/L, t=6.317, P<0.001], and between 400 mg/d and 600 mg/d [(1340.0±500.1) μg/L vs. (2188.0±875.5) μg/L, t=3.557, P=0.004]. Among the blood samples of 57 patients receiving IM 300 mg/d, the IM plasma concentration of the advanced patients was significantly lower than that of the non-advanced patients [(795.6±225.8) μg/L vs. (992.2±484.4) μg/L, t=2.088, P=0.042]. Among the 137 blood samples of patients receiving IM 400 mg/d, the IM plasma concentration was higher in patients aged >60 years than those aged ≤60 years [(1461.0±595.3) μg/L vs. (1240.0±380.9) μg/L, t=2.528, P=0.013] and the IM plasma concentration of cases with diarrhea was significantly lower than that of those without diarrhea [(745.8±249.6) μg/L vs. (1382.0±486.9) μg/L, t=6.794, P<0.001]. Gender, primary location, surgical procedure, mutated gene, mutation type, or time of administration was associated with IM plasma concentration no matter in patients taking IM doses of 400 mg/d or 300 mg/d (all P>0.05). Regression analysis showed that body mass (P=0.004 and P=0.019), body mass index (P=0.016 and P=0.042), and body surface area (P=0.007 and P=0.028) were all negatively correlated with IM plasma concentrations in patients taking IM doses of 300 mg/d and 400 mg/d. Within the 137 patients who received a fixed oral dose of 400 mg/d IM, 17 patients received oral 200 mg BID, whose IM plasma drug concentration was not significantly different compared with that of 120 patients who received 400 mg IM QD [(1488.0±408.3) μg/L vs. (1319.0±509.7) μg/L, t=1.307, P=0.193]. Conclusions: Monitoring IM plasma concentration is significant throughout the whole process of management of GIST patients receiving IM treatment. In particular, regular monitoring IM plasma concentration and developing appropriate treatment strategies can bring better therapeutic benefits for patients with low doses, diarrhea, advanced condition and older age.
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Affiliation(s)
- L X Yang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - M Wang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - R H Xu
- Department of Laboratory, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - L Tu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - C Zhuang
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - W Y Zhao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - X L Ma
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - M Li
- Department of Laboratory, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - J Zhang
- Department of Laboratory, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H Cao
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
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Tu L, Tan CP, Li XT, Dong Q. [Investigation and analysis of thyroid function of medical occupational population in a tertiary-A hospital in Nanjing]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:122-126. [PMID: 30929353 DOI: 10.3760/cma.j.issn.1001-9391.2019.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 evaluate the effect of low-dose of ionizing radiation on thyroid function of medical occupational group with long-term exposure, furthermore, to analyze the relationship between the thyroid hormones and the risk factors, such as exposure length, department and comulative radiation dose. Ultimately, providing the scientific basis for setting the ionizing radiation protection standards. Methods: The population who engaged radiodiagnosis and radiotherapy in a tertiary-A hospital was set up as occupational exposure, and the administrative staffs in a company were considered as control. According to the inclusion and exclusion criteria, 161 medical professionals and 159 administrative staffs as the research object.We figured out the basic information and general condition of the groups by face-to-face questionnaire survey, calculated the annual comulative radiation dose through local center for disease control and prevention, By means of the thyroid hormone testing, we analyzed the thyroid hormone levels with different population, occupational exposure factors. Applying Epidata、Excel in data management. All the data was analyzed by statistical software package Stata12.0. Descriptive statistics, single factor analysis of variance and other statistical methods were used for data analysis. Test standard: α=0.05、P<0.05 statistical significant. Results: Age, sex and seniority were proportionality between exposure and control groups. The dosages of occupational population exposure to ionizing radiation were about 1/10 of national permit value, belonging to low-dose exposure. The T(3), FT(3) level of the exposure group was decreased than the control group (P<0.001). especially the FT(3) level has statitical discrepancy among groups with different exposure length (P<0.05). Conclusion: Long-term exposure to low-dose ionizing radiatiom can induce the thyroid damage of medical occupational population, which should be broader concerned.
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Affiliation(s)
- L Tu
- Nanjing Prevention and Treatment Center for Occupational Diseases, Nanjing 210042, China
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Tu L, Li Z, Feng T, Yu S, Huang R, Li J, Wang W, Zheng Y, Liu J. Access to Imidazolidines via 1,3-Dipolar Cycloadditions of 1,3,5-Triazinanes with Aziridines. J Org Chem 2019; 84:11161-11169. [DOI: 10.1021/acs.joc.9b01959] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Liang Tu
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Zhenghui Li
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Tao Feng
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Shuyan Yu
- College of Pharmacy, Inner Mongolia Medical University, Hohhot 010010, China
| | - Rong Huang
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jing Li
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Wenxuan Wang
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Yongsheng Zheng
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
| | - Jikai Liu
- School of Pharmaceutical Sciences, National Demonstration Center for Experimental Ethnopharmacology Education, South-Central University for Nationalities, Wuhan 430074, China
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Bordenave J, Tu L, Savale L, Huertas A, Humbert M, Guignabert C. [New insights in the pathogenesis of pulmonary arterial hypertension]. Rev Mal Respir 2019; 36:433-437. [PMID: 31010759 DOI: 10.1016/j.rmr.2019.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 11/26/2022]
Abstract
Pulmonary arterial hypertension (PAH) is a severe and incurable cardiopulmonary disorder. Research from the past 10 years illustrates the complex and multifactorial aspects of PAH pathophysiology. Furthermore, latest advances in the field have led to a better understanding of the key components underlying this inadequate accumulation of pulmonary vascular cells within the pulmonary arterial walls, leading to pulmonary vascular remodelling. Among the underlying molecular and cellular mechanisms, pulmonary endothelial dysfunction, alterations of the inter-cell communications within the pulmonary arterial walls as well as defects of the inflammatory component and the loss of BMPRII activity play critical roles in the pathogenesis of the disease.
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Affiliation(s)
- J Bordenave
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - L Tu
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France
| | - L Savale
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France; Service de pneumologie, centre de référence de l'hypertension pulmonaire sévère, DHU Thorax Innovation, hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France
| | - A Huertas
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France; Service de pneumologie, centre de référence de l'hypertension pulmonaire sévère, DHU Thorax Innovation, hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France
| | - M Humbert
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France; Service de pneumologie, centre de référence de l'hypertension pulmonaire sévère, DHU Thorax Innovation, hôpital Bicêtre, AP-HP, Le Kremlin-Bicêtre, France
| | - C Guignabert
- Inserm UMR_S 999, hôpital Marie Lannelongue, 133, avenue de la Résistance, 92350 Le Plessis-Robinson, France; Faculté de Médecine, université Paris-Sud, université Paris-Saclay, 94270 Le Kremlin-Bicêtre, France.
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Tu L, Zeng Z, Wang L, Luo F. [Effect of aspirin on breast cancer stem cells and stemness of breast cancer]. Zhonghua Yi Xue Za Zhi 2019; 98:3598-3602. [PMID: 30486577 DOI: 10.3760/cma.j.issn.0376-2491.2018.44.010] [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: 02/05/2023]
Abstract
Objective: To explore the effect of aspirin on the stemness of breast cancer cells and apoptosis induction of breast cancer stem cells. Methods: The 4T1 cells cultured with stem cell culture medium were screened, and immunofluorescence technique, flow cytometry and tumor-forming experiment in vivo were applied to test stem cell characteristics of the tumor spheres. After dealt with aspirin, the apoptosis rate of 4T1 stem cells was analyzed by flow cytometry. The 4T1 cells were cultured in vitro and treated with aspirin, then flow cytometry analysis was used to detect the expression of aldehydedehy drogenase1 (ALDH1), and the expression of stemness genes was tested by Western blot . Then, after culturing the cells with medium containing basic fibroblast growth factor (bFGF), epidermal growth factor (EGF), B27 and N2, the ability of sphere-forming was observed and recorded by microscopy. In vivo BALB/c mice inoculated with 4T1 stem cells were randomly divided into the control group, 10 mg/kg, 30 mg/kg and 100 mg/kg aspirin groups. After 10 days, the mice were dealt with aspirin or NS for 15 days, then the tumor growth was observed and recorded. Results: The ratio of ALDH1 positive cells was up to 78.55%, and 4T1 tumor sphere had a postive expression of ALDH1 and sex determining region Y-box 2 (SOX2). In vivo tumorigenesis abilities of tumor sphere with 1×10(2) 4T1 stem cells could be 75%, while the ratio of normal cells was zero. The ratio of Aspirin-induced apoptosis of 4T1 stem cells at early stage and and late stage increased from 0.36% to 21.61%, and from 4.21% to 21.38%, respectively. Flow cytometry and Western blot assay results indicated that aspirin could reduce the expression of ALDH1, SOX2, octamer-binding transcription factor 4 (OCT4) and NANOG in 4T1 cells. Sphere-forming experiments results showed that aspirin could inhibit sphere forming ability of breast cancer cells. In vivo, aspirin inhibited the growth of tumors with a dose-dependent manner. Conclusion: Aspirin could induce apoptosis of cancer stem cells and reduce stemness of breast cancer, and thus play a growth-inhibiting action on breast cancer.
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Affiliation(s)
- L Tu
- Department of Lung Cancer Center, State Key Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
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Zheng Y, Tu L, Li N, Huang R, Feng T, Sun H, Li Z, Liu J. Inverse‐Electron‐Demand [4+2]‐Cycloaddition of 1,3,5‐triazinanes: Facile Approaches to Tetrahydroquinazolines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801063] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yongsheng Zheng
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Liang Tu
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Na Li
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Rong Huang
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Tao Feng
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Huan Sun
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Zhenghui Li
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
| | - Jikai Liu
- School of Pharmaceutical SciencesSouth-Central University of Nationalities, Wuhan 430074 People's Republic of China
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Tu L, Wang SL, Dong Q, Song HY, Li XT, Tan CP, Dong X. [Effect of low-dose ionizing radiation exposure on thyroid function in a medical occupational population]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:91-94. [PMID: 29699004 DOI: 10.3760/cma.j.issn.1001-9391.2018.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: We evaluated the effect of low-dose of ionizing radiation on thyroid function of medical occupational group with long-term exposure; furthermore; we analyzed the relationship between the thyroid hormones and the risk factors; such as exposure length; department. Ultimately; providing the scientific basis for setting the ionizing radiation protection standards. Methods: The population who engaged radiodiagnosis and radiotherapy in a tertiary-A hospital were set up as occupational exposure; 724 medical professionals as the research object. We figured out the basic information and general condition of the groups by face-to-face questionnaire survey; By means of the thyroid hormone testing; we analyzed the thyroid hormone levels with different population; occupational exposure factors. Then; obtained the prevalence of thyroid nodules by the thyroid ultrasound. Besides; we used the logistic regression model to analyze the risk factors related to thyroid nodule. Applying Epidata、Excel in data management. All the data was analyzed by statistical software package Stata12.0. Descriptive statistics; single factor analysis of variance and other statistical methods were used for data analysis. Test standard: α=0.05、P<0.05 statistical significant. Results: 1. Based on the work experience; we divided the study population into four groups; such as 1-9; 10-19; 20-29; and>30 years. The difference of the TSH level among the four groups was statistically significant (P<0.05) . 2. The multiple logistic regression showed that sex and seniority were the independent risk factors for the abnormal rate of thyroid nodules. Conclusion: Long-term exposure to low-dose ionizing radiatiom could induce the thyroid damage of medical occupational population; which should be broader concerned.
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Affiliation(s)
- L Tu
- Nanjing Prevention and Treatment Center for Occupational Diseases, Nanjing 210042, China
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Zeng Z, Yan R, Tu L, Wang Y, Chen P, Luo F, Liu L. Comparison of concurrent chemoradiation therapy plus induction chemotherapy with cisplatin, fluorouracil and docetaxel versus gemcitabine and cisplatin in advanced nasopharyngeal carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy287.033] [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: 11/12/2022] Open
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Zheng YS, Tu L, Gao LM, Huang R, Feng T, Sun H, Wang WX, Li ZH, Liu JK. Accessing benzooxadiazepinesviaformal [4 + 3] cycloadditions of aza-o-quinone methides with nitrones. Org Biomol Chem 2018; 16:2639-2642. [DOI: 10.1039/c8ob00201k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Seven membered N-heterocycles were constructed through a formal [4 + 3] cycloaddition of nitrones within situgenerated aza-o-quinone methides.
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Affiliation(s)
- Yong-Sheng Zheng
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Liang Tu
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Li-Mei Gao
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
- Analytical & Measuring Center
| | - Rong Huang
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Tao Feng
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Huan Sun
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Wen-Xuan Wang
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
| | - Zheng-Hui Li
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
- Analytical & Measuring Center
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences
- South-Central University of Nationalities
- Wuhan
- China
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Wang L, Tu L, Wen J. Application of phase-change materials in memory taxonomy. Sci Technol Adv Mater 2017; 18:406-429. [PMID: 28740557 PMCID: PMC5507150 DOI: 10.1080/14686996.2017.1332455] [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] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 06/02/2023]
Abstract
Phase-change materials are suitable for data storage because they exhibit reversible transitions between crystalline and amorphous states that have distinguishable electrical and optical properties. Consequently, these materials find applications in diverse memory devices ranging from conventional optical discs to emerging nanophotonic devices. Current research efforts are mostly devoted to phase-change random access memory, whereas the applications of phase-change materials in other types of memory devices are rarely reported. Here we review the physical principles of phase-change materials and devices aiming to help researchers understand the concept of phase-change memory. We classify phase-change memory devices into phase-change optical disc, phase-change scanning probe memory, phase-change random access memory, and phase-change nanophotonic device, according to their locations in memory hierarchy. For each device type we discuss the physical principles in conjunction with merits and weakness for data storage applications. We also outline state-of-the-art technologies and future prospects.
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Affiliation(s)
- Lei Wang
- School of Information Engineering, Nanchang HangKong University, Nanchang, P.R. China
| | - Liang Tu
- School of Information Engineering, Nanchang HangKong University, Nanchang, P.R. China
| | - Jing Wen
- School of Information Engineering, Nanchang HangKong University, Nanchang, P.R. China
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Xiang XL, Wang A, Tu L, Ke MY, Yang YS, Jiang B, Lin L, Dai N, Zhang SS, Tao L, Xu H, Liang XM, Fang XC, Xia ZW, Wang X, Wu JN, Wang MF, Zhang HJ, Fang YF, Shen C, Wang J, Peng LH, Li WY, Wang ZF, Wang K, Liu N, Hou XH. The motility of esophageal sphincters during liquid and solid bolus swallows: a multicenter normative value study of high-resolution manometry in China. Neurogastroenterol Motil 2017; 29. [PMID: 27665746 DOI: 10.1111/nmo.12914] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 11/26/2015] [Accepted: 07/05/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND It is gradually accepted that solid bolus swallow needs to be added to the procedure of manometry. The motility differences in the upper esophageal sphincter (UES) and lower esophageal sphincter (LES) were not well described. Sierra Scientific Instruments solid-state high-resolution manometry (HRM) system, the most popular HRM system in China, lacks the Chinese normative values for both liquid and solid bolus swallow parameters. METHODS The esophageal HRM data of 88 healthy volunteers were analyzed. The parameters of both sphincters in resting stage were summarized and those during solid and liquid swallows were compared. KEY RESULTS Normative HRM values of sphincter parameters in solid and liquid bolus swallows in China were established. The UES residual pressure of solid bolus swallows was lower than that of liquid bolus (0.3±5.5 mm Hg vs 4.8±5.9 mm Hg, P=.000). The time parameters of UES relaxation between two types of bolus swallows were similar. In solid bolus swallows, the intrabolus pressure (IBP) (13.8±5.1 mm Hg vs 10.9±5.7 mm Hg, P=.000) and LES relaxation time (11.0±2.1 seconds vs 8.7±1.3 seconds, P=.000) were higher. The 4-second integrated relaxation pressure between both bolus swallows was similar. CONCLUSIONS & INFERENCES The function of the UES and LES between solid and liquid bolus swallows is different. Chinese HRM parameters are different from the Chicago Classification (http://www.chictr.org.cn, Number ChiCTR-EOC-15007147).
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Affiliation(s)
- X-L Xiang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - A Wang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - L Tu
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - M-Y Ke
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y-S Yang
- Division of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - B Jiang
- Division of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - L Lin
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - N Dai
- Division of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - S-S Zhang
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - L Tao
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - H Xu
- Division of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - X-M Liang
- Division of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - X-C Fang
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z-W Xia
- Division of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - X Wang
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Disease, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J-N Wu
- Division of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - M-F Wang
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - H-J Zhang
- Division of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Y-F Fang
- Division of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - C Shen
- Division of Gastroenterology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - J Wang
- Division of Gastroenterology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - L-H Peng
- Division of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China
| | - W-Y Li
- Division of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Z-F Wang
- Division of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - K Wang
- Division of Gastroenterology, Peking University Third Hospital, Beijing, China
| | - N Liu
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Disease, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - X-H Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Sun L, Tu L, Wei M. 466P Gefitinib retreatment beyond progression in advanced NSCLC patients with sensitive EGFR mutations. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw594.030] [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: 11/13/2022] Open
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Zhang Y, Gauthier SA, Gupta A, Tu L, Comunale J, Chiang GCY, Chen W, Salustri CA, Zhu W, Wang Y. Magnetic Susceptibility from Quantitative Susceptibility Mapping Can Differentiate New Enhancing from Nonenhancing Multiple Sclerosis Lesions without Gadolinium Injection. AJNR Am J Neuroradiol 2016; 37:1794-1799. [PMID: 27365331 DOI: 10.3174/ajnr.a4856] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 04/15/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND PURPOSE Magnetic susceptibility values of multiple sclerosis lesions increase as they change from gadolinium-enhancing to nonenhancing. Can susceptibility values measured on quantitative susceptibility mapping without gadolinium injection be used to identify the status of lesion enhancement in surveillance MR imaging used to monitor patients with MS? MATERIALS AND METHODS In patients who had prior MR imaging and quantitative susceptibility mapping in a current MR imaging, new T2-weighted lesions were evaluated for enhancement on conventional T1-weighted imaging with gadolinium, and their susceptibility values were measured on quantitative susceptibility mapping. Receiver operating characteristic analysis was used to assess the diagnostic accuracy of using quantitative susceptibility mapping in distinguishing new gadolinium-enhancing from new nonenhancing lesions. A generalized estimating equation was used to assess differences in susceptibility values among lesion types. RESULTS In 54 patients, we identified 86 of 133 new lesions that were gadolinium-enhancing and had relative susceptibility values significantly lower than those of nonenhancing lesions (β = -17.2; 95% CI, -20.2 to -14.2; P < .0001). Using susceptibility values to discriminate enhancing from nonenhancing lesions, we performed receiver operating characteristic analysis and found that the area under the curve was 0.95 (95% CI, 0.92-0.99). Sensitivity was measured at 88.4%, and specificity, at 91.5%, with a cutoff value of 11.2 parts per billion for quantitative susceptibility mapping-measured susceptibility. CONCLUSIONS During routine MR imaging monitoring to detect new MS lesion activity, quantitative susceptibility mapping can be used without gadolinium injection for accurate identification of the BBB leakage status in new T2WI lesions.
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Affiliation(s)
- Y Zhang
- From the Department of Radiology (Y.Z., W.C., W.Z.), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Radiology (Y.Z., C.A.S., Y.W.), Weill Cornell Medical College, New York, New York
| | | | - A Gupta
- Radiology (A.G., J.C., G.C.-Y.C.), Weill Cornell Medical College, New York-Presbyterian Hospital, New York, New York
| | - L Tu
- School of Applied and Engineering Physics (L.T.)
| | - J Comunale
- Radiology (A.G., J.C., G.C.-Y.C.), Weill Cornell Medical College, New York-Presbyterian Hospital, New York, New York
| | - G C-Y Chiang
- Radiology (A.G., J.C., G.C.-Y.C.), Weill Cornell Medical College, New York-Presbyterian Hospital, New York, New York
| | - W Chen
- From the Department of Radiology (Y.Z., W.C., W.Z.), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - C A Salustri
- Department of Radiology (Y.Z., C.A.S., Y.W.), Weill Cornell Medical College, New York, New York.,Department of Biomedical Engineering (Y.W.), Cornell University, Ithaca, New York
| | - W Zhu
- From the Department of Radiology (Y.Z., W.C., W.Z.), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Wang
- Department of Radiology (Y.Z., C.A.S., Y.W.), Weill Cornell Medical College, New York, New York .,Department of Biomedical Engineering (Y.W.), Cornell University, Ithaca, New York
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Fan M, Cao S, Tu L, Wei Q, Yuan R, Gu J. SAT0406 Efficacy and Safety of Loxoprofen Hydrogel Patch versus Loxoprofen Tablet in Patients with Ankylosing Spondylitis: A Randomized Controlled Trial. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.6172] [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: 11/04/2022]
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Zheng X, Li Q, Tu L, Lv Q, Yang M, Zhang Y, Lin Z, Liao Z, Cao S, Wei Q, Qi J, Yuan R, Gu J. AB0721 The Clinical Characteristics and Associated Factors of Chinese Ankylosing Spondylitis Patients. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4724] [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: 11/04/2022]
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Abstract
Here, we performed a case-control study to investigate the role of miR-146a, miR-149, and miR-196a2 polymorphisms in the development of gastric cancer using a hospital-based case-control design. A total of 186 gastric cancer patients and 186 control subjects were enrolled from Ren Ji Hospital between January 2012 and October 2014. MicroRNAs miR-146a, miR-149, and miR-196a2 were genotyped by polymerase chain reaction coupled with restriction fragment length polymorphism. Univariate logistic regression analysis revealed that patients with gastric cancer were more likely to be infected with Helicobacter pylori [odds ratio (OR) = 1.68, 95% confidence interval (CI) = 1.07-1.96]. Conditional multiple logistic regression analysis revealed that the TT genotype of miR-196a2 was associated with an increased risk of gastric cancer compared to the CC genotype (OR = 2.40; 95%CI = 1.26-4.61). Moreover, patients carrying both the TC and TT genotypes of miR-196a2 were correlated with an elevated risk of gastric cancer compared to those expressing the CC genotype alone (OR = 1.67, 95%CI = 1.01-2.75; P = 0.03). In conclusion, the results of our study indicated that the miR-196a2 polymorphism was associated with gastric cancer development.
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Affiliation(s)
- J Y Gu
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - L Tu
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wang Y, Tu L, Li Y, Chen D, Wang S. Notoginsenoside R1 Protects against Neonatal Cerebral Hypoxic-Ischemic Injury through Estrogen Receptor-Dependent Activation of Endoplasmic Reticulum Stress Pathways. ACTA ACUST UNITED AC 2016; 357:591-605. [DOI: 10.1124/jpet.115.230359] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 02/17/2016] [Indexed: 12/14/2022]
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Tu L, He Y, Shan C, Wu Z. Preparation of Microencapsulated Bacillus subtilis SL-13 Seed Coating Agents and Their Effects on the Growth of Cotton Seedlings. Biomed Res Int 2016; 2016:3251357. [PMID: 26885507 PMCID: PMC4738727 DOI: 10.1155/2016/3251357] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 12/17/2015] [Indexed: 11/28/2022]
Abstract
Inoculation of the bacterial cells of microbial seed coating agents (SCAs) into the environment may result in limited survival and colonization. Therefore, the application efficacy of an encapsulated microbial seed coating agent (ESCA) was investigated on potted cotton plants; the agent was prepared with polyvinyl alcohol, sodium dodecyl sulfate, bentonite, and microencapsulated Bacillus subtilis SL-13. Scanning electron micrography revealed that the microcapsules were attached to ESCA membranes. The ESCA film was uniform, bubble-free, and easy to peel. The bacterial contents of seeds coated with each ESCA treatment reached 10(6) cfu/seed. Results indicated that the germination rate of cotton seeds treated with ESCA4 (1.0% (w/v) sodium alginate, 4.0% polyvinyl alcohol, 1.0% sodium dodecyl sulfate, 0.6% acacia, 0.5% bentonite, and 10% (v/v) microcapsules) increased by 28.74%. Other growth factors of the cotton seedlings, such as plant height, root length, whole plant fresh weight, and whole plant dry weight, increased by 52.70%, 25.13%, 46.47%, and 33.21%, respectively. Further analysis demonstrated that the peroxidase and superoxide dismutase activities of cotton seedlings improved, whereas their malondialdehyde contents decreased. Therefore, the ESCA can efficiently improve seed germination, root length, and growth. The proposed ESCA exhibits great potential as an alternative to traditional SCA in future agricultural applications.
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Affiliation(s)
- Liang Tu
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Yanhui He
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Zhansheng Wu
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
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Tu L, He Y, Yang H, Wu Z, Yi L. Preparation and characterization of alginate–gelatin microencapsulatedBacillus subtilisSL-13 by emulsification/internal gelation. Journal of Biomaterials Science, Polymer Edition 2015; 26:735-49. [DOI: 10.1080/09205063.2015.1056075] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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