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Zhang S, Lu K, Hu Y, Xu G, Wang J, Liao Y, Yu S. Cellulose Diacetate Aerogels with Low Drying Shrinkage, High-Efficient Thermal Insulation, and Superior Mechanical Strength. Gels 2024; 10:210. [PMID: 38534628 DOI: 10.3390/gels10030210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/06/2024] [Accepted: 03/19/2024] [Indexed: 03/28/2024] Open
Abstract
The inherent characteristics of cellulose-derived aerogels, such as their natural abundance and environmental friendliness, make them highly interesting. However, its significant shrinkage before and after the supercritical drying procedure and low mechanical strength limit its potential application. Here, we propose a strategy to prepare cellulose diacetate aerogels (CDAAs) with low drying shrinkage, exceptional thermal insulation, and superior mechanical strength. The low drying shrinkage (radial drying shrinkage of 1.4%) of CDAAs is attributed to their relative strong networking skeletons, which are greatly formed by tert-butanol solvent exchange in exerting the interaction of reducing the surface tension force. In this case, CDAAs are eventually endowed with the low bulk density of 0.069 g cm-3 as well. Additionally, as-prepared CDAAs possess an abundant three-dimensional networking structure whose pore size is concentrated in the diameter range of ~50 nm, and the result above is beneficial for improving the thermal insulation performance (thermal conductivity of 0.021 W m-1 K-1 at ambient environmental and pressure conditions). On the other hand, the optimal compressive stresses of CDAAs at 3% and 5% strain are 0.22 and 0.27 MPa respectively, indicating a mechanically well robustness. The above evidence demonstrates indeed the exceptional thermal insulation and superior compressive properties of CDAAs. This work may provide a new solution for developing a kind of high-performance cellulose-derived aerogel in the future.
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Affiliation(s)
- Sizhao Zhang
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, China
- Postdoctoral Research Station on Mechanics, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
| | - Kunming Lu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Yangbiao Hu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Guangyu Xu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Jing Wang
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Yanrong Liao
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Shuai Yu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, China
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Chen X, Li H, Lin Q, Dai S, Qu L, Guo M, Zhang L, Liao J, Wei H, Xu G, Jiang L, Chen Y. Design, synthesis, and biological evaluation of selective covalent inhibitors of FGFR4. Eur J Med Chem 2024; 268:116281. [PMID: 38432058 DOI: 10.1016/j.ejmech.2024.116281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/05/2024]
Abstract
Aberrant signaling via fibroblast growth factor 19 (FGF19)/fibroblast growth factor receptor 4 (FGFR4) has been identified as a driver of tumorigenesis and the development of many solid tumors, making FGFR4 is a promising target for anticancer therapy. Herein, we designed and synthesized a series of bis-acrylamide covalent FGFR4 inhibitors and evaluated their inhibitory activity against FGFRs, FGFR4 mutants, and their antitumor activity. CXF-007, verified by mass spectrometry and crystal structures to form covalent bonds with Cys552 of FGFR4 and Cys488 of FGFR1, exhibited stronger selectivity and potent inhibitory activity for FGFR4 and FGFR4 cysteine mutants. Moreover, CXF-007 exhibited significant antitumor activity in hepatocellular carcinoma cell lines and breast cancer cell lines through sustained inhibition of the FGFR4 signaling pathway. In summary, our study highlights a novel covalent FGFR4 inhibitor, CXF-007, which has the potential to overcome drug-induced FGFR4 mutations and might provide a new strategy for future anticancer drug discovery.
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Affiliation(s)
- Xiaojuan Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Huiliang Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan, China
| | - Qianmeng Lin
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Shuyan Dai
- Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410078, China
| | - Lingzhi Qu
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Ming Guo
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Lin Zhang
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | | | - Hudie Wei
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Guangyu Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan, China.
| | - Longying Jiang
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
| | - Yongheng Chen
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
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Gu Y, Xu C, Zhang Z, Fang C, Yu J, He D, Xu G. Association between infarct location and haemorrhagic transformation of acute ischaemic stroke after intravenous thrombolysis. Clin Radiol 2024; 79:e401-e407. [PMID: 38135575 DOI: 10.1016/j.crad.2023.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/07/2023] [Indexed: 12/24/2023]
Abstract
AIM To evaluate the association between computed tomography (CT)-based imaging variables at the time of admission and haemorrhagic transformation (HT) after intravenous thrombolysis (IVT). MATERIALS AND METHODS One hundred and eight patients who were treated with IVT for acute ischaemic stroke (AIS) during January 2021 to July 2023 were analysed retrospectively. The infarct location was classified as cortical or subcortical in accordance with the Alberta Stroke Program Early CT Score (ASPECTS) system. Logistic regression and receiver operating characteristic curve analyses were performed to determine the relationship between ischaemic variables and HT. RESULTS Of the total, 18 (16.7%) patients had HT and seven (6.5%) had symptomatic intracerebral haemorrhage (sICH). Multivariate analysis revealed that cortical ASPECTS was independently associated with HT (odds ratio [OR], 0.197; 95% confidence interval [CI], 0.076-0.511; p=0.001) and cortical ASPECTS was independently associated with sICH (OR, 0.066; 95% CI, 0.009-0.510; p=0.009). To predict HT and sICH, cortical ASPECTS (HT area under the curve [AUC] = 0.881, sICH AUC = 0.971) provided a higher AUC compared with ASPECTS (HT AUC = 0.850, sICH AUC = 0.918). CONCLUSION Cortical ASPECTS seen on CT at the time of admission is associated with HT and sICH after IVT.
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Affiliation(s)
- Y Gu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - C Xu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - Z Zhang
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - C Fang
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - J Yu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - D He
- Department of Neurology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - G Xu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China.
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Chai Z, Liu B, Lv P, Bai Y, Wang J, Su W, Song X, Yu G, Xu G. Microwave synthesis of amino-functionalized MCM-41 from coal gasification fine slag for efficient bidirectional adsorption of anionic and cationic dyes. Chemosphere 2024; 351:141229. [PMID: 38272133 DOI: 10.1016/j.chemosphere.2024.141229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/19/2023] [Accepted: 01/14/2024] [Indexed: 01/27/2024]
Abstract
Coal based solid waste has been recognized as a sustainable raw material for the preparation of high added value materials for wastewater treatment. In this paper, a preparation route was designed for the rapid, efficient, and low-cost preparation of MCM-41 zeolite using coal gasification fine slag as raw material. Functionalization modification of MCM-41 was carried out by grafting amino groups on its surface to improve its application performance. Moreover, the prepared functionalized material is used for bidirectional adsorption of anionic and cationic dyes. The experimental results indicate that MCM-41 zeolite with highly ordered pore structure was rapidly prepared using the advantages of fast heating and strong permeability of microwave synthesis method, with a specific surface area of up to 862.03 m2/g. Amine functionalized MCM-41 exhibits strong adsorption capacity for both cationic and anionic dyes, with maximum adsorption capacities for methylene blue and Congo red being 292.40 mg/g and 354.61 mg/g, respectively. The study of adsorption kinetics and adsorption mechanism indicate that the adsorption process is mainly controlled through chemical adsorption, including electrostatic attraction, hydrogen bonding, and π-π interactions. The results of this study will provide useful references for the use of coal based solid waste to prepare functional materials for the treatment of organic wastewater.
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Affiliation(s)
- Zhen Chai
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Bin Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Peng Lv
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China.
| | - Yonghui Bai
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China.
| | - Jiaofei Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Weiguang Su
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Xudong Song
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Guangsuo Yu
- School of Chemistry and Chemical Engineering, State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China
| | - Guangyu Xu
- Shandong Yankuangguotuo Science & Engineering Co., Ltd., Zoucheng, 273500, China
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Tan Z, Dong F, Wu L, Xu G, Zhang F. Transcutaneous electrical acupoint stimulation attenuated neuroinflammation and oxidative stress by activating SIRT1-induced signaling pathway in MCAO/R rat models. Exp Neurol 2024; 373:114658. [PMID: 38141805 DOI: 10.1016/j.expneurol.2023.114658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/03/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND Silent information regulator 1 (SIRT1) plays a beneficial role in cerebral ischemic injury. Previous reports have demonstrated that transcutaneous electrical acupoint stimulation (TEAS) exerts a beneficial effect on ischemic stroke; however, whether SIRT1 participates in the underlying mechanism for the neuroprotective effects of TEAS against ischemic brain damage has not been confirmed. METHODS The rat models of middle cerebral artery occlusion/reperfusion (MCAO/R) were utilized in the current experiment. After MCAO/R surgery, rats in TEAS, EC and EX group received TEAS intervention with or without the injection of EX527, the SIRT1 inhibitor. Neurological deficit scores, infarct volume, hematoxylin eosin (HE) staining and apoptotic cell number were measured. The results of RNA sequencing were analyzed to determine the differential expression changes of genes among sham, MCAO and TEAS groups, in order to investigate the possible pathological processes involved in cerebral ischemia and explore the protective mechanisms of TEAS. Moreover, oxidative stress markers including MDA, SOD, GSH and GSH-Px were measured with assay kits. The levels of the proinflammatory cytokines, such as IL-6, IL-1β and TNF-α, were detected by ELISA assay, and Iba-1 (the microglia marker protein) positive cells was measured by immunofluorescence (IF). Western blot and IF were utilized to examine the levels of key molecules in SIRT1/FOXO3a and SIRT1/BRCC3/NLRP3 signaling pathways. RESULTS TEAS significantly decreased brain infarcted size and apoptotic neuronal number, and alleviated neurological deficit scores and morphological injury by activating SIRT1. The results of RNA-seq and bioinformatic analysis revealed that oxidative stress and inflammation were the key pathological mechanisms, and TEAS alleviated oxidative injury and inflammatory reactions following ischemic stroke. Then, further investigation indicated that TEAS notably attenuated neuronal apoptosis, neuroinflammation and oxidative stress damage in the hippocampus of rats with MCAO/R surgery. Moreover, TEAS intervention in the MCAO/R model significantly elevated the expressions of SIRT1, FOXO3a, CAT, BRCC3, NLRP3 in the hippocampus. Furthermore, EX527, as the inhibitor of SIRT1, obviously abolished the anti-oxidative stress and anti-neuroinflammatory roles of TEAS, as well as reversed the TEAS-mediated elevation of SIRT1, FOXO3a, CAT and reduction of BRCC3 and NLRP3 mediated by following MCAO/R surgery. CONCLUSIONS In summary, these findings clearly suggested that TEAS attenuated brain damage by suppressing apoptosis, oxidative stress and neuroinflammation through modulating SIRT1/FOXO3a and SIRT1/BRCC3/NLRP3 signaling pathways following ischemic stroke, which can be a promising treatment for stroke patients.
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Affiliation(s)
- Zixuan Tan
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 05005, PR China
| | - Linyu Wu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Guangyu Xu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China.
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Cui HJ, Chen JM, Wang SS, Cen JZ, Xu G, Wen SS, Liu XB, Zhuang J. [Diagnosis and surgical treatment of high-risk anomalous aortic origin of coronary artery]. Zhonghua Wai Ke Za Zhi 2024; 62:242-247. [PMID: 38291641 DOI: 10.3760/cma.j.cn112139-20230721-00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Objective: To analyze the diagnosis and surgical treatment of high-risk anomalous aortic origin of coronary artery (AAOCA). Methods: This is a retrospective case series study. From January 2016 to July 2023, 24 cases of high-risk AAOCA underwent surgical treatment in Department of Cardiac Surgery, Guangdong Provincial People's Hospital. There were 18 males and 6 females, operatively aged (M (IQR)) 13 (26) years (range: 0.3 to 57.0 years). They were confirmed by cardiac ultrasound and cardiac CT, all of which had anomalous coronary running between the aorta and the pulmonary artery. There were 15 cases of the right coronary artery from the left aortic sinus of Valsalva, 6 cases of left coronary artery from the right aortic sinus of Valsalva, 3 cases of the sigle coronary artery. Only 3 patients had no obvious related symptoms (2 cases were complicated with a positive exercise stress test and 1 case with other intracardiac malformations), 21 cases had a history of chest tightness, chest pain, or syncope after exercise. Three patients suffered syncope after exercise and underwent cardiopulmonary resuscitation (2 cases were treated with an extracorporeal membrane oxygenerator (ECMO)). The gap from the first symptom to the diagnosis was 4.0 (11.5) months (range: 0.2 to 84.0 months). The detection rate of coronary artery abnormalities suggested by the first cardiac ultrasound was only 37.5% (9/24). Seven patients were complicated with other cardiac diseases (4 cases with congenital heart defects, 2 cases with coronary atherosclerotic heart disease, 1 case with mitral valve disease). Results: All 24 patients underwent surgical treatment (23 cases underwent abnormal coronary artery unroofing, 1 case underwent coronary artery bypass grafting), and 5 patients underwent other intracardiac malformation correction at the same time. There were no death or surgery related complications in the hospital for 30 days after the operation. A patient with preoperative extracorporeal cardiopulmonary resuscitation was continuously assisted by ECMO after emergency AAOCA correction and had complications such as limb ischemia necrosis and renal dysfunction after the operation. During the follow-up of 2.2 (3.3) years (range: 1 month to 7.2 years), one patient who previously underwent percutaneous transluminal coronary angioplasty with a stent implant experienced significant postoperative symptomatic relief, and the other discharged patients had no related symptoms. Conclusions: The accurate rate of initial diagnosis for high-risk AAOCA is still low, but the risk of cardiovascular accidents is high. For sports-related chest pain and other symptoms, more attention should be paid to the detection of AAOCA, especially for adolescents. Exercise stress testing can be helpful in evaluating the cardiovascular risk of asymptomatic AAOCA. Instant surgical treatment can achieve satisfactory curative effects.
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Affiliation(s)
- H J Cui
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J M Chen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - S S Wang
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J Z Cen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - G Xu
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - S S Wen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - X B Liu
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J Zhuang
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
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Xu G, Harcourt RR, Tang D, Hefner BT, Thorsos EI, Mickett JB. Subsurface acoustic ducts in the Northern California current system. J Acoust Soc Am 2024; 155:1881-1894. [PMID: 38451134 DOI: 10.1121/10.0024146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 12/08/2023] [Indexed: 03/08/2024]
Abstract
This study investigates the subsurface sound channel or acoustic duct that appears seasonally along the U.S. Pacific Northwest coast below the surface mixed layer. The duct has a significant impact on sound propagation at mid-frequencies by trapping sound energy and reducing transmission loss within the channel. A survey of the sound-speed profiles obtained from archived mooring and glider observations reveals that the duct is more prevalent in summer to fall than in winter to spring and offshore of the shelf break than over the shelf. The occurrence of the subsurface duct is typically associated with the presence of a strong halocline and a reduced thermocline or temperature inversion. Furthermore, the duct observed over the shelf slope corresponds to a vertically sheared along-slope velocity profile, characterized by equatorward near-surface flow overlaying poleward subsurface flow. Two potential duct formation mechanisms are examined in this study, which are seasonal surface heat exchange and baroclinic advection of distinct water masses. The former mechanism regulates the formation of a downward-refracting sound-speed gradient that caps the duct near the sea surface, while the latter contributes to the formation of an upward-refracting sound-speed gradient that defines the duct's lower boundary.
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Affiliation(s)
- Guangyu Xu
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
| | - Ramsey R Harcourt
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
| | - Dajun Tang
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
| | - Brian T Hefner
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
| | - Eric I Thorsos
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
| | - John B Mickett
- Applied Physics Laboratory, University of Washington, Seattle, Washington 98105, USA
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Pu X, Fu Y, Yang Y, Xu G. Ginkgo biloba extract alleviates CCl 4-induced acute liver injury by regulating PI3K/AKT signaling pathway. Heliyon 2024; 10:e26093. [PMID: 38390084 PMCID: PMC10881365 DOI: 10.1016/j.heliyon.2024.e26093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024] Open
Abstract
Acute liver injury (ALI) is a global health problem associated with high mortality and has attracted clinical attention. Ginkgo biloba extract (GBE) is an extract from dried Ginkgo leaves that has many pharmacological effects because of its various ingredients and has been shown to be hepatoprotective. We investigated the hepatoprotective effect of GBE on carbon tetrachloride (CCl4)-induced acute liver injury in vitro. The components of Ginkgo biloba extract are analyzed by LC-MS, and the key targets of "liver injury-Ginkgo biloba" are identified based on bioinformatics analysis. The signaling pathways such as PI3K/AKT are mainly enriched with high correlation in KEGG. The results of in vitro experiments showed that compared with the Model group, except that the ALT activity level and MDA content in EGB-L group were not significantly decreased (P > 0.05), the activity of ALT, AST and MDA content in other EGB groups were significantly decreased (P < 0.05), and the activities of SOD and CAT were significantly increased (P < 0.05). The expression of inflammatory factors IL-1β, IL-6 and TNF-α were also detected. The results showed that compared with the Model group, the contents of IL-6 in EGB-L group were not significantly decreased (P > 0.05), while the contents of IL-1β, IL-6 and TNF-α in other EGB groups were significantly decreased (P < 0.05), indicating that EGB could reduce the level of cell inflammation. Western blot assay detected the protein expression levels of GF, RTK, PI3K, AKT and p-AKT in cells. The results showed that compared with the Model group, the protein expression levels of GF, RTK, PI3K, AKT and P-AKT were significantly increased after EGB treatment (P < 0.05), and the protein expression level of the EGB-H group was higher than the EGB-L group. Ginkgo biloba extract can inhibit the expression of downstream related genes by activating PI3K/AKT signaling pathway, and at the same time alleviate the inflammatory response of cells, reduce the level of inflammation, and protect the cell damage caused by CCl4.
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Affiliation(s)
- Xinyi Pu
- College of Pharmacy, Beihua University, 3999 Binjiang East Road, Jilin, Jilin, 132013, China
| | - Yujuan Fu
- College of Pharmacy, Beihua University, 3999 Binjiang East Road, Jilin, Jilin, 132013, China
| | - Yue Yang
- College of Pharmacy, Beihua University, 3999 Binjiang East Road, Jilin, Jilin, 132013, China
| | - Guangyu Xu
- College of Pharmacy, Beihua University, 3999 Binjiang East Road, Jilin, Jilin, 132013, China
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Bai Y, Chen J, Zhang S, Xu G, Mao Z, Ding Y, Wang W. Inflammation-Responsive Cell Membrane-Camouflaged Nanoparticles against Liver Fibrosis via Regulating Endoplasmic Reticulum Stress and Oxidative Stress. Adv Mater 2024:e2310443. [PMID: 38372054 DOI: 10.1002/adma.202310443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 02/02/2024] [Indexed: 02/20/2024]
Abstract
Liver fibrosis represents a reversible stage of various chronic liver diseases that progresses to cirrhosis. This condition is characterized by an imbalance between tissue damage and repair, and the production of fibers in the liver exceeds their degradation. Oxidative stress (OS) resulting from tissue injury and endoplasmic reticulum stress (ERS) triggered by the overproduction of proteins are pivotal factors in liver fibrosis. Melatonin demonstrates the capability to neutralize free radicals, shielding cells from oxidative harm. It is also a specific inhibitor of the ERS receptor transcription activating factor 6 (ATF6), indicating its great potential in ameliorating liver fibrosis. However, its limited water solubility and oral bioavailability of under 15% present hurdles in achieving therapeutic blood concentrations for treating liver fibrosis. The PLGA@Melatonin is constructed by loading melatonin with poly (lactic-co-glycolic acid) (PLGA). Platelet membranes (PM) and activated hepatic stellate cell membranes (HSCM) with high expression of the platelet-derived growth factor receptor (PDGFR) are extracted to successfully construct PM@PLGA@Melatonin and HSCM@PLGA@Melatonin, which are subsequently utilized to treat mice with liver fibrosis. The results illustrated the remarkable therapeutic effects of the two nanoparticles on liver fibrosis, along with their excellent targeting and biosafety properties.
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Affiliation(s)
- Yang Bai
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| | - Jiaqi Chen
- Center for Plastic & Reconstructive Surgery, Department of Stomatology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Sitong Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| | - Guangyu Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| | - Zhengwei Mao
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Yuan Ding
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, Zhejiang, 310009, China
- National Innovation Center for Fundamental Research on Cancer Medicine, Hangzhou, Zhejiang, 310009, China
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China
- ZJU-Pujian Research & Development Center of Medical Artificial Intelligence for Hepatobiliary and Pancreatic Disease, Hangzhou, Zhejiang, 310058, China
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Xu G, Dong F, Su L, Tan ZX, Lei M, Li L, Wen D, Zhang F. The role and therapeutic potential of nuclear factor κB (NF-κB) in ischemic stroke. Biomed Pharmacother 2024; 171:116140. [PMID: 38211425 DOI: 10.1016/j.biopha.2024.116140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/13/2024] Open
Abstract
Stroke is a prevalent cerebrovascular condition with a global impact, causing significant rates of illness and death. Despite extensive research, the available treatment options for stroke remain restricted. Hence, it is crucial to gain a deeper understanding of the molecular mechanisms associated with the onset and advancement of stroke in order to establish a theoretical foundation for novel preventive and therapeutic approaches. NF-κB, also known as nuclear factor κB, is a transcription factor responsible for controlling the expression of numerous genes and plays a crucial role in diverse physiological processes. NF-κB is triggered and regulates neuroinflammation and other processes after stroke, promoting the generation of cytokine storms and contributing to the advancement of ischemic stroke (IS). Therefore, NF-κB could potentially play a vital role in stroke by regulating diverse pathophysiological processes. This review provides an overview of the functions of NF-κB in stroke and its governing mechanisms. In addition, our attention is directed towards various potential therapies that aim to inhibit the NF-κB signaling pathway in order to offer valuable insights for the advancement of innovative treatment approaches for stroke.
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Affiliation(s)
- Guangyu Xu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Lei Su
- Department of Radiotherapy, Affiliated Hospital of Hebei University, Baoding 071000, PR China
| | - Zi-Xuan Tan
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Mingcheng Lei
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Lina Li
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China
| | - Di Wen
- College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, PR China; Hebei Key Laboratory of Forensic Medicine, Collaborative Innovation Center of Forensic Medical Molecular Identification, Shijiazhuang 050017, PR China; Research Unit of Digestive Tract Microecosystem Pharmacology and Toxicology, Chinese Academy of Medical Sciences, Shijiazhuang 050017, PR China.
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, PR China.
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11
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Wu L, Tan Z, Su L, Dong F, Xu G, Zhang F. Transcutaneous electrical acupoint stimulation alleviates cerebral ischemic injury through the TLR4/MyD88/NF-κ B pathway. Front Cell Neurosci 2024; 17:1343842. [PMID: 38273974 PMCID: PMC10808520 DOI: 10.3389/fncel.2023.1343842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/26/2023] [Indexed: 01/27/2024] Open
Abstract
This study was to explore whether transcutaneous electrical acupoint stimulation (TEAS) treatment could mediate inflammation, apoptosis, and pyroptosis of neuronal cells and microglia activation through the TLR4/MyD88/NF-κB pathway in the early stage of ischemic stroke. TEAS treatment at Baihui (GV20) and Hegu (LI4) acupoints of the affected limb was administered at 24, 48, and 72 h following middle cerebral artery occlusion/reperfusion (MCAO/R), with lasting for 30 min each time. Neurological impairment scores were assessed 2 h and 72 h after ischemia/reperfusion (I/R). TTC staining was used to evaluate the volume of brain infarction. The histopathologic changes of hippocampus were detected by H&E staining. WB analysis was performed to assess the levels of TLR4, MyD88, p-NF-κB p65/NF-κB p65, and inflammation, apoptosis, pyroptosis-related proteins. TLR4 expression was measured using immunohistochemistry. The expression of inflammation-related proteins was also measured using ELISA. Immunofluorescence was used to detect the expression level of Iba1. Our findings demonstrated that TEAS intervention after I/R improved neurological function, reduced the volume of brain infarction, and mitigated pathological damage. Moreover, TEAS reduced the levels of TLR4, MyD88, p-NF-κB p65/NF-κB p65, TNF-α, IL-6, Bax, NLRP3, cleaved caspase-1/pro caspase-1, IL-1β, IL-18, GSDMD, and Iba1 while enhancing Bcl-2 expression. Moreover, the protective effects of TEAS could be counteracted by lipopolysaccharide (LPS, a TLR4 agonist). In conclusion, TEAS can reduce cerebral damage and suppress inflammation, cell death, and microglia activation after ischemic stroke via inhibiting the TLR4/MyD88/NF-κB pathway.
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Affiliation(s)
- Linyu Wu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Zixuan Tan
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Lei Su
- Department of Radiotherapy, Affiliated Hospital of Hebei University, Baoding, China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Guangyu Xu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China
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12
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Cavazzoni A, Digiacomo G, Volta F, Alfieri R, Giovannetti E, Gnetti L, Bellini L, Galetti M, Fumarola C, Xu G, Bonelli M, La Monica S, Verzè M, Leonetti A, Eltayeb K, D'Agnelli S, Moron Dalla Tor L, Minari R, Petronini PG, Tiseo M. PD-L1 overexpression induces STAT signaling and promotes the secretion of pro-angiogenic cytokines in non-small cell lung cancer (NSCLC). Lung Cancer 2024; 187:107438. [PMID: 38100954 DOI: 10.1016/j.lungcan.2023.107438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/22/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND Monoclonal antibodies (ICI) targeting the immune checkpoint PD-1/PD-L1 alone or in combination with chemotherapy have demonstrated relevant benefits and established new standards of care in first-line treatment for advanced non-oncogene addicted non-small cell lung cancer (NSCLC). However, a relevant percentage of NSCLC patients, even with high PD-L1 expression, did not respond to ICI, highlighting the presence of intracellular resistance mechanisms that could be dependent on high PD-L1 levels. The intracellular signaling induced by PD-L1 in tumor cells and their correlation with angiogenic signaling pathways are not yet fully elucidated. METHODS The intrinsic role of PD-L1 was initially checked in two PD-L1 overexpressing NSCLC cells by transcriptome profile and kinase array. The correlation of PD-L1 with VEGF, PECAM-1, and angiogenesis was evaluated in a cohort of advanced NSCLC patients. The secreted cytokines involved in tumor angiogenesis were assessed by Luminex assay and their effect on Huvec migration by a non-contact co-culture system. RESULTS PD-L1 overexpressing cells modulated pathways involved in tumor inflammation and JAK-STAT signaling. In NSCLC patients, PD-L1 expression was correlated with high tumor intra-vasculature. When challenged with PBMC, PD-L1 overexpressing cells produced higher levels of pro-angiogenic factors compared to parental cells, as a consequence of STAT signaling activation. This increased production of cytokines involved in tumor angiogenesis largely stimulated Huvec migration. Finally, the addition of the anti-antiangiogenic agent nintedanib significantly reduced the spread of Huvec cells when exposed to high levels of pro-angiogenic factors. CONCLUSIONS In this study, we reported that high PD-L1 modulates STAT signaling in the presence of PBMC and induces pro-angiogenic factor secretion. This could enforce the role of PD-L1 as a crucial regulator of the tumor microenvironment stimulating tumor progression, both as an inhibitor of T-cell activity and as a promoter of tumor angiogenesis.
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Affiliation(s)
- A Cavazzoni
- Department of Medicine and Surgery University of Parma, Parma, Italy.
| | - G Digiacomo
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - F Volta
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - R Alfieri
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - E Giovannetti
- Department of Medical Oncology, Amsterdam University Medical Center, VU University, Amsterdam, the Netherlands; Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - L Gnetti
- Pathology Unit, University Hospital of Parma, Parma, Italy
| | - L Bellini
- Italian Society of Medicine and Scientific Divulgation, SIMED, Parma, Italy
| | - M Galetti
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Italian Workers' Compensation Authority-INAIL, 00078 Rome, Italy
| | - C Fumarola
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - G Xu
- Department of Medical Oncology, Amsterdam University Medical Center, VU University, Amsterdam, the Netherlands
| | - M Bonelli
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - S La Monica
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - M Verzè
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - A Leonetti
- Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - K Eltayeb
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - S D'Agnelli
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | | | - R Minari
- Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - P G Petronini
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - M Tiseo
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
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Wu R, Lv P, Liu B, Bai Y, Wang J, Wei J, Su W, Xu G, Bao W, Yu G. Aromatics production from relay catalytic pyrolysis of cow manure using Ru/C and ZSM-5 dual catalysts synthesized from coal gasification fine slag. J Environ Manage 2023; 348:119356. [PMID: 37883835 DOI: 10.1016/j.jenvman.2023.119356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/25/2023] [Accepted: 10/14/2023] [Indexed: 10/28/2023]
Abstract
Resource utilization of solid waste can aid in gradual substitution of fossil fuels while achieving waste recycling. In this study, residual carbon and ash slag from the coal gasification fine slag were separated by froth flotation, and then was used to prepare Ru/C and ZSM-5 dual catalysts with carbon-rich and ash-rich components as raw materials, respectively. The performance of two catalysts for catalytic upgrading of volatiles from pyrolysis of cow manure (CM) to produce light aromatic hydrocarbons was systematically investigated. The direct pyrolysis products of CM mainly included alcohols, ketones, ethers, and other oxygen-containing compounds. When ZSM-5 was used as the catalyst, the yield of monocyclic aromatic hydrocarbons (MAHs) increased significantly due to the better catalytic cracking and aromatization abilities of ZSM-5 catalyst. However, the yield of phenols in the pyrolysis products improved when Ru/C was used as the catalyst due to the cleavage effect of Ru/C on the C-O bond. When Ru/C and ZSM-5 were used as dual catalysts in relay catalytic pyrolysis of volatiles, the increase in MAHs yield in the pyrolysis product was higher than the total increase obtained under Ru/C and ZSM-5 single catalysis. The possible pathways for the generation of MAHs from CM under Ru/C and ZSM-5 relay catalytic pyrolysis were revealed by the pyrolysis experiment performed on model compounds.
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Affiliation(s)
- Ruofei Wu
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Peng Lv
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China.
| | - Bin Liu
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Yonghui Bai
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Jiaofei Wang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Juntao Wei
- Joint International Research Laboratory of Biomass Energy and Materials, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Weiguang Su
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China
| | - Guangyu Xu
- Shandong Yankuangguotuo Science & Engineering Co., Ltd., Zoucheng, 273500, China
| | - Weina Bao
- Shandong Yankuangguotuo Science & Engineering Co., Ltd., Zoucheng, 273500, China
| | - Guangsuo Yu
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, China; Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China.
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14
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Xu G. [Perioperative management of eosinophilic chronic rhinosinusitis with nasal polyps: my perspective and experience]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:1254-1258. [PMID: 38186102 DOI: 10.3760/cma.j.cn115330-20231120-00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- G Xu
- Department of ENT, Xiamen Humanity Hospital, Xiamen 361009, China The Otorhinolaryngology Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 518000, China
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Guo T, Zheng D, Xu G, Ding Y, Liu D. Two birds with one stone: facile fabrication of an iron-cobalt bimetallic sulfide nanosheet-assembled nanosphere for efficient energy storage and hydrogen evolution. Dalton Trans 2023; 52:14896-14903. [PMID: 37795943 DOI: 10.1039/d3dt02257a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Transition metal sulfides are widely regarded as the most promising electrode materials for supercapacitors. Herein, we utilized a straightforward electrodeposition method to prepare an iron-cobalt bimetallic sulfide nanosheet-assembled nanosphere on nickel foam (FeCo2S4/NF). The synergistic effect between bimetals and the unique three-dimensional structure significantly improved its capacitive performance. As a result, it demonstrated a remarkable specific capacitance, brilliant long-term stability and acceptable rate capability. Moreover, FeCo2S4/NF and active carbon (AC) were used to assemble an asymmetric supercapacitor (ASC), and FeCo2S4//AC displays a maximum energy density of 29.4 W h kg-1 at 800 W kg-1. Moreover, when adopted as an electrocatalyst for the hydrogen evolution reaction (HER), FeCo2S4/NF exhibited excellent catalytic properties (η10 = 165 mV). Our research provides a valuable insight into the multidisciplinary integration of high-performance energy materials.
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Affiliation(s)
- Tong Guo
- School of Chemistry and Environmental Engineering, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, P.R. China.
| | - Dawei Zheng
- School of Chemistry and Environmental Engineering, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, P.R. China.
| | - Guangyu Xu
- School of Chemistry and Environmental Engineering, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, P.R. China.
| | - Yigang Ding
- School of Chemistry and Environmental Engineering, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, P.R. China.
| | - Dong Liu
- School of Chemistry and Environmental Engineering, School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan 430205, P.R. China.
- Hubei Key Laboratory of Novel Reactor and Green Chemistry Technology, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, P.R. China
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Li M, Xu G, Cui Y, Wang M, Wang H, Xu X, Duan S, Shi J, Feng F. CT-based radiomics nomogram for the preoperative prediction of microsatellite instability and clinical outcomes in colorectal cancer: a multicentre study. Clin Radiol 2023; 78:e741-e751. [PMID: 37487841 DOI: 10.1016/j.crad.2023.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 06/15/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023]
Abstract
AIM To develop and validate a computed tomography (CT)-based radiomics nomogram for preoperative prediction of microsatellite instability (MSI) status and clinical outcomes in colorectal cancer (CRC) patients. MATERIALS AND METHODS This retrospective study enrolled 497 CRC patients from three centres. Least absolute shrinkage and selection operator regression was utilised for feature selection and constructing the radiomics signature. Univariate and multivariate logistic regression analyses were employed to identify significant clinical variables. The radiomics nomogram was constructed by integrating the radiomics signature and the identified clinical variables. The performance of the nomogram was evaluated through receiver operating characteristic curves, calibration curves, and decision curve analysis. Kaplan-Meier analysis was performed to investigate the prognostic value of the nomogram. RESULTS The radiomics signature comprised 10 radiomics features associated with MSI status. The nomogram, integrating the radiomics signature and independent predictors (age, location, and thickness), demonstrated favourable calibration and discrimination, achieving areas under the receiver operating characteristic (ROC) curves (AUCs) of 0.89 (95% confidence interval [CI]: 0.83-0.95), 0.87 (95% CI: 0.79-0.95), 0.88 (95% CI: 0.81-0.96), and 0.86 (95% CI: 0.78-0.93) in the training cohort, internal validation cohort, and two external validation cohorts, respectively. The nomogram exhibited superior performance compared to the clinical model (p<0.05). Additionally, survival analysis demonstrated that the nomogram successfully stratified stage II CRC patients based on prognosis (hazard ratio [HR]: 0.357, p=0.022). CONCLUSION The radiomics nomogram demonstrated promising performance in predicting MSI status and stratifying the prognosis of patients with CRC.
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Affiliation(s)
- M Li
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China; Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - G Xu
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China; Department of Radiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Y Cui
- Department of Radiology, Shanxi Cancer Hospital, Shanxi 030013, Shanxi Province, China
| | - M Wang
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - H Wang
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - X Xu
- Department of Radiotherapy, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - S Duan
- GE Healthcare China, Shanghai 210000, China
| | - J Shi
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
| | - F Feng
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
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Xu G, Lu X, Liu S, Zhang Y, Xu S, Ma X, Xia X, Lu F, Zou F, Wang H, Song J, Jiang J. MSC-Derived Exosomes Ameliorate Intervertebral Disc Degeneration By Regulating the Keap1/Nrf2 Axis. Stem Cell Rev Rep 2023; 19:2465-2480. [PMID: 37528254 DOI: 10.1007/s12015-023-10570-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 08/03/2023]
Abstract
Bone marrow mesenchymal stem cell derived exosomes (BMSC-exos) are a crucial means of intercellular communication and can regulate a range of biological processes by reducing inflammation, decreasing apoptosis and promoting tissue repair. The process of intervertebral disc degeneration (IVDD) is accompanied by increased reactive oxygen species (ROS) because of a decrease in the expression of Nrf2, a critical transcription factor that resists excessive ROS. Our study demonstrated that BMSC-exos decreased ROS production by inhibiting Keap1 and promoting Nrf2 expression, attenuating the apoptosis, inflammation, and degeneration of nucelus pulposus (NP) cells. BMSC-exos promoted an increase in Nrf2 and nuclear translocation, while NF-κB expression was downregulated during this process. Additionally, the expression of antioxidative proteins was elevated after treatment with BMSC-exos. In vivo, we found more NP tissue retention in the BMSC-exos-treated group, along with more expression of Nrf2 and antioxidant-related proteins. Our findings demonstrated for the first time that BMSC-exos could restore the down-regulated antioxidant response system in degenerating NP cells by modulating the Keap1/Nrf2 axis. BMSC-exos could be used as an immediate ROS modulator in the treatment of intervertebral disc degeneration. When BMSC-exos were uptaken by NPCs, the expression of Keap1 decreased and this led to increased expression of Nrf2. Nuclear translocation of Nrf2 then promoted the synthesis of antioxidants against ROS and inhibited NF-kB signalling. Cellular inflammation, apoptosis, and ECM-related indicators were further reduced. Together, the process of IVDD was alleviated.
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Affiliation(s)
- Guangyu Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xiao Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Siyang Liu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Yuxuan Zhang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Shun Xu
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China
| | - Xiaosheng Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Xinlei Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Feizhou Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200240, China
| | - Fei Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Jian Song
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China.
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200040, China.
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Xu G, Zheng J, Sun L. Can SGRT be a Substitute for Plan Verification Procedure? Int J Radiat Oncol Biol Phys 2023; 117:e451-e452. [PMID: 37785454 DOI: 10.1016/j.ijrobp.2023.06.1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Verification of plan (VP) has been part of our pre-treatment workflow for treatment isocenter verification. Currently, our center uses simulator for VP procedure for all our patients before the treatment. We would like to investigate if SGRT could be a good substitute for VP procedure to simplify our pre-treatment workflow. MATERIALS/METHODS In Group A (A-c, A-t, A-a), 20 patients of each treatment site (cranial, thorax and abdomen) were selected randomly. Patients did not go through VP procedure. During the first fraction of treatment, the therapists were guided by SGRT system (Vision RT, UK) and aligned the patient to 3mm and 1°using a standard region of interest (ROI). First CBCT was taken as a reference to customize the ROI for better suitability. Next, the patient was re-aligned to 1mm and 1°using the new ROI. Second CBCT was acquired, and 6 degrees of freedoms shifts were recorded. In Group B (B-c, B-t, B-a), 20 patients of each treatment site (cranial, thorax and abdominal) that were assigned for VP over the same period as Group A patients. Group B patients were aligned based on the skin markings drawn during VP procedure. CBCTs were taken at the first fraction of treatment and shifts were recorded. RESULTS A total of 60 CBCT images were analyzed for each group of patients. The absolute mean and standard deviations were shown in Table 1. The results indicated that Group A is superior, if not comparable, to Group B. Table 1: The absolute mean and standard deviations of first fraction of CBCT positioning errors for Group A and B patients. CONCLUSION With appropriate ROI, SGRT is a good or superior substitute for plan verification procedure. Localization verification can be done during day one of treatment which ease the pre-treatment workflow to both patients and clinical team. Analysis of customized ROI will be further studied in the future.
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Affiliation(s)
- G Xu
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - J Zheng
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - L Sun
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
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Tang LJ, Li XM, Zhang XW, Luo Y, Xu G. [Effects of advanced platelet-rich fibrin on deep partial-thickness burn wounds in nude mice]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:771-778. [PMID: 37805789 DOI: 10.3760/cma.j.cn501225-20220804-00334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To explore the effects of advanced platelet-rich fibrin (A-PRF) on deep partial-thickness burn wounds in nude mice and its mechanism. Methods: The experimental study method was adopted. Forty healthy volunteers in Subei People's Hospital were recruited, including 32 females and 8 males, aged 60 to 72 years. Leukocyte platelet-rich fibrin (L-PRF) and A-PRF membranes were prepared after venous blood was extracted from them. The microstructure of two kinds of platelet-rich fibrin (PRF) membranes was observed by field emission scanning electron microscope. The number of samples was 3 in the following experiments. The L-PRF and A-PRF membranes were divided into L-PRF group and A-PRF group and cultured, and then the release concentrations of platelet-derived growth factor-AB (PDGF-AB) and vascular endothelial growth factor (VEGF) in culture supernatant were determined by enzyme-linked immunosorbent assay on culture day 1, 3, 7, and 14. Mice L929 fibroblasts (Fbs) were divided into L-PRF group and A-PRF group, and cultured with L-PRF or A-PRF conditioned medium, respectively. On culture day 1, 3, and 7, the cell proliferation activity was detected by thiazole blue method. The cell migration rate was detected and calculated at 24 h after scratching by scratch test. Thirty-six male BALB/c nude mice aged 6-8 weeks were selected to make a deep partial-thickness burn wound on one hind leg, and then divided into normal saline group, L-PRF group, and A-PRF group, according to the random number table, with 12 mice in each group. The wounds of nude mice in normal saline group were only washed by normal saline, while the wounds of nude mice in L-PRF group and A-PRF group were covered with the corresponding membranes in addition. The wounds of nude mice in the 3 groups were all bandaged and fixed with dressings. On treatment day 4, 7, and 14, the wound healing was observed and the wound healing rate was calculated. Masson staining was used to observe the new collagen in wound tissue, and immunohistochemical staining was used to detect the percentage of CD31 positive cells in the wound. Data were statistically analyzed with independent sample t test, analysis of variance for repeated measurement, analysis of variance for factorial design, one-way analysis of variance, and least significant difference test. Results: L-PRF membrane's dense network structure was composed of coarse fibrin bundles, with scattered white blood cells and platelets with complete morphology. A-PRF membrane's loose network structure was composed of fine fibrin bundles, with scattered small amount of deformed white blood cells and platelets. On culture day 1, the release concentration of PDGF-AB in PRF culture supernatant in A-PRF group was significantly higher than that in L-PRF group (t=5.73, P<0.05), while the release concentrations of VEGF in PRF culture supernatant in the two groups were similar (P>0.05). On culture day 3, 7, and 14, the release concentrations of PDGF-AB and VEGF in PRF culture supernatant in A-PRF group were significantly higher than those in L-PRF group (with t values of 6.93, 7.45, 5.49, 6.97, 8.97, and 13.64, respectively, P<0.05). On culture day 3, 7, and 14, the release concentrations of PDGF-AB and VEGF in PRF culture supernatant in the two groups were all significantly higher than those in the previous time points within the group (P<0.05). On culture day 1, 3, and 7, the proliferation activity of mice Fbs in A-PRF group was 0.293±0.034, 0.582±0.054, and 0.775±0.040, respectively, which were significantly stronger than 0.117±0.013, 0.390±0.036, and 0.581±0.037 in L-PRF group (with t values of 8.38, 5.14, and 6.16, respectively, P<0.05). At 24 h after scratching, the migration rate of mice Fbs in A-PRF group was (60.9±2.2)%, which was significantly higher than (39.1±2.3)% in L-PRF group (t=11.74, P<0.05). On treatment day 4, the wound exudates of nude mice in L-PRF group and A-PRF group were less with no obvious signs of infection, while the wounds of nude mice in normal saline group showed more exudation. On treatment day 7, the wounds of nude mice in L-PRF group and A-PRF group were dry and crusted, while there was still a small amount of exudate in the wounds of nude mice in normal saline group. On treatment day 14, the wounds of nude mice in A-PRF group tended to heal; a small portion of wounds remained in nude mice in L-PRF group; the wound of nude mice was still covered with eschar in normal saline group. On treatment day 4, 7, and 14, the wound healing rate and percentage of CD31 positive cells of nude mice in L-PRF group were all significantly higher than those in normal saline group (P<0.05); compared with those in normal saline group and L-PRF group, the wound healing rate of nude mice in A-PRF group was significantly increased (P<0.05), the newborn collagen was orderly and evenly distributed, with no excessive deposition, and the percentage of CD31 positive cells was significantly increased (P<0.05). Conclusions: The stable fibrin network structure of A-PRF can maintain the sustained release of growth factors, accelerate cell proliferation, and promote cell migration, so as to shorten the healing time and improve the healing quality of deep partial-thickness burn wounds in nude mice.
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Affiliation(s)
- L J Tang
- Department of Burn Rehabilitation, Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University, Shanghai 201613, China
| | - X M Li
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - X W Zhang
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - Y Luo
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - G Xu
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
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Chen Z, Song J, Xie L, Xu G, Zheng C, Xia X, Lu F, Ma X, Zou F, Jiang J, Wang H. N6-methyladenosine hypomethylation of circGPATCH2L regulates DNA damage and apoptosis through TRIM28 in intervertebral disc degeneration. Cell Death Differ 2023; 30:1957-1972. [PMID: 37438603 PMCID: PMC10406905 DOI: 10.1038/s41418-023-01190-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 05/31/2023] [Accepted: 06/29/2023] [Indexed: 07/14/2023] Open
Abstract
Circular RNAs (circRNAs) are a class of noncoding RNAs that have been found to be involved in intervertebral disc degeneration (IVDD) progression, and N6-methyladenosine (m6A) broadly exists in circRNAs. Here, we identified circGPATCH2L with a low m6A methylation level to be upregulated in degenerative nucleus pulposus tissues. Mechanistically, as a protein decoy for tripartite motif containing 28 (TRIM28) within aa 402-452 region, circGPATCH2L abrogates the phosphorylation of TRIM28 and inhibits P53 degradation, which contributes to DNA damage accumulation and cellular apoptosis and leads to IVDD progression. Moreover, m6A-methylated circGPATCH2L is recognised and endoribonucleolytically cleaved by a YTHDF2-RPL10-RNase P/MRP complex to maintain the physiological state of nucleus pulposus cells. Thus, our data show the physiological significance of m6A modification in regulating circRNA abundance and provide a potentially effective therapeutic target for the treatment of IVDD.
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Affiliation(s)
- Zhenhao Chen
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Jian Song
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Lin Xie
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China
| | - Guangyu Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Chaojun Zheng
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Xinlei Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Feizhou Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, 200000, China
| | - Xiaosheng Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China
| | - Fei Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China.
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China.
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, 200000, China.
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Li L, Ouyang H, Long Z, Zhang Q, Jiang Y, Cai M, Xiong S, Peng S, Xu G, He Q. A triphenylamine-based fluorescent probe with phenylboronic acid for highly selective detection of Hg 2+ and CH 3Hg + in groundwater. Org Biomol Chem 2023. [PMID: 37345756 DOI: 10.1039/d3ob00183k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
Mercury is a highly toxic heavy metal and it poses a serious threat to the natural environment and human health. Thus, selective detection of trace mercury (e.g. inorganic mercury and methylmercury) in the environment is critical yet challenging. Herein, we describe the rational design and facile synthesis of a new triphenylamine-based phenylboronic acid fluorescent probe (TPA-PBA) for selective detection of Hg2+ and CH3Hg+. Due to the inherent specificity of the displacement reaction between phenylboronic acid and mercury, this probe exhibits exceptionally high selectivity towards Hg2+/CH3Hg+ against other tested ions with ppb-level sensitivity. More importantly, the probe TPA-PBA is effective and selective in detecting Hg2+/CH3Hg+ in tap water and real-world groundwater, indicating its potential practical applications in in situ and online mercury detection in real-world scenarios. With TPA-PBA based test strips Hg2+ can be distinguished from CH3Hg+ by the naked eye. This study could accelerate the development of low-cost, highly efficient and selective fluorescent probes for rapid trace mercury detection.
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Affiliation(s)
- Lin Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Hao Ouyang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Zhiqing Long
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Qinpeng Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Yunqi Jiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Meng Cai
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Shenglun Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Sangshan Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Guangyu Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Educational of China, Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha, Hunan 410081, China.
| | - Qing He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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Pan W, Du J, An L, Xu G, Yuan G, Sheng Y, Sun J, Wang M, Zhao N, Guo X, Li H, Han X. Sika deer velvet antler protein extract modulater bone metabolism and the structure of gut microbiota in ovariectomized mice. Food Sci Nutr 2023; 11:3309-3319. [PMID: 37324858 PMCID: PMC10261755 DOI: 10.1002/fsn3.3316] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 02/21/2023] [Accepted: 02/26/2023] [Indexed: 09/20/2023] Open
Abstract
Osteoporosis is a systemic osteopathy characterized by bone metabolism disorders that become more serious with age increases in postmenopausal women. Recent studies have found that antler protein is the main bioactive component of cervus pantotrichum, and it has a positive regulatory effect on bone metabolism and can improve estrogen level. This study aimed to investigate the effect of velvet antler extract (VAE) on the prevention of osteoporosis and the modulation of gut microbiota in ovariectomized (OVX) mice. OVX mice treated with 12 weeks of VAE exhibited higher levels of serum BGP, Ca2+, CT, and HyP (p < .05). Micro-CT scans showed that VAE significantly elevated bone volume fraction (BV/TV), trabecular bone number (Tb.N), trabecular bone thickness (Tb.Th), trabecular bone connection density (Conn.D), decreased trabecular separation (Tb.Sp), and structural modality index (SMI) than untreated OVX mice. The right tibial retinaculum in the VAE group was clearer, with a clearer reticular structure, smaller gaps, a tighter distribution, and a more orderly arrangement. The gut microbiota of the cecal contents was analyzed by 16 s rDNA amplicon sequencing. The data indicated that VAE modulated the species, numbers, and diversity of the gut microbiota in OVX mice. Ovariectomy caused dysbiosis of the intestinal microbiota by increasing the ratio of Firmicutes to Bacteroidetes in mice, but the ratio decreased after treatment with VAE. These results suggest that VAE has a therapeutic effect on OVX mice via modulate bone-related biochemical markers in serum and structure of gut microbiota.
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Affiliation(s)
- Wang Pan
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Juan Du
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Liping An
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Guangyu Xu
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Guangxin Yuan
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Yu Sheng
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Jingbo Sun
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Manli Wang
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Nanxi Zhao
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Xiao Guo
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Hongyu Li
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
| | - Xiao Han
- Department of Pharmaceutical AnalysisBeihua University College of PharmacyJilinChina
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Wang M, Zhang Q, Xu G, Huang S, Zhao W, Liang J, Huang J, Cai S, Zhao H. [Association between vitamin D level and blood eosinophil count in healthy population and patients with chronic obstructive pulmonary disease]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:727-732. [PMID: 37313813 DOI: 10.12122/j.issn.1673-4254.2023.05.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the prevalence of vitamin D deficiency and its association with blood eosinophil count in healthy population and patients with chronic obstructive pulmonary disease (COPD). METHODS We analyzed the data of a total 6163 healthy individuals undergoing routine physical examination in our hospital between October, 2017 and December, 2021, who were divided according to their serum 25(OH)D level into severe vitamin D deficiency group (< 10 ng/mL), deficiency group (< 20 ng/mL), insufficient group (< 30 ng/mL) and normal group (≥30 ng/mL). We also retrospectively collected the data of 67 COPD patients admitted in our department from April and June, 2021, with 67 healthy individuals undergoing physical examination in the same period as the control group. Routine blood test results, body mass index (BMI) and other parameters were obtained from all the subjects, and logistic regression models were used to investigate the association between 25(OH)D levels and eosinophil count. RESULTS The overall abnormal rate of 25(OH)D level (< 30 ng/mL) in the healthy individuals was 85.31%, and the rate was significantly higher in women (89.29%) than in men. Serum 25(OH)D levels in June, July, and August were significantly higher than those in December, January, and February. In the healthy individuals, blood eosinophil counts were the lowest in severe 25(OH)D deficiency group, followed by the deficiency group and insufficient group, and were the highest in the normal group (P < 0.05). Multivariable regression analysis showed that an older age, a higher BMI, and elevated vitamin D levels were all risk factors for elevated blood eosinophils in the healthy individuals. The patients with COPD had lower serum 25(OH)D levels than the healthy individuals (19.66±7.87 vs 26.39±9.28 ng/mL) and a significantly higher abnormal rate of serum 25(OH)D (91% vs 71%; P < 0.05). A reduced serum 25(OH)D level was a risk factor for COPD. Blood eosinophils, sex and BMI were not significantly correlated with serum 25(OH)D level in patients with COPD. CONCLUSION Vitamin D deficiency is common in both healthy individuals and COPD patients, and the correlations of vitamin D level with sex, BMI and blood eosinophils differ obviously between healthy individuals and COPD patients.
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Affiliation(s)
- M Wang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q Zhang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G Xu
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Huang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W Zhao
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Liang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Huang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Cai
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H Zhao
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Wu L, Xian X, Tan Z, Dong F, Xu G, Zhang M, Zhang F. The Role of Iron Metabolism, Lipid Metabolism, and Redox Homeostasis in Alzheimer's Disease: from the Perspective of Ferroptosis. Mol Neurobiol 2023; 60:2832-2850. [PMID: 36735178 DOI: 10.1007/s12035-023-03245-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
In the development of Alzheimer's disease (AD), cell death is common. Novel cell death form-ferroptosis is discovered in recent years. Ferroptosis is an iron-regulated programmed cell death mechanism and has been identified in AD clinical samples. Typical characteristics of ferroptosis involve the specific changes in cell morphology, iron-dependent aggregation of reactive oxygen species (ROS) and lipid peroxides, loss of glutathione (GSH), inactivation of glutathione peroxidase 4 (GPX4), and a unique group of regulatory genes. Increasing evidence demonstrates that ferroptosis may be associated with neurological dysfunction in AD. However, the underlying mechanisms have not been fully elucidated. This article reviews the potential role of ferroptosis in AD, the involvement of ferroptosis in the pathological progression of AD through the mechanisms of iron metabolism, lipid metabolism, and redox homeostasis, as well as a range of potential therapies targeting ferroptosis for AD. Intervention strategies based on ferroptosis are promising for Alzheimer's disease treatment at present, but further researches are still needed.
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Affiliation(s)
- Linyu Wu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, No. 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Xiaohui Xian
- Department of Pathophysiology, Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050051, Hebei, People's Republic of China
- Hebei Key Laboratory of Critical Disease Mechanism and intervention, Shijiazhuang, 050051, People's Republic of China
| | - Zixuan Tan
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, No. 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, 050051, People's Republic of China
| | - Guangyu Xu
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, No. 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Min Zhang
- Department of Pathophysiology, Hebei Medical University, No. 361 East Zhongshan Road, Shijiazhuang, 050051, Hebei, People's Republic of China.
- Hebei Key Laboratory of Critical Disease Mechanism and intervention, Shijiazhuang, 050051, People's Republic of China.
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, No. 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China.
- Hebei Key Laboratory of Critical Disease Mechanism and intervention, Shijiazhuang, 050051, People's Republic of China.
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Liang Z, Xu G, Liu T, Zhong Y, Mo F, Li Z. Quantitatively biomechanical response analysis of posterior musculature reconstruction in cervical single-door laminoplasty. Comput Methods Programs Biomed 2023; 233:107479. [PMID: 36933316 DOI: 10.1016/j.cmpb.2023.107479] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/01/2023] [Accepted: 03/10/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND AND OBJECTIVE The current trend of laminoplasty is developing toward the goal of muscle preservation and minimum tissue damage. Given this, muscle-preserving techniques in cervical single-door laminoplasty have been modified with protecting the spinous processes at the sites of C2 and/or C7 muscle attachment and reconstruct the posterior musculature in recent years. To date, no study has reported the effect of preserving the posterior musculature during the reconstruction. The purpose of this study is to quantitatively evaluate the biomechanical effect of multiple modified single-door laminoplasty procedures for restoring stability and reducing response level on the cervical spine. METHODS Different cervical laminoplasty models were established for evaluating kinematics and response simulations based on a detailed finite element (FE) head-neck active model (HNAM), including ① C3 - C7 laminoplasty (LP_C37), ② C3 - C6 laminoplasty with C7 spinous process preservation (LP_C36), ③ C3 laminectomy hybrid decompression with C4 - C6 laminoplasty (LT_C3 + LP_C46) and ④ C3 - C7 laminoplasty with unilateral musculature preservation (LP_C37 + UMP). The laminoplasty model was validated by the global range of motion (ROM) and percentage changes relative to the intact state. The C2 - T1 ROM, axial muscle tensile force, and stress/strain levels of functional spinal units were compared among the different laminoplasty groups. The obtained effects were further analysed by comparison with a review of clinical data on cervical laminoplasty scenarios. RESULTS Analysis of the locations of concentration of muscle load showed that the C2 muscle attachment sustained more tensile loading than the C7 muscle attachment, primarily in flexion-extension (FE) and in lateral bending (LB) and axial rotation (AR), respectively. Simulated results further quantified that LP_C36 primarily produced 10% decreases in LB and AR modes relative to LP_C37. Compared with LP_C36, LT_C3 + LP_C46 resulted in approximately 30% decreases in FE motion; LP C37 + UMP also showed a similar trend. Additionally, when compared to LP_C37, LT_C3 + LP_C46 and LP C37 + UMP reduced the peak stress level at the intervertebral disc by at most 2-fold as well as the peak strain level of the facet joint capsule by 2-3-fold. All these findings were well correlated with the result of clinical studies comparing modified laminoplasty and classic laminoplasty. CONCLUSIONS Modified muscle-preserving laminoplasty is superior to classic laminoplasty due to the biomechanical effect of the posterior musculature reconstruction, with a retained postoperative ROM and loading response levels of the functional spinal units. More motion-sparing is beneficial for increasing cervical stability, which probably accelerates the recovery of postoperative neck movement and reduces the risk of the complication for eventual kyphosis and axial pain. Surgeons are encouraged to make every effort to preserve the attachment of the C2 whenever feasible in laminoplasty.
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Affiliation(s)
- Z Liang
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China; College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan 410082, China
| | - G Xu
- Department of Orthopedics, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen 518000, China
| | - T Liu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Y Zhong
- Department of Spine Surgery, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - F Mo
- College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Z Li
- Department of Spine Surgery, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China.
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Li D, Lu X, Xu G, Liu S, Gong Z, Lu F, Xia X, Jiang J, Wang H, Zou F, Ma X. Dihydroorotate dehydrogenase regulates ferroptosis in neurons after spinal cord injury via the P53-ALOX15 signaling pathway. CNS Neurosci Ther 2023. [PMID: 36942513 DOI: 10.1111/cns.14150] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/20/2023] [Accepted: 02/20/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) is a highly disabling condition in spinal surgery that leads to neuronal damage and secondary inflammation. Ferroptosis is a non-apoptotic type of cell death that has only recently been identified, which is marked primarily by iron-dependent and lipid-derived reactive oxygen species accumulation, and accompanied by morphological modifications such as mitochondrial atrophy and increase in membrane density. Dihydroorotate dehydrogenase (DHODH) is a powerful inhibitor of ferroptosis and has been demonstrated to inhibit cellular ferroptosis in tumor cells, but whether it can inhibit neuronal injury following spinal cord injury remains ambiguous. METHODS In this study, the effect of DHODH on neuronal ferroptosis was observed in vivo and in vitro using a rat spinal cord injury model and erastin-induced PC12 cells, respectively. A combination of molecular and histological approaches was performed to assess ferroptosis and explore the possible mechanisms in vivo and in vitro. RESULTS First, we confirmed the existence of neuronal ferroptosis after spinal cord injury and that DHODH attenuates neuronal damage after spinal cord injury. Second, we showed molecular evidence that DHODH inhibits the activation of ferroptosis-related molecules and reduces lipid peroxide production and mitochondrial damage, thereby reducing neuronal ferroptosis. Further analysis suggests that P53/ALOX15 may be one of the mechanisms regulated by DHODH. Importantly, we determined that DHODH inhibits ALOX15 expression by inhibiting P53. CONCLUSIONS Our findings reveal a novel function for DHODH in neuronal ferroptosis after spinal cord injury, suggesting a unique therapeutic target to alleviate the disease process of spinal cord injury.
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Affiliation(s)
- Dachuan Li
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Guangyu Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Siyang Liu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhaoyang Gong
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Feizhou Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Xinlei Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Fei Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaosheng Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, China
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Ma Z, Zhao X, Zhang X, Xu G, Liu F. [DTX2 overexpression promotes migration and invasion of colorectal cancer cells through the Notch2/Akt axis]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:340-348. [PMID: 37087577 PMCID: PMC10122736 DOI: 10.12122/j.issn.1673-4254.2023.03.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
Abstract
OBJECTIVE To investigate the effect of changes in DTX2 expression level on migration and invasion of colorectal cancer (CRC) cells and explore the mechanism. METHODS Two CRC cell lines SW620 and LoVo were transfected with a specific shRNA targeting DTX2 (DTX2-shRNA) or a DTX2-overexpressing plasmid (pcDNA-DTX2), and the transfection efficiency was evaluated with RT-qPCR and Western blotting. Scratch and Transwell assays were used to assess the changes in migration and invasion ability of the transfected cells, and the cellular expression levels of Notch2, NICD, AKT, p-Akt and MMP-2/9 proteins were detected with Western blotting. The CRC cells were co-transfected with pcDNA-DTX2 and Notch2 siRNA to assess the effect of Notch2 knockdown on DTX2 overexpression-induced enhancement of cell migration and invasion. RESULTS The expression levels of DTX2 at both the mRNA and protein levels were significantly decreased in CRC cells transfected with DTX2- shRNA (P < 0.01) and increased in cells transfected with pcDNA-DTX2 (P < 0.01). Scratch and Transwell assays showed that the migration and invasion abilities of CRC cells were significantly lowered following DTX2 knockdown (P < 0.01) and were enhanced in cells with DTX2 overexpression (P < 0.01). The expression levels of Notch2, NICD, p-Akt and MMP-2 proteins decreased significantly in CRC cells with DTX2 knockdown (P < 0.05) and increased obviously in DTX2-overexpressing cells (P < 0.05). In both of the two CRC cell lines, transfection with Notch2 siRNA obviously reversed the effect of DTX2 overexpression in promoting cell migration and invasion (P < 0.01) and expressions of the related proteins. CONCLUSION DTX2 overexpression promotes migration and invasion of CRC cells through the Notch2/Akt axis, suggesting the potential of DTX2 as a new biological indicator of CRC.
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Affiliation(s)
- Z Ma
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - X Zhao
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - X Zhang
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - G Xu
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - F Liu
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
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SELVASKANDAN H, Gaultney T, Heath D, Linfoot S, Xu G. WCN23-0139 Leveraging modern machine learning tools to predict outcomes of in-patient acute kidney injury. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.220] [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: 03/22/2023] Open
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Zhao J, Chen P, Xu G, Sun J, Ruan Y, Xue M, Wu Y. [ Bushen Huoxue Fang improves recurrent miscarriage in mice by down-regulating the JAK2/STAT3 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:265-270. [PMID: 36946047 PMCID: PMC10034533 DOI: 10.12122/j.issn.1673-4254.2023.02.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To investigate the efficacy of Bushen Huoxue Fang (BSHXF, a traditional Chinese medicine formula) for improving recurrent spontaneous abortion (RSA) in mice and the role of tyrosine kinase (JAK2) and transcriptional activator (STAT3) signaling pathway in its therapeutic mechanism. METHODS Female CBA/J mice were caged with male DBA/2 mice to establish RSA mouse models, which were randomly divided into model group, dydrogesterone group and BSHXF group, with the female mice caged with male BALB/c mice as the control group (n=6). From the first day of pregnancy, the mice were subjected to daily intragastric administration of BSHXF, dydrogesterone, or distilled water (in control and model groups) for 12 days. After the treatments, serum levels of antithrombin III (AT-III), activated protein C (APC), tissue plasminogen activator (t-PA), progesterone, human chorionic gonadotropin (HCG), and estradiol (E2) were detected in each group using ELISA. HE staining was used to observe the morphological changes of the endometrium of the mice. Western blotting was performed to determine the expressions of p-JAK2, p-Stat3 and Bcl-2 in the placenta of the mice. RESULTS Compared with the control mice, the mouse models of RSA showed a significantly increased embryo loss rate with decreased serum levels of AT-III, T-PA, progesterone, APC and HCG, increased placental expressions of p-JAK2, p-STAT3 and Bax, and decreased expression of Bcl-2 (P < 0.05). Treatments with BSHXF and dydrogesterone both increased serum levels of AT-III, t-PA and HCG in the mouse models; Serum APC level was significantly reduced in BSHXF group and serum progesterone level was significantly increased in dydrogesterone group (P < 0.05). CONCLUSION BSHXF can improve the prethrombotic state and inhibit cell apoptosis by downregulating the JAK2/STAT3 pathway to increase the pregnancy rate in mouse models of RSA.
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Affiliation(s)
- J Zhao
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - P Chen
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - G Xu
- Division II of Department of Reproductive Center, The first affiliated hospital of Henan University of Chinese Medicine, Henan Zhengzhou 450000, China
| | - J Sun
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Y Ruan
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - M Xue
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Y Wu
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
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Wang L, Zhan X, Jiang L, Xu G, Bao Y, Wang J, Qv S, Yang J, Huang D. Association between plasma trimethylamine-N-oxide and cognitive impairment in patients with transient ischemic attack. Neurol Res 2023; 45:634-645. [PMID: 36789535 DOI: 10.1080/01616412.2023.2176632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
BACKGROUND There is increasing evidence for the association of trimethylamine-N-oxide (TMAO) with cognitive impairment after minor stroke or transient ischemic attack (TIA). However, how TMAO affects cognitive function in TIA patients has seldom been studied. METHODS A total of 310 TIA participants were retrospectively collected from our stroke register between January 2020 and July 2021. Plasma TMAO was measured by liquid chromatography‒mass spectrometry at baseline. Cognitive performance was assessed by neuropsychological evaluation at 3 months after TIA onset. RESULTS A total of 310 patients were included (mean age, 74 years; male, 160 [51.6%]; mean ABCD2 score, 2.6). TMAO was positively associated with cognitive impairment after TIA (aOR, 1.423; 95% CI, 1.125-2.561). The highest quartile of TMAO was related to an almost 2-fold increased risk of cognitive decline compared to the lowest quartile. Furthermore, executive and memory function were more susceptible to impairment after TIA in groups with higher levels of TMAO. Mediation analysis revealed that the overall mediated effect was-0.347 (p < 0.001), and the intermediary effect of CRP was-0.108. CONCLUSION Plasma TMAO at baseline was independently associated with cognitive impairment at the 3-month follow-up after TIA. In addition, the inflammatory marker CRP may serve as an important mediator in this relationship. Our study may provide some insights into anti-inflammatory therapy to improve the cognitive trajectory of TIA patients with high TMAO levels.
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Affiliation(s)
- Lufeng Wang
- Department of Neurology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaopeng Zhan
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Li Jiang
- Department of Cardiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guangyu Xu
- Second school of Clinical medicine, Wenzhou Medical University, Wenzhou, China
| | - Yiwen Bao
- Department of Neurology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Junlang Wang
- Department of Radiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shaohua Qv
- Department of Gastrointestinal Surgery, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jie Yang
- Department of Neurology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dongya Huang
- Department of Neurology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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Lin Z, Wang H, Song J, Xu G, Lu F, Ma X, Xia X, Jiang J, Zou F. The role of mitochondrial fission in intervertebral disc degeneration. Osteoarthritis Cartilage 2023; 31:158-166. [PMID: 36375758 DOI: 10.1016/j.joca.2022.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/06/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022]
Abstract
Low back pain (LBP) is an extremely common disorder and is a major cause of disability globally. Intervertebral disc degeneration (IVDD) is the main contributor to LBP. Nevertheless, the specific mechanisms underlying the pathogenesis of IVDD remain unclear. Mitochondria are highly dynamic organelles that continuously undergo fusion and fission, known as mitochondrial dynamics. Accumulating evidence has revealed that aberrantly activated mitochondrial fission leads to mitochondrial fragmentation and dysfunction, which are involved in the development and progression of IVDD. To date, research into mitochondrial dynamics in IVDD is at an early stage. The present narrative review aims to summarize the most recent findings about the role of mitochondrial fission in the pathogenesis of IVDD.
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Affiliation(s)
- Z Lin
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - H Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - J Song
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - G Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - F Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - X Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - X Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - J Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - F Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
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Li C, Dong X, Yuan Q, Xu G, Di Z, Yang Y, Hou J, Zheng L, Chen W, Wu G. Identification of novel characteristic biomarkers and immune infiltration profile for the anaplastic thyroid cancer via machine learning algorithms. J Endocrinol Invest 2023:10.1007/s40618-023-02022-6. [PMID: 36725810 DOI: 10.1007/s40618-023-02022-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/24/2023] [Indexed: 02/03/2023]
Abstract
PURPOSE Anaplastic thyroid cancer (ATC) is a rare and lethal malignant cancer. In recent years, the application of molecular-driven targeted therapy and immunotherapy has markedly improved the prognosis of ATC. This study aimed to identify characteristic genes for ATC diagnosis and revealed the role of ATC characteristic genes in drug sensitivity and immune cell infiltration. METHODS We downloaded ATC RNA-sequencing data from the GEO database. Following the combination and normalization of the dataset, we first divided the combined datasets into the training cohort and the validation cohort. We identified differentially expressed genes (DEGs) in ATC by differential expression analysis in the training cohort. We used two machine learning algorithms, least absolute shrinkage and selection operator (LASSO) and support vector machine-recursive feature elimination (SVM-RFE) to identify ATC characteristic genes. The CIBERSORT algorithm was performed to calculate the abundance of various immune cells in ATC. Finally, we validated the expression of ATC characteristic genes by quantitative RT-PCR (RT-qPCR) in ATC cell lines and immunohistochemistry (IHC). RESULTS A total of 425 DEGs were identified in the training cohort, including 240 upregulated genes and 185 downregulated genes. Four ATC characteristic genes (ADM, PXDN, MMP1, and TFF3) were identified, and their diagnostic value was validated in the validation cohort (AUC in ROC analysis > 0.75). We established a practical gene expression-based nomogram to accurately predict the probability of ATC. We also found that ATC characteristic biomarkers are associated with the tumor immune microenvironment and drug sensitivity. CONCLUSION ADM, PXDN, MMP1, and TFF3 might serve as potential ATC diagnostic biomarkers and may be helpful for ATC molecular targeted therapy and immunotherapy.
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Affiliation(s)
- C Li
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - X Dong
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Q Yuan
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - G Xu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Z Di
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Department of Gastric and Colorectal Surgical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Y Yang
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - J Hou
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - L Zheng
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - W Chen
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
| | - G Wu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
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Yang Y, Fu Y, Sheng S, Ji C, Pu X, Xu G. Screening for diagnostic targets in tuberculosis and study on its pathogenic mechanism based on mRNA sequencing technology and miRNA-mRNA-pathway regulatory network. Front Immunol 2023; 14:1038647. [PMID: 36793717 PMCID: PMC9923233 DOI: 10.3389/fimmu.2023.1038647] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/12/2023] [Indexed: 01/31/2023] Open
Abstract
Purpose Tuberculosis is common infectious diseases, characterized by infectivity, concealment and chronicity, and the early diagnosis is helpful to block the spread of tuberculosis and reduce the resistance of Mycobacterium tuberculosis to anti-tuberculosis drugs. At present, there are obvious limitations in the application of clinical detection methods used for the early diagnosis of tuberculosis. RNA sequencing (RNA-Seq) has become an economical and accurate gene sequencing method for quantifying transcripts and detecting unknown RNA species. Methods A peripheral blood mRNA sequencing was used to screen the differentially expressed genes between healthy people and tuberculosis patients. A protein-protein interaction (PPI) network of differentially expressed genes was constructed through Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database. The potential diagnostic targets of tuberculosis were screened by the calculation of degree, betweenness and closeness in Cytoscape 3.9.1 software. Finally, the functional pathways and the molecular mechanism of tuberculosis were clarified in combination of the prediction results of key gene miRNAs, and by Gene Ontology (GO) enrichment analysis and the Kyoto Encyclopedia Genes and Genomes (KEGG) pathway annotation analysis. Results 556 Differential genes of tuberculosis were screened out by mRNA sequencing. Six key genes (AKT1, TP53, EGF, ARF1, CD274 and PRKCZ) were screened as the potential diagnostic targets for tuberculosis by analyzing the PPI regulatory network and using three algorithms. Three pathways related to the pathogenesis of tuberculosis were identified by KEGG pathway analysis, and two key miRNAs (has-miR-150-5p and has-miR-25-3p) that might participate in the pathogenesis of tuberculosis were screened out by constructing a miRNA-mRNA pathway regulatory network. Conclusion Six key genes and two important miRNAs that could regulate them were screened out by mRNA sequencing. The 6 key genes and 2 important miRNAs may participate in the pathogenesis of infection and invasion of Mycobacterium tuberculosis through herpes simplex virus 1 infection, endocytosis and B cell receptor signaling pathways.
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Lu X, Xu G, Lin Z, Zou F, Liu S, Zhang Y, Fu W, Jiang J, Ma X, Song J. Engineered exosomes enriched in netrin-1 modRNA promote axonal growth in spinal cord injury by attenuating inflammation and pyroptosis. Biomater Res 2023; 27:3. [PMID: 36647161 PMCID: PMC9843879 DOI: 10.1186/s40824-023-00339-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 01/01/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) brings a heavy burden to individuals and society, and there is no effective treatment at present. Exosomes (EX) are cell secreted vesicles containing molecules such as nucleic acids and proteins, which hold promise for the treatment of SCI. Netrin-1 is an axon guidance factor that regulates neuronal growth. We investigated the effects of engineered EX enriched in netrin-1 chemically synthetic modified message RNA (modRNA) in treating SCI in an attempt to find a novel therapeutic approach for SCI. METHODS Netrin-1 modRNA was transfected into bone marrow mesenchymal stem cells to obtain EX enriched with netrin-1 (EX-netrin1). We built an inflammatory model in vitro with lipopolysaccharide (LPS) in vitro to study the therapeutic effect of EX-netrin1 on SCI. For experiments in vitro, ELISA, CCK-8 assay, immunofluorescence staining, lactate dehydrogenase release experiments test, real-time quantitative polymerase chain reaction, and western blot were conducted. At the same time, we constructed a rat model of SCI. MRI, hematoxylin-eosin and Nissl staining were used to assess the extent of SCI in rats. RESULTS In vitro experiments showed that EX had no effect on the viability of oligodendrocytes and PC12 cells. EX-netrin1 could attenuate LPS-induced inflammation and pyroptosis and accelerate axonal/dentritic growth in PC12 cells/oligodendrocytes. In addition, netrin-1 could activate the PI3K/AKT/mTOR signalling pathway upon binding to its receptor unc5b. When Unc5b and PI3K were inhibited, the effect of EX-netrin1 was weakened, which could be reversed by PI3K or mTOR activator. Our in vivo experiments indicated that EX-netrin1 could promote recovery in rats with SCI. CONCLUSION We found that EX-netrin1 regulated inflammation, pyroptosis and axon growth in SCI via the Unc5b/PI3K/AKT/mTOR pathway, which provides a new strategy for the treatment of SCI.
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Affiliation(s)
- Xiao Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Guangyu Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Zhidi Lin
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Fei Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Siyang Liu
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Yuxuan Zhang
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China
| | - Wei Fu
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China.
| | - Xiaosheng Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China.
| | - Jian Song
- Department of Orthopedics, Huashan Hospital, Fudan University, No. 12, Middle Wulumuqi Road, Jing'an District, Shanghai, 200040, China.
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Niu Y, Xu G, Zhu S, Wei X, Wu C, Zhang R, Chen C, Yan L, Luo H, Deng S, Wu W, Li Y, Liu M, Jiang Y, Zhang X. NONO regulates multiple cytokine production in sepsis via the ERK1/2 signaling pathway. Mol Immunol 2023; 153:94-105. [PMID: 36459792 DOI: 10.1016/j.molimm.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 11/09/2022] [Accepted: 11/20/2022] [Indexed: 12/03/2022]
Abstract
The massive release of pro-inflammatory cytokines is a crucial step in triggering the inflammatory cascade in sepsis. Exploring the key molecules regulating the expression and release of multiple cytokines has important value for revealing the mechanism of the cytokine storm in sepsis. This study aimed to investigate the role of multifunctional nuclear protein non-POU domain containing octamer-binding protein (NONO) in the sepsis cytokine storm and to elucidate the underlying mechanism. We found that NONO expression in tissues and cells of sepsis mice was significantly upregulated. Downregulation of NONO expression inhibited the mRNA expression of multiple cytokines, including IL-6, IL-1β, MCP-1, MIP-1α, and MIP-1β in inflammatory cells from mice and human leukemic monocyte-THP1 cells challenged with lipopolysaccharide (LPS), and significantly decreased the level of these cytokines and TNF-α in the supernatant of THP1 cells challenged by LPS. Nono knockout also reduced the levels of TNF-α, IL-6, MIP-1α, and MIP-1β in serum, alleviated hepatocyte edema, and improved the survival rate of sepsis mice. Reduced NONO expression decreased the phospho-ERK1/2 level in inflammatory cells from sepsis mice or THP1 cells challenged by LPS. Phospho-ERK1/2 inhibitor decreased the mRNA expression and concentration of cytokines in the culture supernatant of LPS-induced THP1 cells, similar to the effect of NONO knockdown. After LPS challenge, the levels of phospho-ERK1/2 and NONO were increased, with obvious colocalization in the nucleus and vesicular-like organelles in macrophages. NONO knockdown decreased nuclear translocation of phospho-ERK1/2 in LPS-challenged THP1 cells. These results suggest that NONO is a potentially critical molecule involved in multiple cytokine production in sepsis. Upregulated NONO in sepsis may promote the expression and release of multiple cytokines to participate in a sepsis cytokine storm by promoting ERK1/2 phosphorylation.
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Affiliation(s)
- Ya Niu
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Guangyu Xu
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Shaoping Zhu
- Laboratory Animal Center, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Xiurong Wei
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Changli Wu
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Ruigang Zhang
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Chunling Chen
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Lvbin Yan
- Library, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Haihua Luo
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China.
| | - Simin Deng
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Weijian Wu
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Yaojing Li
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Ming Liu
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
| | - Yong Jiang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, Southern Medical University, Guangzhou 510515, China.
| | - Xiujuan Zhang
- Department of Physiology, Guangdong Medical University, Zhanjiang, Guangdong 524023, China.
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Zhang J, Xu G, Xu L. Number of Teeth and Denture Use Are Associated with Frailty among Chinese Older Adults: A Cohort Study Based on the CLHLS from 2008 to 2018. J Nutr Health Aging 2023; 27:972-979. [PMID: 37997718 DOI: 10.1007/s12603-023-2014-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/01/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVES The aim of this study was to determine the association between oral health and the development of frailty over a 10-year period in older Chinese adults. DESIGN This was a cohort study. SETTING AND PARTICIPANTS The data in this study were derived from the 2008, 2011, 2014 and 2018 waves of the Chinese Longitudinal Health Longevity Survey (CLHLS). The final analysis included 1155 older adults who had complete data for the Frailty Index (FI) and the other factors(oral health, sociodemographics, etc) that were analyzed in the study. MEASUREMENTS Frailty was assessed by the FI, which consists of 40 deficits(self-health assessments, diseases, physical functions,etc). Multivariable logistic regression was carried out to calculate the odds ratios (ORs) of the independent variables,which were obtained from investigator surveys and self-reports, in association with the development of frailty. RESULTS The prevalence of frailty at baseline was 22.94%, and the 10-year incidence of frailty was 24.16% (215/890). Age, number of natural teeth, use of dentures, toothache and sex were independent risk factors for frailty at baseline. After full adjustment, multivariate logistic regression analysis indicated that compared with having ≥21 teeth, edentulism (ORs 3.575; 95% CI 2.095,6.101) and partial tooth loss (ORs 2.448; 95% CI 1.592,3.766) were associated with progression to frailty. Compared with those with ≥21 teeth, those with <21 teeth and without dentures (ORs 2.617; 95% CI 1.713,3.999) were more likely to progress to frailty. CONCLUSION The loss of natural teeth is associated with the progression of frailty in older Chinese adults and denture using can help lower the odds of being frailty. Further research on maintain natural teeth and the appropriate use of dentures may help to establish effective frailty prevention strategies for the older adults.
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Affiliation(s)
- J Zhang
- Liyu Xu, Department of Geriatrics, Zhejiang Hospital, Hangzhou 310013, People's Republic of China, ; Tel. :+86 13486183817
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Yu XY, Zhao MY, Zhang Y, Xu G. [Research advances on the treatment of diabetic foot ulcers with autologous platelet-rich fibrin]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1185-1189. [PMID: 36594150 DOI: 10.3760/cma.j.cn501225-20220110-00001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Diabetic foot is one of the serious complications of diabetic patients, which makes the society and public health bear a huge economic burden. In recent years, more and more studies at home and abroad have been conducted on the treatment of chronic wounds with autologous platelet-rich fibrin, and the therapeutic concepts and methods have been updated constantly. In this paper, we reviewed the general situation of autologous platelet-rich fibrin, the mechanism of autologous platelet-rich fibrin in promoting the healing of diabetic foot ulcers and the new progress in its application, so as to provide a new strategy for the repair of diabetic foot ulcers.
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Affiliation(s)
- X Y Yu
- Graduate School of Dalian Medical University, Dalian 116044, China
| | - M Y Zhao
- The First Department of Facial and Neck Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
| | - G Xu
- Department of Burns and Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
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Zhang S, Wang Z, Hu Y, Ji H, Xiao Y, Wang J, Xu G, Ding F. Ambient Pressure Drying to Construct Cellulose Acetate/Benzoxazine Hybrid Aerogels with Flame Retardancy, Excellent Thermal Stability, and Superior Mechanical Strength Resistance to Cryogenic Temperature. Biomacromolecules 2022; 23:5056-5064. [PMID: 36331293 DOI: 10.1021/acs.biomac.2c00904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Cellulose aerogels are highly attractive candidates in various applications, such as thermal insulation, adsorption separation, biomedical field, and as carriers, due to their intrinsic merits of low density, high porosity, biodegradability, and renewability. However, the expensive cost of the supercritical drying process and poor mechanical properties limit their practical applications. Herein, a new method was presented to fabricate cellulose acetate/benzoxazine hybrid aerogels (CBAs) with low cost, low drying shrinkage, excellent mechanical properties under cryogenic condition (-196 °C), outstanding thermal insulation, flame retardancy, and good thermal stability by ambient pressure drying. In more detail, the weighted drying shrinkage rate of CBAs-T2 can be controlled to 6.8% (the average value along the radial and axial directions), mainly due to the enhanced skeleton, by introducing polybenzoxazine networking chains. The resultant CBAs-T2 exhibit outstanding mechanical properties at room temperature because of the presence of the polybenzoxazine hybrid in the cellulose networking system. CBAs-T2 still have good mechanical properties even after subjecting them to liquid nitrogen treatment. In addition, the optimal value of thermal conductivity (0.033 W m-1 K-1) is gained easily because of the uniform cross-linking networking structure and small pore size. A superior flame retardance of CBAs-T2 is endowed to achieve self-extinguishment after ignition, which is attributed to the presence of the aromatic ring in the backbone structure. Moreover, the good thermal stability of CBAs-T2 is attributed to the fact that polybenzoxazine components could resist the decomposition of cellulose acetate and inhibit heat release during the combustion process. Our study would provide a novel method for obtaining biomass aerogels including the cellulose-based materials system with low drying shrinkage and superior mechanical properties despite bearing a cryogenic environment by the low-cost ambient pressure drying approach.
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Affiliation(s)
- Sizhao Zhang
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China.,Postdoctoral Research Station on Mechanics, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, Hunan, China
| | - Zhao Wang
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Yangbiao Hu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Hui Ji
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Yunyun Xiao
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Jing Wang
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Guangyu Xu
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
| | - Feng Ding
- Polymer Aerogels Research Center, Jiangxi University of Science and Technology, Nanchang 330013, Jiangxi, China
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Wu YJ, Liu T, Ma JR, Wang WY, Ou SM, Zhao Y, Gao J, Xu G, Sun YQ. [The influence of two kinds of transnasal endoscopic surgery on the outcome status of sinus cavity in patients with eosinophilic chronic rhinosinusitis with nasal polyps]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1450-1456. [PMID: 36707949 DOI: 10.3760/cma.j.cn115330-20220905-00540-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objective: To investigate the trend of postoperative cavity status in patients with eosinophilic chronic sinusitis with nasal polyps (eCRSwNP) who underwent total nasalization surgery and partial reboot surgery. And to discuss the relationship between tissue eosinophil counts and status of postoperative cavity. Methods: Patients with eCRSwNP in four tertiary medical centers (Longgang ENT Hospital, Xiamen Humanity Hospital, Guangdong Clifford Hospital and the First Affiliated Hospital of Sun Yat-Sen University) from March 2018 to October 2021 were divided into 2 groups. The group without previous surgery history was performed for the nasalization surgery, and another group with previous surgery history underwent the part-reboot surgery. The follow-up time after operation was defined as the following 5 stages: 6, 12, 20-24, 36 and more than 42 months. According to FESS-95 Guangzhou standard, status of sinus cavity was assessed and classified into 3 categories: good, better and bad. The association between the sinus cavity status and tissue eosinophil counts in the above 5 stages was analyzed by one-way ANOVA, and P<0.05 was considered statistically significant. Results: A total of 72 eCRSwNP patients finished the follow-up in this study. There were 47 males and 25 females in these patients, aged from 11 to 67 years. A total of 50 cases underwent nasalization surgery and 22 cases underwent partial reboot surgery. With the follow-up time from 6 to 48 months, there were 72 cases (100.0%) who completed 6 months and 12 months follow up, 46 cases (63.9%) for 20-24 months, 36 cases (50.0%) for 32-36 months and 16 cases (22.2%) with the follow-up time more than 42 months. No matter what kind of surgery, there was no "bad" situation of the surgical cavity status 6 months after the operation, and the differentiation gradually occurred more than 12 months after the surgery. Moreover, the rates of "good" cavity status for the 5 stages in the group of nasalization surgery were 78.0%, 66.0%, 56.7%, 47.6% and 42.9%, and were 63.6%, 45.5%, 25.0%, 20.0% and 11.1% in the partial reboot surgery group, respectively, suggesting that the status of nasal cavity in nasalization surgery group was always better than that in partial reboot surgery group in every period. In addition, the "bad" rate was 0, 8.0%, 10.0%, 14.3% and 28.6% in the group of nasalization surgery, and was 0, 27.3%, 18.8%, 33.3% and 55.6% in the partial reboot surgery group, respectively. The average percentage of tissue eosinophil counts in the 72 cases was 42.1%, which had no obvious effect on the status of the surgical cavity (P>0.05). Conclusions: For eCRSwNP patients, the operative cavity status in the patients without previous operation history treated with nasalization surgery is good. The time of 1-2 years after surgery is the main period for sinus lesions. The counts of tissue eosinophils has no significant influence on surgical sinus cavity status in the eCRSwNP patients.
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Affiliation(s)
- Y J Wu
- Department of Otorhinolaryngology, Longgang ENT Hospital & Shenzhen Key Laboratory of ENT Institute, Shenzhen 518172, China
| | - T Liu
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - J R Ma
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - W Y Wang
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - S M Ou
- Department of Otorhinolaryngology of Guangdong Clifford Hospital, Guangzhou 511495, China
| | - Y Zhao
- Department of Pathology of District Maternity and Longgang Heathcare Hospital, Shenzhen 518172, China
| | - J Gao
- Department of Pathology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - G Xu
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China Otorhinolaryngology Hospital of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 518000, China
| | - Y Q Sun
- Department of Otorhinolaryngology of the Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen 510080, China
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Ji C, Yang Y, Fu Y, Pu X, Xu G. Improvement of Ganoderma lucidum water extract on the learning and memory impairment and its mechanism in d-galactose-induced aging mice. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105322] [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: 11/27/2022] Open
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Liu J, Xiang Y, Tang D, Xu G. Gastrointestinal: A case of type 1 gastric neuroendocrine tumor with multiple endocrine neoplasia type 1. J Gastroenterol Hepatol 2022. [PMID: 36343942 DOI: 10.1111/jgh.16026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/13/2022] [Accepted: 09/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- J Liu
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Y Xiang
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - D Tang
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - G Xu
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
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Li H, Xu G, Zhu W, Yuan G. Editorial: Application of natural medicinal products in preventing and ameliorating aging-caused cognitive impairment. Front Pharmacol 2022; 13:1059398. [PMID: 36408250 PMCID: PMC9670168 DOI: 10.3389/fphar.2022.1059398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 10/17/2022] [Indexed: 01/25/2023] Open
Affiliation(s)
- Hongyu Li
- School of Pharmacy, Beihua University, Jilin, China
| | - Guangyu Xu
- School of Pharmacy, Beihua University, Jilin, China
| | - Wenhe Zhu
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Guangxin Yuan
- School of Pharmacy, Beihua University, Jilin, China,*Correspondence: Guangxin Yuan,
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Zhang S, Wang J, Lu K, Xu G, Wang Z, Xiao Y, Ji H, Yang Z, Yang Y, Xiong S, Li Z. Polybenzoxazine Aerogels for Thermal Protection at Extremely High-Temperature/Cryogenic Conditions. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125424] [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: 10/31/2022]
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Liu Q, Qu Y, Wang K, Wu R, Zhang Y, Huang X, Chen X, Wang J, Zhang S, Zhang J, Xiao J, Yi J, Xu G, Luo J. Lymph Node Metastasis Spread Patterns and the Effectiveness of Prophylactic Neck Irradiation in Sinonasal Squamous Cell Carcinoma (SNSCC). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1342] [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: 11/25/2022]
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Xu H, Xu G, Xu Q, Xu C, Zhou X, Bai Y, Yin L, Ding Y, Wang W. MLN2238 exerts its anti-tumor effects via regulating ROS/JNK/mitochondrial signaling pathways in intrahepatic cholangiocarcinoma. Front Pharmacol 2022; 13:1040847. [PMID: 36386204 PMCID: PMC9659592 DOI: 10.3389/fphar.2022.1040847] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/19/2022] [Indexed: 07/30/2023] Open
Abstract
Background: Intrahepatic Cholangiocarcinoma (iCCA) is a highly malignant tumor with limited treatment options that contributes largely to cancer-related deaths worldwide. Compared with traditional transcriptomic analysis, single-cell RNA sequencing (scRNA-seq) is emerging as a more advanced and popular tool for the in-depth exploration of cellular diversity and molecular complexity. As a next-generation proteasome inhibitor, MLN2238 presents better pharmacodynamics, pharmacokinetics, and therapeutic responses in various cancers. However, its effects and mechanisms of action in iCCA remain unknown. Methods: iCCA tumor heterogeneity was determined based on 4,239 qualified scRNA-seq data from 10 iCCA samples. The potential biological roles of proteasome-related genes in iCCA were investigated using a pseudo-trajectory reconstruction. The effect of MLN2238 on iCCA cell proliferation was estimated using the CCK-8, EdU, and clone formation assays. Flow cytometry was used to examine the effect of added MLN2238 on cell cycle and apoptosis levels. Autophagic flux was detected using AdPlus-mCherry-GFP-LC3B cells. ROS levels and mitochondrial membrane potential were determined using DCFH-DA probing and JC-1 staining. JNK activation and mitochondrial apoptosis were observed using western blotting and immunofluorescence microscopy, respectively. Finally, we used a tumor-bearing mouse model to validate its efficacy in vivo for iCCA treatment. Results: Proteasome-related genes were dysregulated in iCCA progression and expressed at higher levels in tumor tissues. MLN2238 suppressed cell proliferation, blocked the cell cycle in the G2/M phase, promoted apoptosis, and induced cytoprotective autophagy in iCCA cells. Furthermore, MLN2238 increased ROS levels and activated the JNK signaling pathway. Inhibition of ROS and JNK activation by NAC and SP600125 significantly reversed MLN2238-induced apoptosis. MLN2238 also suppressed the growth of iCCA tumors in vivo. Conclusion: Proteasome-related genes play pivotal roles in iCCA development. MLN2238, as a proteasome inhibitor, induces apoptosis in iCCA cells through ROS/JNK/mitochondrial signaling pathways, and hence, making MLN2238 a potential therapeutic choice for iCCA.
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Affiliation(s)
- Hao Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Guangyu Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Qianhui Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Chang Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Xiaohu Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yang Bai
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Lu Yin
- Department of Pathology, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuan Ding
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, China
- Research Center of Diagnosis and Treatment Technology for Hepatocellular Carcinoma of Zhejiang Province, Hangzhou, China
- Clinical Medicine Innovation Center of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Disease of Zhejiang University, Hangzhou, China
- Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, Hangzhou, China
- Cancer Center, Zhejiang University, Hangzhou, China
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Kang X, Ma R, Li X, Chen Y, Chen H, Liang Z, Zhou H, Xu G, Dong C, Lin J. 10P Detection of early-stage lung cancer using 5-hydroxymethylcytosine signatures in circulating cell-free DNA. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Zhang P, Zhang Q, Hu X, Li W, Tong Z, Sun T, Teng Y, Wu X, Ouyang Q, Yan X, Cheng J, Liu Q, Feng J, Wang X, Xu G, Wu F, Xia B, Xu B. 229P Dalpiciclib plus fulvestrant in HR+/HER2− advanced breast cancer (ABC): Updated analysis from the phase III DAWNA-1 trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.268] [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: 11/27/2022] Open
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Chen G, Xu Q, Fessing M, Mardaryev A, Sharov A, Xu G, Botchkarev V. 723 DNA dioxygenases Tet2/3 regulate gene promoter accessibility and three-dimensional chromatin topology in lineage-specific loci to control hair growth. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li H, Xu G, Yuan G. Effects of an Armillaria mellea Polysaccharide on Learning and Memory of D-Galactose-Induced Aging Mice. Front Pharmacol 2022; 13:919920. [PMID: 35924065 PMCID: PMC9341523 DOI: 10.3389/fphar.2022.919920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
Armillaria mellea has been known and used in traditional medicine in East Asia for hundreds of years. It has already been reported that A. mellea extracts have various pharmacological effects, and the polysaccharides of A. mellea exhibit antioxidant and anti-apoptotic activities. In this study, a water-soluble polysaccharide (AMP-N-a-1), with an average molecular weight of 17 kD, was isolated and purified from the water extract of A. mellea using DEAE-52, Sepharose CL-4B, and Sephadex G-100 column chromatography. AMP-N-a-1 was mainly composed of Man (1.65%), Glca (1.64%), Rha (1.82%), Gala (2.49%), Glc (90.48%), Gal (0.89%), Xyl (0.42%), and Ara (0.61%). AMP-N-a-1 was used to study the effect on the learning and memory of mice and its underlying mechanisms. The results showed that AMP-N-a-1 could significantly increase the activities of catalase (CAT) and superoxide dismutase (SOD) and reduce the content of nitric oxide (NO) in mouse brain tissue. Meanwhile, AMP-N-a-1 could reduce the contents of norepinephrine (NE) and dopamine (DA) but could increase the content of 5-hydroxytryptamine (5-HT) in mouse brain tissue. In addition, the immunofluorescence experiment showed that AMP-N-a-1 could promote the proliferation of hippocampal dentate gyrus neurons. The above results indicate that AMP-N-a-1 can significantly improve the learning and memory of mice, and the mechanism may be that AMP-N-a-1 can participate in the regulation of learning and memory through a variety of ways.
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Affiliation(s)
- Hongyu Li
- School of Pharmacy, Beihua University, Jilin, China
- School of Basic Medicine, Jiamusi University, Jiamusi, China
| | - Guangyu Xu
- School of Pharmacy, Beihua University, Jilin, China
| | - Guangxin Yuan
- School of Pharmacy, Beihua University, Jilin, China
- *Correspondence: Guangxin Yuan,
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Huang Y, Yang Y, Zhao Y, Guo D, Chen L, Shi L, Xu G. DOCK4 regulates ghrelin production in gastric X/A-like cells. J Endocrinol Invest 2022; 45:1447-1454. [PMID: 35302184 DOI: 10.1007/s40618-022-01785-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/08/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Ghrelin, a gastric hormone, provides a hunger signal to the central nervous system to stimulate food intake. Ghrelin also modulates neuroinflammatory and apoptotic processes. Dedicator of cytokinesis 4 (DOCK4), a guanine nucleotide exchange factor (GEF), is involved in the regulation of neuronal polarization and axon regeneration. However, the effect of DOCK4 on ghrelin production has not been explored. METHODS The expression of DOCK4 in human and mouse stomach was examined by immunohistochemical staining. The synthesis and secretion of ghrelin in Dock4 null mice were evaluated by real-time quantitative PCR, Western blot and ELISA. The effects of DOCK4 on ghrelin production in mHypoE-42 cells were measured by real-time quantitative PCR and Western blot. RESULTS We showed that DOCK4 was expressed in both human and mouse gastric ghrelin cells. The mRNA and protein levels of gastric ghrelin, as well as ghrelin secretion, were remarkably diminished in Dock4 null mice. Furthermore, we showed that overexpression of Dock4 significantly stimulated ghrelin expression, while siRNA knockdown of endogenous Dock4 resulted in a marked decrease of ghrelin in mHypoE-N42 cells. CONCLUSIONS Our results identify DOCK4 as a critical regulator for ghrelin production in gastric X/A-like cells.
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Affiliation(s)
- Y Huang
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - Y Yang
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China
| | - Y Zhao
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - D Guo
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China
- The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
| | - L Chen
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - L Shi
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China.
| | - G Xu
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China.
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