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Mahmoud M, Huang Y, Garimella K, Audano PA, Wan W, Prasad N, Handsaker RE, Hall S, Pionzio A, Schatz MC, Talkowski ME, Eichler EE, Levy SE, Sedlazeck FJ. Utility of long-read sequencing for All of Us. Nat Commun 2024; 15:837. [PMID: 38281971 PMCID: PMC10822842 DOI: 10.1038/s41467-024-44804-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/03/2024] [Indexed: 01/30/2024] Open
Abstract
The All of Us (AoU) initiative aims to sequence the genomes of over one million Americans from diverse ethnic backgrounds to improve personalized medical care. In a recent technical pilot, we compare the performance of traditional short-read sequencing with long-read sequencing in a small cohort of samples from the HapMap project and two AoU control samples representing eight datasets. Our analysis reveals substantial differences in the ability of these technologies to accurately sequence complex medically relevant genes, particularly in terms of gene coverage and pathogenic variant identification. We also consider the advantages and challenges of using low coverage sequencing to increase sample numbers in large cohort analysis. Our results show that HiFi reads produce the most accurate results for both small and large variants. Further, we present a cloud-based pipeline to optimize SNV, indel and SV calling at scale for long-reads analysis. These results lead to widespread improvements across AoU.
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Affiliation(s)
- M Mahmoud
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Y Huang
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - K Garimella
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - P A Audano
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, 06032, USA
| | - W Wan
- Data Sciences Platform, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - N Prasad
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - R E Handsaker
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
| | - S Hall
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - A Pionzio
- Discovery Life Sciences, Huntsville, AL, 35806, USA
| | - M C Schatz
- Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA
| | - M E Talkowski
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, 02141, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - E E Eichler
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA
| | - S E Levy
- HudsonAlpha Institute for Biotechnology, Huntsville, AL, 35806, USA
| | - F J Sedlazeck
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- Department of Computer Science, Rice University, Houston, TX, USA.
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Ye J, Yang Y, Wan W, Ma X, Liu L, Liu Y, He Z, Yuan Z. Mechanical Thrombectomy for Refractory Cerebral Venous Sinus Thrombosis in a Child with Nephrotic Syndrome : A Case Report. J Korean Neurosurg Soc 2023; 66:735-742. [PMID: 36919228 PMCID: PMC10641426 DOI: 10.3340/jkns.2022.0254] [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: 11/25/2022] [Revised: 01/28/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023] Open
Abstract
Nephrotic syndrome (NS) is associated with cerebral venous sinus thrombosis (CVST), which is a rare cerebrovascular disorder in children. Systemic anticoagulation with heparin is the standard therapy for CVST, and mechanical thrombectomy (MT) has been described as a salvage treatment for adult anticoagulant refractory CVST, However, it has never been reported in children. We describe a case of MT for refractory CVST in a child with NS. A 13-year-old boy with newly diagnosed NS presented to an emergency department with acute headache. A head computed tomography showed acute thrombus in the superior sagittal sinus, straight sinus and transverse sinus. The child was started on heparin therapy, but clinically deteriorated and became unresponsive. In view of the rapid deterioration of the condition after anticoagulation treatment, the patient received intravascular treatment. Several endovascular technologies, such as stent retriever and large bore suction catheter have been adopted. After endovascular treatment, the patient's neurological condition was improved within 24 hours, and magnetic resonance venography of the head demonstrated that the CVST was reduced. The child recovered with normal neurological function at discharge. This case highlights the importance of considering MT for refractory CVST, and we suggest that MT may be considered for refractory CVST with NS in children.
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Affiliation(s)
- Jing Ye
- Department of Neurology, The Sixth People’s Hospital of Chengdu, Chengdu, China
| | - Yuan Yang
- Department of Neurology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Weifeng Wan
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xuntai Ma
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Lei Liu
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Yong Liu
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Zhongchun He
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Zhengzhou Yuan
- Department of Neurology, Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Neurology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China
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Sun L, Wan W, Luo Q, Yang F, Song Z, Zhang X, Liang X, Jin M, He L. Study on the relationship between hydrodynamic conditions and arsenic content in Quaternary sediments. Environ Geochem Health 2023:10.1007/s10653-023-01532-9. [PMID: 36905567 DOI: 10.1007/s10653-023-01532-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Groundwater is susceptible to arsenic contamination by sediment with high arsenic content, which is the primary culprit of regional arsenic pollution and poisoning. To explore the influence of the change in hydrodynamic conditions caused by changes in the sedimentary environment over time on arsenic content in sediments during the Quaternary, the hydrodynamic characteristics and arsenic content enrichment of borehole sediments were studied in typical high-arsenic groundwater areas of the Jianghan-Dongting Basin, China. The regional hydrodynamic conditions represented by each borehole location were analyzed, the correlation between the variation in groundwater dynamics characteristics and arsenic content in different hydrodynamic periods was analyzed, and the relationship between arsenic content and grain size distribution was quantitatively investigated using grain size parameter calculation, elemental analysis, and statistical estimates of arsenic content in borehole sediments. We observed that the relationship between arsenic content and hydrodynamic conditions differed between sedimentary periods. Furthermore, arsenic content in the sediments from the borehole at Xinfei Village was significantly and positively correlated with a grain size of 127.0-240.0 μm. For the borehole at Wuai Village, arsenic content was significantly and positively correlated with a grain size of 1.38-9.82 μm size (at 0.05 level of significance). However, arsenic content was inversely correlated with grain sizes of 110.99-716.87 and 133.75-282.07 μm at p values of 0.05 and 0.01, respectively. For the borehole at Fuxing Water Works, arsenic content was significantly and positively correlated with a grain size of 409.6-655.0 μm size (at 0.05 level of significance). Arsenic tended to be enriched in transitional and turbidity facies sediments with normal corresponding hydrodynamic strength but poor sorting. Furthermore, continuous and stable sedimentary sequences were conducive to arsenic enrichment. Fine-grain sediments provided abundant potential adsorption sites for high-arsenic sediments, but finer particle size was not correlated with higher arsenic levels.
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Affiliation(s)
- Liqun Sun
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, 450003, China
| | - Weifeng Wan
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, 450003, China
| | - Qiushi Luo
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, 450003, China
| | - Fengwei Yang
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, 450003, China
| | - Zhiyu Song
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (Under Construction), Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, 450003, China
| | - Xin Zhang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China
| | - Xing Liang
- School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China.
| | - Menggui Jin
- School of Environmental Studies, China University of Geosciences, Wuhan, 430078, China
| | - Lewei He
- No. 7 Geological Team, Henan Nonferrous Metals Geological and Mineral Bureau, Zhengzhou, 450016, China
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Khavnekar S, Wan W, Majumder P, Wietrzynski W, Erdmann PS, Plitzko JM. Multishot tomography for high-resolution in situ subtomogram averaging. J Struct Biol 2023; 215:107911. [PMID: 36343843 DOI: 10.1016/j.jsb.2022.107911] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/29/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
Abstract
Cryo-electron tomography (cryo-ET) and subtomogram averaging (STA) can resolve protein complexes at near atomic resolution, and when combined with focused ion beam (FIB) milling, macromolecules can be observed within their native context. Unlike single particle acquisition (SPA), cryo-ET can be slow, which may reduce overall project throughput. We here propose a fast, multi-position tomographic acquisition scheme based on beam-tilt corrected beam-shift imaging along the tilt axis, which yields sub-nanometer in situ STA averages.
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Affiliation(s)
| | - W Wan
- Vanderbilt University, United States
| | | | | | - P S Erdmann
- MPI for Biochemistry, Germany; Human Technopole, Italy.
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Yu Y, Zhou W, Li Y, Wan W, Yao D, Wei X. Nuclear and Mitochondrial DNA Suggest That Nature Reserve Maintains Novel Haplotypes and Genetic Diversity of Honeybees (Apis cerana). RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422120146] [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: 12/29/2022]
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Wan W, Zhang X, Huang C, Chen L, Yang X, Bao K, Peng T. Preclinical anti-angiogenic and anti-cancer activities of BAY1143269 in glioblastoma via targeting oncogenic protein expression. Pharmacol Res Perspect 2022; 10:e00981. [PMID: 35796398 PMCID: PMC9260954 DOI: 10.1002/prp2.981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 11/06/2022] Open
Abstract
Glioblastoma angiogenesis is critical for tumor growth, making it an appealing target for treatment development. BAY1143269 is a novel inhibitor of mitogen-activated protein kinase interacting serine/threonine-protein kinase 1 (MKN1) and has potent anti-cancer activity. We identified BAY1143269 as an angiogenesis inhibitor, by in vitro and in vivo glioblastoma angiogenesis models. BAY1143269 inhibited the capillary network formation of glioblastoma microvascular endothelial cells (GMECs), particularly the early stage of tubular structure formation. It also inhibited migration and proliferation, and induced apoptosis of GMECs isolated from glioblastoma patients. We found that BAY1143269 acted on GMECs by suppressing the eukaryotic translation initiation factor 4E (eIF4E) and eIF4E-mediated expression of oncogenic proteins, including those involved in cell cycle, epithelial-mesenchymal transition (EMT), and pro-survival. In addition, BAY1143269 suppressed eIF4E phosphorylation, inhibited proliferation, and induced apoptosis of glioblastoma cells. Interestingly, it reduced vascular endothelial growth factor (VEGF) level in tumor cells and culturing medium, demonstrating the inhibitory effect of BAY1143269 on tumor proangiogenic microenvironment. We finally challenged BAY1143269 on the glioblastoma xenograft mice model and observed a significant tumor growth reduction without toxicity in mice receiving oral BAY1143269. Immunoblotting analysis demonstrated significantly less phosphorylated-eIF4E (p-eIF4E), cluster of differentiation 31 (CD31) (microvascular endothelial cell marker), and VEGF in tumors from drug-treated mice. In summary, the inhibition of glioblastoma angiogenesis with BAY1143269 may provide an alternative approach for anti-glioblastoma therapy.
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Affiliation(s)
- Weifeng Wan
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Xin Zhang
- Department of NeurosurgeryLuzhou People's HospitalLuzhouPeople's Republic of China
| | - Changren Huang
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Ligang Chen
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Xiaobo Yang
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Kunyang Bao
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Tangming Peng
- Department of NeurosurgeryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
- Sichuan Clinical Research Center for NeurosurgeryLuzhouChina
- Academician (Expert) Workstation of Sichuan ProvinceLuzhouChina
- Neurological Diseases and Brain Function LaboratoryAffiliated Hospital of Southwest Medical UniversityLuzhouChina
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Fu X, Xiong B, Zhao M, Wan W, Zhang S, Wu X, Xu J. Quinacrine is active in preclinical models of glioblastoma through suppressing angiogenesis, inducing oxidative stress and activating AMPK. Toxicol In Vitro 2022; 83:105420. [PMID: 35724837 DOI: 10.1016/j.tiv.2022.105420] [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: 01/01/2022] [Revised: 05/22/2022] [Accepted: 06/14/2022] [Indexed: 02/08/2023]
Abstract
The poor prognosis of glioblastoma requires new innovative treatment strategies. We and others have shown that targeting tumor as well as angiogenesis in glioblastoma are effective therapeutic strategies. In line with these efforts, this work reveals that Quinacrine, an antimalarial drug, is a dual inhibitor of angiogenesis and glioblastoma. Using multiple glioblastoma cell lines, we found that Quinacrine inhibited proliferation and induced apoptosis in these cells, and acted in synergy with Temozolomide. Quinacrine potently inhibited tubular structure formations of glioblastoma microvascular endothelial cell (GMVEC) isolated from glioblastoma patients, especially for early stage tubular structure formation. Although Quinacrine induces apoptosis in GMVEC, the anti-angiogenic activity of Quinacrine is independent of its pro-apoptotic activity in GMVECs. Quinacrine inhibits glioblastoma angiogenesis and growth in vivo, and acts synergistically with Temozolomide in inhibiting glioblastoma growth in mice. Mechanistically, we found that Quinacrine acts on glioblastoma through inducing oxidative stress, impairing mitochondrial function and activating AMP-activated protein kinase (AMPK). Our work is the first to demonstrate the anti-angiogenic activity of Quinacrine. Our findings highlight Quinacrine as an attractive candidate to support treatment of glioblastoma.
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Affiliation(s)
- Xiaohong Fu
- Department of Neurosurgery, The First People's Hospital of Zunyi, Zunyi, People's Republic of China; Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Bo Xiong
- Department of Neurosurgery, The First People's Hospital of Zunyi, Zunyi, People's Republic of China
| | - Min Zhao
- Department of Pharmacy, The First People's Hospital of Zunyi, Zunyi, People's Republic of China
| | - Weifeng Wan
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Shaofu Zhang
- Department of Neurosurgery, The First People's Hospital of Zunyi, Zunyi, People's Republic of China
| | - Xuedong Wu
- Department of Neurosurgery, The First People's Hospital of Zunyi, Zunyi, People's Republic of China
| | - Jianguo Xu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.
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Du Y, Wan W, Li Q, Zhang H, Qian H, Cai J, Wang J, Zheng X. Impacts of climate and human activities on Daihai Lake in a typical semi-arid watershed, Northern China. PLoS One 2022; 17:e0266049. [PMID: 35609017 PMCID: PMC9129052 DOI: 10.1371/journal.pone.0266049] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 03/11/2022] [Indexed: 11/25/2022] Open
Abstract
A rapid shrinkage of Daihai Lake was found in recent decades. The present study analyzed the characteristics of Daihai Lake shrinkage and quantified the contribution of climate and human activities. The results of Mann-Kendall- Sneyers test and moving t-test showed that there was an obvious mutation point of lake level in 2006 and the descending speed of Daihai Lake level post-2006 (-0.46m/a) was 3.22 times that of pre-2006 (-0.14m/a). The centroid of Daihai Lake moved 1365.18 m from southwest to northeast during 1989 ~ 2018 with an average speed of 47.08 m/a. The results of Mann-Kendall trend test revealed that the annual evaporation showed a significant downward trend with a rate of approximately -5.33 mm/a, while no significant trend was found in precipitation. Daihai lake water level showed a very weak relationship with evaporation (r = 0.078, p < 0.01) and precipitation (p>0.05) respectively. Daihai Lake was influenced by human activities mainly from land use/ land cover, building reservoirs, pumping groundwater and directly consuming Daihai Lake water by Daihai power plant (DHPP). It was thought-provoking that DHPP began to consume Daihai lake water in 2006, which was consistent with abrupt change of Daihai lake level. The proportion of human impact was fluctuating upward. Human factors were the main factor of lake water reduction in last 10 years and the 5-year average contribution of human activities to Daihai Lake shrinkage was more than 61.99%. More attention and economic support should be given to prevent the continuous shrinkage of Daihai Lake.
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Affiliation(s)
- Yajun Du
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
- Key Laboratory of Water Management and Water Security for Yellow River Basin, Ministry of Water Resources (under construction), Basin, China
- School of water and Environment, Chang’an University, Xi’an, Shaanxi, China
| | - Weifeng Wan
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
| | - Qingbo Li
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
| | - Haifeng Zhang
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
| | - Hui Qian
- School of water and Environment, Chang’an University, Xi’an, Shaanxi, China
| | - Jinlong Cai
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
| | - Junzhi Wang
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
| | - Xiaokang Zheng
- Yellow River Engineering Consulting Co., Ltd. (YREC), Zhengzhou, Henan, China
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Wu F, Tian J, She Z, Liu Y, Wan W, Wen C. [Clinical features of children with Cunninghamella spp. infection: a case report and literature review]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:780-784. [PMID: 35673925 DOI: 10.12122/j.issn.1673-4254.2022.05.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We report a case of mucormycosis induced by Cunninghamella spp. infection in a ten-year-old girl with acute lymphoblastic leukemia, who developed fever and respiratory symptoms after chemotherapy and was diagnosed with invasive fungal disease. Peripheral blood DNA sequences were analyzed using metagenomic next-generation sequencing (mNGS), and by comparison with the Pathogens Metagenomics Database (PMDB), we identified Cunninghamella spp. with sequence number 514 as the pathogen. The patient was treated with amphotericin B combined with posaconazole and showed a favorable response. We searched Pubmed, Embase, CNKI, and Wanfang database for reports of cases of Cunninghamella spp. infection in children and retrieved 22 reported cases (including 12 males) with a median age of 13.5 (3-18) years. In these 22 cases, hematological malignancy was the most common underlying condition (19/22), and most of patients experienced an acute onset and rapid progression with respiratory symptoms (14/20) and fever (16/20) as the most common symptoms. CT imaging often showed unilateral lesions with varying imaging findings, including pulmonary nodules or masses, infiltrative changes, and pleural effusion. Definite diagnoses were established in 18 of the cases, and 4 had probable diagnoses; the lungs and skin were the most frequent organs compromised by the infection. A definite diagnosis of Cunninghamella spp. infection still relied on histopathological examination and fungal culture, but the molecular techniques including PCR and mNGS had shown potentials in the diagnosis. Almost all the cases received antifungal treatment after diagnosis (21/22), and 13 patients also underwent surgeries. Death occurred in 9 (42%) of the cases at a median of 19 (4-54) days after onset of the signs or symptoms. The patients receiving antifungal therapy combined with surgery had a high survival rate (9/13, 69%) than those with antifungal therapy alone (3/8, 37%). Invasive fungal disease is a common complication in immunoco-mpromised patients, but Cunninghamella spp. infection is rare and has a high mortality rate. In cases highly suspected of this disease, active diagnosis and early treatment are critical to improve the survival outcomes of the patients.
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Affiliation(s)
- F Wu
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - J Tian
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Z She
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Y Liu
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - W Wan
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - C Wen
- Department of Pediatrics, Second Xiangya Hospital of Central South University, Changsha 410011, China
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Xiao W, Jiang Z, Wan W, Pan W, Xu J. miR-145-5p targets MMP2 to protect brain injury in hypertensive intracerebral hemorrhage via inactivation of the Wnt/β-catenin signaling pathway. Ann Transl Med 2022; 10:571. [PMID: 35722425 PMCID: PMC9201149 DOI: 10.21037/atm-22-1897] [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] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/17/2022] [Indexed: 11/07/2022]
Abstract
Background Differences in microRNA (miRNA) expression after hypertensive intracerebral hemorrhage (HICH) have been reported in human and animal models. miRNA-145 plays an important role in vascular endothelial cells. The purpose of this work was to determine the role of miR-145-5p in HICH and the molecular mechanisms by which it acts. Methods In this study, we constructed a model of hemoglobin-induced HICH in rats and used thrombin-treated human brain microvascular endothelial cells (hBMECs) to create a HICH cell model. To determine brain damage, we tested the rats’ neurological performance and measured the cerebral water level of their brain tissue. Cell counting kit 8 (CCK8) was used to determine the viability of cells. Apoptosis was detected using the terminal TdT-mediated dUTP nick end labeling (TUNEL) assay and flow cytometry (FCM). Starbase and TargetScan were used to predict and confirm target genes. Luciferase reporter gene experiments were used to confirm the predictions. Reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting were used to identify the associated genes and proteins. Results We observed a reduction in miRNA-145-5p expression in both the HICH cell model and the rat model. miRNA-145-5p overexpression increased cell survival and preserved newly created blood vessels and vascular permeability in hBMECs. MiRNA-145-5p has been predicted to target matrix metalloproteinase 2 (MMP2). Additionally, MMP2 was identified as a miR-145-5p target gene and shown to be substantially expressed in the thrombin-treated hBMECs. MMP2 overexpression suppressed miR-145-5p-mediated effects and increased hBMECs’ malfunction. In comparison with controls, the HICH + AAV-miR-145-5p group performed better on behavioral tests and had less brain water. Additionally, miR-145-5p injection increased ZO-1 and occludin expressions, as determined by immunohistochemical staining in the HICH rat model. Conclusions miRNA-145-5p protects against brain injury following HICH by targeting MMP2, suggesting a possible therapeutic mechanism for HICH.
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Affiliation(s)
- Wenfeng Xiao
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
- Department of Neurosurgery, Sichuan Mianyang 404 Hospital, Mianyang, China
| | - Zhengfang Jiang
- Department of Neurosurgery, Sichuan Mianyang 404 Hospital, Mianyang, China
| | - Weifeng Wan
- Department of Neurosurgery, Southwest Medical University, Luzhou, China
| | - Wen Pan
- Department of Neurosurgery, Shougang Shuigang General Hospital, Liupanshan, China
| | - Jianguo Xu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
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Yu Y, Ran Y, Zhan H, Wan W, Shi L, Li M, Wei X. The Importance of Genetic Isolation in Preserving the Gene Pool of Apis cerana in Fanjingshan Nature Reserve. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422020144] [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: 11/23/2022]
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Ding L, Zhou R, Yuan Y, Yang H, Li J, Yu T, Liu C, Wang J, Li S, Gao H, Deng Z, Li N, Wang Z, Gong Z, Liu G, Xie J, Wang S, Rong Z, Deng D, Wang X, Han S, Wan W, Richter L, Huang L, Gou S, Liu Z, Yu H, Jia Y, Chen B, Dang Z, Zhang K, Li L, He X, Liu S, Di K. A 2-year locomotive exploration and scientific investigation of the lunar farside by the Yutu-2 rover. Sci Robot 2022; 7:eabj6660. [PMID: 35044796 DOI: 10.1126/scirobotics.abj6660] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The lunar nearside has been investigated by many uncrewed and crewed missions, but the farside of the Moon remains poorly known. Lunar farside exploration is challenging because maneuvering rovers with efficient locomotion in harsh extraterrestrial environment is necessary to explore geological characteristics of scientific interest. Chang'E-4 mission successfully targeted the Moon's farside and deployed a teleoperated rover (Yutu-2) to explore inside the Von Kármán crater, conveying rich information regarding regolith, craters, and rocks. Here, we report mobile exploration on the lunar farside with Yutu-2 over the initial 2 years. During its journey, Yutu-2 has experienced varying degrees of mild slip and skid, indicating that the terrain is relatively flat at large scales but scattered with local gentle slopes. Cloddy soil sticking on its wheels implies a greater cohesion of the lunar soil than encountered at other lunar landing sites. Further identification results indicate that the regolith resembles dry sand and sandy loam on Earth in bearing properties, demonstrating greater bearing strength than that identified during the Apollo missions. In sharp contrast to the sparsity of rocks along the traverse route, small fresh craters with unilateral moldable ejecta are abundant, and some of them contain high-reflectance materials at the bottom, suggestive of secondary impact events. These findings hint at notable differences in the surface geology between the lunar farside and nearside. Experience gained with Yutu-2 improves the understanding of the farside of the Moon, which, in return, may lead to locomotion with improved efficiency and larger range.
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Affiliation(s)
- L Ding
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - R Zhou
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Yuan
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - J Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - T Yu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - C Liu
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - J Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Gao
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Deng
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - N Li
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Wang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Z Gong
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - G Liu
- Department of Aerospace Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
| | - J Xie
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Wang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - Z Rong
- Beijing Aerospace Control Center, Beijing 100094, China
| | - D Deng
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X Wang
- Beijing Aerospace Control Center, Beijing 100094, China.,Key Laboratory of Science and Technology on Aerospace Flight Dynamics, Beijing 100094, China
| | - S Han
- Beijing Aerospace Control Center, Beijing 100094, China
| | - W Wan
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - L Richter
- Large Space Structures GmbH, Hauptstrasse 1, D-85386 Eching, Germany
| | - L Huang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - S Gou
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
| | - Z Liu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - H Yu
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China
| | - Y Jia
- China Academy of Space Technology, Beijing 100094, China
| | - B Chen
- China Academy of Space Technology, Beijing 100094, China
| | - Z Dang
- China Academy of Space Technology, Beijing 100094, China
| | - K Zhang
- Beijing Aerospace Control Center, Beijing 100094, China
| | - L Li
- Beijing Aerospace Control Center, Beijing 100094, China
| | - X He
- Beijing Aerospace Control Center, Beijing 100094, China
| | - S Liu
- Beijing Aerospace Control Center, Beijing 100094, China
| | - K Di
- State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
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Liu X, Bao K, Luo W, Wan W, Peng T, Huang C. Flow diverters for the posterior inferior cerebellar artery aneurysms: A systematic review and a single-arm meta-analysis. Interv Neuroradiol 2021; 28:482-488. [PMID: 34519241 PMCID: PMC9326854 DOI: 10.1177/15910199211035902] [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: 11/16/2022] Open
Abstract
BACKGROUND The treatment of posterior inferior cerebellar artery aneurysms is controversial. Recently, flow diverters have emerged as an attractive treatment option. Here, we performed a systematic review and meta-analysis of the angiographic and clinical outcomes of flow diverter-treated posterior inferior cerebellar artery aneurysms. METHODS We searched the PubMed, EMBASE and Web of Science databases for studies published from inception to January 2021. We included studies that described flow diverters procedures for posterior inferior cerebellar artery aneurysms with ≥2 patients. The outcomes were the complete occlusion rate and flow diverter-related complication rate. Meta-analysis was performed using a random or fixed effects model based on heterogeneity. RESULTS We included six studies involving 46 posterior inferior cerebellar artery aneurysms. There were 14 ruptured aneurysms. All flow diverters were successfully released and the technical success rate was 100%. The complete occlusion rate was 81% (95% confidence interval = 65-93%; I2 = 0.00%; P < 0.01). The flow diverter-related complication rate was 18% (95% confidence interval = 5-36%; I2 = 0.00%; P < 0.01). One patient died of rebleeding. The mortality rate was <1% (95% confidence interval = -1-1%; I2 = 0.00%; P = 0.951). CONCLUSIONS Treatment of posterior inferior cerebellar artery aneurysms with flow diverters is feasible and carries a high degree of technical success. However, this treatment is underutilized in patients with posterior inferior cerebellar artery aneurysms due to a higher complication rate and lower occlusion rate compared with clipping and traditional endovascular treatment. Further well-designed prospective and randomized studies are required to fully understand the effects of flow diverters especially in posterior inferior cerebellar artery aneurysms patients requiring endovascular treatment.
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Affiliation(s)
- Xiang Liu
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
| | - Kunyang Bao
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
| | - Wenzhang Luo
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
| | - Weifeng Wan
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
| | - Tangming Peng
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
| | - Changren Huang
- Department of Neurosurgery, 556508The Affiliated Hospital of Southwest Medical University, P.R. China.,Sichuan Clinical Research Centre for Neurosurgery, P.R. China.,Academician (Expert) Workstation of Sichuan Province, P.R. China
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Chen C, Yang S, Jiang Z, Wan W, Zou H, Liang M. POS0884 THE ENHANCED LIVER FIBROSIS (ELF) SCORE AS A BIOMARKER OF SKIN FIBROSIS IN SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Serum fibrotic markers for systemic sclerosis (SSc) remain limited. The Enhanced Liver Fibrosis (ELF) score, originally derived and validated in patients with chronic liver disease, is an algorithm combining 3 serum markers, known as procollagen type III amino terminal propeptide (PIIINP), tissue inhibitor of metalloproteinases 1 (TIMP-1), and hyaluronic acid (HA). The combined score was proved to be superior to the single components in reflecting the severity of liver fibrosis. However, the performance of ELF score and its components has not been fully validated in SSc.Objectives:To investigate PIIINP, TIMP-1, HA, and the combined algorithm ELF score as fibrotic markers for SSc skin involvement.Methods:Eighty SSc patients (44 dcSSc and 36 lcSSc), fulfilling the 2013 ACR/EULAR criteria with the absence of chronic liver diseases, were enrolled. Eighty age- and sex- matched healthy controls were also included. Serum PIIINP and HA levels were quantified by chemiluminescence immunoassay. Serum TIMP-1 levels were determined by enzyme-linked immunosorbent assay. The ELF score was calculated using the formula ELF score= 2.494 + 0.846*ln(HA) + 0.735*ln(PIIINP) + 0.391*ln(TIMP-1). Results were correlated with clinical profiles including modified Rodnan skin score (mRSS) and interstitial lung disease (ILD).Results:Compared with healthy controls, patients with SSc showed significantly elevated serum PIIINP (11.2±4.8 vs. 5.73±1.4μg/L, p<0.001), TIMP-I (123.7±78.6 vs. 67.8±26.5 ng/ml, p<0.001), and ELF score (10.5±0.9 vs. 9.7±0.4, P<0.001). Even higher levels of PIIINP, TIMP-1, and ELF score were observed in dcSSc patients, compared with lcSSc patients (p<0.001, p=0.024, p=0.003, respectively). No significant difference was found in the levels of serum HA between patients and controls. Strong correlations were observed between mRSS and ELF score (r=0.54, p<0.001), and between mRSS and PIIINP(r=0.62, p<0.001), whereas only weak correlations could be observed between mRSS and TIMP-1 (r=0.28, p=0.02), and between mRSS and HA (r=0.26, p=0.03). When stratified by ELF score, using cutoffs proposed for liver fibrosis and cirrhosis, SSc patients with ELF<9.8 showed the lowest mRSS on average, while patients with ELF>11.3 showed the highest (p<0.001). When stratified by serum PIIINP levels, using the 25th and 75th percentiles, SSc patients with serum PIIIINP levels<7.8μg/L showed the lowest mRSS on average, while patients with PIIINP>14.0μg/L showed the highest (p<0.001). Neither the ELF score nor its components showed significant difference between patients with and without ILD.Conclusion:The ELF score could be used for reflecting the severity of overall skin involvement in SSc, and serum PIIINP also increased in parallel with the increase of mRSS. Longitudinal prospective studies exploring ELF score or serum PIIINP as fibrotic markers and outcome measures of SSc are warranted.References:[1]Lichtinghagen R, Pietsch D, Bantel H, et al. The Enhanced Liver Fibrosis (ELF) score: Normal values, influence factors and proposed cut-off values. Journal of Hepatology. 2013; 59: 236-42.[2]Abignano G, Blagojevic J, Bissell LA, et al. European multicentre study validates enhanced liver fibrosis test as biomarker of fibrosis in systemic sclerosis. Rheumatology. 2019; 58: 254-59.Figure 1.Correlations of mRSS with ELF score (A) and serum PIIINP (B) and distribution of mRSS among different ELF (C) and PIIINP (D) ranges.Acknowledgements:The authors have no acknowledgements to declare.Disclosure of Interests:None declared
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Chen C, Yang S, Jiang Z, Wan W, Zou H, Liang M. POS0869 PREDICTIVE VALUE OF ANTI-INTERFERON-INDUCIBLE PROTEIN 16 ANTIBODIES FOR DIGITAL ULCERS OF SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Interferon-inducible protein 16 (IFI-16) is constitutively expressed in vascular endothelial cells and can inhibit the proliferation of human endothelial cells and the formation of capillary-like structures in vitro. Anti-IFI-16 antibodies were reported in 21%-29% of patients with systemic sclerosis (SSc) and were associated with digital vascular events in a few retrospective studies.Objectives:To evaluate the presence and the clinical implication of anti-IFI-16 antibodies in Chinese SSc cohort, focusing on the associations with vasculopathy indexes, and to investigate the predictive value of anti-IFI-16 antibodies for the development of digital ulcers (DUs) in SSc prospectively.Methods:Patients with SSc presenting to our center between July 2018 and September 2018 were prospectively enrolled. Serum from 42 SSc patients and 42 age- and sex-matched healthy controls were analyzed for anti-IFI-16 antibodies by enzyme-linked immunosorbent assay (ELISA), and was considered positive if the optical density (OD) value was above the mean OD of controls plus two standard deviations. Tissue immunofluorescence was used to evaluate the expression of IFI16 in skin biopsy samples obtained from SSc patients and normal controls. At baseline, nailfold video-capillaroscopy was performed to assess nailfold capillary density of SSc patients. Power Doppler ultrasound was used to grade finger pulp blood flow (0-no observed flow; 1-decreased flow; 2-normal flow), and to measure ulnar and radial artery blood flow and resistive index (RI). All patients were followed up for 6 months to see whether they experienced new onset or recurrent DUs. The association of anti-IFI-16 antibodies with DUs was analyzed using logistic regression.Results:Of the 42 SSc patients, 8 (19.0%) were positive for anti-IFI-16 antibodies. Immunofluorescence of skin biopsy samples from SSc patients exhibited enhanced staining of IFI-16 in the dermis, and colocalization with endothelial marker CD31. SSc patients who were positive for anti-IFI-16 antibodies showed higher ulnar artery RI at baseline (0.95±0.09 vs. 0.86±0.09, p=0.015), while no significant differences were found for other vascular parameters, nor for clinical or demographic profiles. Within 6-month follow-up, 14 (33.3%) patients experienced new-onset or recurrent DUs. Univariate logistic regression revealed the presence of DUs at enrollment (p=0.009), anti-IFI-16 antibody (p=0.012), finger pulp blood flow (p=0.027), and ulnar artery RI (p=0.008) could be the predictors for the development of DUs. Multivariate analysis further identified DUs at enrollment (odds ratio [OR]: 10.85; 95% confidence interval [CI]: 1.61-73.18; p=0.014) and anti-IFI-16 antibody (OR: 15.00; 95% CI: 1.13-199.18; p=0.040) as independent risk factors. Among patients without DUs at enrollment, new-onset ulcers occurred in 80% (4/5) and 4.5% (1/22) of those with and without anti-IFI-16 antibody, respectively (p=0.001).Conclusion:Anti-IFI-16 antibody is associated with vasculopathy in SSc and could be used as a novel biomarker for indicating the development of DUs.References:[1]McMahan ZH, Shah AA, Vaidya D, et al. Anti-interferon-inducible protein 16 antibodies associate with digital gangrene in patients with Scleroderma. Arthritis Rheumatol. 2016; 68(5): 1262-71.[2]McMahan ZH, Cottrell TR, Wigley FM, et al. Autoantigens targeted in scleroderma patients with vascular disease are enriched in endothelial lineage cells. Arthritis Rheumatol. 2016; 68(10): 2540–49.Figure 1.Multivariate logistic analysis for new or recurrent digital ulcers.Acknowledgements:The authors would like to thank Doctor Yi Cheng for performing Power Doppler ultrasound assessment.Disclosure of Interests:None declared
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Zhang L, Sun Z, Fu X, Wan W, Ge J, Xia Y, Xu D, Nan F, Yu H, Zhang M, Li L, Li X, Li Z, Wang X, Chang Y, Yan J, Wu X, Zhou Z. THE SURVIVAL OF 2852 PATIENTS WITH LYMPHOMA: A SINGLE CENTER STUDY FROM CHINA. Hematol Oncol 2021. [DOI: 10.1002/hon.109_2881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L. Zhang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Sun
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Fu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - W. Wan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - J. Ge
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Y. Xia
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - D. Xu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - F. Nan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - H. Yu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - M. Zhang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - L. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Li
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Wang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Y. Chang
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - J. Yan
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - X. Wu
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
| | - Z. Zhou
- The First Affiliated Hospital of Zhengzhou University Department of Oncology Zhengzhou China
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Pan W, Gao Y, Wan W, Xiao W, You C. LncRNA SAMMSON Overexpression Suppresses Vascular Smooth Muscle Cell Proliferation via Inhibiting miR-130a Maturation to Participate in Intracranial Aneurysm. Neuropsychiatr Dis Treat 2021; 17:1793-1799. [PMID: 34113109 PMCID: PMC8187098 DOI: 10.2147/ndt.s311499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/21/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND MiR-130a is a recently identified critical player in vascular smooth muscle cell (VSMC) proliferation, which participates in intracranial aneurysm (IA). However, the involvement of miR-130a in IA and its upstream regulator are unknown. Our preliminary sequencing analysis revealed a close correlation between miR-130a and lncRNA SAMMSON across IA samples. Therefore, we further studied the crosstalk between SAMMSON and miR-130a in IA. METHODS SAMMSON and miR-130a expression were measured using RT-qPCR. SAMMSON subcellular location was analyzed with nuclear fractionation assay. Their direct interaction was explored with RNA pull-down assay. The role of SAMMSON in miR-130a maturation was studied with overexpression analysis. VSMC cell proliferation was analyzed with BrdU assay. RESULTS SAMMSON and premature miR-130a were deregulated in IA, while mature miR-130a was upregulated in IA. SAMMSON is localized in both the nucleus and cytoplasm, and direct interaction between SAMMSON and miR-130a was observed. SAMMSON overexpression suppressed miR-130a maturation in VSMCs and reduced the enhancing effects of miR-130a on VSMC cell proliferation. CONCLUSION SAMMSON is overexpressed in IA and suppresses VSMC proliferation via inhibiting miR-130a maturation.
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Affiliation(s)
- Wen Pan
- Brain Center, Shougang Shuigang General Hospital, Liupanshui City, Guizhou Province, 553000, People's Republic of China
| | - Yuan Gao
- Department of Neurosurgery, Liupanshui People's Hospital, Liupanshui City, Guizhou Province, 553001, People's Republic of China
| | - Weifeng Wan
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou City, Sichuan Province, 646000, People's Republic of China
| | - Wenfeng Xiao
- Department of Neurosurgery, Sichuan Mianyang 404 Hospital, Mianyang City, Sichuan Province, 510700, People's Republic of China
| | - Chao You
- Department of Neurosurgery West China Hospital, Sichuan University, Chengdu Province, 610041, People's Republic of China
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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Xu F, Chen R, Ma C, Tang L, Wan W, You F, Chen L, Li J, Chen Z, Liang F. ELECTROACUPUNCTURE IMPROVES INSULIN SENSITIVITY IN HIGH-FAT DIET-INDUCED INSULIN RESISTANT RATS BY ACTIVATING SIRT1 AND GLUT4 IN QUADRICEPS FEMORIS. Acta Endocrinol (Buchar) 2020; 16:280-287. [PMID: 33363647 PMCID: PMC7748239 DOI: 10.4183/aeb.2020.280] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVES To assess the effects of electroacupuncture (EA) at the Zusanli (ST36), Guanyuan (CV4), Zhongwan (CV12), and Fenglong (ST40) acupoints on sirtuin 1 (SIRT1) and glucose transporter type 4 (GLUT4) expression in high-fat diet (HFD)-induced insulin-resistant (IR) rats. METHODS Wistar rats were divided into normal control (NC), HFD, and HFD+EA groups. NC rats were fed a standard chow diet and did not receive EA. After being fed an HFD for eight weeks, rats in the HFD+EA group received EA at 2 Hz five times a week for eight weeks. Rats in the HFD group did not receive EA. RESULTS In HFD-induced IR rats, EA inhibited body weight increase and water intake, which were observed in HFD rats. EA had no effect on fasting blood glucose and postprandial blood sugar levels. Intraperitoneal insulin tolerance testing revealed that EA enhanced insulin sensitivity in HFD-induced IR rats. Compared with NC rats, SIRT1 and GLUT4 were downregulated in the quadriceps femoris of HFD-fed rats but were increased after eight weeks of EA stimulation. CONCLUSIONS EA enhanced HFD-induced insulin resistance by activating SIRT1 and GLUT4 in the quadriceps femoris. These results provide powerful evidence supporting the beneficial effects of EA on HFD-induced insulin resistance.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - F. Liang
- Hubei University of Chinese Medicine, Department of Acupuncture and Moxibustion, Wuhan, China
- Wuhan, China
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Wan W, Christensen NB, Sandvik AW, Tregenna-Piggott P, Nilsen GJ, Mourigal M, Perring TG, Frost CD, McMorrow DF, Rønnow HM. Temperature dependence of the(π,0)anomaly in the excitation spectrum of the 2D quantum Heisenberg antiferromagnet. J Phys Condens Matter 2020; 32:374007. [PMID: 32050188 DOI: 10.1088/1361-648x/ab757a] [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] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/12/2020] [Indexed: 06/10/2023]
Abstract
It is well established that in the low-temperature limit, the two-dimensional quantum Heisenberg antiferromagnet on a square lattice (2DQHAFSL) exhibits an anomaly in its spectrum at short-wavelengths on the zone-boundary. In the vicinity of thepoint the pole in the one-magnon response exhibits a downward dispersion, is heavily damped and attenuated, giving way to an isotropic continuum of excitations extending to high energies. The origin of the anomaly and the presence of the continuum are of current theoretical interest, with suggestions focused around the idea that the latter evidences the existence of spinons in a two-dimensional system. Here we present the results of neutron inelastic scattering experiments and Quantum Monte Carlo calculations on the metallo-organic compound Cu(DCOO)D2O (CFTD), an excellent physical realisation of the 2DQHAFSL, designed to investigate how the anomaly atevolves up to finite temperatures. Our data reveal that on warming the anomaly survives the loss of long-range, three-dimensional order, and that it is thus a robust feature of the two-dimensional system. With further increase of temperature the zone-boundary response gradually softens and broadens, washing out theanomaly. This is confirmed by a comparison of our data with the results of finite-temperature Quantum Monte Carlo simulations where the two are found to be in good accord. In the vicinity of the antiferromagnetic zone centre, there was no significant softening of the magnetic excitations over the range of temperatures investigated.
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Affiliation(s)
- W Wan
- Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - N B Christensen
- Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - A W Sandvik
- Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, United States of America
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - P Tregenna-Piggott
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - G J Nilsen
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot OX11 0QX, United Kingdom
| | - M Mourigal
- School of Physics, Georgia Institute of Technology, 837 State Street, Atlanta, GA 30332, United States of America
| | - T G Perring
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot OX11 0QX, United Kingdom
| | - C D Frost
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot OX11 0QX, United Kingdom
| | - D F McMorrow
- London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - H M Rønnow
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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21
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Wang JG, Zhao XG, Wang XL, Liu MX, Wan W. Low expression of miR-1 promotes osteogenic repair of bone marrow mesenchymal stem cells by targeting TLR1. Eur Rev Med Pharmacol Sci 2020; 24:3492-3500. [PMID: 32329822 DOI: 10.26355/eurrev_202004_20808] [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: 11/12/2022]
Abstract
OBJECTIVE Bone marrow mesenchymal stem cells (BMSCs) promote bone tissue repair. MiR-1 regulates myogenic and osteogenic differentiation of human adipose tissue stem cells. However, miR-1's effect on BMSCs osteogenesis is unclear. MATERIALS AND METHODS Rat BMSCs were isolated and divided into control group, miR-1 group, and si-miR-1 group respectively transfected with miR-1 plasmid and miR-1 siRNA followed by analysis of cell proliferation by MTT assay and Caspase 3 activity. The expression of osteogenic genes Runx2 and OPN was measured by Real Time-PCR. Healthy male Sprague-Dawley rats were separated into fracture group, NC group, and si-miR-1 group followed by analysis of bone mineral density, miR-1 level by Real Time-PCR, type I collagen, and BMP-2 by enzyme-linked immunosorbent assay (ELISA), and TLR1 expression by Western blot. RESULTS Transfection of miR-1 siRNA into BMSCs significantly downregulated miR-1 expression, promoted BMSCs cell proliferation, inhibited Caspase 3 activity, as well as promoted osteogenic genes Runx2 and OPN expression and decreased TLR1 expression (p<0.05). The upregulation of miR-1 expression significantly reversed the above changes. TLR1 is a target of miR-1. Downregulation of miR-1 expression in BMSCs of fractured rats significantly increased bone density and ALP activity, promoted type I collagen and BMP-2 expression, and decreased TLR1 expression (p<0.05). CONCLUSIONS The downregulation of miR-1 promotes BMSCs osteogenic differentiation via targeting TLR1, which promotes osteogenic differentiation and bone healing.
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Affiliation(s)
- J-G Wang
- Department of Joint Surgery, Hiser Medical Center of Qingdao, Qingdao, Shandong, China.
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22
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Yang X, Peng J, Pang J, Wan W, Chen L. A functional polymorphism in the promoter region of miR-155 predicts the risk of intracranial hemorrhage caused by rupture intracranial aneurysm. J Cell Biochem 2019; 120:18618-18628. [PMID: 31338876 DOI: 10.1002/jcb.28785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/10/2019] [Indexed: 01/28/2023]
Abstract
BACKGROUND This study aimed to study the effect and underlying molecular mechanisms of single-nucleotide polymorphism (SNP) rs767649 during the pathogenesis of intracranial aneurysm (IA) rupture. METHOD Real-time PCR and Western blot analysis were performed to detect the differentiated expression of miR-155 and matrix metalloproteinase-2 (MMP-2) among different sample groups. Computational analysis and luciferase assay were conducted to study the effect of SNP rs767649 on the expression of miR-155 as well as the regulatory relationship between miR-155 and MMP-2. RESULTS In unruptured IA samples, the expression of miR-155 was upregulated while the expression of MMP-2 was downregulated compared with the ruptured IA samples. Similarly, the expression of miR-155 was upregulated while the expression of MMP-2 was downregulated in samples genotyped as AA/AT compared with samples genotyped as TT. In addition, compared with the negative controls, the luciferase activities of cells treated with rs767649A and rs767649T were both elevated with rs767649A-transfected cells expressing the highest luciferase activity. Furthermore, a negative relationship was established between miR-155 and MMP-2 by measuring the luciferase activity of cells cotransfected with miR-155 and the wild-type 3'-untranslated region of MMP-2. CONCLUSION The results of this study showed that the SNP rs767649 in the promoter of miR-155 could reduce the transcription activity of miR-155, while poorly expressed miR-155 could increase the incidence of IA rupture by increasing the expression of MMP-2, especially in subjects carrying the TT genotype of SNP rs767649.
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Affiliation(s)
- Xiaobo Yang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Jianhua Peng
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Jinwei Pang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Weifeng Wan
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Ligang Chen
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
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23
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Yang X, Peng J, Pang J, Wan W, Zhong C, Peng T, Bao K, Jiang Y. The Association Between Serum Macrophage Migration Inhibitory Factor and Delayed Cerebral Ischemia After Aneurysmal Subarachnoid Hemorrhage. Neurotox Res 2019; 37:397-405. [PMID: 31267487 DOI: 10.1007/s12640-019-00072-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/27/2019] [Accepted: 06/07/2019] [Indexed: 01/09/2023]
Abstract
Inflammatory processes have long been implicated in the development of delayed cerebral ischemia (DCI) following aneurysmal subarachnoid hemorrhage (aSAH). Macrophage migration inhibitory factor (MIF) has been implicated in inflammation. The aim of this study was to assess whether serum levels of MIF at admission helps to predict which patients with aSAH would subsequently develop DCI. All patients with first-ever aSAH admitted between 2016 and 2017 were considered for inclusion in this prospective study. Primary study outcome was development of DCI at discharge. Serum levels of MIF, C-reactive protein (CRP), and interleukin-6 (IL-6) were tested at admission. The relation of serum levels of MIF at admission with DCI was assessed by the logistic regression models. In this study, 201 patients were included. A correlation between Hunt and Hess score and serum levels of MIF was found (r = 0.340; P < 0.001). Fifty-two of the 201 aSAH (25.9%) were defined as DCI, and the obtained MIF level in those patients was higher than in those patients without DCI [26.4 (IQR, 22.6-32.4) ng/ml vs. 20.4 (16.4-24.6) ng/ml; P < 0.001). As a continuous variable, MIF was associated with the risk of DCI. When serum level of MIF was elevated by each 1 ng/ml, the unadjusted risk of DCI was increased by 18% (OR = 1.18 [1.12-1.25], P < 0.001), while the adjusted risk was increased by 10% (1.10 [1.03-1.19], P = 0.001). With the area under the curve (AUC) of 0.780 (95% CI, 0.710-0.849), the MIF showed a great discriminatory ability for DCI than CRP (0.665, 0.582-0.748; P < 0.001) and IL-6 (0.721, 0.642-0.799; P = 0.001). Interestingly, the combined model (MIF/IL-6/CRP) improved the MIF to predict DCI (AUC of the combined model: 0.811; 95% CI, 0.751-0.871; P = 0.024). Furthermore, inclusion of MIF in the existing risk factors for the prediction of DCI enhanced the index and net reclassification improvement (NRI) (P < 0.001) and integrated discrimination improvement (IDI) (P = 0.005) values, confirming the effective reclassification and discrimination. The data showed that elevated MIF serum level accurately identifies patients at highest risk for developing DCI following aSAH.
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Affiliation(s)
- Xiaobo Yang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Jianhua Peng
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Jinwei Pang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Weifeng Wan
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Chuanhong Zhong
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Tangming Peng
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Kunyang Bao
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China
| | - Yong Jiang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, No 25. Taiping Street, Jiangyang District, Luzhou, 646000, Sichuan Province, China.
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24
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Wan W, Ding Y, Xie Z, Li Q, Yan F, Budbazar E, Pearce WJ, Hartman R, Obenaus A, Zhang JH, Jiang Y, Tang J. PDGFR-β modulates vascular smooth muscle cell phenotype via IRF-9/SIRT-1/NF-κB pathway in subarachnoid hemorrhage rats. J Cereb Blood Flow Metab 2019; 39:1369-1380. [PMID: 29480757 PMCID: PMC6668513 DOI: 10.1177/0271678x18760954] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Platelet-derived growth factor receptor-β (PDGFR-β) has been reported to promote phenotypic transformation of vascular smooth muscle cells (VSMCs). The purpose of this study was to investigate the role of the PDGFR-β/IRF9/SIRT-1/NF-κB pathway in VSMC phenotypic transformation after subarachnoid hemorrhage (SAH). SAH was induced using the endovascular perforation model in Sprague-Dawley rats. PDGFR-β small interfering RNA (siRNA) and IRF9 siRNA were injected intracerebroventricularly 48 h before SAH. SIRT1 activator (resveratrol) and inhibitor (EX527) were administered intraperitoneally 1 h after SAH induction. Twenty-four hours after SAH, the VSMC contractile phenotype marker α-smooth muscle actin (α-SMA) decreased, whereas the VSMC synthetic phenotype marker embryonic smooth muscle myosin heavy chain (Smemb) increased. Both PDGFR-β siRNA and IRF9 siRNA attenuated the induction of nuclear factor-κB (NF-κB) and enhanced the expression of α-SMA. The SIRT1 activator (resveratrol) preserved VSMC contractile phenotype, significantly alleviated neurological dysfunction, and reduced brain edema. However, these beneficial effects of PDGFR-β siRNA, IRF9 siRNA and resveratrol were abolished by the SIRT1 inhibitor (EX527). This study shows that PDGFR-β/IRF9/SIRT-1/NF-κB signaling played a role in the VSMC phenotypic transformation after SAH. Inhibition of this signaling cascade preserved the contractile phenotype of VSMCs, thereby improving neurological outcomes following SAH.
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Affiliation(s)
- Weifeng Wan
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA.,2 Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yan Ding
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Zongyi Xie
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Qian Li
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Feng Yan
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Enkhjargal Budbazar
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - William J Pearce
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Richard Hartman
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Andre Obenaus
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - John H Zhang
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Yong Jiang
- 2 Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Jiping Tang
- 1 Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, Loma Linda, CA, USA
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Bao F, Hu K, Wan W, Tian L, Jing HM. [Efficacy of anti-CD19 CAR-T cell therapy in 10 refractory recurrent B cell malignancies]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:454-459. [PMID: 30032559 PMCID: PMC7342922 DOI: 10.3760/cma.j.issn.0253-2727.2018.06.003] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
目的 探讨抗CD19 CAR-T细胞治疗难治复发B细胞肿瘤的疗效和不良反应。 方法 2015年12月至2017年7月北京大学第三医院血液科收治的10例患者,包括难治复发的急性B淋巴细胞白血病(B-ALL)6例,难治复发的B细胞非霍奇金淋巴瘤(NHL)4例,采用抗CD19 CAR-T细胞治疗后观察治疗效果及不良反应。 结果 输注后第28天进行近期疗效评估,其中6例ALL患者4例(66.7%)完全缓解(CR),1例(16.7%)部分缓解(PR);总反应率(ORR)为83.3%。3例弥漫大B细胞淋巴瘤(DLBCL)患者1例达CR。1例套细胞淋巴瘤(MCL)患者大部分病灶消失,亦有顽固病灶呈进展状态。10例患者均发生细胞因子释放综合征(CRS),主要表现为发热;其中1例患者出现中枢神经系统症状,1例患者出现多脏器功能衰竭,经治疗不良反应均治愈。 结论 抗CD19 CAR-T细胞治疗难治复发B细胞血液系统肿瘤有效,不良反应可控。
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Affiliation(s)
- F Bao
- Department of Hematology, Peking University Third Hospital, Beijing 100083, China
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Ivashko O, Horio M, Wan W, Christensen NB, McNally DE, Paris E, Tseng Y, Shaik NE, Rønnow HM, Wei HI, Adamo C, Lichtensteiger C, Gibert M, Beasley MR, Shen KM, Tomczak JM, Schmitt T, Chang J. Strain-engineering Mott-insulating La 2CuO 4. Nat Commun 2019; 10:786. [PMID: 30783084 PMCID: PMC6381167 DOI: 10.1038/s41467-019-08664-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 07/31/2018] [Accepted: 01/20/2019] [Indexed: 11/10/2022] Open
Abstract
The transition temperature Tc of unconventional superconductivity is often tunable. For a monolayer of FeSe, for example, the sweet spot is uniquely bound to titanium-oxide substrates. By contrast for La2-xSrxCuO4 thin films, such substrates are sub-optimal and the highest Tc is instead obtained using LaSrAlO4. An outstanding challenge is thus to understand the optimal conditions for superconductivity in thin films: which microscopic parameters drive the change in Tc and how can we tune them? Here we demonstrate, by a combination of x-ray absorption and resonant inelastic x-ray scattering spectroscopy, how the Coulomb and magnetic-exchange interaction of La2CuO4 thin films can be enhanced by compressive strain. Our experiments and theoretical calculations establish that the substrate producing the largest Tc under doping also generates the largest nearest neighbour hopping integral, Coulomb and magnetic-exchange interaction. We hence suggest optimising the parent Mott state as a strategy for enhancing the superconducting transition temperature in cuprates.
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Affiliation(s)
- O Ivashko
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland.
| | - M Horio
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
| | - W Wan
- Department of Physics, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| | - N B Christensen
- Department of Physics, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
| | - D E McNally
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - E Paris
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Y Tseng
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - N E Shaik
- Institute of Physics, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - H M Rønnow
- Institute of Physics, École Polytechnique Fedérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - H I Wei
- Department of Physics, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA
| | - C Adamo
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - C Lichtensteiger
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - M Gibert
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
| | - M R Beasley
- Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - K M Shen
- Department of Physics, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA
| | - J M Tomczak
- Institute of Solid State Physics, Vienna University of Technology, A-1040, Vienna, Austria
| | - T Schmitt
- Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - J Chang
- Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland
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Enkhjargal B, Malaguit J, Ho WM, Jiang W, Wan W, Wang G, Tang J, Zhang JH. Vitamin D attenuates cerebral artery remodeling through VDR/AMPK/eNOS dimer phosphorylation pathway after subarachnoid hemorrhage in rats. J Cereb Blood Flow Metab 2019; 39:272-284. [PMID: 28825325 PMCID: PMC6365598 DOI: 10.1177/0271678x17726287] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The role of vitamin D3 (VitD3) in the upregulation of osteopontin (OPN) and eNOS in the endothelium of cerebral arteries after subarachnoid hemorrhage (SAH) is investigated. The endovascular perforation SAH model in Sprague-Dawley rats ( n = 103) was used. The VitD3 pretreatment (30 ng/kg) increased endogenous OPN and eNOS expression in cerebral arteries compared with naïve rats ( n = 5 per group). Neurobehavioral scores were significantly improved in Pre-SAH+VitD3 group compared with the SAH group. The effects of VitD3 were attenuated by intracerebroventricular (i.c.v) injections of siRNA for the vitamin D receptor (VDR) and OPN in Pre-SAH+VitD3+VDR siRNA and Pre-SAH+VitD3+OPN siRNA rats, respectively ( n = 5 per group). The significant increase of VDR, OPN and decrease of C44 splicing in the cerebral arteries of Pre-SAH+VitD3 rats lead to an increase in basilar artery lumen. The increase in VDR expression led to an upregulation and phosphorylation of AMPK and eNOS, especially dimer form, in endothelium of cerebral artery. The results provide that VitD3 pretreatment attenuates cerebral artery remodeling and vasospasm through the upregulation of OPN and phosphorylation of AMPK (p-AMPK) and eNOS (p-eNOS) at Ser1177-Dimer in the cerebral arteries. Vitamin D may be a useful new preventive and therapeutic strategy against cerebral artery remodeling in stroke patients.
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Affiliation(s)
- Budbazar Enkhjargal
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jay Malaguit
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Wing M Ho
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Wu Jiang
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Weifeng Wan
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Gaiqing Wang
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jiping Tang
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - John H Zhang
- Departments of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
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Peng T, Huang C, Jiang Y, Wan W, Yang X, Liu A, Chen L, Zheng W. Is Single Low-Profile Visualized Intraluminal Support (LVIS)-Assisted Coiling of Wide-Necked Ruptured Multiple Intracranial Aneurysms in One Stage Feasible? World Neurosurg 2018; 118:e388-e394. [PMID: 30257294 DOI: 10.1016/j.wneu.2018.06.200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE There is no previous reports available on stent-assisted coiling of ruptured multiple intracranial aneurysms using single Low-Profile Visualized Intraluminal Support (LVIS) in one stage. In the present study, we investigated the efficacy and feasibility of using single LVIS to bridge multiple intracranial aneurysms in one stage. METHODS From April 2014 to August 2016, 24 patients treated with single LVIS to bridge 2 aneurysms in one stage were reviewed. The aneurysm morphology, clinical outcome, angiographic results, progressive occlusion, recurrence, and procedure-related complications were analyzed retrospectively. RESULTS In the present study, middle term clinical outcome showed that 9 patients were had a modified Rankin Scale (mRS) score of 0, 11 patients had mRS 1, and 4 patients had mRS 2. A total of 20 patients (83.3%) achieved a good outcome, 4 patients (16.7%) had poor outcomes, and 7 of 18 patients (38.9%) displayed improved clinical neurologic status in long-term follow-up. Immediate angiographic results postprocedure showed Raymond Scale (RS) I in 33 aneurysms (68.8%), RS II in 11 aneurysms (22.9%), and RS III in 4 aneurysms (8.3%). The angiographic follow-up results showed RS I in 41 aneurysms (85.4%), RS II in 5 aneurysms (10.4%), and RS III in 2 aneurysms (4.2%). Of 15 incomplete occlusion aneurysms postprocedure, 10 aneurysms (66.7%) achieved to progressed occlusion on follow-up imaging, and no recanalization or mortality occurred in this group. CONCLUSIONS Single LVIS bridging wide-neck ruptured multiple intracranial aneurysms was effective and feasible in one stage. However, the procedure-related complications should be emphasized and long-term follow-up requires further evaluation.
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Affiliation(s)
- Tangming Peng
- Faculty of Health Sciences, University of Macau, Macau, China; Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China
| | - Changren Huang
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China
| | - Yong Jiang
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China
| | - Weifeng Wan
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China
| | - Xiaobo Yang
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China
| | - Aihua Liu
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; Beijing Neurosurgical Institute, Beijing, China
| | - Ligang Chen
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Sichuan Sheng, China.
| | - Wenhua Zheng
- Faculty of Health Sciences, University of Macau, Macau, China.
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Wang J, Li Y, Huang Z, Wan W, Zhang Y, Wang C, Cheng X, Ye F, Liu K, Fei G, Zeng M, Jin L. Neuromelanin-sensitive magnetic resonance imaging features of the substantia nigra and locus coeruleus in de novo
Parkinson's disease and its phenotypes. Eur J Neurol 2018. [PMID: 29520900 DOI: 10.1111/ene.13628] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- J. Wang
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - Y. Li
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - Z. Huang
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - W. Wan
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - Y. Zhang
- MR Research; GE Healthcare; Shanghai China
| | - C. Wang
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - X. Cheng
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - F. Ye
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - K. Liu
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - G. Fei
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
| | - M. Zeng
- Department of Radiology; Zhongshan Hospital; Fudan University; Shanghai China
- Shanghai Medical Imaging Institute; Shanghai China
| | - L. Jin
- Department of Neurology; Zhongshan Hospital; Fudan University; Shanghai China
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Scholl A, Marcus MA, Doran A, Nasiatka JR, Young AT, MacDowell AA, Streubel R, Kent N, Feng J, Wan W, Padmore HA. Hartmann characterization of the PEEM-3 aberration-corrected X-ray photoemission electron microscope. Ultramicroscopy 2018; 188:77-84. [PMID: 29554489 DOI: 10.1016/j.ultramic.2018.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/06/2018] [Accepted: 03/09/2018] [Indexed: 11/24/2022]
Abstract
Aberration correction by an electron mirror dramatically improves the spatial resolution and transmission of photoemission electron microscopes. We will review the performance of the recently installed aberration corrector of the X-ray Photoemission Electron Microscope PEEM-3 and show a large improvement in the efficiency of the electron optics. Hartmann testing is introduced as a quantitative method to measure the geometrical aberrations of a cathode lens electron microscope. We find that aberration correction leads to an order of magnitude reduction of the spherical aberrations, suggesting that a spatial resolution of below 100 nm is possible at 100% transmission of the optics when using x-rays. We demonstrate this improved performance by imaging test patterns employing element and magnetic contrast.
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Affiliation(s)
- A Scholl
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA.
| | - M A Marcus
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A Doran
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - J R Nasiatka
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A T Young
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - A A MacDowell
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - R Streubel
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - N Kent
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA; Department of Physics, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - J Feng
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - W Wan
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
| | - H A Padmore
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley CA 94720, USA
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Xie Z, Huang L, Enkhjargal B, Reis C, Wan W, Tang J, Cheng Y, Zhang JH. Recombinant Netrin-1 binding UNC5B receptor attenuates neuroinflammation and brain injury via PPARγ/NFκB signaling pathway after subarachnoid hemorrhage in rats. Brain Behav Immun 2018; 69:190-202. [PMID: 29162556 PMCID: PMC5894358 DOI: 10.1016/j.bbi.2017.11.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [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: 08/19/2017] [Revised: 11/09/2017] [Accepted: 11/16/2017] [Indexed: 12/16/2022] Open
Abstract
Neuroinflammation is an essential mechanism involved in the pathogenesis of subarachnoid hemorrhage (SAH)-induced brain injury. Recently, Netrin-1 (NTN-1) is well established to exert anti-inflammatory property in non-nervous system diseases through inhibiting infiltration of neutrophil. The present study was designed to investigate the effects of NTN-1 on neuroinflammation, and the potential mechanism in a rat model of SAH. Two hundred and ninety-four male Sprague Dawley rats (weight 280-330 g) were subjected to the endovascular perforation model of SAH. Recombinant human NTN-1 (rh-NTN-1) was administered intravenously. Small interfering RNA (siRNA) of NTN-1 and UNC5B, and a selective PPARγ antagonist bisphenol A diglycidyl ether (BADGE) were applied. Post-SAH evaluations included neurobehavioral function, brain water content, Western blot analysis, and immunohistochemistry. Our results showed that endogenous NTN-1 and its receptor UNC5B level were increased after SAH. Administration of rh-NTN-1 reduced brain edema, ameliorated neurological impairments, and suppressed microglia activation after SAH, which were concomitant with PPARγ activation, inhibition of NFκB, and decrease in TNF-α, IL-6, and ICAM-1, as well as myeloperoxidase (MPO). Knockdown of endogenous NTN-1 increased expression of pro-inflammatory mediators and MPO, and aggravated neuroinflammation and brain edema. Moreover, knockdown of UNC5B using specific siRNA and inhibition of PPARγ with BADGE blocked the protective effects of rh-NTN-1. In conclusion, our findings indicated that exogenous rh-NTN-1 treatment attenuated neuroinflammation and neurological impairments through inhibiting microglia activation after SAH in rats, which is possibly mediated by UNC5B/PPARγ/NFκB signaling pathway. Exogenous NTN-1 may be a novel therapeutic agent to ameliorating early brain injury via its anti-inflammation effect.
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Affiliation(s)
- Zongyi Xie
- Department of Neurosurgery, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China,Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA,Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Cesar Reis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Weifeng Wan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China.
| | - John H. Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA,Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA, 92354, USA,Corresponding author: John H. Zhang, MD, PhD, Departments of Anesthesiology, Physiology and Pharmacology and Neurosurgery, Loma Linda University School of Medicine, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354, USA. Tel: 909-558-4723; Fax: 909-558-0119; , Yuan Cheng, MD, Department of Neurosurgery, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, China. Tel: +8623-63693539; Fax: +8623-63693871;
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Li Q, Ding Y, Krafft P, Wan W, Yan F, Wu G, Zhang Y, Zhan Q, Zhang JH. Targeting Germinal Matrix Hemorrhage-Induced Overexpression of Sodium-Coupled Bicarbonate Exchanger Reduces Posthemorrhagic Hydrocephalus Formation in Neonatal Rats. J Am Heart Assoc 2018; 7:e007192. [PMID: 29386206 PMCID: PMC5850237 DOI: 10.1161/jaha.117.007192] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 11/21/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND Germinal matrix hemorrhage (GMH) is a leading cause of mortality and lifelong morbidity in preterm infants. Posthemorrhagic hydrocephalus (PHH) is a common complication of GMH. A sodium-coupled bicarbonate exchanger (NCBE) encoded by solute carrier family 4 member 10 gene is expressed on the choroid plexus basolateral membrane and may play a role in cerebrospinal fluid production and the development of PHH. Following GMH, iron degraded from hemoglobin has been linked to PHH. Choroid plexus epithelial cells also contain iron-responsive element-binding proteins (IRPs), IRP1, and IRP2 that bind to mRNA iron-responsive elements. The present study aims to resolve the following issues: (1) whether the expression of NCBE is regulated by IRPs; (2) whether NCBE regulates the formation of GMH-induced hydrocephalus; and (3) whether inhibition of NCBE reduces PHH development. METHODS AND RESULTS GMH model was established in P7 rat pups by injecting bacterial collagenase into the right ganglionic eminence. Another group received iron trichloride injections instead of collagenase. Deferoxamine was administered intraperitoneally for 3 consecutive days after GMH/iron trichloride. Solute carrier family 4 member 10 small interfering RNA or scrambled small interfering RNA was administered by intracerebroventricular injection 24 hours before GMH and followed with an injection every 7 days over 21 days. NCBE expression increased while IRP2 expression decreased after GMH/iron trichloride. Deferoxamine ameliorated both the GMH-induced and iron trichloride-induced decrease of IRP2 and decreased NCBE expressions. Deferoxamine and solute carrier family 4 member 10 small interfering RNA improved cognitive and motor functions at 21 to 28 days post GMH and reduced cerebrospinal fluid production as well as the degree of hydrocephalus at 28 days after GMH. CONCLUSIONS Targeting iron-induced overexpression of NCBE may be a translatable therapeutic strategy for the treatment of PHH following GMH.
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Affiliation(s)
- Qian Li
- Department of Neurology, The Fifth People's Hospital of Chongqing, Chongqing, China
| | - Yan Ding
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Paul Krafft
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Weifeng Wan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Feng Yan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Guangyong Wu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Yixin Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Qunling Zhan
- Department of Neurology, The Fifth People's Hospital of Chongqing, Chongqing, China
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA
- Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA
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Abstract
This review presents various TEM techniques including electron diffraction, high-resolution TEM and scanning TEM imaging, and electron tomography and their applications for structure characterization of zeolite materials.
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Affiliation(s)
- W. Wan
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - J. Su
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - X. D. Zou
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - T. Willhammar
- Inorganic and Structural Chemistry
- Department of Materials and Environmental Chemistry
- Stockholm University
- SE-106 91 Stockholm
- Sweden
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Li K, Xu C, Huang J, Liu W, Zhang L, Wan W, Tao H, Li L, Lin S, Harrison A, He H. Prediction and identification of the effectors of heterotrimeric G proteins in rice (Oryza sativa L.). Brief Bioinform 2017; 18:270-278. [PMID: 26970777 DOI: 10.1093/bib/bbw021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 11/14/2022] Open
Abstract
Heterotrimeric G protein signaling cascades are one of the primary metazoan sensing mechanisms linking a cell to environment. However, the number of experimentally identified effectors of G protein in plant is limited. We have therefore studied which tools are best suited for predicting G protein effectors in rice. Here, we compared the predicting performance of four classifiers with eight different encoding schemes on the effectors of G proteins by using 10-fold cross-validation. Four methods were evaluated: random forest, naive Bayes, K-nearest neighbors and support vector machine. We applied these methods to experimentally identified effectors of G proteins and randomly selected non-effector proteins, and tested their sensitivity and specificity. The result showed that random forest classifier with composition of K-spaced amino acid pairs and composition of motif or domain (CKSAAP_PROSITE_200) combination method yielded the best performance, with accuracy and the Mathew's correlation coefficient reaching 74.62% and 0.49, respectively. We have developed G-Effector, an online predictor, which outperforms BLAST, PSI-BLAST and HMMER on predicting the effectors of G proteins. This provided valuable guidance for the researchers to select classifiers combined with different feature selection encoding schemes. We used G-Effector to screen the effectors of G protein in rice, and confirmed the candidate effectors by gene co-expression data. Interestingly, one of the top 15 candidates, which did not appear in the training data set, was validated in a previous research work. Therefore, the candidate effectors list in this article provides both a clue for researchers as to their function and a framework of validation for future experimental work. It is accessible at http://bioinformatics.fafu.edu.cn/geffector.
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Affiliation(s)
- Kuan Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China
| | - Chaoqun Xu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jian Huang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wei Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, China; State Key Laboratory of Microbial Metabolism, School of Life Science & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, China; Huzhou Center of Bio-Synthetic Innovation, 1366 Hongfeng Road, Huzhou, China
| | - Lina Zhang
- Department of Biology, University of California at San Diego, La Jolla, California, USA
| | - Weifeng Wan
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Huan Tao
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Ling Li
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Maize Research Institute of Sichuan Agricultural University, Chengdu, Sichuan Province, China
| | - Shoukai Lin
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Andrew Harrison
- Department of Mathematical Sciences, University of Essex, Wivenhoe Park, Colchester, UK
| | - Huaqin He
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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Clabbers MTB, van Genderen E, Wan W, Wiegers EL, Gruene T, Abrahams JP. Protein structure determination by electron diffraction using a single three-dimensional nanocrystal. Acta Crystallogr D Struct Biol 2017; 73:738-748. [PMID: 28876237 PMCID: PMC5586247 DOI: 10.1107/s2059798317010348] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 07/12/2017] [Indexed: 11/11/2022] Open
Abstract
Three-dimensional nanometre-sized crystals of macromolecules currently resist structure elucidation by single-crystal X-ray crystallography. Here, a single nanocrystal with a diffracting volume of only 0.14 µm3, i.e. no more than 6 × 105 unit cells, provided sufficient information to determine the structure of a rare dimeric polymorph of hen egg-white lysozyme by electron crystallography. This is at least an order of magnitude smaller than was previously possible. The molecular-replacement solution, based on a monomeric polyalanine model, provided sufficient phasing power to show side-chain density, and automated model building was used to reconstruct the side chains. Diffraction data were acquired using the rotation method with parallel beam diffraction on a Titan Krios transmission electron microscope equipped with a novel in-house-designed 1024 × 1024 pixel Timepix hybrid pixel detector for low-dose diffraction data collection. Favourable detector characteristics include the ability to accurately discriminate single high-energy electrons from X-rays and count them, fast readout to finely sample reciprocal space and a high dynamic range. This work, together with other recent milestones, suggests that electron crystallography can provide an attractive alternative in determining biological structures.
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Affiliation(s)
- M. T. B. Clabbers
- Center for Cellular Imaging and NanoAnalytics (C-CINA), Biozentrum, Basel University, Mattenstrasse 26, CH-4058 Basel, Switzerland
| | - E. van Genderen
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
| | - W. Wan
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - E. L. Wiegers
- Leiden Institute of Physics, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
| | - T. Gruene
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
| | - J. P. Abrahams
- Center for Cellular Imaging and NanoAnalytics (C-CINA), Biozentrum, Basel University, Mattenstrasse 26, CH-4058 Basel, Switzerland
- Department of Biology and Chemistry, Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland
- Leiden Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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Yang P, Jing HM, Zhao W, Hu K, Dong F, Li QH, Wan W, Tian L, Wang JJ, Ke XY. [Analysis of survival and treatment outcome of young patients with high-risk diffuse large B cell lymphoma]. Zhonghua Yi Xue Za Zhi 2017; 97:2485-2490. [PMID: 28835053 DOI: 10.3760/cma.j.issn.0376-2491.2017.32.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze clinical feature and treatment outcome of young patients with high-risk diffuse large B cell lymphoma. Methods: A total of 122 young patients with high-risk diffuse large B cell lymphoma who were treated in Third Hospital of Peking University during the period from January 2000 to April 2015 were retrospectively analyzed, and the clinical features, laboratory data were included in Kaplan-Meier and prognostic analysis. Results: In our center, the incidence of young high-risk DLBCL was 27.1% in all DLBCL patients, median age was 44.0 years, 99.2% patients belong to Ⅲ and Ⅳstage, 50% patients had more than two extranodal organs involvement, and the higher proliferation index(Ki-67≥80%) was present in 63.1% of patients, Immunohistochemistry showed that 36.7% patients in 30 cases were double-expressed DLBCL. The overall response rate(ORR) for the whole group was 79.4%, the complete response rate was 39.7% , the 3, 5-year progression free survival rate was 59.8% and 57.0%, the 3, 5-year overall survival rate was 63.5% and 57.8%, respectively. 44.3% patients were refractory-relapsed DLBCL. Rituximab can improve the survival of patients and 3-year overall survival rate was 75.2% vs 46.1%(P=0.001). High-dose chemotherapy was superior to CHOP regimen which 3-year overall survival rate was 84.6% vs 54.1%(P=0.006). Compared with chemotherapy group , auto-hematopoietic stem cell transplantation can improve prognosis of patients and 3-year overall survival rate was 93.4% vs 48.3%(P<0.001). The level of Ki-67, B symptom, ECOG score, the level of LDH, WBC and albumin, ESR level, anemia, rituximab therapy, initial regimens, ASCT, initial treatment outcome and refractory-relapsed were predictive of overall survival. Multivariate analysis indicated that albumin level(RR=5.462, P=0.019), initial treatment outcome(RR=34.863, P<0.001) and refractory-relapsed (RR=24.374, P<0.001)were independent prognostic risk factors. Conclusions: Young patients with high-risk DLBCL were highly aggressive in clinical and pathological features . Rituximab and high-dose regimens can improve the survival of patients.
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Affiliation(s)
- P Yang
- Department of Hematology, Third Hospital of Peking University, Beijing 100191, China
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Yan F, Tan X, Wan W, Dixon BJ, Fan R, Enkhjargal B, Li Q, Zhang J, Chen G, Zhang JH. ErbB4 protects against neuronal apoptosis via activation of YAP/PIK3CB signaling pathway in a rat model of subarachnoid hemorrhage. Exp Neurol 2017; 297:92-100. [PMID: 28756200 DOI: 10.1016/j.expneurol.2017.07.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/17/2017] [Accepted: 07/25/2017] [Indexed: 12/21/2022]
Abstract
Neuronal apoptosis is a central pathological process in subarachnoid hemorrhage (SAH)-induced early brain injury. Previous studies indicated that ErbB4 (EGFR family member v-erb-b2 avian erythroblastic leukemia viral oncogene homolog 4) is essential for normal development and maintenance of the nervous system. In this study, we explored the neuroprotective effects of ErbB4 and its downstream YAP (yes-associated protein)/PIK3CB signaling pathway in early brain injury after SAH in a rat model using the endovascular perforation method. Rats were neurologically evaluated with the Modified Garcia Scale and beam balance test at 24h and 72h after SAH. An ErbB4 activator Neuregulin 1β1 (Nrg 1β1), ErbB4 siRNA and YAP siRNA were used to explore this pathway. The expression of p-ErbB4 and YAP was significantly increased after SAH. Multiple immunofluorescence labeling experiments demonstrated that ErbB4 is mainly expressed in neurons. Activation of ErbB4 and its downstream signals improved the neurological deficits after SAH and significantly reduced neuronal cell death. Inhibition of ErbB4 reduced YAP and PIK3CB expression, and aggravated cell apoptosis. YAP knockdown reduced the PIK3CB level and eliminated the anti-apoptotic effects of ErbB4 activation. These findings indicated that ErbB4 plays a neuroprotective role in early brain injury after SAH, possibly via the YAP/PIK3CB signaling pathway.
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Affiliation(s)
- Feng Yan
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA; Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Xiaoxiao Tan
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Weifeng Wan
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA
| | - Brandon J Dixon
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA
| | - Ruiming Fan
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA
| | - Qian Li
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA
| | - Jianmin Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Gao Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University, School of Medicine, CA, USA.
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Xie Z, Enkhjargal B, Reis C, Huang L, Wan W, Tang J, Cheng Y, Zhang JH. Netrin-1 Preserves Blood-Brain Barrier Integrity Through Deleted in Colorectal Cancer/Focal Adhesion Kinase/RhoA Signaling Pathway Following Subarachnoid Hemorrhage in Rats. J Am Heart Assoc 2017; 6:JAHA.116.005198. [PMID: 28526701 PMCID: PMC5524080 DOI: 10.1161/jaha.116.005198] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Netrin-1 (NTN-1) has been established to be a novel intrinsic regulator of blood-brain barrier (BBB) maintenance. This study was carried out to investigate the potential roles of exogenous NTN-1 in preserving BBB integrity after experimental subarachnoid hemorrhage (SAH) as well as the underlying mechanisms of its protective effects. METHODS AND RESULTS A total of 309 male Sprague-Dawley rats were subjected to an endovascular perforation model of SAH. Recombinant NTN-1 was administered intravenously 1 hour after SAH induction. NTN-1 small interfering RNA or Deleted in Colorectal Cancer small interfering RNA was administered intracerebroventricular at 48 hours before SAH. Focal adhesion kinase inhibitor was administered by intraperitoneal injection at 1 hour prior to SAH. Neurological scores, brain water content, BBB permeability, RhoA activity, Western blot, and immunofluorescence staining were evaluated. The expression of endogenous NTN-1 and its receptor Deleted in Colorectal Cancer were increased after SAH. Administration of exogenous NTN-1 significantly reduced brain water content and BBB permeability and ameliorated neurological deficits at 24 and 72 hours after SAH. Exogenous NTN-1 treatment significantly promoted phosphorylated focal adhesion kinase activation and inhibited RhoA activity, as well as upregulated the expression of ZO-1 and Occludin. Conversely, depletion of endogenous NTN-1 aggravated BBB breakdown and neurological impairments at 24 hours after SAH. The protective effects of NTN-1 at 24 hours after SAH were also abolished by pretreatment with Deleted in Colorectal Cancer small interfering RNA and focal adhesion kinase inhibitor. CONCLUSIONS NTN-1 treatment preserved BBB integrity and improved neurological functions through a Deleted in Colorectal Cancer/focal adhesion kinase/RhoA signaling pathway after SAH. Thus, NTN-1 may serve as a promising treatment to alleviate early brain injury following SAH.
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Affiliation(s)
- Zongyi Xie
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Cesar Reis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Weifeng Wan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA .,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA.,Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA
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39
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Xie Z, Huang L, Enkhjargal B, Reis C, Wan W, Tang J, Cheng Y, Zhang JH. Intranasal administration of recombinant Netrin-1 attenuates neuronal apoptosis by activating DCC/APPL-1/AKT signaling pathway after subarachnoid hemorrhage in rats. Neuropharmacology 2017; 119:123-133. [PMID: 28347836 DOI: 10.1016/j.neuropharm.2017.03.025] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/20/2017] [Accepted: 03/23/2017] [Indexed: 01/16/2023]
Abstract
Neuronal apoptosis is a crucial pathological process in early brain injury after subarachnoid hemorrhage (SAH). The effective therapeutic strategies to ameliorate neuronal apoptosis are still absent. We intended to determine whether intranasal administration of exogenous Netrin-1 (NTN-1) could attenuate neuronal apoptosis after experimental SAH, specifically via activating DCC-dependent APPL-1/AKT signaling cascade. Two hundred twenty-five male Sprague-Dawley rats were subjected to the endovascular perforation model of SAH. Recombinant human NTN-1 (rNTN-1) was administered intranasally. NTN-1 small interfering RNA (siRNA), APPL-1 siRNA, and AKT inhibitor MK2206 were administered through intracerebroventricular (i.c.v.) injection. SAH grade, neurological score, neuronal apoptosis assessed by cleaved caspase-3 (CC-3) expression and Fluoro-Jade C (FJC) staining, double immunofluorescence staining, and Western blot were examined. Our results revealed that endogenous NTN-1 level was increased after SAH. Administration of rNTN-1 improved neurological outcomes at 24 h and 72 h after SAH, while knockdown of endogenous NTN-1 worsened neurological impairments. Furthermore, exogenous rNTN-1 treatment promoted APPL-1 activation, increased phosphorylated-AKT and Bcl-2 expression, as well as decreased apoptotic marker CC-3 expression and the number of FJC-positive neurons, thereby alleviated neuronal apoptosis. Conversely, APPL-1 siRNA and MK2206 abolished the anti-apoptotic effect of exogenous rNTN-1 at 24 h after SAH. Collectively, intranasal administration of exogenous rNTN-1 attenuated neuronal apoptosis and improved neurological function in SAH rats, at least in apart via activating DCC/APPL-1/AKT signaling pathway.
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Affiliation(s)
- Zongyi Xie
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China; Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Lei Huang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Budbazar Enkhjargal
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Cesar Reis
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Weifeng Wan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Jiping Tang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States; Department of Neurosurgery, School of Medicine, Loma Linda University, Loma Linda, CA 92354, United States.
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Bear HD, Wan W, Robidoux A, Rubin P, Limentani S, White RL, Granfortuna J, Hopkins JO, Oldham D, Rodriguez A, Sing AP. Abstract P2-10-04: Using the 21-gene assay from core needle biopsies to choose neoadjuvant therapy for breast cancer: A multi-center trial. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-10-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Neoadjuvant systemic therapy (NST) can facilitate breast conserving surgery (BCS) for large cancers. While hormone receptor positive (HR+) cancers respond to neoadjuvant chemotherapy (NCT), pathologic complete responses (pCR) are unlikely. Neoadjuvant hormonal therapy (NHT) may make BCS possible with less toxicity than NCT. We hypothesized that the Oncotype Dx® 21-gene Recurrence Score (RS), could guide the decision to treat with NHT versus NCT to facilitate BCS. This hypothesis is based on the ability of the RS to identify ER+ patients (pts) likely to benefit from adjuvant CT vs unlikely to benefit, as well as prior studies showing that pts with a low RS have no pCRs when receiving NCT (Yardley, et al 2015).
Methods: This prospective multi-center study enrolled pts with HR+, HER2-negative, invasive breast cancers not suitable for BCS (size ≥ 2 cm). Diagnosis was made by core needle biopsy (bx). Tissue blocks from the bx's were sent to Genomic Health for RS testing. Pts whose tumors had a RS < 11 were to receive NHT; pts with RS >25 tumors were to receive NCT; pts with midrange RS of 11-25 were randomized to NHT or NCT.
The primary objective was the feasibility of randomizing pts with RS values 11-25 between NHT and NCT. The primary endpoint was whether 1/3 or more of randomized pts would refuse assigned treatment. Secondary endpoints included: clinical partial and complete response (cPR, cCR) rates, overall clinical response rates (CR), pCR in the breast, pCR in the breast and nodes and successful BCS. One-sample binomial test was used to compare the observed refusal rate with 1/3, along with its 95% CI. Fisher's exact test, logistic regression (for a binary endpoint), and/or ordinal regression (for an ordinal endpoint) were used to compare the 4 treatment groups for secondary endpoints.
Results: Seven US and Canadian centers enrolled 64 pts; 5 were excluded (1 delay in RS result, 1 lost block, 1 HR testing discrepancy, 2 not eligible). Of 33 pts with RS 11-25, 5 (15%; 95% CI =2.9% - 27.4%) refused assignment to NCT (2 chose NHT and finished the study). This was significantly lower than the 33% target (binomial test, p=0.0292). Results for other endpoints are shown in the Table (according to treatment received); the total number of pts for the analyses is 55; 1 pt had missing data for clinical response.
Results According to TreatmentTreatment GroupRS<11 NHTRS 11-25 NHTRS 11-25 NCTRS>25 NCTOverall PNN=12N=18N=11N=14 cCR8.3%22.2%36.4%28.6%0.0422cPR75%27.8%36.4%64.3% CR (cCR + cPR)83.3%50%72.7%92.9%0.0490pCR Breast8.3%6%021.4%NSpCR Breast + Nodes00014.3%NSSuccessful BCS75%72.2%63.6%57.1%NS
Conclusions:This pilot showed the feasibility of using the RS to guide NST, with only a 15% refusal rate of randomly assigned treatment. Of greater interest is the finding that pts with a RS <11 had a high CR rate with NHT and that pts with a RS 11-25 who received NHT had a similar rate of BCS success as the pts with RS <11. Conversely, pts with RS>25 treated with NCT had the highest CR (cCR + pCR) and pCR rates. These results demonstrate that conducting a similarly designed larger trial is feasible and suggests that for pts with a low RS, NHT is a potentially effective strategy.
Citation Format: Bear HD, Wan W, Robidoux A, Rubin P, Limentani S, White, Jr. RL, Granfortuna J, Hopkins JO, Oldham D, Rodriguez A, Sing AP. Using the 21-gene assay from core needle biopsies to choose neoadjuvant therapy for breast cancer: A multi-center trial [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-10-04.
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Affiliation(s)
- HD Bear
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - W Wan
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - A Robidoux
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - P Rubin
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - S Limentani
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - RL White
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - J Granfortuna
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - JO Hopkins
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - D Oldham
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - A Rodriguez
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
| | - AP Sing
- Virginia Commonwealth University, Massey Cancer Center, Richmond, VA; Centre Hospitalier de l'Universite de Montreal, Montreal, QC, Canada; Cone Health Cancer Center, Greensboro, NC; Carolinas Medical Center, Charlotte, NC; Forsyth Regional Cancer Center, Winston-Salem, NC; Lynchburg Hematology Oncology Clinic, Lynchburg, VA; Methodist Hospital, Houston, TX; Genomic Health, Inc, Redwood City, CA
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Abstract
In addition to its roles in embryonic development, Growth and Differentiation Factor 11 (GDF 11) has recently drawn much interest about its roles in other processes, such as aging. GDF 11 has been shown to play pivotal roles in the rescue of the proliferative and regenerative capabilities of skeletal muscle, neural stem cells and cardiomyocytes. We would be remiss not to point that some controversy exists regarding the role of GDF 11 in biological processes and whether it will serve as a therapeutic agent. The latest studies have shown that the level of circulating GDF 11 correlates with the outcomes of patients with cardiovascular diseases, cancer and uremia. Based on these studies, GDF 11 is a promising candidate to serve as a novel biomarker of diseases. This brief review gives a detailed and concise view of the regulation and functions of GDF 11 and its roles in development, neurogenesis and erythropoiesis as well as the prospect of using this protein as an indicator of cardiac health and aging.
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Affiliation(s)
- A Jamaiyar
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA; School of Biomedical Sciences, Kent State University, Kent, OH, USA
| | - W Wan
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA; Department of Cardiology, Renmin Hospital of Wuhan University, Hubei, China
| | - D M Janota
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - M K Enrick
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - W M Chilian
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA
| | - L Yin
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH, USA.
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Abstract
Development of advanced analytical techniques is essential for the identification of water oxidation catalysts together with mechanistic studies.
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Affiliation(s)
- J. Li
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - R. Güttinger
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - R. Moré
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - F. Song
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
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Anderson J, Wan W, Kaplan B, Myers J, Fields E. Changing Paradigm in Pancreatic Cancer: From Adjuvant to Neoadjuvant Chemoradiation. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nabavizadeh R, Abbassi M, Wan W, Grob B, Fields E. Underuse and Potential Detrimental Effect of Radiation Therapy in the Management of Ureteral Carcinoma. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1289] [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]
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Abstract
Cryo-electron tomography (cryo-ET) allows 3D volumes to be reconstructed from a set of 2D projection images of a tilted biological sample. It allows densities to be resolved in 3D that would otherwise overlap in 2D projection images. Cryo-ET can be applied to resolve structural features in complex native environments, such as within the cell. Analogous to single-particle reconstruction in cryo-electron microscopy, structures present in multiple copies within tomograms can be extracted, aligned, and averaged, thus increasing the signal-to-noise ratio and resolution. This reconstruction approach, termed subtomogram averaging, can be used to determine protein structures in situ. It can also be applied to facilitate more conventional 2D image analysis approaches. In this chapter, we provide an introduction to cryo-ET and subtomogram averaging. We describe the overall workflow, including tomographic data collection, preprocessing, tomogram reconstruction, subtomogram alignment and averaging, classification, and postprocessing. We consider theoretical issues and practical considerations for each step in the workflow, along with descriptions of recent methodological advances and remaining limitations.
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Affiliation(s)
- W Wan
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - J A G Briggs
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
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Yi R, Liu H, Yi D, Wan W, Wang B, Jiang Y, Yang Q, Wang D, Gao Q, Xu Y, Tang Q. Precipitation hardening and microstructure evolution of the Ti–7Nb–10Mo alloy during aging. Materials Science and Engineering: C 2016; 63:577-86. [DOI: 10.1016/j.msec.2016.03.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Revised: 02/25/2016] [Accepted: 03/10/2016] [Indexed: 11/17/2022]
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Wan W, Hawkins C, Hemingway J, Hughes D, Duszak R. Enteral access: evolving roles of radiologists and other providers nationally over two decades. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Yan LL, Wan W, Chen L, Zhou F, Gong SJ, Tong X, Feng M. Exploring structural phase transitions of ion crystals. Sci Rep 2016; 6:21547. [PMID: 26865229 PMCID: PMC4749997 DOI: 10.1038/srep21547] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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: 11/10/2015] [Accepted: 01/27/2016] [Indexed: 11/09/2022] Open
Abstract
Phase transitions have been a research focus in many-body physics over past decades. Cold ions, under strong Coulomb repulsion, provide a repealing paradigm of exploring phase transitions in stable confinement by electromagnetic field. We demonstrate various conformations of up to sixteen laser-cooled (40)Ca(+) ion crystals in a home-built surface-electrode trap, where besides the usually mentioned structural phase transition from the linear to the zigzag, two additional phase transitions to more complicated two-dimensional configurations are identified. The experimental observation agrees well with the numerical simulation. Heating due to micromotion of the ions is analysed by comparison of the numerical simulation with the experimental observation. Our investigation implies very rich and complicated many-body behaviour in the trapped-ion systems and provides effective mechanism for further exploring quantum phase transitions and quantum information processing with ultracold trapped ions.
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Affiliation(s)
- L. L. Yan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - W. Wan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - L. Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - F. Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - S. J. Gong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - X. Tong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - M. Feng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
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Wan W. 506P Simulation modeling of lung cancer screening cost-effectiveness analysis. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv535.01] [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: 11/14/2022] Open
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Kim JY, Kim JW, Wan W. Design of in-flight fragment separator using high-power primary beams in the energy of a few hundred MeV/u. Rev Sci Instrum 2015; 86:073302. [PMID: 26233367 DOI: 10.1063/1.4923284] [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] [Indexed: 06/04/2023]
Abstract
An in-flight fragment separator usually requires large acceptance and high momentum resolution to minimize the loss of a rare isotope beam of interest produced at a thin target, which is especially important when (238)U fission reactions in the energy of 200 MeV/u are used. The production target and beam dump are located in the pre-separator, where a beam power of up to 400 kW is dissipated. The area is surrounded by thick radiation shielding walls, which result in long drift spaces between adjacent magnetic components at various locations and an asymmetrical layout. Efforts have been made to minimize non-linear effects in the pre-separator beam optics with trials of different separator configurations and correction schemes using COSY Infinity and GICOSY. The main separator is configured to be mirror symmetric such that correction with hexapole and octupole coils can be more readily applied. The separator configuration was finalized to allow the facility design to proceed and the key components including superconducting magnets have been designed and prototyped. In addition, the separator design has been evaluated using LISE++ including a set of wedge degraders at dispersive focal planes to improve the yield and purity of selected isotope beam.
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Affiliation(s)
- J Y Kim
- Institute for Basic Science, Yuseong, Daejeon 305-811, South Korea
| | - J W Kim
- Institute for Basic Science, Yuseong, Daejeon 305-811, South Korea
| | - W Wan
- Lawrence Berkeley Laboratory, Berkeley, California 94720, USA
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