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Xiao Z, Tang Z, Qiang J, Wang S, Qian W, Zhong Y, Wang R, Wang J, Wu L, Tang W, Zhang Z. Intravoxel Incoherent Motion MR Imaging in the Differentiation of Benign and Malignant Sinonasal Lesions: Comparison with Conventional Diffusion-Weighted MR Imaging. AJNR Am J Neuroradiol 2018; 39:538-546. [PMID: 29371251 DOI: 10.3174/ajnr.a5532] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 11/14/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND PURPOSE Intravoxel incoherent motion is a promising method for the differentiation of sinonasal lesions. This study aimed to evaluate the value of intravoxel incoherent motion in the differentiation of benign and malignant sinonasal lesions and to compare the diagnostic performance of intravoxel incoherent motion with that of conventional DWI. MATERIALS AND METHODS One hundred thirty-one patients with histologically proved solid sinonasal lesions (56 benign and 75 malignant) who underwent conventional DWI and intravoxel incoherent motion were recruited in this study. The diffusion coefficient (D), pseudodiffusion coefficient (D*), and perfusion fraction (f) values derived from intravoxel incoherent motion and ADC values derived from conventional DWI were measured and compared between the 2 groups using the Student t test. Receiver operating characteristic curve analysis, logistic regression analysis, and 10-fold cross-validation were performed to evaluate the diagnostic performance of single-parametric and multiparametric models. RESULTS The mean ADC and D values were significantly lower in malignant sinonasal lesions than in benign sinonasal lesions (both P < .001). The mean f value was higher in malignant lesions than in benign lesions (P = .003). Multiparametric models can significantly improve the cross-validated areas under the curve for the differentiation of sinonasal lesions compared with single-parametric models (all corrected P < .05 except the D value). The model of D+f provided a better diagnostic performance than the ADC value (corrected P < .001). CONCLUSIONS Intravoxel incoherent motion appears to be a more effective MR imaging technique than conventional DWI in the differentiation of benign and malignant sinonasal lesions.
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Wang LC, Zhong Y, Widmann D, Weissmüller J, Behm RJ. Oxygen Adsorption and Low-Temperature CO Oxidation on a Nanoporous Au Catalyst: Reaction Mechanism and Foreign Metal Effects. Top Catal 2018. [DOI: 10.1007/s11244-017-0881-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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103
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Zhong Y, Chaudhary V, Tan X, Parmar H, Ramanujan RV. Mechanochemical synthesis of high coercivity Nd 2(Fe,Co) 14B magnetic particles. NANOSCALE 2017; 9:18651-18660. [PMID: 28905064 DOI: 10.1039/c7nr04703g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
With increasing demand for magnets in energy conversion systems, the quest for the development and understanding of novel processing routes to produce permanent magnets has become urgent. We report a novel mechanochemical process for the synthesis of Nd2(Fe,Co)14B magnetic particles with a high coercivity of 12.4 kOe. This process involves the reduction of neodymium oxide, iron oxide, cobalt oxide and boron anhydride in the presence of a calcium reducing agent and a CaO diluent. The formation mechanism of Nd2(Fe,Co)14B changed with increasing CaO content, and the average crystal size of the Nd2(Fe,Co)14B particles also increased, resulting in an increase in the coercivity values. The reaction mechanism during milling was revealed through a study of the phase transformations as a function of milling time. It was found that unlike self-propagating reactions, this reduction reaction during milling requires continuous input of mechanical energy to reach a steady state.
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Xu J, Wei Y, Chang W, Jian M, Ye Q, Wang X, Ren L, Zhong Y, Qin X, Fan J. Robot-assisted procedure versus open surgery for simultaneous resection of colorectal cancer with liver metastases: Short-term outcomes of a randomized controlled study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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105
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Parmar H, Xiao T, Chaudhary V, Zhong Y, Ramanujan RV. High energy product chemically synthesized exchange coupled Nd 2Fe 14B/α-Fe magnetic powders. NANOSCALE 2017; 9:13956-13966. [PMID: 28920126 DOI: 10.1039/c7nr02348k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The excellent hard magnetic properties of Nd2Fe14B based magnets have an enormous range of technological applications. Exchange-coupled Nd2Fe14B/α-Fe magnets were chemically synthesized by a microwave assisted combustion process to produce mixed oxides, followed by a reduction diffusion process to form magnetic nano-composite powder. This synthesis technique offers an inexpensive and facile platform to produce exchange coupled hard magnets. The size dependent magnetic properties were investigated. The formation mechanisms of the oxide powders and the reduction diffusion mechanism were identified. The microwave power was found to play a crucial role in determining the crystallite size. The coercivity of the powder increased with increasing particle size. Room temperature coercivity (Hc) values greater than 9 kOe and magnetization of 110 emu g-1 was obtained in particles with a mean size of ∼62 nm. An energy product of 5.2 MGOe was obtained, which is the highest reported value for chemically synthesized hard magnetic Nd2Fe14B/α-Fe powders.
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Weng YF, Qi RF, Zhang XD, Zhang L, Ke J, Zhong Y, Chen F, Xu Q, Lu GM. [The altered topology of brain structural network in patients with acute stress response after traffic accident]. ZHONGHUA YI XUE ZA ZHI 2017; 97:2751-2756. [PMID: 28954333 DOI: 10.3760/cma.j.issn.0376-2491.2017.35.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To explore the changes of brain activities in traffic accident survivors with acute stress response (ASR) within a week by using complex networks analysis method based on graph-theory, and to find out the alteration of topological properties in structural brain network. Method: From January, 2013 to February, 2016, twenty traffic accidents survivors with acute stress disorders (Acute Stress Disorder Interview, ASDI>3)and twenty healthy controls underwent the 3T diffusion tensor imaging (DTI) magnetic resonance imaging scan in Nanjing General Hospital.The graph-theory analysis method was used to compare the structural brain network properties and nodal features between ASR survivors and controls.Statistical analyses were also performed by including anxiety and depression as covariates to evaluate their effect.In additional, Pearson correlation was performed between abnormal parametric values and clinical indices. Results: (1) The brain structural networks had small-world properties in both groups; (2) while compared with healthy controls, patients with ASR showed increased weighted connectivity strength (Si, 1.36±0.47 vs 0.92±0.38, P=0.008) and nodal betweenness centrality (BCi, 20±15 vs 7±6, P=0.002) in left triangular part of inferior frontal (IFG triang_L), increased Si in orbital part of inferior frontal gyrus (1.10±0.31 vs 0.77±0.30, P=0.004) and obviously decreased Si in left caudate (0.75±0.24 vs 1.04±0.35, P=0.004); (3) furthermore, the inclusion of anxiety and depression as covariates abolished nodal parameters differences in IFG triang_L, left caudate, thalamus and inferior temporal gyrus. Conclusions: The brain structure network in ASR patients has small world properties.But nodal parameters change obviously in some nodes compared with healthy controls and mainly locate in prefrontal lobe and striatum. High levels of anxiety and depression in ASR patients may partly account for these alterations.
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Fu LC, Lv Y, Zhong Y, He Q, Liu X, Du LZ. Tyrosine phosphorylation of Kv1.5 is upregulated in intrauterine growth retardation rats with exaggerated pulmonary hypertension. ACTA ACUST UNITED AC 2017; 50:e6237. [PMID: 28902925 PMCID: PMC5597283 DOI: 10.1590/1414-431x20176237] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 07/04/2017] [Indexed: 12/12/2022]
Abstract
Intrauterine growth retardation (IUGR) is associated with the development of adult-onset diseases, including pulmonary hypertension. However, the underlying mechanism of the early nutritional insult that results in pulmonary vascular dysfunction later in life is not fully understood. Here, we investigated the role of tyrosine phosphorylation of voltage-gated potassium channel 1.5 (Kv1.5) in this prenatal event that results in exaggerated adult vascular dysfunction. A rat model of chronic hypoxia (2 weeks of hypoxia at 12 weeks old) following IUGR was used to investigate the physiological and structural effect of intrauterine malnutrition on the pulmonary artery by evaluating pulmonary artery systolic pressure and vascular diameter in male rats. Kv1.5 expression and tyrosine phosphorylation in pulmonary artery smooth muscle cells (PASMCs) were determined. We found that IUGR increased mean pulmonary artery pressure and resulted in thicker pulmonary artery smooth muscle layer in 14-week-old rats after 2 weeks of hypoxia, while no difference was observed in normoxia groups. In the PASMCs of IUGR-hypoxia rats, Kv1.5 mRNA and protein expression decreased while that of tyrosine-phosphorylated Kv1.5 significantly increased. These results demonstrate that IUGR leads to exaggerated chronic hypoxia pulmonary arterial hypertension (CH-PAH) in association with decreased Kv1.5 expression in PASMCs. This phenomenon may be mediated by increased tyrosine phosphorylation of Kv1.5 in PASMCs and it provides new insight into the prevention and treatment of IUGR-related CH-PAH.
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Zhong Y, Yang J, Xu WW, Wang Y, Zheng CC, Li B, He QY. KCTD12 promotes tumorigenesis by facilitating CDC25B/CDK1/Aurora A-dependent G2/M transition. Oncogene 2017; 36:6177-6189. [PMID: 28869606 PMCID: PMC5671937 DOI: 10.1038/onc.2017.287] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 06/19/2017] [Accepted: 07/14/2017] [Indexed: 02/06/2023]
Abstract
Cell cycle dysregulation leads to uncontrolled cell proliferation and tumorigenesis. Understanding the molecular mechanisms underlying cell cycle progression can provide clues leading to the identification of key proteins involved in cancer development. In this study, we performed proteomics analysis to identify novel regulators of the cell cycle. We found that potassium channel tetramerization domain containing 12 (KCTD12) was significantly upregulated in M phase compared with S phase. We also found that KCTD12 overexpression not only facilitated the G2/M transition and induced cancer cell proliferation, but also promoted the growth of subcutaneous tumors and Ki-67 proliferation index in mice. Regarding the mechanism underlying these phenomena, cyclin-dependent kinase 1 (CDK1) was identified as an interacting partner of KCTD12 by immunoprecipitation and mass spectrometry analysis, which showed that KCTD12 activated CDK1 and Aurora kinase A (Aurora A) and that the effects of KCTD12 on CDK1 phosphorylation and cell proliferation were abrogated by cell division cycle 25B (CDC25B) silencing. In addition, Aurora A phosphorylated KCTD12 at serine 243, thereby initiating a positive feedback loop necessary for KCTD12 to exert its cancer-promoting effects. Furthermore, we analyzed the expression levels of various genes and the correlations between the expression of these genes and survival using tumor tissue microarray and Gene Expression Omnibus (GEO) data sets. The data showed that KCTD12 expression was significantly upregulated in cervical and lung cancers. More importantly, high KCTD12 expression was associated with larger tumor sizes, higher pathological stages and poor patient survival. Collectively, our study demonstrate that KCTD12 binds to CDC25B and activates CDK1 and Aurora A to facilitate the G2/M transition and promote tumorigenesis and that Aurora A phosphorylates KCTD12 at serine 243 to trigger a positive feedback loop, thereby potentiating the effects of KCTD12. Thus, the KCTD12-CDC25B-CDK1-Aurora A axis has important implications for cancer diagnoses and prognoses.
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Epp SW, Hada M, Zhong Y, Kumagai Y, Motomura K, Mizote S, Ono T, Owada S, Axford D, Bakhtiarzadeh S, Fukuzawa H, Hayashi Y, Katayama T, Marx A, Müller-Werkmeister HM, Owen RL, Sherrell DA, Tono K, Ueda K, Westermeier F, Miller RJD. Time zero determination for FEL pump-probe studies based on ultrafast melting of bismuth. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2017; 4:054308. [PMID: 29152535 PMCID: PMC5658228 DOI: 10.1063/1.4999701] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/11/2017] [Indexed: 05/18/2023]
Abstract
A common challenge for pump-probe studies of structural dynamics at X-ray free-electron lasers (XFELs) is the determination of time zero (T0)-the time an optical pulse (e.g., an optical laser) arrives coincidently with the probe pulse (e.g., a XFEL pulse) at the sample position. In some cases, T0 might be extracted from the structural dynamics of the sample's observed response itself, but generally, an independent robust method is required or would be superior to the inferred determination of T0. In this paper, we present how the structural dynamics in ultrafast melting of bismuth can be exploited for a quickly performed, reliable and accurate determination of T0 with a precision below 20 fs and an overall experimental accuracy of 50 fs to 150 fs (estimated). Our approach is potentially useful and applicable for fixed-target XFEL experiments, such as serial femtosecond crystallography, utilizing an optical pump pulse in the ultraviolet to near infrared spectral range and a pixelated 2D photon detector for recording crystallographic diffraction patterns in transmission geometry. In comparison to many other suitable approaches, our method is fairly independent of the pumping wavelength (UV-IR) as well as of the X-ray energy and offers a favorable signal contrast. The technique is exploitable not only for the determination of temporal characteristics of the experiment at the interaction point but also for investigating important conditions affecting experimental control such as spatial overlap and beam spot sizes.
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Flannery K, Cao X, He J, Zhong Y, Shah A, Kamat A. Real world treatment costs and resource utilization among patients with metastatic bladder cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx375.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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111
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Wang Q, Wang Q, Wang SF, Jiao LJ, Zhang RX, Zhong Y, Zhang J, Xu L. Oral Chinese herbal medicine as maintenance treatment after chemotherapy for advanced non-small-cell lung cancer: a systematic review and meta-analysis. ACTA ACUST UNITED AC 2017; 24:e269-e276. [PMID: 28874897 DOI: 10.3747/co.24.3561] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND The concept of maintenance therapy in cancer treatment is currently under debate because of modest survival benefits, added toxicity, economic considerations, and quality-of-life concerns. Traditional Chinese Medicine (tcm) is widely used in China for cancer patients, offering the advantages of low toxicity and enhancement of quality of life. However, no systematic reviews or meta-analyses have assessed the role of tcm as maintenance treatment for non-small-cell lung carcinoma. METHODS We searched the Chinese Biomedical Literature Database, the China National Knowledge Infrastructure, PubMed, embase, and the Cochrane Library databases for all eligible studies. The endpoints were overall survival (os), progression-free survival (pfs), the 1-year and 2-year survival rates, and performance status. Our meta-analysis used a fixed-effects model and a random-effects model for heterogeneity in the Stata software application (version 11.0: StataCorp LP, College Station, TX, U.S.A.), with the results expressed as hazard ratios (hrs) or risk ratios (rrs), with their corresponding 95% confidence intervals (95% cis). RESULTS Sixteen randomized studies representing 1150 patients met the inclusion criteria. Compared with best supportive care, observation, or placebo, tcm as maintenance treatment was associated with a significant increase in os (hr: 0.49; 95% ci: 0.35 to 0.68; p < 0.001), pfs (hr: 0.66; 95% ci: 0.51 to 0.84; p = 0.001), and 2-year survival rate (rr: 0.63; 95% ci: 0.44 to 0.92, p = 0.017), and a significant improvement in performance status (rr: 0.68; 95% ci: 0.61 to 0.75; p < 0.001). CONCLUSIONS For patients who show non-progression-including stable disease, partial response, or complete response-after first-line chemotherapy, including those with poor quality of life, oral Chinese herbal medicine can be considered an efficient and safe maintenance therapy strategy.
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Morales D, Ergatoudes C, Zhong Y, Thunstrom E, Mandalenakis Z, Hansson PO, Rosengren A, Caidahl K, Fu M. P3451Iron deficiency as risk factor for heart failure and myocardial dysfunction in a male general population sample during 21-years follow-up. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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113
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Ergatoudes C, Thunstrom E, Morales D, Zhong Y, Mandalenakis Z, Xiaojing C, Hansson PO, Caidahl K, Rosengren A, Fu M. P2470Biomarkers and risk of heart failure in middle-aged men from a random sample of the general population during a 21-year follow-up. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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114
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Chen X, Thunstrom E, Ergatoudes C, Hansson PO, Zhong Y, Rosengren A, Mandalenakis Z, Caidahl K, Fu M. P2453Less than half of men aged 71 in a general population have normal heart function: a prospective longitudinal 21-year follow-up. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chen L, Tang M, Zhong Y, Zhai ZQ, Dong XN, Guo TT, Zhang S. P1454The use of a modified pericardial puncture set to facilitate epicardial access in canines. Europace 2017. [DOI: 10.1093/ehjci/eux158.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Zhong Y, Wang N. Erratum to “Traditional acupuncture and myocardial ischemia” [Int. J. Cardiol. 189 (2015) 281]. Int J Cardiol 2017; 235:208. [DOI: 10.1016/j.ijcard.2017.03.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zhong Y, Ostach D, Scholz M, Epp SW, Techert S, Schlichting I, Ullrich J, Krasniqi FS. Hot carrier relaxation in CdTe via phonon-plasmon modes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:095701. [PMID: 27991427 DOI: 10.1088/1361-648x/aa5478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carrier and lattice dynamics of laser excited CdTe was studied by time-resolved reflectivity for excitation fluences spanning about three orders of magnitude, from 0.064 to 6.14 mJ cm-2. At fluences below 1 mJ cm-2 the transient reflectivity is dominated by the dynamics of hybrid phonon-plasmon modes. At fluences above 1 mJ cm-2 the time-dependent reflectivity curves show a complex interplay between band-gap renormalization, band filling, carrier dynamics and recombination. A framework that accounts for such complex dynamics is presented and used to model the time-dependent reflectivity data. This model suggests that the excess energy of the laser-excited hot carriers is reduced much more efficiently by emitting hybrid phonon-plasmon modes rather than bare longitudinal optical phonons.
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Zhong Y, Zhou Z, Fang X, Peng F, Zhang W. Magnetic resonance imaging study of cryptococcal neuroradiological lesions in HIV-negative cryptococcal meningitis. Eur J Clin Microbiol Infect Dis 2017; 36:1367-1372. [DOI: 10.1007/s10096-017-2941-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 02/13/2017] [Indexed: 10/20/2022]
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Yao R, Pan B, Zhu Q, Xu Q, Zhou Y, Zhang J, Mao F, You S, Lin Y, Shi J, Guan J, Wang X, Zhang Y, Zhang X, Shen S, Zhong Y, Xu Y, Liang Z, Jiang Y, Sun Q. Abstract P5-02-05: Biology and long-term prognosis of screening detected non-palpable breast cancer by ultrasound in hospital-based Chinese population (2001-2014). Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-02-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Milestone studies showed that ultrasound (US) was an effective primary screening test for breast cancer both in the western world and in China [PMID: 26712110, 26715161, and 25668012]. Ultrasound has been officially designated to be the initial imaging test for breast cancer screening in Beijing and several other cities in China, due to its improved sensitivity in Chinese women who usually have denser breasts and develop breast cancer earlier than Caucasian counterparts. Study showed that it would take 40 years to screen each woman in the target age group once [PMID: 26808342].The mainstay modality of breast cancer screening in China is the hospital-based opportunistic screening among asymptomatic self-referred women. However, there is little data about the tumor biology and long-term survival of the US-detected non-palpable breast cancer (NPBC) in hospital-based Chinese population.
Methods: From January 2001 to December 2014, 3,786 asymptomatic women with positive (BI-RADS 4 and 5) initial screening US underwent biopsies in Peking Union Medical College Hospital, and 572 NPBC in 556 women were diagnosed. Women without dense breasts (defined as BI-RADS category C and D) also received screening mammography (MG) after physical examination and ultrasound. 788 patients with positive (BI-RADS 4 and 5) mammogram (MG) and normal US (BI-RADS 1, 2 and 3) underwent MG-guided biopsies and another 127 NPBC were diagnosed in 126 women. The clinicopathological features, treatment choice, 10-year disease-free survival (DFS) and overall survival (OS) were reviewed and compared between the US-detected and MG-detected NPBC. Prognostic factors of NPBC were identified.
Results: Overall, US could detect more invasive NPBC (83.4% vs 54.3%, p<0.001), lymph node positive cancer (19.1% vs 10.2%, p<0.001)and multifocal cancer (19.2% vs 6.3%, p<0.001). In invasive NPBC, US detected more low grade cancer (21.4% vs 10.2%, p=0.001), multifocal cancer (20.7% vs 2.9%, p<0.001), Her2 negative cancer (77.6% vs 62.3%, p=0.001) and larger tumor (pT1c+pT2, 53.3% vs 37.6%, p<0.001). There was no significant difference in immunophenotype/subtype, treatment methods, DFS or OS between US- and MG-NPBC among ductal carcinoma in situ (DCIS), invasive and all NPBC. For all NPBC and the US-NPBC, the common DFS-factors included pT, pN and p53 whereas OS-predictors were pN and immunophenotype/subtype.
Table 1. Kaplan-Meier estimates of DFS and OS between US-NPBC and MG-NPBC§.Patients (No.)10-year DFS (%)P value10-year OS (%)P valueAllUS-NPBC (572)90.60.73896.10.142 MG-NPBC (127)92.7 100.0 DCISUS-NPBC (94)100.00.060100.0- MG-NPBC (58)93.8 100.0 InvasiveUS-NPBC (478)88.60.68095.20.239 MG-NPBC (69)92.0 100.0 § Kaplan-Meier survival curves between each two subgroups would be displayed in the poster.
Conclusion: Compared to MG, US detected more invasive NPBC with positive lymph node in hospital-based asymptomatic self-referred Chinese women, who could achieve comparable 10-year DFS and OS as MG-detected NPBC. US could serve as the feasible initial imaging modality in hospital-based opportunistic screening Chinese women.
Citation Format: Yao R, Pan B, Zhu Q, Xu Q, Zhou Y, Zhang J, Mao F, You S, Lin Y, Shi J, Guan J, Wang X, Zhang Y, Zhang X, Shen S, Zhong Y, Xu Y, Liang Z, Jiang Y, Sun Q. Biology and long-term prognosis of screening detected non-palpable breast cancer by ultrasound in hospital-based Chinese population (2001-2014) [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-02-05.
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Zhong Y, Goldenfeld Z, Li K, Streyer W, Yu L, Nordin L, Murphy N, Wasserman D. Mid-wave infrared narrow bandwidth guided mode resonance notch filter. OPTICS LETTERS 2017; 42:223-226. [PMID: 28081078 DOI: 10.1364/ol.42.000223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We have designed, fabricated, and characterized a guided mode resonance notch filter operating in the technologically vital mid-wave infrared (MWIR) region of the electromagnetic spectrum. The filter provides a bandstop at λ≈4.1 μm, with a 12 dB extinction on resonance. In addition, we demonstrate a high transmission background (>80%), less than 6% transmission on resonance, and an ultra-narrow bandwidth transmission notch (10 cm-1). Our filter is optically characterized using angle- and polarization-dependent Fourier transform infrared spectroscopy, and simulated using rigorous coupled-wave analysis (RCWA) with excellent agreement between simulations and our experimental results. Using our RCWA simulations, we are able to identify the optical modes associated with the transmission dips of our filter. The presented structure offers a potential route toward narrow-band laser filters in the MWIR.
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Wang YW, Chen T, Ma J, Zhong Y. [Temporal and spatial characteristics of RGC death and axon degeneration in the rat model of nonarteritic anterior ischemic optic neuropathy]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 2016; 52:918-923. [PMID: 27998456 DOI: 10.3760/cma.j.issn.0412-4081.2016.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the temporal and spatial characteristics of retinal ganglion cell (RGC) death and axon degeneration in the rat model of nonarteritic anterior ischemic optic neuropathy (rNAION). Methods: Experimental study. The model of rNAION was induced by directly illuminating the optic nerve head with laser, after intravenous infusion with the photosensitizing agent rose Bengal. Seventy-one SD rats were randomly divided into five groups: 1-week (n=14), 2-week (n=14), 4-week (n=15) , 8-week (n=16) model group and the normal control group (n=12). Hematoxylin and eosin (H&E) staining and morphometric measurement with FG labeling were performed to assess rNAION-indeced histologic changes in the retina at different time points. RGCs were counted on retinal flat mounts in a masked fashion. Semithin sections stained with toluidine blue and transmission electron microscopy were performed to evaluate axonal degeneration. The differences of RGC density among multiple groups were tested with one-way ANOVA while the survival rate of RGC with kruskal-Wallis. Results: H&E-stained retina sections of rNAION revealed RGC loss. The density of labeled RGC was (2 273±219) cells/mm2 in the control group, (2 075±120) cells/mm2 in the 1-week group, (1 783±143) cells/mm2 in the 2-week group, (1 330±169) cells/mm2 in the 4-week group and (869±301) cells/mm2 in the 8-week group. There were significant differences between all pairs of groups (F=80.98, P<0.01). The impairment of RGC was aggravatedprogressively, which mainly in the upper quadrant. The survival rate of RGC was 99.9%±3.4%, 91.8%±2.9%, 72.6%±5.7%, 54.4%±7.0% and 37.5%±13.0%, respectively. There were significant differences between the 1-week and 2-week group(Z=-3.78, P<0.01), the 2-week and 4-week group(Z=-3.89, P<0.01), and the 4-week and 8-week group(Z=-3.23, P<0.01). Toluidine blue staining of the ON revealed significant demyelination 1 week after ischemic damage. Progressive axonal degeneration existed for several weeks, which mainly affected the central region of the optic nerve with extensive reactive gliosis. Ultrastructural study showed axonal edema and collapsed sheaths in the ischemic optic. Four weeks later, there were extensive axonal loss and severe glial scars. Conclusions: rNAION results in regional and later RGC death. The extended period of RGC death after rNAION induction is much more longer than previously recognized. (Chin J Ophthalmol, 2016, 52: 918-923).
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Zhong Y. [Pay attention to the secondary optic neuropathy and the safe appropriate applications of optic neuroprotection]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 2016; 52:881-884. [PMID: 27998451 DOI: 10.3760/cma.j.issn.0412-4081.2016.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Secondary optic neuropathy of optic nerve abnormalities is the leading cause of persistent visual impairment. Previous ocular neuroprotection studies have proved that the nerve growth factor and other agents are of significant in the preservation of optic nerve axon and retinal ganglion cells. However, finding novel safe and effective approach as well as the appropriate applications of optic neuroprotection should be highly emphasized and would be very helpful in the treatment of optic neuropathy.(Chin J Ophthalmol, 2016, 52: 881-884).
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Wang YH, Ma J, Zhong Y. [Treatment of idiopathic intracranial hypertension]. [ZHONGHUA YAN KE ZA ZHI] CHINESE JOURNAL OF OPHTHALMOLOGY 2016; 52:948-951. [PMID: 27998460 DOI: 10.3760/cma.j.issn.0412-4081.2016.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Idiopathic intracranial hypertension(IIH) is a kind of diffuse brain swelling disease. Several causes could lead to IIH. Intracranial venous circulatory disturbance is more common. The clinical manifestations include intracranial pressure increased, headache and papilledema. Since IIH usually has serious impact on vision even blindness, the diagnosis and corresponding treatment are especially important. This review is to discuss the new insights on the therapeutic options of IIH, which cover medical treatment, weight-losing therapy, surgical treatment, interventional therapy and supportive treatment.(Chin J Ophthalmol, 2016, 52: 948-951).
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Liu R, Dev S, Zhong Y, Lu R, Streyer W, Allen JW, Allen MS, Wenner BR, Gong S, Wasserman D. Enhanced responsivity resonant RF photodetectors. OPTICS EXPRESS 2016; 24:26044-26054. [PMID: 27857343 DOI: 10.1364/oe.24.026044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The responsivity of room-temperature, semiconductor-based photodetectors consisting of resonant RF circuits coupled to microstrip buslines is investigated. The dependence of the photodetector response on the semiconductor material and RF circuit geometry is presented, as is the detector response as a function of the spatial position of the incident light. We demonstrate significant improvement in detector response by choice of photoconductive material, and for a given material, by positioning our optical signal to overlap with positions of RF field enhancement. Design of RF circuits with strong field enhancement are demonstrated to further improve detector response. The improved detector response demonstrated offers opportunities for applications in RF photonics, materials metrology, or single read-out multiplexed detector arrays.
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Weng YF, Qi RF, Zhang XD, Zhang L, Ke J, Zhong Y, Chen F, Xu Q, Lu GM. [Study of functional connectivity density mapping in patients with acute stress response by using resting-state functional MRI after traffic accident]. ZHONGHUA YI XUE ZA ZHI 2016; 96:3305-3310. [PMID: 27852375 DOI: 10.3760/cma.j.issn.0376-2491.2016.41.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To explore the changes of brain activity in traffic accident survivors with acute stress response within a week by using functional connectivity density (FCD) method. Method: A total of 20 traffic accidents survivors with acute stress disorders (acute stress disorder interview >3) and twenty healthy controls from Nanjing Jinling Hospital underwent the 3.0 T resting-state functional magnetic resonance imaging scan from January 2013 to February 2016. Functional connectivity density mapping was used to compare the brain functional connective networks between acute stress response survivors and controls. In additional, Pearson correlation was performed between abnormal short, long-range FCD values and clinical indices. Results: (1) Compared with controls, patients with acute stress response showed decreased short-range FCD in left ventromedial prefrontal cortex (-0.815±0.264 vs-0.468±0.615, t=-2.198, P<0.05), left hippocampal and parahippocampal gyri (-1.212±0.135 vs-0.887±0.234), t=-5.070, all P<0.05), and increased short-range FCD in right precentral gyrus(0.428±0.256 vs 0.016±0.298, t=4.456, P<0.05), left inferior parietal and superior parietal lobes (0.623±0.290 vs 0.143±0.300, t=4.878, allP<0.05); (2)compared with normal controls, ASR patients showed increased long-range FCD in left precuneus (0.502±0.400 vs-0.042±0.253, t=4.879, P<0.05); (3)the HAMA score of patients positively correlated with short-range FCD value of the left vmPFC (r=0.50, P<0.05). Conclusion: The long-and short-range functional connectivity in frontal-limbic system is widely changed in survivors with acute stress response, especially the short-range FCD change more significantly, and partly correlated with the severity of their stress symptoms.
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