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Li S, Zhang Z, Wang Z, Wang K, Sui M, Liu D, Liang K. Lenvatinib‑based treatment regimens in conversion therapy of unresectable hepatocellular carcinoma: A systematic review and meta‑analysis. Oncol Lett 2024; 27:265. [PMID: 38659422 PMCID: PMC11040543 DOI: 10.3892/ol.2024.14398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/20/2024] [Indexed: 04/26/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is a malignancy associated with high morbidity and mortality rates. Conversion therapy provides patients with unresectable HCC (uHCC) the opportunity to undergo radical treatment and achieve long-term survival. Despite accumulating evidence regarding the efficacy of conversion therapy, the optimal treatment approach for such therapy remains uncertain. Lenvatinib (LEN) has shown efficacy and tolerable rates of adverse events (AEs) when applied in combination with immune checkpoint inhibitors (ICIs) or locoregional therapy (LRT) over the past decade. Therefore, the present meta-analysis was performed to systematically assess the safety and efficacy of LEN-based treatment regimens in conversion therapies for uHCC. Data on outcomes, including the conversion rate, objective response rate (ORR), disease control rate (DCR) and AE incidence in patients with uHCC, were collected. A systematic literature search was performed using MEDLINE, Embase, Web of Science and Cochrane Library databases, up to the date of September 1, 2023. In total, 16 studies, encompassing a total of 1,650 cases of uHCC, were included in the final meta-analysis. The pooled conversion rates for LEN alone, LEN + ICI, LEN + LRT and LEN + ICI + LRT were calculated to be 0.04 (95% CI, 0.00-0.07; I2=77%), 0.23 (95% CI, 0.16-0.30; I2=66%), 0.14 (95% CI, 0.10-0.18; I2=0%) and 0.35 (95% CI, 0.23-0.47; I2=88%), respectively. The pooled ORRs for LEN alone, LEN + ICI, LEN + LRT and LEN + ICI + LRT were found to be 0.45 (95% CI, 0.23-0.67; I2=96%), 0.49 (95% CI, 0.39-0.60; I2=78%), 0.43 (95% CI, 0.24-0.62; I2=88%) and 0.69 (95% CI, 0.56-0.82; I2=92%), respectively. The pooled DCRs for LEN alone, LEN + ICI, LEN + LRT and LEN + ICI + LRT were observed to be 0.77 (95% CI, 0.73-0.81; I2=23%), 0.82 (95% CI, 0.69-0.95; I2=90%), 0.67 (95% CI, 0.39-0.94; I2=94%) and 0.87 (95% CI, 0.82-0.93; I2=67%), respectively. The pooled grade ≥3 AEs for LEN alone, LEN + ICI, LEN + LRT and LEN + ICI + LRT were 0.25 (95% CI, 0.14-0.36; I2=89%), 0.43 (95% CI, 0.34-0.53; I2=23%), 0.42 (95% CI, 0.19-0.66; I2=81%) and 0.35 (95% CI, 0.17-0.54; I2=94%), respectively. These findings suggested that LEN-based combination strategies may confer efficacy and acceptable tolerability for patients with uHCC. In particular, LEN + ICI, with or without LRT, appears to represent a highly effective conversion regimen, with an acceptable conversion rate and well-characterized safety profile.
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Affiliation(s)
- Saixin Li
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
- Beijing Municipal Geriatric Medical Research Center, Beijing 100053, P.R. China
| | - Zeyu Zhang
- Department of Hepatobiliary Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223001, P.R. China
| | - Zheng Wang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
- Beijing Municipal Geriatric Medical Research Center, Beijing 100053, P.R. China
| | - Kenan Wang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
| | - Minghao Sui
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
| | - Dongbin Liu
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
| | - Kuo Liang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, P.R. China
- Beijing Municipal Geriatric Medical Research Center, Beijing 100053, P.R. China
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Zhou C, Sui M, Guo Y, Du S. Enhancing Fenton-like reaction through a multifunctional molybdenum disulfide film coating on nano zero valent iron surface (MoS 2@nZVI): Collaboration of radical and non-radical pathways. Sci Total Environ 2024; 920:170818. [PMID: 38342461 DOI: 10.1016/j.scitotenv.2024.170818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/17/2024] [Accepted: 02/06/2024] [Indexed: 02/13/2024]
Abstract
In this study, we synthesized nano zero-valent iron incorporated with a multifunctional molybdenum disulfide film (MoS2@nZVI). The material exhibited a 100.00 % removal efficiency for sulfamethoxazole (SMX) and achieved a kobs of 0.4485 min-1 within 10 min. The excellent degradation performance can be attributed to the incorporation of the MoS2 film, which facilitated Fe2+ regeneration. Simultaneously, the MoS2 film assisted in proton accumulation and electron transfer, thereby amplifying the efficiency of SMX degradation across a wide pH range. Comprehensive experimental examinations and characterizations confirmed the selectivity and stability of the MoS2@nZVI catalysts, encompassing both degradation efficiency and structural stability. Interestingly, the MoS2@nZVI/PMS system for SMX degradation significantly involved a non-radical mechanism (1O2), along with radicals (SO4·-, ·OH, and O2·-). The direct oxidation of PMS by Fe2+ not only facilitated the generation of ·OH and SO4·- but also actively engaged in a reaction with O2, leading to the production of O2·-. The primary pathway for 1O2 production was established through the interplay between Mo6+ and O2·-, in conjunction with the direct electron transfer (DET) mechanism between PMS and SMX. The contributions of these active species to SMX degradation occurred in the following precedence: SO4·- > 1O2 > ·OH > O2·-. Notably, the primary pathways for radicals and non-radicals were studied during separate reaction periods. This investigation proposed a promising approach for mitigating pharmaceutical pollutants using a transition metal sulfide-modified nZVI catalyst.
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Affiliation(s)
- Chundi Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Yali Guo
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Songhang Du
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
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Zhang H, Li X, Hui Z, Huang S, Cai M, Shi W, Lin Y, Shen J, Sui M, Lai Q, Shao Z, Dou J, Luo X, Ge Y, Tang X. A Semisynthesis Platform for the Efficient Production and Exploration of Didemnin-Based Drugs. Angew Chem Int Ed Engl 2024; 63:e202318784. [PMID: 38291557 DOI: 10.1002/anie.202318784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/28/2024] [Accepted: 01/30/2024] [Indexed: 02/01/2024]
Abstract
Plitidepsin (or dehydrodidemnin B), an approved anticancer drug, belongs to the didemnin family of cyclic depsipeptides, which are found in limited quantities in marine tunicate extracts. Herein, we introduce a new approach that integrates microbial and chemical synthesis to generate plitidepsin and its analogues. We screened a Tistrella strain library to identify a potent didemnin B producer, and then introduced a second copy of the didemnin biosynthetic gene cluster into its genome, resulting in a didemnin B titer of approximately 75 mg/L. Next, we developed two straightforward chemical strategies to convert didemnin B into plitidepsin, one of which involved a one-step synthetic route giving over 90 % overall yield. Furthermore, we synthesized 13 new didemnin derivatives and three didemnin probes, enabling research into structure-activity relationships and interactions between didemnin and proteins. Our study highlights the synergistic potential of biosynthesis and chemical synthesis in overcoming the challenge of producing complex natural products sustainably and at scale.
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Affiliation(s)
- Haili Zhang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Xuyang Li
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Zhen Hui
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Shipeng Huang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, 518000, Shenzhen, China
| | - Mingwei Cai
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Wenguang Shi
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Yang Lin
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
| | - Jie Shen
- College of Life Science and Technology, China Pharmaceutical University, 211198, Nanjing, China
| | - Minghao Sui
- College of Life Science and Technology, China Pharmaceutical University, 211198, Nanjing, China
| | - Qiliang Lai
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, 361005, Xiamen, China
| | - Zongze Shao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, 361005, Xiamen, China
| | - Jie Dou
- College of Life Science and Technology, China Pharmaceutical University, 211198, Nanjing, China
| | - Xiaozhou Luo
- Center for Synthetic Biochemistry, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, China
| | - Yun Ge
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, 518055, Shenzhen, China
| | - Xiaoyu Tang
- Institute of Chemical Biology, Shenzhen Bay Laboratory, 518132, Shenzhen, China
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Guo Y, Sui M, Liu S, Li T, Lv X, Yu M, Mo Y. Insight into cobalt substitution in LaFeO 3-based catalyst for enhanced activation of peracetic acid: Reactive species and catalytic mechanism. J Hazard Mater 2024; 461:132662. [PMID: 37801973 DOI: 10.1016/j.jhazmat.2023.132662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/28/2023] [Accepted: 09/26/2023] [Indexed: 10/08/2023]
Abstract
In this study, a hollow sphere-like Co-modified LaFeO3 perovskite catalyst (LFC73O) was developed for peracetic acid (PAA) activation to degrade sulfamethoxazole (SMX). Results indicated that the constructed heterogeneous system achieved a 99.7% abatement of SMX within 30 min, exhibiting preferable degradation performance. Chemical quenching experiments, probe experiments, and EPR techniques were adopted to elucidate the involved mechanism. It was revealed that the superior synergistic effect of electron transfer and oxygen defects in the LFC73O/PAA system enhanced the oxidation ability of PAA. The Co atoms doped into LaFeO3 as the main active site with the original Fe atoms as an auxiliary site exhibited high activity to mediate PAA activation via the Co(III)/Co(II) cycle, generating carbon-centered radicals (RO·) including CH3C(O)O· and CH3C(O)OO·. The oxygen vacancies induced by cobalt substitution also served as reaction sites, facilitating the dissociation of PAA and production of ROS. Furthermore, the degradation pathways were postulated by DFT calculation and intermediates identification, demonstrating that the electron-rich sites of SMX molecules such as amino group, aromatic ring, and S-N bond, were more susceptible to oxidation by reactive species. This study offers a novel perspective on developing catalysts with the coexistence of multiple active units for PAA activation in environmental remediation.
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Affiliation(s)
- Yali Guo
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| | - Shuan Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Tian Li
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Xinyuan Lv
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Miao Yu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Yaojun Mo
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
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Zhou C, Sui M, Du S. Insights into the electron activation mechanisms at the micro level by nano zero-valent iron supported by molybdenum disulfide (nZVI@MD) from preparation to application. J Hazard Mater 2023; 458:131968. [PMID: 37429190 DOI: 10.1016/j.jhazmat.2023.131968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/14/2023] [Accepted: 06/28/2023] [Indexed: 07/12/2023]
Abstract
Both molybdenum disulfide (MoS2) and nano zero-valent iron (nZVI) exhibit excellent adsorption abilities. However, the constrained conductivity of MoS2 and the lack of selectivity of nZVI for electron transfer still pose challenges. In this study, we designed a series of novel nano zero-valent iron supported by molybdenum disulfide composites (nZVI@MD) with multiple electron-rich active sites, including iron dopant replacement, iron atom intercalation and exposed Mo4+, for effective removal of Cr(VI). Results showed that preparation temperature and the amount of MoS2 added were identified as the two most significant factors affecting the reduction properties of nZVI@MD. Systematic experiments revealed that the nZVI@MD exhibited good anti-interference performance, stability and reusability due to its excellent electron selectivity. Characterization results exhibited that iron atoms replaced the sulfur vacancies in MoS2 and inserted into an intercalation of MoS2 during the preparation process. The mechanisms underlying the uptake of Cr(VI) by nZVI@MD can be proposed as follows: (i) electrostatic interactions, (ii) reduction reaction, and (iii) co-precipitation involving Fe-O-Cr. Furthermore, nZVI@MD exhibited excellent electron activity, hydrophilicity and oxidation resistance, confirmed by density functional theory (DFT) calculations. This work provided new strategies and mechanistic insights for the rational design of adsorbents.
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Affiliation(s)
- Chundi Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Songhang Du
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
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Yu M, Gao R, Lv X, Sui M, Li T. Inactivation of phage phiX174 by UV 254 and free chlorine: Structure impairment and function loss. J Environ Manage 2023; 340:117962. [PMID: 37086557 DOI: 10.1016/j.jenvman.2023.117962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 04/14/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
Disinfection is widely applied in water and wastewater treatment to inactivate viruses. However, the inactivation mechanism associated with viral structural alteration during disinfection is still not clear. In this work, inactivation of bacteriophage phiX174 by ultraviolet radiation (UV254) and free chlorine (FC), two most commonly used disinfection processes, was studied at the molecular level to investigate the relationship between phiX174 genome impairment and virus inactivation, and the correlation between protein impairment and function loss. Double-layer agar technique, quantitative real-time polymerase chain reaction (qPCR), real-time reverse transcription-polymerase chain reaction (RT-qPCR), and liquid chromatography-tandem mass spectrometry techniques (LC-MS/MS), together with structure impairment and function experiments were implemented to quantitatively analyze the inactivation and damage to genome and proteins of phiX174. Results showed that UV254 and FC could effectively inactivate phiX174 at the practical doses (UV254 dose of 30 mJ/cm2, and FC of 1-3 mg/L) used in water treatment plants, accompanied with the damage to viral genome and proteins. Specifically, a UV254 irradiation dose of 9.6 mJ/cm2, and FC at an initial concentration of 1 mg/L at 4 min could lead to a 4-log10 inactivation. Nevertheless, the combination of these two methods at selected doses played no significant synergistic disinfection effect. During UV254 disinfection, the proportion of phiX174 with damaged genome was similar with that of the inactivated phiX174. In addition, UV254 and FC could disrupt proteins of phiX174 such as H protein, thereby hindering the physiological function associated with these proteins. With these findings, it is suggested that UV254 and FC disinfection could hinder the injection of the viral genome into host cells, thus resulting in the inactivation of phiX174. This work provides a comprehensive study of the inactivation mechanism of phiX174, which can enhance the applicability of UV254 and FC in water treatment plants, and facilitate the design and optimization of disinfection technologies for virus control in drinking water and wastewater worldwide to ensure the biosafety.
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Affiliation(s)
- Miao Yu
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China
| | - Rui Gao
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China
| | - Xinyuan Lv
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China
| | - Minghao Sui
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, People's Republic of China.
| | - Tian Li
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, 200092, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, People's Republic of China.
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Wang Z, Li S, Sui M, Liu J, Liang K, Liu D. Agenesis of the left lobe of liver. ANZ J Surg 2022; 92:3377-3378. [PMID: 35524401 DOI: 10.1111/ans.17704] [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] [Received: 11/20/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 12/31/2022]
Affiliation(s)
- Zheng Wang
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Saixin Li
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Minghao Sui
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Jiafeng Liu
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Kuo Liang
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Dongbin Liu
- Department of General Surgery, Xuan Wu Hospital, Capital Medical University, Beijing, China
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Wang Z, Li S, Jia Y, Liu M, Yang K, Sui M, Liu D, Liang K. Clinical prognosis of intraoperative blood salvage autotransfusion in liver transplantation for hepatocellular carcinoma: A systematic review and meta-analysis. Front Oncol 2022; 12:985281. [PMID: 36330502 PMCID: PMC9622948 DOI: 10.3389/fonc.2022.985281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 09/29/2022] [Indexed: 11/18/2022] Open
Abstract
Background Intraoperative blood salvage autotransfusion(IBSA) has been widely used in a variety of surgeries, but the use of IBSA in hepatocellular carcinoma (HCC) patients undergoing liver transplantation (LT) is controversial. Numerous studies have reported that IBSA used during LT for HCC is not associated with adverse oncologic outcomes. This systematic review and meta-analysis aims to estimate the clinical prognosis of IBSA for patients with H+CC undergoing LT. Methods MEDLINE, Embase, Web of Science, and Cochrane Library were searched for articles describing IBSA in HCC patients undergoing LT from the date of inception until May 1, 2022, and a meta-analysis was performed. Study heterogeneity was assessed by I2 test. Publication bias was evaluated by funnel plots, Egger’s and Begg’s test. Results 12 studies enrolling a total of 2253 cases (1374 IBSA and 879 non-IBSA cases) are included in this meta-analysis. The recurrence rate(RR) at 5-year(OR=0.75; 95%CI, 0.59-0.95; P=0.02) and 7-year(OR=0.65; 95%CI, 0.55-0.97; P=0.03) in the IBSA group is slightly lower than non-IBSA group. There are no significant differences in the 1-year RR(OR=0.77; 95% CI, 0.56-1.06; P=0.10), 3-years RR (OR=0.79; 95% CI, 0.62-1.01; P=0.06),1-year overall survival outcome(OS) (OR=0.90; 95% CI, 0.63-1.28; P=0.57), 3-year OS(OR=1.16; 95% CI, 0.83-1.62; P=0.38), 5-year OS(OR=1.04; 95% CI, 0.76-1.40; P=0.82),1-year disease-free survival rate(DFS) (OR=0.80; 95%CI, 0.49-1.30; P=0.36), 3-year DFS(OR=0.99; 95%CI, 0.64-1.55; P=0.98), and 5-year DFS(OR=0.88; 95%CI, 0.60-1.28; P=0.50). Subgroup analysis shows a difference in the use of leukocyte depletion filters group of 5-year RR(OR=0.73; 95%CI, 0.55-0.96; P=0.03). No significant differences are found in other subgroups. Conclusions IBSA provides comparable survival outcomes relative to allogeneic blood transfusion and does not increase the tumor recurrence for HCC patients after LT. Systematic review registration https://www.crd.york.ac.uk/prospero/, identifier CRD42022295479.
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Affiliation(s)
- Zheng Wang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Saixin Li
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yitong Jia
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Miao Liu
- Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kun Yang
- Department of Evidence-Based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Minghao Sui
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Dongbin Liu
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kuo Liang
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- *Correspondence: Kuo Liang,
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Zhang Y, Sui M, Bai Z, Zhou D, Lin B, Chen G, Hou Y, Li N. Study on components with neuroinflammation inhibitory activities from Croton tiglium L. var. xiaopadou. Chem Biodivers 2022; 19:e202200473. [PMID: 35931661 DOI: 10.1002/cbdv.202200473] [Citation(s) in RCA: 1] [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: 06/22/2022] [Accepted: 08/05/2022] [Indexed: 11/12/2022]
Abstract
An undescribed tigliane diterpenoid 12- O -tiglyl-13-acetyl-17- O -tiglyl-phorbol, together with thirty-three known components, were isolated from the stems of Croton tiglium L. var. xiaopadou (Euphorbiaceae). Their structures were established based on spectroscopic data and calculated ECD spectra. Their anti-neuroinflammatory effects were evaluated in LPS-induced BV-2 microglia. Thirteen tested compounds showed significant inhibitory activities, especially compounds 10 , 16 , 18 and 21 exhibited an inhibitory effect with IC 50 values in the range of 12.39 to 17.80 μM, which are comparable with that of the positive control (minocycline, IC 50 13.92 μM).
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Affiliation(s)
- Yanping Zhang
- Shenyang Pharmaceutical University, School of Traditional Chinese Materia Medica, Wenhua Road 103, Shenyang, CHINA
| | - Minghao Sui
- Shenyang Pharmaceutical University, School of Traditional Chinese Materia Medica, Wenhua Road 103, Shenyang, CHINA
| | - Zisong Bai
- Northeastern University, College of Life and Health Sciences, Shenyang 110004, Shenyang, CHINA
| | - Di Zhou
- Shenyang Pharmaceutical University, School of Traditional Chinese Materia Medica, Wenhua Road 103, Shenyang, CHINA
| | - Bin Lin
- Shenyang Pharmaceutical University, School of Pharmaceutical Engineering, Wenhua Road 103, Shenyang, CHINA
| | - Gang Chen
- Shenyang Pharmaceutical University, School of Traditional Chinese Materia Medica, Wenhua Road 103, Shenyang, CHINA
| | - Yue Hou
- Northeastern University, College of Life and Health Sciences, Shenyang 110004, Shenyang, CHINA
| | - Ning Li
- Shenyang Pharmaceutical University, School of Traditional Chinese Materia Medica , Key Laboratory of Structure-Based Drug Design and Discovery, Wenhua Road 103, Not Available, 110016, Shenyang, CHINA
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Jiang Y, Jiang J, Ran Q, Li T, He H, Liu J, Chu H, Sui M, Dong B. Quantum dots modified bismuth-based hierarchical dual Z-scheme heterojunction for photocatalytic performance enhancement: Mineralization, degradation pathways and mechanism. Chemical Engineering Journal Advances 2022. [DOI: 10.1016/j.ceja.2022.100240] [Citation(s) in RCA: 1] [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: 01/19/2023] Open
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Wang J, Sui M, Li H, Yuan B. The effects of ultraviolet disinfection on vancomycin-resistant Enterococcus faecalis. Environ Sci Process Impacts 2020; 22:418-429. [PMID: 32002526 DOI: 10.1039/c9em00435a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The emergence of vancomycin-resistant Enterococcus faecalis (E. faecalis) in water is threatening the health of human beings. The effect of ultraviolet disinfection on vancomycin-resistant E. faecalis, including the effectiveness, photoreactivation and dark repair of E. faecalis, and the deactivation mechanism were investigated in this work. Ultraviolet disinfection could quickly inactivate the target antibiotic resistant bacterium (ARB), E. faecalis, and it caused damage to the cell membrane and induced the decrease of the total adenosine triphosphate (ATP) content and the superoxide dismutase (SOD) activity significantly (p < 0.05). E. faecalis could reactivate after ultraviolet disinfection especially under light conditions. Furthermore, the removal of the selected antibiotic resistance gene (ARG), vanB, by ultraviolet radiation and the effect on the vancomycin resistance of E. faecalis were investigated, which showed that ultraviolet disinfection had no significant effect on the vancomycin resistance of E. faecalis (p > 0.05).
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Affiliation(s)
- Jingyu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Hongwei Li
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Bojie Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
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12
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Yuan B, Sui M, Lu H, Wang J, Qin J. The combined effect of light irradiation and chloride on the physicochemical properties of silver nanoparticles. RSC Adv 2020; 10:228-235. [PMID: 35492535 PMCID: PMC9047535 DOI: 10.1039/c9ra09261g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/10/2019] [Indexed: 11/21/2022] Open
Abstract
The evolution of various properties of Ag NPs during light irradiation in Cl−-containing water were investigated, and the mechanism was deeply studied.
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Affiliation(s)
- Bojie Yuan
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Minghao Sui
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Hongtao Lu
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jingyu Wang
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
| | - Jie Qin
- Shanghai Institute of Pollution Control and Ecological Security
- State Key Laboratory of Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
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13
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Li H, Ge X, Pan K, Sui M, Cai H, Cui C, Li C, Lu S. The Predictive Role of Tenascin-C and Cellular Communication Network Factor 3 (CCN3) in Post Hepatectomy Liver Failure in a Rat Model and 50 Patients Following Partial Hepatectomy. Med Sci Monit 2019; 25:6755-6766. [PMID: 31494663 PMCID: PMC6752097 DOI: 10.12659/msm.917331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Matricellular proteins of the extracellular matrix (ECM) include tenascin-C (TNC) and cellular communication network factor 3 (CCN3). This study aimed to investigate the role of TNC and CCN3 as prognostic factors for post hepatectomy liver failure (PHLF) in a rat model of partial hepatectomy and 50 patients following partial hepatectomy. Material/Methods Sprague-Dawley rats underwent 85% (n=53) or 90% hepatectomy (n=53) in the partial hepatectomy (PHx) model. TNC and CCN3 mRNA expression in residual liver tissue was evaluated using quantitative reverse transcription-polymerase chain reaction (qRT-PCR), and enzyme-linked immunoassay (ELISA) determined the serum levels of TNC and CCN3. In 50 patients who underwent partial hepatectomy, TNC and CCN3 serum levels were measured on postoperative day 1 and day 3. Results In the rat partial hepatectomy model, mRNA and serum levels of TNC and CCN3 were significantly increased within the first 24 h, and were higher in the 90% PHx group compared with the 85% PHx group. Fifty patients who underwent partial hepatectomy, included patients with PHLF (n=12) and patients without PHLF (n=38). Multivariate analysis confirmed that serum levels on postoperative day 3 TNChigh+CCN3high was a significant predictor of PHLF, which was associated with more than twice the risk of severe morbidity when compared with the low-risk patients (80% vs. 30%) and a significantly longer hospital stay (17 days vs. 8 days). Conclusions Further studies are needed to evaluate the potential role of the matricellular proteins, TNC and CCN3 as early clinical predictors for PHLF.
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Affiliation(s)
- Hao Li
- Department of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Xinlan Ge
- Institute of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Ke Pan
- Institute of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Minghao Sui
- Department of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Huayong Cai
- Department of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Chao Cui
- Department of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Chonghui Li
- Institute of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
| | - Shichun Lu
- Department of Hepatobiliary Surgery, The First Medical Center, Chinese People's Liberation Army (PLA) General Hospital, Chinese PLA Medical School, Beijing, China (mainland)
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14
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Wang J, Sui M, Ma Z, Li H, Yuan B. Antibacterial performance of polymer quaternary ammonium salt-capped silver nanoparticles on Bacillus subtilis in water. RSC Adv 2019; 9:25667-25676. [PMID: 35530077 PMCID: PMC9070046 DOI: 10.1039/c9ra05944j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/08/2019] [Indexed: 12/19/2022] Open
Abstract
In this study, we prepared polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) and investigated their antimicrobial activities. The antimicrobial effectiveness of PQAS–AgNPs on Bacillus subtilis (B. subtilis), and the effect of dose, pH, chloride ion and humic acid (HA) were studied. It was found that PQAS–AgNPs revealed excellent antimicrobial activity to B. subtilis, compared with polyvinylpyrrolidone-capped silver nanoparticles (PVP-AgNPs), which was the reference antimicrobial material. The positive surface, the antimicrobial activity of PQAS, and the synergistic antibacterial effect between PQAS and AgNPs contributed to the significant antibacterial superiority of PQAS–AgNPs. This study demonstrated that the impact of the dose of the material was positive and the microbiocidal efficacy of PQAS–AgNPs was stronger at lower pH. In addition, the antibacterial performance of PQAS–AgNPs decreased in the presence of Cl− and HA. Finally, in combination with the results of FCM and adenosine triphosphate (ATP) content, it was found that PQAS–AgNPs destroyed the respiratory chain of bacterial cells, reduced the synthesis of ATP, and destroyed the cell wall and cell membrane function. Polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) were synthesized, and they exhibited significant antibacterial capacity against Bacillus subtilis.![]()
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Affiliation(s)
- Jingyu Wang
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China +86-21-65986313 +86-21-65982691
| | - Zhanfang Ma
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Hongwei Li
- College of Surveying and Geo-Informatics, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Bojie Yuan
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
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15
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Yuan B, Sui M, Qin J, Wang J, Lu H. Effect of bicarbonate on physiochemical properties of silver nanoparticles and toxicity to Escherichia coli. J Colloid Interface Sci 2019; 539:297-305. [DOI: 10.1016/j.jcis.2018.12.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/28/2018] [Accepted: 12/14/2018] [Indexed: 11/29/2022]
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16
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Wang J, Sui M, Yuan B, Li H, Lu H. Inactivation of two Mycobacteria by free chlorine: Effectiveness, influencing factors, and mechanisms. Sci Total Environ 2019; 648:271-284. [PMID: 30118940 DOI: 10.1016/j.scitotenv.2018.07.451] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 06/01/2018] [Revised: 07/24/2018] [Accepted: 07/30/2018] [Indexed: 05/10/2023]
Abstract
Chlorination is one of the most widely used disinfection techniques, and the problem of "chlorine-resistant bacteria" (CRB) has attracted more attention recently. In this study, the deactivation of typical CRB in water, Mycobacterium fortuitum (M. fortuitum) and Mycobacterium mucogenicum (M. mucogenicum), by free chlorine was investigated with Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis) as the reference. The chlorination effectiveness of chlorine on M. fortuitum and M. mucogenicum and the effect of chlorine concentration, pH, and humic acid were studied. It was found that M. mucogenicum was more resistant to chlorine than M. fortuitum, both of which were much more resistant than E. coli and B. subtilis. The effect of disinfectant concentration on the inactivation efficiency was positive, whereas the influence of pH and humic acid was negative. The inactivation mechanisms were explored by analyzing the bacteria morphology, the destruction of cell membrane, the cell hydrophobicity, as well as total adenosine triphosphate (ATP), superoxide dismutase (SOD) activity. The slight destruction of the cell membrane was observed after deactivation with chlorine, and high hydrophobicity of the cell membrane combined with metabolic changes might lead to the chlorine tolerance of Mycobacteria.
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Affiliation(s)
- Jingyu Wang
- Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Minghao Sui
- Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Bojie Yuan
- Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Hongwei Li
- Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Hongtao Lu
- Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
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17
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Qin J, Sui M, Yuan B, Wang J, Yuan Z, Xu G. The decay of silver nanoparticles in preoxidation process. Sci Total Environ 2018; 619-620:1618-1627. [PMID: 29103649 DOI: 10.1016/j.scitotenv.2017.10.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/11/2017] [Accepted: 10/14/2017] [Indexed: 06/07/2023]
Abstract
To investigate the fate of metal-based nanoparticles in water oxidation treatment processes, the decay of Ag-NPs in the presence of three kinds of water treatment preoxidants, sodium hypochlorite (NaClO), hydrogen peroxide (H2O2) and potassium permanganate (KMnO4), was investigated in this work. Dissolution of Ag-NPs into silver ions (Ag+) was found to occur under exposure to NaClO, H2O2 and KMnO4. The morphology of Ag-NPs changed after reacting with NaClO, H2O2 and KMnO4. Factors affecting the decay of Ag-NPs, i.e., the dosage of oxidants, pH, the presence of humic acid, typical ions in water, and the size of the nanoparticles, were investigated. A higher dosage of oxidants, the presence of calcium ions, and lower size of Ag-NPs promoted the decay of Ag-NPs. The presence of humic acid and sulfide ions inhibited the decay of Ag-NPs. The decay of Ag-NPs under exposure to oxidants was significantly affected by the pH. The mechanism of the Ag-NPs in the presence of oxidants under different environmental conditions is also discussed.
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Affiliation(s)
- Jie Qin
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Bojie Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Jingyu Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Zhen Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
| | - Guangyi Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
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18
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Chu W, Yao D, Deng Y, Sui M, Gao N. Production of trihalomethanes, haloacetaldehydes and haloacetonitriles during chlorination of microcystin-LR and impacts of pre-oxidation on their formation. J Hazard Mater 2017; 327:153-160. [PMID: 28064143 DOI: 10.1016/j.jhazmat.2016.12.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 12/07/2016] [Accepted: 12/29/2016] [Indexed: 06/06/2023]
Abstract
Microcystins (MCs) in drinking water have gained much attention due to their adverse health effects. However, little is known about the impact of pre-oxidation in the formation of disinfection by-products (DBPs) during the downstream chlorination of MCs. The present study examined the formation of both carbonaceous and nitrogenous DBPs from chlorination of MC-LR (the most abundant MC species) and evaluated the impact of permanganate (PM), hydrogen peroxide (H2O2) and chlorine dioxide (ClO2) pre-oxidation on the DBP formation in chlorination. Higher yields of chloroform (CF) (maximum 43.0%) were observed from chlorination of MC-LR than free amino acids which are included in MC-LR structure. Chloral hydrate (CH) and dichloroacetonitrile (DCAN) were also produced from the chlorination of MC-LR, and the latter one was formed probably due to the chlorination of peptide bonds. A high pH favored the production of CF and CH, but inhibited the formation of DCAN. In the presence of bromide, bromo-DBPs could be produced to pose a threat. For example, 0.58μg/L of tribromoacetaldehyde was produced from the chlorination of MC-LR at Br-=200μg/L. PM and ClO2 pre-oxidation could both reduce the DBP formation from MC-LR. In contrast, H2O2 appeared not to significantly control the DBP formation.
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Affiliation(s)
- Wenhai Chu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Dechang Yao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yang Deng
- Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Naiyun Gao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Huang T, Sui M, Li J. Inactivation of E. coli by nano-Cu/MWCNTs combined with hydrogen peroxide. Sci Total Environ 2017; 574:818-828. [PMID: 27665442 DOI: 10.1016/j.scitotenv.2016.09.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/10/2016] [Accepted: 09/10/2016] [Indexed: 06/06/2023]
Abstract
This paper aims at the study on the antibacterial activity of nCu-MWCNTs combined with H2O2 against gram-negative bacteria Escherichia coli (E. coli). The antibacterial ability of nCu-MWCNTs/H2O2 was evaluated by traditional surface plating method, fluorescence and SEM imaging, and the effects of variables (contacting time, dose of nCu-MWCNTs and dose of H2O2) were investigated. By comparing with other five processes including H2O2, MWCNTs, nCu-MWCNTs, MWCNTs/H2O2 and nCu/H2O2, nCu-MWCNTs and H2O2 was proved to have superlative antimicrobial effectiveness against E. coli. The role of nano-Cu, MWCNTs and H2O2 in the antimicrobial activity of nCu-MWCNTs/H2O2 was clarified. The release of copper ions and formation of hydroxyl radicals (OH) both contributed the antibacterial ability of nCu-MWCNTs/H2O2 system. And MWCNTs as the support might be able to promote the electron transfer in nCu-MWCNTs for copper ion release.
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Affiliation(s)
- Tiandi Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
| | - Jiayi Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China.
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20
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Huang T, Sui M, Yan X, Zhang X, Yuan Z. Anti-algae efficacy of silver nanoparticles to Microcystis aeruginosa : Influence of NOM, divalent cations, and pH. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.09.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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21
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Zhang X, Sui M, Yan X, Huang T, Yuan Z. Mitigation in the toxicity of graphene oxide nanosheets towards Escherichia coli in the presence of humic acid. Environ Sci Process Impacts 2016; 18:744-750. [PMID: 27256116 DOI: 10.1039/c6em00256k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
GO nanosheets have been reported to show strong cytotoxicity towards Escherichia coli (E. coli) in aqueous solution. Natural organic matters (NOMs) in water may probably coat on the surface of GO nanosheets, which possibly influence its cytotoxicity. In this study, we illustrated how humic acid (HA), a ubiquitous NOM, mitigated the toxicity of GO nanosheets towards E. coli based on the cytotoxicity mechanism of GO nanosheets. Adsorption and cell viability tests proved that HA was adsorbed by GO nanosheets and decreased the toxicity of GO nanosheets towards E. coli. It was found that HA was adsorbed on the surface of GO nanosheets by polar groups, which prevented E. coli from contacting with GO nanosheets and weakened the toxicity of GO nanosheets. Besides, HA exerted an antioxidant role in maintaining the activity of the antioxidant enzyme and decreasing the ROS generation according to the results of oxidative stress experiments. The work revealed that HA relieved the toxicity of GO nanosheets and decreased the ecological risks induced by GO nanosheets.
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Affiliation(s)
- Xuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
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22
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Zhou L, Alvarez OG, Mazon CS, Chen L, Deng H, Sui M. The roles of conjugations of graphene and Ag in Ag3PO4-based photocatalysts for degradation of sulfamethoxazole. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00192k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three different photocatalysts, namely silver phosphate (Ag3PO4; AGP), Ag3PO4-graphene (AGP–G) and Ag/Ag3PO4–graphene (AAGP–G), were fabricated by a chemical precipitation approach. The mechanism of AAGP–G to degrade SMX was explained in detail.
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Affiliation(s)
- Li Zhou
- College of Environmental State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai
- China
- Key Laboratory of Yangtze River Water Environment
| | | | | | - Ling Chen
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
| | - Huiping Deng
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
| | - Minghao Sui
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
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23
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Sui M, Ye X, Ma J, Yu C, Zhao S, Liu X, Li L, Cao J, Jia X, Xie R. Epidemiology and risk factors for chronic kidney disease in Chinese patients with biopsy-proven lupus nephritis. Intern Med J 2015; 45:1167-72. [PMID: 26109241 DOI: 10.1111/imj.12840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 06/09/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Lupus nephritis (LN) is one of the most serious complications of systemic lupus erythematosus (SLE). It is the most common secondary glomerulonephritis leading to end-stage renal disease. AIM The purpose of this study is to evaluate the epidemiology and risk factors of chronic kidney disease (CKD) in Chinese patients with LN. METHODS Clinical, laboratory, renal histopathology, treatment and outcome data were collected and retrospectively analysed in LN patients with or without CKD. RESULTS At the end of the study, 94 (45.63%) patients were identified as having CKD among 206 individuals with renal biopsy-proven LN. Renal function, represented by serum creatinine and estimated glomerular filtration rate, was significantly decreased in the CKD patients (P = 0.008 and P < 0.001, respectively) at the time of the kidney biopsy. Compared with the non-CKD group, significantly increased proportions of hypertension (P < 0.001), serositis (P = 0.042) and anti-histone antibody positivity (P = 0.004) were detected in the CKD patients. Renal pathological activity and chronicity index scores were significantly increased in the CKD group (P < 0.001 for all). Finally, hypertension (hazard ratio (HR) 2.432, 95% confidence interval (CI) 1.575-3.754, P < 0.001), anti-histone antibody (HR 2.907, 95% CI 1.837-4.600, P < 0.001), and tubular atrophy (HR 1.248, 95% CI 1.007-1.547, P = 0.043) were independent risk factors for CKD. CONCLUSIONS Hypertension, anti-histone antibody and tubular atrophy are independent risk factors for CKD in Chinese LN patients.
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Affiliation(s)
- M Sui
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Ye
- Department of Haematology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Ma
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - C Yu
- Department of Cardiology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Zhao
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Liu
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L Li
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Cao
- Endemic Disease Control, Harbin Center for Disease Prevention and Control, Harbin, China
| | - X Jia
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - R Xie
- Department of Nephrology, First Affiliated Hospital of Harbin Medical University, Harbin, China
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Sui M, Wu R, Hu X, Zhang H, Jiang J, Yang Y, Niu J. Low prevalence of hepatitis B virus infection in patients with autoimmune diseases in a Chinese patient population. J Viral Hepat 2014; 21:925-9. [PMID: 25143225 DOI: 10.1111/jvh.12302] [Citation(s) in RCA: 13] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Hepatitis B is a very common communicable disease in China but the prevalence of hepatitis B virus (HBV) infection in patients with autoimmune diseases is unknown. We retrospectively investigated the prevalence of autoimmune diseases in patients with HBV infection. The medical records of 4060 patients with autoimmune or nonautoimmune diseases were reviewed. A positive test result for hepatitis B surface antigen (HBsAg) was used to indicate the presence of HBV infection. Autoimmune diseases included autoimmune hepatitis, primary biliary cirrhosis, systemic lupus erythematosus and ulcerative colitis. Nonautoimmune conditions included inguinal hernia, appendicitis and pregnant or postpartum women. The proportion of autoimmune disease patients who were HBsAg positive (2.24%) was significantly lower than that of nonautoimmune disease patients who were HBsAg positive (4.58%; P = 0.0014). Regarding hepatic autoimmune diseases, the positivity rates for HBsAg in autoimmune hepatitis patients (0.83%) and primary biliary cirrhosis patients (1.02%) were both significantly lower than in nonautoimmune patients (4.58%; P = 0.006 and 0.004, respectively). Patients with hepatic autoimmune disease were significantly less likely to be HBsAg positive (0.93%) than patients with non-hepatic autoimmune disease (3.99%; P = 0.002). Patients with autoimmune diseases, especially those with hepatic autoimmune disease, may more efficiently clear HBV than patients with nonautoimmune diseases.
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Affiliation(s)
- M Sui
- Department of Hepatology, First Hospital of Jilin University, Changchun, China
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Tan C, Gao N, Deng Y, Zhang Y, Sui M, Deng J, Zhou S. Degradation of antipyrine by UV, UV/H₂O₂ and UV/PS. J Hazard Mater 2013; 260:1008-1016. [PMID: 23892168 DOI: 10.1016/j.jhazmat.2013.06.060] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/06/2013] [Accepted: 06/21/2013] [Indexed: 06/02/2023]
Abstract
Degradation of antipyrine (AP) in water by three UV-based photolysis processes (i.e., direct UV, UV/H₂O₂, UV/persulfate (UV/PS)) was studied. For all the oxidation processes, the AP decomposition exhibited a pseudo-first-order kinetics pattern. Generally, UV/H₂O₂ and UV/PS significantly improved the degradation rate relevant to UV treatment alone. The pseudo-first-order degradation rate constants (kobs) were, to different degrees, affected by initial AP concentration, oxidant dose, pH, UV irradiation intensity, and co-existing chemicals such as humic acid, chloride, bicarbonate, carbonate and nitrate. The three oxidation processes followed the order in terms of treatment costs: UV/PS>UV>UV/H₂O₂ if the energy and chemical costs are considered. Finally, the AP degradation pathways in the UV/H₂O₂ and UV/PS processes are proposed. Results demonstrated that UV/H₂O₂ and UV/PS are potential alternatives to control water pollution caused by emerging contaminants such as AP.
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Affiliation(s)
- Chaoqun Tan
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai City 200092, China
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Sui M, Zhang L, Sheng L, Huang S, She L. Synthesis of ZnO coated multi-walled carbon nanotubes and their antibacterial activities. Sci Total Environ 2013; 452-453:148-154. [PMID: 23500408 DOI: 10.1016/j.scitotenv.2013.02.056] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 01/31/2013] [Accepted: 02/01/2013] [Indexed: 06/01/2023]
Abstract
ZnO coated multi-walled carbon nanotubes (ZnO/MWCNTs) were prepared and evaluated for their application potentials as an antimicrobial material for simultaneous concentrating and inactivating pathogenic bacteria. X-ray energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray photoelectron spectra (XPS) were used to characterize the ZnO/MWCNTs. Escherichia coli (E. coli) was employed as the target bacterium. Comparing with the raw and the purified MWCNTs (r-MWCNTs and p-MWCNTs), which have been reported to possess antibacterial activity towards E. coli, ZnO/MWCNTs exhibited stronger antibacterial ability. The deposited ZnO was suggested to play an important role in the bactericidal action of ZnO/MWCNTs, while, the r-MWCNTs and p-MWCNTs served as more like adsorbing materials for E. coli.
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Affiliation(s)
- Minghao Sui
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
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Sui M, Xing S, Sheng L, Huang S, Guo H. Heterogeneous catalytic ozonation of ciprofloxacin in water with carbon nanotube supported manganese oxides as catalyst. J Hazard Mater 2012; 227-228:227-236. [PMID: 22658829 DOI: 10.1016/j.jhazmat.2012.05.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 04/23/2012] [Accepted: 05/10/2012] [Indexed: 06/01/2023]
Abstract
Carbon nanotube-supported manganese oxides (MnOx/MWCNT) were used as catalysts to assist ozone in degrading ciprofloxacin in water. Manganese oxides were successfully loaded on multi-walled carbon nanotube surfaces by simply impregnating the carbon nanotube with permanganate solution. The catalytic activities of MnOx/MWCNT in ciprofloxacin ozonation, including degradation, mineralization effectiveness, and antibacterial activity change, were investigated. The presence of MnOx/MWCNT significantly elevated the degradation and mineralization efficiency of ozone on ciprofloxacin. The microbiological assay with a reference Escherichia coli strain indicated that ozonation with MnOx/MWCNT results in more effective antibacterial activity inhibition of ciprofloxacin than that in ozonation alone. The effects of catalyst dose, initial ciprofloxacin concentration, and initial pH conditions on ciprofloxacin ozonation with MnOx/MWCNT were surveyed. Electron spin resonance trapping was applied to assess the role of MnOx/MWCNT in generating hydroxyl radicals (HO) during ozonation. Stronger 5,5-dimethyl-1-pyrroline-N-oxide-OH signals were observed in the ozonation with MnOx/MWCNT compared with those in ozonation alone, indicating that MnOx/MWCNT promoted the generation of hydroxyl radicals. The degradation of ciprofloxacin was studied in drinking water and wastewater process samples to gauge the potential effects of water background matrix on MnOx/MWCNT catalytic ozonation.
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Affiliation(s)
- Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
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Sui M, Zhang H, Fan W. The role of estrogen and estrogen receptors in chemoresistance. Curr Med Chem 2012; 18:4674-83. [PMID: 21867480 DOI: 10.2174/092986711797379348] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Revised: 08/01/2011] [Accepted: 08/03/2011] [Indexed: 11/22/2022]
Abstract
Drug resistance is one of the major obstacles limiting the success of cancer chemotherapy. Biological mechanisms contributing to drug resistance may be present de novo and related to inherent features or may be raised after exposure to anticancer drugs. In recent years, both clinical observations and experimental studies suggested that steroid hormones and their receptors might also affect the therapeutic efficacy of antineoplastic drugs. Estrogens and estrogen receptors (ER) are well-known for their critical roles in the development and progression of breast tumors. It has long been known that breast tumors expressing ERα protein (ERα+) behave in a fundamentally different fashion than ERα-negative (ERα-) tumors with regard to their responses to hormonal therapy. Data obtained from both laboratory and clinical investigations suggested that some chemotherapeutic agents are clearly less effective in ERα+ tumors than ERα- tumors, although the mechanisms of ERα-mediated chemoresistance are not entirely clear. Moreover, recent studies from our laboratory and others demonstrated that the combination of antiestrogenic agents with chemotherapeutic drugs is of significant therapeutic benefit in ERα+ breast cancer over chemotherapy alone. In addition, the ERα-derived peptides, microRNAs specifically targeting ERα, as well as agents targeting estrogen-related receptors (ERRs) may hold promise to sensitize ERα+ breast tumors to chemotherapy. Considering that ERs are expressed in ˜ 65% of human breast cancer, the ERα-mediated chemoresistance has become a big challenge for clinical treatment. The hope to overcome this drug resistance relies on further clarification of specific pathways or molecules contributing to the resistance. More exhaustive and systematic studies are essential to reach deeper understandings on the underlying mechanisms and to develop novel approaches to sensitize ERα+ breast tumors to chemotherapy.
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Affiliation(s)
- M Sui
- Program of Innovative Cancer Therapeutics, First Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, China
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Abstract
ABSTRACTThe reaction at the interface between Al and amorphous C in Al/C multilayer thin films with modulation wavelengths of about 25nm and 125nm has been investigated by differential scanning calorimetry, X-ray diffraction, transmission electron microscopy/selected area electron diffraction and high resolution transmission electron microscopy. The reaction was found to take place in two steps. The first step onsets at about 300°C, and was identified as the diffusion of C into Al. The second step starts above 400°C, at a temperature strongly dependent on the modulation wavelength of the film, and is the formation of A14C3. The carbide has been observed to nucleate and grow inside the Al layers. The multilayer structure is preserved in the samples up to at least 550°C, and Al grains start to grow at or below 300°C.
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Zhang K, Gao N, Deng Y, Lin TF, Ma Y, Li L, Sui M. Degradation of bisphenol-A using ultrasonic irradiation assisted by low-concentration hydrogen peroxide. J Environ Sci (China) 2011; 23:31-36. [PMID: 21476337 DOI: 10.1016/s1001-0742(10)60397-x] [Citation(s) in RCA: 17] [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: 05/30/2023]
Abstract
This study investigated the degradation of bisphenol-A (BPA) by ultrasonic irradiation in the presence of different additives (H2O2, air bubbles and humic acid) under various operating conditions, i.e., ultrasonic frequency, power intensity and power density. The results demonstrated that the BPA degradation followed pseudo first-order kinetics under different experimental conditions. The optimum power intensities were 0.9, 1.8, and 3.0 W/cm2 at the frequencies of 400, 670, and 800 kHz, respectively. At the fixed frequency (800 kHz), the degradation rate of BPA was shown proportional to the increase of power density applied. With this manner, the BPA sonolysis could be facilitated at H2O2 dosage being lower than 0.1 mmol/L; while BPA degradation was hindered at H2O2 concentration in excess of 1 mmol/L. Additionally, BPA removal was shown to be inhibited by the presence of aeration and humic acid during ultrasonic irradiation. The present study suggested that the degradation rate of BPA assisted by ultrasonic irradiation was influenced by a variety of factors, and high BPA removal rate could be achieved under appropriate conditions.
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Affiliation(s)
- Kejia Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
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Ma J, Sui M, Zhang T, Guan C. Effect of pH on MnOx/GAC catalyzed ozonation for degradation of nitrobenzene. Water Res 2005; 39:779-786. [PMID: 15743622 DOI: 10.1016/j.watres.2004.11.020] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2004] [Revised: 09/06/2004] [Accepted: 11/11/2004] [Indexed: 05/24/2023]
Abstract
The effect of pH on MnO(x)/GAC heterogeneous catalytic ozonation was investigated. Nitrobenzene was used as a model refractory organic pollutant. It was found that in MnO(x)/GAC catalytic ozonation, the degradation efficiency of nitrobenzene was higher under low pH conditions (pH 2.74-3.52) than that under high pH conditions (pH 6.72-9.61). This result was different from the case of ozonation alone, in which higher pH had positive effect on the degradation of nitrobenzene due to the formation of hydroxyl radical. In the presence of MnO(x)/GAC catalyst, ozone decomposition was accelerated, and higher pH condition favored ozone decomposition. It was assumed that hydroxyl radicals might not be the dominating active species in the catalytic oxidation, for the presence of t-butanol did not have any influence on MnO(x)/GAC heterogeneous catalytic ozonation. Adsorption of organic micropollutants on MnO(x)/GAC catalyst was an important step and would have direct influence on the effectiveness of catalytic oxidation. It was assumed that the organic pollutants might be further decomposed on the surface of catalyst.
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Affiliation(s)
- Jun Ma
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2627, 202 Haihe Road, Harbin 150090, PR China.
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Fan W, Zhu X, Dziadyk J, Sui M. 570 In vitro and in vivo characterizations of naturally occurring BBls in reversal of p-gp mediated multidrug resistance. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80578-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Fu H, Cheng Y, Ku W, Sui M, Hsia K, Tsai L, Chak K, Yuan HS. Bacterial offense and defense strategies using nuclease toxins. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302095922] [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: 11/10/2022] Open
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Abstract
[reaction: see text] Hexacarbonyl dicobalt complexes of propargylic acetals undergo Lewis acid catalyzed crotylation reactions with enhanced levels of diastereoselectivity (dr 6 to >20:1, syn/anti) while efficiently producing stereochemically well-defined homoallylic ethers. These results are in contrast to uncomplexed propargylic acetals, which undergo the crotylation reactions with low selectivity (dr < 2:1, syn/anti). After removal of the cobalt complex, the reactions afford propargylic ethers in high yields.
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Affiliation(s)
- M Sui
- Department of Chemistry, Metcalf Center for Science and Engineering, 590 Commonwealth Avenue, Boston University, Boston, MA 02215, USA
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Gan W, Sui M, He Y. [Determination of cadmium in soil slurry samples by GFAAS using ammonium oxalate as disperstant]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:861-863. [PMID: 15822318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A method for the determination of trace cadmium in soil slurry samples by GFAAS was optimized. The factors that influence the performances of cadmium at different chemical modifier were investigated. The effect of background has also been studied. It is found that the slurry of soil samples was most stable with ammonium oxalate as disperstant. The results show that the determination of trace cadmium in soil slurry samples could performed.
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Affiliation(s)
- W Gan
- Department of Chemistry, University of Science and Technology of China, 230026 Hefei
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