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Wang L, Pang X, Ding S, Pei K, Li Z, Wan J. Effect of postoperative oxygen therapy regimen modification on oxygenation in patients with acute type A aortic dissection. Heliyon 2024; 10:e29108. [PMID: 38638990 PMCID: PMC11024556 DOI: 10.1016/j.heliyon.2024.e29108] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/20/2024] Open
Abstract
Objective In this study, we investigated the effect of various oxygen therapy regimens on oxygenation in patients with acute type A aortic dissection (AAD). Methods A quasi-randomized controlled trial was conducted, in which patients with AAD hospitalized for surgery from June to September 2021 were assigned to the control group (patients received conventional oxygen therapy after postoperative mechanical ventilation, weaning, and extubation) and those who were admitted from October to December 2021 were assigned to the observation group [patients underwent optimally adjusted therapy based on the treatment of the control group, which mainly included prioritized elevation of positive end-expiratory pressure (PEEP) and restricted use of the fraction of inspired oxygen (FiO2)].The postoperative oxygenation index, blood gas analysis, and duration of mechanical ventilation were compared between the two groups. Results There were significant differences in oxygenation observed at 2 h postoperatively between the groups. 12, 24, and 72 h postoperatively, the oxygenation index varied significantly between the two groups. There were statistically significant differences in the time effects of the oxygenation index and PaO2 between the two groups, as well as significant differences in the length of stay in the intensive care unit. Conclusion For the postoperative care of patients with AAD, it is suggested that the minimum FiO2 required for oxygenation of patients be maintained. In addition, it is possible to enhance PEEP as a priority when PaO2 is low.
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Affiliation(s)
- Li Wang
- Department of Hospital Infection Control, The Second Hospital of Shandong University, Jinan, 250033, PR China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, 250033, PR China
| | - Shouluan Ding
- Institute of Medicine Sciences, The Second Hospital of Shandong University, Jinan, 250033, PR China
| | - Ke Pei
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, 250033, PR China
| | - Zijia Li
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, 250033, PR China
| | - Jianhong Wan
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, 250033, PR China
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Bai W, Guo T, Wang H, Li B, Sun Q, Wu W, Zhang J, Zhou J, Luo J, Zhu M, Lu J, Li P, Dong B, Han S, Pang X, Zhang G, Bai Y, Wang S. S-nitrosylation of AMPKγ impairs coronary collateral circulation and disrupts VSMC reprogramming. EMBO Rep 2024; 25:128-143. [PMID: 38177907 PMCID: PMC10897329 DOI: 10.1038/s44319-023-00015-3] [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: 07/07/2022] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 01/06/2024] Open
Abstract
Collateral circulation is essential for blood resupply to the ischemic heart, which is dictated by the contractile phenotypic restoration of vascular smooth muscle cells (VSMC). Here we investigate whether S-nitrosylation of AMP-activated protein kinase (AMPK), a key regulator of the VSMC phenotype, impairs collateral circulation. In rats with collateral growth and development, nitroglycerin decreases coronary collateral blood flow (CCBF), inhibits vascular contractile phenotypic restoration, and increases myocardial infarct size, accompanied by reduced AMPK activity in the collateral zone. Nitric oxide (NO) S-nitrosylates human recombinant AMPKγ1 at cysteine 131 and decreases AMP sensitivity of AMPK. In VSMCs, exogenous expression of S-nitrosylation-resistant AMPKγ1 or deficient NO synthase (iNOS) prevents the disruption of VSMC reprogramming. Finally, hyperhomocysteinemia or hyperglycemia increases AMPKγ1 S-nitrosylation, prevents vascular contractile phenotypic restoration, reduces CCBF, and increases the infarct size of the heart in Apoe-/- mice, all of which is rescued in Apoe-/-/iNOSsm-/- mice or Apoe-/- mice with enforced expression of the AMPKγ1-C130A mutant following RI/MI. We conclude that nitrosative stress disrupts coronary collateral circulation during hyperhomocysteinemia or hyperglycemia through AMPK S-nitrosylation.
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Affiliation(s)
- Wenwu Bai
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Tao Guo
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Han Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
| | - Bin Li
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Quan Sun
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wanzhou Wu
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jiaxiong Zhang
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jipeng Zhou
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jingmin Luo
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Moli Zhu
- School of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Medical University, Xinxiang, Henan, China
| | - Junxiu Lu
- School of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Medical University, Xinxiang, Henan, China
| | - Peng Li
- School of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Medical University, Xinxiang, Henan, China
| | - Bo Dong
- Department of Cardiology, Shandong Provincial Hospital, Jinan, Shandong, China
| | - Shufang Han
- Department of Cardiology, The 960th Hospital of PLA Joint Logistics Support Force, Jinan, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Guogang Zhang
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yongping Bai
- Department of Geriatric Medicine and Coronary Circulation Center, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.
- School of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Medical University, Xinxiang, Henan, China.
| | - Shuangxi Wang
- National Key Laboratory for Innovation and Transformation of Luobing Theory; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences; Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.
- Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
- School of Pharmacy, Henan International Joint Laboratory of Cardiovascular Remodeling and Drug Intervention, Xinxiang Medical University, Xinxiang, Henan, China.
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He M, Wang Z, Yang H, Wang Q, Xiang D, Pang X, Chan YK, Sun D, Yin G, Yang W, Deng Y. Multi-Functional Bio-HJzyme: Revolutionizing Diabetic Skin Regeneration with its Glucose-Unlocked Sterilization and Programmed Anti-Inflammatory Effects. Adv Sci (Weinh) 2023:e2300986. [PMID: 37162227 PMCID: PMC10375093 DOI: 10.1002/advs.202300986] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/18/2023] [Indexed: 05/11/2023]
Abstract
Antibacterial dynamic therapy (ADT) triggered by reactive oxygen species (ROS) is promising for diabetic infectious disease treatment. However, the limited local O2 /H2 O2 production and post-treatment inflammation remain long-standing issues. To address these challenges, a novel H2 -evolving bio-heterojunction enzyme (Bio-HJzyme) consisting of graphite-phase carbon nitride/copper sulfide (CN/Cu2-x S) heterojunction and glucose oxidase (GOx) is created. The Bio-HJzyme offers glutathione peroxidase (GPx), peroxidase (POD), and catalase (CAT) mimetic activities; provides anti-pathogen properties via programmed light activation; and effectively promotes diabetic wound healing. Specifically, its GPx-mimetic activity and the presence of GOx significantly enhance the yield of H2 O2 , which can be catalyzed through POD-mimetic activity to produce highly germicidal •OH. The H2 O2 can also be catalyzed to H2 O and O2 , assisted by the CAT-mimetic activity. The catalyzed products can then be catalyzed into germicidal •OH and •O2 - under NIR light irradiation, giving enhanced ADT. Further, CN can split water to form H2 under solar light, which dramatically suppresses the inflammation caused by excessive ROS. In vivo evaluation confirms that Bio-HJzyme promotes the regeneration of diabetic infectious skin through killing bacteria, enhancing angiogenesis, promoting wound bed epithelialization, and reinforcing anti-inflammatory responses; hence, providing a revolutionary approach for diabetic wounds healing.
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Affiliation(s)
- Miaomiao He
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Zuyao Wang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Hang Yang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Qiancun Wang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Danni Xiang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Xinyan Pang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yau Kei Chan
- Department of Ophthalmology, The University of Hong Kong, Hong Kong SAR, 999077, China
| | - Dan Sun
- Advanced Composite Research Group (ACRG), School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast, BT9 5AH, UK
| | - Guangfu Yin
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Weizhong Yang
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
| | - Yi Deng
- College of Biomedical Engineering, School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR, 999077, China
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Ma YH, Gao XZ, Zhang YP, Pang X, Huang P, Li WC. [Small intestinal metastatic alveolar soft part sarcoma: report of two cases]. Zhonghua Bing Li Xue Za Zhi 2023; 52:512-514. [PMID: 37106298 DOI: 10.3760/cma.j.cn112151-20220823-00716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Affiliation(s)
- Y H Ma
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Z Gao
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y P Zhang
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Pang
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - P Huang
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W C Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Fang C, Gao S, Ren X, Pang X, Zhao X, Ma Z, Wang C, Liu K. Comparison of two techniques in proximal anastomosis in acute type A aortic dissection. Front Cardiovasc Med 2022; 9:1047939. [PMID: 36386353 PMCID: PMC9643206 DOI: 10.3389/fcvm.2022.1047939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/10/2022] [Indexed: 11/27/2022] Open
Abstract
Background The proximal anastomosis is an important procedure during the acute type A aortic dissection (AAAD) surgery. The conventional method is a double patch sandwich technique with Teflon felt. Adventitial eversion and prosthesis eversion technique as a novel approach has been applied to many patients in our center. Herein, This technique would be introduced, and the perioperative and 1-year follow-up results of the two different anastomosis methods were also evaluated. Methods Between December 2017 and May 2021, 143 AAAD patients who underwent total arch replacement (TAR) and frozen elephant trunk (FET) implantation were included in this retrospective study. Patients were divided into the eversion technique group (adventitial eversion and prosthesis eversion technique for proximal anastomosis, n = 64) and the sandwich technique group (n = 79). Results The medical records were analyzed and compared between the groups. The mean operation time was 466 ± 73 min in the eversion technique group and 513 ± 81 min in the sandwich technique group (P < 0.001). Compared with the sandwich technique group, the eversion technique group also showed a shorter time on proximal anastomosis (38 ± 12 min vs. 58 ± 20 min, P < 0.001), cardiopulmonary bypass (195 ± 26 vs. 211 ± 40 min, P = 0.003), and aortic cross-clamp (120 ± 23 min vs. 134 ± 27 min, P = 0.002). Furthermore, a decreased proportion of >600 ml fresh frozen plasmas transfusion was observed in eversion technique group (10.9% vs. 34.2%, P = 0.002). No statistical differences were found in the postoperative morbidities and 1-year follow-up outcomes. Conclusion Proximal anastomosis with adventitial eversion and prosthesis eversion technique is a promising surgical option for AAAD patients, with favorable perioperative and 1-year follow-up results.
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Affiliation(s)
- Changcun Fang
- Department of Cardiovascular Surgery, Thoracoscopy Institute of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Shan Gao
- Department of Anesthesia, Zhangqiu People’s Hospital, Jinan, China
| | - Xiao Ren
- Department of Extracorporeal Circulation, Wuhan Asia Heart Hospital, Wuhan, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, China
| | - Xin Zhao
- Department of Cardiovascular Surgery, Thoracoscopy Institute of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Zengshan Ma
- Department of Cardiovascular Surgery, Thoracoscopy Institute of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Chen Wang
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, China
| | - Kai Liu
- Department of Cardiovascular Surgery, Thoracoscopy Institute of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, China
- *Correspondence: Kai Liu,
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Min J, Huang Z, Pang X, Zhong T, Jin C, Chen N, Xia D, Zhang P, Wang Z, Xia Y, Li B. 486P AK130, a first-in-class Fc-mutant anti-TIGIT antibody fused with TGF-βRII protein, elicits potent anti-tumor efficacy in pre-clinical studies. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.614] [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: 11/26/2022] Open
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Lin X, Zeng C, Pang X, Zhu C, Liu C, Yang X, Hu Y, Fang Z, Guo K. Electrochemical Synthesis of Selenium‐substituted Benzoxazine
via
Radical Initiated Cyclization. ChemElectroChem 2021. [DOI: 10.1002/celc.202101013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xinxin Lin
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Cuilian Zeng
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Xinyan Pang
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Chenlong Zhu
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Chengkou Liu
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Xiaobing Yang
- Department: China Biology and Medicine Department Institution: Jiangsu Industrial Technology Research Institute Nanjing 210031 P.R. China
| | - Yujing Hu
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
| | - Zheng Fang
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
- Department: State Key Laboratory of Materials-Oriented Chemical Engineering Institution: Nanjing Tech University Address 2 30 Puzhu Rd S. Nanjing 211816 China
| | - Kai Guo
- Department: College of Biotechnology and Pharmaceutical Engineering Institution: Nanjing Tech University 30 Puzhu Rd S. Nanjing 211816 China
- Department: State Key Laboratory of Materials-Oriented Chemical Engineering Institution: Nanjing Tech University Address 2 30 Puzhu Rd S. Nanjing 211816 China
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Li B, Huang Z, Pang X, Zhong T, Jin C, Chen N, Ma S, He X, Xia D, Jin X, Wang Z, Xia Y. 2O Penpulimab, an IgG1 anti-PD-1 antibody with Fc-engineering to eliminate effector functions and with unique epitope and binding properties. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Pang X, Qiu S, Wang C, Liu K, Zhao X, Fang C. Endovascular Aortic Repair With Castor Single-Branched Stent-Graft in Treatment of Acute Type B Aortic Syndrome and Aberrant Right Subclavian Artery. Vasc Endovascular Surg 2021; 55:551-559. [PMID: 33764219 DOI: 10.1177/15385744211005664] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE In this retrospective study, we presented the results of Castor single-branched stent-graft in a small series of patients with acute type B aortic syndrome and aberrant right subclavian artery (ARSA). METHODS Between January 2019 and November 2019, 5 patients were diagnosed with acute type B aortic syndrome and ARSA (4 patients with intramural hematoma and ARSA, 1 patient with type B aortic dissection and ARSA). All the patients underwent thoracic endovascular aortic repair (TEVAR) using Castor single-branched stent-graft. In-hospital and 3-month outcomes were collected. RESULTS The mean operative time was 116 ± 20.43 minutes (range 90-145). All the TEVAR procedures were successfully performed without conversion to open surgery (100% success rate). All the ARSAs of the 5 patients were revascularized in situ by Castor single-branched stent-grafts. No deaths and complications were observed in the 3-month follow-up. The maximal diameters of diseased aortas in the 4 patients with IMH decreased 3 months after TEVAR. The false lumen in the graft-covered segment was completely thrombosed in the patient with type B aortic dissection. CONCLUSIONS Castor single-branched stent-graft may be a good choice in treatment of acute type B aortic syndrome and aberrant right subclavian artery.
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Affiliation(s)
- Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shi Qiu
- Department of Cardiovascular Surgery, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Chen Wang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Kai Liu
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xin Zhao
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Li LF, Wang ZB, Han CG, Sun HQ, Wang R, Ren YL, Lin JQ, Pang X, Liu XM, Lin JQ, Chen LX. Optimal reference genes for real-time quantitative PCR and the expression of sigma factors in Acidithiobacillus caldus under various conditions. J Appl Microbiol 2021; 131:1800-1812. [PMID: 33754423 DOI: 10.1111/jam.15085] [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: 10/28/2020] [Revised: 03/02/2021] [Accepted: 03/18/2021] [Indexed: 12/01/2022]
Abstract
AIMS Acidithiobacillus caldus is an important sulphur-oxidizing bacterium that plays crucial roles in the bioleaching industry. This study aims to analyse the optimal reference gene for real-time quantitative PCR (RT-qPCR) under different conditions and investigate the transcription levels of the sigma factor genes in the stress response. METHODS AND RESULTS We selected six housekeeping genes and analysed them via RT-qPCR using two energy resources, under four stress conditions. Three statistical approaches BestKeeper, geNorm, and NormFinder were utilized to determine transcription stability of these reference genes. The gapdH gene was the best internal control gene using elemental sulphur as an energy resource and under heat stress, map was the best internal control gene under pH and osmotic stress, era was the best internal control gene for the K2 S4 O6 energy resource, and rpoC was the best internal control gene under Cu2+ stress. Furthermore, the expressional levels of 11 sigma factors were analysed by RT-qPCR in the stress response. CONCLUSIONS Stable internal control genes for RT-qPCR analysis of A. caldus were determined, and the expression patterns of sigma factor genes of A. caldus were investigated. SIGNIFICANCE AND IMPACT OF THE STUDY The identification of the optimal reference gene and analysis of transcription levels of sigma factors in A. caldus can provide clues for reference gene selection and the study of sigma factor function.
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Affiliation(s)
- L F Li
- Henan Neurodevelopment Engineering Research Center for Children, Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, China.,State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Z B Wang
- Energy-rich Compounds Production by Photosynthetic Carbon Fixation Research Center, Shandong Key Lab of Applied Mycology, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - C G Han
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - H Q Sun
- Department of Neonatology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, China
| | - R Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Y L Ren
- Qingdao Longding Biotech Limited Company, Qingdao, China
| | - J Q Lin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - X Pang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - X M Liu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - J Q Lin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - L X Chen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
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Fang C, Wang C, Liu K, Pang X. Early Outcomes of Left Subclavian Artery Revascularization Using Castor Single-Branched Stent-Graft in the Treatment of Type B Aortic Dissection or Intramural Hematoma. Ann Thorac Cardiovasc Surg 2020; 27:251-259. [PMID: 33342930 PMCID: PMC8374093 DOI: 10.5761/atcs.oa.20-00166] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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] [Indexed: 11/30/2022] Open
Abstract
Background: More evidence was required to guide the management of left subclavian artery (LSA) during thoracic endovascular aortic repair (TEVAR). The present study aimed to compare the outcomes of LSA coverage with LSA revascularization. Another purpose of this study was to share our experience of LSA revascularization with castor single-branched stent-graft. Methods: From January 2016 to December 2019, 134 patients with type B aortic dissection (TBAD) or intramural hematoma (IMH) were enrolled and divided into two groups, the LSA-covered group (n = 61) and the LSA-revascularized group (with castor single-branched stent-graft, n = 73). The results, such as in-hospital and 30-day mortality, stroke, paraplegia, left arm ischemia, operation time, endoleak, were compared between the two groups. Results: The incidence of 30-day stroke in the LSA-covered group (8.2%) was significantly higher compared with the LSA-revascularized group (0%, P = 0.018). 30-day ischemia of left arm occurred in more patients in the LSA-covered group (11.5%, P = 0.003). No statistical difference was found in the incidences of paraplegia, endoleak, in-hospital mortality, and 30-day mortality. Conclusions: LSA should be revascularized during TEVAR to reduce the incidences of stroke and left arm ischemia. Castor single-branched stent-graft was feasible and safe for treating TBAD or IMH.
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Affiliation(s)
- Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chen Wang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Kai Liu
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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12
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Liu Z, Wang C, Zhang X, Wu S, Fang C, Pang X. Effect of different types of cerebral perfusion for acute type A aortic dissection undergoing aortic arch procedure, unilateral versus bilateral. BMC Surg 2020; 20:286. [PMID: 33208110 PMCID: PMC7672832 DOI: 10.1186/s12893-020-00957-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 11/12/2020] [Indexed: 11/17/2022] Open
Abstract
Background Antegrade cerebral perfusion (ACP), including unilateral and bilateral, is most commonly used for cerebral protection in aortic surgery. There is still no consensus on the superiority of the two methods. Our research aimed to investigate the clinical effects of u-ACP and b-ACP. Methods 321 of 356 patients with type A aortic dissection were studied retrospectively. 124 patients (38.6%) received u-ACP, and 197 patients (61.4%) received b-ACP. We compared the incidence of postoperative neurological complications and other collected data between two groups. Besides, we also analyzed perioperative variables to find the potential associated factors for neurological dysfunction (ND). Results For u-ACP group, 54 patients (43.5%) had postoperative neurological complications, including 22 patients (17.7%) with permanent neurologic dysfunction (PND) and 32 patients (25.8%) with temporary neurologic dysfunction (TND). For b-ACP group, 47 patients (23.8%) experienced postoperative neurological complications, including 16 patients (8.1%) of PND and 31 patients (15.7%) of TND. The incidence of PND and TND were significantly different between two groups along with shorter CPB time (p = 0.016), higher nasopharyngeal temperature (p≦0.000), shorter ventilation time (p = 0.018), and lower incidence of hypoxia (p = 0.022). Furthermore, multivariate stepwise logistic regression analysis confirmed that preoperative neurological dysfunction (OR = 1.20, p = 0.028), CPB duration (OR = 3.21, p = 0.002), and type of cerebral perfusion (OR = 1.48, p = 0.017) were strongly associated with postoperative ND. Conclusions In our study, it was observed that b-ACP procedure exhibited shorter CPB time, milder hypothermia, shorter ventilation time, lower incidence of postoperative hypoxia, and neurological dysfunction compared to u-ACP. Meanwhile, the incidence of ND was independently associated with three factors: preoperative neurological dysfunction, CPB time, and type of cerebral perfusion.
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Affiliation(s)
- Zhengqin Liu
- Cardiac Surgical Intensive Care Unit, Qilu Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Chen Wang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Wenhuaxi Road, Jinan, 250012, Shandong, China
| | - Xiquan Zhang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Wenhuaxi Road, Jinan, 250012, Shandong, China
| | - Shuming Wu
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Wenhuaxi Road, Jinan, 250012, Shandong, China
| | - Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Wenhuaxi Road, Jinan, 250012, Shandong, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Wenhuaxi Road, Jinan, 250012, Shandong, China.
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Xiao W, Li M, Guo Z, Zhang R, Xi S, Zhang X, Li Y, Wu D, Ren Y, Pang X, Wan X, Li K, Zhou C, Zhai X, Wang Q, Zeng Z, Zhang H, Yang X, Wu Y, Li M, Gao Y. A Genotype Signature for Predicting Pathologic Complete Response in Locally Advanced Rectal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Lin X, Fang Z, Zeng C, Zhu C, Pang X, Liu C, He W, Duan J, Qin N, Guo K. Continuous Electrochemical Synthesis of Iso-Coumarin Derivatives from o-(1-Alkynyl) Benzoates under Metal- and Oxidant-Free. Chemistry 2020; 26:13738-13742. [PMID: 32460407 DOI: 10.1002/chem.202001766] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/17/2020] [Indexed: 11/06/2022]
Abstract
A non-oxidant and metal-free strategy for synthesizing iso-coumarin by using a continuous electrochemical microreactor to initiate an oxidative cyclization reaction of o-(1-alkynyl) benzoate and radicals. This efficient and clean continuous electrosynthesis method not only avoids the complicated gas protection operation and production of by-products in the batch processes, but also help to overcome the difficulty that batch metal catalysis and electrocatalysis are difficult to scale up, and has the potential for pilot-scale experiment.
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Affiliation(s)
- Xinxin Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Cuilian Zeng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Chenlong Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Xinyan Pang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Ning Qin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China.,State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing, 211816, P. R. China
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15
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Kolpakov S, Sergeyev SV, Udalcovs A, Pang X, Ozolins O, Schatz R, Popov S. Optical rogue waves in coupled fiber Raman lasers. Opt Lett 2020; 45:4726-4729. [PMID: 32870842 DOI: 10.1364/ol.398493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/18/2020] [Indexed: 06/11/2023]
Abstract
For coupled linear cavity-random fiber Raman lasers, for the first time, to the best of our knowledge, we demonstrate a new mechanism of emergence of the random pulses, with the anomalous statistics satisfying optical rogue waves' criteria experimentally. The rogue waves appear as a result of the coupling of two Raman cascades, namely, a linear cavity laser with a wavelength of 1.55 µm and a random laser with a wavelength nearly 1.67 µm, along with coupling of the orthogonal states of polarization (SOPs). The coherent coupling of SOPs causes localization of the trajectories in the vicinity of these states, whereas polarization instability drives escape taking the form of chaotic oscillations. Antiphase dynamics in two cascades result in the suppression of low amplitude chaotic oscillations and enable the anomalous spikes, satisfying rogue waves criteria.
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16
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Pang X, Zhang L, Liu N, Liu B, Chen Z, Li H, Chen M, Peng M, Ren H, Hu P. Combination of pegylated interferon-alpha and nucleos(t)ide analogue treatment enhances the activity of natural killer cells in nucleos(t)ide analogue experienced chronic hepatitis B patients. Clin Exp Immunol 2020; 202:80-92. [PMID: 32638357 DOI: 10.1111/cei.13486] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/07/2020] [Accepted: 06/11/2020] [Indexed: 02/06/2023] Open
Abstract
A combination of pegylated interferon-alpha (peg-IFN-α) and nucleos(t)ides analogue (NA) therapy can effectively reduce hepatitis B surface antigen (HBsAg), especially in NA-experienced chronic hepatitis B (CHB) patients. However, the immune mechanism of this therapy is unclear. Forty NA-experienced CHB patients were enrolled into this study. The frequencies of peripheral blood natural killer (NK) cells, dendritic cells (DCs), CD4+ T cells, CD8+ T cells, T helper (Th) cells, regulatory T cells (Treg ), B cells and follicular T helper (Tfh) cells were evaluated by flow cytometry. Seven of the 40 patients converted to peg-IFN-α combined with NA treatment, while the other 33 continued to NA therapy. The decrease in HBsAg was more pronounced in the combination treatment group, and only patients receiving combination treatment achieved HBsAg loss. The frequency and absolute number of CD56bright NK cells in the combination treatment group increased significantly compared with the NA treatment group, whereas the CD56dim NK cells were decreased. In the NA treatment group, the proportions of CD4+ TN , CD8+ TN , CD19+ B and cytotoxic T lymphocyte antigen-4 (CTLA-4)+ CD4+ T cells were increased, while the proportions of CD4+ TEM , CD8+ TEM , CD25+ CD4+ Treg , CD25high CD4+ Treg , CD127low CD25+ Treg , programmed cell death 1 (PD-1)+ CD4+ T, PD-1+ CD8+ T, CTLA-4+ CD8+ T, CCR4+ CD25+ Treg and CCR4+ CD25high Treg cells were decreased after therapy. For NA-experienced CHB patients who achieved low HBsAg levels, combination treatment is more likely to result in HBsAg decline and HBsAg clearance by increasing the activity of CD56bright NK cells.
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Affiliation(s)
- X Pang
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L Zhang
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - N Liu
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - B Liu
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Z Chen
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - H Li
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - M Chen
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - M Peng
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - H Ren
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - P Hu
- Department of Infectious Diseases, Institute for Viral Hepatitis, The Key Laboratory of Molecular Biology for Infectious Diseases, Chinese Ministry of Education, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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17
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Guo X, Pang X, Liu Z. Non-Traumatic Splenic Rupture After Open Surgery for Type A Aortic Dissection: A Case Report and Literature Review. Heart Surg Forum 2020; 23:E315-E317. [PMID: 32524990 DOI: 10.1532/hsf.2175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 02/27/2020] [Indexed: 01/01/2023]
Abstract
Aortic dissection is a severe condition that involves a tear in the wall of the major artery carrying blood out of the heart (aorta). This cardiac disease has a high mortality, particularly Stanford type A, which involves the first part of the aorta. Aortic dissection is characterized by urgent onset, rapid progress, and poor outcome [Nienaber 2003; Mehta 2002]. Surgery is the most effective treatment. Although there have been remarkable recent advances in the understanding and management of various aspects of these complex surgeries, many potential complications remain. Non-traumatic splenic rupture is a rare postoperative complication of type A aortic dissection, and there are only a few published reports discussing this complication. Splenic rupture is a life-threatening cause of intraperitoneal bleeding and often is associated with the preexisting pathology of the spleen in the absence of trauma [Renzulli 2009]. Its manifestation is characterized by abdominal pain, left shoulder pain, and even shock. Because of the history of aortic dissection, physicians initially may suspect arterial rupture. In our report, we aim to present the possibility of splenic rupture as a complication of aortic dissection surgery and the need for immediate surgical intervention.
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Affiliation(s)
- Xudong Guo
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xinyan Pang
- Department of Intensive Care Unit of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Zhengqin Liu
- Department of Intensive Care Unit of Cardiac Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
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18
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Lv Y, Pang X, Jia PY, Jia DL. Combined therapy of infusion of DC from rats with higher expression of IDO and CD40L on rejection post heart transplantation. Eur Rev Med Pharmacol Sci 2019; 22:7977-7984. [PMID: 30536346 DOI: 10.26355/eurrev_201811_16426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Indoleamine 2, 3-dioxygenase (IDO) can inhibit rejection of graft via inducing T cell apoptosis. CD40L monoclonal antibody (mAb) inhibits T cell activation. However, the effects of the combination of infusion of dendritic cell (DC) from IDO over-expressed donor mice and CD40L mAb on the treatment of graft rejection after heart transplantation have not been reported. MATERIALS AND METHODS Allogeneic heart transplantation mouse model was established. Recipient mice were divided into three groups, including control group, IDO group (in which DC donors received adenoviral vector of IDO) and combined therapy group (which received both IDO over-expressed DC infusion and CD40L mAb injection post transplantation). Survival time and cardiac function were observed, with IDO expression being quantified. Flow cytometry (FCM) was used to analyze T cell apoptosis, while enzyme linked immunosorbent assay (ELISA) was adopted to test the levels of interferon-γ (IFN-γ), interleukin-2 (IL-2), interleukin-10 (IL-10) and interleukin-6 (IL-6). RESULTS IDO expression was significantly elevated in both IDO and combined therapy groups, with enhanced T cell apoptosis compared to control group (p < 0.05). Both groups had better survival time and cardiac functions compared to control group, along with increased IL-10/IL-6 expression and suppressed INF-γ and IL-2 expression (p < 0.05). However, combined therapy had a better efficiency compared to IDO group (p < 0.05). CONCLUSIONS Combined therapy of high IDO expressed mouse DC perfusion with CD40L mAb can elongate the survival time of recipient heart and inhibit rejection reaction via facilitating T cell apoptosis. Meanwhile, combined therapy could also regulate the expression of some immune suppressant factors and mediate the Th1/Th2 cytokine balance.
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Affiliation(s)
- Y Lv
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
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19
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Feng L, Liu Z, Lou X, Zhou X, Chen H, Pang X, Liu S, He F, Wei M, Tian J, Wan X. A Radiomics-Based Multi-Omics Integration Model to Predict the Therapeutic Response to Neoadjuvant Chemoradiotherapy of Rectal Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.087] [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: 10/26/2022]
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20
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Yang M, Zhou Y, Liu L, Wang S, Jiang J, Shang Q, Yu H, Xiang X, Pang X, Li T, Zhao P. Decreased A20 expression on circulating CD56 bright NK cells contributes to a worse disease status in patients with ankylosing spondylitis. Clin Exp Immunol 2019; 198:1-10. [PMID: 31206174 DOI: 10.1111/cei.13341] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2019] [Indexed: 12/31/2022] Open
Abstract
A20, a pivotal anti-inflammatory protein, preserves immune homeostasis and regulates prolonged inflammation. A previous study has shown that A20 expression levels are down-regulated in peripheral blood mononuclear cells (PBMCs) from patients with ankylosing spondylitis (AS). However, the precise role of A20 in reducing autoimmune disorders needs to be further elucidated. In this study, A20 expression was found to be preferentially reduced on circulating CD56bright natural killer (NK) cells in patients with AS, and its level was negatively correlated with that of proinflammatory cytokines. Further investigation demonstrated that A20 reduces interferon (IFN)-γ and tumour necrosis factor (TNF)-α production in CD56bright NK cells after stimulation with monokines or phorbol myristate acetate (PMA)/ionomycin(P/I). Furthermore, CD56bright NK cells isolated from AS patients promote TNF-α secretion by autologous monocytes, and increasing the A20 expression level partially attenuates this process. More importantly, decreased A20 expression on circulating CD56bright NK cells is associated with worse disease status in patients with AS. Our findings reveal that A20 participates in the pathogenesis of AS by negatively regulating CD56bright NK cells and that its reduced expression contributes to a worsened disease status in patients with AS.
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Affiliation(s)
- M Yang
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Y Zhou
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, China
| | - L Liu
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - S Wang
- Department of Rheumatology, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - J Jiang
- Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Q Shang
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - H Yu
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - X Xiang
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - X Pang
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
| | - T Li
- Department of Clinical Laboratory, Binzhou Medical University Hospital, Binzhou, China
| | - P Zhao
- Center of Translational Medicine, Zibo Central Hospital Affiliated to Shandong University, Zibo, China
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Li C, Pang X, liu R, Shi B. The key factors of mesenchymal β-catenin/f-actin played in palatal elevation. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.048] [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: 10/26/2022]
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22
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Zhang P, Pang X, Yu D, Zhang Y. Concurrent true inferoposterior left ventricular aneurysm and ventricular septal rupture secondary to inferior myocardial infarction: a case report. Eur Heart J Case Rep 2018; 2:yty136. [PMID: 31020212 PMCID: PMC6426050 DOI: 10.1093/ehjcr/yty136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/01/2018] [Indexed: 11/14/2022]
Abstract
Background Although left ventricular aneurysm (LVA) is the most common mechanical complication of myocardial infarction (MI), it rarely involves the inferior or posterior left ventricular wall. Ventricular septal rupture (VSR) may be a fatal mechanical complication of MI but rarely occurs in the posterior or inferior portion of the interventricular septum. Thus, LVA and VSR as two mechanical complications of MI in the same patient are extremely rare. Case summary A 65-year-old woman, who had inferior ST-segment elevation myocardial infarction 2 months before without reperfusion therapy, was admitted with exertional dyspnoea for 1 month. Echocardiography and computed tomography revealed true inferoposterior LVA and VSR as concurrent complications of MI. These imaging findings were confirmed during cardiac surgery. After successful coronary bypass grafting and ventriculoplasty, the patient recovered quickly and was discharged from the hospital. Discussion A rare case of post-infarction inferoposterior LVA with concurrent interventricular septal rupture was reported. Transthoracic and transoesophageal echocardiography and cardiac computed tomography were valuable tools for the diagnosis of this rare condition. Combined coronary bypass grafting and ventriculoplasty were effective in treating this often fatal complication of inferior MI.
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Affiliation(s)
- Pengfei Zhang
- The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, No 107 Wenhuaxi Road, Jinan, Shandong Province, China
| | - Xinyan Pang
- Department of Cardiosurgery, Qilu Hospital of Shandong University, No 107 Wenhuaxi Road, Jinan, Shandong Province, China
| | - Dexin Yu
- Department of Radiology, Qilu Hospital of Shandong University, No 107 Wenhuaxi Road, Jinan, Shandong Province, China
| | - Yun Zhang
- The Key Laboratory of Cardiovascular Remodelling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, No 107 Wenhuaxi Road, Jinan, Shandong Province, China
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23
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Gao GQ, Jin C, Zheng WC, Pang X, Zheng DX, Bai HL. Strain-mediated magnetic properties of epitaxial cobalt ferrite thin films on flexible muscovite. ACTA ACUST UNITED AC 2018. [DOI: 10.1209/0295-5075/123/17002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Liu K, Fang C, Shen Y, Liu Z, Zhang M, Ma B, Pang X. Hypoxia-inducible factor 1a induces phenotype switch of human aortic vascular smooth muscle cell through PI3K/AKT/AEG-1 signaling. Oncotarget 2018; 8:33343-33352. [PMID: 28415624 PMCID: PMC5464872 DOI: 10.18632/oncotarget.16448] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [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: 12/28/2016] [Accepted: 03/09/2017] [Indexed: 12/23/2022] Open
Abstract
To date, hypoxia-inducible factor 1a (HIF-1a) and astrocyte elevated gene-1 (AEG-1) have been involved in the proliferation, migration and morphological changes of vascular smooth muscle cells. However, the potential relationship of HIF-1a-AEG-1 pathway in human aortic smooth muscle cell (HASMC) has not been reported. In the present study, in-vitro assays were utilized to explore the potential impact of HIF-1a-AEG-1 signaling on HASMC phenotype. Here, we found that HIF-1a expression was up-regulated in the media of thoracic aortic dissection tissues as compared with normal aortic tissues, and was associated with increased apoptotic SMCs and decreased AEG-1 expression. Mechanically, hypoxia promoted the expression of HIF-1a by PI3K-AKT pathway in HASMCs; HIF-1a further suppressed the expressions of AEG-1, a-SMA and SM22a, and promoted osteopontin (OPN) expression. Functionally, HIF-1a inhibited the proliferation and migration of HASMCs. However, si-HIF-1a or Akt inhibitor abrogated HIF-1a-mediated related expressions and biological effects above. In conclusion, HIF-1a induces HASMC phenotype switch, and closely related to PI3K/AKT and AEG-1 signaling, which may provide new avenues for the prevention and treatment of aortic dissection diseases.
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Affiliation(s)
- Kai Liu
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Yuwen Shen
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Zhengqin Liu
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Min Zhang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Bingbing Ma
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong, China
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He L, Pang X, Liu H, Chai Y, Wu H, Yang T. Targeted next-generation sequencing and parental genotyping in sporadic Chinese Han deaf patients. Clin Genet 2018; 93:899-904. [PMID: 29178603 DOI: 10.1111/cge.13182] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 09/14/2017] [Revised: 11/16/2017] [Accepted: 11/21/2017] [Indexed: 11/29/2022]
Abstract
The interpretation of the targeted next-generation sequencing (NGS) results can be challenging for variants identified in the sporadic deaf patients. In this study, we performed targeted NGS of 143 deafness-associated genes in 44 sporadic deaf patients and use parental genotyping to test whether the candidate pathogenic variants complied with recessive or de novo pattern. Of 29 recessive candidate variants with minor allele frequencies (MAFs) less than 0.005, 3 pairs of apparent compound heterozygous variants were inherited from the same parental allele, ruling out their pathogenic roles. In addition, non-segregation of an OTOA p.Gln293Arg variant led to the discovery of a genomic microdeletion of OTOA on the opposite allele by copy number variation analysis. Overall, 13 pairs of recessive candidate variants were deemed causative in 13 patients. Of the 28 dominant candidate variants with MAFs less than 0.0005, none occurred de novo, suggesting that they were not disease causing. Our results revealed that targeted NGS in sporadic deaf patients may generate a significant false-positive rate. Parental genotyping is a simple but effective step toward minimizing the false-positive results. Our study also showed that de novo variants in dominant deafness genes may not be a common cause for sporadic deafness.
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Affiliation(s)
- L He
- Department of Otorhinolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China.,Department of Otorhinolaryngology-Head and Neck Surgery, Chengdu Integrated TCM&Western Medicine Hospital, Sichuan, China
| | - X Pang
- Department of Otorhinolaryngology-Head and Neck Surgery, Taizhou People's Hospital, Fifth Affiliated Hospital of Nantong University, Jiangsu, China
| | - H Liu
- Department of Pediatric Surgery, First Affiliated Hospital of Gannan Medical University, Jiangxi, China
| | - Y Chai
- Department of Otorhinolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - H Wu
- Department of Otorhinolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - T Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Jiaotong University School of Medicine, Ear Institute, Shanghai, China.,Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
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Abstract
OBJECTIVE To study the risk factors of oxygenation impairment in patients with type-A acute aortic dissection who underwent total arch replacement with a stented elephant trunk. METHODS In this study, 169 consecutive patients were enrolled who were diagnosed with type-A acute aortic dissection and underwent a total arch replacement procedure at the Qilu Hospital of Shandong University between January 2015 and February 2017. Postoperative oxygenation impairment was defined as arterial oxygen partial pressure/inspired oxygen fraction ≤ 200 with positive end expiratory pressure ≥ 5 cm H2O that occurred within 72 hours of surgery. Perioperative clinical characteristics of all patients were collected and univariable analyses were performed. Risk factors associated with oxygenation impairment identified by univariable analyses were included in the multivariable regression analysis. RESULTS The incidence of postoperative oxygenation impairment was 48.5%. Postoperative oxygenation impairment was associated with prolonged mechanical ventilation time, intensive care unit stay, and hospital stay. Multivariable regression analysis demonstrated that body mass index (odds ratio [OR], 1.204; 95% confidence interval [CI], 1.065-1.361; P = .003), preoperative oxygenation impairment (OR, 9.768; 95% CI, 4.159-22.941; P < .001), preoperative homocysteine (OR, 1.080; 95% CI, 1.006-1.158; P = .032), circulatory arrest time (OR, 1.123; 95% CI, 1.044-1.207; P = .002), and plasma transfusion (OR, 1.002; 95% CI, 1.001-1.003; P = .002) were significantly associated with postoperative oxygenation impairment. CONCLUSIONS Postoperative oxygenation impairment is a common complication of surgery for type-A acute aortic dissection. Body mass index, preoperative oxygenation impairment, preoperative homocysteine, circulatory arrest time, and plasma transfusion were independent risk factors for oxygenation impairment after a total arch replacement procedure.
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Affiliation(s)
- Yuwen Shen
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Chuanzhen Liu
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Jie Xi
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Shuming Wu
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China
| | - Guangmin Song
- Department of Cardiovascular Surgery, Qilu Hospital of Shandong University, Shandong, China.
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Peng B, Yang L, Yang C, Pang X, Chen X, Wu Y. The effectiveness of anterior cervical decompression and fusion for the relief of dizziness in patients with cervical spondylosis: a multicentre prospective cohort study. Bone Joint J 2018; 100-B:81-87. [PMID: 29305455 DOI: 10.1302/0301-620x.100b1.bjj-2017-0650.r2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS Cervical spondylosis is often accompanied by dizziness. It has recently been shown that the ingrowth of Ruffini corpuscles into diseased cervical discs may be related to cervicogenic dizziness. In order to evaluate whether cervicogenic dizziness stems from the diseased cervical disc, we performed a prospective cohort study to assess the effectiveness of anterior cervical discectomy and fusion on the relief of dizziness. PATIENTS AND METHODS Of 145 patients with cervical spondylosis and dizziness, 116 underwent anterior cervical decompression and fusion and 29 underwent conservative treatment. All were followed up for one year. The primary outcomes were measures of the intensity and frequency of dizziness. Secondary outcomes were changes in the modified Japanese Orthopaedic Association (mJOA) score and a visual analogue scale score for neck pain. RESULTS There were significantly lower scores for the intensity and frequency of dizziness in the surgical group compared with the conservative group at different time points during the one-year follow-up period (p = 0.001). There was a significant improvement in mJOA scores in the surgical group. CONCLUSION This study indicates that anterior cervical surgery can relieve dizziness in patients with cervical spondylosis and that dizziness is an accompanying manifestation of cervical spondylosis. Cite this article: Bone Joint J 2018;100-B:81-7.
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Affiliation(s)
- B Peng
- General Hospital of Armed Police Force, 69 Yongding Road, Beijing 100039, China
| | - L Yang
- General Hospital of Armed Police Force, 69 Yongding Road, Beijing 100039, China
| | - C Yang
- Changzheng Hospital, 415 Fengyang Rd, Huangpu Qu, Shanghai 200000, China
| | - X Pang
- General Hospital of Armed Police Force, 69 Yongding Road, Beijing 100039, China
| | - X Chen
- Changzheng Hospital, 415 Fengyang Rd, Huangpu Qu, Shanghai 200000, China
| | - Y Wu
- 304th Hospital, 28 Fuxing Rd, Haidian Qu, Beijing 100853, China
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30
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Zhao P, Zhang J, Pang X, Zhao L, Li Q, Cao B. Effect of apatinib combined with 5-fluorouracil (5-FU) on proliferation, apoptosis and invasiveness of gastric cancer cells. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx361.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Gu W, Shi D, Mi N, Pang X, Liu W. Physician, Beware! Drug Fever Without Skin Rashes Can Be Caused by Minocycline. J Investig Allergol Clin Immunol 2017; 27:268-269. [PMID: 28731416 DOI: 10.18176/jiaci.0164] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- W Gu
- Department of Dermatology, General Hospital of Air Force, Beijing, China
| | - D Shi
- Department of Dermatology, General Hospital of Air Force, Beijing, China
| | - N Mi
- Hospital of Beijing Technology and Business University, Beijing, China
| | - X Pang
- Department of Dermatology, General Hospital of Air Force, Beijing, China
| | - W Liu
- Department of Dermatology, General Hospital of Air Force, Beijing, China
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Liu Z, Pang X, Zhang X, Cao G, Fang C, Wu S. Incidence and Risk Factors of Delirium in Patients After Type-A Aortic Dissection Surgery. J Cardiothorac Vasc Anesth 2016; 31:1996-1999. [PMID: 28109683 DOI: 10.1053/j.jvca.2016.11.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To study the incidence and related risk factors for postoperative delirium after type-A aortic dissection in patients who underwent Sun's procedure (total arch replacement using a tetrafurcate graft with stented elephant trunk implantation). DESIGN A retrospective study. SETTING A cardiac surgical intensive care unit. PARTICIPANTS The study comprised 100 patients admitted to the intensive care unit for type-A aortic dissection. INTERVENTIONS All patients underwent Sun's procedure with uniform preoperative and anesthetic treatment. MEASUREMENTS AND MAIN RESULTS Delirium was evaluated using the Confusion Assessment Method for the intensive care unit. Baseline demographics and preoperative, intraoperative, and postoperative data were recorded and analyzed retrospectively via univariate analysis and multivariate logistic regression. The incidence of postoperative delirium was 34%, according to Confusion Assessment Method for the intensive care unit criteria. Univariate analysis revealed that 17 variables differed significantly among patients with and without delirium. Additional multivariate stepwise logistic regression analysis confirmed that cerebrovascular disease history, surgery duration, cardiopulmonary bypass duration, intubation time, and hypoxia were strongly associated with postoperative delirium. CONCLUSIONS Delirium is a common postoperative complication of aortic dissection. Cerebrovascular disease history, surgery and cardiopulmonary bypass duration, postoperative hypoxia, and intubation time are independently associated with the development of delirium. Early diagnosis of delirium and modifying these factors properly may be helpful to improve patients' prognosis.
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Affiliation(s)
- Zhengqin Liu
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China
| | - Xiquan Zhang
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China
| | - Guangqing Cao
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China
| | - Changcun Fang
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China
| | - Shuming Wu
- Department of Cardiovascular Surgery, Qilu Hospital, Shandong University, Shandong, China.
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Pang X, He Y, Jung J, Lin Z. 1D nanocrystals with precisely controlled dimensions, compositions, and architectures. Science 2016; 353:1268-72. [DOI: 10.1126/science.aad8279] [Citation(s) in RCA: 265] [Impact Index Per Article: 33.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 08/03/2016] [Indexed: 12/17/2022]
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Pang X, Ding J. P-238A NOVEL HYBRID TECHNIQUE FOR LOCALIZATION OF SUBCENTIMETER LUNG NODULES. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Xue L, Ding J, Wang Q, Pang X, Fan H. F-128RISK FACTORS OF MYASTHENIC CRISIS AFTER TOTAL THYMECTOMY FOR PATIENTS WITH THYMOMA AND MYASTHENIA GRAVIS. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhang J, Huang K, O'Neill KL, Pang X, Luo X. Bax/Bak activation in the absence of Bid, Bim, Puma, and p53. Cell Death Dis 2016; 7:e2266. [PMID: 27310874 PMCID: PMC5143395 DOI: 10.1038/cddis.2016.167] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/20/2016] [Accepted: 05/05/2016] [Indexed: 12/13/2022]
Abstract
How BH3-only proteins activate Bax/Bak, the two gateway proteins of the mitochondria-dependent apoptotic pathway, remains incompletely understood. Although all pro-apoptotic BH3-only proteins are known to bind/neutralize the anti-apoptotic Bcl-2 proteins, the three most potent ones, Bid (tBid), Bim, and Puma, possess an additional activity of directly activating Bax/Bak in vitro. This latter activity has been proposed to be responsible for triggering Bax/Bak activation following apoptotic stimulation. To test this hypothesis, we generated Bid−/−Bim−/−Puma−/− (TKO), TKO/Bax−/−/Bak−/− (PentaKO), and PentaKO/Mcl-1−/− (HexaKO) HCT116 cells through gene editing. Surprisingly, although the TKO cells were resistant to several apoptotic stimuli, robust apoptosis was induced upon the simultaneous inactivation of Bcl-xL and Mcl-1, two anti-apoptotic Bcl-2 proteins known to suppress Bax/Bak activation and activity. Importantly, such apoptotic activity was completely abolished in the PentaKO cells. In addition, ABT-737, a BH3 mimetic that inhibits Bcl-xL/Bcl-w/Bcl-2, induced Bax activation in HexaKO cells reconstituted with endogenous level of GFP-Bax. Further, by generating TKO/p53−/− (QKO) cells, we demonstrated that p53, a tumor suppressor postulated to directly activate Bax, is not required for Bid/Bim/Puma-independent Bax/Bak activation. Together, these results strongly suggest that the direct activation activities of Bid (tBid), Bim, Puma, and p53 are not essential for activating Bax/Bak once the anti-apoptotic Bcl-2 proteins are neutralized.
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Affiliation(s)
- J Zhang
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198-7696, USA.,Xiangya Hospital, Central South University, Changsha 410008, China
| | - K Huang
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198-7696, USA
| | - K L O'Neill
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198-7696, USA
| | - X Pang
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198-7696, USA
| | - X Luo
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198-7696, USA
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Liu K, Zhang X, Cao G, Liu Y, Liu C, Sun H, Pang X. Intratracheal instillation of ethyl pyruvate nanoparticles prevents the development of shunt-flow-induced pulmonary arterial hypertension in a rat model. Int J Nanomedicine 2016; 11:2587-99. [PMID: 27354791 PMCID: PMC4907741 DOI: 10.2147/ijn.s103183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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] [Indexed: 01/17/2023] Open
Abstract
Purpose To investigate whether inhalation of ethyl pyruvate (EP) encapsulated with poly(ethylene glycol)-block-lactide/glycolide copolymer nanoparticles (EP-NPs) can prevent the development of shunt-flow-induced hyperkinetic pulmonary arterial hypertension (PAH) in a rat model. Materials and methods Rats were separated into five groups: blank (ie, no treatment after shunt flow), normal control (ie, no shunt flow or treatment), EP-NP instillation, EP-only instillation, and vehicle. The animals received intratracheal instillation of EP-NPs or other treatments immediately after a shunt flow, and treatment continued weekly until the end of the experiment. Hemodynamic data were recorded, pulmonary arterial remodeling was assessed, and levels of inflammatory mediators and ET1 expression in the lung and serum were analyzed. In addition, retention of EP in the lungs of rats in the EP-NP and EP-only groups was measured using high-performance liquid chromatography. Results After 12 weeks, hemodynamic abnormalities and pulmonary arterial remodeling were improved in the EP-NP instillation group, compared with the blank, EP-only, and vehicle groups (P<0.05). In addition, the EP-NP group showed significantly decreased levels of HMGB1, IL-6, TNFα, reactive oxygen species, and ET1 in the lung during PAH development (P<0.05). Furthermore, EP-NP instillation was associated with reduced serum levels of inflammatory factors and ET1. High-performance liquid-chromatography measurement indicated that EP retention was greater in the lungs of the EP-NP group than in the EP-only group. Conclusion EP-NP instillation attenuated inflammation and prevented pulmonary arterial remodeling during the development of PAH induced by shunt flow. In the future, EP-NP delivery into the lung might provide a novel approach for preventing PAH.
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Affiliation(s)
- Kai Liu
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
| | - Xiquan Zhang
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
| | - Guangqing Cao
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
| | - Yongjun Liu
- Pharmacy College of Shandong University, Jinan, People's Republic of China
| | - Chuanzhen Liu
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
| | - Hourong Sun
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
| | - Xinyan Pang
- Cardiovascular Surgery Department, Qilu Hospital of Shandong University
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Wu Y, Wang X, Chang S, Lu W, Liu M, Pang X. -Lapachone Induces NAD(P)H:Quinone Oxidoreductase-1- and Oxidative Stress-Dependent Heat Shock Protein 90 Cleavage and Inhibits Tumor Growth and Angiogenesis. J Pharmacol Exp Ther 2016; 357:466-475. [DOI: 10.1124/jpet.116.232694] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Bing W, Pang X, Qu Q, Bai X, Yang W, Bi Y, Bi X. Simvastatin improves the homing of BMSCs via the PI3K/AKT/miR-9 pathway. J Cell Mol Med 2016; 20:949-61. [PMID: 26871266 PMCID: PMC4831354 DOI: 10.1111/jcmm.12795] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 10/15/2015] [Accepted: 12/22/2015] [Indexed: 12/21/2022] Open
Abstract
Bone marrow‐derived mesenchymal stem cells (BMSCs) have great therapeutic potential for many diseases. However, the homing of BMSCs to injury sites remains a difficult problem. Recent evidence indicates that simvastatin stimulates AKT phosphorylation, and p‐AKT affects the expression of chemokine (CXC motif) receptor‐4 (CXCR4). Therefore, simvastatin may improve the expression of CXCR4 in BMSCs, and microRNAs (miRs) may participate in this process. In this study, we demonstrated that simvastatin increased both the total and the surface expression of CXCR4 in BMSCs. Stromal cell‐derived factor‐1α (SDF‑1α)‐induced migration of BMSCs was also enhanced by simvastatin, and this action was inhibited by AMD 3100(a chemokine receptor antagonist for CXCR4). The PI3K/AKT pathway was activated by simvastatin in this process, and LY294002 reversed the overexpression of CXCR4 caused by simvastatin. MiR‐9 directly targeted CXCR4 in rat BMSCs, and simvastatin decreased miR‐9 expression. P‐AKT affected the expression of miR‐9; as the phosphorylation of AKT increased, miR‐9 expression decreased. In addition, LY294002 increased miR‐9 expression. Taken together, our results indicated that simvastatin improved the migration of BMSCs via the PI3K/AKT pathway. MiR‐9 also participated in this process, and the phosphorylation of AKT affected miR‐9 expression, suggesting that simvastatin might have beneficial effects in stem cell therapy.
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Affiliation(s)
- Weidong Bing
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Xinyan Pang
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Qingxi Qu
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Xiao Bai
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Wenwen Yang
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Yanwen Bi
- Department of Cardiovascular Surgery, Qi Lu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Xiaolu Bi
- School of Life Science of Shandong University, Jinan, Shandong Province, China
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Dang W, Tang H, Cao H, Wang L, Zhang X, Tian W, Pang X, Li K, Chen T. Strategy of STAT3β cell-specific expression in macrophages exhibits antitumor effects on mouse breast cancer. Gene Ther 2015; 22:977-83. [PMID: 26181625 DOI: 10.1038/gt.2015.70] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 04/27/2015] [Accepted: 06/18/2015] [Indexed: 01/05/2023]
Abstract
Recent studies underscore the importance of crosstalk between tumor-associated macrophages (TAMs) and tumor cells in cancer progression and metastasis. In our study, AdCD68STAT3β, a recombinant adenovirus containing a STAT3β gene driven by CD68 macrophage-specific promoter, was used to suppress STAT3 and the downstream signaling pathways in TAMs. The results showed that STAT3β gene under the control of CD68 macrophage-specific promoter was only expressed in macrophages, which significantly inhibited the motility and invasion of breast cancer cells when co-cultured with 4T1 cells. Moreover, cell-specific STAT3β expression in TAMs extended survival of tumor-bearing mice and suppressed breast tumor growth, angiogenesis and metastasis, by regulating the crosstalk between tumor cells and TAMs. Therefore, our study provided a novel strategy for the antitumor effects of STAT3β.
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Affiliation(s)
- W Dang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - H Tang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - H Cao
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - L Wang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - X Zhang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - W Tian
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - X Pang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - K Li
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - T Chen
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
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Guan X, Pang X, Sun Z, Zhang X, Chen X. Inhibitory effects of zengshengping-butanol fraction on DMBA-induced buccal pouch carcinogenesis in hamsters. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.106] [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: 11/16/2022]
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Shi P, Fang C, Pang X. Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma. Oncol Rep 2015; 34:1319-26. [PMID: 26134542 DOI: 10.3892/or.2015.4081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 06/09/2015] [Indexed: 11/06/2022] Open
Abstract
In recent years, astrocyte elevated gene-1 (AEG-1) has been reported as a key mediator that is involved in the epithelial-to-mesenchymal transition (EMT) process. However, the mechanisms underlying CCL3/CCR5-AEG-1 pathway-mediated EMT in cardiac myxoma (CM) has not been well featured till now. We used immnohistochemistry and immunoblotting to assess the expression of CCR5 and AEG-1 in 30 cases of CM tissues and cells. Subsequently, cultured CM cells were treated with si-AEG-1 or si-CCR5 and then subjected to in vitro assays. We observed that CCR5 and AEG-1 proteins were highly expressed in CM tissues (73.3 and 76.7%, respectively) and closely correlated with tumor size (>5 cm). Importantly, we validated the expression of AEG-1, p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 increased in the CM cell with CCL3 treatment in a time- and concentration-dependent manner. When CM cells were treated with si-CCR5, the expression of AEG-1, p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 was downregulated. In addition, when CM cells were treated with si-AEG-1, the expression of p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 was also downregulated. Using the cell cycle and proliferation assay, the knockdown of AEG-1 inhibited the entry of G1 into S phase and the proliferation capacity of CM cells. In conclusion, AEG-1 mediates CCL3/CCR5-induced EMT development via both Erk1/2 and Akt signaling pathway in CM patients, which indicates CCL3/CCR5-AEG-1-EMT pathway could be suggested as a useful target to affect the progression of CM.
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Affiliation(s)
- Ping Shi
- Department of Emergency Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China
| | - Changcun Fang
- Department of Cardiosurgery, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China
| | - Xinyan Pang
- Department of Cardiosurgery, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China
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Cao G, Liu C, Wan Z, Liu K, Sun H, Sun X, Tang M, Bing W, Wu S, Pang X, Zhang X. Combined hypoxia inducible factor-1α and homogeneous endothelial progenitor cell therapy attenuates shunt flow-induced pulmonary arterial hypertension in rabbits. J Thorac Cardiovasc Surg 2015; 150:621-32. [PMID: 26071969 DOI: 10.1016/j.jtcvs.2015.05.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 01/26/2015] [Revised: 04/24/2015] [Accepted: 05/09/2015] [Indexed: 01/16/2023]
Abstract
BACKGROUND Hyperkinetic pulmonary arterial hypertension (PAH) is a common complication in congenital heart disease, and affects operations, indications, and prognoses for patients. Gene-based stem cell transplantation is an alternative treatment that can attenuate PAH. METHODS Hyperkinetic PAH rabbit models were successfully established, using common carotid artery and jugular vein anastomosis. Endothelial progenitor cells (EPCs) were isolated from the bone marrow, cultured, and transfected with human hypoxia inducible factor-1 alpha (hHIF-1α), using lentiviruses. Two weeks after the transfected EPCs were transplanted into the rabbits, catheterization was applied to collect hemodynamic data. The hypertrophy of the right ventricle and pulmonary vascular remodeling were evaluated by measuring the right ventricle hypertrophy index, the medial wall thickness, and the medial wall area. Western blot and immunohistochemistry analyses were used to detect the expression of hHIF-1α in the pulmonary small arteries. RESULTS Two weeks after transplantation, systolic pulmonary arterial pressure and mean pulmonary arterial pressure were both attenuated. The hypertrophy of the right ventricle, and pulmonary vascular remodeling were reversed. Expression of hHIF-1α in the hHIF-1α-transfected EPCs that had been transplanted was high, and the number of pulmonary small arteries had increased. In addition, combined HIF-1α and homogeneous EPC therapy was more effective at attenuating PAH and increasing the density of pulmonary small arteries, compared with EPC transplantation alone. CONCLUSIONS Both the therapy with HIF-1α-transfected EPCs, and EPC transplantation, attenuated shunt flow-induced PAH, by means of an angiogenic effect. The former therapeutic method was more effective.
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Affiliation(s)
- Guangqing Cao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Chuanzhen Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Zhaojie Wan
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Kai Liu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Hourong Sun
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Xiangfei Sun
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Mengmeng Tang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Weidong Bing
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Shuming Wu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China
| | - Xinyan Pang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China.
| | - Xiquan Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Division of Medicine, Department of Cardiovascular Surgery, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, People's Republic of China.
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Pang X, Liu Z, Zhai G. Advances in non-peptidomimetic HIV protease inhibitors. Curr Med Chem 2014; 21:1997-2011. [PMID: 24533811 DOI: 10.2174/0929867321666140217115951] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 02/02/2014] [Accepted: 02/12/2014] [Indexed: 11/22/2022]
Abstract
HIV protease plays a crucial role in the viral life cycle. It can cleave a series of heptamers in the viral Gag and GagPol precursor proteins to generate mature infectious virus particles. Successful inhibition of the protease will prevent this maturation step and hence block the spreading of HIV. However, the rapid emergence of drug resistance makes it urgent to develop new HIV protease inhibitors to combat the global disease. Besides, poor oral bioavailability, unacceptable side effects, high treatment cost and pill burden also trouble the application of HIV protease inhibitors. In such situations, non-peptidomimetic HIV protease inhibitors have drawn an increasing interest as a potential therapeutic option due to their small molecular weight, favorable bioavailability, high stability in vivo, low resistance and cost of production. In this review, we present the recent advances in non-peptidomimetic HIV protease inhibitors. Their design strategies, biological activities, resistance profiles, as well as clinical application will also be discussed.
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Affiliation(s)
| | | | - G Zhai
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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Chai Y, Chen D, Sun L, Li L, Chen Y, Pang X, Zhang L, Wu H, Yang T. The homozygous p.V37I variant ofGJB2is associated with diverse hearing phenotypes. Clin Genet 2014; 87:350-5. [PMID: 24654934 DOI: 10.1111/cge.12387] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/19/2014] [Accepted: 03/19/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Chai
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - D. Chen
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - L. Sun
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - L. Li
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - Y. Chen
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - X. Pang
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - L. Zhang
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - H. Wu
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
| | - T. Yang
- Department of Otorhinolaryngology-Head and Neck Surgery; Xinhua Hospital
- Ear Institute; Shanghai Jiaotong University; Shanghai China
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Zhou T, Lyu Y, Xu F, Bo W, Zhai Y, Zhang J, Pang X, Zheng B, Wu R. A QTL model to map the common genetic basis for correlative phenotypic plasticity. Brief Bioinform 2013; 16:24-31. [DOI: 10.1093/bib/bbt089] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xu F, Lyu Y, Tong C, Wu W, Zhu X, Yin D, Yan Q, Zhang J, Pang X, Tobias CM, Wu R. A statistical model for QTL mapping in polysomic autotetraploids underlying double reduction. Brief Bioinform 2013; 15:1044-56. [DOI: 10.1093/bib/bbt073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fu G, Bo W, Pang X, Wang Z, Chen L, Song Y, Zhang Z, Li J, Wu R. Mapping shape quantitative trait loci using a radius-centroid-contour model. Heredity (Edinb) 2013; 110:511-9. [PMID: 23572125 PMCID: PMC3656636 DOI: 10.1038/hdy.2012.97] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 07/27/2012] [Accepted: 10/15/2012] [Indexed: 11/08/2022] Open
Abstract
As the consequence of complex interactions between different parts of an organ, shape can be used as a predictor of structural-functional relationships implicated in changing environments. Despite such importance, however, it is no surprise that little is known about the genetic detail involved in shape variation, because no approach is currently available for mapping quantitative trait loci (QTLs) that control shape. Here, we address this problem by developing a statistical model that integrates the principle of shape analysis into a mixture-model-based likelihood formulated for QTL mapping. One state-of-the-art approach for shape analysis is to identify and analyze the polar coordinates of anatomical landmarks on a shape measured in terms of radii from the centroid to the contour at regular intervals. A procrustes analysis is used to align shapes to filter out position, scale and rotation effects on shape variation. To the end, the accurate and quantitative representation of a shape is produced with aligned radius-centroid-contour (RCC) curves, that is, a function of radial angle at the centroid. The high dimensionality of the RCC data, crucial for a comprehensive description of the geometric feature of a shape, is reduced by principal component (PC) analysis, and the resulting PC axes are treated as phenotypic traits, allowing specific QTLs for global and local shape variability to be mapped, respectively. The usefulness and utilization of the new model for shape mapping in practice are validated by analyzing a mapping data collected from a natural population of poplar, Populus szechuanica var tibetica, and identifying several QTLs for leaf shape in this species. The model provides a powerful tool to compute which genes determine biological shape in plants, animals and humans.
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Affiliation(s)
- G Fu
- Center for Computational Biology, Beijing Forestry University, Beijing, China
- Department of Statistics, The Pennsylvania State University, University Park, PA, USA
| | - W Bo
- Center for Computational Biology, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Beijing, China
| | - X Pang
- Center for Computational Biology, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Beijing, China
| | - Z Wang
- Center for Computational Biology, Beijing Forestry University, Beijing, China
- Department of Statistics, The Pennsylvania State University, University Park, PA, USA
| | - L Chen
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Beijing, China
| | - Y Song
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Beijing, China
| | - Z Zhang
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Beijing, China
| | - J Li
- Department of Statistics, The Pennsylvania State University, University Park, PA, USA
| | - R Wu
- Center for Computational Biology, Beijing Forestry University, Beijing, China
- Department of Statistics, The Pennsylvania State University, University Park, PA, USA
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