170 results on '"Ji Nan"'
Search Results
2. Discovery of KT-474a Potent, Selective, and Orally Bioavailable IRAK4 Degrader for the Treatment of Autoimmune Diseases.
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Zheng, Xiaozhang, Ji, Nan, Campbell, Veronica, Slavin, Anthony, Zhu, Xiao, Chen, Dapeng, Rong, Haojing, Enerson, Brad, Mayo, Michele, Sharma, Kirti, Browne, Chris M., Klaus, Christine R., Li, Haoran, Massa, Ginny, McDonald, Alice A., Shi, Yatao, Sintchak, Mike, Skouras, Stephanie, Walther, Dirk M., and Yuan, Karen
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- 2024
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3. Discovery of KT-474─a Potent, Selective, and Orally Bioavailable IRAK4 Degrader for the Treatment of Autoimmune Diseases
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Zheng, Xiaozhang, Ji, Nan, Campbell, Veronica, Slavin, Anthony, Zhu, Xiao, Chen, Dapeng, Rong, Haojing, Enerson, Brad, Mayo, Michele, Sharma, Kirti, Browne, Chris M., Klaus, Christine R., Li, Haoran, Massa, Ginny, McDonald, Alice A., Shi, Yatao, Sintchak, Mike, Skouras, Stephanie, Walther, Dirk M., Yuan, Karen, Zhang, Yi, Kelleher, Joe, Liu, Guang, Luo, Xinbo, Mainolfi, Nello, and Weiss, Matthew M.
- Abstract
Interleukin-1 receptor associated kinase 4 (IRAK4) is an essential mediator of the IL-1R and TLR signaling pathways, both of which have been implicated in multiple autoimmune conditions. Hence, blocking the activity of IRAK4 represents an attractive approach for the treatment of autoimmune diseases. The activity of this serine/threonine kinase is dependent on its kinase and scaffolding activities; thus, degradation represents a potentially superior approach to inhibition. Herein, we detail the exploration of structure–activity relationships that ultimately led to the identification of KT-474, a potent, selective, and orally bioavailable heterobifunctional IRAK4 degrader. This represents the first heterobifunctional degrader evaluated in a nononcology indication and dosed to healthy human volunteers. This molecule successfully completed phase I studies in healthy adult volunteers and patients with atopic dermatitis or hidradenitis suppurativa. Phase II clinical trials in both of these indications have been initiated.
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- 2024
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4. Multi-Shell Nanourchin-Integrated Dual Mode Lateral Flow Immunoassay for Sensitive and Rapid Detection of Clinical Cardiac Myosin-Binding Protein C.
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Xu Xuan, Shuzhen Yue, Keke Tu, Baozhen Yuan, Sai Bi, Jinjin Yu, Hui Qiu, Haotian Zhang, Lei Zhang, Heng-Fang Wu, Xiang-Jian Chen, Sheng Zhao, Wei Zhang, Ji-Nan Zhang, Li-Ping Jiang, Jian-Rong Zhang, and Jun-Jie Zhu
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- 2024
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5. Discovery of KT-413, a Targeted Protein Degrader of IRAK4 and IMiD Substrates Targeting MYD88 Mutant Diffuse Large B‑Cell Lymphoma.
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Weiss, Matthew M., Zheng, Xiaozhang, Ji, Nan, Browne, Chris M., Campbell, Veronica, Chen, Dapeng, Enerson, Brad, Fei, Xue, Huang, Xin, Klaus, Christine R., Li, Haoran, Mayo, Michele, McDonald, Alice A., Paul, Atanu, Rong, Haojing, Sharma, Kirti, Shi, Yatao, Slavin, Anthony, Walther, Dirk M., and Yuan, Karen
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- 2024
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6. Effect of shot peening on surface characteristics and high-temperature corrosion behaviour of super 13Cr martensitic stainless steel
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Long, Yan, Jiang, Wenchun, Luo, Jinheng, Wei, Junhui, Wang, Xiaoyan, Ji, Nan, Fan, Yujie, Jin, Qiang, and Liang, Xiaoming
- Abstract
Super 13Cr, as an economy stainless steel (SS) for oil country tubular goods, needs stable corrosion resistance in high-pressure and high-temperature (HPHT) downhole medium. Severe plastic deformation (SPD) are the surface modification technology to improve mechanical properties, fatigue behavior and corrosion resistance of metals, and shot peening (SP) has been the most widely used SPD process. However, there are quite limited studies about the microsutructure evolution, residual stress, and high-temperature corrosion behavior of SP-treated martensitic SS. In this study, super 13Cr martensitic SS was treated by SP with various air pressures and nozzle speeds. The surface characteristics and high-temperature corrosion behaviour in 3.17 mol/L K2HPO4solution were investigated through finite element model analysis, characterization of residual stress and microstructure, as well as electrochemical and stress corrosion cracking (SCC) tests at 160 °C and 10 MPa. The results showed that SP-treated super 13Cr could generate high-level compressive residual stress and SPD microstucture, including nano-sized equiaxed grains, gradient lamellar structure and fragmented carbides. Increasing air pressure contributed to achieve uniform nanocrystalline, but tended to generate high dislocation density and surface defects. The improving effect of SP treatment at low air pressure of 0.15 MPa on passivation ability was limited, and high air pressure adversely impacted corrosion resistance. SP-treated specimens showed high SCC susceptibility, due to the introduction of more surface defects, high angle grain boundaries, and dislocations.
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- 2024
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7. Discovery of KT-413, a Targeted Protein Degrader of IRAK4 and IMiD Substrates Targeting MYD88 Mutant Diffuse Large B-Cell Lymphoma
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Weiss, Matthew M., Zheng, Xiaozhang, Ji, Nan, Browne, Chris M., Campbell, Veronica, Chen, Dapeng, Enerson, Brad, Fei, Xue, Huang, Xin, Klaus, Christine R., Li, Haoran, Mayo, Michele, McDonald, Alice A., Paul, Atanu, Rong, Haojing, Sharma, Kirti, Shi, Yatao, Slavin, Anthony, Walther, Dirk M., Yuan, Karen, Zhang, Yi, Zhu, Xiao, Kelleher, Joe, Walker, Duncan, and Mainolfi, Nello
- Abstract
Developing therapies for the activated B-cell like (ABC) subtype of diffuse large B-cell lymphomas (DLBCL) remains an area of unmet medical need. A subset of ABC DLBCL tumors is driven by activating mutations in myeloid differentiation primary response protein 88 (MYD88), which lead to constitutive activation of interleukin-1 receptor associated kinase 4 (IRAK4) and cellular proliferation. IRAK4 signaling is driven by its catalytic and scaffolding functions, necessitating complete removal of this protein and its escape mechanisms for complete therapeutic suppression. Herein, we describe the identification and characterization of a dual-functioning molecule, KT-413 and show it efficiently degrades IRAK4 and the transcription factors Ikaros and Aiolos. KT-413 achieves concurrent degradation of these proteins by functioning as both a heterobifunctional degrader and a molecular glue. Based on the demonstrated activity and safety of KT-413 in preclinical studies, a phase 1 clinical trial in B-cell lymphomas, including MYD88 mutant ABC DLBCL, is currently underway.
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- 2024
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8. Targeting the tumor microenvironment in primary central nervous system lymphoma: Implications for prognosis.
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Shi, Han, Sun, Xuefei, Wu, Yuchen, Cui, Qu, Sun, Shengjun, Ji, Nan, and Liu, Yuanbo
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• Primary central nervous system lymphoma (PCNSL) is a rare and highly aggressive form of non-Hodgkin's lymphoma. • Tumor microenvironment (TME) plays an important role in tumor cell proliferation, immune escape and drug resistance. • To summarize and elucidate some of the mechanisms of action between the effects of TME on tumor progression and prognosis in PCNSL patients. • Enhanced comprehension of the interplay between tumor cells and the TME will lead to the development of novel targeted therapeutic agents and more effective combinations of current drugs to combat PCNSL. Primary central nervous system lymphoma (PCNSL) is a rare extranodal non-Hodgkin lymphoma, and there is limited research on its tumor microenvironment (TME). Nevertheless, more and more studies have evidence that TME has essential effects on tumor cell proliferation, immune escape, and drug resistance. Thus, it is critical to elucidate the role of TME in PCNSL. The understanding of the PCNSL TME is gradually unfolding, including factors that distinguish it from systemic diffuse large B-cell lymphoma (DLBCL). The TME in PCNSL exhibits both transcriptional and spatial intratumor heterogeneity. Cellular interactions between tumor cells and stroma cells reveal immune evasion signaling. The comparative analysis between PCNSL and DLBCL suggests that PCNSL is more likely to be an immunologically deficient tumor. In PCNSL, T cell exhaustion and downregulation of macrophage immune function are accompanied by suppressive microenvironmental factors such as M2 polarized macrophages, endothelin B receptor, HLA depletion, PD-L1, and TIM-3. MMP-9, Integrin-β1, and ICAM-1/LFA-1 play crucial roles in transendothelial migration towards the CNS, while CXCL13/CXCR5, CD44, MAG, and IL-8 are essential for brain parenchymal invasion. Further, macrophages, YKL-40, CD31, CD105, PD-1/PD-L1 axis, osteopontin, galectin-3, aggregative perivascular tumor cells, and HLA deletion may contribute to poor outcomes in patients with PCNSL. This article reviews the effect of various components of TME on the progression and prognosis of PCNSL patients to identify novel therapeutic targets. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Thermal Nickel-Catalyzed Carbon–Oxygen Cross-Coupling of (Hetero)aryl Halides with Alcohols Enabled by the Use of a Silane Reductant Approach.
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Yang, Liu, Jiao, Hai-Juan, Song, Geyang, Huang, Yan-Ru, Ji, Nan, Xue, Dong, and He, Wei
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- 2024
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10. An Attempt to Detect Ambient Black Carbon in the Human Brain Using Mass Spectrometry Imaging.
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Min, Ke, Hao, Shuyu, Lin, Yue, Lu, Dawei, Lv, Yifan, Zhang, Weican, Ji, Nan, Liu, Qian, and Jiang, Guibin
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- 2023
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11. Feasibility of mini-implant insertion between mesial and distal buccal roots of a maxillary first molar: A cone-beam computed tomography imaging study.
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Liu, Ji-Nan, He, Yin-Xue, Jia, Xue-Ting, Huang, Rui, Zeng, Na, Fan, Xiao-Chuan, and Huang, Xiao-Feng
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Mini-implant insertion in the maxillary posterior region can be influenced by anatomic limitations, thus increasing the failure rate. We explored the feasibility of a new implantation site: the region between the mesial and distal buccal roots of the maxillary first molar. Cone-beam computed tomography data from 177 patients were collected from a database. The maxillary first molars were morphologically classified by analyzing the angle and morphology of the mesial and distal buccal roots. Next, 77 subjects were randomly selected from the 177 patients to measure and analyze the hard-tissue morphology in the maxillary posterior region. We devised the Morphological Classification on the Mesial and Distal Buccal Roots of Maxillary First Molar (MCBRMM), divided into 3 types: MCBRMM-I, II, and III. In all subjects, MCBRMM-I, II, and III accounted for 43%, 25%, and 32%, respectively. At 8 mm from the mesial cementoenamel junction of maxillary first molars, the interradicular distance between the maxillary first molar's mesiodistal buccal roots of MCBRMM-I was 2.6 mm, showing an upward trend from the cementoenamel junction to the apex. The distance from the buccal bone cortex to the palatal root was >9 mm. The buccal cortical thickness was >1 mm. This study provided a potential site for mini-implant insertion in the maxillary posterior region: the alveolar bone of maxillary first molars in MCBRMM-I. • We proposed the morphological classification of buccal roots of maxillary first molar. • Sufficient alveolar bone between the buccal roots of MCBRMM-I for mini-implant insertion. • This study identified a new potential site for mini-implant insertion. [ABSTRACT FROM AUTHOR]
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- 2023
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12. Label-Free Raman Spectromicroscopy Unravels the Relationship between MGMT Methylation and Intracellular Lipid Accumulation in Glioblastoma.
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Wang, Nana, Wang, Jiejun, Wang, Pu, Ji, Nan, and Yue, Shuhua
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- 2023
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13. Comparison of Recovery Effect for Sufentanil vs. Remifentanil Anesthesia in Elderly Patients Undergoing Curative Resection for Hepatocellular Carcinoma.
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Ji, Nan, Zhang, Yan, Li, Lin, Du, Jinju, Tan, Shigang, and Liu, Fang
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- 2023
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14. Investigation of periodontal status and bacterial composition aroundmini-implants.
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Huang, Rui, He, Yin-Xue, Jia, Xue-Ting, Liu, Ji-Nan, Fan, Xiao-Chuan, Zeng, Na, and Huang, Xiao-Feng
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Mini-implants are now widely used in orthodontic treatment. Soft-tissue inflammation around the mini-implant is an important factor affecting its stability. This study aimed to investigate the periodontal status and the bacterial composition around mini-implants. A total of 79 mini-implants in 40 patients (aged 18-45 years) were evaluated in this study. The mini-implant probing depth (mPD), mini-implant gingival sulcus bleeding index (mBI), mini-implant plaque index (mPLI), and the composition of the supragingival and subgingival plaque around the mini-implants were recorded. After Congo red staining, the bacteria were classified and counted under a light microscope. The mPLI and mBI around mini-implants in the infrazygomatic crest were higher than those in the buccal shelf and interradicular area. The mPD was higher on the coronal site of the mini-implant than on the mesial, distal, and apical sites in the infrazygomatic crest. The mPLI around the mini-implant was positively correlated with the mBI, and the mBI was positively correlated with the mPD. The supragingival and subgingival bacterial composition around the mini-implants was similar to that of natural teeth. Compared with supragingival bacterial composition, the subgingival bacteria of mini-implants had a significantly lower proportion of cocci and a higher proportion of bacilli and spirochetes. The bacteria composition of the plaque and the location are important factors in the inflammation around mini-implants. Similar to natural teeth, mini-implants require health maintenance to prevent inflammation of the surrounding soft tissue and maintain stability. • A study of periodontal status and bacterial composition of mini-implants is described. • Inflammation around mini-implants was prevalent. • The most severe inflammation around mini-implants was found in the infrazygomatic crest. • The supra- and subgingival bacterial composition of mini-implants was similar to natural teeth. • Plaque composition and location are important factors in the inflammation around mini-implants. [ABSTRACT FROM AUTHOR]
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- 2023
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15. Preparation of a Poly(vinyl alcohol)-Based Hydrogel Fiber with Excellent Mechanical and Shape Memory Performances with the Help of the Fiber Drawing Technology.
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Luo, Jin, Xiong, Xike, Ji, Nan, Zhang, Weiwei, Sun, Jun, Wang, Jianjun, Zhuo, Qiqi, Qin, Chuanxiang, and Dai, Lixing
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- 2023
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16. Comparison of Recovery Effect for Sufentanil vs. Remifentanil Anesthesia in Elderly Patients Undergoing Curative Resection for Hepatocellular Carcinoma
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Ji, Nan, Zhang, Yan, Li, Lin, Du, Jinju, Tan, Shigang, and Liu, Fang
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Introduction: The aim of this work is to evaluate the clinical efficacy and safety of sufentanil vs. remifentanil anesthesia in elderly patients undergoing curative resection for hepatocellular carcinoma (HCC). Methods: Medical records of elderly patients aged ≥ 65 years who received curative resection for HCC between January 2017 and December 2020 were retrospectively reviewed. The patients were divided into either the sufentanil group or the remifentanil group according to the method of analgesia used. Vital signs including mean arterial pressure (MAP), heart rate (HR), and arterial oxygen saturation (SpO
2 ), distribution of T-cell subsets (CD3, CD4, and CD8 lymphocytes), distribution of the stress response index [cortisol (COR), interleukin (IL)-6, C-reactive protein (CRP), and glucose (GLU)] were recorded prior to anesthesia (T0), after induction of anesthesia (T1), at the end of surgery (T2), 24 h after surgery (T3), and 72 h after surgery (T4). Postoperative adverse events were collected. Results: Repeated measure analysis of variance (ANOVA) showed that after controlling for baseline patient demographic and treatment characteristics as covariates, both between- and within-group effects were significant (all P< 0.01), and the interaction between time and treatments was also significant (all P< 0.01) in the vital signs (MAP, HR, and SpO2 ), distribution of T-cell subsets (CD3, CD4, and CD8 lymphocytes), and distribution of the stress response index (COR, IL-6, CRP, and GLU), indicating that sufentanil led to stable hemodynamic and respiratory functions, lower reduction of T-lymphocyte subsets, and stable stress response indices compared to remifentanil. There is no significant difference in adverse reactions between the two groups (P= 0.72). Conclusions: Sufentanil was associated with improved hemodynamic and respiratory function, less stress response, less inhibition of cellular immunity, and similar adverse reactions compared with remifentanil.- Published
- 2023
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17. Corrosion Behavior of P110 Steel in Simulated CO2 and Formation Water Environment
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Ji, Nan, Zhong, Cheng Xu, Zheng, Ru Seng, Wang, Peng, Zhu, Li Juan, and Feng, Chun
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The corrosion behavior and mechanism of P110 steel tubing in in low CO
2 particle pressure and high salinity formation water environment was investigated through high temperature and high pressure dynamic immersion tests, macro-morphology analysis, scanning electron microscopy(SEM) inspection, energy disperse spectroscopy(EDS) analysis and X-ray diffraction(XRD) analysis. The Results showed that the increasing of CO2 partial pressure accelerated the corrosion process of P110 tubing steel, and the corrosion rates of P110 tubing decreased with the increasing of temperature. Furthermore, the high content of Ca2+ in the formation water also had a big influence on the corrosion behavior of P110 tubing steel, for it could affect the precipitation quantity and morphology of CaCO3 at different temperature and CO2 particle pressure.- Published
- 2022
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18. Postoperative Analgesic Efficacy and Safety of Ropivacaine Plus Diprospan for Preemptive Scalp Infiltration in Patients Undergoing Craniotomy: A Prospective Randomized Controlled Trial
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Han, Xueye, Ren, Tong, Wang, Yang, Ji, Nan, and Luo, Fang
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- 2022
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19. Corrosion Behavior of 3Cr Steel in Simulated Oilfield CO2 Environment
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Ji, Nan, Kuang, Xian Ren, Ge, Kai Qi, Wang, Peng, Long, Yan, and Feng, Chun
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The corrosion behavior of 3Cr steel in simulated oilfield CO
2 and formation water environment at different temperature and partial pressure of CO2 were investigated using dynamic immersion tests, scanning electron microscopy inspection and X-ray diffraction analysis. The result demonstrated that with an increasing of temperature, the corrosion rate of 3Cr steel decreased, and reached the maximum corrosion rate when the partial pressure of CO2 was 0.5MPa. The high content of Ca2+ in the formation water had also played an important role in the corrosion behavior of the 3Cr steel for it can lead to a deposition of the CaCO3 on the surface of the specimen.- Published
- 2022
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20. Research Progress on Properties and Application of Titanium Alloy Oil Country Tubular Goods
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Zhu, Li Juan, Feng, Chun, Zhang, Kai, Zhang, Fang Fang, Song, Wen Wen, Wang, Peng, and Ji, Nan
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In recent years, with the rapid development of modern petroleum industry, some conventional oil country tubular goods (OCTGs) have been unable to meet the requirements of ultra-deep oil and gas drilling and production. Titanium alloy OCTGs showed broad application prospects due to its high specific strength, Low elastic modulus and strong CO
2 +H2 S+Cl- corrosion resistance. However, large-scale applications of titanium alloy OCTGs were seldom reported, which is mainly attributed to the lack of anti-corrosive resistance and mechanical performance of titanium alloy OCTGs in the working conditions. In the present work, the research progress on properties and application of titanium alloy OCTGs were reviewed. The resistance to uniform corrosion, stress corrosion cracking, pit and crevice corrosion, mechanical properties of the titanium alloy OCTGs in air and downhole corrosion media were comprehensively discussed. Application status and prospect of titanium alloy OCTGs in oil and gas exploration were also summarized.- Published
- 2022
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21. Disease-specific suppressive granulocytes participate in glioma progression
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Zhao, Jiarui, Wu, Di, Liu, Jiaqi, Zhang, Yang, Li, Chunzhao, Zhao, Weichen, Cao, Penghui, Wu, Shixuan, Li, Mengyuan, Li, Wenlong, Liu, Ying, Huang, Yingying, Cao, Ying, Sun, Yiwen, Yang, Ence, Ji, Nan, Yang, Jing, and Chen, Jian
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Glioblastoma represents one of the most aggressive cancers, characterized by severely limited therapeutic options. Despite extensive investigations into this brain malignancy, cellular and molecular components governing its immunosuppressive microenvironment remain incompletely understood. Here, we identify a distinct neutrophil subpopulation, termed disease-specific suppressive granulocytes (DSSGs), present in human glioblastoma and lower-grade gliomas. DSSGs exhibit the concurrent expression of multiple immunosuppressive and immunomodulatory signals, and their abundance strongly correlates with glioma grades and poor clinical outcomes. Genetic disruption of neutrophil recruitment in immunocompetent mouse models of gliomas, achieved through Cxcl1knockout in glioma cells or host-specific Cxcr2deletion or diphtheria toxin A-mediated neutrophil depletion, can significantly enhance antitumor immunity and prolong survival. Further, we reveal that the skull bone marrow and meninges can be the primary sources of neutrophils and DSSGs in human and mouse glioma tumors. These findings demonstrate a critical mechanism underlying the establishment of the immunosuppressive microenvironment in gliomas.
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- 2024
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22. Ultrasensitive airflow sensor prepared by electrostatic flocking for sound recognition and motion monitoringElectronic supplementary information (ESI) available. See DOI: 10.1039/d2mh00064d
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Luo, Jin, Ji, Nan, Zhang, Weiwei, Ge, Pei, Liu, Yixuan, Sun, Jun, Wang, Jianjun, Zhuo, Qiqi, Qin, Chuanxiang, and Dai, Lixing
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Recently, airflow sensors have attracted great attention due to their unique characteristics. However, the preparation of high-performance airflow sensors viaextraordinarily simple, controllable and cost-effective methods remains a great challenge. Herein, inspired by the fluff system of the spider, an ultrasensitive fluffy-like airflow sensor with carbon fibers (CFs) uniformly and firmly planted on the surface of a polyvinyl alcohol (PVA) fibrous substrate has been easily fabricated using electrostatic flocking technology. The fluffy-like structure endows the airflow sensor with superior properties including ultra-sensitivity, fast response time (0.103 s), low airflow velocity detection limit (0.068 m s−1), ultra-sensitive detection in a wide airflow range (0.068–16 m s−1), and multi-directional consistent response to airflow. This sensor can be used to accurately recognize sound waves and voiceless speech and detect human and object motions in different postures and speeds. This work presents insights into designing and preparing high-performance airflow sensors on a large-scale for sound recognition, motion monitoring, and assisting the disabled.
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- 2022
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23. Biodegradable Flexible Electronic Device with Controlled Drug Release for Cancer Treatment.
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Li, Hangfei, Gao, Fei, Wang, Peng, Yin, Lan, Ji, Nan, Zhang, Liwei, Zhao, Lingyun, Hou, Guohui, Lu, Bingwei, Chen, Ying, Ma, Yinji, and Feng, Xue
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- 2021
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24. Physicochemical properties and bio‐interfacial interactions of surface modified PDLLA‐PAMAMlinear dendritic block copolymers
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Simms, Briana L., Ji, Nan, Chandrasiri, Indika, Zia, Mohammad Farid, Udemgba, Chinwe S., Kaur, Ravinder, Delcamp, Jared H., Flynt, Alex, Tan, Chalet, and Watkins, Davita L.
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Here, we demonstrate the applicability of self‐assembling linear‐dendritic block copolymers (LDBCs) and their nanoaggregates possessing varied surfaces as therapeutic nanocarriers. These LDBCs are comprised of a hydrophobic, linear polyester chemically coupled to a hydrophilic dendron polyamidoamine (PAMAM)—the latter of which acts as the surface of the self‐assembled nanoaggregate in aqueous media. To better understand how surface charge density affects the overall operability of these nanomaterials, we modified the nanoaggregate surface to yield cationic (NH3+), neutral (OH), and anionic (COO−) surfaces. The effect of these modifications on the physicochemical properties (i.e., size, morphology, and surface charge density), colloidal stability, and cellular uptake mechanism of the polymeric nanocarrier were investigated. This comparative study demonstrates the viability of nanoaggregates formed from PDLLA‐PAMAM LDBCs to serve as nanocarriers for applications in drug delivery.
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- 2021
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25. Low‐Interception Waveforms: To Prevent the Recognition of Spectrum Waveform Modulation via Adversarial Examples
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Tan, Jia, Xie, Haidong, Zhang, Xiaoying, Ji, Nan, Liao, Haihua, Yu, ZuGuo, Xiang, Xueshuang, and Liu, Naijin
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Deep learning is applied to many complex tasks in the field of wireless communication, such as modulation recognition of spectrum waveforms, because of its convenience and efficiency. This leads to the problem of a malicious third party using a deep learning model to easily recognize the modulation format of the transmitted waveform. Some existing works address this problem directly using the concept of adversarial examples in the computer vision field without fully considering the characteristics of the waveform transmission in the physical world. Therefore, we propose two low‐interception waveforms (LIWs) generation methods, the LIW and ULIW algorithms, which can reduce the probability of the modulation being recognized by a third party without affecting the reliable communication of the friendly party. Among them, ULIW improves LIW algorithm by simulating channel noise during training cycle, and substantially reduces the perturbation magnitude while maintaining low interception accuracy. Our LIW and ULIW exhibit significant low‐interception performance in both numerical simulations and hardware experiments. Define the low‐interception question, and give the mathematical model, application scenarios, and evaluation criteriaPropose the ULIW algorithm based on our LIW algorithm, which substantially reduces perturbation while maintaining low interception accuracyVerify the low‐interception performance of LIW and ULIW in both the digital and physical worlds Define the low‐interception question, and give the mathematical model, application scenarios, and evaluation criteria Propose the ULIW algorithm based on our LIW algorithm, which substantially reduces perturbation while maintaining low interception accuracy Verify the low‐interception performance of LIW and ULIW in both the digital and physical worlds
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- 2024
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26. Identification of MGMT promoter methylation as a specific lipid metabolism biomarker, reveals the feasibility of atorvastatin application in glioblastoma.
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Hao, Zhaonian, Wang, Jiejun, Lv, Yifan, Wu, Weiqi, Zhang, Shaodong, Hao, Shuyu, Chu, Junsheng, Wan, Hong, Feng, Jie, and Ji, Nan
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METHYLGUANINE ,LIPID metabolism ,O6-Methylguanine-DNA Methyltransferase ,GLIOBLASTOMA multiforme ,ATORVASTATIN ,METHYLATION - Abstract
Glioblastoma is one of the deadliest tumors, and limited improvement in managing glioblastoma has been achieved in the past decades. The unmethylated promoter area of 6-O-Methylguanine-DNA Methyltransferase (MGMT) is a significant biomarker for recognizing a subset of glioblastoma that is resistant to chemotherapy. Here we identified MGMT methylation can also work as a specific biomarker to classify the lipid metabolism patterns between methylated and unmethylated glioblastoma and verify the potential novel therapeutic strategy for unmethylated MGMT glioblastoma. Liquid Chromatograph Mass Spectrometer has been applied for non-targeted metabolome and targeted lipidomic profiling to explore the metabolism pattern correlated with MGMT promoter methylation. Transcriptome has been performed to explore the biological differences and the potential mechanism of lipid metabolism in glioblastoma samples. In vivo and ex vivo assays were performed to verify the anti-tumor activity of atorvastatin in the administration of glioblastoma. Multi-omics assay has described a significant difference in lipid metabolism between MGMT methylated and unmethylated glioblastoma. Longer and unsaturated fatty acyls were found enriched in MGMT-UM tumors. Lipid droplets have been revealed remarkably decreased in MGMT unmethylated glioblastoma. In vivo and ex vivo assays revealed that atorvastatin and also together with temozolomide showed significant anti-tumor activity, and atorvastatin alone was able to achieve better survival and living conditions for tumor-hosting mice. MGMT promoter methylation status might be a well-performed biomarker of lipid metabolism in glioblastoma. The current study can be the basis of further mechanism studies and implementation of clinical trials, and the results provide preclinical evidence of atorvastatin administration in glioblastoma, especially for MGMT unmethylated tumors. • This study comprehensively characterizes the different lipid-metabolism patterns in M-MGMT and UM-MGMT glioblastomas. • Lipolysis process is enhanced in UM-MGMT tumor, implicating key roles of lipid in tumor progression and drug-resistance. • Ex vivo and in vivo experiments show the anti-tumor capacity of atorvastatin in glioblastoma with or without temozolomide. • This study provides strategy and pre-clinical evidence of lipid-targeting therapy in the future avenue. [ABSTRACT FROM AUTHOR]
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- 2024
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27. Fracture Failure Analysis of the Blowout Preventer Ram in an Oilfield
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Cong, Shen, Fan, Zhi Hai, Li, Dong Feng, Tong, Ke, and Ji, Nan
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This paper gives a thorough investigation on the fracture failure of the blowout preventer (BOP) ram. Through appearance inspection, magnetic powder inspection, physicochemical inspection, metallographic inspection and scanning electron microscope (SEM), the main fracture reason of the BOP ram is that there was some original cracks in the BOP ram before fracture, during the service process the bop ram is subjected to impact load, therefore brittle fracture occurs due to the high brittleness of the gate material (which is caused by large internal structure) and low anti-crack propagation ability. Key words: Blowout preventer (BOP) ram; Fatigue break; Brittle fracture; Failure analysis
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- 2021
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28. Failure Analysis of Tee in Shale Gas Transportation Platform
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Ji, Nan, Feng, Jie, and Long, Yan
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The mains reasons for internal corrosion failure and cracking of the tee in shale gas transportation platform have been proposed based on macroscopic analysis, physical and chemical property test, metallographic examination, Scanning Electron Microscope analysis, X-ray spectroscopy analysis and service condition analysis. The results show that corrosion occurring in the inner wall of tee was caused by the combined impacts of CO
2 corrosion, sulfate-reducing bacteria (SRB) corrosion and erosion corrosion. The crack in the weld of the inner wall was mainly due to the Sulfate-reducing Bacteria Induced cracking.- Published
- 2021
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29. Integrity Analysis of Casing Premium Connection under High Compression Load
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Wang, Peng, Xie, Jun Feng, Zheng, You Cheng, Hu, Fang Ting, and Ji, Nan
- Abstract
With the increasingly harsh conditions of complex oil and gas wells such as high-temperature and high-pressure deep wells and long-distance horizontal well, the integrity of casing string puts forward higher requirements for compression performance of premium thread connections. The requirements of high compression resistance of connection is complicated, including ensuring the integrity of structure and sealability for thread at the same time under high compression load being equal to the bearing capacity of casing body, and considering the structural fatigue, environmental fracture and seal failure caused by the weakening of thread bearing performance under cyclic load. Based on the failure cases of some casing connections, laboratory tests and finite element analysis results, this paper discusses the key technical points in the above mentioned problems, and provides the suggestions for the performance optimization of high-performance casing premium connections based on failure prevention.
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- 2021
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30. Unilateral renal agenesis and contralateral hydroureteronephrosis in a boy with tuberous sclerosis complex.
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Gau, Shuo-Yan, Sheu, Ji-Nan, Wang, Xing-An, and Tsai, Jeng-Dau
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TUBEROUS sclerosis - Published
- 2023
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31. Wearable Sensing and Telehealth Technology with Potential Applications in the Coronavirus Pandemic
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Ding, Xiaorong, Clifton, David, Ji, Nan, Lovell, Nigel H., Bonato, Paolo, Chen, Wei, Yu, Xinge, Xue, Zhong, Xiang, Ting, Long, Xi, Xu, Ke, Jiang, Xinyu, Wang, Qi, Yin, Bin, Feng, Guodong, and Zhang, Yuan-Ting
- Abstract
Coronavirus disease 2019 (COVID-19) has emerged as a pandemic with serious clinical manifestations including death. A pandemic at the large-scale like COVID-19 places extraordinary demands on the world's health systems, dramatically devastates vulnerable populations, and critically threatens the global communities in an unprecedented way. While tremendous efforts at the frontline are placed on detecting the virus, providing treatments and developing vaccines, it is also critically important to examine the technologies and systems for tackling disease emergence, arresting its spread and especially the strategy for diseases prevention. The objective of this article is to review enabling technologies and systems with various application scenarios for handling the COVID-19 crisis. The article will focus specifically on 1) wearable devices suitable for monitoring the populations at risk and those in quarantine, both for evaluating the health status of caregivers and management personnel, and for facilitating triage processes for admission to hospitals; 2) unobtrusive sensing systems for detecting the disease and for monitoring patients with relatively mild symptoms whose clinical situation could suddenly worsen in improvised hospitals; and 3) telehealth technologies for the remote monitoring and diagnosis of COVID-19 and related diseases. Finally, further challenges and opportunities for future directions of development are highlighted.
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- 2021
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32. Friction and wear performance of a copper-based bond emery wheel for rail grinding
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Cai, Lu-cheng, Jiang, Xiao-song, Guo, Yu-cheng, Sun, Da-ming, Wang, Xing-long, Kuai, Ji-nan, and Pang, Lin-yan
- Abstract
In this paper, a copper-based bond emery wheel was prepared by vacuum hot pressing sintering through powder metallurgy. The effects of various bond contents on the grinding performance of the copperbased bond grinding wheel were studied using a self-made experimental device; the friction coefficients between the friction pairs and roughness of the grinded rail surface were also obtained. The results show that the grinding wheel had the best grinding performance when the content of the copper-based bond was at 35 wt.-%, the friction coefficient 0.29, the grinding ratio 81.34, and the surface roughness 7.191 μm, which meet the roughness requirements of rail grinding. The microstructure of the rail surface and debris after grinding were studied by scanning electron microscope and energy spectrum analysis. Adhesive wear, abrasive wear, oxidation wear and delamination wear occurred during the friction and wear process. The grinding behavior of grinding wheels was analyzed in accordance with the experimental results.
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- 2020
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33. Association between variant alleles of major histocompatibility complex class II regulatory genes and nasopharyngeal carcinoma susceptibility
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Zhou, Ping, Liu, Sha, Ji, Nan-Nan, Zhang, Shuang, Wang, Peng, Lin, Bing, Yang, Ping, Lin, Xian-Tao, Cai, Yi-Zheng, Wang, Zi-Ming, Zhou, Han, Sun, Shi-Yao, and Hao, Xin-Bao
- Abstract
Supplemental Digital Content is available in the text.Major histocompatibility complex (MHC) class II regulatory genes play a paramount role in immune response that can exert a predominant influence on clinical outcome of Epstein–Barr virus infection consistently assumed as the main pathogenetic factor for nasopharyngeal carcinoma. To elucidate the relationship between allelic variants of MHCclass II regulatory genes and susceptibility to nasopharyngeal carcinoma, a total of 28 polymorphic loci at MHCclass II regulatory genes, involving CIITA, CREB1, RFXfamily genes (RFX5, RFXAP,and RFXANK), and NFYfamily genes (NFYA, NFYB, and NFYC), were genotyped by multiplex SNaPshot minisequencing in 137 patients with nasopharyngeal carcinoma and 107 healthy controls from the southern Chinese population. Allelic analysis disclosed that rs7404873, rs6498121, rs6498126, and rs56074043 shared correlations with nasopharyngeal carcinoma (Ptrend< 0.05). Further, rs6498126 on CIITAwas independently associated with the risk of developing nasopharyngeal carcinoma (CC vs. GG, odds ratio: 7.386, 95% confidence interval: 1.934–28.207, Ptrend< 0.01). Conversely, rs7404873 on CIITAand rs56074043 on NFYBmanifested epistatic interaction to decreased susceptibility of nasopharyngeal carcinoma (rs7404873, TT vs. GG, odds ratio: 0.256, 95% confidence interval: 0.088–0.740, Ptrend< 0.05; rs56074043, AA vs. AG, odds ratio: 0.341, 95% confidence interval: 0.129–0.900, Ptrend< 0.05). Additionally, bioinformatics analysis revealed that the three variants were transcriptional regulatory in function and might impact the expression of nearby genes. The findings suggested genetic variants on MHCclass II regulatory genes contributed to nasopharyngeal carcinoma susceptibility and might provide new insights for screening high-risk population.
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- 2020
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34. Friction and wear performance of a copper-based bond emery wheel for rail grinding
- Author
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Cai, Lu-cheng, Jiang, Xiao-song, Guo, Yu-cheng, Sun, Da-ming, Wang, Xing-long, Kuai, Ji-nan, and Pang, Lin-yan
- Abstract
In this paper, a copper-based bond emery wheel was prepared by vacuum hot pressing sintering through powder metallurgy. The effects of various bond contents on the grinding performance of the copperbased bond grinding wheel were studied using a self-made experimental device; the friction coefficients between the friction pairs and roughness of the grinded rail surface were also obtained. The results show that the grinding wheel had the best grinding performance when the content of the copper-based bond was at 35 wt.-%, the friction coefficient 0.29, the grinding ratio 81.34, and the surface roughness 7.191 μm, which meet the roughness requirements of rail grinding. The microstructure of the rail surface and debris after grinding were studied by scanning electron microscope and energy spectrum analysis. Adhesive wear, abrasive wear, oxidation wear and delamination wear occurred during the friction and wear process. The grinding behavior of grinding wheels was analyzed in accordance with the experimental results.
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- 2020
- Full Text
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35. Children with allergic rhinitis and a risk of epilepsy: A nationwide cohort study.
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Pan, Hui-Hsien, Hung, Tung-Wei, Tsai, Jeng-Dau, Chen, Hsuan-Ju, Liao, Pei-Fen, and Sheu, Ji-Nan
- Abstract
Purpose: Little is known about whether allergic disease is associated with a subsequent increased risk of childhood-onset epilepsy. We used a large, population-based cohort study to examine whether children with antecedent allergic rhinitis (AR) were associated with a subsequent increased risk of epilepsy.Methods: This retrospective population-based cohort study was conducted by using data from the 2000-2012 Taiwan's National Health Insurance Research Database. We enrolled 67,537 children aged 0-18 years diagnosed with AR and 67,537 age- and gender-matched children without the diagnosis of AR. The incidence rate (per 10,000 person-years) of epilepsy was calculated. We used Cox proportional hazards regression analysis to estimate hazard ratios (HRs) and 95 % confident interval (CI).Results: Of the 135,074 children included in the analyses, those with AR had a higher incidence rate of epilepsy (6.84 versus 3.95 per 10,000 person-years, p < 0.001) and an earlier age at diagnosis of epilepsy than those without AR [8.54 (4.90) versus 9.33 (5.40) years, p = 0.03)]. The Kaplan-Meier survival analysis demonstrated that the children with AR had a higher likelihood of developing epilepsy than those without AR (p < 0.001). After adjusting for confounding factors in multivariate model, children with AR had a 76 % increased risk of epilepsy (HR 1.76, 95 % CI 1.51-2.04) than those without AR. Boys had a 21 % increased risk of epilepsy (HR 1.21, 95 % CI 1.05-1.40) than girls.Conclusions: These results suggest that children with AR were associated with an increased subsequent risk of epilepsy. [ABSTRACT FROM AUTHOR]- Published
- 2020
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36. Cardiac Myosin-Binding Protein C Release Profile After Cardiac Surgery in Intensive Care Unit.
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Chen, Xiang-Jian, Zhang, Wei, Bian, Zhi-Ping, Wang, Ze-Mu, Zhang, Juan, Wu, Heng-Fang, Shao, Yong-Feng, Zhang, Ji-Nan, and Zhao, Sheng
- Abstract
Cardiac surgical procedures produce iatrogenic myocardial cell injury with necrosis that result in an obligatory release of biomarkers. Cardiac myosin binding protein C (cMyBP-C) has recently emerged as a specific and sensitive biomarker in patients with acute myocardial injury. We therefore aimed to investigate the release profiles of cMyBP-C after cardiac surgical procedures. Enzyme-linked immunosorbent assay to detect blood cMyBP-C was established by using two monoclonal antibodies against N-terminus of human cMyBP-C. Consecutive patients undergoing cardiac operations (N = 151) were recruited in this study. Blood cMyBP-C was assayed preoperatively, at intensive care unit arrival (0 hour after the operation), at 2 to 48 hours, and before discharge. The characteristics and detailed surgical procedure were recorded. The established immunoassay was capable of detecting human cMyBP-C (0 to 1000 ng/L). The released cMyBP-C peaked immediately after cardiac surgery (0 h), attaining 3.8-fold higher than before the operation, dropped abruptly within 24 hours, and stayed at a higher level until discharge. Postoperative cMyBP-C levels correlated positively with high-sensitivity cardiac troponin T (hs-cTnT), creatine kinase, myoglobin, and creatine kinase MB isoenzyme. Different cardiac surgical procedures were characterized by different levels of release of cardiac biomarkers. Isolated off-pump coronary artery bypass grafting was associated with the smaller amount of cMyBP-C release, whereas valve replacement/plasty surgery produced higher release, in particular the multiple-valve surgery. Both cMyBP-C and hs-cTnT correlated with surgical techniques, postoperative intensive care unit stay, and hospital stay. Circulating cMyBP-C is a promising novel biomarker for evaluating cardiac surgical trauma in patients undergoing a cardiac operation. [ABSTRACT FROM AUTHOR]
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- 2019
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37. Design, Synthesis, and Preclinical Characterization of Selective Factor D Inhibitors Targeting the Alternative Complement Pathway.
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Karki, Rajeshri G., Powers, James, Mainolfi, Nello, Anderson, Karen, Belanger, David B., Liu, Donglei, Ji, Nan, Jendza, Keith, Gelin, Christine F., Mac Sweeney, Aengus, Solovay, Catherine, Delgado, Omar, Crowley, Maura, Liao, Sha-Mei, Argikar, Upendra A., Flohr, Stefanie, La Bonte, Laura R., Lorthiois, Edwige L., Vulpetti, Anna, and Brown, Ann
- Published
- 2019
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38. Trend of seizure remission in patients with tuberous sclerosis complex: A retrospective medical review.
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Wei, Chang-Ching, Sheu, Ji-Nan, Liu, Jung-Tung, Yang, Sheng-Hui, Chou, I-Ching, and Tsai, Jeng-Dau
- Subjects
TUBEROUS sclerosis ,SPASMS ,NEUROBEHAVIORAL disorders ,DISEASE remission ,METASTASIS - Abstract
Background Seizures in tuberous sclerosis complex (TSC) tend to be intractable over time and become a subsequent psychological burden for the patients. The purpose of the current study was to describe the onset, phenotype, and factors associated with seizure remission in patients with TSC. Methods Patients diagnosed with TSC between 2009 and 2015 completed a questionnaire interview and underwent a systematic evaluation, including a medical review of their epilepsy history and neurobehavioral disorder assessment. Results Of the 61 patients, 50 patients (82.0%) had a positive seizure history. The active (n = 34) and seizure remission (n = 16) groups showed significant differences in age, neurobehavioral disorder, history of refractory epilepsy, and onset age ( p < 0.001, p < 0.05, p < 0.05, and p < 0.05, respectively). The remission rates were 33.3% and 38.5% for those aged 6–18 years and over 18 years, respectively (p for trend = 0.01). Conclusion Seizure remission can occur in adulthood. It shows a high correlation with patient age, minor refractory epilepsy, and neurobehavioral disorders. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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39. Decentralised Sliding Mode Control for Nonlinear Interconnected Systems with Unknown Interconnections⁎⁎This paper was partially supported by the National Natural Science Foundation of China (61573180,61973315).
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Ji, Nan, Yan, Xing-Gang, Mao, Zehui, Zhao, Dongya, and Jiang, Bin
- Abstract
In this paper, a novel decentralised robust state feedback sliding mode control is presented to stabilise a class of nonlinear interconnected systems with matched uncertainty and unknown interconnections. A composite sliding surface is designed, and a set of conditions are developed to guarantee that the corresponding sliding motion is uniformly asymptotically stable. Then, a decentralised state feedback sliding mode control is proposed to drive interconnected systems to the designed sliding surface in finite time, and sliding motion occurs thereafter. The bounds on the uncertainties and interconnections are known nonlinear functions, which are employed in the control design to reject the effects of uncertainties and unknown interconnections to enhance the robustness. Finally, a numerical simulation example is given to demonstrate the effectiveness of the proposed control strategy.
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- 2020
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40. Microchannel with Stacked Microbeads for Separation of Plasma from Whole Blood
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CHEN, Meng-Di, YANG, Yan-Ting, DENG, Zhi-Yang, XU, Hong-Yan, DENG, Ji-Nan, YANG, Zhong, HU, Ning, and YANG, Jun
- Abstract
A microfluidic device integrated with a microchannel stacked by two kinds of microbeads with different sizes and a capillary microchannel array was designed and fabricated. When whole blood sample flowed through these channels, blood cells were filtered and adsorbed by the stacked microbeads, and plasma could be separated rapidly. The microbeads were introduced into the channel by negative pressure and thus stacked compactly. Protein blocking solution was used to improve the hydrophilicity of the bead surface. Then the microchip was dried and cooled before 20 μL of blood was dropped in the inlet. Driven by capillary force, the blood proceeded in the channel. The influences of microbeads with different sizes and a locally widened microchannel were investigated. Experimental results showed that when microbeads with a diameter of 10 μm were filled in the locally widened microchannel, the separation rate of plasma was the fastest. The collection rate of plasma could reach up to 0.16 μL min−1in this case, which could meet the requirement of most clinical applications. On the chip device, collected plasma was used to carry out the agglutination test, and the blood group could be determined quickly, which verified the usefulness of this method.
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- 2019
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41. Design, Synthesis, and Preclinical Characterization of Selective Factor D Inhibitors Targeting the Alternative Complement Pathway
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Karki, Rajeshri G., Powers, James, Mainolfi, Nello, Anderson, Karen, Belanger, David B., Liu, Donglei, Ji, Nan, Jendza, Keith, Gelin, Christine F., Mac Sweeney, Aengus, Solovay, Catherine, Delgado, Omar, Crowley, Maura, Liao, Sha-Mei, Argikar, Upendra A., Flohr, Stefanie, La Bonte, Laura R., Lorthiois, Edwige L., Vulpetti, Anna, Brown, Ann, Long, Debby, Prentiss, Melissa, Gradoux, Nathalie, de Erkenez, Andrea, Cumin, Frederic, Adams, Christopher, Jaffee, Bruce, and Mogi, Muneto
- Abstract
Complement factor D (FD), a highly specific S1 serine protease, plays a central role in the amplification of the alternative complement pathway (AP) of the innate immune system. Dysregulation of AP activity predisposes individuals to diverse disorders such as age-related macular degeneration, atypical hemolytic uremic syndrome, membranoproliferative glomerulonephritis type II, and paroxysmal nocturnal hemoglobinuria. Previously, we have reported the screening efforts and identification of reversible benzylamine-based FD inhibitors (1and 2) binding to the open active conformation of FD. In continuation of our drug discovery program, we designed compounds applying structure-based approaches to improve interactions with FD and gain selectivity against S1 serine proteases. We report herein the design, synthesis, and medicinal chemistry optimization of the benzylamine series culminating in the discovery of 12, an orally bioavailable and selective FD inhibitor. 12demonstrated systemic suppression of AP activation in a lipopolysaccharide-induced AP activation model as well as local ocular suppression in intravitreal injection-induced AP activation model in mice expressing human FD.
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- 2019
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42. Risk of Cardiovascular Disease and Mortality in Young Adults With End-stage Renal Disease: An Analysis of the US Renal Data System
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Modi, Zubin J., Lu, Yee, Ji, Nan, Kapke, Alissa, Selewski, David T., Dietrich, Xue, Abbott, Kevin, Nallamothu, Brahmajee K., Schaubel, Douglas E., Saran, Rajiv, and Gipson, Debbie S.
- Abstract
IMPORTANCE: Cardiovascular disease (CVD) is a leading cause of death among patients with end-stage renal disease (ESRD). Young adult (ages 22-29 years) have risks for ESRD-associated CVD that may vary from other ages. OBJECTIVE: To test the hypothesis that young adult–onset ESRD is associated with higher cardiovascular (CV) hospitalizations and mortality with different characteristics than childhood-onset disease. DESIGN, SETTING, AND PARTICIPANTS: This population-based cohort study used the US Renal Data System to categorize patients who initiated ESRD care between 2003 and 2013 by age at ESRD onset (1-11, 12-21, and 22-29 years). Cardiovascular hospitalizations were identified via International Classification of Diseases, Ninth Revision discharge codes and CV mortality from the Centers for Medicare & Medicaid ESRD Death Notification Form. Patients were censored at death from non-CVD events, loss to follow-up, recovery, or survival to December 31, 2014. Adjusted proportional hazard models (95% CI) were fit to determine risk of CV hospitalization and mortality by age group. Data analysis occurred from May 2016 and December 2017. EXPOSURES: Onset of ESRD. MAIN OUTCOMES AND MEASURES: Cardiovascular mortality and hospitalization. RESULTS: A total of 33 156 patients aged 1 to 29 years were included in the study population. Young adults (aged 22-29 years) had a 1-year CV hospitalization rate of 138 (95% CI, 121-159) per 1000 patient-years. Young adults had a higher risk for CV hospitalization than children (aged 1-11 years; hazard ratio [HR], 0.41 [95% CI, 0.26-0.64]) and adolescents (aged 12-21 years; HR, 0.86 [95% CI, 0.77-0.97]). Of 4038 deaths in young adults, 1577 (39.1%) were owing to CVD. Five-year cumulative incidence of mortality in this group (7.3%) was higher than in younger patients (adolescents, 4.0%; children, 1.7%). Adjusted HRs for CV mortality were higher for young adults with all causes of ESRD than children (cystic, hereditary, and congenital conditions: HR, 0.22 [95% CI, 0.11-0.46]; P < .001; glomerulonephritis: HR, 0.21 [95% CI, 0.10-0.44]; P < .001; other conditions: HR, 0.33 [95% CI, 0.23-0.49]; P < .001). Adolescents had a lower risk for CV mortality than young adults for all causes of ESRD except glomerulonephritis (cystic, hereditary, and congenital conditions: HR, 0.45 [95% CI, 0.27-0.74]; glomerulonephritis: HR, 0.99 [95% CI, 0.76-1.11]; other: HR, 0.47 [95% CI, 0.40-0.57]). Higher risks for CV hospitalization and mortality were associated with lack of preemptive transplant compared with hemodialysis (hospital: HR, 14.24 [95% CI, 5.92-34.28]; mortality: HR, 13.64 [95% CI, 8.79-21.14]) and peritoneal dialysis [hospital: HR, 8.47 [95% CI, 3.50-20.53]; mortality: HR, 7.86 [95% CI, 4.96-12.45]). Nephrology care before ESRD was associated with lower risk for CV mortality (HR, 0.77 [95% CI, 0.70-0.85]). CONCLUSIONS AND RELEVANCE: Cardiovascular disease accounted for nearly 40% of deaths in young adults with incident ESRD in this cohort. Identified risk factors may inform development of age-appropriate ESRD strategies to improve the CV health of this population.
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- 2019
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43. The Discovery of N-(1-Methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl)-5-((6- ((methylamino)methyl)pyrimidin-4-yl)oxy)-1H-indole-1-carboxamide (Acrizanib), a VEGFR-2 Inhibitor Specifically Designed for Topical Ocular Delivery, as a Therapy for Neovascular Age-Related Macular Degeneration
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Adams, Christopher M., Anderson, Karen, Artman, Gerald, Bizec, Jean-Claude, Cepeda, Rosemarie, Elliott, Jason, Fassbender, Elizabeth, Ghosh, Malay, Hanks, Shawn, Hardegger, Leo A., Hosagrahara, Vinayak P., Jaffee, Bruce, Jendza, Keith, Ji, Nan, Johnson, Leland, Lee, Wendy, Liu, Donglei, Liu, Fang, Long, Debby, Ma, Fupeng, Mainolfi, Nello, Meredith, Erik L., Miranda, Karl, Peng, Yao, Poor, Stephen, Powers, James, Qiu, Yubin, Rao, Chang, Shen, Siyuan, Sivak, Jeremy M., Solovay, Catherine, Tarsa, Peter, Woolfenden, Amber, Zhang, Chun, and Zhang, Yiqin
- Abstract
A noninvasive topical ocular therapy for the treatment of neovascular or “wet” age-related macular degeneration would provide a patient administered alternative to the current standard of care, which requires physician administered intravitreal injections. This manuscript describes a novel strategy for the use of in vivo models of choroidal neovascularization (CNV) as the primary means of developing SAR related to efficacy from topical administration. Ultimately, this effort led to the discovery of acrizanib (LHA510), a small-molecule VEGFR-2 inhibitor with potency and efficacy in rodent CNV models, limited systemic exposure after topical ocular administration, multiple formulation options, and an acceptable rabbit ocular PK profile.
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- 2024
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44. Impact of Anesthesia on Long-term Outcomes in Patients With Supratentorial High-grade Glioma Undergoing Tumor Resection: A Retrospective Cohort Study
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Dong, Jia, Zeng, Min, Ji, Nan, Hao, Shuyu, Zhou, Yang, Gao, Zhixian, Gu, Hongqiu, Zhang, Li, Ma, Daqing, Peng, Yuming, and Han, Ruquan
- Abstract
Supplemental Digital Content is available in the text.
- Published
- 2024
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45. Multi-Shell Nanourchin-Integrated Dual Mode Lateral Flow Immunoassay for Sensitive and Rapid Detection of Clinical Cardiac Myosin-Binding Protein C
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Xu, Xuan, Yue, Shuzhen, Tu, Keke, Yuan, Baozhen, Bi, Sai, Yu, Jinjin, Qiu, Hui, Zhang, Haotian, Zhang, Lei, Wu, Heng-Fang, Chen, Xiang-Jian, Zhao, Sheng, Zhang, Wei, Zhang, Ji-Nan, Jiang, Li-Ping, Zhang, Jian-Rong, and Zhu, Jun-Jie
- Abstract
Cardiac myosin-binding protein C (cMyBP-C) is a novel cardiac marker of acute myocardial infarction (AMI) and acute cardiac injuries (ACI). Construction of point-of-care testing techniques capable of sensing cMyBP-C with high sensitivity and precision is urgently needed. Herein, we synthesized an Au@NGQDs@Au/Ag multi-shell nanoUrchins (MSNUs), and then applied it in a colorimetric/SERS dual-mode immunoassay for detection of cMyBP-C. The MSNUs displayed superior stability, colorimetric brightness, and SERS enhancement ability with an enhanced factor of 5.4 × 109, which were beneficial to improve the detection capability of test strips. The developed MSNU-based test strips can achieve an ultrasensitive immunochromatographic assay of cMyBP-C in both colorimetric and SERS modes with the limits of detection as low as 19.3 and 0.77 pg/mL, respectively. Strikingly, this strip was successfully applied to analyze actual plasma samples with significantly better sensitivity, negative predictive value, and accuracy than commercially available gold test strips. Notably, this method possessed a wide range of application scenarios via combining with a color recognizer application named Color Grab on the smartphone, which can meet various needs of different users. Overall, our MSNU-based test strip as a mobile health monitoring tool shows excellent sensitivity, reproducibility, and rapid detection of the cMyBP-C, which holds great potential for the early clinic diagnosis of AMI and ACI.
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- 2024
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46. In Response
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Han, Xueye, Ren, Tong, Wang, Yang, Ji, Nan, and Luo, Fang
- Published
- 2023
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47. Continuous Low-Dose Everolimus Shrinkage Tuberous Sclerosis Complex-Associated Renal Angiomyolipoma: A 48-Month Follow-up Study
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Wei, Chang-Ching, Tsai, Jeng-Daw, Sheu, Ji-Nan, Chen, Sung-Lang, Tsao, Teng-Fu, Yang, Sheng-Hui, and Tsai, Jeng-Dau
- Abstract
Tuberous sclerosis complex (TSC) is a rare disease that causes multisystem benign neoplasm, induced by dysregulation of the mammalian target of the rapamycin pathway (mTOR). This study aimed to examine the effects of continuous low-dose everolimus, a potent and selective inhibitor of mTOR, on the treatment of TSC-associated renal angiomyolipoma (AML). Between July 2013 and August 2017, 11 patients with TSC-AML were enrolled for an everolimus therapy protocol. An oral everolimus dose starting at 2.5?mg daily was gradually increased to 5.0?mg daily. All patients were evaluated using MRI or CT scanning at baseline, 12, 24, 36 and 48 months after the start of treatment for measuring changes of renal AML mass volume. Everolimus therapy resulted in significant shrinkage of TSC-AML volume after 48 months follow-up. Serum levels of everolimus were subdivided into group I (<8?ng/mL, n=6) and group II (>8?ng/mL, n=5). The volume reduction rates were 10.6%–65.2% in group I and 42.5%–70.6% in group II. To evaluate the response to treatment, three of six (50%) were responders in group I, and all the patients in group II (5/5, 100%) were responders. The differences in AML volume reduction between the groups were statistically significant at 12 months (p=0.011), 24 months (p=0006), 36 months (p=0.014) and 48 months (p=0.05). These results suggest that continuous low-dose everolimus therapy (2.5–5?mg daily) might be effective in shrinking TSC-AML volume and minimizes adverse effects and subsequent reducing medical costs.
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- 2019
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48. Nitrates Induced Stress Corrosion Cracking in Tubing Connections from Oil Well
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Wang, Peng, Gao, Gang, Xiong, Mao Xian, Ji, Nan, Wang, Xin Hu, and Feng, Yao Rong
- Abstract
The 110 Ksi tubing failed in use when reservoir acidification reconstruction and production testing were performed in an oil well, which were longitudinal cracking of coupling. Failure analysis was conducted on the coupling. The failure zone was studied by means of macroscopic analysis, metallographic, scanning electronic microscope,energy dispersive spectrometer and X-ray diffraction analysis etc. The results indicated that the failure of the coupling is caused by stress corrosion cracking (SCC). SCC initiated from the exterior surface of coupling and displayed the fracture feature of intergranular crack propagation. The corrosion products at the grain boundaries were found to be mainly some oxides. The failure was in connection with the completion fluid composition, which are mainly nitrates.
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- 2019
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49. Continuous low-dose everolimus shrinkage tuberous sclerosis complex-associated renal angiomyolipoma: a 48-month follow-up study
- Author
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Wei, Chang-Ching, Tsai, Jeng-Daw, Sheu, Ji-Nan, Chen, Sung-Lang, Tsao, Teng-Fu, Yang, Sheng-Hui, and Tsai, Jeng-Dau
- Abstract
Tuberous sclerosis complex (TSC) is a rare disease that causes multisystem benign neoplasm, induced by dysregulation of the mammalian target of the rapamycin pathway (mTOR). This study aimed to examine the effects of continuous low-dose everolimus, a potent and selective inhibitor of mTOR, on the treatment of TSC-associated renal angiomyolipoma (AML). Between July 2013 and August 2017, 11 patients with TSC-AML were enrolled for an everolimus therapy protocol. An oral everolimus dose starting at 2.5 mg daily was gradually increased to 5.0 mg daily. All patients were evaluated using MRI or CT scanning at baseline, 12, 24, 36 and 48 months after the start of treatment for measuring changes of renal AML mass volume. Everolimus therapy resulted in significant shrinkage of TSC-AML volume after 48 months follow-up. Serum levels of everolimus were subdivided into group I (<8 ng/mL, n=6) and group II (>8 ng/mL, n=5). The volume reduction rates were 10.6%–65.2% in group I and 42.5%–70.6% in group II. To evaluate the response to treatment, three of six (50%) were responders in group I, and all the patients in group II (5/5, 100%) were responders. The differences in AML volume reduction between the groups were statistically significant at 12 months (p=0.011), 24 months (p=0006), 36 months (p=0.014) and 48 months (p=0.05). These results suggest that continuous low-dose everolimus therapy (2.5–5 mg daily) might be effective in shrinking TSC-AML volume and minimizes adverse effects and subsequent reducing medical costs.
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- 2019
- Full Text
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50. Combined 68Ga-NOTA-PRGD2 and 18F-FDG PET/CT Can Discriminate Uncommon Meningioma Mimicking High-Grade Glioma
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Li, Deling, Zhang, Jingjing, Ji, Nan, Zhao, Xiaobin, Zheng, Kun, Qiao, Zhen, Li, Fang, Lang, Lixin, Iagaru, Andrei, Niu, Gang, Zhu, Zhaohui, and Chen, Xiaoyuan
- Published
- 2018
- Full Text
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