151
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Liu DM, Li J, Wan BN, Lu Z, Wang LS, Jiang L, Lu CH, Huang J. Performance of current measurement system in poloidal field power supply for Experimental Advanced Superconducting Tokamak. Rev Sci Instrum 2016; 87:11D842. [PMID: 27910616 DOI: 10.1063/1.4963868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
As one of the core subsystems of the Experimental Advanced Superconducting Tokamak (EAST), the poloidal field power system supplies energy to EAST's superconducting coils. To measure the converter current in the poloidal field power system, a current measurement system has been designed. The proposed measurement system is composed of a Rogowski coil and a newly designed integrator. The results of the resistor-inductor-capacitor discharge test and the converter equal current test show that the current measurement system provides good reliability and stability, and the maximum error of the proposed system is less than 1%.
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Affiliation(s)
- D M Liu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - J Li
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Z Lu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - L S Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - L Jiang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - C H Lu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - J Huang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
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152
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Zhang Z, Li Z, Yu Q, Wu C, Lu Z, Zhu F, Zhang H, Liao M, Li T, Chen W, Xian X, Tan A, Mo Z. The prevalence of and risk factors for prostatitis-like symptoms and its relation to erectile dysfunction in Chinese men. Andrology 2016; 3:1119-24. [PMID: 26769668 DOI: 10.1111/andr.12104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/14/2015] [Accepted: 08/12/2015] [Indexed: 11/29/2022]
Abstract
The aim of this study was to describe the prevalence of and risk factors for prostatitis-like symptoms and its relation to erectile dysfunction (ED) among southern Chinese men. Data were collected from 2790 men attending the Fangchenggang Area Male Healthy and Examination Survey from September 2009 to December 2009. The prostatitis-like symptoms were assessed by the NIH Chronic Prostatitis Symptom Index and ED was assessed using the 5-item International Index of Erectile Function. Lifestyle and demographic characteristics were obtained through a questionnaire. Prevalence of prostatitis-like symptoms was 12.4% among 2790 Chinese men aged 20-84 years. In smokers who smoked ≥20 cigarettes per day (age-adjusted OR = 1.29; 95% CI = 1.00-1.66; p = 0.04), physical inactivity (age-adjusted OR = 1.31; 95% CI = 1.03-1.66; p = 0.02) was a significant risk factor for prostatitis-like symptoms. Alcohol consumption (daily drinking) also was a risk factor for prostatitis-like symptoms, although the differences were not statistically significant (age-adjusted OR = 1.36; 95% CI = 0.96-1.92; p = 0.07). Those with diabetes may also be at higher risk for prostatitis-like symptoms (age-adjusted OR = 1.37; 95% CI = 0.85-2.21; p = 0.19). In addition, men with ED were more likely to have had prostatitis-like symptoms (age-adjusted OR = 1.86; 95% CI = 0.47-2.36; p < 0.0001), and the ORs increased with increasing severity of ED status (mild ED, mild to moderate ED, and moderate to severe ED were 1.57, 2.62, and 3.24, respectively. Test for trend, p = 0.0001). Our results show that prostatitis-like symptoms are prevalent in Southern China affecting men of all ages. Smoking, drinking, lack of physical activity, and elevated plasma glucose level were associated with an increased risk of prostatitis-like symptoms. In addition, our results reveal that ED accounted for a large proportion (61.5%) among men with prostatitis-like symptoms; we also confirm the magnitude of ED associated with prostatitis-like symptoms. Thus, interventions to evaluate and improve ED might help ameliorate prostatitis-like symptoms and vice versa.
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Affiliation(s)
- Z Zhang
- Urology Department, Minzu Hospital of Guangxi Zhuang Autonomous Region, Affiliated Minzu Hospital of Guangxi Medical University, Nanning, China.,Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China
| | - Z Li
- Urology Department, The Armed Police Corps Hospital of Guangdong Provence, Guangzhou, China
| | - Q Yu
- Urology Department, First Affiliated Hospital of Xinxiang Medical College, Xinxiang, China
| | - C Wu
- Urology Department, First Affiliated Hospital of Xinxiang Medical College, Xinxiang, China
| | - Z Lu
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - F Zhu
- Urology Department, First Affiliated Hospital of Xinxiang Medical College, Xinxiang, China
| | - H Zhang
- Urology Department, First Affiliated Hospital of Xinxiang Medical College, Xinxiang, China
| | - M Liao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - T Li
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - W Chen
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - X Xian
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - A Tan
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Z Mo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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153
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Lu H, Qian S, Muhammad U, Jiang X, Han J, Lu Z. Effect of fructose on promoting fengycin biosynthesis inBacillus amyloliquefaciensfmb-60. J Appl Microbiol 2016; 121:1653-1664. [DOI: 10.1111/jam.13291] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 08/05/2016] [Accepted: 08/30/2016] [Indexed: 11/28/2022]
Affiliation(s)
- H. Lu
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu China
| | - S. Qian
- Department of Bioengineering and Food; Bengbu College; Bengbu Anhui China
| | - U. Muhammad
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu China
| | - X. Jiang
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu China
| | - J. Han
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu China
| | - Z. Lu
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu China
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154
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Tao J, Zheng L, Meng M, Li Y, Lu Z. Shp2 suppresses the adipogenic differentiation of preadipocyte 3T3-L1 cells at an early stage. Cell Death Discov 2016; 2:16051. [PMID: 27551539 PMCID: PMC4979423 DOI: 10.1038/cddiscovery.2016.51] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/25/2016] [Accepted: 06/05/2016] [Indexed: 11/10/2022] Open
Abstract
Tyrosine phosphatase protein Shp2 is a potential therapeutic target for obesity. However, the mechanism of Shp2 during adipogenesis is not fully understood. The present study investigated the role of Shp2 in the terminal differentiation of preadipocytes. The results showed that Shp2 suppressed adipocyte differentiation in 3T3-L1 cells; overexpression of Shp2 reduced lipid droplet production in 3T3-L1 cells, whereas Shp2 knockdown increased lipid droplet production in 3T3-L1 cells. Furthermore, inhibition of Shp2 activity also enhanced adipocyte differentiation. Interestingly, Shp2 expression was specifically decreased early during differentiation in response to stimulation with the dexamethasone–methylisobutylxanthine–insulin (DMI) hormone cocktail. During the first 2 days of differentiation, Shp2 overexpression impaired the DMI-induced phosphorylation of signal transducer and activator of transcription 3 (STAT3) in 3T3-L1 cells and blocked the peak expression of CCAAT/enhancer-binding proteins β and δ during preadipocyte differentiation. In conclusion, Shp2 downregulated the early stages of hormone-induced differentiation of 3T3-L1 cells and inhibited the expression of the first wave of transcription factors by suppressing the DMI-induced STAT3 signaling pathway. These discoveries point to a novel role of Shp2 during adipogenesis and support the hypothesis that Shp2 could be a therapeutic target for the control of obesity.
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Affiliation(s)
- J Tao
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - L Zheng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - M Meng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Y Li
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Z Lu
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
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155
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Abstract
Hilar cholangiocarcinoma (HCCA) is also known as cancer at the upper part of bile duct, perihilar cholangiocarcinoma or Klatskin tumor, etc.Bismuth-Corlette type Ⅲ hilar cholangiocarcinoma refers to tumor invading right hepatic duct (Ⅲa) or left hepatic duct (Ⅲb). While Bismuth-Corlette type Ⅳ hilar cholangiocarcinoma refers to both left and right intrahepatic bile ducts being invaded. Under the premise of strictly grasping the indications of surgery, if preoperative management is conducted carefully, extended hepatic resection is a safe and feasible surgery to remove Bismuth-Corlette type Ⅲ and type Ⅳ hilar cholangiocarcinoma. When conducting extended hepatic resection, right hepatectomy and combined caudate lobectomy should be conducted depending on the circumstances. Routine skeletization lymph node dissection of the hepatoduodenal ligament is performed, which could be expanded into celiac trunk, para-aortic area and the rear of pancreatic head. In the premise of radical resection, invaded vessels should be removed and then reconstructed depending on circumstances.
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Affiliation(s)
- Z Lu
- Department of General Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, Anhui Province, China
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156
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Singh R, Gupta SC, Peng WX, Zhou N, Pochampally R, Atfi A, Watabe K, Lu Z, Mo YY. Regulation of alternative splicing of Bcl-x by BC200 contributes to breast cancer pathogenesis. Cell Death Dis 2016; 7:e2262. [PMID: 27277684 PMCID: PMC5143396 DOI: 10.1038/cddis.2016.168] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/29/2016] [Accepted: 05/12/2016] [Indexed: 01/06/2023]
Abstract
BC200 is a long non-coding RNA (lncRNA) that has been implicated in the regulation of protein synthesis, yet whether dysregulation of BC200 contributes to the pathogenesis of human diseases remains elusive. In this study, we show that BC200 is upregulated in breast cancer; among breast tumor specimens there is a higher level of BC200 in estrogen receptor (ER) positive than in ER-negative tumors. Further experiments show that activation of estrogen signaling induces expression of BC200. To determine the significance of ER-regulated BC200 expression, we knockout (KO) BC200 by CRISPR/Cas9. BC200 KO suppresses tumor cell growth in vitro and in vivo by expression of the pro-apoptotic Bcl-xS isoform. Mechanistically, BC200 contains a 17-nucleotide sequence complementary to Bcl-x pre-mRNA, which may facilitate its binding to Bcl-x pre-mRNA and recruitment of heterogeneous nuclear ribonucleoprotein (hnRNP) A2/B1, a known splicing factor. Consequently, hnRNP A2/B1 interferes with association of Bcl-x pre-mRNA with the Bcl-xS-promoting factor Sam68, leading to a blockade of Bcl-xS expression. Together, these results suggest that BC200 plays an oncogenic role in breast cancer. Thus, BC200 may serve as a prognostic marker and possible target for attenuating deregulated cell proliferation in estrogen-dependent breast cancer.
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Affiliation(s)
- R Singh
- Department of Biochemistry, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - S C Gupta
- Department of Biochemistry, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - W-X Peng
- Department of Biochemistry, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA.,Department of Cell Biology, School of Medicine, Jiangsu University, Zhenjiang, China
| | - N Zhou
- System Biosciences, Mountain View, CA, USA
| | - R Pochampally
- Department of Biochemistry, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - A Atfi
- Department of Biochemistry, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - K Watabe
- Cancer Biology, Wake Forest School of Medicine, Bermuda Run, NC, USA
| | - Z Lu
- Department of Endocrinology, PLA General Hospital, Beijing, China
| | - Y-Y Mo
- Department of Pharmacology/Toxicology and Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
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157
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Lu Z. WE-AB-206-03: Workshop. Med Phys 2016. [DOI: 10.1118/1.4957769] [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: 11/07/2022] Open
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158
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159
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Little K, Reiser I, Sanchez A, Chung J, MacMahon H, Lu Z. TH-CD-207B-10: Effect of CT Reconstruction Filter On Measured Hounsfield Values in Lung Nodules. Med Phys 2016. [DOI: 10.1118/1.4958216] [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: 11/07/2022] Open
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160
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Zhao H, Lu Z, Bauzon F, Fu H, Cui J, Locker J, Zhu L. p27T187A knockin identifies Skp2/Cks1 pocket inhibitors for advanced prostate cancer. Oncogene 2016; 36:60-70. [PMID: 27181203 DOI: 10.1038/onc.2016.175] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/04/2016] [Accepted: 04/11/2016] [Indexed: 12/27/2022]
Abstract
SCFSkp2/Cks1 ubiquitinates Thr187-phosphorylated p27 for degradation. Overexpression of Skp2 coupled with underexpression of p27 are frequent characteristics of cancer cells. When the role of SCFSkp2/Cks1-mediated p27 ubiquitination in cancer was specifically tested by p27 Thr187-to-Ala knockin (p27T187A KI), it was found dispensable for KrasG12D-induced lung tumorigenesis but essential for Rb1-deficient pituitary tumorigenesis. Here we identify pRb and p53 doubly deficient (DKO) prostate tumorigenesis as a context in which p27 ubiquitination by SCFSkp2/Cks1 is required for p27 downregulation. p27 protein accumulated in prostate when p27T187A KI mice underwent DKO prostate tumorigenesis. p27T187A KI or Skp2 knockdown (KD) induced similar degrees of p27 protein accumulation in DKO prostate cells, and Skp2 KD did not further increase p27 protein in DKO prostate cells that contained p27T187A KI (AADKO prostate cells). p27T187A KI activated an E2F1-p73-apoptosis axis in DKO prostate tumorigenesis, slowed disease progression and significantly extended survival. Querying co-occurrence relationships among RB1, TP53, PTEN, NKX3-1 and MYC in TCGA of prostate cancer identified co-inactivation of RB1 and TP53 as the only statistically significant co-occurrences in metastatic castration-resistant prostate cancer (mCRPC). Together, our study identifies Skp2/Cks1 pocket inhibitors as potential therapeutics for mCRPC. Procedures for establishing mCRPC organoid cultures from contemporary patients were recently established. An Skp2/Cks1 pocket inhibitor preferentially collapsed DKO prostate tumor organoids over AADKO organoids, which spontaneously disintegrated over time when DKO prostate tumor organoids grew larger, setting the stage to translate mouse model findings to precision medicine in the clinic on the organoid platform.
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Affiliation(s)
- H Zhao
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Z Lu
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - F Bauzon
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - H Fu
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - J Cui
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - J Locker
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - L Zhu
- Departments of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
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161
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Poston CJ, Pierce TC, Li Y, Brinson CW, Lu Z, Lauer AW, Leite RS, Huang Y. Statin intake is associated with MMP-1 level in gingival crevicular fluid of patients with periodontitis. Oral Dis 2016; 22:438-44. [PMID: 26988924 DOI: 10.1111/odi.12474] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 01/07/2016] [Revised: 03/03/2016] [Accepted: 03/04/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND This study was conducted to assess whether statin intake is associated with clinical parameters of periodontitis and matrix metalloproteinase (MMP) levels in gingival crevicular fluid (GCF) of non-diabetic and diabetic patients. METHODS We first determined the effect of simvastatin on MMP expression in mononuclear cells. We then recruited 117 non-diabetic and diabetic patients, who all had periodontitis and took or did not take statin, and measured periodontal probing depth (PPD) and clinical attachment level (CAL), and collected gingival crevicular fluid (GCF) to quantify MMPs. RESULTS The in vitro studies showed that simvastatin potently inhibited the expression of MMP-1, MMP-8, and MMP-9 upregulated by lipopolysaccharide (LPS) and high glucose in mononuclear cells. The patient study showed that, after adjusting for age and smoking status, PPD in diabetic patients on statin was significantly less than that in diabetic patients not on statin. MMP-1 level in GCF of non-diabetic and diabetic patients on statin was lower than that of non-diabetic and diabetic patients not on statin, respectively. No difference was found for MMP-8 and -9 levels in GCF. CONCLUSION Statin intake is associated with reduced PPD in diabetic patients and MMP-1 level in GCF in either non-diabetic or diabetic patients.
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Affiliation(s)
- C J Poston
- Division of Periodontics, Department of Stomatology, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - T C Pierce
- Division of Periodontics, Department of Stomatology, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Y Li
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - C W Brinson
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Z Lu
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC, USA
| | - A W Lauer
- Division of Biostatistics, Department of Public Health Sciences, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - R S Leite
- Division of Periodontics, Department of Stomatology, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Y Huang
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA.,Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC, USA
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162
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Lu Z, Shang BS, Sun YT, Zhu ZG, Guan PF, Wang WH, Bai HY. Revealing β-relaxation mechanism based on energy distribution of flow units in metallic glass. J Chem Phys 2016; 144:144501. [PMID: 27083732 DOI: 10.1063/1.4945279] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The β-relaxation, which is the source of the dynamics in glass state and has practical significance to relaxation and mechanical properties of glasses, has been an open question for decades. Here, we propose a flow unit perspective to explain the structural origin and evolution of β-relaxation based on experimentally obtained energy distribution of flow units using stress relaxation method under isothermal and linear heating modes. Through the molecular dynamics simulations, we creatively design various artificial metallic glass systems and build a direct relation between β-relaxation behavior and features of flow units. Our results demonstrate that the β-relaxation in metallic glasses originates from flow units and is modulated by the energy distribution of flow units, and the density and distribution of flow units can effectively regulate the β-relaxation behavior. The results provide a better understanding of the structural origin of β-relaxation and also afford a method for designing metallic glasses with obvious β-relaxation and better mechanical properties.
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Affiliation(s)
- Z Lu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - B S Shang
- Beijing Computational Science Research Center, Beijing 100094, China
| | - Y T Sun
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Z G Zhu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - P F Guan
- Beijing Computational Science Research Center, Beijing 100094, China
| | - W H Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - H Y Bai
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
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163
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Partovi S, Vidal L, Nakamoto D, Lu Z, Buethe J, Coffey M, Patel I. Lymphatic malformation treatment in adult and pediatric populations using real-time MRI guided percutaneous sclerotherapy. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.570] [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: 11/24/2022] Open
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164
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Lu Z, Chen Y, Li L, Wang G, Xue H, Tang W. Combination therapy of renin–angiotensin system inhibitors plus calcium channel blockers versus other two-drug combinations for hypertension: a systematic review and meta-analysis. J Hum Hypertens 2016; 31:1-13. [DOI: 10.1038/jhh.2015.125] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/11/2015] [Accepted: 11/24/2015] [Indexed: 11/09/2022]
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165
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Liu J, Lu Z, Zhu X, Zhang D, Sun M, Zhang X, Lu G. Beneficial effect of bilevel positiveairway pressure on Cheyne–Stokes respiration in patients with congestive heart failure. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.496] [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: 10/22/2022]
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166
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Zhang X, Shen L, Lu Z, Liu W, Liu T, Hu B, Li W, Fan Q, Xu J, Xu N, Bai Y, Pan Y, Xu Q, Bai W, Xia L, Gao Y, Wang W, Shu Y, Dai G, Feng J. 144O Comparison of efficacy and safety of paclitaxel and capecitabine followed by capecitabine as maintenance therapy versus cisplatin and capecitabine therapy for advanced gastric cancer: a multicentre, randomised, active-controlled phase III study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.05] [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: 11/12/2022] Open
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167
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Chang Q, Lu Z, He M, Gao R, Bai H, Shi B, Shan A. Effects of dietary supplementation of fulvic acid on lipid metabolism of finishing pigs. J Anim Sci 2015; 92:4921-6. [PMID: 25349342 DOI: 10.2527/jas.2014-8137] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The experiment was conducted to investigate the effects of dietary supplementation of fulvic acid on lipid metabolism of finishing pigs. One hundred eighty crossbred barrows (Landrace × Yorkshire, 60 ± 2.5 kg) were randomly allotted to 5 dietary treatments (36 pigs/treatment) and fed a basal diet supplemented with 0, 0.2%, 0.4%, 0.6%, and 0.8% fulvic acid for 42 d. Thirty pigs (6 pigs/treatment) were slaughtered at the end of the experiment. Blood samples and adipose tissue were collected for determination of blood parameters and lipid metabolic enzymes. The results showed that compared with the control group, dietary supplementation of 0.2%, 0.4%, and 0.6% fulvic acid significantly reduced mean backfat thickness of pigs (P < 0.05). The serum concentrations of low-density lipoprotein, leptin, growth hormone, insulin, and triiodothyronine were significantly increased by adding fulvic acid in diets (P < 0.05). With the raised concentration of dietary fulvic acid, hormone sensitive lipase (HSL) activity was significantly increased (P < 0.05), and lipoprotein lipase (LPL) activity was significantly decreased (P < 0.05) in adipose tissue. In conclusion, dietary supplementation of fulvic acid reduced the mean backfat thickness of pigs. This change related to the increased activity of HSL and the decreased activity of LPL in adipose tissue.
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Affiliation(s)
- Q Chang
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - Z Lu
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - M He
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - R Gao
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - H Bai
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - B Shi
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
| | - A Shan
- Institute of Animal Nutrition, Northeast Agricultural University, Mucai street No.59, Xiangfang District, Harbin 150030, China
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Jia J, Cui Y, Lu M, Wang X, Li J, Li J, Li Y, Zhang X, Gao J, Zhou J, Lu Z, Gong J, Yu J, Sun Z, Liu C, Shen L, Zhang X. The relation of EGFR expression by immunohistochemical staining and clinical response of combination treatment of nimotuzumab and chemotherapy in esophageal squamous cell carcinoma. Clin Transl Oncol 2015; 18:592-8. [PMID: 26459251 DOI: 10.1007/s12094-015-1406-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 03/12/2015] [Accepted: 09/03/2015] [Indexed: 12/14/2022]
Abstract
INTRODUCTION The esophageal squamous cell carcinoma (ESCC) is the predominant pathological type and accounts for more than 80 % of esophageal cancer in China. The successful use of anti-epidermal growth factor receptor (EGFR) treatment in head and neck squamous cell carcinoma provides the rationale for introducing anti-EGFR targeting treatment in ESCC. One of our prospective phase II clinical trials analyzed the efficacy of nimotuzumab, an anti-EGFR agent, combined with chemotherapy (paclitaxel and cisplatin) to treat unresectable ESCC. MATERIALS AND METHODS We analyzed the correlation of the clinical response with EGFR expression by immunohistochemical staining (IHC). RESULTS Totally 55 tumor samples were analyzed. 18/55 (32.7 %) cases were with high EGFR expression while the other 37/55 (67.3 %) cases were with low to moderate EGFR expression. The expression of EGFR was not related to gender, age, tumor location, tumor differentiation and clinical stage of disease. The objective response rate (ORR) in high EGFR expression group was 55.6 % (10/18) while that in low to moderate EGFR expression group was 54.1 % (20/37) (P = 0.57). Both the progression-free survival (PFS) and overall survival (OS) in high EGFR expression group were much shorter than those in low to moderate EGFR expression group (PFS: 5.8 ± 0.5 vs. 11.0 ± 2.8 months, P = 0.007; OS: 9.7 ± 0.5 vs. 21.5 ± 1.5 months, P = 0.03). CONCLUSIONS The results showed that over-expression of EGFR was related to poor survival of ESCC. The over-expression of EGFR by IHC might not be an ideal predictive biomarker of nimotuzumab treatment. Other EGFR pathway-associated molecules should be analyzed in further studies.
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Affiliation(s)
- J Jia
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China
| | - Y Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China
| | - M Lu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - X Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - Jie Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - Jian Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - Y Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - X Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Gao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Zhou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - Z Lu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Gong
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - J Yu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China
| | - Z Sun
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China
| | - C Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China
| | - L Shen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The Gastrointestinal Department, Peking University Cancer Hospital and Institute, Beijing, China
| | - X Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), The VIP-II Gastrointestinal Cancer Division of Medical Department, Peking University Cancer Hospital and Institute, 52 Fucheng Road, Haidian District, 100142, Beijing, China.
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Xu Q, Liu LZ, Yin Y, He J, Li Q, Qian X, You Y, Lu Z, Peiper SC, Shu Y, Jiang BH. Regulatory circuit of PKM2/NF-κB/miR-148a/152-modulated tumor angiogenesis and cancer progression. Oncogene 2015; 34:5482-93. [PMID: 25703326 DOI: 10.1038/onc.2015.6] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 12/17/2014] [Accepted: 12/29/2014] [Indexed: 12/28/2022]
Abstract
Upregulation of the embryonic M2 isoform of pyruvate kinase (PKM2) emerges as a critical player in the cancer development and metabolism, yet the underlying mechanism of PKM2 overexpression remains to be elucidated. Here we demonstrate that IGF-1/IGF-IR regulates PKM2 expression by enhancing HIF-1α-p65 complex binding to PKM2 promoter. PKM2 expression is regulated by miR-148a/152 suppression. PKM2 directly interacts with NF-κB p65 subunit to promote EGR1 expression for regulating miR-148a/152 feedback circuit in normal cells, but not in cancer cells because of the DNA hypermethylation of miR-148a and miR-152 gene promoters. The silencing of miR-148a/152 contributes to the overexpression of PKM2, NF-κB or/and IGF-IR in some cancer cells. We show that disruption of PKM2/NF-κB/miR-148a/152 feedback loop can regulate cancer cell growth and angiogenesis, and is also associated with triple-negative breast cancer (TNBC) phenotype, which may have clinical implication for providing novel biomarker(s) of TNBC and potential therapeutic target(s) in the future.
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Affiliation(s)
- Q Xu
- State Key lab of Reproductive Medicine, Department of Pathology, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
| | - L-Z Liu
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Y Yin
- State Key lab of Reproductive Medicine, Department of Pathology, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Pathology, Anhui Medical University, Hefei, China
| | - J He
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Q Li
- State Key lab of Reproductive Medicine, Department of Pathology, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
| | - X Qian
- State Key lab of Reproductive Medicine, Department of Pathology, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
| | - Y You
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Z Lu
- Brain Tumor Center and Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - S C Peiper
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Y Shu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
| | - B-H Jiang
- State Key lab of Reproductive Medicine, Department of Pathology, Collaborative Innovation Center for Cancer Personalized Medicine, Cancer Center, Nanjing Medical University, Nanjing, China
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
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170
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Luo F, Lu Z, Wang G, Zhang N, Yang J, Wu S, Yang L, Jing X. 309 Study of carrier erythrocyte encapsulated fluorouracil in mice with malignant ascites. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30174-5] [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: 10/22/2022]
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172
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Chen C, Wang Q, Gao Y, Lu Z, Cui X, Zheng T, Liu Y, Li X, He X, Zhang X, Duan C, Li T. Photothrombosis combined with thrombin injection establishes a rat model of cerebral venous sinus thrombosis. Neuroscience 2015; 306:39-49. [PMID: 26297898 DOI: 10.1016/j.neuroscience.2015.08.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 08/08/2015] [Accepted: 08/11/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Cerebral venous sinus thrombosis (CVST) is a rare but life-threatening disease and an animal model for in-depth study of CVST is needed. This study aimed to develop a rat model suitable for studying clinically relevant aspects of CVST and investigating its dynamic pathophysiological changes during a 7-day period. METHOD A photothrombosis method was used to create a rat sinus-vein thrombosis model. A spot size-adjustable Diode Pumped Solid State laser (DPSS) combined with thrombin injection occluded the rostral and caudal superior sagittal sinus (SSS). The model was used to evaluate pathophysiological changes at different time points over 7 days. Evans Blue dye injection was used to detect alterations in blood-brain barrier (BBB) permeability. Brain water content was also measured. Moreover, we examined changes in brain infarct volume, neurological function, as well as histology after induction of CVST. RESULT CVST in rats significantly altered BBB permeability, consistent with the development of brain edema. It was accompanied by an increase in brain infarct volume and deficits in neurological function that began on day 1, peaked on day 2, and typically improved by day 7 due to the neuroprotective effects of angiogenesis and gliocyte proliferation. CONCLUSION In this study, we describe a rat model that produces clinically relevant pathophysiology and pathology that will facilitate evaluation of therapeutic regimens for CVST. Furthermore, our results indicate a period of optimal clinical intervention for patients with CVST, which may reduce the probability of dependency and death.
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Affiliation(s)
- C Chen
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Q Wang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
| | - Y Gao
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Z Lu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Cui
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - T Zheng
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Liu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Li
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X He
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Zhang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - C Duan
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - T Li
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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Ketov SV, Sun YH, Nachum S, Lu Z, Checchi A, Beraldin AR, Bai HY, Wang WH, Louzguine-Luzgin DV, Carpenter MA, Greer AL. Rejuvenation of metallic glasses by non-affine thermal strain. Nature 2015; 524:200-3. [DOI: 10.1038/nature14674] [Citation(s) in RCA: 446] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 06/08/2015] [Indexed: 11/09/2022]
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Li YZ, Zhao LZ, Wang C, Lu Z, Bai HY, Wang WH. Communication: Non-monotonic evolution of dynamical heterogeneity in unfreezing process of metallic glasses. J Chem Phys 2015; 143:041104. [PMID: 26233099 DOI: 10.1063/1.4927701] [Citation(s) in RCA: 9] [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: 11/15/2022] Open
Abstract
The relaxation dynamics in unfreezing process of metallic glasses is investigated by the activation-relaxation technique. A non-monotonic dynamical microstructural heterogeneities evolution with temperature is discovered, which confirms and supplies more features to flow units concept of glasses. A flow unit perspective is proposed to microscopically describe this non-monotonic evolution of the dynamical heterogeneities as well as its relationship with the deformation mode development of metallic glasses.
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Affiliation(s)
- Y Z Li
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - L Z Zhao
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - C Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Z Lu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - H Y Bai
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - W H Wang
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Chen Z, Zhan L, Lu Z, Ma Y, Gao Z, Guo H, Pang L, Jin Q. Etanercept Inhibits Pro-inflammatory Cytokines Expression in Titanium Particle-Stimulated Peritoneal Macrophages. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i6.7] [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: 11/17/2022] Open
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177
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Li X, Wang G, Lu Z, Chen M, Tan J, Fang X. Serum 25-hydroxyvitamin D predict prognosis in radioiodine therapy of Graves' disease. J Endocrinol Invest 2015; 38:753-9. [PMID: 25736544 DOI: 10.1007/s40618-015-0252-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 10/10/2014] [Accepted: 01/29/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE To investigate serum 25-hydroxyvitamin D 25(OH)D status and assess the predictability of outcome in patients with Graves' disease (GD) who received a patient-specific calculated dose of radioiodine therapy (RIT). METHODS 128 patients with GD who received RIT from July 2010 to September 2010 were included. Pre-therapy serum levels of 25(OH)D, calcium, phosphorus, parathyroid hormone, free triiodothyronine, free thyroxine, thyroid stimulating hormone and creatinine were measured. 60 age- and BMI-matched healthy subjects were chosen as the normal control group. RESULTS Post-therapy follow-up results revealed that therapy failed in 25.00 % of the patients. Serum 25(OH)D levels were found to be significantly lower in patients who failed in therapy. The prevalence of vitamin D deficiency in GD patients was significantly higher compared with control subjects (56.25 vs. 10.00 %, P < 0.001), and therapy failed in 27 (37.50 %) of these patients whose serum 25(OH)D levels < 20 ng/ml. Out of the 56 patients (43.75 %) in whom serum 25(OH)D levels ≥20 ng/ml, therapy was unsuccessful in only 5 (8.93 %). Cox regression analysis suggested that serum 25(OH)D levels <20 ng/ml might be an independent risk factor for predicting failure of RIT in GD patients (relative risk = 8.83, 95 % confidence interval = 3.34-23.38, P < 0.001). CONCLUSIONS Serum 25(OH)D levels were lower in patients who failed than in those who succeeded in RIT of GD. Therefore, serum 25(OH)D < 20 ng/ml might be an independent risk factor for predicting failure of RIT in GD patients.
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Affiliation(s)
- X Li
- Department of Gerontology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Xi Road, Huai'an, 223300, Jiangsu, China
| | - G Wang
- Department of Urology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Road, Huai'an, 223300, Jiangsu, China
| | - Z Lu
- Department of Gerontology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Xi Road, Huai'an, 223300, Jiangsu, China
| | - M Chen
- Department of Gerontology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Xi Road, Huai'an, 223300, Jiangsu, China
| | - J Tan
- Department of Gerontology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Xi Road, Huai'an, 223300, Jiangsu, China
| | - X Fang
- Department of Gerontology, Huai'an First People's Hospital, Nanjing Medical University, 6 Beijing Xi Road, Huai'an, 223300, Jiangsu, China.
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Little K, Lu Z, MacMahon H, Reiser I. WE-G-204-01: BEST IN PHYSICS (IMAGING): Effect of Image Processing Parameters On Nodule Detectability in Chest Radiography. Med Phys 2015. [DOI: 10.1118/1.4926085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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179
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Lu Z. MO-AB-210-01: Ultrasound Imaging and Therapy-Hands On Workshop. Med Phys 2015. [DOI: 10.1118/1.4925291] [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: 11/07/2022] Open
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180
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Reft C, Lu Z, Noonan J. SU-E-T-340: Dosimetry of a Small Field Electron Beam for Innovative Radiotherapy of Small Surface Or Internal Tumors. Med Phys 2015. [DOI: 10.1118/1.4924701] [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: 11/07/2022] Open
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181
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Lu Z. MO-AB-210-03: Workshop. Med Phys 2015. [DOI: 10.1118/1.4925293] [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: 11/07/2022] Open
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182
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Lu Z. WE-A-210-01: Overview of Methods and Accreditation Updates. Med Phys 2015. [DOI: 10.1118/1.4925898] [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: 11/07/2022] Open
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183
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Zhou J, Liu H, Wang T, Li Y, Zhang J, Lu Z, Fu Y, Li F. Adjusting the inter-particle spacing of a nanoparticle array at the sub-nanometre scale by thermal annealing. Chem Commun (Camb) 2015; 50:14547-9. [PMID: 25308600 DOI: 10.1039/c4cc06912a] [Citation(s) in RCA: 12] [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: 12/31/2022]
Abstract
A successful attempt to fabricate nanoparticle arrays with sub-nanometre spacing by thermal annealing of the prepared nanoparticle self-assembly was made. The molecular dynamics simulation indicated that the spacing decrease could be attributed to the temperature-enhanced mobility of the ligand, which promoted the relaxation of the nanoparticles to a more compact arrangement.
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Affiliation(s)
- J Zhou
- College of Sciences, Northeastern University, Shenyang 110819, China.
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Pineda MJ, Lu Z, Cao D, Kim JJ. Influence of Cancer-Associated Endometrial Stromal Cells on Hormone-Driven Endometrial Tumor Growth. Discov Oncol 2015; 6:131-41. [PMID: 25976290 DOI: 10.1007/s12672-015-0223-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/04/2015] [Indexed: 12/14/2022] Open
Abstract
Cancer-associated fibroblasts have been shown to inhibit or stimulate tumor growth depending on stage, grade, and tumor type. It remains unclear, however, the effect of endometrial-cancer-associated fibroblasts on hormone-driven responses in endometrial cancer. In this study, we investigated the effect of normal and cancer-associated stromal cells from patients with and without endometrial cancer on endometrial tumor growth in response to estradiol (E2) and progesterone (P4). Compared to benign endometrial stromal cells, the low-grade and high-grade cancer-associated stromal cells exhibited a blunted hormone response for proliferation as well as IGFBP1 secretion. Additional analysis of the influence of stromal cells on hormone-driven tumor growth was done by mixing stromal cells from benign, low-grade, or high-grade tumors, with Ishikawa cells for subcutaneous tumor formation. The presence of both benign and high-grade cancer-associated stromal cells increased estradiol-driven xenografted tumor growth compared to Ishikawa cells alone. Low-grade cancer-associated stromal cells did not significantly influence hormone-regulated tumor growth. Addition of P4 attenuated tumor growth in Ishikawa + benign or high-grade stromal cells, but not in Ishikawa cells alone or with low-grade stromal cells. Using an angiogenesis focused real-time array TGFA, TGFB2 and TGFBR1 and VEGFC were identified as potential candidates for hormone-influenced growth regulation of tumors in the presence of benign and high-grade stromal cells. In summary, endometrial-cancer-associated cells responded differently to in vitro hormone treatment compared to benign endometrial stromal cells. Additionally, presence of stromal cells differentially influenced hormone-driven xenograft growth in vivo depending on the disease status of the stromal cells.
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Affiliation(s)
- M J Pineda
- Division of Gynecologic Oncology, Northwestern University, Chicago, IL, USA
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Bailes J, Bravo S, Breiter H, Kaufman D, Lu Z, Molfese D, Perrish T, Slobounov S, Talavage T, Zhu D. A call to arms: the need to create an inter-institutional concussion neuroimaging consortium to discover clinically relevant diagnostic biomarkers and develop evidence-based interventions to facilitate recovery. Dev Neuropsychol 2015; 40:59-62. [PMID: 25961586 DOI: 10.1080/87565641.2015.1018090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- J Bailes
- a University of Chicago Pritzker School of Medicine , Chicago , Illinois
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Zhang L, Lu Z. Expression, purification and characterization of an atypical 2-Cys peroxiredoxin from the silkworm, Bombyx mori. Insect Mol Biol 2015; 24:203-212. [PMID: 25512182 DOI: 10.1111/imb.12149] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Peroxiredoxins (Prxs) play important roles in protecting organisms against damage caused by reactive oxygen species (ROS). In this study, we cloned a cDNA of Bombyx mori peroxiredoxin 5 (BmPrx5), which contained a 565-bp open reading frame for a 188-residue protein. Sequence analysis indicated that BmPrx5 belongs to the atypical 2-Cys peroxiredoxin family. Recombinant BmPrx5 purified from Escherichia coli showed antioxidant activity that removes H2 O2 and protects DNA from oxidative damage. Quantitative real-time PCR showed that the level of BmPrx5 mRNA in haemocytes increased early and decreased by 24 h after injection of H2 O2 whereas, in the fat body, the transcript level decreased at 6 h and increased at 12 h. Pseudomonas aeruginosa and Staphylococcus aureus infection resulted in higher levels of H2 O2 in the haemolymph and of BmPrx5 mRNA in haemocytes at 8 h postinfection. These data suggest that BmPrx5 acts as an antioxidant enzyme to protect the silkworm from oxidative damage induced by bacterial infection. Further study is needed to elucidate the exact role of BmPrx5 in the silkworm immune system.
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Affiliation(s)
- L Zhang
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, China
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Zhang Y, Lu Z, Cheng R, Liu L. Current state of allocation of oral health human resources in northern China and future needs. Int J Dent Hyg 2015; 13:268-72. [PMID: 25752775 DOI: 10.1111/idh.12126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2014] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of the present investigation was to describe the distribution, structure and allocation of oral health services personnel, evaluate oral health service capacity and predict the needs for oral health services in northern China over the coming 10 years. METHODS The questionnaires were sent to all the dental medical institutions included in this study directly from the Sanitation Bureau and the Health Supervision Station. All the institutions and dental personnel were asked to fill out the questionnaires, and then, the questionnaires were collected through postal service and email. RESULTS In Liaoning Province, which is in northern China, there are a total of 5617 dentists in total, 87.8% of whom are located in urban areas. Dentists in rural areas were found to be less educated and specialized. The ratio of dentists to nurses to technicians was about 6:2:1, and the ratio of dentists to total population was 1:7682. It was predicted that, in 2020, the number of dentists could reach 13 207. This would meet the area's needs for oral health services. CONCLUSION Currently, in northern China, the oral health infrastructure suffers from an insufficient number of dental professionals, disproportionate distribution and inappropriate structure. To improve social equity, it is necessary to adjust the distribution of dental personnel capable of performing for oral health services.
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Affiliation(s)
- Y Zhang
- The school of stomatology, China Medical University, Shenyang City, Liaoning Province, China
| | - Z Lu
- The school of stomatology, China Medical University, Shenyang City, Liaoning Province, China
| | - R Cheng
- The school of stomatology, China Medical University, Shenyang City, Liaoning Province, China
| | - L Liu
- The school of stomatology, China Medical University, Shenyang City, Liaoning Province, China
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188
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Boadi J, Fernandes J, Mittar S, Hearnden V, Lu Z, MacNeil S, Thornhill M, Murdoch C, Hunter K, Matcher S. Imaging of 3D Tissue-Engineered Models of Oral Cancer Using 890 and 1300 nm Optical Coherence Tomography. Sovrem Tekhnologii Med 2015. [DOI: 10.17691/stm2015.7.1.08] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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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189
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Khoo P, Mittar S, Kasaragod D, Lu Z, Matcher S. Depth-Resolved Dynamics of Aceto-Whitening in Rabbit Cornea Studied by 1300 nm Optical Coherence Tomography. Sovrem Tekhnologii Med 2015. [DOI: 10.17691/stm2015.7.1.07] [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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190
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Lu M, Kong Q, Xu X, Lu H, Lu Z, Yu W, Zuo B, Su J, Guo R. Evaluation of Apoptotic and Growth Inhibitory Activity of Phloretin in BGC823 Gastric Cancer Cell. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i1.5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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191
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Klein SR, Piya S, Lu Z, Xia Y, Alonso MM, White EJ, Wei J, Gomez-Manzano C, Jiang H, Fueyo J. C-Jun N-terminal kinases are required for oncolytic adenovirus-mediated autophagy. Oncogene 2015; 34:5295-301. [PMID: 25619840 PMCID: PMC4515398 DOI: 10.1038/onc.2014.452] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [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: 09/05/2014] [Revised: 11/05/2014] [Accepted: 12/05/2014] [Indexed: 12/21/2022]
Abstract
Oncolytic adenoviruses, such as Delta-24-RGD, are replication-competent
viruses that are genetically engineered to induce selective cancer cell lysis.
In cancer cells, Delta-24-RGD induces massive autophagy, which is required for
efficient cell lysis and adenoviral spread. Understanding the cellular
mechanisms underlying the regulation of autophagy in cells treated with
oncolytic adenoviruses may provide new avenues to improve the therapeutic
effect. In this work, we showed that cancer cells infected with Delta-24-RGD
undergo autophagy despite the concurrent activation of the AKT/mTOR pathway.
Moreover, adenovirus replication induced sustained activation of JNK proteins
in vitro. ERK1/1 phosphorylation remained unchanged during
adenoviral infection, suggesting specificity of JNK activation. Using genetic
ablation and pharmacological inactivation of JNK, we unequivocally demonstrated
that cells infected with Delta-24-RGD required JNK activation. Thus, genetic
co-ablation of JNK1 and JNK2 genes or
inhibition of JNK kinase function rendered Delta-24-RGD–treated cells
resistant to autophagy. Accordingly, JNK activation induced phosphorylation of
Bcl-2 and prevented the formation of Bcl-2/Beclin 1 autophagy suppressor
complexes. Using an orthotopic model of human glioma xenograft, we showed that
treatment with Delta-24-RGD induced phosphorylation and nuclear translocation of
JNK, as well as phosphorylation of Bcl-2. Collectively, our data identified JNK
proteins as an essential mechanistic link between Delta-24-RGD infection and
autophagy in cancer cells. Activation of JNK without inactivation of the
AKT/mTOR pathway constitutes a distinct molecular signature of autophagy
regulation that differentiates Delta-24-RGD adenovirus from the mechanism used
by other oncolytic viruses to induce autophagy and provides a new rationale for
the combination of oncolytic viruses and chemotherapy.
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Affiliation(s)
- S R Klein
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Cancer Biology Program, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA
| | - S Piya
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Z Lu
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Cancer Biology Program, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA
| | - Y Xia
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M M Alonso
- Department of Medical Oncology, University Hospital of Navarra, Pamplona, Spain
| | - E J White
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - J Wei
- Department of Neurosurgery, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C Gomez-Manzano
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Cancer Biology Program, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA
| | - H Jiang
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - J Fueyo
- Department of Neuro-Oncology, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Neurosurgery, Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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192
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Chen D, Li Y, Guo F, Lu Z, Hei C, Li P, Jin Q. Protective effect of p38 MAPK inhibitor on wear debris-induced inflammatory osteolysis through downregulating RANK/RANKL in a mouse model. Genet Mol Res 2015; 14:40-52. [PMID: 25729934 DOI: 10.4238/2015.january.15.6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Aseptic loosening associated with wear particle-induced inflammation is a major cause of joint implant failure. Recent studies have demonstrated the therapeutic effects of p38 mitogen-activated protein kinase (MAPK)-based therapies on chronic inflammatory diseases. The purpose of this study was to investigate whether SB203580, a p38 MAPK inhibitor, inhibits wear debris-induced inflammatory osteolysis in mice through downregulation of receptor activator of nuclear factor kβ (RANK)/RANK ligand (RANKL). We used a murine osteolysis model to study the effect of SB203580 on RANKL/RANK signaling and titanium particle-induced osteolysis in vivo. Pouch membranes with intact bone implants were analyzed using histological analysis and transmission electron microscopy, and the levels of RANK and RANKL protein and mRNA were evaluated by immunohistological staining and real-time reverse transcriptase-polymerase chain reaction. SB203580 had less of an effect on RANK and RANKL expression under wear debris-induced conditions. The number of TRAP-positive cells was remarkably reduced in Ti-particle-induced pouch tissues. These effects were confirmed through the transmission electron microscopy results. These results suggest that p38 MAPK-based therapies are beneficial in preventing aseptic loosening associated with total joint replacement by modulating RANK-RANKL signaling.
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Affiliation(s)
- D Chen
- Department of Orthopaedics, The General Hospital of Ningxia Medical University, Yinchuan, Hui Autonomous Region, China
| | - Y Li
- Basic Medical Science College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - F Guo
- Basic Medical Science College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Z Lu
- Department of Orthopaedics, The General Hospital of Ningxia Medical University, Yinchuan, Hui Autonomous Region, China
| | - C Hei
- Basic Medical Science College, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - P Li
- Department of Orthopaedics, The General Hospital of Ningxia Medical University, Yinchuan, Hui Autonomous Region, China
| | - Q Jin
- Department of Orthopaedics, The General Hospital of Ningxia Medical University, Yinchuan, Hui Autonomous Region, China
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193
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Newman P, Lu Z, Roohani-Esfahani SI, Church TL, Biro M, Davies B, King A, Mackenzie K, Minett AI, Zreiqat H. Porous and strong three-dimensional carbon nanotube coated ceramic scaffolds for tissue engineering. J Mater Chem B 2015; 3:8337-8347. [DOI: 10.1039/c5tb01052g] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A method to coat high-quality uniform coatings of carbon nanotubes throughout 3D porous structures is developed. Testing of their physical and biological properties demonstrate their potential for application in tissue engineering.
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194
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Cui J, Yang Y, Li H, Leng Y, Qian K, Huang Q, Zhang C, Lu Z, Chen J, Sun T, Wu R, Sun Y, Song H, Wei X, Jing P, Yang X, Zhang C. MiR-873 regulates ERα transcriptional activity and tamoxifen resistance via targeting CDK3 in breast cancer cells. Oncogene 2014; 34:3895-907. [PMID: 25531331 DOI: 10.1038/onc.2014.430] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 11/19/2014] [Accepted: 11/21/2014] [Indexed: 12/21/2022]
Abstract
miRNAs (microRNAs) are frequently and aberrantly expressed in many cancers. MiR-873 has been revealed to be downregulated in colorectal cancer and glioblastoma. However, its function remains unclear. Here we report that miR-873 is downregulated in breast tumor compared with normal tissue. Enforced expression of miR-873 decreases the transcriptional activity of ER (estrogen receptor)-α but not ERβ through the modulation of ERα phosphorylation in ER-positive breast cancer cells. We also found that miR-873 inhibits breast cancer cell proliferation and tumor growth in nude mice. Reporter gene assays revealed cyclin-dependent kinase 3 (CDK3) as a direct target of miR-873. CDK3 was shown to be overexpressed in breast cancer and phosphorylate ERα at Ser104/116 and Ser118. Furthermore, we found that Mir-873 inhibits ER activity and cell growth via targeting CDK3. Interestingly, miR-873 was observed to be downregulated in tamoxifen-resistant MCF-7/TamR cells, while CDK3 is overexpressed in these cells. More importantly, re-expression of miR-873 reversed tamoxifen resistance in MCF-7/TamR cells. Our data demonstrate that miR-873 is a novel tumor suppressor in ER-positive breast cancer and a potential therapeutic approach for treatment of tamoxifen-resistant breast cancer.
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Affiliation(s)
- J Cui
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - Y Yang
- Beijing Institute for Neuroscience, Capital Medical University, Beijing, China
| | - H Li
- Department of Molecular & Biomedical Pharmacology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Y Leng
- The Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - K Qian
- The Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Q Huang
- Department of Animal Sciences and Technology, Jilin Agriculture University, Changchun, China
| | - C Zhang
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Z Lu
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - J Chen
- Urology Department, the First Hospital of Nanchang University, Nanchang, China
| | - T Sun
- Urology Department, the First Hospital of Nanchang University, Nanchang, China
| | - R Wu
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - Y Sun
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - H Song
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
| | - X Wei
- Department of Applied Chemistry, College of Chemistry & Molecular Engineering, Peking University, Beijing, China
| | - P Jing
- Department of Chemistry, College of Arts and Sciences, Indiana University-Purdue University Fort Wayne Fort Wayne, IN, USA
| | - X Yang
- Institute of Health Sciences, Anhui University, Hefei, China
| | - C Zhang
- Institute of Disease Control and Prevention, Chinese Academy of Military Medical Sciences, Beijing, China
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195
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Li Y, Lu Z, Zhang X, Yu H, Kirkwood KL, Lopes-Virella MF, Huang Y. Metabolic syndrome exacerbates inflammation and bone loss in periodontitis. J Dent Res 2014; 94:362-70. [PMID: 25503900 DOI: 10.1177/0022034514561658] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Clinical studies have shown that metabolic syndrome (MetS) is associated with increased risk of developing periodontitis. However, the underlying mechanisms remain largely unknown. Since it is known that lipopolysaccharide (LPS)-activated toll-like receptor 4 signaling pathways play a crucial role in periodontitis, we hypothesized that MetS enhances LPS-induced periodontal inflammation and alveolar bone loss. In this study, we induced MetS in C57BL/6 mice by feeding them high-fat diet (HFD), and we induced periodontitis by periodontal injection of Aggregatibacter actinomycetemcomitans LPS. We found that mice fed a HFD had significantly increased body weight, plasma lipids, insulin, and insulin resistance when compared with mice fed regular chow, indicating that the mice developed MetS. We also found that a HFD markedly increased LPS-induced alveolar bone loss, osteoclastogenesis, and inflammatory infiltration. Analysis of gene expression in periodontal tissue revealed that HFD and LPS injection cooperatively stimulated expression of cytokines that are known to be involved in periodontal tissue inflammation and osteoclastogenesis-such as interleukin 6, monocyte-chemotactic protein 1, receptor activator of nuclear factor kappa-B ligand, and macrophage colony-stimulating factor. To further understand the potential mechanisms involved in MetS-boosted tissue inflammation, our in vitro studies showed that palmitic acid-the most abundant saturated fatty acid (SFA) and the major SFA in the HFD used in our animal study-potently enhanced LPS-induced proinflammatory gene expression in macrophages. In sum, this study demonstrated that MetS was associated with increased periodontal inflammation and alveolar bone loss in an LPS-induced periodontitis animal model. This study also suggests that SFA palmitic acid may play an important role in MetS-associated periodontitis by enhancing LPS-induced expression of inflammatory cytokines in macrophages.
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Affiliation(s)
- Y Li
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Z Lu
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - X Zhang
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - H Yu
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - K L Kirkwood
- Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - M F Lopes-Virella
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC, USA
| | - Y Huang
- Division of Endocrinology, Diabetes and Medical Genetics, Department of Medicine, College of Medicine, Medical University of South Carolina, Charleston, SC, USA Department of Oral Health Sciences, College of Dental Medicine, Medical University of South Carolina, Charleston, SC, USA Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC, USA
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196
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Zhu L, Lu Z, Zhao H. Antitumor mechanisms when pRb and p53 are genetically inactivated. Oncogene 2014; 34:4547-57. [PMID: 25486431 PMCID: PMC4459916 DOI: 10.1038/onc.2014.399] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [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: 08/19/2014] [Revised: 11/03/2014] [Accepted: 11/03/2014] [Indexed: 12/31/2022]
Abstract
pRb and p53 are the two major tumor suppressors. Their inactivation is frequent when cancers develop and their reactivation is rationale of most cancer therapeutics. When pRb and p53 are genetically inactivated, cells irreparably lose the antitumor mechanisms afforded by them. Cancer genome studies document recurrent genetic inactivation of RB1 and TP53, and the inactivation becomes more frequent in more advanced cancers. These findings may explain why more advanced cancers are more likely to resist current therapies. Finding successful treatments for more advanced and multi-therapy resistant cancers will depend on finding antitumor mechanisms that remain effective when pRb and p53 are genetically inactivated. Here, we review studies that have begun to make progress in this direction.
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Affiliation(s)
- L Zhu
- Department of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Z Lu
- Department of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - H Zhao
- Department of Developmental and Molecular Biology, and Ophthalmology and Visual Sciences, and Medicine, The Albert Einstein Comprehensive Cancer Center and Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
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197
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Holinka L, Fernandez-Sainz I, Sanford B, O׳Donnell V, Gladue D, Carlson J, Lu Z, Risatti G, Borca M. Development of an improved live attenuated antigenic marker CSF vaccine strain candidate with an increased genetic stability. Virology 2014; 471-473:13-8. [DOI: 10.1016/j.virol.2014.09.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 09/09/2014] [Accepted: 09/23/2014] [Indexed: 10/24/2022]
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198
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Han X, Yuan YB, Yu X, Zhao JP, Wang CY, Lu Z, Yang FD, Dong H, Wu YF, Ungvari GS, Xiang YT, Chiu HFK. The Chinese First-Episode Schizophrenia Trial: background and study design. East Asian Arch Psychiatry 2014; 24:169-173. [PMID: 25482837] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Schizophrenia is a complex illness with unknown aetiology and pathogenesis. Currently, a considerable number of patients with schizophrenia do not receive standardised and systematic treatment in China. In the past years, many controlled trials have been conducted in chronic schizophrenia. In contrast, research on first-episode schizophrenia is lacking. This paper describes the background and design of the Chinese First-Episode Schizophrenia Trial project--a multicentre, randomised, open-label clinical trial. A total of 600 first-episode schizophrenia patients were randomly divided into 3 groups and treated with risperidone, aripiprazole, and olanzapine for 1 year. During the study period, only 1 medication change of the 3 antipsychotic medications was allowed.
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Affiliation(s)
- X Han
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Y B Yuan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - X Yu
- Peking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - J P Zhao
- Mental Health Institute, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - C Y Wang
- Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Z Lu
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - F D Yang
- Center for Biological Psychiatry, Beijing Hui-Long-Guan Hospital, Beijing, China
| | - H Dong
- Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan province, China
| | - Y F Wu
- The George Institute for Global Health at Peking University Health Science Center, Beijing, China
| | - G S Ungvari
- The University of Notre Dame Australia / Marian Centre, Perth, Australia
| | - Y T Xiang
- Faculty of Health Sciences, University of Macau, Macao, China
| | - H F K Chiu
- Department of Psychiatry, The Chinese University of Hong Kong, Hong Kong SAR, China
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199
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Jia Z, Chen S, Hao C, Huang Y, Liu Z, Pan A, Liao R, Wang X, Lu Z. Outbreak of extrapulmonary tuberculosis infection associated with acupuncture point injection. Clin Microbiol Infect 2014; 21:349-53. [PMID: 25677256 DOI: 10.1016/j.cmi.2014.10.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 08/24/2014] [Revised: 10/23/2014] [Accepted: 10/23/2014] [Indexed: 11/26/2022]
Abstract
Mycobacterium tuberculosis infection is rarely reported to be associated with acupuncture practices. We performed a retrospective outbreak investigation of a unique outbreak of 33 extrapulmonary M. tuberculosis infections related to acupuncture point injection therapy (AIT) among clients who visited a private traditional Chinese medicine clinical centre in China. The lumps, abscesses and ulcers occurred mostly on the neck, shoulders, waist, knees and hips, localized at acupuncture point meridian sites. These symptoms appeared from January to November 2011, with a peak cluster of infections in September 2011 (nine cases). M. tuberculosis Beijing strain was isolated and confirmed by DNA sequencing. All diagnosed patients were treated empirically with appropriate antibiotic treatment, and their condition improved. Our study indicated that this outbreak was most likely resulted from contaminated AIT. Drafting standard guidelines for AIT is urgently needed, and routine medical supervision should be provided, including obligating health providers to perform routine physical examinations that include testing for infectious diseases.
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Affiliation(s)
- Z Jia
- National Institute of Drug Dependence, Peking University, Beijing 100191, PR China; Takemi Program in International Health, Department of Global Health and Population, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115, USA
| | - S Chen
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310006, PR China
| | - C Hao
- School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, PR China; Takemi Program in International Health, Department of Global Health and Population, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115, USA
| | - Y Huang
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Z Liu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310006, PR China
| | - A Pan
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310006, PR China
| | - R Liao
- Office of Scientific Research, Peking University, Beijing 100871, PR China.
| | - X Wang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310006, PR China.
| | - Z Lu
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, PR China.
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200
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Boys BL, Martin RV, van Donkelaar A, MacDonell RJ, Hsu NC, Cooper MJ, Yantosca RM, Lu Z, Streets DG, Zhang Q, Wang SW. Fifteen-year global time series of satellite-derived fine particulate matter. Environ Sci Technol 2014; 48:11109-18. [PMID: 25184953 DOI: 10.1021/es502113p] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ambient fine particulate matter (PM2.5) is a leading environmental risk factor for premature mortality. We use aerosol optical depth (AOD) retrieved from two satellite instruments, MISR and SeaWiFS, to produce a unified 15-year global time series (1998-2012) of ground-level PM2.5 concentration at a resolution of 1° x 1°. The GEOS-Chem chemical transport model (CTM) is used to relate each individual AOD retrieval to ground-level PM2.5. Four broad areas showing significant, spatially coherent, annual trends are examined in detail: the Eastern U.S. (-0.39 ± 0.10 μg m(-3) yr(-1)), the Arabian Peninsula (0.81 ± 0.21 μg m(-3) yr(-1)), South Asia (0.93 ± 0.22 μg m(-3) yr(-1)) and East Asia (0.79 ± 0.27 μg m(-3) yr(-1)). Over the period of dense in situ observation (1999-2012), the linear tendency for the Eastern U.S. (-0.37 ± 0.13 μg m(-3) yr(-1)) agrees well with that from in situ measurements (-0.38 ± 0.06 μg m(-3) yr(-1)). A GEOS-Chem simulation reveals that secondary inorganic aerosols largely explain the observed PM2.5 trend over the Eastern U.S., South Asia, and East Asia, while mineral dust largely explains the observed trend over the Arabian Peninsula.
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Affiliation(s)
- B L Boys
- Dalhousie University , Halifax, Nova Scotia Canada
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