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He J, Wang JR, Gan WJ, Li GQ, Xin Q, Lin ZP, Ruan SB, Chen XD. [Analysis of the types and functions of CD34 + cells in full-thickness skin defect wounds of normal mice and diabetic mice by single-cell RNA sequencing]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:230-239. [PMID: 38548393 DOI: 10.3760/cma.j.cn501225-20231130-00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Objective: To analyze the types and functions of CD34+ cells in full-thickness skin defect wounds of normal mice and diabetic mice by single-cell RNA sequencing. Methods: This study was an experimental study. The CD34+ cell lineage tracing mouse was produced, and the visualization of CD34+ cells under the fluorescent condition was realized. Six male CD34+ cell lineage tracing mice aged 7-8 weeks (designated as diabetic group) were intraperitoneally injected with streptozotocin to establish a diabetic model, and full-thickness skin defect wounds were prepared on their backs when they reached 13 weeks old. Another 6 male CD34+ cell lineage tracing mice aged 13 weeks (designated as control group) were also subjected to full-thickness skin defect wounds on their backs. On post-injury day (PID) 4, wound tissue was collected from 3 mice in control group and 2 mice in diabetic group, and digested to prepare single-cell suspensions. CD34+ cells were screened using fluorescence-activated cell sorting, followed by single-cell RNA sequencing. The Seurat 4.0.2 program in the R programming language was utilized for dimensionality reduction, visualization, and cell clustering analysis of CD34+ cell types, and to screen and annotate the marker genes for each CD34+ cell subpopulation. Kyoto encyclopedia of genes and genomes (KEGG) and gene ontology (GO) enrichment analysis was performed to analyze the differentially expressed genes (DEGs) of CD34+ fibroblasts (Fbs), smooth muscle cells (SMCs), keratinocytes (KCs), and chondrocyte-like cells (CLCs) in the wound tissue of two groups of mice for exploring cellular functions. Results: On PID 4, CD34+ cells in the wound tissue of both groups of mice were consisted of 7 cell types, specifically endothelial cells, Fbs, KCs, macrophages, T cells, SMCs, and CLCs. Among these, Fbs were further classified into 5 subpopulations. Compared with those in control group, the proportions of CD34+ endothelial cells, Fbs subpopulation 1, Fbs subpopulation 4, KCs, and CLCs in the wound tissue of mice were increased in diabetic group, while the proportions of CD34+ Fbs subpopulation 2, Fbs subpopulation 3, and SMCs were decreased. The marker genes for annotating CD34+ CLCs, endothelial cells, Fbs subpopulation 1, Fbs subpopulation 2, Fbs subpopulation 3, Fbs subpopulation 4, Fbs subpopulation 5, KCs, macrophages, SMCs, and T cells were respectively metastasis-associated lung adenocarcinoma transcript 1, fatty acid binding protein 4, Gremlin 1, complement component 4B, H19 imprinted maternally expressed transcript, Dickkopf Wnt signaling pathway inhibitor 2, fibromodulin, keratin 5, CD74 molecule, regulator of G protein signaling 5, and inducible T-cell co-stimulator molecule. KEGG and GO enrichment analysis revealed that, compared with those in control group, DEGs with significant differential expression (SDE) in CD34+ Fbs from the wound tissue of mice in diabetic group on PID 4 were significantly enriched in terms related to inflammatory response, extracellular matrix (ECM) organization, regulation of cell proliferation, and aging (with Pvalues all <0.05), DEGs with SDE in CD34+ SMCs were significantly enriched in terms related to cell migration, apoptotic process, positive regulation of transcription, and phagosome (with P values all <0.05), DEGs with SDE in CD34+ KCs were significantly enriched in terms related to mitochondrial function, transcription, and neurodegenerative diseases (with P values all <0.05), and DEGs with SDE in CD34+ CLCs were significantly enriched in terms related to rhythm regulation, ECM, and viral infection (with P values all <0.05). Conclusions: CD34+ cells display high heterogeneity in the healing process of full-thickness skin defect wounds in both normal mice and diabetic mice. The significantly enriched functions of DEGs with SDE in CD34+ cell subpopulations in the wound tissue of the two mouse groups are closely related to the wound healing process.
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Affiliation(s)
- J He
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - J R Wang
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - W J Gan
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - G Q Li
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - Q Xin
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - Z P Lin
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - S B Ruan
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
| | - X D Chen
- Department of Burns and Plastic Surgery, the First People's Hospital of Foshan, Foshan 528000, China
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Liao WZ, Zhu XF, Xin Q, Mo YT, Wang LL, He XP, Guo XG. Fruit Intake and Alzheimer's Disease: Results from Mendelian Randomization. J Prev Alzheimers Dis 2024; 11:445-452. [PMID: 38374751 DOI: 10.14283/jpad.2024.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Alzheimer's disease (AD) is the leading cause of dementia in old age, recognized as a global health priority. To explore causal effects of fresh fruit intake and dried fruit intake on AD liability, this study utilized GWAS from the UK Biobank and FinnGen to conduct Mendelian randomization (MR) analysis, and used inverse variance weighted (IVW), MR-Egger, and weighted median approaches for MR estimates, and visual inspections judged result stability. Results suggested little evidence of a potential causal relationship between fresh fruit intake and AD (OR=0.97, 95%CI=0.50-1.91, P=0.939), while significant, robust causality was indicated between dried fruit intake and AD (OR=4.09, 95%CI=2.07-8.10, P<0.001). Stability evaluations showed no heterogeneity or pleiotropy affecting interpretability and credibility of primary analyses. In conclusion, we strengthened evidence for positive causality from dried fruit intake to AD liability, with causality from fresh fruit intake on AD risk was not demonstrated.
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Affiliation(s)
- W-Z Liao
- Wan-Zhe Liao, Nanshan College of Guangzhou Medical University, Guangzhou, China, E-mail: ; Xu-Guang Guo, Department of Clinical Laboratory Medicine, The Third Affiliated Hospital of Guangzhou Medical University Guangzhou, China. E-mail:
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Kronemer SI, Aksen M, Ding JZ, Ryu JH, Xin Q, Ding Z, Prince JS, Kwon H, Khalaf A, Forman S, Jin DS, Wang K, Chen K, Hu C, Agarwal A, Saberski E, Wafa SMA, Morgan OP, Wu J, Christison-Lagay KL, Hasulak N, Morrell M, Urban A, Todd Constable R, Pitts M, Mark Richardson R, Crowley MJ, Blumenfeld H. Human visual consciousness involves large scale cortical and subcortical networks independent of task report and eye movement activity. Nat Commun 2022; 13:7342. [PMID: 36446792 PMCID: PMC9707162 DOI: 10.1038/s41467-022-35117-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 11/17/2022] [Indexed: 11/30/2022] Open
Abstract
The full neural circuits of conscious perception remain unknown. Using a visual perception task, we directly recorded a subcortical thalamic awareness potential (TAP). We also developed a unique paradigm to classify perceived versus not perceived stimuli using eye measurements to remove confounding signals related to reporting on conscious experiences. Using fMRI, we discovered three major brain networks driving conscious visual perception independent of report: first, increases in signal detection regions in visual, fusiform cortex, and frontal eye fields; and in arousal/salience networks involving midbrain, thalamus, nucleus accumbens, anterior cingulate, and anterior insula; second, increases in frontoparietal attention and executive control networks and in the cerebellum; finally, decreases in the default mode network. These results were largely maintained after excluding eye movement-based fMRI changes. Our findings provide evidence that the neurophysiology of consciousness is complex even without overt report, involving multiple cortical and subcortical networks overlapping in space and time.
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Affiliation(s)
- Sharif I Kronemer
- Department of Neurology, Yale University, New Haven, CT, USA
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA
| | - Mark Aksen
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Julia Z Ding
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Jun Hwan Ryu
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Qilong Xin
- Department of Neurology, Yale University, New Haven, CT, USA
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA
| | - Zhaoxiong Ding
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Jacob S Prince
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Hunki Kwon
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Aya Khalaf
- Department of Neurology, Yale University, New Haven, CT, USA
- Biomedical Engineering and Systems, Faculty of Engineering, Cairo University, Giza, Egypt
| | - Sarit Forman
- Department of Neurology, Yale University, New Haven, CT, USA
| | - David S Jin
- Department of Neurology, Yale University, New Haven, CT, USA
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA
| | - Kevin Wang
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Kaylie Chen
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Claire Hu
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Akshar Agarwal
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Erik Saberski
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Syed Mohammad Adil Wafa
- Department of Neurology, Yale University, New Haven, CT, USA
- Child Study Center, Yale University, New Haven, CT, USA
- Division of Psychology and Language Sciences, University College London, London, UK
| | - Owen P Morgan
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Jia Wu
- Child Study Center, Yale University, New Haven, CT, USA
| | | | | | | | | | - R Todd Constable
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA
- Department of Neurosurgery, Yale University, New Haven, CT, USA
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, CT, USA
| | | | - R Mark Richardson
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | - Hal Blumenfeld
- Department of Neurology, Yale University, New Haven, CT, USA.
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT, USA.
- Department of Neurosurgery, Yale University, New Haven, CT, USA.
- Department of Neuroscience, Yale University, New Haven, CT, USA.
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Xin Q, Maximov AL, Liu BY, Wang W, Guo HY, Xiao LF, Wu W. A Highly Selective Cr2O3/nano-ZSM-5 Bifunctional Catalysts for CO2 Hydrogenation to Aromatics. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222020100] [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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Xin Q, Yuan RK, Zitting KM, Wang W, Purcell SM, Vujovic N, Ronda JM, Quan SF, Williams JS, Buxton OM, Duffy JF, Czeisler CA. Impact of chronic sleep restriction on sleep continuity, sleep structure, and neurobehavioral performance. Sleep 2022; 45:6537622. [PMID: 35218665 PMCID: PMC9272266 DOI: 10.1093/sleep/zsac046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/15/2022] [Indexed: 11/13/2022] Open
Abstract
Chronic sleep restriction (CSR) has been associated with adverse effects including cognitive impairment and increased risk of diabetes and cardiovascular disease. Yet, sleep restriction therapy is an essential component of most behavioral treatments for insomnia. Moreover, little is known about the impact of CSR on sleep continuity and structure in healthy people whose need for sleep is satiated. We investigated the impact of CSR on sleep continuity and structure in nine healthy participants. They had 4 nights of sleep extension, 2 nights of post-extension sleep, 21 nights of CSR (5/5.6-hour time-in-bed), and 9 nights of recovery sleep. Compared to postextension sleep, during CSR sleep duration was reduced by 95.4 ± 21.2 min per night, Slow-Wave Activity was significantly increased, and sleep was more consolidated. During recovery, sleep duration was increased by 103.3 ± 23.8 min compared to CSR, and the CSR-induced increase in Slow-Wave Activity persisted, particularly after the 5-hour exposure. Yet, we found that sustained vigilant attention was not fully recovered even after nine nights of recovery sleep. Our results suggest that CSR improves traditional metrics of sleep quality and may have a persistent impact on sleep depth, which is consistent with the reported benefits on sleep continuity and structure of sleep restriction therapy. However, these improvements in traditional metrics of sleep quality were associated with deterioration rather than improvement in neurobehavioral performance, demonstrating that sleep duration should be included in assessments of sleep quality. These results have implications for the long-term use of sleep restriction in the behavioral treatment of insomnia. Clinical Trial Registration: Impact of Chronic Circadian Disruption vs. Chronic Sleep Restriction on Metabolism (https://clinicaltrials.gov/ct2/show/; #NCT02171273).
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Affiliation(s)
- Qilong Xin
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Robin K Yuan
- Corresponding author. Robin K. Yuan, RF386D, Division of Sleep and Circadian Disorders, 221 Longwood Avenue, Boston, MA 02115, USA.
| | - Kirsi-Marja Zitting
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Wei Wang
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Shaun M Purcell
- Department of Psychiatry, Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Nina Vujovic
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Joseph M Ronda
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Stuart F Quan
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Jonathan S Williams
- Department of Medicine, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Orfeu M Buxton
- Department of Biobehavioral Health, Pennsylvania State University, University Park PA 16802, USA
| | - Jeanne F Duffy
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Charles A Czeisler
- Department of Medicine and Neurology, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA 02115, USA,Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA
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Zhang T, Xin Q, Kang JM. Bevacizumab for recurrent glioblastoma: a systematic review and meta-analysis. Eur Rev Med Pharmacol Sci 2021; 25:6480-6491. [PMID: 34787852 DOI: 10.26355/eurrev_202111_27092] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The phenomenon is that few randomized control trials (RCTs) directly compared the effects of bevacizumab with other types of standard treatments for recurrent glioblastoma (GBM). We conducted a systematic review and meta-analysis to assess the efficacy of bevacizumab in recurrent GBM patients. MATERIALS AND METHODS We searched electronic databases (Medline, Embase, and Web of Science) contrasting the bevacizumab with standard treatments up to May 2021. For the continuous outcomes of median progression-free survival (PFS) and median overall survival (OS), we summarized the mean difference (MD) as the effective index. We used relative risk (RR) to estimate the data with a random-effects model to get the outcomes of objective response rate (ORR), 12-month OS, 6-month PFS, and any mentioned adverse events. RESULTS A total of 807 patients in 5 RCTs included into our systematic review and meta-analysis. The results showed bevacizumab could provide benefits of the ORR (RR, 2.67; 95% CI: 1.14-6.26, p = 0.02), median PFS (MD, 1.12 months; 95% CI: 0.35-1.90 months, p = 0.005), but not the median OS (MD, -0.19 months; 95% CI: -1.37-0.99 months, p = 0.75). Whereas the rates of the secondary outcomes of interest were similar between the bevacizumab group and control group, including 6 month-PFS (RR, 1.23; 95% CI, 0.82-1.84, p = 0.32) and 12 month-OS (RR, 0.93; 95% CI, 0.79-1.09, p = 0.36). As for adverse events, patients with bevacizumab showed higher rates of grade 3/4 and any grade hypertension compared with those with standard treatments (RR, 3.71; 95% CI: 1.17-11.76, p = 0.03; RR, 2.68; 95% CI: 1.26-5.76, p = 0.01, respectively). CONCLUSIONS This study provides clear proof of the beneficial effects of bevacizumab treatment in recurrent GBM patients. The only observed adverse event was grade 3/4 or any grade hypertension.
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Affiliation(s)
- T Zhang
- Department of Neurosurgery, Tianjin Hospital, Tianjin, China.
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Xin Q, Ortiz-Terán L, Diez I, Perez DL, Ginsburg J, El Fakhri G, Sepulcre J. Sequence Alterations of Cortical Genes Linked to Individual Connectivity of the Human Brain. Cereb Cortex 2020; 29:3828-3835. [PMID: 30307489 DOI: 10.1093/cercor/bhy262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/27/2018] [Accepted: 09/19/2018] [Indexed: 12/24/2022] Open
Abstract
Individual differences in humans are driven by unique brain structural and functional profiles, presumably mediated in part through differential cortical gene expression. However, the relationships between cortical gene expression profiles and individual differences in large-scale neural network organization remain poorly understood. In this study, we aimed to investigate whether the magnitude of sequence alterations in regional cortical genes mapped onto brain areas with high degree of functional connectivity variability across individuals. First, human genetic expression data from the Allen Brain Atlas was used to identify protein-coding genes associated with cortical areas, which delineated the regional genetic signature of specific cortical areas based on sequence alteration profiles. Thereafter, we identified brain regions that manifested high degrees of individual variability by using test-retest functional connectivity magnetic resonance imaging and graph-theory analyses in healthy subjects. We found that rates of genetic sequence alterations shared a distinct spatial topography with cortical regions exhibiting individualized (highly-variable) connectivity profiles. Interestingly, gene expression profiles of brain regions with highly individualized connectivity patterns and elevated number of sequence alterations are devoted to neuropeptide-signaling-pathways and chemical-synaptic-transmission. Our findings support that genetic sequence alterations may underlie important aspects of brain connectome individualities in humans. Significance Statement: The neurobiological underpinnings of our individuality as humans are still an unsolved question. Although the notion that genetic variation drives an individual's brain organization has been previously postulated, specific links between neural connectivity and gene expression profiles have remained elusive. In this study, we identified the magnitude of population-based sequence alterations in discrete cortical regions and compared them to the brain topological distribution of functional connectivity variability across an independent human sample. We discovered that brain regions with high degree of connectional individuality are defined by increased rates of genetic sequence alterations; these findings specifically implicated genes involved in neuropeptide-signaling pathways and chemical-synaptic transmission. These observations support that genetic sequence alterations may underlie important aspects of the emergence of the brain individuality across humans.
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Affiliation(s)
- Qilong Xin
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Laura Ortiz-Terán
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Ibai Diez
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Neurotechnology Laboratory, Tecnalia Health Department, Tecnalia, Derio, Spain
| | - David L Perez
- Departments of Neurology and Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston MA, USA.,Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - Julia Ginsburg
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Georges El Fakhri
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jorge Sepulcre
- Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.,Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
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Su XF, Zhang YL, Maximov AL, Zhang K, Xin Q, Feng CQ, Bai XF, Wu W. Conversion of Methanol to Aromatic-Rich Gasoline over High-Efficiency Bifunctional Catalysts: Green Synthesis of GaZSM-5 Zeolites via Dry-Gel Conversion Strategy. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220010140] [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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Liu CC, Zhzang HL, Zhi LL, Jin P, Zhao L, Li T, Zhou XM, Sun DS, Cheng GH, Xin Q, Shi L, Xia M. Correction to: CDK5 Regulates PD-L1 Expression and Cell Maturation in Dendritic Cells of CRSwNP. Inflammation 2018; 42:145. [PMID: 30264169 DOI: 10.1007/s10753-018-0902-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The article CDK5 Regulates PD-L1 Expression and Cell Maturation in Dendritic Cells of CRSwNP, written by C. C. Liu, H. L. Zhang, L. L. Zhi, P. Jin, L. Zhao, T. Li, X. M. Zhou, D. S. Sun, G. H. Cheng, Q. Xin, L. Shi, and M. Xia was originally published electronically on the publisher's internet.
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Affiliation(s)
- C C Liu
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - H L Zhzang
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - L L Zhi
- Department of Otolaryngology, The Central Hospital of Zibo, No.54, Gongqingtuan West Road, Zhangdian District, Zibo, Shandong Province, China
| | - P Jin
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - L Zhao
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - T Li
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - X M Zhou
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China
| | - D S Sun
- Central Laboratory, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, Shandong Province, China
| | - G H Cheng
- Department of Cancer Center, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, Shandong, Province, China
| | - Q Xin
- Department of Cancer Center, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, Shandong, Province, China
| | - L Shi
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China.
| | - M Xia
- Department of Otolaryngology, The Second Hospital of Shandong University, Shandong University, No.274 Beiyuan Road, Jinan, 250033, Shandong Province, China.
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Cheng G, Xin Q, Li K, Sun C, Lin Z, Luan Y, Wang J, Qi T, Chen Y, Xu D, Kong F. The Association between O(6)-Methylguanine DNA Methyltransferase (MGMT) rs11016879 and rs7069143 Polymorphisms and Susceptibility to Еsophageal Аdenocarcinoma in a Han Chinese Population. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418040063] [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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Liu JX, He N, Liu CY, Wang GR, Xin Q, Guo HC. Engineering the porosity and acidity of H-Beta zeolite by dealumination for the production of 2-ethylanthraquinone via 2-(4′-ethylbenzoyl)benzoic acid dehydration. RSC Adv 2018; 8:9731-9740. [PMID: 35540810 PMCID: PMC9078711 DOI: 10.1039/c7ra13576a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/19/2018] [Indexed: 11/21/2022] Open
Abstract
Environmentally-friendly zeolites have been used commercially to replace concentrated sulfuric acid and oleum in the alkylation reactions and dehydration of alcohols. However, moderate activity, associated with access and diffusion limitations, low intramolecular dehydration selectivity, associated with unsatisfactory acidity, and unknown reusability have hampered their industrial implementation in the dehydration of bulky 2-(4′-ethylbenzoyl)benzoic acid (E-BBA) to 2-ethylanthraquinone (2-EAQ). Herein, we have discovered that after being treated with mild HNO3, nano-sized H-Beta zeolite showed outstanding catalytic activity, selectivity and reusability, compared with a commercial oleum catalyst. A number of techniques, such as XRD, XPS, XRF, 29Si MAS NMR, 27Al MQ MAS NMR, FTIR, NH3-TPD, argon physisorption and HR-TEM, have been employed to decouple the interdependence between acidity, porosity and catalytic performance. It was found that mild HNO3 treatment could clean out the extra-framework aluminium deposits and selectively extract the aluminium species on the outer surface of Beta zeolites, which strengthened the acidity of the Brønsted acid sites (Si(OH)Al) inside the H-Beta micropores, thus increasing the possibility of intramolecular dehydration of E-BBA. Moreover, this mild HNO3 treatment also dredged the network of intercrystalline mesopores, alleviating the diffusion constraints. Therefore, through the dual adjustment of acidity and porosity, dealuminated H-Beta zeolite has a promising future in the green synthesis of 2-EAQ. Mild HNO3 treated nano-sized H-Beta zeolite showed outstanding catalytic activity, selectivity and reusability, compared with a commercial oleum catalyst. ![]()
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Affiliation(s)
- J. X. Liu
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - N. He
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - C. Y. Liu
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - G. R. Wang
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian
- China
| | - Q. Xin
- State Key Laboratory for Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - H. C. Guo
- State Key Laboratory of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian
- China
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Cheng G, Wang X, Yuan X, Xin Q, Sun Q, Li K, Sun C, Lin Z, Luan Y, Wang Y, Kong F, Xu D. Association of monocyte chemoattractant protein-1 rs1024611 and telomerase rs2736100 polymorphisms with susceptibility to pulmonary tuberculosis in Han Chinese population. Genet Mol Res 2017. [DOI: 10.4238/gmr16039697] [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: 11/03/2022]
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13
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Dang J, Shan S, Li J, Zhao H, Xin Q, Liu Y, Bian X, Liu Q. Gene-gene interactions of IRF5, STAT4, IKZF1 and ETS1 in systemic lupus erythematosus. ACTA ACUST UNITED AC 2014; 83:401-8. [PMID: 24697319 DOI: 10.1111/tan.12349] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 09/21/2013] [Revised: 01/18/2014] [Accepted: 03/05/2014] [Indexed: 01/27/2023]
Abstract
Interferon (IFN) activation signaling and T helper 17 (Th17)-cell/B-cell regulation play a critical role in the pathogenesis of systemic lupus erythematosus (SLE). Several studies have provided convincing evidence that polymorphisms in IRF5, STAT4, IKZF1 and ETS1 from these pathways may be involved in SLE by affecting gene expression or epistasis. We analyzed the genetic interaction in known SLE susceptibility loci from the four genes in northern Han Chinese. A total of 946 northern Han Chinese participated in this study (370 unrelated SLE patients and 576 healthy controls). Subjects underwent genotyping for the single-nucleotide polymorphisms (SNPs) rs2004640 in IRF5, rs7574865 in STAT4, rs4917014 in IKZF1 and rs1128334 in ETS1 by use of a TaqMan SNP genotyping assay and direct sequencing. Gene-gene interaction analysis involved direct counting, multifactor dimensionality reduction (MDR) and linear regression analysis. SLE patients and controls differed in allele frequencies of rs7574865, rs1128334 (P < 0.001) and rs4917014 (P < 0.01). Direct counting revealed that the frequency of risk homozygote combinations was higher for SLE patients than controls (P < 0.01). Furthermore, 2-, 3- and 4-way gene-gene epistasis in SLE was confirmed by parametric methods and MDR analysis. Gene expression analysis partially supported the findings. Our study confirmed the association of the IFN pathway or Th17/B-cells and the pathogenesis of SLE, and gene-gene interaction in this pathway may increase the risk of SLE.
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Affiliation(s)
- J Dang
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, Shandong University School of Medicine, Jinan, China; Department of Medical Genetics and Cell Biology, Ningxia Medical University, Yinchuan, China
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14
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Feng YP, Ke X, Zhai M, Xin Q, Gong YQ, Liu QJ. Novel deletion of SPAST in a Chinese family with hereditary spastic paraplegia. Singapore Med J 2013; 54:251-4. [DOI: 10.11622/smedj.2013102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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15
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Zhao H, Yang W, Qiu R, Li J, Xin Q, Wang X, Feng Y, Shan S, Liu Y, Gong Y, Liu Q. An intronic variant associated with systemic lupus erythematosus changes the binding affinity of Yinyang1 to downregulate WDFY4. Genes Immun 2012; 13:536-42. [PMID: 22972472 DOI: 10.1038/gene.2012.33] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Two recent genome-wide association studies of East Asian populations revealed three genetic variants in WDFY4/LRRC18 associated with systemic lupus erythematosus (SLE). To identify the gene contributing to this disease susceptibility, we examined the mRNA expression of WDFY4 and LRRC18 in patients with SLE and healthy controls. WDFY4 was significantly downregulated in SLE patients as compared with controls. We used allelic expression and dual-luciferase assays to identify the functional variant. Transcriptional activity was lower for the rs877819A than -G allele. Electrophoretic mobility shift and supershift assays revealed that the transcription factor Yinyang1 (YY1) binds to rs877819, with lower affinity to the A allele, which explained the reduced transcriptional activity. This effect was further confirmed by YY1 small interfering RNA knockdown, overexpression and chromatin immunoprecipitation experiments. rs877819 in WDFY4 might be the functional site associated with SLE by reduced binding of YY1 and downregulating WDFY4 expression.
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Affiliation(s)
- H Zhao
- Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Medical Genetics, Shandong University School of Medicine, Shandong, PRC
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16
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Xiong M, Li S, Peng X, Feng Y, Yu G, Xin Q, Gong Y. Adipogenesis in ducks interfered by small interfering ribonucleic acids of peroxisome proliferator-activated receptor gamma gene. Poult Sci 2010; 89:88-95. [PMID: 20008806 PMCID: PMC7107157 DOI: 10.3382/ps.2009-00289] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [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] [Indexed: 01/18/2023] Open
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) participates in adipocyte differentiation and maintenance, including the promotion of lipid storage in mammals. In the present study, 3 duck PPARγ small interfering RNA (siRNA) expression plasmids were constructed to investigate the effect of downregulating the expression of PPARγ on adipogenesis and fat accumulation in ducks. The results indicate that the 3 siRNA specific for conserved regions of PPARγ can effectively inhibit expression of PPARγ. It was demonstrated that the expression of lipoprotein lipase and adipocyte fatty acid-binding protein in duck adipose tissue is repressed when the expression of PPARγ is downregulated by siRNA. At the same time, the weight of abdominal fat at 21 and 35 d of age is decreased significantly (P < 0.05) compared with the control. However, the triglyceride levels in serum and muscle are not affected when the mRNA of PPARγ is repressed. The current study indicates that the suppression of PPARγ reduces abdominal fat deposition and regulates adipogenesis in ducks.
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Affiliation(s)
- M Xiong
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, P. R. China
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17
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Lv Z, Xin Q, Guo Z, Song Z. Catalytic Performance and Dispersion Behavior of Supported Nano‐Amorphous Alloy NiB/MCM‐41 Catalysts Prepared by Chemical Reductive Deposition. J DISPER SCI TECHNOL 2007. [DOI: 10.1080/01932690701463100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Wang Q, Sun GQ, Jiang LH, Xin Q, Sun SG, Jiang YX, Chen SP, Jusys Z, Behm RJ. Adsorption and oxidation of ethanol on colloid-based Pt/C, PtRu/C and Pt3Sn/C catalysts: In situ FTIR spectroscopy and on-line DEMS studies. Phys Chem Chem Phys 2007; 9:2686-96. [PMID: 17627312 DOI: 10.1039/b700676b] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interaction of colloid-based, carbon supported Pt/C (40 wt%), PtRu/C (45 wt%) and Pt3Sn/C (24 wt%) catalysts with ethanol and their performance for ethanol electrooxidation were investigated in model studies by electrochemical, in situ infrared spectroscopy and on-line differential electrochemical mass spectrometry measurements. The combined application of in situ spectroscopic techniques on realistic catalysts and under realistic reaction (DEMS, IR) and transport conditions (DEMS) yields new insight on mechanistic details of the reaction on these catalysts under the above reaction and transport conditions. Based on these results, the addition of Sn or Ru, though beneficial for the overall activity for ethanol oxidation, does not enhance the activity for C-C bond breaking. Dissociative adsorption of ethanol to form CO2 is more facile on the Pt/C catalyst than on PtRu/C and Pt3Sn/C catalysts within the potential range of technical interests (<0.6 V), but Pt/C is rapidly blocked by an inhibiting CO adlayer. In all cases acetaldehyde and acetic acid are dominant products, CO2 formation contributes less than 2% to the total current. The higher ethanol oxidation current density on the Pt3Sn/C catalyst at these potentials results from higher yields of C2 products, not from an improved complete ethanol oxidation to CO2.
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Affiliation(s)
- Q Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Xin Q, Wightman RM. Simultaneous detection of catecholamine exocytosis and Ca2+ release from single bovine chromaffin cells using a dual microsensor. Anal Chem 1998; 70:1677-81. [PMID: 9599575 DOI: 10.1021/ac970746o] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A dual microsensor with a 5 microns radius was fabricated to detect simultaneously Ca2+ and catecholamines following their secretion from individual biological cells. Detection of Ca2+ was based on changes in fluorescence as a result of its binding with a surface-attached dye, and catecholamines were detected by amperometry. The fluorescent dye employed, calcium green-1 dextran, is a selective chelator for Ca2+. It was attached to the tip of a carbon fiber electrode by cross-linking with 5% glutaraldehyde. The dual microsensor has a subsecond response time for both Ca2+ and catecholamine concentration changes. Ca2+ concentrations of 100 nM can be detected, while the detection limit for catecholamine is in the micromolar range. The utility of the dual microsensor was evaluated at the surface of bovine adrenal medullary cells. Release of catecholamines by exocytosis was evoked by transient application of histamine. This was detected by amperometry, and it was found to be accompanied by Ca2+ release, as measured by fluorescence from the same sensor.
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Affiliation(s)
- Q Xin
- Department of Chemistry, University of North Carolina, Chapel Hill 27599-3290, USA
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21
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Abstract
Enzyme-modified amperometric microsensors have been utilized in the investigation of acetylcholine and choline diffusion in solution and choline uptake and diffusion in rat brains. A small amount of the substance of interest was introduced by pressure injection and transport to the sensor was monitored. The apparent diffusion coefficients for acetylcholine and choline in agarose gel perfused with physiological solutions were determined to be 5.2 +/- 0.7 x 10(-6) cm2/s and 6.1 +/- 0.8 x 10(-6) cm2/s, respectively. Choline transport was monitored in two brain regions: the caudate and anterior hypothalamus. The transport time of choline in the caudate was concentration dependent, but was unaffected by the presence of a competitive, high-affinity uptake inhibitor, hemicholinium-3. The apparent diffusion coefficient (D) and uptake rate (k) for choline in the caudate and anterior hypothalamus were calculated using a model for point source diffusion coupled with first-order uptake kinetics. The effect of the sensors' response time on the measurements was removed by deconvolution. The D and k were 1.8 +/- 0.1 x 10(-6) cm2/s and 2.0 +/- 0.1 x 10(-2) s-1 in the caudate and 1.9 +/- 0.1 x 10(-6) cm2/s and 3.2 +/- 0.6 x 10(-2) s-1 in the anterior hypothalamus. The reduced diffusion coefficient determined in brain tissue compared to agar gel is consistent with the increased tortuosity of the brain microenvironment. A substance in brain tissue, presumably acetylcholinesterase, prevents the use of differential measurements of acetylcholine because choline sensors became sensitive to acetylcholine.
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Affiliation(s)
- Q Xin
- Department of Chemistry, University of North Carolina, Chapel Hill 27599-3290, USA
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Gao X, Ruiz P, Xin Q, Guo X, Delmon B. Effect of Coexistence of Magnesium Vanadate Phases in the Selective Oxidation of Propane to Propene. J Catal 1994. [DOI: 10.1006/jcat.1994.1185] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Luo H, Zhou H, Lin L, Liang D, Li C, Fu D, Xin Q. Role of Vanadium Promoter in Rh-V/SiO2 Catalysts for the Synthesis of C2-Oxygenates from Syngas. J Catal 1994. [DOI: 10.1006/jcat.1994.1027] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Li C, Xin Q, Ruiz P, Guo X, Delmon B. Inhibition of formation and removal of adsorbed species, in the isobutene—methacrolein SnO2Sb2O4 system. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0304-5102(92)85008-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Huang L, Zhu SJ, Xin Q. [Clinical characteristics of silent myocardial ischemia and the effect of nifedipine treatment]. Zhonghua Nei Ke Za Zhi 1989; 28:717-9, 767. [PMID: 2636087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The characteristics of ischemic episodes in exercise test and daily activities were observed in a silent myocardial ischemia (SMI) group and an anginal group (23 patients each). 15 patients in the SMI group were treated with nifedipine. In exercise test, the time of onset of ischemia was earlier and the ischemic threshold was lower in SMI group. During daily activities, the frequency of SMI was high. The heart rate just before onset of SMI was lower than the mean heart rate in 24-hour Holter monitoring. The highest frequency of SMI was found between 5 AM and 12 noon. Postinfarction patients had a higher frequency and a longer duration of SMI than noninfarction patients. The frequency and duration of SMI decreased in the 15 patients treated with nifedipine in SMI group. It is concluded that silent ischemic episodes were frequent and occurred easily. They might be associated with poor prognosis in CAD patients. Nifedipine was effective in reducing the frequency and duration of SMI in our patients.
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