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Huang XD, Du L, Cheng XC, Lu YX, Liu QW, Wang YW, Liao YJ, Lin DD, Xiao FJ. OTUB1/NDUFS2 axis promotes pancreatic tumorigenesis through protecting against mitochondrial cell death. Cell Death Discov 2024; 10:190. [PMID: 38653740 DOI: 10.1038/s41420-024-01948-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/29/2024] [Accepted: 04/05/2024] [Indexed: 04/25/2024] Open
Abstract
Pancreatic cancer is one of the most fatal cancers in the world. A growing number of studies have begun to demonstrate that mitochondria play a key role in tumorigenesis. Our previous study reveals that NDUFS2 (NADH: ubiquinone oxidoreductase core subunit S2), a core subunit of the mitochondrial respiratory chain complex I, is upregulated in Pancreatic adenocarcinoma (PAAD). However, its role in the development of PAAD remains unknown. Here, we showed that NDUFS2 played a critical role in the survival, proliferation and migration of pancreatic cancer cells by inhibiting mitochondrial cell death. Additionally, protein mass spectrometry indicated that the NDUFS2 was interacted with a deubiquitinase, OTUB1. Overexpression of OTUB1 increased NDUFS2 expression at the protein level, while knockdown of OTUB1 restored the effects in vitro. Accordingly, overexpression and knockdown of OTUB1 phenocopied those of NDUFS2 in pancreatic cancer cells, respectively. Mechanically, NDUFS2 was deubiquitinated by OTUB1 via K48-linked polyubiquitin chains, resulted in an elevated protein stability of NDUFS2. Moreover, the growth of OTUB1-overexpressed pancreatic cancer xenograft tumor was promoted in vivo, while the OTUB1-silenced pancreatic cancer xenograft tumor was inhibited in vivo. In conclusion, we revealed that OTUB1 increased the stability of NDUFS2 in PAAD by deubiquitylation and this axis plays a pivotal role in pancreatic cancer tumorigenesis and development.
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Affiliation(s)
- Xiao-Dong Huang
- Department of General Surgery, Xuanwu Hospital Capital Medical University, Beijing, 100053, PR China
| | - Li Du
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Xiao-Chen Cheng
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Yu-Xin Lu
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Qiao-Wei Liu
- Department of Oncology, Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100039, PR China
| | - Yi-Wu Wang
- Department of Disease Control and Prevention, Chinese PLA The 96601 Military Hospital, Huangshan, 242700, Anhui, PR China
| | - Ya-Jin Liao
- Department of Neurology, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 42100, Hunan, PR China.
| | - Dong-Dong Lin
- Department of General Surgery, Xuanwu Hospital Capital Medical University, Beijing, 100053, PR China.
| | - Feng-Jun Xiao
- Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, Beijing, 100850, PR China.
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Yuan S, Ma Q, Hou C, Zhao Y, Liu KJ, Ji X, Qi Z. Association of serum occludin levels and perihematomal edema volumes in intracranial hemorrhage patients. CNS Neurosci Ther 2024; 30:e14450. [PMID: 37721332 PMCID: PMC10916427 DOI: 10.1111/cns.14450] [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: 05/22/2023] [Revised: 07/18/2023] [Accepted: 08/22/2023] [Indexed: 09/19/2023] Open
Abstract
BACKGROUND AND PURPOSE Perihematomal edema (PHE) is one of the severe secondary damages following intracranial hemorrhage (ICH). Studies showed that blood-brain barrier (BBB) injury contributes to the development of PHE. Previous studies showed that occludin protein is a potential biomarker of BBB injury. In the present study, we investigated whether the levels of serum occludin on admission are associated with PHE volumes in ICH patients. METHODS This cross-sectional study included 90ICH patients and 32 healthy controls.The volumes of hematoma and PHE were assessed using non-contrast cranial CT within 30 min of admission. Blood samples were drawn on admission, and the levels of baseline serum occludin were detected using enzyme-linked immunosorbent assay. Partial correlation analysis and multiple linear regression analysis were performed to evaluate the association between serum occludin levels and PHE volumes in ICH patients. RESULTS The serum occludin levels in ICH patients were much higher than health controls (median 0.27 vs. 0.13 ng/mL, p < 0.001). At admission, 34 ICH patients (37.78%) had experienced a severe PHE (≥30 mL), and their serum occludin levels were higher compared to those with mild PHE (<30 mL) (0.78 vs. 0.21 ng/mL, p < 0.001). The area under the receiver operating characteristics curve (ROC) of serum occludin level in predicting severe PHE was 0.747 (95% confidence interval CI 0.644-0.832, p < 0.001). There was a significant positive correlation between serum occludin levels and PHE volumes (partial correlation r = 0.675, p < 0.001). Multiple linear regression analysis showed that serum occludin levels remained independently associated with the PHE volumes after adjusting other confounding factors. CONCLUSION The present study showed that serum occludin levels at admission were independently correlated with PHE volumes in ICH patients, which may provide a biomarker indicating PHE volume change.
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Affiliation(s)
- Shuhua Yuan
- Cerebrovascular Diseases Research InstituteXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Qingfeng Ma
- Department of NeurologyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Chengbei Hou
- Center for Evidence‐Based Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Yue Zhao
- Clinical Lab, Xuanwu HospitalCapital Medical UniversityBeijingChina
| | - Ke Jian Liu
- Department of Pathology, Renaissance School of MedicineStony Brook UniversityStony BrookNew YorkUSA
| | - Xunming Ji
- Cerebrovascular Diseases Research InstituteXuanwu Hospital of Capital Medical UniversityBeijingChina
- Center of Stroke, Beijing Institute for Brain DisordersCapital Medical UniversityBeijingChina
| | - Zhifeng Qi
- Cerebrovascular Diseases Research InstituteXuanwu Hospital of Capital Medical UniversityBeijingChina
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Wang B, Zhu Y, Zhou S, Lu C, Zhang A, Tian J, Li W, Ren S, Dong Y, Liu L. The effect of carbon nanoparticles vs. immune colloidal gold technique test strips on parathyroid protection in total thyroidectomy: A randomized clinical trial study. Head Neck 2024. [PMID: 38429055 DOI: 10.1002/hed.27685] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/09/2024] [Accepted: 02/04/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND The long-term effect of intraoperative usage of carbon nanoparticles (CN) and parathyroid hormone (PTH) test strip using immune colloidal gold technique (ICGT) is unclear. This study aims to compare the effect of intraoperative usage of CN and ICGT test strips on PG function. METHODS This randomized clinical study involved adult patients who underwent total thyroidectomy. They were randomly allocated into three groups (control, CN, and ICGT group). Clinical data were analyzed. RESULTS Each group involved 98 patients. Serum calcium and PTH concentrations at 24 h postoperatively (PTH24h ) were higher in CN group. The parathyroid function recovered quicker in CN group. Use of CN increased in situ PG preservation and PTH24h . Mediation analysis indicated that 23.05% of the total effect of CN on PTH24h was attributed to PGRIS. CONCLUSION CN holds promise to improve in situ PG preservation and protect PG vasculature, thereby reducing the incidence of early hypoparathyroidism. The value of ICGT test strips for PG protection is dubious.
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Affiliation(s)
- Bochun Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yiyuan Zhu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Shiguo Zhou
- Statistics Room, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Cheng Lu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Aobo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jun Tian
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wanxin Li
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Shuling Ren
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yanbo Dong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Liangfa Liu
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Hao Y, Tang T, Gao C. Train Distance Estimation for Virtual Coupling Based on Monocular Vision. Sensors (Basel) 2024; 24:1179. [PMID: 38400336 PMCID: PMC10891710 DOI: 10.3390/s24041179] [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: 01/17/2024] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024]
Abstract
By precisely controlling the distance between two train sets, virtual coupling (VC) enables flexible coupling and decoupling in urban rail transit. However, relying on train-to-train communication for obtaining the train distance can pose a safety risk in case of communication malfunctions. In this paper, a distance-estimation framework based on monocular vision is proposed. First, key structure features of the target train are extracted by an object-detection neural network, whose strategies include an additional detection head in the feature pyramid, labeling of object neighbor areas, and semantic filtering, which are utilized to improve the detection performance for small objects. Then, an optimization process based on multiple key structure features is implemented to estimate the distance between the two train sets in VC. For the validation and evaluation of the proposed framework, experiments were implemented on Beijing Subway Line 11. The results show that for train sets with distances between 20 m and 100 m, the proposed framework can achieve a distance estimation with an absolute error that is lower than 1 m and a relative error that is lower than 1.5%, which can be a reliable backup for communication-based VC operations.
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Affiliation(s)
- Yang Hao
- School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
- Traffic Control Technology Co., Ltd., Beijing 100070, China;
| | - Tao Tang
- School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
| | - Chunhai Gao
- Traffic Control Technology Co., Ltd., Beijing 100070, China;
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Zhou W, Wang Z, Xu Q, Liu X, Li J, Yu H, Qiao H, Yang L, Chen L, Zhang Y, Huang Z, Pang Y, Zhang Z, Zhang J, Guan X, Ma S, Ren Y, Shi X, Yuan L, Li D, Huang D, Li Z, Jia W. Wireless facial biosensing system for monitoring facial palsy with flexible microneedle electrode arrays. NPJ Digit Med 2024; 7:13. [PMID: 38225423 PMCID: PMC10789865 DOI: 10.1038/s41746-024-01002-1] [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: 07/17/2023] [Accepted: 01/03/2024] [Indexed: 01/17/2024] Open
Abstract
Facial palsy (FP) profoundly influences interpersonal communication and emotional expression, necessitating precise diagnostic and monitoring tools for optimal care. However, current electromyography (EMG) systems are limited by their bulky nature, complex setups, and dependence on skilled technicians. Here we report an innovative biosensing approach that utilizes a PEDOT:PSS-modified flexible microneedle electrode array (P-FMNEA) to overcome the limitations of existing EMG devices. Supple system-level mechanics ensure excellent conformality to the facial curvilinear regions, enabling the detection of targeted muscular ensemble movements for facial paralysis assessment. Moreover, our apparatus adeptly captures each electrical impulse in response to real-time direct nerve stimulation during neurosurgical procedures. The wireless conveyance of EMG signals to medical facilities via a server augments access to patient follow-up evaluation data, fostering prompt treatment suggestions and enabling the access of multiple facial EMG datasets during typical 6-month follow-ups. Furthermore, the device's soft mechanics alleviate issues of spatial intricacy, diminish pain, and minimize soft tissue hematomas associated with traditional needle electrode positioning. This groundbreaking biosensing strategy has the potential to transform FP management by providing an efficient, user-friendly, and less invasive alternative to the prevailing EMG devices. This pioneering technology enables more informed decision-making in FP-management and therapeutic intervention.
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Affiliation(s)
- Wenjianlong Zhou
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Zhongyan Wang
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Qin Xu
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Xiangxiang Liu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, 100730, Beijing, China
| | - Junshi Li
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Huaiqiang Yu
- Sichuan Institute of Piezoelectric and Acousto-optic Technology, 400060, Chongqing, China
| | - Hui Qiao
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China
| | - Lirui Yang
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China
| | - Liangpeng Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Yuan Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Zhe Huang
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Yuxing Pang
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Zhitong Zhang
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Jiayan Zhang
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Xiudong Guan
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Shunchang Ma
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Yingjie Ren
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Xiaoyi Shi
- School of Integrated Circuits, Peking University, 100871, Beijing, China
| | - Linhao Yuan
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
| | - Deling Li
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China
- China National Clinical Research Center for Neurological Diseases (NCRC-ND), 100070, Beijing, China
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China
| | - Dong Huang
- School of Integrated Circuits, Peking University, 100871, Beijing, China.
| | - Zhihong Li
- School of Integrated Circuits, Peking University, 100871, Beijing, China.
- Beijing Advanced Innovation Center for Integrated Circuits, 100871, Beijing, China.
| | - Wang Jia
- Department of Neurosurgery, Beijing Tiantan Hospital, National Center for Neurological Disorders, Capital Medical University, 100070, Beijing, China.
- China National Clinical Research Center for Neurological Diseases (NCRC-ND), 100070, Beijing, China.
- Beijing Neurosurgical Institute, Capital Medical University, 100070, Beijing, China.
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Xu C, Ma H, Chen J, Li X, Wang Z, Hu B, Zhang N, Meng F. Prognostic, immunity, stemness, and anticancer drug sensitivity characterization of pyroptosis related genes in non-small cell lung cancer. Thorac Cancer 2024; 15:215-226. [PMID: 38115677 PMCID: PMC10803221 DOI: 10.1111/1759-7714.15180] [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: 07/23/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND Pyroptosis plays a pivotal role in the tumor immune microenvironment (TME) dynamics, particularly in non-small cell lung cancer (NSCLC). The aim of our study was to explore its effects on tumor progression, TME patterns, and the efficacy of therapeutic interventions in NSCLC. METHODS Our investigation encompassed a thorough analysis of pyroptosis-related genes (PRGs), integrating immunohistochemistry (IHC) data, TME characteristics, stemness indices, and anticancer drug sensitivities. We aimed to analyze mRNA expression profiles across various cancers, constructing benchmark datasets to assess the clinical significance of PRGs in NSCLC. This included evaluating their association with clinical responses and efficacy. Notably, both our and HPA IHC data demonstrated significantly elevated GSDMD-N protein levels in lung squamous cell carcinoma (LUSC) tissues. RESULTS The expression of PRGs differed significantly between tumor and normal tissues across various cancers, as validated by IHC data, and was correlated with prognosis (p < 0.05). Moreover, our investigation revealed significant differences (p < 0.05) in the expression of the PRGs among distinct TME subtypes categorized as C1 (wound healing), C3 (inflammatory), C2 (IFN-gamma dominant), C5 (immunological quiet), C4 (lymphocyte deficient), and C6 (TGF-beta dominant). Additionally, our research on anticancer drug sensitivity uncovered compelling connections between specific anticancer medications and the expression of PRGs, including GSDMD, ELANE, IL18, and CHMP4A (p < 0.05). CONCLUSION Our study provided valuable insights into the critical role of PRGs in TME modulation, tumor stemness, and anticancer drug sensitivity across diverse cancers. Our findings illuminate the intricate relationship between pyroptosis and the TME, offering new perspectives for enhancing NSCLC treatment and prognosis.
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Affiliation(s)
- Cong Xu
- Department of Thoracic SurgeryPeking University Shougang HospitalBeijingChina
| | - Hongming Ma
- Department of Respiratory and Critical CareEmergency General HospitalBeijingChina
| | | | - Xincheng Li
- Department of Thoracic SurgeryBeijing Institute of Respiratory Medicine and Beijing Chao‐Yang Hospital, Capital Medical UniversityBeijingChina
| | - Zhina Wang
- Department of Respiratory and Critical CareEmergency General HospitalBeijingChina
| | - Bin Hu
- Department of Thoracic SurgeryBeijing Institute of Respiratory Medicine and Beijing Chao‐Yang Hospital, Capital Medical UniversityBeijingChina
| | - Nan Zhang
- Department of Respiratory and Critical CareEmergency General HospitalBeijingChina
| | - Fanjie Meng
- Department of Thoracic SurgeryBeijing Institute of Respiratory Medicine and Beijing Chao‐Yang Hospital, Capital Medical UniversityBeijingChina
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Li G, Zhong D, Li B, Chen Y, Yang L, Li CSR. Sleep Deficits Inter-Link Lower Basal Forebrain-Posterior Cingulate Connectivity and Perceived Stress and Anxiety Bidirectionally in Young Men. Int J Neuropsychopharmacol 2023; 26:879-889. [PMID: 37924270 PMCID: PMC10726414 DOI: 10.1093/ijnp/pyad062] [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: 07/13/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND The basal nucleus of Meynert (BNM), a primary source of cholinergic projections to the cortex, plays key roles in regulating the sleep-wake cycle and attention. Sleep deficit is associated with impairment in cognitive and emotional functions. However, whether or how cholinergic circuit, sleep, and cognitive/emotional dysfunction are inter-related remains unclear. METHODS We curated the Human Connectome Project data and explored BNM resting state functional connectivities (rsFC) in relation to sleep deficit, based on the Pittsburgh Sleep Quality Index (PSQI), cognitive performance, and subjective reports of emotional states in 687 young adults (342 women). Imaging data were processed with published routines and evaluated at a corrected threshold. We assessed the correlation between BNM rsFC, PSQI, and clinical measurements with Pearson regressions and their inter-relationships with mediation analyses. RESULTS In whole-brain regressions with age and alcohol use severity as covariates, men showed lower BNM rsFC with the posterior cingulate cortex (PCC) in correlation with PSQI score. No clusters were identified in women at the same threshold. Both BNM-PCC rsFC and PSQI score were significantly correlated with anxiety, perceived stress, and neuroticism scores in men. Moreover, mediation analyses showed that PSQI score mediated the relationship between BNM-PCC rsFC and these measures of negative emotions bidirectionally in men. CONCLUSIONS Sleep deficit is associated with negative emotions and lower BNM rsFC with the PCC. Negative emotional states and BNM-PCC rsFC are bidirectionally related through poor sleep quality. These findings are specific to men, suggesting potential sex differences in the neural circuits regulating sleep and emotional states.
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Affiliation(s)
- Guangfei Li
- Department of Biomedical engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing International Science and Technology Cooperation Base for Intelligent Physiological Measurement and Clinical Transformation, Beijing, China
| | - Dandan Zhong
- Department of Biomedical engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
| | - Bao Li
- Department of Biomedical engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing International Science and Technology Cooperation Base for Intelligent Physiological Measurement and Clinical Transformation, Beijing, China
| | - Yu Chen
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Lin Yang
- Department of Biomedical engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing International Science and Technology Cooperation Base for Intelligent Physiological Measurement and Clinical Transformation, Beijing, China
| | - Chiang-Shan R Li
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Neuroscience, Yale University School of Medicine, New Haven, Connecticut, USA
- Interdepartmental Neuroscience Program, Yale University School of Medicine, New Haven, Connecticut, USA
- Wu Tsai Institute, Yale University, New Haven, Connecticut, USA
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Zhang D, Jia D, Ren L, Li J, Lu Y, Xu H. Multisensor and Multiscale Data Integration Method of TLS and GPR for Three-Dimensional Detailed Virtual Reconstruction. Sensors (Basel) 2023; 23:9826. [PMID: 38139672 PMCID: PMC10747772 DOI: 10.3390/s23249826] [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: 10/16/2023] [Revised: 11/30/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Integrated TLS and GPR data can provide multisensor and multiscale spatial data for the comprehensive identification and analysis of surficial and subsurface information, but a reliable systematic methodology associated with data integration of TLS and GPR is still scarce. The aim of this research is to develop a methodology for the data integration of TLS and GPR for detailed, three-dimensional (3D) virtual reconstruction. GPR data and high-precision geographical coordinates at the centimeter level were simultaneously gathered using the GPR system and the Global Navigation Satellite System (GNSS) signal receiver. A time synchronization algorithm was proposed to combine each trace of the GPR data with its position information. In view of the improved propagation model of electromagnetic waves, the GPR data were transformed into dense point clouds in the geodetic coordinate system. Finally, the TLS-based and GPR-derived point clouds were merged into a single point cloud dataset using coordinate transformation. In addition, TLS and GPR (250 MHz and 500 MHz antenna) surveys were conducted in the Litang fault to assess the feasibility and overall accuracy of the proposed methodology. The 3D realistic surface and subsurface geometry of the fault scarp were displayed using the integration data of TLS and GPR. A total of 40 common points between the TLS-based and GPR-derived point clouds were implemented to assess the data fusion accuracy. The difference values in the x and y directions were relatively stable within 2 cm, while the difference values in the z direction had an abrupt fluctuation and the maximum values could be up to 5 cm. The standard deviations (STD) of the common points between the TLS-based and GPR-derived point clouds were 0.9 cm, 0.8 cm, and 2.9 cm. Based on the difference values and the STD in the x, y, and z directions, the field experimental results demonstrate that the GPR-derived point clouds exhibit good consistency with the TLS-based point clouds. Furthermore, this study offers a good future prospect for the integration method of TLS and GPR for comprehensive interpretation and analysis of the surficial and subsurface information in many fields, such as archaeology, urban infrastructure detection, geological investigation, and other fields.
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Affiliation(s)
- Di Zhang
- College of Civil Engineering, Henan University of Engineering, Zhengzhou 451159, China; (D.J.); (Y.L.); (H.X.)
- College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China;
| | - Dinghan Jia
- College of Civil Engineering, Henan University of Engineering, Zhengzhou 451159, China; (D.J.); (Y.L.); (H.X.)
| | - Lili Ren
- Henan Shijiguoke Aerospace Technology Co., Ltd., Zhengzhou 450008, China;
| | - Jiacun Li
- College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China;
| | - Yan Lu
- College of Civil Engineering, Henan University of Engineering, Zhengzhou 451159, China; (D.J.); (Y.L.); (H.X.)
| | - Haiwei Xu
- College of Civil Engineering, Henan University of Engineering, Zhengzhou 451159, China; (D.J.); (Y.L.); (H.X.)
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Sun S, Sun D, Xu T. The Developmental Progression of Early Algebraic Thinking of Elementary School Students. J Intell 2023; 11:222. [PMID: 38132840 PMCID: PMC10744471 DOI: 10.3390/jintelligence11120222] [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: 09/28/2023] [Revised: 11/11/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Developing algebraic thinking in elementary school has gained consensus among mathematics educators. The objective of this study is to understand the developmental trajectory of early algebraic thinking in elementary school students so as to assist teachers and curriculum developers in implementing instruction that aligns with students' cognitive development. This study adopted a cross-sectional survey approach, involving 526 students from grades three to five in Shanghai, who were tested using a 12-item assessment that measured three aspects: "generalized arithmetic", "functional thinking", and "quantitative reasoning". Latent class analysis was used to analyze students' response strategies, and, in conjunction with individual interviews, this study identified potential developmental pathways in students' early algebraic thinking, progressing from "arithmetic thinking" to "concrete algebraic thinking", "generalized algebraic thinking", and finally to "symbolic algebraic thinking". As thinking levels advanced, significant differences in students' response strategies emerged, with notable improvements in "generalization abilities" and "symbolization abilities". This study suggests that educational practices should encompass content in elementary arithmetic curricula that fosters generalization abilities. Additionally, providing students with opportunities for diverse representations can effectively stimulate the development of early algebraic thinking.
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Affiliation(s)
- Siyu Sun
- College of Education, Capital Normal University, Beijing 100048, China
| | - Dandan Sun
- School of Mathematics and Statistics, Shandong Normal University, Jinan 250358, China;
| | - Tianshu Xu
- School of Educational Science, Nantong University, Nantong 226019, China;
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Wang T, Tian G. Linking Distributed Leadership with Differentiated Instruction in Inclusive Schools: The Mediating Roles of Teacher Leadership and Professional Competence. Behav Sci (Basel) 2023; 13:990. [PMID: 38131846 PMCID: PMC10740903 DOI: 10.3390/bs13120990] [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: 09/24/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023] Open
Abstract
Despite the clear worldwide school inclusion initiative, translating the widely embraced notions of inclusive education into differentiated teaching practice has been recognized as a common difficulty. Based on replies from 780 educators in inclusive schools in Beijing, China, this study explored how distributed leadership contributes to teachers' use of differentiated teaching, the mediation role of teacher leadership for inclusion, and teachers' professional competencies of inclusive education. The results suggest that principals' distributed leadership directly influences teachers' employment of differentiated instruction. Teacher leadership for inclusion and professional competencies of inclusive education play a serial mediating role in the relationship between distributed principalship and teachers' use of differentiated instruction. Implications for implementing inclusive practices were further discussed.
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Affiliation(s)
| | - Guoxiu Tian
- College of Teacher Education, Capital Normal University, Beijing 100048, China;
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11
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Qu S, Zhou X, Wang Z, Wei Y, Zhou H, Zhang X, Zhu Q, Wang Y, Yang Q, Jiang L, Ma Y, Gao Y, Kong L, Zhang L. The effects of methylphenidate and atomoxetine on Drosophila brain at single-cell resolution and potential drug repurposing for ADHD treatment. Mol Psychiatry 2023:10.1038/s41380-023-02314-6. [PMID: 37957291 DOI: 10.1038/s41380-023-02314-6] [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: 05/23/2023] [Revised: 10/24/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
The stimulant methylphenidate (MPH) and the non-stimulant atomoxetine (ATX) are frequently used for the treatment of attention-deficit/hyperactivity disorder (ADHD); however, the function of these drugs in different types of brain cells and their effects on related genes remain largely unknown. To address these questions, we built a pipeline for the simultaneous examination of the activity behavior and transcriptional responses of Drosophila melanogaster at single-cell resolution following drug treatment. We selected the Drosophila with significantly increased locomotor activities (hyperactivity-like behavior) following the administration of each drug in comparison with the control (same food as the drug-treated groups with 5% sucrose, yeast, and blue food dye solution) using EasyFlyTracker. Subsequently, single cell RNA sequencing (scRNASEQ) was used to capture the transcriptome of 82,917 cells, unsupervised clustering analysis of which yielded 28 primary cell clusters representing the major cell types in adult Drosophila brain. Indeed, both neuronal and glial cells responded to MPH and ATX. Further analysis of differentially expressed genes (DEGs) revealed distinct transcriptional changes associated with these two drugs, such as two well-studied dopamine receptor genes (Dop2R and DopEcR) were responsive to MPH but not to ATX at their optimal doses, in addition to genes involved in dopamine metabolism pathways such as Syt1, Sytalpha, Syt7, and Ih in different cell types. More importantly, MPH also suppressed the expression of genes encoding other neurotransmitter receptors and synaptic signaling molecules in many cell types, especially those for Glu and GABA, while the responsive effects of ATX were much weaker. In addition to monoaminergic neuronal transmitters, other neurotransmitters have also shown a similar pattern with respect to a stronger effect associated with MPH than with ATX. Moreover, we identified four distinct glial cell subtypes responsive to the two drugs and detected a greater number of differentially expressed genes associated with ensheathing and astrocyte-like glia. Furthermore, our study provides a rich resource of candidate target genes, supported by drug set enrichment analysis (P = 2.10E-4; hypergeometric test), for the further exploration of drug repurposing. The whole list of candidates can be found at ADHDrug ( http://adhdrug.cibr.ac.cn/ ). In conclusion, we propose a fast and cost-efficient pipeline to explore the underlying molecular mechanisms of ADHD drug treatment in Drosophila brain at single-cell resolution, which may further facilitate drug repurposing applications.
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Affiliation(s)
- Susu Qu
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China.
- Chinese Institute for Brain Research, Beijing, China.
| | - Xiangyu Zhou
- Chinese Institute for Brain Research, Beijing, China
| | - Zhicheng Wang
- Chinese Institute for Brain Research, Beijing, China
| | - Yi Wei
- Chinese Institute for Brain Research, Beijing, China
| | - Han Zhou
- Chinese Institute for Brain Research, Beijing, China
| | | | - Qingjie Zhu
- Chinese Institute for Brain Research, Beijing, China
| | - Yanmin Wang
- Chinese Institute for Brain Research, Beijing, China
| | - Quanjun Yang
- Department of Pharmacy, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Likun Jiang
- Department of Computer Science, Xiamen University, Xiamen, China
| | - Yuan Ma
- Chinese Institute for Brain Research, Beijing, China
| | - Yuan Gao
- Chinese Institute for Brain Research, Beijing, China
| | - Lei Kong
- Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing, China
| | - Li Zhang
- Chinese Institute for Brain Research, Beijing, China.
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12
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Dang W, Cao N, Zhang Y, Li W, Li H. Association among β2-adrenergic receptor autoantibodies and proximal left anterior descending artery lesions in patients with initial ST-segment elevation myocardial infarction. Clin Cardiol 2023; 46:1371-1379. [PMID: 37587904 PMCID: PMC10642316 DOI: 10.1002/clc.24129] [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: 01/30/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 08/18/2023] Open
Abstract
BACKGROUND β2 -adrenergic receptor autoantibody (β2 -AA) are widely present in patients with many different types of cardiovascular diseases. Proximal left anterior descending (LAD) artery lesions are associated with adverse prognostic events in patients with ST-segment elevation myocardial infarction (STEMI). HYPOTHESIS β2 -AA is associated with the presence of proximal LAD lesions in patients with STEMI. METHODS A cohort of 153 patients with STEMI who underwent primary percutaneous coronary intervention (PPCI) was enrolled in the study. Baseline characteristics were compared between the proximal LAD group (n = 62) and the nonproximal LAD group (n = 91). Admission serum of patients was collected to detect the level of β2 -AA. Data for echocardiogram within 24 hours after PPCI and at the 6-month follow-up were recorded. RESULTS The optical density values and positive rates of β2 -AA in the proximal LAD group were higher than those in the nonproximal LAD group (p < 0.05). β2 -AA positively correlated with high sensitivity C-reactive protein and peak N-terminal pro-B type natriuretic peptide levels in the proximal LAD group, but those were not relevant in the nonproximal LAD group. Multivariate logistic regression analysis revealed that high β2 -AA levels was independently associated with the presence of proximal LAD lesions in patients with STEMI. Furthermore, a receiver operating characteristic curve was used to show the efficiency of β2 -AA levels to detect proximal LAD lesions, and the AUC of the β2-AA OD value was 0.658 (95% confidence interval 0.568-0.749; p = 0.001). CONCLUSIONS The STEMI patients with high β2 -AA levels had a greater possibility having proximal LAD lesions.
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Affiliation(s)
- Wenxi Dang
- Department of Cardiology, Cardiovascular Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular DiseaseBeijingChina
| | - Ning Cao
- Department of Cardiology, Cardiovascular Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular DiseaseBeijingChina
- Laboratory of Clinical MedicineCapital Medical UniversityBeijingChina
| | - Yue Zhang
- Department of Cardiology, Cardiovascular Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Weiping Li
- Department of Cardiology, Cardiovascular Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular DiseaseBeijingChina
- Laboratory of Clinical MedicineCapital Medical UniversityBeijingChina
| | - Hongwei Li
- Department of Cardiology, Cardiovascular Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular DiseaseBeijingChina
- Laboratory of Clinical MedicineCapital Medical UniversityBeijingChina
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13
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Hao Y, Tang T, Gao C. Train Distance Estimation in Turnout Area Based on Monocular Vision. Sensors (Basel) 2023; 23:8778. [PMID: 37960476 PMCID: PMC10650734 DOI: 10.3390/s23218778] [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: 09/11/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023]
Abstract
Train distance estimation in a turnout area is an important task for the autonomous driving of urban railway transit, since this function can assist trains in sensing the positions of other trains within the turnout area and prevent potential collision accidents. However, because of large incident angles on object surfaces and far distances, Lidar or stereo vision cannot provide satisfactory precision for such scenarios. In this paper, we propose a method for train distance estimation in a turnout area based on monocular vision: firstly, the side windows of trains in turnout areas are detected by instance segmentation based on YOLOv8; secondly, the vertical directions, the upper edges and lower edges of side windows of the train are extracted by feature extraction; finally, the distance to the target train is calculated with an appropriated pinhole camera model. The proposed method is validated by practical data captured from Hong Kong Metro Tsuen Wan Line. A dataset of 2477 images is built to train the instance segmentation neural network, and the network is able to attain an MIoU of 92.43% and a MPA of 97.47% for segmentation. The accuracy of train distance estimation is then evaluated in four typical turnout area scenarios with ground truth data from on-board Lidar. The experiment results indicate that the proposed method achieves a mean RMSE of 0.9523 m for train distance estimation in four typical turnout area scenarios, which is sufficient for determining the occupancy of crossover in turnout areas.
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Affiliation(s)
- Yang Hao
- School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
- Traffic Control Technology Co., Ltd., Beijing 100070, China;
| | - Tao Tang
- School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China;
| | - Chunhai Gao
- Traffic Control Technology Co., Ltd., Beijing 100070, China;
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14
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Zhao Y, Yu S, Zhao H, Li L, Li Y, Liu M, Jiang L. Integrated multi-omics analysis reveals the positive leverage of citrus flavonoids on hindgut microbiota and host homeostasis by modulating sphingolipid metabolism in mid-lactation dairy cows consuming a high-starch diet. Microbiome 2023; 11:236. [PMID: 37880759 PMCID: PMC10598921 DOI: 10.1186/s40168-023-01661-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 09/03/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND Modern dairy diets have shifted from being forage-based to grain and energy dense. However, feeding high-starch diets can lead to a metabolic disturbance that is linked to dysregulation of the gastrointestinal microbiome and systemic inflammatory response. Plant flavonoids have recently attracted extensive interest due to their anti-inflammatory effects in humans and ruminants. Here, multi-omics analysis was conducted to characterize the biological function and mechanisms of citrus flavonoids in modulating the hindgut microbiome of dairy cows fed a high-starch diet. RESULTS Citrus flavonoid extract (CFE) significantly lowered serum concentrations of lipopolysaccharide (LPS) proinflammatory cytokines (TNF-α and IL-6), acute phase proteins (LPS-binding protein and haptoglobin) in dairy cows fed a high-starch diet. Dietary CFE supplementation increased fecal butyrate production and decreased fecal LPS. In addition, dietary CFE influenced the overall hindgut microbiota's structure and composition. Notably, potentially beneficial bacteria, including Bacteroides, Bifidobacterium, Alistipes, and Akkermansia, were enriched in CFE and were found to be positively correlated with fecal metabolites and host metabolites. Fecal and serum untargeted metabolomics indicated that CFE supplementation mainly emphasized the metabolic feature "sphingolipid metabolism." Metabolites associated with the sphingolipid metabolism pathway were positively associated with increased microorganisms in dairy cows fed CFE, particularly Bacteroides. Serum lipidomics analysis showed that the total contents of ceramide and sphingomyelin were decreased by CFE addition. Some differentially abundant sphingolipid species were markedly associated with serum IL-6, TNF-α, LPS, and fecal Bacteroides. Metaproteomics revealed that dietary supplementation with CFE strongly impacted the overall fecal bacterial protein profile and function. In CFE cows, enzymes involved in carbon metabolism, sphingolipid metabolism, and valine, leucine, and isoleucine biosynthesis were upregulated. CONCLUSIONS Our research indicates the importance of bacterial sphingolipids in maintaining hindgut symbiosis and homeostasis. Dietary supplementation with CFE can decrease systemic inflammation by maintaining hindgut microbiota homeostasis and regulating sphingolipid metabolism in dairy cows fed a high-starch diet. Video Abstract.
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Affiliation(s)
- Yuchao Zhao
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Shiqiang Yu
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Huiying Zhao
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Liuxue Li
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Yuqin Li
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Ming Liu
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China
| | - Linshu Jiang
- Beijing Key Laboratory of Dairy Cow Nutrition, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206, China.
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15
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Chen Q, Lv H, Wang Z, Li X, Wang X, Huang Y, Zhao P, Yang Z, Gong S, Wang Z. Role of insula and its subregions in progression from recent onset to chronic idiopathic tinnitus. Brain Commun 2023; 5:fcad261. [PMID: 37869577 PMCID: PMC10586310 DOI: 10.1093/braincomms/fcad261] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 08/08/2023] [Accepted: 10/06/2023] [Indexed: 10/24/2023] Open
Abstract
We determined the structural and functional alterations in the insula and its subregions in patients with idiopathic tinnitus in order to identify the neural changes involved in the progression from recent onset to chronic tinnitus. We recruited 24 recent-onset tinnitus patients, 32 chronic tinnitus patients and 36 healthy controls. We measured the grey matter volume and fractional amplitude of low-frequency fluctuation of the insula and its subregions and the functional connectivity within the insula and between the insula and the rest of the brain. Relationships between MRI and clinical characteristics were estimated using partial correlation analysis. Both recent-onset and chronic tinnitus patients showed decreased fractional amplitude of low-frequency fluctuation in the insula and its subregions, but only chronic tinnitus patients showed bilateral grey matter atrophy in the ventral anterior insula. Abnormal functional connectivity was detected in recent-onset and chronic tinnitus patients relative to the healthy controls, but functional connectivity differences between recent-onset and chronic tinnitus patients were found in only the auditory-related cortex, frontal cortex and limbic system. Functional alterations (fractional amplitude of low-frequency fluctuation and functional connectivity of the left ventral anterior insula), but not structural changes, were correlated with clinical severity. Bilateral grey matter atrophy in the ventral anterior insula decreased regional activities in the left ventral anterior insula and left posterior insula, and abnormal functional connectivity of the insula subregions with auditory and non-auditory areas were implicated in the progression from recent onset to chronic tinnitus. This suggests that tinnitus generation and development occur in a dynamic manner and involve aberrant multi-structural and functional (regional brain activity and abnormal functional connectivity) reorganization of the insula.
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Affiliation(s)
- Qian Chen
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Han Lv
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhaodi Wang
- Department of Otolaryngology, Beijing Jingmei Group General Hospital, Beijing 102300, China
| | - Xiaoshuai Li
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Xinghao Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | | | - Pengfei Zhao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhenghan Yang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Shusheng Gong
- Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhenchang Wang
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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16
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Wang M, Cao N, Zhou L, Su W, Chen H, Li H. Association of N-terminal pro-B-type natriuretic peptide levels and mortality risk in acute myocardial infarction across body mass index categories: an observational cohort study. Diabetol Metab Syndr 2023; 15:192. [PMID: 37798776 PMCID: PMC10557200 DOI: 10.1186/s13098-023-01163-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/09/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND The prognostic value of N-terminal pro-B-type natriuretic peptide (NT-proBNP) across body mass index (BMI) categories in patients with acute myocardial infarction (AMI) is unclear. We aimed to assess the predictive value of NT-proBNP levels and identify the best cutoff values for mortality risk prediction across BMI categories in AMI. METHODS We analyzed 4677 patients with AMI from the Cardiovascular Centre Beijing Friendship Hospital Database Bank. Patients were classified into underweight (< 18.5 kg/m2), normal-weight (18.5-23.9 kg/m2), overweight (24-27.9 kg/m2), and obese (≥ 28 kg/m2) groups. The association between NT-proBNP (ln-transformed) and mortality was investigated using Cox regression and stratified by BMI. RESULTS During follow-up (13,787 person-years of observation), 718 patients died, averaging 52.1 events per 1000 person-years. NT-proBNP levels were inversely correlated with BMI (β = - 0.096, P < 0.001). After adjustment, NT-proBNP was independently associated with all-cause mortality (hazard ratio [HR] per 1-SD: 1.82; 95% confidence interval [CI] 1.60-2.07) in patients with AMI. Similar findings were observed in analyses stratified by BMI category, except for the underweight group. Adding NT-proBNP to conventional risk models improved risk discrimination in normal-weight, overweight, and obese patients (C-index changes of 0.036, 0.042, and 0.032, respectively) and classification of patients into predicted mortality risk categories (net reclassification improvement 0.263, 0.204, and 0.197, respectively). The best NT-proBNP cutoff values for 5-year mortality risk prediction across BMI categories were 5710, 4492, 2253, and 1300 pg/ml. CONCLUSION NT-proBNP level was an independent prognostic factor for mortality in patients with AMI and varied according to BMI. The best NT-proBNP cutoff values for mortality risk prediction reduced as BMI increased.
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Affiliation(s)
- Man Wang
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China
| | - Ning Cao
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Beijing, China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing, China
| | - Li Zhou
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China
| | - Wen Su
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China
| | - Hui Chen
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China.
| | - Hongwei Li
- Department of Cardiology, Cardiovascular Centre, Beijing Friendship Hospital, Capital Medical University, No.95, Yongan Road, Xicheng District, Beijing, 100050, People's Republic of China.
- Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Beijing, China.
- Laboratory for Clinical Medicine, Capital Medical University, Beijing, China.
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Cheng Y, Lin D, Wu S, Liu Q, Yan X, Ren T, Zhang J, Wang N. Cerebrospinal Fluid Pressure Reduction Induces Glia-Mediated Retinal Inflammation and Leads to Retinal Ganglion Cell Injury in Rats. Mol Neurobiol 2023; 60:5770-5788. [PMID: 37347366 DOI: 10.1007/s12035-023-03430-8] [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: 02/01/2023] [Accepted: 06/05/2023] [Indexed: 06/23/2023]
Abstract
Low intracranial pressure (LICP)-induced translaminar cribrosa pressure difference (TLCPD) elevation has been proven as a risk factor in glaucomatous neurodegeneration, whereas the underlying retinal immune features of LICP-induced retinal ganglion cells (RGC) injury remain elusive. Here, we identified the retinal immune characteristics of LICP rats, and minocycline (Mino) treatment was utilized to analyze its inhibitory role in glia-mediated retinal inflammation of LICP rats. The results showed that retrograde axonal transport was decreased in LICP rats without significant RGC loss, indicating the RGC injury was at an early stage before the morphological loss. The activation of retinal microglia and astrocytes with morphologic and M1 or A1-marker alternations was detected in TLCPD elevation rats, the activation level is more dramatic in HIOP rats than in the LICP rats (P<0.05). Besides, we detected reduced retinal tight junction protein expressions, accompanied by specific imbalance patterns of T lymphocytes in the retina of both LICP and HIOP rats (P<0.05). Further Mino treatment showed an effective inhibitory role in glia-driven inflammatory responses in LICP rats, including improving retrograde axonal transport, inhibiting retinal glial activation and proinflammatory subtype polarization, and alleviating the blood-retina barrier compromise. This study identified the glia-mediated retinal inflammation features triggered by LICP stimulus, and Mino application exhibited an effective role in the inhibition of retinal glia-mediated inflammation in LICP-induced TLCPD elevation rats.
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Affiliation(s)
- Ying Cheng
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
| | - Danting Lin
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Shen Wu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Qian Liu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Xuejing Yan
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Tianmin Ren
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
| | - Jingxue Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China.
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, 100069, China.
- Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, 100069, China.
| | - Ningli Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China.
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, 100069, China.
- Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, 100069, China.
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18
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Pang K, Yang Y, Tian D, Zeng N, Cao S, Ling S, Gao J, Zhao P, Wang H, Kong Y, Zhang J, Chen G, Deng W, Bai Z, Jin L, Wu G, Zhu D, Wang Y, Zhou J, Wu B, Lin G, Xiao Y, Gao Z, Ye Y, Wang X, Li A, Han J, Yao H, Yang Y, Zhang Z. Long-course chemoradiation plus concurrent/sequential PD-1 blockade as neoadjuvant treatment for MMR-status-unscreened locally advanced rectal cancer: protocol of a multicentre, phase 2, randomised controlled trial (the POLAR-STAR trial). BMJ Open 2023; 13:e069499. [PMID: 37699634 PMCID: PMC10503326 DOI: 10.1136/bmjopen-2022-069499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 07/26/2023] [Indexed: 09/14/2023] Open
Abstract
INTRODUCTION Recent preclinical studies have discovered unique synergism between radiotherapy and immune checkpoint inhibitors, which has already brought significant survival benefit in lung cancer. In locally advanced rectal cancer (LARC), neoadjuvant radiotherapy plus immune checkpoint inhibitors have also achieved surprisingly high pathological complete response (pCR) rates even in proficient mismatch-repair patients. As existing researches are all phase 2, single-cohort trials, we aim to conduct a randomised, controlled trial to further clarify the efficacy and safety of this novel combination therapy. METHODS AND ANALYSIS Eligible patients with LARC are randomised to three arms (two experiment arms, one control arm). Patients in all arms receive long-course radiotherapy plus concurrent capecitabine as neoadjuvant therapy, as well as radical surgery. Distinguishingly, patients in arm 1 also receive anti-PD-1 (Programmed Death 1) treatment starting at Day 8 of radiation (concurrent plan), and patients in arm 2 receive anti-PD-1 treatment starting 2 weeks after completion of radiation (sequential plan). Tislelizumab (anti-PD-1) is scheduled to be administered at 200 mg each time for three consecutive times, with 3-week intervals. Randomisation is stratified by different participating centres, with a block size of 6. The primary endpoint is pCR rate, and secondary endpoints include neoadjuvant-treatment-related adverse event rate, as well as disease-free and overall survival rates at 2, 3 and 5 years postoperation. Data will be analysed with an intention-to-treat approach. ETHICS AND DISSEMINATION This protocol has been approved by the institutional ethical committee of Beijing Friendship Hospital (the primary centre) with an identifying serial number of 2022-P2-050-01. Before publication to peer-reviewed journals, data of this research will be stored in a specially developed clinical trial database. TRIAL REGISTRATION NUMBER NCT05245474.
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Affiliation(s)
- Kai Pang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yun Yang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Dan Tian
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Na Zeng
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, Beijing, China
| | - Shun Cao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Shen Ling
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Jiale Gao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Pengfei Zhao
- Radiotherapy and Radiation Oncology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Hao Wang
- Statistics and Methodology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yuanyuan Kong
- Statistics and Methodology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Jie Zhang
- Radiology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Guangyong Chen
- Clinical Pathology, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Wei Deng
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Zhigang Bai
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Lan Jin
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Guoju Wu
- Gastrointestinal Surgery, Beijing Hospital, Beijing, Beijing, China
| | - Danyang Zhu
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Yue Wang
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Jiaolin Zhou
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Bin Wu
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Guole Lin
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Yi Xiao
- General Surgery, Peking Union Medical College Hospital, Beijing, Beijing, China
| | - Zhidong Gao
- Gastrointestinal Surgery, Peking University People's Hospital, Beijing, Beijing, China
| | - Yingjiang Ye
- Gastrointestinal Surgery, Peking University People's Hospital, Beijing, Beijing, China
| | - Xin Wang
- General Surgery, Peking University First Hospital, Beijing, Beijing, China
| | - Ang Li
- General Surgery, Xuanwu Hospital Capital Medical University, Beijing, Beijing, China
| | - Jiagang Han
- General Surgery, Beijing Chao-Yang Hospital Capital Medical University, Beijing, Beijing, China
| | - Hongwei Yao
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Yingchi Yang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
| | - Zhongtao Zhang
- General Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, Beijing, China
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19
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Quan M, Cao S, Wang Q, Wang S, Jia J. Genetic Phenotypes of Alzheimer's Disease: Mechanisms and Potential Therapy. Phenomics 2023; 3:333-349. [PMID: 37589021 PMCID: PMC10425323 DOI: 10.1007/s43657-023-00098-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/28/2023] [Accepted: 02/02/2023] [Indexed: 08/18/2023]
Abstract
Years of intensive research has brought us extensive knowledge on the genetic and molecular factors involved in Alzheimer's disease (AD). In addition to the mutations in the three main causative genes of familial AD (FAD) including presenilins and amyloid precursor protein genes, studies have identified several genes as the most plausible genes for the onset and progression of FAD, such as triggering receptor expressed on myeloid cells 2, sortilin-related receptor 1, and adenosine triphosphate-binding cassette transporter subfamily A member 7. The apolipoprotein E ε4 allele is reported to be the strongest genetic risk factor for sporadic AD (SAD), and it also plays an important role in FAD. Here, we reviewed recent developments in genetic and molecular studies that contributed to the understanding of the genetic phenotypes of FAD and compared them with SAD. We further reviewed the advancements in AD gene therapy and discussed the future perspectives based on the genetic phenotypes.
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Affiliation(s)
- Meina Quan
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053 China
- National Medical Center for Neurological Disorders and National Clinical Research Center for Geriatric Diseases, Beijing, 100053 China
| | - Shuman Cao
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053 China
| | - Qi Wang
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053 China
- National Medical Center for Neurological Disorders and National Clinical Research Center for Geriatric Diseases, Beijing, 100053 China
| | - Shiyuan Wang
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053 China
| | - Jianping Jia
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053 China
- National Medical Center for Neurological Disorders and National Clinical Research Center for Geriatric Diseases, Beijing, 100053 China
- Beijing Key Laboratory of Geriatric Cognitive Disorders, Beijing, 100053 China
- Clinical Center for Neurodegenerative Disease and Memory Impairment, Capital Medical University, Beijing, 100053 China
- Center of Alzheimer’s Disease, Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100053 China
- Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, 100053 China
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20
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Wang X, Yin F, Wan Z. A Joint Acoustic Emission Source Localization Method for Composite Materials. Sensors (Basel) 2023; 23:5473. [PMID: 37420639 DOI: 10.3390/s23125473] [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: 05/15/2023] [Revised: 06/01/2023] [Accepted: 06/08/2023] [Indexed: 07/09/2023]
Abstract
Damage localization methods for composite materials are a popular research topic at present. The time-difference-blind localization method and beamforming localization method are often individually utilized in the localization of the acoustic emission sources of composite materials. Based on the performances of the two methods, a joint localization method for the acoustic emission sources of composite materials is proposed in this paper. Firstly, the performance of the time-difference-blind localization method and the beamforming localization method were analyzed. Then, with the advantages and disadvantages of these two methods in mind, a joint localization method was proposed. Finally, the performance of the joint localization method was verified using simulations and experiments. The results show that the joint localization method can reduce the localization time by half compared with the beamforming localization method. At the same time, compared with the time-difference-blind localization method, the localization accuracy can be improved.
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Affiliation(s)
- Xiaoran Wang
- Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China
| | - Fang Yin
- Beijing Institute of Control Engineering, Beijing 100076, China
| | - Zhishuai Wan
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
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21
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Chen Z, Kong Y, Zhang J, Chu M, Liu L, Xie K, Cui Y, Ye H, Li J, Wang L, Wu L. Toward an early clinical diagnosis of MM2-type sporadic Creutzfeldt-Jakob disease. Ann Clin Transl Neurol 2023. [PMID: 37278248 PMCID: PMC10351658 DOI: 10.1002/acn3.51802] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/07/2023] Open
Abstract
OBJECTIVE To assess the proportion of clinically diagnosed MM2-type sporadic Creutzfeldt-Jakob disease (sCJD) in a Chinese cohort, describe the clinical features of MM2-cortical (MM2C) and MM2-thalamic (MM2T) type sCJD to improve the early detection of MM2-type sCJD. METHODS A total of 209 patients with sCJD admitted to the Xuanwu Hospital between February 2012 and August 2022 were reviewed. The patients were classified into probable MM2C, MM2T-type sCJD, and other types of sCJD according to current clinical diagnostic criteria. Clinical and ancillary data were compared between the groups. RESULTS Fifty-one (24.4%) patients were clinically diagnosed with MM2-type sCJD, of which 44 were diagnosed with MM2C-type sCJD and 7 with MM2T-type sCJD. In the absence of RT-QuIC, 27 (61.3%) patients of MM2C-type sCJD did not meet the US CDC sCJD criteria for possible sCJD on admission, even though the mean period from onset to admission was 6.0 months. However, all of these patients had cortical hyperintensity on DWI. Compared to the other types of sCJD, MM2C-type sCJD was associated with slower disease progression and the absence of the typical clinical features of sCJD; the MM2T-type sCJD group had a higher proportion of males, earlier age of onset, longer duration of disease, and a higher incidence of bilateral thalamic hypometabolism/hypoperfusion. INTERPRETATION In the absence of multiple typical sCJD symptoms within 6 months, the presence of cortical hyperintensity on DWI should raise concerns for MM2C-type sCJD after excluding other etiologies. Bilateral thalamic hypometabolism/hypoperfusion may be more helpful in the clinical diagnosis of MM2T-type sCJD.
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Affiliation(s)
- Zhongyun Chen
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yu Kong
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jing Zhang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Min Chu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Li Liu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kexin Xie
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yue Cui
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Hong Ye
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Junjie Li
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Lin Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Liyong Wu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
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22
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Zhang Y, Mu T, Deng X, Guo R, Xia B, Jiang L, Wu Z, Liu M. New Insights of Biological Functions of Natural Polyphenols in Inflammatory Intestinal Diseases. Int J Mol Sci 2023; 24:ijms24119581. [PMID: 37298531 DOI: 10.3390/ijms24119581] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 04/27/2023] [Revised: 05/17/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
The intestine is critically crucial for nutrient absorption and host defense against exogenous stimuli. Inflammation-related intestinal diseases, including enteritis, inflammatory bowel disease (IBD), and colorectal cancer (CRC), are heavy burdens for human beings due to their high incidence and devastating clinical symptoms. Current studies have confirmed that inflammatory responses, along with oxidative stress and dysbiosis as critical pathogenesis, are involved in most intestinal diseases. Polyphenols are secondary metabolites derived from plants, which possess convincible anti-oxidative and anti-inflammatory properties, as well as regulation of intestinal microbiome, indicating the potential applications in enterocolitis and CRC. Actually, accumulating studies based on the biological functions of polyphenols have been performed to investigate the functional roles and underlying mechanisms over the last few decades. Based on the mounting evidence of literature, the objective of this review is to outline the current research progress regarding the category, biological functions, and metabolism of polyphenols within the intestine, as well as applications for the prevention and treatment of intestinal diseases, which might provide ever-expanding new insights for the utilization of natural polyphenols.
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Affiliation(s)
- Yunchang Zhang
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing 100193, China
| | - Tianqi Mu
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing 100193, China
| | - Xiong Deng
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Ruiting Guo
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Bing Xia
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Linshu Jiang
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
| | - Zhenlong Wu
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing 100193, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China
| | - Ming Liu
- College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102206, China
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23
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Nan H, Liu L, Chen Z, Chu M, Li J, Jing D, Wang Y, Wu L. Octapeptide repeat alteration mutations of the prion protein gene in clinically diagnosed Alzheimer's disease and frontotemporal dementia. Clin Genet 2023. [PMID: 37148197 DOI: 10.1111/cge.14354] [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: 03/20/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/08/2023]
Abstract
Studies focusing on octapeptide repeat alteration mutations in PRNP in Alzheimer's disease (AD) and frontotemporal dementia (FTD) cohorts have been rare. We aim to screen sporadic AD and FTD patients with unknown etiology for the octapeptide repeat insertions and deletions in PRNP. Two hundred and six individuals were screened for alterations to the repeat region in the PRNP gene, including 146 sporadic AD and 60 sporadic FTD patients. Our study showed a 1.5% (3/206) occurrence of the octapeptide repeat alteration mutations in PRNP in a Chinese cohort of sporadic dementia. One late-onset FTD patient and one early-onset AD patient each had a two-octapeptide repeat deletion in PRNP, while one early-onset AD patient had a five-octapeptide repeat insertion mutation. PRNP octapeptide repeat alteration mutations are present in sporadic AD and FTD patients. The genetic investigation for PRNP octapeptide repeat alteration mutations in sporadic dementia patients should be carried out in future clinical studies.
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Affiliation(s)
- Haitian Nan
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Li Liu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Zhongyun Chen
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Min Chu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jieying Li
- Sichuan Provincial Center for Mental Health, Sichuan Academy of Medical Science & Sichuan Provincial People's Hospital, Chengdu, China
| | - Donglai Jing
- Department of Neurology, Rongcheng People's Hospital, Hebei, China
| | - Yihao Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Liyong Wu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
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24
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Niu Y, Du T, Liu Y. Biomechanical Characteristics and Analysis Approaches of Bone and Bone Substitute Materials. J Funct Biomater 2023; 14:jfb14040212. [PMID: 37103302 PMCID: PMC10146666 DOI: 10.3390/jfb14040212] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 03/01/2023] [Revised: 03/24/2023] [Accepted: 04/04/2023] [Indexed: 04/28/2023] Open
Abstract
Bone has a special structure that is both stiff and elastic, and the composition of bone confers it with an exceptional mechanical property. However, bone substitute materials that are made of the same hydroxyapatite (HA) and collagen do not offer the same mechanical properties. It is important for bionic bone preparation to understand the structure of bone and the mineralization process and factors. In this paper, the research on the mineralization of collagen is reviewed in terms of the mechanical properties in recent years. Firstly, the structure and mechanical properties of bone are analyzed, and the differences of bone in different parts are described. Then, different scaffolds for bone repair are suggested considering bone repair sites. Mineralized collagen seems to be a better option for new composite scaffolds. Last, the paper introduces the most common method to prepare mineralized collagen and summarizes the factors influencing collagen mineralization and methods to analyze its mechanical properties. In conclusion, mineralized collagen is thought to be an ideal bone substitute material because it promotes faster development. Among the factors that promote collagen mineralization, more attention should be given to the mechanical loading factors of bone.
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Affiliation(s)
- Yumiao Niu
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Tianming Du
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Youjun Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
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Yang H, Shi W, Fan J, Wang X, Song Y, Lian Y, Shan W, Wang Q. Transcutaneous Auricular Vagus Nerve Stimulation (ta-VNS) for Treatment of Drug-Resistant Epilepsy: A Randomized, Double-Blind Clinical Trial. Neurotherapeutics 2023; 20:870-880. [PMID: 36995682 PMCID: PMC10275831 DOI: 10.1007/s13311-023-01353-9] [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] [Accepted: 02/07/2023] [Indexed: 03/31/2023] Open
Abstract
This study explored the efficacy and safety of transcutaneous auricular vagus nerve stimulation (ta-VNS) in patients with epilepsy. A total of 150 patients were randomly divided into active stimulation group and control group. At baseline and 4, 12, and 20 weeks of stimulation, demographic information, seizure frequency, and adverse events were recorded; at 20 weeks, the patients underwent assessment of quality of life, Hamilton Anxiety and Depression scale, MINI suicide scale, and MoCA scale. Seizure frequency was determined according to the patient's seizure diary. Seizure frequency reduction > 50% was considered effective. During our study, the antiepileptic drugs were maintained at a constant level in all subjects. At 20 weeks, the responder rate was significantly higher in active group than in control group. The relative reduction of seizure frequency in the active group was significantly higher than that in the control group at 20 weeks. Additionally, no significant differences were shown in QOL, HAMA, HAMD, MINI, and MoCA score at 20 weeks. The main adverse events were pain, sleep disturbance, flu-like symptoms, and local skin discomfort. No severe adverse events were reported in active and control group. There were no significant differences in adverse events and severe adverse events between the two groups. The present study showed that ta-VNS is an effective and safe therapy for epilepsy. Furthermore, the benefit in QOL, mood, and cognitive state of ta-VNS needs further validation in the future study although no significant improvement was shown in this study.
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Affiliation(s)
- Huajun Yang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100000, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100000, China
- Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100000, China
- Beijing Key Laboratory of Neuromodulation, Beijing, 100000, China
| | - Weixiong Shi
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100000, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100000, China
- Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100000, China
- Beijing Key Laboratory of Neuromodulation, Beijing, 100000, China
| | - Jingjing Fan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100000, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100000, China
- Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100000, China
- Beijing Key Laboratory of Neuromodulation, Beijing, 100000, China
| | - Xiaoshan Wang
- Nanjing Medical University Affiliated Brain Hospital, Nanjing, 210000, China
| | - Yijun Song
- Tianjin Medical University General Hospital, Tianjin, 300000, China
| | - Yajun Lian
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Wei Shan
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100000, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100000, China
- Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100000, China
- Beijing Key Laboratory of Neuromodulation, Beijing, 100000, China
| | - Qun Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100000, China.
- China National Clinical Research Center for Neurological Diseases, Beijing, 100000, China.
- Collaborative Innovation Center for Brain Disorders, Beijing Institute of Brain Disorders, Capital Medical University, Beijing, 100000, China.
- Beijing Key Laboratory of Neuromodulation, Beijing, 100000, China.
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26
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Zhou L, Han D, Wang X, Chen Z. Probiotic Formulation VSL#3 Interacts with Mesenchymal Stromal Cells To Protect Dopaminergic Neurons via Centrally and Peripherally Suppressing NOD-Like Receptor Protein 3 Inflammasome-Mediated Inflammation in Parkinson's Disease Mice. Microbiol Spectr 2023; 11:e0320822. [PMID: 36728426 PMCID: PMC10100967 DOI: 10.1128/spectrum.03208-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 08/18/2022] [Accepted: 01/08/2023] [Indexed: 02/03/2023] Open
Abstract
Systemic immunomodulation is increasingly recognized among the beneficial effects of mesenchymal stromal cells (MSCs) in treatment of Parkinson's disease (PD), while the underlying mechanism is not fully understood. With the growing popularity of using probiotics as an adjuvant approach in PD treatment, concerns about the added effects of probiotics have been raised. In addition to the molecular mechanism mediating the neuroprotective effects of MSCs, the combined effects of a probiotic formulation, VSL#3, and MSC infusion were also evaluated in PD mice. The animals were weekly treated with human MSCs (hMSCs) via the tail vein, VSL#3 via the gastrointestinal tract, or their combination six times. hMSCs, VSL#3 alone, and their combination markedly ameliorated the decreased striatal dopamine content, loss of dopaminergic neurons in the substantia nigra, increased levels of proinflammatory cytokines in serum, as well as tumor necrosis factor alpha (TNF-α) and interleukin-1β (IL-1β) mRNAs in striatum and peripheral tissues induced by MPTP. Furthermore, hMSCs, VSL#3, and their combination notably downregulated mRNA expression of NOD-like receptor protein 3 (NLRP3) and caspase-1 in brain and peripheral tissues of PD mice. These results suggest that hMSCs, VSL#3, and their combination prevent neurodegenerative changes in PD mice via anti-inflammatory activities in both the central and peripheral systems, possibly through suppressing the NLRP3 inflammasome. Moreover, two-way analysis of variance (ANOVA) indicated that VSL#3 interacts with hMSCs to attenuate neurodegeneration and inhibit NLRP3 inflammasome-mediated inflammation without altering the effects of hMSCs. Major findings of our study support the usage of probiotic formulation VSL#3 as an adjuvant therapy to hMSC infusion in PD treatment. IMPORTANCE This study provides evidence for the neuroprotective activities of human umbilical cord MSCs from the aspect of anti-inflammation actions. hMSCs inhibit the NLRP3 inflammasome and MPTP-induced inflammation in both brain and periphery to relieve the degenerative changes in dopaminergic neurons in PD mice. Furthermore, as an additional therapeutic agent, probiotic formulation VSL#3 interacts with hMSCs in suppressing the NLRP3 inflammasome as well as the central and peripheral anti-inflammatory effects to exert neuroprotective actions in PD mice without altering the actions of hMSCs, suggesting the potential of VSL#3 as an adjuvant therapy in PD treatment. The findings of the present study give a further understanding of the anti-inflammatory activity and the molecular mechanism for the beneficial effects of MSCs as well as the potential application of probiotic formulation as an adjuvant approach to MSC therapy in PD treatment.
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Affiliation(s)
- Liping Zhou
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, National Clinical Research Center for Geriatric Diseases, Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, China
| | - Deqiang Han
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, National Clinical Research Center for Geriatric Diseases, Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, China
| | - Xingzhe Wang
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, National Clinical Research Center for Geriatric Diseases, Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, China
| | - Zhiguo Chen
- Cell Therapy Center, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, National Clinical Research Center for Geriatric Diseases, Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing, China
- Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China
- Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing, China
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27
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Chen C, Zhang Y, Fu X, Chen C, Wu S, Zhang C, Zhang H, Chang Y, Chen S, Zhao J, Liu C, Wang Y. Influential factors and transcriptome analyses of immature diploid embryo anthocyanin accumulation in maize. BMC Plant Biol 2022; 22:609. [PMID: 36564721 PMCID: PMC9789580 DOI: 10.1186/s12870-022-03971-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/30/2022] [Indexed: 05/29/2023]
Abstract
BACKGROUND Anthocyanins are widely applied as a marker for haploid identification after haploid induction in maize. However, the factors affecting anthocyanin biosynthesis in immature embryos and the genes regulating this process remain unclear. RESULTS In this study, we analyzed the influence of genetic background of the male and female parents, embryo age and light exposure on anthocyanin accumulation in embryos. The results showed that light exposure was the most crucial factor enhancing the pigmentation of immature embryos. The identification accuracy of haploid embryos reached 96.4% after light exposure, but was only 11.0% following dark treatment. The total anthocyanin content was 7-fold higher in immature embryos cultured for 24 h under light conditions compared to embryos cultured in the dark. Transcriptome analysis revealed that the differentially expressed genes between immature embryos cultured for 24 h in dark and light chambers were significantly enriched in the pathways of flavonoid, flavone, flavonol and anthocyanin biosynthesis. Among the genes involved in anthocyanin biosynthesis, five up-regulated genes were identified: F3H, DFR, ANS, F3'H and the MYB transcription factor-encoding gene C1. The expression patterns of 14 selected genes were confirmed using quantitative reverse transcription-polymerase chain reaction. CONCLUSION Light is the most important factor facilitating anthocyanin accumulation in immature embryos. After 24 h of exposure to light, the expression levels of the structural genes F3H, DFR, ANS, F3'H and transcription factor gene C1 were significantly up-regulated. This study provides new insight into the factors and key genes regulating anthocyanin biosynthesis in immature embryos, and supports improved efficiency of immature haploid embryo selection during doubled haploid breeding of maize.
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Affiliation(s)
- Chen Chen
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Yuling Zhang
- National Maize Improvement Center of China, College of Agronomy and Biotechnology, Sanya Research Institute, China Agricultural University, Beijing, 100193, China
| | - Xiuyi Fu
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Chuanyong Chen
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Shanshan Wu
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Chunyuan Zhang
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Huasheng Zhang
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Yiyao Chang
- National Maize Improvement Center of China, College of Agronomy and Biotechnology, Sanya Research Institute, China Agricultural University, Beijing, 100193, China
| | - Shaojiang Chen
- National Maize Improvement Center of China, College of Agronomy and Biotechnology, Sanya Research Institute, China Agricultural University, Beijing, 100193, China
| | - Jiuran Zhao
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
| | - Chenxu Liu
- National Maize Improvement Center of China, College of Agronomy and Biotechnology, Sanya Research Institute, China Agricultural University, Beijing, 100193, China.
| | - Yuandong Wang
- Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China.
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28
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Zhao W, Jiang R, Guo W, Guo C, Li S, Wang J, Wang S, Li Y. Screening and Analysis of Multiclass Veterinary Drug Residues in Animal Source Foods using UPLC-Q-Exactive Orbitrap/MS. Bull Environ Contam Toxicol 2021; 107:228-238. [PMID: 34100095 PMCID: PMC8346397 DOI: 10.1007/s00128-021-03273-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
A rapid, simple, and sensitive method of detecting veterinary drug residues in animal food sources, including poultry and pork, was developed and validated. The method was optimized for over 155 veterinary drugs of 21 different classes. Sample pretreatment included a simple solid-liquid extraction step with 0.2% formic acid-acetonitrile-water and a purification step with a PRiME HLB (hydrophile-lipophile balance) solid-phase extraction cartridge. Data were collected using ultra-high-performance liquid chromatography coupled to Quadrupole-Exactive Orbitrap mass spectrometry. The limits of detection of 155 veterinary drugs ranged from 0.1 µg/kg to 10 µg/kg. The recovery rates were between 79.2 and 118.5 % in all matrices studied, with relative standard deviation values less than 15% (n = 6). The evaluated method allows the reliable screening, quantification, and identification of 155 veterinary drug residues in animal source food and has been successfully applied in authentic samples.
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Affiliation(s)
- Wentao Zhao
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Rui Jiang
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Wenping Guo
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Chao Guo
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Shilei Li
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Juanqiang Wang
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Shouwei Wang
- China Meat Research Center, 100068, Beijing, People's Republic of China
| | - Yingying Li
- China Meat Research Center, 100068, Beijing, People's Republic of China.
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Shan W, Mao X, Wang X, Hogan RE, Wang Q. Potential surgical therapies for drug-resistant focal epilepsy. CNS Neurosci Ther 2021; 27:994-1011. [PMID: 34101365 PMCID: PMC8339538 DOI: 10.1111/cns.13690] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 01/12/2021] [Revised: 05/07/2021] [Accepted: 05/18/2021] [Indexed: 12/19/2022] Open
Abstract
Drug-resistant focal epilepsy (DRFE), defined by failure of two antiepileptic drugs, affects 30% of epileptic patients. Epilepsy surgeries are alternative options for this population. Preoperative evaluation is critical to include potential candidates, and to choose the most appropriate procedure to maximize efficacy and simultaneously minimize side effects. Traditional procedures involve open skull surgeries and epileptic focus resection. Alternatively, neuromodulation surgeries use peripheral nerve or deep brain stimulation to reduce the activities of epileptogenic focus. With the advanced improvement of laser-induced thermal therapy (LITT) technique and its utilization in neurosurgery, magnetic resonance-guided LITT (MRgLITT) emerges as a minimal invasive approach for drug-resistant focal epilepsy. In the present review, we first introduce drug-resistant focal epilepsy and summarize the indications, pros and cons of traditional surgical procedures and neuromodulation procedures. And then, focusing on MRgLITT, we thoroughly discuss its history, its technical details, its safety issues, and current evidence on its clinical applications. A case report on MRgLITT is also included to illustrate the preoperational evaluation. We believe that MRgLITT is a promising approach in selected patients with drug-resistant focal epilepsy, although large prospective studies are required to evaluate its efficacy and side effects, as well as to implement a standardized protocol for its application.
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Affiliation(s)
- Wei Shan
- Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina
- National Center for Clinical Medicine of Neurological DiseasesBeijingChina
- Beijing Institute for Brain DisordersBeijingChina
- Beijing Key Laboratory of Neuro‐modulationBeijingChina
| | - Xuewei Mao
- Shandong Key Laboratory of Industrial Control TechnologySchool of AutomationQingdao UniversityQingdaoChina
| | - Xiu Wang
- National Center for Clinical Medicine of Neurological DiseasesBeijingChina
| | - Robert E. Hogan
- Departments of Neurology and NeurosurgerySchool of MedicineWashington University in St. LouisSt. LouisMOUSA
| | - Qun Wang
- Department of NeurologyBeijing Tiantan HospitalCapital Medical UniversityBeijingChina
- National Center for Clinical Medicine of Neurological DiseasesBeijingChina
- Beijing Institute for Brain DisordersBeijingChina
- Beijing Key Laboratory of Neuro‐modulationBeijingChina
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30
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Hou P, Wang F, Luo B, Li A, Wang C, Shabala L, Ahmed HAI, Deng S, Zhang H, Song P, Zhang Y, Shabala S, Chen L. Antioxidant Enzymatic Activity and Osmotic Adjustment as Components of the Drought Tolerance Mechanism in Carex duriuscula. Plants (Basel) 2021; 10:436. [PMID: 33668813 PMCID: PMC7996351 DOI: 10.3390/plants10030436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 12/02/2022]
Abstract
Drought stress is a major environmental constraint for plant growth. Climate-change-driven increases in ambient temperatures resulted in reduced or unevenly distributed rainfalls, leading to increased soil drought. Carex duriuscula C. A. Mey is a typical drought-tolerant sedge, but few reports have examined the mechanisms conferring its tolerant traits. In the present study, the drought responses of C. duriuscula were assessed by quantifying activity of antioxidant enzymes in its leaf and root tissues and evaluating the relative contribution of organic and inorganic osmolyte in plant osmotic adjustment, linking it with the patterns of the ion acquisition by roots. Two levels of stress-mild (MD) and severe (SD) drought treatments-were used, followed by re-watering. Drought stress caused reduction in a relative water content and chlorophyll content of leaves; this was accompanied by an increase in the hydrogen peroxide (H2O2) and superoxide (O2-) contents in leaves and roots. Under MD stress, the activities of catalase (CAT), peroxidase (POD), and glutathione peroxidase (GPX) increased in leaves, whereas, in roots, only CAT and POD activities increased. SD stress led to an increase in the activities of CAT, POD, superoxide dismutase (SOD), and GPX in both tissues. The levels of proline, soluble sugars, and soluble proteins in the leaves also increased. Under both MD and SD stress conditions, C. duriuscula increased K+, Na+, and Cl- uptake by plant roots, which resulted in an increased K+, Na+, and Cl- concentrations in leaves and roots. This reliance on inorganic osmolytes enables a cost-efficient osmotic adjustment in C. duriuscula. Overall, this study revealed that C. duriuscula was able to survive arid environments due to an efficient operation of its ROS-scavenging systems and osmotic adjustment mechanisms.
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Affiliation(s)
- Peichen Hou
- Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (P.H.); (B.L.); (A.L.); (C.W.)
- Tasmanian Institute of Agriculture, University of Tasmania, Tasmania 7001, Australia; (L.S.); (H.A.I.A.)
| | - Feifei Wang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Plant Functional Genomics of the Ministry of Education, College of Agriculture, Yangzhou University, Yangzhou 225009, China;
| | - Bin Luo
- Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (P.H.); (B.L.); (A.L.); (C.W.)
| | - Aixue Li
- Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (P.H.); (B.L.); (A.L.); (C.W.)
| | - Cheng Wang
- Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (P.H.); (B.L.); (A.L.); (C.W.)
| | - Lana Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Tasmania 7001, Australia; (L.S.); (H.A.I.A.)
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528011, China
| | - Hassan Ahmed Ibraheem Ahmed
- Tasmanian Institute of Agriculture, University of Tasmania, Tasmania 7001, Australia; (L.S.); (H.A.I.A.)
- Department of Botany, Faculty of Science, Port Said University, Port Said 42526, Egypt
| | - Shurong Deng
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (S.D.); (Y.Z.)
| | - Huilong Zhang
- Tianjin Research Institute of Forestry of Chinese Academy of Forestry, Tianjin 300000, China;
| | - Peng Song
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Yuhong Zhang
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; (S.D.); (Y.Z.)
| | - Sergey Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Tasmania 7001, Australia; (L.S.); (H.A.I.A.)
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528011, China
| | - Liping Chen
- Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (P.H.); (B.L.); (A.L.); (C.W.)
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Zhang C, Dong M, Li J, Cao Q. A Modified Kinematic Model of Shoulder Complex Based on Vicon Motion Capturing System: Generalized GH Joint with Floating Centre. Sensors (Basel) 2020; 20:E3713. [PMID: 32630828 PMCID: PMC7374450 DOI: 10.3390/s20133713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/28/2020] [Accepted: 07/01/2020] [Indexed: 11/30/2022]
Abstract
Due to the complex coupling motion of shoulder mechanism, only a small amount of quantitative information is available in the existing literature, although various kinematic models of the shoulder complex have been proposed. This study focused on the specific motion coupling relationship between glenohumeral (GH) joint center displacement variable quantity relative to the thorax coordinate system and humeral elevation angle to describe the shoulder complex. The mechanism model of shoulder complex was proposed with an algorithm designed. Subsequently, twelve healthy subjects performed right arm raising, lowering, as well as raising and lowering (RAL) movements in sixteen elevation planes, and the motion information of the markers attached to the thorax, scapula, and humerus was captured by using Vicon motion capturing system. Then, experimental data was processed and the generalized GH joint with floating center was quantized. Simultaneously, different coupling characteristics were detected during humerus raising as well as lowering movements. The motion coupling relationships in different phases were acquired, and a modified kinematic model was established, with the description of overall motion characteristics of shoulder complex validated by comparing the results with a prior kinematic model from literature, showing enough accuracy for the design of upper limb rehabilitation robots.
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Affiliation(s)
| | | | - Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China; (C.Z.); (M.D.); (Q.C.)
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Zhang L, Wang Y, Zhang Q, Jiang Y, Zhang H, Li R. Overexpression of HbMBF1a, encoding multiprotein bridging factor 1 from the halophyte Hordeum brevisubulatum, confers salinity tolerance and ABA insensitivity to transgenic Arabidopsis thaliana. Plant Mol Biol 2020; 102:1-17. [PMID: 31655970 PMCID: PMC6976555 DOI: 10.1007/s11103-019-00926-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/13/2019] [Indexed: 05/11/2023]
Abstract
HbMBF1a was isolated and characterized in H. brevisubulatum, and overexpressed HbMBF1a could enhance the salt tolerance and ABA insensitivity in Arabidopsis thaliana. The transcript levels of stress-responsive genes were significantly increased in the transgenic lines under salt and ABA conditions. Salinity is an abiotic stress that considerably affects plant growth, yield, and distribution. Hordeum brevisubulatum is a halophyte that evolved to become highly tolerant to salinity. Multiprotein bridging factor 1 (MBF1) is a transcriptional coactivator and an important regulator of stress tolerance. In this study, we isolated and characterized HbMBF1a based on the transcriptome data of H. brevisubulatum grown under saline conditions. We overexpressed HbMBF1a in Arabidopsis thaliana and compared the phenotypes of the transgenic lines and the wild-type in response to stresses. The results indicated that HbMBF1a expression was induced by salt and ABA treatments during the middle and late stages. The overexpression of HbMBF1a in A. thaliana resulted in enhanced salt tolerance and ABA insensitivity. More specifically, the enhanced salt tolerance manifested as the increased seed germination and seedling growth and development. Similarly, under ABA treatments, the cotyledon greening rate and seedling root length were higher in the HbMBF1a-overexpressing lines, suggesting the transgenic plants were better adapted to high exogenous ABA levels. Furthermore, the transcript levels of stress-responsive genes were significantly increased in the transgenic lines under salt and ABA conditions. Thus, HbMBF1a is a positive regulator of salt and ABA responses, and the corresponding gene may be useful for producing transgenic plants that are salt tolerant and/or ABA insensitive, with few adverse effects. This study involved a comprehensive analysis of HbMBF1a. The results may provide the basis and insight for the application of MBF1 family genes for developing stress-tolerant crops.
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Affiliation(s)
- Lili Zhang
- Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Huayuan Middle Road, Haidian District, Beijing, 100097 China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, 100097 China
| | - Yunxiao Wang
- Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Huayuan Middle Road, Haidian District, Beijing, 100097 China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, 100097 China
| | - Qike Zhang
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024 China
| | - Ying Jiang
- Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Huayuan Middle Road, Haidian District, Beijing, 100097 China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, 100097 China
| | - Haiwen Zhang
- Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Huayuan Middle Road, Haidian District, Beijing, 100097 China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, 100097 China
| | - Ruifen Li
- Beijing Academy of Agriculture and Forestry Sciences, No. 9 Shuguang Huayuan Middle Road, Haidian District, Beijing, 100097 China
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing, 100097 China
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Sun G, Fan T, Sun X, Hao Y, Cui X, Zhao L, Ren T, Zhou Y, Zhong R, Peng Y. In Silico Prediction of O⁶-Methylguanine-DNA Methyltransferase Inhibitory Potency of Base Analogs with QSAR and Machine Learning Methods. Molecules 2018; 23:E2892. [PMID: 30404161 PMCID: PMC6278368 DOI: 10.3390/molecules23112892] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/04/2018] [Accepted: 11/06/2018] [Indexed: 12/24/2022] Open
Abstract
O⁶-methylguanine-DNA methyltransferase (MGMT), a unique DNA repair enzyme, can confer resistance to DNA anticancer alkylating agents that modify the O⁶-position of guanine. Thus, inhibition of MGMT activity in tumors has a great interest for cancer researchers because it can significantly improve the anticancer efficacy of such alkylating agents. In this study, we performed a quantitative structure activity relationship (QSAR) and classification study based on a total of 134 base analogs related to their ED50 values (50% inhibitory concentration) against MGMT. Molecular information of all compounds were described by quantum chemical descriptors and Dragon descriptors. Genetic algorithm (GA) and multiple linear regression (MLR) analysis were combined to develop QSAR models. Classification models were generated by seven machine-learning methods based on six types of molecular fingerprints. Performances of all developed models were assessed by internal and external validation techniques. The best QSAR model was obtained with Q²Loo = 0.83, R² = 0.87, Q²ext = 0.67, and R²ext = 0.69 based on 84 compounds. The results from QSAR studies indicated topological charge indices, polarizability, ionization potential (IP), and number of primary aromatic amines are main contributors for MGMT inhibition of base analogs. For classification studies, the accuracies of 10-fold cross-validation ranged from 0.750 to 0.885 for top ten models. The range of accuracy for the external test set ranged from 0.800 to 0.880 except for PubChem-Tree model, suggesting a satisfactory predictive ability. Three models (Ext-SVM, Ext-Tree and Graph-RF) showed high and reliable predictive accuracy for both training and external test sets. In addition, several representative substructures for characterizing MGMT inhibitors were identified by information gain and substructure frequency analysis method. Our studies might be useful for further study to design and rapidly identify potential MGMT inhibitors.
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Affiliation(s)
- Guohui Sun
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Tengjiao Fan
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Xiaodong Sun
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Yuxing Hao
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Xin Cui
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Lijiao Zhao
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Ting Ren
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Yue Zhou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 2A Nanwei Road, Beijing 100050, China.
| | - Rugang Zhong
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science & Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment & Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China.
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Zhang Y, Du J, Wang J, Ma L, Lu X, Pan X, Guo X, Zhao C. High-throughput micro-phenotyping measurements applied to assess stalk lodging in maize (Zea mays L.). Biol Res 2018; 51:40. [PMID: 30368254 PMCID: PMC6203980 DOI: 10.1186/s40659-018-0190-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/09/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND The biomechanical properties of maize stalks largely determine their lodging resistance, which affects crop yield per unit area. However, the quantitative and qualitative relationship between micro-phenotypes and the biomechanics of maize stalks is still under examined. In particular, the roles of the number, geometry, and distribution of vascular bundles of stalks in maize lodging resistance remain unclear. Research on these biomechanical properties will benefit from high-resolution micro-phenotypic image acquisition capabilities, which have been improved by modern X-ray imaging devices such as micro-CT and the development of micro-phenotyping analysis software. Hence, high-throughput image analysis and accurate quantification of anatomical phenotypes of stalks are necessary. RESULTS We have updated VesselParser version 1.0 to version 2.0 and have improved its performance, accuracy, and computation strategies. Anatomical characteristics of the second and third stalk internodes of the cultivars 'Jingke968' and 'Jingdan38' were analyzed using VesselParser 2.0. The relationships between lodging resistance and anatomical phenotypes of stalks between the two different maize varieties were investigated. The total area of vascular bundles in the peripheral layer, auxiliary axis diameter, and total area of vascular bundles were revealed to have the highest correlation with mechanical properties, and anatomical phenotypes of maize stalk were better predictors of mechanical properties than macro features observed optically from direct measurement, such as diameter and perimeter. CONCLUSIONS This study demonstrates the utility of VesselParser 2.0 in assessing stalk mechanical properties. The combination of anatomical phenotypes and mechanical behavior research provides unique insights into the problem of stalk lodging, showing that micro phenotypes of vascular bundles are good predictors of maize stalk mechanical properties that may be important indices for the evaluation and identification of the biomechanical properties to improve lodging resistance of future maize varieties.
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Affiliation(s)
- Ying Zhang
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Jianjun Du
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Jinglu Wang
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Liming Ma
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Xianju Lu
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Xiaodi Pan
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Xinyu Guo
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
| | - Chunjiang Zhao
- Beijing Key Lab of Digital Plant, Beijing Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Shuguang Huayuan Middle Road, Haidian District, No. 11, Beijing, 100097 People’s Republic of China
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Fan T, Sun G, Zhao L, Cui X, Zhong R. QSAR and Classification Study on Prediction of Acute Oral Toxicity of N-Nitroso Compounds. Int J Mol Sci 2018; 19:E3015. [PMID: 30282923 PMCID: PMC6213880 DOI: 10.3390/ijms19103015] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 09/29/2018] [Accepted: 09/30/2018] [Indexed: 12/30/2022] Open
Abstract
To better understand the mechanism of in vivo toxicity of N-nitroso compounds (NNCs), the toxicity data of 80 NNCs related to their rat acute oral toxicity data (50% lethal dose concentration, LD50) were used to establish quantitative structure-activity relationship (QSAR) and classification models. Quantum chemistry methods calculated descriptors and Dragon descriptors were combined to describe the molecular information of all compounds. Genetic algorithm (GA) and multiple linear regression (MLR) analyses were combined to develop QSAR models. Fingerprints and machine learning methods were used to establish classification models. The quality and predictive performance of all established models were evaluated by internal and external validation techniques. The best GA-MLR-based QSAR model containing eight molecular descriptors was obtained with Q²loo = 0.7533, R² = 0.8071, Q²ext = 0.7041 and R²ext = 0.7195. The results derived from QSAR studies showed that the acute oral toxicity of NNCs mainly depends on three factors, namely, the polarizability, the ionization potential (IP) and the presence/absence and frequency of C⁻O bond. For classification studies, the best model was obtained using the MACCS keys fingerprint combined with artificial neural network (ANN) algorithm. The classification models suggested that several representative substructures, including nitrile, hetero N nonbasic, alkylchloride and amine-containing fragments are main contributors for the high toxicity of NNCs. Overall, the developed QSAR and classification models of the rat acute oral toxicity of NNCs showed satisfying predictive abilities. The results provide an insight into the understanding of the toxicity mechanism of NNCs in vivo, which might be used for a preliminary assessment of NNCs toxicity to mammals.
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Affiliation(s)
- Tengjiao Fan
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Guohui Sun
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Lijiao Zhao
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Xin Cui
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Rugang Zhong
- Beijing Key Laboratory of Environmental & Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
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Li X, Chen Y, Song X, Zhang Y, Li H, Zhao Y. The development and application of in silico models for drug induced liver injury. RSC Adv 2018; 8:8101-8111. [PMID: 35542036 PMCID: PMC9078522 DOI: 10.1039/c7ra12957b] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/09/2018] [Indexed: 11/23/2022] Open
Abstract
Drug-induced liver injury (DILI), caused by drugs, herbal agents or nutritional supplements, is a major issue for patients and the pharmaceutical industry. It has been a leading cause of clinical trials failure and withdrawal of FDA approval. In this research, we focused on in silico estimation of chemical DILI potential on humans based on structurally diverse organic chemicals. We developed a series of binary classification models using five different machine learning methods and eight different feature reduction methods. The model, developed with the support vector machine (SVM) and the MACCS fingerprint, performed best both on the test set and external validation. It achieved a prediction accuracy of 80.39% on the test set and 82.78% on external validation. We made this model available at http://opensource.vslead.com/. The user can freely predict the DILI potential of molecules. Furthermore, we analyzed the difference of distributions of 12 key physical-chemical properties between DILI-positive and DILI-negative compounds and 20 privileged substructures responsible for DILI were identified from the Klekota-Roth fingerprint. Moreover, since traditional Chinese medicine (TCM)-induced liver injury is also one of the major concerns among the toxic effects, we evaluated the DILI potential of TCM ingredients using the MACCS_SVM model developed in this study. We hope the model and privileged substructures could be useful complementary tools for chemical DILI evaluation.
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Affiliation(s)
- Xiao Li
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
- Beijing Key Laboratory of Cloud Computing Key Technology and Application, Beijing Computing Center, Beijing Academy of Science and Technology 7 Fengxian road Beijing 100094 China +86-10-5934-1855 +86-10-5934-1764
| | - Yaojie Chen
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
| | - Xinrui Song
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
| | - Yuan Zhang
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
| | - Huanhuan Li
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
| | - Yong Zhao
- Beijing Beike Deyuan Bio-Pharm Technology Co. Ltd. 7 Fengxian road Beijing 100094 China +86-10-5934-1890
- Beijing Key Laboratory of Cloud Computing Key Technology and Application, Beijing Computing Center, Beijing Academy of Science and Technology 7 Fengxian road Beijing 100094 China +86-10-5934-1855 +86-10-5934-1764
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Zhang L, Zhang Q, Jiang Y, Li Y, Zhang H, Li R. Reference genes identification for normalization of qPCR under multiple stresses in Hordeum brevisubulatum. Plant Methods 2018; 14:110. [PMID: 30568722 PMCID: PMC6297944 DOI: 10.1186/s13007-018-0379-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 12/10/2018] [Indexed: 05/03/2023]
Abstract
BACKGROUND Real-time quantitative PCR has been widely used as the most reliable method to measure gene expression, due to its high accuracy and specificity. Wild barley (Hordeum brevisubulatum (Trin.) Link) is a wild relative species in Triticeae that has strong tolerance to abiotic stresses and extremely wide adaptation. However, suitable references gene have not been documented for standardization of gene expression in wild barley under abiotic stress. RESULTS Here we report the first systematic and comprehensive analysis of reference genes for quantitative real-time PCR standardization in wild barley. We selected 11 genes, including ACT (Actin), ADP (ADP-ribosylation factor 1), CYP2 (Cyclophilin 2), EF-1α (Elongation factor 1-alpha), GAPDH (Glyceraldehyde 3-phosphate dehydrogenase), HSP90 (Heat shock protein 90), TUBα (Alpha-tubulin), TUBβ6 (Beta-tubulin 6), UBI (Ubiquitin), 18SrRNA-1 (guanine1575-N7-methyltransferase) and 18SrRNA-3 (adenine1779-N6-dimethyltransferase) from a wild barley transcriptome database and analyzed their expression stabilities in shoots and roots of wild barley seedling under various stress conditions using comparative ΔCt, BestKeeper, Normfinder and geNorm software. The results demonstrated that ADP was the most suitable reference gene in salt stress while UBI showed peak stability under mannitol and ABA stress; EF-1α was the most appropriate reference gene for PEG, GA3, ethylene and heat stress; 18SrRNA-3 was the best choice for cold stress; and TUBα was the first stable gene across different tissues. CONCLUSIONS Our main contribution was to identify reference genes with suitable and stable expression in wild barley under various stress conditions and in different tissues to provide a useful resource for future studies. The results demonstrate the importance of transcriptome data as a useful resource for the screening of candidate reference genes and highlight the need for specific reference genes for specific conditions. Furthermore, these findings will provide valuable information for wild barley and relative species for future research.
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Affiliation(s)
- Lili Zhang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Qike Zhang
- College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Ying Jiang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yang Li
- College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Haiwen Zhang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ruifen Li
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Beijing Agro-biotechnology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Su A, Song W, Xing J, Zhao Y, Zhang R, Li C, Duan M, Luo M, Shi Z, Zhao J. Identification of Genes Potentially Associated with the Fertility Instability of S-Type Cytoplasmic Male Sterility in Maize via Bulked Segregant RNA-Seq. PLoS One 2016; 11:e0163489. [PMID: 27669430 PMCID: PMC5036866 DOI: 10.1371/journal.pone.0163489] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 09/09/2016] [Indexed: 12/16/2022] Open
Abstract
S-type cytoplasmic male sterility (CMS-S) is the largest group among the three major types of CMS in maize. CMS-S exhibits fertility instability as a partial fertility restoration in a specific nuclear genetic background, which impedes its commercial application in hybrid breeding programs. The fertility instability phenomenon of CMS-S is controlled by several minor quantitative trait locus (QTLs), but not the major nuclear fertility restorer (Rf3). However, the gene mapping of these minor QTLs and the molecular mechanism of the genetic modifications are still unclear. Using completely sterile and partially rescued plants of fertility instable line (FIL)-B, we performed bulk segregant RNA-Seq and identified six potential associated genes in minor effect QTLs contributing to fertility instability. Analyses demonstrate that these potential associated genes may be involved in biological processes, such as floral organ differentiation and development regulation, energy metabolism and carbohydrates biosynthesis, which results in a partial anther exsertion and pollen fertility restoration in the partially rescued plants. The single nucleotide polymorphisms (SNPs) identified in two potential associated genes were validated to be related to the fertility restoration phenotype by KASP marker assays. This novel knowledge contributes to the understanding of the molecular mechanism of the partial fertility restoration of CMS-S in maize and thus helps to guide the breeding programs.
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Affiliation(s)
- Aiguo Su
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Wei Song
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Jinfeng Xing
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Yanxin Zhao
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Ruyang Zhang
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Chunhui Li
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Minxiao Duan
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Meijie Luo
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
| | - Zi Shi
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
- * E-mail: (ZS); (JZ)
| | - Jiuran Zhao
- Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing, 100097, China
- * E-mail: (ZS); (JZ)
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