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Han L, Song Y, Xiang W, Wang Z, Wang Y, Zhou X, Zhu DS, Guan Y. Fibrinogen deposition promotes neuroinflammation and fibrin-derived γ 377-395 peptide ameliorates neurological deficits after ischemic stroke. Int Immunopharmacol 2024; 131:111831. [PMID: 38489969 DOI: 10.1016/j.intimp.2024.111831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/09/2024] [Accepted: 03/06/2024] [Indexed: 03/17/2024]
Abstract
BACKGROUND Fibrin(ogen) deposition in the central nervous system (CNS) contributes to neuropathological injury; however, its role in ischemic stroke is unknown. In this study, we identified fibrinogen as a novel proinflammatory regulator of post-stroke neuroinflammation and revealed the neuro-protection effect of fibrin-derived γ377-395peptide in stroke. METHODS Fibrinogen depletion and fibrinogen-derived γ377-395peptide treatment were performed 2 h after establishing a permanent middle cerebral artery occlusion (pMCAO) model. The infarction volume, neurological score, fibrin(ogen) deposition, and inflammatory response were evaluated 24 h after occlusion. Both in vivo and in vitro studies were conducted to assess the therapeutic potential of the γ377-395peptide in blocking the interactions between fibrin(ogen) and neutrophils. RESULTS Fibrin(ogen) deposited in the infarct core promoted post-stroke inflammation and exacerbated neurological deficits in the acute phase after stroke onset. Reducing fibrinogen deposition resulted in a decrease in infarction volume, improved neurological scores, and reduced inflammation in the brain. Additionally, the presence of neutrophil accumulation near fibrin(ogen) deposits was observed in ischemic lesions, and the engagement of fibrin(ogen) by integrin receptor αMβ2 promoted neutrophil activation and post-stroke inflammation. Finally, inhibiting fibrin(ogen)-mediated neutrophil activation using a fibrinogen-derived γ377-395peptide significantly attenuated neurological deficits. CONCLUSIONS Fibrin(ogen) is a crucial regulator of post-stroke inflammation and contributes to secondary brain injury. The inflammation induced by fibrin(ogen) is primarily driven by neutrophils during acute ischemic stroke and can be ameliorated using the fibrin-derived γ377-395peptide. Targeting the fibrin(ogen)-mediated neuropathological process represents a promising approach for neuroprotective therapy after stroke while preserving its beneficial coagulation function.
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Affiliation(s)
- Lu Han
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yaying Song
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Weiwei Xiang
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Ze Wang
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yishu Wang
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xiajun Zhou
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; Department of Neurology, Baoshan Branch, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China.
| | - Yangtai Guan
- Department of Neurology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Yang H, Xie C, Wu YF, Cheng Y, Zhu DS, Guan YT. N 6-Methyladenosine (m 6A) Methylation Is Associated with the Immune Microenvironments in Acute Intracerebral Hemorrhage (ICH). Mol Neurobiol 2024; 61:1781-1793. [PMID: 37776495 DOI: 10.1007/s12035-023-03643-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 09/06/2023] [Indexed: 10/02/2023]
Abstract
Researchers have recently found that N6-methyladenosine (m6A) is a type of internal posttranscriptional modification that is essential in mammalian mRNA. However, the features of m6A RNA methylation in acute intracerebral hemorrhage (ICH) remain unknown. To explore differential methylations and to discover their functions in acute ICH patients, we recruited three acute ICH patients, three healthy controls, and an additional three patients and healthy controls for validation. The m6A methylation levels in blood samples from the two groups were determined by ultrahigh-performance liquid chromatography coupled with triple quadruple mass spectrometry (UPLC-QQQ-MS). Methylated RNA immunoprecipitation sequencing (MeRIP-seq) was employed to identify differences in m6A modification, and the differentially expressed m6A-modified genes were confirmed by MeRIP-qPCR. We found no significant differences in the total m6A levels between the two groups but observed differential methylation peaks. Compared with the control group, the coding genes showing increased methylation following acute ICH were mostly involved in processes connected with osteoclast differentiation, the neurotrophin signaling pathway, and the spliceosome, whereas genes with reduced m6A modification levels after acute ICH were found to be involved in the B-cell and T-cell receptor signaling pathways. These results reveal that differentially m6A-modified genes may influence the immune microenvironments in acute ICH.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Chong Xie
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Cheng
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
- Department of Neurology, Shanghai Yangzhi Rehabilitation Hospital, School of Medicine, Tongji University, Shanghai, China.
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Wang Z, Yuan J, Wan WB, Ding J, Han L, Zhao P, Guo K, Gao L, Zhou XJ, Zhu DS, Guan YT. Positive association between urinary albumin-creatinine ratio and lower extremity peripheral arterial disease in Chinese diabetes patients: A cross-section study with propensity score matching analysis. Nutr Metab Cardiovasc Dis 2023; 33:541-550. [PMID: 36646604 DOI: 10.1016/j.numecd.2022.11.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/13/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND AND AIMS Elevated urinary albumin-creatinine ratio (ACR) is an established risk factor for lower extremity peripheral arterial disease (PAD) in non-diabetes individual. This study aimed to determine the relationship between urinary ACR level and PAD in diabetes population. METHODS AND RESULTS A cross-section study with 1396 hospitalized diabetes participants from department of endocrinology and neurology were performed and the propensity score matching method was applied to reduce the effects of confounding factors between the matched PAD and Non-PAD groups. The relationship between urinary ACR and ankle-brachial index (ABI) was analyzed by linear curve fitting analyses and multiple logistic regression models. Our study showed that the prevalence of PAD (low ABI, ABI<0.9) was 7.09% in our diabetes patients. The ABI level was significantly lower in high ACR group compared with those in normal urinary ACR group (1.11 ± 0.17 vs 1.13 ± 0.15, p = 0.010). The prevalence of PAD was increased with the increased tertile's of log2-transformed ACR in total patients before and after propensity score matching (p < 0.001 and p = 0.007, respectively). The OR (95% CI) between log2-transformed ACR and PAD was 1.0 and 1.70 (1.08-2.69, p = 0.022) respectively in normal and high ACR levels in diabetes patients after adjusting for potential confounders. After propensity score matching, the OR (95% CI) between log2-transformed ACR and PAD was 1.0 and 1.85 (1.05-3.23, p = 0.031) respectively in normal and high ACR levels in diabetes patients after adjusting for potential confounders. CONCLUSION The elevated urinary ACR level was associated with PAD in Chinese diabetes patients.
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Affiliation(s)
- Ze Wang
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China; Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China
| | - Wen-Bin Wan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Jie Ding
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Lu Han
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China
| | - Kai Guo
- Department of Endocrinology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai 200090, China
| | - Li Gao
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200444, China; Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Han L, Wang Z, Yuan J, He J, Deng Y, Zhu DS, Guan YT. Circulating Leukocyte as an Inflammatory Biomarker: Association with Fibrinogen and Neuronal Damage in Acute Ischemic Stroke. J Inflamm Res 2023; 16:1213-1226. [PMID: 36974204 PMCID: PMC10039626 DOI: 10.2147/jir.s399021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Background and Purpose Leukocytes and fibrinogen are inflammatory markers involved in circulating and central inflammatory response after ischemic stroke. However, the interaction between circulating leukocytes and serum fibrinogen and neuronal injury in acute ischemic stroke (AIS) patients is still unclear. The present study aimed to investigate the association between circulating leukocyte and serum fibrinogen and neuronal injury respectively in AIS. Methods A cross-section study with 431 hospitalized AIS patients from department of neurology was performed. Circulating leukocytes and fibrinogen were measured, and neuron-specific enolase (NSE) was detected to evaluate central neuronal damage. A propensity score matching method was used to minimize the effects of confounding factors. The relationship between leukocytes and NSE and fibrinogen was analyzed by linear curve fitting analysis and multiple logistic regression models respectively. Results The mean levels of NSE, leukocyte, and fibrinogen were significantly higher in the matched AIS group (n=89) than those of in the healthy control group (n=89) (all p<0.05). Both serum NSE and fibrinogen were increased with the increasing of leukocyte in AIS patients (both p<0.05). Smoothed plots suggested that there are linear relationships between leukocyte and NSE and fibrinogen respectively. Multiple logistic regression analysis showed the OR (95%) for the relationship between leukocyte and high NSE were 1.13 (1.01-1.26, p=0.031) and 1.13 (1.00-1.28, p=0.048), and between leukocyte and high fibrinogen were 1.40 (1.22-1.61, p<0.001) and 1.35 (1.15-1.58, p<0.001) in all AIS patients before and after adjusting for potential confounders. Conclusion Our study suggests that elevated circulating leukocyte was associated with high fibrinogen and neuronal injury in AIS. Therefore, there may be potential targets among circulating leukocyte, fibrinogen and NSE that should be intervened to reduce inflammatory reaction after ischemic stroke.
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Affiliation(s)
- Lu Han
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
| | - Ze Wang
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - Jun He
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - Yun Deng
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
| | - De-Sheng Zhu
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
- Department of Neurology, Baoshan Branch, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200444, People’s Republic of China
- De-Sheng Zhu, Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160, Pujian Road, Shanghai, 200127, People’s Republic of China, Tel +86-13564719779, Email
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, People’s Republic of China
- Correspondence: Yang-Tai Guan, Department of Neurology, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, No. 160, Pujian Road, Shanghai, 200127, People’s Republic of China, Tel +86-13386271865, Fax +86-21-68383482, Email
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Xiang J, Wang LX, Zhang X, Zhu DS, Wang L, Liu LL, Leung CF, Xiang J. Effect of the dangling aromatic ring on neutral luminescent bis(phosphine) Cu( i)/Ag( i) complexes with the asymmetric pyridyl-tetrazolate ligands. RSC Adv 2022; 12:27267-27274. [PMID: 36276005 PMCID: PMC9511692 DOI: 10.1039/d2ra04684a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022] Open
Abstract
A series of neutral luminescent bis(phosphine) Cu(i) complexes of pyridyl-tetrazolate ligands (L1–L3) with the general formula [CuI(Ln)(P^P)] (1–6) were synthesized, which have been well characterized by IR, UV/vis, CV, 1H NMR and 31P NMR. For comparison, an Ag(i) complex [AgI(L2)(PPh3)2] (7) was also synthesized. The crystal structures of 2 and 7 have been further determined by X-ray crystallography. All these Cu(i) compounds show bright luminescence in the solid state with photoluminescence quantum yields (PLQYs) in the range of 25.8% to 85.0%. More interestingly, the Cu(i) complexes bearing an additional dangling aromatic ring on the diimine ligands exhibit enhanced luminescent performance in various solutions and their PLQYs are significantly higher than those of related Cu(i) complexes without steric protection. Compared with 1, the Cu(i) complexes with an additional dangling tetrazole moiety show a significant solvatochromic effect, which is uncommon for luminescent Cu(i) complexes. Moreover, [CuI(L2)(PPh3)2] (2) was further designed as an OLED material, which showed a high external quantum efficiency of 7.7%. The Cu(i) complex of a pyridyl-tetrazolate ligand exhibits enhanced luminescence, which was fabricated as an OLED device with an EQE of 7.7%.![]()
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Affiliation(s)
- Jing Xiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Li-Xin Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Xu Zhang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - De-Sheng Zhu
- School of Physic and Optoelectronic Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Lei Wang
- Anhui Research Academy of Ecological and Environmental Sciences, Hefei, 230071, Anhui, P. R. China
| | - Lu-Lu Liu
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
| | - Chi-Fai Leung
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
| | - Jing Xiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434020, Hubei, P. R. China
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Yang H, Liu W, Wu YF, Zhu DS, Shen XF, Guan YT. Lymphocyte Subsets Are Associated with Disease Status in Neuromyelitis Optica Spectrum Disorders. Neuroimmunomodulation 2022; 29:296-305. [PMID: 34903694 DOI: 10.1159/000520745] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 10/28/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE At present, studies on lymphocytes are mostly conducted on CD19+ B cells and CD27+ B cells in neuromyelitis optica spectrum disorders (NMOSDs), but the exact changes in lymphocyte subsets (CD19+ B cells, CD3+ T cells, CD4+ Th cells, CD8+ Ts cells, the CD4+/CD8+ ratio, and NK [CD56+ CD16] cells) have rarely been studied. This study aimed to assess lymphocyte subset changes in patients with NMOSD. METHODS We performed a cross-sectional study of consecutive patients with acute NMOSD (n = 41), chronic NMOSD (n = 21), and healthy individuals (n = 44). Peripheral blood samples were obtained upon admission, and lymphocyte subsets were analyzed by flow cytometry. Levels of lymphocyte subsets among 3 groups were compared and its correlation with the length of spinal cord lesions was analyzed. RESULTS The levels of peripheral blood CD19+ B cells were significantly higher in patients with acute and chronic NMOSD than in healthy controls (HCs) (17.91 ± 8.7%, 13.08 ± 7.562%, and 12.48 ± 3.575%, respectively; p < 0.001) and were positively correlated with the length of spinal cord lesions in acute NMOSD (r = 0.433, p < 0.05). The peripheral blood CD4+/CD8+ ratio was significantly lower in patients with acute NMOSD and chronic NMOSD than in HCs (1.497 ± 0.6387, 1.33 ± 0.5574, and 1.753 ± 0.659, respectively; p < 0.05), and the levels of peripheral blood NK (CD56+ CD16) cells were significantly lower in patients with acute and chronic NMOSD than in HCs (13.6 ± 10.13, 11.11 ± 7.057, and 14.7 [interquartile range = 9.28], respectively; p < 0.01). CONCLUSIONS The levels of certain subsets of peripheral blood lymphocytes are associated with disease status in NMOSD.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China,
| | - Wei Liu
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xia-Feng Shen
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Department of Neurology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
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Yang H, Wu YF, Ding J, Liu W, Zhu DS, Shen XF, Guan YT. Comprehensive Analysis of N 6-Methyladenosine (m 6A) Methylation in Neuromyelitis Optica Spectrum Disorders. Front Genet 2021; 12:735454. [PMID: 34899833 PMCID: PMC8660110 DOI: 10.3389/fgene.2021.735454] [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] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 10/25/2021] [Indexed: 11/13/2022] Open
Abstract
Background: N6-Methyladenosine (m6A) methylation is the most prevalent internal posttranscriptional modification on mammalian mRNA. But its role in neuromyelitis optica spectrum disorders (NMOSD) is not known. Aims: To explore the mechanism of m6A in NMOSD patients. Methods: This study assessed the m6A methylation levels in blood from two groups: NMOSD patients and healthy controls. Methylated RNA immunoprecipitation Sequencing (MeRIP-seq) and RNA-seq were performed to assess differences in m6A methylation between NMOSD patients and healthy controls. Ultra-high performance liquid chromatography coupled with triple quadruple mass spectrometry (UPLC-QQQ-MS) method was performed to check m6A level. Differential m6A methylation genes were validated by MeRIP-qPCR. Results: Compared with that in the control group, the total m6A level was decreased in the NMOSD group. Genes with upregulated methylation were primarily enriched in processes associated with RNA splicing, mRNA processing, and innate immune response, while genes with downregulated methylation were enriched in processes associated with the regulation of transcription, DNA-templating, and the positive regulation of I-kappa B kinase/NF-kappa B signalling. Conclusion: These findings demonstrate that differential m6A methylation may act on functional genes to regulate immune homeostasis in NMOSD.
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Affiliation(s)
- Hong Yang
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Liu
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xia-Feng Shen
- Department of Neurology, The First Rehabilitation Hospital of Shanghai, Tongji University School of Medicine, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Neurology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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Rong N, Zhao P, Yang J, Fan QL, Zhang Q, Han ZG, Cai J, Zhu DS. The U-Shaped Association Between Serum Uric Acid and Red Blood Cell Distribution Width in Acute Ischemic Stroke. Front Physiol 2021; 12:631369. [PMID: 34413783 PMCID: PMC8369338 DOI: 10.3389/fphys.2021.631369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 06/30/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: The U-shaped association between serum uric acid (SUA) and the functional outcome has been found in acute ischemic stroke (AIS). However, it is unclear if SUA is associated with red blood cell morphology in AIS. This study aimed to determine the relationship between SUA and red blood cell distribution width (RDW) in patients with AIS. Methods: A cross-sectional study including 438 consecutive patients with AIS was conducted. SUA and RDW, biochemical parameters that reflect the heterogeneity of red blood cell volume, were evaluated on admission. We evaluated the association between SUA and RDW through linear curve fitting analyses and two-piecewise regression analyses. Results: The association between SUA levels and RDW followed a U-shape in all patients. In females, the values of RDW significantly decreased with the increment of SUA (per mg/dl: β, -1.45; 95% CI: -2.15 to -0.75; p < 0.001) in patients with SUA <3.86 mg/dl and increased with the increment of SUA (per mg/dl: β, 0.60; 95% CI: 0.22-0.97; p = 0.002) in patients with SUA ≥ 3.86 mg/dl. Similar results were observed in males with the turning point of SUA = 4.82 mg/dl. After adjusting for potential confounders, a U-shaped association between SUA and RDW was maintained in females, but no statistical significance was maintained in patients with SUA ≥ 4.82 mg/dl in males (p = 0.206). Conclusion: In the sample of patients with AIS, we found a U-shaped relationship between SUA levels and RDW, with the turning point of SUA (3.96 mg/dl in females and 4.82 mg/dl in males) by the threshold effect analysis.
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Affiliation(s)
- Ning Rong
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,School of Clinical Medicine, Dali University, Dali, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jin Yang
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qing-Lei Fan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qiang Zhang
- School of Clinical Medicine, Dali University, Dali, China
| | - Zhi-Gang Han
- Department of Radiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Jian Cai
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Yuan J, Cai J, Zhao P, Zhao N, Hong RH, Ding J, Yang J, Fan QL, Zhu J, Zhou XJ, Li ZZ, Zhu DS, Guan YT. Association Between Low-Density Lipoprotein Cholesterol and Platelet Distribution Width in Acute Ischemic Stroke. Front Neurol 2021; 12:631227. [PMID: 33746886 PMCID: PMC7973264 DOI: 10.3389/fneur.2021.631227] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 02/01/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: Elevated low-density lipoprotein cholesterol (LDL-C) is an established risk factor for ischemic stroke; however, whether LDL-C affects the platelet deformation function in the peripheral blood circulation in patients with acute ischemic stroke (AIS) is unknown. The present study aimed to investigate the relationship between LDL-C and platelet distribution width (PDW) in AIS patients. Methods: We conducted a cross-sectional hospitalized-based study of consecutive 438 patients with AIS within 24 h. Blood samples were collected upon admission and prior to drug administration, and LDL-C and PDW (a parameter that reflects the heterogeneity of platelet volume) were assessed. The relationship between LDL-C and PDW were analyzed by linear curve fitting analyses. Crude and adjusted beta coefficients of LDL-C for PDW with 95% confidence intervals were analyzed using multivariate-adjusted linear regression models. Results: The PDW was significantly higher in the high LDL-C group compared with those in the normal LDL-C group (16.28 ± 0.37 fl vs. 16.08 ± 0.37 fl, p < 0.001). Adjusted smoothed plots suggested that there are linear relationships between LDL-C and PDW, and the Pearson's correlation coefficient (95%) was 0.387 (0.304-0.464, p < 0.001). The beta coefficients (95% CI) between LDL-C and PDW were 0.15 (0.12-0.18, p < 0.001) and 0.14 (0.11-0.18, p < 0.001), respectively, in AIS patients before and after adjusting for potential confounders. Conclusion: Our study suggested that the elevated LDL-C level was related to increased PDW among AIS patients.
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Affiliation(s)
- Jian Yuan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jian Cai
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Nan Zhao
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Rong-Hua Hong
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jin Yang
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qing-Lei Fan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jian Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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10
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Hong RH, Zhu J, Li ZZ, Yuan J, Zhao P, Ding J, Fan QL, Yang J, Liu BG, Cai J, Zhu DS, Guan YT. Red blood cell distribution width is associated with neuronal damage in acute ischemic stroke. Aging (Albany NY) 2020; 12:9855-9867. [PMID: 32445553 PMCID: PMC7288978 DOI: 10.18632/aging.103250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/20/2020] [Indexed: 12/16/2022]
Abstract
Elevated red blood cell distribution width (RDW) has been found to be associated with the occurrence of ischemic stroke. However, there is no defined relationship between RDW and neuronal damage in acute ischemic stroke (AIS). This study was designed to determine the relationship between RDW and neuronal damage in AIS patients. A total of 442 consecutive AIS patients from January 2018 to June 2019 were evaluated for neuronal damage, which was estimated by serum neuron-specific enolase (NSE) levels. Red blood cell distribution width-standard deviation (RDW-SD), a parameter that reflects the heterogeneity of red blood cell volume, was also assessed. We evaluated the association between the RDW-SD and serum NSE level through multivariate-adjusted linear regression analysis. Both the serum NSE level and the incidence of high NSE increased according to the increased RDW-SD tertile in AIS patients (p<0.01). There was a positive correlation between RDW-SD and serum NSE levels (r=0.275, 95% CI: 0.187-0.359, p<0.001). The beta coefficients (95% CI) between RDW-SD and serum NSE levels were 0.32 (0.21-0.42, p<0.001) and 0.26 (0.15-0.38, p<0.001), respectively, in AIS patients before and after adjusting for potential confounders. In conclusion, we found a significant positive association between RDW-SD and neuronal damage in AIS patients.
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Affiliation(s)
- Rong-Hua Hong
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jian Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jian Yuan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Pei Zhao
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Qing-Lei Fan
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jin Yang
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Bao-Guo Liu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China
| | - Jian Cai
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Baoshan Branch, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200444, China.,Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
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11
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Ding J, Zhu DS, Hong RH, Wu YF, Li ZZ, Zhou XJ, Cai J, Guan YT. The differential expression of natural killer cells in NMOSD and MS. J Clin Neurosci 2019; 71:9-14. [PMID: 31864829 DOI: 10.1016/j.jocn.2019.11.022] [Citation(s) in RCA: 13] [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: 07/19/2019] [Revised: 10/07/2019] [Accepted: 11/19/2019] [Indexed: 12/29/2022]
Abstract
Natural killer (NK) cells are involved in the pathogenesis of inflammatory demyelinating diseases of the central nervous system. However, the differential expressions of NK cells in the peripheral blood of patients with neuromyelitis optica spectrum disorders (NMOSD) and multiple sclerosis (MS) are unknown. This study aimed to explore the differential expressions of NK cells in NMOSD and MS and evaluate the clinical implications of this difference. We performed a cross-sectional study to investigate the expression of NK cells in the peripheral blood of patients with NMOSD (n = 78) and MS (n = 24) and of healthy controls (HC, n = 27). Furthermore, we investigated the relationship between NK cell level and disease phase in 102 patients with NMOSD and MS through Spearman correlation analysis and receiver operating characteristic (ROC) analysis. Our results showed that the median (interquartile range) NK cell levels in acute-phase NMOSD patients, remission-phase NMOSD patients, acute-phase MS patients, and HC subjects were 114.10 (64.75-153.38) cells/µL, 167.60 (116.35-266.15) cells/µL, 282.55 (140.57-368.20) cells/µL, and 221.00 (170.40-269.55) cells/µL, respectively (p < 0.001). The Spearman correlation coefficient (95%) for the relationship between NK level and disease phase in NMOSD patients was 0.366 (0.150-0.550) (p < 0.001). Furthermore, ROC analysis revealed that patients with NK cell values lower than 172.200 cells/µL were more prone to have acute-phase NMOSD than MS. In conclusion, the expression of NK cells in peripheral blood was lower in patients with NMOSD than in patients with MS in the acute phase, and a low expression of NK cells may suggest having acute-phase NMOSD rather than MS.
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Affiliation(s)
- Jie Ding
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Rong-Hua Hong
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yi-Fan Wu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jian Cai
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China.
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12
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Yu XX, Wang YH, Zhang HF, Zhu DS, Xiong Y, Zhang WB. Fabrication of a cost effective and broadband self-powered photodetector based on Sb 2Te 3 and silicon. Nanotechnology 2019; 30:345202. [PMID: 30840935 DOI: 10.1088/1361-6528/ab0d5c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The excellent conductive surface electronic states of topological insulators make them suitable candidates for the next generation optoelectronic devices. Moreover, their unique semiconducting properties are favorable for building heterojunctions with other semiconductors. Here, we fabricated a low cost and broadband self-powered photodetector based on Sb2Te3 and Si. The photolithography and thermal evaporation technique were combined to fabricate a series of asymmetric planar Sb2Te3 electrodes on the surface of an n-type silicon substrate. An obvious asymmetrical current voltage curve occurred under dark conditions, which is ascribed to the asymmetry of each electrode. During the photodetection test, self-powered photodetection was obtained upon 940 nm light irradiation. Moreover, the photodetector exhibited fast and broadband photodetection from 365 nm to 940 nm with a response time less than 40 ms.
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Affiliation(s)
- Xiang-Xiang Yu
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, People's Republic of China
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13
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Zhu DS, Yu L, Li M, Han L, Huang XX, Wang XQ, Yang XL, Zhu Y, Zhou XJ, Guan YT. High serum creatinine is associated with reduction of vision impaired in patients with NMOSD. J Neuroimmunol 2017; 310:32-37. [PMID: 28778442 DOI: 10.1016/j.jneuroim.2017.06.003] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/25/2017] [Accepted: 06/12/2017] [Indexed: 12/13/2022]
Abstract
Serum creatinine (SCR) has been found to be neuroprotective in neurodegenerative disease. However, whether SCR is a protective factor for vision impaired in neuromyelitis optica spectrum disorder (NMOSD) is unclear. This study to determine the relationship between SCR level and vision impaired in NMOSD patients through multivariate-adjusted linear regression analyses. Our result showed that high level of SCR was associated with a low occurrence of vision impaired, and the association was independent after adjustment for confounding risk factors and hierarchical analysis. Therefore, these results demonstrated that higher SCR level is a protective factor of vision impaired in male NMOSD patients.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Lu Yu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Mei Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Lu Han
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xin-Xin Huang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xiao-Qing Wang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai 200366, China
| | - Xiao-Li Yang
- Department of Neurology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai 200011, China
| | - Ying Zhu
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Xia-Jun Zhou
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of medicine, Shanghai Jiaotong University, Shanghai 200127, China.
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14
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Zhu DS, Yang XL, Lv HH, Bai CG, Yang PP, Li ZZ, Hao Y, Zhang Y, Guan YT. Seizure syndrome as a first manifestation of solitary tumor-like mass lesion of PACNS: Two case reports. Medicine (Baltimore) 2017; 96:e6018. [PMID: 28248859 PMCID: PMC5340432 DOI: 10.1097/md.0000000000006018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
RATIONALE Primary angiitis of the central nervous system (PACNS) is an inflammatory disease involving cerebrovascular and parenchymal, and solitary tumor-like mass lesion of PACNS (TLML-PACNS) is frequently misdiagnosed as neoplastic or other inflammatory diseases. However, seizure syndrome as a first manifestation of TLML-PACNS has rarely reported before. PATIENT CONCERNS Here, we report 2 cases of seizure syndrome, which was the first sign that presented prior to the diagnosis of TLML-PACNS by brain biopsy. DIAGNOSES A mass lesion in the white and gray matters was detected by magnetic resonance imaging. The pathology for leptomeningeal lesion biopsy observed a transmural inflammation of the artery, with T lymphocyte infiltration. Patients were diagnosed with PACNS and epileptic seizure by biopsy and electroencephalogram. INTERVENTIONS Patients were treated with glucocorticoid pulse therapy for 3 days, and subsequently oral prednisone was continued, in combination with immunosuppressant. OUTCOMES Luckily, both two patients were improved after treatment, and only mild cognitive impairment remained without adverse event. LESSONS Patient with mass lesion in CNS, which is similar to tumor, presented with seizure, headache, or cerebrovascular events without any other risk factors for stroke or tumor, should be considered the feasible with the disease of TLML-PACNS.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Xiao-Li Yang
- Department of Neurology, The Fifth People's Hospital of Shanghai, Fudan University
| | - Hui-Hui Lv
- Department of Neurology, Changhai Hospital, Second Military Medical University
| | - Chen-Guang Bai
- Department of Pathology, Changhai Hospital, Second Military Medical University
| | - Pang-Pan Yang
- Department of Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ze-Zhi Li
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yong Hao
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Ying Zhang
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Yang-Tai Guan
- Department of Neurology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
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15
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Zhu DS, Fu J, Zhang Y, Xie C, Wang XQ, Zhang Y, Yang J, Li SX, Liu XB, Wan ZW, Dong Q, Guan YT. Sensitivity and Specificity of Double-Track Sign in the Detection of Transverse Sinus Stenosis: A Multicenter Retrospective Study. PLoS One 2015; 10:e0135897. [PMID: 26291452 PMCID: PMC4546352 DOI: 10.1371/journal.pone.0135897] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/28/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Transverse sinus stenosis (TSS) is common among patients with cerebral venous sinus thrombosis. No previous studies have reported on double-track sign detected on axial Gd-enhanced T1WI in TSS. This study aimed to determine the sensitivity and specificity of the double-track sign in the detection of TSS. METHODS We retrospectively reviewed medical records of 383 patients with transverse sinus thrombosis (TST) and 30 patients with normal transverse sinus from 5 participating hospitals in china from January 2008 to June 2014. 167 feasible transverse sinuses included in this study were categorized into TSS (n = 76), transverse sinus occlusion (TSO) (n = 52) and transverse sinus normal (TSN) groups (n = 39) according to imaging diagnosis on digital subtraction angiography (DSA) or magnetic resonance venography (MRV). Double-track sign on axial Gd-enhanced T1WI was compared among the three groups. Sensitivity and specificity of double-track sign in detection of TSS were calculated, with final imaging diagnosis of TSS on DSA or MRV as the reference standard. RESULTS Of 383 patients with TST recruited over a 6.5-year period, 128 patients were enrolled in the study, 255 patients were excluded because of insufficient clinical data, imaging finding and delay time, and 30 matched patients with normal transverse sinus were enrolled in the control group. Therefore, double-track sign assessment was conducted in 167 available transverse sinuses of 158 patients. Of the 76 sinuses in TSS group, 51 had double-track sign. Of the other 91 sinuses in TSO and TSN groups, 3 had a false-positive double-track sign. Thus, double-track sign on axial Gd-enhanced T1WI was 67.1% (95% CI 55.3-77.2) sensitive and 96.7% (95% CI 89.9-99.1) specific for detection of TSS. CONCLUSIONS The double-track sign on axial Gd-enhanced T1WI is highly specific and moderate sensitive for detection of TSS. Nevertheless, it could be a direct sign and might provide an early clue for TSS.
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Affiliation(s)
- De-Sheng Zhu
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jue Fu
- Department of Pathology, Fuzhou Medical College, Nanchang University, Fuzhou, China
| | - Yi Zhang
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chong Xie
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiao-Qing Wang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yue Zhang
- Department of Neurology, Nanyuan Hospital, Beijing, China
| | - Jie Yang
- Department of Neurology, Dong Fang Hospital, School of medicine, Tong Ji University, Shanghai, China
| | - Shi-Xu Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiao-Bei Liu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zhi-Wen Wan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
- * E-mail: ,
| | - Yang-Tai Guan
- Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: ,
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16
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Han Y, Lv HH, Liu X, Dong Q, Yang XL, Li SX, Wu S, Jiang JM, Luo Z, Zhu DS, Zhang Y, Zheng Y, Guan YT, Xu JF. Influence of Genetic Polymorphisms on Clopidogrel Response and Clinical Outcomes in Patients with Acute Ischemic Stroke CYP2C19 Genotype on Clopidogrel Response. CNS Neurosci Ther 2015; 21:692-7. [PMID: 26177117 DOI: 10.1111/cns.12426] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/25/2015] [Accepted: 05/25/2015] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVES This study sought to evaluate the influence of the genetic polymorphisms on platelet reactivity and clinical outcomes in acute ischemic stroke patients taking clopidogrel. BACKGROUND Little research has been published on relationships between genetic polymorphisms, platelet reactivity, and clinical outcomes in stroke patients treated with clopidogrel. METHODS Patients hospitalized in Changhai Hospital with acute ischemic stroke were randomly enrolled into treatment with a 75-mg daily maintenance dose of clopidogrel. Genotyping was detected by the MassARRAY iPLEX genotyping system (Sequenom Inc, San Diego, CA), and platelet reactivity was evaluated by the VerifyNow P2Y12 test (Accumetrics Inc., San Diego, CA). Sixteen single nucleotide polymorphisms (SNPs) within 9 genes were selected and high on-clopidogrel platelet reactivity (HPR) was defined as P2Y12 reaction units (PRU) value ≥230. The primary endpoint was ischemic events, including major adverse cardiac events (MACE), recurrence of stroke, transient ischemic attack (TIA), and the composite of vascular death, and the secondary endpoint was bleeding. RESULTS Of the 345 patients recruited, 275 (79.7%) patients were followed up for 1 year and 122 (35.4%) patients were categorized as HPR. Among the SNPs selected, only the CYP2C19*2 allele and the CYP2C19*3 allele were statistically significantly associated with PRU (P < 0.001 and P = 0.003, respectively). Similarly, the prevalence of HPR was associated with CYP2C19*2 and CYP2C19*3 (P < 0.001 and P = 0.001, respectively). During the 1 year of follow-up, a total of 64 (23.3%) cases of clinical events occurred, including 60 ischemic events and 4 bleeding events. There were no correlation between CYP2C19 variant alleles and clinical outcomes (P > 0.05), but a statistically significant relevance was found between the HPR and the ischemic events in 1 year of follow-up (P = 0.001). CONCLUSIONS CYP2C19*2 and CYP2C19*3 had a significant impact on clopidogrel response, but was not associated with ischemic events during 1 year of follow-up in patients with acute ischemic stroke. HPR was an independent risk factor for ischemic events, and the VerifyNow P2Y12 test may be available to guide individualized antiplatelet therapies in stroke patients in China.
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Affiliation(s)
- Yan Han
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Hui-Hui Lv
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xu Liu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China
| | - Qiang Dong
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao-Li Yang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Shi-Xu Li
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Shuai Wu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jian-Ming Jiang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Zheng Luo
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - De-Sheng Zhu
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yi Zhang
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yi Zheng
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yang-Tai Guan
- Department of Neurology, Changhai Hospital, Second Military Medical University, Shanghai, China.,Department of Neurology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jian-Feng Xu
- State Key Laboratory of Genetic Engineering and Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Center for Genetic Epidemiology, School of Life Sciences, Fudan University, Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, Shanghai, China.,Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, IL, USA
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17
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Li S, Zheng R, Chen SJ, Zhu DS, Fan QC. Theoretical study on the ground electronic state of FO(+) and FO(-). Spectrochim Acta A Mol Biomol Spectrosc 2014; 133:735-740. [PMID: 24996216 DOI: 10.1016/j.saa.2014.06.061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 05/23/2014] [Accepted: 06/08/2014] [Indexed: 06/03/2023]
Abstract
The equilibrium structures of the ground electronic states for molecular ions FO(+) and FO(-) have been calculated by using the multi-reference configuration interaction method in combination with the augmented correlation-consistent basis sets up through sextuple zeta quality. The equilibrium parameters, potential energy curves and spectroscopic constants are derived for both species. The extrapolation schemes are adopted to estimate the complete basis set limit. The corrections of core-valence correlation and relativistic effect are included to improve the accuracy of the calculations. The vibrational energy levels as well as rotational and centrifugal distortion constants of the ground electronic states for both systems are obtained by solving the radial Schrödinger equation of nuclear motion. The computations on neutral FO radical are also carried out to investigate the ionization potentials and the electron affinities.
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Affiliation(s)
- Song Li
- College of Physical Science and Technology, Yangtze University, Jingzhou 434023, China.
| | - Rui Zheng
- School of Mathematics and Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450011, China
| | - Shan-Jun Chen
- College of Physical Science and Technology, Yangtze University, Jingzhou 434023, China
| | - De-Sheng Zhu
- College of Physical Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Qun-Chao Fan
- School of Physics and Chemistry, Research Center for Advanced Computation, Xihua University, Chengdu 610039, China
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18
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Zhu DS, Fu J, Zhang Y, Li SX, Zhang GX, Guan YT, Dong Q. Neurological antiphospholipid syndrome: Clinical, neuroimaging, and pathological characteristics. J Neurol Sci 2014; 346:138-44. [DOI: 10.1016/j.jns.2014.08.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 07/24/2014] [Accepted: 08/04/2014] [Indexed: 10/24/2022]
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19
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Sun L, Chen C, Jiang B, Li Y, Deng Q, Sun M, An X, Yang X, Yang Y, Zhang R, Lu Y, Zhu DS, Huo Y, Feng GS, Zhang Y, Luo J. Grb2-associated binder 1 is essential for cardioprotection against ischemia/reperfusion injury. Basic Res Cardiol 2014; 109:420. [PMID: 24951957 DOI: 10.1007/s00395-014-0420-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 05/30/2014] [Accepted: 05/30/2014] [Indexed: 12/20/2022]
Abstract
We have shown recently that endothelial Grb-2-associated binder 1 (Gab1), an intracellular scaffolding adaptor, has a protective effect against limb ischemia via mediating angiogenic signaling pathways. However, the role of Gab1 in cardiac ischemia/reperfusion (I/R) injury remains unknown. In this study, we show that Gab1 is required for cardioprotection against I/R injury. I/R injury led to remarkable phosphorylation of Gab1 in cardiomyocytes. Compared with controls, the mice with cardiomyocyte-specific deletion of Gab1 gene (CGKO mice) exhibited an increase in infarct size and a decrease in cardiac function after I/R injury. Consistently, in hearts of CGKO mice subjected to I/R, the activation of caspase 3 and myocardial apoptosis was markedly enhanced whereas the activation of protein kinase B (Akt) and mitogen-activated protein kinase (MAPK), which are critical for cardiomyocyte survival, was attenuated. Oxidative stress is regarded as a major contributor to myocardial I/R injury. To examine the role of Gab1 in oxidative stress directly, isolated adult cardiomyocytes were subject to oxidant hydrogen peroxide and the cardioprotective effects of Gab1 were confirmed. Furthermore, we found that the phosphorylation of Gab1 and Gab1-mediated activation of Akt and MAPK by oxidative stress was suppressed by ErbB receptor and Src kinase inhibitors, accompanied by an increase in apoptotic cell death. In conclusion, our results suggest that Gab1 is essential for cardioprotection against I/R oxidative injury via mediating survival signaling.
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Affiliation(s)
- Lulu Sun
- Laboratory of Vascular Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, 100871, China
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Wang XL, Wu Y, Tan LB, Tian Z, Liu JH, Zhu DS, Zeng SM. Follicle-stimulating hormone regulates pro-apoptotic protein Bcl-2-interacting mediator of cell death-extra long (BimEL)-induced porcine granulosa cell apoptosis. J Biol Chem 2012; 287:10166-10177. [PMID: 22235114 DOI: 10.1074/jbc.m111.293274] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The pro-apoptotic protein Bim (B-cell lymphoma-2 (Bcl-2)-interacting modulator of cell death) has recently been identified and shown to promote cell death in response to several stimuli. In this report, we investigated the role of Bim in porcine follicular atresia. Initially, Bim cDNA was cloned and characterized from porcine ovarian tissue. Porcine Bim had three alternative splicing variants (Bim-extra long, Bim-long, and Bim-short), all containing the consensus Bcl-2 homology 3 domain. We then found the Bim-extra long (Bim(EL)) protein, the most abundant isoform of Bim, was strongly expressed and co-localized with apoptotic (TUNEL-positive) granulosa cells from porcine atretic follicles. Furthermore, overexpression of Bim(EL) triggered apoptosis in granulosa cells. In primary granulosa cell cultures under basal conditions, we observed that Bim(EL) expression was dampened by treatment with follicle-stimulating hormone (FSH). The role of the PI3K/Akt pathway in the regulation of repression was clarified by the use of the PI3K inhibitor, LY294002, and by transfection with Akt siRNA. Forkhead Box Protein O3a (FoxO3a), a well defined transcriptional activator of Bim, was phosphorylated at Ser-253 and inactivated after FSH stimulation. Also, FSH abolished FoxO3a nuclear accumulation in response to LY294002. Finally, chromatin immunoprecipitation assays demonstrated that FoxO3a directly bound and activated the bim promoter. Taken together, we conclude that Bim(EL) induces porcine granulosa cell apoptosis during follicular atresia, and its expression is regulated by FSH via the PI3K/Akt/FoxO3a pathway.
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Affiliation(s)
- Xian-Long Wang
- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing 100193 and
| | - Yi Wu
- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing 100193 and
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- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing 100193 and
| | - Zhen Tian
- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing 100193 and
| | - Jing-Hao Liu
- Laboratory Animal Centre, Peking University, Beijing 100871, China
| | - De-Sheng Zhu
- Laboratory Animal Centre, Peking University, Beijing 100871, China
| | - Shen-Ming Zeng
- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing 100193 and.
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Gao JW, Zheng RT, Ohtani H, Zhu DS, Chen G. Experimental investigation of heat conduction mechanisms in nanofluids. Clue on clustering. Nano Lett 2009; 9:4128-32. [PMID: 19995084 DOI: 10.1021/nl902358m] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Heat conduction mechanisms in nanofluids, fluids seeded with nanoparticles, have been extensively scrutinized in the past decades to explain some experimental observations of their enhanced thermal conductivity beyond the effective medium theory. Although many mechanisms such as Brownian motion, clustering, ballistic transport, and internanoparticle potential are speculated, experimental proof of any of the mechanisms has been difficult. Here, we investigate the mechanisms experimentally by thermal conductivity measurements and structural analysis for the same materials in both liquid and solid states. These studies strongly suggest that clustering holds the key to the thermal conductivity enhancement of nanofluids.
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Affiliation(s)
- J W Gao
- Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, People's Republic of China
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Schwab AP, Zhu DS, Banks MK. Influence of organic acids on the transport of heavy metals in soil. Chemosphere 2008; 72:986-994. [PMID: 18482743 DOI: 10.1016/j.chemosphere.2008.02.047] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2007] [Revised: 02/19/2008] [Accepted: 02/22/2008] [Indexed: 05/26/2023]
Abstract
Vegetation historically has been an important part of reclamation of sites contaminated with metals, whether the objective was to stabilize the metals or remove them through phytoremediation. Understanding the impact of organic acids typically found in the rhizosphere would contribute to our knowledge of the impact of plants in contaminated environments. Heavy metal transport in soils in the presence of simple organic acids was assessed in two laboratory studies. In the first study, thin layer chromatography (TLC) was used to investigate Zn, Cd, and Pb movement in a sandy loam soil as affected by soluble organic acids in the rhizosphere. Many of these organic acids enhanced heavy metal movement. For organic acid concentrations of 10mM, citric acid had the highest R(f) values (frontal distance moved by metal divided by frontal distance moved by the solution) for Zn, followed by malic, tartaric, fumaric, and glutaric acids. Citric acid also has the highest R(f) value for Cd movement followed by fumaric acid. Citric acid and tartaric acid enhanced Pb transport to the greatest degree. For most organic acids studied, R(f) values followed the trend Zn>Cd>Pb. Citric acid (10mM) increased R(f) values of Zn and Cd by approximately three times relative to water. In the second study, small soil columns were used to test the impact of simple organic acids on Zn, Cd, and Pb leaching in soils. Citric acid greatly enhanced Zn and Cd movement in soils but had little influence on Pb movement. The Zn and Cd in the effluents from columns treated with 10mM citric acid attained influent metal concentrations by the end of the experiment, but effluent metal concentrations were much less than influent concentrations for citrate <10mM. Exchangeable Zn in the soil columns was about 40% of total Zn, and approximately 80% total Cd was in exchangeable form. Nearly all of the Pb retained by the soil columns was exchangeable.
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Affiliation(s)
- A P Schwab
- Department of Agronomy, Purdue University, West Lafayette, IN 47907, United States
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Chen XJ, Zhu DS, Li B, Ling T, Wu ZK. Fast photorefractive response in strongly reduced near-stoichiometric LiNbO(3) crystals. Opt Lett 2001; 26:998-1000. [PMID: 18040513 DOI: 10.1364/ol.26.000998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The photorefractive response time of LiNbO(3) crystal is of the order of minutes, and such a long response time limits the crystal's practical applications. We report the photorefractive properties of nominally pure near-stoichiometric LiNbO(3) crystal that is strongly reduced in vacuum. A short photorefractive response time of the order of 100 ms is measured at a wavelength of 514.5 nm, with incident light intensity of 1.6 W/cm (2) , and possible corresponding mechanisms are discussed. To our knowledge this is the first experimental evidence of a subsecond photorefractive response in pure LiNbO(3) crystals. The diffraction efficiency of a holographic grating written in this reduced crystal is low but can be enhanced by an externally applied electric field.
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Zhu DS. [Measurement of angiotensin-converting enzyme in lung diseases]. Zhonghua Jie He He Hu Xi Xi Ji Bing Za Zhi 1984; 7:15-7. [PMID: 6088189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Zhu DS. [Histochemical study of IUD smears]. Zhonghua Fu Chan Ke Za Zhi 1982; 17:171-3. [PMID: 7172861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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