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Zhu L, Pei Z, Dang G, Shi X, Su X, Lan X, Lian C, Yan N, Guo Y. Predicting response to repetitive transcranial magnetic stimulation in patients with chronic insomnia disorder using electroencephalography: A pilot study. Brain Res Bull 2024; 206:110851. [PMID: 38141788 DOI: 10.1016/j.brainresbull.2023.110851] [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: 08/07/2023] [Revised: 11/30/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Predicting responsvienss to repetitive transcranial magnetic stimulation (rTMS) can facilitate personalized treatments with improved efficacy; however, predictive features related to this response are still lacking. We explored whether resting-state electroencephalography (rsEEG) functional connectivity measured at baseline or during treatment could predict the response to 10-day rTMS targeted to the right dorsolateral prefrontal cortex (DLPFC) in 36 patients with chronic insomnia disorder (CID). Pre- and post-treatment rsEEG scans and the Pittsburgh Sleep Quality Index (PSQI) were evaluated, with an additional rsEEG scan conducted after four rTMS sessions. Machine-learning approaches were employed to assess the ability of each connectivity measure to distinguish between responders (PSQI improvement > 25%) and non-responders (PSQI improvement ≤ 25%). Furthermore, we analyzed the connectivity trends of the two subgroups throughout the treatment. Our results revealed that the machine learning model based on baseline theta connectivity achieved the highest accuracy (AUC = 0.843) in predicting treatment response. Decreased baseline connectivity at the stimulated site was associated with higher responsiveness to TMS, emphasizing the significance of functional connectivity characteristics in rTMS treatment. These findings enhance the clinical application of EEG functional connectivity markers in predicting treatment outcomes.
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Affiliation(s)
- Lin Zhu
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Zian Pei
- Shenzhen Bay Laboratory, Shenzhen 518020, Guangdong, China
| | - Ge Dang
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xue Shi
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xiaolin Su
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xiaoyong Lan
- Shenzhen Bay Laboratory, Shenzhen 518020, Guangdong, China
| | - Chongyuan Lian
- Shenzhen Bay Laboratory, Shenzhen 518020, Guangdong, China
| | - Nan Yan
- CAS Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yi Guo
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China; Shenzhen Bay Laboratory, Shenzhen 518020, Guangdong, China.
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Zhu L, Dang G, Wu W, Zhou J, Shi X, Su X, Ren H, Pei Z, Lan X, Lian C, Xie P, Guo Y. Functional connectivity changes are correlated with sleep improvement in chronic insomnia patients after rTMS treatment. Front Neurosci 2023; 17:1135995. [PMID: 37139515 PMCID: PMC10149758 DOI: 10.3389/fnins.2023.1135995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/28/2023] [Indexed: 05/05/2023] Open
Abstract
Background Repetitive transcranial magnetic stimulation (rTMS) has been increasingly used as a treatment modality for chronic insomnia disorder (CID). However, our understanding of the mechanisms underlying the efficacy of rTMS is limited. Objective This study aimed to investigate rTMS-induced alterations in resting-state functional connectivity and to find potential connectivity biomarkers for predicting and tracking clinical outcomes after rTMS. Methods Thirty-seven patients with CID received a 10-session low frequency rTMS treatment applied to the right dorsolateral prefrontal cortex. Before and after treatment, the patients underwent resting-state electroencephalography recordings and a sleep quality assessment using the Pittsburgh Sleep Quality Index (PSQI). Results After treatment, rTMS significantly increased the connectivity of 34 connectomes in the lower alpha frequency band (8-10 Hz). Additionally, alterations in functional connectivity between the left insula and the left inferior eye junction, as well as between the left insula and medial prefrontal cortex, were associated with a decrease in PSQI score. Further, the correlation between the functional connectivity and PSQI persisted 1 month after the completion of rTMS as evidenced by subsequent electroencephalography (EEG) recordings and the PSQI assessment. Conclusion Based on these results, we established a link between alterations in functional connectivity and clinical outcomes of rTMS, which suggested that EEG-derived functional connectivity changes were associated with clinical improvement of rTMS in treating CID. These findings provide preliminary evidence that rTMS may improve insomnia symptoms by modifying functional connectivity, which can be used to inform prospective clinical trials and potentially for treatment optimization.
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Affiliation(s)
- Lin Zhu
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Ge Dang
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Wei Wu
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, United States
| | - Junhong Zhou
- Hebrew Seniorlife, Hinda and Arthur Marcus Institute for Aging Research, Harvard Medical School, Boston, MA, United States
| | - Xue Shi
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Xiaolin Su
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Huixia Ren
- Department of Geriatrics, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Zian Pei
- Shenzhen Bay Laboratory, Shenzhen, Guangdong, China
| | - Xiaoyong Lan
- Shenzhen Bay Laboratory, Shenzhen, Guangdong, China
| | | | - Peng Xie
- NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi Guo
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, Guangdong, China
- Shenzhen Bay Laboratory, Shenzhen, Guangdong, China
- *Correspondence: Yi Guo,
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Zhang X, Ren H, Pei Z, Lian C, Su X, Lan X, Chen C, Lei Y, Li B, Guo Y. Dual-targeted repetitive transcranial magnetic stimulation modulates brain functional network connectivity to improve cognition in mild cognitive impairment patients. Front Physiol 2022; 13:1066290. [PMID: 36467674 PMCID: PMC9716076 DOI: 10.3389/fphys.2022.1066290] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/07/2022] [Indexed: 10/15/2023] Open
Abstract
Background: Mild cognitive impairment (MCI) is a condition between normal aging and dementia; nearly 10-15% of MCI patients develop dementia annually. There are no effective interventions for MCI progression. Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique that has attempted to improve the overall cognitive function of MCI patients. However, it does not affect episodic memory improvement. Methods: In this study, we engaged 15 clinically diagnosed MCI patients and normal controls to explore the effect of dual-targeted rTMS on progressing cognitive function, particularly episodic memory in MCI patients. Resting-state EEG recordings and neuropsychological assessments were conducted before and after the intervention. EEG features were extracted using an adaptive algorithm to calculate functional connectivity alterations in relevant brain regions and the mechanisms of altered brain functional networks in response to dual-target rTMS. Results: The study revealed that the functional brain connectivity between the right posterior cingulate gyrus (PCC) and the right dorsal caudate nucleus (DC) was significantly reduced in MCI patients compared to normal controls (p < 0.001). Dual-target rTMS increased the strength of the reduced functional connectivity (p < 0.001), which was related to cognitive enhancement (p < 0.05). Conclusion: This study provides a new stimulation protocol for rTMS intervention. Improving the functional connectivity of the right PCC to the right DC is a possible mechanism by which rTMS improves overall cognitive and memory function in MCI patients.
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Affiliation(s)
- Xinqi Zhang
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Huixia Ren
- Department of Geriatrics, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
| | - Zian Pei
- Shenzhen Bay Laboratory, Institute of Neurological Disease, Shenzhen, China
| | - Chongyuan Lian
- Shenzhen Bay Laboratory, Institute of Neurological Disease, Shenzhen, China
| | - XiaoLin Su
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Xiaoyong Lan
- Shenzhen Bay Laboratory, Institute of Neurological Disease, Shenzhen, China
| | - Chanjuan Chen
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - YuHua Lei
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Baima Li
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Yi Guo
- Department of Neurology, Shenzhen People’s Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
- Shenzhen Bay Laboratory, Institute of Neurological Disease, Shenzhen, China
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Wan G, DeSimone M, Liu F, Nguyen N, Leung B, Choi M, Bruce A, Stagner A, Lian C, Russell-Goldman E, Jiao M, Zhen D, Zhao J, Gil J, Németh I, Marko-Varga G, Kwatra S, Yu K, Semenov Y. 649 CNN-based histopathology image analysis for early-stage melanoma recurrence. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Benson T, Zhan Q, Crouch J, Lian C, Smith N, Kupper T, Villani A, Wells M, Teague J, Gehad A, Gerard N, Clark R. 820 Have FOXP3, will travel: Human treg preferentially recirculate and suppress the activation of skin resident effector T cells. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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He S, Wu J, Lian C, Gach H, Mutic S, Bosch W, Michalski J, Li H. An Adaptive Low-Rank Modeling-Based Active Learning Method for Medical Image Annotation. Ing Rech Biomed 2021; 42:334-344. [PMID: 34934476 PMCID: PMC8687126 DOI: 10.1016/j.irbm.2020.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Active learning is an effective solution to interactively select a limited number of informative examples and use them to train a learning algorithm that can achieve its optimal performance for specific tasks. It is suitable for medical image applications in which unlabeled data are abundant but manual annotation could be very time-consuming and expensive. However, designing an effective active learning strategy for informative example selection is a challenging task, due to the intrinsic presence of noise in medical images, the large number of images, and the variety of imaging modalities. In this study, a novel low-rank modeling-based multi-label active learning (LRMMAL) method is developed to address these challenges and select informative examples for training a classifier to achieve the optimal performance. The proposed method independently quantifies image noise and integrates it with other measures to guide a pool-based sampling process to determine the most informative examples for training a classifier. In addition, an automatic adaptive cross entropy-based parameter determination scheme is proposed for further optimizing the example sampling strategy. Experimental results on varied medical image datasets and comparisons with other state-of-the-art multi-label active learning methods illustrate the superior performance of the proposed method.
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Affiliation(s)
- S. He
- Department of Computer Science, Washington University, St. Louis, MO, USA
| | - J. Wu
- Department of Radiation Oncology, Washington University, St. Louis, MO, USA
| | - C. Lian
- Department of Radiology, The University of North Carolina at Chapel Hill, NC, USA
| | - H.M. Gach
- Department of Radiation Oncology, Washington University, St. Louis, MO, USA
| | - S. Mutic
- Department of Radiation Oncology, Washington University, St. Louis, MO, USA
| | - W. Bosch
- Department of Radiation Oncology, Washington University, St. Louis, MO, USA
| | - J. Michalski
- Department of Radiation Oncology, Washington University, St. Louis, MO, USA
| | - H. Li
- Department of BioEngineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Carle Cancer Center, Carle Foundation Hospital, Urbana, IL, USA
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7
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Lian C, Liu S, Li X, Du ZH. The diagnosis process of Collet-Sicard syndrome caused by skull base fracture: A case report. Neurología (English Edition) 2021; 36:649-651. [DOI: 10.1016/j.nrleng.2020.11.009] [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] [Received: 10/15/2020] [Accepted: 11/02/2020] [Indexed: 11/25/2022] Open
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8
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Lian C, Liu S, Li X, Du ZH. The diagnosis process of Collet-Sicard syndrome caused by skull base fracture: A case report. Neurologia 2020; 36:S0213-4853(20)30422-9. [PMID: 33309200 DOI: 10.1016/j.nrl.2020.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 10/28/2020] [Accepted: 11/02/2020] [Indexed: 11/30/2022] Open
Affiliation(s)
- C Lian
- Department of Acupuncture, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - S Liu
- Department of Acupuncture, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - X Li
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Z-H Du
- Department of Acupuncture, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China.
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Cui J, Wang JS, Wang SM, Lian C, Qiu JC, Liu Z. [microRNA-106a-5p regulated the funcation human umbilical vein endothelial cells by targeting STAT3]. Zhonghua Yi Xue Za Zhi 2020; 99:3814-3818. [PMID: 31874520 DOI: 10.3760/cma.j.issn.0376-2491.2019.48.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of miR-106a-5p on the proliferation and migration of vascular endothelial cells, and the possible target gene of miR-106a-5p in endothelial cells. Methods: Human umbilical vein endothelial cells (HUVEC) were cultured in vitro, and the expression of mir-106a-5p in HUVECs was detected by real-time fluorescent quantitative polymerase chain reaction (RT-qPCR). Cell counting kit-8 (CCK-8) and wound healing assays were used to detected the proliferation and migration of HUVECs respectively.Dual luciferase repoter assay was used to identify the possible target gene of miR-106a-5p--STAT3. Results: mir-106a-5p inhibited the proliferation function of HUVECs (F=13.62, P<0.01). And mir-106a-5p expressed the migration of HUVEC,the closure rate in the mimic group was reduced after 12 h and 24 h of scratching (49.93/31.31) (χ(2)=8.240, P<0.05), (78.87/44.80) (χ(2)=10.50, P<0.01). The direct target gene of mir-106a-5p was STAT3, and miR-106a-5p regulated the expression of STAT3 through post-transcriptionally controlling. Conclusion: mir-106a-5p could inhibit proliferation and migration of HUVEC, and the possible target gene was STAT3.
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Affiliation(s)
- J Cui
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - J S Wang
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - S M Wang
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - C Lian
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - J C Qiu
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Z Liu
- Department of Vascular Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
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Wang L, Li P, Tian Y, Li Z, Lian C, Ou Q, Jin C, Gao F, Xu JY, Wang J, Wang F, Zhang J, Zhang J, Li W, Tian H, Lu L, Xu GT. Human Umbilical Cord Mesenchymal Stem Cells: Subpopulations and Their Difference in Cell Biology and Effects on Retinal Degeneration in RCS Rats. Curr Mol Med 2019; 17:421-435. [PMID: 29210653 DOI: 10.2174/1566524018666171205140806] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 11/08/2017] [Accepted: 11/29/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Human umbilical cord mesenchymal stem cells (hUC-MSCs) are potential candidates for treating retinal degeneration (RD). OBJECTIVE To further study the biology and therapeutic effects of the hUC-MSCs on retinal degeneration. METHODS Two hUC-MSC subpopulations, termed hUC-MSC1 and hUC-MSC2, were isolated by single-cell cloning method and their therapeutic functions were compared in RCS rat, a RD model. RESULTS Although both subsets satisfied the basic requirements for hUC-MSCs, they were significantly different in morphology, proliferation rate, differentiation capacity, phenotype and gene expression. Furthermore, only the smaller, fibroblast-like, faster growing subset hUC-MSC1 displayed stronger colony forming potential as well as adipogenic and osteogenic differentiation capacities. When the two subsets were respectively transplanted into the subretinal spaces of RCS rats, both subsets survived, but only hUC-MSC1 expressed RPE cell markers Bestrophin and RPE65. More importantly, hUC-MSC1 showed stronger rescue effect on the retinal function as indicated by the higher b-wave amplitude on ERG examination, thicker retinal nuclear layer, and decreased apoptotic photoreceptors. When both subsets were treated with interleukin-6, mimicking the inflammatory environment when the cells were transplanted into the eyes with degenerated retina, hUC-MSC1 expressed much higher levels of trophic factors in comparison with hUC-MSC2. CONCLUSION The data here, in addition to prove the heterogeneity of hUC-MSCs, confirmed that the stronger therapeutic effects of hUC-MSC1 were attributed to its stronger anti-apoptotic effect, paracrine of trophic factors and potential RPE cell differentiation capacity. Thus, the subset hUC-MSC1, not the other subset or the ungrouped hUC-MSCs should be used for effective treatment of RD.
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Affiliation(s)
- L Wang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China
| | - P Li
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - Y Tian
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - Z Li
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - C Lian
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - Q Ou
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - C Jin
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - F Gao
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - J-Y Xu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - J Wang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - F Wang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China
| | - J Zhang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - J Zhang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - W Li
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - H Tian
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - L Lu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - G-T Xu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
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11
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Lou H, Kang D, Yang Q, Lian C, Zhang C, Li Z, Tian H, Lu L, Xu GT, Xu G, Zhang J. Erythropoietin Protects Retina Against Ceramide 2-Induced Damage in Rat. Curr Mol Med 2019; 17:699-706. [PMID: 29577857 DOI: 10.2174/1566524018666180322161252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 03/10/2018] [Accepted: 03/02/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ceramide plays critical roles in cell proliferation, senescence and apoptosis, and is implicated in neurodegenerative diseases, etc. To clarify if ceramide plays some roles in retinal diseases, we established in vivo and in vitro retinal injury models with ceramide 2 (C2) treatment. In addition, Erythropoietin (EPO), which showed protective effects on retinal cells and blood-retinal barrier (BRB), was also tested for its protection and possible mechanism(s) in these models. METHODS Male Sprague-Dawley rats were divided into four groups, i.e., normal control, vehicle control, C2 treatment, and C2+EPO treatment. After intravitreal injection, the rats were examined for eye fundus, electroretinogram, histological study, and immunostaining, etc. In vitro, retinal neuronal cell line (R28) and the primary human retinal microvascular endothelial cells (HRMECs) were treated with C2, cell viability assay, transendothelial electrical resistance (TEER) and BRB-related molecules were studied to test the protective effect of EPO. RESULTS Intravitreal C2-treatment caused significant vision loss in rats, as reflected by reduced b-wave amplitude, increased TUNEL positive cells and GFAP immunostaining in retina. Another major retinal injury observed was BRB breakdown following C2- treatment. Such C2-induced injuries were further confirmed by in vitro study. When HRMECs were treated with C2, the TEER was significantly reduced. The mechanisms for C2 to induce such injuries might be through evidently increased expressions of the related molecules like plasmalemma vesicle-associated protein (PLVAP or PV-1), ecto- 5'-nucleotidase (CD73) and intercellular adhesion molecule-1 (ICAM-1), as observed in C2-treated R28 cells. All these injuries induced by C2 were significantly prevented by EPO both in vivo and in vitro, and its protective mechanisms here might be, in addition to neuroprotective, closely related to its maintenance of BRB integrity, through reducing the expressions of PV-1, CD73 and ICAM-1. CONCLUSION C2 could induce severe retinal injury, and such injuries could be effectively prevented by EPO treatment.
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Affiliation(s)
- H Lou
- Department of Ophthalmology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - D Kang
- Department of Ophthalmology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Ophthalmology, The Children00000010s Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Q Yang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - C Lian
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - C Zhang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - Z Li
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China
| | - H Tian
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China.,Translational Medical Center for Stem Cell Therapy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai, China
| | - L Lu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China.,Translational Medical Center for Stem Cell Therapy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai, China
| | - G-T Xu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China.,Translational Medical Center for Stem Cell Therapy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai, China.,Department of Physiology and Pharmacology, Tongji University School of Medicine, Shanghai, China
| | - G Xu
- Department of Ophthalmology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - J Zhang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Regenerative Medicine and Stem Cell Research Center, Tongji University School of Medicine, Shanghai, China.,Department of Physiology and Pharmacology, Tongji University School of Medicine, Shanghai, China.,Department of Ophthalmology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Zhang J, Wang J, Zheng L, Wang M, Lu Y, Li Z, Lian C, Mao S, Hou X, Li S, Xu J, Tian H, Jin C, Gao F, Zhang J, Wang F, Li W, Lu L, Xu GT. miR-25 Mediates Retinal Degeneration Via Inhibiting ITGAV and PEDF in Rat. Curr Mol Med 2019; 17:359-374. [PMID: 29210651 DOI: 10.2174/1566524018666171205122540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 11/06/2017] [Accepted: 11/28/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Age-related macular degeneration (AMD) is the main cause of irreversible blindness in the elderly. Oxidative stress in retinal pigment epithelium (RPE) is deemed to play a pivotal role in the pathogenesis of AMD. miR-25 functions as an essential modulator in response to oxidative-stress in several cell types, but its function in RPE cells is poorly understood. OBJECTIVE To explore the roles of miR-25 in RPE cells and in the development of AMD. METHODS A rat model of retinal degeneration was induced by sodium iodate (SI). Subretinal injection of antagomiR-25 was performed for the intervention while the scramble as control. Visual responses were recorded with Electroretinogram (ERG). TUNEL assay was performed to detect apoptosis. Phagosome quantification in vivo was performed to evaluate RPE cell function. Oxygen-glucose deprivation treatment was performed to mimic in vitro oxidative stress. Gene expression at mRNA level and protein level were performed by quantitative polymerase chain reaction (qPCR) and Western Blot, respectively. The pigment epithelium derived factor (PEDF) level in the cultured medium was measured by Enzyme-linked immunosorbent assay (ELISA). The interaction between miR-25 and integrin αV (IGTAV) / PEDF 3'UTR was examined by dual luciferase assay. Chromatin immunoprecipitation (ChIP) assay was performed to examine its transcriptional regulation of miR-25. RESULTS Oxidative stress up-regulated miR-25 in RPE cells in very early stage, accompanied by decreased phagocytosis and reduced growth factor secretion in those cells. Such changes preceded RPE cell apoptosis and visual impairment in the SItreated rats. Furthermore, antagomiR-25 intervention effectively rescued RPE cells from degeneration in such model. The increased miR-25 was confirmed to mediate RPE degeneration through direct targeting IGTAV and PEDF. On the other hand, upstream, miR-25 was found to be up-regulated by STAT3 signaling under oxidative stress in both in vivo and in vitro models. CONCLUSION Our findings demonstrate that, in SI-treated rats, oxidative stress activates STAT3 signaling which up-regulates miR-25 expression, in a very early stage. The increased miR-25 then inhibits ITGAV and PEDF expressions, resulting in RPE phagocytosis dysfunction and then RPE apoptosis and visual impairment as observed in patients with AMD. These findings lead us to a better understanding of AMD pathogenesis, and suggest that miR-25 could be a potential therapeutic target for oxidative stress related RPE diseases, like AMD.
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Affiliation(s)
- J Zhang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai. China
| | - J Wang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai. China
| | - L Zheng
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - M Wang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - Y Lu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - Z Li
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - C Lian
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - S Mao
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - X Hou
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - S Li
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - J Xu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - H Tian
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - C Jin
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - F Gao
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - J Zhang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - F Wang
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - W Li
- Department of Ophthalmology, Drexel University College of Medicine, Philadelphia, PA. United States
| | - L Lu
- Laboratory of Clinical Visual Science, Department of Regenerative Medicine, and Stem Cell Research Center, Tongji University School of Medicine, Shanghai. China
| | - G-T Xu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai. China
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Hsieh P, Romar G, Wells M, Foreman R, Lian C, Divito S. LB1510 Insights into GVHD-associated Angiomatosis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dewan AK, Sowerby L, Jadeja S, Lian C, Wen P, Brown JR, Fisher DC, LeBoeuf NR. Pityriasis rubra pilaris-like erythroderma secondary to phosphoinositide 3-kinase inhibition. Clin Exp Dermatol 2018; 43:890-894. [PMID: 29851132 DOI: 10.1111/ced.13608] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Accepted: 08/31/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Phosphoinositide 3-kinase (PI3K) inhibitors are a class of small-molecule inhibitors approved for the treatment of certain leukaemias and lymphomas. Their dermatological adverse event profile is poorly described. AIM To characterize a rare cutaneous adverse event from PI3K inhibitors in order to help dermatologists and oncologists identify and effectively manage such eruptions. METHODS This was a retrospective analysis of patients receiving PI3K inhibitors referred to the Skin Toxicities Program in The Center for Cutaneous Oncology. RESULTS Three patients on PI3K inhibitors for treatment of malignancy developed diffuse erythroderma and keratoderma. Clinical and histopathological findings were consistent with pityriasis rubra pilaris (PRP)-like reactions. All patients improved with topical and oral corticosteroids, oral acitretin, and drug discontinuation. CONCLUSIONS PRP-like cutaneous eruptions may develop secondary to PI3K inhibition. Early dermatological evaluation of cutaneous toxicities to PI3K inhibitors as well as rapid initiation of disease-specific treatments may help keep patients on life-prolonging anti-cancer therapies.
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Affiliation(s)
- A K Dewan
- Department of Dermatology, The Center for Cutaneous Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA
| | - L Sowerby
- Department of Dermatology, The Center for Cutaneous Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA
| | - S Jadeja
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - C Lian
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - P Wen
- Department of Neuro-Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - J R Brown
- Chronic Lymphocytic Leukemia Center and Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - D C Fisher
- Division of Hematologic Malignancies and Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - N R LeBoeuf
- Department of Dermatology, The Center for Cutaneous Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA
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Geng S, Liu Y, Chu Z, Zhang X, Lian C. 199 TET2-mediated DNA hydroxymethylation epigenetically sensitizes melanoma to all-trans retinoic acid via BMI-1 pathway. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Li Z, Wang J, Gao F, Zhang J, Tian H, Shi X, Lian C, Sun Y, Li W, Xu JY, Li P, Zhang J, Gao Z, Xu J, Wang F, Lu L, Xu GT. Human Adipose-Derived Stem Cells Delay Retinal Degeneration in Royal College of Surgeons Rats Through Anti-Apoptotic and VEGF-Mediated Neuroprotective Effects. Curr Mol Med 2017; 16:553-66. [PMID: 27280496 DOI: 10.2174/1566524016666160607090538] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 05/25/2016] [Accepted: 05/27/2016] [Indexed: 11/22/2022]
Abstract
UNLABELLED Stem cell therapy is a promising therapeutic approach for retinal degeneration (RD). Our study investigated the effects of human adipose derived stem cell (hADSCs) on Royal College of Surgeons (RCS) rats. METHODS Green fluorescent protein (GFP)-labeled hADSCs were transplanted subretinally into RCS rats at postnatal (PN) 21 days to explore potential therapeutic effects, while adeno-associated viral vector (AAV2)-vascular endothelial growth factor (VEGF) and siVEGF-hADSCs were used to aid the mechanistic dissections. Visual function was evaluated by Electroretinogram (ERG) recording. Potential transdifferentiations were examined by Immunofluorescence (IF) and gene expressions were analyzed by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Apoptotic retinal cells were detected by Terminal Deoxynucleotidyl Transferase dUTP Nick End Labeling (TUNEL) assay and the cytokines secreted by hADSCs were measured by Enzyme-linked Immunosorbent Assay (ELISA). RESULTS The visual function of RCS rats began to decrease one week after their eyes opened at PN week 3 and almost lost in PN 5 weeks, accompanied by the loss of retinal outer nuclear layer (ONL). Subretinal transplantation of hADSCs significantly improved the visual function 2 weeks after the transplantation and such therapeutic effect persisted up to 8 weeks after the treatment (PN 11 weeks), with 3-4 rows of photoreceptors remained in the ONL and reduced apoptosis. Consistent with these phenotypic changes, the gene expression of rod photoreceptor markers Rhodopsin (Rho), Crx and Opsin (Opn1) in RCS rats showed obvious decreasing trends over time after PN 3 weeks, but were elevated with hADSC treatment. hADSC transplantation also repressed the expressions of Bax, Bak and Caspase 3, but not the expression of anti-apoptotic genes, including Bcl-2 and Bcl-XL. Finally, substantial VEGF, hepatocyte growth factor (HGF) and pigment epithelium-derived factor (PEDF) secretions from hADSCs were detected, while endogenous Vegf expression level decreased over time in RCS rats. The treatment of AAV2-VEGF showed comparable therapeutic effects as hADSCs but siRNA knockdown of VEGF in hADSCs essentially abolished the therapeutic effects. CONCLUSIONS Subretinal transplantation of hADSCs in RCS rats effectively delayed the retinal degeneration, enhanced the retinal cell survival and improved the visual function. Mechanistically this was mainly due to hADSC dependent anti-apoptotic and neuroprotective effects through its secretion of growth and neurotrophic factors including VEGF. Clinical application of hADSCs merits further investigation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - F Wang
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai, 200072, China.
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Lian C, Guo X, Long YS, Yang LR. Two novel coordination polymers: Synthesis, structure, luminescent properties, and selective sensing of Cu2+ and Mn2+ ions. RUSS J COORD CHEM+ 2017. [DOI: 10.1134/s1070328417050037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Cuevas-Núñez M, Woo S, Ramsey M, Chen X, Borges C, Xu V, Murphy G, Lian C. BIOLOGICAL SIGNIFICANCE OF 5-HYDROXYMETHYLCYTOSINE EXPRESSION IN ORAL MUCOSAL EPITHELIAL DYSPLASIA AND ORAL SQUAMOUS CELL CARCINOMA. Oral Surg Oral Med Oral Pathol Oral Radiol 2016. [DOI: 10.1016/j.oooo.2016.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li P, Tian H, Li Z, Wang L, Gao F, Ou Q, Lian C, Li W, Jin C, Zhang J, Xu JY, Wang J, Wang F, Lu L, Xu GT. Subpopulations of Bone Marrow Mesenchymal Stem Cells Exhibit Differential Effects in Delaying Retinal Degeneration. Curr Mol Med 2016; 16:567-81. [DOI: 10.2174/1566524016666160607090953] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 05/27/2016] [Accepted: 05/31/2016] [Indexed: 11/22/2022]
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Lian C, Li H, Denoeux T, Chen H, Robinson C, Vera P, Ruan S. MO-AB-BRA-10: Cancer Therapy Outcome Prediction Based On Dempster-Shafer Theory and PET Imaging. Med Phys 2015. [DOI: 10.1118/1.4925280] [Citation(s) in RCA: 1] [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: 11/07/2022] Open
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Guo W, Jiang T, Lian C, Wang H, Zheng Q, Ma H. ASSA14-03-03 QKI deficiency promotes FoxO1 mediated nitrosative stress and endoplasmic reticulum stress contributing to increased vulnerability to ischaemic injury in diabetic heart. Heart 2015. [DOI: 10.1136/heartjnl-2014-307109.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wei W, Ji A, Wang J, Wei Z, Lian C, Yang J, Ma L, Ma L, Qin X, Wang LD. Functional single nucleotide polymorphism in C20orf54 modifies susceptibility to esophageal squamous cell carcinoma. Dis Esophagus 2013; 26:97-103. [PMID: 22533825 DOI: 10.1111/j.1442-2050.2012.01339.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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] [Indexed: 12/11/2022]
Abstract
The aim of this study was to explore the association of C20orf54 functional single nucleotide polymorphism (SNP) with the susceptibility to esophageal squamous cell carcinoma (ESCC) in a northern China population. The C20orf54 SNP was genotyped by direct sequencing in 240 cancer patients and 198 controls in northern China. The results showed that drinking status, family history of ESCC, and body mass index have great influence on the risk of developing ESCC. The overall genotype frequencies of C20orf54 in ESCC patients have a significant difference with healthy controls (χ(2) = 8.06, P = 0.018). By using C/C genotype as the reference, the C/T genotype showed a significantly decreased risk to the development of ESCC. Thus, compared with the C/C genotype, smokers, drinkers with C/T genotype significantly decreased the risk of developing ESCC. A positive family history of ESCC with C/T and T/T genotype both increased the risk of developing ESCC. Body mass index between 18.5 and 24 with C/T genotype significantly decreased the risk of developing ESCC. The present study suggests that the C20orf54 functional SNP might be associated with a risk of development in ESCC.
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Affiliation(s)
- W Wei
- Central Laboratory, Heping Hospital-Changzhi Medical College, 161 Jie Fang Dong Street, Changzhi, Shanxi Province, China
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Afroundeh R, Arimitsu T, Yamanaka R, Lian C, Yunoki T, Yano T. Effects of humoral factors on ventilation kinetics during recovery after impulse-like exercise. Acta Physiol Hung 2012; 99:185-93. [PMID: 22849843 DOI: 10.1556/aphysiol.99.2012.2.12] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
To clarify the ventilatory kinetics during recovery after impulse-like exercise, subjects performed one impulse-like exercise test (one-impulse) and a five-times repeated impulse-like exercises test (five-impulse). Duration and intensity of the impulse-like exercise were 20 sec and 400 watts (80 rpm), respectively. Although blood pH during recovery (until 10 min) was significantly lower in the five-impulse test than in the one-impulse test, ventilation (.VE) in the two tests was similar except during the first 30 sec of recovery, in which it was higher in the five-impulse test. In one-impulse, blood CO2 pressure (PCO2) was significantly increased at 1 min during recovery and then returned to the pre-exercise level at 5 min during recovery. In the five-impulse test, PCO2 at 1 min during recovery was similar to the pre-exercise level, and then it decreased to a level lower than the pre-exercise level at 5 min during recovery. Accordingly, PCO2 during recovery (until 30 min) was significantly lower in the five-impulse than in one-impulse test..VE and pH during recovery showed a curvilinear relationship, and at the same pH, ventilation was higher in the one-impulse test. These results suggest that ventilatory kinetics during recovery after impulse-like exercise is attributed partly to pH, but the stimulatory effect of lower pH is diminished by the inhibitory effect of lower PCO2.
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Affiliation(s)
- R Afroundeh
- Laboratory of Exercise Physiology, Hokkaido University, Sapporo, Japan
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Matusura R, Arimitsu T, Yamanak R, Lian C, Afroundeh R, Kondo S, Yano T, Yunoki T. EFFECTS OF BLOOD LACTATE ON OXYGEN UPTAKE KINETICS DURING RECOVERY AFTER SPRINT IN HUMANS. Biol Sport 2012. [DOI: 10.5604/20831862.1003273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Arimitsu T, Matsuura R, Yunoki T, Yamanaka R, Kimura T, Lian C, Afroundeh R, Yano T. RELATIONSHIP BETWEEN OXYGEN UPTAKE AND OXYGEN SUPPLY SYSTEM DURING INCREMENTAL-LOAD SUPINE EXERCISE. Biol Sport 2011. [DOI: 10.5604/942718] [Citation(s) in RCA: 1] [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: 11/13/2022] Open
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Qinhua J, Yundai C, Akasaka, Mizukoshi, Kitabata, Changfu L, Feng T, Lian C, Zhijun S, Hongbin L, Zhifeng W, Jun G, Jinda W. e0320 Impact of plaque morphology on intimal hyperplasia after stenting assessed by optical coherence tomography. Heart 2010. [DOI: 10.1136/hrt.2010.208967.320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Yihong R, Yundai C, Ming Z, Chengbin W, Lian C, Hongbin L, Yu W, Zhijun S, Jinsong C, Tingting H, Yusong G, Yongjin X. e0434 The effects of Proton pump inhibitors on Clopidogrel efficacy in patients with ACS through PCI in China. Heart 2010. [DOI: 10.1136/hrt.2010.208967.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yihong R, Yundai C, Ming Z, Jinsong C, Lian C, Hongbin L, Yu W, Zhijun S. e0324 Platelet activation distribution in Chinese high risk patients with acute coronary syndrome. Heart 2010. [DOI: 10.1136/hrt.2010.208967.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yihong R, Yundai C, Ming Z, Jinsong C, Lian C. e0458 Comparative study of aspirin and clopidogrel in high risk ACS. Heart 2010. [DOI: 10.1136/hrt.2010.208967.458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
It is unknown whether strains isolated from recurrent vulvovaginal candidosis (RVVC), vulvovaginal candidosis (VVC) and asymptomatic carriers are varying or not in genotyping. Candida isolates were genotyped to determine whether specific types were associated with RVVC and VVC. A total of 97 Candida isolates from RVVC patients (n = 43), from VVC patients (n = 47) and asymptomatic carriers (n = 7) were identified by germ tube test, chlamydospore test, CHROMagar Candida and API20 system and were genotyped by polymerase chain reaction (PCR) fingerprinting employing random amplification of polymorphic DNA (RAPD) assay with nine random primers screened. The RAPD identified distinct genotypes that were shared among isolates from most different individuals. Most of the 85 C. albicans strains failed to corroborate any obvious differences in the genotypic variability in the VVC, RVVC patient groups and carriers by clustering analysis. Only a few individuals were found to harbor a distinct genotype of C. albicans isolates associated with a specific disease condition.
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Affiliation(s)
- C Lian
- Department of Medical Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing City, China
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Yang Z, Wang J, Kobayashi Y, Lian C, Li S, Sun X, Tan Y, Yagi S, Frenkel E, Hoffman R. 52 Attenuated immunogenicity and toxicity of PEGylated recombinant methioninase (PEG-rMETase) in primates. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Nagai S, Lian C, Hamaguchi M, Matsuyama Y, Itakura S, Hogetsu T. Development of microsatellite markers in the toxic dinoflagellate Alexandrium tamarense (Dinophyceae). ACTA ACUST UNITED AC 2004. [DOI: 10.1046/j.1471-8286.2003.00576.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Islam MS, Lian C, Kameyama N, Wu B, Hogetsu T. Development of microsatellite markers in Rhizophora stylosa using a dual-suppression-polymerase chain reaction technique. ACTA ACUST UNITED AC 2004. [DOI: 10.1046/j.1471-8286.2003.00585.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lian C, Hogetsu T. Development of microsatellite markers in black locust (Robinia pseudoacacia) using a dual-supression-PCR technique. ACTA ACUST UNITED AC 2002. [DOI: 10.1046/j.1471-8286.2002.00213.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lian C, Hogetsu T. Development of microsatellite markers in black locust (Robinia pseudoacacia) using a dual-supression-PCR technique. ACTA ACUST UNITED AC 2002. [DOI: 10.1046/j.1471-8286.2002.00213.x-i2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kanchanaprayudh J, Lian C, Zhou Z, Hogetsu T, Sihanonth P. Polymorphic microsatellite markers of a Pisolithus sp. from a Eucalyptus plantation. ACTA ACUST UNITED AC 2002. [DOI: 10.1046/j.1471-8286.2002.00216.x-i2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
This study employed microsatellite loci to analyse outcrossing rate and pollen dispersal in Japanese red pine (Pinus densiflora) in an isolated stand. The average offspring outcrossing rate for 29 cones was 0.955. Significant differences in outcrossing rates between offspring groups on individual branches that extended in different directions at different heights were not detected. Male parents of 874 offspring collected from the maternal tree were assessed by exclusion using polymorphisms at three microsatellite loci. Paternity analysis indicated that at least 31% of the offspring were fertilized by pollen from trees outside the stand. The average distance of pollen migration within the study stand was 68 m, with a maximum value of 325 m. There was excess mating with nearby P. densiflora trees, of which only a few were predominant pollen donors. In addition, a weakly directional bias in P. densiflora pollination was also detected in the study stand, suggesting that female strobili on a branch of the maternal tree were more easily fertilized by pollen from trees in that direction.
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Affiliation(s)
- C Lian
- Asian Natural Environmental Science Center, The University of Tokyo, Midori-cho 1-1-8, Nishi Tokyo, Tokyo 188-0002, Japan.
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Affiliation(s)
- C Lian
- Asian Natural Environmental Science Center, The University of Tokyo, Tanashi, Japan.
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Sugiyama H, Lian C, Isomura M, Saito I, Wang AH. Distamycin A modulates the sequence specificity of DNA alkylation by duocarmycin A. Proc Natl Acad Sci U S A 1996; 93:14405-10. [PMID: 8962064 PMCID: PMC26145 DOI: 10.1073/pnas.93.25.14405] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Duocarmycin A (Duo) normally alkylates adenine N3 at the 3' end of A + T-rich sequences in DNA. The efficient adenine alkylation by Duo is achieved by its monomeric binding to the DNA minor groove. The addition of another minor groove binder, distamycin A (Dist), dramatically modulates the site of DNA alkylation by Duo, and the alkylation switches preferentially to G residues in G + C-rich sequences. HPLC product analysis using oligonucleotides revealed a highly efficient G-N3 alkylation via the cooperative binding of a heterodimer between Duo and Dist to the minor groove. The three-dimensional structure of the ternary alkylated complex of Duo/Dist/d(CAGGTGGT).d(ACCACCTG) has been determined by nuclear Overhauser effect (NOE)-restrained refinement using 750 MHz two-dimensional NOE spectroscopy data. The refined NMR structure fully explains the sequence requirement of such modulated alkylations. This is the first demonstration of Duo DNA alkylation through cooperative binding with another structurally different natural product, and it suggests a promising new way to alter or modify the DNA alkylation selectivity in a predictable manner.
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Affiliation(s)
- H Sugiyama
- Department of Synthetic Chemistry and Biological Chemistry, Faculty of Engineering, Kyoto University, Japan
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Lian C, Le H, Montez B, Patterson J, Harrell S, Laws D, Matsumura I, Pearson J, Oldfield E. Fluorine-19 nuclear magnetic resonance spectroscopic study of fluorophenylalanine- and fluorotryptophan-labeled avian egg white lysozymes. Biochemistry 1994; 33:5238-45. [PMID: 8172898 DOI: 10.1021/bi00183a029] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report the 470-MHz (11.7 T) 19F solution nuclear magnetic resonance (NMR) spectra of 2-, 3-, and 4-fluorophenylalanine incorporated into the egg white lysozymes (EC 3.2.1.17) of chicken, pheasant, and duck, as well as spectra of 4-fluorotryptophan incorporated into chicken, California valley quail, and Bob White quail and 5- and 6-fluorotryptophan-labeled chicken lysozyme. The 19F solution NMR spectrum of [4-F]Phe hen egg white lysozyme (HEWL) consists of three sharp resonances, which span a total chemical shift range of 4.8 ppm (at p2H = 6.1). For [3-F]Phe HEWL, the chemical shift range is much smaller, 1.0 ppm (at p2H = 5.9), due presumably to the occurrence of fast phenyl ring flips about the C beta-C gamma bond axis. For [2-F]Phe HEWL, six resonances are observed, spanning a chemical shift range of 7.4 ppm (at p2H = 5.8), due to slow C beta-C gamma ring flips, i.e., both ring-flip isomers appear to be "frozen in" because of steric hindrance. Rotation of the [2-F]Phe residues remains slow up to 55 degrees C (p2H = 4.7). With the [F]Trp-labeled proteins, we find a maximal 14.6-ppm shielding range for [4-F]Trp HEWL but only a 2.8- and 2.4-ppm range for [5- and 6-F]Trp HEWL, respectively, due presumably to increased solvent exposure in the latter cases. Guanidinium chloride denaturation causes loss of essentially all chemical shift nonequivalence, as does thermal denaturation. Spectra recorded as a function of pH show relatively small chemical shift changes (< 1.4 ppm) over the pH range of approximately 1.2-7.8.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- C Lian
- Department of Chemistry, University of Illinois at Urbana-Champaign 61801
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Lian C. [Apropos of a case of initially unrecognized auricular flutter]. Actual Cardiol Angeiol Int (Paris) 1965; 14:241-3. [PMID: 5879742] [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: 01/17/2023]
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Lian C. [Exclusively maximal arterial hypertension of atherosclerotic origin must not be treated with hypotensive drugs]. Actual Cardiol Angeiol Int (Paris) 1965; 14:73-4. [PMID: 5839162] [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: 01/17/2023]
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