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Parzyck CT, Gupta NK, Wu Y, Anil V, Bhatt L, Bouliane M, Gong R, Gregory BZ, Luo A, Sutarto R, He F, Chuang YD, Zhou T, Herranz G, Kourkoutis LF, Singer A, Schlom DG, Hawthorn DG, Shen KM. Absence of 3a 0 charge density wave order in the infinite-layer nickelate NdNiO 2. Nat Mater 2024; 23:486-491. [PMID: 38278983 PMCID: PMC10990928 DOI: 10.1038/s41563-024-01797-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/03/2024] [Indexed: 01/28/2024]
Abstract
A hallmark of many unconventional superconductors is the presence of many-body interactions that give rise to broken-symmetry states intertwined with superconductivity. Recent resonant soft X-ray scattering experiments report commensurate 3a0 charge density wave order in infinite-layer nickelates, which has important implications regarding the universal interplay between charge order and superconductivity in both cuprates and nickelates. Here we present X-ray scattering and spectroscopy measurements on a series of NdNiO2+x samples, which reveal that the signatures of charge density wave order are absent in fully reduced, single-phase NdNiO2. The 3a0 superlattice peak instead originates from a partially reduced impurity phase where excess apical oxygens form ordered rows with three-unit-cell periodicity. The absence of any observable charge density wave order in NdNiO2 highlights a crucial difference between the phase diagrams of cuprate and nickelate superconductors.
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Grants
- DE-SC0019414 U.S. Department of Energy (DOE)
- DE-AC02-05CH11231 U.S. Department of Energy (DOE)
- DE-AC02-06CH11357 U.S. Department of Energy (DOE)
- FA9550-21-1-0168 United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research (AF Office of Scientific Research)
- DMR-2104427 National Science Foundation (NSF)
- NNCI-2025233 National Science Foundation (NSF)
- GBMF3850 Gordon and Betty Moore Foundation (Gordon E. and Betty I. Moore Foundation)
- GBMF9073 Gordon and Betty Moore Foundation (Gordon E. and Betty I. Moore Foundation)
- Part of the research described in this paper was performed at the Canadian Light Source, a national research facility of the University of Saskatchewan, which is supported by the Canada Foundation for Innovation (CFI), the Natural Sciences and Engineering Research Council (NSERC), the National Research Council (NRC), the Canadian Institutes of Health Research (CIHR), the Government of Saskatchewan, and the University of Saskatchewan.
- The microscopy work at Cornell was supported by the NSF PARADIM, with additional support from Cornell University, the Weill Institute, the Kavli Institute at Cornell, and the Packard Foundation.
- G.H. acknowledges support from Severo Ochoa FUNFUTURE (No. CEX2019-000917-S) of the Spanish Ministry of Science and Innovation and by the Generalitat de Catalunya (2021 SGR 00445).
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Affiliation(s)
- C T Parzyck
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - N K Gupta
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Y Wu
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - V Anil
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - L Bhatt
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
| | - M Bouliane
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - R Gong
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - B Z Gregory
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - A Luo
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - R Sutarto
- Canadian Light Source, Saskatoon, Saskatchewan, Canada
| | - F He
- Canadian Light Source, Saskatoon, Saskatchewan, Canada
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - T Zhou
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - G Herranz
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra, Spain
| | - L F Kourkoutis
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
| | - A Singer
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - D G Schlom
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
- Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - D G Hawthorn
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - K M Shen
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA.
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra, Spain.
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA.
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Parzyck CT, Gupta NK, Wu Y, Anil V, Bhatt L, Bouliane M, Gong R, Gregory BZ, Luo A, Sutarto R, He F, Chuang YD, Zhou T, Herranz G, Kourkoutis LF, Singer A, Schlom DG, Hawthorn DG, Shen KM. Publisher Correction: Absence of 3a 0 charge density wave order in the infinite-layer nickelate NdNiO 2. Nat Mater 2024; 23:440. [PMID: 38347120 PMCID: PMC10917676 DOI: 10.1038/s41563-024-01832-0] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Affiliation(s)
- C T Parzyck
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - N K Gupta
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Y Wu
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - V Anil
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
| | - L Bhatt
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
| | - M Bouliane
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - R Gong
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - B Z Gregory
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - A Luo
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - R Sutarto
- Canadian Light Source, Saskatoon, Saskatchewan, Canada
| | - F He
- Canadian Light Source, Saskatoon, Saskatchewan, Canada
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - T Zhou
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA
| | - G Herranz
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra, Spain
| | - L F Kourkoutis
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
| | - A Singer
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - D G Schlom
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
- Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - D G Hawthorn
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - K M Shen
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY, USA.
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Bellaterra, Spain.
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA.
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Li J, Jin X, Kong X, Hu N, Li X, Wang L, Liu M, Li C, Liu Y, Sun L, Gong R. Correlation of endolymphatic hydrops and perilymphatic enhancement with the clinical features of Ménière's disease. Eur Radiol 2024:10.1007/s00330-024-10620-y. [PMID: 38308680 DOI: 10.1007/s00330-024-10620-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 02/05/2024]
Abstract
OBJECTIVES To use three-dimensional real inversion recovery (3D-real IR) MRI to investigate correlations between endolymphatic hydrops (EH) grades or the degree of perilymphatic enhancement (PE) and clinical features of Ménière's disease (MD), as previous findings have been inconsistent. METHODS A total of 273 consecutive patients with definite unilateral MD were retrospectively enrolled from September 2020 to October 2021. All patients underwent 3D-real IR and 3D-T2WI 6 h after intravenous gadolinium injection. MD-related symptom duration and vertigo frequency were recorded. EH grades were evaluated, the signal intensity ratio (SIR) was measured, and correlations between clinical features and EH, PE were assessed respectively. RESULTS The study included 123 males and 150 females, with a mean age of 53.0 years. A longer duration of vertigo was associated with higher cochlear EH grades, whereas the opposite was true for the duration of aural fullness. A longer time since vertigo onset was associated with higher vestibular EH grades; the opposite was true for the duration of individual vertigo attacks. The multiple regression analysis revealed that age, tinnitus duration, and vestibular EH were risk factors for SIR. Furthermore, the low-frequency hearing threshold (HT) was a risk factor for cochlear and vestibular EH, and the SIR. CONCLUSION The EH grade and SIR (an indicator for the quantitative evaluation of PE) were correlated with clinical features and HT of MD; thus, imaging can be a valuable tool in planning individualised treatment. CLINICAL RELEVANCE STATEMENT This study revealed that the grade of endolymphatic hydrops and degree of perilymphatic enhancement positively correlates with the length of time since onset of clinical symptoms and hearing thresholds in patients with Ménière's disease, facilitating the tailored treatment. KEY POINTS • Relationships between 3-dimensional real inversion recovery features and clinical symptoms in Ménière's disease are unknown. • Symptom duration and hearing thresholds correlated with endolymphatic hydrops grades and degree of perilymphatic enhancement. • MRI features correlate with MD severity; thus, imaging is valuable for planning tailored treatment.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Xianwen Jin
- Department of Radiology, Shandong Maternal and Child Health Care Hospital, Jinan, People's Republic of China
| | - Xiao Kong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Xiaoqin Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China
| | - Mengxiao Liu
- Diagnostic Imaging, MR scientific Marketing, Siemens Healthineers Ltd, Shanghai, People's Republic of China
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, People's Republic of China
| | - Yafei Liu
- Shandong Mental Health Center, Shandong University, 49 Wenhua Dong Road, Jinan, People's Republic of China.
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, People's Republic of China.
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, People's Republic of China
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Li J, Li L, Jin X, Hu N, Kong X, Wang L, Li X, Dou W, Sun L, Li C, Gong R. MRI can help differentiate Ménière's disease from other menieriform diseases. Sci Rep 2023; 13:21527. [PMID: 38057393 PMCID: PMC10700494 DOI: 10.1038/s41598-023-49066-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/04/2023] [Indexed: 12/08/2023] Open
Abstract
It is difficult to distinguish other pathologies mimicking Ménière's disease (MD) clinically. This study aims to investigate the differences of imaging findings and features between MD and other menieriform diseases via intravenous gadolinium-enhanced magnetic resonance imaging (MRI). 426 patients with menieriform symptoms, including MD, vestibular migraine (VM), and vestibular schwannoma (VS), underwent 3D-FLAIR and 3D-T2WI MRI 6 h after the intravenous gadolinium injection. MR images were analyzed for inner ear morphology, perilymphatic enhancement (PE), EH and other abnormalities. EH was observed at a higher rate in MD patients (85.71%) than patients with other menieriform diseases (VM group = 14.75%, VS group = 37.50%). The prevalence of unilateral EH as well as both cochlear and vestibular EH showed significant differences between MD and VM groups. The prevalence of cochlear EH (I and II) and vestibular EH (II and III) was different between MD and VM groups. The prevalence of PE was higher in MD than VM group. The degrees of cochlear and vestibular hydrops were higher in the definite than probable MD group (P < 0.05). Using these imaging features, MRI can be used to help differentiate MD from other menieriform diseases.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Long Li
- Hospital office, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xianwen Jin
- Department of Radiology, Shandong Maternal and Child Health Care Hospital, Jinan, People's Republic of China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiao Kong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiaoqin Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Weiqiang Dou
- GE Healthcare, MR Research China, Beijing, 100000, People's Republic of China
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China.
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China.
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
- Gong Ruozhen Innovation Studio, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China
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Xie M, Deng Y, Wang L, Zhang X, Gong R, Tang J. Corneal lenticule implantation combined with PTK and PRK to correct hyperopia. J Fr Ophtalmol 2023; 46:e352-e357. [PMID: 37544781 DOI: 10.1016/j.jfo.2023.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/15/2023] [Indexed: 08/08/2023]
Affiliation(s)
- M Xie
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China; West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Y Deng
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China
| | - L Wang
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China
| | - X Zhang
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China
| | - R Gong
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China
| | - J Tang
- Department of Ophthalmology, Sichuan University, West China Hospital, No. 37, Guoxue Alley, 610041 Chengdu, Sichuan, China.
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Li J, Wang L, Hu N, Kong X, Ge X, Liu M, Li C, Sun L, Gong R. Improving diagnostic accuracy for probable and definite Ménière's disease using magnetic resonance imaging. Neuroradiology 2023; 65:1371-1379. [PMID: 37328652 DOI: 10.1007/s00234-023-03176-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 06/04/2023] [Indexed: 06/18/2023]
Abstract
PURPOSE To determine whether magnetic resonance imaging (MRI) can improve diagnostic accuracy for definite and probable Ménière's disease (MD) based on perilymphatic enhancement (PE) and endolymphatic hydrops (EH). METHODS 363 patients with unilateral MD (probable MD, n = 75 and definite MD, n = 288) were recruited. A three-dimensional zoomed imaging technique with parallel transmission SPACE real inversion recovery was performed 6 h after intravenous gadolinium injection to investigate the presence of PE and to evaluate the grading and location of EH. PE and EH characteristics were analyzed and compared between the probable and definite MD groups. RESULTS The cochlear and vestibular EH grading on the affected side was more severe in the definite MD group than that in the probable MD group (P < 0.001). The EH locations within the inner ear on the affected side also differed between the two groups (χ2 = 81.15, P < 0.001). The signal intensity ratio (SIR) on the affected side was significantly higher in the definite MD group than in the probable MD group (t = 2.18, P < 0.05). The assessment of the combination of PE and EH parameters within the inner ear revealed a higher area under the curve (AUC) in the definite MD group (0.82) compared with the AUCs of the parameters assessed alone. CONCLUSION The assessment of a combination of PE and EH parameters improved the diagnostic accuracy for probable and definite MD, suggesting that MRI findings may be clinically useful in the diagnosis of MD.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiao Kong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Xiaoqian Ge
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
| | - Mengxiao Liu
- MR Scientific Marketing, Diagnostic Imaging, Siemens Healthineers Ltd, Shanghai, China
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China.
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, 4 Duan Xing-Xi Road, Jinan, China
- Gong Ruozhen Innovation Studio, Shandong Provincial Hospital, Shandong University, 324 Jing Wu Wei-Qi Road, Jinan, China
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Ni YB, Tian ZR, Yang JP, Wang YQ, Tian B, Gong R, Zhao W, Wang ZJ. [Quantitative study of supraspinatus tendon injury grading based on synthetic magnetic resonance imaging]. Zhonghua Yi Xue Za Zhi 2023; 103:1603-1610. [PMID: 37248059 DOI: 10.3760/cma.j.cn112137-20220926-02029] [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: 05/31/2023]
Abstract
Objective: To investigate the diagnostic value of quantitative parameters of synthetic magnetic resonance imaging (SyMRI) in the grade of supraspinatus tendon injury. Methods: Ninety-seven patients with clinical definite of supraspinatus tendon injury from July 2021 to July 2022 in General Hospital of Ningxia Medical University were prospectively collected (case group), including 54 males and 43 females, with an age of 29 to 56 (37.4±9.6) years. According to the results of shoulder arthroscopy, the case group were divided into three subgroups included tendinopathy group (37 cases, grade Ⅱ), partial tear group (34 cases, grade Ⅲ) and complete tear group (26 cases, grade Ⅳ). During the same period, 28 normal rotator cuff volunteers without supraspinatus tendon injury were recruited (control group), including 16 males and 12 females, aged 23 to 49 (36.1±7.2) years, and marked as grade Ⅰ. All the subjects underwent MRI scan of articulatio humeri included T1-weighted imaging(T1WI) fast spin echo(FSE) sequences in axial view, T2-weighted imaging(T2WI) fat suppression(FS) sequences in axial view, T2WI FS sequences in oblique coronal view, proton density-weighted (PDW) imaging in oblique sagittal view and SyMRI in oblique coronal view. The supraspinatus tendon was divided into lateral, medial and middle subregions according to its shape in oblique coronal T2WI view, two radiologists measured the T1, T2 and PD values of the supraspinatus tendon. The interclass correlation coefficient (ICC) were used to compare the consistency between and within observers. One-way analysis of variance or Kruskal-Wallis H test were used to compare the differences of quantitative parameters in different grades, the multivariate logistic regression model was used to analyze the risk factors of supraspinatus tendon injury grade, and the receiver operating characteristic (ROC) curves and area under curve (AUC) was drawn and calculated to evaluate the diagnostic efficacy. The Spearman correlation was used to analyze the correlation between the quantitative values and grades of supraspinatus tendon injury. Results: The ICC values of T1, T2 and PD values for the three subregions of the supraspinatus tendon were greater than 0. 700. The differences of T1 values in the lateral subregion, T2 values in the lateral and middle subregions were statistically significant in the overall comparison across different grades (all P<0. 001).The differences of T1 values in the middle and medial subregions, T2 values in the medial subregion and PD values in the lateral, middle and medial subregions were not statistically significant in the overall comparison of different grades (all P>0. 05). Multiple logistic regression model analysis showed that T2 values in the lateral and middle subregions were related factors for the grade of supraspinatus tendon injury[ OR (95%CI):1.123 (1.037-1.216), 0.122 (1.151-1.197);all P<0.001 ]. The AUC of the T2 values in lateral subregion diagnosing grade Ⅰ vs grade Ⅳ, grade Ⅱ vs grade Ⅳ and grade Ⅲ vs grade Ⅳ were 0.891(95%CI: 0.801-0.981), 0.797(95%CI: 0.680-0.914), 0.723(95%CI: 0.594-0.853) (all P<0.001), and the AUC of the T2 values in middle subregion diagnosing grade Ⅰ vs Ⅳ, grade Ⅱ vs Ⅳ, grade Ⅱ vs Ⅲ, and grade Ⅰ vs Ⅲ were 0.946 (95%CI: 0.849-0.989), 0.886 (95%CI: 0.809-0.962), 0.746 (95%CI: 0.631-0.861), 0.843 (95%CI: 0.745-0.941)(all P<0.001). The T2 values in the lateral and middle subregions were positively correlated with the grade of supraspinatus tendon injury (r=0.542, 0.615; both P<0.001), while T1 values and T2 values in the medial subregions were not significantly correlated with the grade of supraspinatus tendon injury (both P>0.05). Conclusion: SyMRI has high clinical application value in the grading of supraspinatus tendon injury, especially T2 value can be used as an effective quantitative parameter for the grading of supraspinatus tendon injury.
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Affiliation(s)
- Y B Ni
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - Z R Tian
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - J P Yang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - Y Q Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - B Tian
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - R Gong
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - W Zhao
- Basic Medical College of Ningxia Medical University, Yinchuan 750001, China
| | - Z J Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
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Li J, Sun L, Hu N, Li L, Song G, Xu H, Xu T, Cheng Y, Xiao L, Wang L, Gong R, Li C. A Novel MR Imaging Sequence of 3D-ZOOMit Real Inversion-Recovery Imaging Improves Endolymphatic Hydrops Detection in Patients with Ménière Disease. AJNR Am J Neuroradiol 2023; 44:595-601. [PMID: 37105675 PMCID: PMC10171393 DOI: 10.3174/ajnr.a7842] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/08/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND AND PURPOSE The detection rate of premortem MR imaging endolymphatic hydrops is lower than that of postmortem endolymphatic hydrops in Ménière disease, indicating that current MR imaging techniques may underestimate endolymphatic hydrops. Therefore, we prospectively investigated whether a novel high-resolution MR imaging technique, the 3D zoomed imaging technique with parallel transmission real inversion-recovery (3D-ZOOMit real IR), would improve the detection of endolymphatic hydrops compared with conventional 3D TSE inversion-recovery with real reconstruction. MATERIALS AND METHODS Fifty patients with definite unilateral Ménière disease were enrolled and underwent 3D-ZOOMit real IR and 3D TSE inversion-recovery with real reconstruction 6 hours after IV gadolinium injection. The endo- and perilymph spaces were scored separately. The contrast-to-noise ratio, SNR, and signal intensity ratio of the 2 sequences were respectively calculated and compared. The presence of endolymphatic hydrops was evaluated. RESULTS The endolymphatic space in the cochlea and vestibule was better visualized with 3D-ZOOMit real IR than with conventional 3D TSE inversion-recovery with real reconstruction (P < .001). There were differences between the 2 sequences in the evaluation of no cochlear hydrops and cochlear hydrops (both, P < .017). All contrast-to-noise ratio, SNR, and signal intensity ratio values of 3D-ZOOMit real IR images were statistically higher than those of conventional 3D TSE inversion-recovery with real reconstruction (all, P < .001). CONCLUSIONS The 3D-ZOOMit real IR sequences are superior to conventional 3D TSE inversion-recovery with real reconstruction sequences in visualizing the endolymphatic space, detecting endolymphatic hydrops, and discovering contrast permeability.
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Affiliation(s)
- J Li
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
| | - L Sun
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
| | - N Hu
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
| | - L Li
- Medical Service (L.L.), Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - G Song
- Department of Radiology (G.S.), Shandong Province Qianfoshan Hospital, Jinan, China
| | - H Xu
- Department of Radiology (H.X., R.G., C.L.)
| | - T Xu
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
| | - Y Cheng
- Siemens Healthineers Digital Technology (Shanghai) Co. Ltd (Y.C.), Shanghai, China
| | - L Xiao
- MR Scientific Marketing (L.X.), Diagnostic Imaging, Siemens Healthineers Ltd, Shanghai, China
| | - L Wang
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
| | - R Gong
- From the Departments of Radiology (J.L., L.S., N.H., T.X., L.W., R.G.)
- Department of Radiology (H.X., R.G., C.L.)
- Gong Ruozhen Innovation Studio (R.G.), Shandong Provincial Hospital, Shandong University, Jinan, China
| | - C Li
- Department of Radiology (H.X., R.G., C.L.)
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Li J, Wang L, Hu N, Li L, Song G, Xu H, Xu T, Dou W, Li C, Yan W, Sun L, Gong R. Longitudinal variation of endolymphatic hydrops in patients with Ménière's disease. Ann Transl Med 2023; 11:44. [PMID: 36819498 PMCID: PMC9929744 DOI: 10.21037/atm-22-6313] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
Background The relationships of endolymphatic hydrops (EH) and perilymphatic enhancement (PE) with Ménière's disease (MD) remains unclear. This study aimed to describe the dynamic variation of EH and PE for MD patients over 2 hospitalizations by applying magnetic resonance imaging (MRI) to further clarify the relationships of EH and PE with MD. Methods A total of 77 MD patients who underwent inner ear MRI after intravenous administration of gadolinium and pure-tone average (PTA) testing during a first and second hospitalization were included. The degree of EH and PE were evaluated via MRI, and the duration and frequency of vertigo attacks and PTA were collected and recorded. The PTA, EH, and PE for the 2 hospitalizations were compared, and the relationships of EH and cochlear PE with the MD stage were investigated. Results There was no difference between the 2 hospitalizations for duration of vertigo attacks or frequency of vertigo attacks. However, there were significant differences in PTA (Z=-3.02, P=0.003). Additionally, the cochlear and vestibular EH in the asymptomatic ear at the second hospitalization was significantly worse than that of the first hospitalization (Z=-2.33 and -2.49, P=0.020 and 0.013, respectively), while there were no differences in EH and PE in the affected ear (all P>0.05). Moreover, the degree of cochlear and vestibular EH was correlated with MD stage (both P<0.01). Conclusions Although EH and PE in the affected ear were unchanged over 2 hospitalizations, an underlying EH in the asymptomatic ear and hearing loss in the affected ear for MD patients developed longitudinally with the duration of disease, and EH varied with the natural course of MD whereas PE did not. Therefore, EH instead of PE is necessary but insufficient to cause the clinical symptoms of MD.
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Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Linsheng Wang
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Long Li
- Department of Medical Service, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Gesheng Song
- Department of Radiology, Shandong Province Qianfoshan Hospital, Jinan, China
| | - Han Xu
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Ting Xu
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Weiqiang Dou
- GE Healthcare, MR Research China, Beijing, China
| | - Chuanting Li
- Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Wenqing Yan
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial ENT Hospital, Shandong University, Jinan, China;,Department of Radiology, Shandong Provincial Hospital, Shandong University, Jinan, China;,Gong Ruozhen Innovation Studio, Shandong Provincial Hospital, Shandong University, Jinan, China
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Gong R, Kafyeke R, Bah B, Weber A, Morsa M, Deslandres C, Jantchou P. A81 TRANSITION PRACTICES FROM PEDIATRIC TO ADULT CARE OF CHILDREN LIVING WITH CROHN’S DISEASE IN QUEBEC. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859349 DOI: 10.1093/jcag/gwab049.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Nearly 25% of Crohn’s disease cases are diagnosed during childhood. Among them, several adolescents may have extensive or complex disease implying specific needs during transition to adult care. Aims The primary aim was to describe current transition practices from pediatric to adult care in patients diagnosed with Crohn’s disease at CHU Sainte-Justine. The secondary aim was to determine factors that influenced the type of adult health centers (academic vs non-academic) to which patients were referred. Methods This single center study included patients diagnosed with Crohn’s disease at CHU Sainte-Justine between 2009 and 2019. Adult centers were separated into five categories: academic centers in Montreal (CHU-Mtl) and outside of Montreal (CHU), non-academic centers in Montreal (CHG-Mtl) and outside of Montreal (CHG), and other centers. The following factors influencing the transfer to an academic center were analyzed in a multivariate logistic regression model: age at diagnosis, gender, disease location, disease activity: relapses, hospitalizations, emergency room (ER) visits, and place of residence. Results A total of 366 patients were included: 44% female, median (IQR) age at transfer 18.0 (17.9–18.4). Among them, 169 (48%) were transferred to CHU-Mtl, 144 (39%) to CHG, 22(6%) to CHU, 4 (1%) to CHG-Mtl, 27 (7%) to other centers. There was a significant increase in the annual number of patients referred to CHG and CHU-Mtl across the decade, compared to other centers. Patients transferred to CHU-Mtl had more relapses per year (mean (SD) 0.8 (0.5) versus patients transferred to CHU, CHG and CHG-Mtl, p=0.0348), and 57% (N=97) of patients sent to CHU-Mtl had already visited the ER, as compared to 54%, 40% and 25% for CHU, CHG and CHG-Mtl respectively (p=0.0258). However, gender, age at diagnosis, maintenance treatment, number and duration of hospitalisations, extraintestinal manifestations, perianal inflammation or extensive disease location did not correlate with the type of adult center. Place of residence played a role in the choice of adult center: 56% (N= 95) of patients transferred to CHU-Mtl lived in Montreal (p<0.0001). Conclusions Clinical evolution and disease burden have an impact on the type of adult center. Efforts should be put to understand patient factors associated with the transfer to an academic vs non-academic center, for a better utilization of healthcare resources and adequate patient quality of life during transition. Funding Agencies NonePrincipal researcher funds
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Affiliation(s)
- R Gong
- Universite de Montreal, Montreal, QC, Canada
| | - R Kafyeke
- Universite de Montreal, Montreal, QC, Canada
| | - B Bah
- Universite de Montreal, Montreal, QC, Canada
| | - A Weber
- Centre Hospitalier de l’Universite de Montreal, Montreal, QC, Canada
| | - M Morsa
- Universite Sorbonne Paris Nord, Villetaneuse, Île-de-France, France
| | - C Deslandres
- Service de gastro-entérologie, CHU Sainte-Justine, Montréal, QC, Canada
| | - P Jantchou
- Pediatrics, Sainte Justine University Hospital, Montreal, QC, Canada
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Gong R, Muehlberg C, Wegscheider M, Knoesche T, Classen J. P 40. β-γ phase-amplitude coupling during movements in Parkinson's disease. Clin Neurophysiol 2021. [DOI: 10.1016/j.clinph.2021.02.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Chen B, Guan X, Dworkin L, Gong R. POS-453 MC1R SIGNALING PROTECTS AGAINST EXPERIMENTAL MEMBRANOUS NEPHROPATHY AND MEDIATES THE BENEFICIAL EFFECT OF MELANOCORTIN THERAPY VIA REGULATION OF HUMORAL IMMUNE RESPONSES. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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13
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Gong R, Mühlberg C, Wegscheider M, Nikulin V, Knösche T, Classen J. P58 Increased phase-amplitude coupling in Parkinson’s disease: Evidence from source localized electroencephalography. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Wang T, Ma LM, Zhu QJ, Gong R, Gao ZL, Tian WW. [Clinical analysis of the timing and efficacy of allogeneic stem cell transplantation for severe aplastic anemia with infections]. Zhonghua Xue Ye Xue Za Zhi 2020; 40:959-961. [PMID: 31856449 PMCID: PMC7342384 DOI: 10.3760/cma.j.issn.0253-2727.2019.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- T Wang
- Department of Hematology, Shanxi Dayi Hospital of Shanxi Medical University, Taiyuan 030032, China
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Shi W, Lu Y, Gong R, Sun JJ, Liu G. Serum miR-629 is a novel molecular marker for diagnosis and the prognosis of pancreatic cancer. Eur Rev Med Pharmacol Sci 2019; 22:5187-5193. [PMID: 30178840 DOI: 10.26355/eurrev_201808_15715] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Increasing evidence indicates that dysregulation of miRNAs is involved in tumor progression and development. We aimed to determine potential values of miR-629 as a serum diagnostic and prognostic biomarker in pancreatic cancer (PC). PATIENTS AND METHODS MiR-629 expression levels in PC tissues and serum were measured by quantitative Real-time reverse transcription-polymerase chain reaction (qRT-PCR). Receiver operating characteristic analysis (ROC) was utilized to assess the predictive power of serum miR-629 for PC. Then, the associations of serum miR-629 expression levels with clinicopathological features and prognosis were evaluated. RESULTS We found that the expression levels of miR-629 were significantly upregulated in both PC tissues and serum in comparison with matched normal tissues and healthy controls, respectively. Importantly, serum miR-629 could efficiently screen PC patients from healthy controls (AUC=0.765). The diagnosis capability of serum miR-629 was significantly higher than that of CA19-9, and the combination of two molecules had higher diagnosis capacity. Higher expression of serum miR-629 in PC patients was associated with advanced TNM stage (p=0.000) and distant metastasis (p=0.003). Moreover, Kaplan-Meier analysis indicated that patients with high expression of serum miR-629 had significantly shorter overall survival (p=0.0022) and disease-free survival (p=0.0003) than the low expression group. Univariate and multivariate analysis showed that serum miR-629 was a significant and independent prognostic predictor for both overall survival and disease-free survival of PC patients. CONCLUSIONS This study suggested serum miR-629 may be a potential biomarker for the diagnosis and prognosis of PC.
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Affiliation(s)
- W Shi
- Department of Hepatopancreatobiliary Surgery, The Second Hospital of Tianjin Medical University, Tianjin, China.
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Li J, Wang M, Sun L, Zhao H, Song G, Tian J, Hu N, Li M, Dou W, Qu J, Wang H, Gong R. The correlation analysis of intralabyrinthine haemorrhage magnetic resonance imaging with hearing loss and prognosis: A retrospective analysis of 207 cases. Clin Otolaryngol 2019; 44:1096-1100. [PMID: 31241859 DOI: 10.1111/coa.13397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/06/2019] [Accepted: 05/12/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Jinye Li
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Mingming Wang
- Department of Otolaryngology‐Head and Neck Surgery, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Lixin Sun
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Hui Zhao
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Gesheng Song
- Department of Radiology Shandong province Qianfoshan Hospital Jinan China
| | - Jing Tian
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Na Hu
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Min Li
- GE Healthcare Beijing China
| | | | | | - Haibo Wang
- Department of Otolaryngology‐Head and Neck Surgery, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
| | - Ruozhen Gong
- Department of Radiology, Shandong Provincial ENT Hospital Shandong Provincial ENT Hospital affiliated to Shandong University Jinan China
- Gong Ruozhen Innovation Studio Shandong Medical Imaging Research Institute Affiliated to Shandong University Jinan China
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Wang T, Ma LM, Zhu QJ, Gong R, Gao ZL, Tian WW. [Comparison of IA and HAD for induction remission therapy of FLT3-ITD positive acute myeloid leukemia patients]. Zhonghua Xue Ye Xue Za Zhi 2019; 40:330-332. [PMID: 31104447 PMCID: PMC7343015 DOI: 10.3760/cma.j.issn.0253-2727.2019.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 11/24/2022]
Affiliation(s)
- T Wang
- Department of Hematology, Shanxi Da Yi Hospital of Shanxi Medical University, Taiyuan 030032, China
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Gong Y, Yang J, Liu F, Li Z, Gong R, Wei T. Cyclin-dependent kinase 7 is a potential therapeutic target in papillary thyroid carcinoma. J BIOL REG HOMEOS AG 2018; 32:1361-1368. [PMID: 30574740] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Given the pathological incidence of metastases or radioiodine-refractory papillary thyroid carcinoma (PTC) is increasing worldwide, patients have little alternatives when choosing effective drugs. Therefore, it is necessary to develop new therapeutic targets for PTC treatment. CDK7 is a member of the cyclindependent protein kinase (CDK) family, which plays an important role in various types of cancers. In this study, we found CDK7 were upregulated in PTC cell lines compared to normal thyroid cells using qRT-PCR and Western blot. Furthermore, using cell counting kit-8 (CCK-8) assay and 5-ethynyl-2-deoxyuridine (EdU) assay, we discovered cell growth ratio was positively correlated to the expression level of CDK7. Cell cycle analysis showed that the cells with higher CDK7 expression levels were prone to be in S phase. More importantly, we tested the inhibitory effects of BS-181 on CDK7 both in vitro and in vivo. Results obtained from this study indicated that BS-181 not only suppressed the cell proliferation in vitro, but also inhibited the tumor growth in nude mouse without changing mRNA and protein levels of CDK7. In conclusion, our study might provide a novel potential target for PTC therapy.
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Affiliation(s)
- Y Gong
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
| | - J Yang
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
| | - F Liu
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
| | - Z Li
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
| | - R Gong
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
| | - T Wei
- Department of Thyroid and Parathyroid Surgery Center, Sichuan University West China Hospital, China
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Hu XY, Zheng XY, Ma FR, Long M, Han R, Zhou LJ, Wang F, Gong R, Pan T, Zhang SX, Du B, Jin P, Guo CY, Zheng YQ, Liu M, He LH, Qiu JH, Xu M, Song L, Xu XH, Liu XW, Wang SP. [Prevalence of hearing disorders in China: a population-based survey in four provinces of China]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 51:819-825. [PMID: 27938607 DOI: 10.3760/cma.j.issn.1673-0860.2016.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the prevalence, severity of hearing disorders and demographics of people with hearing disorders based on the whole population in Jilin, Guangdong, Shannxi and Gansu provinces in China. Methods: According to " WHO Ear and Hearing Disorders Survey Protocol" , 144 clusters were chosen with probability proportional sampling(PPS) method from the four provinces covering 194, 688, 061 residents. Audiological test, otological examination and questionnaire surveying were conducted for all samples from August, 2014 to September, 2015. The hearing disorders were classified according to WHO criteria and classification. Results: Among 47 511 targeted residents, 45, 052 individuals (94.82% response rate) participated in the survey. The standardized prevalence rates of hearing disorders and disabling hearing disorders were 15.84 % and 5.17 % respectively. Almost 50% of people with hearing disorders had no awareness of it or its starting time. There was significant difference in the prevalence among people of different ages, genders, occupations, provinces, marital status and education levels. The prevalence of hearing disorders increased significantly as age grew. People above 60 years old occupied 55.31% of the total hearing disorders. The prevalence of hearing disorders among male, people of low education and those who lost husband or wife, as well as workers and farmers was relatively higher. Conclusions: The prevalence of hearing disorders is high, and hearing disorders are " invisible" . Demographics and socioeconomic factors significantly influence the prevalence of hearing disorders.
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Affiliation(s)
- X Y Hu
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - X Y Zheng
- Institute of Population Research, Peking University, Beijing 100871, China
| | - F R Ma
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - M Long
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - R Han
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - L J Zhou
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - F Wang
- China Rehabilitation Research Center for Deaf Children, Beijing 100029, China
| | - R Gong
- Institute of Population Research, Peking University, Beijing 100871, China
| | - T Pan
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - S X Zhang
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - B Du
- Department of Otorhinolaryngology Head and Neck Surgery, the First Hospital of Jilin University, Changchun 130021, China
| | - P Jin
- Department of Otorhinolaryngology Head and Neck Surgery, the First Hospital of Jilin University, Changchun 130021, China
| | - C Y Guo
- Language and Hearing Rehabilitation Center of Jilin Province, Changchun 130052, China
| | - Y Q Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
| | - M Liu
- Otorhinolaryngology Hospital of First Affiliated Hospital of Sun Yetsan University, Guangzhou 510080, China
| | - L H He
- Guangdong Rehabilitation Centre, Guangzhou 510055, China
| | - J H Qiu
- Department of Otorhinolaryngology Head and Neck Surgery, Xijing Hospital, Xi'an 710032, China
| | - M Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Second Affiliated Hospital, Xi'an Jiaotong University School of Medicine, Xi'an 710004, China
| | - L Song
- Language and Hearing Rehabilitation Center of Shanxi Province, Xi'an 710016, China
| | - X H Xu
- Department of Otorhinolaryngology, Lanzhou General Hospital, Lanzhou Command, Lanzhou 730050, China
| | - X W Liu
- Department of Otorhinolaryngology, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - S P Wang
- Hearing and Language Rehabilitation Center of Gangsu Province, Lanzhou 730050, China
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Xu S, Gong R. Clivus height value: a new diagnostic method for basilar invagination at CT. Clin Radiol 2016; 71:1200.e1-5. [DOI: 10.1016/j.crad.2016.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 03/22/2016] [Accepted: 04/05/2016] [Indexed: 11/29/2022]
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Zhao J, Yang XB, Wang JL, Wang SJ, Gong R, Zheng Z, Liu LQ. Amblyopic-related frontal changes in an orientation discrimination task: a research of P3a event-related potentials in anisometropic amblyopia. Hippokratia 2016; 20:60-66. [PMID: 27895445 PMCID: PMC5074400] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Amblyopic deficits in the primary and secondary visual cortex have been demonstrated broadly. However, the cognitive process at late stage originating in higher brain area in amblyopes hasn't been studied yet. The aim of this study was to investigate the late cognitive process at the frontal lobe in anisometropic amblyopes of a distinct degree, using visual event-related potential (ERP) techniques. METHODS Thirteen severe anisometropic amblyopes, 14 mild-to-moderate anisometropic amblyopes, and 13 control subjects participated in this study. Oddball paradigm (three stimuli: target, novel, and non-target stimuli) of low spatial frequency (1 cycle per degree, CPD) was used to elicit brain ERP waves. Reaction time, accuracy, latency, and amplitude of P3a waves evoked by novel stimuli at Fz electrode (the central electrode at frontal lobe), were analyzed statistically. RESULTS Neither accuracy nor reaction time showed significant difference among the three groups. The latency of N200 wave showed no significant difference. The latency of P3a wave was delayed in the amblyopes compared with healthy controls, but there was no significant difference between severe and mild-to-moderate amblyopes. P3a amplitude in mild-to-moderate amblyopes was significantly higher than in controls and severe amblyopes. CONCLUSIONS Our findings indicated that the cognitive process in anisometropic amblyopes was impaired, and the compensative effect of P3a amplitude was shown in mild-to-moderate amblyopes. P3a visual ERP could become a useful tool to investigate cognitive processing in amblyopes. Hippokratia 2016, 20(1): 60-66.
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Affiliation(s)
- J Zhao
- Department of Optometry and Visual Science, West China School of Medicine, Sichuan University, Chengdu, China
| | - X B Yang
- Department of Optometry and Visual Science, West China School of Medicine, Sichuan University, Chengdu, China
| | - J L Wang
- Department of Optometry and Visual Science, West China School of Medicine, Sichuan University, Chengdu, China
| | - S J Wang
- Department of Medical Engineering, West China School of Medicine, Sichuan University, Chengdu, China
| | - R Gong
- Department of Optometry and Visual Science, West China School of Medicine, Sichuan University, Chengdu, China
| | - Z Zheng
- Neurobiological Laboratory Center, West China School of Medicine, Sichuan University, Chengdu, China
| | - L Q Liu
- Department of Optometry and Visual Science, West China School of Medicine, Sichuan University, Chengdu, China
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Gong R, Bruder R, Schweikard A, Schlosser J, Hristov D. MO-DE-210-07: Investigation of Treatment Interferences of a Novel Robotic Ultrasound Radiotherapy Guidance System with Clinical VMAT Plans for Liver SBRT Patients. Med Phys 2015. [DOI: 10.1118/1.4925372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Gong R, Chen MH, Peng LS, Wei SL. Common genes in coronary artery disease from Europe, Asia and North America regardless of race and lifestyle. Eur Rev Med Pharmacol Sci 2015; 19:1092-1100. [PMID: 25855937] [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: 06/04/2023]
Abstract
OBJECTIVE Coronary artery disease (CAD) remains one of the major causes of death worldwide. Despite considerable advances in the prevention and treatment of CAD, its complications, morbidity and mortality still remain very high, and vary widely across different ethnic groups. MATERIALS AND METHODS To detect genes involved in the development of CAD, we collected gene expression studies in the blood samples of CAD patients from different continents by searching the Gene Expression Omnibus database (GEO), performed a comparative analysis of gene expression between CAD patients and normal controls (NC) in each continent and identified the common set of differentially expressed genes (DEGs) between CAD patients and NC across different continents. PPI networks of the common set of DEGs were established by Cytoscape software to understand their biological role in CAD. RESULTS A total of 575, 868 and 476 genes were identified to be significantly differentially expressed between CAD patients and NC in Asia, Europe and North America. 24 genes were found common in three different continents, and 6 genes were previously linked to CAD or atherosclerosis. In the PPIs network the significant hub proteins contained IRF4 (Degree = 23), PLAUR (Degree = 17) and HIST1H2AE (Degree = 15). CONCLUSIONS Not only did we detect gene expression differences in the blood samples between CAD and NC in Asia, Europe and North America population, but analysis of the three population groups revealed a common set of 24 genes regardless of differences related to race, ethnicity, lifestyle, and environmental factor which may provide key factors to understand the pathogenesis of CAD and lead to development of diagnostic markers and/or effective therapeutic strategies.
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Affiliation(s)
- R Gong
- Department of Gerontology, and Department of Cardiothoracic Surgery; The Third Municipal Hospital of Shijiazhuang City, Hebei, China.
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Quan Y, Liu J, Liu Z, Wu L, Gong R. Detection of hypoplasia of bony cochlear nerve canal by the opening threshold of virtual endoscopy: a pilot study. Acta Radiol 2014; 55:318-24. [PMID: 23926232 DOI: 10.1177/0284185113495832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 11/16/2022]
Abstract
BACKGROUND Dimensions of the bony cochlear nerve canal (BCNC) have been proposed as a potential diagnostic standard for BCNC hypoplasia, but the standard remains inconsistent. Some studies have revealed that computed tomography virtual endoscopy (CTVE) with variation of reconstruction threshold is good at identifying labyrinthine fistulas or semi-circular canal dehiscence. PURPOSE To examine diagnostic accuracy of VE in the evaluation of BCNC hypoplasia on basis of opening threshold. MATERIAL AND METHODS Twenty ears diagnosed with BCNC hypoplasia were included in this study. One hundred ears served as controls. The opening thresholds were measured by two reviewers. Intraclass correlation coefficients (ICC) were reported. The width of BCNC was obtained on transverse CT images. Association between the width of BCNC and opening threshold was assessed by using Spearman correlation coefficients. ROC curves were applied to assess the best cut-off value of opening threshold. RESULTS The opening threshold of BCNC was significantly higher in diseased ears (926 ± 308 Hounsfield units [HU]) than that in control ears (287 ± 72 HU). Inter-observer agreement was very good. The mean width of BCNC for diseased ears and control ears were 0.83 ± 0.36 mm and 2.21 ± 0.35 mm, respectively. Significant negative linear correlation was found between opening thresholds and width of BCNC (Spearman coefficient, -0.768; P < 0.001). The area under the ROC curve was 0.981. The cut-off opening thresholds of 408 for differentiation between the two groups provided the best combination of sensitivity (85%) and specificity (94%). CONCLUSION The VE with opening threshold may be an effective optional tool for prediction of hypoplasia of BCNC.
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Affiliation(s)
- Yong Quan
- CT Room, Shanxian Central Hospital, affiliated with Jining Medical College, Heze, PR China
| | - Jie Liu
- Department of Radiology, Wendeng Central Hospital, Weifang Medical College, Weihai, PR China
| | - Zhaoyu Liu
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, PR China
| | - Lebin Wu
- Shandong Medical Imaging Research Institute, Shandong University, Shandong, PR China
| | - Ruozhen Gong
- Shandong Medical Imaging Research Institute, Shandong University, Shandong, PR China
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Liu L, Wen Q, Gong R, Gilles L, Stankiewicz MJ, Li W, Guo M, Li L, Sun X, Li W, Crispino JD, Huang Z. PSTPIP2 dysregulation contributes to aberrant terminal differentiation in GATA-1-deficient megakaryocytes by activating LYN. Cell Death Dis 2014; 5:e988. [PMID: 24407241 PMCID: PMC4040682 DOI: 10.1038/cddis.2013.512] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 06/25/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 01/05/2023]
Abstract
GATA1 mutations are tightly associated with transient myeloproliferative disorder (TMD) and acute megakaryoblstic leukemia (AMKL) in children with Down syndrome. Numerous genes are altered in GATA-1-deficient megakaryocytes, which may contribute to the hyperproliferation and abnormal terminal differentiation of these malignant cells. In this study, we demonstrate that Pstpip2 is a GATA-1-repressed gene that controls megakaryopoiesis. Ectopic expression of PSTPIP2 impaired megakaryocytic differentiation as evidenced by a decrease of CD41 expression and reduced DNA content in K562 cells. PSTPIP2 overexpression also caused enhanced activation of Src family kinases and subsequently reduced ERK phosphorylation. Consistently, PSTPIP2 knockdown showed the opposite effect on differentiation and signaling. Moreover, the W232A mutant of PSTPIP2, defective in its interaction with PEST family phosphatases that recruit c-Src terminal kinase (CSK) to suppress Src family kinases, failed to inhibit differentiation and lost its ability to enhance Src family kinases or reduce ERK phosphorylation. In fact, the W232A mutant of PSTPIP2 promoted megakaryocyte differentiation. These observations suggest that PSTPIP2 recruiting PEST phosphatases somehow blocked CSK activity and led to enhanced activation of Src family kinases and reduced ERK phosphorylation, which ultimately repressed megakaryocyte differentiation. Supporting this idea, PSTPIP2 interacted with LYN and the expression of a dominant negative LYN (LYN DN) overwhelmed the inhibitory effect of PSTPIP2 on differentiation and ERK signaling. In addition, a constitutively active LYN (LYN CA) normalized the enhanced megakaryocyte differentiation and repressed ERK signaling in PSTPIP2 knockdown cells. Finally, we found that PSTPIP2 repressed ERK signaling, differentiation, and proliferation and verified that PSTPIP2 upregulation repressed megakaryocyte development in primary mouse bone marrow cells. Our study thus reveals a novel mechanism by which dysregulation of PSTPIP2 due to GATA-1 deficiency may contribute to abnormal megakaryocyte proliferation and differentiation in pathogenesis of related diseases.
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Affiliation(s)
- L Liu
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - Q Wen
- Department of Medicine, Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - R Gong
- Hubei International Travel Healthcare Center, Hubei Entry-Exit Inspection and Quarantine Bureau of P. R. China, Wuhan, Hubei, China
| | - L Gilles
- Department of Medicine, Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - M J Stankiewicz
- Department of Medicine, Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - W Li
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - M Guo
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - L Li
- Department of Hematology, Jiangsu Province Hospital of TCM, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - X Sun
- Department of Hematology, Jiangsu Province Hospital of TCM, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - W Li
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - J D Crispino
- Department of Medicine, Division of Hematology and Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Z Huang
- College of Life Sciences, Wuhan University, Wuhan, Hubei, China
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Sun J, Liu Z, Zhang H, Gong R, Wang H. [On the clinical application of spiral CT three-dimensional reconstruction of middle ear ossicles]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2012; 26:865-867. [PMID: 23285947] [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: 06/01/2023]
Abstract
OBJECTIVE To investigate the CT virtual endoscopy (CTVE) shows the display method of the normal structure of the middle ear, and evaluation of middle ear disease, particularly in the value and significance of the connection status of the ossicular chain, established display ossicular chain and middle ear structure methods. METHOD Volume scanning with a spiral CT unit was performed in forty normal cases and thirty patients with suspected lesions of middle ear. Respectively, with Germany's Siemens (Siemens SOMATOM Sensation 16) spiral CT the Inner Ear scanner patients with axial scanning, reconstruction of the original image, the software selected Fly-through A, B, C the point approach CTVE imaging studies. Focus ossicular chain connection status, and chronic otitis media shown the results of surgery in exploratory image control. RESULT Normal group CTVE in the hammer bone, incus promontory, facial nerve, the lateral semicircular canal display rate was 100%; stapes, the two arch of the display rate in three display levels, respectively, to 57.5%, 70.0%, 97.5%; round window, oval window was 90.0%, 93.0%, 97.5%. Ossicular injury, displacement, interruption, deletion, deformity in cases of otitis media, trauma, temporal bone malformations. CONCLUSION CTVE link relations between the three ossicles (such as interrupt, etc.) have a certain advantage. By choosing the appropriate approach, CTVE has a considerable advantage in the ossicles and their connections, relations as well as pathological state. By comparing CTVE in three different display levels,the technique of CTVE is considered to be an advantageous supplement of tomography.
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Affiliation(s)
- Jie Sun
- Department of Otorhinolaryngology, First Affiliated Hospital, Xinjiang Medical University, Urumqi, 830054, China
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Mu X, Quan Y, Shao J, Li J, Wang H, Gong R. Enlarged geniculate ganglion fossa: CT sign of facial nerve canal fracture. Acad Radiol 2012; 19:971-6. [PMID: 22770465 DOI: 10.1016/j.acra.2012.03.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 03/29/2012] [Accepted: 03/29/2012] [Indexed: 10/28/2022]
Abstract
RATIONALE AND OBJECTIVES The aim of this study was to preliminarily investigate whether an enlarged geniculate ganglion fossa (GGF) on temporal bone computed tomography can diagnose GGF fracture in patients with traumatic facial paralysis by evaluating the diameter of the GGF. MATERIALS AND METHODS Thirty-six patients who underwent computed tomography before confirmation of GGF fracture on otologic surgery were recruited into a study group. Additionally, a cohort of 107 patients with no histories of head trauma, no structural abnormalities of inner ear, and no clinical symptoms of facial nerve disability who underwent computed tomography for other reasons were selected as a control group. The diameters of the GGFs of the study group were evaluated by two observers and compared retrospectively with those of the control group. Wilcoxon's test was used to compare discrepancies of both sides, and intraclass correlation coefficients were used to evaluate intraobserver and interobserver reliability. RESULTS The measurement of diameters showed good interobserver and intraobserver consistency. The discrepancy in the measurement of transdiameter between both sides of the GGF on reformatted transverse images of the study group was significantly different from that of the control group (Wilcoxon's test, P < .001). Discrepancy in the GGF on transverse images of the study group was larger than that of the control group. A significant difference existed in the discrepancy in vertical diameter between the study and control groups (Wilcoxon's test, P < .001) as well. CONCLUSIONS An enlarged GGF on temporal bone computed tomography offers an additional sign for the diagnosis of GGF fracture in patients with traumatic facial paralysis.
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Gong R. Dual-Energy CT Angiography as a Screening Tool for Skull Base Arteriovenous Fistula in Patients with Pulsatile Tinnitus. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
BACKGROUND Dimensions of the bony cochlear nerve canal (BCNC) have been proposed as a potential diagnostic standard for hypoplasia of BCNC, but the standard remains inconsistent. We have previously found that a helix-like shape appears in normal BCNCs at VE images, whereas, the sign does not appear in some hypoplastic BCNCs. PURPOSE To retrospectively examine the feasibility of computed tomographic (CT) virtual endoscopy (VE) in the evaluation of hypoplasia of BCNC on the basis of absence of a helix-like shape. MATERIAL AND METHODS Twenty ears in 14 consecutive patients (mean age 5.5 years, range 1-15 years, 6 boys, 8 girls) diagnosed with hypoplasia of BCNC were included in this work. One hundred ears in 50 gender- and age-matched individuals (mean age 6.6 years, range 1-15 years, 29 boys, 21 girls) without inner ear disease and internal auditory canal (IAC) malformations served as controls. The presence or absence of a helix-like shape was evaluated by two independent reviewers. The value of VE for the diagnosis of hypoplasia of BCNC was assessed with clinical results and routine radiologic evaluation as the reference standard. Inter-observer agreement was calculated. Sensitivity, specificity, and accuracy were selected to test the diagnostic ability of the VE. RESULTS Absence of a helix-like shape was found in the cochlear area of 17 of 20 ears in patients with hypoplasia of BCNC but in none of the control subjects. Inter-observer agreement was substantial (к = 0.773). The diagnostic rates of absence of a helix-like shape for hypoplasia of BCNC in terms of sensitivity, specificity, and accuracy were 85%, 100%, and 98%, respectively. There were significant differences between the two groups with respect to VE findings for absence of a helix-like shape (P < 0.001). CONCLUSION The absence of a helix-like shape at VE images may be used as a potentially useful sign in the diagnosis of hypoplasia of BCNC.
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Affiliation(s)
- Yong Quan
- Shandong Medical Imaging Research Institute, Shandong Univeristy, Jinan, Shandong
| | - Lebin Wu
- Shandong Medical Imaging Research Institute, Shandong Univeristy, Jinan, Shandong
| | - Zushan Xu
- Department of Radiology, Wendeng Central Hospital, Weifang Medical College, Weihai, China
| | - Wuxian Gong
- Shandong Medical Imaging Research Institute, Shandong Univeristy, Jinan, Shandong
| | - Ruozhen Gong
- Shandong Medical Imaging Research Institute, Shandong Univeristy, Jinan, Shandong
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Lu QB, Wang ZP, Gong R, Sun XH, Gao LJ, Zhao ZT. Investigation of ultrasound screening efficiency for neural tube defects during pregnancy in rural areas of China. Public Health 2011; 125:639-44. [PMID: 21872896 DOI: 10.1016/j.puhe.2011.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 02/11/2011] [Accepted: 06/10/2011] [Indexed: 10/17/2022]
Abstract
OBJECTIVES To understand the uptake and efficacy of ultrasound screening for neural tube defects (NTDs) during pregnancy, and the outcomes when NTDs were detected in rural areas of China. STUDY DESIGN Prevalence study. METHODS Four hundred and twenty-four women who delivered or gestated babies/fetuses with NTDs were selected at random in 20 counties of two provinces of China from March 2008 to January 2009. The uptake of ultrasound screening, NTD detection rate and termination of pregnancy (TOP) rate were calculated and analyzed. Generalized estimating equations were employed to control for potential confounding factors. RESULTS The uptake of ultrasound screening was 98.8%. Among the study subjects, 361 (85.1%) NTDs were detected and 63 (14.9%) were not detected by prenatal ultrasound screening. The total detection rate was 43.3% (15.6%, 49.6% and 52.2% in the first, second and third trimesters, respectively; P < 0.05). Taking the possibility of NTD detection in the first trimester as 1.0, the possibilities in the second and third trimesters were 10.9 [95% confidence interval (CI) 6.5-18.3] and 25.2 (95% CI 13.3-47.6), respectively. The detection rate at the township health centres (THCs), family planning centres (FPCs), maternal and child care service centres (MCSCs) and hospitals was 24.5%, 29.1%, 53.6% and 78.1%, respectively (P < 0.05). Taking the possibility of NTD detection at THCs as 1.0, the possibilities at FPCs, MCSCs and hospitals were 0.9 (95% CI 0.5-1.6), 3.4 (95% CI 1.9-6.1) and 2.1 (95% CI 1.3-3.4), respectively. Three hundred and fifty-five (98.3%) of the 361 NTDs detected at prenatal ultrasound screening ended in TOP. CONCLUSIONS The uptake of ultrasound screening was satisfactory, but the NTD detection rate was low. Ultrasound screening did not play its full role in the secondary prevention of NTDs in the study areas. Medical institutions in rural areas in China need to improve their ultrasound screening skills in order to increase the efficacy of NTD control.
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Affiliation(s)
- Q-B Lu
- Department of Epidemiology and Health Statistics, School of Public Health, Shandong University, 44 Wenhua Xilu Road, Jinan, Shandong 250012, China
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Quan Y, Wu L, Li J, Xu Z, Gong R. Diagnostic value of bent-lever planes in detecting abnormality of the malleus-incus complex. Otolaryngol Head Neck Surg 2011; 145:654-9. [PMID: 21636844 DOI: 10.1177/0194599811410811] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To retrospectively investigate the diagnostic value of the bent-lever planes in detecting abnormality of the malleus-incus complex. STUDY DESIGN Diagnostic test assessment. SETTING The study was conducted at the Shandong Medical Imaging Research Institute, Shandong University, Jinan, People's Republic of China. SUBJECTS Eighty-five ears in 74 patients with surgically proved abnormality of the malleus-incus complex. MATERIALS AND METHODS The bent-lever planes and direct axial images were reviewed by 2 radiologists. The radiologists assigned a value of abnormality or continuity to different parts of the malleus-incus complex. Differences in categorical data were evaluated with the McNemar test. The sensitivity, specificity, Youden index, and interobserver agreement were calculated. RESULTS There was no significant difference between bent-lever planes and direct axial images in identifying abnormality of the malleus-incus complex. The sensitivity ranged from 71.4% to 97.1%, and specificity ranged from 89.5% to 100.0%. The Youden index ranged from 0.609 to 0.971. The radiologists had almost perfect or substantial agreement in identifying the abnormality of different parts of the malleus-incus complex. CONCLUSION The bent-lever planes do not add additional diagnostic value for experienced observers.
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Affiliation(s)
- Yong Quan
- Shandong Medical Imaging Research Institute, Shandong University, Jinan, People's Republic of China
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Gong R, Lu C, Wu WM, Cheng H, Gu B, Watson D, Jardine PM, Brooks SC, Criddle CS, Kitanidis PK, Luo J. Estimating reaction rate coefficients within a travel-time modeling framework. Ground Water 2011; 49:209-218. [PMID: 20132330 DOI: 10.1111/j.1745-6584.2010.00683.x] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A generalized, efficient, and practical approach based on the travel-time modeling framework is developed to estimate in situ reaction rate coefficients for groundwater remediation in heterogeneous aquifers. The required information for this approach can be obtained by conducting tracer tests with injection of a mixture of conservative and reactive tracers and measurements of both breakthrough curves (BTCs). The conservative BTC is used to infer the travel-time distribution from the injection point to the observation point. For advection-dominant reactive transport with well-mixed reactive species and a constant travel-time distribution, the reactive BTC is obtained by integrating the solutions to advective-reactive transport over the entire travel-time distribution, and then is used in optimization to determine the in situ reaction rate coefficients. By directly working on the conservative and reactive BTCs, this approach avoids costly aquifer characterization and improves the estimation for transport in heterogeneous aquifers which may not be sufficiently described by traditional mechanistic transport models with constant transport parameters. Simplified schemes are proposed for reactive transport with zero-, first-, nth-order, and Michaelis-Menten reactions. The proposed approach is validated by a reactive transport case in a two-dimensional synthetic heterogeneous aquifer and a field-scale bioremediation experiment conducted at Oak Ridge, Tennessee. The field application indicates that ethanol degradation for U(VI)-bioremediation is better approximated by zero-order reaction kinetics than first-order reaction kinetics.
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Affiliation(s)
- R Gong
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355, USA
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Huang R, Zhao Z, Ma X, Li S, Gong R, Kuang A. Targeting of tumor radioiodine therapy by expression of the sodium iodide symporter under control of the survivin promoter. Cancer Gene Ther 2010; 18:144-52. [PMID: 21037556 PMCID: PMC3025317 DOI: 10.1038/cgt.2010.66] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [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] [Indexed: 02/05/2023]
Abstract
To test the feasibility of using the survivin promoter to induce specific expression of sodium/iodide symporter (NIS) in cancer cell lines and tumors for targeted use of radionuclide therapy, a recombinant adenovirus, Ad-SUR-NIS, that expressed the NIS gene under control of the survivin promoter was constructed. Ad-SUR-NIS mediating iodide uptake and cytotoxicity was performed in vitro. Scintigraphic, biodistribution and radioiodine therapy studies were performed in vivo. PC-3 (prostate); HepG2 (hepatoma) and A375 (melanoma) cancer cells all exhibited perchlorate-sensitive iodide uptake after infection with Ad-SUR-NIS, ∼50 times higher than that of negative control Ad-CMV-GFP-infected cells. No significant iodide uptake was observed in normal human dental pulp fibroblast (DPF) cells after infection with Ad-SUR-NIS. Clonogenic assays demonstrated that Ad-SUR-NIS-infected cancer cells were selectively killed by exposure to 131I. Ad-SUR-NIS-infected tumors show significant radioiodine accumulation (13.3±2.85% ID per g at 2 h post-injection), and the effective half-life was 3.1 h. Moreover, infection with Ad-SUR-NIS in combination with 131I suppressed tumor growth. These results indicate that expression of NIS under control of the survivin promoter can likely be used to achieve cancer-specific expression of NIS in many types of cancers. In combination with radioiodine therapy, this strategy is a possible method of cancer gene therapy.
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Affiliation(s)
- R Huang
- Department of Nuclear Medicine, National Key Discipline of Medical Imaging and Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, China
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Gong R, Lu C, Wu WM, Cheng H, Gu B, Watson DB, Criddle CS, Kitanidis PK, Brooks SC, Jardine PM, Luo J. Estimating kinetic mass transfer by resting-period measurements in flow-interruption tracer tests. J Contam Hydrol 2010; 117:37-45. [PMID: 20638152 DOI: 10.1016/j.jconhyd.2010.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 06/03/2010] [Accepted: 06/08/2010] [Indexed: 05/29/2023]
Abstract
Flow-interruption tracer test is an effective approach to identify kinetic mass transfer processes for solute transport in subsurface media. By switching well pumping and resting, one may alter the dominant transport mechanism and generate special concentration patterns for identifying kinetic mass transfer processes. In the present research, we conducted three-phase (i.e., pumping, resting, and pumping) field-scale flow-interruption tracer tests using a conservative tracer bromide in a multiple-well system installed at the US Department of Energy Site, Oak Ridge, TN. A novel modeling approach based on the resting-period measurements was developed to estimate the mass transfer parameters. This approach completely relied on the measured breakthrough curves without requiring detailed aquifer characterization and solving transport equations in nonuniform, transient flow fields. Additional measurements, including hydraulic heads and tracer concentrations in large pumping wells, were taken to justify the assumption that mass transfer processes dominated concentration change during resting periods. The developed approach can be conveniently applied to any linear mass transfer model. Both first-order and multirate mass transfer models were applied to analyze the breakthrough curves at various monitoring wells. The multirate mass transfer model was capable of jointly fitting breakthrough curve behavior, showing the effectiveness and flexibility for incorporating aquifer heterogeneity and scale effects in upscaling effective mass transfer models.
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Affiliation(s)
- R Gong
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0355, USA
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Gong R, Ge Y, Chen S, Liang E, Esparza A, Sabo E, Yango A, Gohh R, Rifai A, Dworkin LD. Glycogen synthase kinase 3beta: a novel marker and modulator of inflammatory injury in chronic renal allograft disease. Am J Transplant 2008; 8:1852-63. [PMID: 18786229 DOI: 10.1111/j.1600-6143.2008.02319.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
One key cell-signaling event central to inflammation in kidney diseases, including chronic renal allograft dysfunction or disease (CRAD), is the activation of NF-kappaB, which controls transcription of numerous proinflammatory mediators. Glycogen synthase kinase (GSK) 3beta is an indispensable element of NF-kappaB activation, however, the exact role of GSK3beta in the pathogenesis of inflammatory kidney diseases like CRAD is uncertain and was examined. Immunohistochemistry staining of GSK3beta was weak in normal kidneys, but was markedly induced in inflamed allograft kidneys, with prominent cytoplasmic staining of tubular cells in areas of inflammation. Net GSK3beta activity is regulated by inhibitory phosphorylation of its serine 9 residue, and this occurred in CRAD. Thus, the magnitude of GSK3beta inactivation was inversely correlated with the degree of injury as assessed by Banff criteria. In vitro in cultured human tubular epithelial cells, GSK3beta overexpression augmented, while GSK3beta silencing diminished proinflammatory cellular responses to TNF-alpha stimulation, including NF-kappaB activation and expression of chemokines MCP-1 and RANTES. These inflammatory responses were obliterated by GSK3beta inhibitors. Collectively, GSK3beta plays an important role in mediating proinflammatory NF-kappaB activation and renal inflammation. Suppression of GSK3beta activity might represent a novel therapeutic strategy to treat CRAD.
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Affiliation(s)
- R Gong
- Division of Kidney Disease and Hypertension, Department of Medicine, Brown University School of Medicine, Providence, RI, USA.
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Sun S, Gong W, Gong R. [Observation of foramina hypoplasia within internal auditory canal fundus with CT virtual endoscopy]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2007; 21:1011-1014. [PMID: 18257275] [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: 05/25/2023]
Abstract
OBJECTIVE To observe normal and abnormal findings of foramina within internal auditory canal (IAC) fundus with Virtual Endoscopy of multisection helical Computed Tomography. METHOD CT scanning of temporal bone was undergone in 25 volunteers (50 ears) in the normal group, in 8 cases (13 ears) with foramina hypoplasia within IAC fundus which were shown on CT and MRI images. CT virtual endoscopy (CTVE) findings were observed in the normal and abnormal groups. The lower threshold value was 900-1200 HU, the upper value was 3,071 HU in CTVE definitions. RESULT The shape and position of foramina within IAC fundus were shown on the CTVE image, 50 foramina within IAC fundus were shown in all normal cases. In abnormal group, 9 ears were shown as IAC fundus disorder and foramina absent, only 1 foramina was shown in 1 ear, 2 foramen in 4 ears, 3 foramen in 2 ears, 4 foramen in 2 ears; Abnormal shape of cochlear nerve foramina was seen in 4 ears. Other malformations were also shown, including IAC malformations in 3 ears and inner ear malformations in 8 ears. CONCLUSION CTVE is useful to show the shape and position of normal foramina and pathological changes in the patients with foramina hypoplasia within IAC fundus.
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Affiliation(s)
- Shanshan Sun
- Shangdong Province Medical Imaging Research Institute, Medical College of Shangdong University, Jinan, 250021, China
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Khan S, Kumar S, Gong R, Miatra A, Beachy P. 530 POSTER Inhibition of hedgehog signaling by cyclopamine prodrug: targeted therapy for advance prostate cancer. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70535-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
Vascular endothelial activation, marked by de novo expression of E-selectin, is an early and essential event in the process of leukocyte extravasation and inflammation. Evidence suggests that hepatocyte growth factor (HGF) ameliorates inflammation in animal models of renal disease, implying that HGF might inhibit specific components of the inflammatory response. This study examined the effect of HGF on endothelial E-selectin expression in acute inflammation induced by tumor necrosis factor (TNF)-α. In vitro, HGF suppressed TNF-α-induced cell surface expression of E-selectin in human umbilical vein endothelial cells (HUVEC) and inhibited E-selectin mediated monocytic adhesion to endothelial monolayers. HGF activated phosphatidylinositol 3-kinase (PI3K)–Akt that in turn inhibited its downstream transducer glycogen synthase kinase (GSK)3. Blockade of the PI3K–Akt pathway with specific inhibitors abrogated HGF induced inhibitory phosphorylation of GSK3 and suppression of E-selectin. In addition, selective inhibition of GSK3 activity by lithium suppressed TNF-α-induced E-selectin expression and monocytic adhesion, reminiscent of the action of HGF. Moreover, ectopic expression of an uninhibitable mutant GSK3β, in which the regulatory serine-9 is replaced by alanine, abolished HGF's suppressive effect on endothelial E-selectin. In vivo, administration of exogenous HGF reduced endothelial expression of E-selectin induced by bolus injection of TNF-α. This was associated with less sequestration of circulating fluorescence-labeled macrophages in the kidney. These findings suggest that HGF ameliorates acute renal inflammation in part by downregulating E-selectin mediated macrophage adhesion to the inflamed endothelium.
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Affiliation(s)
- R Gong
- Department of Medicine, Division of Renal Diseases, Brown University School of Medicine, Providence, Rhode Island 02903, USA.
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Sun J, Zhang H, Gong R, Wang H. [The clinical application of spiral CT virtual endoscopy of middle ear]. Lin Chuang Er Bi Yan Hou Ke Za Zhi 2006; 20:732-4. [PMID: 17058917] [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: 05/12/2023]
Abstract
OBJECTIVE To explore the clinical application of CT virtual endoscopy (CTVE) of ossicular chain in middle ear, and to establish the accurate method of observing ossicular chain and middle ear anatomy. METHOD Volume scanning with spiral CT unit was performed in forty normal cases without illness of ear. Endoscopic 3D processing was carried out on a separate workstation equipped with a flying through program. From three isolated points(A, B and C), ear drum and ossicles were observed with CTVE method. The status of auditory ossicles connection were focused. RESULT In CTVE via A, B and C points, the indication rates of the malleus, the indus, the drum cape, the canalis facialis horizontal section, and the prominence of horizontal semicircular canals were prosperously 100%. The indication rates of round window and the fenestra ovalis were 90%, 93%, 98% via A, B and C points respectively. And the indication rates of complete demonstration of ear ossicles were 100%, 95%, 93%, respectively. CONCLUSION With appropriate approach, CTVE has advantage of showing ear ossicles and their connections, which is a good supplement of routine CT.
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Affiliation(s)
- Jie Sun
- Department of Otolaryngology, First Affiliated Hospital of Xinjiang Medical University, Urumchi, 830054, China
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Cooper MK, Wassif CA, Krakowiak PA, Taipale J, Gong R, Kelley RI, Porter FD, Beachy PA. Erratum: A defective response to Hedgehog signaling in disorders of cholesterol biosynthesis. Nat Genet 2003. [DOI: 10.1038/ng0503-113a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Shan Z, Wang L, Cai D, Gong R, Zhu Z, Yu F. Impact of fipronil on crustacean aquatic organisms in a paddy field-fishpond ecosystem. Bull Environ Contam Toxicol 2003; 70:746-752. [PMID: 12677386 DOI: 10.1007/s00128-003-0046-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- Z Shan
- Department of Environmental Science, Nanjing University, Nanjing 210093, People's Republic of China
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Liu Z, Yang J, Chen Z, Gong R, Li L. Gene polymorphism in IL-1 receptor antagonist affects its production by monocytes in IgA nephropathy and Henoch-Schonlein nephritis. Chin Med J (Engl) 2001; 114:1313-6. [PMID: 11793861] [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: 02/23/2023] Open
Abstract
OBJECTIVE To define the functional significance of IL-1 receptor antagonist (IL-1ra) gene polymorphism and to investigate, the production of IL-1ra by monocytes from individuals with different genotypes of IL-1. METHODS The genotype of IL-1ra was detected by polymerase chain reaction (PCR). Peripheral monocytes obtained from patients with immunoglobin A nephropathy (IgAN), Henoch-Schonlein purpura nephritis (HSPN) and normal subjects were matched in sex and age between the IL1RN-2 allele carriers and non-carriers. The secretion of IL-1ra, IL-1 alpha and IL-1 beta in the supernatant of GM-CSF (10 ng/ml) treated and untreated monocytes were measured by ELISA. RESULTS The secretion of IL-1ra by monocytes stimulated with GM-CSF was significantly higher in the IL1RN-2 allele non-carriers than those of carriers both in IgAN (21.55 +/- 3.08 vs 13.85 +/- 2.24 ng/ml, P < 0.001) and HSPN (23.72 +/- 6.68 vs 12.67 +/- 2.24 ng/ml, P < 0.01) as well as in normal controls (20.29 +/- 1.45 vs 10.51 +/- 2.3 ng/ml, P < 0.001). All showed no significant differences in monocyte secretion of IL-1 alpha and IL-1 beta by GM-CSF stimulation between the IL1RN-2 allele carriers and non-carriers. CONCLUSIONS These results indicate that a functional correlation of the IL1RN-2 allele and IL-1ra production is present in patients with IgAN and HSPN. This gene polymorphism control of IL-1ra production may contribute to the variety of clinical responses to inflammatory stimulation in individuals with different genotype of IL-1ra.
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Affiliation(s)
- Z Liu
- Research Institute of Nephrology, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China.
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Gong R, Wu L. Computerized tomography pleurography: a new method for detecting minor pleural lesion. Chin Med J (Engl) 2001; 114:937-40. [PMID: 11780386] [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: 02/23/2023] Open
Abstract
OBJECTIVES To evaluate the ability of CT pleurography (CTP) in detecting minor pleural lesions in patients with pleural effusion and to assess its value in distinguishing malignant from benign pleural lesions. METHODS A prospective study of 50 patients with pleural effusion was conducted using conventional CT and CTP. CT scan was run after injecting an appropriate amount of contrast medium into the pleural cavity. RESULTS In 24 patients, all lesions detected by conventional CT were demonstrated by CTP. In 13 of 24 patients, CT pleurography detected additional lesions. In 20 of 26 patients with negative findings on conventional CT, CTP was capable of demonstrating the presence of pleural lesions. The sensitivity, specificity and accuracy of detecting pleural lesions were 25%, 100% and 30% for conventional CT, 86%, 100% and 87% for CTP, respectively. CONCLUSION CTP is superior to conventional CT in detecting and for the differential diagnosis benign and malignant pleural lesions.
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Affiliation(s)
- R Gong
- Shandong Medical Imaging Research Institute, Jinan 250021, China
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Fang D, Liu B, Gong R. [Establishment and implication of an assay for high density lipoprotein phospholipids in human serum]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:471-3. [PMID: 12536598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To develop an assay for high density lipoprotein phospholipids in human serum based on ascorbutate reduction method. METHODS HDLs were separated from apolipoprotein B-containing lipoproteins by precipitation of phosphotungstic acid and magnesium chloride. Phospholipids of HDL were extracted by ethanol/ether, and dried. After the dried phospholipids were digested by sulphuric acid and perchloric acid, the color was developed by adding ammonium molybdate in ascorbutate. The levels of high density lipoprotein phospholipids (HDL-PL) were measured by spectrophotometry at 700 nm. RESULTS The coefficients of variation (CV) were 3.6% and 3.7% within two batches of assays. Recovery of isolated HDL-PL added to serum ranged from 98% to 107%, averagely 103%. The established assay for human serum HDL-PL was used to measure the serum levels of 30 hypercholesterolemic subjects, 30 hypertriglyceridemic subjects, 30 combined hyperlipidemic subjects, and 30 normolipidemic subjects. The hypertriglyceridemic subjects had lower HDL-PL level than normolipidemic subjects and hypercholesterolemic subjects (The P values are 0.005 and 0.007 respectively). CONCLUSION A simple and specific method for assay of HDL-phos-pholipids in human serum has been developed. The above data collected by the use of this method demonstrate the closer relationship between human HDL-PL metabolism and triglyceride metabolism, suggesting that lower HDL-PL level might serve as an index in the assay for type IV hyperlipidemia.
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Affiliation(s)
- D Fang
- Apolipoprotein Research Unit, School of Basic Medical Sciences, WCUMS, Chengdu 610041, China
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Xin Y, Yu L, Chen Z, Zheng L, Fu Q, Jiang J, Zhang P, Gong R, Zhao S. Cloning, expression patterns, and chromosome localization of three human and two mouse homologues of GABA(A) receptor-associated protein. Genomics 2001; 74:408-13. [PMID: 11414770 DOI: 10.1006/geno.2001.6555] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Type A receptors of gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter, contain alpha, beta, delta, gamma, and rho subunits. The gamma subunit has four subtypes: gamma1, gamma2, gamma3, andgamma4. GABA(A) receptor-associated protein (GABARAP) was previously demonstrated to act as a linker protein between microtubules and the gamma2 subunit of GABA(A) receptors. However, no other linker proteins have been identified as mediating the linkage of microtubules and the remaining subunits of GABA(A) receptors. In this study we identified three human paralogues (GABARAPL1, GABARAPL2, and GABARAPL3) and two mouse orthologues (Gabarapl1 and Gabarapl2) of human GABARAP, all of which encoded 117 amino acids, as does Gabarapl. The expression patterns of GABARAPL1, GABARAPL2, and GABARAP in 16 adult tissues showed that they were expressed ubiquitously. The expression levels of GABARAPL1 as a 2.3-kb transcript were very high in brain, heart, peripheral blood leukocytes, liver, kidney, placenta, and skeletal muscle, very low in thymus and small intestine, and moderate in other tissues tested. The unique 1.35-kb transcript of GABARAPL2 was expressed at high levels in heart, brain, testis, prostate, ovary, spleen, and skeletal muscle, at very low levels in lung, thymus, and small intestine, and moderately in other tissues tested. For GABARAP, a 1.3-kb transcript was abundantly expressed in all tested tissues with small variation. The expression patterns of Gabarapl1 and Gabarapl2 were similar to those of their counterparts in human. In addition, GABARAPL1 was localized to human chromosome 12p12.3 and GABARAPL2 to 16q22.3-q24.1 by RH mapping, while GABARAP and GABARAPL3 were found to be localized at chromosomes 17p13.2 and 15q25.1, respectively, by searching the related databases. Sequence comparison of the cDNAs and their corresponding genomic sequences shows that GABARAP, GABARAPL1, and GABARAPL2 are composed of four exons each, while GABARAPL3 is distributed only at one exon.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Amino Acid Sequence
- Animals
- Apoptosis Regulatory Proteins
- Base Sequence
- Blotting, Northern
- Chromosome Mapping
- Chromosomes, Human, Pair 12/genetics
- Chromosomes, Human, Pair 15/genetics
- Chromosomes, Human, Pair 16/genetics
- Cloning, Molecular
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Female
- Gene Expression
- Humans
- Male
- Mice
- Microtubule-Associated Proteins/genetics
- Molecular Sequence Data
- Protein Isoforms/genetics
- RNA/genetics
- RNA/metabolism
- Radiation Hybrid Mapping
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Tissue Distribution
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Affiliation(s)
- Y Xin
- State Key Laboratory of Genetic Engineering, School of Life Science, Fudan University, Shanghai, 200433, People's Republic of China
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Gong R, Liu Z, Li L. Mannose-binding lectin gene polymorphism associated with the patterns of glomerular immune deposition in IgA nephropathy. Scand J Urol Nephrol 2001; 35:228-32. [PMID: 11487077 DOI: 10.1080/003655901750292015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To elucidate the genetic background underlying the diversity of mesangial immune deposition in IgA nephropathy (IgAN), we investigated the distribution of mannose-binding lectin (MBL) gene codon 54 polymorphism and serum MBL levels in IgAN patients. METHODS Seventy-seven IgAN patients with glomerular IgA and C3 deposits (Group A) and 70 with glomerular IgA, IgG, IgM, C3 and Clq deposits (Group AGM) were included in the present study. Control group consisted of 140 normal adults. MBL genotypes were investigated by polymerase chain reaction and restriction fragment length polymorphism. Serum MBL levels with different genotypes were also assayed in some subjects. RESULTS The variant allele (GAC) was markedly associated with Group AGM (OR = 1.95, 95% C.I.: 1.06-3.58). In both Group A and Group AGM, more patients carrying the variant allele had episodes of upper respiratory or gastrointestinal infections prior to onset or exacerbation of IgAN than wild homozygotes (GGC/GGC). In addition, a significant difference in serum MBL level was also observed between wild homozygotes and heterozygotes (GGC/GAC) (GGC/GGC > GGC/GAC) (p<0.0001) in all groups, while there was no difference for subjects with the same genotypes among the three groups (p > 0.05). Serum MBL levels of the rare variant homozygotes approached zero. CONCLUSIONS Our findings provide evidence that the host defense molecule, MBL, may be involved in the formation of the diversity of glomerular immune deposition in IgAN. Genetic deficiency of MBL may partially account for abundant immune deposits in some IgAN patients.
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Affiliation(s)
- R Gong
- Department of Medicine, Nanjing University School of Medicine, People's Republic of China.
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Gong R, Liu Z, Chen Z, Liu D, Li L. [Mannose-binding protein gene polymorphism influences the patterns of glomerular immune deposition in IgA nephropathy]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2001; 18:83-7. [PMID: 11295122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
OBJECTIVE To investigate the relationship between mannose-binding protein(MBP) gene codon 54 (GGC/GAC) polymorphism and the patterns of glomerular immune deposition in IgA nephropathy (IgAN) and explore its functional significance. METHODS IgAN patients were divided into two groups according to the pattern of glomerular immune deposition. Group A included 77 patients with glomerular IgA and C3 deposits. Group AGM consisted of 70 patients with glomerular IgA, IgG, IgM, C3 and Clq deposits. One hundred and forty healthy adults were used as normal controls. MBP genotypes were investigated by PCR-RFLP. Serum MBP levels of some subjects with different genotypes were also assayed by ELISA simultaneously. RESULTS The genotype frequency of GAC heterozygotes was significantly higher in group AGM than in group A (41.4% vs. 19.5%, P<0.01) or normal subjects (41.4% vs. 26.4%, P<0.05), while no difference was found in the distribution of MBP genotypes between group A and normal subjects. The allele frequency of GAC mutation was also higher in group AGM than in group A (0.236 vs. 0.136, P<0.05) or normal subjects (0.236 vs. 0.146, P<0.05). The variant allele (GAC) was markedly associated with group AGM (OR=1.95, 95%CI: 1.06-3.58). In both group A and group AGM, more patients carrying the variant allele had episodes of upper respiratory or gastrointestinal infections prior to the onset or exacerbation of IgAN than wild homozygotes. In addition, a significant difference in serum MBP level was also observed among the three genotypes (GGC/GGC>GGC/GAC>GAC/GAC) (P<0.0001) for all groups, while there were no differences in serum MBP levels for subjects with the same genotypes among the three groups (P>0.05). CONCLUSION The above findings provide evidence that IgAN patients with abundant immune deposits in glomeruli show a higher frequency of MBP gene variation which is associated with a high frequency of infection and a low serum MBP level. This genetic deficiency may lead to an impaired first-line defense and a less effective clearance of immune complex than those without this mutation and thereafter accelerate glomerular immune deposition during the process of disease.
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Affiliation(s)
- R Gong
- Research Institute of Nephrology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu 210002 P. R. China
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Gong R, Yu L, Zhang H, Tu Q, Zhao Y, Yang J, Xu Y, Zhao S. Assignment of human GADD45G to chromosome 9q22.1-->q22.3 by radiation hybrid mapping. Cytogenet Genome Res 2000; 88:95-6. [PMID: 10773677 DOI: 10.1159/000015496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- R Gong
- Institute of Genetics, Fudan University, Shanghai, China
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Cui Y, Yu L, Gong R, Zhang M, Fan Y, Yue P, Zhao S. Cloning and tissue expressional characterization of a full-length cDNA encoding human neuronal protein P17.3. Biochem Genet 1999; 37:175-85. [PMID: 10544803 DOI: 10.1023/a:1018734605214] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A full-length cDNA of 595 bp was isolated from a human fetal brain cDNA library. It contains an open reading frame encoding 153 amino acids, with an 18-bp 5'UTR and a 118-bp 3'UTR in which there is an atypical polyadenylation signal (ATTAAA). The calculated molecular weight of the deduced protein is 17.3 kU. The predicted isoelectric point is 4.89. On account of its high homology to mouse neuronal protein NP15.6 (81.2% identity), the deduced protein was named neuronal protein 17.3 (NP17.3). When its secondary structure was examined by the GGBSM program of PCGENE software, it was found that 32.6 and 15.0% of its amino acids are involved in forming alpha-helices and beta-sheets, respectively. Examined with the PESTFIND program, a typical PEST region found in rapidly degraded proteins was found between residue 48 and residue 68.
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Affiliation(s)
- Y Cui
- State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, P.R. China
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Fang D, Gong R, O K. [Isolation of isoforms of apolipoprotein CIII from human serum by chromatofocusing]. Hua Xi Yi Ke Da Xue Xue Bao 1999; 30:111-3. [PMID: 12205909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
This study aimed to isolate isoforms of apolipoprotein (apo) C III from human serum. 24-hour fasting serum from normal and hyperlipidemic subjects was pooled and subjected to ultracentrifugation at plasma density for 20 hours. Very low density lipoprotein (VLDL) was collected at density of d < 1.006 g/ml, and it was delipidated by ethanol and ether. The delipidated apo-VLDL was dissolved in a solution containing 7.2 mol/L urea and 20 mmol/L dithiothreitol. The insoluble apo B was removed by centrifugation. The soluble apo-VLDL was applied to PBE94 column, and eluted with elution buffer containing polybuffer 74 and 8 mol/L urea (1:8, pH4.0). After pooled, the eluted peaks of apolipoproteins were applied to column chromatography of hydroxylapatite to remove the polybuffer. The purified isoforms of apoC III and the purified apo C I, C II and E, were characterized by isoelectrofocusing and west blot. The results showed that the purified apoC III1, C III2, and C II were pure.
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Affiliation(s)
- D Fang
- Department of Biochemistry, School of Basic Medical Sciences, WCUMS, Chengdu 610041
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