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Wang Y, Duan H, Meng T, Shen M, Ji Q, Xing J, Wang Q, Wang T, Niu Y, Yu T, Liu Z, Jia H, Zhan Y, Chen W, Zhang Z, Su W, Dai Y, Zhang X, Zheng Y. Reduced serum club cell protein as a pulmonary damage marker for chronic fine particulate matter exposure in Chinese population. Environ Int 2018; 112:207-217. [PMID: 29277064 DOI: 10.1016/j.envint.2017.12.024] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Exposure to fine particulate matter (PM2.5) pollution is associated with increased morbidity and mortality from respiratory diseases. However, few population-based studies have been conducted to assess the alterations in circulating pulmonary proteins due to long-term PM2.5 exposure. METHODS We designed a two-stage study. In the first stage (training set), we assessed the associations between PM2.5 exposure and levels of pulmonary damage markers (CC16, SP-A and SP-D) and lung function in a coke oven emission (COE) cohort with 558 coke plant workers and 210 controls. In the second stage (validation set), significant initial findings were validated by an independent diesel engine exhaust (DEE) cohort with 50 DEE exposed workers and 50 controls. RESULTS Serum CC16 levels decreased in a dose response manner in association with both external and internal PM2.5 exposures in the two cohorts. In the training set, serum CC16 levels decreased with increasing duration of occupational PM2.5 exposure history. An interquartile range (IQR) (122.0μg/m3) increase in PM2.5 was associated with a 5.76% decrease in serum CC16 levels, whereas an IQR (1.06μmol/mol creatinine) increase in urinary 1-hydroxypyrene (1-OHP) concentration was associated with a 5.36% decrease in serum CC16 levels in the COE cohort. In the validation set, the concentration of serum CC16 in the PM2.5 exposed group was 22.42% lower than that of the controls and an IQR (1.24μmol/mol creatinine) increase in urinary 1-OHP concentration was associated with a 12.24% decrease in serum CC16 levels in the DEE cohort. CONCLUSIONS Serum CC16 levels may be a sensitive marker for pulmonary damage in populations with high PM2.5 exposure.
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Affiliation(s)
- Yanhua Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Meili Shen
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Qianpeng Ji
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China; Faculty of Public Health, Weifang Medical University, Weifang, China
| | - Jie Xing
- Faculty of Public Health, Weifang Medical University, Weifang, China
| | - Qingrong Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China; Faculty of Public Health, Weifang Medical University, Weifang, China
| | - Ting Wang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Tao Yu
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Zhong Liu
- Jinan Municipal Center for Disease Control and Prevention, Jinan, China
| | | | | | - Wen Chen
- Faculty of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zhihu Zhang
- Shandong Academy of Occupational Health and Occupational Medicine, Jinan, China
| | - Wenge Su
- Laigang Hospital attached to Taishan Medical University, Laiwu, China
| | - Yufei Dai
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xuchun Zhang
- Laigang Hospital attached to Taishan Medical University, Laiwu, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, China.
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152
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Deng H, Dai Y, Lu H, Li SS, Gao L, Zhu DL. Analysis of the correlation between non-alcoholic fatty liver disease and bone metabolism indicators in healthy middle-aged men. Eur Rev Med Pharmacol Sci 2018; 22:1457-1462. [PMID: 29565507 DOI: 10.26355/eurrev_201803_14493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the relationship between bone metabolic indicators and non-alcoholic fatty liver disease (NAFLD) in healthy middle-aged men. PATIENTS AND METHODS The bone metabolic indicators of 232 healthy middle-age men with NAFLD (NAFLD group) and 308 healthy controls without fatty liver (Control group) were measured, including non-collagenous osteocalcin, the procollagen type 1 N-terminal propeptide (P1NP), beta-C-terminal telopeptide of type I collagen (β-CTX). The Student's t-test was used to analyze the differences in the bone metabolic indicators, age, clinical data, biochemical indicators, and the indicators of glucose and lipid metabolism between the two groups. The correlation of fatty liver-related indicators was detected using the logistic regression analysis. RESULTS The body mass index (BMI), diastolic blood pressure, and heart rate in NAFLD group were significantly higher than those in Control group. Among the indicators of glucose and lipid metabolism in NAFLD group, the levels of blood glucose [fasting plasma glucose, postprandial blood glucose and hemoglobin A1c (HbA1c)] were significantly higher than those in Control group. In addition, the insulin resistance and secretion indexes were also significantly higher than those in Control group. The levels of lipid metabolic indicators such as triglyceride were higher, but high-density lipoprotein cholesterol was lower than that in Control group. From logistic regression analysis, the BMI, Homeostasis model assessment (HOMA)-β, HOMA-IR, HbA1c and P1NP were positively associated with the occurrence of NAFLD. CONCLUSIONS The bone metabolic indicator P1NP might be a potential predicator for the diagnosis of NAFLD in clinical application.
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Affiliation(s)
- H Deng
- Department of Geriatrics, Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, China.
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153
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Dai Y, Ren D, Bassig BA, Vermeulen R, Hu W, Niu Y, Duan H, Ye M, Meng T, Xu J, Bin P, Shen M, Yang J, Fu W, Meliefste K, Silverman D, Rothman N, Lan Q, Zheng Y. Occupational exposure to diesel engine exhaust and serum cytokine levels. Environ Mol Mutagen 2018; 59:144-150. [PMID: 29023999 PMCID: PMC6438621 DOI: 10.1002/em.22142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 09/05/2017] [Accepted: 09/07/2017] [Indexed: 05/27/2023]
Abstract
The International Agency for Research on Cancer has classified diesel engine exhaust (DEE) as a human lung carcinogen. Given that inflammation is suspected to be an important underlying mechanism of lung carcinogenesis, we evaluated the relationship between DEE exposure and the inflammatory response using data from a cross-sectional molecular epidemiology study of 41 diesel engine testing workers and 46 unexposed controls. Repeated personal exposure measurements of PM2.5 and other DEE constituents were taken for the diesel engine testing workers before blood collection. Serum levels of six inflammatory biomarkers including interleukin (IL)-1, IL-6, IL-8, tumor necrosis factor (TNF)-α, macrophage inflammatory protein (MIP)-1β, and monocyte chemotactic protein (MCP)-1 were analyzed in all subjects. Compared to unexposed controls, concentrations of MIP-1β were significantly reduced by ∼37% in DEE exposed workers (P < 0.001) and showed a strong decreasing trend with increasing PM2.5 concentrations in all subjects (Ptrend < 0.001) as well as in exposed subjects only (Ptrend = 0.001). Levels of IL-8 and MIP-1β were significantly lower in workers in the highest exposure tertile of PM2.5 (>397 µg/m3 ) compared to unexposed controls. Further, significant inverse exposure-response relationships for IL-8 and MCP-1 were also found in relation to increasing PM2.5 levels among the DEE exposed workers. Given that IL-8, MIP-1β, and MCP-1 are chemokines that play important roles in recruitment of immunocompetent cells for immune defense and tumor cell clearance, the observed lower levels of these markers with increasing PM2.5 exposure may provide insight into the mechanism by which DEE promotes lung cancer. Environ. Mol. Mutagen. 59:144-150, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Yufei Dai
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Dianzhi Ren
- Chaoyang Center for Disease Control and prevention, Chaoyang, China
| | - Bryan A. Bassig
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Roel Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Wei Hu
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Meng Ye
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Jun Xu
- Hong Kong University, Hong Kong, China
| | - Ping Bin
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Meili Shen
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
| | - Jufang Yang
- Chaoyang Center for Disease Control and prevention, Chaoyang, China
| | - Wei Fu
- Chaoyang Center for Disease Control and prevention, Chaoyang, China
| | - Kees Meliefste
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Debra Silverman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Nathaniel Rothman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Qing Lan
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute. Rockville, Maryland, U.S.A
| | - Yuxin Zheng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. Beijing, China
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154
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Liu M, Zhu H, Dai Y, Pan H, Li N, Wang L, Yang H, Yan K, Gong F. Zinc-α2-Glycoprotein Is Associated with Obesity in Chinese People and HFD-Induced Obese Mice. Front Physiol 2018; 9:62. [PMID: 29467670 PMCID: PMC5808341 DOI: 10.3389/fphys.2018.00062] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/18/2018] [Indexed: 12/14/2022] Open
Abstract
Zinc-α2-glycoprotein (ZAG) plays an important role in the regulation of body weight, body fat, and glucose metabolism. In this study, we first measured ZAG levels in serum and ZAG mRNA levels in subcutaneous white adipose tissue (sWAT) among overweight/obese patients and lean control subjects. Second, we investigated the effects of ZAG administration on the body weight, body fat and glucose metabolism of high-fat diet (HFD)-induced obese ICR mice and the possible mechanisms involved. The results showed that serum ZAG and mRNA levels in sWAT were significantly decreased in overweight/obese patients and that both showed a negative association with body mass index (BMI) and body weight after adjustment for age and sex. Further partial correlation analysis found that ZAG mRNA expression was positively related with several WAT browning-related genes, including uncoupling protein 1 (UCP1) (r = 0.67) and peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC1a) (r = 0.60), in the sWAT of all subjects. Additionally, intraperitoneal injection of a ZAG expression plasmid (5 μg/injection, four times a week) in HFD-induced obese mice for 8 weeks demonstrated that ZAG overexpression significantly decreased body weight and WAT mass, and greatly increased the glucose tolerance of obese mice, as shown by the intraperitoneal glucose tolerance test (IPGTT) and intraperitoneal insulin tolerance test (IPITT). The staining of UCP1-positive adipocytes was significantly stronger in the sWAT of ZAG-treated obese mice than in that of obese control mice. The mRNA and protein levels of PGC1α in sWAT were significantly increased to 2.2- and 5.3-fold, respectively, compared with HFD obese mice, and there was a strong positive correlation between the expression levels of Zag and Pgc1α in mouse sWAT (r = 0.74). A similar phenomenon was also observed in visceral white adipose tissue (vWAT): the mRNA and protein levels of PGC1α were increased to 1.9- and 3.6-fold, respectively, when obese mice were treated with ZAG. In conclusion, ZAG levels in both sWAT and serum are inversely related with BMI and body weight in Chinese subjects. The action of ZAG on body weight, fat mass and glucose metabolism may be realized through activating PGC1α expression in sWAT and vWAT, then promoting WAT browning in obese mice.
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Affiliation(s)
- Meijuan Liu
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Huijuan Zhu
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yufei Dai
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Hui Pan
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Naishi Li
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Linjie Wang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Hongbo Yang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Kemin Yan
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Fengying Gong
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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155
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Zhang P, Bousack H, Dai Y, Offenhäusser A, Mayer D. Shell-binary nanoparticle materials with variable electrical and electro-mechanical properties. Nanoscale 2018; 10:992-1003. [PMID: 29265122 DOI: 10.1039/c7nr07912e] [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: 05/09/2023]
Abstract
Nanoparticle (NP) materials with the capability to adjust their electrical and electro-mechanical properties facilitate applications in strain sensing technology. Traditional NP materials based on single component NPs lack a systematic and effective means of tuning their electrical and electro-mechanical properties. Here, we report on a new type of shell-binary NP material fabricated by self-assembly with either homogeneous or heterogeneous arrangements of NPs. Variable electrical and electro-mechanical properties were obtained for both materials. We show that the electrical and electro-mechanical properties of these shell-binary NP materials are highly tunable and strongly affected by the NP species as well as their corresponding volume fraction ratio. The conductivity and the gauge factor of these shell-binary NP materials can be altered by about five and two orders of magnitude, respectively. These shell-binary NP materials with different arrangements of NPs also demonstrate different volume fraction dependent electro-mechanical properties. The shell-binary NP materials with a heterogeneous arrangement of NPs exhibit a peaking of the sensitivity at medium mixing ratios, which arises from the aggregation induced local strain enhancement. Studies on the electron transport regimes and micro-morphologies of these shell-binary NP materials revealed the different mechanisms accounting for the variable electrical and electro-mechanical properties. A model based on effective medium theory is used to describe the electrical and electro-mechanical properties of such shell-binary nanomaterials and shows an excellent match with experiment data. These shell-binary NP materials possess great potential applications in high-performance strain sensing technology due to their variable electrical and electro-mechanical properties.
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Affiliation(s)
- P Zhang
- Institute of Complex Systems, Bioelectronics (ICS-8) and JARA - Fundamentals of Future Information Technology, Forschungszentrum Jülich, 52425 Jülich, Germany.
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156
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Li H, Hu B, Wei L, Zhou L, Zhang L, Lin Y, Qin B, Dai Y, Lu Z. Non-alcoholic fatty liver disease is associated with stroke severity and progression of brainstem infarctions. Eur J Neurol 2018; 25:577-e34. [PMID: 29281159 DOI: 10.1111/ene.13556] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 10/22/2017] [Accepted: 12/18/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Non-alcoholic fatty liver disease (NAFLD) is closely correlated to visceral obesity, dyslipidaemia, insulin resistance and type 2 diabetes mellitus. We sought to assess the association between a specific stroke subgroup, brainstem infarctions (BSIs) and NAFLD. Furthermore, we evaluated whether NAFLD is an independent risk factor in patients with BSIs. METHODS Non-alcoholic fatty liver disease was assessed in 306 patients with radiologically confirmed BSIs via liver ultrasound. Differences between patients with and without NAFLD were compared. Data associated with stroke severity and progression after admission were collected. RESULTS Non-alcoholic fatty liver disease was found in 130 (42.5%) patients with acute BSIs; 58 (19.0%) had National Institutes of Health Stroke Scale scores >7 and 57 (18.6%) had progression after admission. Initial National Institutes of Health Stroke Scale scores, incidence of progression and stroke severity, and modified Rankin Scale scores at discharge were significantly higher in patients with NAFLD than in those without NAFLD. NAFLD was associated with stroke severity [Cox regression: hazard ratio (HR), 2.243; 95% confidence interval (CI), 1.254-4.013, P < 0.01]. This risk remained statistically significant after controlling for age, gender, diabetes mellitus and C-reactive protein (HR, 2.327; 95% CI, 1.252-4.324, P < 0.01). In addition, NAFLD was associated with progression (HR, 2.155; 95% CI, 1.201-3.865, P < 0.05) and remained significant after controlling for age, gender, diabetes mellitus, fibrinogen and C-reactive protein (HR, 2.378; 95% CI, 1.260-4.486, P < 0.01). CONCLUSIONS These results suggest that NAFLD is a potential risk factor when evaluating the severity and progression of acute BSIs. This relationship is independent of classic risk factors and metabolic syndrome features.
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Affiliation(s)
- H Li
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - B Hu
- Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute), Guangzhou
| | - L Wei
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - L Zhou
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou
| | - L Zhang
- Department of Neurology, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, China
| | - Y Lin
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - B Qin
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - Y Dai
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
| | - Z Lu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou
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157
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Chen HK, Dai Y, Wu T, Wang X, Wan YL, Tang JQ. [Mechanism of cross talk between tissue factor/active coagulation factor VII and epidermal growth factor receptor signalings in colon cancer cells in culture]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:931-936. [PMID: 29263461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To preliminarily verify the cross talk between tissue factor/active coagulation factor VII (TF/FVIIa) and epidermal growth factor receptor (EGFR) pathways in human colon cancer cells in culture. METHODS FVIIa was treated to HT-29 (KRAS-wild type) and LoVo (KRAS-mutant) colon cancer cells to activate TF/FVIIa pathway, qRT-PCR and Western blot were used to detect the expressions of amphiregulin (AREG) and epiregulin (EREG), ligands of EGFR on mRNA and protein levels, respectively. After knocking down expression of TF by TF-targeted siRNA transfection, FVIIa was treated and mRNA expressions of AREG and EREG were detected to see whether the FVIIa-induced effects were dependent on TF. Expressions of mRNA of TF and FVII were detected by qRT-PCR following the activation of EGFR pathway by treatment with epidermal growth factor (EGF) to HT-29 and LoVo cells. RESULTS After TF/FVIIa pathway was activated, for HT-29 cells, expressions of AREG (on mRNA level) and EREG (both on mRNA and protein level) were significantly down-regulated versus those of control group, gene expressions of AREG and EREG were 0.55±0.09 vs.0.99 ±0.09, 0.67±0.10 vs.1.02±0.02, protein expressions of EREG were 0.54±0.09 vs.1.04±0.13, all P<0.05. For LoVo cells, expressions of AREG (both on mRNA and protein level) and EREG (on protein level) were significantly up-regulated versus those of control group, gene expression of AREG were 1.87±0.39 vs. 0.93±0.23, protein expressions of AREG and EREG were 3.09±0.73 vs.1.11±0.21, 1.53±0.19 vs.0.97±0.23, all P<0.05. The regulating effect of AREG and EREG mRNA expression by FVIIa in HT-29 and LoVo cells could both be partly blocked by knocking down TF expression. For HT-29 cells, activation of EGFR pathway induced no significant TF mRNA expression, FVII mRNA expression was not detected. However,for LoVo cells, activation of EGFR pathway induced significantly higher mRNA expressions of both TF and FVII, expressions were 1.53±0.23 vs.1.00±0.23, 53.20±6.08 vs.1.00±0.15, all P<0.05. CONCLUSION In colon cancer cell LoVo, when activated, TF/FVIIa pathway and EGFR pathway could interact through upregulating the other pathway's effectors, and mutant KRAS might play a critical role in the two pathways' cross talk.
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Affiliation(s)
- H K Chen
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
| | - Y Dai
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - T Wu
- Department of Gastroenterology, Peking University First Hospital, Beijing 100034, China
| | - X Wang
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
| | - Y L Wan
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
| | - J Q Tang
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
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158
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Wu F, Zhang Z, Miao X, Dai Y, Wang X, Zhu Q. Three cases of potential twinning in Weddell seals (Leptonychotes weddellii) at Fildes Peninsula, King George Island, Antarctica. Polar Biol 2017. [DOI: 10.1007/s00300-017-2222-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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159
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Wang Y, Yan F, Jia Q, Dai Y, Wang Q. Quantitative structure-activity relationship of anti-HIV integrase and reverse transcriptase inhibitors using norm indexes. SAR QSAR Environ Res 2017; 28:1025-1044. [PMID: 29157005 DOI: 10.1080/1062936x.2017.1397055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
The development of new and safe anti-human immunodeficiency virus (anti-HIV) drugs has been an urgent task for medical research recently. Herein, based on the norm-index descriptors proposed in this work and previous works, a couple of models were developed for investigating the quantitative structure-activity/toxicity relationship (QSAR/QSTR) of dual-target anti-HIV integrase (IN) and reverse transcriptase (RT) inhibitors. The validation results proved that the developed models were stable and reliable, both in statistical quality and predictive capacity. Moreover, potential dual-target inhibitors with high activity and low toxicity were deduced from the developed models; molecular docking results indicated that these inhibitors could interact with some important residues of HIV IN and RT through H-bonding. Accordingly, the norm indexes descriptors proposed by this work might be helpful for the research and development of dual-target anti-HIV drugs.
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Affiliation(s)
- Y Wang
- a School of Chemical Engineering and Material Science , Tianjin University of Science and Technology , Tianjin , PR China
| | - F Yan
- a School of Chemical Engineering and Material Science , Tianjin University of Science and Technology , Tianjin , PR China
| | - Q Jia
- b School of Marine and Environmental Science , Tianjin University of Science and Technology , Tianjin , PR China
| | - Y Dai
- c School of Bioengineering , Tianjin University of Science and Technology , Tianjin , PR China
| | - Q Wang
- a School of Chemical Engineering and Material Science , Tianjin University of Science and Technology , Tianjin , PR China
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160
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Wang H, Duan H, Meng T, Yang M, Cui L, Bin P, Dai Y, Niu Y, Shen M, Zhang L, Zheng Y, Leng S. Local and Systemic Inflammation May Mediate Diesel Engine Exhaust–Induced Lung Function Impairment in a Chinese Occupational Cohort. Toxicol Sci 2017; 162:372-382. [DOI: 10.1093/toxsci/kfx259] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Haitao Wang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266021, China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Mo Yang
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266021, China
| | - Lianhua Cui
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266021, China
| | - Ping Bin
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Yufei Dai
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Meili Shen
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Liping Zhang
- Department of Environmental Health, Faculty of Public Health, Weifang Medical University, Weifang 261053, China
| | - Yuxin Zheng
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266021, China
| | - Shuguang Leng
- Department of Environmental and Occupational Health, School of Public Health, Qingdao University, Qingdao 266021, China
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161
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Zhang C, Han X, Douglas P, Dai Y, Wang G. Bipolar Radiofrequency Ablation of Spinal Tumors: The Effect of the Posterior Vertebral Cortex Defect on Temperature Distribution in the Spinal Canal. AJNR Am J Neuroradiol 2017; 39:E1-E2. [PMID: 29146717 DOI: 10.3174/ajnr.a5393] [Citation(s) in RCA: 2] [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: 12/22/2022]
Affiliation(s)
- C Zhang
- Department of Bone and Soft Tissue Tumors Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin's Clinical Research Center for Cancer Tianjin, China
| | - X Han
- Department of Bone and Soft Tissue Tumors Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin's Clinical Research Center for Cancer Tianjin, China
| | - P Douglas
- Tianjin Medical University Tianjin, China
| | - Y Dai
- Institute of Robotics and Automatic Information System Tianjin Key Laboratory of Intelligent Robotics College of Computer and Control Engineering, Nankai University Tianjin, China
| | - G Wang
- Department of Bone and Soft Tissue Tumors Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin's Clinical Research Center for Cancer Tianjin, China
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162
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Chen J, Chen Y, Chen G, Dai Y, Yao Z, Lu Q. Altered brain networks in psychogenic erectile dysfunction: a resting-state fMRI study. Andrology 2017; 5:1073-1081. [PMID: 29073337 DOI: 10.1111/andr.12411] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/28/2017] [Accepted: 07/06/2017] [Indexed: 12/13/2022]
Affiliation(s)
- J. Chen
- Department of Andrology; Nanjing Drum Tower Hospital; The Affiliated Hospital of Nanjing University Medical School; Nanjing China
| | - Y. Chen
- Department of Andrology; Nanjing Drum Tower Hospital; The Affiliated Hospital of Nanjing University Medical School; Nanjing China
| | - G. Chen
- Department of Andrology; Nanjing Drum Tower Hospital; The Affiliated Hospital of Nanjing University Medical School; Nanjing China
| | - Y. Dai
- Department of Andrology; Nanjing Drum Tower Hospital; The Affiliated Hospital of Nanjing University Medical School; Nanjing China
| | - Z. Yao
- Department of Psychiatry; Nanjing Brain Hospital; The Affiliated Hospital of Nanjing Medical University; Nanjing China
| | - Q. Lu
- Key Laboratory of Child Development and Learning Science; Research Centre for Learning Science; Southeast University; Nanjing China
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163
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Bassig BA, Dai Y, Vermeulen R, Ren D, Hu W, Duan H, Niu Y, Xu J, Shiels MS, Kemp TJ, Pinto LA, Fu W, Meliefste K, Zhou B, Yang J, Ye M, Jia X, Meng T, Wong JYY, Bin P, Hosgood HD, Hildesheim A, Silverman DT, Rothman N, Zheng Y, Lan Q. Occupational exposure to diesel engine exhaust and alterations in immune/inflammatory markers: a cross-sectional molecular epidemiology study in China. Carcinogenesis 2017; 38:1104-1111. [PMID: 28968774 PMCID: PMC5862277 DOI: 10.1093/carcin/bgx081] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 07/28/2017] [Indexed: 12/22/2022] Open
Abstract
The relationship between diesel engine exhaust (DEE), a known lung carcinogen, and immune/inflammatory markers that have been prospectively associated with lung cancer risk is not well understood. To provide insight into these associations, we conducted a cross-sectional molecular epidemiology study of 54 males highly occupationally exposed to DEE and 55 unexposed male controls from representative workplaces in China. We measured plasma levels of 64 immune/inflammatory markers in all subjects using Luminex bead-based assays, and compared our findings to those from a nested case-control study of these markers and lung cancer risk, which had been conducted among never-smoking women in Shanghai using the same multiplex panels. Levels of nine markers that were associated with lung cancer risk in the Shanghai study were altered in DEE-exposed workers in the same direction as the lung cancer associations. Among these, associations with the levels of CRP (β= -0.53; P = 0.01) and CCL15/MIP-1D (β = 0.20; P = 0.02) were observed in workers exposed to DEE and with increasing elemental carbon exposure levels (Ptrends <0.05) in multivariable linear regression models. Levels of a third marker positively associated with an increased lung cancer risk, CCL2/MCP-1, were higher among DEE-exposed workers compared with controls in never and former smokers, but not in current smokers (Pinteraction = 0.01). The immunological differences in these markers in DEE-exposed workers are consistent with associations observed for lung cancer risk in a prospective study of Chinese women and may provide some insight into the mechanistic processes by which DEE causes lung cancer.
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Affiliation(s)
- Bryan A Bassig
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Yufei Dai
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Roel Vermeulen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Dianzhi Ren
- Chaoyang Center for Disease Control and Prevention, Chaoyang, Liaoning, China
| | - Wei Hu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jun Xu
- Hong Kong University, Hong Kong, Hong Kong
| | - Meredith S Shiels
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Troy J Kemp
- HPV Immunology Laboratory, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Ligia A Pinto
- HPV Immunology Laboratory, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Wei Fu
- Chaoyang Center for Disease Control and Prevention, Chaoyang, Liaoning, China
| | - Kees Meliefste
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Baosen Zhou
- China Medical University, Shenyang, Liaoning, China
| | - Jufang Yang
- Chaoyang Center for Disease Control and Prevention, Chaoyang, Liaoning, China
| | - Meng Ye
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaowei Jia
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jason YY Wong
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Ping Bin
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - H Dean Hosgood
- Division of Epidemiology, Albert Einstein College of Medicine, New York, NY, USA
| | - Allan Hildesheim
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Debra T Silverman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
| | - Yuxin Zheng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Rockville, MD, USA
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164
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Yao Z, Lin P, Dai Y, Wei Z, Wang Q, Yao X. Investigation of in vivo bioactive components and holistic quality control of Sarcandrae Herba. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Z Yao
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - P Lin
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - Y Dai
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - Z Wei
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - Q Wang
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - X Yao
- College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
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165
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Yao Z, Qin Z, Lin P, Hong X, Wang L, Dai Y, Yao X. Case study of Allii Macrostemonis Bulbus: From chemical and metabolic profile to quality control by UPLC/Q-TOF-MS. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Z Yao
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - Z Qin
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - P Lin
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - X Hong
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - L Wang
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - Y Dai
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
| | - X Yao
- Jinnan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China;, Guangzhou, China
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166
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Gao X, Yang YM, Zhu J, Dai Y, Tan HQ. [Dabigatran versus warfarin for the prevention of stroke in Chinese patients with nonvalvular atrial fibrillation: Chinese subpopulation analysis of RE-LY]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 44:929-934. [PMID: 27903389 DOI: 10.3760/cma.j.issn.0253-3758.2016.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: This analysis was performed to evaluate the efficacy in stroke prevention and safety of dabigatran in Chinese nonvalvular atrial fibrillation(NVAF) patients enrolled in RE-LY trial. Methods: RE-LY was an prospective, open-label, randomized, multicenter study. From March 2006 to March 2009, 541 atrial fibrillation patients at risk of stroke were recruited from 13 medical centers in China. Patients randomly received, in a blinded fashion, fixed doses of dabigatran-110 mg or 150 mg twice daily or, in an unblinded fashion, adjusted-dose warfarin. The primary efficacy endpoint was stroke or systemic embolism. The primary safety endpoint was major bleeding. Results: The incidence of stroke in the Chinese subpopulation was 1.94% per year(7 cases) in the group that received 110 mg of dabigatran (dabigatran 110) and 1.10% per year(4 cases) in the group that received 150 mg of dabigatran (dabigatran 150), as compared with 2.87% per year (10 cases) in warfarin group . Incidence of ischemic stroke was 1.11% per year(4 patients) in dabigatran 110 group, 0.82% per year(3 cases) in dabigatran 150 group and 2.01% per year(7 patients) in warfarin group. Incidence of hemorrhagic stroke was 0.28% per year(1 case) in dabigatran 110 group, 0.27% per year(1 case) in dabigatran 150 group and 0.57% per year(2 cases) in warfarin group. All-cause mortality was similar among the three treatment groups: 3.33% per year(12 cases) in dabigatran 110, 2.19% per year(8 cases) in dabigatran 150 and 2.58% per year(9 cases) in warfarin group. Incidence of major bleeding event was 0.56% per year(2 cases) in both dabigatran groups, as compared with 1.43% per year(5 cases) in warfarin group. Gastrointestinal disorders such as dyspepsia occurred in 12.8% patients of both dabigatran groups, and in 5.6% patients of warfarin group. Conclusions: Despite the descriptive statistical analysis in nature of present study due to the limited number of subjects, our subgroup analysis implies that like warfarin, dabigatran is efficacious and safe for thromboembolism prevention in Chinese patients with atrial fibrillation at risk of stroke. Clinical Trail Registry National Institutes of Health(http: //www.clinicaltrials.gov), CT00262600.
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Affiliation(s)
- X Gao
- Emergency and Intensive Care Center, Cardiovascular Department, Fuwai Hospital, Chinese Academy Of Medical Sciences and Peking Union Medical College, Beijing 10037, China
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167
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Li Z, Zhao S, Chen K, Su Y, Hua W, Chen S, Liang Z, Xu W, Dai Y, Chen R, Zhang S. P6415Baseline continuous premature ventricular complexes burden serves as a predictor for later cardiac death and ventricular arrhythmia events in ICD or CRTD recipients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Z. Li
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - S. Zhao
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - K. Chen
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - Y. Su
- Zhongshan Hospital, Fudan University, Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Shanghai, China People's Republic of
| | - W. Hua
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - S. Chen
- Guangdong General Hospital Guangdong Cardiovascular Institute, Department of Cardiology, Guangdong Cardiovascular Institute, Guangzhou, China People's Republic of
| | - Z. Liang
- The First Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China People's Republic of
| | - W. Xu
- Nanjing Drum Tower Hospital, Department of Cardiology, Nanjing, China People's Republic of
| | - Y. Dai
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - R. Chen
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
| | - S. Zhang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cardiac Arrhythmia Center, Beijing, China People's Republic of
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168
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Yu T, Zhang X, Zhong L, Cui Q, Hu X, Li B, Wang Z, Dai Y, Zheng Y, Bin P. The use of a 0.20 μm particulate matter filter decreases cytotoxicity in lung epithelial cells following air-liquid interface exposure to motorcycle exhaust. Environ Pollut 2017; 227:287-295. [PMID: 28477553 DOI: 10.1016/j.envpol.2017.04.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 04/27/2017] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
This study was designed to investigate whether the use of a 0.20 μm particulate matter (PM) filter reduced the cytotoxicity induced by motorcycle exhaust (ME), a mixture of gases and particles, in lung epithelial cells cultured in air-liquid interface (ALI) inserts. The concentrations of PM, carbon monoxide, carbon dioxide, total hydrocarbons (THC), total volatile organic compounds, and nitrogen oxides in both filtered ME (fME) by a 0.20 μm filter and non-filtered ME (non-fME) were measured. Lung epithelial cells were exposed to clean air, fME, or non-fME in the ALI chamber. Cell relative viabilities (CRV) and the reactive oxygen species (ROS) generation were determined. Our results revealed that PM2.5 was the main compound of PM in ME. After filtration, PM and THC levels were significantly reduced, as compared with non-fME. When compared with the clean air exposed group, the CRV in both fME and non-fME-exposed group was significantly reduced (p < 0.001), while their ROS generation were markedly increased (p < 0.001). When compared with non-fME-exposed group, the CRV and ROS generation were significantly improved following fME exposure (p < 0.05). As a result, of PM and THC concentrations were decreased approximately 90% and 22.71%, respectively, the CRV was improved from 40.4% (non-fME) to 55.7% (fME), and the increased ROS generation by non-fME was decreased about 51.6%. When BEAS-2B cells were exposed to fME, a time-dependent reduction in CRV was observed. In conclusion, our findings suggest that ME-exposure in the ALI system induces cytotoxicity and oxidative stress responses. The addition of a 0.20 μm PM filter significantly modifies the particulate composition in PM and the concentration of THC, and shows protective effects by improving the survival of exposed lung epithelial cells and reducing the ROS generation. Therefore, emission factors such as different size of PM and THC from motorcycles may play a role in ME-induced toxicity.
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Affiliation(s)
- Tao Yu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Xueyan Zhang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Lei Zhong
- Beijing Center for Diseases Prevention and Control, Dongcheng District, Hepingli Street, No. 16, Beijing 100013, China
| | - Qiang Cui
- Beijing Center for Diseases Prevention and Control, Dongcheng District, Hepingli Street, No. 16, Beijing 100013, China
| | - Xiaoyu Hu
- Beijing Center for Diseases Prevention and Control, Dongcheng District, Hepingli Street, No. 16, Beijing 100013, China
| | - Bin Li
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Zhongxu Wang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Yufei Dai
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Yuxin Zheng
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China
| | - Ping Bin
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, 29 Nanwei Road, Beijing 100050, China.
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169
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Leng JH, Dai Y. [The new conception focusing on therapy of endometriosis]. Zhonghua Fu Chan Ke Za Zhi 2017; 52:433-435. [PMID: 28797148 DOI: 10.3760/cma.j.issn.0529-567x.2017.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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170
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Nie X, Mao W, Tan J, Dai Y, Chen J. The Nuclear Orphan Receptors NR4A as Therapeutic Target in Pulmonary Arterial Hypertension. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.440] [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: 10/19/2022] Open
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171
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Liu S, Hou XL, Sui WG, Lu QJ, Hu YL, Dai Y. Direct measurement of B-cell receptor repertoire's composition and variation in systemic lupus erythematosus. Genes Immun 2017; 18:22-27. [PMID: 28053320 DOI: 10.1038/gene.2016.45] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 10/30/2016] [Accepted: 11/01/2016] [Indexed: 01/11/2023]
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease that is known to be associated with polyclonal B-cell hyper-reactivity. B-cell receptor (BCR) has a central role in B-cell development, activation, survival and apoptosis, and thus is a critical component of the regulation of both protective and autoreactive B cells. In this study, we applied multiplex PCR and Illumina high-throughput sequencing to study the composition and variation of the BCRs in peripheral blood mononuclear cells from SLE patients and healthy donors (NC). We found that SLE group displayed significantly shorter CDR3 average length (14.86±0.76aa vs 15.70±0.43aa), more arginine percentage of CDR3 amino acids (7.57±0.20% vs 7.32±0.19%) and poorer immunological diversity than the healthy ones. CDR3 sequence YGMDV present in all SLE samples may provide more information in generating more effective B-cell targeted diagnosis/therapies strategies.
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Affiliation(s)
- S Liu
- Department of Clinical Medical Research, The Second Clinical Medical College of Jinan University (Shenzhen People's Hospital), Shenzhen, China
| | - X L Hou
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, China
| | - W G Sui
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, China
| | - Q J Lu
- Department of Dermatology, Second Xiangya Hospital, Central South University, Hunan Key Laboratory of Medical Epigenomics, Changsha, China
| | - Y L Hu
- Department of Cancer Research, Shenzhen University, Shenzhen, China.,Department of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Y Dai
- Department of Clinical Medical Research, The Second Clinical Medical College of Jinan University (Shenzhen People's Hospital), Shenzhen, China
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172
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Liu LJ, Martinez-Sañudo I, Mazzon L, Prabhakar CS, Girolami V, Deng YL, Dai Y, Li ZH. Bacterial communities associated with invasive populations of Bactrocera dorsalis (Diptera: Tephritidae) in China. Bull Entomol Res 2016; 106:718-728. [PMID: 27600786 DOI: 10.1017/s0007485316000390] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 06/06/2023]
Abstract
The oriental fruit fly Bactrocera dorsalis (Hendel) is a destructive insect pest of a wide range of fruits and vegetables. This pest is an invasive species and is currently distributed in some provinces of China. To recover the symbiotic bacteria of B. dorsalis from different invasion regions in China, we researched the bacterial diversity of this fruit fly among one laboratory colony (Guangdong, China) and 15 wild populations (14 sites in China and one site in Thailand) using DNA-based approaches. The construction of 16S rRNA gene libraries allowed the identification of 24 operational taxonomic units of associated bacteria at the 3% distance level, and these were affiliated with 3 phyla, 5 families, and 13 genera. The higher bacterial diversity was recovered in wild populations compared with the laboratory colony and in samples from early term invasion regions compared with samples from late term invasion regions. Moreover, Klebsiella pneumoniae and Providencia sp. were two of the most frequently recovered bacteria, present in flies collected from three different regions in China where B. dorsalis is invasive. This study for the first time provides a systemic investigation of the symbiotic bacteria of B. dorsalis from different invasion regions in China.
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Affiliation(s)
- L J Liu
- Department of Entomology,College of Plant Protection, China Agricultural University,Beijing,China
| | - I Martinez-Sañudo
- Dipartimento di Agronomia Ambientale e Produzioni Vegetali,Università di Padova - Agripolis, Viale dell'Università,Legnaro,Padova,Italy
| | - L Mazzon
- Dipartimento di Agronomia Ambientale e Produzioni Vegetali,Università di Padova - Agripolis, Viale dell'Università,Legnaro,Padova,Italy
| | - C S Prabhakar
- Department of Entomology,College of Plant Protection, China Agricultural University,Beijing,China
| | - V Girolami
- Dipartimento di Agronomia Ambientale e Produzioni Vegetali,Università di Padova - Agripolis, Viale dell'Università,Legnaro,Padova,Italy
| | - Y L Deng
- Xishuangbanna Entry-Exit Inspection and Quarantine Bureau,Xishuangbanna,Yunnan,China
| | - Y Dai
- Department of Entomology,College of Plant Protection, China Agricultural University,Beijing,China
| | - Z H Li
- Department of Entomology,College of Plant Protection, China Agricultural University,Beijing,China
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173
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Zhang Z, Xu Z, Dai Y, Chen Y. Elevated serum homocysteine level as an independent risk factor for erectile dysfunction: a prospective pilot case-control study. Andrologia 2016; 49. [PMID: 27709655 DOI: 10.1111/and.12684] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2016] [Indexed: 12/20/2022] Open
Abstract
Homocysteine is an amino acid that is produced from the metabolic demethylation of dietary methionine. It has gained arising attention for its association with increased risk of myocardial infarction, stroke and venous thromboembolism. Erectile dysfunction (ED), especially for vasculogenic ED, is a vascular disorder of cavernosal vascular bed. In this prospective pilot case-control study, we investigated plasma homocysteine levels in 32 ED patients and 20 healthy control men. Related patients characteristics including age, weight, height, marital status, smoking and drinking status, level of education were collected and analysed as well as penile colour Doppler ultrasound parameters. ED patients were further categorised into mild, moderate and severe ED based on 5-item of the International Index of Erectile Function. Higher homocysteine levels were observed in ED patients as compared with controls (p < .05). A multivariate logistic regression with likelihood ratio test revealed that homocysteine and penile peak systolic blood flow velocity (PSV) levels posed significant indicators for ED (chi-square of likelihood ratio = 20.42, df = 2, p < .005) as well as moderate and severe ED occurrence (chi-square of likelihood ratio = 28.50, df = 2, p < .005). The threshold value of homocysteine concentration to discriminate ED and control subjects was 12.65 μmol/L by performing receiver operating characteristic curve analyses. These data suggested that elevation of homocysteine levels was associated with an increased risk of ED.
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Affiliation(s)
- Z Zhang
- Department of Andrology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Z Xu
- Department of Andrology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Y Dai
- Department of Andrology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Y Chen
- Department of Andrology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
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174
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Dai Y, Niu Y, Duan H, Bassig BA, Ye M, Zhang X, Meng T, Bin P, Jia X, Shen M, Zhang R, Hu W, Yang X, Vermeulen R, Silverman D, Rothman N, Lan Q, Yu S, Zheng Y. Effects of occupational exposure to carbon black on peripheral white blood cell counts and lymphocyte subsets. Environ Mol Mutagen 2016; 57:615-622. [PMID: 27671983 PMCID: PMC6759205 DOI: 10.1002/em.22036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 07/05/2016] [Indexed: 06/06/2023]
Abstract
The International Agency for Research on Cancer has classified carbon black (CB) as a possible (Group 2B) human carcinogen. Given that most CB manufacturing processes result in the emission of various types of chemicals, it is uncertain if the adverse health effects that have been observed in CB-exposed workers are related to CB specifically or are due to other exposures. To address this issue, we conducted a cross-sectional molecular epidemiology study in China of 106 male factory workers who were occupationally exposed to pure CB and 112 unexposed male workers frequency-matched by age and smoking status from the same geographic region. Repeated personal exposure measurements were taken in workers before biological sample collection. Peripheral blood from all workers was used for the complete blood cell count and lymphocyte subsets analysis. Compared to unexposed workers, eosinophil counts in workers exposed to CB were increased by 30.8% (P = 0.07) after adjusting for potential confounders. When stratified by smoking status, statistically significant differences in eosinophils between CB exposed and unexposed workers were only present among never smokers (P = 0.040). Smoking is associated with alterations in various cell counts; however, no significant interaction between CB exposure and smoking status for any cell counts was observed. Given that inflammation, characterized in part by elevated eosinophils in peripheral blood, may be associated with increased cancer risk, our findings provide new biologic insights into the potential relationship between CB exposure and lung carcinogenesis. Environ. Mol. Mutagen. 57:589-604, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yufei Dai
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Yong Niu
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Huawei Duan
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Bryan A Bassig
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Meng Ye
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Xiao Zhang
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Tao Meng
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Ping Bin
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Xiaowei Jia
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Meili Shen
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Rong Zhang
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
- Department of Toxicology School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Wei Hu
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Xiaofa Yang
- Jiao Zuo Center for Disease Control and Prevention, Jiaozuo, China
| | - Roel Vermeulen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Debra Silverman
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Nathaniel Rothman
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland
| | - Qing Lan
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Rockville, Maryland.
| | - Shanfa Yu
- Henan Provincial Institute for Occupational Health, Zhengzhou, China.
| | - Yuxin Zheng
- Key Laboratory, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, 100050, China.
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175
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Garrick TR, Dai Y, Higa K, Srinivasan V, Weidner JW. Modeling Battery Performance Due to Intercalation Driven Volume Change in Porous Electrodes. ACTA ACUST UNITED AC 2016. [DOI: 10.1149/07211.0011ecst] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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176
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Cai A, Qi S, Su Z, Shen H, Yang Y, Cai W, Dai Y. A Pilot Metabolic Profiling Study of Patients With Neonatal Jaundice and Response to Phototherapy. Clin Transl Sci 2016; 9:216-20. [PMID: 27306191 PMCID: PMC5351341 DOI: 10.1111/cts.12401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 04/18/2016] [Accepted: 04/22/2016] [Indexed: 12/03/2022] Open
Abstract
Phototherapy has been widely used in treating neonatal jaundice, but detailed metabonomic profiles of neonatal jaundice patients and response to phototherapy have not been characterized. Our aim was to depict the serum metabolic characteristics of neonatal jaundice patients relative to controls and changes in response to phototherapy. A (1) H nuclear magnetic resonance (NMR)-based metabonomic approach was employed to study the metabolic profiling of serum from healthy infants (n = 25) and from infants with neonatal jaundice (n = 30) pre- and postphototherapy. The acquired data were processed by multivariate principal component analysis (PCA) and orthogonal partial least-squares-discriminant analysis (OPLS-DA). The PLS-DA and OPLS-DA model identified nine metabolites capable of distinguishing patients from controls. In addition, 28 metabolites such as β-glucose, α-glucose, valine, and pyruvate changed in response to phototherapy. This study offers useful information on metabolic disorders in neonatal jaundice patients and the effects of phototherapy on lipids, amino acid, and energy metabolism.
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Affiliation(s)
- A Cai
- Department of LaboratoryNanshan Affiliated Hospital of Guangdong Medical CollegeShenzhenGuangdongP.R. China
| | - S Qi
- Department of Biomedical EngineeringMedical schoolShenzhen UniversityGuangdongP.R. China
| | - Z Su
- Department of LaboratoryNanshan Affiliated Hospital of Guangdong Medical CollegeShenzhenGuangdongP.R. China
| | - H Shen
- Department of LaboratoryNanshan Affiliated Hospital of Guangdong Medical CollegeShenzhenGuangdongP.R. China
| | - Y Yang
- Department of LaboratoryNanshan Affiliated Hospital of Guangdong Medical CollegeShenzhenGuangdongP.R. China
| | - W Cai
- Department of LaboratoryNanshan Affiliated Hospital of Guangdong Medical CollegeShenzhenGuangdongP.R. China
| | - Y Dai
- Second Clinical Medical CollegeShenzhen People's HospitalJinan UniversityShenzhenGuangdong ProvinceP.R. China
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177
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Li L, Leng JH, Shi JH, Zhang JJ, Jia SZ, Li XY, Dai Y, Zhang JR, Li T, Xu XX, Liu ZZ, You SS, Chang XY, Lang JH. [A prospective study on the effects of levonorgestrel-releasing intrauterine system for adenomyosis with menorrhagia]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:424-30. [PMID: 27356477 DOI: 10.3760/cma.j.issn.0529-567x.2016.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate treatment effects of levonorgestrel-releasing intrauterine system (LNG-IUS) for adenomyosis with menorrhea in a prospective study. METHODS From December 2006 to December 2014, patients of symptomatic adenomyosis diagnosed by transvaginal ultrasound in outpatient or inpatient clinics of Peking Union Medical College Hospital were given the treatment of LNG-IUS. Before and after placement of LNG-IUS, all the patients' parameters were recorded prospectively, including scores of menstruation blood loss, carrying status of IUS, symptoms and scores of dysmenorrhea, biochemical indicators, physical parameters, menstruation patterns and adverse effects. Changes of pictorial chart scores of menstruation and distribution of anemia during follow-up were analyzed. RESULTS Totally 1 100 women meets inclusion criteria, among which 618 cases (56.18%, 618/1 100) had severe menorrhea, with median follow-up period of 28 months (range 1- 60 months), and accumulative carrying rate of 66% at 60 months follow-up. After placement of LNG-IUS, compared with baselines, pictorial chart scores and ratio of menorrhea had decreased significantly (all P<0.01), the scroes of menstruation were 157±34, 94±35, 70±33, 67±18, 67±20, 65±19, 66±19, 65±21 at 0, 3, 6, 12, 24, 36, 48 and 60 months respectively. During 24 months after placement of LNG-IUS, pictorial chart scores and distribution of anemia had improved significantly compared with preceding period (all P<0.01). We found no dependent factors predicting improvement of pictorial chart scores of menorrhea, which was neither relevant with simultaneous changes of menstruation patterns nor adverse effects (all P>0.05). CONCLUSIONS LNG-IUS is effective for adenomyosis of menorrhea. Improvement of menstruation blood loss is independent on patients characters, menstruation patterns or adverse effects.
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Affiliation(s)
- L Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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178
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Dai Y, Yan Z, Jia L, Zhang S, Gao L, Wei X, Mei Z, Liu X. The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils. J Appl Microbiol 2016; 121:163-76. [PMID: 27123875 DOI: 10.1111/jam.13164] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/26/2015] [Accepted: 01/18/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Y. Dai
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - Z. Yan
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - L. Jia
- The State Key Laboratory of Biotherapy; West China Hospital; Sichuan University; Sichuan China
| | - S. Zhang
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
| | - L. Gao
- Department of Agricultural Engineering; Chongqing Academy of Agricultural Sciences; Chongqing China
| | - X. Wei
- Department of Agricultural Engineering; Chongqing Academy of Agricultural Sciences; Chongqing China
| | - Z. Mei
- Center of Agricultural Engineering; Biogas Institute of Ministry of Agriculture; Chengdu China
| | - X. Liu
- Key Laboratory of Environmental and Applied Microbiology; Environmental Microbiology Key Laboratory of Sichuan Province; Chengdu Institute of Biology; Chinese Academy of Sciences; Sichuan China
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179
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Li L, Leng JH, Dai Y, Zhang JJ, Jia SZ, Li XY, Shi JH, Zhang JR, Li T, Xu XX, Liu ZZ, You SS, Chang XY, Lang JH. [A prospective cohort study on effects of levonorgestrel-releasing intrauterine system for adenomyosis with severe dysmenorrhea]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:345-51. [PMID: 27256441 DOI: 10.3760/cma.j.issn.0529-567x.2016.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate treatment effects of levonorgestrel-releasing intrauterine system (LNG-IUS) for adenomyosis with severe dysmenorrhea in a prospective cohort study. METHODS From December 2006 to December 2014, patients of symptomatic adenomyosis diagnosed by transvaginal ultrasound in outpatient or inpatient clinics of Peking Union Medical College Hospital were given the treatment of LNG-IUS. Before and after placement of LNG-IUS, all the patients' parameters were recorded prospectively, including symptoms and scores of dysmenorrhea, menstruation scores, biochemical indicators, physical parameters, carrying status of LNG-IUS, menstruation patterns and adverse effects. Changes of scores and patterns of pain during follow-up were analyzed. RESULTS Totally 1 100 women meets inclusion criteria, among which 640 cases (58.18%, 640/1 100) had severe dysmeorrhea, with median follow-up period of 35 months (range 1-60 months), and accumulative carrying rate of 65% at 60 months follow-up. After placement of LNG-IUS, scores of pain and ratio of severe dysmenorrhea had decreased significantly compared with baselines (all P<0.01), the scroes of visual analog scale (VAS) were 8.1±0.9, 5.5±2.4, 4.6±2.4, 3.3±2.2, 2.2±2.1, 2.2±1.8, 1.4±1.6 and 1.3±1.3 at 0, 3, 6, 12, 24, 36, 48 and 60 months respectively. During 36 months after placement of LNG-IUS, scores of pain had improved significantly compared with preceding period (all P<0.01). We found no universal dependent factors predicting improvement of pain, which was neither relevant with simultaneous changes of menstruation patterns nor adverse effects (all P>0.05). CONCLUSION LNG-IUS is effective for adenomyosis of severe dysmenorrhea. Improvement of pain is independent on patients characters, menstruation patterns or adverse effects.
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Affiliation(s)
- L Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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180
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Zhu H, Wang X, Pan H, Dai Y, Li N, Wang L, Yang H, Gong F. The Mechanism by Which Safflower Yellow Decreases Body Fat Mass and Improves Insulin Sensitivity in HFD-Induced Obese Mice. Front Pharmacol 2016; 7:127. [PMID: 27242533 PMCID: PMC4876777 DOI: 10.3389/fphar.2016.00127] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022] Open
Abstract
Objectives: Safflower yellow (SY) is the main effective ingredient of Carthamus tinctorius L. It has been reported that SY plays an important role in anti-inflammation, anti-platelet aggregation, and inhibiting thrombus formation. In present study, we try to investigate the effects of SY on body weight, body fat mass, insulin sensitivity in high fat diet (HFD)-induced obese mice. Methods: HFD-induced obese male ICR mice were intraperitoneally injected with SY (120 mg kg−1) daily. Eight weeks later, intraperitoneal insulin tolerance test (IPITT), and intraperitoneal glucose tolerance test (IPGTT) were performed, and body weight, body fat mass, serum insulin levels were measured. The expression of glucose and lipid metabolic related genes in white adipose tissue (WAT) were determined by RT-qPCR and western blot technologies. Results: The administration obese mice with SY significantly reduced the body fat mass of HFD-induced obese mice (P < 0.05). IPITT test showed that the insulin sensitivity of SY treated obese mice were evidently improved. The mRNA levels of insulin signaling pathway related genes including insulin receptor substrate 1(IRS1), PKB protein kinase (AKT), glycogen synthase kinase 3β (GSK3β) and forkhead box protein O1(FOXO1) in mesenteric WAT of SY treated mice were significantly increased to 1.9- , 2.8- , 3.3- , and 5.9-folds of that in HFD-induced control obese mice, respectively (P < 0.05). The protein levels of AKT and GSK3β were also significantly increased to 3.0 and 5.2-folds of that in HFD-induced control obese mice, respectively (P < 0.05). Meanwhile, both the mRNA and protein levels of peroxisome proliferator-activated receptorgamma coactivator 1α (PGC1α) in inguinal subcutaneous WAT of SY group were notably increased to 2.5 and 3.0-folds of that in HFD-induced control obese mice (P < 0.05). Conclusions: SY significantly reduce the body fat mass, fasting blood glucose and increase insulin sensitivity of HFD-induced obese mice. The possible mechanism is to promote the browning of subcutaneous WAT and activate the IRS1/AKT/GSK3β pathway in visceral WAT. Our study provides an important experimental evidence for developing SY as a potential anti-obesity and anti-diabetic drug.
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Affiliation(s)
- Huijuan Zhu
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Xiangqing Wang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Hui Pan
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Yufei Dai
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Naishi Li
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Linjie Wang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Hongbo Yang
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
| | - Fengying Gong
- Key Laboratory of Endocrinology of National Health and Family Planning Commission, Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science Beijing, China
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181
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Bin P, Shen M, Li H, Sun X, Niu Y, Meng T, Yu T, Zhang X, Dai Y, Gao W, Gu G, Yu S, Zheng Y. Increased levels of urinary biomarkers of lipid peroxidation products among workers occupationally exposed to diesel engine exhaust. Free Radic Res 2016; 50:820-30. [PMID: 27087348 DOI: 10.1080/10715762.2016.1178738] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Diesel engine exhaust (DEE) was found to induce lipid peroxidation (LPO) in animal exposure studies. LPO is a class of oxidative stress and can be reflected by detecting the levels of its production, such as malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE), and etheno-DNA adducts including 1,N(6)-etheno-2'-deoxyadenosine (ɛdA) and 3,N(4)-etheno-2'-deoxycytidine (ɛdC). However, the impact of DEE exposure on LPO has not been explored in humans. In this study, we evaluated urinary MDA, 4-HNE, ɛdA, and ɛdC levels as biomarkers of LPO among 108 workers with exclusive exposure to DEE and 109 non-DEE-exposed workers. Results showed that increased levels of urinary MDA and ɛdA were observed in subjects occupationally exposed to DEE before and after age, body mass index (BMI), smoking status, and alcohol use were adjusted (all p < 0.001). There was a statistically significant relationship between the internal exposure dose (urinary ΣOH-PAHs) and MDA, 4-HNE, and ɛdA (all p < 0.001). Furthermore, significant increased relations between urinary etheno-DNA adduct and MDA, 4-HNE were observed (all p < 0.05). The findings of this study suggested that the level of LPO products (MDA and ɛdA) was increased in DEE-exposed workers, and urinary MDA and ɛdA might be feasible biomarkers for DEE exposure. LPO induced DNA damage might be involved and further motivated the genomic instability could be one of the pathogeneses of cancer induced by DEE-exposure. However, additional investigations should be performed to understand these observations.
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Affiliation(s)
- Ping Bin
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Meili Shen
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Haibin Li
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Xin Sun
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Yong Niu
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Tao Meng
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Tao Yu
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Xiao Zhang
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Yufei Dai
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
| | - Weimin Gao
- b Department of Environmental Toxicology , The Institute of Environmental and Human Health, Texas Tech University , Lubbock , TX , USA
| | - Guizhen Gu
- c Henan Provincial Institute of Occupational Health , Zhengzhou , Henan , China
| | - Shanfa Yu
- c Henan Provincial Institute of Occupational Health , Zhengzhou , Henan , China
| | - Yuxin Zheng
- a Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention , Beijing , China
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182
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Xu J, Chen A, Xiao J, Jiang Z, Tian Y, Tang Q, Cao P, Dai Y, Krainik A, Shen J. Evaluation of tumour vascular distribution and function using immunohistochemistry and BOLD fMRI with carbogen inhalation. Clin Radiol 2016; 71:1255-1262. [PMID: 27170218 DOI: 10.1016/j.crad.2016.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 02/18/2016] [Accepted: 04/06/2016] [Indexed: 10/21/2022]
Abstract
AIM To evaluate oxygenation changes in rat subcutaneous C6 gliomas using blood-oxygen-level dependent (BOLD) functional magnetic resonance imaging (fMRI) combined with non-haemodynamic response function (non-HRF) analysis. MATERIALS AND METHODS BOLD fMRI were performed during carbogen inhalation in 20 Wistar rats bearing gliomas. Statistical maps of spatial oxygenation changes were computed by a dedicated non-HRF analysis algorithm. Three types of regions of interest (ROIs) were defined: (1) maximum re-oxygenation zone (ROImax), (2) re-oxygenation zones that were less than the maximum re-oxygenation (ROInon-max), and (3) zones without significant re-oxygenation (ROInone). The values of percent BOLD signal change (PSC), percent enhancement (ΔSI), and significant re-oxygenation (T) were extracted from each ROI. Tumours were sectioned for histology using the fMRI scan orientation and were stained with haematoxylin and eosin and CD105. The number of microvessels (MVN) in each ROI was counted. Differences and correlations among the values for T, PSC, ΔSI, and MVN were determined. RESULTS After carbogen inhalation, the PSC significantly increased in the ROImax areas (p<0.01) located in the tumour parenchyma. No changes occurred in any of the ROInone areas (20/20). Some changes occurred in a minority of the ROInon-max areas (3/60) corresponding to tumour necrosis. MVN and PSC (R=0.59, p=0.01) were significantly correlated in the ROImax areas. In the ROInon-max areas, MVN was significantly correlated with PSC (R=0.55, p=0.00) and ΔSI (R=0.37, p=0.00). CONCLUSIONS Statistical maps obtained via BOLD fMRI with non-HRF analysis can assess the re-oxygenation of gliomas.
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Affiliation(s)
- J Xu
- Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - A Chen
- Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - J Xiao
- Department of Radiology, The Central Hospital of Wuhan, Wuhan, China
| | - Z Jiang
- Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China; Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.
| | - Y Tian
- Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China; Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Q Tang
- Department of Radiology, Wuxi People's Hospital, Wuxi, China
| | - P Cao
- Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Y Dai
- Magnetic Resonance Imaging Institute for Biomedical Research, Wayne State University, Detroit, MI, USA
| | - A Krainik
- Department of Neuroradiology and MRI, CHU Grenoble-IFR1, Grenoble, France
| | - J Shen
- Department of Radiology, The Second Affiliated Hospital of Soochow University, Suzhou, China
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Meng T, Niu Y, Miao P, Ji Y, Bin P, Dai Y, Zheng Y. [Optimization of primary hepatocytes model and study on the cytotoxicity of styrene and styrene oxide]. Wei Sheng Yan Jiu 2016; 45:367-375. [PMID: 27459796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To establish a model in vitro for primary cultured mouse hepatocytes with high viability and function, and evaluate the acute toxicity of the primary hepatocytes exposed to the chemicals such as styrene and styrene oxide (SO). METHODS Based on the classical method, the two-step collagenase digestion method was optimized by reverse and intermittent perfusion, restriction of digestion time as well as purification of percoll liquid. Hepatocytes were isolated from BALB/C mouse by an improved isolated method and then cultured in monolayer and sandwich configuration. The primary cultured hepatocytes model was assessed by various indexes including cell morphology, cell viability, intracellular glycogen granules, as well as albumin (ALB), lactate dehydrogenase (LDH), alanine aminotransferase (ALT) and blood urine nitrogen (BUN) levels in the supernatant. In addition, the primary cultured hepatocytes were treated with various concentrations from 0.2 to 25 micromol/L of styrene and styrene oxide during different time from 3 to 48 hours. The cytotoxicity induced by the two toxicants was assessed by CCK-8 and LDH assays. RESULTS On average, the isolation using this improved method resulted in the cell viability of (90.3 +/- 5.2) %, the cell purity of (95.3 +/- 4.2)% and the yield of (2.4 +/- 0.9) x 10(7) viable cells. More than 90% cells showed a typical morphological feature of hepatocytes in sandwich configuration within 7 days, and contained a large number of glycogen granules on the third day. The ALB secretion, ALT and LDH leakage and BUN synthesis as well as cell viability fluctuated during 8 days, and they stayed at stable levels between 3 to 7 days in sandwich configuration. But they fluctuated during 6 days in monolayer configuration. In comparison with the monolayer configuration, the levels of ALB and BUN were distinctly increased and the levels of LDH and ALT were significantly decreased in sandwich configuration. The levels of ALB [ (1.42 +/- 0.20) g/L ] and BUN [(1.97 +/- 0.22) mmol/L] as well as cell viability were the highest, while the levels of LDH [ (7.30 +/- 2.33) U/L] and ALT [ (6.51 +/- 1.86) U/L] were the lowest in sandwich configuration on the third day. The relative low cytotoxicity and high cell survival rate ( more than 90%) were shown in treated hepatocytes with styrene and styrene oxide within 6 hours by CCK-8 and LDH measurements, and there was no distinct difference in the determination of cytotoxicity between the two methods. With the prolonged exposure time, the cell survival rate was lower by CCK-8 assay (less than 85%) than the one by LDH assay. The relative obvious cytotoxicity and low cell survival rate (about 85%) by CCK-8 method were revealed in treated cells with 5 micromol/L of styrene and styrene oxide for 24 hours, but there was no significant difference between CCK-8 and LDH assays. With the increase of the concentrations, the cell survival rate was lower by CCK-8 assay (less than 80%) compared with LDH assay. CONCLUSION The improved two-step collagenase digestion method combination with sandwich culture method might maintain the morphology and function of primary cultured mouse hepatocytes for seven days. The cytotoxic effects of styrene and styrene oxide might be accurately evaluated by means of primary cultured hepatocyte model from 3 to 7 days. The chemicals might have major adverse effects on the functions of the organelles in hepatocytes such as mitochondria, but little influence to the cell membrane damage.
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184
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Ju R, Jia Q, Meng T, Wang C, Chen X, Niu Y, Meng X, Geng X, Ma Y, Jia Q, Miao P, Dai Y, Zheng Y, Shao H. [Effect of occupational exposure to toluene diisocyanate on workers' health]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:23-6. [PMID: 27014811 DOI: 10.3760/cma.j.issn.1001-9391.2016.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the effect of occupational exposure to toluene diisocyanate (TDI) on the workers' health. METHODS A total of 76 workers exposed to TDI (exposure group) and 64 management staff members (control group) were selected from a factory as the study subjects. Area sampling was performed for the place with exposure to TDI according to the method in GBZ 159-2004 Specifications of air sampling for hazardous substances monitoring in the workplace, and gas chromatography was applied to measure the concentration of TDI in workplace air. The workers' personal information was collected with questionnaire, pulmonary ventilation function was determined with a portable spirometer, hematological parameters were analyzed by automatic blood analyzer and blood chemistry analyzer, and the indicators of oxidative damage and energy metabolism were measured by the reagent kit provided by Nanjing Jiancheng Bioengineering Institute. SPSS 17 software was applied for statistical analysis. RESULTS The exposure group had significantly lower forced vital capacity (FVC), forced expiratory volume in 1 second(FEV1.0), and FEV1.0/FVC ratio than the control group (P <0.05). Compared with the control group, the exposure group had significantly higher red blood cell count, platelet distribution width, mean platelet volume, lymphocyte count, and neutrophil count(P<0.01), and significantly lower activities of lactate dehydrogenase(LDH), superoxide dismutase, and succinodehydrogenase (SDH)(P <0.01). In the exposure group, the length of exposure was negatively correlated with the activities of SDH and LDH in the serum (r=-0.319, P <0.05; r=-0.239, P <0.05), and the length of exposure was not found to be correlated with the activity of SOD and pulmonary function indices. CONCLUSION TDI can induce inflammatory response and lung ventilation function impairment in workers exposed to TDI, as well as oxidative stress and imbalance of energy metabolism. Therefore, it can cause damage to workers' health, and protective measures should be enhanced.
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Affiliation(s)
- Rui Ju
- Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine Shandong Institude of Prevention and Control of Occupational Health and Occupational Disease, Jinan 250062, China
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185
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Dai Y, Eggers B, Metzler M, Künzel D, Groß A, Jacob T, Ziener U. Cyanophenyl vs. pyridine substituent: impact on the adlayer structure and formation on HOPG and Au(111). Phys Chem Chem Phys 2016; 18:6668-75. [PMID: 26871757 DOI: 10.1039/c5cp07853a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new cyano substituted bis(terpyridine) derivative CN-BTP was synthesized and its adsorption on highly oriented pyrolytic graphite (HOPG) and Au(111) was investigated. CN-BTP is closely related to the previously investigated 2,4'-BTP, where the cyanophenyl groups are replaced by pyridine moieties. The scanning tunneling microscopy (STM) investigation of CN-BTP at the liquid|HOPG interface shows a highly ordered herringbone structure that is stabilized by double weak intermolecular C-HN hydrogen bonds, partially through the -CN substituents, which is different from the most stable square structure of 2,4'-BTP. The adsorption processes were investigated using cyclic voltammetry (CV) on Au(111) in a neutral phosphate buffer. A fast and full adlayer formation could be observed with CN-BTP, whereas an extremely slow process with 2,4'-BTP under the same conditions was found. Our data show that the CN substituents on BTP not only change the structure of the monolayer at the liquid|HOPG interface, but also accelerate the phase transition process in the electrolyte dramatically. This could be explained by the adlayer-substrate interactions, which is supported by DFT calculations. Our findings might be extended more generally to further pyridine comprising self-assembling molecules to fine-tune the adlayer structure and phase transition/adsorption kinetics by replacing pyridine by cyanophenyl moieties.
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Affiliation(s)
- Y Dai
- Institut für Organische Chemie III, Universität Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany.
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186
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Dai Y, Zhang X, Zhang R, Zhao X, Duan H, Niu Y, Huang C, Meng T, Ye M, Bin P, Shen M, Jia X, Wang H, Yu S, Zheng Y. Long-term exposure to diesel engine exhaust affects cytokine expression among occupational population. Toxicol Res (Camb) 2016; 5:674-681. [PMID: 30090380 PMCID: PMC6060680 DOI: 10.1039/c5tx00462d] [Citation(s) in RCA: 10] [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] [Received: 12/06/2015] [Accepted: 01/31/2016] [Indexed: 11/21/2022] Open
Abstract
Diesel engine exhaust (DEE) is a predominant contributor to urban air pollution. The International Agency for Research on Cancer classified DEE as a group I carcinogen. Inflammatory response is considered to be associated with various health outcomes including carcinogenesis. However, human data linking inflammation with long-term DEE exposure are still lacking. In this study, a total of 137 diesel engine testing workers with an average exposure of 8.2 years and 108 unexposed controls were enrolled. Peripheral blood samples were collected from all subjects, and the association of DEE exposure with inflammatory biomarkers was analyzed. Overall, DEE exposed workers had a significant increase in the C-reactive protein (CRP) and a significant decrease in cytokines including interleukin (IL)-1β, IL-6, IL-8, and macrophage inflammatory protein (MIP)-1β compared to controls after adjusting for age, BMI, smoking status, and alcohol use, and findings were highly consistent when stratified by smoking status. In addition, exposure time dependent patterns for IL-6 and CRP were also found (Ptrend = 0.006 and 0.026, respectively); however, the levels of IL-1β and MIP-1β were significantly lower in subjects with a DEE working time of less than 10 years compared with the controls and then recovered to control levels in workers exposed for >10 years. There were no significant differences in blood cell counts and major lymphocyte subsets between exposed workers and the controls. Our results provide epidemiological evidence for the relationship between DEE exposure and immunotoxicity considering the important roles of cytokines in immunological processes.
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Affiliation(s)
- Yufei Dai
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Xiao Zhang
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Rong Zhang
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
- Department of Toxicology , School of Public Health , Hebei Medical University , Shijiazhuang , 050017 , China
| | - Xuezheng Zhao
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
- Beijing Xicheng District Tianqiao Community Health Service Center , Beijing , 100050 , China
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Chuanfeng Huang
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Meng Ye
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Ping Bin
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Meili Shen
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
| | - Xiaowei Jia
- School and Hospital of Stomatology , Peking University , Beijing , 100081 , China
| | - Haisheng Wang
- Luoyang Center for Disease Control and Prevention , Luoyang , Henan Province 471000 , China
| | - Shanfa Yu
- Henan Provincial Institute for Occupational Health , Zhengzhou , 450052 , China
| | - Yuxin Zheng
- Key Laboratory of Chemical Safety and Health , National Institute for Occupational Health and Poison Control , Chinese Center for Disease Control and Prevention , Beijing , 10050 , China . ; ; Tel: +86-10-83132593
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187
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Shen M, Bin P, Li H, Zhang X, Sun X, Duan H, Niu Y, Meng T, Dai Y, Gao W, Yu S, Gu G, Zheng Y. Increased levels of etheno-DNA adducts and genotoxicity biomarkers of long-term exposure to pure diesel engine exhaust. Sci Total Environ 2016; 543:267-273. [PMID: 26588802 DOI: 10.1016/j.scitotenv.2015.10.165] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/27/2015] [Accepted: 10/31/2015] [Indexed: 06/05/2023]
Abstract
Etheno-DNA adducts are biomarkers for assessing oxidative stress. In this study, the aim was to detect the level of etheno-DNA adducts and explore the relationship between the etheno-DNA adducts and genotoxicity biomarkers of the diesel engine exhaust (DEE)-exposed workers. We recruited 86 diesel engine testing workers with long-term exposure to DEE and 99 non-DEE-exposed workers. The urinary mono-hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) and etheno-DNA adducts (εdA and εdC) were detected by HPLC-MS/MS and UPLC-MS/MS, respectively. Genotoxicity biomarkers were also evaluated by comet assay and cytokinesis-block micronucleus assay. The results showed that urinary εdA was significantly higher in the DEE-exposed workers (p<0.001), exhibited 2.1-fold increase compared with the non-DEE-exposed workers. The levels of urinary OH-PAHs were positively correlated with the level of εdA among all the study subjects (p<0.001). Moreover, we found that the increasing level of εdA was significantly associated with the increased olive tail moment, percentage of tail DNA, or frequency of micronucleus in the study subjects (p<0.01). No significant association was observed between the εdC level and any measured genotoxicity biomarkers. In summary, εdA could serve as an indicator for DEE exposure in the human population.
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Affiliation(s)
- Meili Shen
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Ping Bin
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Haibin Li
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Xiao Zhang
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Xin Sun
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Huawei Duan
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Yong Niu
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Tao Meng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Yufei Dai
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
| | - Weimin Gao
- Department of Environmental Toxicology, The Institute of Environmental and Human Health, Texas Tech University, Lubbock, TX 79409, USA.
| | - Shanfa Yu
- Henan Provincial Institute for Occupational Health, Zhengzhou, 450052, China.
| | - Guizhen Gu
- Henan Provincial Institute for Occupational Health, Zhengzhou, 450052, China.
| | - Yuxin Zheng
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
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188
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Li L, Chen F, Dai Y, Wu J, Shao J, Li HY. Fe-assisted Ru clusters supported on porous and graphitic carbon for ammonia decomposition to COx free hydrogen. RSC Adv 2016. [DOI: 10.1039/c6ra21211e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Fe-assisted Ru clusters catalysts showed significantly improved performance for NH3 decomposition compared to that of Fe–C and Ru/C# catalysts.
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Affiliation(s)
- L. Li
- School of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- China
| | - F. Chen
- School of Chemical Biology and Materials Engineering
- Suzhou University of Science and Technology
- China
| | - Y. Dai
- School of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- China
| | - J. Wu
- School of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- China
| | - J. L. Shao
- School of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- China
| | - H. Y. Li
- School of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- China
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189
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Duan H, Jia X, Zhai Q, Ma L, Wang S, Huang C, Wang H, Niu Y, Li X, Dai Y, Yu S, Gao W, Chen W, Zheng Y. Long-term exposure to diesel engine exhaust induces primary DNA damage: a population-based study. Occup Environ Med 2015; 73:83-90. [DOI: 10.1136/oemed-2015-102919] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 09/27/2015] [Indexed: 11/04/2022]
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190
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Huang SX, Liang JL, Sui WG, Lin H, Xue W, Chen JJ, Zhang Y, Gong WW, Dai Y, Ou ML. EDA mutation as a cause of hypohidrotic ectodermal dysplasia: a case report and review of the literature. Genet Mol Res 2015; 14:10344-51. [PMID: 26345974 DOI: 10.4238/2015.august.28.21] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Ectodermal dysplasia (ED) represents a collection of rare disorders that result from a failure of development of the tissues derived from the embryonic ectoderm. ED is often associated with hair, teeth, and skin abnormalities, which are serious conditions affecting the quality of life of the patient. To date, a large number of genes have been found to be associated with this syndrome. Here, we report a patient with hypohidrotic ED (HED) without family history. We identified that this patient's disorder arises from an X-linked HED with a mutation in the EDA gene (G299D) found by whole-exome sequencing. In addition, in this paper we summarize the disease-causing mutations based on current literature. Overall, recent clinical and genetic research involving patients with HED have uncovered a large number of pathogenic mutations in EDA, which might contribute to a full understanding of the function of EDA and the underlying mechanisms of HED caused by EDA mutations.
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Affiliation(s)
- S X Huang
- Medical Center of Stomatology of the Second Clinical Medical College, Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | | | - W G Sui
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - H Lin
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - W Xue
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - J J Chen
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - Y Zhang
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - W W Gong
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
| | - Y Dai
- Clinical Medical Research Center of the Second Clinical Medical College, Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - M L Ou
- Guangxi Key Laboratory of Metabolic Diseases Research, Central Laboratory of Guilin 181st Hospital, Guilin, China
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191
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Wang C, Niu Y, Chi D, Zeng Y, Liu H, Dai Y, Li J. Influence of Delipation on the Energy Metabolism in Pig Parthenogenetically Activated Embryos. Reprod Domest Anim 2015; 50:826-33. [PMID: 26303295 DOI: 10.1111/rda.12596] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/27/2015] [Indexed: 01/25/2023]
Abstract
This study was designed not only to measure the effect of delipation on the developmental viability of pig parthenogenetically activated (PA) embryos, but also to evaluate the changes of mitochondria DNA (mtDNA), reactive oxygen species (ROS) level, adenosine triphosphate (ATP) content and gene (Acsl3, Acadsb, Acaa2, Glut1) expression level at different stages after delipation. Results showed that no effect was observed on the cleavage ability, but significant lower blastocyst rate was obtained in delipated embryos. Copy number of mtDNA decreased gradually from MII to four-cell stages and subsequently kept consistent with blastocyst stage both in delipated and control embryos, but the copy number of mtDNA in delipated embryos was similar to that in the control groups no matter at which developmental stage was observed. Both in delipated and control embryos, ATP content progressive decreased from one-cell to blastocyst stages, while just at one-cell stage, a significant decrease of ATP level was observed in delipated embryos compared with that of control. The level of ROS increased obviously after delipation at cleavage stage, but no difference was seen at blastocyst stage. Finally, the expression level of genes related to fatty acids beta-oxidation (Acadsb and Acaa2) was decreased, while the expression level of genes related to glucose metabolism (Glut 1) was upregulated after delipation. In conclusion, the reduction of lipids in pig oocytes will affect the developmental competence of pig PA embryos by disturbed energy metabolism and ROS stress.
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Affiliation(s)
- C Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Y Niu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - D Chi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Y Zeng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - H Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Y Dai
- State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - J Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
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192
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Curry E, Cheraghchi-Bashi-Astaneh A, Chen M, Cunnea P, De Sousa C, Maginn E, Dai Y, Liu E, Wasan H, Mills G, Bowtell D, Gabra H, Stronach EA. Abstract AS20: DNA-PKcs is amplified in high grade serous ovarian cancer (HGSC), correlates with poor outcome and drives resistance to platinum therapy via the AKT signaling pathway. Clin Cancer Res 2015. [DOI: 10.1158/1557-3265.ovcasymp14-as20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
High grade serous ovarian cancer is typified by p53 mutation, high degrees of genomic instability and the development of chemo-resistance. Genomic translocations result from incorrectly repaired DNA double strand breaks (DSBs). DNA-PKcs is a central catalytic component of the error prone non-homologous end joining (NHEJ) DSB repair mechanism. We report here that DNA-PKcs is frequently amplified in copy number in HGSC and that amplification correlates with higher DNA-PKcs gene expression and poorer patient outcome (PFS/OS) using both in-house and publicly available datasets (TCGA). Targeting DNA-PKcs, pharmacologically or by RNAi, enhances apoptosis in response to platinum treatment in platinum resistant cell lines and primary models. Furthermore we report that inhibition of DNA-PK restores response to cisplatin in chemoresistant ovarian cancer cells in vivo. SKOV-3 tumor xenografts were implanted subcutaneously into Balb/c Nu/Nu mice and treated with DNA-PKcs inhibitor NU7441 for 2 weeks alone or in combination with cisplatin. DNA-PK inhibition or cisplatin treatment alone were ineffective however in combination they decreased tumor growth at 14 days by 90%, relative to platinum only treatment. On investigating the mechanism of DNA-PKcs mediated chemoresistance we revealed that, in response to DNA damage, DNA-PKcs phosphorylates AKT on serine residue 473 in the nucleus of platinum resistant ovarian tumor cells, but not sensitive cells from the same patient. Phosphorylation at AKT threonine 308 is unaffected and DNA-PK inhibition does not interfere with insulin-mediated phosphorylation of AKT S473. DNA-PK mediated AKT activation in chemoresistant cells results in inhibitory phosphorylation of the pro-apoptotic protein BAD and stabilisation of the anti-apoptotic Bcl-2 protein resulting in the observed attenuation of apoptotic response to platinum treatment. DNA-PK inhibition is an attractive therapeutic strategy for resensitising resistant tumors to platinum based therapy, directly linking the DNA damage caused by platinum to the pro-survival AKT pathway, without interfering with normal physiological roles of AKT.
Citation Format: Curry E, Cheraghchi-Bashi-Astaneh A, Chen M, Cunnea P, De Sousa C, Maginn E, Dai Y, Liu E, Wasan H, Mills G, Bowtell D, Gabra H & Stronach EA. DNA-PKcs is amplified in high grade serous ovarian cancer (HGSC), correlates with poor outcome and drives resistance to platinum therapy via the AKT signaling pathway [abstract]. In: Proceedings of the 10th Biennial Ovarian Cancer Research Symposium; Sep 8-9, 2014; Seattle, WA. Philadelphia (PA): AACR; Clin Cancer Res 2015;21(16 Suppl):Abstract nr AS20.
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Affiliation(s)
- E Curry
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | | | - M Chen
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - P Cunnea
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - C De Sousa
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - E Maginn
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - Y Dai
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - E Liu
- 2The Jackson Laboratory, Sacramento, CA, USA,
| | - H Wasan
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - G Mills
- 3MD Anderson Cancer Centre, Houston, TX, USA,
| | - D Bowtell
- 4Peter MacCallum Cancer Centre, University of Melbourne, Austrlia
| | - H Gabra
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
| | - EA Stronach
- 1Molecular Therapy Lab, Ovarian Cancer Action Research Centre, Imperial College London, UK,
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Dai Y, Chen Y, Huang H, Zhou W, Niu Y, Zhang M, Bin P, Dong H, Jia Q, Huang J, Yi J, Liao Q, Li H, Teng Y, Zang D, Zhai Q, Duan H, Shen J, He J, Meng T, Sha Y, Shen M, Ye M, Jia X, Xiang Y, Huang H, Wu Q, Shi M, Huang X, Yang H, Luo L, Li S, Li L, Zhao J, Li L, Wang J, Zheng Y. Performance of genetic risk factors in prediction of trichloroethylene induced hypersensitivity syndrome. Sci Rep 2015; 5:12169. [PMID: 26190474 PMCID: PMC4507183 DOI: 10.1038/srep12169] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 06/22/2015] [Indexed: 11/09/2022] Open
Abstract
Trichloroethylene induced hypersensitivity syndrome is dose-independent and potentially life threatening disease, which has become one of the serious occupational health issues and requires intensive treatment. To discover the genetic risk factors and evaluate the performance of risk prediction model for the disease, we conducted genomewide association study and replication study with total of 174 cases and 1761 trichloroethylene-tolerant controls. Fifty seven SNPs that exceeded the threshold for genome-wide significance (P < 5 × 10(-8)) were screened to relate with the disease, among which two independent SNPs were identified, that is rs2857281 at MICA (odds ratio, 11.92; P meta = 1.33 × 10(-37)) and rs2523557 between HLA-B and MICA (odds ratio, 7.33; P meta = 8.79 × 10(-35)). The genetic risk score with these two SNPs explains at least 20.9% of the disease variance and up to 32.5-fold variation in inter-individual risk. Combining of two SNPs as predictors for the disease would have accuracy of 80.73%, the area under receiver operator characteristic curves (AUC) scores was 0.82 with sensitivity of 74% and specificity of 85%, which was considered to have excellent discrimination for the disease, and could be considered for translational application for screening employees before exposure.
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Affiliation(s)
- Yufei Dai
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Ying Chen
- BGI-Tech, BGI-Shenzhen, Shenzhen, China
| | - Hanlin Huang
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, China
| | - Wei Zhou
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | - Yong Niu
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | | | - Ping Bin
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Haiyan Dong
- Center for Disease Control and Prevention of Yunnan province, Kunming, Yunnan, China
| | - Qiang Jia
- Shandong Academy of Occupational Health and Occupational Medicine, Jinan, China
| | - Jianxun Huang
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, China
| | - Juan Yi
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | | | - Haishan Li
- Institute of chemicals safety, Chinese academy of inspection and quarantine, Beijing, China
| | - Yanxia Teng
- Health Supervision Institutionof Dongcheng Health Bureau, Beijing, China
| | - Dan Zang
- Food And Drug Administration Of Beijing Fengtai District, Beijing, China
| | - Qingfeng Zhai
- Weifang Medical University, Weifang, Shandong, China
| | - Huawei Duan
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Juan Shen
- BGI-Tech, BGI-Shenzhen, Shenzhen, China
| | - Jiaxi He
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | - Tao Meng
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Yan Sha
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | - Meili Shen
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Meng Ye
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Xiaowei Jia
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
| | - Yingping Xiang
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | - Huiping Huang
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | - Qifeng Wu
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, China
| | | | - Xianqing Huang
- Hospital for Occupational Diseases Control of Shenzhen, Shenzhen, China
| | | | | | - Sai Li
- BGI-Tech, BGI-Shenzhen, Shenzhen, China
| | - Lin Li
- BGI-Tech, BGI-Shenzhen, Shenzhen, China
| | | | - Laiyu Li
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou, China
| | - Jun Wang
- BGI-Tech, BGI-Shenzhen, Shenzhen, China
| | - Yuxin Zheng
- Key laboratory of Chemical Safety and Health, Chinese Centre for Disease Control and Prevention. National Institute for Occupational Health and Poison Control, Chinese Centre for Disease Control and Prevention, Beijing, 100050, China
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194
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Pan CB, Zha FX, Song YX, Shao J, Dai Y, Chen XR, Ye JY, Wang SM. Spectral and spatial resolving of photoelectric property of femtosecond laser drilled holes of GaSb(1-x)Bi(x). Opt Lett 2015; 40:3392-3395. [PMID: 26176477 DOI: 10.1364/ol.40.003392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Femtosecond laser drilled holes of GaSbBi were characterized by the joint measurements of photoconductivity (PC) spectroscopy and laser-beam-induced current (LBIC) mapping. The excitation light in PC was focused down to 60 μm presenting the spectral information of local electronic property of individual holes. A redshift of energy band edge of about 6-8 meV was observed by the PC measurement when the excitation light irradiated on the laser drilled holes. The spatial resolving of photoelectric property was achieved by the LBIC mapping which shows "pseudo-holes" with much larger dimensions than the geometric sizes of the holes. The reduced LBIC current with the pseudo-holes is associated with the redshift effect indicating that the electronic property of the rim areas of the holes is modified by the femtosecond laser drilling.
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195
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Aleo CL, Murchison AP, Dai Y, Hark LA, Mayro EL, Collymore B, Haller JA. Improving eye care follow-up adherence in diabetic patients with ocular abnormalities: the effectiveness of patient contracts in a free, pharmacy-based eye screening. Public Health 2015; 129:996-9. [PMID: 26119987 DOI: 10.1016/j.puhe.2015.05.012] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 03/04/2015] [Accepted: 05/13/2015] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Patient contracts are increasingly utilized in medical practice and have the potential to improve health outcomes in high-risk populations. However, as a relatively new tool, there has been limited research regarding the efficacy of patient contracts. Diabetic retinopathy (DR) is one of the leading causes of vision impairment in adults in the US and only 50-60% of adults with diabetes adhere to annual dilated fundus exam recommendations. This study aimed to evaluate the impact of patient contracts on follow-up adherence in diabetic patients with ocular abnormalities after a free, pharmacy-based eye screening. STUDY DESIGN This prospective study implemented a non-invasive, non-mydriatic fundus camera in an urban, community-based pharmacy setting to screen for ocular diseases in patients with diabetes. Patients were assigned to the contract or non-contract group. Patients who signed a contract agreed to: 1) review their results with their primary care doctor, 2) follow-up with an ophthalmologist if their results were abnormal, and 3) inform research staff if/when they completed an eye care appointment. All study participants and their primary care doctors were notified of their results via mail. Follow-up questionnaires were administered to all patients by telephone three months after the screening results. RESULTS 500 patients were screened and 113 (22.6%) had abnormal results. Of the patients who had abnormal results, 83 (74.3%) were able to be contacted. Of the 83 patients who were able to be contacted, the majority of patients were African American (73.5%) and female (56.6%). The mean age was 54.7 years. Of those, 34 (41.0%) adhered to follow-up recommendations. There was no significant difference in follow-up adherence between the contract (38.1%) and non-contract group (43.9%) (P = 0.59). In addition, 70.4% of patients did not comply with at least one measure of the contract agreement. CONCLUSION Contracts did not increase follow-up adherence to eye appointments in diabetic patients with ocular abnormalities. The majority of patients did not comply with their contract and follow-up adherence was low in both groups. Most research has yielded mixed results regarding the efficacy of contracts in improving health outcomes. Therefore, different types of contracts or other patient-centered tools should be evaluated in order to increase follow-up adherence in patients at high risk for DR.
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Affiliation(s)
- C L Aleo
- Wills Eye Hospital, Research, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA.
| | - A P Murchison
- Wills Eye Hospital, Emergency Department, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA
| | - Y Dai
- Wills Eye Hospital, Research, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA
| | - L A Hark
- Research Department and Glaucoma, Research Center, Wills Eye Hospital, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA
| | - E L Mayro
- Wills Eye Hospital, Research, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA
| | - B Collymore
- Wills Eye Hospital, Research, 840 Walnut Street, Suite 802, Philadelphia, PA 19107, USA
| | - J A Haller
- Wills Eye Hospital, 840 Walnut Street 1510, Philadelphia, PA 19107, USA
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196
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Zhang L, Sun J, Liu Z, Dai Y, Luo Z, Jiang X, Li Z, Li Y, Cao P, Zhou Y, Zeng Z, Tang A, Li X, Li X, Xiang J, Li G. Mesenchymal stem cells regulate cytoskeletal dynamics and promote cancer cell invasion through low dose nitric oxide. Curr Mol Med 2015; 14:749-61. [PMID: 24894170 DOI: 10.2174/1566524014666140724102301] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 02/14/2014] [Accepted: 02/19/2014] [Indexed: 12/15/2022]
Abstract
Bone marrow-derived mesenchymal stem cells (BMSCs) can be recruited to tumor sites and integrate into the stroma of tumors. When co-cultured with BMSCs, otherwise weakly metastatic nasopharyngeal carcinoma cells (NPC) showed improved metastatic ability. BMSCs in the tumor environment displayed the characteristics of macrophages. Nitric oxide produced by BMSCs in tumor environment could translocate caldesmon to podosome in Ca2+/calmodulin manner and promoted metastatic ability of NPC cells through invadopodia formation, with which the NPC cells degrade the extracellular matrix. Thus, we concluded that the BMSCs promoted cell migration and invasion through nitric oxide-induced paracrine signals.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - G Li
- (J. Xiang) Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya Medical School, Central South University, Changsha, Hunan, P.R. China.
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197
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Smith EN, Ghia EM, DeBoever CM, Rassenti LZ, Jepsen K, Yoon KA, Matsui H, Rozenzhak S, Alakus H, Shepard PJ, Dai Y, Khosroheidari M, Bina M, Gunderson KL, Messer K, Muthuswamy L, Hudson TJ, Harismendy O, Barrett CL, Jamieson CHM, Carson DA, Kipps TJ, Frazer KA. Genetic and epigenetic profiling of CLL disease progression reveals limited somatic evolution and suggests a relationship to memory-cell development. Blood Cancer J 2015; 5:e303. [PMID: 25860294 PMCID: PMC4450323 DOI: 10.1038/bcj.2015.14] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 01/28/2015] [Accepted: 02/02/2015] [Indexed: 01/01/2023] Open
Abstract
We examined genetic and epigenetic changes that occur during disease progression from indolent to aggressive forms of chronic lymphocytic leukemia (CLL) using serial samples from 27 patients. Analysis of DNA mutations grouped the leukemia cases into three categories: evolving (26%), expanding (26%) and static (47%). Thus, approximately three-quarters of the CLL cases had little to no genetic subclonal evolution. However, we identified significant recurrent DNA methylation changes during progression at 4752 CpGs enriched for regions near Polycomb 2 repressive complex (PRC2) targets. Progression-associated CpGs near the PRC2 targets undergo methylation changes in the same direction during disease progression as during normal development from naive to memory B cells. Our study shows that CLL progression does not typically occur via subclonal evolution, but that certain CpG sites undergo recurrent methylation changes. Our results suggest CLL progression may involve developmental processes shared in common with the generation of normal memory B cells.
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Affiliation(s)
- E N Smith
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - E M Ghia
- 1] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [2] Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | - C M DeBoever
- Bioinformatics and Systems Biology Program, University of California at San Diego, La Jolla, CA, USA
| | - L Z Rassenti
- 1] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [2] Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | - K Jepsen
- Institute for Genomic Medicine, University of California at San Diego, La Jolla, CA, USA
| | - K-A Yoon
- Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA
| | - H Matsui
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Institute for Genomic Medicine, University of California at San Diego, La Jolla, CA, USA
| | - S Rozenzhak
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - H Alakus
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - P J Shepard
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - Y Dai
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - M Khosroheidari
- Institute for Genomic Medicine, University of California at San Diego, La Jolla, CA, USA
| | - M Bina
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - K L Gunderson
- Illumina, Inc., 5200 Illumina Way, San Diego, CA, USA
| | - K Messer
- Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - L Muthuswamy
- 1] Ontario Institute for Cancer Research, Toronto, Ontario, Canada [2] Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - T J Hudson
- 1] Ontario Institute for Cancer Research, Toronto, Ontario, Canada [2] Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada [3] Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - O Harismendy
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - C L Barrett
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA
| | - C H M Jamieson
- 1] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [2] Department of Medicine, University of California at San Diego, La Jolla, CA, USA [3] Stem Cell Program, University of California San Diego, La Jolla, CA, USA
| | - D A Carson
- 1] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [2] Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | - T J Kipps
- 1] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [2] Department of Medicine, University of California at San Diego, La Jolla, CA, USA
| | - K A Frazer
- 1] Pediatrics and Rady's Children's Hospital, University of California at San Diego, La Jolla, CA, USA [2] Moores Cancer Center, University of California at San Diego, La Jolla, CA, USA [3] Bioinformatics and Systems Biology Program, University of California at San Diego, La Jolla, CA, USA [4] Institute for Genomic Medicine, University of California at San Diego, La Jolla, CA, USA
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198
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Gao XH, Gao R, Tian YZ, McGonigle P, Barrett JE, Dai Y, Hu H. A store-operated calcium channel inhibitor attenuates collagen-induced arthritis. Br J Pharmacol 2015; 172:2991-3002. [PMID: 25651822 DOI: 10.1111/bph.13104] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 01/20/2015] [Accepted: 01/27/2015] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Store-operated calcium (SOC) channels are thought to play a critical role in immune responses, inflammatory diseases and chronic pain. The aim of this study was to explore the potential role and mechanisms of SOC channels in collagen-induced arthritis (CIA). EXPERIMENTAL APPROACH The CIA mouse model was used to examine the effects of the SOC channel inhibitor YM-58483 on CIA and arthritic pain. Hargreaves' and von Frey hair tests were conducted to measure thermal and mechanical sensitivities of hind paws. elisa was performed to measure cytokine production, and haematoxylin and eosin staining was used to assess knee histological changes. Western blot analysis was performed to examine protein levels. KEY RESULTS Pretreatment with 5 or 10 mg · kg(-1) of YM-58483 reduced the incidence of CIA, prevented the development of inflammation and pain hypersensitivity and other signs and features of arthritis disease. Similarly, treatment with YM-58483 after the onset of CIA: (i) reversed the clinical scores; (ii) reduced paw oedema; (iii) attenuated mechanical and thermal hypersensitivity; (iv) improved spontaneous motor activity; (v) decreased periphery production of IL-1β, IL-6 and TNF-α; and (vi) reduced spinal activation of ERK and calmodulin-dependent PKII (CaMKIIα). CONCLUSIONS AND IMPLICATIONS This study provides the first evidence that inhibition of SOC entry prevents and relieves rheumatoid arthritis (RA) and arthritic pain. These effects are probably mediated by a reduction in cytokine levels in the periphery and activation of ERK and CaMKIIα in the spinal cord. These results suggest that SOC channels are potential drug targets for the treatment of RA.
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Affiliation(s)
- X H Gao
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA.,Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - R Gao
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Y Z Tian
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - P McGonigle
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - J E Barrett
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Y Dai
- Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing, China
| | - H Hu
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA
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199
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Abstract
Embryonic mice have been used widely to study organ development. Days 14-16 are critical for sex organ development and differentiation in mice. Current methods for sex identification are limited. Even the simplest polymerase chain reaction method may injure the embryo. We determined that morphologic analysis of embryonic mammary anlagen could be used for rapid atraumatic sex identification of day 14-16 mice. The accuracy of our method was verified by molecular and anatomical approaches.
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Affiliation(s)
- J Song
- College of Basic Medical Sciences, Dalian Medical University , Dalian
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200
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Ali A, Zhang P, Liangfang Y, Wenshe S, Wang H, Lin X, Dai Y, Feng XH, Moses R, Wang D, Li X, Xiao J. KLF17 empowers TGF-β/Smad signaling by targeting Smad3-dependent pathway to suppress tumor growth and metastasis during cancer progression. Cell Death Dis 2015; 6:e1681. [PMID: 25766320 PMCID: PMC4385926 DOI: 10.1038/cddis.2015.48] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/01/2015] [Accepted: 01/19/2015] [Indexed: 02/06/2023]
Abstract
Inhibition of tumor suppressive signaling is linked to cancer progression, metastasis and epithelial–mesenchymal transition (EMT). Transforming growth factor-β1 (TGF-β)/Smad signaling plays an important role in tumor suppression. Kruppel-like-factor 17 (KLF17) is a negative regulator of metastasis and EMT. However, underlying mechanisms leading to tumor suppressive and anti-metastatic function of KLF17 still remains unknown. Here, we show that KLF17 plays an integral role in potentiating TGF-β/Smad signaling via Smad3-dependent pathway to suppress tumor progression. Intriguingly, TGF-β/Smad3 signaling induces KLF17 expression, generating a positive feedback loop. TGF-β/Smad3–KLF17 loop is critical for anti-metastasis and tumor inhibition in cancer cells. Mechanistically, silencing KLF17 reduced Smad3–DNA complex formation on Smad binding element (SBE) and affects the expression of TGF-β/Smad target genes. Moreover, KLF17 alters Smad3 binding pattern on chromatin. KLF17 regulates TGF-β target genes that are Smad3-dependent. Smad3 and KLF17 physically interact with each other via KLF17 responsive elements/SBE region. Intriguingly, TGF-β stimulates the recruitment of KLF17 on chromatin to subsets of metastasis-associated genes. Functionally, depletion of KLF17 enhanced tumorigenic features in cancer cells. KLF17 is critical for full cytostatic function of TGF-β/Smad signaling. Clinically, KLF17 expression significantly decreases during advance HCC. KLF17 shows positive correlation with Smad3 levels in cancer samples. Our data shows that enhance KLF17 activity has important therapeutic implications for targeted-therapies aimed at TGF-β/Smad3 pathway. These findings define novel mechanism by which TGF-β/Smad–KLF17 pathway mutually affect each other during cancer metastasis, provide a new model of regulation of TGF-β/Smad signaling by KLF17 and defines new insights into anti-metastatic function of KLF17.
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Affiliation(s)
- A Ali
- 1] Nortern Jiangsu People's Hospital (Medical College of Yangzhou University), Yangzhou, Jiangsu 225001, China [2] Shanghai Key Laboratory of Regulatory Biology, Key Laboratory of Brain Functional Genomics (Ministry of Education), Shanghai Key Laboratory of Brain Functional Genomics, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - P Zhang
- Department of Pathology, the Second Chengdu Municipal Hospital, Chengdu, Sichuan 610017, China
| | - Y Liangfang
- Shanghai Key Laboratory of Regulatory Biology, Key Laboratory of Brain Functional Genomics (Ministry of Education), Shanghai Key Laboratory of Brain Functional Genomics, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - S Wenshe
- Shanghai Key Laboratory of Regulatory Biology, Key Laboratory of Brain Functional Genomics (Ministry of Education), Shanghai Key Laboratory of Brain Functional Genomics, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - H Wang
- Shanghai Key Laboratory of Regulatory Biology, Key Laboratory of Brain Functional Genomics (Ministry of Education), Shanghai Key Laboratory of Brain Functional Genomics, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - X Lin
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Y Dai
- Nortern Jiangsu People's Hospital (Medical College of Yangzhou University), Yangzhou, Jiangsu 225001, China
| | - X-h Feng
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - R Moses
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - D Wang
- Nortern Jiangsu People's Hospital (Medical College of Yangzhou University), Yangzhou, Jiangsu 225001, China
| | - X Li
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - J Xiao
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, 415 Fengyang Road, Shanghai 200003, China
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