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Luo L, Wang Z, Wang X, Gao J, Zheng A, Duan X. Fluorine-18 prostate-specific membrane antigen-1007-avid indeterminate bone lesions in prostate cancer: clinical and PET/CT features to predict outcomes and prognosis. Clin Radiol 2024; 79:346-353. [PMID: 38216370 DOI: 10.1016/j.crad.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/29/2023] [Accepted: 12/11/2023] [Indexed: 01/14/2024]
Abstract
AIM To determine clinical and fluorine-18 prostate-specific membrane antigen-1007 (18F-PSMA-1007) integrated positron-emission tomography (PET)/computed tomography (CT) features that could be used to interpret indeterminate bone lesions (IBLs) and assess the prognosis of prostate cancer (PCa) in patients with IBLs. MATERIALS AND METHODS Consecutive patients who underwent PSMA PET/CT were analysed retrospectively. IBLs were identified as benign or malignant based on follow-up imaging and clinical management. Lesion- and patient-based assessments were performed to define features predictive of bone lesion results and determine clinical risk. Patients' prognosis was analysed based on clinical characteristics, including prostate-specific antigen (PSA) and alkaline phosphatase (ALP), respectively. RESULTS A total of 105 patients (mean age ± SD, 72.1 ± 8 years) were evaluated and 158 IBLs were identified. Fifty-three (33.5%), 36 (22.8%), and 69 (43.7%) IBLs were benign, malignant, and equivocal, respectively. Variables including location, maximum standard uptake value (SUVmax), and lymph node metastases (LNM) were related to the benignancy or malignancy of IBLs (p=0.046, p<0.001 and p<0.001, respectively). Regression analysis indicated that LNM, SUVmax, and location of IBLs could be predictors of lesion interpretation (p<0.001, p=0.002 and p=0.035). Patients with benign IBLs experienced the most considerable decreases in PSA and ALP levels. CONCLUSIONS LNM, SUVmax, and location may contribute to IBL interpretation. A rapid decrease in PSA and ALP levels might suggest a better prognosis for patients with benign IBLs.
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Affiliation(s)
- L Luo
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Z Wang
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - X Wang
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - J Gao
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - A Zheng
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - X Duan
- PET/CT Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
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Xu Y, Wang Y, Zheng A, Yuan Y, Xu L, Tang Y, Qin Q. Efficient biostimulation of microbial dechlorination of polychlorinated biphenyls by acetate and lactate under nitrate reducing conditions: Insights into dechlorination pathways and functional genes. J Hazard Mater 2024; 468:133775. [PMID: 38367444 DOI: 10.1016/j.jhazmat.2024.133775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 02/04/2024] [Accepted: 02/09/2024] [Indexed: 02/19/2024]
Abstract
Microbial-catalyzed reductive dechlorination of polychlorinated biphenyls (PCBs) is largely affected by the indigenous sediment geochemical properties. In this study, the effects of nitrate on PCB dechlorination and microbial community structures were first investigated in Taihu Lake sediment microcosms. And biostimulation study was attempted supplementing acetate/lactate. PCB dechlorination was apparently inhibited under nitrate-reducing conditions. Lower PCB dechlorination rate and less PCB dechlorination extent were observed in nitrate amended sediment microcosms (T-N) than those in non-nitrate amended microcosms (T-1) during 66 weeks of incubation. The total PCB mass reduction in T-N was 17.6% lower than that in T-1. The flanked-para dechlorination was completely inhibited, while the ortho-flanked meta dechlorination was only partially inhibited in T-N. The 7.5 mM of acetate/lactate supplementation recovered PCB dechlorination by resuming ortho-flanked meta dechlorination. Repeated additions of lactate showed more effective biostimulation than acetate. Phylum Chloroflexi, containing most known PCB dechlorinators, was found to play a vital role on stability of the network structures. In T-N, putative dechlorinating Chloroflexi, Dehalococcoides and RDase genes rdh12, pcbA4, pcbA5 all declined. With acetate/lactate supplementation, Dehalococcoides grew by 1-2 orders of magnitude and rdh12, pcbA4, pcbA5 increased by 1-3 orders of magnitude. At Week 66, parent PCBs declined by 86.4% and 80.9% respectively in T-N-LA and T-N-AC compared to 69.9% in T-N. These findings provide insights into acetate/lactate biostimulation as a cost-effective approach for treating PCB contaminated sediments undergoing nitrate inhibition.
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Affiliation(s)
- Yan Xu
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
| | - Ying Wang
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - An Zheng
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Yaping Yuan
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Lei Xu
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Yanqiang Tang
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Qingdong Qin
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China
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Zheng A, Huang N, Bean D, Rayapaneni S, Deeney J, Sagar M, Hamilton JA. Resolvin E1 heals injured cardiomyocytes: Therapeutic implications and H-FABP as a readout for cardiovascular disease & systemic inflammation. Prostaglandins Leukot Essent Fatty Acids 2023; 197:102586. [PMID: 37604082 DOI: 10.1016/j.plefa.2023.102586] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023]
Abstract
The purpose of this study is to investigate heart-fatty acid binding protein (H-FABP) leakage from cardiomyocytes as a quantitative measure of cell membrane damage and to test healing by Resolvin E1 (RVE1) as a potential therapeutic for patients with inflammatory diseases (cardiovascular disease and comorbidities) with high morbidity and mortality. Our quantitative ELISA assays demonstrated H-FABP as a sensitive and reliable biomarker for measuring cardiomyocyte damage induced by lipopolysaccharide (LPS) and healing by RvE1, a specialized pro-resolving mediator (SPM) derived from the Omega-3 fatty acid, eicosapentaenoic acid (EPA), a dietary nutrient that balances inflammation to restore homeostasis. RvE1 reduced leakage of H-FABP by up to 86%, which supports our hypothesis that inflammation as a mechanism of injury can be targeted for therapy. H-FABP as a blood biomarker was tested in 40 patients admitted to Boston Medical Center for respiratory distress, (20 patients with and 20 patients without COVID infection). High levels of H-FABP correlated with clinically diagnosed CVD, diabetes, and end-stage renal disease (ESRD) in both patient groups. The level of H-FABP indicates not only CVD damage but is a valuable measure for patients with increased inflammation disease comorbidities.
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Affiliation(s)
- A Zheng
- Boston University, United States of America
| | - N Huang
- Boston University School of Medicine, United States of America
| | - D Bean
- Boston University School of Medicine, United States of America
| | | | - Jude Deeney
- Boston University School of Medicine, United States of America
| | - M Sagar
- Boston Medical Center, United States of America
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Zheng A, Shen Z, Glass CK, Gymrek M. Deep learning predicts the impact of regulatory variants on cell-type-specific enhancers in the brain. Bioinform Adv 2023; 3:vbad002. [PMID: 36726730 PMCID: PMC9887460 DOI: 10.1093/bioadv/vbad002] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/11/2022] [Accepted: 01/11/2023] [Indexed: 01/13/2023]
Abstract
Motivation Previous studies have shown that the heritability of multiple brain-related traits and disorders is highly enriched in transcriptional enhancer regions. However, these regions often contain many individual variants, while only a subset of them are likely to causally contribute to a trait. Statistical fine-mapping techniques can identify putative causal variants, but their resolution is often limited, especially in regions with multiple variants in high linkage disequilibrium. In these cases, alternative computational methods to estimate the impact of individual variants can aid in variant prioritization. Results Here, we develop a deep learning pipeline to predict cell-type-specific enhancer activity directly from genomic sequences and quantify the impact of individual genetic variants in these regions. We show that the variants highlighted by our deep learning models are targeted by purifying selection in the human population, likely indicating a functional role. We integrate our deep learning predictions with statistical fine-mapping results for 8 brain-related traits, identifying 63 distinct candidate causal variants predicted to contribute to these traits by modulating enhancer activity, representing 6% of all genome-wide association study signals analyzed. Overall, our study provides a valuable computational method that can prioritize individual variants based on their estimated regulatory impact, but also highlights the limitations of existing methods for variant prioritization and fine-mapping. Availability and implementation The data underlying this article, nucleotide-level importance scores, and code for running the deep learning pipeline are available at https://github.com/Pandaman-Ryan/AgentBind-brain. Contact mgymrek@ucsd.edu. Supplementary information Supplementary data are available at Bioinformatics Advances online.
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Affiliation(s)
| | | | - Christopher K Glass
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA,Department of Medicine, University of California San Diego, La Jolla, CA 92093, USA
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Moore H, Zheng A, Cairns A, Lillaney P, Black J. Enhancement of a Machine Learning Algorithm to Alert Sleep Clinicians of Patients at Risk for Narcolepsy, Using Nocturnal Polysomnography in General Sleep Medicine Clinics. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Bournet Q, Jonusas M, Zheng A, Guichard F, Natile M, Zaouter Y, Joffre M, Bonvalet A, Druon F, Hanna M, Georges P. Inline amplification of mid-infrared intrapulse difference frequency generation. Opt Lett 2022; 47:4885-4888. [PMID: 36181142 DOI: 10.1364/ol.467792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
We demonstrate an ultrafast mid-infrared source architecture that implements both intrapulse difference frequency generation (iDFG) and further optical parametric amplification (OPA), in an all-inline configuration. The source is driven by a nonlinearly compressed high-energy Yb-doped-fiber amplifier delivering 7.4 fs pulses at a central wavelength of 1030 nm, at a repetition rate of 250 kHz. It delivers 1 µJ, 73 fs pulses at a central wavelength of 8 µm, tunable over more than one octave. By enrolling all the pump photons in the iDFG process and recycling the long wavelength pump photons amplified in the iDFG in the subsequent OPA, we obtain an unprecedented overall optical efficiency of 2%. These performances, combining high energy and repetition rate in a very simple all-inline setup, make this technique ideally suited for a growing number of applications, such as high harmonic generation in solids or two-dimensional infrared spectroscopy experiments.
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Vu T, Eberly H, Zheng A, Hintze A, Cruz J, Shin B. Abstract No. 599 Clinical significance of measuring hepatic venous pressure gradient during transjugular liver biopsy for patients with precirrhotic bridging fibrosis liver disease. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Ou L, Luo J, Wei Z, Zheng A, Xu J, Shi B. Urachal tuberculosis with invasion of the bladder wall: A case report and literature review. Actas Urol Esp 2022; 46:1-3. [PMID: 34838494 DOI: 10.1016/j.acuroe.2020.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 12/17/2020] [Indexed: 11/20/2022]
Affiliation(s)
- L Ou
- Department of Urology, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, China
| | - J Luo
- Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Z Wei
- Department of Urology, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, China
| | - A Zheng
- Department of Pathology, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - J Xu
- Department of Urology, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, China
| | - B Shi
- Department of Urology, Shenzhen Second People's Hospital/the First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, Guangdong, China.
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Ou L, Luo J, Wei Z, Zheng A, Xu J, Shi B. Tuberculosis uracal con invasión de la pared vesical: informe de un caso y revisión de la literatura. Actas Urol Esp 2022. [DOI: 10.1016/j.acuro.2020.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li W, Li C, Zhang G, Li L, Huang K, Gong X, Zhang C, Zheng A, Tang Y, Wang Z, Tong Q, Dong W, Jiang S, Zhang S, Wang Q. Molecular Ferroelectric-Based Flexible Sensors Exhibiting Supersensitivity and Multimodal Capability for Detection. Adv Mater 2021; 33:e2104107. [PMID: 34510578 DOI: 10.1002/adma.202104107] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/19/2021] [Indexed: 06/13/2023]
Abstract
Although excellent dielectric, piezoelectric, and pyroelectric properties matched with or even surpassing those of ferroelectric ceramics have been recently discovered in molecular ferroelectrics, their successful applications in devices are scarce. The fracture proneness of molecular ferroelectrics under mechanical loading precludes their applications as flexible sensors in bulk crystalline form. Here, self-powered flexible mechanical sensors prepared from the facile deposition of molecular ferroelectric [C(NH2 )3 ]ClO4 onto a porous polyurethane (PU) matrix are reported. [C(NH2 )3 ]ClO4 -PU is capable of detecting pressure of 3 Pa and strain of 1% that are hardly accessible by the state-of-the-art piezoelectric, triboelectric, and piezoresistive sensors, and presents the ability of sensing multimodal mechanical forces including compression, stretching, bending, shearing, and twisting with high cyclic stability. This scaling analysis corroborated with computational modeling provides detailed insights into the electro-mechanical coupling and establishes rules of engineering design and optimization for the hybrid sponges. Demonstrative applications of the [C(NH2 )3 ]ClO4 -PU array suggest potential uses in interactive electronics and robotic systems.
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Affiliation(s)
- Wenru Li
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Changhao Li
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Guangzu Zhang
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Linkai Li
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Kai Huang
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, 430072, China
| | - Xuetian Gong
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Chao Zhang
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - An Zheng
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Yanxue Tang
- Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai, 200234, China
| | - Zhengzhi Wang
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, 430072, China
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China
| | - Qiaoling Tong
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Wen Dong
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Shenglin Jiang
- School of Optical and Electronic Information, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Sulin Zhang
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Qing Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
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Hao Q, Zheng A, Zhang H, Cao H. Down-regulation of betatrophin enhances insulin sensitivity in type 2 diabetes mellitus through activation of the GSK-3β/PGC-1α signaling pathway. J Endocrinol Invest 2021; 44:1857-1868. [PMID: 33464548 DOI: 10.1007/s40618-020-01493-1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 12/23/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The incidence of type 2 diabetes mellitus (T2DM) among children and adolescents has been rising. Accumulating evidences have noted the significant role of betatrophin in the regulation of lipid metabolism and glucose homeostasis. In our study, we tried to figure out the underlying mechanism of betatrophin in insulin resistance (IR) in type 2 diabetes mellitus (T2DM). METHODS First, fasting serum betatrophin, fasting blood glucose (FBG), insulin, total cholesterol (TC), triglyceride (TG), and low-density lipoprotein cholesterol (LDL-C) were detected in T2DM children. The homeostasis model assessment of insulin resistance (HOMA-IR), Gutt insulin sensitivity index (ISIG) and Matsuda insulin sensitivity index (ISIM) were calculated. A T2DM-IR mouse model was induced by high-fat diet, with the expression of GSK-3β and PGC-1α detected. Besides, HepG2 cells were induced by a high concentration of insulin to establish an IR cell model (HepG2-IR). The cell viability, glucose consumption, liver glycogen content, inflammation, and fluorescence level of GSK-3β and PGC-1α were analyzed. RESULTS Betatrophin was highly expressed in serum of T2DM children and was positively correlated with FBG, insulin, TC, TG, LDL-C and HOMA-IR, while negatively correlated with ISIG and ISIM. Betatrophin and GSK-3β in the liver tissues of T2DM-IR mice were increased, while the PGC-1α expression was decreased. Betatrophin expression was negatively correlated with PGC-1α and positively correlated with GSK-3β. Silencing of betatrophin enhanced insulin sensitivity through the activation of GSK-3β/PGC-1α signaling pathway. In vitro experiments also found that silencing of betatrophin promoted glucose consumption and glycogen synthesis while inhibited inflammation. CONCLUSION Our findings concluded that silencing of betatrophin could enhance insulin sensitivity and improve histopathological morphology through the activation of GSK-3β/PGC-1α signaling pathway.
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Affiliation(s)
- Q Hao
- Department of Endocrinology, The First People's Hospital of Shangqiu, No.292 Kaixuan South Road, Shangqiu, 476100, Henan, People's Republic of China
| | - A Zheng
- College of Biology and Food, Shangqiu Normal University, Shangqiu, 476000, Henan, People's Republic of China
| | - H Zhang
- Department of Endocrinology, The First People's Hospital of Shangqiu, No.292 Kaixuan South Road, Shangqiu, 476100, Henan, People's Republic of China
| | - H Cao
- Department of Endocrinology, The First People's Hospital of Shangqiu, No.292 Kaixuan South Road, Shangqiu, 476100, Henan, People's Republic of China.
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Zheng A, Kira M, Adam RD, Papageorgiou P, Shambrook J, Abbas A, Vedwan K, Long J, Walkden M, Harden S, Peebles C, Flett AS. Characteristics and long-term outcomes of patients with reduced ejection fraction referred for adenosine stress perfusion cardiac magnetic resonance imaging. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeab090.004] [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
Funding Acknowledgements
Type of funding sources: None.
Background
Adenosine stress perfusion has been shown to be of minimal incremental benefit in distinguishing between ischaemic and non-ischaemic aetiology of severe left ventricular systolic dysfunction (LVSD) over and above that obtained from Cardiac Magnetic Resonance (CMR) with Late Gadolinium Enhancement (LGE). Stress CMR has, however, been shown to be effective in risk-stratifying LVSD patients, with ischaemia being an independent predictor of cardiovascular death or myocardial infarction (MI) and associated with higher rates of further intervention.
Purpose
Evaluate real world data from a single tertiary UK cardiac MRI centre to determine the characteristics and long-term clinical outcomes of patients with LVSD referred for stress CMR.
Methods
As part of an ongoing registry, all consenting patients with Ejection Fraction (EF) ≤40% and a completed adenosine stress perfusion CMR between January 2015 and December 2019 were included with prospective baseline data collection. All-cause mortality and cardiac hospitalisation, coronary angiography/revascularisation was determined from electronic hospital records. Outcomes were compared between the inducible ischaemia vs. no ischaemia groups, and LGE present vs. no LGE groups using chi square.
Results
The sample included 86 patients. The mean EF was 32 ± 6%. Median follow up was 3.8 years (range 41-2222 days). The indications for CMR were: 30 (35%) assess ischaemia, 35 (41%) assess LVSD aetiology and 21 (24%) LVSD assess viability.
Inducible ischemia was present in 30 (35%) patients and absent in 56 (65%). Patient characteristics and outcomes are shown in Table 1. Baseline characteristics were similar between the groups but there was a higher rate of hypertension and ischaemic heart disease in the ischaemia group. There was a non-significant difference in combined mortality and cardiac hospitalisation rates between the groups (40% vs. 27% p = 0.20).
LGE was present in 69 (80%) patients (28 with ischaemia; 41 without) and absent in 17 (20%, 2 with ischaemia, 15 without). The event rate was 23 (33%) vs. 4 (24%) between LGE vs. No LGE groups (p = 0.44). Of the 15 patients (17%) with no LGE or ischaemia; 2 died and 1 was hospitalised, there were no MI"s and no Percutaneous Coronary Intervention (PCI).
The lack of statistical difference in event rates between ischaemia and no ischaemia groups may be due to our relatively small sample size or could reflect the effectiveness of contemporary disease modifying treatment for Heart Failure with reduced EF.
Conclusion
This real-world data supports published findings that in patients with LVSD and no LGE on CMR, ischaemia is very uncommon and stress CMR is unlikely to increase diagnostic yield. Conversely, if stress CMR is performed and ischaemia is absent, incidence of subsequent angiography and revascularisation is very low, which is reassuring in clinical practice. In those patients without ischaemia and LGE, likelihood of MI is low.
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Affiliation(s)
- A Zheng
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - M Kira
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - RD Adam
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - P Papageorgiou
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - J Shambrook
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - A Abbas
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - K Vedwan
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - J Long
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - M Walkden
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - S Harden
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - C Peebles
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - AS Flett
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
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Hoeksema MA, Shen Z, Holtman IR, Zheng A, Spann NJ, Cobo I, Gymrek M, Glass CK. Mechanisms underlying divergent responses of genetically distinct macrophages to IL-4. Sci Adv 2021; 7:7/25/eabf9808. [PMID: 34134993 PMCID: PMC8208725 DOI: 10.1126/sciadv.abf9808] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 04/29/2021] [Indexed: 05/24/2023]
Abstract
Mechanisms by which noncoding genetic variation influences gene expression remain only partially understood but are considered to be major determinants of phenotypic diversity and disease risk. Here, we evaluated effects of >50 million single-nucleotide polymorphisms and short insertions/deletions provided by five inbred strains of mice on the responses of macrophages to interleukin-4 (IL-4), a cytokine that plays pleiotropic roles in immunity and tissue homeostasis. Of >600 genes induced >2-fold by IL-4 across the five strains, only 26 genes reached this threshold in all strains. By applying deep learning and motif mutation analyses to epigenetic data for macrophages from each strain, we identified the dominant combinations of lineage-determining and signal-dependent transcription factors driving IL-4 enhancer activation. These studies further revealed mechanisms by which noncoding genetic variation influences absolute levels of enhancer activity and their dynamic responses to IL-4, thereby contributing to strain-differential patterns of gene expression and phenotypic diversity.
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Affiliation(s)
- Marten A Hoeksema
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Zeyang Shen
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Bioengineering, Jacobs School of Engineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Inge R Holtman
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
- Section Molecular Neurobiology, Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - An Zheng
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Nathan J Spann
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Isidoro Cobo
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Melissa Gymrek
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Christopher K Glass
- Department of Cellular and Molecular Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA.
- Department of Medicine, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
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14
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Wang M, Shao Q, Zhu X, Wang Z, Zheng A. Efficiency and Clinical Outcomes of Moses Technology with Flexible Ureteroscopic Laser Lithotripsy for Treatment of Renal Calculus. Urol Int 2021; 105:587-593. [PMID: 33951653 DOI: 10.1159/000512054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 10/04/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of the study was to compare the efficiency and clinical outcomes of Moses contact mode (MCM) and regular dusting mode (RDM) during flexible ureteroscopic lithotripsy (FURL) for treatment of renal calculus. METHODS This retrospective analysis examined 216 patients with renal calculus who underwent FURL with MCM or RDM between March 2015 and January 2020. Stone characteristics, including size, volume, and density, were collected. Laser parameters, including laser type, laser working time, laser pause time, and foot-pedal use, were automatically recorded by the lithotripter work panel. The percentages of laser working time and laser pause time, stone fragmentation efficiency (SFE; volume/laser working time), postoperative complications, including fever and acute renal failure (ARF), stone-free rate (SFR), and the need for auxiliary procedures were determined. RESULTS There were no significant differences in preoperative demographic and stone characteristics between the MCM group and the RDM group. The MCM group had a shorter laser working time (4.99 ± 1.06 vs. 5.94 ± 0.96 min, p < 0.001) and a greater SFE (137.86 [163.78-114.38] versus 114.94 [132.06-101.34] mm3/min, p < 0.001), which shortened the overall operative time (18.39 ± 5.13 vs. 21.17 ± 6.78 min, p = 0.001). There were no differences in postoperative complications, including fever and ARF, SFR (86.8 vs. 85.3%, p = 0.743), and auxiliary procedures between the 2 groups. CONCLUSIONS Using Moses laser technology with FURL significantly reduced laser working time and increased SFE, which shortened overall operative time. Urologists should consider this new instrument for the clinical management of renal calculus.
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Affiliation(s)
- Mingqing Wang
- Department of Urology, Beijing Electric Power Hospital, SGCC (State Gird Corporation of China), Beijing, China
| | - Qiang Shao
- Department of Urology, Beijing Electric Power Hospital, SGCC (State Gird Corporation of China), Beijing, China
| | - Xiaodong Zhu
- Department of Urology, Beijing Electric Power Hospital, SGCC (State Gird Corporation of China), Beijing, China
| | - Zhiqian Wang
- Department of Urology, Beijing Electric Power Hospital, SGCC (State Gird Corporation of China), Beijing, China
| | - An Zheng
- Department of Urology, Beijing Electric Power Hospital, SGCC (State Gird Corporation of China), Beijing, China
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15
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Zheng A, Lamkin M, Qiu Y, Ren K, Goren A, Gymrek M. A flexible ChIP-sequencing simulation toolkit. BMC Bioinformatics 2021; 22:201. [PMID: 33879052 PMCID: PMC8056602 DOI: 10.1186/s12859-021-04097-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/22/2021] [Indexed: 11/17/2022] Open
Abstract
Background A major challenge in evaluating quantitative ChIP-seq analyses, such as peak calling and differential binding, is a lack of reliable ground truth data. Accurate simulation of ChIP-seq data can mitigate this challenge, but existing frameworks are either too cumbersome to apply genome-wide or unable to model a number of important experimental conditions in ChIP-seq. Results We present ChIPs, a toolkit for rapidly simulating ChIP-seq data using statistical models of key experimental steps. We demonstrate how ChIPs can be used for a range of applications, including benchmarking analysis tools and evaluating the impact of various experimental parameters. ChIPs is implemented as a standalone command-line program written in C++ and is available from https://github.com/gymreklab/chips. Conclusions ChIPs is an efficient ChIP-seq simulation framework that generates realistic datasets over a flexible range of experimental conditions. It can serve as an important component in various ChIP-seq analyses where ground truth data are needed. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-021-04097-5.
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Affiliation(s)
- An Zheng
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Michael Lamkin
- Department of Bioengineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Yutong Qiu
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.,School of Computer Science, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Kevin Ren
- Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Alon Goren
- Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.
| | - Melissa Gymrek
- Department of Computer Science and Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA. .,Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.
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16
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Zheng A, Lamkin M, Zhao H, Wu C, Su H, Gymrek M. Deep neural networks identify sequence context features predictive of transcription factor binding. NAT MACH INTELL 2021; 3:172-180. [PMID: 33796819 PMCID: PMC8009085 DOI: 10.1038/s42256-020-00282-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 12/10/2020] [Indexed: 12/11/2022]
Abstract
Transcription factors (TFs) bind DNA by recognizing specific sequence motifs, typically of length 6-12bp. A motif can occur many thousands of times in the human genome, but only a subset of those sites are actually bound. Here we present a machine learning framework leveraging existing convolutional neural network architectures and model interpretation techniques to identify and interpret sequence context features most important for predicting whether a particular motif instance will be bound. We apply our framework to predict binding at motifs for 38 TFs in a lymphoblastoid cell line, score the importance of context sequences at base-pair resolution, and characterize context features most predictive of binding. We find that the choice of training data heavily influences classification accuracy and the relative importance of features such as open chromatin. Overall, our framework enables novel insights into features predictive of TF binding and is likely to inform future deep learning applications to interpret non-coding genetic variants.
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Affiliation(s)
- An Zheng
- Department of Computer Science and Engineering, University of California San Diego, La Jolla, CA USA
| | - Michael Lamkin
- Department of Bioengineering, University of California San Diego, La Jolla, CA USA
| | - Hanqing Zhao
- Department of Biology, University of California San Diego, La Jolla, CA, USA
| | - Cynthia Wu
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA USA
| | - Hao Su
- Department of Computer Science and Engineering, University of California San Diego, La Jolla, CA USA
| | - Melissa Gymrek
- Department of Computer Science and Engineering, University of California San Diego, La Jolla, CA USA
- Department of Medicine, University of California San Diego, La Jolla, CA USA
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17
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Abstract
Bone homeostasis is continually maintained by the process of bone remodeling throughout life. Recent studies have demonstrated that Wnt signaling pathways play a fundamental role in the process of bone homeostasis and remodeling. Intracellular Wnt signaling cascades are initially triggered by a Wnt ligand-receptor complex formation. In previous studies, the blocking of Wnt ligands from different osteoblastic differentiation stages could cause defective bone development at an early stage. Osteocytes, the most abundant and long-lived type of bone cell, are a crucial orchestrator of bone remodeling. However, the role of Wnt ligands on osteocyte and bone remodeling remains unclear. In our present study, we found that, besides osteoblasts, osteocytes also express multiple Wnt ligands in the bone environment. Then, we used a Dmp1-Cre mouse line, in which there is expression in a subset of osteoblasts but mainly osteocytes, to study the function of Wnt ligands on osteocyte and bone remodeling in vivo. Furthermore, we explored the role of Wnt ligands on osteocytic mineralization ability, as well as the regulatory function of osteocytes on the process of osteoblastic differentiation and osteoclastic migration and maturity in vitro. We concluded that Wnt proteins play an important regulatory role in 1) the process of perilacunar/canalicular remodeling, as mediated by osteocytes, and 2) the balance of osteogenesis and bone resorption at the bone surface, as mediated by osteoblasts and osteoclasts, at least partly through the canonical Wnt/β-catenin signaling pathway and the OPG/RANKL signaling pathway.
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Affiliation(s)
- J H Du
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - S X Lin
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China.,5 Department of Prosthodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - X L Wu
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - S M Yang
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - L Y Cao
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - A Zheng
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - J N Wu
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
| | - X Q Jiang
- 1 Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,2 National Clinical Research Center for Oral Diseases, Shanghai, China.,3 Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai, China.,4 Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Shanghai, China
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Welling J, Roennow A, Sauvé M, Brown E, Galetti I, Gonzalez A, Portales Guiraud AP, Kennedy A, Leite C, Riggs RJ, Zheng A, Perkovic Popovic M, Gilbert A, Moros L, Sroka-Saidi K, Schindler T, Finnern H. PARE0009 COMMUNITY ADVISORY BOARD INPUT CAN MAKE LAY SUMMARIES OF CLINICAL TRIAL RESULTS MORE UNDERSTANDABLE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Under European Union (EU) Clinical Trial regulations,1clinical research sponsors (CRSs) must ensure all studies performed in the EU are accompanied by a trial summary for laypersons, published within 1 year of study completion. These lay summaries should disseminate clinical trial results in an easy-to-understand way for trial participants, patient and caregiver communities, and the general public. The European Patients Forum (EPF)2and European Patients’ Academy on Therapeutic Innovation (EUPATI)3encourage CRSs to engage with patient organisations (POs) in the development of lay summaries. This recognises the patients’ contribution to clinical research and supports the development of patient-focused material.Objectives:We share learnings from a collaboration between scleroderma POs and a CRS to create the SENSCIS® trial (NCT02597933) written and video lay summaries.Methods:A community advisory board (CAB), comprising representatives from 11 scleroderma POs covering a range of countries/regions, was formed based on the EURORDIS charter for collaboration in clinical research.4Through three structured meetings, over a seven-month period, the CAB provided advice on lay summary materials (written and video) drafted by the CRS’ Lay Summary Group (Fig. 1). At each review cycle, the CAB advice was addressed to make content more understandable and more relevant for patients and the general public.Results:The CAB advised that the existence of lay summaries is not well known in the patient community and also recommended the development of trial-specific lay summary videos to further improve understandability of the clinical trial results for the general public. Videos are a key channel of communication, enabling access to information for people with specific health needs and lower literacy levels. Following CAB advice, the CRS developed a stand-alone video entitled“What are lay summaries?”and a trial-specific lay summary video. Revisions to lay summary content (written and video) included colour schemes, iconography and language changes to make content more understandable. For videos, adjustments to animation speed, script and voiceover were implemented to improve clarity and flow of information (Fig. 2). Approved final versions of lay summary materials are publicly available on the CRS website. Translation into languages representing trial-site countries is in progress to widen access to non-English speakers and, where possible, local versions are being reviewed by the patient community.Conclusion:Structured collection and implementation of CAB advice can make lay summary materials more understandable for the patient community and wider general public.References:[1]EU. Summaries of clinical trial results for laypersons. 2018[2]EPF. EPF position: clinical trial results – communication of the lay summary. 2015[3]EUPATI. Guidance for patient involvement in ethical review of clinical trials. 2018[4]EURORDIS. Charter for Collaboration in Clinical Research in Rare Diseases. 2009Disclosure of Interests:Joep Welling Speakers bureau: Four times as a patient advocate for employees of BII and BI MIDI with a fixed amount of € 150,00 per occasion., Annelise Roennow: None declared, Maureen Sauvé Grant/research support from: Educational grants from Boehringer Ingelheim and Janssen., EDITH BROWN: None declared, Ilaria Galetti: None declared, Alex Gonzalez Consultant of: Payment made to the patient organisation (Scleroderma Research Foundation) for participation in advisory boards, Alexandra Paula Portales Guiraud: None declared, Ann Kennedy Grant/research support from: AS FESCA aisbl, Catarina Leite: None declared, Robert J. Riggs: None declared, Alison Zheng Grant/research support from: We get grants from Lorem Vascular; BI China,; Jianke Pharmaceutical Co., Ltd.; Kangjing Biological Co., Ltd.; COFCO Coca-Cola to organize national scleroderma meetings, offer patients service, holding academic meetings and other public activities, there is also a small part of the grants used to pay the workers in our organization., Consultant of: I worked as a paid consultant for BI. Pay-per-job., Speakers bureau: I was invited once to be a speaker at BI China’s internal meeting and they paid me., Matea Perkovic Popovic: None declared, Annie Gilbert Consultant of: I have worked as a paid consultant with BI International for over 3 years, since Sept 2016., Lizette Moros Employee of: Lizette Moros is an employee of Boehringer Ingelheim, Kamila Sroka-Saidi Employee of: Paid employee of Boehringer Ingelheim., Thomas Schindler Employee of: Employee of Boehringer Ingelheim Pharma, Henrik Finnern Employee of: Paid employee of Boehringer Ingelheim.
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19
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McAlpine AK, Sauve LJ, Collet JC, Goldfarb DM, Guest E, McDonald PJ, Zheng A, Srigley JA. Risk factors for cerebrospinal fluid shunt infections during an outbreak: a case-control study. J Hosp Infect 2019; 105:78-82. [PMID: 31870886 DOI: 10.1016/j.jhin.2019.12.012] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/12/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND There are few published reports of cerebrospinal fluid (CSF) shunt infection outbreaks. In 2017-2018, British Columbia Children's Hospital (BCCH) experienced an increase in CSF shunt infections co-incident with a move to new operating rooms and a change in shunt catheters used. AIMS To describe how an outbreak was detected, investigations were undertaken to determine the cause, risk factors associated with CSF shunt infection during the outbreak, and changes implemented to attempt to control the outbreak. METHODS Retrospective case-control study. Population included patients who underwent new shunt insertion or revision. Univariate logistic regression models were fitted for each of the variables. Associations with P-values <0.2 were considered of potential interest for further investigation. FINDINGS There were six cases of CSF shunt infection and 19 controls. The causative organism was different in each case. The only risk factors that met the criteria for further investigation were being a neonate at the time of surgery [odds ratio (OR) 9.0, 95% confidence interval (CI) 0.7-125.3, P=0.10] and the presence of gastrointestinal disease (OR 3.8, 95% CI 0.5-26.2, P=0.18). No association was found with the operating room used or the surgical staff. In response to the outbreak, human traffic through the operating rooms was limited, rigid adherence to the wearing of surgical masks was enforced, and return to the previous CSF shunt catheters used was implemented. CONCLUSION No modifiable risk factors were associated with CSF shunt infection. After implementation of surgical protocol changes, no further cases of CSF shunt infection linked to the outbreak were identified.
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Affiliation(s)
- A K McAlpine
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - L J Sauve
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - J C Collet
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - D M Goldfarb
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - E Guest
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - P J McDonald
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - A Zheng
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada
| | - J A Srigley
- British Columbia Children's Hospital, Vancouver, British Columbia, Canada.
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20
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Li B, Zhang J, Zhang K, Li G, Zheng A, Li J, Li X, Sun X, Chen S, Chen X, Liu L, Ye S, Liu X, Sheng Y, Ge H, Yu Z, Stchin G, Dai M, Wang J, Liu S. Chemoradiation with ENI versus IFI, High-Dose Versus Standard-Dose Radiation Therapy for Locally Advanced Esophageal Squamous Cell Carcinoma: Preliminary Results of Multicenter, Phase Ⅲ Clinical Trial (NROG 001-Northern Radiation Oncology Group of China). Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Linch E, Miller L, Looney T, Zheng A, Topacio-Hall D, Nistala G, Lowman G, Hyland F, Andersen M. PO-394 Performance of a targeted T cell receptor beta immune repertoire sequencing panel in several FFPE tissue types – a tool for interrogation of the tumour microenvironment. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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22
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Zhu XD, Zheng A, Wang ZQ, Shao Q. [Prostate Cancer Prevention Trial risk calculator for evaluating the risk of prostate cancer in the high-risk Chinese population]. Zhonghua Nan Ke Xue 2018; 24:142-146. [PMID: 30156074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE The Prostate Cancer Prevention Trial risk calculator (PCPT-RC) is an online tool for assessing the risk of prostate cancer (PCa) based on age, race, serum PSA, biopsy history, family history, and other factors. This study aimed to investigate the value, sensitivity and specificity of the PCPT-RC 2.0 in assessing the risk of PCa in the Chinese high-risk population. METHODS This study included 622 patients with the high risk of PCa characterized by high serum PSA (PSA >3 μg/L) or abnormality in digital rectal examination or imaging of the prostate. According to the results of prostate biopsy, we divided the patients into a PCa and a non-PCa group and used the PCPT-RC 2.0 for evaluation of all the cases followed by statistical analysis. RESULTS PCa was detected in 264 (42.4%) of the 622 patients, including 126 cases of high-grade malignancy. Compared with the non-PCa group, the PCa patients showed a significantly older age ([68.40 ± 7.30] vs [72.80 ± 7.20] yr, P <0.001), higher serum PSA level ([11.20 ± 7.76] vs [15.06 ± 10.65], P <0.001), and higher PCPT risk score ([37.0 ± 10.8]% vs [44.4 ± 12.6]%, P <0.001). The PCPT risk score exhibited a greater area under the ROC curve than the level of serum PSA in evaluating the risk of PCa (0.67 vs 0.61, P <0.05), but no statistically significant difference between the two in predicting the risk of high-grade malignancy (0.67 vs 0.66, P >0.05). CONCLUSIONS The PCPT risk score is valuable in predicting the risk of PCa in China, which may play a better role than the serum PSA level in screening PCa and avoid unnecessary prostate biopsy, though its advantage is not so obvious in identifying high-grade malignancy. A prediction tool needs to be established for evaluating the risk of PCa in the Chinese population.
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Affiliation(s)
- Xiao-Dong Zhu
- Department of Urology, Beijing Electric Power Hospital, Capital Medical University, Beijing 100073, China
| | - An Zheng
- Department of Urology, Beijing Electric Power Hospital, Capital Medical University, Beijing 100073, China
| | - Zhi-Qian Wang
- Department of Urology, Beijing Electric Power Hospital, Capital Medical University, Beijing 100073, China
| | - Qiang Shao
- Department of Urology, Beijing Electric Power Hospital, Capital Medical University, Beijing 100073, China
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Zheng A, Yang X, Ye X, Huang G, Wei Z, Wang J, Han X, Ni X, Meng M. Bronchopleural fistula after lung ablation: Experience in two cases and literature review. Indian J Cancer 2016; 52 Suppl 2:e41-6. [PMID: 26728673 DOI: 10.4103/0019-509x.172512] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Bronchopleural fistula (BPF) complicating lung tumor ablation is rare but severe. The purpose of this article was to study its characteristics and treatments. MATERIALS AND METHODS Two of 682 (0.3%) sessions of lung microwave ablation (MWA) were complicated with BPF and documented. Two electronic databases were searched for reported cases of BPF after lung tumor ablation. Case selection and data collection were done by 3 independent reviewers. RESULTS A 56-year-old man and a 61-year-old woman developed BPF after MWA and died. Thirteen cases (mean age 63.8, 61.5% male) of BPF with adequate information were identified from 8 articles. Of the 13 cases, 5 (38.5%) had pulmonary co-morbidity, 3 (23.1%) had a history of pulmonary surgery, 7 (53.8%) had a target tumor adjacent or abutting pulmonary pleura, and 6 (46.2%) developed severe infections. After chest tube placement, pleurodesis, endoscopic therapy, surgery, and other treatments, 12 were cured and 1 died of BPF and pneumonia. CONCLUSION BPF is a rare but severe complication of lung ablation, and the management needs a multidisciplinary and individualized treatment strategy.
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Affiliation(s)
| | | | - X Ye
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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Yang A, Yu X, Zheng A, James AT. Rebalance between 7S and 11S globulins in soybean seeds of differing protein content and 11SA4. Food Chem 2016; 210:148-55. [PMID: 27211633 DOI: 10.1016/j.foodchem.2016.04.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 03/31/2016] [Accepted: 04/20/2016] [Indexed: 11/22/2022]
Abstract
Protein content and globulin subunit composition of soybean seeds affect the quality of soy foods. In this proteomic study, the protein profile of soybean seeds with high (∼45.5%) or low (∼38.6%) protein content and with or without the glycinin (11S) subunit 11SA4 was examined. 44 unique proteins and their homologues were identified and showed that both protein content and 11SA4 influenced the abundance of a number of proteins. The absence of 11SA4 exerted a greater impact than the protein content, and led to a decreased abundance of glycinin G2/A2B1 and G5/A5A4B3 subunits, which resulted in lower total 11S with a concomitant higher total β-conglycinin (7S). Low protein content was associated with higher glycinin G3/A1aB1b and lower glycinin G4/A5A4B3. Using the proteomic approach, it was demonstrated that 11SA4 deficiency induced compensatory accumulation of 7S globulins and led to a similar total abundance for 7S+11S irrespective of protein content or 11SA4.
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Affiliation(s)
- A Yang
- CSIRO Agriculture, 306 Carmody Road, St Lucia, QLD 4067, Australia.
| | - X Yu
- CSIRO Agriculture, 306 Carmody Road, St Lucia, QLD 4067, Australia; College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - A Zheng
- CSIRO Agriculture, 306 Carmody Road, St Lucia, QLD 4067, Australia; Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - A T James
- CSIRO Agriculture, 306 Carmody Road, St Lucia, QLD 4067, Australia
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Yang X, Zhang K, Ye X, Zheng A, Huang G, Li W, Wei Z, Wang J, Han X, Ni X, Meng M, Ni Y, Yuan Q, Xing C. Artificial pneumothorax for pain relief during microwave ablation of subpleural lung tumors. Indian J Cancer 2016; 52 Suppl 2:e80-3. [PMID: 26728680 DOI: 10.4103/0019-509x.172519] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND When microwave ablation (MWA) is used for subpleural lesions, severe pain was the common side effect under the local anesthesia conditions during the procedure and postprocedure. To study the pain relief effect of artificial pneumothorax in the treatment of subpleural lung tumors with MWA. MATERIALS AND METHODS From February 2012 to October 2014, 37 patients with 40 subpleural lung tumors underwent MWA, including 17 patients of 19 sessions given artificial pneumothorax prior to MWA (group-I), and 20 patients of 21 sessions without artificial pneumothorax (group-II). Patient's pain assessment scores (10-point visual analog scale [VAS]) at during-procedure, 6, 12, 24, and 48 h after the MWA procedure and mean 24 h morphine dose were compared between the two groups. Complications of the artificial pneumothorax were also summarized. RESULTS Pain VAS were 0.53, 0.65, 1.00, 0.24, and 0.18 at during-procedure, 6, 12, 24, and 48 h for group-I and 5.53, 2.32, 2.82, 1.21, and 0.21 for group-II, respectively. Pain VAS in group I was significantly decreased at during-procedure, 6, 12, and 24 h after the MWA (P < 0.001). No statistical pain VAS difference was observed at 48 h after the MWA between the two groups (P > 0.05). The mean 24 h morphine dose was 5.00 mg in group-I and 12.63 mg in group-II (P = 0.000). "Artificial pneumothorax" related complications occurred in two patients from group-I, including one pleural effusion and one minor hemoptysis. No patient in group-I and group-II died during the procedure or in 30 days after MWA. CONCLUSION Artificial pneumothorax is a safe and effective method for pain relief during MWA of subpleural lung tumors.
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Affiliation(s)
| | | | - X Ye
- Department of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
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Kamyshova ES, Shvetsov MY, Kutyrina IM, Burdennyi AM, Zheng A, Nosikov VV, Bobkova IN. Clinical value of TNF, IL-6, and IL-10 gene polymorphic markers in chronic glomerulonephritis. TERAPEVT ARKH 2016; 88:45-50. [DOI: 10.17116/terarkh201688645-50] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhou X, Zheng A, Yin J, Chen R, Zhao X, Xu W, Cheng W, Xia T, Lin S. Context-Sensitive Spelling Correction of Consumer-Generated Content on Health Care. JMIR Med Inform 2015; 3:e27. [PMID: 26232246 PMCID: PMC4705358 DOI: 10.2196/medinform.4211] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/06/2015] [Accepted: 05/31/2015] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Consumer-generated content, such as postings on social media websites, can serve as an ideal source of information for studying health care from a consumer's perspective. However, consumer-generated content on health care topics often contains spelling errors, which, if not corrected, will be obstacles for downstream computer-based text analysis. OBJECTIVE In this study, we proposed a framework with a spelling correction system designed for consumer-generated content and a novel ontology-based evaluation system which was used to efficiently assess the correction quality. Additionally, we emphasized the importance of context sensitivity in the correction process, and demonstrated why correction methods designed for electronic medical records (EMRs) failed to perform well with consumer-generated content. METHODS First, we developed our spelling correction system based on Google Spell Checker. The system processed postings acquired from MedHelp, a biomedical bulletin board system (BBS), and saved misspelled words (eg, sertaline) and corresponding corrected words (eg, sertraline) into two separate sets. Second, to reduce the number of words needing manual examination in the evaluation process, we respectively matched the words in the two sets with terms in two biomedical ontologies: RxNorm and Systematized Nomenclature of Medicine -- Clinical Terms (SNOMED CT). The ratio of words which could be matched and appropriately corrected was used to evaluate the correction system's overall performance. Third, we categorized the misspelled words according to the types of spelling errors. Finally, we calculated the ratio of abbreviations in the postings, which remarkably differed between EMRs and consumer-generated content and could largely influence the overall performance of spelling checkers. RESULTS An uncorrected word and the corresponding corrected word was called a spelling pair, and the two words in the spelling pair were its members. In our study, there were 271 spelling pairs detected, among which 58 (21.4%) pairs had one or two members matched in the selected ontologies. The ratio of appropriate correction in the 271 overall spelling errors was 85.2% (231/271). The ratio of that in the 58 spelling pairs was 86% (50/58), close to the overall ratio. We also found that linguistic errors took up 31.4% (85/271) of all errors detected, and only 0.98% (210/21,358) of words in the postings were abbreviations, which was much lower than the ratio in the EMRs (33.6%). CONCLUSIONS We conclude that our system can accurately correct spelling errors in consumer-generated content. Context sensitivity is indispensable in the correction process. Additionally, it can be confirmed that consumer-generated content differs from EMRs in that consumers seldom use abbreviations. Also, the evaluation method, taking advantage of biomedical ontology, can effectively estimate the accuracy of the correction system and reduce manual examination time.
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Affiliation(s)
- Xiaofang Zhou
- The Department of Ophthalmology, Wuhan Central Hospital, Wuhan, China
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Wang JM, Yuan XY, Shan D, Zheng A. Styrene/Isoprene/Styrene Thermoplastic Elastomer Prepared by Anionic Bulk Polymerization in a Twin-Screw Extruder. INT POLYM PROC 2015. [DOI: 10.3139/217.2884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
In this study, a styrene/isoprene/styrene (SIS) triblock copolymer was synthesized in an intermeshing, co-rotating, twin-screw extruder. N-butyl lithium was used as the initiator. The styrene and isoprene monomer as well as 1,2-dibromoethane were sequentially added into the extruder. The weight content of isoprene in this copolymer was above 60%. Gel permeation chromatography (GPC) results showed that the polystyrene in the copolymer chains was mainly comprised of only one long block. Dynamic mechanical analysis (DMA) and transmission electron microscopy (TEM) showed that the polystyrene phase transferred from larger numbers of small microdomains to a continuous aggregation after the coupling reaction. As a result, the tensile stress and ultimate elongation was significantly improved, similar to the commercial product. Traditionally, SIS has only been synthesized by solution polymerization. The present work offers the capacity to synthesize it with very little or no solvent. This method fits the environmentally friendly trend.
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Affiliation(s)
- J.-M. Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education , East China University of Science and Technology, Shanghai , PRC
| | - X.-Y. Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education , East China University of Science and Technology, Shanghai , PRC
| | - D. Shan
- Key Laboratory for Ultrafine Materials of Ministry of Education , East China University of Science and Technology, Shanghai , PRC
| | - A. Zheng
- Key Laboratory for Ultrafine Materials of Ministry of Education , East China University of Science and Technology, Shanghai , PRC
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Vorburger TV, Yen J, Song JF, Thompson RM, Renegar TB, Zheng A, Tong M. The Second National Ballistics Imaging Comparison (NBIC-2). J Res Natl Inst Stand Technol 2015; 119:644-673. [PMID: 26601051 PMCID: PMC4487285 DOI: 10.6028/jres.119.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/26/2014] [Indexed: 06/04/2023]
Abstract
In response to the guidelines issued by the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB-International) to establish traceability and quality assurance in U.S. crime laboratories, NIST and the ATF initiated a joint project, entitled the National Ballistics Imaging Comparison (NBIC). The NBIC project aims to establish a national traceability and quality system for ballistics identifications in crime laboratories utilizing ATF's National Integrated Ballistics Information Network (NIBIN). The original NBIC was completed in 2010. In the second NBIC, NIST Standard Reference Material (SRM) 2461 Cartridge Cases were used as reference standards, and 14 experts from 11 U.S. crime laboratories each performed 17 image acquisitions and correlations of the SRM cartridge cases over the course of about half a year. Resulting correlation scores were collected by NIST for statistical analyses, from which control charts and control limits were developed for the proposed quality system and for promoting future assessments and accreditations for firearm evidence in U.S. forensic laboratories in accordance with the ISO 17025 Standard.
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Ye X, Li W, Yang X, Li Y, Huang G, Wang J, Han X, Ni X, Wei Z, Zheng A, Meng M. Microwave ablation as palliative treatment of locally recurrent colorectal cancer. Indian J Cancer 2015; 52 Suppl 2:e61-3. [PMID: 26728676 DOI: 10.4103/0019-509x.172515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ye X, Han X, Yang X, Liu Q, Huang G, Wang J, Li W, Zheng A, Ni Y, Men M. Computed tomography-guided percutaneous microwave ablation of patients 75 years of age and older with early-stage nonsmall cell lung cancer. Indian J Cancer 2015; 52 Suppl 2:e56-60. [PMID: 26728675 DOI: 10.4103/0019-509x.172514] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Shvetsov MY, Zheng A, Kozlovskaya LV, Serova AG, Travkina EV, Mukhin NA. Urinary excretion of angiogenesis regulatory factors and renal injury markers in chronic glomerulonephritis: Significance in the assessment of progression. TERAPEVT ARKH 2015; 87:75-82. [DOI: 10.17116/terarkh201587675-82] [Citation(s) in RCA: 3] [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: 12/17/2022]
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33
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Wang X, Li H, Zheng A, Yang L, Liu J, Chen C, Tang Y, Zou X, Li Y, Long J, Liu J, Zhang Y, Feng Z. Mitochondrial dysfunction-associated OPA1 cleavage contributes to muscle degeneration: preventative effect of hydroxytyrosol acetate. Cell Death Dis 2014; 5:e1521. [PMID: 25393477 PMCID: PMC4260731 DOI: 10.1038/cddis.2014.473] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/27/2014] [Accepted: 10/06/2014] [Indexed: 01/15/2023]
Abstract
Mitochondrial dysfunction contributes to the development of muscle disorders, including muscle wasting, muscle atrophy and degeneration. Despite the knowledge that oxidative stress closely interacts with mitochondrial dysfunction, the detailed mechanisms remain obscure. In this study, tert-butylhydroperoxide (t-BHP) was used to induce oxidative stress on differentiated C2C12 myotubes. t-BHP induced significant mitochondrial dysfunction in a time-dependent manner, accompanied by decreased myosin heavy chain (MyHC) expression at both the mRNA and protein levels. Consistently, endogenous reactive oxygen species (ROS) overproduction triggered by carbonyl cyanide 4-(trifluoromethoxy) phenylhydrazone (FCCP), a mitochondrial oxidative phosphorylation inhibitor, was accompanied by decreased membrane potential and decreased MyHC protein content. However, the free radical scavenger N-acetyl-L-cysteine (NAC) efficiently reduced the ROS level and restored MyHC content, suggesting a close association between ROS and MyHC expression. Meanwhile, we found that both t-BHP and FCCP promoted the cleavage of optic atrophy 1 (OPA1) from the long form into short form during the early stages. In addition, the ATPase family gene 3-like 2, a mitochondrial inner membrane protease, was also markedly increased. Moreover, OPA1 knockdown in myotubes was accompanied by decreased MyHC content, whereas NAC failed to prevent FCCP-induced MyHC decrease with OPA1 knockdown, suggesting that ROS might affect MyHC content by modulating OPA1 cleavage. In addition, hydroxytyrosol acetate (HT-AC), an important compound in virgin olive oil, could significantly prevent t-BHP-induced mitochondrial membrane potential and cell viability loss in myotubes. Specifically, HT-AC inhibited t-BHP-induced OPA1 cleavage and mitochondrial morphology changes, accompanied by improvement on mitochondrial oxygen consumption capacity, ATP productive potential and activities of mitochondrial complex I, II and V. Moreover, both t-BHP- and FCCP-induced MyHC decrease was sufficiently inhibited by HT-AC. Taken together, our data provide evidence indicating that mitochondrial dysfunction-associated OPA1 cleavage may contribute to muscle degeneration, and olive oil compounds could be effective nutrients for preventing the development of muscle disorders.
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Affiliation(s)
- X Wang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - H Li
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - A Zheng
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - L Yang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J Liu
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - C Chen
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Y Tang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - X Zou
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Y Li
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - J Liu
- 1] Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China [2] Tianjin Key Laboratory of Exercise Physiology & Sports Medicine, Tianjin University of Sport, Tianjin 300381, China
| | - Y Zhang
- Tianjin Key Laboratory of Exercise Physiology & Sports Medicine, Tianjin University of Sport, Tianjin 300381, China
| | - Z Feng
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
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Wu S, Zhang X, Xia B, Luo H, Li J, Zheng A, Xie C, Wang L, Hu W, Lian X, Du D, Chen M, Bian X, Tan B, Hui Z, Zhao F, Tian Z, Liu H, Huang K, Hu J. Interim Results of a Randomized Controlled Phase III Trial of Elective Nodal Irradiation Plus Erlotinib Combined with Chemotherapy for Esophageal Squamous Cell Carcinoma (Nct00686114). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.5] [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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35
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Li X, Yi R, Liu B, Zheng A, Yu X, Yi P. Synthesis of New Spiro Isoxazoline-Pyrrolizinone Derivativesvia1,3-Dipolar Cycloaddition of Nitrile Oxide. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1610] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- X. Li
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - R. Yi
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - B. Liu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - A. Zheng
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - X. Yu
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
| | - P. Yi
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education, Hunan Province College Key Laboratory of QSAR/QSPR, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan Hunan 411201 China
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Zheng A, Yang BY, Wu SP, Wang XH, Chen XQ. [Road dust loading and chemical composition at major cities in Fujian Province]. Huan Jing Ke Xue 2013; 34:1901-1907. [PMID: 23914546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A total of 57 road dust and 16 urban soil samples were collected from four cities, Xiamen, Zhangzhou, Quanzhou and Putian in Fujian Province, China. Twenty-six elements, eight water soluble ions, organic carbon and elemental carbon in the fraction of particulate diameter less than 2.5 microm (PM2.5) derived through a suspension chamber were analyzed. The average loading of road dust with diameter less than 100 microm in the four cities ranged from 6.99 g x m(-2) to 10.11 g x m(-2), while the loading of PM2.5 ranged from 4.0 mg x m(-2) to 12.5 mg x m(-2). Both the soil and road dust samples were characterized with much higher concentrations of Si, Ca, Al, Fe and K. But for the anthropogenic elements such as Cu, Pb, Zn,Cr and Ti, much lower levels were found in the soil PM2.5, than those in the road dust PM2.5. Significantly higher levels of NH4+, NO3- and SO4(2-) were found in the road dust PM2.5 from Zhangzhou in comparison with those from other cities in this study. The calcium ion (Ca2+) content was significantly positively correlated with the Mg2+ content in the road dust PM2.5 from Xiamen, Zhangzhou and Quanzhou. The levels of organic carbon (OC) in the road dust PM2.5 in these four cities were higher than those reported in Ji'nan, Shijiazhuang and Beijing while the levels of elemental carbon (EC) were all lower than those in the urban road dust from Beijing, Significant positive correlation between EC and OC was found in samples from Quanzhou and Putian, suggesting the same and/or similar sources. The result of mass balance indicated that higher percentage compositions were soil and OM in both Quanzhou and Putian. Based on the cluster analysis, the 57 road dust samples were divided into four types: influenced by atmospheric deposition, influenced by soil dust, influenced by atmospheric deposition and soil dust, and influenced by soil and construction dust.
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Affiliation(s)
- An Zheng
- College of the Environment and Ecology, Xiamen University, Xiamen 361005, China.
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Yang BY, Huang XX, Zheng A, Liu BL, Wu SP. [Compositions of organic acids in PM10 emission sources in Xiamen urban atmosphere]. Huan Jing Ke Xue 2013; 34:8-14. [PMID: 23487911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The possible organic acid emission sources in PM10 in Xiamen urban atmosphere such as cooking, biomass burning, vehicle exhaust and soil/dust were obtained using a re-suspension test chamber. A total of 15 organic acids including dicarboxylic acids, fatty acids and aromatic acids were determined using GC/MS after derivatization with BF3/n-butanol. The results showed that the highest total concentration of 15 organic acids (53%) was found in cooking emission and the average concentration of the sum of linoleic acid and oleic acid was 24% +/- 14%. However, oxalic acid was the most abundant species followed by phthalic acid in gasoline vehicle exhaust. The ratios of adipic to azelaic acid in gasoline combustion emissions were significantly higher than those in other emission sources, which can be used to qualitatively differentiate anthropogenic and biological source of dicarboxylic acids in atmospheric samples. The ratios of malonic to succinic acid in source emissions (except gasoline generator emissions) were lower (0.07-0.44) than ambient PM10 samples (0.61-3.93), which can be used to qualitatively differentiate the primary source and the secondary source of dicarboxylic acids in urban PM10.
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Affiliation(s)
- Bing-Yu Yang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China.
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Xue Y, Guan Y, Zheng A, Wang H, Xiao H. Synthesis and Characterization of Ciprofloxacin Pendant Antibacterial Cationic Polymers. Journal of Biomaterials Science, Polymer Edition 2012; 23:1115-28. [DOI: 10.1163/092050611x576639] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Y. Xue
- a Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada; Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Y. Guan
- b Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - A. Zheng
- c Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - H. Wang
- d Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - H. Xiao
- e Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
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Liu BL, Wu SP, Yang BY, Zheng A, Wang XH. [Uncertainty analysis of gas/particle partitioning of atmospheric polycyclic aromatic hydrocarbons]. Huan Jing Ke Xue 2011; 32:2794-2799. [PMID: 22165253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
During the period from August 10, 2010 through August 14, 2010, particle and gas phase PAHs were collected and analyzed using double filters plus PUFs (Poly Urethane Foam) sampling system, and the uncertainties of gas/particle partitioning coefficients of PAHs were investigated using the propagation of errors formulas. The results showed that low-molecular weight PAHs such as naphthalene, acenaphthylene, acenaphthene and fluorene possessed the strong breakthrough capacity with the breakthrough rates close to 50% in double PUF cartridges. The corrected K(p) values based on the sorption of PAHs to the primary filter were more than an order of magnitude higher than those without sorption correction for naphthalene, acenaphthylene and acenaphthene. The uncertainties for all the 19 PAHs ranged from 28.14% to 50.37% based on the standard error propagation formulas, with higher values for volatile and involatile PAHs and lower values for semi-volatile PAHs. The results also showed that the uncertainties of K(p) were mainly contributed from the measurements of particle (average variance contribution was 77.9%) and gas (average variance contribution was 22.0%) phase PAHs while the contributions of total suspended particle were ignorable. Thus, getting more accurate data for gaseous PAHs using an appropriate sampling system is the key to increase the accuracy of gas/particle partitioning coefficients of PAHs.
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Affiliation(s)
- Bi-Lian Liu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China.
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40
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Yao M, Zheng A, Tanaka I. Structure analysis of eukaryotic translation initiation factor complex 5B-1A. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311082511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Tchebotareva N, Bobkova I, Kozlovskaya L, Li O, Plaisier E, Terrier B, Lacraz A, Bridoux F, Huart A, Marie I, Launay D, Hummel A, Saint-Martin L, Bonnet F, Belenotti P, Kahn JE, Hinschberger O, Rullier P, Cacoub P, Casian A, Szpirt W, Jayne D, Walsh M, Haris A, Polner K, Aranyi J, Braunitzer H, Meran Z, Kaszas I, Mazanowska O, Koscielska-Kasprzak K, Kaminska D, Penar J, Zabinska M, Dziemianko I, Krajewska M, Klinger M, Marco H, Corica M, Picazo M, Arce Y, Llobet JM, Diaz M, Ballarin J, Kuroki A, Akizawa T, Papasotiriou M, Kalliakmani P, Huang L, Gerolymos M, Goumenos DS, Johnson TS, Ogahara S, Abe Y, Ito K, Watanabe M, Saito T, Saito T, Watanabe M, Ito K, Abe Y, Ogahara S, Nesen A, Topchii I, Semenovylh P, Galchinskaya V, Bantis C, Heering P, Kouri NM, Schwandt C, Rump LC, Ivens K, Nagasawa Y, Iio K, Fukuda S, Date Y, Iwatani H, Yamamoto R, Horii A, Inohara H, Imai E, Ohno H, Rakugi H, Rakugi Y, Sahin OZ, Gibyeli Genek D, Alkan Tasli F, Yavas H, Gurses S, Yeniay P, Uzum A, Ersoy R, Cirit M, Christou D, Molyneux K, Peracha J, Feehally J, Smith AC, Barratt J, Yamamoto R, Nagasawa Y, Shoji T, Katakami N, Ohtoshi K, Hayaishi-Okano R, Yamasaki Y, Yamauchi A, Tsubakihara Y, Imai E, Rakugi H, Isaka Y, Faria B, Vidinha J, Pego C, Garrido J, Lemos S, Lima C, Sorbo G, Lorga E, Sousa T, Yavas HH, Sahin OZ, Ozen KP, Gibyeli Genek D, Ersoy R, Alkan Tasli F, Yucel O, Cirit M, Wada Y, Ogata H, Yamamoto M, Ito H, Kinugasa E, Lundberg S, Lundahl J, Gunnarsson I, Jacobson S, Camilla R, Loiacono E, Dapra V, Morando L, Conrieri M, Bianciotto M, Bosetti FM, Gallo R, Peruzzi L, Amore A, Coppo R, Jeong K, Kim Y, Lee TW, Lee SH, Moon JY, Lee S, Ihm C, Komatsu H, Fujimoto S, Kikuchi M, Sato Y, Kitamura K, Sulikowska B, Johnson R, Grajewska M, Donderski R, Odrowaz-Sypniewska G, Manitius J, Amore A, Camilla R, Morando L, Peruzzi L, Rollino C, Quarello F, Colla L, Segoloni G, Caramello E, Cravero R, Quaglia M, Stratta P, Mazzucco G, Coppo R, Coppo R, Grcevska L, Petrusevska G, Nikolov V, Polenakovic M, Lee KW, Ham YR, Jang WI, Jung JY, Jang DS, Chung S, Choi DE, Na KR, Shin YT, Sulikowska B, Johnson R, Grajewska M, Donderski R, Odrowaz-Sypniewska G, Manitius J, Pasquariello A, Innocenti M, Pasquariello G, Mattei P, Colombini E, Ricchiuti G, Sami N, Cupisti A, Rocchetti MT, Di Paolo S, Tamma G, Lasorsa D, Suriano IV, D'Apollo A, Papale M, Mastrofrancesco L, Grandaliano G, Svelto M, Valenti G, Gesualdo L, Wang C, Li Y, Jia N, Fan J, Vigotti FN, Daidola G, Colla L, Besso L, Segoloni GP, Rocchetti MT, Papale M, Di Paolo S, Vocino G, Suriano IV, D'Apollo A, Grandaliano G, Gesualdo L, Berthoux F, Mohey H, Laurent B, Mariat C, Afiani A, Thibaudin L, Rivera F, Segarra A, Praga M, Vozmediano C, Rivera F, Lopez JM, Hernandez D, Pesickova S, Rysava R, Lenicek M, Potlukova E, Jancova E, Vitek L, Honsova E, Zavada J, Svarcova J, Kalousova M, Trendelenburg M, Tesar V, Li X, Ren H, Zhang W, Pan X, Zhang Q, Chen X, Xu Y, Shen P, Chen N, Hruskova Z, Mareckova H, Svobodova B, Jancova E, Bednarova V, Rysava R, Tesar V, Bobrova L, Kozlovskaya N, Khafizova E, Meteleva N, Shakhnova E, Alsuwaida A, Hussain S, Alghonaim M, AlOudah N, Ullah A, Kfoury H, Lorusso P, Bottai A, Cipollini I, Giorgetti M, Barsotti G, Goplani K, Kaswan K, Gera D, Patel H, Gumber M, Shah P, Vanikar A, Trivedi H, Gluhovschi C, Gluhovschi G, Potencz E, Lazar E, Trandafirescu V, Petrica L, Velciov S, Bozdog G, Bob F, Gadalean F, Vernic C, Cioca D, Bantis C, Heering P, Stangou M, Kouri NM, Schwandt C, Memmos D, Rump LC, Ivens K, Tofik R, Rippe B, Torffvit O, Bakoush O, Silska M, Lipkowska K, Warzywoda A, Soltysiak J, Blumczynski A, Musielak A, Ostalska-Nowicka D, Zachwieja J, Spartalis M, Stangou M, Pliakos K, Oikonomidou D, Pantzaki A, Rizopoulou E, Efstratiadis G, Memmos D, Okino VT, Moyses Neto M, Silva GEB, Vieira Neto O, Romao EA, Coelho EB, Dantas M, Liakou H, Stangou M, Ekonomidou D, Pantzaki A, Patinakis P, Sigounas V, Efstratiadis G, Memmos D, Shvetsov M, Bobkova I, Zheng A, Li O, Chebotareva N, Kamyshova E, Rudenko T, Gelpi R, Navarro I, Ngango L, Poveda R, Goma M, Torras J, Grinyo JM, Fulladosa X, Wang Y, Ivany J, Jardine M, Zhong F, Wang W, Ren H, Xie Y, Huang Q, Chen N, Chiappini MG, Di Girolamo M, Grosso A, Muzi L, Panetta V, Khafizova E, Kozlovskaya N, Bobrova L, Bobkova I, Avdonin P, Gluhovschi C, Gluhovschi G, Potencz E, Lazar E, Trandafirescu V, Petrica L, Velciov S, Bozdog G, Bob F, Gadalean F, Vernic C, Cioca D, Ito M, Kimachi M, Nishio S, Koike T, Choi H, Cho AJ, Jang HR, Lee JE, Huh W, Kim DJ, Oh HY, Kim YG. Clinical Nephrology: primary and secondary glomerulonephritis. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
OBJECTIVE The aim of the study was to determine the efficacy of uterine artery embolisation (UAE) combined with local methotrexate (MTX) for the treatment of caesarean scar pregnancy, compared with other traditional modalities, and to investigate the complications associated with this treatment. DESIGN A retrospective cohort study. SETTING A large obstetrics and gynaecology unit within a university hospital in China. SAMPLE Women who were diagnosed with a caesarean scar pregnancy between January 2003 and December 2008, and who had informative case records, were included in the study. METHODS We reviewed the results for all women who received one of three treatments: dilation and curettage (D&C) (11 patients; group A), systemic MTX (17 patients; group B), and UAE and local MTX (38 patients; group C). MAIN OUTCOME MEASURES The main outcome measures were success rate, blood loss, time for beta human chorionic gonadotrophin (beta-hCG) to decline to normal values, and the duration of hospital stay. Success was defined as a complete recovery with no severe complications and with the preservation of fertility. RESULTS A total of 66 women diagnosed with caesarean scar pregnancy between January 2003 and December 2008 were identified, and their data were analysed. The success rate in group C was significantly higher than that in groups A and B after adjusting for beta-hCG level (89.5 versus 27.3 and 58.8%, respectively; P < 0.001). The mean blood loss in group C was lower than in the other two groups (240.5 versus 855.5 and 639.4 ml, respectively; P = 0.008 and 0.009, respectively). The average time for beta-hCG to decline to normal values was significantly shorter in group C than in group B (28.1 versus 44.3 days; P = 0.021). A significantly shorter duration of hospital stay was observed in group C compared with group B (12.5 versus 22.0 days; P = 0.024). CONCLUSIONS UAE combined with local MTX is of benefit to women wishing to preserve fertility, and is suitable for use as the primary treatment for caesarean scar pregnancy.
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Affiliation(s)
- X-Y Yang
- Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
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Affiliation(s)
- X-Y Yang
- Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
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Wang H, Xi M, Zhang J, Chen Y, Zheng A. O987 Analysis of clinic staging and lymph-nodes metastasis in 508 patients of cervical cancer. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61360-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zheng A, Sakari R, Cheng SM, Hietikko A, Moilanen P, Timonen J, Fagerlund KM, Kärkkäinen M, Alèn M, Cheng S. Effects of a low-frequency sound wave therapy programme on functional capacity, blood circulation and bone metabolism in frail old men and women. Clin Rehabil 2009; 23:897-908. [DOI: 10.1177/0269215509337273] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: To evaluate the effects of a low-frequency sound wave therapy programme on functional capacity, blood circulation and bone metabolism of the frail elderly. Design: Single-blind, randomized, controlled trial. Setting: Two senior service centres. Subjects: Forty-nine volunteers (14 males and 35 females) aged 62—93 years with up to 12 diagnosed diseases were allocated in either the intervention group (n = 30) or control group (n = 19). Intervention: The intervention group underwent sound wave therapy, 3—5 times a week for 30 minutes per session over a period of 6 months. The control group received no intervention. Main measurements: Blood pressure, functional capacity, mobility, bone density, biochemical markers, isometric muscle strength, balance, and skin surface temperature. Results: Compared with the control group, the intervention group’s mobility and the amount of self-reported kilometres walked per week increased by 3 km (P<0.05), while levels of cholesterol (4.97 (0.72) to 4.52 (0.65) mmol/L, P =0.019), low-density lipoprotein (2.82 (0.72) to 2.45 (0.61) mmol/L, P =0.022), bone markers of total osteocalcin (11.0 (6.5) to 10.3 (5.9) ng/mL, P =0.048)) and tartrate-resistant acid phosphatase isoform 5b (2.50 (1.0) to 2.41 (1.1) IU/L, P =0.021)) decreased. The average skin surface temperature was significantly higher during active sessions at the end of the intervention than in the beginning (P = 0.004). No change was found during placebo sessions. Conclusions: Low-frequency sound wave therapy may have the potential to promote well-being of frail elderly subjects via improved functional capacity, especially in subjects who are too frail to undertake exercise.
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Affiliation(s)
- A. Zheng
- Department of Health Sciences, University of Jyväskylä, Jyväskylä
| | - R. Sakari
- Department of Health Sciences, University of Jyväskylä, Jyväskylä
| | - SM Cheng
- Department of Health Sciences, University of Jyväskylä, Jyväskylä,
| | - A. Hietikko
- Department of Health Sciences, University of Jyväskylä, Jyväskylä
| | - P. Moilanen
- Department of Physics, University of Jyväskylä, Jyväskylä
| | - J. Timonen
- Department of Physics, University of Jyväskylä, Jyväskylä
| | - KM Fagerlund
- Department of Cell Biology and Anatomy, University of Turku, Turku
| | - M. Kärkkäinen
- Department of Health Sciences, University of Jyväskylä
| | - M. Alèn
- Department of Medical Rehabilitation, Oulu University Hospital and Institute of Health Sciences, University of Oulu, Oulu
| | - S. Cheng
- Department of Health Sciences, University of Jyväskylä, Jyväskylä, Department of Orthopaedics and Traumatology, Kuopio University Hospital, Kuopio, Finland
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Pakstis LM, Dunkers JP, Zheng A, Vorburger TV, Quinn TP, Cicerone MT. Evaluation of polydimethylsiloxane modification methods for cell response. J Biomed Mater Res A 2009; 92:604-14. [PMID: 19235219 DOI: 10.1002/jbm.a.32402] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Many methods exist in the literature to modify surfaces with extracellular matrix (ECM) proteins prior to cell seeding. However, there are few studies that systematically characterize and compare surface properties and cell response results among modification methods that use different bonding mechanisms. In this work, we compare cell response and physical characterization results from fibronectin or laminin attached to polydimethylsiloxane (PDMS) elastomer surfaces by physical adsorption, chemisorption, and covalent attachment to determine the best method to modify a deformable surface. We evaluate modification methods based on completeness and uniformity of coverage, surface roughness, and hydrophilicity of attached ECM protein. Smooth muscle cell adhesion, proliferation, morphology, and phenotype were also evaluated. We found that chemisorption methods resulted in higher amounts of protein attachment than physical adsorption and covalent bonding of the ECM proteins. Cell response to protein-modified surfaces was similar with respect to cell adhesion, area, aspect ratio, and phenotype. When all the data are considered, the chemisorption methods, most notably silane_70, provide the best surface properties and highest cell proliferation.
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Affiliation(s)
- L M Pakstis
- Polymers Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
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Huang HP, Zhao JP, Chen SG, Che CH, Zheng A, Jiang F. [Evaluation of brain dysfunction in chronic anoxic encephalopathy with evoked potentials]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2008; 24:301-305. [PMID: 21141588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM To explore the relationship between evoked potentials (EPs) and chronic anoxic brain damage by chronic intermittent hypoxia (CIH), and provide theory evidence for diagnosis and treatment of anoxic encephalopathy. METHODS BAEP and SLSEP were recorded in rat model with CIH (hypoxia group) and rat with normoxia (normal group). Morris water maze was used to observe learning and memory ability. Immunohistochemical method was used to investigate the expression levels of caspase-3 in brain tissue. RESULTS The peak latency (PL) of wave I, III, V and the interpeak latency (IPL) of wave III - V, I - V in BAEP in hypoxia group were much longer than that of in normal group (P < 0.05). The PL of wave N1, P1 of SEP in hypoxia group were much longer than that of in normal group (P < 0.05). In the water mase test, the escape latency (EL) of hypoxia group was much longer than normal group (P < 0.01). The number of caspase-3 positive cells in hypoxia group was much larger than that of in normal group (P < 0.05). There was a positive correlation among BAEP, SLSEP, the number of caspase-3 positive neuron and EL of water mase. CONCLUSION The alteration of BAEP and SLSEP has an apparent correlation with chronic anoxic brain damage. This provides theory evidence for diagnosis and treatment of anoxic encephalopathy.
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Affiliation(s)
- Hua-Pin Huang
- Department of Neurology, Union Hospital, Fujian Medical University, Fuzhou 350001, China.
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Abstract
Tamoxifen (Tam) is widely used in chemotherapy of estrogen receptor-positive breast cancer. It inhibits proliferation and induces apoptosis of breast cancer cells by estrogen receptor-dependent modulation of gene expression, but recent reports have shown that Tam (especially at pharmacological concentrations) has also rapid nongenomic effects. Here we studied the mechanisms by which Tam exerts rapid effects on breast cancer cell viability. In serum-free medium 5-7 microM Tam induced death of MCF-7 and MDA-MB-231 cells in a time-dependent manner in less than 60 min. This was associated with release of mitochondrial cytochrome c, a decrease of mitochondrial membrane potential and an increase in production of reactive oxygen species (ROS). This suggests that disruption of mitochondrial function has a primary role in the acute death response of the cells. Accordingly, bongkrekic acid, an inhibitor of mitochondrial permeability transition, was able to protect MCF-7 cells against Tam. Rapid cell death induction by Tam was not associated with immediate activation of caspase-9 or cleavage of poly (ADP-ribose) polymerase. It was not blocked by the caspase inhibitor z-Val-Ala-Asp-fluoromethylketone either. Diphenylene ionodium (DPI), an inhibitor of NADPH oxidase, was able to prevent Tam-induced cell death but not cytochrome c release, which suggests that ROS act distal to cytochrome c. The pure antiestrogen ICI 182780 (1 microM) could partly oppose the effect of Tam in estrogen receptor positive MCF-7 cells, but not in estrogen receptor negative MDA-MB-231 cells. Pre-culturing MCF-7 cells in the absence of 17beta-estradiol (E(2)) or in the presence of a low Tam concentration (1 microM) made the cells even more susceptible to rapid death induction by 5 or 7 microM Tam. This effect was associated with decreased levels of the anti-apoptotic proteins Bcl-X(L) and Bcl-2. In conclusion, our results demonstrate induction of a rapid mitochondrial cell death program in breast cancer cells at pharmacological concentrations of Tam, which are achievable in tumor tissue of Tam-treated breast cancer patients. These mechanisms may contribute to the ability of Tam therapy to induce death of breast cancer cells.
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Affiliation(s)
- A Kallio
- Department of Anatomy and Medicity Research Laboratory, Institute of Biomedicine, University of Turku, Tykistökatu 6A, 20520 Turku, Finland.
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Liu N, DU HW, Chen RH, Zheng A, Huang HP, Wu ZH. [The effect of interleukin-10 on neurocyte apoptosis in cerebral ischemia in rats]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2007; 23:498-500. [PMID: 17553341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
AIM To investigate the effect of interleukin-10 on neurocyte apoptosis in cerebral ischemia in rats. METHODS 36 adult male Sprague-Dawley rats were randomly assigned into 3 groups: sham operation group, middle cerebral artery occlusion(MCAO) group and MCAO+interleukin-10 treatment group. Terminal deoxynucleotidyl transferase-mediated biotinylated UTP nick end labeling (TUNEL) staining was used to detect in situ cell apoptosis, immunohistochemical staining and RT-PCR were used to detect the expression of proapoptotic gene Fas, Fas ligand (FasL) and caspase-3 in peri-infarct, respectively. RESULTS Cerebral ischemia significantly induced neurocyte apoptosis and upregulated the expression of Fas, FasL and caspase-3, repcetively (P<0.05). IL-10 treatment significantly inhibited neurocyte apoptosis, and suppressed the expression of proapoptotic gene FasL and caspase-3, repcetively (P<0.05), but had no obvious effect on Fas expression (P>0.05). CONCLUSION IL-10 can suppress neurocyte apoptosis in cerebral ischemia, whose mechanisms seemed related to inhibiting the expression of proapoptotic gene FasL and caspase-3.
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Affiliation(s)
- Nan Liu
- Department of Neurology, Union Hospital, Fujian Medical University, Fuzhou 350001, China
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Huang HP, Che CH, Zheng A. [The effects of aging on high frequency oscillations of median nerve somatosensory-evoked potentials in human]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2005; 21:469-470. [PMID: 21180178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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