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Wang N, Gao YY, Qi BQ, Ruan M, Lyu H, Zhang XY, Zhang RR, Liu TF, Chen YM, Zou Y, Guo Y, Yang WY, Zhang L, Zhu XF, Chen XJ. [Clinical features and prognostic analysis of testicular relapse in pediatric acute lymphoblastic leukemia]. Zhonghua Er Ke Za Zhi 2024; 62:262-267. [PMID: 38378289 DOI: 10.3760/cma.j.cn112140-20230816-00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Objective: To investigate the clinical features and prognosis of testicular relapse in pediatric acute lymphoblastic leukemia (ALL). Methods: Clinical data including the age, time from initial diagnosis to recurrence, relapse site, and therapeutic effect of 37 pediatric ALL with testicular relapse and treated in Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences between November 2011 and December 2022 were analyzed retrospectively. Patients were grouped according to different clinical data. Kaplan-Meier analysis was used to evaluate the overall survival (OS) rate and event free survival (EFS) rate for univariate analysis, and Cox proportional-hazards regression model was used to evaluate the influencing factors of OS rate and EFS rate for multivariate analysis. Results: The age at initial diagnosis of 37 pediatric testicular relapse patients was (5±3) years and the time from initial diagnosis to testicular recurrence was (37±15) months. The follow-up time was 43 (22, 56) months. Twenty-three patients (62%) were isolated testis relapse. The 5-year OS rate and EFS rate of the 37 relapsed children were (60±9) % and (50±9) % respectively. Univariate analysis showed that the 2-year EFS rate in the group of patients with time from initial diagnosis to testicular recurrence >28 months was significantly higher than those ≤28 months ((69±10)% vs. (11±11)%, P<0.05), 2-year EFS rate of the isolated testicular relapse group was significantly higher than combined relapse group ((66±11)% vs. (20±13) %, P<0.05), 2-year EFS rate of chimeric antigen receptor T (CAR-T) cell treatment after relapse group was significantly higher than without CAR-T cell treatment after relapse group ((78±10)% vs. (15±10)%, P<0.05). ETV6-RUNX1 was the most common genetic aberration in testicular relapsed ALL (38%, 14/37). The 4-year OS and EFS rate of patients with ETV6-RUNX1 positive were (80±13) % and (64±15) %, respectively. Multivariate analysis identified relapse occurred≤28 months after first diagnosis (HR=3.09, 95%CI 1.10-8.72), combined relapse (HR=4.26, 95%CI 1.34-13.52) and CAR-T cell therapy after relapse (HR=0.15,95%CI 0.05-0.51) were independent prognostic factors for 2-year EFS rate (all P<0.05). Conclusions: The outcome of testicular relapse in pediatric ALL was poor. They mainly occurred 3 years after initial diagnosis. ETV6-RUNX1 is the most common abnormal gene.Patients with ETV6-RUNX1 positive often have a favorable outcome. Early relapse and combined relapse indicate unfavorable prognosis, while CAR-T cell therapy could significantly improve the survival rate of children with testicular recurrence.
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Affiliation(s)
- N Wang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y Y Gao
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - B Q Qi
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - M Ruan
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - H Lyu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X Y Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - R R Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - T F Liu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y M Chen
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y Zou
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y Guo
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - W Y Yang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - L Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X F Zhu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X J Chen
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
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Zhang RR, Ruan M, Liu TF, Wang SC, Zhang XY, Qi BQ, Zhu XF, Zhang L. [Clinical and prognostic characteristics of pediatric acute myeloid leukemia with myelodysplasia-related changes under different diagnostic criteria]. Zhonghua Er Ke Za Zhi 2024; 62:250-255. [PMID: 38378287 DOI: 10.3760/cma.j.cn112140-20230724-00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Objective: To evaluate the clinical and prognostic differences in acute myeloid leukemia with myelodysplasia-related changes (AML-MRC) children under different diagnostic criteria (World Health Organization (WHO) 2016 and WHO 2022 criteria). Methods: In this retrospective cohort study, clinical characteristics and prognosis information of 260 acute myeloid leukemia (AML) children admitted to Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences from August 2017 to August 2021 were analyzed retrospectively. According to WHO 2016 and WHO 2022 diagnostic criteria, patients were divided into AML-MRC group and non-AML-MRC group, the prognostic and genetic differences between two groups were compared respectively. Meanwhile, the characteristics of children with 8 MRC-related genes defined in WHO 2022 diagnostic criteria were described. Mann-Whitney U test, chi-square test were used for comparison between groups. Survival curve was plotted by Kaplan-Meier method, and comparison between groups was performed by Log-Rank method. Results: Among the 260 children, there were 148 males and 112 females. The follow-up time was 26 (16, 38) months. A total of 28 children (10.8%) were diagnosed with AML-MRC according to the WHO 2016 diagnostic criteria. Compared with non-AML-MRC children, the frequency of PTPN11, RUNX11, SH2B3, MPL and STAG2 mutations was higher in AML-MRC children (25.0% (7/28) vs. 4.3% (10/232), 14.3% (4/28) vs. 3.9% (9/232), 10.7% (3/28) vs. 2.2% (5/232), 10.7% (3/28) vs. 2.2% (5/232), 10.7% (3/28) vs. 0.9% (2/232), all P<0.05). The 2-year overall survival (OS) and events free survival (EFS) rate of 28 AML-MRC children under WHO 2016 diagnostic criteria were worse than those of 232 non-AML-MRC children ((62.1±10.8)% vs. (94.5±1.6)%, χ2=22.1,P<0.001;(48.0±10.6)% vs. (70.9±3.2)%, χ2=6.33,P=0.012). Twenty-seven children (10.4%) were eventually diagnosed with AML-MRC according to WHO 2022 criteria, their 2-year OS rate were worse than 233 non-AML-MRC children ((60.8±11.1)% vs. (94.5±1.6)%, χ2=24.49,P<0.001), and there was no statistically significant difference in EFS rate between two groups at 2 years ((55.1±10.8)% vs. (70.1±3.2)%, χ2=2.44, P=0.119). Conclusions: Compared with the 2022 WHO diagnostic criteria, the survival rates of children with AML-MRC under the 2016 WHO diagnostic criteria were worse than that of children without MRC.The new version of the AML-MRC diagnostic criteria emphasizes the importance of genes.
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Affiliation(s)
- R R Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - M Ruan
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - T F Liu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - S C Wang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X Y Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - B Q Qi
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X F Zhu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - L Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
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Gao YY, Jia YJ, Qi BQ, Zhang XY, Chen YM, Zou Y, Guo Y, Yang WY, Zhang L, Wang SC, Zhang RR, Liu TF, Song Z, Zhu XF, Chen XJ. [Genomics of next generation sequencing in pediatric B-acute lymphoblastic leukemia and its impact on minimal residual disease]. Zhonghua Er Ke Za Zhi 2023; 61:527-532. [PMID: 37312464 DOI: 10.3760/cma.j.cn112140-20230417-00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To describe the gene mutation profile of newly diagnosed pediatric B-acute lymphoblastic leukemia (B-ALL) and analyze its effect on minimal residual disease (MRD). Methods: A total of 506 newly diagnosed B-ALL children treated in Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences from September 2018 to July 2021 were enrolled in this retrospective cohort study. The enrolled children were divided into MRD ≥1.00% group and <1.00% group according to MRD results on the 19th day since chemotherapy, and MRD ≥0.01% group and <0.01% group according to MRD results on the 46th day. Clinical characteristics and gene mutations of two groups were compared. Comparisons between groups were performed with chi-square test or Fisher's exact test. Independent risk factors of MRD results on the 19th day and the 46th day were analyzed by Logistic regression model. Results: Among all 506 patients, there were 318 males and 188 females. On the 19th day, there were 114 patients in the MRD ≥1.00% group and 392 patients in the MRD <1.00% group. On the 46th day, there were 76 patients in the MRD ≥0.01% group and 430 patients in the MRD <0.01% group. A total of 187 gene mutations were detected in 487 (96.2%) of 506 children. The most common gene mutations were signal transduction-related KRAS gene mutations in 111 cases (22.8%) and NRAS gene mutations in 99 cases (20.3%). Multivariate analysis showed that PTPN11 (OR=1.92, 95%CI 1.00-3.63), KMT2A (OR=3.51, 95%CI 1.07-11.50) gene mutations and TEL-AML1 (OR=0.48, 95%CI 0.27-0.87), BCR-ABL1 (OR=0.27, 95%CI 0.08-0.92) fusion genes and age >10 years (OR=1.91, 95%CI 1.12-3.24) were independent influencing factors for MRD ≥1.00% on the 19th day. BCORL1 (OR=2.96, 95%CI 1.18-7.44), JAK2 (OR=2.99, 95%CI 1.07-8.42) and JAK3 (OR=4.83, 95%CI 1.50-15.60) gene mutations and TEL-AML1 (OR=0.43, 95%CI 0.21-0.87) fusion gene were independent influencing factors for MRD ≥0.01% on the 46th day. Conclusions: Children with B-ALL are prone to genetic mutations, with abnormalities in the RAS signaling pathway being the most common. Signal transduction related PTPN11, JAK2 and JAK3 gene mutations, epigenetic related KMT2A gene mutation and transcription factor related BCORL1 gene mutation are independent risk factors for MRD.
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Affiliation(s)
- Y Y Gao
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y J Jia
- Next Generation Sequencing Preparatory Group, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - B Q Qi
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X Y Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y M Chen
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y Zou
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Y Guo
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - W Y Yang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - L Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - S C Wang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - R R Zhang
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - T F Liu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - Z Song
- Information and Resource Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X F Zhu
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
| | - X J Chen
- Pediatric Blood Diseases Center, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Tianjin Institutes of Health Science, Tianjin 300020, China
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Zhang RR, Choi C, Brunnquell CL, Hernandez R, Pinchuk AN, Grudzinski JG, Clark PA, McMillan AB, Audhya A, Jeffrey J, Kuo JS, Weichert JP. Next-Generation Cancer Magnetic Resonance Imaging With Tumor-Targeted Alkylphosphocholine Metal Analogs. Invest Radiol 2022; 57:655-663. [PMID: 36069439 PMCID: PMC9469686 DOI: 10.1097/rli.0000000000000893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES In an effort to exploit the elevated need for phospholipids displayed by cancer cells relative to normal cells, we have developed tumor-targeted alkylphosphocholines (APCs) as broad-spectrum cancer imaging and therapy agents. Radioactive APC analogs have exhibited selective uptake and prolonged tumor retention in over 50 cancer types in preclinical models, as well as over 15 cancer types in over a dozen clinical trials. To push the structural limits of this platform, we recently added a chelating moiety capable of binding gadolinium and many other metals for cancer-targeted magnetic resonance imaging (MRI), positron emission tomography imaging, and targeted radionuclide therapy. The aim of this work was to synthesize, characterize, and validate the tumor selectivity of a new broad-spectrum, tumor-targeted, macrocyclic MRI chelate, Gd-NM600, in xenograft and orthotopic tumor models. A secondary aim was to identify and track the in vivo chemical speciation and spatial localization of this new chelate Gd-NM600 in order to assess its Gd deposition properties. MATERIALS AND METHODS T1 relaxivities of Gd-NM600 were characterized in water and plasma at 1.5 T and 3.0 T. Tumor uptake and subcellular localization studies were performed using transmission electron microscopy. We imaged 8 different preclinical models of human cancer over time and compared the T1-weighted imaging results to that of a commercial macrocyclic Gd chelate, Gd-DOTA. Finally, matrix-assisted laser desorption and ionization-mass spectrometry imaging was used to characterize and map the tissue distribution of the chemical species of Gd-NM600. RESULTS Gd-NM600 exhibits high T1 relaxivity (approximately 16.4 s-1/mM at 1.5 T), excellent tumor uptake (3.95 %ID/g at 48 hours), prolonged tumor retention (7 days), and MRI conspicuity. Moreover, minimal tumor uptake saturability of Gd-NM600 was observed. Broad-spectrum tumor-specific uptake was demonstrated in 8 different human cancer models. Cancer cell uptake of Gd-NM600 via endosomal internalization and processing was revealed with transmission electron microscopy. Importantly, tissue mass spectrometry imaging successfully interrogated the spatial localization and chemical speciation of Gd compounds and also identified breakdown products of Gd species. CONCLUSIONS We have introduced a new macrocyclic cancer-targeted Gd chelate that achieves broad-spectrum tumor uptake and prolonged retention. Furthermore, we have demonstrated in vivo stability of Gd-NM600 by ultrahigh resolution MS tissue imaging. A tumor-targeted contrast agent coupled with the enhanced imaging resolution of MRI relative to positron emission tomography may transform oncologic imaging.
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Affiliation(s)
- Ray R Zhang
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
- Department of Neurological Surgery, University of Wisconsin
School of Medicine and Public Health, Madison, WI
| | - Cynthia Choi
- Department of Pharmaceutical Sciences, University of
Wisconsin School of Medicine and Public Health, Madison, WI
| | - Christina L Brunnquell
- Department of Medical Physics, University of Wisconsin
School of Medicine and Public Health, Madison, WI
- University of Washington, Dell Medical School, University
of Texas at Austin, Austin, TX
| | - Reinier Hernandez
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
- Department of Medical Physics, University of Wisconsin
School of Medicine and Public Health, Madison, WI
| | - Anatoly N Pinchuk
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
| | - Joseph G. Grudzinski
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
| | - Paul A Clark
- Department of Neurological Surgery, University of Wisconsin
School of Medicine and Public Health, Madison, WI
| | - Alan B McMillan
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
| | - Anjon Audhya
- Carbone Cancer Center, University of Wisconsin School of
Medicine and Public Health, Madison, WI
| | - Justin Jeffrey
- Carbone Cancer Center, University of Wisconsin School of
Medicine and Public Health, Madison, WI
| | - John S Kuo
- Department of Neurological Surgery, University of Wisconsin
School of Medicine and Public Health, Madison, WI
- Carbone Cancer Center, University of Wisconsin School of
Medicine and Public Health, Madison, WI
- Department of Neurosurgery, Dell Medical School, University
of Texas at Austin, Austin, TX
| | - Jamey P Weichert
- Department of Radiology, University of Wisconsin School of
Medicine and Public Health, Madison, WI
- Carbone Cancer Center, University of Wisconsin School of
Medicine and Public Health, Madison, WI
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Ma Q, Jia HY, Chang QL, Wang YD, Liang Y, Wang D, Zhang RR, Jiao YH. [Clinical characteristics and whole exome sequencing results of patients with Möbius syndrome]. Zhonghua Yan Ke Za Zhi 2022; 58:441-447. [PMID: 35692026 DOI: 10.3760/cma.j.cn112142-20220314-00108] [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: 06/15/2023]
Abstract
Objective: To analyze the clinical characteristics of patients with Möbius syndrome (MBS) and to explore likely pathogenic genes. Methods: Cross-sectional study. The study enrolled 18 sporadic MBS patients who visited the Eye Center of Beijing Tongren Hospital Affiliated to Capital Medical University from July 2018 to December 2021. All patients completed the general information questionnaire and underwent detailed ophthalmic examinations and general physical examinations. Seventeen patients received MRI examination of cranial nerves and the orbit. The peripheral venous blood of all patients and their nuclear family members was collected, the genomic DNA was extracted, and the pathogenic gene variations that may lead to MBS were identified by whole exome sequencing and bioinformatics analysis. Results: Among the 18 patients, there were 8 males and 10 females, and the age was (4.5±4.0) years (range, 8 months to 17 years). All patients showed congenital, bilateral or unilateral abduction deficit and facial weakness, which met the minimum diagnostic criteria of MBS. Among them, bilateral abduction deficit (16/18) and bilateral facial weakness (15/18) were more common. Nine patients were orthotopic in primary position, eight presented with esotropia, and one showed hypotropia. All patients had ametropia, of which 4 patients were diagnosed as amblyopia. Fifteen patients were also accompanied by other multiple congenital malformations, mainly characterized by abnormal development of glossopharynx (14/18) and limbs (5/18), and 7 patients were also accompanied by motor retardation. In addition, 9 patients had intrauterine exposure to adverse factors. Among the 17 patients who underwent MRI, 15 patients had bilateral hypoplasia of the abducens nerve, two had unilateral hypoplasia of the abducens nerve, 14 showed bilateral hypoplasia of the facial nerve, and three showed hypoplasia of the left facial nerve. Besides, some patients were also accompanied by hypoplasia of other cranial nerves, mainly the glossopharyngeal nerve and the hypoglossal nerve. No definite pathogenic variations were found by whole exome sequencing and bioinformatics analysis. Conclusions: The main clinical features of MBS were congenital abduction deficit and facial weakness, with complicated manifestations and variable severity. MRI showed absence or thinning of the abducens nerve and the facial nerve. The results of MRI can be used as a supplement to the diagnostic criteria of MBS. The mutation detection rate of MBS was low, and half of patients had exposure to adverse factors during pregnancy, suggesting that there was a multifactorial pathogenic mechanism in MBS.
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Affiliation(s)
- Q Ma
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - H Y Jia
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Q L Chang
- Medical Imaging Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y D Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Y Liang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - D Wang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - R R Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Y H Jiao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
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Chen XY, Qin JF, Tang LW, Zhang RR. [Construction and application of home self-sampling processes for cervical human papillomavirus detection]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1145-1148. [PMID: 34619935 DOI: 10.3760/cma.j.cn112150-20210126-00080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To construct and develop the home self-sampling processes of cervical human papillomavirus (HPV) detection and evaluate its application effect. An integrated HPV self-sampling detection platform is scheduled to include three terminals: a user terminal, a detection terminal and a medical terminal. It covers a wide range of functions of self-sampling kit acquisition of user, sample logistics tracking, inspection services, report query, medical consultation, health management, and follow-up tracking. A total of 8 053 users applied for self-sampling kits and all completed online user information registration from January to November 2020. The average age of users ranged from 17 to 84 with a median age of 42 years old. Registered users of the platform were distributed in Jiangsu, Jiangxi, Hebei, Shanxi, Shanghai, Ningxia, Anhui, Zhejiang, Inner Mongolia, Beijing and Xinjiang. 8 045 users completed self-sampling with a kit return rate of 99.9%. Six users lost the kits during the express delivery, and 2 users had the kits contaminated due to improper application; The amount of exfoliated cells collected from 8 045 cases in the sample kits were all within the endogenous internal standard of the nucleic acid kit, and the qualified rate of kits was 100%. The proportion of test report issued by the detection platform within 3 d accounts for 96.93% (7 799/8 054). Among the 763 positive users, 742 completed 6-month reexamination, with a reexamination rate of 97.25%. Unfortunately, 21 cases were lost to follow-up. Taken together, HPV home-based self-sampling is simple, convenient and efficient in use. It can expand the coverage of cervical cancer screening and may help promote HPV screening.
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Affiliation(s)
- X Y Chen
- Department of Obstetrics and Gynaecology, Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University,Hangzhou 310020, China
| | - J F Qin
- Nursing Department, Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou 310020, China
| | - L W Tang
- Nursing Department, Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou 310020, China
| | - R R Zhang
- Nursing Department, Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou 310020, China
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Zhang LY, Liu F, Chen X, Zhang XY, Ren YY, Zhang RR, Yang WY, Guo Y. [The hematological diversity of human parvovirus B19 infection after allo-hematopoietic stem cell transplantation in pediatric patients]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:654-659. [PMID: 34547871 PMCID: PMC8501274 DOI: 10.3760/cma.j.issn.0253-2727.2021.08.007] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 探讨异基因造血干细胞移植(allo-HSCT)患儿造血重建后人类细小病毒B19(HPV-B19)感染的血液学表现。 方法 对9例allo-HSCT后合并HPV-B19感染的患儿进行回顾性分析。 结果 9例患儿占同期接受allo-HSCT患儿的8.04%(9/112),男8例,女1例,中位年龄9(3~13)岁,均采取清髓性预处理方案。HPV-B19感染中位时间为移植后61(36~114)d。allo-HSCT并发HPV-B19感染患儿血液学表现具有异质性,9例患儿以血红蛋白伴网织红细胞下降为主要特点,7 d内网织红细胞比例、绝对值下降幅度中位数分别为90.4%(24.7%~98.7%)、90.7%(18.6%~99.0%)。除常见红系造血停滞表现外,allo-HSCT后合并HPV-B19感染的患儿还具有非红系的血象及骨髓变化:5例患儿外周血出现中性粒细胞下降,但骨髓涂片未见粒系增生受抑;6例患儿骨髓涂片查见巨核系增生减低,其中5例患儿外周血血小板下降。同时,allo-HSCT造血重建后合并HPV-B19感染的患儿骨髓红系受抑并非必要表现,9例患儿虽然均出现血红蛋白下降,但仅5例患儿骨髓红系增生减低。 结论 血液病患儿allo-HSCT造血重建后合并HPV-B19感染的血液学表现具有异质性,血红蛋白伴网织红细胞下降对HPV-B19感染早期诊断可能具有重要意义。
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Affiliation(s)
- L Y Zhang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - F Liu
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X Chen
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X Y Zhang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Y Y Ren
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - R R Zhang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - W Y Yang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Y Guo
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Children's Blood Disease Diagnosis and Treatment Center, Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
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Weng SR, Zhen WL, Yan X, Yue ZL, Hu HJ, Xu F, Zhang RR, Pi L, Zhu WK, Zhang CJ. Wide-spectrum photodetector constructed on a centimeter-scale flexible SnSe 2film using a new one-step strategy. J Phys Condens Matter 2021; 33:395001. [PMID: 34252886 DOI: 10.1088/1361-648x/ac1368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) materials attached with flexible substrates enable possibilities to apply their superior properties to the rapidly increasing demand for foldable displays and wearable biosensors in the internet-of-things technology. However, previous two-step strategy to construct the flexible devices, namely first obtaining 2D materials elsewhere and then transferring them onto flexible substrates, can cause huge problems, including irreversibly undermining the device performance and limiting the material size. Here we propose a new one-step strategy (other than the liquid phase processing and low temperature synthesis methods), namely directly depositing appropriate 2D materials onto flexible substrates, which involves no transferring and can maintain the crystal quality and properties to the greatest extent. More importantly, this strategy in principle has no limit in the film size, hence removing a main obstacle for the practical use of flexible films, such as complex logic operations and large-area optoelectronic applications. Using this strategy, a centimeter-scale SnSe2film is directly grown on polydimethylsiloxane, which is characterized as a uniform, out-of-plane oriented and semiconducting film that is robust to deformations. Based on the film, a flexible photodetector is fabricated and distinct photoresponse to a broad spectrum of light (405-830 nm) is observed, with remarkable technical parameters.
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Affiliation(s)
- S R Weng
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W L Zhen
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - X Yan
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - Z L Yue
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - H J Hu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - F Xu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - R R Zhang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - L Pi
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - W K Zhu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - C J Zhang
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, People's Republic of China
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Zhang RR, Chen XJ, Ren YY, Yang WY, Zhu XF. [Familial platelet disorder with predisposition to myeloid leukemia (FPD/AML): a case report and literature review]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:308-312. [PMID: 33979975 PMCID: PMC8120121 DOI: 10.3760/cma.j.issn.0253-2727.2021.04.007] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
目的 探讨RUNX1胚系突变导致的家族性血小板疾病并急性髓系白血病倾向(FPD/AML)患儿及其家族成员的临床特点及基因突变情况。 方法 对2019年10月中国医学科学院血液病医院儿童血液诊疗中心收治的1例FPD/AML患儿及部分家族成员的临床资料及基因突变结果进行分析。并以“RUNX1胚系突变”“家族性血小板疾病并急性髓系白血病倾向”“RUNX1 germline mutation”“FPD/AML”为检索词,检索建库至2020年9月中文数据库(中国知网数据库、万方数据库及维普数据库)及PubMed数据库进行文献复习。 结果 患儿为5岁男孩,因发现血小板减少3年入院。体格检查提示存在皮肤出血点,其他无明显异常。辅助检查:外周血常规示WBC 6.38×109/L,HGB 113 g/L,PLT 54×109/L,中性粒细胞绝对计数4.03×109/L,血小板平均体积(MPV)9.1 fl。骨髓涂片提示巨核系发育异常。涂片免疫CD42b及CD41酶标提示存在小巨核细胞。基因检测提示RUNX1(exon3: c.520delC:p.R174Efs*10, NM_001001890)的移码突变,经口腔上皮细胞验证为胚系突变。家族史中共有5名家族成员存在血液系统疾病并相继死亡。患儿母亲及外祖父先后进行了与血液肿瘤疾病相关的137个基因热点区域的基因检测,均检测到与患儿相同位点的RUNX1移码突变,但是三人的临床症状十分不同。文献检索共检索到相关英文文献37篇,报道了70多个FPD/AML家族,未检索到相关中文文献。 结论 RUNX1胚系突变是导致FPD/AML的病因,进展为髓系恶性肿瘤的风险极高,携带相同突变的家族成员可能表现出非常不同的临床症状和严重程度。
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Affiliation(s)
- R R Zhang
- Pediatric Blood Disease Center, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X J Chen
- Pediatric Blood Disease Center, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Y Y Ren
- Pediatric Blood Disease Center, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - W Y Yang
- Pediatric Blood Disease Center, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X F Zhu
- Pediatric Blood Disease Center, State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
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Liu F, Chen XJ, Guo Y, Yang WY, Chen X, Zhang XY, Zhang RR, Ren YY, Zhu XF. [Efficacy and prognostic factors of the chemotherapy regimen of CCLG-ALL-2008 on pediatric acute lymphoblastic leukemia with ETV6-RUNX1 rearrangement]. Zhonghua Xue Ye Xue Za Zhi 2020; 41:896-902. [PMID: 33333691 PMCID: PMC7767800 DOI: 10.3760/cma.j.issn.0253-2727.2020.11.003] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the predictive role of ETV6-RUNX1 fusion gene in protocol CCLG-ALL-2008 as well as identify the prognostic factors that influence the outcome of ALL with ETV6-RUNX1 fusion gene. Methods: One hundred and seventy-eight patients newly diagnosed with pediatric acute lymphoblastic leukemia with ETV6-RUNX1 rearrangement from April 2008 to April 2015 were enrolled in CCLG-ALL-2008. The follow up period ended in July 2018; we performed retrospective analyses of their data to determine the efficacy of the regimen and the prognostic factors. Results: The median age of the study population (178 pediatric patients) , including 100 boys and 78 girls was 4 (1-13) y, and the median white blood cell count at diagnosis was 9.46 (1.25-239.83) ×10(9)/L. Three patients died, and 1 was lost to follow up by the end of the first induction chemotherapy, resulting in an induced remission rate of 97.8% (174/178) . The cumulative incidence of relapse was 15.9% with a median follow up of 73.5 mon. Total 83.3% of the relapse cases were those of isolated bone marrow relapse, while 79.2% of the cases were those of late relapse. The median interval time between relapse and first complete remission was 35.5 mon (range, 1-62 months) . One of the 5 patients with early recurrence and 7 of the 19 with late recurrence cases survived. The 5-year-OS and 5-year-EFS of ETV6-RUNX1 positive children was (89.4±2.4) % and (82.1±6.9) %, respectively. The estimated 10-year-OS and 10-year-EFS of ETV6-RUNX1 positive children was (88.6±2.5) % and (77.3±4.0) %, respectively. The Kaplan-Meier method and Log-rank test were used to estimate and compare the survival. Univariate statistical analysis showed that poor prognostic factors that influenced survival included central nervous system state 2 at diagnosis, poor prednisone response, high risk, gene positivity after induction chemotherapy, as well as MRD positivity and gene positivity at the 12(th) week. In the multivariate analysis, only the central nervous system state 2 at diagnosis and MRD positivity at the 12(th) week were associated with the outcome. Conclusion: ETV6-RUNX1-positive ALL is a subgroup with a favorable prognosis as per the CCLG-ALL-2008 protocol. Patients with ETV6-RUNX1 should be given more intensive therapy, including hematopoietic stem cell transplantation when they are CNS2 at diagnosis or have high level of MRD at the 12(th) week after treatment.
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Affiliation(s)
- F Liu
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X J Chen
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Y Guo
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - W Y Yang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X Chen
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X Y Zhang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - R R Zhang
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Y Y Ren
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - X F Zhu
- State Key Laboratory of Experimental Hematology; National Clinical Research Center for Blood Diseases; Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
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Zhang RR, Matkovic E, Fournelle JH, Richard B, Rowley HA, Salamat S. Histological features of gadolinium deposition in the brain, a case report. Acta Neuropathol 2020; 140:241-244. [PMID: 32356201 PMCID: PMC8369451 DOI: 10.1007/s00401-020-02159-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/30/2020] [Accepted: 04/19/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Ray R Zhang
- Department of Radiology, University of Wisconsin-Madison, Madison, USA. .,Department of Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, USA.
| | - Eduard Matkovic
- National Center for Emerging and Zoonotic Infectious Diseases, Centers of Disease Control and Prevention
| | | | - Bruce Richard
- Department of Radiology, University of Wisconsin-Madison
| | | | - Shahriar Salamat
- Department of Anatomic Pathology, University of Wisconsin-Madison
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Chan KH, Sridhar S, Zhang RR, Chu H, Fung AYF, Chan G, Chan JFW, To KKW, Hung IFN, Cheng VCC, Yuen KY. Factors affecting stability and infectivity of SARS-CoV-2. J Hosp Infect 2020; 106:226-231. [PMID: 32652214 PMCID: PMC7343644 DOI: 10.1016/j.jhin.2020.07.009] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/06/2020] [Indexed: 02/09/2023]
Abstract
BACKGROUND In late 2019, a novel human coronavirus - severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) - emerged in Wuhan, China. This virus has caused a global pandemic involving more than 200 countries. SARS-CoV-2 is highly adapted to humans and readily transmits from person-to-person. AIM To investigate the infectivity of SARS-CoV-2 under various environmental and pH conditions. The efficacies of various laboratory virus inactivation methods and home disinfectants against SARS-CoV-2 were investigated. METHODS The residual virus in dried form or in solution was titrated on to Vero E6 cells on days 0, 1, 3, 5 and 7 after incubation at different temperatures. Viral viability was determined after treatment with various disinfectants and pH solutions at room temperature (20-25oC). FINDINGS SARS-CoV-2 was able to retain viability for 3-5 days in dried form or 7 days in solution at room temperature. SARS-CoV-2 could be detected under a wide range of pH conditions from pH 4 to pH 11 for several days, and for 1-2 days in stool at room temperature but lost 5 logs of infectivity. A variety of commonly used disinfectants and laboratory inactivation procedures were found to reduce viral viability effectively. CONCLUSION This study demonstrated the stability of SARS-CoV-2 on environmental surfaces, and raises the possibility of faecal-oral transmission. Commonly used fixatives, nucleic acid extraction methods and heat inactivation were found to reduce viral infectivity significantly, which could ensure hospital and laboratory safety during the SARS-CoV-2 pandemic.
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Affiliation(s)
- K-H Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China.
| | - S Sridhar
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - R R Zhang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - H Chu
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - A Y-F Fung
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - G Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - J F-W Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - K K-W To
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - I F-N Hung
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China
| | - V C-C Cheng
- Department of Microbiology, Queen Mary Hospital, Hospital Authority, Hong Kong Special Administrative Region, People's Republic of China
| | - K-Y Yuen
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; State Key Laboratory for Emerging Infectious Diseases, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China; Carol Yu Centre for Infection, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong, People's Republic of China.
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Zhang RR, Grudzinksi JJ, Mehta TI, Burnette RR, Hernandez R, Clark PA, Lubin JA, Pinchuk AN, Jeffrey J, Longino M, Kuo JS, Weichert JP. In Silico Docking of Alkylphosphocholine Analogs to Human Serum Albumin Predicts Partitioning and Pharmacokinetics. Mol Pharm 2019; 16:3350-3360. [PMID: 31082240 DOI: 10.1021/acs.molpharmaceut.8b01301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Alkylphosphocholine (APC) analogs are a novel class of broad-spectrum tumor-targeting agents that can be used for both diagnosis and treatment of cancer. The potential for clinical translation for APC analogs will strongly depend on their pharmacokinetic (PK) profiles. The aim of this work was to understand how the chemical structures of various APC analogs impact binding and PK. To achieve this aim, we performed in silico docking analysis, in vitro and in vivo partitioning experiments, and in vivo PK studies. Our results have identified 7 potential high-affinity binding sites of these compounds on human serum albumin (HSA) and suggest that the size of the functional group directly influences the albumin binding, partitioning, and PK. Namely, the bulkier the functional groups, the weaker the agent binds to albumin, the more the agent partitions onto lipoproteins, and the less time the agent spends in circulation. The results of these experiments provide novel molecular insights into the binding, partitioning, and PK of this class of compounds and similar molecules as well as suggest pharmacological strategies to alter their PK profiles. Importantly, our methodology may provide a way to design better drugs by better characterizing the PK profile for lead compound optimization.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Marc Longino
- Cellectar Biosciences Inc. , Madison , Wisconsin , United States
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Tang H, Lu ZH, Zhang RR, Xu RR, Fang K. [A liver biopsy specimen model to study the quality improvement and process optimization through failure mode and effects analysis]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:210-212. [PMID: 30929338 DOI: 10.3760/cma.j.issn.1007-3418.2019.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- H Tang
- Department of Pathology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi 214002, China
| | - Z H Lu
- Department of Hepatology, The Affiliated Wuxi No.5 People's Hospital of Nanjing Medical University, Wuxi 214016, China
| | - R R Zhang
- Department of Pathology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi 214002, China
| | - R R Xu
- Department of Pathology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi 214002, China
| | - K Fang
- Department of Pathology, Yixing People's Hospital, Yixing 214200, China
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Wang J, Ma YL, Zhang WY, Ma J, Li ZQ, Zhang RR, Wang L, Pan SF, Zhu ZB, Yang X, Li ZL, Lin LZ, Li YF. [Investigation of risk behaviors on AIDS between foreign female sex workers in Yunnan border, 2015]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:1293-1295. [PMID: 30522234 DOI: 10.3760/cma.j.issn.0253-9624.2018.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- J Wang
- STD/AIDS Prevention and Control Institute Yunnan Center for Disease Control and Prevention, Kunming 650022, China
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Affiliation(s)
| | - John S Kuo
- University of Wisconsin Madison, Wisconsin
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17
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Affiliation(s)
| | - Ray R Zhang
- Department of Neurosurgery University of Texas Austin, Texas
| | - John S Kuo
- Department of Neurosurgery University of Texas Austin, Texas
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Affiliation(s)
- Jonathan A Lubin
- Department of Neurosurgery University of Wisconsin Madison, Wisconsin
| | - Ray R Zhang
- Department of Neurosurgery University of Wisconsin Madison, Wisconsin
| | - John S Kuo
- Department of Neurosurgery University of Wisconsin Madison, Wisconsin
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Ehrlich NA, Zhang RR, Kuo JS. Anti-Programmed Cell Death Protein-1 Immunotherapy for Glioblastoma is Impaired by Systemic Chemotherapy but Enhanced in Combination With Locally Delivered Chemotherapy. Neurosurgery 2017; 81:N34-N36. [PMID: 29088467 DOI: 10.1093/neuros/nyx453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Ray R Zhang
- University of Wisconsin-Madison Madison, Wisconsin
| | - John S Kuo
- University of Wisconsin-Madison Madison, Wisconsin
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Zhang RR, Schroeder AB, Grudzinski JJ, Rosenthal EL, Warram JM, Pinchuk AN, Eliceiri KW, Kuo JS, Weichert JP. Beyond the margins: real-time detection of cancer using targeted fluorophores. Nat Rev Clin Oncol 2017; 14:347-364. [PMID: 28094261 PMCID: PMC5683405 DOI: 10.1038/nrclinonc.2016.212] [Citation(s) in RCA: 290] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Over the past two decades, synergistic innovations in imaging technology have resulted in a revolution in which a range of biomedical applications are now benefiting from fluorescence imaging. Specifically, advances in fluorophore chemistry and imaging hardware, and the identification of targetable biomarkers have now positioned intraoperative fluorescence as a highly specific real-time detection modality for surgeons in oncology. In particular, the deeper tissue penetration and limited autofluorescence of near-infrared (NIR) fluorescence imaging improves the translational potential of this modality over visible-light fluorescence imaging. Rapid developments in fluorophores with improved characteristics, detection instrumentation, and targeting strategies led to the clinical testing in the early 2010s of the first targeted NIR fluorophores for intraoperative cancer detection. The foundations for the advances that underline this technology continue to be nurtured by the multidisciplinary collaboration of chemists, biologists, engineers, and clinicians. In this Review, we highlight the latest developments in NIR fluorophores, cancer-targeting strategies, and detection instrumentation for intraoperative cancer detection, and consider the unique challenges associated with their effective application in clinical settings.
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Affiliation(s)
- Ray R Zhang
- Department of Radiology, University of Wisconsin-Madison (UW-Madison), 600 Highland Avenue, Madison, Wisconsin 53792, USA
- Department of Neurological Surgery, UW-Madison, 600 Highland Avenue, Madison, Wisconsin 53792, USA
| | - Alexandra B Schroeder
- Medical Engineering, Morgridge Institute for Research, 330 North Orchard Street, Madison, Wisconsin 53715, USA
- Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison Wisconsin 53706, USA
- Department of Medical Physics, UW-Madison, 1111 Highland Avenue, Madison, Wisconsin 53705, USA
| | - Joseph J Grudzinski
- Department of Medical Physics, UW-Madison, 1111 Highland Avenue, Madison, Wisconsin 53705, USA
| | - Eben L Rosenthal
- Department of Otolaryngology, Stanford Cancer Center, 875 Blake Wilbur Drive, Stanford, California 94305, USA
| | - Jason M Warram
- Department of Otolaryngology, University of Alabama at Birmingham, 1670 University Boulevard, Birmingham, Alabama 35294, USA
| | - Anatoly N Pinchuk
- Department of Radiology, University of Wisconsin-Madison (UW-Madison), 600 Highland Avenue, Madison, Wisconsin 53792, USA
| | - Kevin W Eliceiri
- Medical Engineering, Morgridge Institute for Research, 330 North Orchard Street, Madison, Wisconsin 53715, USA
- Laboratory for Optical and Computational Instrumentation, 1675 Observatory Drive, Madison Wisconsin 53706, USA
- Department of Medical Physics, UW-Madison, 1111 Highland Avenue, Madison, Wisconsin 53705, USA
- Carbone Cancer Center, UW-Madison, 600 Highland Avenue Madison, Wisconsin 53792, USA
| | - John S Kuo
- Department of Neurological Surgery, UW-Madison, 600 Highland Avenue, Madison, Wisconsin 53792, USA
- Carbone Cancer Center, UW-Madison, 600 Highland Avenue Madison, Wisconsin 53792, USA
| | - Jamey P Weichert
- Department of Radiology, University of Wisconsin-Madison (UW-Madison), 600 Highland Avenue, Madison, Wisconsin 53792, USA
- Department of Medical Physics, UW-Madison, 1111 Highland Avenue, Madison, Wisconsin 53705, USA
- Carbone Cancer Center, UW-Madison, 600 Highland Avenue Madison, Wisconsin 53792, USA
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Yang C, Qu BY, Pan SS, Zhang L, Zhang RR, Tong P, Xiao RC, Lin JC, Guo XG, Zhang K, Tong HY, Lu WJ, Wu Y, Lin S, Song WH, Sun YP. Large Positive Thermal Expansion and Small Band Gap in Double-ReO 3-Type Compound NaSbF 6. Inorg Chem 2017; 56:4990-4995. [PMID: 28406625 DOI: 10.1021/acs.inorgchem.7b00002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Double-ReO3-type structure compound NaSbF6 undergoes a low-temperature rhombohedral to high-temperature cubic phase between 303 and 323 K, as revealed by temperature-dependent X-ray diffractions. Although many double-ReO3-type fluorides exhibit either low thermal expansion or negative thermal expansion (NTE), NaSbF6 exhibits positive thermal expansion (PTE) with a large volumetric coefficient of thermal expansion, αv = 62 ppm/K, in its cubic phase. Raman spectroscopy reveals that the low-frequency transverse vibration of fluorine atoms is stiffened in NaSbF6, compared with the typical NTE compound CaZrF6 with the same structure. The related weak contraction associated with the polyhedral rocking would be overcome by the notable elongation of the Na-F bond length on heating, thus leading to the large volumetric PTE. Unlike ScF3 and CaZrF6 which are insulators with a wide band gap, a relative small band gap of 3.76 eV was observed in NaSbF6. The small band gap can be attributed to the hybridization between the Sb 5s and F 2p orbitals.
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Affiliation(s)
- C Yang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,University of Science and Technology of China , Hefei 230026, People's Republic of China
| | - B Y Qu
- Laboratory of Amorphous Materials, School of Materials Science and Engineering, Hefei University of Technology , Hefei 230009, People's Republic of China
| | - S S Pan
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - L Zhang
- High Magnetic Field Laboratory, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - R R Zhang
- High Magnetic Field Laboratory, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - P Tong
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - R C Xiao
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,University of Science and Technology of China , Hefei 230026, People's Republic of China
| | - J C Lin
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - X G Guo
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,University of Science and Technology of China , Hefei 230026, People's Republic of China
| | - K Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,University of Science and Technology of China , Hefei 230026, People's Republic of China
| | - H Y Tong
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,University of Science and Technology of China , Hefei 230026, People's Republic of China
| | - W J Lu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - Y Wu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - S Lin
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - W H Song
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China
| | - Y P Sun
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,High Magnetic Field Laboratory, Chinese Academy of Sciences , Hefei 230031, People's Republic of China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
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Zhu S, An WB, Wan Y, Ren YY, Zhang RR, Zhang JL, Liu C, Sun CC, Chang LX, Chen XJ, Yang WY, Guo Y, Chen YM, Zou Y, Zhu XF. [Analysis of clinical characteristics and prognosis of non-severe aplastic anemia children with chromosomal abnormalities]. Zhonghua Er Ke Za Zhi 2016; 54:814-818. [PMID: 27806787 DOI: 10.3760/cma.j.issn.0578-1310.2016.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical characteristics and prognosis of non-severe aplastic anemia (NSAA) with chromosomal abnormalities in children. Method: A retrospective analysis of 304 cases with NSAA with successful karyotyping from 2001 to 2014 in the Institute of Hematology & Blood Disease Hospital was carried out. The treatment response, condition of blood transfusion were analyzed using χ2 test, the cumulative survival was estimated by the Kaplan-Meier method. Result: Out of 304 patients, 28 patients had chromosomal abnormalities with trisomy 8 (7 cases, 25.0%), abnormalities in chromosome 7 (5 cases, 17.9%), and other types (16 cases, 57.1%). There were no significant differences in the treatment response(40.9% (9/22)vs. 58.6%(119/203), χ2=2.539, P=0.111), the rate of getting rid of blood transfusion(54.5%(6/11) vs. 65.0%(39/60), χ2=6.455, P=0.086), five-year progression-free survival (49.2% vs.70.8%, χ2=0.849, P=0.357), and five-year cumulative survival (79.1% vs. 92.8%, χ2=0.330, P=0.556) between the patients with or without chromosomal abnormalities. There were significant differences in the rate of disease progression(41.7%(10/24) vs. 22.3%(48/215), χ2=4.394, P=0.045), the incidence of myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML) (20.8%(5/24)vs. 0.9%(2/215), χ2=30.082, P=0.000)and the five-year cumulative incidence of MDS or AML(33.4% vs. 0.8%, χ2=17.798, P=0.000)between children with and without chromosomal abnormalities. Conclusion: The incidence of chromosomal abnormalities in children with NSAA is 9.2%. The clinical features and treatment response are similar, but children with chromosomal abnormalities have a poorer prognosis, and have higher risk of progressing to MDS or AML.
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Affiliation(s)
- S Zhu
- Pediatric Blood Disease Center, Institute of Hematology & Blood Disease Hospital, Tianjin 300020, China
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Zhang RR, Swanson KI, Hall LT, Weichert JP, Kuo JS. Diapeutic cancer-targeting alkylphosphocholine analogs may advance management of brain malignancies. CNS Oncol 2016; 5:223-31. [PMID: 27616199 DOI: 10.2217/cns-2016-0017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The following is a special report on alkylphosphocholine analogs as targeted imaging and therapy agents for cancer, and their potential role in diagnosis and treatment in glioblastoma and brain metastases. These novel cancer-targeting agents display impressive tumor avidity with low background in the normal brain, and multimodal diagnostic imaging and therapy capabilities. The use of these agents may significantly improve diagnosis, treatment and post-treatment follow-up in patients with brain malignancies.
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Affiliation(s)
- Ray R Zhang
- Department of Neurological Surgery, University of Wisconsin, Madison, WI 53792, USA.,Department of Radiology, University of Wisconsin, Madison, WI 53705, USA
| | - Kyle I Swanson
- Department of Neurological Surgery, University of Wisconsin, Madison, WI 53792, USA
| | - Lance T Hall
- Department of Radiology, University of Wisconsin, Madison, WI 53705, USA
| | - Jamey P Weichert
- Department of Radiology, University of Wisconsin, Madison, WI 53705, USA.,Carbone Cancer Center, University of Wisconsin, Madison, WI 53792, USA
| | - John S Kuo
- Department of Neurological Surgery, University of Wisconsin, Madison, WI 53792, USA.,Carbone Cancer Center, University of Wisconsin, Madison, WI 53792, USA
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Clark PA, Al-Ahmad AJ, Qian T, Zhang RR, Wilson HK, Weichert JP, Palecek SP, Kuo JS, Shusta EV. Analysis of Cancer-Targeting Alkylphosphocholine Analogue Permeability Characteristics Using a Human Induced Pluripotent Stem Cell Blood-Brain Barrier Model. Mol Pharm 2016; 13:3341-9. [PMID: 27421304 DOI: 10.1021/acs.molpharmaceut.6b00441] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cancer-targeting alkylphosphocholine (APC) analogues are being clinically developed for diagnostic imaging, intraoperative visualization, and therapeutic applications. These APC analogues derived from chemically synthesized phospholipid ethers were identified and optimized for cancer-targeting specificity using extensive structure-activity studies. While they strongly label human brain cancers associated with disrupted blood-brain barriers (BBB), APC permeability across intact BBB remains unknown. Three of our APC analogues, CLR1404 (PET radiotracer), CLR1501 (green fluorescence), and CLR1502 (near-infrared fluorescence), were tested for permeability across a BBB model composed of human induced pluripotent stem cell-derived brain microvascular endothelial cells (iPSC-derived BMECs). This in vitro BBB system has reproducibly consistent high barrier integrity marked by high transendothelial electrical resistance (TEER > 1500 Ω-cm(2)) and functional expression of drug efflux transporters. The radioiodinated and fluorescent APC analogues demonstrated fairly low permeability across the iPSC-BMEC (35 ± 5.7 (CLR1404), 54 ± 3.2 (CLR1501), and 26 ± 4.9 (CLR1502) × 10(-5) cm/min) compared with BBB-impermeable sucrose (13 ± 2.5) and BBB-permeable diazepam (170 ± 29). Only the fluorescent APC analogues (CLR1501, CLR1502) underwent BCRP and MRP polarized drug efflux transport in the brain-to-blood direction of the BBB model, and this efflux can be specifically blocked with pharmacological inhibition. None of the tested APC analogues appeared to undergo substantial P-gp transport. Limited permeability of the APC analogues across an intact BBB into normal brain likely contributes to the high tumor to background ratios observed in initial human trials. Moreover, addition of fluorescent moieties to APCs resulted in greater BMEC efflux via MRP and BCRP, and may affect fluorescence-guided applications. Overall, the characterization of APC analogue permeability across human BBB is significant for advancing future brain tumor-targeted applications of these agents.
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Affiliation(s)
| | - Abraham J Al-Ahmad
- Department of Pharmaceutical Sciences, Texas Tech University Health Sciences Center-School of Pharmacy , Amarillo, Texas 79106, United States
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Kuo JS, Zhang RR, Pinchuk AN, Jeffrey J, Clark PA, Weichert JP. 364 Creation of a Dual-Labeled Cancer-Targeting Alkylphosphocholine Analog for Dual Modality Quantitative Positron Emission Tomography and Intraoperative Tumor Visualization. Neurosurgery 2016. [DOI: 10.1227/01.neu.0000489852.78064.fb] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Qi XM, Zhang RR, Wan JY. [Large cell neuroendocrine carcinoma with urothelial carcinoma of kidney: report of a case]. Zhonghua Bing Li Xue Za Zhi 2016; 45:480-1. [PMID: 27430697 DOI: 10.3760/cma.j.issn.0529-5807.2016.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang RR, Pointer KB, Kuo JS. Excitotoxic SLC7A11 Expression Is a Marker of Poor Glioblastoma Survival and a Potential Therapeutic Target. Neurosurgery 2016; 77:N16-7. [PMID: 26584321 DOI: 10.1227/01.neu.0000473809.76102.ee] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Tang H, Zhang RR. [Application of PDCA circulation in sustainable quality improvement of paraffin-embedded sections]. Zhonghua Bing Li Xue Za Zhi 2016; 45:264-265. [PMID: 27033393 DOI: 10.3760/cma.j.issn.0529-5807.2016.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Wan Y, An WB, Zhang JY, Zhang JL, Zhang RR, Zhu S, Chang LX, Zhang YC, Liu F, Yang WY, Chen XJ, Zou Y, Chen YM, Zhu XF. [Clinical and genetic features of dyskeratosis congenital with bone marrow failure in eight patients]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:216-20. [PMID: 27033759 PMCID: PMC7342957 DOI: 10.3760/cma.j.issn.0253-2727.2016.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
目的 加深对先天性角化不良(dyskeratosis congenital,DC)伴骨髓衰竭的认识。 方法 收集2010年9月30日至2015年9月30日8例伴骨髓衰竭DC患儿的临床资料,利用二代测序技术对DKC1、TERC、TERT、NOP10、NHP2、TINF2等16种端粒相关基因进行全外显子及剪接位点测序分析。 结果 8例DC患儿中男6例、女2例,中位发病月龄为42(15~60)个月。初诊血常规:中位WBC 3.99(1.26~5.44)×109/L,中位中性粒细胞计数1.11(0.38~2.15)×109/L,中位RBC 2.45(0.37~3.56)×1012/L,中位HGB 82.5(15~127) g/L,中位PLT 27(2~112)×109/L。8例患儿中6例骨髓增生减低或重度减低。3例患儿检出DKC1基因突变:c.961C>A 1例,c.1058C>T 2例;4例患儿检出TINF2基因突变:c.849delC、c.844C>T、c.811C>T、c.862T>A合并c.871delA各1例;1例患儿检出TINF2基因突变(c.848C>A)合并TERT基因突变(c.1138C>T)。其中DKC c.961C>A、TINF2 c.849delC、TINF2 c.871delA突变为首次报道。7例患儿口服雄激素治疗,其中5例血常规指标改善。1例患儿死于重症感染,其余7例患儿维持治疗。 结论 DC伴骨髓衰竭以TINF2突变和DKC1突变为主。雄激素治疗对部分病例有效。
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Affiliation(s)
- Y Wan
- Center of Pediatric Blood Diseases, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin 300020, China
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Pointer KB, Zhang RR, Kuo JS. Oncolytic Herpes Simplex Virus Glioblastoma Therapy is Potentiated by Tumor Necrosis Factor-α Inhibition. Neurosurgery 2015; 77:N18-20. [DOI: 10.1227/01.neu.0000467297.56504.5b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Swanson KI, Clark PA, Zhang RR, Kandela IK, Farhoud M, Weichert JP, Kuo JS. Fluorescent cancer-selective alkylphosphocholine analogs for intraoperative glioma detection. Neurosurgery 2015; 76:115-23; discussion 123-4. [PMID: 25549194 DOI: 10.1227/neu.0000000000000622] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND 5-Aminolevulinic acid (5-ALA)-induced tumor fluorescence aids brain tumor resections but is not approved for routine use in the United States. We developed and describe testing of 2 novel fluorescent, cancer-selective alkylphosphocholine analogs, CLR1501 (green) and CLR1502 (near infrared), in a proof-of-principle study for fluorescence-guided glioma surgery. OBJECTIVE To demonstrate that CLR1501 and CLR1502 are cancer cell-selective fluorescence agents in glioblastoma models and to compare tumor-to-normal brain (T:N) fluorescence ratios with 5-ALA. METHODS CLR1501, CLR1502, and 5-ALA were administered to mice with magnetic resonance imaging-verified orthotopic U251 glioblastoma multiforme- and glioblastoma stem cell-derived xenografts. Harvested brains were imaged with confocal microscopy (CLR1501), the IVIS Spectrum imaging system (CLR1501, CLR1502, and 5-ALA), or the Fluobeam near-infrared fluorescence imaging system (CLR1502). Imaging and quantitative analysis of T:N fluorescence ratios were performed. RESULTS Excitation/emission peaks are 500/517 nm for CLR1501 and 760/778 nm for CLR1502. The observed T:N ratio for CLR1502 (9.28±1.08) was significantly higher (P<.01) than for CLR1501 (3.51±0.44 on confocal imaging; 7.23±1.63 on IVIS imaging) and 5-ALA (4.81±0.92). Near-infrared Fluobeam CLR1502 imaging in a mouse xenograft model demonstrated high- contrast tumor visualization compatible with surgical applications. CONCLUSION CLR1501 (green) and CLR1502 (near infrared) are novel tumor-selective fluorescent agents for discriminating tumor from normal brain. CLR1501 exhibits a tumor-to-brain fluorescence ratio similar to that of 5-ALA, whereas CLR1502 has a superior tumor-to-brain fluorescence ratio. This study demonstrates the potential use of CLR1501 and CLR1502 in fluorescence-guided tumor surgery.
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Affiliation(s)
- Kyle I Swanson
- *Department of Neurological Surgery, ‡Cellular and Molecular Biology Training Program, ¶Department of Radiology, ‖Department Medical Physics, and #Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; §Cellectar Biosciences, Inc, Madison, Wisconsin; **Department of Surgery, National University of Singapore, Singapore
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Javedan K, Feygelman V, Zhang RR, Moros EG, Correa CR, Trotti A, Li W, Zhang GG. Monte Carlo comparison of superficial dose between flattening filter free and flattened beams. Phys Med 2014; 30:503-8. [PMID: 24662096 DOI: 10.1016/j.ejmp.2014.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 01/27/2014] [Accepted: 03/03/2014] [Indexed: 10/25/2022] Open
Abstract
This study investigates the superficial dose from FFF beams in comparison with the conventional flattened ones using a Monte Carlo (MC) method. Published phase-space files which incorporated real geometry of a TrueBeam accelerator were used for the dose calculation in phantom and clinical cases. The photon fluence on the central axis is 3 times that of a flattened beam for a 6 MV FFF beam and 5 times for a 10 MV beam. The mean energy across the field in air at the phantom surface is 0.92-0.95 MeV for the 6 MV FFF beam and 1.18-1.30 MeV for the corresponding flattened beam. At 10 MV, the values are 1.52-1.72 and 2.15-2.87 MeV for the FFF and flattened beams, respectively. The phantom dose at the depth of 1 mm in the 6 MV FFF beam is 6% ± 2.5% (of the maximum dose) higher compared to the flattened beam for a 25 × 25 cm(2) field and 14.6% ± 1.9% for the 2 × 2 cm(2) field. For the 10 MV beam, the corresponding differences are 3.4% ± 1.5% and 10.7% ± 0.6%. The skin dose difference at selected points on the patient's surface between the plans using FFF and flattened beams in the head-and-neck case was 6.5% ± 2.3% (1SD), and for the breast case it was 6.4% ± 2.3%. The Monte Carlo simulations showed that due to the lower mean energy in the FFF beam, the clinical superficial dose is higher without the flattening filter compared to the flattened beam.
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Affiliation(s)
- Khosrow Javedan
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
| | | | - Ray R Zhang
- School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Eduardo G Moros
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
| | - Candace R Correa
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
| | - Andy Trotti
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
| | - Weiqi Li
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA
| | - Geoffrey G Zhang
- Radiation Oncology Department, Moffitt Cancer Center, Tampa, FL, USA.
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Zhang RR, Feygelman V, Harris ER, Rao N, Moros EG, Zhang GG. Is wax equivalent to tissue in electron conformal therapy planning? A Monte Carlo study of material approximation introduced dose difference. J Appl Clin Med Phys 2013; 14:3991. [PMID: 23318384 PMCID: PMC5713917 DOI: 10.1120/jacmp.v14i1.3991] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 07/13/2012] [Accepted: 09/27/2012] [Indexed: 11/23/2022] Open
Abstract
With CT-based Monte Carlo (MC) dose calculations, material composition is often assigned based on the standard Hounsfield unit ranges. This is known as the density threshold method. In bolus electron conformal therapy (BolusECT), the bolus material, machineable wax, would be assigned as soft tissue and the electron density is assumed equivalent to soft tissue based on its Hounsfield unit. This study investigates the dose errors introduced by this material assignment. BEAMnrc was used to simulate electron beams from a Trilogy accelerator. SPRRZnrc was used to calculate stopping power ratios (SPR) of tissue to wax, SPR (tissue) (wax), and tissue to water, SPR(tissue) (water), for 6, 9, 12, 15, and 18 MeV electron beams, of which 12 and 15MeV beams are the most commonly used energies in BolusECT. DOSXYZnrc was applied in dose distribution calculations in a tissue phantom with either flat wax slabs of various thicknesses or a wedge-shaped bolus on top. Dose distribution for two clinical cases, a chest wall and a head and neck, were compared with the bolus material treated as wax or tissue. The SPR(tissue) (wax) values for 12 and 15MeV beams are between 0.935 and 0.945, while the SPR(tissue) (water) values are between 0.990 and 0.991. For a 12 MeV beam, the dose in tissue immediately under the bolus is overestimated by 2.5% for a 3 cm bolus thickness if the wax bolus is treated as tissue. For 15 MeV beams, the error is 1.4%. However, in both clinical cases the differences in the PTV DVH is negligible. Due to stopping power differences, dose differences of up to 2.5% are observed in MC simulations if the bolus material is misassigned as tissue in BolusECT dose calculations. However, for boluses thinner than 2 cm that are more likely encountered in practice, the error is within clinical tolerance.
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Affiliation(s)
- Ray R Zhang
- School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
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Gao Y, Zhang RR, Li JH, Ren M, Ren ZX, Shi JH, Pan QZ, Ren SP. Radix Astragali lowers kidney oxidative stress in diabetic rats treated with insulin. Endocrine 2012; 42:592-8. [PMID: 22527888 DOI: 10.1007/s12020-012-9670-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 01/18/2012] [Accepted: 04/04/2012] [Indexed: 01/04/2023]
Abstract
Fluctuations in glucose levels in diabetic patients can result in oxidative stress, resulting in an increased risk for diabetic complications. We investigated whether antioxidation would protect the kidney from oxidative stress in diabetic rats treated with insulin and provide evidence for the efficacy of antioxidant treatment in diabetes management. Diabetes was induced by injection of Streptozotocin intraperitoneally in male Wistar rats. Diabetic rats received either insulin, both insulin and Radix Astragali (RA), RA, or no treatment. The levels of malondialdehyde (MDA), interleukin 6 (IL-6), tumor necrosis factor α (TNF-α) and activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) in kidney were determined. The changes of blood glucose levels and body weight were monitored. The levels of serum creatinine (Scr) were determined. The expression of PKCα was determined by western blot. NF-κB activation in kidney was assessed using EMSA. Compared to diabetic rats treated with insulin alone, the diabetic rats treated with combination of insulin and RA showed: (1) significantly lower levels of MDA, IL-6, TNF-α, and Scr (p < 0.05); (2) significantly higher SOD and GSH-Px activities (p < 0.05); (3) significantly lower NF-κB activation and lower expression levels of PKCα (p < 0.05); (4) significantly smaller kidney-to-body weight ratio (p < 0.05). RA is an effective agent in lowering oxidative stress in diabetic rats treated with insulin. Antioxidation is beneficial in reducing the risk of kidney damage due to oxidative stress in diabetic patients.
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Affiliation(s)
- Y Gao
- Department of Endocrinology, First Hospital of Jilin University, Changchun, 130021, Jilin Province, China
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Wang XF, Luo XG, Ying JJ, Xiang ZJ, Zhang SL, Zhang RR, Zhang YH, Yan YJ, Wang AF, Cheng P, Ye GJ, Chen XH. Enhanced superconductivity by rare-earth metal doping in phenanthrene. J Phys Condens Matter 2012; 24:345701. [PMID: 22872048 DOI: 10.1088/0953-8984/24/34/345701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We successfully synthesized La- and Sm-doped phenanthrene powder samples and observed superconductivity in them at T(c) around 6 K. The T(c)s are 6.1 K for La(1) phenanthrene and 6.0 K for Sm(1) phenanthrene, which are enhanced by about 1 and 0.5 K compared to those in A(3) phenanthrene (A = K and Rb) and in Ae(1.5) phenanthrene (Ae = Sr and Ba) superconductors, respectively. The superconductive shielding fractions for La(1) phenanthrene and Sm(1) phenanthrene are 46.1% and 49.8% at 2 K, respectively. The small effect of doping with the magnetic ion Sm(3+) on T(c) and the positive pressure dependence coefficient of T(c) strongly suggest unconventional superconductivity in the doped phenanthrene superconductors. The charge transfer to organic molecules from dopants of La and Sm induces a redshift of 7 cm(-1) per electron for the mode at 1441 cm(-1) in the Raman spectra, which is almost the same as those observed in A(3) phenanthrene (A = K and Rb) and Ae(1.5) phenanthrene (Ae = Sr and Ba) superconductors.
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Affiliation(s)
- X F Wang
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Zhou T, He X, Cheng R, Zhang B, Zhang RR, Chen Y, Takahashi Y, Murray AR, Lee K, Gao G, Ma JX. Implication of dysregulation of the canonical wingless-type MMTV integration site (WNT) pathway in diabetic nephropathy. Diabetologia 2012; 55:255-66. [PMID: 22016045 DOI: 10.1007/s00125-011-2314-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Accepted: 08/02/2011] [Indexed: 12/31/2022]
Abstract
AIMS/HYPOTHESIS The wingless-type MMTV integration site (WNT) pathway mediates multiple physiological and pathological processes, such as inflammation, angiogenesis and fibrosis. The aim of this study was to investigate whether canonical WNT signalling plays a role in the pathogenesis of diabetic nephropathy. METHODS Expression of WNT ligands and frizzled receptors in the canonical WNT pathway in the kidney was compared at the mRNA level using real-time RT-PCR between Akita mice, streptozotocin-induced diabetic rats and db/db mice and their respective non-diabetic controls. Renal function was evaluated by measuring the urine albumin excretion. Human renal proximal tubular epithelial cells were treated with high-glucose medium and 4-hydroxynonenal (HNE). Levels of β-catenin, connective tissue growth factor and fibronectin were determined by western blot analysis. RESULTS Some of the WNT ligands and frizzled receptors showed increased mRNA levels in the kidneys of Akita mice, streptozotocin-induced diabetic rats and db/db mice compared with their non-diabetic controls. Renal levels of β-catenin and WNT proteins were upregulated in these diabetic models. Lowering the blood glucose levels by insulin attenuated the activation of WNT signalling in the kidneys of Akita mice. In cultured human renal proximal tubular epithelial cells, both high glucose and HNE activated WNT signalling. Inhibition of WNT signalling with a monoclonal antibody blocking LDL-receptor-related protein 6 ameliorated renal inflammation and fibrosis and reduced proteinuria in Akita mice. CONCLUSIONS/INTERPRETATION The WNT pathway is activated in the kidneys of models of both type 1 and 2 diabetes. Dysregulation of the WNT pathway in diabetes represents a new pathogenic mechanism of diabetic nephropathy and renders a new therapeutic target.
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Affiliation(s)
- T Zhou
- Department of Biochemistry, Zhongshan Medical School, Sun Yat-sen University, Guangzhou, People's Republic of China
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Zhang GG, Ku L, Dilling TJ, Stevens CW, Zhang RR, Li W, Feygelman V. Volumetric modulated arc planning for lung stereotactic body radiotherapy using conventional and unflattened photon beams: a dosimetric comparison with 3D technique. Radiat Oncol 2011; 6:152. [PMID: 22070866 PMCID: PMC3354344 DOI: 10.1186/1748-717x-6-152] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 11/09/2011] [Indexed: 01/10/2023] Open
Abstract
Purpose Frequently, three-dimensional (3D) conformal beams are used in lung cancer stereotactic body radiotherapy (SBRT). Recently, volumetric modulated arc therapy (VMAT) was introduced as a new treatment modality. VMAT techniques shorten delivery time, reducing the possibility of intrafraction target motion. However dose distributions can be quite different from standard 3D therapy. This study quantifies those differences, with focus on VMAT plans using unflattened photon beams. Methods A total of 15 lung cancer patients previously treated with 3D or VMAT SBRT were randomly selected. For each patient, non-coplanar 3D, coplanar and non-coplanar VMAT and flattening filter free VMAT (FFF-VMAT) plans were generated to meet the same objectives with 50 Gy covering 95% of the PTV. Two dynamic arcs were used in each VMAT plan. The couch was set at ± 5° to the 0° straight position for the two non-coplanar arcs. Pinnacle version 9.0 (Philips Radiation Oncology, Fitchburg WI) treatment planning system with VMAT capabilities was used. We analyzed the conformity index (CI), which is the ratio of the total volume receiving at least the prescription dose to the target volume receiving at least the prescription dose; the conformity number (CN) which is the ratio of the target coverage to CI; and the gradient index (GI) which is the ratio of the volume of 50% of the prescription isodose to the volume of the prescription isodose; as well as the V20, V5, and mean lung dose (MLD). Paired non-parametric analysis of variance tests with post-tests were performed to examine the statistical significance of the differences of the dosimetric indices. Results Dosimetric indices CI, CN and MLD all show statistically significant improvement for all studied VMAT techniques compared with 3D plans (p < 0.05). V5 and V20 show statistically significant improvement for the FFF-VMAT plans compared with 3D (p < 0.001). GI is improved for the FFF-VMAT and the non-coplanar VMAT plans (p < 0.01 and p < 0.05 respectively) while the coplanar VMAT plans do not show significant difference compared to 3D plans. Dose to the target is typically more homogeneous in FFF-VMAT plans. FFF-VMAT plans require more monitor units than 3D or non-coplanar VMAT ones. Conclusion Besides the advantage of faster delivery times, VMAT plans demonstrated better conformity to target, sharper dose fall-off in normal tissues and lower dose to normal lung than the 3D plans for lung SBRT. More monitor units are often required for FFF-VMAT plans.
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Zhang GG, Ku L, Michael Yu HH, Sarangkasiri S, Zhang RR, Li W, Feygelman V. Dosimetric analysis of modulated and hybrid arcs in stereotactic radiosurgery. J Radiosurg SBRT 2011; 1:177-182. [PMID: 29296315 PMCID: PMC5725314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 09/27/2011] [Indexed: 06/07/2023]
Abstract
PURPOSE Forward-planned conformal arcs (termed dynamic arcs in the BrainLab iPlan system) have been routinely used in cranial stereotactic radiosurgery (SRS) for many yeras. This study compares dosimetric parameters of the newer, inversely-planned volumetric modulated arc therapy (VMAT) and VMAT-conformal hybrid plans with conformal arc plans. In the hybrid plans, various numbers of conformal arcs in a conformal plan are replaced with VMAT arcs. METHODS Ten brain cancer cases previously treated on a Novalis accelerator for frameless cranial stereotactic radiosurgery using conformal arcs generated by BrainLab iPlan treatment planning system were retrospectively studied with various numbers of VMAT arcs replacing the conformal arcs. Pure VMAT plans of different numbers of arcs were also generated using the same angle and arc length setup for all or part of the conformal arcs and compared with both the original and hybrid plans. Pinnacle version 9.0 was used for treatment plan generation. SmartArc was used for the VMAT planning for a Novalis accelerator. The conformity index (CI), defined as the ratio of the isodose volume to the isodose covered target volume, gradient index (GI), defined as the ratio of the 50% isodose volume (V50) to the 100% isodose volume, volume covered by 12 Gy isodose (V12), mean dose and standard deviation of dose in target were studied. RESULTS With one of the conformal arcs replaced with a VMAT arc of the same weighting and geometric setup, the average CI with one standard deviation was improved from 1.35 ± 0.18 to 1.29 ± 0.15 (p-value 0.03), while the average GI degraded from 3.8 ± 1.0 to 4.9 ± 1.5 (p-value < 0.01). The degraded GI in the VMAT plans is due to the absence of beam margin limit in SmartArc planning. Pure VMAT plans usually demonstrated better CI values than the hybrid and conformal arc plans when the number of arcs was greater than 2. The GI value was improved with increasing number of arcs in VMAT plans. For target volumes greater than 1 cc, VMAT plans demonstrated improved CI and smaller V50 and V12 than that in conformal arc plans. Better dose fall-off in normal tissue in VMAT plans is accompanied with higher dose heterogeneity in the target volume. CONCLUSION VMAT and conformal-VMAT hybrid plans usually offer better target conformity. The dose fall-off in normal tissue is also better in VMAT plans when the number of arcs is greater than 3 and target volume is greater than 1 cc, but compromise the dose homogeneity in target volumes. VMAT plans are the best option for targets that are greater than 1 cc for cranial radiosurgery treatments, while for very small targets, conformal arc technique may still be the better choice based on data of dose fall-off in normal tissues.
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Affiliation(s)
| | - Lichung Ku
- Radiation Oncology, Salem Hospital, Salem, Oregon, USA
| | | | | | - Ray R Zhang
- School of Medicine and Public Health, University of Wisconsin, Madison, USA
| | - Weiqi Li
- Radiation Oncology, Moffitt Cancer Center, Tampa, Florida, USA
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Qi M, Lei T, Zhou L, Chen XD, Long H, Long QQ, Zhang RR, Yang ZQ, Gan L. Cloning, characterization, chromosomal mapping and tissue transcription analysis of porcine CREB2 and CREB3 genes. Folia Biol (Praha) 2009; 55:137-144. [PMID: 19691921] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
CREB2 and CREB3 are two important members of the ATF/CREB family, which negatively and positively regulates CRE-dependent transcription in vitro. Here we report the cloning, chromosome mapping and tissue transcription analysis of CREB2 and CREB3 in pigs. The full-length coding sequence of CREB2 and CREB3 is 1047 bp and 1098 bp, encoding 348 and 365 amino acids, respectively. Porcine CREB3 comprises nine exons and eight introns, whereas CREB2 consists of three exons and two introns. CREB2 and CREB3 were cytogenetically assigned to porcine chromosome 5p and 1q28, respectively. Tissue transcription analysis revealed that both porcine CREB2 and CREB3 mRNA were ubiquitously detected in all examined tissues. Additionally, we cloned the 5' flank genomic sequence of porcine CREB3 and characterized several putative transcription factor recognition sites including SP1, NF-kappaB, AP-1 and AP-2 in its promoter region. Our studies provide basic molecular information helpful for further investigation of the function of the two genes in pig models.
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Affiliation(s)
- M Qi
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Xiao ZJ, Zhang GP, Zhang JH, Jin SR, Yang DZ, Zhang RR, Yan ZF, Su H, Wu WC. [Measurement of bone mineral content of calcaneus by monophoton absorptiometry]. Hua Xi Yi Ke Da Xue Xue Bao 1988; 19:265-6. [PMID: 3253171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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