473 results on '"Mengjie Wang"'
Search Results
2. Feasibility of an exercise-nutrition-psychology integrated rehabilitation model based on mobile health and virtual reality for cancer patients: a single-center, single-arm, prospective phase II study
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Yuan Qi, Mengjie Wang, Ya Xue, Jingyan Yue, Chunjian Qi, Weihu Shang, Weifen Meng, Wenyu Zhu, Xiaolin Pu, Dongqing Li, and Hua Jiang
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Integrated rehabilitation ,Exercise ,Nutrition ,Psychology ,Virtual reality ,Mobile health ,Special situations and conditions ,RC952-1245 - Abstract
Abstract Objective Explore the feasibility of a mobile health(mHealth) and virtual reality (VR) based nutrition-exercise-psychology integrated rehabilitation model in Chinese cancer patients. Methods We recruited cancer patients in the Oncology department of the Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University from October 2022 to April 2023. The rehabilitation program was provided by a team of medical oncologists, dietitians, psychotherapists, and oncology specialist nurses. Participants received standard anti-cancer therapy and integrated intervention including hospitalized group-based exercise classes, at-home physical activity prescription, behavior change education, oral nutrition supplements, and psychological counseling. An effective intervention course includes two consecutive hospitalization and two periods of home-based rehabilitation (8 weeks). Access the feasibility as well as changes in aspects of physical, nutritional, and psychological status. Results At the cutoff date of April 2023, the recruitment rate was 75% (123/165). 11.4%patients were lost to follow-up, and 3.25% withdrew halfway. Respectively, the completion rate of nutrition, exercise, and psychology were 85%,55%, and 63%. Nutrition interventions show the highest compliance. The parameters in nutrition, psychology, muscle mass, and quality of life after the rehabilitation showed significant improvements (P .05) in handgrip strength and 6-minute walking speed. Conclusion It is feasible to conduct mHealth and VR-based nutrition-exercise-psychology integrated rehabilitation model in Chinese cancer patients. A larger multi-center trial is warranted in the future. Trial registration ChiCTR2200065748 Registered 14 November 2022.
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- 2024
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3. Macrophages in the inflammatory response to endotoxic shock
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Xinjie Zhao, Mengjie Wang, Yanru Zhang, Yiyi Zhang, Haojie Tang, Hongyi Yue, Li Zhang, and Dan Song
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endotoxic shock ,inflammation ,lipopolysaccharide ,macrophages ,NF‐κB/MAPK signaling pathway ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Abstract Background Endotoxic shock, particularly prevalent in intensive care units, represents a significant medical challenge. Endotoxin, upon invading the host, triggers intricate interactions with the innate immune system, particularly macrophages. This activation leads to the production of inflammatory mediators such as tumor necrosis factor‐alpha, interleukin‐6, and interleukin‐1‐beta, as well as aberrant activation of the nuclear factor‐kappa‐B and mitogen‐activated protein kinase signaling pathways. Objective This review delves into the intricate inflammatory cascades underpinning endotoxic shock, with a particular focus on the pivotal role of macrophages. It aims to elucidate the clinical implications of these processes and offer insights into potential therapeutic strategies. Results Macrophages, central to immune regulation, manifest in two distinct subsets: M1 (classically activated subtype) macrophages and M2 (alternatively activated subtype) macrophages. The former exhibit an inflammatory phenotype, while the latter adopt an anti‐inflammatory role. By modulating the inflammatory response in patients with endotoxic shock, these macrophages play a crucial role in restoring immune balance and facilitating recovery. Conclusion Macrophages undergo dynamic changes within the immune system, orchestrating essential processes for maintaining tissue homeostasis. A deeper comprehension of the mechanisms governing macrophage‐mediated inflammation lays the groundwork for an anti‐inflammatory, targeted approach to treating endotoxic shock. This understanding can significantly contribute to the development of more effective therapeutic interventions.
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- 2024
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4. miR-191-5p suppresses PRRSV replication by targeting porcine EGFR to enhance interferon signaling
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Yu Pan, Lin Zhang, Wenjie Ma, Yassein M. Ibrahim, Wenli Zhang, Mengjie Wang, Xinrong Wang, Yunfei Xu, Caixia Gao, Hongyan Chen, He Zhang, Changyou Xia, and Yue Wang
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porcine reproductive and respiratory syndrome virus ,miR-191-5p ,porcine epidermal growth factor receptor ,signal transducer and activator of transcription 3 ,IFN-I ,Microbiology ,QR1-502 - Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is a major thread to the global swine industry, lack of effective control strategies. This study explores the regulatory role of a small non-coding RNA, miR-191-5p, in PRRSV infection. We observed that miR-191-5p significantly inhibits PRRSV in porcine alveolar macrophages (PAMs), contrasting with negligible effects in MARC-145 and HEK293-CD163 cells, suggesting a cell-specific antiviral effect. Further investigation unveiled that miR-191-5p directly targets the porcine epidermal growth factor receptor (EGFR), whose overexpression or EGF-induced activation suppresses type I interferon (IFN-I) signaling, promoting PRRSV replication. In contrast, siRNA-or miR-191-5p-induced EGFR downregulation or EGFR inhibitor boosts IFN-I signaling, reducing viral replication. Notably, this miRNA alleviates the suppressive effect of EGF on IFN-I signaling, underscoring its regulatory function. Further investigation revealed interconnections among miR-191-5p, EGFR and signal transducer and activator of transcription 3 (STAT3). Modulation of STAT3 activity influenced IFN-I signaling and PRRSV replication, with STAT3 knockdown countering EGFR activation-induced virus replication. Combination inhibition of STAT3 and miR-191-5p suggests that STAT3 acts downstream in EGFR’s antiviral response. Furthermore, miR-191-5p’s broad efficacy in restricting various PRRSV strains in PAMs was identified. Collectively, these findings elucidate a novel mechanism of miR-191-5p in activating host IFN-I signaling to inhibit PRRSV replication, highlighting its potential in therapeutic applications against PRRSV.
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- 2024
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5. Non-apoptotic cell death in osteoarthritis: Recent advances and future
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Pengfei Ji, Ziyu Zhou, Jinyuan Zhang, Tianding Bai, Chao Li, Binghao Zhou, Mengjie Wang, Yingdong Tan, and Shengwang Wang
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Osteoarthritis ,Autophagy ,Pyroptosis ,Ferroptosis ,Necroptosis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Osteoarthritis (OA) is the most common degenerative joint disease. Multiple tissues are altered during the development of OA, resulting in joint pain and permanent damage to the osteoarticular joints. Current research has demonstrated that non-apoptotic cell death plays a crucial role in OA. With the continuous development of targeted therapies, non-apoptotic cell death has shown great potential in the prevention and treatment of OA. We systematically reviewed research progress on the role of non-apoptotic cell death in the pathogenesis, development, and outcome of OA, including autophagy, pyroptosis, ferroptosis, necroptosis, immunogenic cell death, and parthanatos. This article reviews the mechanism of non-apoptotic cell death in OA and provides a theoretical basis for the identification of new targets for OA treatment.
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- 2024
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6. Cell life-or-death events in osteoporosis: All roads lead to mitochondrial dynamics
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Zhichao Li, Songlin Liang, Liqing Ke, Mengjie Wang, Kuanhui Gao, Dandan Li, Zhanwang Xu, Nianhu Li, Peng Zhang, and Wenxiang Cheng
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Mitochondrial dynamics ,Osteoporosis ,Programmed cell death ,Apoptosis ,Necroptosis ,Pyroptosis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Mitochondria exhibit heterogeneous shapes and networks within and among cell types and tissues, also in normal or osteoporotic bone tissues with complex cell types. This dynamic characteristic is determined by the high plasticity provided by mitochondrial dynamics and is stemmed from responding to the survival and functional requirements of various bone cells in a specific microenvironments. In contrast, mitochondrial dysfunction, induced by dysregulation of mitochondrial dynamics, may act as a trigger of cell death signals, including common apoptosis and other forms of programmed cell death (PCD). These PCD processes consisting of tightly structured cascade gene expression events, can further influence the bone remodeling by facilitating the death of various bone cells. Mitochondrial dynamics, therefore, drive the bone cells to stand at the crossroads of life and death by integrating external signals and altering metabolism, shape, and signal-response properties of mitochondria. This implies that targeting mitochondrial dynamics displays significant potential in treatment of osteoporosis. Considerable effort has been made in osteoporosis to emphasize the parallel roles of mitochondria in regulating energy metabolism, calcium signal transduction, oxidative stress, inflammation, and cell death. However, the emerging field of mitochondrial dynamics-related PCD is not well understood. Herein, to bridge the gap, we outline the latest knowledge on mitochondrial dynamics regulating bone cell life or death during normal bone remodeling and osteoporosis.
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- 2024
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7. The Anti-Hypoxic Mechanism of Sesamoside Determined Using Network Pharmacology
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Dan Song, Mengjie Wang, Yiyi Zhang, Xinjie Zhao, Yanru Zhang, Hongyi Yue, and Li Zhang
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Therapeutics. Pharmacology ,RM1-950 - Abstract
This study aims to elucidate the anti-hypoxia mechanism of sesamoside, an active component of Phlomis younghusbandii Mukerjee , through a network pharmacology approach. Sesamoside has demonstrated potential anti-oxidant and antiglycation activities. The hypoxia-related disease targets were collected from databases like GeneCards and OMIM. Protein-protein interaction (PPI) networks were constructed using the STRING database. GO/KEGG enrichment analysis was performed using the Metascape database to identify biological processes and signaling pathways. Our results indicate that sesamoside interacts with multiple targets related to glucose and lipid metabolism, nucleotide metabolism, and inflammatory, and we find that AKR1B1 (AR) plays a crucial role in sesamoside responses to hypoxia. Molecular docking studies were performed using Autodock software, revealing good binding activity between sesamoside and AR. We then use CCK-8 assay, qPCR, WB, and ELISA analysis to validate the role of sesamoside in regulating AR and participating in anti-hypoxia through cell experiments. The results show that compared with the hypoxia group, sesamoside treatment significantly improves the expression of AR and inflammation cytokines. In summary, this study sheds light on the anti-hypoxia mechanism of sesamoside using a network pharmacology approach, providing a theoretical basis and experimental foundation for its application in the prevention and treatment of hypoxic diseases.
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- 2024
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8. Analysis of geological hazards caused by the '23 • 7' heavy rainfall in the northern section of Taihang Mountain in Hebei Province
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Fuji GU, Long QIAN, Mengjie WANG, Ronghui SHEN, Meng LI, Lifeng WANG, and Guoqin YAN
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doksuri ,extreme precipitation ,geological disaster ,characteristic pattern ,taihang mountain ,Geology ,QE1-996.5 - Abstract
Heavy rainfall is the main factor triggering geological disasters. In the northern region of China, most of the researches focus on the geologic disasters caused by short-term heavy rainfall, and the researches on the characteristics of geologic disasters under regional extreme precipitation conditions are still insufficient. Based on the sample analysis of geological disasters triggered by the “23•7” heavy rainfall, the regular characteristics of geological disasters in the Hebei section of the Taihang Mountains were studied. The results show that: (1) geologic hazards show the trend of multiple and group occurrence, and the number of occurrences reaches a new high in history, and the types of avalanches, landslides, and mudslides are the main ones, which stimulate new geologic hazards to increase significantly; (2) the spatial and temporal scales of occurrence of geologic hazards and the area of heavy rainfall are highly coincident with each other, and the south and north sections of the Taihang Mountains show a differentiated distribution; (3) mudslides cause the most damage, and slope-type mudslides are obviously more frequent, and the loose material-covered landslides are more frequent and easier to occur. cover type landslides are more frequent and prone to occur. The results of the study can provide a reference for the prevention of geologic disasters under extreme precipitation conditions.
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- 2024
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9. Analysis of related factors for pathological upgrading of cervical biopsy from CIN3 to cancer after conical resection
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Zhifang Li, Guiju Zhou, Longfan Jiang, and Mengjie Wang
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Cervical intraepithelial neoplasia ,Biopsy ,Uterine cervical neoplasms ,Pathological upgrading ,Risk factors ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background To investigate related factors for postoperative pathological upgrading of cervical biopsy to cervical cancer (CC) in patients with cervical intraepithelial neoplasia (CIN)3 after conical resection. Methods This retrospective study collected data from patients diagnosed with CIN3 by cervical biopsies at the author’s Hospital between January 2012 and December 2022. The primary outcome was the pathological results of patients after conical resection. The pathological findings were categorized into the pathological upgrading group if postoperative pathology indicated CC, while those with normal, inflammatory, or cervical precancerous lesions were classified into the pathological non-upgrading group. The factors associated with upgrading were identified using multivariable logistic regression analysis. Results Among 511 patients, there were 125 patients in the pathological upgrading group (24.46%). The patients in the upgrading group were younger (47.68 ± 9.46 vs. 52.11 ± 7.02, P
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- 2024
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10. Estimating asset wealth using multidimensional luminous information in areas lacking nighttime light
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Mengjie Wang and Xi Li
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Asset wealth ,nighttime light ,sustainable development goals ,unlit areas ,Mathematical geography. Cartography ,GA1-1776 - Abstract
ABSTRACTDue to the difficulty of obtaining survey data, nighttime light (NTL) imagery has emerged as valuable alternative data for asset wealth estimation. However, the nighttime light values do not differentiate between levels of asset wealth in various unlit areas, as the nighttime light values in unlit areas are all 0. Here, NTL data and World Settlement Footprint (WSF) data were combined to extract multidimensional luminous features that are also differential in unlit areas to estimate asset wealth in nighttime light-poor areas at 500 m × 500 m spatial units. A random forest model was used to estimate asset wealth, based on the shortest distance of settlements to three categories of lighted areas, along with the brightness values derived from the nearest lighted area and the settlements themselves. This model achieved an explanation of 71% for the variation in settlement asset wealth and demonstrated effectiveness in estimating the asset wealth of unlit areas. The MAE and RMSE of asset wealth estimation in the unlit clusters were 4.03 and 5.28, respectively. Asset wealth is generally low across most African settlements, with clear two-tier differentiation in Africa. In summary, the proposed method can extensively explore the luminous information in unlit areas.
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- 2024
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11. Neutrophil-to-lymphocyte ratio in type 2 diabetes patients combined with Lower Extremity Peripheral Artery Disease
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Li Li, Mengjie Wang, Ting Jia, Xiaowan Jiang, Fan Yang, Zhongjing Wang, and Xuyan Zhang
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type 2 diabetes mellitus ,lower extremity peripheral artery disease ,neutrophil-to-lymphocyte ratio ,angiography ,stenosis ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
ObjectiveThis study explored the utility of NLR (neutrophil-to-lymphocyte ratio) as a marker to predict Lower Extremity Peripheral Artery Disease (PAD) in the Chinese population, as well as to assess its consistency and diagnostic value with digital subtraction angiography.MethodsPatients were distributed into three groups according to the angiography in lower limb arterial: group L1, plaque with no stenosis; group L2, plaque with luminal stenosis and group L3, total vascular occlusion. Changes in the neutrophil-to-lymphocyte ratio were documented and compared among groups.ResultsCompared to group L1, NLR was significantly increased in L2 (1.76 vs 2.35, p=0.037) and L3 (1.76 vs 3.60, p70%) increased to 2.075 times for every 1 increase in NLR, while it was 46.8% for every 0.1 increase in ABI. The optimal NLR cut-off value to predict severe stenosis in PAD was 2.73. Receiver operating characteristic curve analysis of the inflammatory biomarkers and severe stenosis prediction displayed an area under the curve of 0.81.ConclusionNLR could serve as a new noninvasive and accurate marker in predicting PAD.
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- 2024
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12. Development and validation of a predictive model assessing the risk of sarcopenia in rheumatoid arthritis patients
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Yuan Qu, Lili Zhang, Yuan Liu, Yang Fu, Mengjie Wang, Chuanguo Liu, Xinyu Wang, Yakun Wan, Bing Xu, Qian Zhang, Yancun Li, and Ping Jiang
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rheumatoid arthritis ,sarcopenia ,risk prediction ,nomogram ,diagnosis ,Immunologic diseases. Allergy ,RC581-607 - Abstract
BackgroundSarcopenia is linked to an unfavorable prognosis in individuals with rheumatoid arthritis (RA). Early identification and treatment of sarcopenia are clinically significant. This study aimed to create and validate a nomogram for predicting sarcopenia risk in RA patients, providing clinicians with a reliable tool for the early identification of high-risk patients.MethodsPatients with RA diagnosed between August 2022 and January 2024 were included and randomized into training and validation sets in a 7:3 ratio. Least Absolute Shrinkage and Selection Operator (LASSO) regression analysis and multifactorial logistic regression analysis were used to screen the risk variables for RA-associated muscle loss and to create an RA sarcopenia risk score. The predictive performance and clinical utility of the risk model were evaluated by plotting the receiver operating characteristic curve and calculating the area under the curve (AUC), along with the calibration curve and clinical decision curve (DCA).ResultsA total of 480 patients with RA were included in the study (90% female, with the largest number in the 45–59 age group, about 50%). In this study, four variables (body mass index, disease duration, hemoglobin, and grip strength) were included to construct a nomogram for predicting RA sarcopenia. The training and validation set AUCs were 0.915 (95% CI: 0.8795–0.9498) and 0.907 (95% CI: 0.8552–0.9597), respectively, proving that the predictive model was well discriminated. The calibration curve showed that the predicted values of the model were basically in line with the actual values, demonstrating good calibration. The DCA indicated that almost the entire range of patients with RA can benefit from this novel prediction model, suggesting good clinical utility.ConclusionThis study developed and validated a nomogram prediction model to predict the risk of sarcopenia in RA patients. The model can assist clinicians in enhancing their ability to screen for RA sarcopenia, assess patient prognosis, make early decisions, and improve the quality of life for RA patients.
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- 2024
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13. SIPA1 promotes epithelial-mesenchymal transition in colorectal cancer through STAT3 activation
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Youjian Li, Mengjie Wang, Lu Jiang, Jiehong Jia, Fei Pan, Wen Li, Bochu Wang, PhD, Ke Huang, and Jie Luo
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SIPA1 ,CRC metastasis ,STAT3 ,EMT ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Colorectal cancer (CRC) is the third leading cancer type worldwide and accounts for the second highest rate of cancer-related mortality. Liver metastasis significantly contributes to the mortality associated with CRC, but the fundamental mechanisms behind it remain unclear. Signal-induced proliferation-associated protein 1 (SIPA1), a GTPase activating protein, has been shown to promote metastasis in breast cancer. In this study, our objective was to explore the role of SIPA1 in regulating epithelial-mesenchymal transition (EMT) in CRC. The analysis of The Cancer Genome Atlas (TCGA) database revealed that the expression level of SIPA1 mRNA was notably upregulated and exhibited a positively correlated with EMT and STAT3 signaling pathways in CRC. Knockdown of SIPA1 impairs CRC cell proliferation and migration. Further studies on the reliance of SIPA1 on STAT3 signaling for EMT regulation have shown that SIPA1 stimulates the activation of STAT3, resulting in its nuclear translocation. The co-treatment of overexpressed SIPA1 with the STAT3 inhibitor STTITA has shown that SIPA1 regulates the expression of EMT-related markers through STAT3. Our study indicate that SIPA1 promotes CRC metastasis by activating the STAT3 signaling pathway, underscoring the potential of SIPA1 as a therapeutic target for metastatic CRC patients.
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- 2024
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14. From bench to bedside: The promising value of exosomes in precision medicine for CNS tumors
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Mengjie Wang, Feng Jin, and Xiaoguang Tong
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CNS tumors ,Exosome ,Transit platforms ,Biotechnology ,Precision treatment ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Exosomes are naturally present extracellular vesicles (EVs) released into the surrounding body fluids upon the fusion of polycystic and plasma membranes. They facilitate intercellular communication by transporting DNA, mRNA, microRNA, long non-coding RNA, circular RNA, proteins, lipids, and nucleic acids. They contribute to the onset and progression of Central Nervous System (CNS) tumors. In addition, they can be used as biomarkers of tumor proliferation, migration, and blood vessel formation, thereby affecting the Tumor Microenvironment (TME). This paper reviews the recent advancements in the diagnosis and treatment of exosomes in various CNS tumors, the promise and challenges of exosomes as natural carriers of CNS tumors, and the therapeutic prospects of exosomes in CNS tumors. Furthermore, we hope this research can contribute to the development of more targeted and effective treatments for central nervous system tumors.
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- 2024
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15. Exosomal MicroRNAs: Biomarkers of moyamoya disease and involvement in vascular cytoskeleton reconstruction
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Mengjie Wang, Bin Zhang, Feng Jin, Genhua Li, Changmeng Cui, and Song Feng
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Moyamoya disease ,Exosomes ,microRNA ,Diagnosis ,Cytoskeleton reconstruction ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Moyamoya disease currently lacks a suitable method for early clinical screening.This study aimed to identify a simple and feasible clinical screening index by investigating microRNAs carried by peripheral blood exosomes. Experimental subjects participated in venous blood collection, and exosomes were isolated using Exquick-related technology. Sequencing was performed on the extracted exosomal ribonucleic acids (RNAs) to identify differential microRNAs. Verification of the results involved selecting relevant samples from the genetic database. The study successfully pinpointed a potential marker for early screening, hsa-miR-328-3p + hsa-miR-200c-3p carried by peripheral blood exosomes. Enrichment analysis of target genes revealed associations with intercellular junctions, impaired cytoskeletal regulation, and increased fibroblast proliferation, leading to bilateral internal carotid artery neointimal expansion and progressive stenosis. These findings establish the diagnostic value of hsa-miR-328-3p+hsa-miR-200c-3p in screening moyamoya disease, while also contributing to a deeper understanding of its underlying pathophysiology. Significant differences in microRNA expressions derived from peripheral blood exosomes were observed between moyamoya disease patients and control subjects. Consequently, the utilization of peripheral blood exosomes, specifically hsa-miR-328-3p + hsa-miR-200c-3p, holds potential for diagnostic screening purposes.
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- 2024
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16. Small target tea bud detection based on improved YOLOv5 in complex background
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Mengjie Wang, Yang Li, Hewei Meng, Zhiwei Chen, Zhiyong Gui, Yaping Li, and Chunwang Dong
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object detection ,deep information extraction ,lightweight ,MPDIoU ,YOLOv5 ,attention mechanism ,Plant culture ,SB1-1110 - Abstract
Tea bud detection is the first step in the precise picking of famous teas. Accurate and fast tea bud detection is crucial for achieving intelligent tea bud picking. However, existing detection methods still exhibit limitations in both detection accuracy and speed due to the intricate background of tea buds and their small size. This study uses YOLOv5 as the initial network and utilizes attention mechanism to obtain more detailed information about tea buds, reducing false detections and missed detections caused by different sizes of tea buds; The addition of Spatial Pyramid Pooling Fast (SPPF) in front of the head to better utilize the attention module’s ability to fuse information; Introducing the lightweight convolutional method Group Shuffle Convolution (GSConv) to ensure model efficiency without compromising accuracy; The Mean-Positional-Distance Intersection over Union (MPDIoU) can effectively accelerate model convergence and reduce the training time of the model. The experimental results demonstrate that our proposed method achieves precision (P), recall rate (R) and mean average precision (mAP) of 93.38%, 89.68%, and 95.73%, respectively. Compared with the baseline network, our proposed model’s P, R, and mAP have been improved by 3.26%, 11.43%, and 7.68%, respectively. Meanwhile, comparative analyses with other deep learning methods using the same dataset underscore the efficacy of our approach in terms of P, R, mAP, and model size. This method can accurately detect the tea bud area and provide theoretical research and technical support for subsequent tea picking.
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- 2024
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17. Adiponectin protects against myocardial ischemia–reperfusion injury: a systematic review and meta-analysis of preclinical animal studies
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Hongyi Yue, Qunhui Zhang, Senhao Chang, Xinjie Zhao, Mengjie Wang, and Wenhua Li
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Adiponectin ,Myocardial ischemia–reperfusion injury ,Apoptosis ,Oxidation ,Inflammation ,Animals ,Nutritional diseases. Deficiency diseases ,RC620-627 - Abstract
Abstract Background Myocardial ischemia–reperfusion injury (MIRI) is widespread in the treatment of ischemic heart disease, and its treatment options are currently limited. Adiponectin (APN) is an adipocytokine with cardioprotective properties; however, the mechanisms of APN in MIRI are unclear. Therefore, based on preclinical (animal model) evidence, the cardioprotective effects of APN and the underlying mechanisms were explored. Methods The literature was searched for the protective effect of APN on MIRI in six databases until 16 November 2023, and data were extracted according to selection criteria. The outcomes were the size of the myocardial necrosis area and hemodynamics. Markers of oxidation, apoptosis, and inflammation were secondary outcome indicators. The quality evaluation was performed using the animal study evaluation scale recommended by the Systematic Review Center for Laboratory animal Experimentation statement. Stata/MP 14.0 software was used for the summary analysis. Results In total, 20 papers with 426 animals were included in this study. The pooled analysis revealed that APN significantly reduced myocardial infarct size [weighted mean difference (WMD) = 16.67 (95% confidence interval (CI) = 13.18 to 20.16, P
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- 2024
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18. Transcriptome and metabolome analysis reveal the lip color variation in Cymbidium floribundum
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Shanhu Ma, Mengjie Wang, Peng Li, Liting Guo, Longwei Xiong, Yang Tian, Jinjin Li, Siren Lan, Zhongjian Liu, and Ye Ai
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cymbidium floribundum ,lip ,anthocyanin ,metabolome ,transcriptome ,Plant ecology ,QK900-989 ,Environmental effects of industries and plants ,TD194-195 - Abstract
Cymbidium floribundum is an ornamental plant with showy and colorful flowers. The color of its lip changes significantly after pollination. However, the mechanism of lip coloration remains unclear. In this study, the mechanism underlying lip color change in C. floribundum was investigated before and after pollination. Metabolome analysis detected 61 flavonoids in the lip, including 24 flavonoids, 13 flavonols, nine flavonoid carbonosides, eight anthocyanins, three flavanols, two isoflavones, one chalcone, and one dihydroflavone. Accumulation of peonidin 3-O-glucoside chloride, cyanin chloride, and cyanidin 3-O-malonylhexoside after pollination may be the key factors contributing to the change in lip color. Furthermore, transcriptome analysis identified 43 genes related to the anthocyanin biosynthesis pathway (ABP). Phylogenetic and co-expression analysis indicated that CfMYB1, CfMYB3, and CfMYB4 may be involved in the regulation of anthocyanin biosynthesis in the lips. Subcellular localization results showed that CfMYB1 was located in the nucleus, while CfMYB3 and CfMYB4 were located in the nucleus and cytoplasm. Further functional analysis verified that CfMYB1 could activate ABP genes and promote the synthesis and accumulation of anthocyanin, which may be the main transcription factors leading to the change of lip color in C. floribundum after pollination. These findings provide insight into the anthocyanin accumulation and coloration mechanisms during C. floribundum flower development. The results provide genetic resources and a theoretical basis for the improvement and breeding of flower color in C. floribundum.
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- 2024
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19. Exploring multimorbidity profiles in middle-aged inpatients: a network-based comparative study of China and the United Kingdom
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Yining Bao, Pengyi Lu, Mengjie Wang, Xueli Zhang, Aowei Song, Xiaoyun Gu, Ting Ma, Shu Su, Lin Wang, Xianwen Shang, Zhuoting Zhu, Yuhang Zhai, Mingguang He, Zengbin Li, Hanting Liu, Christopher K. Fairley, Jiangcun Yang, and Lei Zhang
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Multimorbidity ,Comorbidity ,Network analysis ,Middle-aged ,Inpatients ,China ,Medicine - Abstract
Abstract Background Multimorbidity is better prevented in younger ages than in older ages. This study aims to identify the differences in comorbidity patterns in middle-aged inpatients from China and the United Kingdom (UK). Methods We utilized 184,133 and 180,497 baseline hospitalization records in middle-aged populations (40–59 years) from Shaanxi, China, and UK Biobank. Logistic regression was used to calculate odds ratios and P values for 43,110 unique comorbidity patterns in Chinese inpatients and 21,026 unique comorbidity patterns in UK inpatients. We included the statistically significant (P values adjusted by Bonferroni correction) and common comorbidity patterns (the pattern with prevalence > 1/10,000 in each dataset) and employed network analysis to construct multimorbidity networks and compare feature differences in multimorbidity networks for Chinese and UK inpatients, respectively. We defined hub diseases as diseases having the top 10 highest number of unique comorbidity patterns in the multimorbidity network. Results We reported that 57.12% of Chinese inpatients had multimorbidity, substantially higher than 30.39% of UK inpatients. The complete multimorbidity network for Chinese inpatients consisted of 1367 comorbidities of 341 diseases and was 2.93 × more complex than that of 467 comorbidities of 215 diseases in the UK. In males, the complexity of the multimorbidity network in China was 2.69 × more than their UK counterparts, while the ratio was 2.63 × in females. Comorbidities associated with hub diseases represented 68.26% of comorbidity frequencies in the complete multimorbidity network in Chinese inpatients and 55.61% in UK inpatients. Essential hypertension, dyslipidemia, type 2 diabetes mellitus, and gastritis and duodenitis were the hub diseases in both populations. The Chinese inpatients consistently demonstrated a higher frequency of comorbidities related to circulatory and endocrine/nutritional/metabolic diseases. In the UK, aside from these comorbidities, comorbidities related to digestive and genitourinary diseases were also prevalent, particularly the latter among female inpatients. Conclusions Chinese inpatients exhibit higher multimorbidity prevalence and more complex networks compared to their UK counterparts. Multimorbidity with circulatory and endocrine/nutritional/metabolic diseases among both Chinese and UK inpatients necessitates tailored surveillance, prevention, and intervention approaches. Targeted interventions for digestive and genitourinary diseases are warranted for the UK.
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- 2023
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20. Design and Simulation of High-Performance D-Type Dual-Mode PCF-SPR Refractive Index Sensor Coated with Au-TiO2 Layer
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Xin Ding, Qiao Lin, Mengjie Wang, Shen Liu, Weiguan Zhang, Nan Chen, and Yiping Wang
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D-type photonic crystal fiber ,fundamental mode and second-order mode ,surface plasmon resonance ,refractive index sensor ,mid-infrared waveband ,Chemical technology ,TP1-1185 - Abstract
A novel surface plasmon resonance (SPR) refractive index (RI) sensor based on the D-type dual-mode photonic crystal fiber (PCF) is proposed. The sensor employs a side-polished few-mode PCF that facilitates the transmission of the fundamental and second-order modes, with an integrated microfluidic channel positioned directly above the fiber core. This design minimizes the distance to the analyte and maximizes the interaction between the optical field and the analyte, thereby enhancing the SPR effect and resonance loss for improved sensing performance. Au-TiO2 dual-layer material was coated on the surface of a microfluidic channel to enhance the penetration depth of the core evanescent field and tune the resonance wavelength to the near-infrared band, meeting the special needs of chemical and biomedical detection fields. The finite element method was utilized to systematically investigate the coupling characteristics between various modes and surface plasmon polariton (SPP) modes, as well as the impact of structural parameters on the sensor performance. The results indicate that the LP11b_y mode exhibits greater wavelength sensitivity than the HE11_y mode, with a maximum sensitivity of 33,000 nm/RIU and an average sensitivity of 8272.7 nm/RIU in the RI sensing range of 1.25–1.36, which is higher than the maximum sensitivity of 16,000 nm/RIU and average sensitivity of 5666.7 nm/RIU for the HE11b_y mode. It is believed that the proposed PCF-SPR sensor features both high sensitivity and high resolution, which will become a critical device for wide RI detection in mid-infrared fields.
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- 2024
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21. Recent advances on two-dimensional material-based nanosystems for gene delivery
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Mengjie Wang, Dan Li, Jiangtao Zhu, Junyu Liu, Yandong Yin, Yang Su, Chanyuan Jin, Juan Li, and Can Yang Zhang
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Biotechnology ,TP248.13-248.65 ,Physics ,QC1-999 - Abstract
Gene therapy has been extensively investigated and widely used in biomedical fields, such as cancer treatment. However, the most important issues for gene therapy are stability, targeting effect, transfection efficacy, and safety of gene formulation after administration, which seriously limit the further application of gene therapy in clinic. Therefore, gene delivery could be a promising strategy for overcoming these challenges. Two-dimensional (2D) materials are rising nanomaterials with excellent physical and chemical properties, including large specific surface area, easy modification, high conversion efficiency of light, and good biocompatibility, which have achieved promising applications as vehicles for gene delivery in the disease treatment. In this review, we first summarized the research progress of 2D material-based nanosystems for gene delivery to improve the therapeutic efficacy. We discussed that 2D material-based gene delivery nanosystems showed high therapeutic efficacy for many diseases treatment, especially cancer. Furthermore, we also proposed that surface modification of 2D materials might be a promising strategy to prepare multi-functional gene carriers for combination therapy with enhanced treatment efficacy. Finally, the future research progress, challenges, and prospects of 2D material-based nanosystems for gene therapy were discussed and concluded. Conclusively, we believe that 2D material-based nanosystems with good biocompatibility and high transfection efficiency would be potentially used in clinical settings to improve the therapeutic efficacy of gene therapy.
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- 2024
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22. New insights into the genetic loci related to egg weight and age at first egg traits in broiler breeder
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Xiaochun Ma, Fan Ying, Zhengda Li, Lu Bai, Mengjie Wang, Dan Zhu, Dawei Liu, Jie Wen, Guiping Zhao, and Ranran Liu
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egg weight ,age at first egg ,genome-wide association analysis ,meta analysis ,broiler breeder ,Animal culture ,SF1-1100 - Abstract
ABSTRACT: Egg weight (EW) and age at first egg (AFE) are economically important traits in breeder chicken production. The genetic basis of these traits, however, is far from understood, especially for broiler breeders. In this study, genetic parameter estimation, genome-wide association analysis, meta-analysis, and selective sweep analysis were carried out to identify genetic loci associated with EW and AFE in 6,842 broiler breeders. The study found that the heritability of EW ranged from 0.42 to 0.44, while the heritability of AFE was estimated at 0.33 in the maternal line. Meta-analysis and selective sweep analysis identified two colocalized regions on GGA4 that significantly influenced EW at 32 wk (EW32W) and at 43 wk (EW43W) with both paternal and maternal lines. The genes AR, YIPF6, and STARD8 were located within the significant region (GGA4: 366.86-575.50 kb), potentially affecting EW through the regulation of follicle development, cell proliferation, and lipid transfer etc. The promising genes LCORL and NCAPG were positioned within the significant region (GGA4:75.35-75.42 Mb), potentially influencing EW through pleiotropic effects on growth and development. Additionally, 3 significant regions were associated with AFE on chromosomes GGA7, GGA19, and GGA27. All of these factors affected the AFE by influencing ovarian development. In our study, the genomic information from both paternal and maternal lines was used to identify genetic regions associated with EW and AFE. Two genomic regions and eight genes were identified as the most likely candidates affecting EW and AFE. These findings contribute to a better understanding of the genetic basis of egg production traits in broiler breeders and provide new insights into future technology development.
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- 2024
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23. Identification and verification of AK4 as a protective immune-related biomarker in adipose-derived stem cells and breast cancer
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Wei Lu, Zhenyu Yang, Mengjie Wang, Shiqi Li, Hui Bi, and Xiaonan Yang
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Adipose-derived stem cell ,Breast cancer ,Fat grafting ,Adenylate kinase 4 ,Immune landscape ,Bioinformatics ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Background: Breast cancer (BC) remains the most common cancer among women, and novel post-surgical reconstruction techniques, including autologous fat transplantation, have emerged. While Adipose-derived stem cells (ADSCs) are known to impact the viability of fat grafts, their influence on breast cancer progression remains unclear. This study aims to elucidate the genetic interplay between ADSCs and breast cancer, focusing on potential therapeutic targets. Methods: Using the GEO and TCGA databases, we pinpointed differentially expressed (DE) mRNAs, miRNAs, lncRNAs, and pseudogenes of ADSCs and BC. We performed functional enrichment analysis and constructed protein-protein interaction (PPI), RNA binding protein (RBP)-pseudogene-mRNA, and lncRNA-miRNA-transcription factor (TF)-gene networks. Our study delved into the correlation of AK4 expression with 33 different malignancies and examined its impact on prognostic outcomes across a pan-cancer cohort. Additionally, we scrutinized immune infiltration, microsatellite instability, and tumor mutational burden, and conducted single-cell analysis to further understand the implications of AK4 expression. We identified novel sample subtypes based on hub genes using the ConsensusClusterPlus package and examined their association with immune infiltration. The random forest algorithm was used to screen DE mRNAs between subtypes to validate the powerful prognostic prediction ability of the artificial neural network. Results: Our analysis identified 395 DE mRNAs, 3 DE miRNAs, 84 DE lncRNAs, and 26 DE pseudogenes associated with ADSCs and BC. Of these, 173 mRNAs were commonly regulated in both ADSCs and breast cancer, and 222 exhibited differential regulation. The PPI, RBP-pseudogene-mRNA, and lncRNA-miRNA-TF-gene networks suggested AK4 as a key regulator. Our findings support AK4 as a promising immune-related therapeutic target for a wide range of malignancies. We identified 14 characteristic genes based on the AK4-related cluster using the random forest algorithm. Our artificial neural network yielded excellent diagnostic performance in the testing cohort with AUC values of 0.994, 0.973, and 0.995, indicating its ability to distinguish between breast cancer and non-breast cancer cases. Conclusions: Our research sheds light on the dual role of ADSCs in BC at the genetic level and identifies AK4 as a key protective mRNA in breast cancer. We found that AK4 significantly predicts cancer prognosis and immunotherapy, indicating its potential as a therapeutic target.
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- 2024
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24. Molecular identification and probiotic potential characterization of lactic acid bacteria isolated from the pigs with superior immune responses
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Wenjie Ma, Wenli Zhang, Xinrong Wang, Yu Pan, Mengjie Wang, Yunfei Xu, Junxin Gao, Hongyu Cui, Changwen Li, Hongyan Chen, He Zhang, Changyou Xia, and Yue Wang
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lactic acid bacteria ,immune responses ,probiotic characteristics ,safety assessment ,antimicrobial activity ,Microbiology ,QR1-502 - Abstract
Lactic acid bacteria (LAB) belong to a significant group of probiotic bacteria that provide hosts with considerable health benefits. Our previous study showed that pigs with abundant LAB had more robust immune responses in a vaccination experiment. In this study, 52 isolate strains were isolated from the pigs with superior immune responses. Out of these, 14 strains with higher antibacterial efficacy were chosen. We then assessed the probiotic features of the 14 LAB strains, including such as autoaggregation, coaggregation, acid resistance, bile salt resistance, and adhesion capability, as well as safety aspects such as antibiotic resistance, hemolytic activity, and the presence or absence of virulence factors. We also compared these properties with those of an opportunistic pathogen EB1 and two commercial probiotics (cLA and cLP). The results showed that most LAB isolates exhibited higher abilities of aggregation, acid and bile salt resistance, adhesion, and antibacterial activity than the two commercial probiotics. Out of the 14 strains, only LS1 and LS9 carried virulence genes and none had hemolytic activity. We selected three LAB strains (LA6, LR6 and LJ1) with superior probiotic properties and LS9 with a virulence gene for testing their safety in vivo. Strains EB1, cLA and cLP were also included as control bacteria. The results demonstrated that mice treated LAB did not exhibit any adverse effects on weight gain, organ index, blood immune cells, and ileum morphology, except for those treated with LS9 and EB1. Moreover, the antimicrobial effect of LR6 and LA6 strains was examined in vivo. The results indicated that these strains could mitigate the inflammatory response, reduce bacterial translocation, and alleviate liver, spleen, and ileum injury caused by Salmonella typhimurium infection. In addition, the LR6 treatment group showed better outcomes than the LA6 treatment group; treatment with LR6 substantially reduced the mortality rate in mice. The study results provide evidence of the probiotic properties of the LAB isolates, in particular LR6, and suggest that oral administration of LR6 could have valuable health-promoting benefits.
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- 2024
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25. Significantly improved interfacial and overall mechanical properties of aramid fiber/phenolic resin matrix composite reinforced with short CNT
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Mengjie Wang, Jianfang Yong, Lijuan Cai, Zhaojing Li, Yunfu Ou, Lingzhuang Zhu, Xiaosu Yi, and Dongsheng Mao
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Aramid fiber ,Phenolic resin ,Carbon nanotube reinforcement ,Interfacial ,Mechanical property ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Aramid fiber-phenolic matrix composite laminates reinforced with carbon nanotubes (CNT) were developed, and their interfacial and mechanical properties were systematically investigated. Results revealed that short length of the CNT (≤1 μm in average length) (Short CNT) was critical to the performance of the laminates. Long CNT (∼10 μm) cannot effectively improve the properties of the laminates. Excellent dispersion and functionalization of the CNT are also conduced to improve the properties. The laminates reinforced with 3.0 wt% of the short/carboxylic functionalized CNT (Short CNT-COOH) in the phenolic matrix showed improvements of 17.7%, 49.6% and 22.3% in tensile strength, modulus and flexural strength, respectively, as compared with the control sample without CNT. No obvious improvement of the properties was seen based on Long CNT reinforcement. The interfacial shear strength and the wettability between the single aramid fiber and the matrix were significantly improved with CNT reinforcement. A detailed analysis was performed and reported.
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- 2023
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26. Combined effect of microbially derived cecal SCFA and host genetics on feed efficiency in broiler chickens
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Zhengxiao He, Ranran Liu, Mengjie Wang, Qiao Wang, Jumei Zheng, Jiqiang Ding, Jie Wen, Alan G. Fahey, and Guiping Zhao
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Feed efficiency ,Cecal microbiota ,Genetic variations ,SCFAs ,Broiler ,Microbial ecology ,QR100-130 - Abstract
Abstract Background Improving feed efficiency is the most important goal for modern animal production. The regulatory mechanisms of controlling feed efficiency traits are extremely complex and include the functions related to host genetics and gut microbiota. Short-chain fatty acids (SCFAs), as significant metabolites of microbiota, could be used to refine the combined effect of host genetics and gut microbiota. However, the association of SCFAs with the gut microbiota and host genetics for regulating feed efficiency is far from understood. Results In this study, 464 broilers were housed for RFI measuring and examining the host genome sequence. And 300 broilers were examined for cecal microbial data and SCFA concentration. Genome-wide association studies (GWAS) showed that four out of seven SCFAs had significant associations with genome variants. One locus (chr4: 29414391–29417189), located near or inside the genes MAML3, SETD7, and MGST2, was significantly associated with propionate and had a modest effect on feed efficiency traits and the microbiota. The genetic effect of the top SNP explained 8.43% variance of propionate. Individuals with genotype AA had significantly different propionate concentrations (0.074 vs. 0.131 μg/mg), feed efficiency (FCR: 1.658 vs. 1.685), and relative abundance of 14 taxa compared to those with the GG genotype. Christensenellaceae and Christensenellaceae_R-7_group were associated with feed efficiency, propionate concentration, the top SNP genotypes, and lipid metabolism. Individuals with a higher cecal abundance of these taxa showed better feed efficiency and lower concentrations of caecal SCFAs. Conclusion Our study provides strong evidence of the pathway that host genome variants affect the cecal SCFA by influencing caecal microbiota and then regulating feed efficiency. The cecal taxa Christensenellaceae and Christensenellaceae_R-7_group were identified as representative taxa contributing to the combined effect of host genetics and SCFAs on chicken feed efficiency. These findings provided strong evidence of the combined effect of host genetics and gut microbial SCFAs in regulating feed efficiency traits. Video Abstract
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- 2023
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27. IFITM10 Enhance Tumor Angiogenesis and Promotes Cancer Progression through STAT3 Activation
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Youjian Li, Mengjie Wang, Xun Li, Jiehong Jia, Fei Pan, Wen Li, Zhongzhu Chen, Dianyong Tang, and Kepeng Ou
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colorectal cancer ,ifitm10 ,angiogenesis ,stat3 activation ,Biochemistry ,QD415-436 ,Biology (General) ,QH301-705.5 - Abstract
Background: Humankind have been struggling with colorectal cancer (CRC) for long period with its rapid progression and invasive metastasis. By hyperactivating IL-6/STAT3 signaling, CRC facilitates the capacity of angiogenesis to plunder massive nutrients and develops gradually under harsh condition. Methods: The Cancer Genome Atlas database was analyzed for acquiring interferon-γ inducible protein 10 (IFITM10) expression levels and their correlation with clinical outcomes. The cell angiogenic ability were assessed by Cell Counting Kit-8 (CCK-8) and tube formation assay. Immunofluorescence, Western blot, and enzyme-linked immunosorbent assay (ELISA) assay were using to assess potential mechanism. Results: In our study, we find that IFITM10 is upregulated in CRC and is positively related with tumor angiogenesis. We also find that IFITM inhibition decreased STAT3 phosphorylation level and IFITM10-mediated angiogenesis depends on STAT3 activation. Furthermore, our data suggests that IFITM10 may be a key prognostic biomarker in colorectal cancer. Conclusion: Together, our study suggests that IFITM10 enhance angiogenesis through STAT3 activation during CRC progression, which highlighting its potency as a therapeutic target for colorectal cancer.
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- 2024
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28. Relationship between aboveground biomass and environmental factors of typical karst secondary forest in Tianlong Mountain, central Guizhou
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Tianmu YE, Li RONG, Mengjie WANG, Xuan LI, Wensong YANG, and Qi WANG
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karst ,aboveground biomass ,soil thickness ,rock exposure rate ,slope ,Botany ,QK1-989 - Abstract
In order to explore the relationship between the aboveground biomass of karst secondary forest land and environmental factors, we took the typical secondary forest sample of karst Tianlong Mountain in Puding County, Central Guizhou as the research object, adopted the aboveground biomass model of single species and different diameter groups to calculate the biomass of dominant species and community, used the spatial distribution map to describe the spatial distribution of environmental factors and aboveground biomass of community, and used the correlation test (Pearson) General linear model (GLM) and redundancy analysis (RDA) to discuss the relationship between community, life form, species aboveground biomass and environmental factors. The results were as follows: (1) The total aboveground biomass of karst secondary forest group was 106.94 t·hm-2, and the aboveground biomass of dominant species accounted for 91.77% of the whole sample plot. The aboveground biomass of evergreen plants was higher than that of deciduous plants. The aboveground biomass of Lithocarpus confinis and Platycarya strobilacea accounted for the highest proportion in the community, 34.23% and 34.37% respectively. (2) The spatial distribution of rock exposure rate showed obvious upper and lower gradient difference, the upper slope was significantly greater than the lower slope, and the spatial distribution of slope and soil thickness was discontinuous and had no obvious law. (3) There was a significant positive correlation between aboveground biomass and soil thickness, and their spatial distribution tended to be consistent. Soil thickness was the main influencing factor of aboveground biomass of the community, and the influence of rock exposure rate and slope on aboveground biomass of the community was low. (4) For different life forms, the influence of rock exposure rate on aboveground biomass was the highest, and the influence of soil thickness and slope on evergreen plants was greater than that of defoliation. (5) For different species, the correlation between environmental factors and aboveground biomass was complex. Most species were positively correlated with soil thickness. Platycarya strobilacea and Zanthoxylum dimorphophyllum var. spinifolium were positively correlated with rock exposure rate and slope respectively. In conclusion, the vegetation restoration of secondary forest in the study area is slow, and soil thickness is the main influencing factor of aboveground biomass of the community. However, for different life forms and species, the response of aboveground biomass to the environment will be affected by biological factors such as life form differences, species habitat preferences and interspecific relationships.
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- 2023
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29. Properties and Microstructure of a Cement-Based Capillary Crystalline Waterproofing Grouting Material
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Mengjie Wang, Xiaohua Yang, Kunlong Zheng, and Rui Chen
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tunnel engineering ,grouting material ,capillary crystalline waterproofing material ,mix proportion design ,Building construction ,TH1-9745 - Abstract
Cement grout is traditionally used for treating water leakage distress in tunnels. However, traditional cement grout has the disadvantages of a poor anti-seepage performance, long setting time, and slow strength gain. To this end, a high-performance cement-based capillary crystalline waterproofing (CCCW) grouting material was synthesized using cement, capillary crystalline material, and several admixtures. The influences of the material proportions on the viscosity, bleeding rate, and setting time of the fresh grout, as well as the permeability coefficient of the grouted aggregate and the unconfined compression strength of the hardened grout material, were systematically studied. The mineralogy and microstructure of the CCCW grouting material were examined using X-ray diffraction, industrial computed tomography, and scanning electron microscopy. The results indicated that the capillary crystalline material PNC803 was not suitable for mixing with bentonite, sodium chloride, and triethanolamine in cementitious slurries, but it can produce excellent synergistic effects with sulfate, calcium chloride, and triisopropanolamine. An analysis of the microstructure of the CCCW grouting material showed that the PNC803 and additives can promote the hydration of cement, which yields more hydration products, sealing water passage and filling micro voids and therefore leading to enhanced waterproofing and strengthening effects. These research results could improve the applicability of CCCW material in tunnel engineering.
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- 2024
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30. Characterization of Rongchang piglets after infection with type 2 porcine reproductive and respiratory syndrome virus strains differing in pathogenicity
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Wenli Zhang, Wenjie Ma, Yu Pan, Xinrong Wang, Mengjie Wang, He Zhang, Junxin Gao, Hongliang Zhang, Zhijun Tian, Changwen Li, Hongyan Chen, Changyou Xia, and Yue Wang
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Rongchang pig ,PRRSV ,HuN4 ,SD53-1603 ,immune responses ,Microbiology ,QR1-502 - Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) affects the production and health of pigs and causes severe economic losses to the swine industry worldwide. Different pig breeds have been reported to have different levels of susceptibility to PRRSV, and different PRRSV strains may also influence the infectivity and pathogenicity of the virus. In this study, the susceptibility of Rongchang pigs (a prominent local pig breed in China) to PRRSV infection was thoroughly investigated. Rongchang piglets were exposed to two PRRSV strains: HuN4 (highly pathogenic PRRSV) and SD53-1603 (moderately virulent NADC30-like PRRSV). We observed that Rongchang pigs infected with HuN4 displayed significant clinical manifestations, including fever, reduced body weight, and interstitial pneumonia lesions. Routine blood tests revealed that HuN4-infected pigs exhibited slightly decreased levels of red blood cells, hemoglobin, reticulocytes, and a notable increase in monocytes than control pigs. Additionally, the Rongchang pigs exhibiting severe clinical signs presented a higher neutrophil-to-lymphocyte ratio and a lower lymphocyte-to-monocyte ratio. In contrast, SD53-1603 infection did not cause considerable harm to Rongchang pigs, only resulting in slightly elevated leukocytes and lymphocytes. Furthermore, these two PRRSV strains elicited divergent cytokine responses, such that SD53-1603 infection induced higher levels of TNF-α and IFN-γ, whereas HuN4 infection upregulated IL-1β. These dissimilarities in clinical symptoms, pathological changes, viremia, cytokine expression, and routine blood indices between HuN4 and SD53-1603 infections are critical in understanding the mechanisms of PRRSV infection and developing rational prevention and control strategies against PRRSV.
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- 2023
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31. Signaling pathways in macrophages: molecular mechanisms and therapeutic targets
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Ming Li, Mengjie Wang, Yuanjia Wen, Hongfei Zhang, Guang‐Nian Zhao, and Qinglei Gao
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diseases ,macrophage ,signaling pathway ,therapeutic targets ,Medicine - Abstract
Abstract Macrophages play diverse roles in development, homeostasis, and immunity. Accordingly, the dysfunction of macrophages is involved in the occurrence and progression of various diseases, such as coronavirus disease 2019 and atherosclerosis. The protective or pathogenic effect that macrophages exert in different conditions largely depends on their functional plasticity, which is regulated via signal transduction such as Janus kinase–signal transducer and activator of transcription, Wnt and Notch pathways, stimulated by environmental cues. Over the past few decades, the molecular mechanisms of signaling pathways in macrophages have been gradually elucidated, providing more alternative therapeutic targets for diseases treatment. Here, we provide an overview of the basic physiology of macrophages and expound the regulatory pathways within them. We also address the crucial role macrophages play in the pathogenesis of diseases, including autoimmune, neurodegenerative, metabolic, infectious diseases, and cancer, with a focus on advances in macrophage‐targeted strategies exploring modulation of components and regulators of signaling pathways. Last, we discuss the challenges and possible solutions of macrophage‐targeted therapy in clinical applications. We hope that this comprehensive review will provide directions for further research on therapeutic strategies targeting macrophage signaling pathways, which are promising to improve the efficacy of disease treatment.
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- 2023
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32. Spatiotemporal variations and source analysis of VOCs in the environmental air of a typical pesticide remediation site
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Xuwei Li, Da Ding, Wenyi Xie, Xuzhi Li, Mengjie Wang, Lingya Kong, Dengdeng Jiang, and Shaopo Deng
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volatile organic compound ,environmental air ,contribution rates ,source analysis ,emission sources ,Environmental sciences ,GE1-350 - Abstract
As efforts to mitigate soil and groundwater pollution intensify nationwide, the incidence of volatile organic compound (VOC) contaminated sites has risen significantly. These sites exhibit continuous release and dispersion of VOCs during and after remediation/control processes, thereby adversely affecting the local environment and residents. This issue has emerged as a prominent concern in contemporary society. This study takes a representative pesticide-contaminated site as the research subject. The pollutant levels, composition, spatiotemporal distribution, and source characteristics of VOCs in the ambient air environment from 2016 to 2021 were investigated by statistical analysis, Geographic Information System (GIS) spatial interpolation, Positive Matrix Factorization (PMF) model, and characteristic ratio source. The results showed that the average mass concentration proportions of the five types of pollutants are: benzene, toluene, ethylbenzene, and xylenes (BTEX) (29.73%) > alkanes (26.85%) > oxygenated hydrocarbons (21.96%) > halogenated hydrocarbons (19.12%) > sulfides (2.35%). M-/p-xylenes and toluene were the main contributing pollutants of BTEX and appeared frequently in the lists of top three pollutant in the contribution rates at various sites. The average concentration range of VOCs inside (EA1∼EA5) and outside the site (CK1∼CK4) were 810.71–1437.24 μg/m³, and 784.47–1358.16 μg/m³, respectively. The spatial distribution and variation trend in concentrations of halogenated hydrocarbons and alkanes were similar, with both being high in the middle of the site in 2017 and high in the south in 2018, and then sharply falling to a lower level in 2019. The source analysis results showed that the main contribution sources of environmental air varied over time. There were three types of emission sources for VOCs during the monitoring periods in 2016 and 2018. The maximum contributions to total volatile organic compounds (TVOCs) in 2016 and 2018 were volatile sources of characteristic pollutants within the site (45.6%) and volatile source of fuel (70.6%), respectively. This study provides scientific evidence for the environmental management, planning, and VOCs pollution control of pesticide-contaminated sites in China.
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- 2023
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33. Brain nuclear receptors and cardiovascular function
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Mengjie Wang, Yongjie Yang, and Yong Xu
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Nuclear receptor ,Central nervous system ,Cardiovascular function ,Brain–heart interaction ,Biotechnology ,TP248.13-248.65 ,Biology (General) ,QH301-705.5 ,Biochemistry ,QD415-436 - Abstract
Abstract Brain–heart interaction has raised up increasing attentions. Nuclear receptors (NRs) are abundantly expressed in the brain, and emerging evidence indicates that a number of these brain NRs regulate multiple aspects of cardiovascular diseases (CVDs), including hypertension, heart failure, atherosclerosis, etc. In this review, we will elaborate recent findings that have established the physiological relevance of brain NRs in the context of cardiovascular function. In addition, we will discuss the currently available evidence regarding the distinct neuronal populations that respond to brain NRs in the cardiovascular control. These findings suggest connections between cardiac control and brain dynamics through NR signaling, which may lead to novel tools for the treatment of pathological changes in the CVDs.
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- 2023
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34. Wire-based laser directed energy deposition of AA7075: effect of process parameters on microstructure and mechanical properties
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Mengjie Wang, Volker Ventzke, and Nikolai Kashaev
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Laser directed energy deposition ,AA7075 wire ,Process development ,Mechanical properties ,Microstructure ,Temperature field simulation ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The process development for wire-based laser directed energy deposition of AA7075 is studied. Thin-wall structures are produced to investigate the process-microstructure-mechanical performance relationship. By optimizing the process parameters and building strategies, the minimal porosity level of 0.8% and 0.3% can be achieved in the continuous and discontinuous building strategies, respectively. The porosity level exhibits a primary dependence on the specific energy and a secondary dependence on the ratio between wire feed rate and laser scan speed. Thin-wall structures show an average hardness of 115 HV0.1. In two optimized building strategies, the ultimate tensile strength of 400 MPa is achieved without the cost of ductility (fracture strain of 9.2%). Large columnar grains with preferential orientation and the distribution of secondary phases relative to the loading direction during tensile tests contribute to superior mechanical properties.
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- 2022
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35. Effect of sponge city construction on urban waterlogging reduction in semi-humid areas of China
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Mengjie Wang, Yiyun Lu, and Xiaoyu Ge
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attached green space ,lid system ,semi-humid area ,sponge city ,urban waterlogging ,Environmental technology. Sanitary engineering ,TD1-1066 ,Environmental sciences ,GE1-350 - Abstract
Urban waterlogging frequently occurs in semi-humid areas due to the short duration of heavy rainfall in summer and the high rates of subsurface hardening caused by high-intensity urban development. To solve the problem of urban waterlogging, China has launched the construction of ‘sponge cities’ and made some progress, but there is still a lack of comprehensive consideration of the functional types and spatial layout of low impact development (LID) facilities. Qian'an, a city of Hebei Province, is one of the first sponge city pilot cities in China. This paper focuses on Yanshan South Road and its surrounding areas, a historical waterlogging section of Qian'an city. Four common LID measures (sunken green space (SG), bioretention ponds (BP), infiltration ponds (IP), and reservoirs (RE)) in two function types are selected and combined through centralized (CE) and decentralized (DE) different spatial layouts, a total of 80 design scenarios are proposed. Then, using the storm water management model (SWMM) to calculate the effect of each scheme on peak flow reduction under different rainfall return periods. The results showed that all LID scenarios can effectively alleviate the urban waterlogging problem, among which the schemes of DE-SG-BP (1:1), DE-IP-SG (1:1), DE-SG-IP (3:1), DE-SG-IP (1:3), and DE-SG-BP (3:1) had the highest peak flow reduction rate, up to 95.46%. The schemes of CE-RE-IP (3:1) and CE-IP-RE (3:1) had better hydrological performance in occupying less surface space, with a peak flow reduction rate of 8.68% per square meter. Therefore, the distributed layout combined with infiltration LID facilities and storage LID facilities can be used in urban built-up areas with limited land use conditions, which has a more obvious effect on reducing waterlogging. HIGHLIGHTS On the premise of mastering detailed basic information, integrate spatial morphological thinking.; Expand the research to the whole catchment area and mix various land use types in the city.; Eighty design scenarios are analyzed and compared.; The flood peak flow of different LID schemes under different return periods is analyzed and compared.; To provide a reference for the design of rainfall-type attached green space.;
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- 2022
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36. SK3 in POMC neurons plays a sexually dimorphic role in energy and glucose homeostasis
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Meng Yu, Jonathan C. Bean, Hailan Liu, Yang He, Yongjie Yang, Xing Cai, Kaifan Yu, Zhou Pei, Hesong Liu, Longlong Tu, Kristine M. Conde, Mengjie Wang, Yongxiang Li, Na Yin, Nan Zhang, Junying Han, Nikolas A. Scarcelli, Pingwen Xu, Yanlin He, Yong Xu, and Chunmei Wang
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POMC neurons ,SK current ,Sexually dimorphism ,Energy and glucose homeostasis ,Biotechnology ,TP248.13-248.65 ,Biology (General) ,QH301-705.5 ,Biochemistry ,QD415-436 - Abstract
Abstract Background Pro-opiomelanocortin (POMC) neurons play a sexually dimorphic role in body weight and glucose balance. However, the mechanisms for the sex differences in POMC neuron functions are not fully understood. Results We detected small conductance calcium-activated potassium (SK) current in POMC neurons. Secondary analysis of published single-cell RNA-Seq data showed that POMC neurons abundantly express SK3, one SK channel subunit. To test whether SK3 in POMC neurons regulates POMC neuron functions on energy and glucose homeostasis, we used a Cre-loxP strategy to delete SK3 specifically from mature POMC neurons. POMC-specific deletion of SK3 did not affect body weight in either male or female mice. Interestingly, male mutant mice showed not only decreased food intake but also decreased physical activity, resulting in unchanged body weight. Further, POMC-specific SK3 deficiency impaired glucose balance specifically in female mice but not in male mice. Finally, no sex differences were detected in the expression of SK3 and SK current in total POMC neurons. However, we found higher SK current but lower SK3 positive neuron population in male POMC neurons co-expressing estrogen receptor α (ERα) compared to that in females. Conclusion These results revealed a sexually dimorphic role of SK3 in POMC neurons in both energy and glucose homeostasis independent of body weight control, which was associated with the sex difference of SK current in a subpopulation of POMC + ERα + neurons.
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- 2022
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37. China’s poverty assessment and analysis under the framework of the UN SDGs based on multisource remote sensing data
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Mengjie Wang, Yanjun Wang, Fei Teng, Shaochun Li, Yunhao Lin, and Hengfan Cai
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Multisource remote sensing data ,Sustainable Development Goals (SDGs) ,poverty indicator system ,partial least squares ,machine learning ,Mathematical geography. Cartography ,GA1-1776 ,Geodesy ,QB275-343 - Abstract
Poverty has always been a global concern that has restricted human development. The first goal (SDG 1) of the United Nations Sustainable Development Goals (SDGs) is to eliminate all forms of poverty all over the world. The establishment of a scientific and effective localized SDG 1 evaluation and monitoring method is the key to achieving SDG 1. This paper proposes SDG 1 China district and county-level localization evaluation method based on multi-source remote sensing data for the United Nations Sustainable Development Framework. The temporal and spatial distribution characteristics of China’s poverty areas and their SDG 1 evaluation values in 2012, 2014, 2016, and 2018 have been analyzed. Based on the SDGs global indicator framework, this paper first constructed SDG 1 China’s district and county localization indicator system and then extracted multidimensional feature factors from nighttime light images, land cover data, and digital elevation model data. Secondly, we establish SDG 1 China’s localized partial least squares estimation model and SDG 1 China’s localized machine learning estimation model. Finally, we analyze and verify the spatiotemporal distribution characteristics of China’s poverty areas and counties and their SDG 1 evaluation values. The results show that SDG 1 China’s district and county localization indicator system proposed in this study and SDG 1 China’s localized partial least squares estimation model can better reflect the poverty level of China’s districts and counties. The estimated model R2 is 0.65, which can identify 72.77% of China’s national poverty counties. From 2012 to 2018, the spatial distribution pattern of SDG evaluation values in China’s districts and counties is that the SDG evaluation values gradually increase from western China to eastern China. In addition, the average SDG 1 evaluation value of China’s districts and counties increased by 23% from 2012 to 2018. This paper is oriented to the United Nations SDGs framework, explores the SDG 1 localized evaluation method of China’s districts and counties based on multisource remote sensing data, and provides a scientific and rapid regional poverty monitoring and evaluation program for the implementation of the 2030 agenda poverty alleviation goals.
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- 2022
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38. Corrigendum: A heterozygous mutation in NOTCH3 in a Chinese family with CADASIL
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Juyi Li, Tao Luo, Xiufang Wang, Mengjie Wang, Tao Zheng, Xiao Dang, Aiping Deng, Youzhi Zhang, Sheng Ding, Ping Jing, and Lin Zhu
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CADASIL ,whole-exome-sequencing ,heterozygous ,Notch3 ,treatment scheme ,Genetics ,QH426-470 - Published
- 2023
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39. Editorial: Optics and machine vision for marine observation
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Hong Song, Syed Raza Mehdi, Mengjie Wang, Ran Liao, Rizwan Ali Naqvi, and Surui Xie
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underwater optics ,underwater imaging ,image enhancement ,image processing ,machine learning ,marine observation ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Published
- 2023
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40. Anoctamin 4 channel currents activate glucose-inhibited neurons in the mouse ventromedial hypothalamus during hypoglycemia
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Longlong Tu, Jonathan C. Bean, Yang He, Hailan Liu, Meng Yu, Hesong Liu, Nan Zhang, Na Yin, Junying Han, Nikolas A. Scarcelli, Kristine M. Conde, Mengjie Wang, Yongxiang Li, Bing Feng, Peiyu Gao, Zhao-Lin Cai, Makoto Fukuda, Mingshan Xue, Qingchun Tong, Yongjie Yang, Lan Liao, Jianming Xu, Chunmei Wang, Yanlin He, and Yong Xu
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Neuroscience ,Medicine - Abstract
Glucose is the basic fuel essential for maintenance of viability and functionality of all cells. However, some neurons — namely, glucose-inhibited (GI) neurons — paradoxically increase their firing activity in low-glucose conditions and decrease that activity in high-glucose conditions. The ionic mechanisms mediating electric responses of GI neurons to glucose fluctuations remain unclear. Here, we showed that currents mediated by the anoctamin 4 (Ano4) channel are only detected in GI neurons in the ventromedial hypothalamic nucleus (VMH) and are functionally required for their activation in response to low glucose. Genetic disruption of the Ano4 gene in VMH neurons reduced blood glucose and impaired counterregulatory responses during hypoglycemia in mice. Activation of VMHAno4 neurons increased food intake and blood glucose, while chronic inhibition of VMHAno4 neurons ameliorated hyperglycemia in a type 1 diabetic mouse model. Finally, we showed that VMHAno4 neurons represent a unique orexigenic VMH population and transmit a positive valence, while stimulation of neurons that do not express Ano4 in the VMH (VMHnon-Ano4) suppress feeding and transmit a negative valence. Together, our results indicate that the Ano4 channel and VMHAno4 neurons are potential therapeutic targets for human diseases with abnormal feeding behavior or glucose imbalance.
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- 2023
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41. Holographic entanglement entropy and subregion complexity for excited states of holographic superconductors
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Dong Wang, Xiongying Qiao, Mengjie Wang, Qiyuan Pan, Chuyu Lai, and Jiliang Jing
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Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
We investigate the holographic entanglement entropy (HEE) and the holographic subregion complexity (HSC) for holographic superconductors, both in the Einstein and in the Einstein-Gauss-Bonnet gravitational theories. For both ground and excited states, we show that, in the Einstein gravity, the HSC decreases as the temperature increases and the normal phase has a smaller HSC than the superconducting phase, which is opposite to the behavior of the HEE. Moreover, we find out that, for a given temperature T in the superconducting phase, the higher excited state leads to a lager value of the HEE but a smaller value of the HSC. However, the Einstein-Gauss-Bonnet gravity has significantly different effect on the HSC, while the HEE always increases monotonously as the temperature increases and its value in the normal phase always larger than that in the superconducting phase. Our results indicate that the HEE and HSC provide richer physics in phase transitions and condensation of scalar hair for holographic superconductors with excited states.
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- 2023
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42. Thiophene/selenophene-based S-shaped double helicenes: regioselective synthesis and structures
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Mengjie Wang, Lanping Dang, Wan Xu, Zhiying Ma, Liuliu Shao, Guangxia Wang, Chunli Li, and Hua Wang
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crystal structure ,double helicene ,regioselective synthesis ,selenophene ,thiophene ,Science ,Organic chemistry ,QD241-441 - Abstract
2,5-Di(trimethylsilanyl)dithieno[2,3-b:3′,2′-d]thiophene ((TMS)2-bb-DTT), 2,5-di(trimethylsilanyl)diseleno[2,3-b:3′,2′-d]thiophene ((TMS)2-bb-DST), and 2,5-di(trimethylsilanyl)diseleno[2,3-b:3′,2′-d] selenophene ((TMS)2-bb-DSS) were used as starting materials to synthesize three S-shaped double helicenes (i.e., DH-1, DH-2, and DH-3) through monobromination, formylation, the Wittig reaction, and double oxidative photocyclization. The photocyclization was a highly regioselective process. The molecular structures of DH-1 and DH-2 were confirmed by X-ray single-crystal analysis. Multiple intermolecular interactions, such as C–S, C–Se, S–S, S–Se, and Se–Se, were observed in the crystal packing structures of these compounds. Spectroscopic results and our previous work showed that the combination of molecular structure change and heteroatom replacement from S to Se could precisely modulate molecular energy levels.
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- 2022
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43. MF-SRCDNet: Multi-feature fusion super-resolution building change detection framework for multi-sensor high-resolution remote sensing imagery
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Shaochun Li, Yanjun Wang, Hengfan Cai, Yunhao Lin, Mengjie Wang, and Fei Teng
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Multi-sensor ,Super-resolution ,Multi-feature fusion ,Building change detection ,Deep learning ,Physical geography ,GB3-5030 ,Environmental sciences ,GE1-350 - Abstract
Building change detection is essential for evaluating land use, land cover change, and sustainable development. However, owing to the mismatched resolutions from multi-sensors and the complexity of the features of high-resolution images, traditional methods of building change detection have problems with accuracy and applicability. In this study, we propose a deep-learning-based multi-feature fusion super-resolution building change detection framework (MF-SRCDNet), comprising super-resolution (SR), multi-feature fusion, and change detection (CD) modules. The SR module introduces a Res-UNet network to generate unified SR images with rich semantic information. To enhance the performance of MF-SRCDNet for complex building detection, an effective right-angle edge vision feature was designed and fused with a CD module with an improved feature extractor. The proposed method achieved the highest F1 values of 0.881, 0.857, and 0.964 for the three datasets, respectively, compared with different modules. The results also show improved robustness in different bi-temporal image resolution scale-difference experiments. The method proposed in this study can be applied to a variety of complex scenarios for building CD tasks with strong model generalization.
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- 2023
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44. Vaccinating women previously treated for human papillomavirus-related cervical precancerous lesions is highly cost-effective in China
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Maosheng Zou, Hanting Liu, Huan Liu, Mengjie Wang, Zhuoru Zou, and Lei Zhang
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health economics (cost-effectiveness analysis) ,HPV vaccination ,cervical precancerous lesions ,women ,healthcare provider ,Immunologic diseases. Allergy ,RC581-607 - Abstract
BackgroundThe 2021 Chinese Expert Consensus on the Clinical Application of the Human Papillomavirus (HPV) Vaccine recommended vaccination for women who previously received ablative or excisional treatment for high-grade squamous intraepithelial lesion (HSIL). This study evaluates the cost-effectiveness of HPV vaccination in women previously treated for cervical precancerous lesions.MethodsWe used a Markov model to simulate the disease progression of both low- and high-risk HPV subtypes. We followed a cohort of 100,000 women aged 18-45 years who received treatment for cervical precancerous lesions for a lifetime (80 years). We used the Incremental Cost-Effectiveness Ratios (ICER) with a 5% discount rate to measure the cost-effectiveness of nine vaccination strategies, including a combination of HPV bivalent (HPV-2), quadrivalent (HPV-4) and nonavalent vaccine (HPV-9), each with three vaccination doses (one-, two- and three-dose). We conducted one-way sensitivity analysis and probabilistic sensitivity analysis. We followed the CHEERS 2022 guidelines.ResultsCompared to the status quo, the nine vaccination strategies would result in $3.057-33.124 million incremental cost and 94-1,211 incremental quality-adjusted life-years (QALYs) in 100,000 women previously treated for cervical precancerous lesions. Three vaccination strategies were identified on the cost-effectiveness frontier. In particular, ICER for one-dose HPV-4 vaccination was US$10,025/QALY compared to the status quo (no vaccination); ICER for two-dose HPV-4 vaccination was US$17,641//QALY gained compared to one-dose HPV-4 vaccination; ICER for three-dose HPV-4 vaccination was US$27,785/QALY gained compared with two-dose HPV-4 vaccination. With a willingness-to-pay of three times gross domestic product per capita (US$37655), three-dose HPV-4 vaccination was the most cost-effective vaccination strategy compared with the lower-cost non-dominated strategy on the cost-effectiveness frontier. A probabilistic sensitivity analysis confirmed a 99.1% probability of being cost-effective. If the cost of the HPV-9 is reduced to 50% of the current price, three-dose HPV-9 vaccination would become the most cost-effective strategy.DiscussionThree-dose HPV-4 vaccination is the most cost-effective vaccination strategy for women treated for precancerous cervical lesions in the Chinese setting.
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- 2023
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45. Investigating the rate of turbidity impact on underwater spectral reflectance detection
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Hong Song, Syed Raza Mehdi, Zixin Li, Mengjie Wang, Chaopeng Wu, Vladimir Yu Venediktov, and Hui Huang
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spectral reflectance ,spectral imaging ,turbidity ,spectral detection ,liquid crystal tunable filters ,spectral features ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Spectral reflectance detection of the targeted object is considered a vital inherent optical property for its potential to provide abundant spectral information, which is crucial in underwater spectral imaging. However, the coarse condition of the underwater environment due to turbidity causes extreme distortions in spectral reflectance detection due to the high absorption and scattering of light. To cope with the effects of light degradation on underwater spectral reflectance detection accuracy, the rate of the impacts of turbidity on spectral reflectance should be examined thoroughly. Therefore, we utilize a stare-type underwater spectral imaging system based on a liquid crystal tunable filter (LCTF) to study the effects of turbidity in underwater spectral imaging of various colored bodies. To examine the accuracy of underwater spectral reflectance detection based on escalating turbidity, the paper models the rate of increase in scattering intensity of the water body. Results show that, based on the non-linear increase in the pixel response of the black and white board, the rapid upsurge in scattering intensity occurs between 400nm to 500nm at different turbidity levels. Additionally, the spectral reconstruction of color bodies relative to the black and white board shows the maximum absolute deviation of 5.3% in spectral reflectance detection accuracy under varying turbidity. While employing underwater spectral imaging, the above findings of optimal band selection can find significant applications to improve the quality of underwater object detection.
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- 2023
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46. Hydrodynamic cavitation-assisted preparation of porous carbon from garlic peels for supercapacitors
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Xiaoxu Xuan, Mengjie Wang, Weibin You, Sivakumar Manickam, Yang Tao, Joon Yong Yoon, and Xun Sun
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Supercapacitor ,Hydrodynamic cavitation ,Process intensification ,Porous biomass carbon ,Electricity storage ,Chemistry ,QD1-999 ,Acoustics. Sound ,QC221-246 - Abstract
Hydrodynamic cavitation (HC), which can effectively induce sonochemical effects, is widely considered a promising process intensification technology. In the present study, HC was successfully utilized to intensify the alkali activation of GPs for SCs, for the first time. Five BDCMs were synthesized following the method reported in the literature. For comparison, four more BDCMs with HC-treated, among which a sample was further doped with nitrogen during the HC treatment, were prepared. Then all the samples were compared from microscopical characteristics to electrochemical performance as SCs materials. The morphology study demonstrated that the HC treatment had created many defects and amorphous carbon structures on the GP-based BDCMs, with the highest SSA reaching 3272 m2/g (1:6-HCGP), which 32 folded that of the Raw carbon sample’s. The HC treatment also intensified the N-doping process. XRD and XPS results manifested that the N content had been increased and consequently changed the electronic structure of the carbon atoms, leading to the increase of specific capacitance (1:6-HCGP+N-based SC, 227 F/g at 10 A/g). The cycle performance proved that the GP-based BDCMs have long-term stability, indicating that the HC-treated BDCMs were good choices for energy storage technologies. Compared with the ultrasound-assisted method, which may have a high energy density, the HC-assisted method enables high production and energy efficiency. This work is a first time attempt towards the industrial application of HC method in energy-related materials synthesis and encourages more in-depth studies in the future.
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- 2023
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47. An Analysis of the Spatial Characteristics and Transport Fluxes of BTEX in Soil and Atmospheric Phases at a Decommissioned Steel Mill Site in China with a Long History
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Xuwei Li, Wenyi Xie, Da Ding, Mengjie Wang, Lingya Kong, Dengdeng Jiang, and Shaopo Deng
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correlation ,transport flux ,non-carcinogenic risk ,carcinogenic risk ,Chemical technology ,TP1-1185 - Abstract
BTEX (benzene, toluene, ethylbenzene, and xylene), as characteristic pollutants in chemical plant sites, are widely present in the environment and pose a serious threat to the health and safety of nearby residents. Studying the spatial distribution characteristics and transport fluxes of BTEX in soil and air at contaminated sites and the health risks they pose to humans is of great significance for fine pollution control and environmental management. This study took a typical decommissioned steel plant as a case study. A total of 23 soil and air samples were collected from different locations to investigate the spatial distribution characteristics of BTEX in soil and air. The transport and fate of BTEX in soil and air were evaluated using the fugacity model, and finally, a human health risk assessment was conducted. The results indicate a relatively severe level of benzene pollution in both soil and air. The maximum exceedance factor of benzene in soil samples is 31.5, with the concentration exceedance depth at 1.5 m. The maximum concentration of benzene in air samples is 4.98 μg·m−3. Benzene, at 5.9% of the site, shows a low flux with negative values, while other components at various locations all exhibit a trend of transport from the soil phase to the atmospheric phase. Benzene is the pollutant that contributes the most to the transport flux from soil to air within the site. The coking area and sewage treatment area are key areas within the steel mill where BTEX accumulate easily in the soil. The non-carcinogenic risk values of the individual components of BTEX in the soil are below the acceptable risk level. However, the carcinogenic risk value of benzene in the children’s exposure scenario exceeds the carcinogenic risk level of 10−6. The carcinogenic risk range of various components of BTEX in the air is 2.63 × 10−6~3.88 × 10−5, with 28.6% of the locations exceeding the threshold of 10−6. The range of the total HI (hazard index) is 2.08 × 10−4~1.81 × 10−1, all of which is below the safety threshold of 1. The results of this study will provide scientific support for the fine pollution control and environmental management of industrial contaminated sites with BTEX as their typical pollutants.
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- 2023
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48. Identification of key genes associated with polycystic ovary syndrome (PCOS) and ovarian cancer using an integrated bioinformatics analysis
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Juan Zou, Yukun Li, Nianchun Liao, Jue Liu, Qunfeng Zhang, Min Luo, Jiao Xiao, Yanhua Chen, Mengjie Wang, Kexin Chen, Juan Zeng, and Zhongcheng Mo
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Ovarian cancer ,Polycystic ovary syndrome ,Bioinformatic analysis ,OGN ,Prognostic marker ,Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Background Accumulating evidence suggests a strong association between polycystic ovary syndrome (PCOS) and ovarian cancer (OC), but the potential molecular mechanism remains unclear. In this study, we identified previously unrecognized genes that are significantly correlated with PCOS and OC via bioinformatics. Materials and methods Multiple bioinformatic analyses, such as differential expression analysis, univariate Cox analysis, functional and pathway enrichment analysis, protein–protein interaction (PPI) network construction, survival analysis, and immune infiltration analysis, were utilized. We further evaluated the effect of OGN on FSHR expression via immunofluorescence. Results TCGA-OC, GSE140082 (for OC) and GSE34526 (for PCOS) datasets were downloaded. Twelve genes, including RNF144B, LPAR3, CRISPLD2, JCHAIN, OR7E14P, IL27RA, PTPRD, STAT1, NR4A1, OGN, GALNT6 and CXCL11, were identified as signature genes. Drug sensitivity analysis showed that OGN might represent a hub gene in the progression of PCOS and OC. Experimental analysis found that OGN could increase FSHR expression, indicating that OGN could regulate the hormonal response in PCOS and OC. Furthermore, correlation analysis indicated that OGN function might be closely related to m6A and ferroptosis. Conclusions Our study identified a 12-gene signature that might be involved in the prognostic significance of OC. Furthermore, the hub gene OGN represent a significant gene involved in OC and PCOS progression by regulating the hormonal response.
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- 2022
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49. Differential mRNA and long noncoding RNA expression profiles in pediatric B-cell acute lymphoblastic leukemia patients
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Jing Xia, Mengjie Wang, Yi Zhu, Chaozhi Bu, and Tianyu Li
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Acute lymphoblastic leukemia ,Long non-coding RNA ,mRNA ,Next generation sequencing ,Transcriptome network ,Pediatrics ,RJ1-570 - Abstract
Abstract Background Long non-coding RNAs (lncRNAs) are transcripts longer than 200 nucleotides (nt) that are involved in the pathogenesis and development of various cancers including B cell acute lymphoblastic leukemia (B–ALL). To determine the potential roles of lncRNAs involved in pathogenesis of B-ALL, we analyzed the expression profile of lncRNAs and mRNAs in B-ALL, respectively, and constructed lncRNAs/mRNAs interaction network. Methods We performed RNA sequencing of 10 non-leukemic blood disease donors and 10 B-ALL patients for Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. Interactions among mRNAs were predicted using the STRING database. Quantitative real time PCR (qRT-PCR) was performed to verify the RNA-seq data of lncRNAs and mRNAs. Potential functions of subtype-specific lncRNAs were determined by using coexpression-based analysis on distally (trans-pattern) located protein-coding genes. Results A total of 1813 differentially expressed transcripts (DETs) and 2203 lncRNAs were identified. Moreover, 10 dysregulated lncRNAs and 10 mRNAs were randomly selected, and further assessed by RT-qPCR in vitro. Go and KEGG analysis demonstrated that the differentially expressed mRNAs were most closely associated with myeloid leukocyte activation and in transcriptional misregulation in cancer, respectively. In addition, co-expression analysis demonstrated that these lncRNAs, including MSTRG.27994.3, MSTRG.21740.1, ENST00000456341, MSTRG.14224.1 and MSTRG.20153.1, may mediate the pathogenesis and development of B-ALL via lncRNA-mRNA network interactions. Conclusions These results showed that several mRNAs and lncRNAs are aberrantly expressed in the bone marrow of B-ALL patients and play potential roles in B-ALL development, and be useful for diagnostic and/or prognostic purposes in pediatric B–ALL. Data availability The datasets used during our study are available through HARVARD Dataverse Persistent ID doi: https://doi.org/10.7910/DVN/LK9T4Z .
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- 2022
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50. Noise Point Detection From Airborne LiDAR Point Cloud Based on Spatial Hierarchical Directional Relationship
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Yunhao Lin, Yanjun Wang, Shuhan Wang, Shaochun Li, Mengjie Wang, Hengfan Cai, and Fei Teng
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Airborne LiDAR ,aerial laser scanning ,point cloud noise ,noise detection ,hierarchical direction ,region growing ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
In three-dimensional (3D) airborne light detection and ranging (LiDAR) point-cloud data acquisition, noise point clusters (such as cloud, birds and incomplete scanning ground points) and isolated points are usually generated in the scanning process. Detection and elimination of these noise points directly affect the subsequent processing efficiency of the LiDAR point clouds. In this paper, a noise detection method from airborne LiDAR data based on spatial hierarchical directional relationship and region growing algorithm is proposed. First, the original airborne LiDAR points are divided into regular 3D grids, and the maximum point density unit is searched adaptively to select the initial surface seed points for region growing algorithm. Then, the spherical neighborhood is constructed with the initial seed point as the center, and fourteen main growth directions are generated based on the 3D space topology. Second, candidate seed points in each main direction are determined by the distance threshold. Finally, all LiDAR points are iteratively executed using candidate seed points as new region growing seed points. This paper selects two mountain terrain scenes with different cloud contents as the study area, and the precision, recall rates and F1-score of the proposed method reach 99.8%, 100% and 99.3%, respectively. This method can detect point-cloud clusters and isolated points, thus simplifying the LiDAR point clouds, providing basic support for the subsequent accurate data processing and analysis.
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- 2022
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