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Qiu Y, Pei D, Wang M, Wang Q, Duan W, Wang L, Liu K, Guo Y, Luo L, Guo Z, Guan F, Wang Z, Xing A, Liu Z, Ma Z, Jiang G, Yan D, Liu X, Zhang Z, Wang W. Nuclear autoantigenic sperm protein facilitates glioblastoma progression and radioresistance by regulating the ANXA2/STAT3 axis. CNS Neurosci Ther 2024; 30:e14709. [PMID: 38605477 PMCID: PMC11009454 DOI: 10.1111/cns.14709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/28/2024] [Accepted: 03/15/2024] [Indexed: 04/13/2024] Open
Abstract
AIMS Although radiotherapy is a core treatment modality for various human cancers, including glioblastoma multiforme (GBM), its clinical effects are often limited by radioresistance. The specific molecular mechanisms underlying radioresistance are largely unknown, and the reduction of radioresistance is an unresolved challenge in GBM research. METHODS We analyzed and verified the expression of nuclear autoantigenic sperm protein (NASP) in gliomas and its relationship with patient prognosis. We also explored the function of NASP in GBM cell lines. We performed further mechanistic experiments to investigate the mechanisms by which NASP facilitates GBM progression and radioresistance. An intracranial mouse model was used to verify the effectiveness of combination therapy. RESULTS NASP was highly expressed in gliomas, and its expression was negatively correlated with the prognosis of glioma. Functionally, NASP facilitated GBM cell proliferation, migration, invasion, and radioresistance. Mechanistically, NASP interacted directly with annexin A2 (ANXA2) and promoted its nuclear localization, which may have been mediated by phospho-annexin A2 (Tyr23). The NASP/ANXA2 axis was involved in DNA damage repair after radiotherapy, which explains the radioresistance of GBM cells that highly express NASP. NASP overexpression significantly activated the signal transducer and activator of transcription 3 (STAT3) signaling pathway. The combination of WP1066 (a STAT3 pathway inhibitor) and radiotherapy significantly inhibited GBM growth in vitro and in vivo. CONCLUSION Our findings indicate that NASP may serve as a potential biomarker of GBM radioresistance and has important implications for improving clinical radiotherapy.
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Affiliation(s)
- Yuning Qiu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
- Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanChina
| | - Dongling Pei
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Minkai Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Qimeng Wang
- Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanChina
- Department of PathologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Wenchao Duan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Li Wang
- Department of PathologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Kehan Liu
- Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanChina
- Department of PathologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Yu Guo
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Lin Luo
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Zhixuan Guo
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Fangzhan Guan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Zilong Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Aoqi Xing
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Zhongyi Liu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Zeyu Ma
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Guozhong Jiang
- Department of PathologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Dongming Yan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Xianzhi Liu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Zhenyu Zhang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Weiwei Wang
- Department of PathologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina
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Guan F, Wang Z, Qiu Y, Guo Y, Pei D, Wang M, Xing A, Liu Z, Yu B, Cheng J, Liu X, Ji Y, Yan D, Yan J, Zhang Z. Biological underpinnings of radiomic magnetic resonance imaging phenotypes for risk stratification in IDH wild-type glioblastoma. J Transl Med 2023; 21:841. [PMID: 37993907 PMCID: PMC10664532 DOI: 10.1186/s12967-023-04551-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 09/22/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND To develop and validate a conventional MRI-based radiomic model for predicting prognosis in patients with IDH wild-type glioblastoma (GBM) and reveal the biological underpinning of the radiomic phenotypes. METHODS A total of 801 adult patients (training set, N = 471; internal validation set, N = 239; external validation set, N = 91) diagnosed with IDH wild-type GBM were included. A 20-feature radiomic risk score (Radscore) was built for overall survival (OS) prediction by univariate prognostic analysis and least absolute shrinkage and selection operator (LASSO) Cox regression in the training set. GSEA and WGCNA were applied to identify the intersectional pathways underlying the prognostic radiomic features in a radiogenomic analysis set with paired MRI and RNA-seq data (N = 132). The biological meaning of the conventional MRI sequences was revealed using a Mantel test. RESULTS Radscore was demonstrated to be an independent prognostic factor (P < 0.001). Incorporating the Radscore into a clinical model resulted in a radiomic-clinical nomogram predicting survival better than either the Radscore model or the clinical model alone, with better calibration and classification accuracy (a total net reclassification improvement of 0.403, P < 0.001). Three pathway categories (proliferation, DNA damage response, and immune response) were significantly correlated with the prognostic radiomic phenotypes. CONCLUSION Our findings indicated that the prognostic radiomic phenotypes derived from conventional MRI are driven by distinct pathways involved in proliferation, DNA damage response, and immunity of IDH wild-type GBM.
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Affiliation(s)
- Fangzhan Guan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zilong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yuning Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yu Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Dongling Pei
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Minkai Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Aoqi Xing
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhongyi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Bin Yu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Jingliang Cheng
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xianzhi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yuchen Ji
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Dongming Yan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
| | - Jing Yan
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
| | - Zhenyu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
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Wang Z, Guan F, Duan W, Guo Y, Pei D, Qiu Y, Wang M, Xing A, Liu Z, Yu B, Zheng H, Liu X, Yan D, Ji Y, Cheng J, Yan J, Zhang Z. Diffusion tensor imaging-based machine learning for IDH wild-type glioblastoma stratification to reveal the biological underpinning of radiomic features. CNS Neurosci Ther 2023; 29:3339-3350. [PMID: 37222229 PMCID: PMC10580329 DOI: 10.1111/cns.14263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/09/2023] [Accepted: 05/03/2023] [Indexed: 05/25/2023] Open
Abstract
INTRODUCTION This study addresses the lack of systematic investigation into the prognostic value of hand-crafted radiomic features derived from diffusion tensor imaging (DTI) in isocitrate dehydrogenase (IDH) wild-type glioblastoma (GBM), as well as the limited understanding of the biological interpretation of individual DTI radiomic features and metrics. AIMS To develop and validate a DTI-based radiomic model for predicting prognosis in patients with IDH wild-type GBM and reveal the biological underpinning of individual DTI radiomic features and metrics. RESULTS The DTI-based radiomic signature was an independent prognostic factor (p < 0.001). Incorporating the radiomic signature into a clinical model resulted in a radiomic-clinical nomogram that predicted survival better than either the radiomic model or clinical model alone, with a better calibration and classification accuracy. Four categories of pathways (synapse, proliferation, DNA damage response, and complex cellular functions) were significantly correlated with the DTI-based radiomic features and DTI metrics. CONCLUSION The prognostic radiomic features derived from DTI are driven by distinct pathways involved in synapse, proliferation, DNA damage response, and complex cellular functions of GBM.
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Affiliation(s)
- Zilong Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Fangzhan Guan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Wenchao Duan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Yu Guo
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Dongling Pei
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Yuning Qiu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Minkai Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Aoqi Xing
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Zhongyi Liu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Bin Yu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Hongwei Zheng
- Department of MRIThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Xianzhi Liu
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Dongming Yan
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Yuchen Ji
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Jingliang Cheng
- Department of MRIThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Jing Yan
- Department of MRIThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Zhenyu Zhang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
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Wang W, Zhao Y, Teng L, Yan J, Guo Y, Qiu Y, Ji Y, Yu B, Pei D, Duan W, Wang M, Wang L, Duan J, Sun Q, Wang S, Duan H, Sun C, Guo Y, Luo L, Guo Z, Guan F, Wang Z, Xing A, Liu Z, Zhang H, Cui L, Zhang L, Jiang G, Yan D, Liu X, Zheng H, Liang D, Li W, Li ZC, Zhang Z. Neuropathologist-level integrated classification of adult-type diffuse gliomas using deep learning from whole-slide pathological images. Nat Commun 2023; 14:6359. [PMID: 37821431 PMCID: PMC10567721 DOI: 10.1038/s41467-023-41195-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/16/2023] [Indexed: 10/13/2023] Open
Abstract
Current diagnosis of glioma types requires combining both histological features and molecular characteristics, which is an expensive and time-consuming procedure. Determining the tumor types directly from whole-slide images (WSIs) is of great value for glioma diagnosis. This study presents an integrated diagnosis model for automatic classification of diffuse gliomas from annotation-free standard WSIs. Our model is developed on a training cohort (n = 1362) and a validation cohort (n = 340), and tested on an internal testing cohort (n = 289) and two external cohorts (n = 305 and 328, respectively). The model can learn imaging features containing both pathological morphology and underlying biological clues to achieve the integrated diagnosis. Our model achieves high performance with area under receiver operator curve all above 0.90 in classifying major tumor types, in identifying tumor grades within type, and especially in distinguishing tumor genotypes with shared histological features. This integrated diagnosis model has the potential to be used in clinical scenarios for automated and unbiased classification of adult-type diffuse gliomas.
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Affiliation(s)
- Weiwei Wang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuanshen Zhao
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lianghong Teng
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jing Yan
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yang Guo
- Department of Neurosurgery, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Yuning Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuchen Ji
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bin Yu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongling Pei
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenchao Duan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Minkai Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Li Wang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jingxian Duan
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qiuchang Sun
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shengnan Wang
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Huanli Duan
- Department of Pathology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chen Sun
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yu Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lin Luo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhixuan Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fangzhan Guan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zilong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Aoqi Xing
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhongyi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hongyan Zhang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Li Cui
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lan Zhang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Guozhong Jiang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongming Yan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xianzhi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hairong Zheng
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- University of Chinese Academy of Sciences, Beijing, China
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, China
- National Innovation Center for Advanced Medical Devices, Shenzhen, China
| | - Dong Liang
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- University of Chinese Academy of Sciences, Beijing, China
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, China
- National Innovation Center for Advanced Medical Devices, Shenzhen, China
| | - Wencai Li
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - Zhi-Cheng Li
- Institute of Biomedical and Health Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
- University of Chinese Academy of Sciences, Beijing, China.
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, China.
- National Innovation Center for Advanced Medical Devices, Shenzhen, China.
| | - Zhenyu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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Guo Y, Ma Z, Pei D, Duan W, Guo Y, Liu Z, Guan F, Wang Z, Xing A, Guo Z, Luo L, Wang W, Yu B, Zhou J, Ji Y, Yan D, Cheng J, Liu X, Yan J, Zhang Z. Improving Noninvasive Classification of Molecular Subtypes of Adult Gliomas With Diffusion-Weighted MR Imaging: An Externally Validated Machine Learning Algorithm. J Magn Reson Imaging 2023; 58:1234-1242. [PMID: 36727433 DOI: 10.1002/jmri.28630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/20/2023] [Accepted: 01/20/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Genetic testing for molecular markers of gliomas sometimes is unavailable because of time-consuming and expensive, even limited tumor specimens or nonsurgery cases. PURPOSE To train a three-class radiomic model classifying three molecular subtypes including isocitrate dehydrogenase (IDH) mutations and 1p/19q-noncodeleted (IDHmut-noncodel), IDH wild-type (IDHwt), IDH-mutant and 1p/19q-codeleted (IDHmut-codel) of adult gliomas and investigate whether radiomic features from diffusion-weighted imaging (DWI) could bring additive value. STUDY TYPE Retrospective. POPULATION A total of 755 patients including 111 IDHmut-noncodel, 571 IDHwt, and 73 IDHmut-codel cases were divided into training (n = 480) and internal validation set (n = 275); 139 patients including 21 IDHmut-noncodel, 104 IDHwt, and 14 IDHmut-codel cases were utilized as external validation set. FIELD STRENGTH/SEQUENCE A 1.5 T or 3.0 T/multiparametric MRI, including T1-weighted (T1), T1-weighted gadolinium contrast-enhanced (T1c), T2-weighted (T2), fluid attenuated inversion recovery (FLAIR), and DWI. ASSESSMENT The performance of multiparametric radiomic model (random-forest model) using 22 selected features from T1, T2, FLAIR, T1c images and apparent diffusion coefficient (ADC) maps, and conventional radiomic model using 20 selected features from T1, T2, FLAIR, and T1c images was assessed in internal and external validation sets by comparing probability values and actual incidence. STATISTICAL TESTS Mann-Whitney U test, Chi-Squared test, Wilcoxon test, receiver operating curve (ROC), and area under the curve (AUC); DeLong analysis. P < 0.05 was statistically significant. RESULTS The multiparametric radiomic model achieved AUC values for IDHmut-noncodel, IDHwt, and IDHmut-codel of 0.8181, 0.8524, and 0.8502 in internal validation set and 0.7571, 0.7779, and 0.7491 in external validation set, respectively. Multiparametric radiomic model showed significantly better diagnostic performance after DeLong analysis, especially in classifying IDHwt and IDHmut-noncodel subtypes. DATA CONCLUSION Radiomic features from DWI could bring additive value and improve the performance of conventional MRI-based radiomic model for classifying the molecular subtypes especially IDHmut-noncodel and IDHwt of adult gliomas. LEVEL OF EVIDENCE: 3 TECHNICAL EFFICACY Stage 2.
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Affiliation(s)
- Yang Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Department of Neurosurgery, The Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Zeyu Ma
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongling Pei
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenchao Duan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yu Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhongyi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fangzhan Guan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zilong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Aoqi Xing
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhixuan Guo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lin Luo
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Weiwei Wang
- Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bin Yu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jinqiao Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuchen Ji
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongming Yan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jingliang Cheng
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xianzhi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Yan
- Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhenyu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Killian M, Tian S, Xing A, Gupta D, He Z. Predicting Health Outcomes Using Machine Learning in Pediatric Heart Transplantation Using UNOS Data. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Arumugam S, Udovitch M, Xing A, Begg J, Holloway L, Sidhom M. Assessment of Intra-Fraction Prostate Motion and Delivered Dose Accuracy in Prostate SBRT Using an in-House Real-Time Position Monitoring System. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Deshpande S, Blake SJ, Xing A, Metcalfe PE, Holloway LC, Vial P. A simple model for transit dosimetry based on a water equivalent EPID. Med Phys 2018; 45:1266-1275. [DOI: 10.1002/mp.12742] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 11/10/2017] [Accepted: 12/18/2017] [Indexed: 01/20/2023] Open
Affiliation(s)
- S. Deshpande
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
- Centre for Medical Radiation Physics; University of Wollongong; Wollongong NSW 2522 Australia
| | - S. J. Blake
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
- School of Physics; Institute of Medical Physics; University of Sydney; Sydney NSW 2006 Australia
| | - A. Xing
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
| | - P. E. Metcalfe
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
- Centre for Medical Radiation Physics; University of Wollongong; Wollongong NSW 2522 Australia
| | - L. C. Holloway
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
- Centre for Medical Radiation Physics; University of Wollongong; Wollongong NSW 2522 Australia
- School of Physics; Institute of Medical Physics; University of Sydney; Sydney NSW 2006 Australia
- School of Medicine; South West Sydney Clinical School; University of NSW; Liverpool NSW 2052 Australia
| | - P. Vial
- Liverpool and Macarthur Cancer Therapy Centres and Ingham Institute; Liverpool NSW 2170 Australia
- School of Physics; Institute of Medical Physics; University of Sydney; Sydney NSW 2006 Australia
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Sankar A, Holloway L, Truant D, Xing A, Karen L, Walis A, Grand M, Sidhom M. EP-1623: SeedTracker: Enabling real time position monitoring with a conventional linacs for prostate SBRT. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32058-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Du F, Zhang Z, Gao T, Liu Z, Jia H, Xing A, Du B, Sun Q, Cao T, Zhang Z. Diagnosis of latent tuberculosis by ELISPOT assay and tuberculin skin test. Med Mal Infect 2016; 46:150-3. [PMID: 27021933 DOI: 10.1016/j.medmal.2016.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 02/25/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To determine the prevalence of latent tuberculosis infection (LTBI) in college students. PATIENTS AND METHODS Four hundred and twenty newly admitted college students were enrolled. The Enzyme-Linked ImmunoSpot assay (ELISPOT) was used. Overall, 171 students with ELISPOT assay+/TST+ were monitored for three years to detect active TB disease. RESULTS The overall positive rate of ELISPOT assay was 40.7% among TST+ students. The ELISPOT positive rates were 36.9%, 45.4%, and 64.3% in groups of TST induration of 10-14mm, 15-20mm, and ≥20mm, respectively, with a significant difference (χ(2)=10.136, P<0.01) but no significant difference between BCG scar and no scar (41.2% vs. 38.8%; P>0.05). None of the 171 untreated students contracted active TB within the three-year monitoring period. CONCLUSION The LTBI rate might be overestimated by TST compared with interferon-γ release assays. On the basis of a close monitoring, few students developed active TB despite a positive result to the TST and ELISPOT assay.
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Affiliation(s)
- F Du
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - Z Zhang
- Changping Tuberculosis Prevent and Control Institute of Beijing, 102206 Beijing, China
| | - T Gao
- Changping Tuberculosis Prevent and Control Institute of Beijing, 102206 Beijing, China
| | - Z Liu
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - H Jia
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - A Xing
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - B Du
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - Q Sun
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - T Cao
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China
| | - Z Zhang
- Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, 101149 Beijing, China.
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Ding X, Zheng X, Xing A, Wang D, Qi S, Wu Y, Li H, Wu S, Hong J. High risk factors of atrial fibrillation in type 2 diabetes: results from the Chinese Kailuan study. QJM 2015; 108:885-90. [PMID: 25713423 DOI: 10.1093/qjmed/hcv051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The pathophysiological mechanisms for atrial fibrillation (AF) vulnerability in diabetic patients are largely unclear. AIM To investigate the high risk factors of AF in Chinese Kailuan diabetes. DESIGN A retrospective review of AF in Chinese Kailuan diabetes. METHODS Research and statistic analysis on the clinical data of 9050 diabetic patients from Kailuan Coal Mine Group Corporation who participated in a health survey from July 2006 to October 2007. RESULTS Sixty diabetic patients (50 males and 10 females) were diagnosed with AF during the health checkup, with a prevalence of 0.66% (0.67% in males and 0.62% in females). Univariate analysis showed that patients with AF were older and had higher levels of serum uric acid (UA), pulse pressure, serum c-reactive protein and anti-hypertensive medication usage, but lower levels of fasting blood glucose and triglycerides (TG). Multivariate analysis indicated that older age (OR = 1.09; 95% CI: 1.06-1.12), increased UA (OR = 1.01; 95% CI: 1.00-1.01) and decreased TG (OR = 0.71; 95% CI: 0.55-0.92) were independent predictive factors of AF after adjusting for other variables. After gender stratification, age and UA remained as independent predictive factors of AF in both male and female patients. However, TG had an independent inverse association with AF in male patients only. CONCLUSIONS Age and UA are independent predictive factors of AF in both male and female diabetic patients. TG is inversely correlated with AF in male diabetic patients only.
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Affiliation(s)
- X Ding
- From the Department of Endocrinology and Metabolism, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - X Zheng
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China, From the Department of Endocrinology and Metabolism, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - A Xing
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China
| | - D Wang
- Department of Cardiology, Bethune International Peace Hospital, Shijiazhuang, China and
| | - S Qi
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China
| | - Y Wu
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China
| | - H Li
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China
| | - S Wu
- Department of Cardiology, Kailuan General Hospital, Hebei Union University, Tangshan, China
| | - J Hong
- Department of Internal Medicine, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
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Yu H, Sun W, Yao Q, Xing A. Selective termination in discordant twin pregnancy with early onset preeclampsia: case report. CLIN EXP OBSTET GYN 2015. [DOI: 10.12891/ceog1898.2015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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13
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Arumugam S, Xing A, Young T, Blake S, Thwaites D, Holloway L. SU-F-BRB-09: Measurement Based Dose-Volume Metrics for the Quality Assurance of VMAT Plans-Are We There Yet? Med Phys 2015. [DOI: 10.1118/1.4925204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Arumugam S, Xing A, Vial P, Thwaites D, Holloway L. SU-E-T-76: A Software System to Monitor VMAT Plan Complexity in a Large Radiotherapy Centre. Med Phys 2015. [DOI: 10.1118/1.4924437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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15
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Yu H, Sun W, Yao Q, Xing A. Selective termination in discordant twin pregnancy with early onset preeclampsia: case report. CLIN EXP OBSTET GYN 2015; 42:696-697. [PMID: 26524830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To study the effectiveness of selective termination for discordant twins in treating early onset preeclampsia. MATERIALS AND METHODS After literature review, ethical review, and discussion with the couple, one patient with early onset preeclampsia complicated with a lethal condition in one twin, was performed selective termination by intracardiac injection of potassium chloride at 27 weeks' and four days' gestation in an effort to reverse preeclampsia and prolong the pregnancy. RESULTS The clinical manifestation of preeclampsia was alleviated in this patient. At 29 weeks, the stillborn fetus was delivered because of spontaneous preterm labor. A live birth was achieved five days later. All procedures allowed continuation of the pregnancy for an additional two weeks and one day of the remaining fetus. CONCLUSION Selective termination may be an option for treating early onset preeclampsia in discordant twins, instead of termination of whole pregnancy.
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Xing A, Deshpande S, Arumugam S, George A, Holloway L, Goozee G. SU-E-T-503: Development of a Software Tool for Verification of Delivered Tomotherapy Plans Using the Tomo Log File. Med Phys 2014. [DOI: 10.1118/1.4888836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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17
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Xing A, Arumugam S, Deshpande S, George A, Holloway L, Vial P, Goozee G. SU-E-T-407: Evaluation of Four Commercial Dosimetry Systems for Routine Patient-Specific Tomotherapy Delivery Quality Assurance. Med Phys 2014. [DOI: 10.1118/1.4888740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhou S, Yu P, Guan L, Xing A, Liu S, Xiong Q, Peng B. NOD1 expression elicited by iE-DAP in first trimester human trophoblast cells and its potential role in infection-associated inflammation. Eur J Obstet Gynecol Reprod Biol 2013; 170:318-23. [PMID: 24041848 DOI: 10.1016/j.ejogrb.2013.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 12/27/2012] [Accepted: 04/29/2013] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The underlying mechanisms of protective immunity of placental trophoblast cells against bacterial infection remain largely unknown. NOD1 are intracellular pattern recognition receptors that are activated by bacterial peptides and mediate innate immunity. This study aimed to investigate the expression and function of NOD1 in first trimester trophoblast cells, and evaluate the potential role of trophoblast cells in infection-associated inflammation. STUDY DESIGN Human extravillous trophoblast cell line HTR8 cells were stimulated with various concentrations of iE-DAP for various periods of time. NOD1 expression was detected by immunofluorescence, and the changes in NOD1 and RICK mRNA and protein in H8 cells were determined by real-time polymerase chain reaction and Western blot analysis. The concentrations of interleukin (IL)-8 and IL-6 secreted by H8 cells were examined by enzyme-linked immunosorbent assay. NF-κB transcription activity and P65 expression were detected by electrophoretic mobility shift assay and Western blot analysis. RESULTS H8 cells expressed NOD1, and the effects of iE-DAP on NOD1 were dose- and time-dependent. The concentration of IL-8 increased gradually with increasing concentration of iE-DAP, and the levels of IL-8 and IL-6 were associated with the duration of exposure to iE-DAP. The dose of iE-DAP was significantly associated with expression of RICK and P65, and stimulation of H8 cells by iE-DAP altered NF-κB transcription activity. CONCLUSIONS NOD1 may have a role in mediating infection-associated inflammation. Once iE-DAP is recognized by NOD1, the inflammatory response may be induced via NOD1-RICK-NF-κB-mediated pathways.
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Affiliation(s)
- S Zhou
- Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
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Arumugam S, Young T, Xing A, Holloway L. TU-C-108-09: What VMAT Delivery Errors Can Be Detected with Commercial Dosimetric Systems? - A Comparison of Three Dosimetric Systems. Med Phys 2013. [DOI: 10.1118/1.4815373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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20
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Deshpande S, George A, Xing A, Holloway L, Metcalfe P, Vial P, Geurts M. PO-0779: Sensitivity of three commercial dosimeters to delivery errors in helical tomotherapy. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33085-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Arumugam S, Xing A, Goozee G, Holloway L. EP-1509 ON THE SENSITIVITY OF PROSTATE RADIOTHERAPY TREATMENTS TO RANDOM UNCERTAINTIES; A COMPARISON OF TECHNIQUES. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71842-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Affiliation(s)
- S. J. Zweben
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08540
| | - R. A. Ellis
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08540
| | - P. Titus
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08540
| | - A. Xing
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08540
| | - H. Zhang
- Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08540
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Arumugam S, Xing A, Holloway L, Goozee G. SU-E-T-789: A Study on the Sensitivity of VMAT and IMRT Prostate Plans Considering Uncertainties in Treatment Delivery and Patient Positioning. Med Phys 2011. [DOI: 10.1118/1.3612753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Xing A, Wu L, Yang X. O1010 Bile acid transporters expression profile in human placenta with intrahepatic cholestasis of pregnancy. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61383-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wattanasin S, Weidmann B, Roche D, Myers S, Xing A, Guo Q, Sabio M, von Matt P, Hugo R, Maida S, Lake P, Weetall M. Design and synthesis of potent and selective inhibitors of integrin VLA-4. Bioorg Med Chem Lett 2001; 11:2955-8. [PMID: 11677134 DOI: 10.1016/s0960-894x(01)00586-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The synthesis and identification of a novel series of inhibitors of integrin VLA-4 are described. Their in vitro activity and selectivity against closely related integrins are also presented.
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Affiliation(s)
- S Wattanasin
- Novartis Institute for Biomedical Research, Novartis Pharmaceuticals Corporation, 556 Morris Avenue, Summit, NJ 07901, USA.
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Xing A, Boileau P, Caüzac M, Challier JC, Girard J, Hauguel-de Mouzon S. Comparative in vivo approaches for selective adenovirus-mediated gene delivery to the placenta. Hum Gene Ther 2000; 11:167-77. [PMID: 10646648 DOI: 10.1089/10430340050016247] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Gene delivery to the placenta is one potential way of specifically modifying placental biological processes and fetal development. The aim of this study was to determine the most efficient and least invasive route of placental adenovirus delivery. The feasibility of adenovirus-mediated gene transfer to the rat placenta was addressed by maternal intravenous or direct intraplacental injection of adenoviral vectors expressing the glucose transporter GLUT3, a noncirculating integral membrane protein. Both routes led to transgene expression in the placenta. However, direct intraplacental delivery on day 14 of gestation yielded a higher transduction efficiency than maternal intravenous administration, and markedly reduced transgene expression in maternal liver. Most importantly, the amount of the GLUT3 transgene and the adenovirus itself in fetal tissues was only 1 to 3% of that found in the placenta. These results indicate that the nature of the transgene and the route of adenovirus administration are key parameters in selective placental somatic gene transfer. This novel strategy may prove useful for modifying a placental function without altering the fetal genome.
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Affiliation(s)
- A Xing
- CNRS UPR-1524, Meudon, France
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Li C, Ma Y, Xing A, Gu S, Jia H, Chen X, Wei P. [Methodology of DNA fingerprinting and its application in identification of M. tuberculosis]. Zhonghua Jie He He Hu Xi Za Zhi 1999; 22:142-4. [PMID: 11812364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To explore methodology of DNA fingerprinting technique and its application in identification of strains of M. tuberculosis. METHODS This research was based on different copy numbers and location of chromosome DNA IS6110 in M. tuberculosis genome. After DNA of M. tuberculosis were cut by endonuclease PvuII, the products were transferred to nylon membrane, then detected and hybridized by enhanced chemiluminescent (ECL) labeling techniques. RESULTS Fifty clinical isolates from different TB patients had unidentical DNA fingerprinting patterns. DNA fingerprinting patterns showed a great difference from sputum and pus specimens of the same patient. H(37) R(v) ofloxacin resistant and sensitive strains had an identical DNA fingerprinting pattern. CONCLUSIONS Identification of M. tuberculosis strains is feasible by DNA fingerprinting technique.
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Affiliation(s)
- C Li
- Beijing Tuberculosis & Thoracic Tumor Institute, Beijing 101149
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Cheng M, Jarret RL, Li Z, Xing A, Demski JW. Production of fertile transgenic peanut (Arachis hypogaea L.) plants using Agrobacterium tumefaciens. Plant Cell Rep 1996; 15:653-7. [PMID: 24178604 DOI: 10.1007/bf00231918] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/1995] [Revised: 11/08/1995] [Indexed: 05/06/2023]
Abstract
Fertile transgenic plants of peanut (Arachis hypogaea L. cv. New Mexico Valencia A) were produced using an Agrobacterium-mediated transformation system. Leaf section explants were inoculated with A. tumefaciens strain EHA105 harboring the binary vector pBI121 containing the genes for β-glucuronidase (GUS) and neomycin phosphotransferase II (NPTII). Approximately 10% of the shoots regenerated on selection medium were GUS-positive. Five independent transformation events resulted in the production of 52 fertile transgenic peanut plants. On average, 240 d were required between seed germination for explant preparation and the production of mature t1 seed by T0 plants. Molecular analysis of transgenic plants confirmed the stable integration of the transgenes into the peanut genome. GUS expression segregated in a 3∶1 Mendelian ratio in most T1 generation plants.
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Affiliation(s)
- M Cheng
- Department of Plant Pathology, Georgia Station, University of Georgia, 1109 Experiment Street, 30223, Griffin, Georgia, USA
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Xing A, Wan B, Zeng W. [Biochemical effects of maternal intravenous and intra-amniotic infusion of amino-acids on fetal blood]. Hua Xi Yi Ke Da Xue Xue Bao 1994; 25:98-102. [PMID: 8070785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Before elective cesarean section, 58 normal term's pregnant women were randomly divided into three groups: intravenous (25 women), intra-amniotic (8 women) and control (25 women) groups. The first two groups received maternal intravenous and intra-amniotic infusion of amino acids respectively. The results showed that maternal intravenous administration of amino-acids led to increased levels of amino acids in maternal venous blood and fetal umbilical cord blood plasma (P < 0.05). There was no increase in fetal uptake of amino acids (P > 0.05). The levels of amino acids in fetal umbilical cord blood plasma of the intra-amniotic group were higher than those of the control group (P < 0.05) and intravenous group (P < 0.05). In the intra-amniotic group, the fetal uptake of amino acids increased (P < 0.05). There were no significant differences in fetal umbilical arterious pH, PO2 and PCO2 among the three groups (P > 0.2). Intra-amniotic infusion of 250ml amino-acids did not change the pressure of amniotic cavity (P > 0.2). The authors suggested that intra-amniotic infusion of amino acids, as a paraplacental nutritional route, should be more effective in the treatment for cases of intrauterine fetal growth retardation particularly for those accompanied by severe placental lesions.
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