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Mei Z, Liu J, Schroeder JP, Weinshenker D, Duong DM, Seyfried NT, Li Y, Jin P, Wingo AP, Wingo TS. Lowering Hippocampal miR-29a Expression Slows Cognitive Decline and Reduces Beta-Amyloid Deposition in 5×FAD Mice. Mol Neurobiol 2024; 61:3343-3356. [PMID: 37989983 DOI: 10.1007/s12035-023-03791-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/08/2023] [Indexed: 11/23/2023]
Abstract
microRNA-29a (miR-29a) increases with age in humans and mice, and, in the brain, it has a role in neuronal maturation and response to inflammation. We previously found higher miR-29a levels in the human brain to be associated with faster antemortem cognitive decline, suggesting that lowering miR-29a levels could ameliorate memory impairment in the 5×FAD AD mouse model. To test this, we generated an adeno-associated virus (AAV) expressing GFP and a miR-29a "sponge" or empty vector. We found that the AAV expressing miR-29a sponge functionally reduced miR-29a levels and improved measures of memory in the Morris water maze and fear condition paradigms when delivered to the hippocampi of 5×FAD and WT mice. miR-29a sponge significantly reduced hippocampal beta-amyloid deposition in 5×FAD mice and lowered astrocyte and microglia activation in both 5×FAD and WT mice. Using transcriptomic and proteomic sequencing, we identified Plxna1 and Wdfy1 as putative effectors at the transcript and protein level in WT and 5×FAD mice, respectively. These data indicate that lower miR-29a levels mitigate cognitive decline, making miR-29a and its target genes worth further evaluation as targets to mitigate Alzheimer's disease (AD).
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Affiliation(s)
- Zhen Mei
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Jiaqi Liu
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Jason P Schroeder
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - David Weinshenker
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
- Goizueta Alzheimer's Disease Research Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Duc M Duong
- Goizueta Alzheimer's Disease Research Center, Emory University School of Medicine, Atlanta, GA, USA
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - Nicholas T Seyfried
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
- Goizueta Alzheimer's Disease Research Center, Emory University School of Medicine, Atlanta, GA, USA
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - Yujing Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Peng Jin
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Aliza P Wingo
- Division of Mental Health, Atlanta VA Medical Center, Decatur, GA, USA
- Department of Psychiatry, Emory University School of Medicine, Atlanta, GA, USA
| | - Thomas S Wingo
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA.
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA.
- Goizueta Alzheimer's Disease Research Center, Emory University School of Medicine, Atlanta, GA, USA.
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Zhao Z, Zhao J, Liang L, Zhou Y, Mei Z, Li Y, Zhou Z, Zhang L, Fan S, Li Q, Wei Y. Microheater Chips with Carbon Nanotube Resistors. ACS Appl Mater Interfaces 2024. [PMID: 38688033 DOI: 10.1021/acsami.3c18496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The specific and excellent properties of the low-dimensional nanomaterials have made them promising building blocks to be integrated into microelectromechanical systems with high performances. Here, we present a new microheater chip for in situ TEM, in which a cross-stacked superaligned carbon nanotube (CNT) film resistor is located on a suspended SiNx membrane via van der Waals (vdW) interactions. The CNT microheater has a fast high-temperature response and low power consumption, thanks to the micro/nanostructure of the CNT materials. Moreover, the membrane bulging amplitude is significantly reduced to only ∼100 nm at 800 °C for the vdW interaction between the CNTs and the SiNx membrane. An in situ observation of the Sn melting process is successfully conducted with the assistance of a customized flexible temperature control system. The uniform wafer-scaled CNT films enable a high level of consistency and cost-effective mass production of such chips. The as-developed in situ chips, as well as the related techniques, hold great promise in nanoscience, materials science, and electrochemistry.
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Affiliation(s)
- Zhongyuan Zhao
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Jie Zhao
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Liang Liang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Yushi Zhou
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Zhen Mei
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Yuheng Li
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Zuoping Zhou
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Lina Zhang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Shoushan Fan
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Qunqing Li
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Yang Wei
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
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Zhou Z, Lin JF, Zeng Z, Ma X, Liang L, Li Y, Zhao Z, Mei Z, Yang H, Li Q, Wu J, Fan S, Chen X, Xia TL, Wei Y. Engineering van der Waals Contacts by Interlayer Dipoles. Nano Lett 2024; 24:4408-4414. [PMID: 38567928 DOI: 10.1021/acs.nanolett.4c00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Tuning the interfacial Schottky barrier with van der Waals (vdW) contacts is an important solution for two-dimensional (2D) electronics. Here we report that the interlayer dipoles of 2D vdW superlattices (vdWSLs) can be used to engineer vdW contacts to 2D semiconductors. A bipolar WSe2 with Ba6Ta11S28 (BTS) vdW contact was employed to exhibit this strategy. Strong interlayer dipoles can be formed due to charge transfer between the Ba3TaS5 and TaS2 layers. Mechanical exfoliation breaks the superlattice and produces two distinguished surfaces with TaS2 and Ba3TaS5 terminations. The surfaces thus have opposite surface dipoles and consequently different work functions. Therefore, all the devices fall into two categories in accordance with the rectifying direction, which were verified by electrical measurements and scanning photocurrent microscopy. The growing vdWSL family along with the addition surface dipoles enables prospective vdW contact designs and have practical application in nanoelectronics and nano optoelectronics.
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Affiliation(s)
- Zuoping Zhou
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Jun-Fa Lin
- Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, P. R. China
| | - Zimeng Zeng
- Department of Physics, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Xiaoping Ma
- Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, P. R. China
- Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Liang Liang
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Yuheng Li
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Zhongyuan Zhao
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Zhen Mei
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Huaixin Yang
- Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Qunqing Li
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Jian Wu
- Department of Physics, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Shoushan Fan
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
| | - Xi Chen
- Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - Tian-Long Xia
- Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, P. R. China
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) and Laboratory for Neutron Scattering, Renmin University of China, Beijing 100872, P. R. China
| | - Yang Wei
- Department of Physics, Tsinghua University, Beijing 100084, China
- Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
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Wang Z, Pan X, Mei Z, Xu Z, Lv Y, Zhang Y, Guan C. ECGAN-Assisted ResT-Net Based on Fuzziness for OSA Detection. IEEE Trans Biomed Eng 2024; PP:1-9. [PMID: 38498752 DOI: 10.1109/tbme.2024.3378508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
OBJECTIVE Growing attention has been paid recently to electrocardiogram (ECG) based obstructive sleep apnea (OSA) detection, with some progresses been made on this topic. However, the lack of data, low data quality, and incomplete data labeling hinder the application of deep learning to OSA detection, which in turn affects the overall generalization capacity of the network. METHODS To address these issues, we propose the ResT-ECGAN framework. It uses a one-dimensional generative adversarial network (ECGAN) for sample generation, and integrates it into ResTNet for OSA detection. ECGAN filters the generated ECG signals by incorporating the concept of fuzziness, effectively increasing the amount of high-quality data. ResT-Net not only alleviates the problems caused by deepening the network but also utilizes multihead attention mechanisms to parallelize sequence processing and extract more valuable OSA detection features by leveraging contextual information. RESULTS Through extensive experiments, we verify that ECGAN can effectively improve the OSA detection performance of ResT-Net. Using only ResT-Net for detection, the accuracy on the Apnea-ECG and private databases is 0.885 and 0.837, respectively. By adding ECGAN-generated data augmentation, the accuracy is increased to 0.893 and 0.848, respectively. CONCLUSION AND SIGNIFICANCE Comparing with the state-of-the-art deep learning methods, our method outperforms them in terms of accuracy. This study provides a new approach and solution to improve OSA detection in situations with limited labeled samples.
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Mei Z, Lin YX, Yao PS, Wang F, Huang XF, Lin H, Hu XQ, Lin YQ, Gao L, Kang DZ. [Diagnostic value of high frequency oscillation in localization of type Ⅱ focal cortical dysplasia epilepsy]. Zhonghua Yi Xue Za Zhi 2024; 104:614-617. [PMID: 38389239 DOI: 10.3760/cma.j.cn112137-20231019-00826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Retrospective analysis was conducted on 9 patients with type Ⅱ focal cortical dysplasia (FCD) who underwent stereo-electroencephalography (SEEG) implantation in the Department of Neurosurgery of the First Affiliated Hospital of Fujian Medical University from November 2020 to February 2023. The onset area, onset time, and frequency of high-frequency oscillations (HFO) were analyzed and the correlation of HFOs with interictal, preictal, and ictal periods. SEEG recordings of 80-500 Hz HFOs were observed in both interictal and ictal periods in 9 patients, with 6 patients exhibiting fast ripples (FR) in the range of 250-500 Hz. Surgical resection of the seizure onset area and FR-generating electrodes was performed, and postoperative follow-up for over 2 years indicated Engel I in 5 cases. 6 patients showed continuous discharge during the preictal period, and the distribution index of continuous discharge was positively correlated with seizure frequency. HFOs in the range of 80-500 Hz were present in all four seizure onset patterns during the ictal period. The onset area and FR-emitting electrode were surgically removed in 6 patients with continuous discharge and overlapping HFOs during the preictal period, with 5 cases of Engel I. Type Ⅱ FCD discharges exhibited complexity, high discharge indices, and a close association with HFOs. Compared with the spike wave, the electrode range of HF is more limited, and the incidence of HF before attack is significantly increased, which is closely correlated with the onset area. The simultaneous occurrence of HFO and the spike waves has higher diagnostic value than the individual occurrence, effectively enhancing surgical efficacy.
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Affiliation(s)
- Z Mei
- Department of Neurosurgery, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Y X Lin
- Department of Neurosurgery, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - P S Yao
- Fujian Institute of Brain Disorders and Brain Science, Fuzhou 350005, China
| | - F Wang
- Fujian Clinical Research Center for Neurological Diseases, Fuzhou 350005, China
| | - X F Huang
- Department of Neurosurgery, First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - H Lin
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - X Q Hu
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Y Q Lin
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - L Gao
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - D Z Kang
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
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Hu X, Fang Z, Wang F, Mei Z, Huang X, Lin Y, Lin Z. A causal relationship between gut microbiota and subcortical brain structures contributes to the microbiota-gut-brain axis: a Mendelian randomization study. Cereb Cortex 2024; 34:bhae056. [PMID: 38415993 DOI: 10.1093/cercor/bhae056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/27/2024] [Accepted: 01/28/2024] [Indexed: 02/29/2024] Open
Abstract
A correlation between gut microbiota and brain structure, referring to as a component of the gut-brain axis, has been observed in observational studies. However, the causality of this relationship and its specific bacterial taxa remains uncertain. To reveal the causal effects of gut microbiota on subcortical brain volume, we applied Mendelian randomization (MR) studies in this study. Genome-wide association study data were obtained from the MiBioGen Consortium (n = 18,340) and the Enhancing Neuro Imaging Genetics through Meta-Analysis Consortium (n = 13,170). The primary estimate was obtained utilizing the inverse-variance weighted, while heterogeneity and pleiotropy were assessed using the Cochrane Q statistic, MR Pleiotropy RESidual Sum and Outlier, and MR-Egger intercept. Our findings provide strong evidence that a higher abundance of the genus Parasutterella is causally correlated with a decrease in intracranial volume (β = -30,921.33, 95% CI -46,671.78 to -15,170.88, P = 1.19 × 10-4), and the genus FamilyXIIIUCG001 is associated with a decrease in thalamus volume (β = -141.96, 95% CI: -214.81 to -69.12, P = 1.0× 10-4). This MR study offers novel perspectives on the intricate interplay between the gut microbiota and subcortical brain volume, thereby lending some support to the existence of the microbiota-gut-brain axis.
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Affiliation(s)
- Xuequn Hu
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Zhiyong Fang
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Feng Wang
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Zhen Mei
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Xiaofen Huang
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Yuanxiang Lin
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
| | - Zhangya Lin
- Department of Neurosurgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, 999 Huashan Road, Changle District, Fuzhou 350209, Fujian Province, China
- Department of Neurosurgery, Neurosurgery Research Institute, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Taijiang District, Fuzhou 350005, Fujian Province, China
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Du Y, Gu J, Yang Y, Chen Y, Wang Y, Mei Z, Li Y, Li L, Xue D, Wang X, Li D, Hu P, Nie W, Chu N. Efficacy and safety of bicyclol for treating patients with antituberculosis drug-induced liver injury. Int J Tuberc Lung Dis 2024; 28:6-12. [PMID: 38178298 DOI: 10.5588/ijtld.23.0038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND: Bicyclol was used for treating idiosyncratic acute drug-induced liver injury (DILI) in a phase II trial. This study was aimed at evaluating the efficacy and safety of bicyclol 25 and 50 mg thrice a day (TID) for treating acute DILI caused by anti-TB drugs in the light of the trial results.METHODS: We analysed clinical data of patients with TB drug-induced DILI in the trial database. The primary endpoint was reduction in serum alanine aminotransferase (ALT) levels after 4 weeks of treatment compared to baseline.RESULTS: Overall, 148 patients were included, with respectively 48, 52 and 48 patients included in the control (456 mg polyene phosphatidylcholine TID), high-dose (50 mg bicyclol TID) and low-dose (25 mg bicyclol TID) groups. ALT levels decreased by respectively â-"149.0 (IQR â-"299.3 to â-"98.3 (), â-"225.5 (IQR â-"309.3 to â-"181.8 ) and â-"242.5 (IQR â-"364.8 to â-"153.8) U/L in the control, high-dose and low-dose groups (P < 0.001). The ALT normalisation rates at weeks 1, 2, 4, 6 and 8 were higher in the high- and low-dose groups, while adverse events and serious adverse events were similar across groups.CONCLUSIONS: Bicyclol (25 and 50 mg TID) is effective and safe in treating anti-TB DILI, and bicyclol 50 mg TID showed higher efficacy.
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Affiliation(s)
- Y Du
- Department of Tuberculosis, Beijing Chest Hospital, Capital Medical University, Beijing
| | - J Gu
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Shanghai
| | - Y Yang
- Department of Tuberculosis, Beijing Chest Hospital, Capital Medical University, Beijing
| | - Y Chen
- Department of Tuberculosis, Henan Infectious Diseases Hospital (The Sixth People's Hospital of Zhengzhou), Zhengzhou
| | - Y Wang
- Department of Tuberculosis, The First Affiliated Hospital of Xinxiang Medical University, Weihui
| | - Z Mei
- Department of Tuberculosis, Tianjin Haihe Hospital, Tianjin
| | - Y Li
- Department of Infectious Diseases, The Second Xiangya Hospital of Central South University, Changsha
| | - L Li
- Department of Infectious Disease, The First Affiliated Hospital of University of Science and Technology of China, Hefei
| | - D Xue
- Department of Infectious Diseases, Shanghai Putuo District Central Hospital, Shanghai
| | - X Wang
- Liver Disease Center of Naval 905 Hospital, Shanghai
| | - D Li
- Department of Hepatobiliary Disease, 900th hospital of PLA's Joint Logistics Support Force, Fuzhou
| | - P Hu
- Department of Infectious Diseases, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - W Nie
- Department of Tuberculosis, Beijing Chest Hospital, Capital Medical University, Beijing
| | - N Chu
- Department of Tuberculosis, Beijing Chest Hospital, Capital Medical University, Beijing
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Bhatt R, Lori A, Liu J, Mei Z, Wingo TS, Wingo AP. Important Correlates of Purpose in Life in a Diverse Population-Based Cohort: A Machine Learning Approach. Am J Geriatr Psychiatry 2023; 31:691-703. [PMID: 37032256 DOI: 10.1016/j.jagp.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Purpose-in-life (PiL) refers to the tendency to derive meaning and purpose from daily life experiences. Individuals with higher PiL were more likely to have better physical, mental, and cognitive health in prospective studies. Here, we aimed to identify important correlates of PiL among people of diverse backgrounds. METHODS Participants were recruited by the population-based Health and Retirement Study and provided information on 34 different sociodemographic and psychosocial factors through psychometrically validated measures. To identify important correlates of PiL, we employed regularized regression implemented by Elastic Net on the entire cohort as well as among self-identified black participants only and white participants only, respectively. RESULTS A total of 6,620 participants were included in this study, among whom 913 were black and 5,707 were white. We identified 12 and 23 important sociodemographic and psychosocial correlates of PiL among black and white participants, respectively. Notably, all the 12 correlates in black participants were also correlates among white participants. Interestingly, when we examined both black and white participants together, being black was associated with having higher PiL. The correlates with the largest effect on PiL that were shared among black and white participants were hopelessness, perceived constraint on personal control, and self-mastery. CONCLUSION Several sociodemographic and psychosocial factors most strongly associated with PiL were shared among black and white participants. Future studies should investigate whether interventions targeting correlates of PiL can lead to higher sense of life purpose in participants of diverse backgrounds.
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Affiliation(s)
- Rishab Bhatt
- Emory College of Arts & Sciences, and Division of Mental Health (RB), Atlanta VA Medical Center, Decatur, GA
| | - Adriana Lori
- Emory University School of Medicine Departments of Psychiatry, Division of Mental Health (AL, APW), Atlanta VA Medical Center, Decatur, GA
| | - Jiaqi Liu
- Neurology, Division of Mental Health (JL, ZM, TSW), Atlanta VA Medical Center, Decatur, GA
| | - Zhen Mei
- Neurology, Division of Mental Health (JL, ZM, TSW), Atlanta VA Medical Center, Decatur, GA
| | - Thomas S Wingo
- Neurology, Division of Mental Health (JL, ZM, TSW), Atlanta VA Medical Center, Decatur, GA; Human Genetics, Division of Mental Health (TSW), Atlanta VA Medical Center, Decatur, GA.
| | - Aliza P Wingo
- Emory University School of Medicine Departments of Psychiatry, Division of Mental Health (AL, APW), Atlanta VA Medical Center, Decatur, GA; Division of Mental Health (APW), Atlanta VA Medical Center, Decatur, GA.
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Abd-Alaziz W, Jebur BA, Fakhrey H, Mei Z, Rabie K. A Low-Complexity Coding Scheme for NOMA. IEEE Systems Journal 2023; 17:4464-4473. [DOI: 10.1109/jsyst.2023.3262174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Affiliation(s)
- Wael Abd-Alaziz
- Computer Information System, College of Computer Science and Information Technology, University of Sumer, Qalat Sukar, Iraq
| | - Bilal A. Jebur
- Department of Computer and Information Engineering, Ninevah University, Mosul, Iraq
| | - Harih Fakhrey
- Kwarizmy School of Engineering, Baghdad University, Baghdad, Iraq
| | - Zhen Mei
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Khaled Rabie
- Department of Engineering, Manchester Metropolitan University, Manchester, U.K
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Mei Z, Liu J, Schroeder JP, Weinshenker D, Duong DM, Seyfried NT, Li Y, Jin P, Wingo AP, Wingo TS. Lowering hippocampal miR-29a expression slows cognitive decline and reduces beta-amyloid deposition in 5xFAD mice. Res Sq 2023:rs.3.rs-3235257. [PMID: 37645711 PMCID: PMC10462195 DOI: 10.21203/rs.3.rs-3235257/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
microRNA-29a (miR-29a) increases with age in humans and mice, and, in the brain, it has a role in neuronal maturation and response to inflammation. We previously associated higher miR-29a levels in human brain with faster antemortem cognitive decline, suggesting that lowering miR-29a levels could ameliorate memory impairment in the 5xFAD AD mouse model. To test this hypothesis, we generated an adeno-associated virus (AAV) expressing GFP and a miR-29a "sponge" or empty vector. We found that the AAV expressing miR-29a sponge functionally reduced miR-29a levels, and improved measures of memory in the Morris water maze and fear condition paradigms when sponge delivered to hippocampi of 5XFAD and WT mice. miR-29a sponge expression significantly reduced hippocampal beta-amyloid deposition in 5XFAD mice and lowered astrocyte and microglia activation in both 5XFAD and WT mice. Using transcriptomic and proteomic sequencing, we identified Plxna1 and Wdfy1 as putative effectors at the transcript and protein level in WT and 5XFAD mice, respectively. These data indicate that miR-29a promotes AD-like neuropathology and negatively regulates cognition, making it and its target genes attractive therapeutic targets for the treatment of neurodegenerative disease.
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11
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Wang C, Mei Z, Li J, Shu F, He X, Kong L. Channel Modeling and Quantization Design for 3D NAND Flash Memory. Entropy (Basel) 2023; 25:965. [PMID: 37509912 PMCID: PMC10378194 DOI: 10.3390/e25070965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023]
Abstract
As the technology scales down, two-dimensional (2D) NAND flash memory has reached its bottleneck. Three-dimensional (3D) NAND flash memory was proposed to further increase the storage capacity by vertically stacking multiple layers. However, the new architecture of 3D flash memory leads to new sources of errors, which severely affects the reliability of the system. In this paper, for the first time, we derive the channel probability density function of 3D NAND flash memory by taking major sources of errors. Based on the derived channel probability density function, the mutual information (MI) for 3D flash memory with multiple layers is derived and used as a metric to design the quantization. Specifically, we propose a dynamic programming algorithm to jointly optimize read-voltage thresholds for all layers by maximizing the MI (MMI). To further reduce the complexity, we develop an MI derivative (MID)-based method to obtain read-voltage thresholds for hard-decision decoding (HDD) of error correction codes (ECCs). Simulation results show that the performance with jointly optimized read-voltage thresholds can closely approach that with read-voltage thresholds optimized for each layer, with much less read latency. Moreover, the MID-based MMI quantizer almost achieves the optimal performance for HDD of ECCs.
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Affiliation(s)
- Cheng Wang
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Zhen Mei
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
- National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
| | - Jun Li
- School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Feng Shu
- School of Information and Communication Engineering, Hainan University, Haikou 570228, China
| | - Xuan He
- School of Information Science and Technology, Southwest Jiaotong University, Chengdu 611756, China
| | - Lingjun Kong
- Jinling Institute of Technology, Nanjing 211169, China
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12
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Mei Z, Li Z, Su L, Wang J, Li F. Quantized H ∞ filtering for networked persistent dwell-time switched piecewise-affine systems. ISA Trans 2023; 136:173-181. [PMID: 36336471 DOI: 10.1016/j.isatra.2022.10.017] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/15/2022] [Accepted: 10/15/2022] [Indexed: 05/16/2023]
Abstract
In this study, the problem of quantized H∞ filtering is addressed for networked switched piecewise-affine systems, in which the switching mechanism obeys the persistent dwell-time constraint. To process the measurement output and schedule the transmission sequence for alleviating the burden of the limited communication channel, a logarithmic quantizer is employed, which can further improve the bandwidth utilization in networked switched systems. On the basis of state-space division, the objective is to design a mode-dependent and region-dependent filter that ensuresthe filtering error system is globally uniformly exponentially stable and meets an H∞ performance. By using the mode-dependent Lyapunov function approach and employing appropriate decoupling methods, sufficient conditions for obtaining desired filter gains are deduced. Eventually, two illustrated examples are given to demonstrate the effectiveness of our proposed method.
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Affiliation(s)
- Zhen Mei
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243032, China
| | - Ziwei Li
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243032, China
| | - Lei Su
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243032, China.
| | - Jing Wang
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243032, China
| | - Feng Li
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan 243032, China
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13
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Lee MS, Lin VY, Mei Z, Mei J, Chan E, Shipp D, Chen JM, Le TN. Examining the Spatial Varying Effects of Sociodemographic Factors on Adult Cochlear Implantation Using Geographically Weighted Poisson Regression. Otol Neurotol 2023; 44:e287-e294. [PMID: 36962009 DOI: 10.1097/mao.0000000000003861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
OBJECTIVE To (i) demonstrate the utility of geographically weighted Poisson regression (GWPR) in describing geographical patterns of adult cochlear implant (CI) incidence in relation to sociodemographic factors in a publicly funded healthcare system, and (ii) compare Poisson regression and GWPR to fit the aforementioned relationship. STUDY DESIGN Retrospective study of provincial CI Program database. SETTING Academic hospital. PATIENTS Adults 18 years or older who received a CI from 2020 to 2021. INTERVENTIONS Cochlear implant. MAIN OUTCOME MEASURES CI incidence based on income level, education attainment, age at implantation, and distance from center, and spatial autocorrelation across census metropolitan areas. RESULTS Adult CI incidence varied spatially across Ontario (Moran's I = 0.04, p < 0.05). Poisson regression demonstrated positive associations between implantation and lower income level (coefficient = 0.0284, p < 0.05) and younger age (coefficient = 0.1075, p < 0.01), and a negative association with distance to CI center (coefficient = -0.0060, p < 0.01). Spatial autocorrelation was significant in Poisson model (Moran's I = 0.13, p < 0.05). GWPR accounted for spatial differences (Moran's I = 0.24, p < 0.690), and similar associations to Poisson were observed. GWPR further identified clusters of implantation in South Central census metropolitan areas with higher education attainment. CONCLUSIONS Adult CI incidence demonstrated a nonstationary relationship between implantation and the studied sociodemographic factors. GWPR performed better than Poisson regression in accounting for these local spatial variations. These results support the development of targeted interventions to improve access and utilization to CIs in a publicly funded healthcare system.
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Affiliation(s)
- Melissa S Lee
- Faculty of Medicine, University of British Columbia, Vancouver
| | | | | | | | - Emmanuel Chan
- Evaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, Canada
| | - David Shipp
- Sunnybrook Cochlear Implant Program, Sunnybrook Health Sciences Centre
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14
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Abstract
Reconfigurable logic circuits implemented by two-dimensional (2D) ambipolar semiconductors provide a prospective solution for the post-Moore era. It is still a challenge for ambipolar nanomaterials to realize reconfigurable polarity control and rectification with a simplified device structure. Here, an air-gap barristor based on an asymmetric stacking sequence of the electrode contacts was developed to resolve these issues. For the 2D ambipolar channel of WSe2, the barristor can not only be reconfigured as an n- or p-type unipolar transistor but also work as a switchable diode. The air gap around the bottom electrode dominates the reconfigurable behaviors by widening the Schottky barrier here, thus blocking the injection of both electrons and holes. The electrical performances can be improved by optimizing the electrode materials, which achieve an on/off ratio of 104 for the transistor and a rectifying ratio of 105 for the diode. A complementary inverter and a switchable AND/OR logic gate were constructed by using the air-gap barristors as building blocks. This work provides an efficient approach with great potential for low-dimensional reconfigurable electronics.
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Affiliation(s)
- Guangqi Zhang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Gaotian Lu
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Xuanzhang Li
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Zhen Mei
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Liang Liang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Shoushan Fan
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Qunqing Li
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
| | - Yang Wei
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
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15
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Fortes PA, Gnass ED, Baez J, Bayati B, Mei Z, McGonigle AM, Ziman A, Ward DC. Management and Follow-up of Massive Fetomaternal Hemorrhage Requiring High-Dose Rh Immune Globulin. Am J Clin Pathol 2023:7075734. [PMID: 36897771 DOI: 10.1093/ajcp/aqad011] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/25/2023] [Indexed: 03/11/2023] Open
Abstract
OBJECTIVES Massive fetomaternal hemorrhage (FMH) is rare and reported to be the cause in approximately 3% of all fetal deaths. Maternal management of massive FMH includes prevention of Rh(D) alloimmunization in Rh(D)-negative mothers by administration of Rh(D) immune globulin (RhIG). METHODS We describe a case of a 30-year-old O-negative, primigravida woman who presented at 38 weeks of gestation with decreased fetal movements. She underwent an emergency cesarean section and delivered an O-positive baby girl who died shortly after birth. RESULTS The patient's FMH screen was positive, with a Kleihauer-Betke test demonstrating 10.7% fetal blood in maternal circulation. The calculated dose of 6,300 µg RhIG was given prior to discharge over 2 days using an intravenous (IV) preparation. Antibody screening a week after discharge showed anti-D and anti-C. The anti-C was attributed to acquired passive immunity from the large dose of RhIG. Anti-C reactivity waned and was negative at 6 months, but the anti-D pattern persisted at 9 months postdelivery. Negative antibody screens were noted at 12 and 14 months. CONCLUSIONS This case highlights the immunohematology challenges of IV RhIG as well as the success in preventing alloimmunization with IV RhIG given the patient's complete resolution of anti-C and no anti-D formation, with a subsequent healthy pregnancy.
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Affiliation(s)
- Precious Ann Fortes
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Esteban D Gnass
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Janet Baez
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | - Zhen Mei
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Andrea M McGonigle
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Alyssa Ziman
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Dawn C Ward
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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16
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Li X, Wei Y, Wang Z, Kong Y, Su Y, Lu G, Mei Z, Su Y, Zhang G, Xiao J, Liang L, Li J, Li Q, Zhang J, Fan S, Zhang Y. One-dimensional semimetal contacts to two-dimensional semiconductors. Nat Commun 2023; 14:111. [PMID: 36611034 PMCID: PMC9825564 DOI: 10.1038/s41467-022-35760-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/23/2022] [Indexed: 01/09/2023] Open
Abstract
Two-dimensional (2D) semiconductors are promising in channel length scaling of field-effect transistors (FETs) due to their excellent gate electrostatics. However, scaling of their contact length still remains a significant challenge because of the sharply raised contact resistance and the deteriorated metal conductivity at nanoscale. Here, we construct a 1D semimetal-2D semiconductor contact by employing single-walled carbon nanotube electrodes, which can push the contact length into the sub-2 nm region. Such 1D-2D heterostructures exhibit smaller van der Waals gaps than the 2D-2D ones, while the Schottky barrier height can be effectively tuned via gate potential to achieve Ohmic contact. We propose a longitudinal transmission line model for analyzing the potential and current distribution of devices in short contact limit, and use it to extract the 1D-2D contact resistivity which is as low as 10-6 Ω·cm2 for the ultra-short contacts. We further demonstrate that the semimetal nanotubes with gate-tunable work function could form good contacts to various 2D semiconductors including MoS2, WS2 and WSe2. The study on 1D semimetal contact provides a basis for further miniaturization of nanoelectronics in the future.
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Affiliation(s)
- Xuanzhang Li
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Yang Wei
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Zhijie Wang
- grid.12527.330000 0001 0662 3178Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 China
| | - Ya Kong
- grid.11135.370000 0001 2256 9319College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871 China
| | - Yipeng Su
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Gaotian Lu
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Zhen Mei
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Yi Su
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Guangqi Zhang
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Jianhua Xiao
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Liang Liang
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Jia Li
- grid.12527.330000 0001 0662 3178Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 China
| | - Qunqing Li
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Jin Zhang
- grid.11135.370000 0001 2256 9319College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871 China
| | - Shoushan Fan
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
| | - Yuegang Zhang
- grid.12527.330000 0001 0662 3178State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing, 100084 China
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17
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Abd-alaziz W, Jebur B, Fakhrey H, Mei Z, Rabie K. A Low-Complexity Coding Scheme for NOMA.. [DOI: 10.36227/techrxiv.21631832.v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
<p>This work focuses on exploiting the constructive interference among different users’ data waveforms to introduce new coding and decoding techniques, which are specifically designed for non-orthogonal multiple access (NOMA) systems. In this paper, a structured coding scheme is devised. In essence, the proposed technique focuses on finding a relationship between the sent users’ data waveforms and then uses this relationship in the decoding process at the receiving destination. It is worth pointing out that the proposed coding and decoding techniques exhibit better performance and reduced the complexity compared with the conventional uncoded NOMA. The complexity order evaluation shows that the proposed scheme attains a reduction in the required number of the floating point operations (FLOPs) of 5N and 6N at the second and third users, respectively, compared with that of the uncoded NOMA. Moreover, we have derived a closed-form expression for the bit-error rate (BER), which is verified using the Monte Carlo simulation. To demonstrate the practicality of the proposed system, the obtained results are compared with those of the uncoded and convolutional coding NOMA systems. Finally, the performance of the proposed system outperformed conventional systems by an average of 5 dB in the case of two users and an average of 15 dB in the case of three users in the same work environment.</p>
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18
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Abd-alaziz W, Jebur B, Fakhrey H, Mei Z, Rabie K. A Low-Complexity Coding Scheme for NOMA.. [DOI: 10.36227/techrxiv.21631832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
<p>This work focuses on exploiting the constructive interference among different users’ data waveforms to introduce new coding and decoding techniques, which are specifically designed for non-orthogonal multiple access (NOMA) systems. In this paper, a structured coding scheme is devised. In essence, the proposed technique focuses on finding a relationship between the sent users’ data waveforms and then uses this relationship in the decoding process at the receiving destination. It is worth pointing out that the proposed coding and decoding techniques exhibit better performance and reduced the complexity compared with the conventional uncoded NOMA. The complexity order evaluation shows that the proposed scheme attains a reduction in the required number of the floating point operations (FLOPs) of 5N and 6N at the second and third users, respectively, compared with that of the uncoded NOMA. Moreover, we have derived a closed-form expression for the bit-error rate (BER), which is verified using the Monte Carlo simulation. To demonstrate the practicality of the proposed system, the obtained results are compared with those of the uncoded and convolutional coding NOMA systems. Finally, the performance of the proposed system outperformed conventional systems by an average of 5 dB in the case of two users and an average of 15 dB in the case of three users in the same work environment.</p>
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Deng H, Khan MA, Liu X, Fu J, Mei Z. Identification of SCAR markers for genetic authentication of Dendrobium nobile Lindl. BRAZ J BIOL 2022; 82:e260394. [PMID: 35674573 DOI: 10.1590/1519-6984.260394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Dendrobium nobile Lindl. is an orcid plant with important medicinal values. This is a colourful houseplant, and also a popular herb in traditional Chinese medicine (TCM). The variants of this plant from different geographic regions might be high, and in this study, we aimed to develop specific sequence characterized amplified region (SCAR) markers for the identification of specific variant of this plant. Different cultivars of D. nobile were collected from nine different places of China, and one cultivar from Myanmar. DNA materials were extracted from the plant samples, random amplified polymorphic DNA (RAPD) were developed, cloned and sequenced for the development of SCAR markers. We have developed four SCAR markers, which are specific to the cultivar from Luzhou China, and clearly distinguishable (genetically) from other cultivars. These SCAR markers are deposited in GenBank (accession number MZ417502, MZ484089, MZ417504 and MZ417505). Four SCAR markers for D. nobile are effective molecular technique to genetically identify the different cultivars or species, and this method is applicable for genetic characterization and identification of other plant species too.
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Affiliation(s)
- H Deng
- Southwest Medical University, The Research Center for Preclinical Medicine, Luzhou, Sichuan, China
| | - M A Khan
- Southwest Medical University, The Research Center for Preclinical Medicine, Luzhou, Sichuan, China
| | - X Liu
- Southwest Medical University, The Research Center for Preclinical Medicine, Luzhou, Sichuan, China
| | - J Fu
- Southwest Medical University, The Research Center for Preclinical Medicine, Luzhou, Sichuan, China
| | - Z Mei
- Southwest Medical University, The Research Center for Preclinical Medicine, Luzhou, Sichuan, China
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20
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Mei Z, Qi L, Xu M, Sun Y. Weld feature extraction method based on inter-frame constraint and dynamic template. J Opt Soc Am A Opt Image Sci Vis 2022; 39:771-781. [PMID: 36215436 DOI: 10.1364/josaa.445585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 03/20/2022] [Indexed: 06/16/2023]
Abstract
Welding as an industrial tailor is key to intelligent manufacturing technology. With the development of robots and digital manufacturing technology, autonomous programming intelligent welding robots have emerged. The seam tracking system based on active vision is widely used because of its high precision and obvious characteristics. However, the complexity of the welding environment, the interference of arc splash, and the reflection and local deformation of the workpiece will affect the extraction of weld characteristics. Based on the correlation and difference of adjacent frames in the continuous welding process, this paper combines the point and line characteristics of laser lines and proposes a weld feature extraction method based on an inter-frame constraint and dynamic template. The experimental results show that the distance error of the proposed method is within three pixels, and the average processing time of each frame is 9.6 ms. This method can realize weld feature extraction in the case of object reflection, arc splash, and local deformation, and has certain robustness.
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21
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Carll T, Mei Z, Aldarweesh F, Wool GD. Alloimmunization rates in transfused patients receiving anti-CD47 antibody therapy. Transfusion 2022; 62:916-918. [PMID: 35383955 DOI: 10.1111/trf.16825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Timothy Carll
- Department of Pathology, University of Chicago, Chicago, Illinois, USA
| | - Zhen Mei
- Department of Pathology, University of California - Los Angeles, Los Angeles, California, USA
| | - Fatima Aldarweesh
- Department of Pathology, University of Chicago, Chicago, Illinois, USA
| | - Geoffrey D Wool
- Department of Pathology, University of Chicago, Chicago, Illinois, USA
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22
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Campbell E, Alfaro-Shigueto J, Aliaga-Rossel E, Beasley I, Briceño Y, Caballero S, da Silva VMF, Gilleman C, Gravena W, Hines E, Shahnawaz Khan M, Khan U, Kreb D, Mangel JC, Marmontel M, Mei Z, Mintzer VJ, Mosquera-Guerra F, Oliveira-da_Costa MO, Paschoalini Frias M, Paudel S, Sinha RK, Smith BD, Turvey ST, Utreras V, Van Damme PA, Wang D, Sayuri Whitty T, Thurstan RH, Godley BJ. Challenges and priorities for river cetacean conservation. ENDANGER SPECIES RES 2022. [DOI: 10.3354/esr01201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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23
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Sheykhsoltan M, Wu W, Mei Z, Ward DC, Ziman A. Who donates? Patterns of blood donation and donor characteristics at a university-affiliated hospital-based donor center. Transfusion 2021; 62:346-354. [PMID: 34859437 DOI: 10.1111/trf.16754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/13/2021] [Accepted: 11/14/2021] [Indexed: 01/28/2023]
Abstract
BACKGROUND Blood donors are a crucial element of the blood supply chain. Optimal recruitment strategies built upon the robust understanding of local donor behavior and demographics-specifically, the donor characteristics of our university-affiliated hospital-based donor center-improve outreach and retention of donors. STUDY DESIGN AND METHODS This retrospective study analyzed blood donors' genders, ethnicities, and donation frequencies at a university-affiliated hospital-based donor center from 2014-2019, stratified into seven age cohorts. Donor ethnicity demographics were compared to the reported student, employee, and LA County population. RESULTS Female donors outnumbered male donors in all age cohorts. The majority of donors self-identified (SI) as White (36.7%), Hispanic/Latino (21.6%), or Asian (19.1%). Older donors (age > 25) donated more frequently (4.1 vs. 2.3 donations per donor) than younger donors (age ≤ 25). Repeat donors who donated in multiple years during the study period were more likely to donate multiple times each year than those donors who only donated during 1 year. DISCUSSION Our donor demographics more closely reflect the university student and employee demographics than LA County demographics, demonstrating the broad local efforts of recruitment by student groups and donor center recruitment staff. However, non-White populations continue to be underrepresented. The majority of donors only donated once during the study period. Recruitment strategies to increase donor engagement among underrepresented populations and increase the proportion of repeat donors are likely to prove most beneficial.
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Affiliation(s)
| | - Wesley Wu
- University of California Los Angeles, Los Angeles, California, USA
| | - Zhen Mei
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Dawn C Ward
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Alyssa Ziman
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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24
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Jacquot C, Mei Z, Khan J, Dunbar N, Delaney M, Ziman A. Current state and positive impact of hospital-based blood donor centers in the United States. Transfusion 2021; 62:279-285. [PMID: 34778986 DOI: 10.1111/trf.16734] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 12/31/2022]
Abstract
BACKGROUND The COVID-19 pandemic has brought tremendous challenges to the United States blood supply. Decreased collections have caused blood product shortages. The number of hospital-based donor centers (HBDCs) has decreased in the past decades, but they provide important support to their hospital systems. MATERIALS/METHODS We identified 79 active HBDCs through an information request to the FDA. These centers were invited to participate in a survey about their activities, blood product collections, and perceived value. RESULTS Thirty-six centers responded (46% response rate). The centers represented a wide range of states and geographic settings. Whole blood collection was most common, but some respondents also prepared specialized products such as COVID-19 convalescent plasma and pathogen-reduced platelets. Positive impacts of HBDCs included inventory availability, cost-effectiveness/savings, community outreach, supporting special patient populations, and collecting specialty products. All respondents anticipate at least stable operations, if not growth, in the future. CONCLUSION HBDCs continue to be valuable assets in addressing emerging patient transfusion needs. Their unique offerings are tailored to the populations their hospitals support, and demonstrate the value in having the collection infrastructure in place to rapidly respond to critical shortages. This survey provides benchmark data about a broad group of HBDCs including products prepared, inventory self-sufficiency levels, and reasons for positive impact.
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Affiliation(s)
- Cyril Jacquot
- Children's National Hospital, Washington, DC, USA.,George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Zhen Mei
- UCLA Health, Los Angeles, California, USA.,David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Jenna Khan
- Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.,Dartmouth Geisel School of Medicine, Lebanon, New Hampshire, USA
| | - Nancy Dunbar
- Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.,Dartmouth Geisel School of Medicine, Lebanon, New Hampshire, USA
| | - Meghan Delaney
- Children's National Hospital, Washington, DC, USA.,George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Alyssa Ziman
- UCLA Health, Los Angeles, California, USA.,David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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25
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Liou S, Bakic L, Manakelew B, Guillermo F, McGonigle AM, Ziman A, Ward DC, Mei Z. False anemia due to total parenteral nutrition and lipid emulsion contamination. Transfusion 2021; 62:14-15. [PMID: 34739730 DOI: 10.1111/trf.16728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 10/01/2021] [Accepted: 10/10/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Sofia Liou
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Lissette Bakic
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | | | - Floricel Guillermo
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Andrea M McGonigle
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Alyssa Ziman
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Dawn C Ward
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
| | - Zhen Mei
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, California, USA
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26
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Xiao Y, Wang H, Tang Y, Yan J, Cao L, Chen Z, Shao Z, Mei Z, Jiang Z. Increased risk of diabetes in cancer survivors: a pooled analysis of 13 population-based cohort studies. ESMO Open 2021; 6:100218. [PMID: 34303930 PMCID: PMC8327494 DOI: 10.1016/j.esmoop.2021.100218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/25/2021] [Accepted: 06/28/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Diabetes is considered as an established risk factor for cancer development. However, the link between diabetes among cancer survivors remains inconclusive. The hypothesis of this study was to assess the hazard ratio (HR) of incidence of diabetes in cancer survivors compared with the HR in the general population. PATIENTS AND METHODS A comprehensive literature search was performed in PubMed, Embase, and the Cochrane Library from database inception to 15 December 2020 for population-based cohort studies. Summary effect estimates were combined using random-effects models. We also performed subgroup analyses to test sources of heterogeneity and the stability of the results stratified by various study and participant characteristics. RESULTS Thirteen population-based cohort studies involving 1 686 595 participants were analyzed. The HR for the development of diabetes in cancer survivors was 1.39 [95% confidence interval (CI) 1.29-1.50; I2 = 82.3%; P < 0.001] compared with that in noncancer controls, among which survivors of hematological, gynecologic, breast, colorectal and urinary tract cancer (all P < 0.05) showed consistent significant results, whereas no significant increased risk was observed for other cancer types. The effects were more prominent in populations of shorter cancer survival duration (<1 year) (HR 2.09, 95% CI 1.32-3.32; P = 0.009). Moreover, cancer survivors with a longer follow-up period (>10 years) had a relatively higher risk of diabetes (HR 1.54, 95% CI 1.34-1.77) than those with a shorter follow-up period. CONCLUSIONS In this large pooled analysis of population-based cohorts, evidence supports the hypothesis that the risk of developing diabetes is increased in cancer survivors compared with the general population. We should interpret the results with caution for considerable interstudy heterogeneity. However, health policy makers should take this as a challenge for the early prevention and effective intervention of diabetes.
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Affiliation(s)
- Y Xiao
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - H Wang
- Department of Colorectal Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Y Tang
- National Clinical Research Center for Metabolic Diseases, Key Laboratory of Diabetes Immunology, Ministry of Education, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - J Yan
- Department of Endocrinology, The First People's Hospital of Pingjiang, Yueyang City, Hunan Province, China
| | - L Cao
- Department of Perioperative Research Center of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Z Chen
- Department of Perioperative Research Center of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Z Shao
- Department of General Surgery, Changhai Hospital, Naval Medical University, Shanghai, China.
| | - Z Mei
- Department of Anorectal Surgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China; Anorectal Disease Institute of Shuguang Hospital, Shanghai, China.
| | - Z Jiang
- Department of Perioperative Research Center of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
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27
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Huang Y, Sun X, Jiang H, Yu S, Robins C, Armstrong MJ, Li R, Mei Z, Shi X, Gerasimov ES, De Jager PL, Bennett DA, Wingo AP, Jin P, Wingo TS, Qin ZS. A machine learning approach to brain epigenetic analysis reveals kinases associated with Alzheimer's disease. Nat Commun 2021; 12:4472. [PMID: 34294691 PMCID: PMC8298578 DOI: 10.1038/s41467-021-24710-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 06/28/2021] [Indexed: 12/21/2022] Open
Abstract
Alzheimer's disease (AD) is influenced by both genetic and environmental factors; thus, brain epigenomic alterations may provide insights into AD pathogenesis. Multiple array-based Epigenome-Wide Association Studies (EWASs) have identified robust brain methylation changes in AD; however, array-based assays only test about 2% of all CpG sites in the genome. Here, we develop EWASplus, a computational method that uses a supervised machine learning strategy to extend EWAS coverage to the entire genome. Application to six AD-related traits predicts hundreds of new significant brain CpGs associated with AD, some of which are further validated experimentally. EWASplus also performs well on data collected from independent cohorts and different brain regions. Genes found near top EWASplus loci are enriched for kinases and for genes with evidence for physical interactions with known AD genes. In this work, we show that EWASplus implicates additional epigenetic loci for AD that are not found using array-based AD EWASs.
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Affiliation(s)
- Yanting Huang
- Department of Computer Science, Emory University, Atlanta, GA, USA
| | - Xiaobo Sun
- Department of Mathematical and Statistical Finance, School of Statistics and Mathematics, Zhongnan University of Economics and Laws, Wuhan, Hubei, China.
| | - Huige Jiang
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Shaojun Yu
- Department of Computer Science, Emory University, Atlanta, GA, USA
| | - Chloe Robins
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Matthew J Armstrong
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Ronghua Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Zhen Mei
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Xiaochuan Shi
- Department of Statistics, University of Washington, Seattle, WA, USA
| | | | - Philip L De Jager
- Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Aliza P Wingo
- Division of Mental Health, Atlanta VA Medical Center, Decatur, GA, USA
- Department of Psychiatry, Emory University School of Medicine, Atlanta, GA, USA
| | - Peng Jin
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Thomas S Wingo
- Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA.
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA.
| | - Zhaohui S Qin
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
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28
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Mei Z, McGonigle AM, Ward D, Ziman A. Macroscopic and microscopic visual inspection of a formed clot in a cryoprecipitate unit. Transfusion 2021; 61:2526-2527. [PMID: 34196008 DOI: 10.1111/trf.16575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Zhen Mei
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Andrea M McGonigle
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Dawn Ward
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Alyssa Ziman
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, California, USA
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29
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Wang J, Qiao JD, Liu XR, Liu DT, Chen YH, Wu Y, Sun Y, Yu J, Ren RN, Mei Z, Liu YX, Shi YW, Jiang M, Lin SM, He N, Li B, Bian WJ, Li BM, Yi YH, Su T, Liu HK, Gu WY, Liao WP. UNC13B variants associated with partial epilepsy with favourable outcome. Brain 2021; 144:3050-3060. [PMID: 33876820 PMCID: PMC8634081 DOI: 10.1093/brain/awab164] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [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: 01/07/2021] [Revised: 03/25/2021] [Accepted: 04/03/2021] [Indexed: 11/12/2022] Open
Abstract
The unc-13 homolog B (UNC13B) gene encodes a presynaptic protein, mammalian uncoordinated 13-2 (Munc13-2), that is highly expressed in the brain-predominantly in the cerebral cortex-and plays an essential role in synaptic vesicle priming and fusion, potentially affecting neuronal excitability. However, the functional significance of UNC13B mutation in human disease is not known. In this study we screened for novel genetic variants in a cohort of 446 unrelated cases (families) with partial epilepsy without acquired causes by trio-based whole-exome sequencing. UNC13B variants were identified in 12 individuals affected by partial epilepsy and/or febrile seizures from eight unrelated families. The eight probands all had focal seizures and focal discharges in EEG recordings, including two patients who experienced frequent daily seizures and one who showed abnormalities in the hippocampus by brain MRI; however, all of the patients showed favorable outcome without intellectual or developmental abnormalities. The identified UNC13B variants included one nonsense variant, two variants at or around a splice site, one compound heterozygous missense variant, and four missense variants that cosegregated in the families. The frequency of UNC13B variants identified in the present study was significantly higher than that in a control cohort of Han Chinese and controls of the East Asian and all populations in the Genome Aggregation Database. Computational modeling, including hydrogen bond and docking analyses, suggested that the variants lead to functional impairment. In Drosophila, seizure rate and duration were increased by Unc13b knockdown compared to wild-type flies, but these effects were less pronounced than in sodium voltage-gated channel alpha subunit 1 (Scn1a) knockdown Drosophila. Electrophysiologic recordings showed that excitatory neurons in Unc13b-deficient flies exhibited increased excitability. These results suggest that UNC13B is potentially associated with epilepsy. The frequent daily seizures and hippocampal abnormalities but ultimately favorable outcome under antiepileptic therapy in our patients indicate that partial epilepsy caused by UNC13B variant is a clinically manageable condition.
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Affiliation(s)
- Jie Wang
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Jing-Da Qiao
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Xiao-Rong Liu
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - De-Tian Liu
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Yan-Hui Chen
- Department of Pediatrics, Fujian Medical University Union Hospital, Fujian, China
| | - Yi Wu
- Department of Pediatrics, Fujian Medical University Union Hospital, Fujian, China
| | - Yan Sun
- Department of Pediatrics, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
| | - Jing Yu
- Department of Pediatrics, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
| | - Rong-Na Ren
- Department of Pediatrics and Neurosurgery, 900 Hospital of the Joint Logistics Team, Fujian, China
| | - Zhen Mei
- Department of Pediatrics and Neurosurgery, 900 Hospital of the Joint Logistics Team, Fujian, China
| | - Yu-Xi Liu
- Department of Neurology, The First Affiliated Hospital of Shanxi Medical University, Shanxi, China
| | - Yi-Wu Shi
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Mi Jiang
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Si-Mei Lin
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Na He
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Bin Li
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Wen-Jun Bian
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Bing-Mei Li
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Yong-Hong Yi
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Tao Su
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | | | - Wei-Yue Gu
- Chigene (Beijing) Translational Medical Research Center Co., Beijing, China
| | - Wei-Ping Liao
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
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30
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Hata A, Hata M, Guo Y, Mei Z, Manafi A, Mahgoub B, Li D, Banerjee A, Yoshino I, Barker T, Krupnick A. Fibroblast Expression of Thy-1 Protects Grafts from Chronic Lung Allograft Dysfunction. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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31
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Petringa G, Pandola L, Agosteo S, Catalano R, Colautti P, Conte V, Cuttone G, Fan K, Mei Z, Rosenfeld A, Selva A, Cirrone GAP. Monte Carlo implementation of new algorithms for the evaluation of averaged-dose and -track linear energy transfers in 62 MeV clinical proton beams. ACTA ACUST UNITED AC 2020; 65:235043. [DOI: 10.1088/1361-6560/abaeb9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Mei Z, Zhang Y, Gee AP, Gee A, Mei Z. Stability of adenoviral vectors used in gene therapy. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.391] [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: 10/24/2022]
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33
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Dai H, Mei Z, An A, Lu Y, Wu J. Associations of sleep problems with health-risk behaviors and psychological well-being among Canadian adults. Sleep Health 2020; 6:657-661. [PMID: 32147359 DOI: 10.1016/j.sleh.2020.02.003] [Citation(s) in RCA: 4] [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: 10/01/2019] [Revised: 01/06/2020] [Accepted: 02/03/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Examine the associations of sleep problems with health-risk behaviors and psychological well-being in a representative sample of Canadian adults. DESIGN Cross-sectional. SETTING The 2011-2012 Canadian Community Health Survey (CCHS, conducted by Statistics Canada). PARTICIPANTS Of all individuals taking part in the 2011-2012 CCHS, 42,600 participants aged ≥18 years from five provinces/territories (Nova Scotia, Quebec, Manitoba, Alberta, and Yukon) who participated in the sleep survey module were selected for this study. MEASUREMENTS Health conditions were self-reported. Sleep problems referred to extreme sleep durations (either <5 or ≥10 hours) and insomnia symptom. Health-risk behaviors included physical inactivity, daily smoking, highly sedentary behavior, and insufficient fruit and vegetable consumption. Worse psychological well-being included having worse self-rated general health, worse self-rated mental health, and worse sense of belonging, and being dissatisfied with life. RESULTS The participants represented 10,614,600 Canadian adults aged ≥18 years from the five abovementioned provinces/territories. A significantly higher prevalence of all health-risk behaviors and worse psychological well-being was found among participants with extreme sleep durations (than those with 7 to <8 hours) and insomnia symptom (than those without insomnia symptom). After multivariate adjustment, extreme sleep durations and insomnia symptom were still independently associated with increased odds of all health-risk behaviors and worse psychological well-being. CONCLUSIONS Both extreme sleep durations and insomnia symptom were independently associated with health-risk behaviors and worse psychological well-being among Canadian adults.
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Affiliation(s)
- Haijiang Dai
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada; Center of Clinical Pharmacology, the Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhen Mei
- Manifold Data Mining, Toronto, Ontario, Canada
| | - Aijun An
- Department of Electrical Engineering and Computer Science, York University, Toronto, Ontario, Canada
| | - Yao Lu
- Center of Clinical Pharmacology, the Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Jianhong Wu
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada.
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34
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Dai H, Mei Z, An A, Wu J. Epidemiology of physical and mental comorbidity in Canada and implications for health-related quality of life, suicidal ideation, and healthcare utilization: A nationwide cross-sectional study. J Affect Disord 2020; 263:209-215. [PMID: 31818778 DOI: 10.1016/j.jad.2019.11.146] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 11/12/2019] [Accepted: 11/30/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND The substantial burden of physical and mental comorbidity is increasingly gaining attention, but a comprehensive evaluation of this is limited in Canada. This study aimed to investigate the prevalence of physical and mental comorbidity and its implications in Canada. METHODS We used nationally representative data from Canadian Community Health Survey, 2014. We included individuals who were aged ≥18 years and excluded those who had missing information on physical or mental disorders. Chronic diseases referred to both physical and mental disorders. RESULTS Respondents included in our analysis represented 27,221,856 Canadians aged ≥18 years. Of these, 53.9% (95% CI 53.1-54.6) had one or more chronic diseases, 11.5% (95% CI 11.0-12.0) had mental disorder, and 8.4% (95% CI 8.0-8.8) had physical and mental comorbidity. Compared with those without chronic diseases, people with one or more chronic diseases had higher sex- and age-adjusted prevalence of severe impairment of health-related quality of life (HRQoL), suicidal ideation, and healthcare utilization; and the risks increased consistently with the number of chronic diseases. However, among those with the same number of chronic diseases, people with mental disorder or physical and mental comorbidity were more likely to have these adverse consequences than people with only physical disorders. LIMITATIONS Our study was based on self-reported data, and included only major chronic diseases rather than all probable chronic diseases. CONCLUSIONS Physical and mental comorbidity is prevalent in Canada and should be addressed with appropriate interventions considering its excessive adverse impact on HRQoL, suicidal ideation and healthcare utilization.
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Affiliation(s)
- Haijiang Dai
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, Ontario M3J 1P3, Canada.
| | - Zhen Mei
- Manifold Data Mining, Toronto, Ontario, Canada
| | - Aijun An
- Department of Electrical Engineering and Computer Science, York University, Toronto, Ontario, Canada
| | - Jianhong Wu
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, Ontario M3J 1P3, Canada.
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35
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Gan J, Mei Z, Chen X, Zhou Y, Ge MF. A Modified Duhem Model for Rate-Dependent Hysteresis Behaviors. Micromachines (Basel) 2019; 10:mi10100680. [PMID: 31601027 PMCID: PMC6843297 DOI: 10.3390/mi10100680] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/03/2019] [Accepted: 10/07/2019] [Indexed: 11/16/2022]
Abstract
Hysteresis behaviors are inherent characteristics of piezoelectric ceramic actuators. The classical Duhem model (CDM) as a popular hysteresis model has been widely used, but cannot precisely describe rate-dependent hysteresis behaviors at high-frequency and high-amplitude excitations. To describe such behaviors more precisely, this paper presents a modified Duhem model (MDM) by introducing trigonometric functions based on the analysis of the existing experimental data. The MDM parameters are also identified by using the nonlinear least squares method. Six groups of experiments with different frequencies or amplitudes are conducted to evaluate the MDM performance. The research results demonstrate that the MDM can more precisely characterize the rate-dependent hysteresis behaviors comparing with the CDM at high-frequency and high-amplitude excitations.
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Affiliation(s)
- Jinqiang Gan
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Zhen Mei
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Xiaoli Chen
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Ye Zhou
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Ming-Feng Ge
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China.
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36
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Abstract
Novel monoclonal antibody therapies are increasing in number and clinical significance as their role in oncologic formularies expands. Anti-CD38 and anti-CD47/SIRPα agents commonly interfere with pretransfusion compatibility testing. Anti-CD38 interference is mitigated by dithiothreitol, which disrupts CD38 antigen on reagent red cells; however, this modification limits rule-out of all clinically significant antibodies. Several anti-CD47 agents are in clinical trials and demonstrate wide variability in pretransfusion testing interference. Modifications to pretransfusion testing can limit interference by anti-CD47 agents. Rapid dissemination of knowledge of these monoclonal antibody agents to the broader transfusion medicine community is paramount for continued patient transfusion safety.
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Affiliation(s)
- Zhen Mei
- University of Chicago Medicine, 5841 South Maryland Avenue, AMB S339, MC 3083, Chicago, IL 60637, USA
| | - Geoffrey D Wool
- Department of Pathology, University of Chicago, 5841 South Maryland Avenue, AMB S339, MC 3083, Chicago, IL 60637, USA.
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37
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Ramos C, Torrano V, Bilgi M, Gerken C, Dakhova O, Mei Z, Wu M, Grilley B, Gee A, Rooney C, Dotti G, Savoldo B, Heslop H, Brenner M. CD30-CHIMERIC ANTIGEN RECEPTOR (CAR) T CELLS FOR THERAPY OF HODGKIN LYMPHOMA (HL). Hematol Oncol 2019. [DOI: 10.1002/hon.125_2629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- C.A. Ramos
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - V. Torrano
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - M. Bilgi
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - C. Gerken
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - O. Dakhova
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - Z. Mei
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - M. Wu
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - B. Grilley
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - A.P. Gee
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - C.M. Rooney
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - G. Dotti
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - B. Savoldo
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - H.E. Heslop
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
| | - M.K. Brenner
- Center for Cell and Gene Therapy; Baylor College of Medicine, Texas Children's Hospital & Houston Methodist Hospital; Houston United States
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38
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Dai H, Mei Z, An A, Wu J. Association between sleep problems and health-related quality of life in Canadian adults with chronic diseases. Sleep Med 2019; 61:26-30. [PMID: 31255481 DOI: 10.1016/j.sleep.2019.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 04/29/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVES This study aimed to explore the association between sleep problems and health-related quality of life (HRQoL) in Canadian adults with chronic diseases, and whether mental illness can mediate the association. METHODS Data were drawn from the Canadian Community Health Survey, 2015. A total of 10,900 participants aged ≥18 years and diagnosed with chronic diseases were enrolled in this study. RESULTS Of these participants, 23.6% (95% CI 22.1, 25.2) suffered from severe impairment of HRQoL. Extreme sleep durations, including both short (<5, 5 to <6, and 6 to <7 h) and long (9 to <10, and ≥10 h) sleep durations, were significantly associated with severe impairment of HRQoL (compared to 7 to <8 h). Insomnia was also independently associated with severe impairment of HRQoL when compared to those without insomnia. In the mediation analyses, mental illness was shown to partly mediate the associations of extreme sleep durations and insomnia with severe impairment of HRQoL. CONCLUSIONS In conclusion, both extreme sleep durations and insomnia were independently associated with severe impairment of HRQoL in adults with chronic diseases, and mental illness partly mediated the association.
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Affiliation(s)
- Haijiang Dai
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, M3J 1P3, Canada.
| | - Zhen Mei
- Manifold Data Mining, Toronto, M3B 3J5, Canada
| | - Aijun An
- Department of Electrical Engineering and Computer Science, York University, Toronto, M3J 1P3, Canada
| | - Jianhong Wu
- Centre for Disease Modelling, Department of Mathematics and Statistics, York University, Toronto, M3J 1P3, Canada.
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39
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Guo Y, Wang Q, Li D, Manafi A, Mei Z, Onyema O, Gelman A, Kreisel D, Krupnick A. Microbiome Dependent Regulatory T Cell Generation Correlates with Acute and Chronic Lung Allograft Rejection in a Murine Model. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.192] [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: 10/27/2022] Open
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40
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Xiong L, Barrett AN, Hua R, Ho SSY, Jun L, Chan KCA, Mei Z, Choolani M. Non-invasive prenatal testing for fetal inheritance of maternal β
-thalassaemia mutations using targeted sequencing and relative mutation dosage: a feasibility study. BJOG 2018; 125:461-468. [DOI: 10.1111/1471-0528.15045] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2017] [Indexed: 11/26/2022]
Affiliation(s)
- L Xiong
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - AN Barrett
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| | - R Hua
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - SSY Ho
- Department of Laboratory Medicine; Molecular Diagnosis Centre; National University Hospital; Singapore
| | - L Jun
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| | - KCA Chan
- Centre for Research into Circulating Fetal Nucleic Acids; Li Ka Shing Institute of Health Sciences; Chinese University of Hong Kong; Shatin New Territories Hong Kong
| | - Z Mei
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - M Choolani
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
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41
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Abd-Alaziz W, Mei Z, Johnston M, Le Goff S. Non-binary turbo-coded OFDM-PLC system in the presence of impulsive noise. 2017 25th European Signal Processing Conference (EUSIPCO) 2017. [DOI: 10.23919/eusipco.2017.8081676] [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: 09/01/2023]
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42
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Tian L, Tang A, Zhang X, Mei Z, Liu F, Li J, Li X, Ai F, Wang X, Shen S. Incomplete ileus and hemafecia as the presenting features of multi-organ involved primary systemic AL amyloidosis: a rare case report. BMC Gastroenterol 2017; 17:72. [PMID: 28583087 PMCID: PMC5460434 DOI: 10.1186/s12876-017-0628-3] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 05/19/2017] [Indexed: 11/10/2022] Open
Abstract
Background AL Amyloidosis is known to be a systemic disease affecting multiple organs and tissue while it’s rare that patients present with gastrointestinal symptoms at first and later develop multiple-organ dysfuction. Clinical signs are not specific and the diagnosis is rarely given before performing immunofixation and endoscopy with multiple biopsies. We would like to emphasize the value of precise diagnostic process of AL amyloidosis. Case presentation In this case report, we describe a 56-year-old man who presented with recurrent periumbilical pain for 4 months and gradually worsened over a month. After a series of tests, he was finally diagnosed with primary systemic AL amyloidosis. He was treated with a chemotherapy regimen (Melphalan, dexamethasone and thalidomide) achieving a good clinical response. Conclusion On account of the high misdiagnosis rate, establishing the most precise diagnosis in first time with typing amyloidogenic protein becomes increasingly vital. Although the presenting feature is usually nonspecific, AL amyloidosis ought to be considered when multiple organs are involved in a short period.
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Affiliation(s)
- Li Tian
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Anliu Tang
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Xian Zhang
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Zhen Mei
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Fen Liu
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Jingbo Li
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Xiayu Li
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Feiyan Ai
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Xiaoyan Wang
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China
| | - Shourong Shen
- The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District Changsha, Hunan, 410013, China.
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43
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Mei Z, Mikrut K, Miller J. HELLP Syndrome as a Potential Cause of False Positive Lupus Anticoagulant Testing. Am J Clin Pathol 2017. [DOI: 10.1093/ajcp/aqw191.035] [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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44
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Mei Z, Zhang X, Yi J, Huang J, He J, Tao Y. Sirtuins in metabolism, DNA repair and cancer. J Exp Clin Cancer Res 2016; 35:182. [PMID: 27916001 PMCID: PMC5137222 DOI: 10.1186/s13046-016-0461-5] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 11/19/2016] [Indexed: 12/12/2022]
Abstract
The mammalian sirtuin family has attracted tremendous attention over the past few years as stress adaptors and post-translational modifier. They have involved in diverse cellular processes including DNA repair, energy metabolism, and tumorigenesis. Notably, genomic instability and metabolic reprogramming are two of characteristic hallmarks in cancer. In this review, we summarize current knowledge on the functions of sirtuins mainly regarding DNA repair and energy metabolism, and further discuss the implication of sirtuins in cancer specifically by regulating genome integrity and cancer-related metabolism.
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Affiliation(s)
- Zhen Mei
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China.,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China
| | - Xian Zhang
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China.,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China
| | - Jiarong Yi
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China.,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China
| | - Junjie Huang
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China.,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China
| | - Jian He
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China.,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan, 410008, China. .,Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan, 410078, China.
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45
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Yang PF, Shang MC, Lin Q, Xiao H, Mei Z, Jia YZ, Liu W, Zhong ZH. Three-dimensional intracranial EEG monitoring in presurgical assessment of MRI-negative frontal lobe epilepsy. Medicine (Baltimore) 2016; 95:e5192. [PMID: 27977572 PMCID: PMC5268018 DOI: 10.1097/md.0000000000005192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 11/25/2022] Open
Abstract
Magnetic resonance imaging (MRI)-negative epilepsy is associated with poor clinical outcomes prognosis. The present study was aimed to assess whether intracranial 3D interictal and ictal electroencephalography (EEG) findings, a combination of EEG at a different depth, in addition to clinical, scalp EEG, and positron emission tomography-computed tomography (PETCT) data help to predict outcome in a series of patients with MRI-negative frontal lobe epilepsy (FLE) after surgery.Patients with MRI-negative FLE who were presurgically evaluated by 3D-intracranial EEG (3D-iEEG) recording were included. Outcome predictors were compared in patients with seizure freedom (group 1) and those with recurrent seizures (group 2) at least 24 months after surgery.Forty-seven patients (15 female) were included in this study. MRI was found normal in 38 patients, whereas a focal or regional hypometabolism was observed in 33 cases. Twenty-three patients (48.9%) were seizure-free (Engel class I), and 24 patients (51.1%) continued to have seizures (12 were class II, 7 were class III, and 5 were class IV). Detailed analysis of intracranial EEG revealed widespread (>2 cm) (17.4%:75%; P = 0.01) in contrast to focal seizure onset as well as shorter latency to onset of seizure spread (5.9 ± 7.1 s; 1.4 ± 2.9 s; P = 0.016) and to ictal involvement of brain structures beyond the frontal lobe (21.8 ± 20.3 s; 4.9 ± 5.1 s; P = 0.025) in patients without seizure freedom.The results suggest that presurgical evaluation using 3D-iEEG monitoring lead to a better surgical outcome as seizure free in MRI-negative FLE patients.
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Affiliation(s)
| | | | | | | | | | | | - Wei Liu
- Department of Pathology, Fuzhou General Hospital , Xiamen University Medical College, Fuzhou, China
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46
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Yang PF, Zhang HJ, Pei JS, Lin Q, Mei Z, Chen ZQ, Jia YZ, Zhong ZH, Zheng ZY. Neuropsychological outcomes of subtemporal selective amygdalohippocampectomy via a small craniotomy. J Neurosurg 2016; 125:67-74. [DOI: 10.3171/2015.6.jns1583] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT
The objectives of this study were to describe a novel minimal-access subtemporal approach for selective resection of the amygdala and hippocampus in patients with medically refractory mesial temporal lobe epilepsy (MTLE) due to hippocampal sclerosis, and to analyze the related outcomes.
METHODS
The authors analyzed data from all cases involving patients with unilateral MTLE due to hippocampal sclerosis who were treated with selective amygdalohippocampectomy via the posterior subtemporal approach through a relatively small craniotomy, without a neuronavigation system, at their institution during the period from September 2010 to September 2012. Data were obtained on baseline characteristics, preoperative evaluations of unilateral mesial temporal sclerosis, surgical complications, and Engel class seizure outcomes. All patients underwent memory testing, IQ testing, and language testing.
RESULTS
The mean duration of follow-up was 33.6 months (range 24–48 months). There were no deaths and no cases of significant postoperative morbidity. One patient had a mild complication. At 2-year follow-up, 19 patients were seizure free (Engel Class I outcome). Verbal memory scores obtained at 3 months and at 2 years after surgery were significantly lower than preoperative scores for patients who underwent surgery on the left side of the brain (p < 0.05). Pictorial memory scores were higher following surgery compared with before surgery regardless of whether patients underwent left- or right-sided brain surgery. There was also improvement in performance IQ and total IQ following surgery in both groups. For patients who underwent right-sided brain surgery, verbal comprehension and semantic fluency testing scores were significantly higher at both 3 months and 2 years after surgery than before surgery. For patients who underwent left-sided brain surgery, scores on all language tests were significantly lower at 3 months after surgery than before surgery. Verbal comprehension testing scores returned to the preoperative level at 2 years after surgery.
CONCLUSIONS
The posterior subtemporal approach through a relatively small craniotomy allows adequate exposure and safe resection of mesial temporal structures and effectively reduces medically intractable MTLE. It preserves IQ but may have a detrimental effect on verbal memory and language ability.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Zhi-Yong Zheng
- 4Pathology, Fuzhou General Hospital of Nanjing Command, PLA, Fuzhou, China
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47
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Dai Y, Yan Z, Jia L, Zhang S, Gao L, Wei X, Mei Z, Liu X. The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils. J Appl Microbiol 2016; 121:163-76. [PMID: 27123875 DOI: 10.1111/jam.13164] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/26/2015] [Accepted: 01/18/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Y. Dai
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - Z. Yan
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - L. Jia
- The State Key Laboratory of Biotherapy; West China Hospital; Sichuan University; Sichuan China
| | - S. Zhang
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - L. Gao
- Department of Agricultural Engineering; Chongqing Academy of Agricultural Sciences; Chongqing China
| | - X. Wei
- Department of Agricultural Engineering; Chongqing Academy of Agricultural Sciences; Chongqing China
| | - Z. Mei
- Center of Agricultural Engineering; Biogas Institute of Ministry of Agriculture; Chengdu China
| | - X. Liu
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
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48
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Abstract
Type 2 diabetes is growing worldwide due to population growth, increased rates of obesity, unhealthy diet, and physical inactivity. Risk assessment methods can effectively evaluate the risk of diabetes, and a healthy lifestyle can significantly reduce risk or prevent complications of type 2 diabetes. However, risk assessment alone has not significantly improved poor adherence to recommended medical interventions and lifestyle changes. This paper focuses on the challenge of nonadherence and posits that improving adherence requires tailoring interventions that explicitly consider the social determinants of health.
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Affiliation(s)
- Peter Tsasis
- School of Health Policy and Management, York University, Toronto, ON, Canada
| | - Jianhong Wu
- Centre for Disease Modelling, York University, Toronto, ON, Canada
| | - Aijun An
- Department of Electrical Engineering of Computer Science, York University, Toronto, ON, Canada
| | - Hannah J Wong
- School of Health Policy and Management, York University, Toronto, ON, Canada
| | - Xiandong An
- Department of Electrical Engineering of Computer Science, York University, Toronto, ON, Canada; Manifold Data Mining Inc., Toronto, ON, Canada
| | - Zhen Mei
- Manifold Data Mining Inc., Toronto, ON, Canada
| | - Ted Hains
- Manifold Data Mining Inc., Toronto, ON, Canada
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49
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Mei Z, Zhang Y, Cui L. 152P Association between statin use and cancer outcomes: a systematic review and meta-analysis of 92 cohorts including 703843 individuals. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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50
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Liu Y, Wang G, Yang Y, Mei Z, Liang Z, Cui A, Wu T, Liu CY, Cui L. Increased TEAD4 expression and nuclear localization in colorectal cancer promote epithelial-mesenchymal transition and metastasis in a YAP-independent manner. Oncogene 2015; 35:2789-800. [PMID: 26387538 DOI: 10.1038/onc.2015.342] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 07/20/2015] [Accepted: 07/24/2015] [Indexed: 12/22/2022]
Abstract
Dysregulation of the Hippo pathway occurs in a variety of cancers and often correlates with a poor prognosis. To further explore the potential role of Hippo pathway dysregulation in tumor development and progression, we investigated its downstream transcription factor TEAD4 in colorectal cancer (CRC). Increased expression and nuclear localization of TEAD4 were found in a significant portion of CRC tissues, in association with metastasis and a poor prognosis. In CRC cells, TEAD4 knockdown induced the mesenchymal-epithelial transition and decreased cell mobility in vitro and metastasis in vivo. Microarray analysis revealed that TEAD4 promoted cell adhesion and upregulated the epithelial-mesenchymal transition-related transcriptome in CRC cells. Vimentin was identified as a new direct target gene mediating TEAD4 function in CRC cells, whereby forced vimentin expression markedly reversed TEAD4-knockdown-induced cell morphological changes and decreased mobility. Interestingly, rescued expression of both WT TEAD4 and a Y429H mutant can reverse the mesenchymal-epithelial transition and increase vimentin expression, cell mobility and metastatic potential in TEAD4-knockdown CRC cells. The discrepant expression of YAP and TEAD4 in CRC tissues, the rescue ability of TEAD4 mutant defect in YAP binding and no effect on vimentin expression by YAP knockdown in CRC cells, all implicated a YAP-independent manner of TEAD4 function in CRC. Furthermore, vimentin positively correlated and CDH1 reversely correlated with the level of TEAD4 in CRC tissues and xenograft tumors. Our results suggest that TEAD4 nuclear expression can serve as a biomarker for CRC progression and poor prognosis. The transcription factor TEAD4 regulates a pro-metastasis transcription program in a YAP-independent manner in CRC, thus providing a novel mechanism of TEAD4 transcriptional regulation and its oncogenic role in CRC, independently of the Hippo pathway.
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Affiliation(s)
- Y Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - G Wang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Y Yang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China.,Center for Medical Research, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Z Mei
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - Z Liang
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - A Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - T Wu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - C-Y Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
| | - L Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Shanghai Colorectal Cancer Research Center, Shanghai, China
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