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Ye G, Xu X, Xue Z, Li Z, Liu X. Reducing the risk of tooth injury in anterior maxillary interdental osteotomy for cleft lip and palate patients using a surgical navigation technique. Int J Oral Maxillofac Surg 2024; 53:368-375. [PMID: 37805371 DOI: 10.1016/j.ijom.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/07/2023] [Accepted: 09/25/2023] [Indexed: 10/09/2023]
Abstract
The aim of this study was to investigate the clinical feasibility of preventing tooth injury from anterior maxillary interdental osteotomy by using a surgical navigation technique. A retrospective review was conducted on cleft lip and palate patients treated with anterior maxillary osteotomy followed by distraction osteogenesis between August 2019 and May 2022. Patients operated on through image guidance were enrolled in the navigation group, while those who were operated on freehand were enrolled in the freehand group. Tooth injuries were identified on postoperative images. Linear and angular deviations of the osteotomy line were measured. Twelve patients were enrolled in the study, seven in the navigation group and five in the freehand group. Altogether, 24 osteotomy lines and 53 adjacent teeth were evaluated. The dental injury rate was 3% in the navigation group and 27% in the freehand group (P = 0.016). The average linear deviations (mean ± standard deviation) were 0.67 ± 0.30 mm and 2.05 ± 1.33 mm, respectively (P < 0.001), while the average angular deviations were 1.67 ± 0.68° and 11.41 ± 7.46°, respectively (P < 0.001). The results suggest that navigation was able to reduce the tooth injury risk compared with freehand interdental osteotomies in crowded dental arches.
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Affiliation(s)
- G Ye
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - X Xu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Z Xue
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Z Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - X Liu
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.
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Suba K, Patel Y, Martin-Alonso A, Hansen B, Xu X, Roberts A, Norton M, Chung P, Shrewsbury J, Kwok R, Kalogianni V, Cheng S, Liu X, Kalyviotis K, Rutter GA, Jones B, Minnion J, Owen BM, Pantazis P, Distaso W, Drucker DJ, Tan TM, Bloom SR, Murphy KG, Salem V. Intra-islet glucagon signalling regulates beta-cell connectivity, first-phase insulin secretion and glucose homoeostasis. Mol Metab 2024:101947. [PMID: 38677509 DOI: 10.1016/j.molmet.2024.101947] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/26/2024] [Accepted: 04/19/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Type 2 diabetes (T2D) is characterised by the loss of first-phase insulin secretion. We studied mice with β-cell selective loss of the glucagon receptor (Gcgrfl/fl X Ins-1Cre), to investigate the role of intra-islet glucagon receptor signalling on pan-islet calcium activity and insulin secretion. METHODS Metabolic profiling was conducted on Gcgrβ-cell-/- and littermate controls. Crossing with GCaMP6f (STOP flox) animals further allowed for β-cell specific expression of a fluorescent calcium indicator. These islets were functionally imaged in vitro and in vivo. Wild-type mice were transplanted with islets expressing GCaMP6f in β-cells into the anterior eye chamber and placed on a high fat diet. Part of the cohort received a glucagon analogue (GCG-analogue) for 40 days and the control group were fed to achieve weight matching. Calcium imaging was performed regularly during the development of hyperglycaemia and in response to GCG-analogue treatment. RESULTS Gcgrβ-cell-/- mice exhibited higher glucose levels following intraperitoneal glucose challenge (control 12.7 mmol/L ± 0.6 vs. Gcgrβ-cell-/- 15.4 mmol/L ± 0.0 at 15 min, p = 0.002); fasting glycaemia was not different to controls. In vitro, Gcgrβ-cell-/- islets showed profound loss of pan-islet [Ca2+]I waves in response to glucose which was only partially rescued in vivo. Diet induced obesity and hyperglycaemia also resulted in a loss of co-ordinated [Ca2+]I waves in transplanted islets. This was reversed with GCG-analogue treatment, independently of weight-loss (n = 8). CONCLUSION These data provide novel evidence for the role of intra-islet GCGR signalling in sustaining synchronised [Ca2+]I waves and support a possible therapeutic role for glucagonergic agents to restore the insulin secretory capacity lost in T2D.
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Affiliation(s)
- K Suba
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom; Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - Y Patel
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - A Martin-Alonso
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - B Hansen
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - X Xu
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - A Roberts
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - M Norton
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - P Chung
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - J Shrewsbury
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - R Kwok
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - V Kalogianni
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - S Cheng
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - X Liu
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - K Kalyviotis
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - G A Rutter
- CHUM Research Center, University of Montreal, QC, Canada; Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom; Lee Kong Chian Imperial Medical School, Nanyang Technological University, Singapore
| | - B Jones
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - J Minnion
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - B M Owen
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - P Pantazis
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - W Distaso
- Imperial College Business School, Imperial College London, London SW7 2AZ, United Kingdom
| | - D J Drucker
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Canada
| | - T M Tan
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - S R Bloom
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - K G Murphy
- Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom
| | - V Salem
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom; Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom; Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, United Kingdom.
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Wei JA, Zhang Z, Chen L, Zhang Y, Gao Y, Shahzad A, Tao Z, Ma Q, Zhang B, Guo C, Shu L, Xu X, Yu Q, Wang L. Flexible Piezoresistive Sensors Based on PPy Granule-Anchored Multilayer Fibrous Membranes with a Wide Operating Range and High Sensitivity. ACS Appl Mater Interfaces 2024; 16:19421-19431. [PMID: 38568871 DOI: 10.1021/acsami.4c02635] [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: 04/05/2024]
Abstract
The employment of flexible piezoresistive sensors has sparked growing interest within the realm of wearable electronic devices, specifically in the fields of health detection and e-skin. Nevertheless, the advancement of piezoresistive sensors has been impeded by their limited sensitivity and restricted operating ranges. Consequently, it is imperative to fabricate sensors with heightened sensitivity and expanded operating ranges through the utilization of the appropriate methodologies. In this paper, piezoresistive sensors were fabricated utilizing electrospun polyvinylidene fluoride/polyacrylonitrile/polyethylene-polypropylene glycol multilayer fibrous membranes anchored with polypyrrole granules as the sensing layer, while electrospun thermoplastic polyurethane (TPU) fibers were employed as the flexible substrate. The sensitivity of the sensor is investigated by varying the fiber diameter of the sensing layer. The experimental findings reveal that a concentration of 14 wt % in the spinning solution exhibits high sensitivity (996.7 kPa-1) within a wide working range (0-10 kPa). This is attributed to the favorable diameter of the fibers prepared at this concentration, which facilitates the uniform in situ growth of pyrrole. The highly deformable TPU flexible fibers and multilayer sensing layer structure enable different linear responses across a broad pressure range (0-1 MPa). Furthermore, the sensor demonstrates good cyclic stability and can detect human movements under different pressures. These results suggest that the piezoresistive sensor with a wide operating range and high sensitivity has significant potential for future health monitoring and artificial intelligence applications.
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Affiliation(s)
- Ji-An Wei
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zhongliang Zhang
- School of Future Technology, South China University of Technology, Guangzhou 511422, China
- School of Microelectronics, South China University of Technology, Guangzhou 511422, China
| | - Lei Chen
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Yunjie Zhang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Yanyu Gao
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Asim Shahzad
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zhengheng Tao
- Shenzhen Municipal Engineering Design & Research Institute Co., Ltd., Shenzhen 518029, China
| | - Qianli Ma
- Shenzhen Municipal Engineering Design & Research Institute Co., Ltd., Shenzhen 518029, China
| | - Boxing Zhang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Chen Guo
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Lin Shu
- School of Future Technology, South China University of Technology, Guangzhou 511422, China
| | - Xiangmin Xu
- School of Future Technology, South China University of Technology, Guangzhou 511422, China
| | - Qianqian Yu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - LinGe Wang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
- Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou 510640, China
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Ye Q, Gast G, Wilfley EG, Huynh H, Hays C, Holmes TC, Xu X. Monosynaptic Rabies Tracing Reveals Sex- and Age-Dependent Dorsal Subiculum Connectivity Alterations in an Alzheimer's Disease Mouse Model. J Neurosci 2024; 44:e1796232024. [PMID: 38503494 PMCID: PMC11026364 DOI: 10.1523/jneurosci.1796-23.2024] [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: 09/19/2023] [Revised: 02/20/2024] [Accepted: 02/28/2024] [Indexed: 03/21/2024] Open
Abstract
The subiculum (SUB), a hippocampal formation structure, is among the earliest brain regions impacted in Alzheimer's disease (AD). Toward a better understanding of AD circuit-based mechanisms, we mapped synaptic circuit inputs to dorsal SUB using monosynaptic rabies tracing in the 5xFAD mouse model by quantitatively comparing the circuit connectivity of SUB excitatory neurons in age-matched controls and 5xFAD mice at different ages for both sexes. Input-mapped brain regions include the hippocampal subregions (CA1, CA2, CA3), medial septum and diagonal band, retrosplenial cortex, SUB, postsubiculum (postSUB), visual cortex, auditory cortex, somatosensory cortex, entorhinal cortex, thalamus, perirhinal cortex (Prh), ectorhinal cortex, and temporal association cortex. We find sex- and age-dependent changes in connectivity strengths and patterns of SUB presynaptic inputs from hippocampal subregions and other brain regions in 5xFAD mice compared with control mice. Significant sex differences for SUB inputs are found in 5xFAD mice for CA1, CA2, CA3, postSUB, Prh, lateral entorhinal cortex, and medial entorhinal cortex: all of these areas are critical for learning and memory. Notably, we find significant changes at different ages for visual cortical inputs to SUB. While the visual function is not ordinarily considered defective in AD, these specific connectivity changes reflect that altered visual circuitry contributes to learning and memory deficits. Our work provides new insights into SUB-directed neural circuit mechanisms during AD progression and supports the idea that neural circuit disruptions are a prominent feature of AD.
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Affiliation(s)
- Qiao Ye
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
- Department of Biomedical Engineering, University of California, Irvine, California 92697
| | - Gocylen Gast
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
| | - Erik George Wilfley
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
| | - Hanh Huynh
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
| | - Chelsea Hays
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
| | - Todd C Holmes
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California 92697
- Center for Neural Circuit Mapping, University of California, Irvine, California 92697
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, California 92697
- Department of Biomedical Engineering, University of California, Irvine, California 92697
- Center for Neural Circuit Mapping, University of California, Irvine, California 92697
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5
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Zhang W, Zhang X, Li L, Liao L, Zhao F, Zhong T, Pei Y, Xu X, Yang C, Zhang H, Li G. A joint brain extraction and image quality assessment framework for fetal brain MRI slices. Neuroimage 2024; 290:120560. [PMID: 38431181 DOI: 10.1016/j.neuroimage.2024.120560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024] Open
Abstract
Brain extraction and image quality assessment are two fundamental steps in fetal brain magnetic resonance imaging (MRI) 3D reconstruction and quantification. However, the randomness of fetal position and orientation, the variability of fetal brain morphology, maternal organs around the fetus, and the scarcity of data samples, all add excessive noise and impose a great challenge to automated brain extraction and quality assessment of fetal MRI slices. Conventionally, brain extraction and quality assessment are typically performed independently. However, both of them focus on the brain image representation, so they can be jointly optimized to ensure the network learns more effective features and avoid overfitting. To this end, we propose a novel two-stage dual-task deep learning framework with a brain localization stage and a dual-task stage for joint brain extraction and quality assessment of fetal MRI slices. Specifically, the dual-task module compactly contains a feature extraction module, a quality assessment head and a segmentation head with feature fusion for simultaneous brain extraction and quality assessment. Besides, a transformer architecture is introduced into the feature extraction module and the segmentation head. We utilize a multi-step training strategy to guarantee a stable and successful training of all modules. Finally, we validate our method by a 5-fold cross-validation and ablation study on a dataset with fetal brain MRI slices in different qualities, and perform a cross-dataset validation in addition. Experiments show that the proposed framework achieves very promising performance.
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Affiliation(s)
- Wenhao Zhang
- School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
| | - Xin Zhang
- School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China.
| | - Lingyi Li
- School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
| | - Lufan Liao
- School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
| | - Fenqiang Zhao
- Department of Radiology and BRIC, University of North Carolina at Chapel Hill, USA
| | - Tao Zhong
- Department of Radiology and BRIC, University of North Carolina at Chapel Hill, USA
| | - Yuchen Pei
- Department of Radiology and BRIC, University of North Carolina at Chapel Hill, USA
| | - Xiangmin Xu
- School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
| | - Chaoxiang Yang
- Department of Radiology, Guangdong Women and Children Hospital, Guangzhou, China
| | - He Zhang
- Department of Radiology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China.
| | - Gang Li
- Department of Radiology and BRIC, University of North Carolina at Chapel Hill, USA.
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Sharon CE, Tortorello GN, Ma KL, Huang AC, Xu X, Giles LR, McGettigan S, Kreider K, Schuchter LM, Mathew AJ, Amaravadi RK, Gimotty PA, Miura JT, Karakousis GC, Mitchell TC. Corrigendum to 'Long-term outcomes to neoadjuvant pembrolizumab based on pathological response for patients with resectable stage III/IV cutaneous melanoma': [Annals of Oncology 34 (2023) 806-812]. Ann Oncol 2024:S0923-7534(24)00076-0. [PMID: 38614876 DOI: 10.1016/j.annonc.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2024] Open
Affiliation(s)
- C E Sharon
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - G N Tortorello
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - K L Ma
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - A C Huang
- Department of Medicine and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - X Xu
- Department of Pathology and Laboratory Medicine
| | - L R Giles
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - S McGettigan
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - K Kreider
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - L M Schuchter
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - A J Mathew
- Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - R K Amaravadi
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - P A Gimotty
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - J T Miura
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - G C Karakousis
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - T C Mitchell
- Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia; Department of Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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7
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Niu ZR, Wu JH, Tan YJ, Luo DJ, Xu X. [Erdheim-Chester disease initially discovered at extraskeletal locations: a clinicopathological analysis of four cases]. Zhonghua Bing Li Xue Za Zhi 2024; 53:364-369. [PMID: 38556820 DOI: 10.3760/cma.j.cn112151-20230911-00160] [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] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Objective: To investigate the clinicopathological features of Erdheim-Chester disease (ECD) initially diagnosed at extraskeletal locations. Methods: Clinical and pathological data of four cases of ECD diagnosed initially in extraskeletal locations were collected at Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, from January 2013 to June 2023. BRAF V600E gene was detected by reverse transcription polymerase chain reaction (RT-PCR). Pertinent literatures were reviewed. Results: Four ECD patients included two males and two females ranging in ages from 2 years 11 months to 69 years. The lesions located in the lung (two cases), central nervous system (one case), and the testicle (one case) were collected in the study. One patient had occasional fever at night, one had nausea and vomiting, and two were asymptomatic. Radiologically, the two pulmonary ECD showed diffuse ground-glass nodules in both lungs, and the lesions in central nervous system and testicle both showed solid masses. Microscopically, there were infiltration of foamy histiocyte-like cells and multinucleated giant cells in a fibrotic background, accompanied by varying amounts of lymphocytes and plasma cells. The infiltration of tumor cells in pulmonary ECD was mainly seen in the subpleural area, interlobular septa, and perivascular and peribronchiolar areas. The fibrosis was more pronounced in the pleura and interlobular septa, and less pronounced in the alveolar septa. Immunohistochemical staining showed that all tumor cells expressed CD68, CD163 and Fa; one case showed S-100 expression; three cases were positive for BRAF V600E; all were negative for CD1α and Langerin. RT-PCR in all four cases showed BRAF V600E gene mutation. Conclusions: Extraskeletal ECD is often rare and occult, and could be easily misdiagnosed, requiring biopsy confirmation. The radiologic findings of pulmonary ECD is significantly different from other types of ECD, and the histopathological features of pronounced infiltration in the subpleura area, interlobular septa, perivascular and peribronchiolar areas can be helpful in the differential diagnosis from other pulmonary diseases. Detection of BRAF V600E gene mutation by RT-PCR and its expression by immunohistochemical staining are also helpful in the diagnosis.
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Affiliation(s)
- Z R Niu
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J H Wu
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y J Tan
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - D J Luo
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Xu
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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8
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Gao J, Wu R, Zhang YJ, Xu X, Sa RN, Li XA, Liu CY. Quantitative evaluation of bronchoalveolar lavage for the treatment of Severe mycoplasma pneumoniae pneumonia in children-A new complementary index: Bronchial Insufflation Sign Score. J Clin Ultrasound 2024. [PMID: 38581196 DOI: 10.1002/jcu.23678] [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] [Received: 12/10/2023] [Revised: 03/04/2024] [Accepted: 03/18/2024] [Indexed: 04/08/2024]
Abstract
OBJECTIVE The aim of this study was to investigate the value of Broncoplasma Insufflation Sign in lung ultrasound signs in assessing the efficacy of bronchoalveolar lavage in Severe mycoplasma pneumoniae pneumonia in children. METHODS Forty-seven children with Severe mycoplasma pneumoniae pneumonia were treated with medication and bronchial lavage. Laboratory and imaging results were collected, and lung ultrasonography was performed before bronchoalveolar lavage and 1, 3, and 7 days after lavage to record changes in Bronchial Insufflation Sign and changes in the extent of solid lung lesions. Factors affecting the effectiveness of bronchoalveolar lavage were analyzed using logistic regression and other factors. RESULTS Bronchial Insufflation Sign Score and the extent of lung solid lesions were the factors affecting the effectiveness of bronchoalveolar lavage treatment. The smaller the area of lung solid lesions and the higher the Bronchial Insufflation Sign Score, the more effective the results of bronchoalveolar lavage treatment were, and the difference was statistically significant, with a difference of p < 0.05. The Bronchial Insufflation Sign Score had the highest sensitivity and specificity for the prediction of the efficacy of bronchoalveolar lavage treatment in the first 7 days after the treatment. CONCLUSION Bronchial Insufflation Sign Score combined with the extent of solid lung lesions can assess the efficacy of bronchoalveolar lavage in the treatment of Severe mycoplasma pneumoniae pneumonia in children; lung ultrasound is a timely and effective means of assessing the efficacy of bronchoalveolar lavage.
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Affiliation(s)
- Jin Gao
- Baotou Medical College, Baotou, China
| | - R Wu
- Ordos Central Hospital, Ordos, China
| | - Y J Zhang
- Ordos Central Hospital, Ordos, China
| | - X Xu
- Ordos Central Hospital, Ordos, China
| | - R N Sa
- Ordos Central Hospital, Ordos, China
| | - X A Li
- Ordos Central Hospital, Ordos, China
| | - C Y Liu
- Baotou Medical College, Baotou, China
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Li HX, Xu X, Tan PX, Wang TH, Li BL, Zheng H, Yan T. [The effect of deep neuromuscular block combined with low pneumoperitoneum pressure on postoperative pain in patients undergoing laparoscopic radical colorectal surgery]. Zhonghua Yi Xue Za Zhi 2024; 104:1057-1063. [PMID: 38561301 DOI: 10.3760/cma.j.cn112137-20231011-00704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Objective: To investigate the effect of deep neuromuscular blockade (DNMB) combined with low pneumoperitoneum pressure anesthesia strategy on postoperative pain in patients undergoing laparoscopic colorectal surgery. Methods: This study was a randomized controlled trial. One hundred and twenty patients who underwent laparoscopic colorectal surgery at Cancer Hospital of Chinese Academy of Medical Sciences from December 1, 2022 to May 31, 2023 were selected and randomly divided into two groups by random number table method. Moderate neuromuscular blockade [train of four stimulations count (TOFC)=1-2] was maintained in patients of the control group (group C, n=60) and pneumoperitoneum pressure level was set at 15 mmHg(1 mmHg=0.133 kPa). DNMB [post-tonic stimulation count (PTC)=1-2] was maintained in patients of the DNMB combined with low pneumoperitoneum pressuregroup (group D, n=60) and pneumoperitoneum pressure level was set at 10 mmHg. The primary measurement was incidence of moderate to severe pain at 1 h after surgery. The secondary measurements the included incidence of moderate to severe pain at 1, 2, 3, 5 d and 3 months after surgery, the incidence of rescue analgesic drug use, the doses of sufentanil in analgesic pumps, surgical rating scale (SRS) score, the incidence of postoperative residual neuromuscular block, postoperative recovery [evaluated with length of post anesthesia care unit (PACU) stay, time of first exhaust and defecation after surgery and length of hospital stay] and postoperative inflammation conditions [evaluated with serum concentration of interleukin (IL)-1β and IL-6 at 1 d and 3 d after surgery]. Results: The incidence of moderate to severe pain in group D 1 h after surgery was 13.3% (8/60), lower than 30.0% (18/60) of group C (P<0.05). The incidence of rescue analgesia in group D at 1 h and 1 d after surgery were 13.3% (8/60) and 4.2% (5/120), respectively, lower than 30.0% (18/60) and 12.5% (15/120) of group C (both P<0.05). The IL-1β level in group D was (4.1±1.8)ng/L at 1 d after surgery, which was lower than (4.9±2.6) ng/L of group C (P=0.048). The IL-6 level in group D was (2.0±0.7)ng/L at 3 d after surgery, which was lower than (2.4±1.1) ng/L of group C (P=0.018). There was no significant difference in the doses of sufentanil in analgesic pumps, intraoperative SRS score, incidence of neuromuscular block residue, time spent in PACU, time of first exhaust and defecation after surgery, incidence of nausea and vomiting, and length of hospitalization between the two groups (all P>0.05). Conclusion: DNMB combined with low pneumoperitoneum pressure anesthesia strategy alleviates the early-stage pain in patients after laparoscopic colorectal surgery.
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Affiliation(s)
- H X Li
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X Xu
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - P X Tan
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - T H Wang
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - B L Li
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H Zheng
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - T Yan
- Department of Anesthesiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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10
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Nekanti U, Sakthivel PS, Zahedi A, Creasman DA, Nishi RA, Dumont CM, Piltti KM, Guardamondo GL, Hernandez N, Chen X, Song H, Lin X, Martinez J, On L, Lakatos A, Pawar K, David BT, Guo Z, Seidlits SK, Xu X, Shea LD, Cummings BJ, Anderson AJ. Multichannel bridges and NSC synergize to enhance axon regeneration, myelination, synaptic reconnection, and recovery after SCI. NPJ Regen Med 2024; 9:12. [PMID: 38499577 PMCID: PMC10948859 DOI: 10.1038/s41536-024-00356-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 02/15/2024] [Indexed: 03/20/2024] Open
Abstract
Regeneration in the injured spinal cord is limited by physical and chemical barriers. Acute implantation of a multichannel poly(lactide-co-glycolide) (PLG) bridge mechanically stabilizes the injury, modulates inflammation, and provides a permissive environment for rapid cellularization and robust axonal regrowth through this otherwise inhibitory milieu. However, without additional intervention, regenerated axons remain largely unmyelinated (<10%), limiting functional repair. While transplanted human neural stem cells (hNSC) myelinate axons after spinal cord injury (SCI), hNSC fate is highly influenced by the SCI inflammatory microenvironment, also limiting functional repair. Accordingly, we investigated the combination of PLG scaffold bridges with hNSC to improve histological and functional outcome after SCI. In vitro, hNSC culture on a PLG scaffold increased oligodendroglial lineage selection after inflammatory challenge. In vivo, acute PLG bridge implantation followed by chronic hNSC transplantation demonstrated a robust capacity of donor human cells to migrate into PLG bridge channels along regenerating axons and integrate into the host spinal cord as myelinating oligodendrocytes and synaptically integrated neurons. Axons that regenerated through the PLG bridge formed synaptic circuits that connected the ipsilateral forelimb muscle to contralateral motor cortex. hNSC transplantation significantly enhanced the total number of regenerating and myelinated axons identified within the PLG bridge. Finally, the combination of acute bridge implantation and hNSC transplantation exhibited robust improvement in locomotor recovery. These data identify a successful strategy to enhance neurorepair through a temporally layered approach using acute bridge implantation and chronic cell transplantation to spare tissue, promote regeneration, and maximize the function of new axonal connections.
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Affiliation(s)
- Usha Nekanti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
| | - Pooja S Sakthivel
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Atena Zahedi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Dana A Creasman
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Rebecca A Nishi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Katja M Piltti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Glenn L Guardamondo
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Norbert Hernandez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xingyuan Chen
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Hui Song
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xiaoxiao Lin
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Joshua Martinez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Lillian On
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Anita Lakatos
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Kiran Pawar
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Brian T David
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | - Zhiling Guo
- Department of Medicine & Susan Samueli Integrative Health Institute, University of California, Irvine, CA, USA
| | - Stephanie K Seidlits
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Center for Neural Circuit Mapping, University of California Irvine, Irvine, CA, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brian J Cummings
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA
| | - Aileen J Anderson
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA.
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA.
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, Irvine, CA, USA.
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11
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Jiang Y, Ye Y, Zhang X, Yu Y, Huang L, Bao X, Xu X. Identification and characterization of CHD4-associated eRNA as a novel modulator of fetal hemoglobin levels in β-thalassemia. Biochem Biophys Res Commun 2024; 701:149555. [PMID: 38325179 DOI: 10.1016/j.bbrc.2024.149555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/18/2024] [Accepted: 01/18/2024] [Indexed: 02/09/2024]
Abstract
Fetal-to-adult hemoglobin switching is controlled by programmed silencing of γ-globin while the re-activation of fetal hemoglobin (HbF) is an effective strategy for ameliorating the clinical severity of β-thalassemia and sickle cell disease. The identification of enhancer RNAs (eRNAs) related to the fetal (α2γ2) to adult hemoglobin (α2β2) switching remains incomplete. In this study, the transcriptomes of GYPA+ cells from six β-thalassemia patients with extreme HbF levels were sequenced to identify differences in patterns of noncoding RNA expression. It is interesting that an enhancer upstream of CHD4, an HbF-related core subunit of the NuRD complex, was differentially transcribed. We found a significantly positive correlation of eRNA-CHD4 enhancer-gene interaction using the public database of FANTOM5. Specifically, the eRNA-CHD4 expression was found to be significantly higher in both CD34+ HSPCs and HUDEP-2 than those in K562 cells which commonly expressed high level of HbF, suggesting a correlation between eRNA and HbF expression. Furthermore, prediction of transcription binding sites of cis-eQTLs and the CHD4 genomic region revealed a putative interaction site between rs73264846 and ZNF410, a known transcription factor regulating HbF expression. Moreover, in-vitro validation showed that the inhibition of eRNA could reduce the expression of HBG expression in HUDEP-2 cells. Taken together, the findings of this study demonstrate that a distal enhancer contributes to stage-specific silencing of γ-globin genes through direct modulation of CHD4 expression and provide insights into the epigenetic mechanisms of NuRD-mediated hemoglobin switching.
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Affiliation(s)
- Yida Jiang
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China; Guangdong Key Chip Laboratory, Guangzhou, Guangdong, China
| | - Yuhua Ye
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China; Guangdong Key Chip Laboratory, Guangzhou, Guangdong, China
| | - Xinhua Zhang
- Department of Hematology, 923rd Hospital of the People's Liberation Army, Nanning, Guangxi, China
| | - Yanping Yu
- Department of Pediatric, 923rd Hospital of the People's Liberation Army, Nanning, Guangxi, China
| | - Liping Huang
- Department of Pediatric, 923rd Hospital of the People's Liberation Army, Nanning, Guangxi, China
| | - Xiuqin Bao
- Medical Genetic Center, Guangdong Women and Children Hospital, Guangzhou, Guangdong, China
| | - Xiangmin Xu
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China; Guangdong Key Chip Laboratory, Guangzhou, Guangdong, China.
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12
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Yang S, Yin Y, Sun Y, Ai D, Xia X, Xu X, Song J. AZGP1 Aggravates Macrophage M1 Polarization and Pyroptosis in Periodontitis. J Dent Res 2024:220345241235616. [PMID: 38491721 DOI: 10.1177/00220345241235616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2024] Open
Abstract
Periodontal tissue destruction in periodontitis is a consequence of the host inflammatory response to periodontal pathogens, which could be aggravated in the presence of type 2 diabetes mellitus (T2DM). Accumulating evidence highlights the intricate involvement of macrophage-mediated inflammation in the pathogenesis of periodontitis under both normal and T2DM conditions. However, the underlying mechanism remains elusive. Alpha-2-glycoprotein 1 (AZGP1), a glycoprotein featuring an MHC-I domain, has been implicated in both inflammation and metabolic disorders. In this study, we found that AZGP1 was primarily colocalized with macrophages in periodontitis tissues. AZGP1 was increased in periodontitis compared with controls, which was further elevated when accompanied by T2DM. Adeno-associated virus-mediated overexpression of Azgp1 in the periodontium significantly enhanced periodontal inflammation and alveolar bone loss, accompanied by elevated M1 macrophages and pyroptosis in murine models of periodontitis and T2DM-associated periodontitis, while Azgp1-/- mice exhibited opposite effects. In primary bone marrow-derived macrophages stimulated by lipopolysaccharide (LPS) or LPS and palmitic acid (PA), overexpression or knockout of Azgp1 markedly upregulated or suppressed, respectively, the expression of macrophage M1 markers and key components of the NLR Family Pyrin Domain Containing 3 (NLRP3)/caspase-1 signaling. Moreover, conditioned medium from Azgp1-overexpressed macrophages under LPS or LPS+PA stimulation induced higher inflammatory activation and lower osteogenic differentiation in human periodontal ligament stem cells (hPDLSCs). Furthermore, elevated M1 polarization and pyroptosis in macrophages and associated detrimental effects on hPDLSCs induced by Azgp1 overexpression could be rescued by NLRP3 or caspase-1 inhibition. Collectively, our study elucidated that AZGP1 could aggravate periodontitis by promoting macrophage M1 polarization and pyroptosis through the NLRP3/casapse-1 pathway, which was accentuated in T2DM-associated periodontitis. This finding deepens the understanding of AZGP1 in the pathogenesis of periodontitis and suggests AZGP1 as a crucial link mediating the adverse effects of diabetes on periodontal inflammation.
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Affiliation(s)
- S Yang
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Y Yin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Y Sun
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - D Ai
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - X Xia
- Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - X Xu
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - J Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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13
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Zhang Q, Lin P, Mao A, Liu Y, Shang X, Wei X, Li Y, Lin B, Xu X. An unusual case of thalassemia intermedia with inheritable complex repeats detected by single-molecule optical mapping. Haematologica 2024; 109:1000-1006. [PMID: 37767576 PMCID: PMC10905065 DOI: 10.3324/haematol.2023.282902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023] Open
Affiliation(s)
- Qianqian Zhang
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China; Dongguan Maternal and Child Health Care Hospital, Postdoctoral Innovation Practice Base of Southern Medical University; Prenatal Diagnosis Center, Dongguan Maternal and Child Health Care Hospital, Dongguan 523001, Guangdong
| | - Peng Lin
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China; Dongguan Maternal and Child Health Care Hospital, Postdoctoral Innovation Practice Base of Southern Medical University; Prenatal Diagnosis Center, Dongguan Maternal and Child Health Care Hospital, Dongguan 523001, Guangdong
| | - Aiping Mao
- Department of TGS Research and Development, Berry Genomics Corporation, Beijing 102200
| | - Yongqiong Liu
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong
| | - Xuan Shang
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong
| | - Xiaofeng Wei
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong
| | - Yuezhen Li
- Department of TGS Research and Development, Berry Genomics Corporation, Beijing 102200
| | - Bin Lin
- Guangzhou Jiexu Gene Technology Co., Ltd., Guangzhou 510530, Guangdong
| | - Xiangmin Xu
- Department of Medical Genetics, School of Basic Medical Sciences; Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong.
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14
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Zou LW, Liu YF, Liu H, Chen B, Jiang JH, Shi Y, Guo DQ, Xu X, Dong ZH, Fu WG. [Surgical strategies and efficacy analysis for aortic dissection complicating intractable mesenteric artery ischemia]. Zhonghua Wai Ke Za Zhi 2024; 62:235-241. [PMID: 38291640 DOI: 10.3760/cma.j.cn112139-20230926-00141] [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: 02/01/2024]
Abstract
Objective: To explore the surgical strategies and clinical efficacy for aortic dissection combined with refractory superior mesenteric artery (SMA) ischemia. Methods: This is a retrospective case series study. Clinical data of 24 patients with aortic dissection and refractory SMA ischemia admitted to the Department of Vascular Surgery, Zhongshan Hospital, Fudan University from August 2010 to August 2020 were retrospectively collected. Of the 24 patients, 21 were males and 3 were females, with an age of (50.3±9.9) years (range: 44 to 72 years).Among them, 9 cases were Stanford type A aortic dissection, and 15 cases were type B. All patients underwent CT angiography upon admission, and based on imaging characteristics, they were classified into three types. Type Ⅰ: severe stenosis/occlusion of the SMA true lumen only; Type Ⅱ: stenosis of the true lumens in the descending aorta and SMA (isolated type); Type Ⅲ: stenosis of the true lumens in the thoracoabdominal aorta and SMA (continuation type). Surgical procedures, complications, mortality, and reintervention rates were recorded. Results: Among the 24 patients, 17 (70.8%) were classified as Type Ⅰ, 4 (16.7%) as Type Ⅱ, and 3 (12.5%) as Type Ⅲ. Fourteen cases of Type Ⅰ underwent thoracic endovascular aortic repair combined with SMA stent implantation. Additionally, 3 Type Ⅰ and 1 Type Ⅱ patients underwent only SMA reconstruction (with one case of chronic TAAD treated with iliac artery-SMA bypass surgery). Moreover, 3 Type Ⅱ and 3 Type Ⅲ patients underwent descending aorta combined with SMA stent implantation. There were 5 patients (20.8%) who underwent small bowel resection, either in the same sitting or in a staged procedure. During hospitalization, 4 patients died, resulting in a mortality rate of 16.7%. Among these cases, two patients succumbed to severe intestinal ischemia resulting in multiple organ dysfunction syndrome. The follow-up duration was (46±9) months (range: 13 to 72 months). During the follow-up, 2 patients died, unrelated to intestinal ischemia. The 5-year freedom from reintervention survival rate was 86.1%, and the 5-year cumulative survival rate was 82.6%. Conclusions: Patients with aortic dissection and refractory SMA ischemia have a high perioperative mortality. However, implementing appropriate surgical strategies according to different clinical scenarios can reduce mortality and alleviate intestinal ischemia.
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Affiliation(s)
- L W Zou
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - Y F Liu
- Division of Vascular and Interventional Radiology, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510510, China
| | - H Liu
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - B Chen
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - J H Jiang
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - Y Shi
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - D Q Guo
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - X Xu
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - Z H Dong
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
| | - W G Fu
- Departments of Vascular Surgery, Zhongshan Hospital, Institute of Vascular Surgery, Fudan University, National Clinical Research Center for Interventional Medicine, Shanghai 200030, China
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15
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Sun Y, Nitz DA, Xu X, Giocomo LM. Subicular neurons encode concave and convex geometries. Nature 2024; 627:821-829. [PMID: 38448584 PMCID: PMC10972755 DOI: 10.1038/s41586-024-07139-z] [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: 06/15/2023] [Accepted: 01/31/2024] [Indexed: 03/08/2024]
Abstract
Animals in the natural world constantly encounter geometrically complex landscapes. Successful navigation requires that they understand geometric features of these landscapes, including boundaries, landmarks, corners and curved areas, all of which collectively define the geometry of the environment1-12. Crucial to the reconstruction of the geometric layout of natural environments are concave and convex features, such as corners and protrusions. However, the neural substrates that could underlie the perception of concavity and convexity in the environment remain elusive. Here we show that the dorsal subiculum contains neurons that encode corners across environmental geometries in an allocentric reference frame. Using longitudinal calcium imaging in freely behaving mice, we find that corner cells tune their activity to reflect the geometric properties of corners, including corner angles, wall height and the degree of wall intersection. A separate population of subicular neurons encode convex corners of both larger environments and discrete objects. Both corner cells are non-overlapping with the population of subicular neurons that encode environmental boundaries. Furthermore, corner cells that encode concave or convex corners generalize their activity such that they respond, respectively, to concave or convex curvatures within an environment. Together, our findings suggest that the subiculum contains the geometric information needed to reconstruct the shape and layout of naturalistic spatial environments.
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Affiliation(s)
- Yanjun Sun
- Department of Neurobiology, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, USA.
| | - Douglas A Nitz
- Department of Cognitive Science, University of California, San Diego, La Jolla, CA, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, USA
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, Irvine, CA, USA
| | - Lisa M Giocomo
- Department of Neurobiology, Stanford University School of Medicine, Stanford, CA, USA.
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16
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Garduño BM, Hanni P, Hays C, Cogram P, Insel N, Xu X. How the forebrain transitions to adulthood: developmental plasticity markers in a long-lived rodent reveal region diversity and the uniqueness of adolescence. Front Neurosci 2024; 18:1365737. [PMID: 38456144 PMCID: PMC10917993 DOI: 10.3389/fnins.2024.1365737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/02/2024] [Indexed: 03/09/2024] Open
Abstract
Maturation of the forebrain involves transitions from higher to lower levels of synaptic plasticity. The timecourse of these changes likely differs between regions, with the stabilization of some networks scaffolding the development of others. To gain better insight into neuroplasticity changes associated with maturation to adulthood, we examined the distribution of two molecular markers for developmental plasticity. We conducted the examination on male and female degus (Octodon degus), a rodent species with a relatively long developmental timecourse that offers a promising model for studying both development and age-related neuropathology. Immunofluorescent staining was used to measure perineuronal nets (PNNs), an extracellular matrix structure that emerges during the closure of critical plasticity periods, as well as microglia, resident immune cells that play a crucial role in synapse remodeling during development. PNNs (putatively restricting plasticity) were found to be higher in non-juvenile (>3 month) degus, while levels of microglia (putatively mediating plasticity) decreased across ages more gradually, and with varying timecourses between regions. Degus also showed notable variation in PNN levels between cortical layers and hippocampal subdivisions that have not been previously reported in other species. These results offer a glimpse into neuroplasticity changes occurring during degu maturation and highlight adolescence as a unique phase of neuroplasticity, in which PNNs have been established but microglia remain relatively high.
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Affiliation(s)
- B. Maximiliano Garduño
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, United States
| | - Patrick Hanni
- Department of Psychology, University of Montana, Missoula, MT, United States
| | - Chelsea Hays
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, United States
| | - Patricia Cogram
- Department of Ecological Sciences, Faculty of Sciences, Institute of Ecology and Biodiversity, Universidad de Chile, Santiago, Chile
- The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA, United States
| | - Nathan Insel
- Department of Psychology, University of Montana, Missoula, MT, United States
- Department of Psychology, Wilfrid Laurier University, Waterloo, ON, Canada
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, United States
- The Center for Neural Circuit Mapping, University of California, Irvine, Irvine, CA, United States
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA, United States
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17
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Bouin A, Wu G, Koyuncu OO, Ye Q, Kim KY, Wu MY, Tong L, Chen L, Phan S, Mackey MR, Ramachandra R, Ellisman MH, Holmes TC, Semler BL, Xu X. New rabies viral resources for multi-scale neural circuit mapping. Mol Psychiatry 2024:10.1038/s41380-024-02451-6. [PMID: 38355784 DOI: 10.1038/s41380-024-02451-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024]
Abstract
Comparisons and linkage between multiple imaging scales are essential for neural circuit connectomics. Here, we report 20 new recombinant rabies virus (RV) vectors that we have developed for multi-scale and multi-modal neural circuit mapping tools. Our new RV tools for mesoscale imaging express a range of improved fluorescent proteins. Further refinements target specific neuronal subcellular locations of interest. We demonstrate the discovery power of these new tools including the detection of detailed microstructural changes of rabies-labeled neurons in aging and Alzheimer's disease mouse models, live imaging of neuronal activities using calcium indicators, and automated measurement of infected neurons. RVs that encode GFP and ferritin as electron microscopy (EM) and fluorescence microscopy reporters are used for dual EM and mesoscale imaging. These new viral variants significantly expand the scale and power of rabies virus-mediated neural labeling and circuit mapping across multiple imaging scales in health and disease.
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Affiliation(s)
- Alexis Bouin
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Ginny Wu
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Orkide O Koyuncu
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Qiao Ye
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Department Biomedical Engineering, University of California, Irvine, CA, 92697, USA
| | - Keun-Young Kim
- The National Center for Microscopy and Imaging Research (NCMIR) and the Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Michele Y Wu
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Liqi Tong
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Lujia Chen
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Department Biomedical Engineering, University of California, Irvine, CA, 92697, USA
| | - Sebastien Phan
- The National Center for Microscopy and Imaging Research (NCMIR) and the Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Mason R Mackey
- The National Center for Microscopy and Imaging Research (NCMIR) and the Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Ranjan Ramachandra
- The National Center for Microscopy and Imaging Research (NCMIR) and the Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Mark H Ellisman
- The National Center for Microscopy and Imaging Research (NCMIR) and the Department of Neurosciences, School of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Todd C Holmes
- Physiology & Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
- The Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
| | - Bert L Semler
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, CA, 92697, USA.
- The Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA.
| | - Xiangmin Xu
- Department of Microbiology and Molecular Genetics, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Department Biomedical Engineering, University of California, Irvine, CA, 92697, USA.
- The Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA.
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18
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Liu Y, Zhuang Y, Chen J, Zhong Z, Fang J, Li X, Xiao B, Li P, Lin B, Tao Z, Liang Y, Lin P, Wang X, Song M, Luo H, Qin L, Huang L, Tan J, Li H, Zhong T, Yu L, Liu Z, Tang D, Zhao Y, Zhang X, Ye Y, Xu X. Quantitative evaluation of the clinical severity of hemoglobin H disease in a cohort of 591 patients using a scoring system based on regression analysis. Haematologica 2024; 109:632-638. [PMID: 37646667 PMCID: PMC10828758 DOI: 10.3324/haematol.2023.283211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023] Open
Affiliation(s)
- Yumeng Liu
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yuan Zhuang
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianhong Chen
- Department of Medical Genetics and Prenatal Diagnosis, Huizhou First Maternal and Child Health Care Hospital, Huizhou, Guangdong, China
| | - Zeyan Zhong
- Department of Medical Genetics and Prenatal Diagnosis, Huizhou First Maternal and Child Health Care Hospital, Huizhou, Guangdong, China
| | - Jianpei Fang
- Department of Pediatric Hematology/ Oncology, Children’s Medical Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xinyu Li
- Department of Pediatric Hematology/ Oncology, Children’s Medical Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Bin Xiao
- Department of Hematology, 923rd Hospital of the People’s Liberation Army, Nanning, Guangxi, China
| | - Pingping Li
- Department of Hematology, 923rd Hospital of the People’s Liberation Army, Nanning, Guangxi, China
| | - Bin Lin
- Guangzhou Huayin Healthcare Group Co. Ltd., Guangzhou, Guangdong, China
- Guangzhou Jiexu Gene Technology Co. Ltd., Guangzhou, Guangdong, China
| | - Zhenzhong Tao
- Guangzhou Huayin Healthcare Group Co. Ltd., Guangzhou, Guangdong, China
- Guangzhou Jiexu Gene Technology Co. Ltd., Guangzhou, Guangdong, China
| | - Yidan Liang
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Peng Lin
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Xingmin Wang
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Mengyang Song
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Hualei Luo
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Lang Qin
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Li Huang
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Jufang Tan
- Prenatal Diagnosis Center, Chenzhou First People’s Hospital, Chenzhou, Hunan, China
| | - Hailiang Li
- Department of Laboratory Hematology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Tianyu Zhong
- Department of Laboratory Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Lian Yu
- Department of Hematology and Rheumatology, Longyan First Hospital, Affiliated to Fujian Medical University, Longyan, Fujian, China
| | - Zhixiang Liu
- Department of Medical Dispute, Maternal and Child Health Hospital, Heyuan China Heyuan, Guangdong, China
| | - Deguo Tang
- Maternal and Child Health Hospital of Yongzhou City, Yongzhou, Hunan, China
| | - Yongzhong Zhao
- Biologics, Gene and Cell Therapy, Frontage Laboratories, Exton, PA, USA
| | - Xinhua Zhang
- Department of Hematology, 923rd Hospital of the People’s Liberation Army, Nanning, Guangxi, China
| | - Yuhua Ye
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiangmin Xu
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
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19
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Bao X, Gao Y, Wang Z, Ye Y, Chen D, Zuo Y, Zhao C, Xu X. Activation of γ-globin expression by LncRNA-mediated ERF promoter hypermethylation in β-thalassemia. Clin Epigenetics 2024; 16:12. [PMID: 38218889 PMCID: PMC10787479 DOI: 10.1186/s13148-023-01614-6] [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: 10/09/2023] [Accepted: 12/10/2023] [Indexed: 01/15/2024] Open
Abstract
The mechanism that drives the switch from fetal to adult hemoglobin (Hb) provides a therapeutic target for β-thalassemia. We have previously identified that hypermethylation of transcription factor ERF promoter reactivated γ-globin expression. To uncover the mechanism underlying the hypermethylation of ERF promoter, we performed RNA sequencing in β0/β0-thalassemia patients and identified an upregulated long noncoding RNA (RP11-196G18.23) associated with HbF production. RP11-196G18.23 bound to the ERF promoter and recruited DNA methyltransferase 3A to promote DNA hypermethylation-mediated ERF downregulation, thereby ameliorating ERF-induced γ-globin inactivation. The identification of RP11-196G18.23 provides an epigenetic mechanism for the reactivation of fetal γ-globin expression for β-hemoglobinopathies.
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Affiliation(s)
- Xiuqin Bao
- Medical Genetic Center, Guangdong Women and Children Hospital, Guangzhou, 514000, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
- Maternal and Children Metabolic-Genetic Key Laboratory, Guangdong Women and Children Hospital, Guangzhou, 514000, Guangdong, China
| | - Yuanyi Gao
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
| | - Zhongju Wang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
| | - Yuhua Ye
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
| | - Diyu Chen
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
| | - Yangjin Zuo
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China
| | - Cunyou Zhao
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China.
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, and Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, China.
| | - Xiangmin Xu
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China.
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, Guangdong, China.
- Guangdong Engineering and Technology Research Center for Molecular Diagnostics of Human Genetic Diseases, Guangzhou, 510515, Guangdong, China.
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20
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Hou WW, Lu HY, Jin F, Xu X, Zheng XH, Chen XL, Cai WL. [Application of completely digital workflow in the restoration of patients with deep overbite with esthetic defects]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:89-93. [PMID: 38172067 DOI: 10.3760/cma.j.cn112144-20230823-00106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Affiliation(s)
- W W Hou
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - H Y Lu
- Department of Prosthodontics, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - F Jin
- Department of Dental Laboratory, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - X Xu
- Department of Dental Digital Center, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - X H Zheng
- Department of Dental Laboratory, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - X L Chen
- Department of Dental Digital Center, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
| | - W L Cai
- Department of Dental Digital Center, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
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21
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Zhou Y, Fu G, Xia Q, Li XX, Xu X. [Placental transmogrification of lung: clinicopathological features of three cases]. Zhonghua Bing Li Xue Za Zhi 2024; 53:77-79. [PMID: 38178752 DOI: 10.3760/cma.j.cn112151-20230927-00223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Affiliation(s)
- Y Zhou
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - G Fu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Q Xia
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X X Li
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Xu
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Qiao X, Grieco SF, Yu Z, Holmes TC, Xu X. Intranasal Delivery of Ketamine Induces Cortical Disinhibition. eNeuro 2024; 11:ENEURO.0107-23.2023. [PMID: 38164560 PMCID: PMC10849039 DOI: 10.1523/eneuro.0107-23.2023] [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: 03/27/2023] [Revised: 11/02/2023] [Accepted: 11/21/2023] [Indexed: 01/03/2024] Open
Abstract
Our previous studies find that subcutaneously administered (s.c.) subanesthetic ketamine promotes sustained cortical disinhibition and plasticity in adult mouse binocular visual cortex (bV1). We hypothesized that intranasal delivery (i.n.) of subanesthetic ketamine may have similar actions. To test this, we delivered ketamine (10 mg/kg, i.n.) to adult mice and then recorded excitatory pyramidal neurons or PV+ interneurons in L2/3 of bV1 slices. In pyramidal neurons the baseline IPSC amplitudes from mice treated with ketamine are significantly weaker than those in control mice. Acute bath application of neuregulin-1 (NRG1) to cortical slices increases these IPSC amplitudes in mice treated with ketamine but not in controls. In PV+ interneurons, the baseline EPSC amplitudes from mice treated with ketamine are significantly weaker than those in control mice. Acute bath application of NRG1 to cortical slices increases these EPSC amplitudes in mice treated with ketamine but not in controls. We also found that mice treated with ketamine exhibit increased pCREB staining in L2/3 of bV1. Together, our results show that a single intranasal delivery of ketamine reduces PV+ interneuron excitation and reduces pyramidal neuron inhibition and that these effects are acutely reversed by NRG1. These results are significant as they show that intranasal delivery of ketamine induces cortical disinhibition, which has implications for the treatment of psychiatric, neurologic, and ophthalmic disorders.
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Affiliation(s)
- Xin Qiao
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine 92697, California
| | - Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine 92697, California
- Center for Neural Circuit Mapping, University of California, Irvine 92697, California
| | - Zhaoxia Yu
- Center for Neural Circuit Mapping, University of California, Irvine 92697, California
- Department of Statistics, Donald Bren School of Information and Computer Sciences, Irvine 92697, California
| | - Todd C Holmes
- Center for Neural Circuit Mapping, University of California, Irvine 92697, California
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine 92697, California
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine 92697, California
- Center for Neural Circuit Mapping, University of California, Irvine 92697, California
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Cogram P, Garduño BM, Ren B, Xu X. First International Conference on Unconventional Animal Models of Alzheimer's Disease and Aging. J Alzheimers Dis 2024; 98:333-336. [PMID: 38393919 DOI: 10.3233/jad-249004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
The first International Conference on Unconventional Animal Models of Alzheimer's Disease and Aging (UAMAA) took place on December 13-16, 2023, in Santiago, Chile. The Alzheimer's disease (AD) research field is currently in search for new and unconventional models that could hold greater translational potential than transgenic mouse models. Thus this UAMAA conference is timely and significant. The event consisted of 6 sessions with talks from 28 world-class scientists from all over the world. These animal models of interest include the degu (Octodon degu), the dog (Canis familiaris), and certain species of nonhuman primates that may better recapitulate neuropathology and cognitive impairments in human AD. Our conference has provided a formal forum to discuss and highlight new research directions, alternative animal models, and innovative approaches for the AD and aging research field.
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Affiliation(s)
- Patricia Cogram
- Institute of Ecology and Biodiversity (IEB), Faculty of Science, University of Chile, Santiago, Chile
- The Center for Neural Circuit Mapping, University of California, Irvine, CA, USA
| | - B Maximiliano Garduño
- Department Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, USA
| | - Bing Ren
- Department of Cellular and Molecular Medicine, School of Medicine, University of California San Diego, La Jolla, CA, USA
- Center for Epigenomics, School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Xiangmin Xu
- The Center for Neural Circuit Mapping, University of California, Irvine, CA, USA
- Department Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, USA
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
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Wu S, Shu L, Song Z, Xu X. SFDA: Domain Adaptation With Source Subject Fusion Based on Multi-Source and Single-Target Fall Risk Assessment. IEEE Trans Neural Syst Rehabil Eng 2023; 31:4907-4920. [PMID: 38032785 DOI: 10.1109/tnsre.2023.3337861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
In cross-subject fall risk classification based on plantar pressure, a challenge is that data from different subjects have significant individual information. Thus, the models with insufficient generalization ability can't perform well on new subjects, which limits their application in daily life. To solve this problem, domain adaptation methods are applied to reduce the gap between source and target domain. However, these methods focus on the distribution of the source and the target domain, but ignore the potential correlation among multiple source subjects, which deteriorates domain adaptation performance. In this paper, we proposed a novel method named domain adaptation with subject fusion (SFDA) for fall risk assessment, greatly improving the cross-subject assessment ability. Specifically, SFDA synchronously carries out source target adaptation and multiple source subject fusion by domain adversarial module to reduce source-target gap and distribution distance within source subjects of same class. Consequently, target samples can learn more task-specific features from source subjects to improve the generalization ability. Experiment results show that SFDA achieved mean accuracy of 79.17 % and 73.66 % based on two backbones in a cross-subject classification manner, outperforming the state-of-the-art methods on continuous plantar pressure dataset. This study proves the effectiveness of SFDA and provides a novel tool for implementing cross-subject and few-gait fall risk assessment.
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Johnston K, Berackey BB, Tran KM, Gelber A, Yu Z, MacGregor G, Mukamel EA, Tan Z, Green K, Xu X. Single cell spatial transcriptomics reveals distinct patterns of dysregulation in non-neuronal and neuronal cells induced by the Trem2R47H Alzheimer's risk gene mutation. Res Sq 2023:rs.3.rs-3656139. [PMID: 38106071 PMCID: PMC10723554 DOI: 10.21203/rs.3.rs-3656139/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: 12/19/2023]
Abstract
INTRODUCTION The R47H missense mutation of the TREM2 gene is a strong risk factor for development of Alzheimer's Disease. We investigate cell-type-specific spatial transcriptomic changes induced by the Trem2R47H mutation to determine the impacts of this mutation on transcriptional dysregulation. METHODS We profiled 15 mouse brain sections consisting of wild-type, Trem2R47H, 5xFAD and Trem2R47H; 5xFAD genotypes using MERFISH spatial transcriptomics. Single-cell spatial transcriptomics and neuropathology data were analyzed using our custom pipeline to identify plaque and Trem2R47H induced transcriptomic dysregulation. RESULTS The Trem2R47H mutation induced consistent upregulation of Bdnf and Ntrk2 across many cortical excitatory neuron types, independent of amyloid pathology. Spatial investigation of genotype enriched subclusters identified spatially localized neuronal subpopulations reduced in 5xFAD and Trem2R47H; 5xFAD mice. CONCLUSION Spatial transcriptomics analysis identifies glial and neuronal transcriptomic alterations induced independently by 5xFAD and Trem2R47H mutations, impacting inflammatory responses in microglia and astrocytes, and activity and BDNF signaling in neurons.
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Xu X, Chen X, Wu F, Wu C, Liu T, Dai B, Wang T, Zhang S. [Comparison of the efficiency of different etiological assays for detection of Schistosoma japonicum infections in wild mice]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:573-582. [PMID: 38413018 DOI: 10.16250/j.32.1374.2023076] [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] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
OBJECTIVE To compare the efficiency of multiple etiological techniques for detection of Schistosoma japonicum infections in wild mice, so as to provide technical supports to assessment of schistosomiasis transmission risk. METHODS Wild mice were captured with baited traps at night in Oncomelania hupensis snail-infested settings in schistosomiasis-endemic foci of Anhui Province from October to November, 2022. S. japonicum infections were detected in wild mice using microscopy of mouse liver tissues, microscopy of mouse mesenteric tissues, microscopy of mouse liver tissue homogenates, miracidial hatching test of mouse liver tissue homogenates, Kato-Katz technique and miracidial hatching test of mouse stool samples alone and in combinations. Identification of S. japonicum eggs or miracidia by any of these six assays was defined as an infection. The sensitivity of six assays alone or in combinations was compared for detection of S. japonicum infections in wild mice. RESULTS A total of 1 703 wild mice were captured, with 366 wild mice detected positive for S. japonicum (21.49%). There were significant differences in the prevalence of S. japonicum infections in wild mice by six assays (Q = 529.33, P < 0.001) and in the sensitivity of six assays for detection of S. japonicum infections in wild mice (χ2 = 527.78, P < 0.001). In addition, the combination of microscopy of mouse liver tissues and mesenteric tissues, combination of microscopy of mouse liver tissues and liver tissue homogenates and combination of microscopy of mouse liver tissues, microscopy of mesenteric tissues, microscopy of liver tissue homogenates and Kato-Katz technique showed 86.61%, 87.16% and 97.27% sensitivities for detection of S. japonicum infections in wild mice, respectively. CONCLUSIONS Diverse etiological assays show various efficiencies for detection of S. japonicum infections in wild mice. Combination of microscopy of mouse liver tissues and microscopy of mesenteric tissues, and combination of microscopy of mouse liver tissues and microscopy of liver tissue homogenates are potential approaches for field detection of S. japonicum infections in wild mice.
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Affiliation(s)
- X Xu
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230601, China
| | - X Chen
- Shitai County Center for Disease Control and Prevention, Anhui Province, China
| | - F Wu
- Wuhu Municipal Station for Endemic Disease Control, Anhui Province, China
| | - C Wu
- Guichi District Station of Schistosomiasis Control, Chizhou City, Anhui Province, China
| | - T Liu
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230601, China
| | - B Dai
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230601, China
| | - T Wang
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230601, China
| | - S Zhang
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230601, China
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Zhang QJ, Chen SW, Xu X, Zhang HL, Yan JY. The effect of cold exposure on the levels of glucocorticoids, 11-hydroxysteroid dehydrogenase 2, and placental vascularization in a rat model. Eur Rev Med Pharmacol Sci 2023; 27:11961-11974. [PMID: 38164859 DOI: 10.26355/eurrev_202312_34795] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
OBJECTIVE Cold exposure (CE) before birth is one of the initial stressors that may impact mammalian pregnancy, changing placental and fetal development and affecting the health of the offspring. While glucocorticoids (GCs) participate in the body's response to the stress of CE, the specific mechanisms of their action are unclear. This study aims to determine the effect of CE stress on the placenta and to test whether stress, caused by cold exposure in pregnancy impairs fetal development by changing placental angiogenesis via excessive GC expression. MATERIALS AND METHODS CE rat model was created by exposing 30 SD rats to cold preconception, or during the first, second, and third weeks of pregnancy. Serum cortisol and soluble fms-like tyrosine kinase-1 (sFlt-1) expression levels, physiological index changes (food intake, body weight change and blood pressure), and pregnancy outcomes (fetal rat weight, number of live fetal rats, and placental weight) were collected at baseline and at different time points after the conception. Protein expression levels of 11 β-hydroxysteroid dehydrogenase 2 (11β-HSD2), glucocorticoid receptor, vascular endothelial growth factor A (VEGF-A), placental growth factor (PIGF), and sFlt-1 in placental tissues were measured by western blotting. Cytokeratin (CK) and laminin (LN) in trophoblasts, and α-actin in vascular smooth muscle of the spiral arteries of pregnant rats after the systemic cold treatment were assessed by immunofluorescence and visualized by fluorescent microscopy. To test the effect of 11β-HSD2 levels on the placental recasting, human first-trimester extravillous trophoblast cells (HTR8/SVneo) underwent knockdown using specific 11β-HSD2 siRNA constructs. Expression levels of 11β-HSD2 were analyzed by quantitative real-time PCR (qPCR) and into HTR8 cells, and the expression levels of the 11β-HSD2 gene in each group were measured using qPCR. Cell migration and invasion was assessed by Transwell migration assay, and sFlt-1 levels in HTR8 cells were measured by ELISA. RESULTS CE pre-conception led to consistently increasing serum corticosterone and sFlt-1 levels throughout pregnancy, and persistently increased diastolic blood pressure (DBP) in rat CE model compared to control animals. CE during the second week of gestation (Gp.3) was associated with significantly lower placental weight (p=0.0003). Cold exposure in the third week (Gp.4) was associated with significantly (p=0.001) lower fetal weight. CE pre-conception was associated with significantly decreased placental levels of 11β-HSD2, glucocorticoid receptor, VEGF-A, PIGF, and sFlt-1 proteins and α-actin compared to the control group. Silencing 11β-HSD2 by siRNA led to reduced cell migrations and invasion, and markedly increased expression levels of sFlt-1 in HTR8/SVneo cells (p<0.05). CONCLUSIONS Pre-conception cold exposure and during early pregnancy leads to increased GCs levels and impaired placental 11β-HSD2 activity. We suggest that the subsequent 11β-HSD2-induced increase in the sFlt-1expression during early pregnancy may affect placental vascular remodeling and change placental morphological structure and function.
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Affiliation(s)
- Q-J Zhang
- Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, Fujian Province, China.
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Huang W, Liu X, Cheng P, Li Y, Zhou H, Liu Y, Dong Y, Wang P, Xu C, Xu X. Prognostic value of plaque volume combined with CT fractional flow reserve in patients with suspected coronary artery disease. Clin Radiol 2023; 78:e1048-e1056. [PMID: 37788967 DOI: 10.1016/j.crad.2023.08.024] [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] [Received: 01/17/2023] [Revised: 08/08/2023] [Accepted: 08/30/2023] [Indexed: 10/05/2023]
Abstract
AIM To investigate the prognostic value of quantitative plaque volume on coronary computed tomography (CT) angiography (CTA) combined with CT fractional flow reserve (CT-FFR) for major adverse cardiac events (MACE) in suspected coronary artery disease (CAD) patients. MATERIALS AND METHODS Patients who underwent coronary CTA with clinically suspected CAD were enrolled retrospectively in this study. Patients' baseline, Framingham Risk Score (FRS), coronary CTA plaque assessment, and CT-FFR were analysed retrospectively. Study outcomes included rehospitalisation and MACE (ST-segment elevation myocardial infarction, unstable angina, or non-ST-segment elevation myocardial infarction, revascularisation, and cardiac death). RESULTS There were 251 patients in the study, with a follow-up period of 1-6.58 years. Mean age was 61.16 ± 10.45 years and 146 (58%) patients were male. Higher CT-adapted Leaman score and quantitative plaque volume were found in patients with FRS >0.2 regardless of categorical or continuous variables. Coronary scores, quantitative plaque parameters, and CT-FFR were associated with MACE and rehospitalisation in univariate analysis. In model 1, CT-FFR was associated with MACE in multivariate Cox analysis when adjusted for FRS and CT-adapted Leaman score. Quantitative plaque parameters including calcified plaque volume, fibro-fatty plaque volume, low-attenuation plaque volume, non-calcified plaque volume, and total plaque volume were significantly associated with MACE and improved overall prognostic performance in a model adjusted for CT-FFR. CONCLUSION Additional quantitative plaque volume and CT-FFR further improve the predictive incremental value based on risk factor scores for prognostic prediction in patients. Adding quantitative plaque volume combined with CT-FFR analysis to anatomical and clinical assessment will be further beneficial to predict patients' prognosis of MACE.
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Affiliation(s)
- W Huang
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - X Liu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - P Cheng
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - Y Li
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Jianghan District, Wuhan 430022, China
| | - H Zhou
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - Y Liu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - Y Dong
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - P Wang
- Department of Clinical Laboratory, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China
| | - C Xu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, 1037 Luoyu Road, Hongshan District, Wuhan 430070, China
| | - X Xu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, 39 Yanhu Avenue, Wuchang District, Wuhan 430077, China.
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Grieco SF, Johnston KG, Gao P, Garduño BM, Tang B, Yi E, Sun Y, Horwitz GD, Yu Z, Holmes TC, Xu X. Anatomical and molecular characterization of parvalbumin-cholecystokinin co-expressing inhibitory interneurons: implications for neuropsychiatric conditions. Mol Psychiatry 2023; 28:5293-5308. [PMID: 37443194 DOI: 10.1038/s41380-023-02153-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/15/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023]
Abstract
Inhibitory interneurons are crucial to brain function and their dysfunction is implicated in neuropsychiatric conditions. Emerging evidence indicates that cholecystokinin (CCK)-expressing interneurons (CCK+) are highly heterogenous. We find that a large subset of parvalbumin-expressing (PV+) interneurons express CCK strongly; between 40 and 56% of PV+ interneurons in mouse hippocampal CA1 express CCK. Primate interneurons also exhibit substantial PV/CCK co-expression. Mouse PV+/CCK+ and PV+/CCK- cells show distinguishable electrophysiological and molecular characteristics. Analysis of single nuclei RNA-seq and ATAC-seq data shows that PV+/CCK+ cells are a subset of PV+ cells, not of synuclein gamma positive (SNCG+) cells, and that they strongly express oxidative phosphorylation (OXPHOS) genes. We find that mitochondrial complex I and IV-associated OXPHOS gene expression is strongly correlated with CCK expression in PV+ interneurons at both the transcriptomic and protein levels. Both PV+ interneurons and dysregulation of OXPHOS processes are implicated in neuropsychiatric conditions, including autism spectrum (ASD) disorder and schizophrenia (SCZ). Analysis of human brain samples from patients with these conditions shows alterations in OXPHOS gene expression. Together these data reveal important molecular characteristics of PV-CCK co-expressing interneurons and support their implication in neuropsychiatric conditions.
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Affiliation(s)
- Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
| | - Kevin G Johnston
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Department of Mathematics, School of Physical Sciences, University of California, Irvine, CA, 92697, USA
| | - Pan Gao
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - B Maximiliano Garduño
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Bryan Tang
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Elsie Yi
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Yanjun Sun
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Gregory D Horwitz
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA, 98195, USA
| | - Zhaoxia Yu
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
- Department of Statistics, Donald Bren School of Information and Computer Sciences, University of California, Irvine, CA, 92697, USA
| | - Todd C Holmes
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA.
- Department of Microbiology and Molecular Genetics, University of California, Irvine, CA, 92697, USA.
- Department of Biomedical Engineering, University of California, Irvine, CA, 92697, USA.
- Department of Computer Science, University of California, Irvine, CA, 92697, USA.
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Xia GL, Xu X, You XB, Wang X, Feng DD, Lei S, Jiang RL. Efficacy and nephrotoxicity of polymyxin B in elderly patients with carbapenem resistant bacterial infection. Ann Clin Microbiol Antimicrob 2023; 22:101. [PMID: 37968642 PMCID: PMC10652515 DOI: 10.1186/s12941-023-00647-2] [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: 07/28/2023] [Accepted: 10/24/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND To study the efficacy and nephrotoxicity of polymyxin B in the treatment of elderly patients with carbapenem-resistant organism (CRO) infection. METHODS The clinical and microbiological data of patients with CRO-infected sepsis treated with polymyxin B were retrospectively analyzed. The effective rate, bacterial clearance, incidence and recovery rate of acute renal injury (AKI) and prognosis-related indicators in AKI at different stages were compared. RESULTS The effective rate of 215 elderly patients with CRO infection treated with polymyxin was 50.7%. The total bacterial clearance rate was 44.2%, the total incidence of AKI was 37.2%, the recovery rate of AKI was 35%, and the incidence range of polymyxin B-related AKI was 10.2-37.2%. Logistic multivariate regression analysis showed that the predictors of AKI in elderly patients were high APACHE II score, long duration of polymyxin, chronic renal insufficiency and ineffective outcome; the ROC curve showed that the cutoff value for predicting AKI was a serum creatinine concentration of 73 mmol/L before polymyxin B use, and the AUC was 0.931. CONCLUSIONS Rational use of polymyxin B is safe and effective in elderly patients with CRO infection, and its effective outcome can improve the recovery rate of AKI.
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Affiliation(s)
- G L Xia
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), NO.54 Youdian Road, Hangzhou, 310006, China
| | - X Xu
- The First School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - X B You
- The Third Affiliated Hospital of Zhejiang, Chinese Medical University, Hangzhou, 310009, China
| | - X Wang
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), NO.54 Youdian Road, Hangzhou, 310006, China
| | - D D Feng
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), NO.54 Youdian Road, Hangzhou, 310006, China
| | - S Lei
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), NO.54 Youdian Road, Hangzhou, 310006, China
| | - R L Jiang
- Department of Intensive Care Unit, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Traditional Chinese Medicine), NO.54 Youdian Road, Hangzhou, 310006, China.
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Zhang H, Sumbria RK, Chang R, Sun J, Cribbs DH, Holmes TC, Fisher MJ, Xu X. Erythrocyte-brain endothelial interactions induce microglial responses and cerebral microhemorrhages in vivo. J Neuroinflammation 2023; 20:265. [PMID: 37968737 PMCID: PMC10647121 DOI: 10.1186/s12974-023-02932-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/13/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Cerebral microhemorrhages (CMH) are associated with stroke, cognitive decline, and normal aging. Our previous study shows that the interaction between oxidatively stressed red blood cells (RBC) and cerebral endothelium may underlie CMH development. However, the real-time examination of altered RBC-brain endothelial interactions in vivo, and their relationship with clearance of stalled RBC, microglial responses, and CMH development, has not been reported. METHODS RBC were oxidatively stressed using tert-butylhydroperoxide (t-BHP), fluorescently labeled and injected into adult Tie2-GFP mice. In vivo two-photon imaging and ex vivo confocal microscopy were used to evaluate the temporal profile of RBC-brain endothelial interactions associated with oxidatively stressed RBC. Their relationship with microglial activation and CMH was examined with post-mortem histology. RESULTS Oxidatively stressed RBC stall significantly and rapidly in cerebral vessels in mice, accompanied by decreased blood flow velocity which recovers at 5 days. Post-mortem histology confirms significantly greater RBC-cerebral endothelial interactions and microglial activation at 24 h after t-BHP-treated RBC injection, which persist at 7 days. Furthermore, significant CMH develop in the absence of blood-brain barrier leakage after t-BHP-RBC injection. CONCLUSIONS Our in vivo and ex vivo findings show the stalling and clearance of oxidatively stressed RBC in cerebral capillaries, highlighting the significance of microglial responses and altered RBC-brain endothelial interactions in CMH development. Our study provides novel mechanistic insight into CMH associated with pathological conditions with increased RBC-brain endothelial interactions.
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Affiliation(s)
- Hai Zhang
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Rachita K Sumbria
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, CA, 92618, USA.
- Department of Neurology, University of California, Irvine, CA, 92697, USA.
| | - Rudy Chang
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, CA, 92618, USA
| | - Jiahong Sun
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, CA, 92618, USA
| | - David H Cribbs
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, 92697, USA
| | - Todd C Holmes
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA
| | - Mark J Fisher
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Department of Neurology, University of California, Irvine, CA, 92697, USA.
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA.
- Beckman Laser Institute, University of California, Irvine, CA, 92697, USA.
- Department of Pathology & Laboratory Medicine, University of California, Irvine, CA, 92697, USA.
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping, University of California, Irvine, CA, 92697, USA.
- Department of Biomedical Engineering, University of California, Irvine, CA, 92697, USA.
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Zhang YT, Zhang Z, Zhang YC, Xu X, Wang ZM, Shen T, An XH, Chang D. [Research progress on biomarkers and detection methods for Alzheimer's disease diagnosis in vitro]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1888-1894. [PMID: 38008582 DOI: 10.3760/cma.j.cn112150-20230517-00385] [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: 11/28/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease with insidious onset, posing a serious threat to human physical and mental health. The cognitive impairments caused by AD are generally diffuse and overlap symptomatically with other neurodegenerative diseases. Moreover, the symptoms of AD are often covert, leading to missed opportunities for optimal treatment after diagnosis. Therefore, early diagnosis of AD is crucial. In vitro diagnostic biomarkers not only contribute to the early clinical diagnosis of AD but also aid in further understanding the disease's pathogenesis, predicting disease progression, and observing the effects of novel candidate therapeutic drugs in clinical trials. Currently, although there are numerous biomarkers associated with AD diagnosis, the complex nature of AD pathogenesis, limitations of individual biomarkers, and constraints of clinical detection methods have hindered the development of efficient, cost-effective, and convenient diagnostic methods and standards. This article provides an overview of the research progress on in vitro diagnostic biomarkers and detection methods related to AD in recent years.
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Affiliation(s)
- Y T Zhang
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - Z Zhang
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - Y C Zhang
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - X Xu
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - Z M Wang
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - T Shen
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - X H An
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
| | - D Chang
- Department of Laboratory Medicine, Fudan University Affiliated Pudong Medical Center, Shanghai 201399, China
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Grieco SF, Holmes TC, Xu X. Meeting report for the 2023 UC Irvine Center for Neural Circuit Mapping Conference: structure, function and development of neural circuits. Mol Psychiatry 2023:10.1038/s41380-023-02308-4. [PMID: 37919404 DOI: 10.1038/s41380-023-02308-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Affiliation(s)
- Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
| | - Todd C Holmes
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA.
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Liu M, Wang P, Xie P, Xu X, He L, Chen X, Zhang S, Lin Y, Huang Y, Xia W, Wang L, Liao X, Guo Y, Zhuang X. Expression of ICAM-1 and E-selectin in different metabolic obesity phenotypes: discrepancy for endothelial dysfunction. J Endocrinol Invest 2023; 46:2379-2389. [PMID: 37071373 DOI: 10.1007/s40618-023-02094-4] [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: 02/16/2023] [Accepted: 04/06/2023] [Indexed: 04/19/2023]
Abstract
OBJECTIVES Endothelial dysfunction, the earliest vascular alteration, is a consequence of metabolic disorders associated with obesity. However, it is still unclear whether a proportion of obese individuals without metabolic alterations associated with obesity, defined as "metabolically healthy obesity (MHO)", exhibit better endothelial function. We therefore aimed to investigate the association of different metabolic obesity phenotypes with endothelial dysfunction. METHODS The obese participants without clinical cardiovascular disease from the MESA (Multi-Ethnic Study of Atherosclerosis) were allocated to the different metabolic obesity phenotypes based on their metabolic status, including MHO and metabolically unhealthy obesity (MUO). Associations of metabolic obesity phenotypes with the biomarkers of endothelial dysfunction, including soluble intercellular adhesion molecule-1 (sICAM-1) and soluble E-selectin (sE-selectin), were evaluated using multiple linear regression models. RESULTS Plasma levels of sICAM-1 and sE-selectin were respectively measured in 2371 and 968 participants. Compared to the non-obese participants, those with MUO were associated with higher concentrations of sICAM-1 (β 22.04, 95% CI 14.33-29.75, P < 0.001) and sE-selectin (β 9.87, 95% CI 6.00-13.75, P < 0.001) after adjusting for confounders. However, no differences were found for the concentrations of sICAM-1 (β 0.70, 95% CI - 8.91 to 10.32, P = 0.886) and sE-selectin (β 3.69, 95% CI - 1.13 to 8.51, P = 0.133) in the participants with MHO compared to the non-obese participants. CONCLUSIONS Individuals with MUO were associated with elevated biomarkers of endothelial dysfunction, but the association with endothelial dysfunction was not found in those with MHO, indicating that the individuals with MHO might exhibit better endothelial function.
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Affiliation(s)
- M Liu
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - P Wang
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - P Xie
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - X Xu
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - L He
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - X Chen
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - S Zhang
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - Y Lin
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - Y Huang
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - W Xia
- Department of Hypertension and Vascular Disease, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - L Wang
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - X Liao
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China
| | - Y Guo
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China.
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China.
| | - X Zhuang
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Rd., Guangzhou, 510080, China.
- NHC Key Laboratory of Assisted Circulation (Sun Yat-Sen University), Guangzhou, China.
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Ye Y, Sun G, Ren Z, Liang Y, Luo H, Lin P, Wang X, Dong Z, Huang L, Qin L, Yu W, Wang G, Zhou Y, Tang J, Lou J, Liu Y, Zeng X, Chen Y, Li Y, Zhang Q, Huang J, Zhu P, Lin L, Zhang X, Xu X. Quantification of human embryonic ζ-globin chains in Southeast Asian deletion (-- SEA) carriers. J Clin Pathol 2023; 76:784-789. [PMID: 36008105 DOI: 10.1136/jcp-2022-208159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 07/12/2022] [Indexed: 11/04/2022]
Abstract
AIMS Reactivation of embryonic ζ-globin is a promising strategy for genetic treatment of α-thalassaemia. However, quantification of ζ-globin as a quantitative trait in α-thalassaemia carriers and patients remains incompletely understood. In this study, we aimed to set up a reliable approach for the quantification of ζ-globin in α-thalassaemia carriers, followed by a population study to investigate its expression patterns. METHODS ζ-globin was purified as monomers from cord blood haemolysate of a Hb Bart's fetus, followed by absolute protein quantification, which was then tested by in-house ELISA system and introduced as protein standard. It was then used for large-scale quantification in peripheral blood samples from 6179 individuals. Finally, liquid chromatography-tandem mass spectrometry (LC-MS/MS) introduced as an independent validating approach by measuring ζ-globin expression in a second cohort of 141-SEA/αα carriers. RESULTS The ELISA system was proved sensitive in distinguishing individuals with varied extent of ζ-globin. Large scale quantitative study of this --SEA/αα carrier cohort indicated the high diversity of ζ-globin expression ranging from 0.00155 g/L to 1.48778 g/L. Significant positive correlation between ELISA and LC-MS/MS (R=0.400, p<0.001) was observed and it is more sensitive in distinguishing the samples with extreme expression of ζ-globin (R=0.650, p<0.001). CONCLUSION Our study has reported reliable approaches for the quantification of ζ-globin and presented the expression patterns of ζ-globin among the --SEA/αα carrier population, which might lay a foundation on subsequent genotype-phenotype studies on mechanisms of delayed haemoglobin switch in α-thalassaemia.
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Affiliation(s)
- Yuhua Ye
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Guoying Sun
- BGI Genomics, BGI-Shenzhen, Shenzhen, Guangdong, People's Republic of China
| | - Zhe Ren
- BGI Genomics, BGI-Shenzhen, Shenzhen, Guangdong, People's Republic of China
| | - Yidan Liang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Hualei Luo
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Peng Lin
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Xingmin Wang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Zejun Dong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Li Huang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Lang Qin
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Wenfang Yu
- Department of Blood Transfusion, Shanghai General Hospital, Shanghai, People's Republic of China
| | - Ge Wang
- Department of Clinical Laboratory, Zhuhai Municipal Maternal and Child Healthcare Hospital, Zhuhai, Guangdong, People's Republic of China
| | - Yuqiu Zhou
- Department of Clinical Laboratory, Zhuhai Municipal Maternal and Child Healthcare Hospital, Zhuhai, Guangdong, People's Republic of China
| | - Jia Tang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangzhou, People's Republic of China
| | - Jiwu Lou
- Dongguan Institute of Reproduction and Genetics, Dongguan Maternal and Children Health Hospital, Dongguan, People's Republic of China
| | - Yanhui Liu
- Dongguan Institute of Reproduction and Genetics, Dongguan Maternal and Children Health Hospital, Dongguan, People's Republic of China
| | - Xianqi Zeng
- Women and Children's Health Hospital of Shaoguan, Shaoguan, Guangdong, People's Republic of China
| | - Yajun Chen
- Women and Children's Health Hospital of Shaoguan, Shaoguan, Guangdong, People's Republic of China
| | - Yihong Li
- Department of Gynecology and Obstetrics, Southern Medical University, Guangzhou, People's Republic of China
| | - Qianqian Zhang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Jin Huang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
| | - Ping Zhu
- Department of Immunology, Southern Medical University, Guangzhou, People's Republic of China
| | - Liang Lin
- BGI Genomics, BGI-Shenzhen, Shenzhen, Guangdong, People's Republic of China
| | - Xinhua Zhang
- Department of Hematology, 923rd Hospital of the People's Liberation Army, Nanning, Guangxi, People's Republic of China
| | - Xiangmin Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, People's Republic of China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, People's Republic of China
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Cai LM, Wang XY, Feng GS, Zeng YP, Xu X, Guo YL, Tian J, Gao HM. [Poisonous substances and geographical distribution of poisoning in hospitalized children based on data from 25 hospitals in China from 2016 to 2020]. Zhonghua Er Ke Za Zhi 2023; 61:910-916. [PMID: 37803858 DOI: 10.3760/cma.j.cn112140-20230328-00214] [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: 10/08/2023]
Abstract
Objective: To investigate the poisonous substances and geographical distribution of poisoning in children in China. Methods: A cross-sectional study. The clinical data of 8 385 hospitalized children from January 2016 to December 2020 were extracted from the FUTang Updating Medical Records database. These children aged 0 to 18 years and were admitted due to poisoning. They were grouped according to age (newborns and infants, toddlers, preschoolers, school-age children, adolescents), place of residence (Northeast China, North China, Central China, East China, South China, Southwest China, Northwest China), and mode of discharge (discharge under medical advice, transfer to another hospital under medical advice, discharge without medical advice, death, other). The poisonous substance and causes of poisoning in different groups were analyzed. Results: Among these 8 385 children, 4 734 (56.5%) were male and 3 651 (43.5%) female, with a male-to-female ratio of 1.3∶1. The age was 3 (2, 7) years. The prevalence of poisoning was 51.8% (4 343/8 385) in toddlers, 16.5% (1 380/8 385) in adolescents, 14.8% (1 242/8 385) in preschoolers, 14.4% (1 206/8 385) in school-age children, and 2.5% (214/8 385) in newborns and infants. Drug poisoning accounted for 43.5% (3 649/8 385) and pesticide accounted for 26.8% (2 249/8 385). Drug poisoning was more common in adolescents (684/1 380, 49.6%) and toddlers (2 041/4 343, 47.0%); non-drug poisoning was more common in school-age children (891/1 206, 73.9%), of which carbon monoxide was mainly in newborns and infants (41/214, 19.2%) and food poisoning in children of school age (241/1 206, 20.0%). Regarding regional characteristics, drug poisoning was more frequent in South China (188/246, 64.2%) and non-drug poisoning was more frequent in Southwest China (815/1 123, 72.5%). For drugs, anti-epileptic drugs, sedative-hypnotic drugs and anti-Parkinson's disease drugs had a higher proportion of poisoning in North China (138/1 034, 13.0%) than that in other regions. For non-drug poisoning, pesticides (375/1 123, 33.3%), food poisoning (209/1 123, 18.6%) and contact with poisonous animals (86/1 123, 7.7%) were more common in Southwest China than in other regions; carbon monoxide poisoning was more common in North China (81/1 034, 7.6%) and Northwest China (65/1 064, 6.3%). In Central China, poisoning happened more in toddlers (792/1 295, 61.2%) and less in adolescents (115/1 295, 8.8%) than in other regions. Regarding different age groups, poisoning in adolescent happened more in Northeast China (121/457, 26.5%), North China (240/1 034, 23.2%), and Northwest China (245/1 064, 23.0%). The rate of discharge under medical advice, discharge without medical advice, and mortality rate within the 5 years were 77.0% (6 458/8 385), 20.8% (1 743/8 385), 0.5% (40/8 385), respectively. Conclusions: Poisoning is more common in male and toddlers. Poisonous substances show a regional characteristic and vary in different age groups, with drugs and insecticides as the most common substances.
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Affiliation(s)
- L M Cai
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X Y Wang
- Big Data Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - G S Feng
- Big Data Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y P Zeng
- Department of Medical Record Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X Xu
- Information Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y L Guo
- Beijing Key Laboratory for Pediatric Diseases of Otolaryngology, Head and Neck Surgery, MOE Key Laboratory of Major Diseases in Children, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J Tian
- President's Office, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - H M Gao
- Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Grieco SF, Holmes TC, Xu X. Monosynaptic rabies tracing maps inputs to CA1 cells in old AD model mice (APP-KI). Mol Psychiatry 2023; 28:4021. [PMID: 38291104 DOI: 10.1038/s41380-023-02393-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Affiliation(s)
- Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
| | - Todd C Holmes
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA.
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Lin L, Guo YN, Xu X, Huang LP, Yang QP, Yan JY. Analysis of maternal and fetal outcomes and establishment of prediction model of vaginal delivery in pregnant women with pre-eclampsia complicated with fetal growth restriction. Eur Rev Med Pharmacol Sci 2023; 27:9947-9954. [PMID: 37916364 DOI: 10.26355/eurrev_202310_34173] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
OBJECTIVE This study aimed to analyze the maternal and fetal outcomes of pregnant women with pre-eclampsia (PE), complicated with fetal growth restriction (FGR), and establish a prediction model of vaginal delivery to guide the selection of the delivery mode. PATIENTS AND METHODS The study included 208 pregnant women with PE complicated with FGR. Of them, 49 patients were in the vaginal delivery group, and 159 patients were in the cesarean section group. The relevant maternal and fetal outcomes were analyzed. Patients were randomly divided into the training sample group and the test group with a ratio of 2:1. The three-layer neural network was used to select 24 maternal and infant outcome factors as the input nodes of the neural network to build a vaginal delivery prediction model. RESULTS Results showed that the gestational age, the highest systolic and diastolic blood pressure, body weight, body length, and placental weight of the newborns in the vaginal delivery group were significantly higher than those in the cesarean section group. Incidence of preterm birth, amniotic fluid grade III, oligohydramnios, and severe small-for-gestational-age (sSGA) neonates were significantly lower in the vaginal delivery group compared to the cesarean section group (p < 0.05). A three-layer neural network delivery prediction model was constructed, and the accuracy rate of fitting with test samples was 91.80%. CONCLUSIONS There is no significant difference in the incidence of maternal and fetal complications in PE complicated with FGR in different delivery methods. The three-layer neural network prediction model has good prediction ability for vaginal delivery of PE complicated with FGR and may be applied in clinical practice.
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Affiliation(s)
- L Lin
- College of Clinical Medicine for Obstetrics and Gynecology and Pediatrics, Fujian Medical University, Department of Obstetrics, Fujian Maternity and Child Health Hospital, Fuzhou, Fujian, China.
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Li M, Xu G, Cui Y, Wang M, Wang H, Xu X, Duan S, Shi J, Feng F. CT-based radiomics nomogram for the preoperative prediction of microsatellite instability and clinical outcomes in colorectal cancer: a multicentre study. Clin Radiol 2023; 78:e741-e751. [PMID: 37487841 DOI: 10.1016/j.crad.2023.06.012] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 06/15/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023]
Abstract
AIM To develop and validate a computed tomography (CT)-based radiomics nomogram for preoperative prediction of microsatellite instability (MSI) status and clinical outcomes in colorectal cancer (CRC) patients. MATERIALS AND METHODS This retrospective study enrolled 497 CRC patients from three centres. Least absolute shrinkage and selection operator regression was utilised for feature selection and constructing the radiomics signature. Univariate and multivariate logistic regression analyses were employed to identify significant clinical variables. The radiomics nomogram was constructed by integrating the radiomics signature and the identified clinical variables. The performance of the nomogram was evaluated through receiver operating characteristic curves, calibration curves, and decision curve analysis. Kaplan-Meier analysis was performed to investigate the prognostic value of the nomogram. RESULTS The radiomics signature comprised 10 radiomics features associated with MSI status. The nomogram, integrating the radiomics signature and independent predictors (age, location, and thickness), demonstrated favourable calibration and discrimination, achieving areas under the receiver operating characteristic (ROC) curves (AUCs) of 0.89 (95% confidence interval [CI]: 0.83-0.95), 0.87 (95% CI: 0.79-0.95), 0.88 (95% CI: 0.81-0.96), and 0.86 (95% CI: 0.78-0.93) in the training cohort, internal validation cohort, and two external validation cohorts, respectively. The nomogram exhibited superior performance compared to the clinical model (p<0.05). Additionally, survival analysis demonstrated that the nomogram successfully stratified stage II CRC patients based on prognosis (hazard ratio [HR]: 0.357, p=0.022). CONCLUSION The radiomics nomogram demonstrated promising performance in predicting MSI status and stratifying the prognosis of patients with CRC.
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Affiliation(s)
- M Li
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China; Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - G Xu
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China; Department of Radiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Y Cui
- Department of Radiology, Shanxi Cancer Hospital, Shanxi 030013, Shanxi Province, China
| | - M Wang
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - H Wang
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - X Xu
- Department of Radiotherapy, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - S Duan
- GE Healthcare China, Shanghai 210000, China
| | - J Shi
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
| | - F Feng
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
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Tian S, Liu Y, Mao X, Xu X, Wang C, Han G, Yang Y, Wang J, He SM, Zhang W. A Multicenter Study on Deep Learning for Glioblastoma Auto-Segmentation with Prior Knowledge in Multimodal Imaging. Int J Radiat Oncol Biol Phys 2023; 117:e488. [PMID: 37785541 DOI: 10.1016/j.ijrobp.2023.06.2299] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) A precise radiotherapy plan is required to ensure accurate delineation of gross tumor volumes (GTV) and clinical target volumes (CTV1 and CTV2) of glioblastomas (GBMs). However, traditional manual delineation is labor intensive and highly dependent on oncologists' experience. To construct and evaluate a deep learning-based automatic delineation method using prior knowledge in multimodal medical imaging to automate precise GTV, CTV1 and CTV2 contouring in GBM patients. MATERIALS/METHODS We retrospectively collected the CT and MRI scans of 55 eligible patients with histologically proven high-grade glioma (HGG) from an institute, these scans were performed with non-enhanced CT (CT), contrast-enhanced T1-weighted (T1C) and T2-FLAIR (T2F) sequences. We proposed a two-stage automatic segmentation framework (PKMI-Net) for GTV, CTV1 and CTV2 based on deep learning using prior knowledge in multimodal medical imaging, and its segmentation performance was evaluated with dice similarity coefficient (DSC), 95% Harsdorff distance (HD95), average surface distance (ASD) and relative volume difference (RVD). To further investigate the generalizability of our method, we designed and conducted two evaluation strategies (Mix and Cross) on four multicenter datasets (including 55 patients, 37 patients, 21 patients and 35 patients). RESULTS The evaluation results with an 11-patient test set from the single institute were summarized in Table 1, the proposed method demonstrated the best accuracy in segmenting, respectively, GTV, CTV1 and CTV, achieving a DSC of 0.94, 0.95 and 0.92; HD95 of 2.07 mm, 1.18 mm and 3.80 mm; ASD of 0.69 mm, 0.39 mm and 1.13 mm and RVE of 5.50%, 3.97% and 9.68%. In the multicenter evaluation, the segmentation performance of our method implemented with the Cross strategy was comparable to that with the Mix strategy, demonstrating that our method had high and stable generalizability across multicenter datasets in automatically segmenting GTV, CTV1 and CTV2. CONCLUSION Our proposed method achieved promising results in automatically segmenting gliomas across various datasets, which could improve the quality and efficiency of glioblastoma radiotherapy.
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Affiliation(s)
- S Tian
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Y Liu
- United Imaging Research Institute of Innovative Medical Equipment, Shenzhen, China
| | - X Mao
- Radiotherapy Center, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - X Xu
- Department of Radiation Oncology, The Second Affiliated Hospital of Shandong First Medical University, Tai'an, China
| | - C Wang
- Department of Oncology, Sanya Central Hospital, Sanya, China
| | - G Han
- Department of Radiation Oncology, Hubei Cancer Hospital, Wuhan, China
| | - Y Yang
- Department of Radiation Oncology, Peking University International Hospital, Beijing, China
| | - J Wang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - S M He
- United Imaging Research Institute of Intelligent Imaging, Beijing, China
| | - W Zhang
- Shanghai United Imaging Healthcare Technology Co., Ltd, ShangHai, China
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Grieco SF, Holmes TC, Xu X. Probing neural circuit mechanisms in Alzheimer's disease using novel technologies. Mol Psychiatry 2023; 28:4407-4420. [PMID: 36959497 PMCID: PMC10827671 DOI: 10.1038/s41380-023-02018-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/20/2023] [Accepted: 02/24/2023] [Indexed: 03/25/2023]
Abstract
The study of Alzheimer's Disease (AD) has traditionally focused on neuropathological mechanisms that has guided therapies that attenuate neuropathological features. A new direction is emerging in AD research that focuses on the progressive loss of cognitive function due to disrupted neural circuit mechanisms. Evidence from humans and animal models of AD show that dysregulated circuits initiate a cascade of pathological events that culminate in functional loss of learning, memory, and other aspects of cognition. Recent progress in single-cell, spatial, and circuit omics informs this circuit-focused approach by determining the identities, locations, and circuitry of the specific cells affected by AD. Recently developed neuroscience tools allow for precise access to cell type-specific circuitry so that their functional roles in AD-related cognitive deficits and disease progression can be tested. An integrated systems-level understanding of AD-associated neural circuit mechanisms requires new multimodal and multi-scale interrogations that longitudinally measure and/or manipulate the ensemble properties of specific molecularly-defined neuron populations first susceptible to AD. These newly developed technological and conceptual advances present new opportunities for studying and treating circuits vulnerable in AD and represent the beginning of a new era for circuit-based AD research.
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Affiliation(s)
- Steven F Grieco
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
| | - Todd C Holmes
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA
- Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, CA, 92697, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, CA, 92697, USA.
- Center for Neural Circuit Mapping (CNCM), University of California, Irvine, CA, 92697, USA.
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Wang K, Gao FQ, Xu X. [The clinical practice and consideration for donor liver expansion]. Zhonghua Wai Ke Za Zhi 2023; 61:826-832. [PMID: 37653983 DOI: 10.3760/cma.j.cn112139-20230607-00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Liver transplantation is the most effective method to address end-stage liver disease. However, there is a huge imbalance between organ supply and demand in China. Recently,effective expansion of the donor liver has become a hot research direction in academia. Authors' group comprehensively integrates domestic and foreign evidence-based medical evidence, the latest academic outcomes and clinical experience. Based on the innovative viewshed of crossfusion between biomedical engineering and medicine, author group systematically elaborate in the main strategies for expanding the liver donor pool, including the multichannel expansion of marginal donor liver,multidimensional innovation of technologies in transplant surgery and diversified exploration of alternative resources of organs. The author group aims to promote the construction of a large cohort,the integration of big data,and the output of high quality research,achieving innovative theory and clinical translation in organ transplantation,thus promoting the higher quality development of liver transplantation in China.
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Affiliation(s)
- K Wang
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
| | - F Q Gao
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
| | - X Xu
- Zhejiang University School of Medicine,Institute of Organ Transplantation of Zhejiang University,Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province,Hangzhou 310058,China
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Zheng X, Wu B, Liu Y, Simmons SK, Kim K, Clarke GS, Ashiq A, Park J, Wang Z, Tong L, Wang Q, Xu X, Levin JZ, Jin X. Massively parallel in vivo Perturb-seq reveals cell type-specific transcriptional networks in cortical development. bioRxiv 2023:2023.09.18.558077. [PMID: 37790302 PMCID: PMC10542124 DOI: 10.1101/2023.09.18.558077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Systematic analysis of gene function across diverse cell types in vivo is hindered by two challenges: obtaining sufficient cells from live tissues and accurately identifying each cell's perturbation in high-throughput single-cell assays. Leveraging AAV's versatile cell type tropism and high labeling capacity, we expanded the resolution and scale of in vivo CRISPR screens: allowing phenotypic analysis at single-cell resolution across a multitude of cell types in the embryonic brain, adult brain, and peripheral nervous system. We undertook extensive tests of 86 AAV serotypes, combined with a transposon system, to substantially amplify labeling and accelerate in vivo gene delivery from weeks to days. Using this platform, we performed an in utero genetic screen as proof-of-principle and identified pleiotropic regulatory networks of Foxg1 in cortical development, including Layer 6 corticothalamic neurons where it tightly controls distinct networks essential for cell fate specification. Notably, our platform can label >6% of cerebral cells, surpassing the current state-of-the-art efficacy at <0.1% (mediated by lentivirus), and achieve analysis of over 30,000 cells in one experiment, thus enabling massively parallel in vivo Perturb-seq. Compatible with various perturbation techniques (CRISPRa/i) and phenotypic measurements (single-cell or spatial multi-omics), our platform presents a flexible, modular approach to interrogate gene function across diverse cell types in vivo, connecting gene variants to their causal functions.
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Affiliation(s)
- Xinhe Zheng
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Boli Wu
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Yuejia Liu
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Sean K. Simmons
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Kwanho Kim
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Grace S. Clarke
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Abdullah Ashiq
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Joshua Park
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Zhilin Wang
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
| | - Liqi Tong
- Center for Neural Circuit Mapping, Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Qizhao Wang
- Center for Neural Circuit Mapping, Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Xiangmin Xu
- Center for Neural Circuit Mapping, Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Joshua Z. Levin
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Xin Jin
- Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, USA
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Emami MR, Espinoza A, Young CS, Ma F, Farahat PK, Felgner PL, Chamberlain JS, Xu X, Pyle AD, Pellegrini M, Villalta SA, Spencer MJ. Innate and adaptive AAV-mediated immune responses in a mouse model of Duchenne muscular dystrophy. Mol Ther Methods Clin Dev 2023; 30:90-102. [PMID: 37746243 PMCID: PMC10512012 DOI: 10.1016/j.omtm.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 06/08/2023] [Indexed: 09/26/2023]
Abstract
High systemic doses of adeno-associated viruses (AAVs) have been associated with immune-related serious adverse events (SAEs). Although AAV was well tolerated in preclinical models, SAEs were observed in clinical trials, indicating the need for improved preclinical models to understand AAV-induced immune responses. Here, we show that mice dual-dosed with AAV9 at 4-week intervals better recapitulate aspects of human immunity to AAV. In the model, anti-AAV9 immunoglobulin G (IgGs) increased in a linear fashion between the first and second AAV administrations. Complement activation was only observed in the presence of high levels of both AAV and anti-AAV IgG. Myeloid-derived pro-inflammatory cytokines were significantly induced in the same pattern as complement activation, suggesting that myeloid cell activation to AAV may rely on the presence of both AAV and anti-AAV IgG complexes. Single-cell RNA sequencing of peripheral blood mononuclear cells confirmed that activated monocytes were a primary source of pro-inflammatory cytokines and chemokines, which were significantly increased after a second AAV9 exposure. The same activated monocyte clusters expressed both Fcγ and complement receptors, suggesting that anti-AAV-mediated activation of myeloid cells through Fcγ receptors and/or complement receptors is one mechanism by which anti-AAV antigen complexes may prime antigen-presenting cells and amplify downstream immunity.
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Affiliation(s)
- Michael R. Emami
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Alejandro Espinoza
- Department of Human Genetics, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
- Institute for Quantitative and Computational Biosciences – The Collaboratory, University of California, Los Angeles, Los Angeles, CA, USA
| | | | - Feiyang Ma
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Philip K. Farahat
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, USA
| | - Philip L. Felgner
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, USA
| | - Jeffrey S. Chamberlain
- Department of Neurology, University of Washington School of Medicine, Seattle, WA, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Washington School of Medicine, Seattle, WA, USA
- Department of Biochemistry, University of Washington School of Medicine, Seattle, WA, USA
- Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, CA, USA
| | - April D. Pyle
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, USA
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, USA
| | - Matteo Pellegrini
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, USA
- Institute for Genomics and Proteomics, University of California, Los Angeles, Los Angeles, CA, USA
| | - S. Armando Villalta
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, USA
- Institute of Immunology, University of California, Irvine, Irvine, CA, USA
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Melissa J. Spencer
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, USA
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Xu X, Cai YX, Liu YH, Shen Y, Pan Y, Yao H, Wang XL, Yang P. [Comparison of incubation periods of infections of Omicron variants BA.2 and BF.7 in Beijing]. Zhonghua Liu Xing Bing Xue Za Zhi 2023; 44:1397-1401. [PMID: 37743272 DOI: 10.3760/cma.j.cn112338-20230316-00153] [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: 09/26/2023]
Abstract
Objective: To understand the incubation periods of infections of Omicron variants BA.2 and BF.7 in two COVID-19 epidemics and related factors in Beijing and provide basic parameters for the establishment of 2019-nCoV dynamic transmission model. Methods: The COVID-19 cases with specific exposure time and onset time in the Omicron variant BA.2 infection epidemic in April 2022 and in the Omicron variant BF.7 infection epidemic in October 2022 in Beijing were included in the analysis. The rank-sum test was conducted to estimate the differences in the incubation period between two types of infections. The incubation period distribution of the Omicron variant infection was fitted by using Weibull, Gamma and lognormal distributions. Multivariate analysis of variance was conducted to assess the effects of age, sex, variant type and vaccination status on the incubation periods. Results: A total of 64 cases of variant BA.2 infection and 58 cases of variant BF.7 infection were included. The M(Q1,Q3) of the incubation period was 3.00 (3.00, 4.00) days for BA.2 infection and 3.00 (2.00, 3.25) days for BF.7 infection. The lognormal distribution was the best fit. Multivariate analysis of variance showed that there were some differences in the incubation periods between two types of infections of Omicron variants, and the incubation period of variant BF.7 infection was shorter than that of variant BA.2 infection. Conclusion: Omicron variant BF.7 infection had shorter incubation period compared with Omicron variant BA.2 infection.
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Affiliation(s)
- X Xu
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Y X Cai
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Y H Liu
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Y Shen
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Y Pan
- Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - H Yao
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - X L Wang
- Beijing Office of Global Health, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - P Yang
- Central Office, Beijing Center for Disease Prevention and Control, Beijing 100013, China
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Lin X, Cyrus N, Avila B, Holmes TC, Xu X. Hippocampal CA3 inhibitory neurons receive extensive noncanonical synaptic inputs from CA1 and subicular complex. J Comp Neurol 2023; 531:1333-1347. [PMID: 37312626 PMCID: PMC10525020 DOI: 10.1002/cne.25510] [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: 02/02/2023] [Revised: 03/06/2023] [Accepted: 04/26/2023] [Indexed: 06/15/2023]
Abstract
Hippocampal CA3 is traditionally conceptualized as a brain region within a unidirectional feedforward trisynaptic pathway that links major hippocampal subregions. Recent genomic and viral tracing studies indicate that the anatomical connectivity of CA3 and the trisynaptic pathway is more complex than initially expected and suggests that there may be cell type-specific input gradients throughout the three-dimensional hippocampal structure. In several recent studies using multiple viral tracing approaches, we describe subdivisions of the subiculum complex and ventral hippocampal CA1 that show significant back projections to CA1 and CA3 excitatory neurons. These novel connections form "noncanonical" circuits that run in the opposite direction relative to the well-characterized feedforward pathway. Diverse subtypes of GABAergic inhibitory neurons participate within the trisynaptic pathway. In the present study, we have applied monosynaptic retrograde viral tracing to examine noncanonical synaptic inputs from CA1 and subicular complex to the inhibitory neuron in hippocampal CA3. We quantitatively mapped synaptic inputs to CA3 inhibitory neurons to understand how they are connected within and beyond the hippocampus formation. Major brain regions that provide typical inputs to CA3 inhibitory neurons include the medial septum, the dentate gyrus, the entorhinal cortex, and CA3. Noncanonical inputs from ventral CA1 and subicular complex to CA3 inhibitory neurons follow a proximodistal topographic gradient with regard to CA3 subregions. We find novel noncanonical circuit connections between inhibitory CA3 neurons and ventral CA1, subiculum complex, and other brain regions. These results provide a new anatomical connectivity basis to further study the function of CA3 inhibitory neurons.
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Affiliation(s)
- Xiaoxiao Lin
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA 92697
| | - Neeyaz Cyrus
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA 92697
| | - Brenda Avila
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA 92697
| | - Todd C. Holmes
- Department Physiology & Biophysics, School of Medicine, University of California, Irvine, CA 92697
| | - Xiangmin Xu
- Department Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA 92697
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Sharon CE, Tortorello GN, Ma KL, Huang AC, Xu X, Giles LR, McGettigan S, Kreider K, Schuchter LM, Mathew AJ, Amaravadi RK, Gimotty PA, Miura JT, Karakousis GC, Mitchell TC. Long-term outcomes to neoadjuvant pembrolizumab based on pathological response for patients with resectable stage III/IV cutaneous melanoma. Ann Oncol 2023; 34:806-812. [PMID: 37414215 DOI: 10.1016/j.annonc.2023.06.006] [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: 03/09/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND While neoadjuvant immunotherapy for melanoma has shown promising results, the data have been limited by a relatively short follow-up time, with most studies reporting 2-year outcomes. The goal of this study was to determine long-term outcomes for stage III/IV melanoma patients treated with neoadjuvant and adjuvant programmed cell death receptor 1 (PD-1) inhibition. PATIENTS AND METHODS This is a follow-up study of a previously published phase Ib clinical trial of 30 patients with resectable stage III/IV cutaneous melanoma who received one dose of 200 mg IV neoadjuvant pembrolizumab 3 weeks before surgical resection, followed by 1 year of adjuvant pembrolizumab. The primary outcomes were 5-year overall survival (OS), 5-year recurrence-free survival (RFS), and recurrence patterns. RESULTS We report updated results at 5 years of follow-up with a median follow-up of 61.9 months. No deaths occurred in patients with a major pathological response (MPR, <10% viable tumor) or complete pathological response (pCR, no viable tumor) (n = 8), compared to a 5-year OS of 72.8% for the remainder of the cohort (P = 0.12). Two of eight patients with a pCR or MPR had a recurrence. Of the patients with >10% viable tumor remaining, 8 of 22 patients (36%) had a recurrence. Additionally, the median time to recurrence was 3.9 years for patients with ≤10% viable tumor and 0.6 years for patients with >10% viable tumor (P = 0.044). CONCLUSIONS The 5-year results from this trial represent the longest follow-up of a single-agent neoadjuvant PD-1 trial to date. Response to neoadjuvant therapy continues to be an important prognosticator with regard to OS and RFS. Additionally, recurrences in patients with pCR occur later and are salvageable, with a 5-year OS of 100%. These results demonstrate the long-term efficacy of single-agent neoadjuvant/adjuvant PD-1 blockade in patients with a pCR and the importance of long-term follow-up for these patients. TRIAL REGISTRATION Clinicaltrials.gov, NCT02434354.
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Affiliation(s)
- C E Sharon
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - G N Tortorello
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - K L Ma
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia
| | - A C Huang
- Department of Medicine and Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - X Xu
- Departments of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia
| | - L R Giles
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - S McGettigan
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - K Kreider
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - L M Schuchter
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - A J Mathew
- Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - R K Amaravadi
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - P A Gimotty
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA
| | - J T Miura
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - G C Karakousis
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - T C Mitchell
- Medicine, Hospital of the University of Pennsylvania, Philadelphia; Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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Li Y, Zhang Y, Qin L, Shang H, Li P, Xiao B, Ye Y, Xu X, Zhang X, Wang L. Analysis of Hematological Indices and Splenectomy Rates in 2,130 Patients with Hemoglobin H Diseases or β-Thalassemia. Acta Haematol 2023; 146:458-464. [PMID: 37573774 DOI: 10.1159/000533233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 07/24/2023] [Indexed: 08/15/2023]
Abstract
INTRODUCTION Splenomegaly and hypersplenism are common complications of thalassemia patients due to the excessive clearance of defective red blood cells from the spleen. To date, splenectomy has been considered one of the most effective treatments for splenomegaly, reducing clinical severity among thalassemia patients. Thus, we aim to investigate the differences in splenectomy rates and hematological indices among thalassemia patients with different genotypes. METHOD In this study, we analyzed the clinical data of thalassemia in 2,130 patients admitted to the 923rd Hospital of the People's Liberation Army from January 2006 to December 2020, and the statistical software SPSS 26.0 was applied to analyze the data. RESULT Of the 2,130 patients with thalassemia, 265 patients underwent splenectomy. It was determined that significantly more patients with hemoglobin H (HbH) disease, a form of α-thalassemia, have undergone splenectomy than β-thalassemia patients (20% vs. 7%). Further, HbH disease patients were diagnosed at a significantly older age than β-thalassemia patients. CONCLUSION The greater probability of HbH disease patients undergoing splenectomy is likely influenced by multiple factors, including their lower dependency on transfusion, leading to high spleen compensatory stress on the spleen, and the destruction of defective erythrocytes. In contrast, β-thalassemia is clinically more severe and less tolerant of hemoglobin fluctuations. Based on these findings, clinicians are suggested to pay more attention to HbH disease patients as many of them are still under-transfused, which could lead to chronic hemolysis and more severe hepatosplenomegaly. These results might offer insight for improving the clinical management of patients with different types of thalassemia.
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Affiliation(s)
- Yaoyun Li
- Department of Pediatrics, 923rd Hospital of the People's Liberation Army, Nanning, China
| | - Yaqing Zhang
- Office of Clinical Trial Institute, Jiangbin Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Lang Qin
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China,
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, China,
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, China,
| | - Hangning Shang
- Clinical Laboratory, 923rd Hospital of the People's Liberation Army, Nanning, China
| | - Pingping Li
- Clinical Laboratory, 923rd Hospital of the People's Liberation Army, Nanning, China
| | - Bin Xiao
- Department of Pediatrics, 923rd Hospital of the People's Liberation Army, Nanning, China
| | - Yuhua Ye
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, China
| | - Xiangmin Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- Innovation Center for Diagnostics and Treatment of Thalassemia, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Guangdong Genetics Testing Engineering Research Center, Guangzhou, China
| | - Xinhua Zhang
- Department of Hematology, 923rd Hospital of the People's Liberation Army, Nanning, China
| | - Li Wang
- Department of Pediatrics, 923rd Hospital of the People's Liberation Army, Nanning, China
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Yu J, Zhang K, Jin S, Su Z, Xu X, Zhang H. [Sinogram interpolation combined with unsupervised image-to-image translation network for CT metal artifact correction]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1214-1223. [PMID: 37488804 PMCID: PMC10366526 DOI: 10.12122/j.issn.1673-4254.2023.07.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
OBJECTIVE To propose a framework that combines sinogram interpolation with unsupervised image-to-image translation (UNIT) network to correct metal artifacts in CT images. METHODS The initially corrected CT image and the prior image without artifacts, which were considered as different elements in two different domains, were input into the image transformation network to obtain the corrected image. Verification experiments were carried out to assess the effectiveness of the proposed method using the simulation data, and PSNR and SSIM were calculated for quantitative evaluation of the performance of the method. RESULTS The experiment using the simulation data showed that the proposed method achieved better results for improving image quality as compared with other methods, and the corrected images preserved more details and structures. Compared with ADN algorithm, the proposed algorithm improved the PSNR and SSIM by 2.4449 and 0.0023 when the metal was small, by 5.9942 and 8.8388 for images with large metals, and by 8.8388 and 0.0130 when both small and large metals were present, respectively. CONCLUSION The proposed method for metal artifact correction can effectively remove metal artifacts, improve image quality, and preserve more details and structures on CT images.
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Affiliation(s)
- J Yu
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - K Zhang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - S Jin
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - Z Su
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - X Xu
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
| | - H Zhang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Key Laboratory of Medical Image Processing, Southern Medical University, Guangzhou 510515, China
- Guangdong Provincial Engineering Laboratory for Medical Imaging and Diagnostic Technology, Southern Medical University, Guangzhou 510515, China
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50
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Nekanti U, Sakthivel P, Zahedi A, Creasman DA, Nishi RA, Dumont CM, Piltti KM, Guardamondo GL, Hernandez N, Chen X, Song H, Lin X, Martinez J, On L, Lakatos A, Pawar K, David BT, Guo Z, Seidlits SK, Xu X, Shea LD, Cummings BJ, Anderson AJ. Multichannel bridges and NSC synergize to enhance axon regeneration, myelination, synaptic reconnection, and recovery after SCI. Res Sq 2023:rs.3.rs-3044426. [PMID: 37502943 PMCID: PMC10371146 DOI: 10.21203/rs.3.rs-3044426/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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Regeneration in the injured spinal cord is limited by physical and chemical barriers. Acute implantation of a multichannel poly(lactide-co-glycolide) (PLG) bridge mechanically stabilizes the injury, modulates inflammation, and provides a permissive environment for rapid cellularization and robust axonal regrowth through this otherwise inhibitory milieu. However, without additional intervention, regenerated axons remain largely unmyelinated (<10%), limiting functional repair. While transplanted human neural stem cells (hNSC) myelinate axons after spinal cord injury (SCI), hNSC fate is highly influenced by the SCI inflammatory microenvironment, also limiting functional repair. Accordingly, we investigated the combination of PLG scaffold bridges with hNSC to improve histological and functional outcome after SCI. In vitro, hNSC culture on a PLG scaffold increased oligodendroglial lineage selection after inflammatory challenge. In vivo, acute PLG bridge implantation followed by chronic hNSC transplantation demonstrated a robust capacity of donor human cells to migrate into PLG bridge channels along regenerating axons and integrate into the host spinal cord as myelinating oligodendrocytes and synaptically integrated neurons. Axons that regenerated through the PLG bridge formed synaptic circuits that connected ipsilateral forelimb muscle to contralateral motor cortex. hNSC transplantation significantly enhanced the total number of regenerating and myelinated axons identified within the PLG bridge. Finally, the combination of acute bridge implantation and hNSC transplantation exhibited robust improvement in locomotor recovery vs. control and hNSC transplant alone. These data identify a successful novel strategy to enhance neurorepair through a temporally layered approach using acute bridge implantation and chronic cell transplantation to spare tissue, promote regeneration, and maximize the function of new axonal connections.
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Affiliation(s)
- Usha Nekanti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Pooja Sakthivel
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Atena Zahedi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Dana A Creasman
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Rebecca A Nishi
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Courtney M Dumont
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Katja M Piltti
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Glenn L Guardamondo
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Norbert Hernandez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xingyuan Chen
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Hui Song
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Xiaoxiao Lin
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Joshua Martinez
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Lillian On
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Anita Lakatos
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
| | - Kiran Pawar
- Department of Medicine, University of British Columbia - Vancouver, Canada
| | - Brian T David
- Department of Neurosurgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Zhiling Guo
- Department of Medicine & Susan Samueli Integrative Health Institute, University of California, Irvine, CA, USA
| | - Stephanie K Seidlits
- Department of Biomedical Engineering, The University of Texas at Austin, TX, USA
| | - Xiangmin Xu
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brian J Cummings
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, CA, USA
| | - Aileen J Anderson
- Sue and Bill Gross Stem Cell Research Center, University of California, Irvine, CA, USA
- Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA
- Department of Physical Medicine and Rehabilitation, University of California, Irvine, CA, USA
- Institute for Memory Impairments & Neurological Disorder, University of California Irvine, CA, USA
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