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Yang J, Deng L, Jing M, Xu M, Liu X, Li S, Zhang L, Xi H, Yuan L, Zhou J. Added value of spectral computed tomography quantitative parameters for differentiating tuberculosis-associated fibrosing mediastinitis from endobronchial lung cancer: initial results. Clin Radiol 2024:S0009-9260(24)00132-6. [PMID: 38658213 DOI: 10.1016/j.crad.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVE The objective of this study was to explore the added value of spectral computed tomography (CT) parameters to conventional CT features for differentiating tuberculosis-associated fibrosing mediastinitis (TB-associated FM) from endobronchial lung cancer (EBLC). METHODS Chest spectral CT enhancement images from 109 patients with atelectasis were analyzed retrospectively. These patients were divided into two distinct categories: the TB-associated FM group (n = 77) and the EBLC group (n = 32), based on bronchoscopy and/or pathological findings. The selection of spectrum parameters was optimized with the least absolute shrinkage and selection operator regression analysis. The relationship between the spectrum parameters and conventional parameters was explored using Pearson's correlation. Multivariate logistic regression analysis was used to build spectrum model. The spectrum parameters in the spectrum model were replaced with their corresponding conventional parameters to build the conventional model. Diagnostic performances were evaluated using receiver operating characteristic curve analyses. RESULTS There was a moderate correlation between the parameters ㏒(L-AEFNIC) - ㏒(L-AEFC) (r= 0.419; p< 0.0001), ㏒(O-AEF40KeV) - ㏒(O-AEFC) (r= 0.475; p< 0.0001), [L-A-hydroxyapatite {HAP}(I)] - (L-U-CT) (r= 0.604; p< 0.0001), {arterial enhancement fraction (AEF) derived from normalized iodine concentration (NIC) of lymph node (L-AEFNIC), AEF derived from CT40KeV of bronchial obstruction (O-AEF40KeV), arterial-phase Hydroxyapatite (Iodine) concentration of lymph node [L-A-HAP(I)], AEF derived from conventional CT (AEFC), unenhanced CT value (U-CT)}. Spectrum model could improve diagnostic performances compared to conventional model (area under curve: 0.965 vs 0.916, p= 0.038). CONCLUSION There was a moderate correlation between spectrum parameters and conventional parameters. Integrating conventional CT features with spectrum parameters could further improve the ability in differentiating TB-associated FM from EBLC.
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Affiliation(s)
- J Yang
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - L Deng
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - M Jing
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - M Xu
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - X Liu
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - S Li
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - L Zhang
- Zhang Ye People's Hospital Affiliated to Hexi University, Zhangye, 73400, China.
| | - H Xi
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - L Yuan
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
| | - J Zhou
- Department of Radiology, Lanzhou University Second Hospital, Cuiyingmen No.82, Chengguan District, Lanzhou, 730030, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, China.
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Wang X, Liu L, Jiang X, Saredy J, Xi H, Cueto R, Sigler D, Khan M, Wu S, Ji Y, Snyder NW, Hu W, Yang X, Wang H. Identification of methylation-regulated genes modulating microglial phagocytosis in hyperhomocysteinemia-exacerbated Alzheimer's disease. Alzheimers Res Ther 2023; 15:164. [PMID: 37789414 PMCID: PMC10546779 DOI: 10.1186/s13195-023-01311-9] [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: 08/10/2023] [Accepted: 09/20/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Hyperhomocysteinemia (HHcy) has been linked to development of Alzheimer's disease (AD) neuropathologically characterized by the accumulation of amyloid β (Aβ). Microglia (MG) play a crucial role in uptake of Aβ fibrils, and its dysfunction worsens AD. However, the effect of HHcy on MG Aβ phagocytosis remains unstudied. METHODS We isolated MG from the cerebrum of HHcy mice with genetic cystathionine-β-synthase deficiency (Cbs-/-) and performed bulk RNA-seq. We performed meta-analysis over transcriptomes of Cbs-/- mouse MG, human and mouse AD MG, MG Aβ phagocytosis model, human AD methylome, and GWAS AD genes. RESULTS HHcy and hypomethylation conditions were identified in Cbs-/- mice. Through Cbs-/- MG transcriptome analysis, 353 MG DEGs were identified. Phagosome formation and integrin signaling pathways were found suppressed in Cbs-/- MG. By analyzing MG transcriptomes from 4 AD patient and 7 mouse AD datasets, 409 human and 777 mouse AD MG DEGs were identified, of which 37 were found common in both species. Through further combinatory analysis with transcriptome from MG Aβ phagocytosis model, we identified 130 functional-validated Aβ phagocytic AD MG DEGs (20 in human AD, 110 in mouse AD), which reflected a compensatory activation of Aβ phagocytosis. Interestingly, we identified 14 human Aβ phagocytic AD MG DEGs which represented impaired MG Aβ phagocytosis in human AD. Finally, through a cascade of meta-analysis of transcriptome of AD MG, functional phagocytosis, HHcy MG, and human AD brain methylome dataset, we identified 5 HHcy-suppressed phagocytic AD MG DEGs (Flt1, Calponin 3, Igf1, Cacna2d4, and Celsr) which were reported to regulate MG/MΦ migration and Aβ phagocytosis. CONCLUSIONS We established molecular signatures for a compensatory response of Aβ phagocytosis activation in human and mouse AD MG and impaired Aβ phagocytosis in human AD MG. Our discoveries suggested that hypomethylation may modulate HHcy-suppressed MG Aβ phagocytosis in AD.
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Affiliation(s)
- Xianwei Wang
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Lu Liu
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Xiaohua Jiang
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Jason Saredy
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Hang Xi
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Ramon Cueto
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Danni Sigler
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Mohsin Khan
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Sheng Wu
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Yong Ji
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Nathaniel W Snyder
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Wenhui Hu
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA
| | - Hong Wang
- Center for Metabolic Disease Research, Department of Cardiovascular Science, Lewis Kats School of Medicine, Temple University, MERB, Room 1060, 3500 N. Broad Street, Philadelphia, USA.
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Jing M, Xi H, Zhu H, Zhang B, Deng L, Han T, Zhang Y, Zhou J. Correlation of pericoronary adipose tissue CT attenuation values of plaques and periplaques with plaque characteristics. Clin Radiol 2023:S0009-9260(23)00172-1. [PMID: 37225572 DOI: 10.1016/j.crad.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 04/19/2023] [Accepted: 04/22/2023] [Indexed: 05/26/2023]
Abstract
AIM To investigate the relationship between different plaque characteristics and pericoronary adipose tissue (PCAT) computed tomography (CT) attenuation values for plaques and periplaques. MATERIALS AND METHODS The data from 188 eligible patients with stable coronary heart disease (280 lesions) who underwent coronary CT angiography between March 2021 and November 2021 were collected retrospectively. All PCAT CT attenuation values of plaques and periplaques (the area within 5 and 10 mm proximal and distal to the plaque) were calculated, and multiple linear regression was used to assess their correlation with different plaque characteristics. RESULTS PCAT CT attenuation of plaques and periplaques was higher in non-calcified plaques (-73.38 ± 10.41 HU, -76.77 ± 10.86 HU, 79.33 ± 11.13 HU, -75.67 ± 11.24 HU, -78.63 ± 12.09 HU) and mixed plaques (-76.83 ± 8.11 HU, -79 [-85, -68.5] HU, -78.55 ± 11 HU, -78.76 ± 9.9 HU, -78.79 ± 11.06 HU) than in calcified plaques (-86.96 ± 10 HU, -84 [-92, -76] HU, -84.14 ± 11.08 HU, -84.91 ± 11.41 HU, -84.59 ± 11.69 HU; all p<0.05) and higher in distal segment plaques than in proximal segment plaques (all p<0.05). Plaque PCAT CT attenuation was lower in plaques with minimal stenosis than in plaques with mild or moderate stenosis (p<0.05). The significant determinants of PCAT CT attenuation values of plaques and periplaques were non-calcified plaques, mixed plaques, and plaques located in the distal segment (all p<0.05). CONCLUSIONS PCAT CT attenuation values in both plaques and periplaques were related to plaque type and location.
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Affiliation(s)
- M Jing
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - H Xi
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - H Zhu
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - B Zhang
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - L Deng
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - T Han
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - Y Zhang
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China
| | - J Zhou
- Department of Radiology, Lanzhou University Second Hospital, Lanzhou, China; Second Clinical School, Lanzhou University, Lanzhou, China; Key Laboratory of Medical Imaging of Gansu Province, Lanzhou, China; Gansu International Scientific and Technological Cooperation Base of Medical Imaging Artificial Intelligence, Lanzhou, China.
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Zhang B, Lu Y, Li L, Gao Y, Liang W, Xi H, Wang X, Zhang K, Chen L. [Establishment and validation of a nomogram for predicting prognosis of gastric neuroendocrine neoplasms based on data from 490 cases in a single center]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:183-190. [PMID: 36946036 PMCID: PMC10034550 DOI: 10.12122/j.issn.1673-4254.2023.02.04] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To develop and validate a nomogram for predicting outcomes of patients with gastric neuroendocrine neoplasms (G-NENs). METHODS We retrospectively collected the clinical data from 490 patients with the diagnosis of G-NEN at our medical center from 2000 to 2021. Log-rank test was used to analyze the overall survival (OS) of the patients. The independent risk factors affecting the prognosis of G-NEN were identified by Cox regression analysis to construct the prognostic nomogram, whose performance was evaluated using the C-index, receiver-operating characteristic (ROC) curve, area under the ROC curve (AUC), calibration curve, DCA, and AUDC. RESULTS Among the 490 G-NEN patients (mean age of 58.6±10.92 years, including 346 male and 144 female patients), 130 (26.5%) had NET G1, 54 (11.0%) had NET G2, 206 (42.0%) had NEC, and 100 (20.5%) had MiNEN. None of the patients had NET G3. The numbers of patients in stage Ⅰ-Ⅳ were 222 (45.3%), 75 (15.3%), 130 (26.5%), and 63 (12.9%), respectively. Univariate and multivariate analyses identified age, pathological grade, tumor location, depth of invasion, lymph node metastasis, distant metastasis, and F-NLR as independent risk factors affecting the survival of the patients (P < 0.05). The C-index of the prognostic nomogram was 0.829 (95% CI: 0.800-0.858), and its AUC for predicting 1-, 3- and 5-year OS were 0.883, 0.895 and 0.944, respectively. The calibration curve confirmed a good consistency between the model prediction results and the actual observations. For predicting 1-year, 3-year and 5-year OS, the TNM staging system and the nomogram had AUC of 0.033 vs 0.0218, 0.191 vs 0.148, and 0.248 vs 0.197, respectively, suggesting higher net benefit and better clinical utility of the nomogram. CONCLUSION The prognostic nomogram established in this study has good predictive performance and clinical value to facilitate prognostic evaluation of individual patients with G-NEN.
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Affiliation(s)
- B Zhang
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Lu
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - L Li
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Y Gao
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - W Liang
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - H Xi
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - X Wang
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - K Zhang
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - L Chen
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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Xu K, Shao Y, Saaoud F, Gillespie A, Drummer C, Liu L, Lu Y, Sun Y, Xi H, Tükel Ç, Pratico D, Qin X, Sun J, Choi ET, Jiang X, Wang H, Yang X. Novel Knowledge-Based Transcriptomic Profiling of Lipid Lysophosphatidylinositol-Induced Endothelial Cell Activation. Front Cardiovasc Med 2021; 8:773473. [PMID: 34912867 PMCID: PMC8668339 DOI: 10.3389/fcvm.2021.773473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 10/04/2021] [Indexed: 12/14/2022] Open
Abstract
To determine whether pro-inflammatory lipid lysophosphatidylinositols (LPIs) upregulate the expressions of membrane proteins for adhesion/signaling and secretory proteins in human aortic endothelial cell (HAEC) activation, we developed an EC biology knowledge-based transcriptomic formula to profile RNA-Seq data panoramically. We made the following primary findings: first, G protein-coupled receptor 55 (GPR55), the LPI receptor, is expressed in the endothelium of both human and mouse aortas, and is significantly upregulated in hyperlipidemia; second, LPIs upregulate 43 clusters of differentiation (CD) in HAECs, promoting EC activation, innate immune trans-differentiation, and immune/inflammatory responses; 72.1% of LPI-upregulated CDs are not induced in influenza virus-, MERS-CoV virus- and herpes virus-infected human endothelial cells, which hinted the specificity of LPIs in HAEC activation; third, LPIs upregulate six types of 640 secretomic genes (SGs), namely, 216 canonical SGs, 60 caspase-1-gasdermin D (GSDMD) SGs, 117 caspase-4/11-GSDMD SGs, 40 exosome SGs, 179 Human Protein Atlas (HPA)-cytokines, and 28 HPA-chemokines, which make HAECs a large secretory organ for inflammation/immune responses and other functions; fourth, LPIs activate transcriptomic remodeling by upregulating 172 transcription factors (TFs), namely, pro-inflammatory factors NR4A3, FOS, KLF3, and HIF1A; fifth, LPIs upregulate 152 nuclear DNA-encoded mitochondrial (mitoCarta) genes, which alter mitochondrial mechanisms and functions, such as mitochondrial organization, respiration, translation, and transport; sixth, LPIs activate reactive oxygen species (ROS) mechanism by upregulating 18 ROS regulators; finally, utilizing the Cytoscape software, we found that three mechanisms, namely, LPI-upregulated TFs, mitoCarta genes, and ROS regulators, are integrated to promote HAEC activation. Our results provide novel insights into aortic EC activation, formulate an EC biology knowledge-based transcriptomic profile strategy, and identify new targets for the development of therapeutics for cardiovascular diseases, inflammatory conditions, immune diseases, organ transplantation, aging, and cancers.
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Affiliation(s)
- Keman Xu
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Ying Shao
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Fatma Saaoud
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Aria Gillespie
- Neural Sciences, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Charles Drummer
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Lu Liu
- Departments of Cardiovascular Sciences, Metabolic Disease Research, Thrombosis Research, Philadelphia, PA, United States
| | - Yifan Lu
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Yu Sun
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States
| | - Hang Xi
- Departments of Cardiovascular Sciences, Metabolic Disease Research, Thrombosis Research, Philadelphia, PA, United States
| | - Çagla Tükel
- Center for Microbiology & Immunology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Domenico Pratico
- Alzheimer's Center, Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Xuebin Qin
- National Primate Research Center, Tulane University, Covington, LA, United States
| | - Jianxin Sun
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| | - Eric T Choi
- Surgery (Division of Vascular and Endovascular Surgery), Temple University Lewis Katz School of Medicine, Philadelphia, PA, United States
| | - Xiaohua Jiang
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States.,Departments of Cardiovascular Sciences, Metabolic Disease Research, Thrombosis Research, Philadelphia, PA, United States
| | - Hong Wang
- Departments of Cardiovascular Sciences, Metabolic Disease Research, Thrombosis Research, Philadelphia, PA, United States
| | - Xiaofeng Yang
- Centers of Cardiovascular Research, Inflammation and Lung Research, Philadelphia, PA, United States.,Departments of Cardiovascular Sciences, Metabolic Disease Research, Thrombosis Research, Philadelphia, PA, United States
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Hammond E, Liu Y, Xu F, Liu G, Xi H, Xue L, Bai X, Liao H, Xue S, Zhao S, Zhang A, Kemper J, Afnan M, Mol B, Morbeck D. P–138 When is low quality really low? Should we transfer low-grade blastocysts? Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
What is the live birth rate after single, low-grade blastocyst (LGB) transfer?
Summary answer
The live birth rate for LGBs is 28%, ranging between 15–31% for the different inner cell mass (ICM) and trophectoderm (TE) subgroups of LGBs.
What is known already
Live birth rates following LGB transfer are varied and have been reported to be in the range of 5–39%. However, these estimates are inaccurate as studies investigating live birth rates following LGB transfer are inherently limited by sample size (n = 10–440 for LGB transfers) due to LGBs being ranked last for transfer. Further, these studies are heterogenous with varied LGB definitions and design. Collating LGB live birth data from multiple clinics is warranted to obtain sufficient numbers of LGB transfers to establish reliable live birth rates, and to allow for delineation of different LGB subgroups, including blastocyst age and female age.
Study design, size, duration
We performed a multicentre, multinational retrospective cohort study in 9 IVF centres in China and New Zealand from 2012 to 2019. We studied the outcome of 6966 single blastocyst transfer cycles on days 5–7 (fresh and frozen) according to blastocyst grade, including 875 transfers from LGBs (<3bb, this being the threshold typically applied to LGB studies). Blastocysts with expansion stage 1 or 2 (early blastocysts) were excluded.
Participants/materials, setting, methods
The main outcome measured was live birth rate. Blastocysts were grouped according to quality grade: good-grade blastocysts (GGBs; n = 3849, aa, ab and ba), moderate-grade blastocysts (MGBs; n = 2242, bb) and LGBs (n = 875, ac, ca, bc, cb and cc) and live birth rates compared using the Pearson Chi-squared test. A logistic regression analysis explored the relationship between blastocyst grade and live birth after adjustment for the confounders: clinic, female age, expansion stage, and blastocyst age.
Main results and the role of chance
The live birth rates for GGBs, MGBs and LGBs were 45%, 36% and 28% respectively (p < 0.0001). Within the LGB group, the highest live birth rates were for grade c TE (30%) and the lowest were for grade c ICM (19%). The lowest combined grade (cc) maintained a 15% live birth rate (n = 7/48). After accounting for confounding factors, including female age and blastocyst characteristics, the odds of live birth were 2.33 (95% CI = 1.88–2.89) for GGBs compared to LGBs and 1.56 (95% CI = 1.28–1.92) for MGBs compared to LGBs following fresh and frozen blastocyst transfers (p < 0.0001, odds ratios confirmed in exclusively frozen blastocyst transfer cycles). When stratified by individual ICM and TE grade, the odds of live birth according to ICM grade were 1.31 (a versus b; 95% CI = 1.15–1.48), 2.82 (a versus c; 95% CI = 1.91–4.18) and 2.16 (b versus c; 95% CI = 1.48–3.16; all p < 0.0001). The odds of live birth according to TE grade were 1.33 (a versus b; 95% CI = 1.17–1.50, p < 0.0001), 1.85 (a versus c; 95% CI = 1.45–2.34, p < 0.0001) and 1.39 (b versus c; 95% CI = 1.12–1.73, p = 0.0024).
Limitations, reasons for caution
Despite the large multicentre design of the study, analyses of transfers occurring within the smallest subsets of the LGB group were limited by sample size. The study was not randomised and had a retrospective character.
Wider implications of the findings: LGBs maintain satisfactory live birth rates (averaging 28%) in the general IVF population. Even those in the lowest grading tier maintain modest live birth rates (15%; cc). It is recommended that LGBs not be universally discarded, and instead considered for subsequent frozen embryo transfer to maximize cumulative live birth rates.
Trial registration number
Not applicable
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Affiliation(s)
- E Hammond
- Fertility Associates, Embryology, Auckland, New Zealand
| | - Y Liu
- Monash IVF Group- Southport- Australia, Embryology, Queensland, Australia
| | - F Xu
- Tianjin First Central Hospital, Reproductive Medicine Center, Tianjin, China
| | - G Liu
- Tianjin Aiwei Hospital, Reproductive Center, Tianjin, China
| | - H Xi
- The second affiliated hospital of WenZhou Medical University, Department of Obstetrics and Gynecology, Wenzhou, China
| | - L Xue
- People’s Hospital of Guangxi Zhuang Autonomous Region, Reproductive Medical and Genetic Center, Nanning, China
| | - X Bai
- General Hospital of Tianjin Medical University, Department of Obstetrics and Gynecology, Tianjin, China
| | - H Liao
- The second affiliated hospital of South China University, Reproductive Medicine Center, Hengyang, China
| | - S Xue
- Shanghai East Hospital, Department of Assisted Reproduction, Shanghai, China
| | - S Zhao
- Zaozhuang Maternal and Child Health Care, Reproductive Center, Zaozhuang, China
| | - A Zhang
- Reproductive Medical Center of Ruijin Hospital- School of Medicine- Shanghai Jiao Tong University, Reproductive Medical Center, Shanghai, China
| | - J Kemper
- Monash Women’s- Monash Health- Clayton- Australia, Department of obstetrics and gynaecology, Melbourne, Australia
| | - M Afnan
- Qingdao United Family Hospital- Qingdao- China, Obstetrics and Gynecology, Qingdao, China
| | - B Mol
- Monash Women’s- Monash Health- Clayton- Australia, Obstetrics & Gynaecology Monash Health, Melbourne, Australia
| | - D Morbeck
- Fertility Associates, Embryology, Auckland, New Zealand
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7
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Xi H, Li LJ, Sun LY. [Holistic view of surgery based on membrane anatomy for gastrointestinal tumor]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:560-566. [PMID: 34289537 DOI: 10.3760/cma.j.cn.441530-20210413-00161] [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
The mesentery is a continuous unity and the operation of digestive carcinoma is the process of mesenteric resection. This paper attempts to simplify the formation process of all kinds of fusion fascia in the process of digestive tract embryogenesis, and to illuminate the continuity of fusion fascia with a holistic concept. This is helpful for beginners to reversely dissect the fusion fascia and maintain the correct surgical plane during operation, and to achieve the purpose of complete mesenteric resection.
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Affiliation(s)
- H Xi
- Department of Oncology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin 150000, China
| | - L J Li
- Department of Oncology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin 150000, China
| | - L Y Sun
- Department of Oncology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin 150000, China
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8
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Harn H, Wang S, Lai Y, Van Handel B, Liang Y, Tsai S, Schiessl IM, Sarkar A, Xi H, Hughes M, Kaemmer S, Tang M, Peti-Peterdi J, Pyle A, Woolley T, Evseenko D, Jiang T, Chuong C. 609 Symmetry breaking of tissue mechanics in wound induced hair follicle regeneration. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.638] [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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9
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Su Y, Lv JL, Yu M, Ma ZH, Xi H, Kou CL, He ZC, Shen AL. Long-term decomposed straw return positively affects the soil microbial community. J Appl Microbiol 2019; 128:138-150. [PMID: 31495045 DOI: 10.1111/jam.14435] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [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: 07/21/2018] [Revised: 07/24/2019] [Accepted: 08/21/2019] [Indexed: 01/12/2023]
Abstract
AIMS In order to understand the response of soil microbial communities to the long-term of decomposed straw return, the modifications of soil microbial community structure and composition induced by more than 10 years of fresh and decomposed straw return was investigated and the key environmental factors were analysed. METHODS AND RESULTS Phospholipid fatty acid analysis and high-through sequencing technique were applied to analyse the structure and composition of the soil microbial communities. Compared with fresh straw, returning decomposed straw increased the relative abundance of bacteria and fungi by 1·9 and 7·7% at a rate of ~3750 kg ha-1 , and increased by 23·1 and 5·7%, at a rate of ~7500 kg ha-1 respectively. The relative abundance of the bacteria related to soil nitrification increased, but the ones related to soil denitrification decreased with decomposed straw return, which led to higher total nitrogen contents in soils. Moreover, returning decomposed straw reduced pathogenic fungal populations (genus of Alternara), which had significantly positive correlation with soil electric conductivity. It indicated that the long-term of decomposed straw return might have lower risk of soil-borne disease mainly for the reasonable soil salinity. CONCLUSIONS Long-term of decomposed straw return could provide suitable nutrient and salinity for healthier development of soil microbial community, both in abundance and structure, compared with fresh straw return. SIGNIFICANCE AND IMPACT OF THE STUDY The results of the study helps to better understand how the microbial community modifications induced by decomposed straw return benefit on soil health. The obtained key factors impacting soil microbial community variations is meaningful in soil health management under conditions of straw return.
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Affiliation(s)
- Y Su
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - J L Lv
- Institute of Plant Nutrient, Environment and Resource, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - M Yu
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Z H Ma
- Institute of Plant Nutrient, Environment and Resource, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - H Xi
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - C L Kou
- Institute of Plant Nutrient, Environment and Resource, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China
| | - Z C He
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - A L Shen
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
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10
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Zhang Y, Gordon SM, Xi H, Choi S, Paz MA, Sun R, Yang W, Saredy J, Khan M, Remaley AT, Wang JF, Yang X, Wang H. HDL subclass proteomic analysis and functional implication of protein dynamic change during HDL maturation. Redox Biol 2019; 24:101222. [PMID: 31153037 PMCID: PMC6541906 DOI: 10.1016/j.redox.2019.101222] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/09/2019] [Accepted: 05/14/2019] [Indexed: 01/27/2023] Open
Abstract
Recent clinical trials reported that increasing high-density lipoprotein-cholesterol (HDL-C) levels does not improve cardiovascular outcomes. We hypothesize that HDL proteome dynamics determine HDL cardioprotective functions. In this study, we characterized proteome profiles in HDL subclasses and established their functional connection. Mouse plasma was fractionized by fast protein liquid chromatography, examined for protein, cholesterial, phospholipid and trigliceride content. Small, medium and large (S/M/L)-HDL subclasseses were collected for proteomic analysis by mass spectrometry. Fifty-one HDL proteins (39 in S-HDL, 27 in M-HDL and 29 in L-HDL) were identified and grouped into 4 functional categories (lipid metabolism, immune response, coagulation, and others). Eleven HDL common proteins were identified in all HDL subclasses. Sixteen, 3 and 7 proteins were found only in S-HDL, M-HDL and L-HDL, respectively. We established HDL protein dynamic distribution in S/M/L-HDL and developed a model of protein composition change during HDL maturation. We found that cholesterol efflux and immune response are essential functions for all HDL particles, and amino acid metabolism is a special function of S-HDL, whereas anti-coagulation is special for M-HDL. Pon1 is recruited into M/L-HDL to provide its antioxidative function. ApoE is incorporated into L-HDL to optimize its cholesterial clearance function. Next, we acquired HDL proteome data from Pubmed and identified 12 replicated proteins in human and mouse HDL particle. Finally, we extracted 3 shared top moleccular pathways (LXR/RXR, FXR/RXR and acute phase response) for all HDL particles and 5 top disease/bio-functions differentially related to S/M/L-HDL subclasses, and presented one top net works for each HDL subclass. We conclude that beside their essencial functions of cholesterol efflux and immune response, HDL aquired antioxidative and cholesterol clearance functions by recruiting Pon1 and ApoE during HDL maturation.
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Affiliation(s)
- Yuling Zhang
- Cardiovascular Medicine Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA; Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Guangzhou, China
| | - Scott M Gordon
- Cardiopulmonary Branch, NHLBI, National Institutes of Health, Building 10 Room 2C433, Bethesda, MD, 20892, USA; Saha Cardiovascular Research Center, University of Kentucky, Lexington, KY, 40536, USA
| | - Hang Xi
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Seungbum Choi
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Merlin Abner Paz
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Runlu Sun
- Cardiovascular Medicine Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Guangzhou, China
| | - William Yang
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Jason Saredy
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Mohsin Khan
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Alan Thomas Remaley
- Cardiopulmonary Branch, NHLBI, National Institutes of Health, Building 10 Room 2C433, Bethesda, MD, 20892, USA
| | - Jing-Feng Wang
- Cardiovascular Medicine Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China; Guangdong Province Key Laboratory of Arrhythmia and Electrophysiology, Guangzhou, China
| | - Xiaofeng Yang
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA
| | - Hong Wang
- Centers for Metabolic & Cardiovascular Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140, USA.
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11
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Affiliation(s)
- H. Xi
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
- College of Animal Science and Technology, Shanxi Agricultural University, Shanxi, PR China
| | - L. Lei
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
| | - W. Fu
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
- Department of human anatomy, Jiujiang University, Jiujiang, PR China
| | - L. Li
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
- Department of human anatomy, Jiujiang University, Jiujiang, PR China
| | - X. Cao
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
| | - L. Yang
- Key Laboratory of System Bio-medicine of Jiangxi Province, Jiujiang University, Jiujiang, PR China
- Department of human anatomy, Jiujiang University, Jiujiang, PR China
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12
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Zhang Z, Fan X, Xi H, Ji R, Shen H, Shi A, He J. Effect of local scrotal heating on the expression of tight junction-associated molecule Occludin in boar testes. Reprod Domest Anim 2018; 53:458-462. [PMID: 29330895 DOI: 10.1111/rda.13131] [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: 09/25/2017] [Accepted: 11/23/2017] [Indexed: 11/30/2022]
Abstract
The aim of this study was to determine whether local scrotal heating (42°C, for 1 hr) had an effect on the expression of tight junction (TJ)-associated molecule Occludin in boar testes. Adult boars (Landrace, n = 6) were used and randomly divided into two groups (n = 3 each). Three boars were given local scrotal exposure to 42°C for approximately 1 h with a home-made electric blanket of controlled temperature as local scrotal heating group, the other three boars received no heat treatment and were left at standard room temperature as control group. After 6 hr, all boars were castrated and the testes were harvested. qRT-PCR, Western blotting and immunohistochemistry were used to explore the expression and localization of Occludin. qRT-PCR and Western blotting showed that the protein and mRNA levels of Occludin significantly decreased in local scrotal heating group as compared to the control. Furthermore, immunoreactivity staining of Occludin was localized at the sites of the blood-testis barrier (BTB) and formed an almost consecutive and strong immunoreactivity strand in the control, while Occludin was limited to Sertoli cells (SCs) and no obvious immunoreactivity strand was present in local scrotal heating group. These data indicated that local scrotal heating decreased the expression of TJ-associated molecule Occludin, which may be involved in heat-induced spermatogenesis damage.
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Affiliation(s)
- Z Zhang
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - X Fan
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - H Xi
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - R Ji
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - H Shen
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
| | - A Shi
- Landscape Administration, Yangquan, China
| | - J He
- Institute of Animal Biotechnology, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, China
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13
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Wang L, Nanayakkara G, Yang Q, Tan H, Drummer C, Sun Y, Shao Y, Fu H, Cueto R, Shan H, Bottiglieri T, Li YF, Johnson C, Yang WY, Yang F, Xu Y, Xi H, Liu W, Yu J, Choi ET, Cheng X, Wang H, Yang X. A comprehensive data mining study shows that most nuclear receptors act as newly proposed homeostasis-associated molecular pattern receptors. J Hematol Oncol 2017; 10:168. [PMID: 29065888 PMCID: PMC5655880 DOI: 10.1186/s13045-017-0526-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/19/2017] [Indexed: 12/16/2022] Open
Abstract
Background Nuclear receptors (NRs) can regulate gene expression; therefore, they are classified as transcription factors. Despite the extensive research carried out on NRs, still several issues including (1) the expression profile of NRs in human tissues, (2) how the NR expression is modulated during atherosclerosis and metabolic diseases, and (3) the overview of the role of NRs in inflammatory conditions are not fully understood. Methods To determine whether and how the expression of NRs are regulated in physiological/pathological conditions, we took an experimental database analysis to determine expression of all 48 known NRs in 21 human and 17 murine tissues as well as in pathological conditions. Results We made the following significant findings: (1) NRs are differentially expressed in tissues, which may be under regulation by oxygen sensors, angiogenesis pathway, stem cell master regulators, inflammasomes, and tissue hypo-/hypermethylation indexes; (2) NR sequence mutations are associated with increased risks for development of cancers and metabolic, cardiovascular, and autoimmune diseases; (3) NRs have less tendency to be upregulated than downregulated in cancers, and autoimmune and metabolic diseases, which may be regulated by inflammation pathways and mitochondrial energy enzymes; and (4) the innate immune sensor inflammasome/caspase-1 pathway regulates the expression of most NRs. Conclusions Based on our findings, we propose a new paradigm that most nuclear receptors are anti-inflammatory homeostasis-associated molecular pattern receptors (HAMPRs). Our results have provided a novel insight on NRs as therapeutic targets in metabolic diseases, inflammations, and malignancies. Electronic supplementary material The online version of this article (10.1186/s13045-017-0526-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Luqiao Wang
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, China.,Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.,Department of Cardiovascular Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Gayani Nanayakkara
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Qian Yang
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.,Department of Ultrasound, Xijing Hospital and Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Hongmei Tan
- Department of Pathophysiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Charles Drummer
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Yu Sun
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Ying Shao
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Hangfei Fu
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Ramon Cueto
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Huimin Shan
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Teodoro Bottiglieri
- Institute of Metabolic Disease, Baylor Research Institute, 3500 Gaston Avenue, Dallas, TX, 75246, USA
| | - Ya-Feng Li
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Candice Johnson
- Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - William Y Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Fan Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Yanjie Xu
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, China
| | - Hang Xi
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Weiqing Liu
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, China
| | - Jun Yu
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Eric T Choi
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.,Department of Surgery, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Xiaoshu Cheng
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, 330006, China.
| | - Hong Wang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.,Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA. .,Centers for Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA. .,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA.
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14
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Dai J, Fang P, Saredy J, Xi H, Ramon C, Yang W, Choi ET, Ji Y, Mao W, Yang X, Wang H. Metabolism-associated danger signal-induced immune response and reverse immune checkpoint-activated CD40 + monocyte differentiation. J Hematol Oncol 2017; 10:141. [PMID: 28738836 PMCID: PMC5525309 DOI: 10.1186/s13045-017-0504-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/26/2017] [Indexed: 01/16/2023] Open
Abstract
Adaptive immunity is critical for disease progression and modulates T cell (TC) and antigen-presenting cell (APC) functions. Three signals were initially proposed for adaptive immune activation: signal 1 antigen recognition, signal 2 co-stimulation or co-inhibition, and signal 3 cytokine stimulation. In this article, we propose to term signal 2 as an immune checkpoint, which describes interactions of paired molecules leading to stimulation (stimulatory immune checkpoint) or inhibition (inhibitory immune checkpoint) of an immune response. We classify immune checkpoint into two categories: one-way immune checkpoint for forward signaling towards TC only, and two-way immune checkpoint for both forward and reverse signaling towards TC and APC, respectively. Recently, we and others provided evidence suggesting that metabolic risk factors (RF) activate innate and adaptive immunity, involving the induction of immune checkpoint molecules. We summarize these findings and suggest a novel theory, metabolism-associated danger signal (MADS) recognition, by which metabolic RF activate innate and adaptive immunity. We emphasize that MADS activates the reverse immune checkpoint which leads to APC inflammation in innate and adaptive immunity. Our recent evidence is shown that metabolic RF, such as uremic toxin or hyperhomocysteinemia, induced immune checkpoint molecule CD40 expression in monocytes (MC) and elevated serum soluble CD40 ligand (sCD40L) resulting in CD40+ MC differentiation. We propose that CD40+ MC is a novel pro-inflammatory MC subset and a reliable biomarker for chronic kidney disease severity. We summarize that CD40:CD40L immune checkpoint can induce TC and APC activation via forward stimulatory, reverse stimulatory, and TC contact-independent immune checkpoints. Finally, we modeled metabolic RF-induced two-way stimulatory immune checkpoint amplification and discussed potential signaling pathways including AP-1, NF-κB, NFAT, STAT, and DNA methylation and their contribution to systemic and tissue inflammation.
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Affiliation(s)
- Jin Dai
- Department of Cardiology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian road, Hangzhou, 310006, Zhejiang, China.,Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Pu Fang
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Jason Saredy
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Hang Xi
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Cueto Ramon
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - William Yang
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Eric T Choi
- Department of Surgery, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Yong Ji
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 210029, China
| | - Wei Mao
- Department of Cardiology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian road, Hangzhou, 310006, Zhejiang, China.
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA.,Department of Pharmacology, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA
| | - Hong Wang
- Center for Metabolic Disease Research, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA. .,Department of Pharmacology, Temple University School of Medicine, 3500 N. Broad Street, Philadelphia, PA, 19140, USA.
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15
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Xu Y, Xia J, Liu S, Stein S, Ramon C, Xi H, Wang L, Xiong X, Zhang L, He D, Yang W, Zhao X, Cheng X, Yang X, Wang H. Endocytosis and membrane receptor internalization: implication of F-BAR protein Carom. Front Biosci (Landmark Ed) 2017; 22:1439-1457. [PMID: 28199211 DOI: 10.2741/4552] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Endocytosis is a cellular process mostly responsible for membrane receptor internalization. Cell membrane receptors bind to their ligands and form a complex which can be internalized. We previously proposed that F-BAR protein initiates membrane curvature and mediates endocytosis via its binding partners. However, F-BAR protein partners involved in membrane receptor endocytosis and the regulatory mechanism remain unknown. In this study, we established database mining strategies to explore mechanisms underlying receptor-related endocytosis. We identified 34 endocytic membrane receptors and 10 regulating proteins in clathrin-dependent endocytosis (CDE), a major process of membrane receptor internalization. We found that F-BAR protein FCHSD2 (Carom) may facilitate endocytosis via 9 endocytic partners. Carom is highly expressed, along with highly expressed endocytic membrane receptors and partners, in endothelial cells and macrophages. We established 3 models of Carom-receptor complexes and their intracellular trafficking based on protein interaction and subcellular localization. We conclude that Carom may mediate receptor endocytosis and transport endocytic receptors to the cytoplasm for receptor signaling and lysosome/proteasome degradation, or to the nucleus for RNA processing, gene transcription and DNA repair.
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Affiliation(s)
- Yanjie Xu
- Center Department of Cardiology, Second Affiliated Hospital of Nanchang University, Nan Chang, Jiang Xi, 330006, China, and Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Jixiang Xia
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Suxuan Liu
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140,and Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Sam Stein
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Cueto Ramon
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Hang Xi
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Luqiao Wang
- Center Department of Cardiology, Second Affiliated Hospital of Nanchang University, Nan Chang, Jiang Xi, 330006, China, and Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Xinyu Xiong
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Lixiao Zhang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Dingwen He
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nan Chang, Jiang Xi, 330006, China
| | - William Yang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Xianxian Zhao
- Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Xiaoshu Cheng
- Center Department of Cardiology, Second Affiliated Hospital of Nanchang University, Nan Chang, Jiang Xi, 330006, China
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, and Cardiovascular Research, Temple University School of Medicine, Philadelphia, PA, 19140, and Thrombosis Research, Temple University School of Medicine
| | - Hong Wang
- Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA, 19140, and Cardiovascular Research, Temple University School of Medicine, Philadelphia, PA, 19140, and Thrombosis Research, Temple University School of Medicine,
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16
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Xi H, Fan X, Zhang Z, Liang Y, Li Q, He J. Bax and Bcl-2 are involved in the apoptosis induced by local testicular heating in the boar testis. Reprod Domest Anim 2017; 52:359-365. [DOI: 10.1111/rda.12904] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 11/05/2016] [Indexed: 12/11/2022]
Affiliation(s)
- H Xi
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
| | - X Fan
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
| | - Z Zhang
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
| | - Y Liang
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
| | - Q Li
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
| | - J He
- Institute of Animal Biotechnology; College of Animal Science and Technology; Shanxi Agricultural University; Taigu Shanxi China
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Xi H, Shi J, Meng L, Zhou G, Zhou BY, Dong J, Tan X, Liu JH, Wu WB, Shi H, Yu PL. [Application of frailty index for comprehensive geriatric assessment in the elderly in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:718-21. [PMID: 27188370 DOI: 10.3760/cma.j.issn.0254-6450.2016.05.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To discuss the suitability of frailty index for comprehensive geriatric assessment(FI-CGA)in the elderly in China, and evaluate the application of FI-CGA in China. METHODS A comprehensive geriatric assessment was conducted among 118 old adults receiving health examination, and frailty index was calculated. Clinical frailty scale(CFS)was also used to evaluate the frail status of the old adults. The correlation between FI-CGA value and CFS level of the old adults was analyzed. RESULTS The mean value of FI-CGA was 0.19 ± 0.07, and the average level of CFS was 3.11 ± 1.46. Women had higher mean value of FI-CGA and higher CFS level than men(FI-CGA= 0.20 ± 0.02 for women, 0.19 ± 0.07 for men; CFS =3.40 ± 0.55 for women, 3.10 ± 1.48 for men), but the differences had no significance(t=0.270, 0.452, P=0.788, 0.652). The FI-CGA value and CFS level increased with age(F=10.437, 5.651, P=0.000, 0.001); and there was a positive correlation between FI-CGA value and CFS level(r=0.615, P=0.000). CONCLUSION FI-CGA is an effective model for the quantitative evaluation of the frail status of the elderly, and can be used in the clinical practice of geriatric medicine.
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Affiliation(s)
- H Xi
- Department of Geriatrics, Beijing Hospital, Beijing 100730, China
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Wang L, Fu H, Nanayakkara G, Li Y, Shao Y, Johnson C, Cheng J, Yang WY, Yang F, Lavallee M, Xu Y, Cheng X, Xi H, Yi J, Yu J, Choi ET, Wang H, Yang X. Novel extracellular and nuclear caspase-1 and inflammasomes propagate inflammation and regulate gene expression: a comprehensive database mining study. J Hematol Oncol 2016; 9:122. [PMID: 27842563 PMCID: PMC5109738 DOI: 10.1186/s13045-016-0351-5] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Accepted: 11/03/2016] [Indexed: 12/19/2022] Open
Abstract
Background Caspase-1 is present in the cytosol as an inactive zymogen and requires the protein complexes named “inflammasomes” for proteolytic activation. However, it remains unclear whether the proteolytic activity of caspase-1 is confined only to the cytosol where inflammasomes are assembled to convert inactive pro-caspase-1 to active caspase-1. Methods We conducted meticulous data analysis methods on proteomic, protein interaction, protein intracellular localization, and gene expressions of 114 experimentally identified caspase-1 substrates and 38 caspase-1 interaction proteins in normal physiological conditions and in various pathologies. Results We made the following important findings: (1) Caspase-1 substrates and interaction proteins are localized in various intracellular organelles including nucleus and secreted extracellularly; (2) Caspase-1 may get activated in situ in the nucleus in response to intra-nuclear danger signals; (3) Caspase-1 cleaves its substrates in exocytotic secretory pathways including exosomes to propagate inflammation to neighboring and remote cells; (4) Most of caspase-1 substrates are upregulated in coronary artery disease regardless of their subcellular localization but the majority of metabolic diseases cause no significant expression changes in caspase-1 nuclear substrates; and (5) In coronary artery disease, majority of upregulated caspase-1 extracellular substrate-related pathways are involved in induction of inflammation; and in contrast, upregulated caspase-1 nuclear substrate-related pathways are more involved in regulating cell death and chromatin regulation. Conclusions Our identification of novel caspase-1 trafficking sites, nuclear and extracellular inflammasomes, and extracellular caspase-1-based inflammation propagation model provides a list of targets for the future development of new therapeutics to treat cardiovascular diseases, inflammatory diseases, and inflammatory cancers. Electronic supplementary material The online version of this article (doi:10.1186/s13045-016-0351-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Luqiao Wang
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.,Department of Cardiovascular Medicine, the Second Affiliated Hospital of Nanchang University, 1 Minde Road, Nanchang, Jiangxi, 330006, China
| | - Hangfei Fu
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Gayani Nanayakkara
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Yafeng Li
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Ying Shao
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Candice Johnson
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Jiali Cheng
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - William Y Yang
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Fan Yang
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Muriel Lavallee
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Yanjie Xu
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.,Department of Cardiovascular Medicine, the Second Affiliated Hospital of Nanchang University, 1 Minde Road, Nanchang, Jiangxi, 330006, China
| | - Xiaoshu Cheng
- Department of Cardiovascular Medicine, the Second Affiliated Hospital of Nanchang University, 1 Minde Road, Nanchang, Jiangxi, 330006, China
| | - Hang Xi
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Jonathan Yi
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Jun Yu
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Eric T Choi
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.,Department of Surgery, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Hong Wang
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA
| | - Xiaofeng Yang
- Centers for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA. .,Cardiovascular Research and Thrombosis Research, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA. .,Department of Pharmacology, Lewis Katz School of Medicine at Temple University, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA. .,Department of Physiology, 3500 North Broad Street, MERB-1059, Philadelphia, PA, 19140, USA.
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Xi H, Zhang Y, Xu Y, Yang WY, Jiang X, Sha X, Cheng X, Wang J, Qin X, Yu J, Ji Y, Yang X, Wang H. Caspase-1 Inflammasome Activation Mediates Homocysteine-Induced Pyrop-Apoptosis in Endothelial Cells. Circ Res 2016; 118:1525-39. [PMID: 27006445 DOI: 10.1161/circresaha.116.308501] [Citation(s) in RCA: 172] [Impact Index Per Article: 21.5] [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: 02/05/2016] [Accepted: 03/22/2016] [Indexed: 01/22/2023]
Abstract
RATIONALE Endothelial injury is an initial mechanism mediating cardiovascular disease. OBJECTIVE Here, we investigated the effect of hyperhomocysteinemia on programed cell death in endothelial cells (EC). METHODS AND RESULTS We established a novel flow-cytometric gating method to define pyrotosis (Annexin V(-)/Propidium iodide(+)). In cultured human EC, we found that: (1) homocysteine and lipopolysaccharide individually and synergistically induced inflammatory pyroptotic and noninflammatory apoptotic cell death; (2) homocysteine/lipopolysaccharide induced caspase-1 activation before caspase-8, caspase-9, and caspase-3 activations; (3) caspase-1/caspase-3 inhibitors rescued homocysteine/lipopolysaccharide-induced pyroptosis/apoptosis, but caspase-8/caspase-9 inhibitors had differential rescue effect; (4) homocysteine/lipopolysaccharide-induced nucleotide-binding oligomerization domain, and leucine-rich repeat and pyrin domain containing protein 3 (NLRP3) protein caused NLRP3-containing inflammasome assembly, caspase-1 activation, and interleukin (IL)-1β cleavage/activation; (5) homocysteine/lipopolysaccharide elevated intracellular reactive oxygen species, (6) intracellular oxidative gradient determined cell death destiny as intermediate intracellular reactive oxygen species levels are associated with pyroptosis, whereas high reactive oxygen species corresponded to apoptosis; (7) homocysteine/lipopolysaccharide induced mitochondrial membrane potential collapse and cytochrome-c release, and increased B-cell lymphoma 2-associated X protein/B-cell lymphoma 2 ratio which were attenuated by antioxidants and caspase-1 inhibitor; and (8) antioxidants extracellular superoxide dismutase and catalase prevented homocysteine/lipopolysaccharide -induced caspase-1 activation, mitochondrial dysfunction, and pyroptosis/apoptosis. In cystathionine β-synthase-deficient (Cbs(-/-)) mice, severe hyperhomocysteinemia-induced caspase-1 activation in isolated lung EC and caspase-1 expression in aortic endothelium, and elevated aortic caspase-1, caspase-9 protein/activity and B-cell lymphoma 2-associated X protein/B-cell lymphoma 2 ratio in Cbs(-/-) aorta and human umbilical vein endothelial cells. Finally, homocysteine-induced DNA fragmentation was reversed in caspase-1(-/-) EC. Hyperhomocysteinemia-induced aortic endothelial dysfunction was rescued in caspase-1(-/-) and NLRP3(-/-) mice. CONCLUSIONS Hyperhomocysteinemia preferentially induces EC pyroptosis via caspase-1-dependent inflammasome activation leading to endothelial dysfunction. We termed caspase-1 responsive pyroptosis and apoptosis as pyrop-apoptosis.
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Affiliation(s)
- Hang Xi
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Yuling Zhang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Yanjie Xu
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - William Y Yang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Xiaohua Jiang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Xiaojin Sha
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Xiaoshu Cheng
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Jingfeng Wang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Xuebin Qin
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Jun Yu
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Yong Ji
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.).
| | - Xiaofeng Yang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.)
| | - Hong Wang
- From the Centers for Metabolic Disease Research (H.X., Y.Z., Y.X., W.Y.Y., X.J., J.Y., X.Y., H.W.), Cardiovascular Research (X.S., X.Y., H.W.), Thrombosis Research (X.Y., H.W.), Departments of Pharmacology (X.Y., H.W.), Neuroscience (X.Q.), Temple University School of Medicine, Philadelphia, PA; Department of Cardiology, Sun Yixian Memorial Hospital, Zhongshan University School of Medicine, Guangzhou, China (Y.Z., J.W.); Department of Cardiology, Second Hospital of Nanchang University, Institute of Cardiovascular Disease in Nanchang University, Nan Chang, Jiang Xi, China (Y.X., X.C.); and Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China (Y.J.).
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Qin H, Cai A, Xi H, Yuan J, Chen L. ZnRF3 induces apoptosis of gastric cancer cells by antagonizing Wnt and Hedgehog signaling. Panminerva Med 2015; 57:167-175. [PMID: 25923840] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM The aim of this paper was to investigate the function an importance of E3-ubiquitin ligase ZnRF3 in the progression of cancer cell growth. METHODS A total of 58 patients (44 males and 14 females) were enrolled in the study and their gastric tumors were removed surgically and were staged by the TNM approach. Among these patients, 43 patients died and 15 survived at the time of this study. The tumors and the paracancerous tissues were examined by immunohostochemistry for the expression of ZnRF3. We assessed the expression of ZnRF3 in gastric tumors and paracancerous tissues from our patients and related this to patient survival. RESULTS A large proportion of malignant cancers of the stomach are gastric adenocarcinoma type. In spite of many studies, the molecular basis for this cancer is still unclear. Deregulated cell proliferative signaling via Wnt/β-catenin and Hedgehog pathways is considered important in the pathogenesis of many cancers including the gastric cancer. Recent studies identified ZnRF3 protein, which is a E3-ubiquitin ligase and which is either deleted or mutated in cancers, to inhibit Wnt signaling. However, the significance of ZnRF3 in the control of gastric cancer and whether it also regulates Hedgehog signaling pathway, is not known. ZnRF3 expression was much higher in tumors from aged patients. Male patients showed higher mortality than the females. Mechanistic studies using normal gastric cells (GES1) and gastric cancer cells (MGC-803) infected with either AdZnRF3 or AdGFP viral vectors, revealed that ZnRF3 overexpression causes significantly more apoptosis and lowered proliferation of cancer cells. ZnRF3 overexpression led to greatly reduced levels of Lgr5, a component of Wnt signaling and also Gli1, a component of Hedgehog signaling. Thus, ZnRF3 negatively influences both the Wnt and Hedgehog proliferative pathways and probably this way it negatively regulates cancer progression. These results suggest the importance of normal ZnRF3 function in checking the progression of cancer cell growth and indicate that a lack of this protein can lead to poorer clinical outcomes for gastric cancer patients. CONCLUSION We observed a clear relationship between ZnRF3 expression in paracancerous tissue and tumor size.
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Affiliation(s)
- H Qin
- General Surgery Department, PLA General Hospital, Beijing, China -
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Sha X, Meng S, Li X, Xi H, Maddaloni M, Pascual DW, Shan H, Jiang X, Wang H, Yang XF. Interleukin-35 Inhibits Endothelial Cell Activation by Suppressing MAPK-AP-1 Pathway. J Biol Chem 2015; 290:19307-18. [PMID: 26085094 DOI: 10.1074/jbc.m115.663286] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [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: 05/05/2015] [Indexed: 11/06/2022] Open
Abstract
Vascular response is an essential pathological mechanism underlying various inflammatory diseases. This study determines whether IL-35, a novel responsive anti-inflammatory cytokine, inhibits vascular response in acute inflammation. Using a mouse model of LPS-induced acute inflammation and plasma samples from sepsis patients, we found that IL-35 was induced in the plasma of mice after LPS injection as well as in the plasma of sepsis patients. In addition, IL-35 decreased LPS-induced proinflammatory cytokines and chemokines in the plasma of mice. Furthermore, IL-35 inhibited leukocyte adhesion to the endothelium in the vessels of lung and cremaster muscle and decreased the numbers of inflammatory cells in bronchoalveolar lavage fluid. Mechanistically, IL-35 inhibited the LPS-induced up-regulation of endothelial cell (EC) adhesion molecule VCAM-1 through IL-35 receptors gp130 and IL-12Rβ2 via inhibition of the MAPK-activator protein-1 (AP-1) signaling pathway. We also found that IL-27, which shares the EBI3 subunit with IL-35, promoted LPS-induced VCAM-1 in human aortic ECs and that EBI3-deficient mice had similar vascular response to LPS when compared with that of WT mice. These results demonstrated for the first time that inflammation-induced IL-35 inhibits LPS-induced EC activation by suppressing MAPK-AP1-mediated VCAM-1 expression and attenuates LPS-induced secretion of proinflammatory cytokines/chemokines. Our results provide insight into the control of vascular inflammation by IL-35 and suggest that IL-35 is an attractive novel therapeutic reagent for sepsis and cardiovascular diseases.
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Affiliation(s)
- Xiaojin Sha
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Shu Meng
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Xinyuan Li
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Hang Xi
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Massimo Maddaloni
- the Department of Infectious Diseases & Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32608
| | - David W Pascual
- the Department of Infectious Diseases & Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32608
| | - Huimin Shan
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Xiaohua Jiang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Hong Wang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Xiao-feng Yang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, and Thrombosis Research, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
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Lopez-Pastrana J, Ferrer LM, Li YF, Xiong X, Xi H, Cueto R, Nelson J, Sha X, Li X, Cannella AL, Imoukhuede PI, Qin X, Choi ET, Wang H, Yang XF. Inhibition of Caspase-1 Activation in Endothelial Cells Improves Angiogenesis: A NOVEL THERAPEUTIC POTENTIAL FOR ISCHEMIA. J Biol Chem 2015; 290:17485-94. [PMID: 26037927 DOI: 10.1074/jbc.m115.641191] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Indexed: 12/12/2022] Open
Abstract
Deficient angiogenesis may contribute to worsen the prognosis of myocardial ischemia, peripheral arterial disease, ischemic stroke, etc. Dyslipidemic and inflammatory environments attenuate endothelial cell (EC) proliferation and angiogenesis, worsening the prognosis of ischemia. Under these dyslipidemic and inflammatory environments, EC-caspase-1 becomes activated and induces inflammatory cell death that is defined as pyroptosis. However, the underlying mechanism that correlates caspase-1 activation with angiogenic impairment and the prognosis of ischemia remains poorly defined. By using flow cytometric analysis, enzyme and receptor inhibitors, and hind limb ischemia model in caspase-1 knock-out (KO) mice, we examined our novel hypothesis, i.e. inhibition of caspase-1 in ECs under dyslipidemic and inflammatory environments attenuates EC pyroptosis, improves EC survival mediated by vascular endothelial growth factor receptor 2 (VEGFR-2), angiogenesis, and the prognosis of ischemia. We have made the following findings. Proatherogenic lipids induce higher caspase-1 activation in larger sizes of human aortic endothelial cells (HAECs) than in smaller sizes of HAECs. Proatherogenic lipids increase pyroptosis significantly more in smaller sizes of HAECs than in larger sizes of the cells. VEGFR-2 inhibition increases caspase-1 activation in HAECs induced by lysophosphatidylcholine treatment. Caspase-1 activation inhibits VEGFR-2 expression. Caspase-1 inhibition improves the tube formation of lysophosphatidylcholine-treated HAECs. Finally, caspase-1 depletion improves angiogenesis and blood flow in mouse hind limb ischemic tissues. Our results have demonstrated for the first time that inhibition of proatherogenic caspase-1 activation in ECs improves angiogenesis and the prognosis of ischemia.
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Affiliation(s)
- Jahaira Lopez-Pastrana
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research
| | - Lucas M Ferrer
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, the Department of Bioengineering, University of Illinois-Urbana Champaign, Urbana, Illinois 61801
| | - Ya-Feng Li
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research
| | - Xinyu Xiong
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Hang Xi
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Ramon Cueto
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Jun Nelson
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research
| | - Xiaojin Sha
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research
| | - Xinyuan Li
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Ann L Cannella
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Princess I Imoukhuede
- the Department of Bioengineering, University of Illinois-Urbana Champaign, Urbana, Illinois 61801
| | | | - Eric T Choi
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Surgery, Temple University School of Medicine, Philadelphia, Pennsylvania 19140 and
| | - Hong Wang
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology
| | - Xiao-Feng Yang
- From the Centers for Metabolic Disease Research, Cardiovascular Research and Thrombosis Research, Departments of Pharmacology,
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Xi H, Choi S, Dipaul JM, Zhang Y, Yang X, Wang H. Abstract 339: Hyperhomocysteinemia Reduces Large HDL Particle and EL Expression via Hypomethylation Related Mechanism in Mice. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hyper-homocysteinemia (HHcy) has been identified as an independent risk factors of cardiovascular diseases (CVD). We previous reported HHcy is associated with reduced HDL-cholesterol and decreased large HDL particle in mouse and human CVD. Here, we investigated underlying mechanism of homocysteine (Hcy)-related HDL biosynthesis and degradation.
We examined protein/gene expression, activities of four HDL-degradation related lipases including endothelial lipase (EL), lipoprotein lipase (LPL), hepatic lipase (HL), and pancreatic lipase (PL). Severe HHcy (98.4±22 μM) was established in cystathionine betasynthase-gene mutant mice (
Cbs
+/-
), moderate HHcy (23.5±5 μM) was also developed in
Cbs
+/+
mice, both fed a high methionine (HM) diet for 8-week. Moderate and severe HHcy increased protein levels of EL in aorta (204% and 319%), lung (201% and 264%), and decreased LPL in aorta (98% and 34%), lung (99% and 61%), spleen (98% and 51%). HL and PL protein levels were not changed by HHcy. Activities of overall lipases were increased in moderate and severe HHcy in aorta (19.8±5.2 and 27.5±7.1, arbitrary unit), plasma (64.3±5.5 and 126.5±26.2), adipose (147.0±8.9 and 210.9±38.9) and liver (160.5±41.3 and 276.2±51.3).
Next, we examined tissue levels of Hcy, and its metabolites (SAM, SAH) in heart, lung, brain, spleen, kidney and liver from wild type mice. Tissue expression profile of Hcy degradation and synthesis-related enzymes were established by database mining analysis. We found that mRNA levels of EL, HL, and PL were positively correlated with Hcy and negatively correlated with SAM/SAH ratio, which indicated of methylation status. In contrast, LPL mRNA levels were negatively correlated with Hcy and positively correlated with SAM/SAH ratio. These data suggest that EL, HL, PL gene expression may be induced by Hcy-related hypomethylation.
We identified a large CpG island with 113 CG dinucleotide pairs in human EL promoter region, where four HDL-related single nucleotide polymorphisms (SNPs) was overlapping with CpG containing transcription factor consensus element.
Our study suggests that HHcy inhibits HDL biosynthesis, promotes HDL degradation via EL induction and DNA hypomethylation related mechanisms.
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Affiliation(s)
- Hang Xi
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia, PA
| | - Seungbum Choi
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia,, PA
| | - James M Dipaul
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia,, PA
| | - Yuling Zhang
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia,, PA
| | - Xiaofeng Yang
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia,, PA
| | - Hong Wang
- Pharmacology, CMDR, CVRC, Temple Univ Sch of Medicine, Philadelphia,, PA
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24
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Yin Y, Li X, Sha X, Xi H, Li YF, Shao Y, Mai J, Virtue A, Lopez-Pastrana J, Meng S, Tilley DG, Monroy MA, Choi ET, Thomas CJ, Jiang X, Wang H, Yang XF. Early hyperlipidemia promotes endothelial activation via a caspase-1-sirtuin 1 pathway. Arterioscler Thromb Vasc Biol 2015; 35:804-16. [PMID: 25705917 DOI: 10.1161/atvbaha.115.305282] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The role of receptors for endogenous metabolic danger signals-associated molecular patterns has been characterized recently as bridging innate immune sensory systems for danger signals-associated molecular patterns to initiation of inflammation in bone marrow-derived cells, such as macrophages. However, it remains unknown whether endothelial cells (ECs), the cell type with the largest numbers and the first vessel cell type exposed to circulating danger signals-associated molecular patterns in the blood, can sense hyperlipidemia. This report determined whether caspase-1 plays a role in ECs in sensing hyperlipidemia and promoting EC activation. APPROACH AND RESULTS Using biochemical, immunologic, pathological, and bone marrow transplantation methods together with the generation of new apoplipoprotein E (ApoE)(-/-)/caspase-1(-/-) double knockout mice, we made the following observations: (1) early hyperlipidemia induced caspase-1 activation in ApoE(-/-) mouse aorta; (2) caspase-1(-/-)/ApoE(-/-) mice attenuated early atherosclerosis; (3) caspase-1(-/-)/ApoE(-/-) mice had decreased aortic expression of proinflammatory cytokines and attenuated aortic monocyte recruitment; and (4) caspase-1(-/-)/ApoE(-/-) mice had decreased EC activation, including reduced adhesion molecule expression and cytokine secretion. Mechanistically, oxidized lipids activated caspase-1 and promoted pyroptosis in ECs by a reactive oxygen species mechanism. Caspase-1 inhibition resulted in accumulation of sirtuin 1 in the ApoE(-/-) aorta, and sirtuin 1 inhibited caspase-1 upregulated genes via activator protein-1 pathway. CONCLUSIONS Our results demonstrate for the first time that early hyperlipidemia promotes EC activation before monocyte recruitment via a caspase-1-sirtuin 1-activator protein-1 pathway, which provides an important insight into the development of novel therapeutics for blocking caspase-1 activation as early intervention of metabolic cardiovascular diseases and inflammations.
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Affiliation(s)
- Ying Yin
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Xinyuan Li
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Xiaojin Sha
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Hang Xi
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Ya-Feng Li
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Ying Shao
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Jietang Mai
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Anthony Virtue
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Jahaira Lopez-Pastrana
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Shu Meng
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Douglas G Tilley
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - M Alexandra Monroy
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Eric T Choi
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Craig J Thomas
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Xiaohua Jiang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Hong Wang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.)
| | - Xiao-Feng Yang
- From the Centers for Metabolic Disease Research, Cardiovascular Research, Thrombosis Research (Y.Y., X.L., X.S., H.X., Y.-F.L., Y.S., J.M., A.V., J.L.-P., S.M., M.A.M., E.T.C., X.J., H.W., X.-F.Y.), Center for Translational Medicine (D.G.T.), Department of Pharmacology (Y.Y., X.L., X.S., H.X., Y.-F.L, Y.S., J.M., A.V., J.L.-P., S.M., D.G.T., X.J., H.W., X.-F.Y.), and Department of Surgery (M.A.M., E.T.C.), Temple University School of Medicine, Philadelphia, PA; and NIH Chemical Genomics Center, Division of Pre-clinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD (C.J.T.).
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25
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Li D, Xi H, Yu X, Cai Y. Molecular cloning and characterization of a subtilisin-like protease from Arabidopsis thaliana. Genet Mol Res 2015; 14:16535-45. [DOI: 10.4238/2015.december.9.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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26
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Wu CB, Xi H, Zhang LM, Zhou Q. Sialendoscopy-assisted treatment of trauma to Stensen's duct: technical note. Br J Oral Maxillofac Surg 2014; 53:102-3. [PMID: 25451072 DOI: 10.1016/j.bjoms.2014.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 09/24/2014] [Indexed: 10/24/2022]
Affiliation(s)
- C-B Wu
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, No. 117, Nanjing North Street, Heping District, Shenyang 110002, Liaoning Province, PR China.
| | - H Xi
- Department of Pediatric Dentistry, School of Stomatology, Jilin University, No. 1500, Qinghua Street, Chaoyang District, Changchun 130021, Jilin Province, PR China.
| | - L-M Zhang
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, No. 117, Nanjing North Street, Heping District, Shenyang 110002, Liaoning Province, PR China.
| | - Q Zhou
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, No. 117, Nanjing North Street, Heping District, Shenyang 110002, Liaoning Province, PR China.
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27
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Guo X, Hooshdaran B, Rafiq K, Xi H, Kolpakov M, Houser S, Koch W, Liggett S, Sabri A. Death‐associated protein kinase mediates myofibril degeneration and myocyte apoptosis induced by beta‐adrenergic receptors (404.3). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.404.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xinji Guo
- Temple UniversityPhiladelphiaPAUnited States
| | | | | | - Hang Xi
- Temple UniversityPhiladelphiaPAUnited States
| | | | | | - Walter Koch
- Temple UniversityPhiladelphiaPAUnited States
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28
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Dong H, Zhang Y, Xi H. The Effects of Epidural Anaesthesia and Analgesia on Natural Killer Cell Cytotoxicity and Cytokine Response in Patients with Epithelial Ovarian Cancer Undergoing Radical Resection. J Int Med Res 2012. [PMID: 23206463 DOI: 10.1177/030006051204000520] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Objective: Epidural anaesthesia appears to promote antitumourigenic activity in patients with malignant disease who are undergoing surgery. This study investigated immune function in women with epithelial ovarian cancer undergoing radical resection with either general anaesthesia alone or in combination with epidural anaesthesia. Methods: Patients ( n = 61) were randomized to receive either combined general/epidural anaesthesia (study group) or general anaesthesia alone (control group). Natural killer cell cytotoxicity (NKCC) and serum concentrations of four cytokines (interleukin [IL]-1β, -8 and -10 and interferon [IFN]-γ) were measured before anaesthesia ( Tpre) and 4h after skinincision ( T4 h) in both groups. Results: In both groups, concentrations of protumourigenic cytokines (IL-1β and IL-8) were significantly higher at T4 h than at Tpre, while concentrations of antitumourigenic cytokines (IL-10 and IFN-γ) and NKCC were significantly lower at T4 h. The study group had significantly higher NKCC, IL-10 and IFN-γ levels and lower IL-1β and IL-8 levels at TT h compared with the control group. Conclusion: Combined general/epidural anaesthesia appeared to promote antitumourigenic NKCC and cytokine responses.
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Affiliation(s)
- H Dong
- Department of Anaesthesiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Zhang
- Department of Anaesthesiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Xi
- Department of Anaesthesiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Abstract
Atherosclerosis, a pathological process that underlies the development of cardiovascular disease, is the primary cause of morbidity and mortality in patients with type 2 diabetes mellitus (T2DM). T2DM is characterized by hyperglycemia and insulin resistance (IR), in which target tissues fail to respond to insulin. Systemic IR is associated with impaired insulin signaling in the metabolic tissues and vasculature. Insulin receptor is highly expressed in the liver, muscle, pancreas, and adipose tissue. It is also expressed in vascular cells. It has been suggested that insulin signaling in vascular cells regulates cell proliferation and vascular function. In this review, we discuss the association between IR, metabolic stress, and atherosclerosis with focus on 1) tissue and cell distribution of insulin receptor and its differential signaling transduction and 2) potential mechanism of insulin signaling impairment and its role in the development of atherosclerosis and vascular function in metabolic disorders including hyperglycemia, hypertension, dyslipidemia, and hyperhomocysteinemia. We propose that insulin signaling impairment is the foremost biochemical mechanism underlying increased cardiovascular morbidity and mortality in atherosclerosis, T2DM, and metabolic syndrome.
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Affiliation(s)
- Meghana Pansuria
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Hang Xi
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Le Li
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140
- School of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, PR, China
| | - Xiao-Feng Yang
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA, 19140
| | - Hong Wang
- Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, 19140
- Cardiovascular Research Center, Temple University School of Medicine, Philadelphia, PA, 19140
- Thrombosis Research Center of Temple University School of Medicine, Philadelphia, PA, 19140
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Xi H, Mao Y, Wang X, Zeng Q, Feng Y. Allogeneic bone marrow mesenchymal stem cells over-expressing gap junction protein connexin 43 reduce ventricular arrhythmias following myocardial infarction in rats. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Wang G, Fu B, Sun T, Cui S, Cao R, Feng L, Xiong L, Wang D, Xie P, Xi H. UP-1.004: Retroperitoneoscopic Versus Open Surgical Renal Pedicle Lymphatic Dissection for Chyluria: A Ten-Year Experience. Urology 2009. [DOI: 10.1016/j.urology.2009.07.451] [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: 10/20/2022]
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32
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Fu B, Wang G, Sun T, Cui S, Cao R, Feng L, Xi H, Chen Q, Xiong J. MP-05.12: Three-Stage Training Model for Laparoscopic Nephron-Sparing Nephrectomy. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1015] [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: 10/20/2022]
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33
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Fu B, Wang G, Cui S, Sun T, Cao R, Feng L, Sun X, Chen J, Xi H, Chen Q, Zhong K, Kuang R. MP-04.05: Extraperitoneal Laparoscopic Surgery for the Treatment of Lower Ureteral Disease. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1027] [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: 11/29/2022]
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34
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Fu B, Wang G, Sun T, Cao R, Cui S, Feng L, Sun X, Xi H, Chen J, Chen Q. MP-04.03: Anatomical Retroperitoneoscopic Adrenalectomy: Initial Experience in 60 Cases. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1025] [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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35
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Fu B, Wang G, Cui S, Sun T, Cao R, Feng L, Kuang R, Xi H, Chen Q, Zhong Z, Sun X, Chen J, Xiong L, Wang D, Xie P, Liu T. UP-1.023: Retroperitoneal Laparoscopic Surgery for the Treatment of Large Adrenal Tumors. Urology 2009. [DOI: 10.1016/j.urology.2009.07.470] [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: 10/20/2022]
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36
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Fu B, Wang G, Sun T, Cui S, Cao R, Feng L, Chen W, Xi H. MP-04.04: Techniques for Reducing Renal Warm Ischemia Time for Laparoscopic Nephron-Sparing Surgery. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1026] [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: 10/20/2022]
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37
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Yu L, Tao J, Sun Y, Xi H, Huang J, Ediger M. What do polymorphs teach us about crystal nucleation and growth? Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308095639] [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: 11/10/2022] Open
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38
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Ling FC, Baldus SE, Khochfar J, Xi H, Neiss S, Brabender J, Metzger R, Drebber U, Dienes HP, Bollschweiler E, Hoelscher AH, Schneider PM. Association of COX-2 expression with corresponding active and chronic inflammatory reactions in Barrett's metaplasia and progression to cancer. Histopathology 2007; 50:203-9. [PMID: 17222248 DOI: 10.1111/j.1365-2559.2007.02576.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AIMS Risk reduction for Barrett's cancer in individuals taking non-steroidal anti-inflammatory drugs has been reported. Cyclooxygenase (COX)-2, one of the inhibited enzymes, is putatively involved in Barrett's cancer pathogenesis. The aim of this study was to examine a possible association between COX-2 protein expression and the development and progression of the Barrett's metaplasia-dysplasia-carcinoma sequence and the type and degree of associated inflammatory reaction. METHODS AND RESULTS Squamous epithelium, metaplastic, low-grade, high-grade dysplastic lesions and tumour tissue of 49 resection specimens from patients with Barrett's adenocarcinoma were immunohistochemically analysed. Active and chronic inflammatory reactions were classified according to the Updated Sydney System. Within the Barrett's sequence, a significant progressive increase in COX-2 expression was identified (P < 0.0001). The most significant differences were detected between squamous epithelium and Barrett's metaplasia (P < 0.001) and from low- to high-grade dysplasia (P < 0.0001). Active and chronic inflammation were significantly different between squamous epithelium and Barrett's metaplasia (P < 0.0001), but not during further progression in the sequence. CONCLUSIONS Increasing COX-2 expression in Barrett's metaplasia is significantly associated with a change in the local inflammatory reaction, but not during further progression through dysplasia to cancer. This supports the potential of a chemoprevention strategy using COX-2 inhibitors independent of the extent and type of the inflammatory reaction in Barrett's oesophagus.
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Affiliation(s)
- F C Ling
- Department of Visceral and Vascular Surgery, University of Cologne, Cologne [corrected] Germany
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39
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Xi H, Akishita M, Nagai K, Yu W, Hasegawa H, Eto M, Kozaki K, Toba K. Potent free radical scavenger, edaravone, suppresses oxidative stress-induced endothelial damage and early atherosclerosis. Atherosclerosis 2006; 191:281-9. [PMID: 16806227 DOI: 10.1016/j.atherosclerosis.2006.05.040] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Revised: 05/09/2006] [Accepted: 05/19/2006] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Effects of potent free radical scavenger, edaravone, on oxidative stress-induced endothelial damage and early atherosclerosis were investigated using animal models and cultured cells. METHODS AND RESULTS Endothelial apoptosis was induced by 5-min intra-arterial exposure of a rat carotid artery with 0.01 mmol/L H(2)O(2). Edaravone treatment (10mg/kg i.p.) for 3 days suppressed endothelial apoptosis, as evaluated by chromatin staining of en face specimens at 24h, by approximately 40%. Similarly, edaravone dose-dependently inhibited H(2)O(2)-induce apoptosis of cultured endothelial cells in parallel with the inhibition of 8-isoprostane formation, 4-hydroxy-2-nonenal (4-HNE) accumulation and VCAM-1 expression. Next, apolipoprotein-E knockout mice were fed a high-cholesterol diet for 4 weeks with edaravone (10mg/kg i.p.) or vehicle treatment. Edaravone treatment decreased atherosclerotic lesions in the aortic sinus (0.18+/-0.01 to 0.09+/-0.01 mm(2), P<0.001) and descending aorta (5.09+/-0.86 to 1.75+/-0.41 mm(2), P<0.05), as evaluated by oil red O staining without influence on plasma lipid concentrations or blood pressure. Dihydroethidium labeling and cytochrome c reduction assay showed that superoxide anions in the aorta were suppressed by edaravone. Also, plasma 8-isoprostane concentrations and aortic nitrotyrosine, 4-HNE and VCAM-1 contents were decreased by edaravone treatment. CONCLUSIONS These results suggest that edaravone may be a useful therapeutic tool for early atherosclerosis, pending the clinical efficacy.
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Affiliation(s)
- Hang Xi
- Department of Geriatric Medicine, Kyorin University School of Medicine, Tokyo, Japan
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40
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Yu W, Akishita M, Xi H, Nagai K, Sudoh N, Hasegawa H, Kozaki K, Toba K. Angiotensin converting enzyme inhibitor attenuates oxidative stress-induced endothelial cell apoptosis via p38 MAP kinase inhibition. Clin Chim Acta 2006; 364:328-34. [PMID: 16150432 DOI: 10.1016/j.cca.2005.07.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 05/11/2005] [Revised: 07/22/2005] [Accepted: 07/29/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND The effects of angiotensin converting enzyme (ACE) inhibitors on oxidative stress-induced apoptosis of endothelial cells and the intracellular signaling were investigated. METHODS Cultured endothelial cells derived from a bovine carotid artery were treated with H2O2 or TNF-alpha to induce apoptosis. Apoptosis was evaluated by DNA fragmentation and cell viability, p38 MAP kinase activity by Western blotting, and oxidative stress by formation of 8-isoprostane. The effects of ACE inhibitors were examined by adding them into the medium throughout the experiments. RESULTS Apoptosis was attenuated by ACE inhibitors, temocapril and captopril, in a dose-dependent manner (1-100 micromol/l). H2O2 (0.2 mmol/l for 1.5 h) or TNF-alpha (10 ng/ml for 72 h) treatment stimulated the activities of p38 MAP kinase. Temocapril and captopril decreased the activity of p38 MAP kinase as well as 8-isoprostane formation induced by H2O2. A p38 MAP kinase inhibitor, SB203580, partially inhibited the effect of temocapril on apoptosis. CONCLUSIONS These results suggest that ACE inhibitors protect endothelial cells from oxidative stress-induced apoptosis, and that p38 MAP kinase plays a critical role in the process.
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Affiliation(s)
- Wei Yu
- Department of Geriatric Medicine, Kyorin University School of Medicine, Tokyo, Japan
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41
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Toyo-oka T, Kawada T, Xi H, Nakazawa M, Masui F, Hemmi C, Nakata J, Tezuka A, Iwasawa K, Urabe M, Monahan J, Ozawa K. Gene therapy prevents disruption of dystrophin-related proteins in a model of hereditary dilated cardiomyopathy in hamsters. Heart Lung Circ 2006; 11:174-81. [PMID: 16352094 DOI: 10.1046/j.1444-2892.2002.00151.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The TO-2 hamster is an animal model of dilated cardiomyopathy (DCM). It has genetic and clinical features in common with humans who carry the gene deletion or mutation of the delta-sarcoglycan (SG) gene, a component in dystrophin-related proteins (DRP). DRP stabilise the sarcolemma during cardiac contraction. We performed in vivo gene therapy of the TO-2 hamster, whose heart is defective in all four SG proteins, to determine its potential as a model for therapy for DCM. In addition to the hereditary origin, heart failure is aggravated by treatment with catecholamines and ameliorated by the administration of some kinds of beta-antagonist both in humans and in TO-2 hamsters. METHODS Gene therapy for DCM was achieved by supplementing the delta-SG gene with rAAV vector and intramurally delivering rAAV-delta-SG into the cardiac apex and left ventricle. RESULTS This treatment resulted in: (i) a sustained and non-pathogenic expression of both the transcript and transgene of delta-SG and all other SG proteins; (ii) improvement to both morphological and physiological deterioration; and (iii) rescued prognosis compared with untreated TO-2 hamsters, and TO-2 hamsters transfected with reporter gene alone. Another acute heart-failure model was prepared by high-dose isoproterenol treatment in Wistar rats, which resulted in: (i) translocation of dystrophin, but not delta-SG, from the cardiac sarcolemma to the myoplasm; and (ii) fragmentation of dystrophin, probably due to the activation of endogenous protease(s) or proteasome(s) that contributed to muscular dystrophy-like degeneration occurring specifically in cardiomyocytes. CONCLUSIONS Both the TO-2 hamster and the isoproterenol-treated Wistar rat models commonly experience disruption of dystrophin or DRP. Targeting the responsible gene with the use of a potent vector may provide a novel strategy for the treatment of advanced heart failure.
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Affiliation(s)
- Teruhiko Toyo-oka
- Department of Organ Pathophysiology and Internal Medicine, University of Tokyo, Tokyo, Japan.
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Richter A, Pladevall M, Manjunath R, Lafata JE, Xi H, Simpkins J, Brar I, Markowitz N, Iloeje UH, Irish W. Patient characteristics and costs associated with dyslipidaemia and related conditions in HIV-infected patients: a retrospective cohort study. HIV Med 2005; 6:79-90. [PMID: 15807713 DOI: 10.1111/j.1468-1293.2005.00269.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Metabolic abnormalities are common in HIV-infected individuals and, although multifactorial in origin, have been strongly associated with antiretroviral therapy. METHODS Using automated claims and clinical databases, combined with medical record data, we evaluated the burden of dyslipidaemia (DYS) and associated metabolic abnormalities among a cohort of 900 HIV-infected patients aged 18 years and older who received their care from a large multispecialty medical group between 1 January 1996 and 30 June 2002. A Cox proportional hazards model for DYS was developed. Resource use was compiled and subsequently costed with stratification to account for variable length of follow-up. RESULTS Mean follow-up time was 3.3 years. DYS was present in 54% of the cohort and 3.4% experienced a cardiovascular (CV) event. Both unadjusted and adjusted results found patients with dyslipidaemia and cardiovascular events significantly more likely to have received protease inhibitor (PI) treatment for longer periods of time. In the Cox proportional hazards model the following factors were significantly associated with an increased risk for DYS: older age, white race, PI use and male sex. Diagnoses of hypertension, hepatitis C virus infection, depression or opportunistic infections were all negatively associated with a DYS diagnosis. When controlled for length of follow up, patients with DYS (and no CV-related events) incurred greater median and mean total average costs than patients without DYS or CV-related events. For patients with more than 2 years of follow up, these total cost differences were statistically significant (P<0.05). CONCLUSIONS These findings indicate that DYS is common among patients with HIV infection and is associated with increased use of medical resources.
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Affiliation(s)
- A Richter
- Defences Resources Management Institute, Naval Postgraduate School, Monterey, CA 93943, USA.
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43
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Abstract
Aminoglycosides, traditional RNA binders, were found to be a new class of triple helical nucleic acid-stabilizing ligands. Neomycin, of all the aminoglycosides, has shown the most significant effects in stabilizing DNA, RNA, and hybrid triple helices. When compared with minor groove binders or intercalators, neomycin excels at triple helical stabilization in most cases. Molecular modeling studies suggest that neomycin reaches into the larger Watson-Hoogsteen groove. The charge and shape complementarity are the key factors in neomycin-triplex recognition. By conjugating neomycin with intercalators such as BQQ (a potent triple helix intercalating agent designed by Hélène), we have progressed in developing more potent triple helix stabilizing ligands. The design of such dual or even triple recognition ligands opens a new paradigm for recognition of triple helix nucleic acids. The article herein presents studies of neomycin as the first molecule that can selectively stabilize nucleic acid triplex structures. These studies are supported by our recent discovery that neomycin prefers to bind to A-like conformations, of which triple helix structures are known to display some characteristics. These findings will contribute to the development of a new series of triplex-specific ligands, and may contribute to either antisense or antigene therapies.
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Affiliation(s)
- H Xi
- Laboratory of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina, 29634, USA
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Akishita M, Nagai K, Xi H, Yu W, Sudoh N, Watanabe T, Ohara-Imaizumi M, Nagamatsu S, Kozaki K, Horiuchi M, Toba K. Renin-Angiotensin System Modulates Oxidative Stress–Induced Endothelial Cell Apoptosis in Rats. Hypertension 2005; 45:1188-93. [PMID: 15867141 DOI: 10.1161/01.hyp.0000165308.04703.f2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The role of the renin-angiotensin system in oxidative stress–induced apoptosis of endothelial cells (ECs) was investigated using a rat model and cultured ECs. EC apoptosis was induced by 5-minute intra-arterial treatment of a rat carotid artery with 0.01 mmol/L H
2
O
2
and was evaluated at 24 hours by chromatin staining of
en face
specimens with Hoechst 33342. Although activity of angiotensin-converting enzyme in arterial homogenates was not increased, administration of an angiotensin-converting enzyme inhibitor temocapril for 3 days before H
2
O
2
treatment inhibited EC apoptosis, followed by reduced neointimal formation 2 weeks later. Also, an angiotensin II type 1 (AT1) receptor blocker (olmesartan) inhibited EC apoptosis, whereas angiotensin II administration accelerated apoptosis independently of blood pressure. Next, cultured ECs derived from a bovine carotid artery were treated with H
2
O
2
to induce apoptosis, as evaluated by DNA fragmentation. Combination of angiotensin II and H
2
O
2
dose-dependently increased EC apoptosis and 8-isoprostane formation, a marker of oxidative stress. Conversely, temocapril and olmesartan reduced apoptosis and 8-isoprostane formation induced by H
2
O
2
, suggesting that endogenous angiotensin II interacts with H
2
O
2
to elevate oxidative stress levels and EC apoptosis. Neither an AT2 receptor blocker, PD123319, affected H
2
O
2
-induced apoptosis, nor a NO synthase inhibitor,
N
G
-nitro-
l
-arginine methyl ester, influenced the effect of temocapril on apoptosis in cell culture experiments. These results suggest that AT1 receptor signaling augments EC apoptosis in the process of oxidative stress–induced vascular injury.
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Affiliation(s)
- Masahiro Akishita
- Department of Geriatric Medicine, Kyorin University School of Medicine, Tokyo, Japan.
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45
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Williams L, Pladevall M, Xi H, Peterson E, Joseph C, Elston Lafata J, Ownby D, Johnson C. Relationship between adherence to inhaled corticosteroids and poor outcomes among adults with asthma. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.1102] [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: 10/25/2022]
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46
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Xi H, Goodwin B, Shepherd AT, Blanck G. Impaired class II transactivator expression in mice lacking interferon regulatory factor-2. Oncogene 2001; 20:4219-27. [PMID: 11464288 DOI: 10.1038/sj.onc.1204556] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2000] [Revised: 04/12/2001] [Accepted: 04/18/2001] [Indexed: 11/09/2022]
Abstract
Class II transactivator (CIITA) is required for both constitutive and inducible expression of MHC class II genes. IFN-gamma induced expression of CIITA in various cell types is directed by CIITA type IV promoter. The two transactivators, STAT1 and IRF-1, mediate the IFN-gamma activation of the type IV promoter by binding to the GAS and IRF-E of the promoter, respectively. In addition to IRF-1, IRF-2, another member of the IRF family, also activates the human CIITA type IV promoter, and IRF-2 cooperates with IRF-1 to activate the promoter in transient transfection assays. IRF-1 and IRF-2 can co-occupy the IRF-E of the human CIITA type IV promoter. To understand the effect of loss of IRF-2 on the endogenous CIITA expression, we assayed for CIITA expression in IRF-2 knock-out mice. Both basal and IFN-gamma induced CIITA expression were reduced in IRF-2 knock-out mice. At least half of the amount of inducible CIITA mRNA depends on IRF-2. The reduction of IFN-gamma induced CIITA mRNA in IRF-2 knock-out mice was due to the reduction of the type IV CIITA mRNA induction. The reduction of basal CIITA mRNA was apparently due to the reduction of CIITA mRNA originating from other promoters. These data indicate that IRF-2, like IRF-1, plays a critical role in the regulation of the endogenous CIITA gene. The implications in understanding the previously described phenotypes of IRF-2 defective mice are discussed.
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Affiliation(s)
- H Xi
- Department of Biochemistry and Molecular Biology, College of Medicine, University of South Florida, Tampa, Florida, FL33612, USA
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47
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Goodwin BL, Xi H, Tejiram R, Eason DD, Ghosh N, Wright KL, Nagarajan U, Boss JM, Blanck G. Varying functions of specific major histocompatibility class II transactivator promoter III and IV elements in melanoma cell lines. Cell Growth Differ 2001; 12:327-35. [PMID: 11432807] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
Melanoma cells commonly express MHC class II molecules constitutively. This is a rare, or possibly unique, phenotype for a nonprofessional antigen-presenting cell, where MHC class II expression ordinarily occurs only after IFN-gamma treatment. Despite the fact that constitutive expression of MHC class II on melanoma cells has been observed for decades and that the regulation of the MHC class II genes is well understood for many different cell types, there is no data regarding the basis for constitutive MHC class II expression in melanoma cells. Here we report that MHC class II expression in melanoma cells can be traced to constitutive expression of the class II transactivator protein (CIITA), which mediates both IFN-gamma-inducible and -constitutive MHC class II expression in all other cell types. In addition, we determined that constitutive CIITA expression is the result of the activation of both the B cell-specific CIITA promoter III and the IFN-gamma-inducible CIITA promoter IV, the latter of which previously has never been known to function as a constitutive promoter in any cell type. The recently described B cell-related ARE-1 activity is important for promoter III activation in the melanoma cells. Constitutive promoter IV activation involves the IFN regulatory factor element (IRF-E), which binds members of the IRF family of proteins, although the major, IFN-gamma inducible member of this family, IRF-1, is not constitutively expressed in these cells. In cells with constitutively active promoter IV, the promoter IV IRF-E is most likely activated by IRF-2. The relevance of these results to the pathway of melanoma development is discussed.
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Affiliation(s)
- B L Goodwin
- Department of Biochemistry and Molecular Biology, College of Medicine and Immunology Program, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida, Tampa, Florida 33612, USA
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Lafata JE, Martin S, Morlock R, Divine G, Xi H. Provider type and the receipt of general and diabetes-related preventive health services among patients with diabetes. Med Care 2001; 39:491-9. [PMID: 11317097 DOI: 10.1097/00005650-200105000-00009] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Using a measure of provider type that includes "shared care" to determine the contribution of provider type on receipt of general and diabetes-related preventive health services. METHODS Automated clinical and administrative data were used to identify adult patients with type 1 and 2 diabetes receiving care from a multispecialty, salaried group practice and enrolled in a large health maintenance organization between 3/97 and 2/98 (n = 10,991). Logistic regression models were fit using generalized estimating equation approaches to evaluate the contribution of provider type on service receipt. MEASURES Preventive service receipt included receipt of glycated hemoglobin and lipid testing, retinal examinations, pneumococcal vaccines, Papanicolaou (Pap) smears, and mammograms. Multivariable analyses adjusted for age, sex, race, marital status, household income, diabetes-related comorbidities and complications, prescription drug use, laboratory testing results, and frequency of medical care contact. RESULTS Patients seeing an endocrinologist and primary care physician (PCP) were more likely than those seeing endocrinologists alone to receive glycated hemoglobin testing (OR, 1.42), lipid testing (OR, 1.72), mammograms (OR, 2.12), and Pap smears (OR, 2.36), and more likely than those seeing PCPs alone to receive glycated hemoglobin testing (OR, 1.79), lipid testing (OR, 1.54), retinal examinations (OR, 1.33), and mammograms (OR, 1.43). Compared with patients seeing PCPs only, patient's seeing endocrinologists only were more likely to receive retinal examinations (OR, 1.37) and less likely to receive Pap smears (OR, 0.46). CONCLUSIONS Care delivered by no one single provider type is associated with greater receipt of all recommended services. Instead, patients seeing both an endocrinologist and a PCP are most likely to receive recommended services.
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Affiliation(s)
- J E Lafata
- Henry Ford Health System, Detroit, Michigan, USA.
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Xi H, Shin WS, Suzuki J, Nakajima T, Kawada T, Uehara Y, Nakazawa M, Toyo-oka T. Dystrophin disruption might be related to myocardial cell apoptosis caused by isoproterenol. J Cardiovasc Pharmacol 2001; 36 Suppl 2:S25-9. [PMID: 11206716 DOI: 10.1097/00005344-200000006-00007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sarcolemma integrity is stabilized by the dystrophin-associated glycoprotein complex that connects actin and laminin-2 in contractile machinery and the extracellular matrix, respectively. Interruption of the connection by the primary gene defect or acquired pathological burden can cause cardiac failure. The purposes of the present study were to verify whether dystrophin is disrupted in acute myocardial injury after the isoproterenol overload (10 mg/kg) and to examine its relation to myocardial cell apoptosis in rats. This injury from 4-16 h at the subendocardium was accompanied by dystrophin disruption and dislocation from subsarcolemma to cytoplasm, which were confirmed by immunohistology and Western blotting. However, delta-sarcoglycan was thoroughly preserved in sarcolemma. The dystrophin degradation preceded the appearance of apoptotic cells and exactly coincided with the transferase-mediated dUTP-biotin nick end labeling-positive cardiomyocytes (TUNEL), as was verified by double-staining. These data suggest that beta-adrenergic stimulation induces dystrophin breakdown followed by apoptosis.
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Affiliation(s)
- H Xi
- Department of Internal Medicine, Tokyo University Hospital, University of Tokyo, Japan
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Abstract
Escherichia coli is not known to utilize purines, other than adenine and adenosine, as nitrogen sources. We reinvestigated purine catabolism because a computer analysis suggested several potential sigma(54)-dependent promoters within a 23-gene cluster whose products have homology to purine catabolic enzymes. Our results did not provide conclusive evidence that the sigma(54)-dependent promoters are active. Nonetheless, our results suggest that some of the genes are metabolically significant. We found that even though several purines did not support growth as the sole nitrogen source, they did stimulate growth with aspartate as the nitrogen source. Cells produced (14)CO(2) from minimal medium containing [(14)C]adenine, which implies allantoin production. However, neither ammonia nor carbamoyl phosphate was produced, which implies that purine catabolism is incomplete and does not provide nitrogen during nitrogen-limited growth. We constructed strains with deletions of two genes whose products might catalyze the first reaction of purine catabolism. Deletion of one eliminated (14)CO(2) production from [(14)C]adenine, which implies that its product is necessary for xanthine dehydrogenase activity. We changed the name of this gene to xdhA. The xdhA mutant grew faster with aspartate as a nitrogen source. The mutant also exhibited sensitivity to adenine, which guanosine partially reversed. Adenine sensitivity has been previously associated with defective purine salvage resulting from impaired synthesis of guanine nucleotides from adenine. We propose that xanthine dehydrogenase contributes to this purine interconversion.
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Affiliation(s)
- H Xi
- Department of Molecular and Cell Biology, The University of Texas at Dallas, Richardson, Texas 75083-0688, USA
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