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Hao Z, Hu L, Yan R, Pei L, Mo S. Sensitive fluorescent detection of o-aminophenol by hemicyanine boronic acid. Spectrochim Acta A Mol Biomol Spectrosc 2024; 304:123341. [PMID: 37688883 DOI: 10.1016/j.saa.2023.123341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/18/2023] [Accepted: 09/01/2023] [Indexed: 09/11/2023]
Abstract
O-Aminophenol (OAP) is widely used in various industries, but it can have severe negative impacts on both the environment and human health. Herein, we reported the development of hemicyanine boronic acid (HBA) for the fluorescent detection of OAP. The reaction of HBA with OAP produced a strong fluorescence emission at 675 nm because of the generation of tricyclic borate ester hemicyanine (TBEH). The detection was very rapid, sensitive and specific. The detection had a linear range 0.1 - 10.0 µM in ethanol with a detection limit of 60 nM in water and ethanol. The accuracy and precision of our results were successfully verified via HPLC analysis. Our study offers a valuable tool for the facile and efficient detection of OAP, with practical applications in environmental and health management.
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Affiliation(s)
- Zhenming Hao
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing 100124, China
| | - Liming Hu
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing 100124, China
| | - Ruyu Yan
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing 100124, China
| | - Luyu Pei
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing 100124, China
| | - Shanyan Mo
- Faculty of Environment and Life, Beijing Key Laboratory of Environmental and Viral Oncology, Beijing University of Technology, Beijing 100124, China.
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Li J, Lin S, Yan X, Pei L, Wang Z. Adverse Childhood Experiences and Trajectories of ADL Disability among Middle-Aged and Older Adults in China: Findings from the CHARLS Cohort Study. J Nutr Health Aging 2022; 26:1034-1041. [PMID: 36519765 DOI: 10.1007/s12603-022-1863-z] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES There is little evidence on the association between adverse childhood experiences (ACEs) and disability trajectories among middle-aged and older adults. This study aimed to investigate the association between ACEs and activities of daily living (ADL) trajectories over eight years of follow-up and the mediation role of different chronic diseases on this relationship. DESIGN Prospective cohort study, eight-year follow-up. SETTING China Health and Retirement Longitudinal Study(CHARLS). PARTICIPANTS A total of 10651 participants age 45 and over from CHARLS 2011 to 2018 were included in this study. MEASUREMENTS Five ACEs exposure groups were formed based on the cumulative ACE scores. A 6-item ADL score was used, including bathing, dressing, eating, getting in/out of bed, using the toilet, and controlling urination, to measure the ADL disability, and the group-based trajectory model (GBTM) was used to identify the ADL disability trajectories. Multinomial logistic regression was performed to investigate the association between ACEs and ADL disability trajectory memberships, and KHB-method was used to estimate the contribution of different chronic diseases on this relationship. RESULTS Of the 10651 participants, 9.64% showed a mild-increasing trajectory in terms of change in ADL score during follow-up, followed by the low-mild trajectory (32.00%) and low-low trajectory (58.36%). Compared with those without ACEs exposure, participants who had ≥4 ACEs were associated with an increased risk of being on low-mild trajectory (OR 1.32, 95%CI:1.11-1.57) and mild-increasing trajectory (OR 1.41, 95%CI: 1.06-1.89), respectively. Besides, mediation analysis revealed chronic diseases had a mediation effect in this association, with the largest effect from arthritis or rheumatism (over 60%), followed by digestive system disease (around 14%), respiratory disease (around 12%), and cardio-metabolic disease (around 5%). CONCLUSION This study suggested that exposure to ACEs was associated with a higher risk of being worse ADL disability trajectories. Moreover, chronic disease accounts for a meaningful proportion of this association. Further studies are needed to clarify how chronic diseases mediate the association between ACEs and ADL disability trajectories.
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Affiliation(s)
- J Li
- Lijun Pei, PhD, Institute of Population Research/China Center on Population Health and development, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China, ; Tel and fax: +86 010-62751974
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Sun G, Zhang Y, Pei L, Lou Y, Mu Y, Yun J, Li F, Wang Y, Hao Z, Xi S, Li C, Chen C, Zhao L, Zhang N, Zhong R, Peng Y. Chemometric QSAR modeling of acute oral toxicity of Polycyclic Aromatic Hydrocarbons (PAHs) to rat using simple 2D descriptors and interspecies toxicity modeling with mouse. Ecotoxicol Environ Saf 2021; 222:112525. [PMID: 34274838 DOI: 10.1016/j.ecoenv.2021.112525] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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: 05/23/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
The information of the acute oral toxicity for most polycyclic aromatic hydrocarbons (PAHs) in mammals are lacking due to limited experimental resources, leading to a need to develop reliable in silico methods to evaluate the toxicity endpoint. In this study, we developed the quantitative structure-activity relationship (QSAR) models by genetic algorithm (GA) and multiple linear regression (MLR) for the rat acute oral toxicity (LD50) of PAHs following the strict validation principles of QSAR modeling recommended by OECD. The best QSAR model comprised eight simple 2D descriptors with definite physicochemical meaning, which showed that maximum atom-type electrotopological state, van der Waals surface area, mean atomic van der Waals volume, and total number of bonds are main influencing factors for the toxicity endpoint. A true external set (554 compounds) without rat acute oral toxicity values, and 22 limit test compounds, were firstly predicted along with reliability assessment. We also compared our proposed model with the OPERA predictions and recently published literature to prove the prediction reliability. Furthermore, the interspecies toxicity (iST) models of PAHs between rat and mouse were also established, validated and employed for filling data gap. Overall, our developed models should be applicable to new or untested or not yet synthesized PAHs falling within the applicability domain (AD) of the models for rapid acute oral toxicity prediction, thus being important for environmental or personal exposure risk assessment under regulatory frameworks.
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Affiliation(s)
- Guohui Sun
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China.
| | - Yifan Zhang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Luyu Pei
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Yuqing Lou
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Yao Mu
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Jiayi Yun
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Feifan Li
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Yachen Wang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Zhaoqi Hao
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Sha Xi
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Chen Li
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Chuhan Chen
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Lijiao Zhao
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China.
| | - Na Zhang
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Rugang Zhong
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Chemistry, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, PR China
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Chen QL, Shuai J, Pei L, Huang GN, Ye H. [Impact of trigger timing of gonadotropin-releasing hormone antagonist regimen for infertility patients of various ages]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:474-481. [PMID: 34304439 DOI: 10.3760/cma.j.cn112141-20210330-00165] [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 the impact of trigger timing of gonadotropin- releasing hormone (GnRH) antagonist regimen for infertility patients of various ages. Methods: This was a retrospective study, 1 529 infertility patients who receiving GnRH antagonist regimen in Chongqing Health Center for Women and Children from January 2017 to December 2018 were divided into the advance trigger group and the standard trigger group, and further divided into three subgroups according to age:<35 years, 35-40 years,>40 years. The number of retrieved oocytes and transplantable embryos, the clinical pregnancy rate and the live birth rate among patients in the advance trigger group and standard trigger group in various age subgroups were compared. Results: (1) The gonadotropin (Gn) days among the three age subgroups were significantly shorter in the advance trigger group compared to the same-aged standard trigger group (all P<0.01), but only in the 35-40 years and >40 years subgroups, the Gn doses in the advance trigger group [(2 702±551) and (2 780±561) U] were significantly less than those in the standard trigger group (all P<0.01). In the <35 years subgroup, the number of oocytes retrieved and transplantable embryos of the advance trigger group (6.6±4.8 and 2.6±2.7) were significantly less than those of the standard trigger group (all P<0.01), but there was no difference in the number of top-quality embryos (P=0.580); however, in the 35-40 years and >40 years subgroups, there were no significant differences between advance and standard trigger groups in terms of the afore mentioned 3 indicators (all P>0.05), only the numbers of top-quality embryos in the advance trigger group (0.6±1.0 and 0.6±0.9) were significantly higher than those in the standard trigger group (all P<0.01). (2) In the <35 years and 35-40 years subgroups, no significant differences were noted between the advance trigger group and standard trigger group with regard to the clinical pregnancy rate and live birth rate (all P>0.05); but in the >40 years subgroup, the clinical pregnancy rate of the advance trigger group was significantly higher than that of the standard trigger group [33.0% (30/91) vs 19.2% (25/130), P=0.020], and there was no statistical difference in the live birth rate (P=0.064). (3) Multivariate logistic regression analysis showed that trigger timing was an independent predictor of clinical pregnancy rate in the >40 years subgroup (OR=0.334, 95%CI: 0.119-0.937, P=0.037), but not an independent predictor of live birth rate (P>0.05). Conclusions: Advance trigger in the GnRH antagonist protocol for infertility patients >40 years old could effectively reduce Gn times and Gn dosage, increase the number of top-quality embryos, and improve the clinical pregnancy rate. Therefore, compared with patients ≤40 years of age, patients >40 years might benefit more from advance trigger.
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Affiliation(s)
- Q L Chen
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - J Shuai
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - L Pei
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - G N Huang
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
| | - H Ye
- Reproductive Medical Center, Chongqing Health Center for Women and Children, Chongqing 400013, China
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Zhao Z, Li KP, Wang YY, Pei L, Guan ZW, Jin JY, Zhu J, Zhang JL, Huang F. [The prediction of disease progression by 18Fluorodeoxyglucose-positron emission computed tomography/CT in patients with dermatomyositis and interstitial lung disease]. Zhonghua Nei Ke Za Zhi 2021; 60:661-664. [PMID: 34619844 DOI: 10.3760/cma.j.cn112138-20201119-00954] [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: 06/13/2023]
Abstract
To investigate the predictive value of [18F]fluorodeoxyglucose-positron emission computed tomography(PET)/CT for disease progression in patients with dermatomyositis (DM) and interstitial lung diseases (ILD). Sixty-seven DM patients who underwent [18F] FDG-PET/CT imaging were retrospectively analyzed from January 2012 to September 2017 at PLA General Hospital. Their clinical manifestations and imaging characteristics were recorded. Compared with those chronically progressed (C-ILD), patients with rapid progression (RP-ILD) had significantly higher erythrocyte sedimentation rate (ESR) and standardized uptake value (SUV) in lungs (P<0.05). In patients with RP-ILD, SUV in lungs was positively correlated with age, disease course, and ESR. Receiver operating characteristic curve analysis suggested that when lung SUV cut off value was 2.25, the sensitivity and specificity to predict disease progression was 77.8% and 72.8%, respectively. Old age, longer disease course, low creatine kinase level, higher ESR, and high SUV are prognostic factors for DM-associated ILD.
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Affiliation(s)
- Z Zhao
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - K P Li
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - Y Y Wang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - L Pei
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - Z W Guan
- Department of Nuclear Medicine, PLA General Hospital, Beijing 100853, China
| | - J Y Jin
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - J Zhu
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - J L Zhang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
| | - F Huang
- Department of Rheumatology and Immunology, PLA General Hospital, Beijing 100853, China
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Zuo ZG, Pei L, Liu XJ, Qiu F. [Lung cancer with intracranial hypotension: a case report]. Zhonghua Zhong Liu Za Zhi 2020; 42:971-972. [PMID: 33256311 DOI: 10.3760/cma.j.cn112152-20190406-00217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Z G Zuo
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - L Pei
- Department of Clinical Laboratory, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - X J Liu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
| | - F Qiu
- Department of Critical Medicine, the First Hospital of Qinhuangdao, Qinhuangdao 066000, China
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Tian X, Guo Y, Wang X, Pei L, Wang X, Wu J, Sun S, Li Y, Ning M, Buonanno FS, Xu Y, Song B. Serum soluble ST2 is a potential long-term prognostic biomarker for transient ischaemic attack and ischaemic stroke. Eur J Neurol 2020; 27:2202-2208. [PMID: 32593220 DOI: 10.1111/ene.14419] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 03/28/2020] [Accepted: 06/22/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE Soluble ST2 (sST2) is a promising biomarker in inflammation, atherosclerosis and cardiovascular diseases. We investigated the association between serum sST2 and poor outcome in patients with transient ischaemic attack (TIA)/ischaemic stroke. METHODS Patients within 24 h after onset and with measured serum sST2 were prospectively enrolled in this study. Poor outcome was a combination of a new stroke event (ischaemic or haemorrhagic) and all-cause death within 90 days and 1 year. The associations of serum sST2 with poor outcome were analysed by Cox proportional hazards. RESULTS Among the 430 patients included, the median (interquartile range) sST2 was 17.72 (9.31-28.84) ng/mL. A total of 19 (4.4%) and 38 (8.8%) patients experienced poor outcome within 90 days and 1 year, respectively. Compared with the lowest sST2 tertile, hazard ratios (HRs) [95% confidence intervals (CI)] for the highest tertile were 5.14 (1.43-18.51) for poor outcome within 90 days and 3.00 (1.29-6.97) at 1 year after multivariate adjustments. Adding sST2 to a prediction model significantly improved risk stratification of poor outcome in TIA/ischaemic stroke, as observed by the continuous net reclassification improvement of 60.98% (95% CI, 15.37-106.6%, P = 0.009) and integrated discrimination improvement of 2.63% (95% CI, 0.08-5.18%, P = 0.043) at 90 days and the continuous net reclassification improvement of 41.68% (95% CI, 8.74-74.61%, P = 0.013) at 1 year. CONCLUSIONS Increased serum sST2 levels in TIA/ischaemic stroke were associated with increased risks of poor outcome within 90 days and 1 year, suggesting that serum sST2 may be a potential long-term prognostic biomarker for TIA/ischaemic stroke.
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Affiliation(s)
- X Tian
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - Y Guo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - X Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - L Pei
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - X Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - J Wu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - S Sun
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - Y Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - M Ning
- Clinical Proteomics Research Centre and Cardio-Neurology Clinic, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - F S Buonanno
- Clinical Proteomics Research Centre and Cardio-Neurology Clinic, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Y Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
| | - B Song
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou, China
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Song X, Pei L, Zhang Y, Chen X, Zhong Q, Ji Y, Tang J, Feng F, Li B. Functional diversification of three delta-class glutathione S-transferases involved in development and detoxification in Tribolium castaneum. Insect Mol Biol 2020; 29:320-336. [PMID: 31999035 DOI: 10.1111/imb.12637] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 09/23/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Glutathione S-transferases (GSTs) are members of a multifunctional enzyme superfamily. Forty-one GSTs have been identified in Tribolium castaneum; however, none of the 41 GSTs has been functionally characterized. Here, three delta-class GSTs, TcGSTd1, TcGSTd2 and TcGSTd3, of T. castaneum were successfully cloned and expressed in Escherichia coli. All of the studied GSTs catalysed the conjugation of reduced glutathione with 1-chloro-2,4-dinitrobenzene. Insecticide treatment showed that the expression levels of TcGSTd3 and TcGSTd2 were significantly increased after exposure to phoxim and lambda-cyhalothrin, whereas TcGSTd1 was slightly upregulated only in response to phoxim. A disc diffusion assay showed that overexpression of TcGSTD3, but not TcGSTD1 or TcGSTD2, in E. coli increased resistance to paraquat-induced oxidative stress. RNA interference knockdown of TcGSTd1 caused metamorphosis deficiencies and reduced fecundity by regulating insulin/target-of-rapamycin signalling pathway-mediated ecdysteroid biosynthesis, and knockdown of TcGSTd3 led to reduced fertility and a decreased hatch rate of the offspring, probably caused by the reduced antioxidative activity in the reproductive organs. These results indicate that TcGSTd3 and TcGSTd2 may play vital roles in cellular detoxification, whereas TcGSTd1 may play essential roles in normal development of T. castaneum. These delta-class GSTs in T. castaneum have obtained different functions during the evolution.
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Affiliation(s)
- X Song
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - L Pei
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Y Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - X Chen
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Q Zhong
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Y Ji
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Tang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | | | - B Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Wang F, Al-Jumayli M, D'Rummo K, Pei L, Huang C. PD01.18 Beneficial Effect of Antibiotic Use in Patients with Stage IV NSCLC Treated with Immune Checkpoint Inhibitors. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.09.054] [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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He XQ, Ning TG, Pei L, Zheng JJ, Li J, Wen XD. Tunable hybridization of graphene plasmons and dielectric modes for highly confined light transmit at terahertz wavelength. Opt Express 2019; 27:5961-5972. [PMID: 30876188 DOI: 10.1364/oe.27.005961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/06/2019] [Indexed: 06/09/2023]
Abstract
We theoretically report a novel graphene-based hybrid plasmonic waveguide (GHPW) by integrating a GaAs micro-tube on a silica spacer that is supported by a graphene-coated substrate. In comprehensive numerical simulations on guiding properties of the GHPW, it was found that the size of hybrid plasmonic mode (TM) can be reduced significantly to ~10-4(λ2/4), in conjunction with long propagation distances up to tens of micrometers by tuning the the waveguide's key structure parameters and graphene's chemical potential. Moreover, crosstalk between two adjacent GHPWs that are placed on the same substrate has been analyzed and ultralow crosstalk can be realized. The proposed scheme potentially enables realization of the various high performance nanophotonic components-based subwavelength plasmonic waveguides in terahertz domain.
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Wang S, Wang S, Pei L. Effect of goserelin on the preservation of ovarian reserve function during (neo)adjuvant chemotherapy for young breast cancer patients: a prospective, non-randomized, open-label, cohort study (Interim analysis of proof study) (NCT02430103). Breast 2019. [DOI: 10.1016/s0960-9776(19)30432-1] [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: 11/29/2022] Open
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Arcand S, Luo L, Zhong S, Pei L, Bian X, Winkler J. Modeled changes to the Great Plains low-level jet under a realistic irrigation application. Atmos Sci Lett 2019; 20:e888. [PMID: 31191173 PMCID: PMC6555437 DOI: 10.1002/asl.888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
Low-level jets (LLJs) are relatively fast-moving streams of air that form in the lower troposphere and are a common phenomenon across the Great Plains (GP) of the United States. LLJs play an important role in moisture transport and the development of nocturnal convection in the spring and summer. Alterations to surface moisture and energy fluxes can influence the planetary boundary layer (PBL) development and thus LLJs. One important anthropogenic process that has been shown to affect the surface energy budget is irrigation. In this study, we investigate the effects of irrigation on LLJ development across the GP by incorporating a dynamic and realistic irrigation scheme into the Weather Research and Forecasting (WRF) model. WRF simulations were conducted with and without the irrigation scheme for the exceptionally dry summer of 2012 over the GP. The results show irrigation-introduced changes to LLJ features both over and downstream of the most heavily irrigated regions in the GP. There were statistically significant increases to LLJ speeds in the simulation with the irrigation parameterization. Decreases to the mean jet core height on the order of 50 m during the overnight hours were also simulated when irrigation was on. The overall frequency of jet occurrences increased over the irrigated regions by 5-10%; however, these differences were not statistically significant. These changes were weaker than those reported in earlier studies based on simple representations of irrigation that unrealistically saturate the soil columns over large areas over a long period of time, which highlights the importance and necessity to represent human activity more accurately in modeling studies.
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Affiliation(s)
- S. Arcand
- Department of Geography, Environment, and Spatial SciencesMichigan State UniversityEast LansingMichigan
| | - L. Luo
- Department of Geography, Environment, and Spatial SciencesMichigan State UniversityEast LansingMichigan
| | - S. Zhong
- Department of Geography, Environment, and Spatial SciencesMichigan State UniversityEast LansingMichigan
| | - L. Pei
- Department of Geography, Environment, and Spatial SciencesMichigan State UniversityEast LansingMichigan
- Department of Earth and Environmental SciencesMichigan State UniversityEast LansingMichigan
| | - X. Bian
- United States Forest ServiceNorthern Research StationEast LansingMichigan
| | - J.A. Winkler
- Department of Geography, Environment, and Spatial SciencesMichigan State UniversityEast LansingMichigan
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13
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Yang SN, Pu X, Xiang SL, Chen JP, Pei L. [Brain derived neurotrophic factor enhances the role of mesenchymal stem cells in inhibiting follicular helper T cells]. Zhonghua Xue Ye Xue Za Zhi 2019; 39:37-40. [PMID: 29551031 PMCID: PMC7343120 DOI: 10.3760/cma.j.issn.0253-2727.2018.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
目的 探讨脑源性神经营养因子(BDNF)增强间充质干细胞(MSC)抑制滤泡辅助性T细胞(Tfh细胞)的作用及机制。 方法 ELISA法检测MSC培养上清中吲哚胺2,3-二加氧酶(IDO)、IL-10、TGF-β和IL-21的含量;采集健康志愿者的外周血标本,采用人淋巴细胞分离液分离外周血中的淋巴细胞;采用Transwell小室进行MSC和淋巴细胞共培养,流式细胞术检测CD4+CXCR5+ Tfh细胞及其亚群的比例。 结果 ①BDNF组(BDNF刺激的MSC)培养上清IL-10、TGF-β、IDO浓度均高于对照组(加入等体积磷酸盐缓冲液)[IL-10:(42.1±4.4)ng/ml对(19.3±2.1)ng/ml,t=4.761,P=0.009;TGF-β:(13.9±1.7)ng/ml对(5.3±0.6)ng/ml,t=5.129,P=0.008;IDO:(441.3±56.9)ng/ml对(226.7±37.6)ng/ml,t=3.130,P=0.035];②BDNF组(淋巴细胞与BDNF刺激的MSC共培养)与MSC组(淋巴细胞与MSC共培养)比较:CD4+CXCR5+Tfh细胞比例降低[(3.37±0.21)%对(6.51±0.27)%,t=9.353,P<0.001],CD4+ CXCR5+ CXCR3+ CCR6−Tfh1细胞比例升高[(41.14±2.04)%对(26.72±2.57)%,t=4.383,P=0.012],CD4+CXCR5+CXCR3−CCR6−Tfh2细胞和CD4+CXCR5+CXCR3−CCR6+Tfh17细胞比例降低[Tfh2:(30.16±5.38)%对(43.26±4.11)%,t=4.426,P=0.012;Tfh17:(15.61±1.52)%对(22.32±0.72)%,t=4.202,P=0.014],CD4+CXCR5+Foxp3+ Tfr细胞比例升高[(4.95±0.22)%对(2.32±0.16)%,t=10.241,P<0.001],淋巴细胞培养上清中IL-21浓度降低[(0.28±0.03)ng/ml对(0.85±0.08)ng/ml,t=6.675,P=0.003]。 结论 BDNF能够增强MSC抑制Tfh细胞的作用,机制是抑制淋巴细胞中Tfh细胞比例升高及其向Tfh2和Tfh17亚群的分化。
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Affiliation(s)
- S N Yang
- Department of Hematology, Southwest Hospital, Army Medical University, Chongqing 400038, China
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14
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Song B, Hu R, Pei L, Cao Y, Chen P, Sun S, Wang X, Tian X, Guo Y, Xu Y. Dual antiplatelet therapy reduced stroke risk in high-risk patients with transient ischaemic attack assessed by ABCD3-I score. Eur J Neurol 2018; 26:610-616. [PMID: 30414298 DOI: 10.1111/ene.13864] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 11/06/2018] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND PURPOSE Several clinical trials have demonstrated that dual antiplatelet therapy (DAPT) benefited patients with transient ischaemic attack (TIA) with an ABCD2 score ≥4. The present study aimed to investigate whether the ABCD3-I score could be a more appropriate tool for selection of patients with TIA to receive DAPT in real-world settings. METHODS We derived data from the TIA database of The First Affiliated Hospital of Zhengzhou University. The predictive outcome was ischaemic stroke at 90 days. The additive interaction effect was presented by the attributable proportion due to interaction. Kaplan-Meier curves were plotted to present cumulative stroke rates in different risk categories with monotherapy and DAPT. Cox proportional hazards regression was used to determine risk factors associated with stroke. RESULTS Among 785 patients, the mean (SD) age was 56.95 (12.73) years and 77 patients (9.8%) had an ischaemic stroke at 90 days. A total of 55.8% of patients (attributable proportion due to interaction; 95% confidence interval, 20.8%-90.9%) were attributed to additive interaction of ABCD3-I score and antiplatelet therapy. Kaplan-Meier curves showed a significant difference between patients receiving monotherapy and DAPT in high-risk patients with TIA (P = 0.021). DAPT reduced 90-day stroke risk in high-risk patients with TIA as assessed independently by ABCD3-I score (adjusted hazard ratio, 0.43; 95% confidence interval, 0.20-0.92, P = 0.031). The benefit did not exist in low- and medium-risk patients by ABCD3-I score (patients with ABCD2 score ≥ 4 or <4). CONCLUSIONS High-risk patients with TIA assessed by ABCD3-I score received the most pronounced clinical benefit from early use of DAPT in real-world clinical experience.
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Affiliation(s)
- B Song
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - R Hu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - L Pei
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Y Cao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - P Chen
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - S Sun
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - X Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - X Tian
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Y Guo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Y Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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15
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Liu C, Chu C, Zhang J, Wu D, Xu D, Li P, Chen Y, Liu B, Pei L, Zhang L, Liu S, Qi T, Lou XY, Li L. IRX3 is a genetic modifier for birth weight, adolescent obesity and transaminase metabolism. Pediatr Obes 2018; 13:141-148. [PMID: 28316138 DOI: 10.1111/ijpo.12214] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/20/2017] [Indexed: 01/29/2023]
Abstract
OBJECTIVE IRX3 expression has been functionally associated in obesity-associated long-distance susceptibility loci, but the effect of the IRX3 genetic variants on human obesity and obesity-related metabolism remains uncertain. METHODS To determine the genetic role of IRX3, we conducted a molecular epidemiological analysis using three haplotype tagging single nucleotide polymorphisms (SNPs; rs8053360, rs3751723 and rs12445085) and one nonsynonymous SNP (rs1126960) at the IRX3 locus in 333 junior and senior high school students from a northeast Chinese population. RESULTS We identified significant associations between IRX3 SNPs and birth weight, body mass index (BMI), aspartate aminotransferase (AST), alanine aminotransferase (ALT) and AST/ALT ratio. The rs8053360 CC and rs1126960 GG genotypes were associated with increased birth weight and BMI, especially in females. Individuals with the rs12445085 TT genotype had significantly higher levels of AST and ALT, whereas individuals with the rs1126960 GG genotype had a significantly lower AST/ALT ratio than did individuals with other genotypes. However, no significant relationships were found between any of the IRX3 SNPs and metabolic syndrome or diabetes. CONCLUSIONS IRX3 genetic variants associate with birth weight, BMI and AST/ALT-related transaminase metabolism, supporting the role of IRX3 as an obesity-associated susceptibility gene.
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Affiliation(s)
- C Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - C Chu
- Department of Applied Psychology, Humanities and Management Colleges, Guangdong Medical University, Guangdong, China
| | - J Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - D Wu
- No. 2 Department of Rheumatology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - D Xu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - P Li
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Y Chen
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - B Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - L Pei
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - L Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - S Liu
- Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - T Qi
- Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - X-Y Lou
- Biostatistics Program, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.,Arkansas Children's Research Institute, Little Rock, AR, USA
| | - L Li
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
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16
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Yang X, Yao C, Tian T, Li X, Yan H, Wu J, Li H, Pei L, Liu D, Tian Q, Zhu LQ, Lu Y. A novel mechanism of memory loss in Alzheimer's disease mice via the degeneration of entorhinal-CA1 synapses. Mol Psychiatry 2018; 23:199-210. [PMID: 27671476 PMCID: PMC5794875 DOI: 10.1038/mp.2016.151] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/16/2016] [Accepted: 07/13/2016] [Indexed: 12/13/2022]
Abstract
The entorhinal cortex (EC) is one of the most vulnerable brain regions that is attacked during the early stage of Alzheimer's disease (AD). Here, we report that the synaptic terminals of pyramidal neurons in the EC layer II (ECIIPN) directly innervate CA1 parvalbumin (PV) neurons (CA1PV) and are selectively degenerated in AD mice, which exhibit amyloid-β plaques similar to those observed in AD patients. A loss of ECIIPN-CA1PV synapses disables the excitatory and inhibitory balance in the CA1 circuit and impairs spatial learning and memory. Optogenetic activation of ECIIPN using a theta burst paradigm rescues ECIIPN-CA1PV synaptic defects and intercepts the decline in spatial learning and memory. These data reveal a novel mechanism of memory loss in AD mice via the selective degeneration of the ECIIPN-CA1PV pathway.
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Affiliation(s)
- X Yang
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - C Yao
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - T Tian
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - X Li
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - H Yan
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - J Wu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - H Li
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - L Pei
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China,Department of Neurobiology, Tongji School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - D Liu
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China,Department of Genetics, Tongji School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - Q Tian
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China,Department of Pathophysiology, Tongji School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - L-Q Zhu
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China,Department of Pathophysiology, Tongji School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China,Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. E-mail: or
| | - Y Lu
- Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China,Department of Physiology, School of Basic Medicine and Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China. E-mail: or
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17
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Tuo QZ, Lei P, Jackman KA, Li XL, Xiong H, Li XL, Liuyang ZY, Roisman L, Zhang ST, Ayton S, Wang Q, Crouch PJ, Ganio K, Wang XC, Pei L, Adlard PA, Lu YM, Cappai R, Wang JZ, Liu R, Bush AI. Tau-mediated iron export prevents ferroptotic damage after ischemic stroke. Mol Psychiatry 2017; 22:1520-1530. [PMID: 28886009 DOI: 10.1038/mp.2017.171] [Citation(s) in RCA: 406] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/20/2017] [Accepted: 07/06/2017] [Indexed: 02/05/2023]
Abstract
Functional failure of tau contributes to age-dependent, iron-mediated neurotoxicity, and as iron accumulates in ischemic stroke tissue, we hypothesized that tau failure may exaggerate ischemia-reperfusion-related toxicity. Indeed, unilateral, transient middle cerebral artery occlusion (MCAO) suppressed hemispheric tau and increased iron levels in young (3-month-old) mice and rats. Wild-type mice were protected by iron-targeted interventions: ceruloplasmin and amyloid precursor protein ectodomain, as well as ferroptosis inhibitors. At this age, tau-knockout mice did not express elevated brain iron and were protected against hemispheric reperfusion injury following MCAO, indicating that tau suppression may prevent ferroptosis. However, the accelerated age-dependent brain iron accumulation that occurs in tau-knockout mice at 12 months of age negated the protective benefit of tau suppression against MCAO-induced focal cerebral ischemia-reperfusion injury. The protective benefit of tau knockout was revived in older mice by iron-targeting interventions. These findings introduce tau-iron interaction as a pleiotropic modulator of ferroptosis and ischemic stroke outcome.
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Affiliation(s)
- Q-Z Tuo
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia.,Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - P Lei
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia.,Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - K A Jackman
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - X-L Li
- Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - H Xiong
- Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - X-L Li
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia.,Department of Neurology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Z-Y Liuyang
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - L Roisman
- Department of Pathology, The University of Melbourne, Melbourne, VIC, Australia
| | - S-T Zhang
- Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - S Ayton
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Q Wang
- Department of Neurology and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Sichuan, China
| | - P J Crouch
- Department of Pathology, The University of Melbourne, Melbourne, VIC, Australia
| | - K Ganio
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - X-C Wang
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - L Pei
- Department of Neurobiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Hubei, China
| | - P A Adlard
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Y-M Lu
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Cappai
- Department of Pathology, The University of Melbourne, Melbourne, VIC, Australia
| | - J-Z Wang
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Liu
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - A I Bush
- Oxidation Biology Unit, Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
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18
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Liu J, Wang Q, Qian SY, Xu WM, Li LL, Ning LM, Ren XX, Lyu F, Cheng YB, Gao LJ, Liu CF, Xu W, Pei L, Lu GP, Chen WM. [Nasal continuous positive airway pressure ventilation in children with community-acquired pneumonia under five years of age: a prospective, multi-center clinical study]. Zhonghua Er Ke Za Zhi 2017; 55:329-333. [PMID: 28482381 DOI: 10.3760/cma.j.issn.0578-1310.2017.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To analyze the clinical characteristics of community-acquired pneumonia (CAP) in children under five years of age and analyze the safety and efficiency of nasal continuous positive airway pressure (NCPAP) ventilation for CAP in this population. Method: This was a prospective multicenter study. Children who were admitted to these six centers with CAP and met the NCPAP ventilation indications, aged from 29 d to 5 years, were continuously included during November 2013 to October 2015. The baseline data were collected and NCPAP ventilation were then followed up by operation standards, and the vital signs and arterial blood gas change at special time points were observed and recorded. Any side effect associated with NCPAP were recorded. For categorical variables, comparisons were performed using Fisher test. Rank-sum test and t test were performed respectively for abnormal and normal distribution continuous variables. The variables pre-NCPAP and post-NCPAP were analyzed by repeated measures ANOVA analysis. Result: Totally 145 children were included, and 13 children were excluded due to incomplete data. One hundred and two children(77.3%)were ≤12 months; 91 children (68.9%) were from rural area. NCPAP ventilation was effective in 123 children, with a response rate of 93.2%, were all discharged with a better condition; it was ineffective in 9 children(6.8%), and they were all intubated and went on mechanical ventilation, 5 were discharged with a better condition, and 4 died after gaving up treatment. The gender, age, body weight, residence, main symptoms, main signs, imaging diagnosis, medications, partial pressure of oxygen(PaO(2)), breath and heart rate before NCPAP treatment of two groups had no significant differences(allP>0.05). The rates of combining underlying diseases, trouble with feeding and cyanosis, and the partial pressure of carbon dioxide(PaCO(2) ) before NCPAP ventilation were higher in NCPAP ineffective group ((59±11 )vs.( 49±11) mmHg, 1 mmHg=0.133 kPa, t=-2.597, P=0.028); while the PaO(2)/fraction of inspiration O(2) (FiO(2) ) before NCPAP was lower((150±37) vs. (207±63) mmHg, t=2.697, P=0.008). The breathing, heart rate and PaCO(2) of NCPAP effective group decreased significantly, while the PaO(2) and PaO(2)/FiO(2) increased significantly after 2, 8, 24 h of NCPAP ventilation(all P=0.000). PaCO(2) in children with hypercapnia before NCPAP ventilation in NCPAP effective group decreased significantly ((48±9), (47±12), (45±11)vs.(58±7)mmHg, all P=0.000). All children tolerated well to NCPAP ventilation, and there were no severe side effects or complications associated with NCPAP ventilation. Conclusion: NCPAP ventilation is safe and effectively improved the oxygenation and hypercapnia in infants with CAP. But it may not work well in children with underlying diseases, manifest as difficulty in feeding/cyanosis and extremely high PaCO(2) or low PaO(2)/FiO(2), and they may need early intubation.
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Affiliation(s)
- J Liu
- Pediatric Intensive Care Unit, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing 100045, China
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Gu F, Noonepalle SK, Lee EJ, Choi JH, Shull AY, Pei L, Sreekumar A, Ambs S, Shi H. Abstract P6-02-08: Modulation of indoleamine 2, 3-dioxygenase (IDO1) expression in breast cancer cells by activated CD8+ T cells is controlled by DNA promoter methylation. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-02-08] [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
Tumor infiltrating lymphocytes (TILs) play a critical role in regulating the immunomodulatory properties of triple negative breast cancer (TNBC). However, the specific adaptations that TNBC tumors undergo when challenged by lymphocyte infiltration remain unclear. In order to address this gap in knowledge, we conducted an immuno-phenotype comparison using mRNA sequencing between the TNBC cell line MDA-MB-231 and the luminal breast cancer cell line MCF7 after both were co-cultured with activated human T-cells. Although the cytokine-induced immune signature of the two cell lines were similar, MDA-MD-231 cells were able to transcribe the tryptophan catabolizing enzyme IDO1 at a significantly higher level than MCF7 cells. Stimulation with IFNg was able to differentially induce IDO protein expression and enzymatic activity in ER- cell lines compared to ER+ cell lines, though no differences were observed in upstream JAK/STAT1 signaling or IDO1 mRNA stability between the two cell lines. Further experiments showed that treatment with the demethylating agent 5-aza-deoxycytidine was able to reverse suppression of IDO1 expression in MCF7 cells, suggesting that DNA methylation serves as a potential determinant in IDO1 induction. Analysis of TCGA and other previously published breast cancer datasets revealed subtype-specific mRNA and promoter methylation differences in IDO1, with TNBC/basal-like subtypes exhibiting lower promoter methylation and higher mRNA expression than ER+/luminal subtypes. Bisulfite pyrosequencing validated the subtype-specific association of decreased promoter methylation with increased IDO1 expression in breast cancer cell lines and an independent cohort of primary breast tumors. In addition, decreased IDO1 promoter methylation and elevated IDO1 expression in basal-like breast tumors was found to be associated with increased levels of kynurenine, the metabolic product of IDO1, as well as higher numbers of CD8+ TILs. Furthermore, high kynurenine levels in breast tumors were associated with worse patient survival. Taken together, these findings suggest that subtype-specific IDO1 promoter methylation regulates the ability of breast tumors to escape from antitumor immune responses driven by CD8+ TILs and could be used as a predictive biomarker for IDO inhibitor-based immunotherapy.
Citation Format: Gu F, Noonepalle SK, Lee E-J, Choi J-H, Shull AY, Pei L, Sreekumar A, Ambs S, Shi H. Modulation of indoleamine 2, 3-dioxygenase (IDO1) expression in breast cancer cells by activated CD8+ T cells is controlled by DNA promoter methylation [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-02-08.
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Affiliation(s)
- F Gu
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - SK Noonepalle
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - E-J Lee
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - J-H Choi
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - AY Shull
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - L Pei
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - A Sreekumar
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - S Ambs
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
| | - H Shi
- Baylor College of Medicine, Houston, TX; Georgia Regents University Cancer Center, Augusta, GA; Georgia Regents University, Augusta, GA
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Chen Y, Du W, Shen G, Zhuo S, Zhu X, Shen H, Huang Y, Su S, Lin N, Pei L, Zheng X, Wu J, Duan Y, Wang X, Liu W, Wong M, Tao S. Household air pollution and personal exposure to nitrated and oxygenated polycyclic aromatics (PAHs) in rural households: Influence of household cooking energies. Indoor Air 2017; 27:169-178. [PMID: 27008622 DOI: 10.1111/ina.12300] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 03/15/2016] [Indexed: 05/22/2023]
Abstract
Residential solid fuels are widely consumed in rural China, contributing to severe household air pollution for many products of incomplete combustion, such as polycyclic aromatic hydrocarbons (PAHs) and their polar derivatives. In this study, concentrations of nitrated and oxygenated PAH derivatives (nPAHs and oPAHs) for household and personal air were measured and analyzed for influencing factors like smoking and cooking energy type. Concentrations of nPAHs and oPAHs in kitchens were higher than those in living rooms and in outdoor air. Exposure levels measured by personal samplers were lower than levels in indoor air, but higher than outdoor air levels. With increasing molecular weight, individual compounds tended to be more commonly partitioned to particulate matter (PM); moreover, higher molecular weight nPAHs and oPAHs were preferentially found in finer particles, suggesting a potential for increased health risks. Smoking behavior raised the concentrations of nPAHs and oPAHs in personal air significantly. People who cooked food also had higher personal exposures. Cooking and smoking have a significant interaction effect on personal exposure. Concentrations in kitchens and personal exposure to nPAHs and oPAHs for households using wood and peat were significantly higher than for those using electricity and liquid petroleum gas (LPG).
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Affiliation(s)
- Y Chen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - W Du
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - G Shen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - S Zhuo
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - X Zhu
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - H Shen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Y Huang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - S Su
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - N Lin
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - L Pei
- Institute of Population Research, Peking University, Beijing, China
| | - X Zheng
- Institute of Population Research, Peking University, Beijing, China
| | - J Wu
- Institute of Population Research, Peking University, Beijing, China
| | - Y Duan
- College of Resources and Environment, Shanxi Agricultural University, Shanxi, China
| | - X Wang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - W Liu
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - M Wong
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, Hong Kong Institute of Education, Hong Kong, China
| | - S Tao
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
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Wong CS, Richards ES, Pei L, Sereti I. Immune reconstitution inflammatory syndrome in HIV infection: taking the bad with the good. Oral Dis 2016; 23:822-827. [PMID: 27801977 DOI: 10.1111/odi.12606] [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: 09/26/2016] [Revised: 10/19/2016] [Accepted: 10/20/2016] [Indexed: 12/27/2022]
Abstract
In this review, we will describe the immunopathogies of immune reconstitution inflammatory syndrome, IRIS. IRIS occurs in a small subset of HIV patient, initiating combination antiretroviral therapy (ART), where immune reconstitution becomes dysregulated, resulting in an overly robust antigen-specific inflammatory reaction. We will discuss IRIS in terms of the associated coinfections: mycobacteria, cryptococci, and viruses.
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Affiliation(s)
- C-S Wong
- HIV Pathogenesis Section, Laboratory of Immunoregulation, NIAID/NIH, Bethesda, MD, USA
| | - E S Richards
- HIV Pathogenesis Section, Laboratory of Immunoregulation, NIAID/NIH, Bethesda, MD, USA
| | - L Pei
- HIV Pathogenesis Section, Laboratory of Immunoregulation, NIAID/NIH, Bethesda, MD, USA
| | - I Sereti
- HIV Pathogenesis Section, Laboratory of Immunoregulation, NIAID/NIH, Bethesda, MD, USA
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Chen Y, Shen G, Huang Y, Zhang Y, Han Y, Wang R, Shen H, Su S, Lin N, Zhu D, Pei L, Zheng X, Wu J, Wang X, Liu W, Wong M, Tao S. Household air pollution and personal exposure risk of polycyclic aromatic hydrocarbons among rural residents in Shanxi, China. Indoor Air 2016; 26:246-258. [PMID: 25808453 DOI: 10.1111/ina.12204] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 01/13/2015] [Accepted: 03/16/2015] [Indexed: 06/04/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a group of pollutants of widespread concerns. Gaseous and size-segregated particulate-phase PAHs were collected in indoor and outdoor air in rural households. Personal exposure was measured and compared to the ingestion exposure. The average concentrations of 28 parent PAHs and benzo(a)pyrene (BaP) were 9000 ± 8390 and 131 ± 236 ng/m(3) for kitchen, 2590 ± 2270 and 43 ± 95 ng/m(3) for living room, and 2800 ± 3890 and 1.6 ± 0.7 ng/m(3) for outdoor air, respectively. The mass percent of high molecular weight (HMW) compounds with 5-6 rings contributed 1.3% to total 28 parent PAHs. Relatively higher fractions of HMW PAHs were found in indoor air compared to outdoor air. Majorities of particle-bound PAHs were found in the finest PM0.25 , and the highest levels of fine PM0.25 -bound PAHs were in the kitchen using peat and wood as energy sources. The 24-h personal PAH exposure concentration was 2100 ± 1300 ng/m(3) . Considering energies, exposures to those using wood were the highest. The PAH inhalation exposure comprised up to about 30% in total PAH exposure through food ingestion and inhalation, and the population attributable fraction (PAF) for lung cancer in the region was 0.85%. The risks for inhaled and ingested intakes of PAHs were 1.0 × 10(-5) and 1.1 × 10(-5) , respectively.
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Affiliation(s)
- Y Chen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - G Shen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
- Jiangsu Provincial Laboratory of Environmental Engineering, Jiangsu Academy of Environmental Sciences, Nanjing, China
| | - Y Huang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Y Zhang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - Y Han
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - R Wang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - H Shen
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - S Su
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - N Lin
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - D Zhu
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - L Pei
- Institute of Population Research, Peking University, Beijing, China
| | - X Zheng
- Institute of Population Research, Peking University, Beijing, China
| | - J Wu
- Institute of Population Research, Peking University, Beijing, China
| | - X Wang
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - W Liu
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
| | - M Wong
- Consortium on Health, Environment, Education and Research (CHEER), Department of Science and Environmental Studies, Hong Kong Institute of Education, Hong Kong, China
| | - S Tao
- Laboratory of Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing, China
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Mateos MV, Oriol A, Martínez-López J, Teruel AI, Bengoechea E, Palomera L, de Arriba F, Esseltine DL, Cakana A, Pei L, van de Velde H, San Miguel J. Matched-pairs analysis of outcomes with bortezomib, melphalan, and prednisone (VMP) treatment for previously untreated multiple myeloma (MM) using long-term follow-up data from the phase 3 VISTA and PETHEMA/GEM05 trials. Clinical Lymphoma Myeloma and Leukemia 2015. [DOI: 10.1016/j.clml.2015.07.224] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cao HJ, Yu DM, Zhang TZ, Zhou J, Chen KY, Ge J, Pei L. Protective effect of penehyclidine hydrochloride on lipopolysaccharide-induced acute kidney injury in rat. Genet Mol Res 2015; 14:9334-42. [PMID: 26345867 DOI: 10.4238/2015.august.10.14] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We aimed to observe the effect of penehyclidine hydrochloride (PHC) on lipopolysaccharide (LPS)-induced acute kidney injury in rats and expression of tight junction proteins ZO-1 and occludin. Adult male Sprague-Dawley (SD) rats were divided randomly (N = 10) into control group (C), LPS group (LPS), low-dose PHC group (L-PHC), and high-dose PHC group (H-PHC). All rats, except C group, received a vena caudalis injection of 5.0 mg/kg LPS; after 30 min, rats in L-PHC and H-PHC groups received a vena caudalis injection of 0.3 and 0.9 mg/kg PHC. After 24 h, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, serum creatinine (Scr), and blood urea nitrogen (BUN) were detected. Histopathological changes and expression of ZO-1 and occludin were observed in renal tissues. Versus levels of TNF-α (38.5 ± 9.0), IL-1β (46.3 ± 12.7), Scr (37.2 ± 9.3), and BUN (6.5 ± 1.1) in control group, those in LPS group, TNF-α (159.0 ± 21.3), IL-1β (130.8 ± 18.7), Scr (98.5 ± 18.2), and BUN (12.8 ± 1.8), increased obviously (P < 0.05), with significantly structural changes and decreases of ZO-1 and occludin. However, TNF-α (111.3 ± 11.6), IL-1β (78.4 ± 14.3), Scr (51.3 ± 12.5), BUN (8.1 ± 1.2) in H-PHC group, and TNF-α (120.8 ± 14.3), IL-1β (92.5 ± 19.0), Scr (56.7 ± 14.7), BUN (9.7 ± 1.6) in L-PHC group were obviously decreased (P < 0.05). PHC has protective effects on acute kidney injury in sepsis, including abatement of renal tissue inflammation and functional improvement, potentially by upregulating ZO-1 and occludin.
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Affiliation(s)
- H J Cao
- Department of Anesthesiology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - D M Yu
- Department of Anesthesiology, The General Hospital of Shenyang Military Region, Shenyang, Liaoning Province, China
| | - T Z Zhang
- Department of Anesthesiology, The General Hospital of Shenyang Military Region, Shenyang, Liaoning Province, China
| | - J Zhou
- Department of Anesthesiology, The General Hospital of Shenyang Military Region, Shenyang, Liaoning Province, China
| | - K Y Chen
- Department of Anesthesiology, The General Hospital of Shenyang Military Region, Shenyang, Liaoning Province, China
| | - J Ge
- Department of Gynecology and Obstetrics, The General Hospital of Shenyang Military Region, Shenyang, Liaoning Province, China
| | - L Pei
- Department of Anesthesiology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
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Li C, Zeng L, Dibley MJ, Wang D, Pei L, Yan H. Evaluation of socio-economic inequalities in the use of maternal health services in rural western China. Public Health 2015; 129:1251-7. [PMID: 26256911 DOI: 10.1016/j.puhe.2015.07.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 02/10/2015] [Accepted: 07/03/2015] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To describe the use of maternal health services according to the standards of the Chinese Ministry of Health, and assess socio-economic inequalities in usage in rural Shaanxi province, western China. STUDY DESIGN Cross-sectional survey. METHODS Principal components analysis was used to measure the economic status of households. A concentration index (CI) approach was used as a measure of socio-economic inequalities in the use of maternal health services, and a decomposable CI was used to identify the factors that contributed to the socio-economic inequalities in usage. RESULTS In total, 4760 women who had given birth in the preceding three years were selected at random to be interviewed in the five counties. Household wealth index was calculated by constructing a linear index from asset ownership indicators using principal components analysis to derive weights. The CI approach is a standard measure in the analysis of inequalities in health. If the CI for the use of maternal health services is positive, it is pro-rich; if it is negative, it is pro-poor. The decomposition method was used to estimate the contributions of individual factors to CI. The overall CI for five or more prenatal visits was 0.075. The household wealth index was found to make the greatest contribution to socio-economic inequalities for five or more prenatal visits (35.5%), followed by maternal education (28.8%), receipt of a health handbook during pregnancy (12.1%), age group (11.0%), distance from health facility (10.5%), family members (1.5%) and district of residence (0.6%). CONCLUSIONS Socio-economic inequalities in the use of prenatal health services were pro-rich in rural western China. Socio-economic inequalities in hospital delivery and postnatal health check-ups were not evident. Improving household economic status, providing prenatal health services for women with low income and low educational level, providing health handbooks and improving traffic conditions should be promoted as methods to eliminate socio-economic inequalities in the use of maternal health services.
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Affiliation(s)
- C Li
- Department of Epidemiology and Health Statistics, Xi'an Jiaotong University Health Science Centre, Xi'an, PR China
| | - L Zeng
- Department of Epidemiology and Health Statistics, Xi'an Jiaotong University Health Science Centre, Xi'an, PR China
| | - M J Dibley
- School of Public Health, University of Sydney, NSW, Australia
| | - D Wang
- Department of Clinical Sciences, Liverpool School of Tropical Medicine Pembroke Place, Liverpool, UK
| | - L Pei
- Department of Epidemiology and Health Statistics, Xi'an Jiaotong University Health Science Centre, Xi'an, PR China
| | - H Yan
- Department of Epidemiology and Health Statistics, Xi'an Jiaotong University Health Science Centre, Xi'an, PR China.
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Edelson R, Gelbord JM, Horne K, McHardy IM, Peterson BM, Arévalo P, Breeveld AA, Rosa GD, Evans PA, Goad MR, Kriss GA, Brandt WN, Gehrels N, Grupe D, Kennea JA, Kochanek CS, Nousek JA, Papadakis I, Siegel M, Starkey D, Uttley P, Vaughan S, Young S, Barth AJ, Bentz MC, Brewer BJ, Crenshaw DM, Dalla Bontà E, Cáceres ADL, Denney KD, Dietrich M, Ely J, Fausnaugh MM, Grier CJ, Hall PB, Kaastra J, Kelly BC, Korista KT, Lira P, Mathur S, Netzer H, Pancoast A, Pei L, Pogge RW, Schimoia JS, Treu T, Vestergaard M, Villforth C, Yan H, Zu Y. SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II.SWIFTANDHSTREVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/806/1/129] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rosa GD, Peterson BM, Ely J, Kriss GA, Crenshaw DM, Horne K, Korista KT, Netzer H, Pogge RW, Arévalo P, Barth AJ, Bentz MC, Brandt WN, Breeveld AA, Brewer BJ, Dalla Bontà E, Lorenzo-Cáceres AD, Denney KD, Dietrich M, Edelson R, Evans PA, Fausnaugh MM, Gehrels N, Gelbord JM, Goad MR, Grier CJ, Grupe D, Hall PB, Kaastra J, Kelly BC, Kennea JA, Kochanek CS, Lira P, Mathur S, McHardy IM, Nousek JA, Pancoast A, Papadakis I, Pei L, Schimoia JS, Siegel M, Starkey D, Treu T, Uttley P, Vaughan S, Vestergaard M, Villforth C, Yan H, Young S, Zu Y. SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ONHUBBLE SPACE TELESCOPE. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/806/1/128] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Li H, Ye R, Pei L, Ren A, Zheng X, Liu J. Caesarean delivery, caesarean delivery on maternal request and childhood overweight: a Chinese birth cohort study of 181 380 children. Pediatr Obes 2014; 9:10-6. [PMID: 23512941 DOI: 10.1111/j.2047-6310.2013.00151.x] [Citation(s) in RCA: 52] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Revised: 01/26/2013] [Accepted: 02/02/2013] [Indexed: 11/28/2022]
Abstract
UNLABELLED What is already known about this subject Both rates of caesarean section and childhood overweight have been steadily increasing over the past decade in many parts of the world. Caesarean delivery on maternal request contributes remarkably to the rising trend of caesarean births. A few small-scale studies suggest that caesarean section may be associated with later overweight and obesity, whereas little is known about the impact of caesarean delivery on maternal request. What this study adds Caesarean section is associated with an increased risk of childhood overweight. Children born by caesarean delivery on maternal request are also more likely to be overweight. The strength of the caesarean-overweight association is modest. OBJECTIVES To assess the impact of caesarean delivery including non-medically indicated maternal request caesarean delivery on childhood overweight. METHODS We conducted a prospective investigation of a Chinese birth cohort involving 181 380 children, who were born during 1993-1996 to mothers registered in a perinatal care surveillance system and whose weight and height were measured in 2000. Information on delivery mode and covariates was obtained from the surveillance system. Overweight was defined according to the International Obesity Task Force body mass index (BMI) cutoffs. Multivariable logistic regression was used to estimate adjusted odds ratios. Stratified analyses were done to test whether the association between caesarean section and overweight persisted across subgroups. RESULTS The adjusted odds ratio of overweight for children born by caesarean compared with vaginal delivery was 1.13 [95% confidence interval {CI}: 1.08, 1.18]. The association persisted in subgroups stratified by gender, maternal education, maternal BMI, weight gain during pregnancy and child birthweight (all P values for interaction test ≥0.30). The adjusted odds ratio of overweight for children born by non-medically indicated caesarean delivery compared with vaginal delivery was 1.18 (95% CI: 1.00, 1.41). CONCLUSION Caesarean delivery including non-medically indicated maternal request caesarean delivery compared with vaginal delivery modestly increases childhood overweight risk.
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Affiliation(s)
- H Li
- Institute of Reproductive and Child Health, Ministry of Health Key Laboratory of Reproductive Health, School of Public Health, Peking University Health Science Center, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing, China
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Zhang GL, Pei L, Yu J, Shang Y, Zhang H, Liu B. Transport properties of nanowires with alternating organosilanylene and oligoethenylene units. Theor Chem Acc 2013. [DOI: 10.1007/s00214-013-1386-0] [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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Abstract
Annexin 1, a glucocorticoid (GC)-inducible protein, can play an important role via formyl peptide receptor like 1 (FPR2/ALX, also known as FPRL1) in inflammatory pain modulation. The aim of this review is to analyze different lines of evidence for the role of ANXA1 with different mechanisms on inflammatory pain and describe the profile of ANXA1 as a potential analgesic. A Medline (PUBMED) search using the terms 'Annexin 1 distribution OR expression, FPR2/ALX distribution OR expression, Annexin 1 AND pain, Annexin 1 AND FPR2/ALX AND pain' was performed. Articles with a publication date up to Nov. 1st, 2012 were included. The antinociception of ANXA1 has been evaluated in diverse pain models. It has been suggested that ANXA1 may exerts its action via: (1) inhibiting vital cytokines involved in pain transmission, (2) inhibiting neutrophil accumulation through preventing transendothelial migration via an interaction with formyl peptide receptors, (3) facilitating tonic opioid release from neutrophil in inflammatory site, (4) interrupting the peripheral nociceptive transmission by suppressing neuronal excitability. In general, ANXA1 is a potential mediator for anti-nociception and the role with its receptor constitute attractive targets for developing anesthesia and analgesic drugs, and their interaction may prove to be a useful strategy to treat inflammatory pain.
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Affiliation(s)
- L Chen
- Department of Neurology of the First People's Hospital of Jingzhou, The first affiliated hospital of Yangtze University, Jingzhou, China
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Xu Z, Pei L, Zhang F, Hu X, Gui Y, Wang L, Wu B. A functional variant in IL12B promoter modulates its expression and associates with increased risk of allergic asthma. Genes Immun 2013; 14:238-43. [PMID: 23575353 DOI: 10.1038/gene.2013.13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The interleukin-12B (IL12B) gene encodes the p40 chain of IL-12, a pro-inflammatory cytokine that antagonizes Th2 phenotype and, hence, may have a critical role in the pathogenesis of allergic asthma. In this report, we describe the identification of a novel IL12B promoter polymorphism (T-to-A exchange) at position -536. The IL12B -536AA genotype was significantly associated with asthma in the Chinese populations (P=0.011, odds ratio=2.227). The risk-associated A allele was linked to reduced expression of IL12B mRNA levels and IL12B production in asthmatic patients. Luciferase reporter assay provided evidence that risk-associated A allele reduced the promoter activity of IL12B gene compared with those of the promoter containing the protective T allele. We further observed that decreasing binding effects between the risk alleles A of IL12B and CCAAT/enhancer binding protein alpha (C/EBPα) through A allele sequence mediated streptavidin-conjugated agarose pulldown and biotin-labelled A allele mediated electrophoretic mobility shift assay. We also observed additive effects of the risk alleles of IL12B and decreased mRNA levels of C/EBPα in asthmatic patients. Therefore, we postulated that the presence of -536A allele in IL12B promoter could predispose to the development of allergic asthma.
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Affiliation(s)
- Z Xu
- Department of Molecular Diagnosis, Shanghai Zhongcheng Translational-medicine Co., Ltd, Shanghai, China.
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Zheng X, Chen R, Li N, Du W, Pei L, Zhang J, Ji Y, Song X, Tan L, Yang R. Socioeconomic status and children with intellectual disability in China. J Intellect Disabil Res 2012; 56:212-220. [PMID: 21917049 DOI: 10.1111/j.1365-2788.2011.01470.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Intellectual disability (ID) accounts for 70% of all disabilities among children in China's Second National Sampling Survey on Disability. Although studies have shown a relationship between social class and ID in children, none have investigated the association of socioeconomic variables in Chinese children with mild or severe ID. METHODS Data for children aged 0-6 years with and without ID were abstracted from the Second National Sampling Survey on Disability in China, conducted in 2006. Crude odds ratios showed the effect of sociodemographic factors on mild and severe ID. Adjusted odds ratios (OR(a) ) (95% confidence intervals) estimated the independent effects of these factors. RESULTS For both mild and severe ID, risk of having ID increased with male sex, birth to a woman aged 35 years and older, lower maternal education, mother's older age at delivery, lower income and rural residence. After age, gender and parent disability were controlled, mothers aged 35 years and older were more likely to have a child with ID: mild ID, OR(a) 1.47 (1.15-1.88); severe ID, OR(a) 1.32 (1.00-1.73). There was an approximate increasing monotonic risk of severe ID with increasing socioeconomic disadvantage: lowest income, OR(a) 3.00 (2.19-4.12); low income, OR(a) 2.28 (1.63-3.19); lower middle income, OR(a) 1.72 (1.27-2.33); middle income, OR(a) 1.73 (1.28-2.36). CONCLUSIONS There is a significant relationship between sociodemographic factors and ID. Similar patterns were found for both mild and severe ID. Recommendations are given for preventing ID in Chinese children.
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Affiliation(s)
- X Zheng
- Institute of Population Research/WHO Collaborating Center for Reproductive Health and Population Science, Chinese Center of Disability and Development, Peking University, Beijing, China.
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Su TF, Zhao YQ, Zhang LH, Peng M, Wu CH, Pei L, Tian B, Zhang J, Shi J, Pan HL, Li M. Electroacupuncture reduces the expression of proinflammatory cytokines in inflamed skin tissues through activation of cannabinoid CB2 receptors. Eur J Pain 2011; 16:624-35. [DOI: 10.1002/j.1532-2149.2011.00055.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2011] [Indexed: 01/19/2023]
Affiliation(s)
- T.-F. Su
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - Y.-Q. Zhao
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - L.-H. Zhang
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - M. Peng
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - C.-H. Wu
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - L. Pei
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - B. Tian
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - J. Zhang
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - J. Shi
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - H.-L. Pan
- Department of Anesthesiology and Perioperative Medicine; The University of Texas MD Anderson Cancer; Houston; TX; 77030; USA
| | - M. Li
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
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Pei L, Zhang J, Zhao F, Su T, Wei H, Tian J, Li M, Shi J. Annexin 1 exerts anti-nociceptive effects after peripheral inflammatory pain through formyl-peptide-receptor-like 1 in rat dorsal root ganglion. Br J Anaesth 2011; 107:948-58. [PMID: 21990306 DOI: 10.1093/bja/aer299] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Annexin 1 (ANXA1) has analgesic effects in inflammatory pain. We aimed to investigate the anti-nociceptive role of ANXA1, at the dorsal root ganglion (DRG) level, through an interaction with formyl-peptide-receptor-like 1 (FPR2/ALX). METHODS Inflammatory pain was evoked by injecting complete Freund's adjuvant (CFA, 50 μl) into the hindpaw of male Sprague-Dawley rats. The distribution of ANXA1 and FPR2/ALX in L4/5 DRGs was evaluated by immunofluorescence. The expression of ANXA1 was measured by western blot. The involvement of FPR2/ALX in the anti-nociception of ANXA1 was investigated by thermal (irradiant heat) and mechanical (von Frey filament) pain tests with intrathecal (i.t.) ANXA1-derived peptide (Anxa1(2-26)), FPR2/ALX agonist 5(S)-6(R)-7-trihydroxyheptanoic-acid-methyl-ester (BML-111), and antagonist N-t-Boc-Phe-Leu-Phe-Leu-Phe (Boc1). RESULTS ANXA1 and FPR2/ALX localized in the satellite glial cells and neurones in L4/5 DRGs. CFA treatment (n=20) increased ANXA1 expression in L4/5 DRGs within 7 days (P<0.01). I.T. Anxa1(2-26) (20 and 100 µg µl(-1)) and BML-111 (10 and 100 nmol) reduced CFA-induced thermal and mechanical nociception within 48 h (n=40) (P<0.05). However, i.t. Boc1 10 µg intensified inflammatory pain (P<0.05) and reversed the anti-nociceptive effect of Anxa1(2-26) (n=25) (P<0.05). Moreover, ANXA1 expression increased in L4/5 DRGs after i.t. Anxa1(2-26) (20 µg µl(-1)) (P<0.05) and BML-111 (10 nmol) (P<0.01) but decreased after i.t. Boc1 (10 and 100 µg) alone (P<0.01) or Boc1 (10 µg) co-injection with Anxa1(2-26) (20 µg µl(-1)) (P<0.05). CONCLUSIONS Endogenous ANXA1 expression at the DRG level is involved in CFA-induced inflammatory pain, and i.t. ANXA1 20 µg µl(-1) produces its anti-nociceptive effect through FPR2/ALX.
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Affiliation(s)
- L Pei
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, PR China
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Li J, Ning T, Pei L, Peng W, Jia N, Zhou Q, Wen X. Photonic generation of triangular waveform signals by using a dual-parallel Mach-Zehnder modulator. Opt Lett 2011; 36:3828-3830. [PMID: 21964111 DOI: 10.1364/ol.36.003828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A photonic approach to generate triangular waveform signals is proposed and analyzed. With active bias control, two sub-MZMs (MZ-a and MZ-b) of a dual-parallel Mach-Zehnder modulator (DP-MZM) operate at minimum transmission point, leaving the main MZM (MZ-c) at quadrature transmission point. Triangular waveform can be observed by a parameter setting of modulation index. The proposal is first analyzed and then validated by simulation. The key significance of the scheme is that it is capable of generating triangular waveform signals via a sinusoid local oscillator.
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Affiliation(s)
- J Li
- Key Lab of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing, 100044, China
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Ye H, Huang G, Pei L, Zeng P, Luo X. Efficacy of sequential treatment protocol with highly purified urinary FSH and recombinant FSH for controlled ovarian stimulation. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li HT, Ye R, Achenbach TM, Ren A, Pei L, Zheng X, Liu JM. Caesarean delivery on maternal request and childhood psychopathology: a retrospective cohort study in China. BJOG 2010; 118:42-8. [PMID: 21050366 DOI: 10.1111/j.1471-0528.2010.02762.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To prospectively examine the association between mode of delivery and childhood psychopathology. DESIGN Retrospective cohort study. SETTING Eighteen counties and three cities in China. POPULATION A total of 4190 preschool children whose mothers were registered in a perinatal surveillance programme were assessed with the Child Behaviour Checklist (CBCL), an instrument to assess child emotional (internalising) and behavioural (externalising) problems. METHODS Differences in CBCL problem scores were analysed both quantitatively and categorically among children born by caesarean delivery on maternal request (CDMR), assisted vaginal delivery (AVD), and spontaneous vaginal delivery (SVD). MAIN OUTCOME MEASURES The CBCL total, externalising, and internalising scores. RESULTS There were significant differences in the mean scores of total (20.9, 23.0, and 25.0), externalising (7.6, 8.4, and 9.1), and internalising (4.7, 5.2, and 5.6) problems among children born by CDMR, SVD, and AVD, after adjusting for potential confounding factors (P = 0.007, 0.014, and 0.031). Children born by AVD were more likely than those born by SVD to have total (OR 1.43; 95% CI 1.10-1.86), externalising (OR 1.46; 95% CI 1.11-1.92), and internalising (OR 1.41; 95% CI 1.08-1.84) scores in the highest quartile, whereas children born by CDMR were less likely to have externalising scores in the highest quartile (OR 0.64; 95% CI 0.42-0.97). Furthermore, there were significant increasing linear trends on all problem scores, and in the odds of being in the highest quartile, from children born by CDMR to those born by SVD and AVD. CONCLUSION The likelihood of childhood psychopathological problems may be the lowest in children born by CDMR, followed by those born by SVD, whereas the highest probability was observed in those born by AVD.
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Affiliation(s)
- H-T Li
- Department of Epidemiology, Institute of Reproductive and Child Health, Peking University Health Science Center, Beijing, China
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He H, Emmett MR, Marshall AG, Ji Y, Conrad CA, Priebe W, Colman H, Lang FF, Madden TL, Kristoffersen K, Stockhausen MT, Poulsen HS, Binder ZA, Orr B, Lim M, Weingart JD, Brem H, Olivi A, Riggins GJ, Gallia GL, Litofsky NS, Miller DC, Rath P, Anthony DC, Feng Q, Franklin C, Pei L, Free A, Kirk MD, Shi H, Timmer M, Theiss H, Juerchott K, Ries C, Paron I, Franz W, Selbig J, Guo K, Tonn JC, Schichor C, Zhou YH, Hu Y, Pioli PD, Rajneesh K, Limoli CL, Yu L, Hess KR, Linskey ME, Faber F, Guo K, Jaeger D, Thorsteinsdottir J, Albrecht V, Tonn JC, Schichor C, Price R, Song J, Zimmerman P, Duale H, Rivera A, Kaur B, Parada L, Cook C, Chiocca EA, Kwon CH, Munoz DM, Guha A, Estrada-Bernal A, Van Brocklyn JR, Gu C, Mahasenan KV, Joshi K, Gupta S, Mattson A, Li C, Nakano I, Chi AS, Rheinbay E, Wakimoto H, Gillespie S, Kasif S, Rabkin SD, Martuza RL, Bernstein BE, Skirboll SL, Wurdak H, Zhu S, Romero A, Lorger M, Watson J, Chiang CY, Zhang J, Natu VS, Lairson LL, Walker JR, Trussell CM, Harsh GR, Vogel H, Felding-Habermann B, Orth AP, Miraglia LJ, Rines DR, Schultz PG, Hide T, Takezaki T, Nakamura H, Makino K, Kuratsu JI, Kondo T, Yao J, Kim YW, Koul D, Almeida JS, Weinstein JN, Alfred Yung WK, Joshi K, Miyazaki T, Chaudhury AR, Nakano I, Wong AJ, Del Vecchio C, Mitra S, Han SY, Holgado-Madruga M, Gupta P, Golebiewska A, Brons NH, Bjerkvig R, Niclou SP, Ramm P, Vollmann-Zwerenz A, Beier C, Aigner L, Bogdahn U, Kalbitzer HR, Hau P, Sanzey M, Golebiewska A, Vallar L, Niclou SP, Tamura K, Aoyagi M, Ando N, Ogishima T, Wakimoto H, Yamamoto M, Ohno K, Perin A, Fung KH, Longatti P, Guiot MC, Del Maestro RF, Rossi S, Stechishin O, Weiss S, Stifani S, Goodman L, Gao F, Gumin J, Ezhilarasan R, Love P, George A, Colman H, Lang F, Aldape K, Sulman EP, Soeda A, Lee DH, Shaffrey ME, Oldfield EH, Park DM, Dietrich J, Han R, Noble M, Yang MY, Liu X, Madhankumar AB, Sheehan J, Slagle-Webb B, Connor JR, Fu J, Shen RJ, Colman H, Lang FF, Alfred Yung WK, Koul D, Kaluzova M, Machaidze R, Nduom ENK, Burden CT, Hadjipanayis CG, Lei L, Sonabend A, Guarnieri P, Ludwig T, Rosenfeld S, Bruce J, Canoll P, Vaillant BD, Bhat K, Balasubramaniyam V, Wang S, Gumin J, Sulman E, Lang F, Aldape K, Colman H, Sulman EP, Ezhilarasan R, Goodman LD, Love PN, George A, Aldape K, Soules M, Zhu T, Flack C, Talsma C, Hamm L, Muraszko K, Fan X, Aoyagi M, Matsuoka Y, Tamura K, Ando N, Kawano Y, Ohno K, Kobayashi D, Kumagai J, Frank RT, Najbauer J, Aboody KS, Aboody KS, Najbauer J, Metz M, Garcia E, Aramburo S, Valenzuela V, Gutova M, Annala AJ, Barish M, Danks M, Kim SU, Portnow J, Hofstetter C, Gursel D, Mubita L, Holland E, Boockvar J, Monje M, Freret M, Masek M, Edwards MS, Fisher PG, Vogel H, Beachy P. Stem Cells. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ye X, Li Y, Stawicki S, Couto S, Eastham-Anderson J, Kallop D, Weimer R, Wu Y, Pei L. An anti-Axl monoclonal antibody attenuates xenograft tumor growth and enhances the effect of multiple anticancer therapies. Oncogene 2010; 29:5254-64. [PMID: 20603615 DOI: 10.1038/onc.2010.268] [Citation(s) in RCA: 169] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Axl is expressed in various types of cancer and is involved in multiple processes of tumorigenesis, including promoting tumor cell growth, migration, invasion, metastasis as well as angiogenesis. To evaluate further the mechanisms involved in the expression/activation of Axl in various aspects of tumorigenesis, especially its roles in modulating tumor stromal functions, we have developed a phage-derived mAb (YW327.6S2) that recognizes both human and murine Axl. YW327.6S2 binds to both human and murine Axl with high affinity. It blocks the ligand Gas6 binding to the receptor, downregulates receptor expression, inhibits receptor activation and downstream signaling. In A549 non-small-cell lung cancer (NSCLC) and MDA-MB-231 breast cancer models, YW327.6S2 attenuates xenograft tumor growth and potentiates the effect of anti-VEGF treatment. In NSCLC models, YW327.6S2 also enhances the effect of erlotinib and chemotherapy in reducing tumor growth. Furthermore, YW327.6S2 reduces the metastasis of MDA-MB-231 breast cancer cells to distant organs. YW327.6S2 induces tumor cell apoptosis in NSCLC, reduces tumor-associated vascular density and inhibits the secretion of inflammatory cytokines and chemokines from tumor-associated macrophages in the breast cancer model. In conclusion, anti-Axl mAb can enhance the therapeutic efficacy of anti-VEGF, EGFR small-molecule inhibitors as well as chemotherapy. Axl mAb affects not only tumor cells but also tumor stroma through its modulation of tumor-associated vasculature and immune cell functions.
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Affiliation(s)
- X Ye
- Department of Molecular Oncology, Genentech Inc., South San Francisco, CA 94080, USA
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Ye H, Zeng P, Pei L, Huang G. IVF/ICSI outcomes between cycles with luteal estradiol (E2) pre-treatment before GnRH antagonist protocol and standard long GnRH agonist protocol: a prospective and randomized study. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.1464] [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: 10/21/2022]
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Hyun S, Pei L, Molinari JF, Robbins MO. Finite-element analysis of contact between elastic self-affine surfaces. Phys Rev E Stat Nonlin Soft Matter Phys 2004; 70:026117. [PMID: 15447555 DOI: 10.1103/physreve.70.026117] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2004] [Indexed: 05/24/2023]
Abstract
Finite-element methods are used to study nonadhesive, frictionless contact between elastic solids with self-affine surfaces. We find that the total contact area rises linearly with the load at small loads. The mean pressure in the contact regions is independent of load and proportional to the root-mean-square slope of the surface. The constant of proportionality is nearly independent of the Poisson ratio and roughness exponent and lies between previous analytic predictions. The contact morphology is also analyzed. Connected contact regions have a fractal area and perimeter. The probability of finding a cluster of area a(c) drops as a(-tau )(c ) where tau increases with a decrease in roughness exponent. The distribution of pressures shows an exponential tail that is also found in many jammed systems. These results are contrasted to simpler models and experiments.
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Affiliation(s)
- S Hyun
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
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43
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Pei L. Transcriptional repressor of vasoactive intestinal peptide receptor mediates repression through interactions with TFIIB and TFIIEbeta. Biochem J 2001; 360:633-8. [PMID: 11736653 PMCID: PMC1222266 DOI: 10.1042/0264-6021:3600633] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The transcriptional repressor for rat vasoactive-intestinal-polypeptide receptor 1 (VIPR-RP) is a recently characterized transcription factor that belongs to a family of proteins, which include components of the DNA replication factor C complex. In this study, I investigated the mechanisms by which VIPR-RP represses transcription. I show here that transcriptional repression by VIPR-RP is mediated by a histone deacetylase-independent mechanism. I provide evidence that VIPR-RP makes direct physical contacts with two proteins of the basal transcription apparatus, the transcription factors TFIIB and TFIIEbeta. The interaction with TFIIB is mediated by the N-terminal 180 amino acids, whereas the interactive domain with TFIIEbeta is located between residues 367 and 527 of VIPR-RP. Using gel mobility-shift assays I demonstrated that interaction between VIPR-RP and TFIIB prevents the recruitment of TFIIB into a DNA-TATA-box-binding protein complex. My results indicate that VIPR-RP mediates transcriptional repression through direct interactions with the general transcription machinery.
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Affiliation(s)
- L Pei
- Division of Endocrinology & Metabolism, Cedars-Sinai Research Institute-UCLA School of Medicine, 8700 Beverly Boulevard, Los Angeles, CA 90048, U.S.A.
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Abstract
Inhibin is an important modulator of reproductive function at both the endocrine level, through its regulation of pituitary FSH biosynthesis, and at the paracrine and autocrine levels, as an intragonadal regulatory factor. To investigate the in vivo actions of inhibin in FSH regulation and gonadal function, transgenic mice that overexpress the rat inhibin alpha-subunit gene were generated. A transgene that includes the mouse metallothionein-I gene promoter (MT-alpha) fused to the rat inhibin alpha-subunit precursor coding sequences was used to produce three lines of transgenic mice. Transgene mRNA is expressed in numerous tissues, including the pituitary, liver, testis, ovary, and kidney. Inhibin alpha-subunit protein was also increased in transgenic pituitary and ovary. Serum inhibin alpha-subunit levels are highly increased compared with control mice. Inhibin beta(A)- and beta(B)-subunit protein amounts are lower in transgenic ovaries compared with wild type, although serum levels of activin A are not significantly reduced in transgenic female mice. FSH levels are reduced in both male and female transgenic mice, whereas LH levels are increased in MT-alpha female mice. MT-alpha transgenic females are subfertile and exhibit a 52% reduction in litter size compared with wild-type females. The smaller litter size of MT-alpha female mice was correlated with a reduction in the number of oocytes ovulated during a normal cycle. Treatment of the transgenic females with exogenous gonadotropins resulted in an ovulation rate similar to that of stimulated wild-type animals, suggesting that altered gonadotropin levels may be responsible for the decreased ovulation rates. MT-alpha transgenic male mice are fertile and sire litters of equivalent size to those sired by wild-type males, despite an approximately 50% reduction in sperm numbers. These results indicate that overexpression of the rat inhibin alpha-subunit gene in mice leads to a disruption of the normal inhibin-to-activin ratio and to reproductive deficiencies, and they support the hypothesis that inhibin and activin act to regulate FSH secretion in vivo and are essential for normal gonadal function.
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Affiliation(s)
- B N Cho
- Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, Illinois 60208, USA
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Abstract
Previous work has implicated the nuclear receptors liver X receptor alpha (LXR alpha) and LXR beta in the regulation of macrophage gene expression in response to oxidized lipids. Macrophage lipid loading leads to ligand activation of LXRs and to induction of a pathway for cholesterol efflux involving the LXR target genes ABCA1 and apoE. We demonstrate here that autoregulation of the LXR alpha gene is an important component of this lipid-inducible efflux pathway in human macrophages. Oxidized low-density lipoprotein, oxysterols, and synthetic LXR ligands induce expression of LXR alpha mRNA in human monocyte-derived macrophages and human macrophage cell lines but not in murine peritoneal macrophages or cell lines. This is in contrast to peroxisome proliferator-activated receptor gamma (PPAR gamma)-specific ligands, which stimulate LXR alpha expression in both human and murine macrophages. We further demonstrate that LXR and PPAR gamma ligands cooperate to induce LXR alpha expression in human but not murine macrophages. Analysis of the human LXR alpha promoter led to the identification of multiple LXR response elements. Interestingly, the previously identified PPAR response element (PPRE) in the murine LXR alpha gene is not conserved in humans; however, a different PPRE is present in the human LXR 5'-flanking region. These results have implications for cholesterol metabolism in human macrophages and its potential to be regulated by synthetic LXR and/or PPAR gamma ligands. The ability of LXR alpha to regulate its own promoter is likely to be an integral part of the macrophage physiologic response to lipid loading.
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Affiliation(s)
- B A Laffitte
- Howard Hughes Medical Institute, University of California, Los Angeles, 90095-1662, USA
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Pei L, Flock JI. Lack of fbe, the gene for a fibrinogen-binding protein from Staphylococcus epidermidis, reduces its adherence to fibrinogen coated surfaces. Microb Pathog 2001; 31:185-93. [PMID: 11562171 DOI: 10.1006/mpat.2001.0462] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [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: 02/03/2023]
Abstract
The significance of Fbe, a fibrinogen-binding protein in Staphylococcus epidermidis, was investigated. A fbe mutant was constructed by allelic replacement, where a Gentamicin resistance gene replaced a portion of the A region of fbe. Adherence assay to immobilized fibrinogen on polyethylene surfaces and peripheral venous catheters from patients showed that the fibrinogen binding ability of the mutant was reduced compared to its parental strain. This shows that Fbe is a major factor involved in adherence of S. epidermidis to fibrinogen. No difference was found between the wild-type and mutant in their affinity to immobilized fibronectin.
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Affiliation(s)
- L Pei
- Division of Clinical Bacteriology, Department of Immunology, Pathology and Microbiology, Stockholm, S-141 86, Sweden
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Abstract
Cerebral ischemia results in activation of the mitogen-activated protein kinase pathway and increased tyrosine phosphorylation of proteins associated with postsynaptic densities (PSDs). The authors investigated the possible relation between these events by determining the effect of ischemia on tyrosine phosphorylation of the brain-specific, PSD-enriched, Ras-GTPase activating protein, SynGAP. Transient (15 minutes) global ischemia was produced in rats by 4-vessel occlusion and PSDs prepared from forebrains immediately after ischemia or at 20 minutes, 1 hour, or 24 hours of reperfusion. Tyrosine phosphorylation of SynGAP was elevated relative to sham-operated controls by 20 minutes of reperfusion and remained elevated for at least 24 hours. Tyrosine phosphorylation of SynGAP also increased in CA1 and CA3/DG subfields of the hippocampus. Enhanced tyrosine phosphorylation of SynGAP was not accompanied by a change in PSD RasGAP activity. SynGAP bound to the SH2 domains of Src and Fyn in a tyrosine phosphorylation-dependent fashion, and this interaction increased after ischemia. SynGAP binds to the PDZ domains of PSD-95/SAP90 and coimmunoprecipitated with PSD-95. The coimmunoprecipitation of SynGAP with PSD-95 decreased after ischemia. The results indicate that changes in the properties and interactions of SynGAP may be involved in the neuropathology of ischemia.
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Affiliation(s)
- L Pei
- Center for the Neurobiology of Stress, Division of Life Sciences, University of Toronto at Scarborough, Ontario, Canada
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Pei L, Flock JI. Functional study of antibodies against a fibrogenin-binding protein in Staphylococcus epidermidis adherence to polyethylene catheters. J Infect Dis 2001; 184:52-5. [PMID: 11398109 DOI: 10.1086/321003] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [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: 01/16/2001] [Revised: 03/26/2001] [Indexed: 11/03/2022] Open
Abstract
Staphylococcus epidermidis is an important pathogen in foreign body-associated infections. In a previous study, we showed that a surface-located fibrinogen-binding protein, termed Fbe, from S. epidermidis mediated the bacterial adherence to fibrinogen-coated surfaces in vitro. In the present study, we demonstrate that antibodies against Fbe can block adherence of S. epidermidis to fibrinogen-coated catheters, subcutaneously implanted catheters from rats, and peripheral venous catheters from human patients.
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Affiliation(s)
- L Pei
- Division of Clinical Bacteriology, Department of Immunology, Pathology, and Microbiology, Huddinge University Hospital, Karolinska Institute, Stockholm, Sweden.
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Ye H, Huang G, Pei L. [A prospective, randomized controlled study comparing the effects of gonadotropin-releasing hormone agonist long and short protocols for in vitro fertilization]. Zhonghua Fu Chan Ke Za Zhi 2001; 36:222-5. [PMID: 11783366] [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: 02/23/2023]
Abstract
OBJECTIVE To compare the effects of gonadotropin-releasing hormone agonist (GnRH-a) long and short protocols as part of in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) treatment. METHODS One hundred and nine infertile couples accepted a prospective, randomized comparative study for IVF or ICSI treatment were divided into GnRH-a long protocol group (55 cases) and GnRH-a short protocol group (54 cases). GnRH-a long protocol group: GnRH-a was taken by nasal spray 0.9 mg/day starting on day 21 of the previous menstrual cycle. Once the patient was down regulated, gonadotropin (Gn) injection was started. GnRH-a short protocol group: GnRH-a was taken by nasal spray 0.45 mg/day starting on day 2 of the menstrual cycle, and Gn was started on the same day. Two groups had human chorionic gonadotrophin (hCG) administered when the leading follicle was at least 18 mm in diameter. Oocytes were retrieved 36 hours after hCG administration guided by transvaginal ultrasounography. IVF/ICSI were performed as routine. RESULTS Serum follicle stimulating hormone and luteinizing hormone (LH) levels on the day of starting Gn were lower in the long protocol group comparing with the short protocol group [(4.4 +/- 1.2) IU/L Vs (6.3 +/- 1.7) IU/L, (2.7 +/- 1.5) IU/L Vs (4.4 +/- 2.8) IU/L, P < 0.01 respectively]. The levels of serum estradiol (E2), LH and E2 per oocyte on the day of hCG injection were lower in the long protocol group comparing with the short protocol group [(7,119 +/- 3,584) pmol/L Vs (9,523 +/- 3,587) pmol/L, (1.0 +/- 1.0) IU/L Vs (4.0 +/- 3.4) IU/L, (610 +/- 315) pmol/L Vs (935 +/- 450) pmol/L, P < 0.01 respectively]. Patients treated with short protocol were stimulated for a shorter period, required fewer Gn ampoules than the long protocol group [(10.1 +/- 1.5) d Vs (11.1 +/- 1.2) d, (23.4 +/- 8.7) Amps Vs (28.0 +/- 8.6) Amps, P < 0.01 respectly]. There are no statistically differences between the two groups in the numbers of oocytes retrieved, metaphase of second meiosis oocytes, fertilized oocytes, cleaved embryos, high quality embryos and pregnancy rates. CONCLUSIONS The GnRH-a long and short protocols have equal effects on controlled ovarian hyperstimulation for in vitro fertilization. Patients who received GnRH-a short protocol required fewer ampoules of gonadotrpins and shorter period of treatment than those who received the GnRH-a long protocol.
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Affiliation(s)
- H Ye
- Institute of Reproductive and Genetics, Chongqing Obstetrics and Gynecology Hospital, Changqing 400013, China
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Abstract
Pituitary tumor-transforming gene (PTTG) encodes a protein implicated in cellular transformation and transcriptional regulation. To identify downstream target genes, I established cell lines with tightly regulated inducible expression of PTTG. DNA arrays were used to analyze gene expression profiles after PTTG induction. I identified c-myc oncogene as a major PTTG target. Induction of PTTG resulted in increased cell proliferation through activation of c-myc. I showed that PTTG activates c-myc transcription in transfected cells. PTTG binds to c-myc promoter near the transcription initiation site in a protein complex containing the upstream stimulatory factor (USF1). I have defined the PTTG DNA-binding site and mapped PTTG DNA binding domain to a region between amino acids 61 and 118. Furthermore, I demonstrated that PTTG DNA binding is required for its transcriptional activation function. These results definitively established the role of PTTG as a transcription activator and indicate that PTTG is involved in cellular transformation and tumorigenesis through activation of c-myc oncogene.
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Affiliation(s)
- L Pei
- Division of Endocrinology and Metabolism, Cedars-Sinai Research Institute, UCLA School of Medicine, Los Angeles, California 90048, USA.
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