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Zuo W, Yang Y, Wei L, Dong L, Shu X. One stone, two birds: severe left ventricular outflow tract obstruction and mitral valve prolapse treated with one single ValveClamp. Eur Heart J Cardiovasc Imaging 2024:jeae046. [PMID: 38420887 DOI: 10.1093/ehjci/jeae046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2024] Open
Affiliation(s)
- Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Medical Imaging, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Cardiovascular Diseases, 180 Fenglin Road, Shanghai 200032, China
| | - Ye Yang
- Shanghai Institute of Cardiovascular Diseases, 180 Fenglin Road, Shanghai 200032, China
- Department of Cardiovascular Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Lai Wei
- Shanghai Institute of Cardiovascular Diseases, 180 Fenglin Road, Shanghai 200032, China
- Department of Cardiovascular Surgery, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Medical Imaging, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Cardiovascular Diseases, 180 Fenglin Road, Shanghai 200032, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Medical Imaging, 180 Fenglin Road, Shanghai 200032, China
- Shanghai Institute of Cardiovascular Diseases, 180 Fenglin Road, Shanghai 200032, China
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Liu Y, Liu L, Chen B, Wu Y, Zhao R, Zuo W, Li Q, Meng F, Kong D, Pan C, Dong L, Shu X. In vitro and clinical validation of different correction algorithms for the two-dimensional proximal isovelocity surface area method in a low-velocity flow field for quantifying tricuspid regurgitation. Quant Imaging Med Surg 2024; 14:160-178. [PMID: 38223056 PMCID: PMC10784015 DOI: 10.21037/qims-22-1311] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 10/11/2023] [Indexed: 01/16/2024]
Abstract
Background The 2-dimensional proximal isovelocity surface area (2D PISA) method underestimates tricuspid regurgitation (TR) severity. Previously proposed correction algorithms should be further scrutinized. Methods Two correction algorithms were tested. One approach involves dividing the 2D PISA effective regurgitant orifice area by a constant of 0.7 (EROA0.7). Another approach involves multiplying the unadjusted EROA by Vorifice/(Vorifice - Valiasing), where Vorifice denotes the TR jet velocity, and Valiasing represents the color aliasing velocity (EROAVo-Va). In vitro validation was performed on a commercially available multifunctional valve tester with different size orifices and peak pressure gradients. A true EROA was derived through the regurgitant volume (RVol) calculated from the tester. For clinical validation, RVol was calculated as the difference between the overall stroke volume and the forward stroke volume of the right ventricle. Volumetric EROA was derived by dividing the RVol by the TR velocity-time integral (VTI). The vena contracta area (VCA) was obtained through direct planimetry with 3D echocardiography. The mean of volumetric EROA and VCA served as the reference in clinical validation. Results Excellent correlation between the calculated EROAs and the true EROA was observed in vitro (r=0.98, r=0.97, and r=0.98 for uncorrected EROA, EROAVo-Va, and EROA0.7, respectively; all P values <0.0001). EROAVo-Va underestimated the true EROA and averaged 33% (P=0.3163), while EROA0.7 overestimated the true EROA and averaged 8% (P=0.0032). Clinically, these methods consistently exhibited a notable underestimation that varied with the reference EROA. This systematic underestimation was mitigated by both algorithms when either the VCA (biases of 19.6, 15.1, and 11.8 mm2 for uncorrected EROA, EROAVo-Va, and EROA0.7, respectively) or the volumetric EROA (biases of 10.1, 5.6, and 2.3 mm2 for uncorrected EROA, EROAVo-Va, and EROA0.7, respectively) served as the reference. Their ability to distinguish severe TR was similar, with area under the curve values of 0.905, 0.903, and 0.893 for uncorrected EROA, EROAVo-Va, and EROA0.7, respectively. No statistically significant differences were observed for diagnostic accuracy (all P values >0.05). Conclusions Using a correction factor of 0.7 in quantifying TR provides similar accuracy when compared to other techniques. This represents a valuable clinical tool for quickly correcting the underestimation of the 2D PISA method in TR. This simple method may increase the frequency of applying the correction and earlier recognition of patients with severe TR.
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Affiliation(s)
- Yu Liu
- Shanghai Institute of Medical Imaging, Shanghai, China
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li Liu
- National Institutes for Food and Drug Control, Beijing, China
| | - Beiqi Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Yuanfeng Wu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Rui Zhao
- Department of Medicine, John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, USA
| | - Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Quan Li
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Fangmin Meng
- Shanghai Institute of Medical Imaging, Shanghai, China
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
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Wu Y, Meng F, Liu Y, Zuo W, Li Q, Chen B, Kong D, Wang Y, Chen H, Pan C, Dong L, Shu X. Echocardiographic parameters recommended for assessing the severity of tricuspid regurgitation: concordance and discordance. Quant Imaging Med Surg 2023; 13:5089-5099. [PMID: 37581071 PMCID: PMC10423354 DOI: 10.21037/qims-23-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 05/12/2023] [Indexed: 08/16/2023]
Abstract
Background Current guidelines recommend integrating several echocardiographic indices to evaluate the severity of tricuspid regurgitation (TR). Discordance of indices, including qualitative and quantitative methods, commonly exists in practice. The discordance among these parameters has not yet been fully elucidated. Methods A total of 127 patients with recognizable TR jets without pulmonary regurgitation or intracardiac shunt were prospectively enrolled. We evaluated 8 parameters by 2-dimensional (2D) echocardiography: proximal iso-velocity surface area (PISA)-derived regurgitant volume (RVol), PISA-derived effective regurgitant orifice area (EROA), PISA radius, vena contracta width (VCW), color Doppler jet area, tricuspid valve annular diameter, inferior vena cava (IVC) diameter, and peak E wave. According to current guidelines, each echocardiographic parameter was determined to represent either severe or non-severe TR. A concordance score was calculated as the number of concordant parameters divided by 8, with a higher score reflecting better concordance. Data were further categorized into 3 subgroups: complete concordance (0 discordant parameters), high concordance (1-2 discordant parameters), and low concordance (3-4 discordant parameters). Results The mean concordance score was 81%±17% for the entire cohort. There were 48 (38%) patients with complete concordance, including 6 patients with severe TR. In contrast, the low concordance group (n=43, 34%) mostly comprised severe TR patients (36 patients). When considering only EROA, RVol, and VCW, concordance improved, with 98 patients (77%) in complete agreement. Conclusions Concordance seems limited when using echocardiographic parameters to assess TR severity. Applying only EROA, RVol, and VCW results in better concordance, as recommended by the current guidelines.
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Affiliation(s)
- Yuanfeng Wu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Fangmin Meng
- Shanghai Institute of Medical Imaging, Shanghai, China
| | - Yu Liu
- Shanghai Institute of Medical Imaging, Shanghai, China
| | - Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Quan Li
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Beiqi Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Yongshi Wang
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Haiyan Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
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Liang L, Duan Y, Xiong Y, Zuo W, Ye F, Zhao S. Synergistic cocatalytic effect of MoO3 and creatinine on Cu–Fenton reactions for efficient decomposition of H2O2. Materials Today Chemistry 2022; 24:100805. [DOI: 10.1016/j.mtchem.2022.100805] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
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Zuo W, Sun R, Zhang X, Qu Y, Ji Z, Su Y, Zhang R, Ma G. Optical coherence tomography-defined vulnerable plaque characteristics in relation to functional severity of coronary stenoses stratified by quantitative flow ratio. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2086] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The functional severity and morphological features of epicardial lesions are both related to plaque vulnerability and adverse coronary events. However, their relationship remains controversial, especially in patients with non-ST-segment elevation acute coronary syndrome (NSTE-ACS).
Purpose
This study aimed to examine whether quantitative flow ratio (QFR), an angiography-based computation of fractional flow reserve, was associated with optical coherence tomography (OCT)-defined vulnerable plaques such as thin-cap fibroatheromas (TCFAs) in a board spectrum of population, including patients presenting stable angina and NSTE-ACS.
Methods
We identified patients who underwent OCT examinations from 2 prospective cohorts and then assessed interrogated vessels with QFR. Lesions were divided into tertiles: QFR-T1 (QFR <0.85)<qfr),>, QFR-T2 (0.85 to 0.93) and QFR-T3 (QFR >0.93).
Results
This post-hoc analysis included 83 lesions from 79 patients (mean age: 61.5±9.8 years, males: 58%). Patients with NSTE-ACS accounted for the majority of the population (67%). The median % diameter stenosis and median QFR value were 42% (36 to 49%) and 0.88 (0.83 to 0.95), respectively. The prevalence of OCT-TCFA was significantly higher in QFR-T1 (50%) than in QFR-T2 (14%) and QFR-T3 (19%) (p=0.003 and 0.018, respectively). Overall significant differences were observed among tertiles in maximum lipid arc, thinnest fibrous cap thickness (FCT), and minimal lumen area (MLA) (p=0.017, 0.040, and <0.001, respectively). The Spearman's correlation analysis showed that QFR was significantly related to MLA (ρ = 0.537, p<0.001), % area stenosis (ρ = –0.512, p<0.001), maximum lipid arc (ρ = –0.360, p=0.002), lipid length (ρ = –0.242, p=0.038), lipid index (ρ = –0.333, p=0.004), and thinnest FCT (ρ = 0.315, p=0.006). In the multivariable analysis, QFR ≤0.80 remained as a significant determinant of TCFAs regardless of the presence of NSTE-ACS and the level of low-density lipoprotein cholesterol (adjusted odds ratio = 4.387, 95% confidence interval: 1.297 to 14.839, p=0.017). In addition, QFR demonstrated moderate predictive ability for OCT-TCFA (area under the curve = 0.72, 95% confidence interval: 0.58 to 0.86, p=0.003) with the best cutoff of ≤0.86 (sensitivity: 65%; specificity: 73%; negative predictive value: 85%; accuracy: 71%).
Conclusions
Lower QFR was related to OCT-TCFA and other vulnerable plaque characteristics in angiographically mild-to-intermediate stable lesions and culprit lesions from NSTE-ACS. The QFR might be a useful tool for ruling out high-risk, rupture-prone plaques without using any pressure wires or vasodilators.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): The Jiangsu Provincial Key Research and Development Program Flow diagram of patient selectionOCT findings according to QFR tertiles
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Affiliation(s)
- W Zuo
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - R Sun
- Yancheng No. 1 People's Hospital, Department of Cardiology, Yancheng, China
| | - X Zhang
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - Y Qu
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - Z Ji
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - Y Su
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - R Zhang
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
| | - G Ma
- Zhongda Hospital, Southeast University, Department of Cardiology, Nanjing, China
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Luan Y, Li C, Zuo W, Hu H, Gao R, Zhang B, Tong X, Lu C, Dai F. Gene mapping reveals the association between tyrosine protein kinase Abl1 and the silk yield of Bombyx mori. Anim Genet 2021; 52:342-350. [PMID: 33683721 DOI: 10.1111/age.13052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2021] [Indexed: 11/29/2022]
Abstract
The Z chromosome of the silkworm contains a major gene that influences silk yield. This major locus on chromosome Z accounts for 35.10% of the phenotypic variance. The location and identification of the gene have been a focus of silkworm genetics research. Unfortunately, identification of this gene has been difficult. We used extreme phenotype subpopulations and selected from a backcross population, BC1 M, which was obtained using the high-yield strain 872B and the low-yield strain IS-Dazao as parents, for mapping the gene on the chromosome Z. The candidate region was narrowed down to 134 kb at the tip of the chromosome. BmAbl1 in this region correlated with silk gland development by spatiotemporal expression analysis. This gene was differentially expressed in the posterior silk glands of the high- and low-yield strains. In BmAbl1, an insertion-deletion (indel) within the 10th exonic region and an SNP within the 6th intronic region were detected and shown to be associated with cocoon shell weight in 84 Bombyx mori strains with different yields. Nucleotide diversity analysis of BmAbl1 and its 50 kb flanking regions indicated that BmAbl1 has experienced strong artificial selection during silkworm domestication. This study is the first to identify the genes controlling silk yield in the major QTL of the Z chromosome using forward genetics.
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Affiliation(s)
- Y Luan
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - C Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - W Zuo
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - H Hu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - R Gao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - B Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - X Tong
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - C Lu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - F Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
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Yang ZH, Kubota Y, Corsi A, Yoshida K, Sun XX, Li JG, Kimura M, Michel N, Ogata K, Yuan CX, Yuan Q, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Gibelin J, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Marqués FM, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Orr NA, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Roussé JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Xu FR, Yasuda J, Yoneda K, Zenihiro J, Zhou SG, Zuo W, Uesaka T. Quasifree Neutron Knockout Reaction Reveals a Small s-Orbital Component in the Borromean Nucleus ^{17}B. Phys Rev Lett 2021; 126:082501. [PMID: 33709737 DOI: 10.1103/physrevlett.126.082501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus ^{17}B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 1s_{1/2} and 0d_{5/2} orbitals, and a surprisingly small percentage of 9(2)% was determined for 1s_{1/2}. Our finding of such a small 1s_{1/2} component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in ^{17}B. The present work gives the smallest s- or p-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of s or p orbitals is not a prerequisite for the occurrence of a neutron halo.
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Affiliation(s)
- Z H Yang
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - X-X Sun
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J G Li
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - M Kimura
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
- Nuclear Reaction Data Centre, Hokkaido University, Sapporo 060-0810, Japan
| | - N Michel
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - K Ogata
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China
| | - Q Yuan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - G Authelet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - F Flavigny
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - J-M Gheller
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - A Giganon
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
- Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), P.O. Box 51, H-4001 Debrecen, Hungary
| | - S Koyama
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Reichert
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - J-Y Roussé
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - T Sumikama
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - F R Xu
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S-G Zhou
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - W Zuo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Shi YJ, Zuo W, Zhang YY, Sun M, Qian YZ. [Identification of a novel mutation of the PAX9 gene and clinical treatment in a nonsyndromic oligodontia family]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:207-209. [PMID: 33557508 DOI: 10.3760/cma.j.cn112144-20200427-00235] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Y J Shi
- Center of Stomatology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - W Zuo
- Center of Stomatology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Y Y Zhang
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - M Sun
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y Z Qian
- Center of Stomatology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
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Liu Y, Chen B, Zhang Y, Zuo W, Li Q, Jin L, Kong D, Pan C, Dong L, Shu X, Ge J. Sources of Variability in Vena Contracta Area Measurement for Tricuspid Regurgitation Severity Grading: Comparison of Technical Settings and Vendors. J Am Soc Echocardiogr 2020; 34:270-278.e1. [PMID: 33166630 DOI: 10.1016/j.echo.2020.10.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 10/22/2020] [Accepted: 10/30/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Previous studies found different cutoffs of vena contracta area (VCA) to define severe tricuspid regurgitation (TR). The aim of this study was to investigate the factors associated with such variability by comparing technical variables and vendors. METHODS Sixty-nine patients with scheduled tricuspid surgery were included in this prospective study. For each patient, TR data sets were obtained on three-dimensional color Doppler transthoracic echocardiography on at least two of three systems: GE Vivid E95 (n = 39), Siemens SC2000 Prime (n = 64), and Philips EPIQ 7C (n = 60). VCA was measured using default settings or with color baseline shifted on all three platforms and with minimal color gain (10%-20%) on the GE platform. RESULTS Color gain reduction and baseline shift caused significant change sin VCA measurement (-46% and 10%, respectively). Intervendor comparison exhibited wide limits of agreement (narrowest range, -74% to 167%), with either default or optimized settings. Different technical settings, platforms, and reference methods all produced different VCA cutoffs for severe TR. CONCLUSIONS VCA measurement in TR is sensitive to technical factors and demonstrates intervendor variability. Technical variables in VCA measurement should be reported in detail to allow comparison among research studies. The same vendor and settings should be used for longitudinal analysis of TR VCA in the same patient in multivendor echocardiography laboratories.
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Affiliation(s)
- Yu Liu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Beiqi Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Yue Zhang
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Quan Li
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Ling Jin
- Shanghai Medical College, Fudan University, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Cardiovascular Diseases, Shanghai, China
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Chen B, Liu Y, Zuo W, Li Q, Kong D, Pan C, Dong L, Shu X, Ge J. Three-dimensional transthoracic echocardiographic evaluation of tricuspid regurgitation severity using proximal isovelocity surface area: comparison with volumetric method. Cardiovasc Ultrasound 2020; 18:41. [PMID: 33050922 PMCID: PMC7557073 DOI: 10.1186/s12947-020-00225-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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/05/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The quantification of tricuspid regurgitation(TR) using three-dimensional(3D) proximal isovelocity surface area (PISA) derived effective regurgitant orifice area (EROA) is feasible in functional TR. The aim of our study was to explore the diagnostic accuracy and utility of 3D PISA EROA in a larger population of different etiologies. METHODS One hundred and seven patients with confirmed TR underwent 2D and 3D transthoracic echocardiography (TTE). 3D PISA EROA was calculated and EROA derived from 3D regurgitant volume (Rvol) was used as the reference. RESULTS 3D PISA EROA showed better correlation in primary TR than in functional TR(r = 0.897, P < 0.01). 3D PISA EROA differentiated severe TR with comparable accuracy in patients with primary and functional etiology (Z-value 16.506 vs 21.202), but with different cut-offs (0.49cm2 vs. 0.41 cm2). The chi-square value for incorporated clinical symptoms, positive echocardiographic results and 3D PISA EROA to grade severe TR was higher than only included clinical symptoms or incorporated clinical symptoms and positive echocardiographic results (chi-square value 137.233, P < 0.01). CONCLUSION TR quantification using 3D PISA EROA is feasible and accurate under different etiologies. It has incremental diagnostic value for evaluating severe TR.
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Affiliation(s)
- Beiqi Chen
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.,Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Yu Liu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.,Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.,Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Quan Li
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China
| | - Dehong Kong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.,Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China. .,Shanghai Institute of Medical Imaging, Shanghai, China. .,Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China. .,Shanghai Institute of Medical Imaging, Shanghai, China. .,Shanghai Institute of Cardiovascular Diseases, Shanghai, China.
| | - Junbo Ge
- Department of Echocardiography, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Institute of Medical Imaging, Shanghai, China.,Shanghai Institute of Cardiovascular Diseases, Shanghai, China
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Li Q, Liu Y, Zuo W, Chen H, Zhao W, Dong L, Pan C, Shu X. Mechanisms, features, and significance of diastolic mitral regurgitation: a case series. Eur Heart J Case Rep 2020; 4:1-8. [PMID: 33426438 PMCID: PMC7780436 DOI: 10.1093/ehjcr/ytaa203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/24/2020] [Accepted: 06/11/2020] [Indexed: 11/24/2022]
Abstract
Background Diastolic mitral regurgitation (DMR) is a type of functional mitral regurgitation. Its occurrence in the diastolic phase of cardiac cycle renders DMR an easily ignored entity. Confusing it with systolic mitral regurgitation occasionally happens. The reversal of left atrioventricular pressure gradient during diastole and the incomplete closure of mitral valve are the essential conditions for DMR. Diastolic mitral regurgitation develops under various situations, where the mechanisms of diastolic reversal of left atrioventricular pressure gradient differ. Case summary Patient 1 was a 50-year-old man diagnosed with 2:1 second-degree atrioventricular block (AVB). Patient 2 was a 70-year-old man diagnosed with first-degree AVB. Patient 3 was a 66-year-old man diagnosed with atrial fibrillation with long intermission and occasional atrial flutter with unequal conduction. Patient 4 was a 54-year-old woman diagnosed with dilated cardiomyopathy with complete left bundle branch block. Patient 5 was a 36-year-old man diagnosed with severe acute aortic regurgitation secondary to subacute bacterial endocarditis. Discussion Although the degree of DMR is relatively mild, its appearance generally prompts further clinical considerations. The appreciation of DMR has an incremental value for diagnosing and evaluating the underlying cardiovascular disease.
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Affiliation(s)
- Quan Li
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Yu Liu
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Wuxu Zuo
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Haiyan Chen
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Weipeng Zhao
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Lili Dong
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Cuizhen Pan
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Xianhong Shu
- Department of Echocardiography, Zhongshan Hospital, Shanghai Institute of Cardiovascular Diseases, Shanghai Institute of Medical Imaging, Fudan University, 180 Fenglin Road, Shanghai 200032, China
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Ren Y, Jiang Y, Zuo W, Xu X, Jin X, Ma D, Shao Z. Abstract P2-08-33: A novel seven-gene signature predicts prognosis in early-stage triple-negative breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose:
Chemotherapy remains the only systemic treatment option for patients with triple-negative breast cancer (TNBC). However, due to the heterogeneity of TNBC, not all patients benefit from chemotherapy, especially those with early-stage disease. In order to improve prognostic assessment and reduce unnecessary adjuvant systemic therapy in these patients, we have developed a novel seven-gene signature.
Experimental Design:
With the ComBat method, we integrated the results from 150 transcriptome microarrays samples and 246 RNA-seq samples of early-stage TNBC patients, and identified mRNAs associated with recurrence-free survival (RFS) using Lasso-Cox model, We further analyzed these TNBC samples and compared them with 60 paired normal breast tissues (40 samples from RNA-seq and 20 samples from microarrays) to identify tumor-specific mRNAs. Twenty-one overlapped mRNAs of the RFS-associated mRNAs and the tumor-specific mRNAs are selected as candidate mRNAs. An additional 371 samples of frozen primary tumors were then collected from early-stage TNBC patients (mean follow-up of 45 months) and randomly divided into two sets: a training set (n = 186) and a validation (n = 185) set. Expression level of candidate mRNAs in these samples were measured using RT-qPCR assays, and a seven-gene signature was built through all subset regression in the training set. The prognostic and predictive accuracy of our signature was tested in the validation set and other public databases (GSE5327, GSE2034 and METABRIC).
Results:
Twenty-one candidate mRNAs were identified in early-stage TNBC patients, from which we developed a novel seven-gene signature (recurrence risk score [mRNA signature] = 1.108*TMEM101 - 0.213*KRT5 - 0.315*ACAN - 0.464*LCA5 + 0.446*RPP40 - 0.373*LAGE3 - 0.257*CDKL2). Patients in the training set were classified into high- or low-risk group based on our seven-gene signature and an optimum cut-off score derived from x-tile. The patients in high-risk group were more likely to suffer from recurrence (HR, 2.718; 95% confidence interval [CI], 1.928–3.726, P= 0.001), and a time-dependent receiver operating curve showed that the seven-gene mRNA signature had a better prognostic value than the clinicopathologic risk factors in both training set and validation set. The prognostic and predictive accuracy of the signature was also validated in the METABRIC and two other public GEO databases (GSE5327 and GSE2034). The time-dependent receiver operating curve showed that this signature had an area under the curve (AUC) of 0.742 (95% CI, 0.705-0.773) in METABRIC, 0.716 (95% CI, 0.682-0.739) and 0.723 (95% CI, 0.683-0.756) in GSE5327 and GSE2034 respectively.
Conclusion:
In this study, we developed a novel seven-gene signature which can provide additional prognostic information and may guidance in identifying early-stage TNBC patients eligible for adjuvant therapy or reduction of chemotherapy. To our knowledge, this is the first study investigating the prognostic potential of mRNA signature in early-stage triple-negative breast cancer. Our novel signature may provide an opportunity for de-escalating treatment in early-stage TNBC patients in the future.
Citation Format: Ren Y, Jiang Y, Zuo W, Xu X, Jin X, Ma D, Shao Z. A novel seven-gene signature predicts prognosis in early-stage triple-negative breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-33.
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Affiliation(s)
- Y Ren
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - Y Jiang
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - W Zuo
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - X Xu
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - X Jin
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - D Ma
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - Z Shao
- Fudan University Shanghai Cancer Center, Shanghai, China
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Liu C, He X, Wu X, Wang Z, Zuo W, Hu G. Clinicopathological and prognostic significance of GPx2 protein expression in nasopharyngeal carcinoma. Cancer Biomark 2018; 19:335-340. [PMID: 28453466 DOI: 10.3233/cbm-160542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE This study was designed to evaluate the relation between GPx2 (glutathione peroxidase 2) expressions and clinicopathological features as well as prognosis of patients with nasopharyngeal carcinoma (NPC). METHODS A total of 89 cases of NPC were investigated to examine the immunohistochemical expression of GPx2. Fourteen pairs of NPC and the control samples were analyzed respectively by qRT-PCR and Western blot. The correlations of GPx2 expressions with the clinicopathologic features and the prognosis of NPC patients were also analyzed. RESULTS The expression of GPx2 in NPC tissues was elevated immunohistochemically when compared with normal nasopharyngeal tissues (P< 0.05). The mRNA expression of GPx2 in carcinoma tissues was highly elevated compared with the control tissues (P< 0.05). GPx2 protein in carcinoma tissues was also over expressed than in control tissues (P< 0.05). Also GPx2 expression was significantly higher in the late clinical stage (P= 0.02). While there was no significant association between GPx2 expression and patient age, sex, T-stage, N-stage and the metastasis. CONCLUSIONS GPx2 may play an important role in the development of nasopharyngeal carcinoma. Furthermore, GPx2 may serve as a prognostic biomarker for NPC patient.
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Yan G, Zhang R, Zuo W, Wang R, Ling Y, Kobayashi Y. The safety and efficacy of Chinese formula Salviae Miltiorrhizae and Ligustrazine hydrochloride solution injection in the acute ischemic stroke patients. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- G Yan
- Guizhou Baite Pharmaceutical Corporation, Guizhou, China
| | - R Zhang
- Guizhou Baite Pharmaceutical Corporation, Guizhou, China
| | - W Zuo
- Guizhou Baite Pharmaceutical Corporation, Guizhou, China
| | - R Wang
- Guizhou Baite Pharmaceutical Corporation, Guizhou, China
- Zhejiang CONBA Pharmaceutical & Drug Research Development Corporation, Hangzhou, China
| | - Y Ling
- Medical Corporation Soujikai, Osaka, Japan
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Zuo W, Yang PF, Chen J, Zhang Z, Chen NH. Drp-1, a potential therapeutic target for brain ischaemic stroke. Br J Pharmacol 2016; 173:1665-77. [PMID: 26915692 DOI: 10.1111/bph.13468] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 01/19/2016] [Accepted: 01/26/2016] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE The resistance of CA3 neurons to ischaemia and the ischaemic tolerance conferred by ischaemic preconditioning (IPC) are two well-established endogenous neuroprotective mechanisms. Elucidating the molecules involved may help us find new therapeutic targets. Thus, we determined whether dynamin-related protein 1 (Drp-1) is involved in these processes. EXPERIMENTAL APPROACH In vivo, we subjected rats to either 10 min severe global ischaemia using a four-vessel occlusion (4-VO) model or 2 min IPC before the onset of 4-VO. In vitro, we performed oxygen glucose deprivation (OGD) studies in rat hippocampal neurons. Drp-1 was silenced or inhibited by siRNA or pharmacological inhibitor Mdivi1. To assess whether mitochondrial Drp-1 alters neuronal vulnerability to ischaemic injury, various approaches were used including western blot, immunohistochemistry, immunofluorescence staining and electron microscopy. Hippocampal function was assessed using an open-field test. KEY RESULTS Mitochondrial dynamin-related protein 1 (mtDrp-1) was selectively induced by ischaemia in hippocampal CA3 neurons. In hippocampal CA1 neurons, mtDrp-1 was not affected by ischaemia but significantly up-regulated by IPC. Suppression of Drp-1 increased the vulnerability of cells to OGD and global ischaemia. Inhibition of Drp-1 in vivo resulted in loss of acquisition and encoding of spatial information, and also prevented ischaemia-induced mitophagy in CA3. Thus mitochondrial-mediated injury was amplified and resistance to ischaemic injury lost. CONCLUSIONS AND IMPLICATIONS Our findings that Drp-1 increases the resistance of neurons of hippocampal CA3 affected by global ischaemia and contributes to the tolerance conferred by IPC highlight Drp-1 as a potential therapeutic target for brain ischaemic stroke.
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Affiliation(s)
- W Zuo
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical College Hospital, and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - P F Yang
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical College Hospital, and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Chen
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical College Hospital, and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Zhang
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical College Hospital, and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - N H Chen
- Department of Pharmacology, Institute of Materia Medica, Peking Union Medical College Hospital, and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Wang J, Wang F, Liu Y, Xu J, Lin H, Jia B, Zuo W, Jiang Y, Hu L, Lin F. Multiple Linear Regression and Artificial Neural Network to Predict Blood Glucose in Overweight Patients. Exp Clin Endocrinol Diabetes 2016; 124:34-8. [PMID: 26797861 DOI: 10.1055/s-0035-1565175] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Overweight individuals are at higher risk for developing type II diabetes than the general population. We conducted this study to analyze the correlation between blood glucose and biochemical parameters, and developed a blood glucose prediction model tailored to overweight patients. METHODS A total of 346 overweight Chinese people patients ages 18-81 years were involved in this study. Their levels of fasting glucose (fs-GLU), blood lipids, and hepatic and renal functions were measured and analyzed by multiple linear regression (MLR). Based the MLR results, we developed a back propagation artificial neural network (BP-ANN) model by selecting tansig as the transfer function of the hidden layers nodes, and purelin for the output layer nodes, with training goal of 0.5×10(-5). RESULTS There was significant correlation between fs-GLU with age, BMI, and blood biochemical indexes (P<0.05). The results of MLR analysis indicated that age, fasting alanine transaminase (fs-ALT), blood urea nitrogen (fs-BUN), total protein (fs-TP), uric acid (fs-BUN), and BMI are 6 independent variables related to fs-GLU. Based on these parameters, the BP-ANN model was performed well and reached high prediction accuracy when training 1 000 epoch (R=0.9987). CONCLUSIONS The level of fs-GLU was predictable using the proposed BP-ANN model based on 6 related parameters (age, fs-ALT, fs-BUN, fs-TP, fs-UA and BMI) in overweight patients.
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Affiliation(s)
- J Wang
- Department of Infection and Liver Diseases, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - F Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China
| | - Y Liu
- Wenzhou Medical University, Wenzhou, China
| | - J Xu
- The Affiliated Wenling Hospital of Wenzhou Medial University, Wenling, China
| | - H Lin
- Wenzhou Medical University, Wenzhou, China
| | - B Jia
- Inner Mongolia Medical University, Hohhot, China
| | - W Zuo
- Ningbo Fourth Hospital, Xiangshan, China
| | - Y Jiang
- Ningbo Fourth Hospital, Xiangshan, China
| | - L Hu
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - F Lin
- Laboratory of Internal Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
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Li C, Zuo W, Tong X, Hu H, Qiao L, Song J, Xiong G, Gao R, Dai F, Lu C. A composite method for mapping quantitative trait loci without interference of female achiasmatic and gender effects in silkworm,Bombyx mori. Anim Genet 2015; 46:426-32. [DOI: 10.1111/age.12311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2015] [Indexed: 11/27/2022]
Affiliation(s)
- C. Li
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - W. Zuo
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - X. Tong
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - H. Hu
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - L. Qiao
- Institute of Entomology and Molecular Biology; College of Life Sciences; Chongqing Normal University; Chongqing 401331 China
| | - J. Song
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - G. Xiong
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - R. Gao
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - F. Dai
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - C. Lu
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
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Abstract
Oxidative stress is a condition of imbalance between reactive oxygen species (ROS) formation and antioxidant capacity as a result of dysfunction of the antioxidant system. ROS can be served as a second messenger at low or moderate concentration, while excessive amount of ROS under oxidative stress condition would destroy macromolecules like proteins, DNA, and lipids, finally leading to cell apoptosis or necrosis. Changes in these macromolecules are involved in various pathological changes and progression of diseases, especially neurodegenerative diseases. Neurodegenerative diseases are morphologically featured by progressive neuronal cell loss, accompanied with inclusions formed by protein aggregates in neurons or glial cells. Neurons have always received much more attention than glial cells in neurodegenerative diseases. Actually, glial cells might play a key role in the functioning of neurons and cellular survival through an antioxidant way. Additionally, neurons can modulate the activities of glia either. Herein, the main purposes of this review are to mention the connection between Huntington's disease (HD) and oxidative stress, to summarize the characteristics and functions of glial cells in HD, to state the cross talk between neurons and glial cells, and to emphasize the conclusive role of activation of Keap1-Nrf2-ARE pathway in glial cells against oxidative stress in HD.
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Affiliation(s)
- Y Gao
- Department of Pharmacology, State Key of Laboratory Bioactive Substances and Functions of Natural Medicines, Institute of MateriaMedica, Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing , P. R. China
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Reyes-Bahamonde J, Raimann JG, Canaud B, Etter M, Kooman JP, Levin NW, Marcelli D, Marelli C, Power A, Van Der Sande FM, Thijssen S, Usvyat LA, Wang Y, Kotanko P, Blank PR, Szucs TD, Gibertoni D, Torroni S, Mandreoli M, Rucci P, Fantini MP, Santoro A, Van Der Veer SN, Nistor I, Bernaert P, Bolignano D, Brown EA, Covic A, Farrington K, Kooman J, Macias J, Mooney A, Van Munster BC, Van Den Noortgate N, Topinkova E, Wirnsberger G, Jager KJ, Van Biesen W, Stubnova V, Os I, Grundtvig M, Waldum B, Wu HY, Peng YS, Wu MS, Chu TS, Chien KL, Hung KY, Wu KD, Carrero JJ, Huang X, Sui X, Ruiz JR, Hirth V, Ortega FB, Blair SN, Coppolino G, Bolignano D, Rivoli L, Presta P, Mazza G, Fuiano G, Marx S, Petrilla A, Hengst N, Lee WC, Ruggajo P, Skrunes R, Svarstad E, Skjaerven R, Reisaether AV, Vikse BE, Fujii N, Hamano T, Akagi S, Watanabe T, Imai E, Nitta K, Akizawa T, Matsuo S, Makino H, Scalzotto E, Corradi V, Nalesso F, Zaglia T, Neri M, Martino F, Zanella M, Brendolan A, Mongillo M, Ronco C, Occelli F, Genin M, Deram A, Glowacki F, Cuny D, Mansurova I, Alchinbayev M, Malikh MA, Song S, Shin MJ, Rhee H, Yang BY, Kim I, Seong EY, Lee DW, Lee SB, Kwak IS, Isnard Bagnis C, Speyer E, Beauger D, Caille Y, Baudelot C, Mercier S, Jacquelinet C, Gentile SM, Briancon S, Yu TM, Li CY, Krivoshiev S, Borissova AM, Shinkov A, Svinarov D, Vlachov J, Koteva A, Dakovska L, Mihaylov G, Popov A, Polner K, Mucsi I, Braunitzer H, Kiss A, Nadasdi Z, Haris A, Zdrojewski L, Zdrojewski T, Rutkowski B, Minami S, Hesaka A, Yamaguchi S, Iwahashi E, Sakai S, Fujimoto T, Sasaki K, Fujita Y, Yokoyama K, Dey V, Farrah T, Traynor J, Spalding E, Robertson S, Geddes CC, Mann MC, Hobbs A, Hemmelgarn BR, Roberts D, Ahmed SB, Rabi D, Elewa U, Fernandez B, Alegre ER, Mahillo I, Egido J, Ortiz A, Marx S, Pomerantz D, Vietri J, Zewinger S, Speer T, Kleber ME, Scharnagl H, Woitas R, Pfahler K, Seiler S, Heine GH, Lepper PM, Marz W, Silbernagel G, Fliser D, Caldararu CD, Gliga ML, Tarta ID, Szanto A, Carlan O, Dogaru GA, Battaglia Y, Del Prete MA, De Gregorio MG, Errichiello C, Gisonni P, Russo L, Scognamiglio B, Storari A, Russo D, Kuma A, Serino R, Miyamoto T, Tamura M, Otsuji Y, Kung LF, Naito S, Iimori S, Okado T, Rai T, Uchida S, Sasaki S, Kang YU, Kim HY, Choi JS, Kim CS, Bae EH, Ma SK, Kim SW, Muthuppalaniappan VM, Byrne C, Sheaff M, Rajakariar R, Blunden M, Delmas Y, Loirat C, Muus P, Legendre C, Douglas K, Hourmant M, Herthelius M, Trivelli A, Goodship T, Bedrosian CL, Licht C, Marks A, Black C, Clark L, Prescott G, Robertson L, Simpson W, Simpson W, Fluck N, Wang SL, Hsu YH, Pai HC, Chang YM, Liu WH, Hsu CC, Shvetsov M, Nagaytseva S, Gerasimov A, Shalyagin Y, Ivanova E, Shilov E, Zhang Y, Zuo W, Marx S, Manthena S, Newmark J, Zdrojewski L, Rutkowski M, Zdrojewski T, Bandosz P, Gaciong Z, Solnica B, Rutkowski B, Wyrzykowski B, Ensergueix G, Karras A, Levi C, Chauvet S, Trivin C, Ficheux M, Augusto JF, Boudet R, Chambaraud T, Boudou-Rouquette P, Tubiana-Mathieu N, Aldigier JC, Jacquot C, Essig M, Thervet E, Oh YJ, Lee CS, Malho Guedes A, Silva AP, Goncalves C, Sampaio S, Morgado E, Santos V, Bernardo I, Leao Neves P, Onuigbo M, Agbasi N. CKD GENERAL AND CLINICAL EPIDEMIOLOGY 1. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu146] [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: 01/24/2023] Open
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Dong JM, Zuo W, Yin P, Gu JZ. Comment on "New mass limit for white dwarfs: super-Chandrasekhar type ia supernova as a new standard candle". Phys Rev Lett 2014; 112:039001. [PMID: 24484168 DOI: 10.1103/physrevlett.112.039001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Indexed: 06/03/2023]
Affiliation(s)
- J M Dong
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - W Zuo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - P Yin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J Z Gu
- China Institute of Atomic Energy, P. O. Box 275(10), Beijing 102413, China
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Zuo W, Lough AJ, Li YF, Morris RH. Amine(imine)diphosphine Iron Catalysts for Asymmetric Transfer Hydrogenation of Ketones and Imines. Science 2013; 342:1080-3. [DOI: 10.1126/science.1244466] [Citation(s) in RCA: 399] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Horikawa Y, Tsuchiya N, Yuasa K, Narita S, Saito M, Takayama K, Nara T, Tsuruta H, Obara T, Numakura K, Satoh S, Habuchi T, Hu X, Guo J, Lin Z, Sun L, Xu Z, Cang C, Wang G, Kanda T, Sakamoto K, Matsuki A, Ohashi R, Hirota S, Fujimori Y, Matsuda Y, Yajima K, Kosugi S, Hatakeyama K, Kitahara K, Watanabe M, Nakazono S, Wada N, Kakizaki H, Li J, Gong FJ, Sun PN, Shen L, Li Q, Li N, Qiu M, Liu J, Yi C, Luo D, Li Z, Gou H, Yang Y, Cao D, Shen Y, Wang X, Xu F, Bi F, Li Q, Zhang X, Li N, Wei W, Luo HY, Wang ZQ, Wang FH, Qiu MZ, Teng KY, Ruan DY, He YJ, Li YH, Xu RH, Matsusaka S, Mizunuma N, Suenaga M, Shinozaki E, Mishima Y, Terui Y, Hatake K, Nara E, Kodaira M, Mishima Y, Yokoyama M, Saotome T, Terui Y, Takahashi S, Hatake K, Nishimura N, Nakano K, Kodaira M, Ueda K, Yamada S, Mishima Y, Yokoyama M, Saotome T, Takahashi S, Terui Y, Hatake K, Nozawa M, Mochida Y, Nishigaki K, Nagae S, Uemura H, Oh SY, Jeong CY, Hong SC, Lee WS, Kim HG, Lee GW, Hwang IG, Jang JS, Kwon HC, Kang JH, Ozaka M, Ogura M, Matsusaka S, Shinozaki E, Suenaga M, Chin K, Mizunuma N, Hatake K, Pua PF, Ganzon D, Chan V, Sailaja K, Vishnupriya S, Raghunadharao D, Markandeya G, Reddy PRK, Reddanna P, Praveen D, Sakamoto K, Kanda T, Matsuki A, Takano T, Hanyu T, Yajima K, Kosugi S, Hirota S, Hatakeyama K, Shigekawa T, Ijichi N, Takayama S, Tsuda H, Ikeda K, Horie K, Osaki A, Saeki T, Inoue S, Subhashini J, Rajesh B, Rajesh I, Ravindran P, Takagi K, Chin K, Oba M, Kuboki Y, Ichimura T, Oto M, Kawazoe Y, Watanabe T, Ozaka M, Ogura M, Suenaga M, Shinozaki E, Matsusaka S, Mizunuma N, Hatake K, Ueda K, Saotome T, Yamada S, Nishimura N, Nara E, Nakano K, Kodaira M, Katsube A, Mishima Y, Terui Y, Yokoyama M, Takahashi S, Hatake K, Yao X, Yang Q, Li C, Diao L, Chen X, Yu Z, Zuo W, Wang Y, He Y, Zhang X, Cai S, Wang Z, Xu J, Zhan W, Zhang YF, Misumi M, Takeuchi H, Nakamiya N, Shigekawa T, Matsuura K, Fujiuchi N, Osaki A, Saeki T. CLINICAL OUTCOMES. Jpn J Clin Oncol 2011. [DOI: 10.1093/jjco/hyq254] [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: 11/14/2022] Open
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Mao H, Zhang L, Yang Y, Zuo W, Bi Y, Gao W, Deng B, Sun J, Shao Q, Qu X. New Insights of CTLA-4 into Its Biological Function in Breast Cancer. Curr Cancer Drug Targets 2010; 10:728-36. [DOI: 10.2174/156800910793605811] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2009] [Accepted: 05/18/2010] [Indexed: 11/22/2022]
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Zhang L, Ma H, Greyner HJ, Zuo W, Mummert ME. Inhibition of cell proliferation by CD44: Akt is inactivated and EGR-1 is down-regulated. Cell Prolif 2010; 43:385-95. [PMID: 20590664 PMCID: PMC6496187 DOI: 10.1111/j.1365-2184.2010.00689.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2009] [Accepted: 11/30/2009] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE CD44 is a transmembrane glycoprotein and can facilitate signal transduction by serving as a platform for molecular recruitment and assembly. A number of studies have suggested that CD44 can either positively or negatively regulate cell proliferation. The purpose of this study was to investigate how CD44 can inhibit cell proliferation. MATERIALS AND METHODS We engineered E6.1 Jurkat cells to express CD44. Importantly, these cells lack endogenous CD44 expression. Molecular pathways involved with cell proliferation were studied using RT(2)-PCR array, siRNA, Western blotting and by employing pharmacological inhibitors of ERK1/2, p38 and the PI3K/Akt pathways. RESULTS We found that CD44 expression significantly inhibited cell proliferation and down-regulated EGR-1 expression and EGR-1 targets cyclin D1 and cyclin D2. Transfection of control E6.1 Jurkat cells with EGR-1 siRNA also inhibited cell proliferation, confirming its role. Disruption of the PI3K/Akt pathway with pharmacological inhibitors reduced both EGR-1 expression and cell proliferation, recapitulating the properties of CD44 expressing cells. Akt was hypophosphorylated in cells expressing CD44 showing its potential role in negatively regulating Akt activation. Strikingly, constitutively active Akt rescued the proliferation defect showing requirement for active Akt, in our system. CONCLUSION Our results suggest a novel pathway by which CD44 inactivates Akt, down-regulates EGR-1 expression and inhibits cell proliferation.
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Affiliation(s)
- L.‐S. Zhang
- Department of Psychiatry and Behavioral Health, University of North Texas Health Science Center, Fort Worth, TX, USA
- Mental Sciences Institute, University of North Texas Health Science Center, Fort Worth, TX, USA
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - H.‐W. Ma
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - H. J. Greyner
- Department of Psychiatry and Behavioral Health, University of North Texas Health Science Center, Fort Worth, TX, USA
- Mental Sciences Institute, University of North Texas Health Science Center, Fort Worth, TX, USA
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - W. Zuo
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - M. E. Mummert
- Department of Psychiatry and Behavioral Health, University of North Texas Health Science Center, Fort Worth, TX, USA
- Mental Sciences Institute, University of North Texas Health Science Center, Fort Worth, TX, USA
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Abstract
UNLABELLED Real-time flow simulation is crucial for emergency management in buildings, such as fire and accidental or intentional release of chemical/biological agents (contaminants). The simulation results can then be used to impose proper measures to minimize casualties. Computational fluid dynamics (CFD) is accurate, but too time-consuming. Nodal models are fast, but not informative. To obtain a quick and informative solution, this study proposes an intermediate approach between nodal models and CFD by introducing a fast fluid dynamics (FFD) method. This investigation used the FFD methods with and without turbulence treatments to study systematically four basic flows in buildings, and compared the numerical results with the corresponding CFD results and the data from the literature. The results show that, on one hand, the FFD can offer much richer flow information than nodal models, but less accurate results than CFD. On the other hand, the FFD is 50 times faster than the CFD. The results also show that the FFD with the laminar assumption has the best overall performance as regards both accuracy and speed. It is possible to conduct faster-than-real-time flow simulations with detailed flow information by using the FFD method. PRACTICAL IMPLICATIONS The paper introduces a fast fluid dynamics (FFD) method, which can simulate airflow and contaminant dispersion in buildings with real-time or faster-than-real-time speed and provide informative solutions. As an intermediate approach between nodal models and the computational fluid dynamics (CFD), the FFD can be a very useful tool for emergency management in case of fire and accidental or intentional release of chemical or biological agents in a building or around the buildings. The FFD can also be used as a preliminary test tool for quick assessment of indoor airflows before a detailed CFD analysis.
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Affiliation(s)
- W Zuo
- National Air Transportation Center of Excellence for Research in the Intermodal Transport , School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-2088, USA
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Chen M, Du J, Jiang W, Zuo W, Wang F, Li M, Wu Z, Chan H, Zhou W. Functional expression of cystic fibrosis transmembrane conductance regulator in rat oviduct epithelium. Acta Biochim Biophys Sin (Shanghai) 2008. [DOI: 10.1093/abbs/40.10.864] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chen X, Zuo Y, Zuo W. [Observation on the clinical symptoms and sporocyst excretion in human volunteers experimentally infected with Sarcocystis hominis]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 17:25-7. [PMID: 12563811] [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
AIM To investigate the excretion of sporocysts and clinical manifestations in humans experimentally infected of Sarcocystis hominis. METHODS Three volunteers were infected by eating raw beef containing cysts of S. hominis. One ingested about 1,567 cysts in skeletal muscles of a naturally infected cattle; two volunteers each ingested about 14,740 cysts from an experimentally infected water buffalo meat. Fecal examination by zinc sulfate flotation method was conducted daily since d4 postinfection (pi). RESULTS Free sporocysts and oocysts were found in their faeces from d11-40, d12-23, d10-30 pi, and peaked at d18, d14, d14. All of them presented clinical symptoms such as abdominal pain, distension, watery diarrhea and eosinophilia 1 wk approximately 4 wk pi and were spontaneously cured within 29 days pi without taking any medicine. CONCLUSION All the experimentally infected persons had gastrointestinal symptoms and passed sporocysts and oocysts in faeces 10-12 days after infection and persisted for 11-29 days.
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Affiliation(s)
- X Chen
- Biology Department of Yunnan University, Kunming 650091
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Hoffmann B, Zuo W, Liu A, Morris NR. The LIS1-related protein NUDF of Aspergillus nidulans and its interaction partner NUDE bind directly to specific subunits of dynein and dynactin and to alpha- and gamma-tubulin. J Biol Chem 2001; 276:38877-84. [PMID: 11509576 DOI: 10.1074/jbc.m106610200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The NUDF protein of Aspergillus nidulans, which is required for nuclear migration through the fungal mycelium, closely resembles the LIS1 protein required for migration of neurons to the cerebral cortex in humans. Genetic experiments suggested that NUDF influences nuclear migration by affecting cytoplasmic dynein. NUDF interacts with another protein, NUDE, which also affects nuclear migration in A. nidulans. Interactions among LIS1, NUDE, dynein, and gamma-tubulin have been demonstrated in animal cells. In this paper we examine the interactions of the A. nidulans NUDF and NUDE proteins with components of dynein, dynactin, and with alpha- and gamma-tubulin. We show that NUDF binds directly to alpha- and gamma-tubulin and to the first P-loop of the cytoplasmic dynein heavy chain, whereas NUDE binds directly to alpha- and gamma-tubulin, to NUDK (actin-related protein 1), and to the NUDG dynein LC8 light chain. The data suggest a direct role for NUDF in regulation of the dynein heavy chain and an effect on other dynein/dynactin subunits via NUDE. The interactions between NUDE, NUDF, and gamma-tubulin suggest that this protein may also be involved in the regulation of dynein function. Additive interactions between NUDE and dynein and dynactin subunits suggest that NUDE acts as a scaffolding factor between components.
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Affiliation(s)
- B Hoffmann
- Department of Pharmacology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA
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Han G, Liu B, Zhang J, Zuo W, Morris NR, Xiang X. The Aspergillus cytoplasmic dynein heavy chain and NUDF localize to microtubule ends and affect microtubule dynamics. Curr Biol 2001; 11:719-24. [PMID: 11369237 DOI: 10.1016/s0960-9822(01)00200-7] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cytoplasmic dynein is a multisubunit, minus end-directed microtubule motor that uses dynactin as an accessory complex to perform various in vivo functions including vesicle transport, spindle assembly, and nuclear distribution [1]. We previously showed that in the filamentous fungus Aspergillus nidulans, a GFP-tagged cytoplasmic dynein heavy chain (NUDA) forms comet-like structures that exhibited microtubule-dependent movement toward and back from the hyphal tip [2]. Here we demonstrate that another protein in the NUDA pathway, NUDF, which is homologous to the human LIS1 protein involved in brain development [3, 4], also exhibits such dynamic behavior. Both NUDA and NUDF are located at the ends of microtubules, and this observation suggests that the observed dynamic behavior is due to their association with the dynamic microtubule ends. To address whether NUDA and NUDF play a role in regulating microtubule dynamics in vivo, we constructed a GFP-labeled alpha-tubulin strain and used it to compare microtubule dynamics in vivo in wild-type A. nidulans versus temperature-sensitive loss-of-function mutants of nudA and nudF. The mutants showed a lower frequency of microtubule catastrophe, a lower rate of shrinkage during catastrophe, and a lower frequency of rescue. The microtubules in the mutant cells also paused longer at the hyphal tip than wild-type microtubules. These results indicate that cytoplasmic dynein and the LIS1 homolog NUDF affect microtubule dynamics in vivo.
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Affiliation(s)
- G Han
- Department of Biochemistry and Molecular Biology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
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Zuo W, Wang Y, Li M. [Clinical significance of sentinel lymph node biopsy for breast cancer]. Zhonghua Zhong Liu Za Zhi 2001; 23:247-50. [PMID: 11783099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To study the significance of sentinel lymph node(SLN) biopsy (SLNB) in determining the extent of axillary dessection for cN0 breast cancer patients. METHODS In 96 patients with cN0 breast cancer, sentinel lymph nodes identified by patent blue-V or methylene blue staining were excised for biopsy. patients then received operations for breast cancer including axillary dessection. RESULTS SLN was identified in 91 patients. The total number of SLN identified was one in 54 cases(59.3%), 2 in 23 cases(25.3%) and > or = 3 in 14 cases(15.4%). In 24 of the 91 patients, SLN was positive for metastasis. In 13 the 24 patients, only SLN provided evidence of lymph node metastasis. The sensitivity of SLN biopsy was 87.5%, the specificity was 100%. It had 100% positive predictability and 95.7% negative predictability of lymph node metastasis. The accuracy rate of intraoperative imprint cytology examination of SLN was 92.1%, with a false negative rate of 10.0% and a false positive rate of 7.1%. The accuracy rate of frozen-section examination of SLN was 98.7% during operation, with a false negative rate of 5.0% but without false positive result. Immunohistochemical assay did not help demonstrate metastasis in SLN negative on routine pathologic examination. CONCLUSION The SLN status can generally be a representation of axillary metastasis, SLNB is useful to determine the extent of axillary dessection in cN0 breast cancer patients. Methylene blue is as effective as patent blue-V in the identification of SLN.
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Affiliation(s)
- W Zuo
- Shandong Cancer Hospital and Institute, Jinan 250117, China
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31
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Liu JY, Guo WJ, Wang SJ, Zuo W, Zhao Q, Yang YF. Nuclear stopping as a probe for in-medium nucleon-nucleon cross sections in intermediate energy heavy ion collisions. Phys Rev Lett 2001; 86:975-978. [PMID: 11177988 DOI: 10.1103/physrevlett.86.975] [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] [Subscribe] [Scholar Register] [Received: 04/17/2000] [Revised: 09/27/2000] [Indexed: 05/23/2023]
Abstract
Using an isospin-dependent quantum molecular dynamics, nuclear stopping in intermediate heavy ion collisions has been studied. The calculation has been done for colliding systems with different neutron-proton ratios in beam energy ranging from 15 MeV/ u to 150 MeV/ u. It is found that, in the energy region from above Fermi energy to 150 MeV/ u, nuclear stopping is very sensitive to the isospin dependence of in-medium nucleon-nucleon cross section, but insensitive to symmetry potential. From this investigation, we propose that nuclear stopping can be used as a new probe to extract the information on the isospin dependence of in-medium nucleon-nucleon cross section in intermediate energy heavy ion collisions.
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Affiliation(s)
- J Y Liu
- Center of Theoretrical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou, People's Republic of China
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32
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Yan W, Zuo W, Lin Q. [Evaluation of autonomic nervous function with heart rate variability and cardiovascular reflex tests in type II diabetes mellitus patients]. Zhonghua Nei Ke Za Zhi 2000; 39:670-3. [PMID: 11374173] [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: 04/16/2023]
Abstract
OBJECTIVE To evaluate autonomic nervous function in simple diabetes mellitus patients, diabetic nephropathy(DN) patients and diabetes mellitus patients with accompanying coronary heart disease(DC) by studying heart rate variability (HRV) and cardiovascular reflex tests. METHODS 57 type II diabetes mellitus patients were divided into 3 groups: 29 of simple diabetes mellitus, 17 of DC, and 11 of DN. The three groups were matched to 15 healthy controls for age, HRV and three cardiovascular reflex tests were performed in all the patients. RESULTS The overall frequency of abnormal autonomic nervous function in 57 diabetes mellitus patients was 45.6%. All the diabetes mellitus groups especially the DN group were lower than a normal control group in time domain indexes and nonlinear dynamics indexes. As the patterns of R-R interval Poincare plots were concerned, the control group was mainly of comet-shaped pattern, the simple diabetes mellitus group was mainly of torpedo-shaped pattern, while the DN group and the DC group had more irregular patterns. CONCLUSION Decrease in HRV is an early clinical marker for evolving diabetic autonomic neuropathy. This method may be helpful for evaluating organ dysfunction in diabetes mellitus patients.
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Affiliation(s)
- W Yan
- Department of Cardiology, Peking Uion Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union College, Beijing 100730, China
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33
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Zuo W. [Progress in the prevention and control of whooping cough]. Zhonghua Liu Xing Bing Xue Za Zhi 2000; 21:309-10. [PMID: 15468509] [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] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
- W Zuo
- Department of Epidemiology, Beijing Institute of Biological Products, Ministry of Health, Beijing 100024, China
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34
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Dai L, Shen H, Yu Y, Wang Y, Zuo W, Kan X. [Endometrial nuclear progesterone receptors in infertile women]. Zhonghua Bing Li Xue Za Zhi 2000; 29:184-7. [PMID: 11866909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the endometrial nuclear progesterone receptors (PgR) as well as its relationship with retarded endometrial development (RED) in infertile women. METHODS The progesterone profile, endometrial nuclear progesterone receptors (PgR) and endometrial biopsies were studied by using (125)I radioimmunoassay and immunohistochemical technique in 53 infertile women during median luteal phase. When the endometrial dating lagged 2 days behind the dating as determined by luteinizing hormone (LH) surge, diagnosis of luteal phase defect (LPD) was made. According to progesterone profile and endometrial morphology, the patients were divided into three groups: normal, luteal phase defect (LPD) and pseudocorpus luteum insufficiency (PLI). RESULTS During median luteal phase, RED were found in all of 24 cases with LPD and PLI, but PgR contents were different in them. Mean progesterone profile of 9 cases of PLI cycles was normal (60.2 nmol/L) but the endometrial nuclear PgR appeared to be prominently lower than in normal cycles during the median luteal phase (P < 0.01). Average progesterone level of 15 cases of LPD cycles were significantly lower (29.9 nmol/L) but endometrial nuclear PgR were similar to normal group (P > 0.05). CONCLUSION Retarded endometrial development may have different causes. Measurement of endometrial nuclear PgR is of assistance in differential diagnosis.
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Affiliation(s)
- L Dai
- Department of Pathology, People's Hospital, Beijing Medical University, Beijing 100044, China
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35
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Xiang X, Han G, Winkelmann DA, Zuo W, Morris NR. Dynamics of cytoplasmic dynein in living cells and the effect of a mutation in the dynactin complex actin-related protein Arp1. Curr Biol 2000; 10:603-6. [PMID: 10837229 DOI: 10.1016/s0960-9822(00)00488-7] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Cytoplasmic dynein is a minus-end-directed microtubule motor that participates in multiple cellular activities such as organelle transport and mitotic spindle assembly [1]. To study the dynamic behavior of cytoplasmic dynein in the filamentous fungus Aspergillus nidulans, we replaced the gene for the cytoplasmic dynein heavy chain, nudA, with a gene encoding a green fluorescent protein (GFP)-tagged chimera, GFP-nudA. The GFP-NUDA fusion protein is fully functional in vivo: strains expressing only the GFP-tagged nudA grow as well as wild-type strains. Fluorescence microscopy showed GFP-NUDA to be in comet-like structures that moved in the hyphae toward the growing tip. Retrograde movement of some GFP-NUDA comets after they arrived at the tip was also observed. These dynamics of GFP-NUDA were not observed in cells treated with a microtubule-destabilizing drug, benomyl, suggesting they are microtubule-dependent. The rate of GFP-NUDA tip-ward movement is similar to the rate of cytoplasmic microtubule polymerization toward the hyphal tip, suggesting that GFP-NUDA is associated and moving with the polymerizing ends of microtubules. A mutation in actin-related protein Arp1 of the dynactin complex abolishes the presence of these dynamic GFP-NUDA structures near the hyphal tip, suggesting a targeting role of the dynactin complex.
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Affiliation(s)
- X Xiang
- Department of Biochemistry and Molecular Biology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.
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36
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Ma DC, Sun YH, Zuo W, Chang KZ, Chu JJ, Liu YG. CD34+ cells derived from fetal liver contained a high proportion of immature megakaryocytic progenitor cells. Eur J Haematol 2000; 64:304-14. [PMID: 10863976 DOI: 10.1034/j.1600-0609.2000.90038.x] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Endoreplication and maturation of the megakaryocyte (MK) may be retarded or delayed during ontogenesis. In this study, CD34+ cells were isolated from both human fetal liver and adult bone marrow and incubated with thrombopoietin (TPO). The cell number, morphological characteristics, platelet-associated antigen phenotype, maturation stage and DNA ploidy of CD41+ cells were examined from day 0 to day 12 in culture. 1) TPO stimulated the proliferation of fetal liver (FL)-derived CD34+ cells with a mean 73.14-fold increase of CD41+ cells after 12 d in culture. Adult BM-derived CD34+ cells increased only slightly, with a mean 8.18-fold increase of CD41+ cells. 2) Although the membrane phenotype of both FL CD34+-derived MKs and BM CD34+ -derived MKs analyzed with CD41a, CD42a, CD61 and CD34 were similar, all FL CD34+-derived MKs were in maturation stage I and II and in low ploidy (<4N) class. By comparison, BM CD34+ MKs possessed 15% MKs in maturation stage III and IV and with 23% MKs in high ploidy class ( > 4N). 3) Most of cultured FL-derived CD34+ cells did not have a well developed demarcation system (DM) and numerous alpha-granules after 12 d incubation. von Willebrand factor (vWF) appeared earlier on the cultured BM-derived CD34+ cells than on FL-derived CD34+ cells. 4) The expression of both cyclin E and cyclin B1 progressively increased in FL CD34+ cells induced by TPO during 12 d in culture. 5) The expression of cyclin D1 gradually decreased in FL CD34+ cells induced by TPO over 12 d incubation. 6) Immunocytochemical analysis showed that cyclin D3 was detected only in cytoplasm of cultured FL-derived CD34+ cells, whereas in both cytoplasm and nuclei of cultured BM-derived CD34+ cells. These data suggest that FL-derived CD34+ cells contain a high proportion of immature megakaryocytic progenitor cells. It further suggests that TPO can push these progenitor cells into proliferation by upregulating the expression of cyclins B1 and E, and drive a high proportion of cells into megakaryocytic lineage.
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Affiliation(s)
- D C Ma
- Department of Experimental Medicine, Northern Hospital, Shenyang, Liaoning, China
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37
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Dai L, Wang Y, Shen H, Zuo W, Kan X. [The significance of endometrial biopsy during luteal median phase in diagnosis of luteal function]. Zhonghua Bing Li Xue Za Zhi 1999; 28:344-7. [PMID: 11869546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the significance of progesterone profile and endometrial biopsy during luteal median phase in diagnosis of luteal function. METHODS The progesterone profile during median luteal phase and endometrial histology during median and late luteal phase of 53 infertile women with infertile and recurrent abortion for unknown reasons were studied. RESULTS Retarded endometrial development occurred in the median luteal phase in 24 of the 53 cases, 9 of which lasted into the late phase. The average progesterone profile of these patients was markedly lower compared with the control group (P < 0.05). However, the average progesterone profile remained normal in the other 13 cases, in whom, RED got normalized in the late luteal phase. Endometrial biopsies taken during the median and late luteal phase from the rest of 29 cases were normal. CONCLUSIONS In patients with retarded endometrial development during the full luteal phase, luteal function was decreased, but in patients with retarded endometrial development only during the median luteal phase, luteal function appeared to be normal.
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Affiliation(s)
- L Dai
- Department of Pathology, People's Hospital, Beijing Medical University, Beijing 100044
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Abstract
In the filamentous fungus Aspergillus nidulans, nuclear migration in the germ tube is mediated by cytoplasmic dynein. We have previously reported the characterization of four nud (nuclear distribution) genes, nudA, nudC, nudF and nudG, involved in this process. The nudA and nudG genes respectively encode for the heavy chain and the 8-kDa light chain of cytoplasmic dynein. In this work, we describe an improved method for the isolation of nud mutants that has led to the identification of at least ten additional nud loci. We have cloned one of the genes, nudK, and determined that it encodes the actin-related protein Arp1, which is a component of the dynactin complex. This provides the first evidence that dynactin is involved in nuclear migration in A. nidulans.
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Affiliation(s)
- X Xiang
- Department of Pharmacology, UMDNJ-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
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39
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Zuo W, Li M, Liu Q. [Gastro-intestinal reconstruction by substitution of "O" shaped jejunum after total gastrectomy]. Zhonghua Yi Xue Za Zhi 1998; 78:677-8. [PMID: 11038792] [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: 02/18/2023]
Abstract
OBJECTIVE To discuss a satisfying method for alimentary continuity reconstruction after total gastrectomy. METHOD An "O" shaped jejunum pouch or a new "stomach" was constructed in between esophagus and duodenum after total gastrectomy. RESULTS Thirty-nine cases of gastric malignant tumor were treated by this method. The 3 and 5 years disease free survival rate were 67.7% and 55.6%. All the patients recovered their normal meal habit (3 meals a day) within 6 months postoperatively. Compared with the preoperative and the postoperative (one year after operation), body weight is equal level, increasing and decreasing in 71.1%, 15.8% and 13.1% of the cases respectively. There were no posterior sternal pain and food or digestive fluid reflux, no dumping syndrome in these patients. The volume enlargement of the "new stomach" was observed obviously, especially in "stomach fundus". CONCLUSION This operation is a satisfying method for alimentary canal reconstruction after total gastrectomy and it is worthy to be recommended in gastric surgery.
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Affiliation(s)
- W Zuo
- Shandong Tumor Hospital & Institute, Jinan
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40
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Schulick AH, Taylor AJ, Zuo W, Qiu CB, Dong G, Woodward RN, Agah R, Roberts AB, Virmani R, Dichek DA. Overexpression of transforming growth factor beta1 in arterial endothelium causes hyperplasia, apoptosis, and cartilaginous metaplasia. Proc Natl Acad Sci U S A 1998; 95:6983-8. [PMID: 9618525 PMCID: PMC22710 DOI: 10.1073/pnas.95.12.6983] [Citation(s) in RCA: 143] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Uninjured rat arteries transduced with an adenoviral vector expressing an active form of transforming growth factor beta1 (TGF-beta1) developed a cellular and matrix-rich neointima, with cartilaginous metaplasia of the vascular media. Explant cultures of transduced arteries showed that secretion of active TGF-beta1 ceased by 4 weeks, the time of maximal intimal thickening. Between 4 and 8 weeks, the cartilaginous metaplasia resolved and the intimal lesions regressed almost completely, in large part because of massive apoptosis. Thus, locally expressed TGF-beta1 promotes intimal growth and appears to cause transdifferentiation of vascular smooth muscle cells into chondrocytes. Moreover, TGF-beta1 withdrawal is associated with regression of vascular lesions. These data suggest an unexpected plasticity of the adult vascular smooth muscle cell phenotype and provide an etiology for cartilaginous metaplasia of the arterial wall. Our observations may help to reconcile divergent views of the role of TGF-beta1 in vascular disease.
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Affiliation(s)
- A H Schulick
- Molecular Hematology Laboratory, National Heart, Lung, and Blood Institute, Bethesda, MD 20892, USA
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Shigeta H, Zuo W, Yang N, DiAugustine R, Teng CT. The mouse estrogen receptor-related orphan receptor alpha 1: molecular cloning and estrogen responsiveness. J Mol Endocrinol 1997; 19:299-309. [PMID: 9460651 DOI: 10.1677/jme.0.0190299] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Estrogen receptor-related orphan receptor alpha 1 is a member of the steroid/thyroid nuclear receptor superfamily. We have previously cloned the human estrogen receptor-related orphan receptor alpha 1 (hERR alpha 1) cDNA and demonstrated that it enhances estrogen responsiveness of the lactoferrin gene promoter in transfected human endometrial carcinoma cells. In the present study, we used the hERR alpha 1 cDNA as a probe and isolated the mouse homologue of ERR alpha 1 from the cDNA libraries of the brain and kidney. Sequence comparison between human and mouse ERR alpha 1 (mERR alpha 1) revealed that the homologies are 89% in nucleotides and 97% in amino acids. By electrophoresis mobility shift assay, we showed that the glutathione S-transferase-mERR alpha 1 fusion protein produced in a bacterial system bound to the human ERR alpha 1 DNA-binding element. Mouse uterine nuclear extract also interacted with this DNA element and produced three complexes in the mobility shift assay, one of which was supershifted by the hERR alpha 1 antiserum. A 2.2 kbp transcript was detected by Northern analysis in all adult mouse tissues tested; however, large variations in the amount of ERR alpha 1 mRNA were found among them. Multiple immunoreactive forms of mouse ERR alpha 1 were detected by Western analysis in non-reproductive tissues, whereas a major 53 kDa protein was found in reproductive tissues such as uterus, cervix and vagina. Diethylstilbestrol (DES) stimulated the expression of ERR alpha 1 mRNA in the uterus of 19-day-old mouse. We showed that DES and estradiol, but not progesterone or dexamethasone, enhanced the level of immunoreactive ERR alpha 1 in the mouse uterus. These results demonstrated that the ERR alpha 1 is an estrogen-responsive gene in the mouse uterus and provides a model system with which to study the biological roles of this nuclear orphan receptor.
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MESH Headings
- Amino Acid Sequence
- Animals
- Binding Sites
- Cloning, Molecular
- Estrogens/pharmacology
- Female
- Gene Expression/drug effects
- Gene Expression/genetics
- Male
- Mice
- Mice, Inbred Strains
- Molecular Sequence Data
- Protein Binding
- RNA, Messenger/analysis
- RNA, Messenger/genetics
- Receptors, Cytoplasmic and Nuclear/drug effects
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Receptors, Estrogen/drug effects
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Receptors, Steroid/metabolism
- Sequence Homology, Amino Acid
- Tissue Distribution
- Uterus/drug effects
- Uterus/metabolism
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Affiliation(s)
- H Shigeta
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
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Zuo W, Yi L, Wang Y. [Clinical research of nipple-areola preserved mastectomy and one-stage breast reconstruction with rectus abdominis musculocutaneous flaps]. Zhonghua Yi Xue Za Zhi 1997; 77:491-3. [PMID: 9772446] [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: 02/09/2023]
Abstract
OBJECTIVE To discuss the method for nipple-areola preserved mastectomy with one-stage breast reconstruction in cancer surgery. METHODS Because of the merits of sufficient blood supply and plasticity of rectus abdominis musculocutaneous flap, we used one-stage breast reconstruction after modified radical mastectomy. The incision line was covered and the nipple-areola was preserved. The reconstructed breast was naturally in contour. RESULTS 21 cases were treated from 1990 to 1995, and 18 of them received horizontal-rhombus shaped rectus abdominis musculocutaneous flaps and 3 longitudinal-rhombus flaps for breast reconstruction. Nipple-areola was preserved in 16 cases. Objective evaluation after operation showed that the excellent and satisfied rate reached to 90.5%; and subjective evaluation showed that the excellent and satisfied rate reached to 95.2%. Thirteen cases have been followed up for 3 years, and 9 for 5 years. Three-year survival rate was 100% (13/13), and 5-year 88.9% (8/9). CONCLUSION The method is recommendable for the treatment of stage I-II breast cancer.
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Affiliation(s)
- W Zuo
- Shandong Tumor Hospital & Institute, Jinan
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Abstract
Megakaryocytes in fetal livers obtained from 30 water-balloon aborted normal fetuses of 3 to 6 months' gestation, in the bone marrow from the same 30 fetuses, and another 9 fetuses of 7 to 8 months' gestation and in the normal bone marrow of adults were analyzed by immunocytochemical staining for size and maturation stage distribution and by flow cytometry for ploidy distribution simultaneously. In human fetuses, megakaryocytes showed a shift during ontogenesis from smaller towards larger size and from less mature towards a more mature stage with advancement of gestation. This was accompanied by a significant progressive shift to higher ploidy. However, the proportions (78.64%) of hypoploidy (< or = 8N) megakaryocytes in bone marrow of 7-8 months' gestation fetuses was still much higher than that (33.32%) in human adults (p < 0.05), with the proportion of hyperploidy (> or = 16N) megakaryocytes lower than that (67.86%) in human adults. This result indicated that megakaryocyte polyploidization may be retarded or inhibited during development.
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Affiliation(s)
- D C Ma
- Department of Experimental Medicine, General Hospital of Shenyang, Liaoning, China
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44
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Pu Z, Zhu W, Jing Z, Zeng Z, Zuo W. [Effect of tetramethyl pyrazine on coronary vasoconstriction induced by endothelin-1 in dogs]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1996; 18:133-7. [PMID: 9208604] [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: 02/04/2023]
Abstract
The purpose of this study was to determine the antagonistic effect of tetramethyl pyrazine (TMP), a sort of chinese herbal medicine, on coronary vasoconstriction induced by endothelin-1 (ET-1) in closed chest dogs. ET-1 at doses of 50, 75 and 100 pmol was selectively administered into left main coronary artery and coronary angiogram was performed in 1, 3 and 10 minutes after intracoronary administration of ET-1. After a 60 minute interval ET-1 administration and coronary angiogram were repeated in two groups in group A with 5 dogs intravenous infusion of saline solution was administered while in group B with 4 dogs TMP was infused at a dose of 80 mg/kg. Blood pressure of intra-femoral artery, heart rate and ECG were monitored during the experiment. The study demonstrated that coronary vessel diameter significantly decreased by 17% (P < 0.02) in group A and 20% (P < 0.02) in group B, associated with ischemia in ECG (4/5 in group A and 3/4 in group B) after intracoronary administration of ET-1. Endothelin-1 induced coronary vasoconstriction and ischemic changes in ECG were significantly inhibited by intravenous TMP. The coronary diameter increased by 20% (P < 0.03) after administration of TMP, comparing with the control group. Heart rate had an increased response to TMP. In conclusion this study demonstrated that intracoronary administration of ET-1 caused significant myocardial ischemia through coronary vasoconstriction, which was inhibited by TMP. TMP significantly dilated coronary artery.
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Affiliation(s)
- Z Pu
- PUMC Hospital, CAMS and PUMC, Beijing
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Zuo W, Wang P. [Comparative study on assessment of tubal patency among tubal insufflation, hydrotubation, hysterosalpingography and chromotubation under laparoscopy]. Zhonghua Fu Chan Ke Za Zhi 1996; 31:29-31. [PMID: 8758816] [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: 02/02/2023]
Abstract
OBJECTIVES To compare the diagnostic value of tubal insufflation, hydrotubation, hysterosalpingography (HSG) and chromotubation under laparoscopy for tubal patency assessment. METHODS Among 258 women who underwent chromofubation during laparoscopy procedures for infertility assessment in our hospital, tubal insufflation were performed in 42 cases, hydrotubation in 70, HSG in 63, both insufflation and hydrotubation in 20, insufflation and HSG in 11, and hydrotubation and HSG in 22. The accuracy of each method was compared with that of chromotubation under laparoscopy. RESULTS The accuracy rates of hydrotubation (87.1%) and HSG (73.0%) were significantly higher than that of insufflation (50.0%) (P < 0.01, P < 0.05 respectively). Similar results were shown when 2 different procedures in the same patient were compared with laparoscopy. CONCLUSIONS Tubal insufflation has no longer its place in tubal patency assessment due to its grossly inaccuracy; Both hydrotubation and HSG can be used as screening methods. Laparoscopy is the most accurate procedure in assessing tubal patency, as well as in searching pelvic abnormalities.
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Affiliation(s)
- W Zuo
- First Hospital of Beijing Medical University
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46
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Wang SJ, Weiguny A, Zuo W, Li FL. Continuous-variable representation of dynamic groups in quantum systems. II. The extreme-eigenstate approach. Phys Rev A 1993; 47:4641-4648. [PMID: 9909490 DOI: 10.1103/physreva.47.4641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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