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Quan Y, Duan M. Emission reductions, industrial competitiveness, and spillover effects under China's regional emission trading systems: Evidence from the iron and steel sector. J Environ Manage 2023; 344:118481. [PMID: 37364493 DOI: 10.1016/j.jenvman.2023.118481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 06/28/2023]
Abstract
An emission trading system (ETS) has been consistently recognized as a promising instrument to stem massive carbon emissions from energy-intensive industries. However, it remains ambiguous whether the ETS can achieve emission mitigation without undermining economic activity in specific industries in emerging running markets. This study focuses on the impact of China's four independent ETS pilots on carbon emissions, industrial competitiveness, and spatial spillover effects in the iron and steel industry. With a synthetic control method for causal inference, we find that the achievement of emission reductions was generally accompanied by losses of competitiveness in the pilot regions. An exception to this trend was seen in the Guangdong pilot, where the aggregate emissions increased due to the incentivized output created by a specific benchmarking allocation approach. Despite impaired competitiveness, the ETS did not cause significant spatial spillovers, which alleviates concerns about potential carbon leakage under unilateral climate regulation. Our findings could enlighten subsequent sector-specific assessments of the effectiveness of ETSs and are also valuable to policymakers in and outside China now considering ETSs.
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Affiliation(s)
- Yifei Quan
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing, 100084, China
| | - Maosheng Duan
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing, 100084, China; China Three Gorges Corporation Joint Research Center for Climate Governance Mechanism and Green Low-carbon Transformation Strategy, Tsinghua University, Beijing, 100084, China.
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2
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Liu B, Gao F, Zhao H, Yuan S, Peng X, Zhang P, Wang J, Zhang T, Duan M, Guo Y. Discovery of YK-029A, a novel mutant EGFR inhibitor targeting both T790 M and exon 20 insertion mutations, as a treatment for NSCLC. Eur J Med Chem 2023; 258:115590. [PMID: 37406381 DOI: 10.1016/j.ejmech.2023.115590] [Citation(s) in RCA: 1] [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: 03/21/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/07/2023]
Abstract
Although traditional EGFR-TKIs have advanced the treatment landscape of NSCLC with sensitive driver mutations (del19 or L858R), some NSCLC patients with EGFR exon 20 insertion mutations have been left with few effective therapies. The development of novel TKIs is still in progress. Herein, we describe the structure-guided design of a novel selective and orally bioavailable inhibitor, YK-029A, which could overcome both the T790 M mutations and exon 20 insertion of EGFR. YK-029A inhibited EGFR signaling, suppressed sensitive mutations and ex20ins of EGFR-driven cell proliferation, and was largely effective with oral administration in vivo. Furthermore, YK-029A exhibited significant antitumor activity in EGFRex20ins-driven patients-derived xenograft (PDX) models, preventing tumor progression or causing tumor regression at well-tolerated dosages. Based on the outcomes of preclinical efficacy and safety studies, YK-029A will enter phase Ⅲ clinical trials for the treatment of EGFRex20ins NSCLC.
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Affiliation(s)
- Bin Liu
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China.
| | - Feng Gao
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Hui Zhao
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Shuai Yuan
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Xingzhe Peng
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Pengzhi Zhang
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Jing Wang
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China
| | - Tongmei Zhang
- Yuekang Biomedicines Co., Ltd, Room 601, Nanyang Building, Esplanade Avenue 81, Haikou, Hainan province, China
| | - Maosheng Duan
- Yuekang Biomedicines Co., Ltd, Room 601, Nanyang Building, Esplanade Avenue 81, Haikou, Hainan province, China.
| | - Yongqi Guo
- Puhe Biopharma, Wu Song Jiang Avenue 1-1-19, Guo Xiang Street, Soochow, Jiangsu province, China.
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Liu S, Xing L, Zhang J, Wang K, Duan M, Wei M, Zhang B, Chang Z, Zhang H, Shang P. Expression pattern of CRYAB and CTGF genes in two pig breeds at different altitudes. ARQ BRAS MED VET ZOO 2022. [DOI: 10.1590/1678-4162-12403] [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: 11/21/2022] Open
Abstract
ABSTRACT Tibetan pigs are characterized by significant phenotypic differences relative to lowland pigs. Our previous study demonstrated that the genes CRYAB and CTGF were differentially expressed in heart tissues between Tibetan (highland breed) and Yorkshire (lowland breed) pigs, indicating that they might participate in hypoxia adaptation. CRYAB (ɑB-crystallin) and CTGF (connective tissue growth factor) have also been reported to be associated with lung development. However, the expression patterns of CRYAB and CTGF in lung tissues at different altitudes and their genetic characterization are not well understood. In this study, qRT-PCR and western blot of lung tissue revealed higher CRYAB expression levels in highland and middle-highland Tibetan and Yorkshire pigs than in their lowland counterparts. With an increase in altitude, the expression level of CTGF increased in Tibetan pigs, whereas it decreased in Yorkshire pigs. Furthermore, two novel single-nucleotide polymorphism were identified in the 5′ flanking region of CRYAB (g.39644482C>T and g.39644132T>C) and CTGF (g.31671748A>G and g.31671773T>G). The polymorphism may partially contribute to the differences in expression levels between groups at the same altitude. These findings provide novel insights into the high-altitude hypoxia adaptations of Tibetan pigs.
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Affiliation(s)
- S. Liu
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - L. Xing
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - J. Zhang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - K. Wang
- Henan Agricultural University, People’s Republic of China
| | - M. Duan
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - M. Wei
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - B. Zhang
- China Agricultural University, People’s Republic of China
| | - Z. Chang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China
| | - H. Zhang
- China Agricultural University, People’s Republic of China
| | - P. Shang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
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Yin G, Li B, Fedorova N, Hidalgo-Gonzalez P, Kammen DM, Duan M. Orderly retire China's coal-fired power capacity via capacity payments to support renewable energy expansion. iScience 2021; 24:103287. [PMID: 34778728 PMCID: PMC8577126 DOI: 10.1016/j.isci.2021.103287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/08/2021] [Accepted: 10/13/2021] [Indexed: 12/04/2022] Open
Abstract
The energy-only-market implemented in China cannot strongly support large-scale renewable energy expansion because the renewable energy expansion may disorderly phase out non-renewable power capacity. However, non-renewable power capacity, particularly the coal-fired power capacity in China, can provide vital power system adequacy needed by renewable energy expansion. We introduce capacity payments to orderly retire current coal-fired power capacity by transforming some of it into reserve capacity in order to support renewable energy expansion. Using generation and transmission expansion results from the SWITCH-China model, this paper proposes an orderly retirement path based on the assumption of implementing capacity payments. Our results show that roughly 100–200 gigawatts (GW) of coal-fired power capacity can continue to serve through 2050, and most of it is used as reserve capacity. Capacity payments of 400–700 billion yuan are needed to achieve this retirement path, and a higher adequacy requirement needs higher payments. Renewable energy integration brings contradictory effects to the power system Decarbonization of China's power system is a multi-objective decision-making process Coal-fired capacity can support renewable energy expansion through capacity payments
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Affiliation(s)
- Guangzhi Yin
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing 100084, China.,Renewable and Appropriate Energy Laboratory, Energy and Resources Group, University of California, Berkeley, CA 74720, USA
| | - Bo Li
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China.,Renewable and Appropriate Energy Laboratory, Energy and Resources Group, University of California, Berkeley, CA 74720, USA
| | - Natalie Fedorova
- Renewable and Appropriate Energy Laboratory, Energy and Resources Group, University of California, Berkeley, CA 74720, USA
| | - Patricia Hidalgo-Gonzalez
- Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA.,Renewable and Appropriate Energy Laboratory, Energy and Resources Group, University of California, Berkeley, CA 74720, USA
| | - Daniel M Kammen
- Renewable and Appropriate Energy Laboratory, Energy and Resources Group, University of California, Berkeley, CA 74720, USA.,Goldman School of Public Policy, University of California, Berkeley, CA 74720, USA
| | - Maosheng Duan
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing 100084, China
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Zhang J, Zhang S, Wu R, Duan M, Zhang D, Wu Y, Hao J. The new CORSIA baseline has limited motivation to promote the green recovery of global aviation. Environ Pollut 2021; 289:117833. [PMID: 34332166 DOI: 10.1016/j.envpol.2021.117833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/02/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) is the first programme to tackle carbon dioxide (CO2) emissions from a single industry at the global level, to realize the carbon-neutral growth of international flights from 2020 onwards. However, the COVID-19 pandemic has caused a drastic decline in the global aviation industry. The International Civil Aviation Organization (ICAO) has adjusted the CORSIA by removing 2020 emissions from the baseline, which now will only be based on 2019 emissions. We estimate that the total carbon dioxide (CO2) emissions from global international flights decreased by 70 % from February to July 2020 compared to those in 2019. Our analysis suggests that the annual CO2 emissions from international flights during the pilot stage of CORSIA (2021-2023) will be far below the revised baseline even if the global aviation industry could embrace an optimistic recovery. The major airline companies will have very limited motivations due to the CORSIA scheme to implement mitigation actions proactively. Therefore, more progressive actions are needed to align the industry recovery of global aviation and climate change mitigation during the post-COVID-19 period.
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Affiliation(s)
- Jingran Zhang
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, PR China
| | - Shaojun Zhang
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, PR China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, PR China; Beijing Laboratory of Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Ruoxi Wu
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, PR China
| | - Maosheng Duan
- Institute of Energy, Environment, and Economy, Tsinghua University, Beijing, 100084, PR China
| | - Da Zhang
- Institute of Energy, Environment, and Economy, Tsinghua University, Beijing, 100084, PR China
| | - Ye Wu
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, PR China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, PR China; Beijing Laboratory of Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing, 100084, China
| | - Jiming Hao
- School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing, 100084, PR China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, PR China; Beijing Laboratory of Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing, 100084, China
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Zhu Y, Duan M, Dijk HH, Freriks RD, Dekker LH, Mierau JO. Socio-economic disparities in self-reported, tested, and diagnosed COVID-19 status. Eur J Public Health 2021. [PMCID: PMC8574667 DOI: 10.1093/eurpub/ckab164.883] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Backgrounds
Studies in clinical settings showed a potential relationship between Socio-Economic Status (SES) and lifestyle factors with COVID-19, but it is still unknown whether this holds in the general population. In this study we investigated the associations of SES with self-reported, tested, and diagnosed COVID-19 status in the general population.
Methods
Participants were 49,474 men and women (46 ± 12 yrs) residing in the Northern Netherlands from the Lifelines cohort study. SES indicators and lifestyle factors (i.e., smoking status, physical activity, alcohol intake, diet quality, sleep time, and TV watching time) were assessed by questionnaire from the Lifelines Biobank. Self-reported, tested, and diagnosed COVID-19 status were obtained from the Lifelines COVID-19 questionnaire.
Results
There were 4,711 participants who self-reported having had a COVID-19 infection, 2,883 participants tested for COVID-19, and 123 positive cases diagnosed in this study population. After adjustment for age, sex, lifestyle factors, BMI, and ethnicity, we found that participants with low education or low income were less likely to self-report a COVID-19 infection (OR [95%CI]: low education 0.78 [0.71-0.86]; low income 0.86 [0.79-0.93]), and be tested for COVID-19 (OR [95%CI]: low education 0.58 [0.52-0.66]; low income 0.86 [0.78-0.95]) compared with high education or high income groups, respectively.
Conclusions
Our findings suggest that the low SES group was the most vulnerable population to COVID-19 infection and self-reported and tested COVID-19 status in the general population was better predicted by SES than by lifestyle factors.
Key messages
This study innovatively included a broader range of COVID-19 status, including self-reported and tested COVID-19 status, to better understand COVID-19 related socio-economic factors. This study added evidence to the socio-economically patterned COVID-19 status in a general population instead of in clinical settings.
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Affiliation(s)
- Y Zhu
- Internal Medicine, UMCG, Groningen, Netherlands
| | - M Duan
- Internal Medicine, UMCG, Groningen, Netherlands
| | - HH Dijk
- Economics and Business, University of Groningen, Groningen, Netherlands
| | - RD Freriks
- Economics and Business, University of Groningen, Groningen, Netherlands
| | - LH Dekker
- Internal Medicine, UMCG, Groningen, Netherlands
- Aletta Jacobs School of Public Health, University of Groningen, Groningen, Netherlands
| | - JO Mierau
- Economics and Business, University of Groningen, Groningen, Netherlands
- Aletta Jacobs School of Public Health, University of Groningen, Groningen, Netherlands
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Li Y, Cao L, Guo Z, Gu LL, Duan M, Wu EH, Gong JF, Zhu WM. [Characteristics and predictors of postoperative outcome of Crohn disease patients requiring abdominal surgery: a series of 1 048 cases from a single inflammatory bowel disease centre]. Zhonghua Wai Ke Za Zhi 2021; 59:40-45. [PMID: 33412632 DOI: 10.3760/cma.j.cn112139-20200304-00185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the clinical characteristics, the potential relative factors for postoperative abdominal septic complications, and prognosis factors of surgical recurrence of Crohn disease (CD) patients after the first surgery. Methods: All the CD patients from Department of General Surgery, Jinling Hospital, Medical School of Nanjing University who had undergone at least one abdominal surgery from January 2007 to December 2017 were included for retrospective analysis. Hospital records were reviewed for information on clinical characteristics. Relative factors of postoperative abdominal septic complications were accessed by Logistic regression models, and prognosis factors of surgical recurrence were accessed by Cox proportional hazards regression models. Results: There were 1 048 patients included (733 males and 315 females), accounting for 1 513 operations. The age was 31(17) years and the length of resected small bowel was 30.0(40.0) cm at the first resection, 20.0(35.0) cm at the second resection, and 20.0(23.5) cm at the third resection. The length of resected small bowel was 25.0(40.0) cm at any resection. At the first abdominal surgery, 70.99%(744/1 048) patients were aged between 17 and 40 years, 66.98%(702/1 048) patients had ileocolonic disease, and 60.40%(633/1 048) patients had penetrating behavior. Penetrating behavior (OR=8.594, 95%CI: 3.397 to 21.740, P<0.01) and current smoking status (OR=2.671, 95%CI: 1.044 to 6.832, P=0.040) were significantly associated with an increased risk of postoperative septic complications, whereas staged operation (OR=0.360, 95%CI: 0.184 to 0.707, P=0.003) was associated with a decreased risk. Male gender (HR=1.500, 95%CI: 1.128 to 1.995, P=0.005), upper gastrointestinal disease (HR=1.526, 95%CI: 1.033 to 2.255, P=0.034), penetrating behavior (HR=1.506, 95%CI: 1.132 to 2.003, P=0.005) and emergency surgery (HR=1.812, 95%CI: 1.375 to 2.387, P<0.01) were significantly associated with an increased risk of postoperative surgical recurrence, whereas staged operation (HR=0.361, 95%CI: 0.227 to 0.574, P<0.01) was significantly associated with a decreased risk. Conclusions: In this cohort of CD patients receiving abdominal surgery from an inflammatory bowel disease center, the median age was 31 years and the median length of resected small bowel was 30 cm, at first resection. Patients who have risk factors of adverse postoperative outcome may be benefited from staged surgical approach.
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Affiliation(s)
- Y Li
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - L Cao
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Z Guo
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - L L Gu
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - M Duan
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - E H Wu
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - J F Gong
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - W M Zhu
- Department of General Surgery, General Hospital of Eastern Theater Command, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
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Zhang JF, Ye XL, Duan M, Zhou XL, Yao ZZ, Zhao JX. [Clinical characteristics of elderly and younger onset rheumatoid arthritis]. Zhonghua Yi Xue Za Zhi 2021; 100:3788-3792. [PMID: 33379844 DOI: 10.3760/cma.j.cn112137-20200506-01439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the clinical and laboratory characteristics and therapy methods of elderly onset rheumatoid arthritis (EORA) and younger onset rheumatoid arthritis (YORA). Methods: The clinical, laboratory and therapeutic data of 481 RA patients in the Department of Rheumatology and Immunology in Peking University Third Hospital from January 2013 to December 2018 were collected and used to analyze the difference of characteristics between EORA group and YORA group, which might be useful for better diagnosis and treatment of EORA patients. Quantitative data of normal distribution were compared with t test between the two groups. Results: There were 481 patients in this cohort, of which 137(28.5%) were EORA, 344(71.5%) were YORA, with a mean age of (59±14) years (19-87 years). There were 358 females (74.4%) and 123 males (25.6%). The percentage of male patients was obviously higher in EORA group (36.5% vs 21.2%, χ(2)=12.012, P<0.01), and the average disease course was obviously shorter (Z=-7.985, P<0.01). Disease Activity Score 28 (DAS28) score was higher in EORA group (5.6±1.3 vs 5.2±1.6, t=2.549, P<0.05), meanwhile the incidences of pleural effusion and interstitial lung disease (ILD) were higher (6.6% vs 1.7%, 29.9% vs 18.3%, respectively; χ(2)=7.550, 7.797, both P<0.05). The incidences of venous thrombosis, primary hypertension, diabetes mellitus, cerebrovascular disease, coronary heart disease (CHD), peripheral atherosclerosis and cataract in EORA group were all significantly higher than those in YORA group (all P<0.05). Erythrocyte sedimentation rate (ESR) and D-Dimer in EORA group were all remarkably higher (both P<0.05). The rate of using glucocorticoid in EORA group was higher but the rate of using methotrexate and anti-tumor necrosis factor-α agents were lower (χ(2)=5.271, 8.407, 9.356, all P<0.05). Conclusion: Compared to YORA group, the percentage of male patients and disease activity of EORA group are higher. The occurrence of pleural effusion, ILD, venous thrombosis, primary hypertension, diabetes mellitus, cerebrovascular disease, CHD, peripheral atherosclerosis and cataract in EORA group are higher than those in YORA group.
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Affiliation(s)
- J F Zhang
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - X L Ye
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - M Duan
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - X L Zhou
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - Z Z Yao
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
| | - J X Zhao
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing 100191, China
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Duan M, Han ZH, Huang T, Yang Y, Huang B. Characterization of gut microbiota and short-chain fatty acid in breastfed infants with or without breast milk jaundice. Lett Appl Microbiol 2020; 72:60-67. [PMID: 32893879 DOI: 10.1111/lam.13382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/15/2020] [Revised: 08/20/2020] [Accepted: 08/22/2020] [Indexed: 12/17/2022]
Abstract
This study aims to investigate the gut microbiota and metabolites in breastfed infants with breast milk jaundice (BMJ) using gut microbiome-metabolomics. Breastfed newborns diagnosed with BMJ and those without BMJ (control group) were enrolled. Faecal samples were collected from the participants and subjected to high-throughput sequencing of the 16s rDNA V3 and V4 regions of the gut flora and metabolomics of short-chain fatty acids (SCFAs). Proteobacteria, Fimicutes and Actinobacteria were the main bacteria at the phylum level. Eshcerichia-Shigella and Enterobacteriacea were the main bacteria at the genus level. The difference between the two groups was compared. Compared to the control group, the amount of Streptococcus was significantly increased while the amount of Enterococcus was significantly decreased in the faeces from infants with BMJ. Functional prediction analysis of 16S found that biosynthesis of penicillin and cephalosporin significantly increased in the BMJ group. Gas chromatography-mass spectrometry detection of SCFAs revealed that levels of acetic acid and propionic acid were significantly lower in the BMJ group than in the control group. The reduced levels of acetic acid and propionic acid may be related to the increase in Streptococcus and decrease in Enterococcus, both of which may contribute to BMJ.
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Affiliation(s)
- M Duan
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University/The First People's Hospital of Zunyi, Zunyi, China
| | - Z H Han
- Department of Emergency, The Third Affiliated Hospital of Zunyi Medical University/The First People's Hospital of Zunyi, Zunyi, China
| | - T Huang
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University/The First People's Hospital of Zunyi, Zunyi, China
| | - Y Yang
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University/The First People's Hospital of Zunyi, Zunyi, China
| | - B Huang
- Department of Pediatrics, The Third Affiliated Hospital of Zunyi Medical University/The First People's Hospital of Zunyi, Zunyi, China
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Duan M, Vinke PC, Navis GJ, Corpeleijn E, Dekker LH. Associations of ultra-processed food and its consumption patterns with incident type 2 diabetes. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.437] [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: 11/13/2022] Open
Abstract
Abstract
Background
To study the associations of the consumption of ultra-processed food (UPF) and its underlying habitual consumption patterns with incident type 2 diabetes (T2D) in a large population-based cohort.
Methods
In 70 421 participants (35-70 years, 58.6% women) from the Lifelines cohort study, dietary intake was assessed with a food frequency questionnaire. Principal component analysis (PCA) was performed to derive UPF consumption patterns. UPF was related to incident diabetes with adjustments for confounders, including overall diet quality.
Results
During a median follow-up of 41 months, the intake of UPF was associated with higher risk of type 2 diabetes (1128 cases, OR for a 10% increment in UPF intake 1.33 [95% CI 1.26, 1.41]), and remained significant after adjustment for confounders. PCA revealed four habitual UPF consumption patterns. A pattern high in cold savory snacks (OR 1.16 [95% CI 1.09, 1.22]) and a pattern high in warm savory snacks (OR 1.15 [95% CI 1.08, 1.21]) were associated with an increased diabetes risk; a pattern high in traditional Dutch cuisine was not associated with diabetes risk (OR 1.05 [95% CI 0.97, 1.14]); while a pattern high in sweet snacks and pastries was inversely associated with diabetes risk (OR 0.82 [95% CI 0.76, 0.89]). There was a clear inverse association between diabetes risk at baseline and the sweet snacks and pastries pattern (β = -0.104 [95% CI -0.113, -0.094]).
Conclusions
A higher consumption of UPF was associated with higher risk of type 2 diabetes. For consumption patterns, this association was most pronounced for the patterns that were high in savory snacks. Our findings emphasize that in addition to promoting the consumption of healthy food products, discouraging the consumption of UPF, specifically savory snacks, should be considered as part of future diabetes prevention strategies.
Key messages
Ultra-processed foods intake was associated with increased risk of type 2 diabetes. Consumption patterns of ultra-processed foods should be the focus for future policies.
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Affiliation(s)
- M Duan
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
| | - P C Vinke
- Epidemiology, University Medical Center Groningen, Groningen, Netherlands
| | - G J Navis
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
| | - E Corpeleijn
- Epidemiology, University Medical Center Groningen, Groningen, Netherlands
| | - L H Dekker
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
- Aletta Jacobs School of Public Health, University of Groningen, Groningen, Netherlands
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11
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Duan M, Dekker LH, Carrero JJ, Navis GJ. Using Structural Equation Modelling to Untangle Pathways of Factors Associated with Type 2 Diabetes. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.592] [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: 11/14/2022] Open
Abstract
Abstract
Background
Risk factors for type 2 diabetes (T2D) are multi-facet and interrelated. We aimed to apply structural equation modelling to examine and quantify pathways of modifiable risk factors related to incident type 2 diabetes.
Methods
Analysis was based on 68 649 participants (35-80 years, without diabetes at baseline) from the Lifelines cohort study. We proposed a conceptual model that illustrates the pathways of risk factors related to incident type 2 diabetes: socio-economic status (income and education) → lifestyle behaviors (diet quality, physical activity, TV watching, and smoking) → clinical markers (blood lipids and obesity status) → incident type 2 diabetes. Structural equation modeling was performed to test this proposed model.
Results
After a median follow-up of 41 months, 1124 new cases of type 2 diabetes were identified. The best-fitting model indicated that among all modifiable risk factors included, waist circumference had the biggest direct effect on type 2 diabetes (β: 0.213 ), followed by HDL-cholesterol (β: -0.141). Less TV watching and more physical activity were found to play an important role in improving clinical markers that were directly associated with type 2 diabetes. Education had the biggest direct effects on all lifestyle behaviors.
Conclusions
Using this innovative approach, our analysis provides a more nuanced assessment of the interplay of type 2 diabetes risk factors, compared to traditional risk estimates. Our results indicated that reducing large waist circumference may be prioritized as the main target for the prevention of type 2 diabetes, and lifestyle interventions are urgently warranted with additional support for those with a low education.
Key messages
Our study elucidated the multiple causal pathways to type 2 diabetes in a prospective setting. Our results identified the most critical targets for future prevention strategies for type 2 diabetes.
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Affiliation(s)
- M Duan
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
| | - L H Dekker
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
- Aletta Jacobs School of Public Health, University of Groningen, Groningen, Netherlands
| | - J J Carrero
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - G J Navis
- Internal Medicine, University Medical Center Groningen, Groningen, Netherlands
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Abstract
Objective: To examine the expression of T-box5 (TBX5) in colorectal cancer tissues and its clinical significance, and explore the effects of TBX5 on the invasion and metastasis of colorectal cancer cells and its mechanism. Methods: The expressions of TBX5 in cancer and adjacent normal tissues were tested by immunohistochemistry (IHC), and the relationship between TBX5 and clinicopathological features and prognosis of colorectal cancer was analyzed. Real-time quantitative PCR (RT-qPCR) and western blot were used to detect the expressions of TBX5 in different colorectal cancer cell lines. TBX5 overexpression plasmid was constructed and transfected into human colorectal cancer cell line HT-29, and cell counting kit-8 (CCK-8) was used to detect the activities of transfection HT-29 cells. Cell scratch test and Transwell assay were used to detect the migration and invasion abilities of cells, while RT-qPCR and western blot were used to detect the mRNA and protein expressions of PCNA, p21, p16, p27, MMP-2, MMP-7 and TIMP-1. Results: The positive rate of TBX5 protein in colorectal cancer tissues was 24.44% (22/90), significantly lower than 65.56% of adjacent normal tissues (P<0.001). The expression of TBX5 was significantly related to lymph node metastasis, depth of invasion and nerve invasion (P<0.05). The survival period of 22 patients with positive TBX5 expression was (60.2±2.4) months, better than (44.3±2.8) months of 68 patients with negative TBX5 expression (P<0.05). Among human colon cancer cell lines of HT29, SW620, SW480, LOVO and HCT116, the expression of TBX5 in HT29 cells was the weakest. After transfection, the expression of TBX5 in transfection group was significantly higher than those in control group and blank group (P=0.043 and P<0.001). Cell viability in transfection group was significantly lower than those in control group and blank group (both P<0.001). The ratio of cells in G(0)/G(1) phase was increased (P=0.009), while in G(2)/M phase was decreased (P<0.001). Cells' abilities of migration and invasion in transfection group were also significantly decreased (both P<0.001). Overexpression of TBX5 downregulated the expressions of PCNA, MMP-2 and MMP-7, while upregulated the expressions of p21, p16, p27 (P<0.05 for all). TBX5 had marginal effect on the expression of TIMP-1 (P>0.05). Conclusions: Downregulation of TBX5 is a marker of poor prognosis in patients with colorectal cancer. TBX5 may inhibit the progression of colorectal cancer by inhibiting proliferation, invasion and metastasis related genes.
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Affiliation(s)
- M J Dong
- Seventh Department of General Surgery, Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Zhou
- Department of Laboratory, Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - M Duan
- Department of Laboratory, Hebei Zhengding County People's Hospital, Zhengding 050800, China
| | - Q M Gao
- Seventh Department of General Surgery, Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - J H Zhao
- Seventh Department of General Surgery, Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
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13
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Duan M, Yang Y, Zheng XH. Meta-analysis of the treatment for neonatal respiratory distress syndrome by INSURE strategy. J BIOL REG HOMEOS AG 2020; 34:1027-1032. [PMID: 32640778 DOI: 10.23812/19-484-l-23] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- M Duan
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University, The First People's Hospital of Zunyi, Zunyi, China
| | - Y Yang
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University, The First People's Hospital of Zunyi, Zunyi, China
| | - X H Zheng
- Department of Neonate, The Third Affiliated Hospital of Zunyi Medical University, The First People's Hospital of Zunyi, Zunyi, China
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14
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Zhang H, Duan M. China's pilot emissions trading schemes and competitiveness: An empirical analysis of the provincial industrial sub-sectors. J Environ Manage 2020; 258:109997. [PMID: 31929047 DOI: 10.1016/j.jenvman.2019.109997] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 04/03/2019] [Revised: 12/11/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
China's economic development has entered a "new normal" stage where economic growth has slowed down. In this context, China's local authorities and industry circles are particularly concerned about the impact of emissions trading scheme (ETS), China's first major market-based approach to control greenhouse gas emissions, on competitiveness. This paper contributes to the thin empirical studies on this issue from the perspective of China's provincial industrial sub-sectors. We divide the industry of each province into 37 sub-sectors and screen the actual industrial sub-sector coverage of China's pilot ETSs. Taking advantage of the rich information of sub-sector characteristics and the longitudinal structure of our dataset over 2005-2015, we use a combination of propensity score matching technique and difference-in-difference models to analyze the impact of China's pilot ETSs on gross industrial output value (GIOV) and employment. Empirical results indicate that China's pilot ETSs have exerted a negative impact on the GIOV, and production cut is still the major approach to achieve carbon emission reductions. We also find China's pilot ETSs have led to a significant decrease in employment of the covered industrial sub-sectors. Several robustness checks confirm our findings. Further, our discussions suggest that in the short term, China's pilot ETSs have not promoted the "decoupling" of carbon emissions and economic outputs in industrial sub-sectors. While achieving carbon emission reductions, the pilot ETSs have failed to avoid a negative impact on competitiveness. Lastly, we suggest that competent authorities should prudently tailor the quota allocation methods according to sectorial conditions and consider setting up compensation measures, and covered enterprises should incorporate low-carbon development concept and address the challenges proactively from the long run.
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Affiliation(s)
- Haijun Zhang
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing, 100084, China; China Carbon Market Research Center, Tsinghua University, Beijing, 100084, China
| | - Maosheng Duan
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing, 100084, China; China Carbon Market Research Center, Tsinghua University, Beijing, 100084, China.
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15
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Li SJ, Wang L, Wang L, Wu B, Zhu L, Hu ZX, Duan M. [A real world study of hepatitis B virus genotypes in patients with chronic hepatitis B with different disease spectrum]. Zhonghua Gan Zang Bing Za Zhi 2020; 27:1001-1004. [PMID: 31941263 DOI: 10.3760/cma.j.issn.1007-3418.2019.12.013] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S J Li
- Department of Hepatology, Public Health Clinical Medical Center of Chengdu, Chengdu 610066, China
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16
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Schneider L, Duan M, Stavins R, Kizzier K, Broekhoff D, Jotzo F, Winkler H, Lazarus M, Howard A, Hood C. Double counting and the Paris Agreement rulebook. Science 2019; 366:180-183. [PMID: 31601755 DOI: 10.1126/science.aay8750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
| | - Maosheng Duan
- Institute of Energy, Environment and Economy, Tsinghua University, Beijing, China.
| | - Robert Stavins
- John F. Kennedy School of Government, Harvard University, Cambridge, MA, USA
| | | | | | - Frank Jotzo
- Crawford School of Public Policy, Australian National University, Canberra, Australia
| | - Harald Winkler
- Energy Research Centre, University of Cape Town, South Africa
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17
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Ukraintseva S, Zhbannikov I, Arbeev K, Duan M, Kulminski A, Akushevich I, Yashin A. EPISTATIC EFFECTS ON AGING TRAITS IN SETS OF GENES SELECTED WITH DIFFERENT BIOLOGICAL ASSUMPTIONS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - K. Arbeev
- Duke University, Durham, North Carolina
| | - M. Duan
- Duke University, Durham, North Carolina
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18
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Zhbannikov I, Arbeev K, Bagley O, Duan M, Yashin A, Ukraintseva S. APPLICATIONS OF GENETIC STOCHASTIC PROCESS MODEL IN STUDIES OF DEVELOPMENT OF ALZHEIMER’S DISEASE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- I.Y. Zhbannikov
- Social Science Research Institute, Duke University, Durham, North Carolina
| | - K. Arbeev
- Social Science Research Institute, Duke University, Durham, North Carolina
| | - O. Bagley
- Social Science Research Institute, Duke University, Durham, North Carolina
| | - M. Duan
- Social Science Research Institute, Duke University, Durham, North Carolina
| | - A.I. Yashin
- Social Science Research Institute, Duke University, Durham, North Carolina
| | - S.V. Ukraintseva
- Social Science Research Institute, Duke University, Durham, North Carolina
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19
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Xie J, Wang H, Liu XX, Duan M, Tang J, Wang YY. Selectivity of a QCM gas sensor modified by ZnSn(OH)6via analysis of adsorption thermodynamics and kinetics. RSC Adv 2017. [DOI: 10.1039/c7ra09101j] [Citation(s) in RCA: 5] [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: 11/21/2022] Open
Abstract
In this paper, a novel analysis approach was employed to achieve the selectivity of a quartz crystal microbalance (QCM) sensor.
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Affiliation(s)
- J. Xie
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
- The Center of New Energy Materials and Technology
| | - H. Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
- The Center of New Energy Materials and Technology
| | - X. X. Liu
- The Center of New Energy Materials and Technology
- School of Materials Science and Engineering
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
| | - M. Duan
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
- College of Chemistry and Chemical Engineering
| | - J. L. Tang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
- College of Chemistry and Chemical Engineering
| | - Y. Y. Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- Southwest Petroleum University (SWPU)
- Chengdu 610500
- China
- College of Chemistry and Chemical Engineering
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20
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Duan M, Steinfort DP, Smallwood D, Hew M, Chen W, Ernst M, Irving LB, Anderson GP, Hibbs ML. CD11b immunophenotyping identifies inflammatory profiles in the mouse and human lungs. Mucosal Immunol 2016; 9:550-63. [PMID: 26422753 PMCID: PMC7101582 DOI: 10.1038/mi.2015.84] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/12/2015] [Indexed: 02/04/2023]
Abstract
The development of easily accessible tools for human immunophenotyping to classify patients into discrete disease endotypes is advancing personalized therapy. However, no systematic approach has been developed for the study of inflammatory lung diseases with often complex and highly heterogeneous disease etiologies. We have devised an internally standardized flow cytometry approach that can identify parallel inflammatory alveolar macrophage phenotypes in both the mouse and human lungs. In mice, lung innate immune cell alterations during endotoxin challenge, influenza virus infection, and in two genetic models of chronic obstructive lung disease could be segregated based on the presence or absence of CD11b alveolar macrophage upregulation and lung eosinophilia. Additionally, heightened alveolar macrophage CD11b expression was a novel feature of acute lung exacerbations in the SHIP-1(-/-) model of chronic obstructive lung disease, and anti-CD11b antibody administration selectively blocked inflammatory CD11b(pos) but not homeostatic CD11b(neg) alveolar macrophages in vivo. The identification of analogous profiles in respiratory disease patients highlights this approach as a translational avenue for lung disease endotyping and suggests that heterogeneous innate immune cell phenotypes are an underappreciated component of the human lung disease microenvironment.
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Affiliation(s)
- M Duan
- grid.1002.30000 0004 1936 7857Department of Immunology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Australia ,grid.1008.90000 0001 2179 088XDepartment of Surgery, University of Melbourne, Melbourne, Australia ,grid.482095.2Ludwig Institute for Cancer Research, Melbourne, Australia ,grid.1018.80000 0001 2342 0938Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Australia
| | - D P Steinfort
- grid.416153.40000 0004 0624 1200Department of Respiratory Medicine, Royal Melbourne Hospital, Parkville, Australia
| | - D Smallwood
- grid.416153.40000 0004 0624 1200Department of Respiratory Medicine, Royal Melbourne Hospital, Parkville, Australia
| | - M Hew
- grid.1623.60000 0004 0432 511XDepartment of Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Parkville, Australia
| | - W Chen
- grid.1018.80000 0001 2342 0938Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Australia
| | - M Ernst
- grid.1042.7The Walter and Eliza Hall Institute for Medical Research, Parkville, Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, University of Melbourne, Melbourne, Australia ,grid.410678.cPresent Address: 10Present address: Olivia Newton-John Cancer Research Institute, Austin Health, Heidelberg, Victoria 3084, Australia., ,
| | - L B Irving
- grid.416153.40000 0004 0624 1200Department of Respiratory Medicine, Royal Melbourne Hospital, Parkville, Australia
| | - G P Anderson
- grid.1008.90000 0001 2179 088XDepartment of Pharmacology, University of Melbourne, Melbourne, Australia
| | - M L Hibbs
- grid.1002.30000 0004 1936 7857Department of Immunology, Monash University, Alfred Medical Research and Education Precinct, Melbourne, Australia
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21
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Huang F, Ahmad W, Duan M, Liu Z, Guan Z, Zhang M, Qiao B, Li Y, Song Y, Song Y, Chen Y, Amjad Ali M. Efficiency of live attenuated and inactivated rabies viruses in prophylactic and post exposure vaccination against the street virus strain. Acta Virol 2015; 59:117-24. [PMID: 26104328 DOI: 10.4149/av_2015_02_117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rabies remains an enigmatic and widely discussed global infectious disease and causes an increasing number of deaths. The currently used highly effective prophylactic and post exposure (p.e.) vaccination depends solely upon inexpensive, effective and safe vaccines to counteract the spread of the disease. In this study, the potential of an attenuated Chinese rabies vaccine (SRV9) strain in prophylactic and p.e. vaccination against the street strain of rabies virus (RV) was evaluated in mice. Prophylactic vaccination consisting of one intramuscular (i.m.) dose of SRV9 protected 100% of mice from intracerebral (i.c.) challenge with a lethal dose of the street virus. The latter was detected in the brain of mice at day 6 post challenge by RT-PCR. Post exposure vaccination was performed at days 1, 2, 3, 4, 5 and 6 post infection (p.i.) with either SRV9 or inactivated rabies vaccine. The survival rates after i.m. inoculation of SRV9 at the indicated days were 70%, 50%, 30%, 20%, 10%, and 0%, respectively; the corresponding survival rates for the inactivated rabies vaccine were 30%, 20%, 10%, 0%, 0%, and 0%, respectively. However, 100%, 90%, 70%, 50%, 20%, 10%, and 10% of mice survived after i.c. inoculation of SRV9 at the indicated days. The increased permeability of the blood-brain barrier and the infiltration of CD19+ B cells into the central nervous system after i.c. inoculation of SRV9 are regarded as prerequisites for the clearance of the street virus. The obtained data suggest that SRV9 is a promising candidate for prophylactic and p.e. vaccination against rabies infection and that it exhibits a potential for the control of rabies in China.
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Zhang H, Yu H, Wang J, Zhang M, Wang X, Ahmad W, Duan M, Guan Z. The BM2 protein of influenza B virus interacts with p53 and inhibits its transcriptional and apoptotic activities. Mol Cell Biochem 2015; 403:187-97. [DOI: 10.1007/s11010-015-2349-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 01/30/2015] [Indexed: 12/14/2022]
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23
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Kazmierski WM, Danehower S, Duan M, Ferris RG, Elitzin V, Minick D, Sharp M, Stewart E, Villeneuve M. Biological and Structural Characterization of Rotamers of C-C Chemokine Receptor Type 5 (CCR5) Inhibitor GSK214096. ACS Med Chem Lett 2014; 5:1296-9. [PMID: 25516787 DOI: 10.1021/ml5004124] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 10/28/2014] [Indexed: 11/28/2022] Open
Abstract
We recently reported the discovery of preclinical CCR5 inhibitor GSK214096, 1 (J. Med. Chem. 2011, 54, 756). Detailed characterization of 1 revealed that it exists as a mixture of four separable atropisomers A-D. The two slow-interconverting pairs of rotamers A + B and C + D were separated and further characterized. HIV and CCR5-mediated chemotaxis data strongly suggest that the antiviral potency of 1 is due to rotamers A + B and not C + D. Furthermore, integrated UV, vibrational circular dichroism VCD and computational approach allowed to determine the M chirality in C + D (and P chirality in A + B). These findings imply additional avenues to be pursued toward new CCR5 antagonists.
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Affiliation(s)
- Wieslaw M. Kazmierski
- Infectious
Diseases TAU and ‡Platform Technology and Science, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, North Carolina 27709-3398, United States
| | - Susan Danehower
- Infectious
Diseases TAU and ‡Platform Technology and Science, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, North Carolina 27709-3398, United States
| | - Maosheng Duan
- Infectious
Diseases TAU and ‡Platform Technology and Science, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, North Carolina 27709-3398, United States
| | - Robert G. Ferris
- Infectious
Diseases TAU and ‡Platform Technology and Science, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, North Carolina 27709-3398, United States
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Shi N, Zhang XY, Dong CY, Hou JL, Zhang ML, Guan ZH, Li ZY, Duan M. Alterations in microRNA expression profile in rabies virus-infected mouse neurons. Acta Virol 2014; 58:120-7. [PMID: 24957716 DOI: 10.4149/av_2014_02_120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rabies virus (RABV) is known to cause a fatal infection in many mammalian species, yet its pathogenesis remains poorly understood. This study was performed to analyze the microRNA (miRNA) expression profiles in RABV-infected primary neurons of mice. A total of 53 miRNAs were found to be differentially expressed in RABV-infected samples compared with mock samples in a time-dependent manner. Among them, the expression of ten miRNAs was validated by real-time RT-PCR. Potential target genes of differentially expressed miRNAs were predicted by TargetScan. Further bioinformatics analysis indicated that these predicted targets were overrepresented in neuronal function-related Gene Ontology (GO) terms and biological pathways. The results of this study suggest that RABV may cause neuronal dysfunction by regulating cellular miRNA expression.
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25
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Kazmierski WM, Maynard A, Duan M, Baskaran S, Botyanszki J, Crosby R, Dickerson S, Tallant M, Grimes R, Hamatake R, Leivers M, Roberts CD, Walker J. Novel spiroketal pyrrolidine GSK2336805 potently inhibits key hepatitis C virus genotype 1b mutants: from lead to clinical compound. J Med Chem 2014; 57:2058-73. [PMID: 24568313 DOI: 10.1021/jm4013104] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rapid clinical progress of hepatitis C virus (HCV) replication inhibitors, including these selecting for resistance in the NS5A region (NS5A inhibitors), promises to revolutionize HCV treatment. Herein, we describe our explorations of diverse spiropyrrolidine motifs in novel NS5A inhibitors and a proposed interaction model. We discovered that the 1,4-dioxa-7-azaspiro[4.4]nonane motif in inhibitor 41H (GSK2236805) supported high potency against genotypes 1a and 1b as well as in genotype 1b L31V and Y93H mutants. Consistent with this, 41H potently suppressed HCV RNA in the 20-day RNA reduction assay. Pharmacokinetic and safety data supported further progression of 41H to the clinic.
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Affiliation(s)
- Wieslaw M Kazmierski
- GlaxoSmithKline , 5 Moore Drive, Research Triangle Park, North Carolina 27709-3398, United States
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Duan M, Zhang T, Hu W, Xie S, Sundström LF, Li Z, Zhu Z. Risk-taking behaviour may explain high predation mortality of GH-transgenic common carp Cyprinus carpio. J Fish Biol 2013; 83:1183-1196. [PMID: 24580661 DOI: 10.1111/jfb.12213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/18/2013] [Accepted: 07/03/2013] [Indexed: 06/03/2023]
Abstract
The competitive ability and habitat selection of juvenile all-fish GH-transgenic common carp Cyprinus carpio and their size-matched non-transgenic conspecifics, in the absence and presence of predation risk, under different food distributions, were compared. Unequal-competitor ideal-free-distribution analysis showed that a larger proportion of transgenic C. carpio fed within the system, although they were not overrepresented at a higher-quantity food source. Moreover, the analysis showed that transgenic C. carpio maintained a faster growth rate, and were more willing to risk exposure to a predator when foraging, thereby supporting the hypothesis that predation selects against maximal growth rates by removing individuals that display increased foraging effort. Without compensatory behaviours that could mitigate the effects of predation risk, the escaped or released transgenic C. carpio with high-gain and high-risk performance would grow well but probably suffer high predation mortality in nature.
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Affiliation(s)
- M Duan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; Key Laboratory of Biodiversity and Conservation of Aquatic Organisms, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
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27
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Kaldor I, Spitzer T, Duan M, Kazmierski WM, Boros EE. Alkali Carbonate Effects on N-(2-Hydroxyethyl)ureaCyclization: Application to a 2-Imidazolidinone Scale-Up. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Istvan Kaldor
- GlaxoSmithKline Research and Development; Five Moore Drive; Research Triangle Park; North Carolina; 27709
| | - Timothy Spitzer
- GlaxoSmithKline Research and Development; Five Moore Drive; Research Triangle Park; North Carolina; 27709
| | - Maosheng Duan
- GlaxoSmithKline Research and Development; Five Moore Drive; Research Triangle Park; North Carolina; 27709
| | - Wieslaw M. Kazmierski
- GlaxoSmithKline Research and Development; Five Moore Drive; Research Triangle Park; North Carolina; 27709
| | - Eric E. Boros
- GlaxoSmithKline Research and Development; Five Moore Drive; Research Triangle Park; North Carolina; 27709
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28
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Guan ZH, Zhang ML, Hou PL, Duan M, Cui YM, Wang XR. Identification of cellular proteins interacting with influenza A virus PB1-F2 protein. Acta Virol 2013; 56:199-207. [PMID: 23043599 DOI: 10.4149/av_2012_03_199] [Citation(s) in RCA: 8] [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: 11/08/2022]
Abstract
UNLABELLED The influenza A virus (IAV) protein PB1-F2, which is encoded by an alternative ORF of the PB1 polymerase gene, has been implicated as an important virulence factor and apoptosis inducer. However, the molecular mechanism of PB1-F2 function remains elusive. In this study, eight cellular proteins were identified as potential PB1-F2 interacting partners using the yeast two-hybrid system. Two positive candidate proteins, guanine nucleotide binding protein (G protein) beta polypeptide 2 (Gβ2) and macrophage migration inhibitory factor (MIF), were selected to be further characterized. The interaction of MIF and Gβ2 with PB1-F2 was confirmed by both GST pull-down and co-immunoprecipitation assays. Confocal laser microscopy showed that the interaction between PB1-F2 and the two cellular proteins occurred in the cytoplasm. The novel interactions between PB1-F2 and host proteins provide further pieces of evidence in the investigation of the pathogenic mechanism of IAV. KEYWORDS influenza A virus; PB1-F2; yeast two-hybrid; protein-protein interaction.
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Affiliation(s)
- Z H Guan
- Key Laboratory of Zoonosis Ministry of Education, Institute of Zoonosis, Jilin University, 130062 Changchun, P. R. China.
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29
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Li X, Liu Y, Zhang YK, Plattner JJ, Baker SJ, Bu W, Liu L, Zhou Y, Ding CZ, Zhang S, Kazmierski WM, Hamatake R, Duan M, Wright LL, Smith GK, Jarvest RL, Ji JJ, Cooper JP, Tallant MD, Crosby RM, Creech K, Wang A. Synthesis and antiviral activity of novel HCV NS3 protease inhibitors with P4 capping groups. Bioorg Med Chem Lett 2012; 22:7351-6. [DOI: 10.1016/j.bmcl.2012.10.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 10/08/2012] [Accepted: 10/15/2012] [Indexed: 12/29/2022]
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30
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Hu G, Yao H, Chaudhuri AD, Duan M, Yelamanchili SV, Wen H, Cheney PD, Fox HS, Buch S. Exosome-mediated shuttling of microRNA-29 regulates HIV Tat and morphine-mediated neuronal dysfunction. Cell Death Dis 2012; 3:e381. [PMID: 22932723 PMCID: PMC3434655 DOI: 10.1038/cddis.2012.114] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Neuronal damage is a hallmark feature of HIV-associated neurological disorders (HANDs). Opiate drug abuse accelerates the incidence and progression of HAND; however, the mechanisms underlying the potentiation of neuropathogenesis by these drugs remain elusive. Opiates such as morphine have been shown to enhance HIV transactivation protein Tat-mediated toxicity in both human neurons and neuroblastoma cells. In the present study, we demonstrate reduced expression of the tropic factor platelet-derived growth factor (PDGF)-B with a concomitant increase in miR-29b in the basal ganglia region of the brains of morphine-dependent simian immunodeficiency virus (SIV)-infected macaques compared with the SIV-infected controls. In vitro relevance of these findings was corroborated in cultures of astrocytes exposed to morphine and HIV Tat that led to increased release of miR-29b in exosomes. Subsequent treatment of neuronal SH-SY5Y cell line with exosomes from treated astrocytes resulted in decreased expression of PDGF-B, with a concomitant decrease in viability of neurons. Furthermore, it was shown that PDGF-B was a target for miR-29b as evidenced by the fact that binding of miR-29 to the 3′-untranslated region of PDGF-B mRNA resulted in its translational repression in SH-SY5Y cells. Understanding the regulation of PDGF-B expression may provide insights into the development of potential therapeutic targets for neuronal loss in HIV-1-infected opiate abusers.
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Affiliation(s)
- G Hu
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
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31
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Kazmierski WM, Hamatake R, Duan M, Wright LL, Smith GK, Jarvest RL, Ji JJ, Cooper JP, Tallant MD, Crosby RM, Creech K, Wang A, Li X, Zhang S, Zhang YK, Liu Y, Ding CZ, Zhou Y, Plattner JJ, Baker SJ, Bu W, Liu L. Discovery of Novel Urea-Based Hepatitis C Protease Inhibitors with High Potency against Protease-Inhibitor-Resistant Mutants. J Med Chem 2012; 55:3021-6. [DOI: 10.1021/jm201278q] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wieslaw M. Kazmierski
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Robert Hamatake
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Maosheng Duan
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Lois L. Wright
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Gary K. Smith
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | | | - Jing-Jing Ji
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Joel P. Cooper
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Matthew D. Tallant
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Renae M. Crosby
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Katrina Creech
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Amy Wang
- GlaxoSmithKline, Five Moore Drive, Research
Triangle Park, North Carolina 27709,
United States
| | - Xianfeng Li
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Suoming Zhang
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Yong-Kang Zhang
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Yang Liu
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Charles Z. Ding
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Yasheen Zhou
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Jacob J. Plattner
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Stephen J. Baker
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Wei Bu
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
| | - Liang Liu
- Anacor Pharmaceuticals, Inc., 1020 E. Meadow Circle, Palo Alto, California 94303,
United States
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32
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Duan M, Kazmierski W, Crosby R, Gartland M, Ji J, Tallant M, Wang A, Hamatake R, Wright L, Wu M, Zhang YK, Ding CZ, Li X, Liu Y, Zhang S, Zhou Y, Plattner JJ, Baker SJ. Discovery of novel P3-oxo inhibitor of hepatitis C virus NS3/4A serine protease. Bioorg Med Chem Lett 2012; 22:2993-6. [DOI: 10.1016/j.bmcl.2012.02.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 02/11/2012] [Accepted: 02/13/2012] [Indexed: 10/28/2022]
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33
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Sharma A, Duan M, Chowdhury R, Graiser M, Zhang H, Langston A, Lonial S, Flowers C, Haight A, Waller E. BI-Modal Age Distribution of Patients with Relapsed Hodgkin Lymphoma Undergoing Autologous Stem Cell Transplantation Correlates with Markedly Inferior Survival Among Patients Age 35 Years and Older. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.236] [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: 11/15/2022]
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34
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Duan M, Berra L, Kumar A, Wilcox S, Safford S, Goulet R, Lander M, Schmidt U. Use of Hypothermia to Allow Low-Tidal-Volume Ventilation in a Patient With ARDS. Respir Care 2011; 56:1956-8. [DOI: 10.4187/respcare.01211] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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35
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Duan M, Kazmierski WM, Tallant M, Jun JH, Edelstein M, Ferris R, Todd D, Wheelan P, Xiong Z. Discovery of a novel series of cyclic urea as potent CCR5 antagonists. Bioorg Med Chem Lett 2011; 21:6381-5. [PMID: 21930378 DOI: 10.1016/j.bmcl.2011.08.096] [Citation(s) in RCA: 9] [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] [Received: 06/24/2011] [Revised: 08/05/2011] [Accepted: 08/24/2011] [Indexed: 11/28/2022]
Abstract
A novel series of cyclic urea-based CCR5 antagonists was designed aiming to resolve instability issue in the fasted simulated intestinal fluid (FSIF) associated with the acyclic urea moiety in 1. This class of CCR5 compounds demonstrated high antiviral activities against HIV-1 infection in both HOS and PBL assays. Further evaluation of these compounds indicated that 16-R not only substantially enhanced its stability, but also exhibited excellent pharmacokinetics properties.
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Affiliation(s)
- Maosheng Duan
- Infectious Disease Medicine Discovery and Development, GlaxoSmithKline Five Moore Drive, Research Triangle Park, NC 27706, USA
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36
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Duan M, Kazmierski WM, Chong PY, Deanda F, Edelstein M, Ferris R, Peckham J, Wheelan P, Xiong Z, Zhang H, Nishizawa R, Takaoka Y. Discovery of novel pyridyl carboxamides as potent CCR5 antagonists and optimization of their pharmacokinetic profile in rats. Bioorg Med Chem Lett 2011; 21:6470-5. [PMID: 21920742 DOI: 10.1016/j.bmcl.2011.08.080] [Citation(s) in RCA: 9] [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] [Received: 05/29/2011] [Revised: 08/15/2011] [Accepted: 08/17/2011] [Indexed: 10/17/2022]
Abstract
A novel series of pyridyl carboxamide-based CCR5 inhibitors was designed, synthesized, and demonstrated to be highly potent against HIV-1 infection in both HOS and PBL assays. Attempts to evaluate this series of compounds in a rat PK model revealed its instability in rat plasma. A hypothesis for this liability was proposed, and strategies to overcome this issue were pursued, leading to discovery of highly potent 40 and 41, which featured dramatically improved rat PK profiles.
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Affiliation(s)
- Maosheng Duan
- Infectious Disease Medicine Discovery & Development, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, NC 27706, USA.
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37
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Kazmierski WM, Anderson DL, Aquino C, Chauder BA, Duan M, Ferris R, Kenakin T, Koble CS, Lang DG, McIntyre MS, Peckham J, Watson C, Wheelan P, Spaltenstein A, Wire MB, Svolto A, Youngman M. Novel 4,4-disubstituted piperidine-based C-C chemokine receptor-5 inhibitors with high potency against human immunodeficiency virus-1 and an improved human ether-a-go-go related gene (hERG) profile. J Med Chem 2011; 54:3756-67. [PMID: 21539377 DOI: 10.1021/jm200279v] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We recently described ( J. Med. Chem. 2008 , 51 , 6538 - 6546 ) a novel class of CCR5 antagonists with strong anti-HIV potency. Herein, we detail SAR converting leads 1 and 2 to druglike molecules. The pivotal structural motif enabling this transition was the secondary sulfonamide substituent. Further fine-tuning of the substituent pattern in the sulfonamide paved the way to enhancing potency and bioavailability and minimizing hERG inhibition, resulting in discovery of clinical compound 122 (GSK163929).
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38
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Li X, Zhang S, Zhang YK, Liu Y, Ding CZ, Zhou Y, Plattner JJ, Baker SJ, Bu W, Liu L, Kazmierski WM, Duan M, Grimes RM, Wright LL, Smith GK, Jarvest RL, Ji JJ, Cooper JP, Tallant MD, Crosby RM, Creech K, Ni ZJ, Zou W, Wright J. Synthesis and SAR of acyclic HCV NS3 protease inhibitors with novel P4-benzoxaborole moieties. Bioorg Med Chem Lett 2011; 21:2048-54. [DOI: 10.1016/j.bmcl.2011.02.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 02/01/2011] [Accepted: 02/02/2011] [Indexed: 10/18/2022]
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39
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Li X, Zhang YK, Liu Y, Zhang S, Ding CZ, Zhou Y, Plattner JJ, Baker SJ, Liu L, Bu W, Kazmierski WM, Wright LL, Smith GK, Jarvest RL, Duan M, Ji JJ, Cooper JP, Tallant MD, Crosby RM, Creech K, Ni ZJ, Zou W, Wright J. Synthesis of new acylsulfamoyl benzoxaboroles as potent inhibitors of HCV NS3 protease. Bioorg Med Chem Lett 2010; 20:7493-7. [DOI: 10.1016/j.bmcl.2010.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 09/28/2010] [Accepted: 10/01/2010] [Indexed: 10/19/2022]
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40
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Ding CZ, Zhang YK, Li X, Liu Y, Zhang S, Zhou Y, Plattner JJ, Baker SJ, Liu L, Duan M, Jarvest RL, Ji J, Kazmierski WM, Tallant MD, Wright LL, Smith GK, Crosby RM, Wang AA, Ni ZJ, Zou W, Wright J. Synthesis and biological evaluations of P4-benzoxaborole-substituted macrocyclic inhibitors of HCV NS3 protease. Bioorg Med Chem Lett 2010; 20:7317-22. [DOI: 10.1016/j.bmcl.2010.10.071] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 10/11/2010] [Accepted: 10/14/2010] [Indexed: 11/28/2022]
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41
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Duan M, Peckham J, Edelstein M, Ferris R, Kazmierski WM, Spaltenstein A, Wheelan P, Xiong Z. Discovery of N-benzyl-N'-(4-pipyridinyl)urea CCR5 antagonists as anti-HIV-1 agents (II): modification of the acyl portion. Bioorg Med Chem Lett 2010; 20:7401-4. [PMID: 21055933 DOI: 10.1016/j.bmcl.2010.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/06/2010] [Accepted: 10/08/2010] [Indexed: 11/19/2022]
Abstract
Modification of the acyl moiety in the CCR5 lead molecule 2 led to identification of several new classes of CCR5 antagonists. Antiviral activity and pharmacokinetic properties of the synthesized compounds were evaluated. Structure-activity relationship (SAR) derived from these studies further guided the optimization efforts, ultimately leading to the discovery of 36 with an acceptable drug-like profile.
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Affiliation(s)
- Maosheng Duan
- Infectious Diseases Center for Excellence in Drug Discovery, GlaxoSmithKline, Research Ttriangle Park, NC 27709, USA.
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42
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Duan M, Peckham J, Edelstein M, Ferris R, Kazmierski WM, Spaltenstein A, Wheelan P, Xiong Z. Discovery of N-benzyl-N'-(4-pipyridinyl)urea CCR5 antagonists as anti-HIV-1 agents (I): optimization of the amine portion. Bioorg Med Chem Lett 2010; 20:7397-400. [PMID: 21035337 DOI: 10.1016/j.bmcl.2010.10.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/05/2010] [Accepted: 10/06/2010] [Indexed: 11/19/2022]
Abstract
Several series of carbamate, urea and carboxamide-based CCR5 antagonists have been discovered via optimizations at the amine portion of lead compound 2. All compounds were evaluated for their antiviral activities. Lead urea 29 showed good pharmacokinetic properties, justifying further development of this series.
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Affiliation(s)
- Maosheng Duan
- Infectious Diseases Center for Excellence in Drug Discovery, GlaxoSmithKline, Research Triangle Park, NC 27709, USA.
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43
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Jiang Z, Wang D, Yang S, Duan M, Bu P, Green A, Zhang X. Integrated response toward HIV: a health promotion case study from China. Health Promot Int 2010; 26:196-211. [DOI: 10.1093/heapro/daq044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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Duan M, Zhang T, Hu W, Sundström LF, Wang Y, Li Z, Zhu Z. Elevated ability to compete for limited food resources by 'all-fish' growth hormone transgenic common carp Cyprinus carpio. J Fish Biol 2009; 75:1459-1472. [PMID: 20738625 DOI: 10.1111/j.1095-8649.2009.02393.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Food consumption, number of movements and feeding hierarchy of juvenile transgenic common carp Cyprinus carpio and their size-matched non-transgenic conspecifics were measured under conditions of limited food supply. Transgenic fish exhibited 73.3% more movements as well as a higher feeding order, and consumed 1.86 times as many food pellets as their non-transgenic counterparts. After the 10 day experiment, transgenic C. carpio had still not realized their higher growth potential, which may be partly explained by the higher frequency of movements of transgenics and the 'sneaky' feeding strategy used by the non-transgenics. The results indicate that these transgenic fish possess an elevated ability to compete for limited food resources, which could be advantageous after an escape into the wild. It may be that other factors in the natural environment (i.e. predation risk and food distribution), however, would offset this advantage. Thus, these results need to be assessed with caution.
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Affiliation(s)
- M Duan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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45
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Duan M, Kazmierski W, Aquino C, Ferris R, Kenakin T, Watson C, Wheelan P. 4,4-Disubstituted Cyclohexylamine based CCR5 Chemokine Receptor Antagonists as Anti-HIV-1 agents. Antiviral Res 2009. [DOI: 10.1016/j.antiviral.2009.02.136] [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: 11/24/2022]
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46
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Duan M, Aquino C, Ferris R, Kazmierski WM, Kenakin T, Koble C, Wheelan P, Watson C, Youngman M. [2-(4-Phenyl-4-piperidinyl)ethyl]amine based CCR5 antagonists: derivatizations at the N-terminal of the piperidine ring. Bioorg Med Chem Lett 2009; 19:1610-3. [PMID: 19233649 DOI: 10.1016/j.bmcl.2009.02.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Revised: 01/30/2009] [Accepted: 02/03/2009] [Indexed: 10/21/2022]
Abstract
Several series of CCR5 antagonists have been discovered by derivatization at the N-terminal of the piperidine ring of the core template 2. Some derivatives exhibited potent inhibition against HIV-1infection. The pharmacokinetic properties of the lead compounds 11a, 14a, 15b, and 16b have been evaluated in vivo.
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Affiliation(s)
- Maosheng Duan
- Infectious Diseases Center for Excellence in Drug Discovery, GlaxoSmithKline, Five Moore Drive, Research Triangle Park, NC 27709, USA
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47
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Yu M, Shao D, Feng X, Duan M, Xu J. Effects of ketamine on pulmonary TLR4 expression and NF-kappa B activation during endotoxemia in rats. ACTA ACUST UNITED AC 2007; 29:395-9. [DOI: 10.1358/mf.2007.29.6.1119165] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Feng X, Ren B, Xie W, Huang Z, Liu J, Guan R, Duan M, Xu J. Influence of hydroxyethyl starch 130/0.4 in pulmonary neutrophil recruitment and acute lung injury during polymicrobial sepsis in rats. Acta Anaesthesiol Scand 2006; 50:1081-8. [PMID: 16987337 DOI: 10.1111/j.1399-6576.2006.01113.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Acute lung injury (ALI) is a progressive syndrome associated with significant mortality in sepsis patients. Neutrophils are key cells in the inflammatory response that characterizes ALI. This study was designed to explore the effects of hydroxyethyl starch (HES) 130/0.4 (a novel plasma substitute) on pulmonary neutrophil recruitment and associated ALI in a rat sepsis model induced by cecal ligation and puncture (CLP). METHODS Animals were randomly assigned to six groups [saline control; CLP and saline; CLP and HES (7.5, 15 and 30 ml/kg); and HES control], subjected to CLP and infused with or without HES 130/0.4 4 h after CLP. Six hours later, the pulmonary capillary permeability (PCP), myeloperoxidase (MPO) activity, lung histological changes, tumor necrosis factor-alpha, interleukin-1beta and cytokine-induced neutrophil chemoattractant levels, P-selectin mRNA expression and nuclear factor-kappa B (NF-kappaB) activation were measured. RESULTS Resuscitation with HES 130/0.4 significantly attenuated the CLP-induced increase in PCP, MPO activity, cytokine/chemokine levels, mRNA expression of P-selectin and NF-kappaB activation, all of which are involved in the recruitment of neutrophils. Groups receiving the higher doses of HES 130/0.4 (15 and 30 ml/kg) were more adequately resuscitated. CONCLUSION HES 130/0.4 can inhibit CLP-induced neutrophil recruitment and subsequent ALI by attenuating cytokines/chemokines, adhesion molecule-mediated inflammation and NF-kappaB activation.
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Affiliation(s)
- X Feng
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
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Regala C, Duan M, Zou J, Salminen M, Olivius P. Xenografted fetal dorsal root ganglion, embryonic stem cell and adult neural stem cell survival following implantation into the adult vestibulocochlear nerve. Exp Neurol 2005; 193:326-33. [PMID: 15869935 DOI: 10.1016/j.expneurol.2004.12.027] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2004] [Revised: 12/19/2004] [Accepted: 12/20/2004] [Indexed: 01/27/2023]
Abstract
Sensorineural hearing loss is a disabling condition. In the post-embryonic and adult mammalian inner ear, the regeneration of auditory hair cells, spiral ganglion neurons or their axons does not occur naturally. This decrease in excitable neurons limits the success of auditory rehabilitation. Allografts and xenografts have shown promise in the treatment of a variety of neurological diseases. Fetal dorsal root ganglion (DRG) neurons can extend functional connections in the rat spinal cord. Embryonic stem cells (ES cells) and adult neural stem cells (ANSC) have the potential to differentiate into neurons. We have implanted embryonic days (E) 13-16 fetal mouse DRGs from transgenic mouse lines that express Enhanced Green Fluorescent Protein (EGFP) or lacZ reporter genes, EGFP-expressing ES cells or lacZ-expressing ANSC into the injured vestibulocochlear nerve of adult rats and guinea pigs. Survival of the implants was assessed 2 to 4 weeks postoperatively. For further evaluation of the differentiation of the implanted ES-cells, we double labeled with the mouse-specific neuronal antibody Thy 1.2. The rats implanted with EGFP- or lacZ-expressing DRGs showed labeled DRGs after sacrifice. In addition, EGFP-positive nerve fibers were seen growing within the proximal nerve. The results from the EGFP ES cells and lacZ ANSC revealed reporter-expressing cells at the site of injection in the vestibulocochlear nerve of the host rats and guinea pigs but also within the brain stem. Thy 1.2 profiles were seen among the EGFP ES cells within the 8th cranial nerve. The findings of this study indicate that the vestibulocochlear nerve of adult rats and guinea pigs will support xenotransplants of embryonic DRG, ES cells and ANSC. This may have future clinical applicability in recreating a neuronal conduit following neuronal injury between the inner ear and the central nervous system (CNS).
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Affiliation(s)
- C Regala
- Department of Clinical Neuroscience, Section of Otorhinolaryngology, Karolinska Institutet, Karolinska Hospital, PO Box SE-171 76 Stockholm, Sweden
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Yang J, Li W, Duan M, Zhou Z, Lin N, Wang Z, Sun J, Xu J. Large dose ketamine inhibits lipopolysaccharide-induced acute lung injury in rats. Inflamm Res 2005; 54:133-7. [PMID: 15883747 DOI: 10.1007/s00011-004-1334-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Sepsis is associated with the highest risk of progression to acute lung injury or the acute respiratory distress syndrome. Ketamine has been advocated for anesthesia in endotoxemic and other severely ill patients because it is a cardiovascular stimulant. Our study was designed to investigate the effect of ketamine on the endotoxin-induced acute lung injury in vivo. MATERIALS AND METHODS Adult male Wistar rats were randomly divided into 6 groups: saline controls; rats challenged with endotoxin (5 mg/kg) and treated with saline; challenged with endotoxin (5 mg/kg) and treated with ketamine (0.5 mg/kg); challenged with endotoxin (5 mg/kg) and treated with ketamine (5 mg/kg); challenged with endotoxin (5 mg/kg) and treated with ketamine (50 mg/kg); saline injected and treated with ketamine (50 mg/kg). TNF-alpha, IL-6 and NF-kappa B were investigated in the tissues of the lung after 2 h. Myeloperoxidase (MPO) activity and wet/dry weight ratio were investigated 6 h later. RESULTS We demonstrated that intravenous administration of endotoxin could provoke significant lung injury, which was characterized by increase of MPO activity and wet/dry weight ratio, TNF-alpha and IL-6 expression and NF-kappa B activation. Ketamine (5, 50 mg/kg) inhibited endotoxin-induced NF-kappa B activation. Ketamine only at a dose of 50 mg/kg inhibited TNF-alpha and IL-6 production, and decreased MPO activity and wet/dry weight ratio after endotoxin challenge. CONCLUSIONS Ketamine, only at a supra-anesthetic dosage, could inhibit endotoxin-induced pulmonary inflammation in vivo.
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Affiliation(s)
- J Yang
- School of Medicine, Nanjing University and Department of Anesthesiology, Jinling Hospital, 305 East Zhongshan Road, Nanjing 210002, China.
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