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Qiao Y, Zhang C, Li A, Wang D, Luo Z, Ping Y, Zhou B, Liu S, Li H, Yue D, Zhang Z, Chen X, Shen Z, Lian J, Li Y, Wang S, Li F, Huang L, Wang L, Zhang B, Yu J, Qin Z, Zhang Y. Correction: IL6 derived from cancer-associated fibroblasts promotes chemoresistance via CXCR7 in esophageal squamous cell carcinoma. Oncogene 2023; 42:3287-3288. [PMID: 37723312 DOI: 10.1038/s41388-023-02822-3] [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: 09/20/2023]
Affiliation(s)
- Y Qiao
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - C Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - A Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - D Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Luo
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Ping
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - B Zhou
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - S Liu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - H Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - D Yue
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Chen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Shen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J Lian
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Y Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - S Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Huang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wang
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - B Zhang
- Department of Hematology/Oncology, School of Medicine, Northwestern University, Chicago, IL, USA
| | - J Yu
- Department of Internal Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Z Qin
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
- School of Life Sciences, Zhengzhou University, Zhengzhou, China.
- Key Laboratory for Tumor Immunology and Biotherapy of Henan Province, Zhengzhou, China.
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DU Y, Huang F, Guan L, Zeng M. Role of PI3K/Akt/mTOR pathway-mediated macrophage autophagy in affecting the phenotype transformation of lung fibroblasts induced by silica dust exposure. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2023; 48:1152-1162. [PMID: 37875355 PMCID: PMC10930851 DOI: 10.11817/j.issn.1672-7347.2023.220581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Indexed: 10/26/2023]
Abstract
OBJECTIVES The phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway is one of the main signaling pathways related to autophagy. Autophagy plays a key role in the formation of silicosis fibrosis. The phenotypic transformation of lung fibroblasts into myofibroblasts is a hallmark of the transition from the inflammatory phase to the fibrotic phase in silicosis. This study aims to investigate whether the PI3K/Akt/mTOR pathway affects the phenotypic transformation of silicosis-induced lung fibroblasts into myofibroblasts via mediating macrophage autophagy. METHODS The human monocytic leukemia cell line THP-1 cells were differentiated into macrophages by treating with 100 ng/mL of phorbol ester for 24 h. Macrophages were exposed to different concentrations (0, 25, 50, 100, 200, 400 μg/mL) and different times (0, 6, 12, 24, 48 h) of SiO2 dust suspension. The survival rate of macrophages was measured by cell counting kit-8 (CCK-8) method. Enzyme linked immunosorbent assay (ELISA) was used to measure the contents of transforming growth factor-β1 (TGF-β1) and tumor necrosis factor-α (TNF-α) in the cell supernatant. The co-culture system of macrophages and HFL-1 cells was established by transwell. A blank control group, a SiO2 group, a LY294002 group, a SC79 group, a LY294002+SiO2 group, and a SC79+SiO2 group were set up in this experiment. Macrophages in the LY294002+SiO2 group were pretreated with LY294002 (PI3K inhibitor) for 18 hours, and macrophages in the SC79+SiO2 group were pretreated with SC79 (Akt activator) for 24 hours, and then exposed to SiO2 (100 μg/mL) dust suspension for 12 hours. The expression of microtubule-associated protein 1 light chain 3 (LC3) protein in macrophages was detected by the immunofluorescence method. The protein expressions of PI3K, Akt, mTOR, Beclin-1, LC3 in macrophages, and collagen III (Col III), α-smooth muscle actin (α-SMA), fibronectin (FN), matrix metalloproteinase-1 (MMP-1), tissue metalloproteinase inhibitor-1 (TIMP-1) in HFL-1 cells were measured by Western blotting. RESULTS After the macrophages were exposed to SiO2 dust suspension of different concentrations for 12 h, the survival rates of macrophages were gradually decreased with the increase of SiO2 concentration. Compared with the 0 μg/mL group, the survival rates of macrophages in the 100, 200, and 400 μg/mL groups were significantly decreased, and the concentrations of TGF-β1 and TNF-α in the cell supernatant were obviously increased (all P<0.05). When 100 μg/mL SiO2 dust suspension was applied to macrophages, the survival rates of macrophages were decreased with the prolonged exposure time. Compared with the 0 h group, the survival rates of macrophages were significantly decreased (all P<0.05), the concentrations of TGF-β1 and TNF-α in the cell supernatant were significantly increased, and the protein expression levels of Beclin-1 and LC3II were increased markedly in the 6, 12, 24, and 48 h groups (all P<0.05). Immunofluorescence results demonstrated that after exposure to SiO2 (100 μg/mL) dust for 12 h, LC3 exhibited punctate aggregation and significantly higher fluorescence intensity compared to the blank control group (P<0.05). Compared with the blank control group, the protein expressions of Col III, FN, α-SMA, MMP-1, and TIMP-1 in HFL-1 cells were up-regulated in the SiO2 group (all P<0.05). Compared with the SiO2 group, the protein expressions of PI3K, Akt, and mTOR were down-regulated and the protein expressions of LC3II and Beclin-1 were up-regulated in macrophages (all P<0.05), the contents of TNF-α and TGF-β1 in the cell supernatant were decreased (both P<0.01), and the protein expressions of Col III, FN, α-SMA, MMP-1, and TIMP-1 in HFL-1 cells were down-regulated (all P<0.05) in the LY294002+SiO2 group. Compared with the SiO2 group, the protein expressions of PI3K, Akt, and mTOR were up-regulated and the protein expressions of LC3II and Beclin-1 were down-regulated in macrophages (all P<0.05), the contents of TNF-α and TGF-β1 in the cell supernatant were increased (both P<0.01), and the protein expressions of Col III, FN, α-SMA, MMP-1, and TIMP-1 in HFL-1 cells were up-regulated (all P<0.05) in the SC79+SiO2 group. CONCLUSIONS Silica dust exposure inhibits the PI3K/Akt/mTOR pathway, increases autophagy and concentration of inflammatory factors in macrophages, and promotes the phenotype transformation of HFL-1 cells into myofibroblasts. The regulation of the PI3K/Akt/mTOR pathway can affect the autophagy induction and the concentration of inflammatory factors of macrophages by silica dust exposure, and then affect the phenotype transformation of HFL-1 cells into myofibroblasts induced by silica dust exposure.
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Affiliation(s)
- Yue DU
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410006, China.
| | - Fangcai Huang
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410006, China.
| | - Lan Guan
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410006, China
| | - Ming Zeng
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha 410006, China.
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Wang C, Zhang L, Li Y, Zhang Z, Yue D, Zhang L. 93P A phase II study of camrelizumab plus chemotherapy in patients with medically inoperable early-stage non-small cell lung cancer. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00348-9] [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: 04/03/2023]
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DU Y, Wang ZW, Xi JH, Li JY, Liang KK, Huang KT, Luo HY. [Effects of Angelicae Sinensis Radix on cAMP/Epac signaling pathway in the treatment of chronically infected cough mice with Yin deficiency syndrome]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2022; 38:475-479. [PMID: 37088755 DOI: 10.12047/j.cjap.6296.2022.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
OBJECTIVE To investigate the effects of Angelicae Sinensis Radix (ASR) on cyclic adenosine monophosphate (cAMP) /exchange protein activated by cAMP (Epac) signaling pathway in the treatment of chronically infected cough mice with Yin deficiency syndrome. METHODS Mice were randomly divided into blank control group, model control group, positive control group and ASR group (n=8). The chronic cough mouse model of hyperreactive and infected airway with Yin deficiency syndrome was established with fumigation (once a day, 30 days in total), lipopolysaccharide nasal drip (every 3 days 10 μl, 10 times in total), intragastric administration of thyroid gland (120 mg/kg, once a day, a total of 15 days) and inhalation of ammonia (3 min / time × 10 times). On the basis of observing eating and drinking water, body weight and autonomic activities, the effects of ASR on metabolic level, autonomous activities, antitussive effect, cell factor in bronchoalveolar lavage fluid (BALF) brain tissue 5-HT and lung tissue related active factors(SP, PGP9.5, cAMP, Epac1) were detected. RESULTS ASR could significantly restrain cough, alleviate the pathological changes of bronchioles, reduce the contents of IL-4, IL-13, TNF-α in BALF and the levels of SP, PGP9.5, cAMP and Epac1 in lung tissues, increase the content of 5-HT in brain tissue (P<0.05, 0.01). CONCLUSION ASR has some effects on restraining cough and one of its mechanisms is to down-regulate cAMP/Epac signaling pathway, to alleviate airway neurogenic inflammation and reduce sensitivity of cough neural pathway.
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Affiliation(s)
- Yue DU
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Zhi-Wang Wang
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Jian-Hong Xi
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Ji-Yang Li
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Ke-Ke Liang
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Ke-Ting Huang
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
| | - Hui-Ying Luo
- Gansu University of Traditional Chinese Medicine, Lanzhou 730000, China
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Han B, Fang V, Yao F, Song P, Yue D, Qi Y, Zhang B, Zhang W, Zhang Y, Tan L. 948TiP Efficacy and safety of almonertinib in the adjuvant treatment of resectable stage I non-small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR)-sensitizing mutations in solid and/or micropapillary components. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1073] [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: 12/01/2022] Open
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Yue D, Zhang B, Ma Y, Cui L, Song S, Wang J, Zhang X, Zhao X, Zhang Z, Wang C. 1164P Whole-course management of surgical NSCLC patients based on ctDNA detection: Neo-adjuvant treatment efficacy prediction and postoperative recurrence monitoring. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Pang YR, DU Y, Wang ZW, Xi JH, Li JY, Wei LX, Ding MP, Cheng XL. [Effects of Butylphthalide on airway mucus hypersecretion, IL-13 and TNF-α in asthmatic mice]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2021; 37:557-560. [PMID: 34816673 DOI: 10.12047/j.cjap.6125.2021.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the effects of Butylphthalide (NBP) on airway mucus hypersecretion, interleukin-13 (IL-13) and tumor necrosis factor-α (TNF-α) in asthmatic mice. Methods: The mice were randomly divided into control group, asthma group, DEX group and high, medium and low doses of NBP (100, 50, 25 mg/kg) groups (n=12). Ovalbumin (OVA) injection was sensitized on the 1st, 8th, and 15th day of the experiment, and OVA was inhaled on the 22nd day to stimulate for 5 weeks to replicate the asthma model, and 20 mg/kg of NBP was given for intervention before the challenge. Finally, the asthma behavior, the secretion of goblet cells and Mucin 5ac (Muc5ac)were observed, and meanwhile the viscosity of bronchoalveolar lavage fluid (BALF) and the levels of Muc5ac, IL-13 and TNF-α in BALF were measured by ELISA. Results: Compared with the control group, the degree of sneezing, nose scratching and asthma, the proliferation of airway epithelial goblet cells and secretion of Muc5ac in the asthma group were increased significantly (P<0.01), meanwhile, the viscosity of BALF and the contents of Muc5ac, IL-13 and TNF-α were also increased significantly (P<0.01). Compared with the asthma group, the above behavioral scores of asthma were decreased significantly (P<0.01) after the intervention of 25, 50 and 100 mg/kg NBP, as well as the proliferation of airway epithelial goblet cells, secretion of Muc5ac, the viscosity of BALF and the contents of Muc5ac, IL-13 and TNF-α were significantly lower than those of the asthma group (P<0.05, 0.01). Conclusion: NBP has the effect of anti-asthma by inhibiting mucus hypersecretion, and one of its mechanisms is to alleviate the abnormal expressions of IL-13 and TNF-α.
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Affiliation(s)
- Ya-Rong Pang
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Yue DU
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Zhi-Wang Wang
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Jian-Hong Xi
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Ji-Yang Li
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Ling-Xia Wei
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Mao-Peng Ding
- Gansu University of Chinese Medicine, Lanzhou 730000, China
| | - Xiao-Li Cheng
- Gansu University of Chinese Medicine, Lanzhou 730000, China
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Meng YY, Su JG, Chen X, Molitor J, Yue D, Jerrett M. Improvements in Air Quality and Health Outcomes Among California Medicaid Enrollees Due to Goods Movement Actions. Res Rep Health Eff Inst 2021; 2021:1-61. [PMID: 35869754 PMCID: PMC9314313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Abstract
INTRODUCTION In 2006, the California Air Resources Board (CARB) and local air quality management districts implemented an Emission Reduction Plan for Ports and Goods Movement program (referred to hereinafter as GM policy actions) (CARB 2006). The GM policy actions comprise approximately 200 actions with an estimated investment value of $6 to $10 billion. These actions targeted the major sources and polluters related to goods movements, such as highways; ports and railyard trucks; ship fuel and shore power; cargo equipment; and locomotives. These actions aimed to reduce total statewide domestic GM emissions to 2001 levels or lower by the year 2010; to reduce the statewide diesel particulate matter (DPM) health risk from GM by 85% by the year 2020; and to reduce the nitrogen oxides (NOx) emissions from international GM in the South Coast Air Basin by 30% from projected 2015 levels and 50% from projected 2020 levels. The years 2006 and 2007 marked an important milestone in starting to regulate GM polluters and adopting stricter standards for traffic-related air pollution. This project aimed to examine the impact of the GM policy actions on reductions in ambient air pollution and subsequent improvements in health outcomes of Medi-Cal fee-for-service (FFS) beneficiaries with chronic conditions in 10 counties in California. Specifically, we examined whether the GM policy actions reduced air pollution near GMC corridors more than in control areas. We subsequently assessed whether there were greater decreases in emergency room (ER) visits and hospitalizations for enrollees with chronic conditions who lived in the GM corridors (GMCs) than for those who lived in other areas. METHODS The study used a quasi-experimental design. We defined areas within 500 m of truck-permitted freeways and ports as GMCs. We further defined non-goods movement corridors (NGMCs) as locations within 500 m of truck-prohibited freeways or 300 m of a connecting roadway, and areas out of GMCs and NGMCs as controls (CTRLs). We defined years 2004-2007 as the pre-policy period and years 2008-2010 as the post-policy period. We developed linear mixed-effects land use regression models and created annual air pollution surfaces for nitrogen dioxide (NO2), fine particulate matter (PM2.5), and ozone (O3) across California for years 2004-2010 at a spatial resolution of 30 m, then assigned them to enrollees' home addresses. We used a retrospective cohort of 23,000 California Medicaid (Medi-Cal) FFS adult beneficiaries living in 10 California counties with six years of data (September 1, 2004, to August 31, 2010). Cohort beneficiaries had at least one of four chronic conditions, including asthma, chronic obstructive pulmonary disease (COPD), diabetes, and heart disease. We used a difference-in-differences (DiD) model to assess whether air pollutant concentration and health care utilization (ER visits and hospitalizations) for cohort beneficiaries declined more for those living in intervention corridors (GMCs, NGMCs) than those living in CTRLs. All the models controlled for age, sex, language spoken, race/ethnicity, number of comorbidities in baseline years, county, time-varying health indicator variables, and several neighborhood variables. To facilitate interpretation, we calculated the DiD estimates in each of the three years after the policy intervention. The DiD was used to assess the causal impact of regulatory policy on reductions of air pollution, as well as for the improvements in health outcomes. We explored whether improvements in health outcomes were due to the air pollution reduction by using a multi- level mediation model, in which the effect of GM actions on health outcomes was mediated through the effect of actual air pollution reductions in the post-policy years. We used the Generalized Structural Equation Models for the estimation and combined the effects of NO2 and PM2.5 in the model. To further verify the causal inferences of the GM actions on reductions of exposures and improvements in health outcomes, we performed sensitivity analyses with propensity score weighting. RESULTS We observed statistically significant reductions in pollutant NO2 and PM2.5 concentrations for enrollees in all 10 counties. The enrollees in GMCs experienced greater reductions in NO2 and PM2.5 from the pre- to the post-policy periods than those in CTRLs. Greater reductions were also observed among beneficiaries living in NGMCs versus those in CTRLs, but those reductions were smaller than among beneficiaries living in GMCs. For O3 concentrations, an opposite trend was observed. Furthermore, we observed significantly greater reductions in ER visits for patients with asthma and COPD living in GMCs than those in CTRLS in the post-policy years. For example, we saw in the DiD modeling results there were 170 fewer ER visits for 1,000 beneficiaries with asthma per year in GMCs if the regionwide trend in the CTRL group was considered not related to the GM policy. Similarly, among the beneficiaries with COPD, there were 180 fewer ER visits per 1,000 patients estimated in the GMCs for the third year after the implementation of the policy. We also observed greater reductions in ER visits among those with asthma, when comparing NGMCs with CTRLs, but reductions were smaller than comparisons between GMCs and CTRLs. The ER visits for those with COPD, diabetes, and the total sample in NGMCs also had downward trends in the post-policy year in comparison with those in CTRLs but the differences were not statistically significant; similar phenomena were also observed for the ER visits among those with diabetes and heart diseases and in the total sample when GMCs versus CTRLs and GMCs versus NGMCs were compared. Although hospitalizations also decreased more in GMCs than in NGMCs and more in NGMCs than in CTRLs in the post-policy period, results were not statistically significant. Using the mediation models, we observed 0.129 more reductions in the expected number of ER visits among individuals with asthma for a composite reduction in one unit NO2 and one unit PM2.5 (DiD = -0.129, P < 0.05) from the pre-policy years to the post-policy years. The reductions in NO2 and PM2.5 due to policy change estimated by the mediation model are essentially the same as shown in the respective DiD models. Mediation analyses suggested that the effects of GM policy interventions on health improvements were largely due to exposure reductions. Finally, sensitivity analyses with propensity scores produced similar DiD results. CONCLUSIONS This project has produced empirical evidence that air pollution control actions reduced pollution exposures among disadvantaged and susceptible populations. More importantly, our findings suggest that the reductions in air pollution led to health outcome improvements among low-income people with chronic conditions. Our investigation also contributed to scientific methods for assessing the health effects of long-term, large-scale, and complex regulatory actions with routinely collected pollutants and medical claims data. Therefore, the results strongly support both short-term and long-term efforts to improve air quality for all members of society and future studies on the impact of air pollution control policies.
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Affiliation(s)
- Y-Y Meng
- UCLA Center for Health Policy Research, University of California, Los Angeles
| | - J G Su
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley
| | - X Chen
- UCLA Center for Health Policy Research, University of California, Los Angeles
| | - J Molitor
- School of Biological and Population Health Sciences, Oregon State University, Corvallis
| | - D Yue
- UCLA Center for Health Policy Research, University of California, Los Angeles
| | - M Jerrett
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles
- Center for Occupational and Environmental Health, Fielding School of Public Health, University of California, Los Angeles
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Zhang B, Yue D, Gao L, Li C, Xiao S, Pu Y, Lin R, Wang T, Wang C. P59.05 Multi-Omic Analysis Between Tumor Tissues from Early and Late Stage Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wang C, Yue D, Ma Y, Zhang Q, Li Y, Zhang B, Xiao S, Pu Y, Lin R, Wang T. P60.06 Single Cell Sequencing Analysis Revealed Altered Lung Cancer Microenvironment by Neoadjuvant Immunotherapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.965] [Citation(s) in RCA: 1] [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: 10/21/2022]
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Wang J, Zheng Y, Peng X, Li R, Pang Y, DU Y, Chen Y, Zhang K. [Low expression of PTEN and high expression of STING in human tongue squamous cell carcinoma tissues are associated with poor prognosis]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2020; 36:1016-1020. [PMID: 33210596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective To investigate the expression and clinical significance of phosphatase and tension homolog deleted on chromosome ten (PTEN) and stimulator of interferon genes (STING) in human tongue squamous cell carcinoma (TSCC). Methods The expression of PTEN and STING protein in 65 pairs of TSCC and paracancerous tissues was detected by immunohistochemical EnVision method, and the relationships between PTEN, STING and clinicopathological parameters, overall survival (OS) and prognosis were analyzed by statistical methods. Results Compared with the adjacent tissues, the expression of PTEN in TSCC significantly decreased, and the expression of STING significantly increased. PTEN was negatively correlated with STING. In TSCC, the expression of PTEN and STING were correlated with pathological grade, TNM stage and lymph node metastasis. There were no significant correlations between the expression intensity of PTEN, STING and the gender and age of patients. The low expression of PTEN and the high expression of STING in TSCC tissues were significantly associated with poor prognosis and significantly shortened overall survival of patients. Conclusion TSCC patients with low expression of PTEN and high expression of STING have poor prognosis and short survival time. Combined detection of PTEN and STING expression is helpful to evaluate the degree of tumor progression and patient prognosis.
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Affiliation(s)
- Jing Wang
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Yanran Zheng
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Xiao Peng
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Ran Li
- Department of Pathology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Yaqian Pang
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Yue DU
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Yongfeng Chen
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Kai Zhang
- Department of Stomatology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China. *Corresponding author, E-mail:
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Pourat N, Yue D, Chen X, O'Masta B, Huynh M, Chau B. Progress of California's Effort to Improve Outcomes of Care for Homeless Medicaid Patients Under a Section 1115 Medicaid Waiver Program. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13528] [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: 11/30/2022] Open
Affiliation(s)
- N. Pourat
- University of California at Los Angeles, Fielding School of Public Health Los Angeles CA United States
| | - D. Yue
- UCLA Fielding School of Public Health Los Angeles CA United States
| | - X. Chen
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - B. O'Masta
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - M. Huynh
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - B. Chau
- UCLA Center for Health Policy Research Los Angeles CA United States
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Yue D, Pourat N, Chen X, O'Masta B, Huynh M, Xin K. How to Identify Homelessness Using Administrative Data. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13531] [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: 12/01/2022] Open
Affiliation(s)
- D. Yue
- UCLA Fielding School of Public Health Los Angeles CA United States
| | - N. Pourat
- University of California at Los Angeles, Fielding School of Public Health Los Angeles CA United States
| | - X. Chen
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - B. O'Masta
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - M. Huynh
- University of California at Los Angeles Center for Health Policy Research Los Angeles CA United States
| | - K. Xin
- UCLA Center for Health Policy Research Los Angeles CA United States
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Liu Y, Yue D, Zhu W, Li J, Cai S, Luo S, Xi J, Lin J, Lu J, Zhou L, Liang Z, Lu J, Zhao C. EP.26Phenotype may predict the clinical severity of facioscapulohumeral muscular dystrophy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu Y, Yue D, Zhu W, Li J, Cai S, Luo S, Xi J, Lin J, Lu J, Zhou L, Liang Z, Lu J, Zhao C. EP.36PATCHS MRI score correlates with clinical severity in facioscapulohumeral muscular dystrophy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.268] [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: 10/25/2022]
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Zhu W, Luo S, Wang Z, Lin J, Xi J, Yue D, Lu J, Zhao C. P.232Hereditary myopathy with early respiratory failure in Chinese population. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.346] [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: 10/25/2022]
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Chen Y, Xi J, Zhu W, Lin J, Luo S, Yue D, Cai S, Sun C, Zhao C, Mitsuhashi S, Nishino I, Xu M, Lu J. MYOFIBRILLAR AND DISTAL MYOPATHIES. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang B, Zhang L, Zhang T, Yue D, Li C, Zhang Z, Ye J, Wang H, Chuai S, Wang C. MA21.05 Comprehensive Genomic Characterization and Prognostic Nomogram Developed by 295-Gene Panel Targeted Sequencing. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang Y, Zhu J, Yue D, Zhao X, Zhang Q, Chen H, Wang C. P1.16-08 Weekly Nab-Paclitaxel Plus Carboplatin as Neoadjuvant Therapy for IIIA-N2 Lung Squamous Cell Carcinoma: A Prospective Phase II Study. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.977] [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: 10/28/2022]
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Luo S, Cai S, Gao M, Xi J, Liu Z, Yue D, Lu J, Zhao C. LIMB-GIRDLE MUSCULAR DYSTROPHY I. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Qiao Y, Zhang C, Li A, Wang D, Luo Z, Ping Y, Zhou B, Liu S, Li H, Yue D, Zhang Z, Chen X, Shen Z, Lian J, Li Y, Wang S, Li F, Huang L, Wang L, Zhang B, Yu J, Qin Z, Zhang Y. IL6 derived from cancer-associated fibroblasts promotes chemoresistance via CXCR7 in esophageal squamous cell carcinoma. Oncogene 2018; 37:873-883. [PMID: 29059160 DOI: 10.1038/onc.2017.387] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [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: 04/21/2017] [Revised: 08/28/2017] [Accepted: 09/12/2017] [Indexed: 12/18/2022]
Abstract
Various factors and cellular components in the tumor microenvironment are key drivers associated with drug resistance in many cancers. Here, we analyzed the factors and molecular mechanisms involved in chemoresistance in patients with esophageal squamous cell carcinoma (ESCC). We found that interleukin 6 (IL6) derived mainly from cancer-associated fibroblasts played the most important role in chemoresistance by upregulating C-X-C motif chemokine receptor 7 (CXCR7) expression through signal transducer and activator of transcription 3/nuclear factor-κB pathway. CXCR7 knockdown resulted in the inhibition of IL6-induced proliferation and chemoresistance. In addition, CXCR7 silencing significantly decreased gene expression associated with stemness, chemoresistance and epithelial-mesenchymal transition and suppressed the proliferation ability of ESCC cells in three-dimensional culture systems and angiogenesis assay. In clinical samples, ESCC patients with high expression of CXCR7 and IL6 presented a significantly worse overall survival and progression-free survival upon receiving cisplatin after operation. These results suggest that the IL6-CXCR7 axis may provide a promising target for the treatment of ESCC.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Apoptosis
- Biomarkers, Tumor
- Cancer-Associated Fibroblasts/drug effects
- Cancer-Associated Fibroblasts/metabolism
- Cancer-Associated Fibroblasts/pathology
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/metabolism
- Carcinoma, Squamous Cell/secondary
- Cell Proliferation
- Drug Resistance, Neoplasm
- Epithelial-Mesenchymal Transition
- Esophageal Neoplasms/drug therapy
- Esophageal Neoplasms/metabolism
- Esophageal Neoplasms/pathology
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Interleukin-6/genetics
- Interleukin-6/metabolism
- Lymphatic Metastasis
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Middle Aged
- Neoplasm Invasiveness
- Neoplasm Recurrence, Local
- Prognosis
- Receptors, CXCR/genetics
- Receptors, CXCR/metabolism
- Signal Transduction
- Survival Rate
- Tumor Cells, Cultured
- Tumor Microenvironment
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Y Qiao
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - C Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - A Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - D Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Luo
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Ping
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - B Zhou
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - S Liu
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - H Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - D Yue
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Chen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Z Shen
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J Lian
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Y Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - S Wang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F Li
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Huang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Wang
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - B Zhang
- Department of Hematology/Oncology, School of Medicine, Northwestern University, Chicago, IL, USA
| | - J Yu
- Department of Internal Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Z Qin
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Key Laboratory for Tumor Immunology and Biotherapy of Henan Province, Zhengzhou, China
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22
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Zhang B, Zhang H, Gao L, Yue D, Zhang Z, Li C, Wang C. P1.02-004 Long Non-Coding RNA XLOC_000090 Promotes Lung Cancer Migration Through Modulation of miR-4505. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
The laparoscopic approach has replaced open surgery as the gold standard for cholecystectomy. This technique is, however, associated with a greater incidence of bile duct injuries (BDIs). We report a case of portobiliary fistula (PBF), a rare complication of BDI, occurring post laparoscopic cholecystectomy (LC). PBF has been reported after procedures such as endoscopic retrograde cholangiopancreatography and pathologies such as liver abscesses, but only once previously in the setting of LC. We discuss the management of this patient with apparent dual pathology, and summarise other aetiologies that may give rise to this condition.
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Affiliation(s)
- B Merrick
- Hammersmith Hospital, Imperial College London , London , UK
| | - D Yue
- Hammersmith Hospital, Imperial College London , London , UK
| | - M H Sodergren
- Hammersmith Hospital, Imperial College London , London , UK
| | - L R Jiao
- Hammersmith Hospital, Imperial College London , London , UK
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Abstract
INTRODUCTION A palpable lesion in the breast is usually subjected to triple assessment (clinical examination [CE], imaging and core biopsy [CB] or fine needle aspiration [FNA]) to minimise the risk of missing breast cancer. However, breast cancer is rare in young women, and triple assessment (especially CB) is invasive and expensive. Our aim was to see whether CB/FNA could be avoided in young women with benign findings on CE and imaging. METHODS This study analysed data from a prospectively entered database on female patients aged under 25 years who attended a rapid diagnosis breast clinic over a 68-month period. RESULTS Among 10,301 patients seen, 955 females (9.3%) were aged <25 years. The most common presenting complaint was a lump, followed by pain and nipple discharge. CE was normal or revealed benign findings in all except 15 patients, in whom it was indeterminate. Ultrasonography was performed in 692 patients (72%) and was normal (n=289) or benign (n=382) in all except 21 patients, in whom it was indeterminate. In six patients, both were indeterminate. A total of 317 patients (35%) had triple assessment: FNA in 106, CB in 239 and both in 9 cases. No cancers were diagnosed. CONCLUSIONS It would appear safe to omit FNA/CB in patients aged under 25 years when clinical and ultrasonography findings are normal or benign. This approach would have avoided needle biopsies in all but 30 patients (3%) in the study.
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Affiliation(s)
- D Yue
- Luton and Dunstable University Hospital NHS Foundation Trust, UK
| | - C Swinson
- Luton and Dunstable University Hospital NHS Foundation Trust, UK
| | - D Ravichandran
- Luton and Dunstable University Hospital NHS Foundation Trust, UK
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25
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DU Y, Zhang H, Jiang Z, Huang G, Lu W, Wang H. Expression of L1 protein correlates with cluster of differentiation 24 and integrin β1 expression in gastrointestinal stromal tumors. Oncol Lett 2015; 9:2595-2602. [PMID: 26137113 DOI: 10.3892/ol.2015.3096] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 01/29/2015] [Indexed: 12/11/2022] Open
Abstract
The present study examined 66 cases of gastrointestinal stromal tumors (GISTs), 20 cases of smooth muscle tumors, 20 cases of schwannomas and 20 cases of normal gastric tissues in order to analyze the expression of L1, cluster of differentiation (CD)24 and integrin β1 by immunohistochemical staining. Patients were subjected to follow-up, and survival data were evaluated. L1 expression was detected in 57.6% of GIST cases; this was a significantly higher percentage compared with that found in the smooth muscle tumor cases or the normal control group. CD24 and integrin β1 were also expressed at significantly higher levels in the GIST cases than in the normal control group, although no significant difference was found in the expression levels of these proteins in smooth muscle tumor or schwannoma cases. These higher levels of L1 and integrin β1 expression were associated with an increased risk of invasive GIST, and were significantly positively correlated with Ki-67 expression. CD24 expression was not associated with the risk of GIST invasion or Ki-67 expression. There were positive correlations between L1, CD24 and integrin β1 expression; however, these had no significant association with patient survival. Therefore, L1 alone or in conjunction with CD24 (L1 + CD24), or integrin β1 (L1 + integrin β1) can be considered a valuable indicator for the differential diagnosis of GIST. Furthermore, L1 and integrin β1 can be used alone or in combination to evaluate the biological behavior of GISTs. Future studies are required to evaluate the prognostic value of these markers.
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Affiliation(s)
- Yue DU
- Department of Public Health, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Haihong Zhang
- Department of Public Health, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Zhongmin Jiang
- Department of Pathology, Tianjin Fifth Central Hospital, Tianjin 300450, P.R. China
| | - Guowei Huang
- Department of Public Health, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Wenli Lu
- Department of Public Health, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Hesheng Wang
- Department of Public Health, Tianjin Medical University, Tianjin 300070, P.R. China
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Yale JF, Bakris G, Cariou B, Nieto J, David-Neto E, Yue D, Wajs E, Figueroa K, Jiang J, Law G, Usiskin K, Meininger G. Efficacy and safety of canagliflozin over 52 weeks in patients with type 2 diabetes mellitus and chronic kidney disease. Diabetes Obes Metab 2014; 16:1016-27. [PMID: 24965700 DOI: 10.1111/dom.12348] [Citation(s) in RCA: 197] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 06/10/2014] [Accepted: 06/14/2014] [Indexed: 12/28/2022]
Abstract
AIM This study evaluated the efficacy and safety of canagliflozin, a sodium glucose co-transporter 2 inhibitor, in patients with type 2 diabetes mellitus (T2DM) and within a subset of Stage 3 chronic kidney disease (CKD; estimated glomerular filtration rate [eGFR] ≥ 30 and <50 ml/min/1.73 m(2)). METHODS In this 52-week, randomized, double-blind, placebo-controlled study, patients (N = 269; mean eGFR, 39.4 ml/min/1.73 m(2)) received canagliflozin 100 or 300 mg and placebo once daily. Efficacy endpoints included changes in glycated haemoglobin (HbA1c), fasting plasma glucose (FPG), body weight and systolic blood pressure (BP); adverse events (AEs) were also recorded. RESULTS At week 52, canagliflozin 100 and 300 mg reduced HbA1c compared with placebo (-0.19, -0.33 and 0.07%, respectively); placebo-subtracted differences (95% confidence interval) were -0.27% (-0.53, 0.001) and -0.41% (-0.68, -0.14). Canagliflozin also lowered FPG, body weight and BP versus placebo. Overall AE incidence was 85.6, 80.9, and 86.7% with canagliflozin 100 and 300 mg and placebo, respectively. Osmotic diuresis-related AEs were more common with both canagliflozin doses, and incidences of urinary tract infections and volume depletion-related AEs were higher with canagliflozin 300 mg versus placebo. Decreases in eGFR (-2.1, -4.0 and -1.6 ml/min/1.73 m(2)) were seen with canagliflozin 100 and 300 mg compared with placebo. Canagliflozin 100 and 300 mg provided median percent reductions in urine albumin to creatinine ratio versus placebo (-16.4, -28.0 and 19.7%). CONCLUSIONS Canagliflozin improved glycaemic control and was generally well tolerated in patients with T2DM and within a subset of Stage 3 CKD over 52 weeks.
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Affiliation(s)
- J-F Yale
- Department of Medicine, Royal Victoria Hospital and McGill University, Montreal, Canada
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DU Y, Hou L, Guo J, Sun T, Wang X, Wu Y. Renal neutrophil gelatinase-associated lipocalin and kidney injury molecule-1 expression in children with acute kidney injury and Henoch-Schönlein purpura nephritis. Exp Ther Med 2014; 7:1130-1134. [PMID: 24940398 PMCID: PMC3991550 DOI: 10.3892/etm.2014.1595] [Citation(s) in RCA: 16] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 12/13/2013] [Indexed: 01/02/2023] Open
Abstract
The aim of this study was to investigate the expression of neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) in the serum, urine and renal tissues of children with acute kidney injury (AKI) and Henoch-Schönlein purpura nephritis (A-on-C). A prospective single-center evaluation of the serum, urine and renal NGAL and KIM-1 levels was performed in a cohort of children. Blood and 5-ml urine samples were collected from each patient for the analysis of NGAL and KIM-1 levels using an ELISA. In addition, the expression of NGAL and KIM-1 in the kidney was examined using immunohistochemistry in patients with A-on-C and HSPN. The expression of serum cystatin C, β2-macroglobulin and serum creatinine (SCr), as well as urinary β2-MG and SCr, in the patients with A-on-C was significantly higher than that of HSPN patients, and the expression of NGAL and KIM-1 in the serum and urine in the A-on-C patients was also significantly higher than that of HSPN patients. However, there were no significant differences in the urine protein levels between the two groups. NGAL and KIM-1 were expressed in renal tubular epithelial cells, and the expression of NGAL and KIM-1 in the A-on-C patients was significantly higher than that in HSPN patients. In addition, the urine NGAL and KIM-1 levels were negatively correlated with glomerular filtration rate, but there was no significant correlation between the urine NGAL/KIM-1 and urine protein levels. The changes in serum and urine NGAL and KIM-1 levels may be applied to the diagnosis of A-on-C.
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Affiliation(s)
- Yue DU
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Ling Hou
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Jinjie Guo
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Tingting Sun
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xiuli Wang
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yubin Wu
- Department of Pediatric Nephrology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
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Liu X, Liu LZ, Mao YP, Chen L, Tang LL, Zhou GQ, Sun Y, Yue D, Lin AH, Li L, Ma J. Prognostic value of magnetic resonance imaging-detected cranial nerve invasion in nasopharyngeal carcinoma. Br J Cancer 2014; 110:1465-71. [PMID: 24496459 PMCID: PMC3960608 DOI: 10.1038/bjc.2014.27] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 11/10/2013] [Revised: 12/25/2013] [Accepted: 01/08/2014] [Indexed: 12/16/2022] Open
Abstract
Background: We previously reported that magnetic resonance imaging evidence of cranial nerve invasion was an unfavourable prognostic factor in nasopharyngeal carcinoma. However, the prognostic value of this evidence in nasopharyngeal carcinoma treated with intensity-modulated radiotherapy remains unknown. Methods: We retrospectively analysed 749 nasopharyngeal carcinoma patients who underwent intensity-modulated radiotherapy. Results: Cranial nerve invasion was observed in 299 (39.9%) patients with T3–4 disease. In T3–4 nasopharyngeal carcinoma, magnetic resonance imaging-detected cranial nerve invasion was associated with inferior 5-year overall survival, distant metastasis-free survival, and locoregional relapse-free survival (P=0.002, 0.003, and 0.012, respectively). Multivariate analyses confirmed that cranial nerve invasion was an independent prognostic factor for distant metastasis-free survival (hazard ratio, 1.927; P=0.019) and locoregional relapse-free survival (hazard ratio, 2.605; P=0.032). Furthermore, the receiver-operating characteristic curves verified that the predictive validity of T classifications was significantly improved when combined with magnetic resonance imaging-detected cranial nerve invasion in terms of death, distant metastasis, and locoregional recurrence (P=0.015, 0.021 and 0.008, respectively). Conclusions: Magnetic resonance imaging-detected cranial nerve invasion is an independent adverse prognostic factor in nasopharyngeal carcinoma treated with intensity-modulated radiotherapy.
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Affiliation(s)
- X Liu
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - L-Z Liu
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - Y-P Mao
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - L Chen
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - L-L Tang
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - G-Q Zhou
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - Y Sun
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - D Yue
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - A-H Lin
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-sen University, No. 74 Zhongshan Road, Guangzhou 510060, People's Republic of China
| | - L Li
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
| | - J Ma
- 1] State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China [2] Department of Radiation Oncology, Sun Yat-sen University Cancer Center, No. 651 Dongfeng Road East, Guangzhou 510060, People's Republic of China
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Yale JF, Bakris G, Cariou B, Yue D, David-Neto E, Xi L, Figueroa K, Wajs E, Usiskin K, Meininger G. Efficacy and safety of canagliflozin in subjects with type 2 diabetes and chronic kidney disease. Diabetes Obes Metab 2013; 15:463-73. [PMID: 23464594 PMCID: PMC3654568 DOI: 10.1111/dom.12090] [Citation(s) in RCA: 382] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 02/05/2013] [Accepted: 03/03/2013] [Indexed: 12/11/2022]
Abstract
AIMS Canagliflozin is a sodium glucose co-transporter 2 inhibitor in development for treatment of type 2 diabetes mellitus (T2DM). This study evaluated the efficacy and safety of canagliflozin in subjects with T2DM and stage 3 chronic kidney disease [CKD; estimated glomerular filtration rate (eGFR) ≥30 and <50 ml/min/1.73 m(2)]. METHODS In this randomized, double-blind, placebo-controlled, phase 3 trial, subjects (N = 269) received canagliflozin 100 or 300 mg or placebo daily. The primary efficacy endpoint was change from baseline in HbA1c at week 26. Prespecified secondary endpoints were change in fasting plasma glucose (FPG) and proportion of subjects reaching HbA1c <7.0%. Safety was assessed based on adverse event (AE) reports; renal safety parameters (e.g. eGFR, blood urea nitrogen and albumin/creatinine ratio) were also evaluated. RESULTS Both canagliflozin 100 and 300 mg reduced HbA1c from baseline compared with placebo at week 26 (-0.33, -0.44 and -0.03%; p < 0.05). Numerical reductions in FPG and higher proportions of subjects reaching HbA1c < 7.0% were observed with canagliflozin 100 and 300 mg versus placebo (27.3, 32.6 and 17.2%). Overall AE rates were similar for canagliflozin 100 and 300 mg and placebo (78.9, 74.2 and 74.4%). Slightly higher rates of urinary tract infections and AEs related to osmotic diuresis and reduced intravascular volume were observed with canagliflozin 300 mg compared with other groups. Transient changes in renal function parameters that trended towards baseline over 26 weeks were observed with canagliflozin. CONCLUSION Canagliflozin improved glycaemic control and was generally well tolerated in subjects with T2DM and Stage 3 CKD.
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Affiliation(s)
- J-F Yale
- Department of Medicine, Royal Victoria Hospital and McGill University, Montreal, Canada.
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Rashid F, Yue D, Austin A, Ravichandran D. 111 Is Triple Assessment Necessary in All Young Patients Referred to a Rapid Diagnosis Breast Clinic? Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70179-x] [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: 10/28/2022]
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31
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Hayworth JL, Kasper KJ, Leon-Ponte M, Herfst CA, Yue D, Brintnell WC, Mazzuca DM, Heinrichs DE, Cairns E, Madrenas J, Hoskin DW, McCormick JK, Haeryfar SMM. Attenuation of massive cytokine response to the staphylococcal enterotoxin B superantigen by the innate immunomodulatory protein lactoferrin. Clin Exp Immunol 2009; 157:60-70. [PMID: 19659771 DOI: 10.1111/j.1365-2249.2009.03963.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Staphylococcal enterotoxin B (SEB) is a pyrogenic exotoxin and a potent superantigen which causes massive T cell activation and cytokine secretion, leading to profound immunosuppression and morbidity. The inhibition of SEB-induced responses is thus considered a goal in the management of certain types of staphylococcal infections. Lactoferrin (LF) is a multi-functional glycoprotein with both bacteriostatic and bactericidal activities. In addition, LF is known to have potent immunomodulatory properties. Given the anti-microbial and anti-inflammatory properties of this protein, we hypothesized that LF can modulate T cell responses to SEB. Here, we report that bovine LF (bLF) was indeed able to attenuate SEB-induced proliferation, interleukin-2 production and CD25 expression by human leucocyte antigen (HLA)-DR4 transgenic mouse T cells. This inhibition was not due to bLF's iron-binding capacity, and could be mimicked by the bLF-derived peptide lactoferricin. Cytokine secretion by an engineered SEB-responsive human Jurkat T cell line and by peripheral blood mononuclear cells from healthy donors was also inhibited by bLF. These findings reveal a previously unrecognized property of LF in modulation of SEB-triggered immune activation and suggest a therapeutic potential for this naturally occurring protein during toxic shock syndrome.
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Affiliation(s)
- J L Hayworth
- Department of Microbiology and Immunology, University of Western Ontario, ON, USA
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32
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Yin T, Wang G, Du D, Yue D, Li Z, Wang Y, Luo L, Ruan C. Abstract: P484 ANALYSIS OF NEOINTIMAL HYPERPLASIA AFTER IMPLANTATION OF A MONOCLONAL ANTIBODY ELUTING STENT. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70779-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Han X, Zhong Q, Yue D, C� ND, Larock RC, Armstrong DW. Separation of Enantiomers of Isochromene Derivatives by HPLC Using Cyclodextrin-Based Stationary Phases. Chromatographia 2005. [DOI: 10.1365/s10337-004-0478-3] [Citation(s) in RCA: 11] [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: 11/05/2022]
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Yue D, Han QL. A Delay-Dependent Stability Criterion of Neutral Systems and its Application to a Partial Element Equivalent Circuit Model. ACTA ACUST UNITED AC 2004. [DOI: 10.1109/tcsii.2004.837286] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
AIMS Age of onset of type 2 diabetes is becoming earlier and with it there is an increase in the development of chronic complications. This study examined the relationship between the strength of family history of diabetes on (i) age of diabetes onset and (ii) prevalence of diabetic complications. RESEARCH DESIGN AND METHODS Data on family history of diabetes and age of diabetes onset were prospectively collected on 5193 subjects. Family members were deemed to include grandparents, parents, siblings, aunts/uncles and children. To adjust for family size and to assess effects of pathway to diagnosis, we also contacted a subset of 180 patients selected on the basis of the strength of family histories of diabetes. A full assessment for diabetic complications including retinopathy, neuropathy and renal and macrovascular status was performed for the total cohort. RESULTS The more cases of diabetes found in a family, the younger the age of onset of type 2 diabetes. This phenomenon does not appear to be due to patients with strong family history of diabetes being more concerned about the possibility of having diabetes. The effect of strong family history is also evident in many ethnic groups when examined individually, although they differ from each other in their characteristic age of onset of diabetes. Once adjusted for duration of diabetes, strength of family history does not appear to affect metabolic profiles or prevalence of chronic complications. CONCLUSIONS There is a strong relationship between the number of affected family members with diabetes and age of developing diabetes. The genetic and environmental factors underlying this phenomenon remain to be elucidated. However, it may be one of the reasons explaining why type 2 diabetes is affecting younger people worldwide.
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Affiliation(s)
- L Molyneaux
- The Diabetes Centre, Royal Prince Alfred Hospital, Sydney, NSW, Australia.
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Xu ZR, Molyneaux L, Wang YZ, Jing H, Liu Y, McGill M, Huang L, Yue D. Clustering of cardiovascular risk factors with diabetes in Chinese patients: the effects of sex and hyperinsulinaemia. Diabetes Obes Metab 2001; 3:157-62. [PMID: 11412279 DOI: 10.1046/j.1463-1326.2001.00137.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This study was designed to investigate factors which affect the clustering of cardiovascular risk factors with diabetes in Chinese patients. RESEARCH DESIGN AND METHODS Six hundred and fifty-four patients with diabetes were assessed comprehensively for diabetes complications and cardiovascular risk factors in a metropolitan hospital in Beijing, China. Insulin resistance and secretion were also evaluated by measurement of glucose and insulin levels before and after a meal tolerance test. Results were analysed according to patient groups stratified by the number of cardiovascular risk factors coexisting with diabetes. RESULTS Cardiovascular risk factors were common in Chinese diabetic patients. The clustering of three or more of these factors with diabetes occurred more often than by chance alone and was associated with postprandial hyperinsulinaemia. Patients with a high number of risk factors were more prone to macrovascular events but did not have higher albuminuria. Using the commonly adopted lower threshold for diagnosing obesity and central obesity in women, there were more women with multiple risk factors. However, this disappeared if the same criteria were used for men and women. Even in the presence of diabetes, cardiovascular risk factors were inadequately controlled in most patients. CONCLUSIONS The concurrence of diabetes and other cardiovascular risk factors which constitute the metabolic syndrome is a common phenomenon in urban Chinese diabetic patients. It is associated with hyperinsulinaemia and possibly the female sex. This study emphasises the importance of public health measures to control cardiovascular risk factors in patients with diabetes.
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Affiliation(s)
- Z R Xu
- Diabetes Centre, 306 Hospital, Beijing, China.
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40
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Sam W, Qin H, Crawford B, Yue D, Yu S. Homozygosity for a 4-bp deletion in a patient with Wolfram syndrome suggesting possible phenotype and genotype correlation. Clin Genet 2001; 59:136-8. [PMID: 11260218 DOI: 10.1034/j.1399-0004.2001.590214.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
We have studied the interactions between Escherichia coli tRNAVal and valyl-tRNA synthetase (ValRS) by enzymatic footprinting with nuclease S1 and ribonuclease V1, and by analysis of the aminoacylation kinetics of mutant tRNAVal transcripts. Valyl-tRNA synthetase specifically protects the anticodon loop, the 3' side of the stacked T-stem/acceptor-stem helix, and the 5' side of the anticodon stem of tRNAVal against cleavage by double- and single-strand-specific nucleases. Increased nuclease susceptibility at the ends of the anticodon- and T-stems in the tRNAVal.ValRS complex is indicative of enzyme-induced conformational changes in the tRNA. The most important synthetase recognition determinants are the middle and 3' anticodon nucleotides (A35 and C36, respectively); G20, in the variable pocket, and G45, in the tRNA central core, are minor recognition elements. The discriminator base, position 73, and the anticodon stem also are recognized by ValRS. Replacing wild-type A73 with G73 reduces the aminoacylation efficiency more than 40-fold. However, the C73 and U73 mutants remain good substrates for ValRS, suggesting that guanosine at position 73 acts as a negative determinant. The amino acid acceptor arm of tRNAVal contains no other synthetase recognition nucleotides, but regular A-type RNA helix geometry in the acceptor stem is essential [Liu, M., et al. (1997) Nucleic Acids Res. 25, 4883-4890]. In the anticodon stem, converting the U29:A41 base pair to C29:G41 reduces the aminoacylation efficiency 50-fold. This is apparently due to the rigidity of the anticodon stem caused by the presence of five consecutive C:G base pairs, since the A29:U41 mutant is readily aminoacylated. Identity switch experiments provide additional evidence for a role of the anticodon stem in synthetase recognition. The valine recognition determinants, A35, C36, A73, G20, G45, and a regular A-RNA acceptor helix are insufficient to transform E. coli tRNAPhe into an effective valine acceptor. Replacing the anticodon stem of tRNAPhe with that of tRNAVal, however, converts the tRNA into a good substrate for ValRS. These experiments confirm G45 as a minor ValRS recognition element.
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MESH Headings
- Anticodon/chemistry
- Anticodon/metabolism
- Base Sequence
- Binding Sites
- Endoribonucleases/chemistry
- Escherichia coli/enzymology
- Kinetics
- Molecular Sequence Data
- Mutagenesis, Site-Directed
- Nuclear Magnetic Resonance, Biomolecular
- RNA, Transfer, Phe/chemistry
- RNA, Transfer, Phe/genetics
- RNA, Transfer, Phe/metabolism
- RNA, Transfer, Val/chemistry
- RNA, Transfer, Val/metabolism
- Single-Strand Specific DNA and RNA Endonucleases/chemistry
- Valine-tRNA Ligase/chemistry
- Valine-tRNA Ligase/genetics
- Valine-tRNA Ligase/metabolism
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Affiliation(s)
- J Horowitz
- Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University, Ames 50011, USA.
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Maizels N, Weiner AM, Yue D, Shi PY. New evidence for the genomic tag hypothesis: archaeal CCA-adding enzymes and tDNA substrates. Biol Bull 1999; 196:331-334. [PMID: 10390831 DOI: 10.2307/1542963] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- N Maizels
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06520-8024, USA
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Abstract
Psychotherapy training programs require a uniform introduction to psychotherapy that presents the basic, generic concepts common to the major schools in a time-efficient manner. The program described in this article fits these criteria. The program has been initiated at seven residency training programs in the United States. The authors describe the six modules comprising the program-verbal response modes and intentions, working alliance, inducing patterns, change, resistance, and transference and countertransference. The authors also report preliminary results of the program evaluation (N = 15) from the University of Missouri-Columbia. By using a well-researched measure of trainee self-confidence as psychotherapist (The Counselor Self-Estimate Inventory), the authors report a statistically significant increase in trainee self-confidence beginning and maintained after Module 4. The authors conclude that this training shows promise as a standard introduction to psychotherapy for psychiatric residents.
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Affiliation(s)
- B D Beitman
- Department of Psychiatry and Neurology, University of Missouri-Columbia, Three Hospital Drive, Columbia, MO, 65201, USA
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Brooks B, Chong R, Ho I, Capstick F, Molyneaux L, Oo TT, Tester M, Yue D. Diabetic retinopathy and nephropathy in Fiji: comparison with data from an Australian diabetes centre. Aust N Z J Ophthalmol 1999; 27:9-13. [PMID: 10080331 DOI: 10.1046/j.1440-1606.1999.00146.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND As part of a project to improve diabetes care in Fiji, we assessed the magnitude of problems posed by diabetic retinopathy in that country and compared the findings with those from an Australian diabetes centre. The relationship between diabetic retinopathy and nephropathy was also examined in a subset of patients. METHODS A medical team from Australia screened a total of 446 type 2 diabetic patients (ethnicity: Fijian/Indian 16/84%) for diabetic retinopathy in five towns from the Division of Viti Levu, Fiji. The findings were compared with data obtained from 1659 type 2 diabetic patients who had attended an Australian diabetes centre (ethnicity Indian/ Anglo-Celtic 12/88%). In both cohorts, retinopathy was assessed by direct fundoscopy and a spot urine sample was collected for determination of albuminuria (defined as a concentration > 50 mg/L). RESULTS The prevalence of diabetic retinopathy increased linearly with duration of diabetes. It was higher in Fiji, even when cases from the same ethnicity (i.e. Indians) and duration were compared (P < 0.05). Extrapolation of the data points suggests a delay in the diagnosis of diabetes in Fiji. Of those patients with retinopathy in Fiji, more than half had moderate to severe non-proliferative diabetic retinopathy or proliferative diabetic retinopathy, significantly higher than patients in the Australian cohort (chi2 = 29.2; P < 0.0001). Retinopathy was not a predictor of albuminuria in Fijian Indians (chi2 = 0.4; P = 0.5). In contrast, Australian Indians with retinopathy had significantly more albuminuria (chi2 = 10.2; P = 0.001). CONCLUSIONS Severe diabetic retinopathy is common in both ethnic groups in Fiji. A delay in the diagnosis of diabetes as well as poor glycaemic control are possible factors. The availability of laser therapy is important to prevent loss of vision, but it is also essential that appropriate training of health professionals is integrated with a programme of diabetic complication screening to support this form of therapy.
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Affiliation(s)
- B Brooks
- Diabetes Centre, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
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Abstract
The CCA-adding enzyme (tRNA nucleotidyltransferase) synthesizes and repairs the 3'-terminal CCA sequence of tRNA. The eubacterial, eukaryotic, and archaeal CCA-adding enzymes all share a single active-site signature motif, which identifies these enzymes as belonging to the nucleotidyltransferase superfamily. Here we show that mutations at Asp-53 or Asp-55 of the Sulfolobus shibatae signature sequence abolish addition of both C and A, demonstrating that a single active site is responsible for addition of both nucleotides. Mutations at Asp-106 (and to a lesser extent, at Glu-173 and Asp-215) selectively impaired addition of A, but not C. We have previously demonstrated that the tRNA acceptor stem remains fixed on the surface of the CCA-adding enzyme during C and A addition (Shi, P.-Y., Maizels, N., and Weiner, A. M. (1998) EMBO J. 17, 3197-3206). Taken together with this new evidence that there is a single active site for catalysis, our data suggest that specificity of nucleotide addition is determined by a process of collaborative templating: as the single active site catalyzes addition of each nucleotide, the growing 3'-end of the tRNA would progressively refold to create a binding pocket for addition of the next nucleotide.
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Affiliation(s)
- D Yue
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06520-8024, USA
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Kim JH, Hui P, Yue D, Aycock J, Leclerc C, Bjoring AR, Perkins AS. Identification of candidate target genes for EVI-1, a zinc finger oncoprotein, using a novel selection strategy. Oncogene 1998; 17:1527-38. [PMID: 9794230 DOI: 10.1038/sj.onc.1202331] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have sought to identify and isolate target genes for the zinc finger protein, EVI-1, which has been implicated in the genesis of myelogenous leukemia both in mouse and human. We have approached this with a two-step selection: we first selected for genomic fragments of mouse DNA that bind to the protein with high affinity; second, we employed cDNA hybrid selection to identify gene sequences contained within these fragments. We show that we have constructed a sublibrary of genomic fragments that contains a significant fraction of the EVI-1-binding sites in the mouse genome. Our data has allowed us to estimate that there are approximately 4300 binding sites per haploid genome in the mouse. We further demonstrate that by using cDNA hybrid selection, it is relatively straightforward to isolate cDNAs that correspond to genes embedded in the EVI-1-binding sublibrary. Several of these are novel, but are represented in databases of anonymous human or mouse cDNAs (expressed sequence tags). One selected gene is Itpr2, encoding the inositol trisphosphate type two receptor, which is transcriptionally regulated during myelopoiesis. Finally, using a chimeric EVI-1-VP16-fusion protein under the control of a tetracycline-regulated system, we have shown that this chimeric activator can directly regulate Itpr2.
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Affiliation(s)
- J H Kim
- Yale University, Department of Pathology, New Haven, Connecticut 06520-8023, USA
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Heffernan S, James V, Zilkens R, Kirwan P, Birrell A, McLennan S, Hennessy A, Gillin A, Horvath J, Tiller D, Yue D, Turtle J. Changes of extracellular matrix in a baboon (Papio hamadryas) model of insulin dependent diabetes: studies using electron microscopy and X-ray diffraction techniques. Diabetes Res Clin Pract 1996; 34:65-72. [PMID: 9031807 DOI: 10.1016/s0168-8227(96)01335-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Extracellular matrix plays an important role in many physiological functions and its abnormalities are thought to play a key role in the pathogenesis of diabetic complications. In this paper we used the techniques of electron microscopy, immunostaining and X-ray diffraction to document some of the early events in the changes of extracellular matrix in a model of insulin dependent diabetes in baboons. Our results show that thickening of basement membrane and enlargement of mesangium are demonstrable in the glomeruli of prepubertal diabetic baboons within 2 years from the onset of diabetes. Concomitant with this was the accumulation of type IV collagen and laminin in the mesangium. By contrast, even the very sensitive technique of X-ray diffraction failed to demonstrate changes in the equatorial direction of collagen molecules of the skin and tendon. We conclude that changes of glomerular extracellular matrix are demonstrable early in insulin dependent diabetes even in prepubertal baboons. These can be used as endpoints in evaluating the efficacy of pharmacological agents such as aminoguanidine in preventing diabetic complications.
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Affiliation(s)
- S Heffernan
- Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, Australia
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Yue D, Maizels N, Weiner AM. CCA-adding enzymes and poly(A) polymerases are all members of the same nucleotidyltransferase superfamily: characterization of the CCA-adding enzyme from the archaeal hyperthermophile Sulfolobus shibatae. RNA 1996; 2:895-908. [PMID: 8809016 PMCID: PMC1369424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We describe the purification, cloning, and characterization of the CCA-adding enzyme [ATP(CTP):tRNA nucleotidyl transferase] from the thermophilic archaebacterium, Sulfolobus shibatae. Characterization of an archaeal CCA-adding enzyme provides formal proof that the CCA-adding activity is present in all three contemporary kingdoms. Antibodies raised against recombinant, expressed Sulfolobus CCA-adding enzyme reacted specifically with the 48-kDa protein and fully depleted all CCA-adding activity from S. shibatae crude extract. Thus, the cloned cca gene encodes the only CCA-adding activity in S. shibatae. Remarkably, the archaeal CCA-adding enzyme exhibits no strong homology to either the eubacterial or eukaryotic CCA-adding enzymes. Nonetheless, it does possess the active site signature G[SG][LIVMFY]xR[GQ]x5,6D[LIVM][CLIVMFY]3-5 of the nucleotidyltransferase superfamily identified by Holm and Sander (1995, Trends Biochem Sci 20:345-347) and sequence comparisons show that all known CCA-adding enzymes and poly(A) polymerases are contained within this superfamily. Moreover, we propose that the superfamily can now be divided into two (and possibly three) subfamilies: class I, which contains the archaeal CCA-adding enzyme, eukaryotic poly(A) polymerases, and DNA polymerase beta; class II, which contains eubacterial and eukaryotic CCA-adding enzymes, and eubacterial poly(A) polymerases; and possibly a third class containing eubacterial polynucleotide phosphorylases. One implication of these data is that there may have been intraconversion of CCA-adding and poly(A) polymerase activities early in evolution.
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Affiliation(s)
- D Yue
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114, USA
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49
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Li Z, Zhang N, Yue D. [Experimental steroid osteonecrosis in rabbits and pathologic findings]. Zhonghua Wai Ke Za Zhi 1995; 33:485-7. [PMID: 8706566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Osteonecrosis of femoral head was experimentally induced in adult rabbits by employing a combined protocol of hypersensitive vasculitis and administration of high dose corticosteroids. By using India ink introartery infusion microangiography and pathologic examination, we found that the damage of terminal arterioles and interruption of blood supply of terminal arteriole was causative pathogenesis. In the early phase, the haemopoietic necrosis and enlargement of fat cell in the bone marrow occurred. The perfused arterioles decreased, especially in the subchondrol bone. In the later phase, the osteocytes showed necrotic fibrosis in bone marrow. The perfused arterioles increased gradually and repairtive changes began.
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Affiliation(s)
- Z Li
- Department of Orthopaedic Surgery, China-Japan Friendship Hospital, Beijing
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50
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Yue D, Yang X. [Uses of interventional arteriographic technics in gynecologic neoplasms]. Zhonghua Fu Chan Ke Za Zhi 1995; 30:435-7. [PMID: 7587579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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