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Li WT, Huang W, Yang Y, Peng F. [Advances on extracellular vesicles derived from dead cells]. Zhonghua Nei Ke Za Zhi 2024; 63:422-426. [PMID: 38561291 DOI: 10.3760/cma.j.cn112138-20231024-00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Affiliation(s)
- W T Li
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - W Huang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - Y Yang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
| | - F Peng
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Jiangsu Provincial Key Laboratory of Critical Care Medicine, Nanjing 210009, China
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Zhang H, Yang YF, Yang C, Yang YY, He XH, Chen C, Song XL, Ying LL, Wang Y, Xu LC, Li WT. A Novel Interpretable Radiomics Model to Distinguish Nodular Goiter From Malignant Thyroid Nodules. J Comput Assist Tomogr 2024; 48:334-342. [PMID: 37757802 DOI: 10.1097/rct.0000000000001544] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
OBJECTIVES The purpose of this study is to inquire about the potential association between radiomics features and the pathological nature of thyroid nodules (TNs), and to propose an interpretable radiomics-based model for predicting the risk of malignant TN. METHODS In this retrospective study, computed tomography (CT) imaging and pathological data from 141 patients with TN were collected. The data were randomly stratified into a training group (n = 112) and a validation group (n = 29) at a ratio of 4:1. A total of 1316 radiomics features were extracted by using the pyradiomics tool. The redundant features were removed through correlation testing, and the least absolute shrinkage and selection operator (LASSO) or the minimum redundancy maximum relevance standard was used to select features. Finally, 4 different machine learning models (RF Hybrid Feature, SVM Hybrid Feature, RF, and LASSO) were constructed. The performance of the 4 models was evaluated using the receiver operating characteristic curve. The calibration curve, decision curve analysis, and SHapley Additive exPlanations method were used to evaluate or explain the best radiomics machine learning model. RESULTS The optimal radiomics model (RF Hybrid Feature model) demonstrated a relatively high degree of discrimination with an area under the receiver operating characteristic curve (AUC) of 0.87 (95% CI, 0.70-0.97; P < 0.001) for the validation cohort. Compared with the commonly used LASSO model (AUC, 0.78; 95% CI, 0.60-0.91; P < 0.01), there is a significant improvement in AUC in the validation set, net reclassification improvement, 0.79 (95% CI, 0.13-1.46; P < 0.05), and integrated discrimination improvement, 0. 20 (95% CI, 0.10-0.30; P < 0.001). CONCLUSION The interpretable radiomics model based on CT performs well in predicting benign and malignant TNs by using quantitative radiomics features of the unilateral total thyroid. In addition, the data preprocessing method incorporating different layers of features has achieved excellent experimental results. CLINICAL RELEVANCE STATEMENT As the detection rate of TNs continues to increase, so does the diagnostic burden on radiologists. This study establishes a noninvasive, interpretable and accurate machine learning model to rapidly identify the nature of TN found in CT.
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Affiliation(s)
- Hao Zhang
- From the Department of Interventional Radiology, Fudan University Shanghai Cancer Center
| | | | - Chao Yang
- Department of Radiology, The First Affiliated Hospital of Dalian Medical University
| | | | | | | | - Xue-Lin Song
- Department of Radiology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
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Chen YL, Yang XN, Liu YL, Li WT, Huo LJ. Ocular decompression retinopathy after phacoemulsification in a patient with primary acute angle-closure glaucoma undergoing chemotherapy. Int J Ophthalmol 2024; 17:397-400. [PMID: 38371269 PMCID: PMC10827622 DOI: 10.18240/ijo.2024.02.25] [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: 05/16/2023] [Accepted: 08/28/2023] [Indexed: 02/20/2024] Open
Affiliation(s)
- Yi-Lin Chen
- Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Xiao-Nan Yang
- Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Ying-Li Liu
- Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Wen-Tao Li
- Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
| | - Li-Jun Huo
- Department of Ophthalmology, the First Affiliated Hospital, School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
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Luo FS, Zhao X, Li F, Zhang YH, Li WT, Zhang PD. Integrating ecology, physiology and transcriptomics reveals the response of Zostera marina to rusting of iron transplantation frame. Mar Pollut Bull 2024; 199:115977. [PMID: 38194824 DOI: 10.1016/j.marpolbul.2023.115977] [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: 08/29/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 01/11/2024]
Abstract
Frame Transplantation System (FTS) is considered an efficient method for seagrass restoration, but the effect of the rusting of iron frame on seagrass restoration remains unclear. We transplanted Zostera marina plants using iron FTS treated with fluorocarbon paint (painted treatment, PT) and traditional unpainted iron FTS (unpainted treatment, UT) under controlled mesocosm conditions for 24 days. Our results showed that the survival rate of Z. marina under the UT was significantly 31.2 % lower than that of the plants under the PT. Soluble sugar content in Z. marina rhizomes under the UT was significantly 2.19 times higher than that of the plants under the PT. Transcriptome analysis revealed differentially expressed genes (DEGs) involved in photosynthesis, metabolism and signal transduction functions. The results provide valuable data that could prove helpful in the development of efficient restoration techniques for Z. marina beds.
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Affiliation(s)
- Fan-Shu Luo
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Xiang Zhao
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Fan Li
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resources and Environment Research Institute, Yantai, People's Republic of China
| | - Yan-Hao Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Wen-Tao Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Pei-Dong Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China.
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Wang S, Zhu XM, Hong SD, Zheng SJ, Wang YB, Huang XC, Tian YC, Li WT, Lu YZ, Wu J, Zeng RJ, Dai K, Zhang F. Unveiling the Occurrence and Non-Negligible Role of Amino Sugars in Waste Activated Sludge Fermentation by an Enriched Chitin-Degradation Consortium. Environ Sci Technol 2024; 58:1966-1975. [PMID: 38153028 DOI: 10.1021/acs.est.3c09302] [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] [Indexed: 12/29/2023]
Abstract
Polysaccharides in extracellular polymeric substances (EPS) can form a hybrid matrix network with proteins, impeding waste-activated sludge (WAS) fermentation. Amino sugars, such as N-acetyl-d-glucosamine (GlcNAc) polymers and sialic acid, are the non-negligible components in the EPS of aerobic granules or biofilm. However, the occurrence of amino sugars in WAS and their degradation remains unclear. Thus, amino sugars (∼6.0%) in WAS were revealed, and the genera of Lactococcus and Zoogloea were identified for the first time. Chitin was used as the substrate to enrich a chitin-degrading consortium (CDC). The COD balances for methane production ranged from 83.3 and 95.1%. Chitin was gradually converted to oligosaccharides and GlcNAc after dosing with the extracellular enzyme. After doing enriched CDC in WAS, the final methane production markedly increased to 60.4 ± 0.6 mL, reflecting an increase of ∼62%. Four model substrates of amino sugars (GlcNAc and sialic acid) and polysaccharides (cellulose and dextran) could be used by CDC. Treponema (34.3%) was identified as the core bacterium via excreting chitinases (EC 3.2.1.14) and N-acetyl-glucosaminidases (EC 3.2.1.52), especially the genetic abundance of chitinases in CDC was 2.5 times higher than that of WAS. Thus, this study provides an elegant method for the utilization of amino sugar-enriched organics.
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Affiliation(s)
- Shuai Wang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Xiao-Mei Zhu
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Si-Di Hong
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Si-Jie Zheng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Yi-Bo Wang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Xing-Chen Huang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Yong-Ze Lu
- School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Jianrong Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Raymond Jianxiong Zeng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Kun Dai
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fang Zhang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
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Li C, Zhu L, Li WT, Li D. Microplastics in the seagrass ecosystems: A critical review. Sci Total Environ 2023; 902:166152. [PMID: 37567296 DOI: 10.1016/j.scitotenv.2023.166152] [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: 06/09/2023] [Revised: 07/20/2023] [Accepted: 08/07/2023] [Indexed: 08/13/2023]
Abstract
Marine microplastic (MP) pollution represents a global environmental issue that has ignited considerable apprehension within the international community. Seagrass beds, which serve as nearshore marine ecosystems, have emerged as focal points of plastic and MP contamination due to the pronounced density of anthropogenic activities and the hydrological mitigating effects of submerged vegetation. Nevertheless, our comprehension of MPs within seagrass ecosystems remains constrained. In this study, we employed bibliometric analyses and comprehensive data exploration to summarize the historical progression of the development, pivotal areas of interest, and research deficiencies, followed by proposing future research directions for MP pollution in seagrass beds. The 37 selected papers were sourced from the Web of Science Core Collection scientific database as of December 31st, 2022. Based on the current evaluation, MPs are ubiquitously discovered within seagrass canopies, sediments, and marine organisms, while less than 15 % of seagrass species worldwide have been investigated. Moreover, methodological inconsistencies in sampling, processing and visualization between studies hindered the fusion and comparison of data. MPs in upper sediments and seagrass blades were the most widely investigated, with an average abundance of 263.4 ± 309.2 n/kg and 0.09 ± 0.03 n/blade. In all environmental compartments, the prevalent forms of MPs comprise fibrous and fragmented particles, encompassing the dominant polymers such as polypropylene, polyethylene and polyethylene terephthalate. However, the source of MPs in seagrass beds based on MP characteristics and local hydrodynamics has not been comprehensively analyzed in previous studies. The evidence for MPs acting as pollutants and contaminant carries impacting the growth and decline of seagrass is also weak. Currently, the precise implications of MPs on submerged vegetation, organisms, and the broader seagrass ecosystem remain inconclusive. However, considering the persistent accumulation of MPs, it is imperative to explore the ecological hazards they may pose within the foreseeable future.
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Affiliation(s)
- Changjun Li
- Ocean School, Yantai University, Yantai, China.
| | - Lixin Zhu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China; Department of Marine and Environmental Science, Northeastern University, Boston, MA, USA
| | - Wen-Tao Li
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
| | - Daoji Li
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China
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Liu HW, He P, Li WT, Sun W, Shi K, Wang YQ, Mo QK, Zhang XY, Zhu SF. Catalyst-Oriented Design Based on Elementary Reactions (CODER) for Triarylamine Synthesis. Angew Chem Int Ed Engl 2023; 62:e202309111. [PMID: 37698233 DOI: 10.1002/anie.202309111] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 09/13/2023]
Abstract
Recently, the application of computational tools to the rational design of catalysts has received considerable attention, but progress has been limited by the reliance on databases and because mechanistic data have been almost neglected. Herein, we report a new strategy for catalyst design, designated catalyst-oriented design based on elementary reactions (CODER), which fully utilizes mechanistic data, combines the strengths of computational tools and researcher experience. CODER enabled the development of extremely efficient Pd catalysts for C-N coupling, which markedly improved the efficiency of the synthesis of widely used triarylamine optoelectronic materials by enhancing the turnover numbers (up to 340000) to 1-3 orders of magnitude towards literature values.
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Affiliation(s)
- Hua-Wei Liu
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Peng He
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Wen-Tao Li
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Wei Sun
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Kai Shi
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - You-Qin Wang
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Qian-Kun Mo
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Xin-Yu Zhang
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
| | - Shou-Fei Zhu
- Frontiers Science Center for New Organic Matters, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94th Weijin Road, Tianjin, 300071, China
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Wei Y, Yang C, Wei J, Li W, Qin Y, Liu G. Identification and verification of microtubule associated genes in lung adenocarcinoma. Sci Rep 2023; 13:16134. [PMID: 37752167 PMCID: PMC10522656 DOI: 10.1038/s41598-023-42985-3] [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: 06/09/2023] [Accepted: 09/17/2023] [Indexed: 09/28/2023] Open
Abstract
Associated with high morbidity and mortality, lung adenocarcinoma (LUAD) is lacking in effective prognostic prediction and treatment. As chemotherapy drugs commonly used in clinics, microtubule-targeting agents (MTAs) are limited by high toxicity and drug resistance. This research aimed to analyze the expression profile of microtubule-associated genes (MAGs) in LUAD and explore their therapy efficiency and impact on prognosis. Key MAGs were identified as novel molecular targets for targeting microtubules. The LUAD project in The Cancer Genome Atlas (TCGA) database was used to identify differently expressed MAGs. On the one hand, a microtubule-related prognostic signature was constructed and validated, and its links with clinical characteristics and the immune microenvironment were analyzed. On the other hand, hub MAGs were obtained by a protein-protein interaction (PPI) network. Following the expression of hub MAGs, patients with LUAD were classified into two molecular subtypes. A comparison was made of the differences in half-maximal drug inhibitory concentration (IC50) and tumor mutational burden (TMB) between groups. In addition, the influence of MAGs on the anticancer efficacy of different therapies was explored. MAGs, which were included in both the prognosis signature and hub genes, were considered to have great value in prognosis and targeted therapy. They were identified by quantitative real-time polymerase chain reaction (qRT-PCR). A total of 154 differently expressed MAGs were discovered. For one thing, a microtubule-related prognostic signature based on 14 MAGs was created and identified in an external validation cohort. The prognostic signature was used as an independent prognostic factor. For another, 45 hub MAGs were obtained. In accordance with the expression profile of 45 MAGs, patients with LUAD were divided into two subtypes. Distinct differences were observed in TMB and IC50 values of popular chemotherapy and targeted drugs between subtypes. Finally, five genes were included in both the prognosis signature and hub genes, and identified by qRT-PCR. A microtubule-related prognosis signature that can serve as an independent prognostic factor was constructed. Microtubule subtype influenced the efficacy of different treatments and could be used to guide therapy selection. In this research, five key MAGs, including MYB proto-oncogene like 2 (MYBL2), nucleolar and spindle-associated protein 1 (NUSAP1), kinesin family member 4A (KIF4A), KIF15 and KIF20A, were verified and identified. They are promising biomarkers and therapeutic targets in LUAD.
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Affiliation(s)
- YuHui Wei
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - CaiZhen Yang
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - JinMei Wei
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - WenTao Li
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - YuanWen Qin
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - GuangNan Liu
- Department of Respiratory and Critical Care, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.
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Xing TJ, Zhao KY, Li WT, Wang LJ, Lu FM. [Association between HBV viral load and severity of liver inflammation in patients with chronic hepatitis B virus infection]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:954-960. [PMID: 37872091 DOI: 10.3760/cma.j.cn501113-20230820-00061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Objective: To explore the relationship and dynamic changes between virological markers and hepatic pathological damage due to host anti-hepatitis B virus (HBV) immunity in the natural course of disease in chronic HBV infected patients. Methods: Two hundred and thirty-eight adult chronic HBV-infected patients who underwent liver biopsy from January 2016 to June 2022 in Taizhou Hospital, Zhejiang Province, were retrospectively selected. General clinical data such as age, gender, platelets, ALT, AST, albumin, HBV DNA, qHBsAg, HBeAg, and liver pathology diagnostic indexes such as the grade of liver necroinflammation and liver fibrotic stages of the patients were collected. The patients were grouped according to HBeAg status, and subgrouped according to different grades of liver necroinflammation and different HBV DNA loads. Statistical analyses were performed to compare the differences in HBV virologic marker levels between the groups, and the correlation between them and the indicators of hepatic inflammatory injury, such as ALT,AST, and the grade of liver necroinflammation in the patients. Results: The levels of HBV virological markers in HBeAg-positive patients with moderate or higher liver necroinflammatory grade (G≥2) were significantly lower than those with mild (no) liver necroinflammatory grade (G < 2) (P < 0.01); whereas the opposite trend was observed in HBeAg-negative patients, with the levels of HBV DNA, and qHBsAg in the G≥2 subgroup being significantly higher than those in the G < 2 subgroup (P < 0.01). Correspondingly, HBV DNA level and qHBsAg showed weak to moderately strong negative correlation with liver necroinflammatory grade and AST which was an indicator of hepatic inflammatory injury in HBeAg-positive patients (P < 0.05); whereas in HBeAg-negative patients, they showed weak to moderately strong positive correlation with hepatic inflammatory activity and ALT, AST (P < 0.001), in which qHBsAg showed only a weak positive correlation with patients' liver necroinflammatory grade (P = 0.003). Further subgroup analyses of HBeAg-positive patients according to whether the HBV DNA level was > 2×10(6) IU/ml showed weak to moderate negative correlations between HBV virological markers and liver necroinflammatory grade as well as ALT and AST in the subgroup of patients with HBV DNA > 2×10(6) IU/ml (P < 0.05); however, the negative correlation disappeared in patients who were still HBeAg positive and had HBV DNA ≤ 2×10(6) IU/ml. Moreover, HBV DNA and ALT, HBeAg and AST showed moderate positive correlation (P < 0.05). Conclusion: We speculate that the activation of host anti-HBV immunity can efficiently inhibit HBV replication by targeting the infected hepatocytes, but only in the early phase of disease progression in HBeAg positive patients with HBV DNA high (> 2×10(6) IU/ml).
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Affiliation(s)
- T J Xing
- Department of Infectious Diseases, Taizhou Hospital of Zhejiang Province, Linhai 317000, China
| | - K Y Zhao
- Hepatology Institute, Peking University People's Hospital, Beijing 100044, China
| | - W T Li
- Department of Infectious Diseases, the First Hospital of Jiaxing, Jiaxing 314001, China
| | - L J Wang
- Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - F M Lu
- Hepatology Institute, Peking University People's Hospital, Beijing 100044, China Department of Microbiology and Infectious Disease Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
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Li WT, Zhang Q, Hu MY, Zhu SF. Iron-Catalyzed Alkene Hydroalumination. Org Lett 2023. [PMID: 37487010 DOI: 10.1021/acs.orglett.3c02044] [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: 07/26/2023]
Abstract
Hydroalumination of olefins generally gives thermodynamically controlled anti-Markovnikov addition selectivity in literatures. In this paper, a highly Markovnikov hydroalumination of aromatic terminal alkenes was realized to prepare various new benzylaluminum complexes by using the well-defined 2,9-diaryl-1,10-phenanthroline modified iron complex as the catalyst and commercially available DIBAL-H as the aluminum hydride reagent. This is the first ironcatalyzed alkene hydroalumination, and the regioselectivity observed in this study is different from the related reactions reported in the literatures.
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Affiliation(s)
- Wen-Tao Li
- Frontiers Science Center of Organic Matters, The State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qiao Zhang
- Frontiers Science Center of Organic Matters, The State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Meng-Yang Hu
- Frontiers Science Center of Organic Matters, The State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- Frontiers Science Center of Organic Matters, The State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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Wang Y, Wang GZ, Chen C, Huang HZ, Wang YH, He XH, Xu LX, Xu LC, Li WT. Exploration of the impact of multimode thermal therapy versus radiofrequency ablation on CD8 + T effector cells of liver malignancies based on single cell transcriptomics. Front Immunol 2023; 14:1172362. [PMID: 37334386 PMCID: PMC10272448 DOI: 10.3389/fimmu.2023.1172362] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/03/2023] [Indexed: 06/20/2023] Open
Abstract
Introduction Multimode thermal therapy (MTT) is an innovative interventional therapy developed for the treatment of liver malignancies. When compared to the conventional radiofrequency ablation (RFA), MTT typically offers improved prognosis for patients. However, the effect of MTT on the peripheral immune environment and the mechanisms underlying the enhanced prognosis have yet to be explored. The aim of this study was to further investigate the mechanisms responsible for the difference in prognosis between the two therapies. Methods In this study, peripheral blood samples were collected from four patients treated with MTT and two patients treated with RFA for liver malignancies at different time points before and after the treatment. Single cell sequencing was performed on the blood samples to compare and analyze the activation pathways of peripheral immune cells following the MTT and RFA treatment. Results There was no significant effect of either therapy on the composition of immune cells in peripheral blood. However, the differential gene expression and pathway enrichment analysis demonstrated enhanced activation of T cells in the MTT group compared to the RFA group. In particular, there was a remarkable increase in TNF-α signaling via NF-κB, as well as the expression of IFN-α and IFN-γ in the CD8+ effector T (CD8+ Teff) cells subpopulation, when compared to the RFA group. This may be related to the upregulation of PI3KR1 expression after MTT, which promotes the activation of PI3K-AKT-mTOR pathway. Conclusion This study confirmed that MTT could more effectively activate peripheral CD8+ Teff cells in patients compared with RFA and promote the effector function, thus resulting in a better prognosis. These results provide a theoretical basis for the clinical application of MTT therapy.
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Affiliation(s)
- Ying Wang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Guang-Zhi Wang
- Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
- Department of Medical Imaging Center, Affiliated Hospital, Weifang Medical University, Weifang, Shandong, China
| | - Chao Chen
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Hao-Zhe Huang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yao-Hui Wang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xin-Hong He
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Lisa X. Xu
- Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Li-Chao Xu
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wen-Tao Li
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
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Liu YF, Liu ZY, Li WT, Wang P, Wang XY, Di R, He XY, Chu MX. Effect of Melatonin on ATG2B-mediated Autophagy Regulation in Sheep Granulosa Cells with Different Fec B Genotypes. J Pineal Res 2023:e12890. [PMID: 37226314 DOI: 10.1111/jpi.12890] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/23/2023] [Accepted: 05/10/2023] [Indexed: 05/26/2023]
Abstract
Melatonin (MLT) protects cells by reducing reactive oxygen species (ROS) levels, which are key for inducing cellular autophagy. The aim of this study was to investigate the molecular mechanisms underlying MLT regulation of autophagy in granulosa cells (GCs) with BMPR-1B homozygous (FecB BB) and wild type (FecB ++) mutations. GCs collected from small-tailed Han sheep with different FecB genotypes were typed using a TaqMan probe assay, and autophagy levels were found to be significantly higher in GCs with FecB BB than the levels in those with FecB ++. Autophagy-related 2 homolog B (ATG2B) was associated with cell autophagy and was highly expressed in GCs with the FecB BB genotype in small-tailed Han sheep. Overexpression of ATG2B in the GCs of sheep with both FecB genotypes promoted GC autophagy, and the contrary was observed after the inhibition of ATG2B expression. Subsequently, treatment of GCs with different genotypes of FecB and MLT revealed a significant decrease in cellular autophagy and an increase in ATG2B expression. Addition of MLT to GCs with inhibited ATG2B expression revealed that MLT could protect GCs by decreasing ROS levels, especially in GCs with FecB ++ genotype. In conclusion, this study determined that autophagy levels were significantly higher in sheep GCs with FecB BB genotype than the levels in those with FecB ++ genotype, which may have contributed to the difference in lambing numbers between the two FecB genotypes. Autophagy was regulated by ATG2B and was able to protect GCs by reducing the high levels of ROS produced following inhibition of ATG2B through the addition of MLT in vitro. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yu-Fang Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Zi-Yi Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Wen-Tao Li
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Peng Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiang-Yu Wang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Ran Di
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiao-Yun He
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Ming-Xing Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
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Cai MH, Tian YC, Li AM, Li Y, Han YZ, Ji WX, Zhou Q, Li J, Li WT. Unraveling the evolution of dissolved organic matter in full-scale A/A/O wastewater treatment process using size exclusion chromatography with PARAFAC and nonnegative matrix factorization analysis. Water Res 2023; 235:119879. [PMID: 36934541 DOI: 10.1016/j.watres.2023.119879] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 12/04/2022] [Revised: 02/26/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
Changes in spectral features and molecular weight (MW) of dissolved organic matter (DOM) along the A/A/O processes in eight full-scale wastewater treatment plants (WWTPs) were characterized using size exclusion chromatography with a diode array detector, a fluorescence detector and an organic carbon detector in tandem (SEC-DAD-FLD-OCD) as well as bulk water quality parameters. The parallel factor (PARAFAC) and the nonnegative matrix factorization (NMF) analyses have been effectively applied to the postprocessing of SEC-FLD fingerprints and SEC-OCD chromatograms, respectively. Individual SEC-FLD-PARAFAC or SEC-OCD-NMF components may span a broad range of MW, indicating that these SEC fractions within the same component were cognate and varied coherently across the dataset samples. The SEC-FLD-PARAFAC modeling and SEC-OCD-NMF analysis have clearly and concisely presented that the dramatic decreases of dissolved organic carbon, UV absorbance at 254 nm and protein-like fluorescence at Ex280/Em350 nm in the anaerobic process were primarily associated with the degradation of the large MW proteinaceous and polysaccharide-like biopolymers. It has also revealed that fluorescence of humic acid-like fractions increased significantly during the anaerobic process, but fluorescence of fulvic acid-like and humic substances' building blocks decreased slightly. Laboratory experiments further confirmed the presence of the humification process in anaerobic processes, and the formation of humic acid-like fluorophores may be associated with carbohydrate metabolism. The combination of SEC-FLD-PARAFAC and SEC-OCD-NMF helped to establish the links between changes in bulk water quality parameters and the evolution of SEC MW fractions, which provides a more in-depth insight into wastewater DOM treatability and enables the optimization of wastewater treatment processes.
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Affiliation(s)
- Min-Hui Cai
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 210094 Nanjing, China.
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Qing Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Jun Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, 210023 Nanjing, China.
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Chen C, Wang Y, Zhao Q, Li GD, Wang YH, Xu LC, Huang HZ, Song G, Li WT, He XH. E3 Ubiquitin Ligase MARCH8 Promotes Pancreatic Cancer Growth and Metastasis by Activating STAT3 via Degradation of PTPN4. Pancreas 2023; 52:e224-e234. [PMID: 37747937 DOI: 10.1097/mpa.0000000000002244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
OBJECTIVE The role E3 ubiquitin ligase membrane-associated RING-CH 8 (MARCH8) has not been studied in pancreatic cancer. METHOD Pancreatic cancer cell lines and the normal pancreatic cells were tested in vitro studies and male athymic nude mice were tested in vivo studies. Measuring cell viability by Cell Counting Kit-8 assay (CCK8), 5-ethynyl-2'- deoxyuridine (Edu) staining, and colony formation assay. Wound healing assay was implemented for cell migration and Transwell assay was performed for cell invasion to evaluate the histological status by hematoxylin and eosin staining and to detect the protein ubiquitination by ubiquitination assay. The protein expression was determined by immunohistochemistry staining and western blotting, and mRNA expression was measured by quantitative reverse transcription polymerase chain reaction. RESULT The expression of MARCH8 was increased whereas PTPN4 was decreased in pancreatic cancer cells. Overexpression of MARCH8 promoted the growth, migration, and invasion of cells, and knockdown of PTPN4 had the similar effects both in vitro and in vivo. MARCH8 promoted PTPN4 protein degradation through ubiquitination. Moreover, PTPN4 suppressed the transcription activities of STAT3 by impairing the level of pSTAT3 (705), while inhibition of PTPN4 activated phosphorylation of STAT3. CONCLUSIONS MARCH8 promoted pancreatic cancer growth and invasion through mediating the degradation of PTPN4 and activated the phosphorylation of STAT3.
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Jiang BC, Tian YC, Li AM, Han YZ, Wu ZT, Lu C, Song HO, Ji R, Li WT, Korshin GV. Changes of dissolved organic matter fractions and formation of oxidation byproducts during electrochemical treatment of landfill leachates: Development of spectroscopic indicators for process optimization. Water Res 2023; 232:119702. [PMID: 36758356 DOI: 10.1016/j.watres.2023.119702] [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: 12/01/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Electrochemical oxidation (EO) is an attractive option for treatment of dissolved organic matter (DOM) in landfill leachate but concerns remain over the energy efficiency and formation of oxidation byproducts ClO3- and ClO4-. In this study, EO treatment of landfill leachates was carried out using representative active and nonactive anode materials, cell configurations and current densities. Size exclusion chromatograms coupled with 2D synchronous and asynchronous correlation analysis showed that the sensitivity of DOM fractions to EO degradation was dependent on the anode material. The nonactive boron-doped diamond (BDD) anode demonstrated the best performance for DOM oxidation. The humic acid-like fraction (HA, 2.5-20 kDa) predominated the visible absorbance of landfill leachates at λ ≥400 nm, and it generally had the highest reaction rates except the occurrence of the pH-induced denaturation and precipitation of the proteinaceous biopolymer fraction (BP, >20 kDa). During the EO treatment of landfill leachate with BDD anode, the UV absorbance spectra of landfill leachates at wavelengths <400 nm were affected by the formation of free chlorine. Instead, the decrease of Abs420 was found to be a good indicator of the shift of the oxidation from predominantly HA fraction to the proteinaceous BP fraction. The behavior of the Abs420 parameter was also indicative of the transition from the energy-efficient oxidation of DOM to the dominance of side reactions of chlorine evolution and the subsequent formation of ClO3- and ClO4-. These findings suggest that the EO treatment of landfill leachate can be optimized by adjusting the current density with feedback signals from the online monitoring of Abs420, to achieve a trade-off between degradation of DOM and control of ClO3- and ClO4-.
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Affiliation(s)
- Bi-Cun Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Nanjing Innovation Center for Environmental Protection Industry Co., Ltd., Nanjing, 211102, PR China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ze-Tao Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chang Lu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hai-Ou Song
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; School of the Environment, Nanjing Normal University, Nanjing 210023, China
| | - Rong Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Gregory V Korshin
- Department of Civil and Environmental Engineering, University of Washington, Box 352700, Seattle, WA 98195-2700, USA
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Xu CY, Li WT, Tian YH. [Correlation analysis between prenatal exposure of per-/polyfluoroalkyl compounds and neonatal outcome]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:362-370. [PMID: 36922171 DOI: 10.3760/cma.j.cn112150-20220503-00435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: To investigate the correlation between the prenatal exposure of per-/polyfluoroalkyl substances (PFASs) and the neonatal outcome. Methods: A total of 506 maternal infant cohort samples were collected in Hangzhou, Zhejiang province from 2020 to 2021. The exposure levels of seven PFASs in maternal serum before delivery were detected by solid-phase extraction-ultra performance liquid chromatography tandem mass spectrometry. Multivariable linear regression model was used to analyze the influence of prenatal exposure of PFASs on birth weight, birth length and Apgar score. Results: The maternal age, prenatal body mass index and gestation age were (31.3±4.3) years old, (26.7±3.2) kg/m2 and (265.0±28.3) days, respectively. The birth weight, birth length and scores of Apgar-1 and Apgar-5 were (3.1±0.8) kg, (49.3±2.9) cm, (9.88±0.47) points and (9.99±0.13) points, respectively. PFASs were widely distributed in maternal serum, with the highest concentration of (18.453±19.557) ng/ml, (6.756±9.379) ng/ml and (5.057±8.555) ng/ml for perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS) and 6∶2 chlorinated polyfluorinated ether sulfonate (Cl-PFESA), respectively. Maternal age, parity and delivery mode were associated with the exposure level of PFASs (P<0.05). Subgroup analysis showed that PFOS had negative effects on birth weight (β=-0.958), birth length (β=-0.073) and Apgar-5 score (β=-0.288) for neonates in the low birth weight (LBW) group. 6∶2 Cl-PFESA and 8∶2 Cl-PFESA inhibited the birth weight (β=-0.926; β=-0.552) and length (β=-0.074; β=-0.045) of newborn in the LBW group. In addition, 4∶2 fluorotelomer sulfonate (FTS) was associated with increased birth weight (β=0.111) and decreased Apgar-5 score (β=-0.030) in the normal weight group. Conclusion: Prenatal exposure to PFASs is associated with birth weight, birth length and Apgar-5 score. It is necessary to continue to pay attention to the impact of PFASs on fetal growth and development through maternal-fetal transmission.
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Affiliation(s)
- C Y Xu
- College of Environmental and Engineering, Donghua University, Shanghai 201620, China
| | - W T Li
- College of Environmental and Engineering, Donghua University, Shanghai 201620, China
| | - Y H Tian
- Women's Hospital School of Medicine Zhejiang University, Hangzhou 310006, China
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Ji WX, Tian YC, Cai MH, Jiang BC, Cheng S, Li Y, Zhou Q, Li BQ, Chen BY, Zheng X, Li WT, Li AM. Simultaneous determination of dissolved organic nitrogen, nitrite, nitrate and ammonia using size exclusion chromatography coupled with nitrogen detector. J Environ Sci (China) 2023; 125:309-318. [PMID: 36375916 DOI: 10.1016/j.jes.2021.11.026] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/21/2021] [Accepted: 11/21/2021] [Indexed: 06/16/2023]
Abstract
Accurate quantification of dissolved organic nitrogen (DON) has been a challenge due to the cumulative analytical errors in the conventional method via subtracting dissolved inorganic nitrogen species (DIN) from total dissolved nitrogen (TDN). Size exclusion chromatography coupled with an organic nitrogen detector (SEC-OND) has been developed as a direct method for quantification and characterization of DON. However, the applications of SEC-OND method still subject to poor separations between DON and DIN species and unsatisfied N recoveries of macromolecules. In this study, we packed a series of SEC columns with different lengths and resin materials for separation of different N species and designed an independent vacuum ultraviolet (VUV) oxidation device for complete oxidation converting N species to nitrate. To guarantee sufficient N recoveries, the operation conditions were optimized as oxidation time ≥ 30 min, injection mass (sample concentration × injection volume) < 1000 µL × mg-N/L for macromolecular proteins, and neutral pH mobile eluent. The dissolved O2 concentration in SEC mobile phase determined the upper limit of VUV oxidation at a specific oxidation time. Compared to conventional HW50S column (20 × 250 mm), HW40S column (20 × 350 mm) with mobile phase comprising of 1.5 g/L Na2HPO4·2H2O + 2.5 g/L KH2PO4 (pH = 6.85) could achieve a better separation of DON, nitrite, nitrate, and ammonia. When applied to river water, lake water, wastewater effluent, groundwater, and landfill leachate, the SEC-OND method could quantify DON as well as DIN species accurately and conveniently even the DIN/TDN ratio reached 0.98.
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Affiliation(s)
- Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Min-Hui Cai
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Bi-Cun Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shi Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Qing Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Bo-Qiang Li
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Bai-Yang Chen
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xing Zheng
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Quanzhou Institute for Environmental Protection Industry, Nanjing University, Quanzhou 362008, China
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Shi Y, Zheng L, Huang H, Tian YC, Gong Z, Liu P, Wu X, Li WT, Gao S. Formation of Nano- and Microplastics and Dissolved Chemicals During Photodegradation of Polyester Base Fabrics with Polyurethane Coating. Environ Sci Technol 2023; 57:1894-1906. [PMID: 36693029 DOI: 10.1021/acs.est.2c05063] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Polyurethane (PU) synthetic leathers possess an intricate plastic composition, including polyester (PET) base fabrics and upper PU resin, but the release of fragments from the complexes is unclear. Therefore, we investigated the photodegradation trends of PET base fabrics with PU coating (PET-U) as a representative of composite plastics. Attention was paid to the comparison of the photoaging process of PET-U with that of pure PET base fabric (PET-P). To reveal the potential for chain scission, physical and chemical changes (e.g., surface morphology, molecular weight, and crystallinity) of the two fabrics were explored. The generation of microplastic fibers (MPFs) and microplastic particles (MPPs) was distinguished. Compared with PET-P, PET-U showed a similar but delayed trend in various characteristics and debris release rate as the photoaging time prolonged. Even so, after 360 h of illumination, the generated number of MPs (including MPFs and MPPs) rose considerably to 9.32 × 107 MPs/g, and the amount of released nanoplastics (NPs) increased to 2.70 × 1011 NPs/g from PET-U. The suppression of MP formation from PET-U was potentially directed by the physical shielding of the upper PU layer and the dropped MPs, which resisted the photochemical radical effect. The components of dissolved organic matter derived from plastics (P-DOM) were separated by molecular weight using a size-exclusion chromatography-diode array detector-organic carbon detector/organic nitrogen detector (SEC-DAD-OCD/OND), and the results showed that a larger amount of carbon- and nitrogen-containing chemical substances were generated in PET-U, accompanied by more aromatic and fluorescent compounds. The results provided theoretical bases and insights for future research on the risks of plastic debris from PU synthetic leathers on aquatic organisms and indicated feasible directions for exploring combined pollution studies of plastics.
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Affiliation(s)
- Yanqi Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Lezhou Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Hexinyue Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Zhimin Gong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Peng Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, People's Republic of China
| | - Xiaowei Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, People's Republic of China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
| | - Shixiang Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, Jiangsu, People's Republic of China
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Ji WX, Tian YC, Li AM, Gu XM, Sun HF, Cai MH, Shen SQ, Zuo YT, Li WT. Unravelling relationships between fluorescence spectra, molecular weight distribution and hydrophobicity fraction of dissolved organic matter in municipal wastewater. Chemosphere 2022; 308:136359. [PMID: 36099987 DOI: 10.1016/j.chemosphere.2022.136359] [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: 06/14/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
The characteristics of dissolved organic matter (DOM) in the influent and secondary effluent from 6 municipal wastewater treatment plants (WWTPs) were investigated with a size exclusion chromatogram (SEC) coupled with multiple detectors to simultaneously detect ultraviolet absorbance, fluorescence, dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) as a function of molecular weight (MW). The SEC chromatograms showed that biopolymers (>6 kDa) and humic substances (0.5-6 kDa) comprised the significant fraction in the influent, while humic substances became the abundant proportion in the secondary effluent. Direct linkages between MW distribution and hydrophobicity of DOM in the secondary effluent were further explored via SEC analysis of XAD resin fractions. DON and DOC with different hydrophobicity exhibited significantly distinct MW distribution, indicating that it was improper to consider DOC as a surrogate for DON. Different from DOC, the order of averaged MW in terms of DON was hydrophobic neutral ≈ transphilic neutral > hydrophobic acid > transphilic acid > hydrophilic fraction. Fluorescence spectral properties exhibited a significant semi-quantitative correlation with MW and hydrophobicity of DOC, with Pearson's coefficients of -0.834 and 0.754 (p < 0.01) for biopolymer and humic substances. Meanwhile, regional fluorescence proportion was demonstrated to indicate the MW and hydrophobicity properties of DON at the semi-quantitative level. The fluorescence excitation-emission matrix (EEM) could be explored to provide a rapid estimation of MW distribution and hydrophobic/hydrophilic proportion of DOC and DON in WWTPs.
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Affiliation(s)
- Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xiao-Ming Gu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Hong-Fang Sun
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Min-Hui Cai
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Shan-Qi Shen
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan-Ting Zuo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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Zhang YH, Yu B, Liu YC, Ma W, Li WT, Zhang PD. The influence of decreased salinity levels on the survival, growth and physiology of eelgrass Zostera marina. Mar Environ Res 2022; 182:105787. [PMID: 36368210 DOI: 10.1016/j.marenvres.2022.105787] [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: 07/18/2022] [Revised: 10/04/2022] [Accepted: 10/22/2022] [Indexed: 06/16/2023]
Abstract
Low salinity generally promotes the growth and propagation of temperate seagrasses, but the appropriate range is unclear. We subjected shoots of eelgrass Zostera marina to different salinity levels [10, 15, 20, 25, 30 PSU (control)] for 6 weeks under controlled laboratory conditions. We measured eelgrass responses in terms of survivorship, growth, productivity, leaf pigmentation and carbohydrate concentrations. Survival analysis combined with growth assessment suggested that the optimal salinity range for the propagation of Z. marina shoots was 18-21 PSU. Structural equation model (SEM) analysis indicated that the promotion effect of decreased salinity levels on the survival and growth of Z. marina shoots mainly depended on the increase in chlorophyll content and the accumulation and synthesis of nonstructural carbohydrates. The carotenoid content and soluble sugar content of the aboveground tissues of Z. marina shoots exposed to 20 PSU were 1.1 and 1.6 times higher than those of shoots under the control, respectively. The results will provide valuable data that could prove helpful in the development of efficient artificial propagation technology for Z. marina shoots.
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Affiliation(s)
- Yan-Hao Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Bing Yu
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - You-Cai Liu
- Hydrogeology and Engineering Geology Survey Institute, Geology and Mineral Exploration Bureau of Hebei Province, Shijiazhuang, People's Republic of China
| | - Wang Ma
- Hydrogeology and Engineering Geology Survey Institute, Geology and Mineral Exploration Bureau of Hebei Province, Shijiazhuang, People's Republic of China
| | - Wen-Tao Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Pei-Dong Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China.
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21
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Li B, Yang F, Chen B, Li J, Zhu L, Li WT. Detecting trace dissolved organic nitrogen (DON) in freshwater by converting DON rapidly into nitrate with VUV/H 2O 2 pretreatment. Chemosphere 2022; 307:135790. [PMID: 35940404 DOI: 10.1016/j.chemosphere.2022.135790] [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: 05/11/2022] [Revised: 07/09/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Dissolved organic nitrogen (DON) plays a key role in many biogeochemistry and engineering processes such as forming nitrogenous disinfection byproducts. However, detecting aqueous DON at trace levels is challenging currently because conventional DON conversion methods have very high method detection limits (MDL). In addition, DON is measured indirectly by subtracting dissolved inorganic nitrogen (DIN) from total dissolved nitrogen (TDN), which can propagate analytical errors of each analyte. In order to solve these issues, we isolated DON from DIN with electrodialysis before and herein tested vacuum ultraviolet (VUV) in tandem with several oxidants to convert DON completely into nitrate for subsequent N analysis. Results showed that H2O2 was more suitable than chlorine and persulfate because VUV/chlorine or VUV/persulfate is either inefficient to convert DON or subjected to nonnegligible N loss. To verify the efficiency, we evaluated the effects of typical water and operating variables on the conversions of four model DON compounds and their yields of nitrate. Under optimal conditions (pH 10.3 and 500 mg/L H2O2), the process converted DON completely into nitrate within just 60 min. Compared to conventional TDN analytical methods, the VUV/H2O2 method features not only better analytical precision but also lower MDL because the formed nitrate can be analyzed at very low MDL by ion chromatography (IC). So, this approach moves one step further to achieve a conceptually new DON analytical method by coupling electrodialysis, VUV/H2O2, and IC.
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Affiliation(s)
- Boqiang Li
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Fei Yang
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Baiyang Chen
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology, Shenzhen, 518055, China.
| | - Juan Li
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Lijuan Zhu
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, China
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22
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Zhang YH, Wang HH, Li F, Sun J, Li WT, Zhang PD. The combined effect of planting density and sediment fertilization on survival, growth and physiology of eelgrass Zostera marina. Mar Pollut Bull 2022; 184:114136. [PMID: 36155412 DOI: 10.1016/j.marpolbul.2022.114136] [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: 06/07/2022] [Revised: 09/07/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
We subjected shoots of eelgrass Zostera marina to different combinations of planting density [300 (control), 450, 600, 750, 900 shoots m-2] and sediment fertilization [0 (control), 35, 70, 105, 140 g m-2] for 6 weeks under controlled conditions. We measured eelgrass responses in terms of survivorship, growth, productivity, leaf pigmentation and carbohydrate concentrations. The ramet frequency of Z. marina reached 47.8 % when exposed to the combination of 600 shoots m-2 and 70 g m-2, which was 3.2 times higher than that of shoots under the control. Survival analysis combined with growth assessment suggested that the optimal ranges of planting density and sediment fertilization for the propagation of Z. marina shoots were 501 to 530 shoots m-2 and 51 to 60 g m-2, respectively. The promotion of survival and propagation of Z. marina that stemmed from planting density and sediment fertilization mainly depended on the increase of chlorophyll content and accumulation of non-structural carbohydrate. The total chlorophyll content of Z. marina leaves exposed to the combination of 600 shoots m-2 and 70 g m-2 was 2.1 times higher than that of shoots under the control. The results will provide data that could prove helpful in the development of efficient artificial propagation technology for Z. marina shoots.
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Affiliation(s)
- Yan-Hao Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - He-Hu Wang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Fan Li
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resources and Environment Research Institute, Yantai, People's Republic of China
| | - Jie Sun
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Wen-Tao Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China
| | - Pei-Dong Zhang
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, People's Republic of China.
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23
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Zhou Z, Feng X, Yang L, Fang XZ, Xu KN, Li WT, Yang YN, Shi YF. [The Helicobacter pylori infection rate detected in combination by immunohistochemical staining and 14C urea breath test in Xinjiang patient and analysis with its related factors]. Zhonghua Bing Li Xue Za Zhi 2022; 51:656-658. [PMID: 35785839 DOI: 10.3760/cma.j.cn112151-20211202-00877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Z Zhou
- Department of Pathology, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - X Feng
- Department of Laboratory Medicine, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - L Yang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Beijing Office for Cancer Prevention and Control, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - X Z Fang
- Department of Pathology, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - K N Xu
- Department of Pathology, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - W T Li
- Department of Pathology, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - Y N Yang
- Department of Pathology, the Affiliated Hospital of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830002, China
| | - Y F Shi
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital and Institute, Beijing 100142, China
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Zuo YT, Cheng S, Jiang HH, Han YZ, Ji WX, Wang Z, Zhou Q, Li AM, Li WT. Release and removal of algal organic matter during prechlorination and coagulation treatment of cyanobacteria-laden water: Are we on track? Sci Total Environ 2022; 824:153793. [PMID: 35150674 DOI: 10.1016/j.scitotenv.2022.153793] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/05/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
A better understanding of the physicochemical properties and fate of algae-derived organic matter (AOM) in water treatments significantly benefits the control of algae-derived disinfection byprodcuts and process parameter optimization. In this study, we conducted a comprehensive investigation of the release and treatability of dissolved organic matter during prechlorination and postcoagulation treatments of cyanobacteria-laden source water via size-exclusion chromatography-tandem diode array detector, fluorescence detector and organic carbon detector. The results revealed that the allochthonous humic substances could protect algal cell membrane from damage during prechlorination at a low level of chlorine dose. Due to the release and oxidation of biopterins during prechlorination of M. aeruginosa cells, the variation of the humic-like fluorescence can be used to indicate the chlorine dose for a sufficient membrane damage of algae cells. The prechlorination of M. aeruginosa cells induced minimal release of large MW biopolymer fractions but much more release of low MW fractions E1 and E2 (i.e., unknown carbonaceous substances and fluorescent nitrogenous biopterins). The physically extracted AOM contained a large proportion of biopolymers and could not well represent those released during prechlorination treatment. During coagulation, the negative effect of humic substances on the coagulant demand to achieve algae removal was more remarkable than AOM released by prechlorination. The high-MW biopolymers and humic substances can be removed over 50% by coagulation. Among the low-MW carbonaceous fractions, E1 released by prechlorination can also be effectively removed via coagulation while fractions C, D (possibly oligopeptides or secondary aromatic metabolites & low MW acids) and nitrogenous biopterins were recalcitrant to coagulation. This study highlights the differences of AOM properties between physical extraction and prechlorination and provides a basis for drinking water treatment plants to give more attention to the recalcitrant low MW fractions in coagulation when treating algae-laden source water.
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Affiliation(s)
- Yan-Ting Zuo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shi Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hao-Han Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Zheng Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Qing Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Quanzhou Institute for Environmental Protection Industry, Nanjing University, Quanzhou 362008, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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25
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Wang S, Hu ZY, Geng ZQ, Tian YC, Ji WX, Li WT, Dai K, Zeng RJ, Zhang F. Elucidating the production and inhibition of melanoidins products on anaerobic digestion after thermal-alkaline pretreatment. J Hazard Mater 2022; 424:127377. [PMID: 34879570 DOI: 10.1016/j.jhazmat.2021.127377] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 08/17/2021] [Revised: 09/13/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
The refractory organics released from waste activated sludge (WAS) are unwanted produced in thermal-alkaline pretreatment, which are not well documented. In this study, we refer to them as melanoidins products (MPs) with characteristics of high molecular weight and inhibition to microbes. The results showed that these MPs from thermal-alkaline (80 °C and pH 10) pretreatment of WAS were identified with a broad molecular weight (>1000 Da). Dark-colored MPs were further verified from glucose and tryptophan as the model components, with values of UV280 and UV420 increasing. The produced MPs with a molecular weight of 1220, 6835, and even 21,200,000 Da were confirmed by SEC-HPLC. Unexpectedly, MPs were found to be electroactive with higher redox peak values than that of humic acids, which were almost not degraded by anaerobes as revealed by SEC-HPLC and 3D-EEM spectra. For the first time, the results demonstrated that MPs delayed volatile fatty acids production and reduced the methane yield (22-26% lower), which was likely attributed to the toxicity and/or electrons competition with anaerobes such as Methanosaeta. Thus, it is clear that MPs negatively impact anaerobic digestion after thermal-alkaline pretreatment, which shall be re-evaluated to minimize MPs when producing biochemicals from WAS.
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Affiliation(s)
- Shuai Wang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Zhi-Yi Hu
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Zi-Qian Geng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kun Dai
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Raymond Jianxiong Zeng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fang Zhang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
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26
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Hu ZY, Wang S, Geng ZQ, Dai K, Ji WX, Tian YC, Li WT, Zeng RJ, Zhang F. Controlling volatile fatty acids production from waste activated sludge by an alginate-degrading consortium. Sci Total Environ 2022; 806:150730. [PMID: 34606857 DOI: 10.1016/j.scitotenv.2021.150730] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 08/28/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
It is desirable to control volatile fatty acids (VFAs) recovery from waste activated sludge (WAS) while avoiding the release of N and P. Structural extracellular polymeric substances (St-EPS), with typical components of alginate and polygalacturonic acid, resist the biodegradation of extracellular polymeric substances (EPS) in WAS. Previously, we purposely enriched an alginate-degrading consortium (ADC), but, both controlling VFAs production and cell integrity after dosing with ADC were not investigated. In this work, ADC with a high percentage of the genus Bacteroides (~67%) was further enriched with alginate utilization above 95%. The St-EPS content in WAS was 109.7 ± 3.3 mg/g-VSS, accounting for 31% of EPS. After dosing ADC in the WAS, the main metabolites were acetate (1.6 g/L) and propionate (0.7 g/L), the hydrolysis efficiency was increased to 38%, and the acidification efficiency was increased to 72%. Cell integrity was maintained during WAS fermentation by dosing with ADC according to no P release and unchanged lactate dehydrogenase activity. VFA production was mainly from the EPS, and protein degradation in EPS resulted in low N release (e.g., 212 mg/L from casein and no P release). Consequently, ADC doing offers the advantages of controlling VFAs production from EPS while maintaining cell integrity.
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Affiliation(s)
- Zhi-Yi Hu
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Shuai Wang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Zi-Qian Geng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Kun Dai
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Ye-Chao Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Raymond Jianxiong Zeng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fang Zhang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
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27
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Li WT, Hu MY, Xiong JW, Zhang XY, Zhu SF. Iron-catalysed hydroalumination of internal alkynes. Chem Sci 2022; 13:7873-7879. [PMID: 35865894 PMCID: PMC9258402 DOI: 10.1039/d2sc02160a] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 06/10/2022] [Indexed: 11/21/2022] Open
Abstract
Although research on iron-catalysed reactions has recently achieved significant progress, the activity and selectivity of iron catalysts are generally inferior to those of noble-metal catalysts. The development of new iron-catalysed reactions, especially those in which iron catalysts exhibit superior activity or selectivity to other catalysts, is the key to promote iron catalysis. Herein, we report the first protocol for iron-catalysed hydroalumination of internal alkynes. Specifically, in the presence of iron catalysts bearing 2,9-diaryl-1,10-phenanthroline ligands, internal alkynes were stereo- and regioselectively hydroaluminated with the commercially available reagent diisobutylaluminum hydride. Compared with other metal-catalysed alkyne hydroalumination reactions reported in the literature, the iron-catalysed protocol has the following advantages: unusual amino-group-directed regioselectivity, a wide substrate scope, good functional group tolerance, high selectivity, and mild reaction conditions. The alkenylaluminum products prepared in this way could undergo a diverse array of transformations, and were used for the synthesis of bioactive compounds. The current study expands the scope of iron catalysis, provides a new efficient access to alkenylaluminum, discloses the origin of the superiority of iron catalysts, and thus may inspire further studies in related fields. An iron-catalysed hydroalumination of internal alkynes featuring with unusual amino-group-directed regioselectivity, a wide substrate scope, good functional group tolerance, high selectivity, and mild reaction conditions was realized.![]()
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Affiliation(s)
- Wen-Tao Li
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Meng-Yang Hu
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jun-Wen Xiong
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin-Yu Zhang
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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28
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Qin HW, Zhang QS, Li YJ, Li WT, Wang Y. [Molecular mechanism of astragaloside Ⅳ against atherosclerosis by regulating miR-17-5p and PCSK9/VLDLR signal pathway]. Zhongguo Zhong Yao Za Zhi 2022; 47:492-498. [PMID: 35178994 DOI: 10.19540/j.cnki.cjcmm.20210918.701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study explores the regulatory effect of astragaloside Ⅳ on miR-17-5 p and its downstream proprotein convertase subtillisin/kexin type 9(PCSK9)/very low density lipoprotein receptor(VLDLR) signal pathway, aiming at elucidating the mechanism of astragaloside Ⅳ against atherosclerosis(AS). In cell experiment, oxidized low-density lipoprotein(ox-LDL) was used for endothelial cell injury modeling with vascular smooth muscle cells(VSMCs). Then cells were classified into the model group, miR-17-5 p inhibitor group, blank serum group, and astragaloside Ⅳ-containing serum group based on the invention. Afterward, cell viability and the expression of miR-17-5 p, VLDLR, and PCSK9 mRNA and protein in cells in each group were detected. In animal experiment, 15 C57 BL/6 mice were used as the control group, and 45 ApoE~(-/-) mice were classified into the model group, miR-17-5 p inhibitor group, and astragaloside Ⅳ group, with 15 mice in each group. After 8 weeks of intervention, the peripheral serum levels of interleukin-6(IL-6), interleukin-10(IL-10), and tumor necrosis factor-α(TNF-α), and the expression of miR-17-5 p, VLDLR, and PCSK9 mRNA in the aorta of mice were detected. The pathological changes of mice in each group were observed. According to the cell experiment, VSMC viability in the miR-17-5 p inhibitor group and the astragaloside Ⅳ-containing serum group was higher than that in the model group(P<0.05). The mRNA and protein expression of miR-17-5 p and VLDLR in VSMCs in the miR-17-5 p inhibitor group and the astragaloside Ⅳ-containing serum group was lower than that in the model group(P<0.05), but the mRNA and protein expression of PCSK9 was higher than that in the model group(P<0.05). As for the animal experiment, the levels of IL-6 and TNF-α in the peripheral serum of the miR-17-5 p inhibitor group and the astragaloside Ⅳ group were lower(P<0.05) and the serum level of IL-10 was higher(P<0.05) than that of the model group. The mRNA expression of miR-17-5 p and VLDLR in the aorta in the miR-17-5 p inhibitor group and the astragaloside Ⅳ group was lower(P<0.05), and PCSK9 mRNA expression was higher(P<0.05) than that in the model group. Pathological observation showed mild AS in the miR-17-5 p inhibitor group and the astragaloside Ⅳ group. In summary, astragaloside Ⅳ can prevent the occurrence and development of AS. The mechanism is that it performs targeted regulation of miR-17-5 p, further affecting the PCSK9/VLDLR signal pathway, inhibiting vascular inflammation, and thus alleviating endothelial cell injury.
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Affiliation(s)
- He-Wei Qin
- Second Affiliated Hospital of Henan University of Traditional Chinese Medicine Zhengzhou 450002, China Henan University of Chinese Medicine Zhengzhou 450002, China
| | - Qin-Sheng Zhang
- Second Affiliated Hospital of Henan University of Traditional Chinese Medicine Zhengzhou 450002, China
| | - Yan-Jie Li
- Second Affiliated Hospital of Henan University of Traditional Chinese Medicine Zhengzhou 450002, China
| | - Wen-Tao Li
- Henan University of Chinese Medicine Zhengzhou 450002, China
| | - Yuan Wang
- Henan University of Chinese Medicine Zhengzhou 450002, China
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29
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Cai MH, Luo G, Li J, Li WT, Li Y, Li AM. Substrate competition and microbial function in sulfate-reducing internal circulation anaerobic reactor in the presence of nitrate. Chemosphere 2021; 280:130937. [PMID: 34162109 DOI: 10.1016/j.chemosphere.2021.130937] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 04/16/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
Nitrate and sulfate often coexist in organic wastewater. In this study, an internal circulation anaerobic reactor was conducted to investigate the impact of nitrate on sulfate reduction. The results showed that sulfate reduction rate dropped from 78.4% to 41.4% at NO3- /SO42- ratios ranging from 0 to 1.03, largely attributed to the inactivity of acetate-utilizing sulfate-reducing bacteria (SRB) and preferential usage of nitrate of propionate-utilizing SRB. Meanwhile, high nitrate removal efficiency was maintained and COD removal efficiency increased with nitrate addition. Enhancement of propionate and butyrate degradation based on Modified Gompertz model and Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt2) analysis. Moreover, nitrate triggered the shift of microbial community and function. Twelve genera affiliated to Firmicutes, Bacteroidetes and Proteobacteria were identified as keystone genera via network analysis, which kept functional stability of the bacterial community responding to nitrate stress. Increased nitrate inhibited Desulfovibrio, but promoted the growth of Desulforhabdus. Both the predicted functional genes associated with assimilatory sulfate reduction pathway (cysC and cysNC) and dissimilatory sulfate reduction pathway (aprA, aprB, dsrA and dsrB) exhibited negative relationship with nitrate addition.
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Affiliation(s)
- Min-Hui Cai
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Gan Luo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Jun Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
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Liu CH, Zhao BL, Li WT, Zhou XH, Jin Z, An LB. Changes in depressive-like behaviors induced by spinal cord injury based on the hypothalamic-pituitary-adrenal axis and hippocampal neurogenesis. J Integr Neurosci 2021; 20:635-644. [PMID: 34645096 DOI: 10.31083/j.jin2003067] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/22/2021] [Accepted: 08/09/2021] [Indexed: 11/06/2022] Open
Abstract
A reduction in sucrose preference is a key characteristic of depressive-like behaviors after spinal cord injury as judged by the sucrose preference test, the hypothalamic-pituitary-adrenal axis and adult hippocampal neurogenesis. Male rats were divided into three groups: control, sham and spinal cord injury groups. The spinal cord injury rats received a severe mid-thoracic contusion. The Basso, Beattie and Bresnahan score was used to assess motor function. The sucrose preference test and forced swim test were used to evaluate depressive-like behaviors. Serum corticosterone levels were examined by enzyme-linked immunosorbent assay and hippocampal glucocorticoid receptor levels were examined by Western blot to evaluate the function of the hypothalamic-pituitary-adrenal axis. Adult hippocampal neurogenesis was assessed by testing hippocampal brain-derived neurotrophic factor and tropomyosin receptor kinase B levels by Western blot and doublecortin levels by immunohistochemistry. Data showed that spinal cord injury impaired motor function. The spinal cord injury rats exhibited decreased sucrose preference on day six, which continued to decrease until day twelve, followed by a plateau phase. Additionally, the immobility time of the spinal cord injury rats was increased on day thirty-four. Moreover, serum corticosterone levels in the spinal cord injury group peaked on day seven, was decreased by day twenty-one and was increased again on day thirty-five. Serum corticosterone levels were significantly negatively correlated with sucrose preference and positively correlated with immobility time. Finally, hippocampal doublecortin levels on days twenty-one and thirty-five were lower in the spinal cord injury group than in the other groups. These results suggest that hyperactivation of the hypothalamic-pituitary-adrenal axis and the inhibition of adult hippocampal neurogenesis may be part of the underlying mechanism responsible for depressive-like behaviors after spinal cord injury.
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Affiliation(s)
- Chang-Hong Liu
- School of Nursing, Jilin University, 130021 Changchun, Jilin, China
| | - Bo-Lun Zhao
- School of Nursing, Dalian University, 116622 Dalian, Liaoning, China
| | - Wen-Tao Li
- School of Nursing, Dalian University, 116622 Dalian, Liaoning, China
| | - Xiao-Hua Zhou
- School of Nursing, Dalian University, 116622 Dalian, Liaoning, China
| | - Zhe Jin
- School of Nursing, Dalian University, 116622 Dalian, Liaoning, China
| | - Li-Bin An
- School of Nursing, Jilin University, 130021 Changchun, Jilin, China
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Zhao Q, Wang Y, Li WT. Synergistic effects of arsenic trioxide combined with Salmonella typhimurium in treating the advanced hepatocellular carcinoma in rat models. J Gastrointest Oncol 2021; 12:1732-1742. [PMID: 34532123 DOI: 10.21037/jgo-21-4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 06/08/2021] [Indexed: 11/06/2022] Open
Abstract
Background To evaluate the safety and efficacy of arsenic trioxide (ATO) combined with VNP20009 in treating the advanced hepatocellular carcinoma (HCC). Methods The proliferation assay, migration assay and real-time PCR analyses were performed to assess the impact of ATO combined with VNP20009 on the McA-RH7777 cells. Forty Buffalo rats were orthotopically implanted with HCC in the livers and randomly divided into four groups: (A) ATO plus VNP20009; (B) ATO; (C) VNP20009; and (D) control. ATO (2 mg/kg) was administered by peritoneal injection once a day and continued for five days. VNP20009 (about 1×107 CFU) was directly injected into the tail vein. MRI examinations were performed to access the tumor responses one and 2 weeks later, respectively. Micro CT scans of chest were performed to assess the lung metastases. Hematoxylin-eosin (HE) staining and immunohistochemical analyses were performed to analyze the tumor tissues. Results In the in vitro experiments, VNP20009 suppressed the proliferation of McA-RH7777 cells, attenuated their migration ability, and weakened the potential of metastases. MRI examinations showed that the mean residual tumor volumes of ATO plus VNP20009 group on the 7th day and 14th day after the administration of ATO combined with VNP20009 were significantly smaller than those of other groups. Micro CT scans revealed that the lung metastases rates of ATO plus VNP20009 group and VNP20009 group were significantly lower than those of other groups. Immunohistochemical analyses displayed that the levels of VEGF and Vimentin in the tumors of ATO plus VNP20009 group were obviously lower than those of other groups. The median survival of rats in the ATO plus VNP20009 group was longer than those of other groups. Conclusions The strategy of ATO combined with VNP20009 was safe and had a potential to inhibit tumor growth, decrease the lung metastases, and prolong the overall survival in treating the advanced HCC. The two complementary interventions may have synergistic effects.
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Affiliation(s)
- Qing Zhao
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ying Wang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wen-Tao Li
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
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Ma Y, Liu ZH, Xi BD, Li WT, Xu YQ, Zhao HZ, Chen ZQ, He XS, Xing B. Molecular structure and evolution characteristics of dissolved organic matter in groundwater near landfill: Implications of the identification of leachate leakage. Sci Total Environ 2021; 787:147649. [PMID: 34000547 DOI: 10.1016/j.scitotenv.2021.147649] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/20/2021] [Accepted: 05/05/2021] [Indexed: 06/12/2023]
Abstract
Landfills can cause groundwater contamination, the pollution characteristics in groundwater near landfill sites have been extensively investigated, while the rapid identification of leachate leakage remained unclear. Comprehensively characterizing dissolved organic matter (DOM) is crucial for tracing the source, species, and migration of contaminants within groundwater and protecting groundwater sources. Here, we showed that DOM composition from newer landfills was mainly composed of newly-produced tryptophan and tyrosine, and protein-like and humic-like substances were more abundant in landfills that were relatively older. DOM in landfill groundwater was initially dominated by outputs from microbial activities, followed by terrigenous input. Leaked leachate contained an additional dye-derived fluorescent matter at the excitation/emission wavelength of 240-260/440-460 nm that was absent in uncontaminated groundwater. Leachate leakage increased the concentrations of humic-like substance, DOM molecular weight, and microbial activity in the downstream groundwater, resulting in the microorganisms rapidly multiply and secrete large amounts of microbial metabolism by-products, making them suitable indicators of groundwater pollution. Three criteria were proposed to establish an interpretable fluorescence method to identify leachate pollution. The obtained results provide a novel insight into not only the monitoring, early warning, and identification but also the transport, fate and removal or transformation of groundwater leachate in landfills.
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Affiliation(s)
- Yan Ma
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Zhen-Hai Liu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Bei-Dou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental, Beijing 100012, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, Collaborative Innovation Center for Advanced Water Pollution Control Technology and Equipment, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yan-Qiu Xu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Hang-Zheng Zhao
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
| | - Zhu-Qi Chen
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiao-Song He
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental, Beijing 100012, China.
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA
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Zhou D, Xu Z, Li W, Xie X, Peng S. MultiDTI: Drug-target interaction prediction based on multi-modal representation learning to bridge the gap between new chemical entities and known heterogeneous network. Bioinformatics 2021; 37:4485-4492. [PMID: 34180970 DOI: 10.1093/bioinformatics/btab473] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/27/2021] [Accepted: 06/27/2021] [Indexed: 12/14/2022] Open
Abstract
MOTIVATION Predicting new drug-target interactions is an important step in new drug development, understanding of its side effects, and drug repositioning. Heterogeneous data sources can provide comprehensive information and different perspectives for drug-target interaction prediction. Thus, there have been many calculation methods relying on heterogeneous networks. Most of them use graph-related algorithms to characterize nodes in heterogeneous networks for predicting new DTI. However, these methods can only make predictions in known heterogeneous network datasets, and cannot support the prediction of new chemical entities outside the heterogeneous network, which hinder further drug discovery and development. RESULTS To solve this problem, we proposed a multi-modal DTI prediction model named 'MultiDTI' which uses our proposed joint learning framework based on heterogeneous networks. It combines the interaction or association information of the heterogeneous network and the drug/target sequence information, and maps the drugs, targets, side effects and disease nodes in the heterogeneous network into a common space. In this way, 'MultiDTI' can map the new chemical entity to this learned common space based on the chemical structure of the new entity. That is, bridging the gap between new chemical entities and known heterogeneous network. Our model has strong predictive performance, and the area under the receiver operating characteristic curve(AUC) of the model is 0.961 and the area under the precision recall curve (AUPRC) is 0.947 with 10-fold cross validation. In addition, some predicted new DTIs have been confirmed by ChEMBL database. Our results indicate that 'MultiDTI' is a powerful and practical tool for predicting new DTI, which can promote the development of drug discovery or drug repositioning. AVAILABILITY Python codes and dataset are available at https://github.com/Deshan-Zhou/MultiDTI/. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Deshan Zhou
- Department of Computer Science, Hunan University, Changsha, 410082, China
| | - Zhijian Xu
- CAS Key Laboratory of Receptor Research; Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - WenTao Li
- Department of Computer Science, National University of Defense Technology, Changsha, 410073, China
| | - Xiaolan Xie
- College of Information Science and Engineering, Guilin University of Technology, Guilin, 541004, China
| | - Shaoliang Peng
- Department of Computer Science, Hunan University, Changsha, 410082, China.,Department of Computer Science, National University of Defense Technology, Changsha, 410073, China
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Dong JY, Zhao L, Sun X, Hu C, Wang Y, Li WT, Zhang PD, Zhang X. Response of macrobenthic communities to heavy metal pollution in Laoshan Bay, China: A trait-based method. Mar Pollut Bull 2021; 167:112292. [PMID: 33873041 DOI: 10.1016/j.marpolbul.2021.112292] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 11/17/2020] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
The effects of multiple natural and anthropogenic stressors on the functional trait composition and diversity of marine macrobenthic communities in Laoshan Bay were investigated using biological trait analysis (BTA). Seven traits, including 27 trait modalities and four functional diversity indices (functional richness, functional evenness, functional divergence, and Rao's quadratic entropy), were considered. The results of RLQ (environmental variables (R), species taxa (L), and traits (Q)) and variance partitioning analysis (VPA) showed that the trait compositions and functional diversity of macrobenthic communities were influenced by a combination of stressors, among which heavy metals were the major factors. At the sites with high heavy metal pollution, the prevalent traits were infauna, burrower, and deposit feeder, whereas epifauna, carnivores and crawlers were dominant at the sites of low heavy metal contamination. The impact of natural environmental gradients on macrobenthic communities is also worthy of attention.
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Affiliation(s)
- Jian-Yu Dong
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Linlin Zhao
- First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Xin Sun
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Chengye Hu
- Fisheries College, Zhejiang Ocean University, Zhoushan 316022, China
| | - Yihang Wang
- Fisheries College, Zhejiang Ocean University, Zhoushan 316022, China
| | - Wen-Tao Li
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Pei-Dong Zhang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Xiumei Zhang
- Fisheries College, Zhejiang Ocean University, Zhoushan 316022, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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Cheng F, Zhang QX, Chen CJ, Li WT, Zhang JR, Zhang GQ, Yan JW. Mitochondrial DNA Heteroplasmy of Hair Shaft Using HID Ion GeneStudio TM S5 Sequencing System. Fa Yi Xue Za Zhi 2021; 37:21-25. [PMID: 33780180 DOI: 10.12116/j.issn.1004-5619.2019.590905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Indexed: 06/12/2023]
Abstract
Objective To study the heteroplasmy of the whole mitochondrial genome genotyping result of hair shaft samples using HID Ion GeneStudioTM S5 Sequencing System. Methods The buccal swabs and blood of 8 unrelated individuals, and hair shaft samples from different parts of the same individual were collected. Amplification of whole mitochondrial genome was performed using Precision ID mtDNA Whole Genome Panel. Analysis and detection of whole mitochondrial genome were carried out using the HID Ion GeneStudioTM S5 Sequencing System. Results The mitochondrial DNA sequences in temporal hair shaft samples from 2 individuals showed heteroplasmy, while whole mitochondrial genome genotyping results of buccal swabs, blood, and hair samples from the other 6 unrelated individuals were consistent. A total of 119 base variations were observed from the 8 unrelated individuals. The numbers of variable sites of the individuals were 29, 40, 38, 35, 13, 36, 40 and 35, respectively. Conclusion Sequence polymorphism can be fully understood using HID Ion GeneStudioTM S5 Sequencing system.
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Affiliation(s)
- F Cheng
- College of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - Q X Zhang
- Forensic Central of Beijing Public Security Bureau, Beijing 100192, China
| | - C J Chen
- Forensic Central of Beijing Public Security Bureau, Beijing 100192, China
| | - W T Li
- College of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - J R Zhang
- College of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - G Q Zhang
- College of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - J W Yan
- College of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China
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Cheng S, Wu YP, Young TR, Dodd MC, Wu J, Zhang H, Huo ZL, Qian YT, Li Y, Li WT, Li AM. Rapid determination of trace haloacetic acids in water and wastewater using non-suppressed ion chromatography with electrospray ionization-tandem mass spectrometry. Sci Total Environ 2021; 754:142297. [PMID: 33254877 DOI: 10.1016/j.scitotenv.2020.142297] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/23/2020] [Accepted: 09/07/2020] [Indexed: 06/12/2023]
Abstract
A simple and rapid method employing non-suppressed ion chromatography with electrospray ionization tandem mass spectrometry has been developed for the direct determination of trace-level haloacetic acids (HAAs) in water samples. Using 70/30 (v/v) acetonitrile/1 M aqueous methylamine as the mobile phase, three IC columns - AS16, AS18 and AS24 from Thermo-Scientific - were tested, respectively, with the AS16 column exhibiting the best overall performance with respect to resolution and retention time. To assess the effects of mobile phase composition on retention time of HAAs, the AS16 column was further tested using (i) different proportions of acetonitrile to aqueous methylamine, (ii) different proportions of acetonitrile to aqueous solution at fixed methylamine concentrations, and (iii) different concentrations of methylamine at fixed proportions of acetonitrile to aqueous solution. With a low proportion of aqueous solution, van der Waals and/or hydrogen-bonding interactions appeared to play an important role in governing HAA retention, i.e., HAAs with relatively higher apparent logKow* caused by elevated solvent sspKa exhibited longer retention times; whereas with a high proportion of aqueous solution, ionic interactions appeared to dominate retention of HAAs, with the more polarizable HAAs exhibiting longer retention times. Using 70/30 (v/v) acetonitrile/1 M aqueous methylamine, the method detection limits were in the range of 0.090-0.216 μg/L for the 11 selected chloro-, bromo- and iodoacetic acids. Finally, this method was applied to monitor HAAs yields in laboratory chlorination experiments and to determine concentrations of HAAs in tap water and wastewater effluent samples.
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Affiliation(s)
- Shi Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ya-Ping Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Tessora R Young
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Michael C Dodd
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Ji Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hao Zhang
- Jiangsu Province Center for Disease Control and Prevention, Nanjing, China
| | - Zong-Li Huo
- Jiangsu Province Center for Disease Control and Prevention, Nanjing, China.
| | - Yu-Ting Qian
- Jiangyin Environmental Monitoring Station, Jiangyin, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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Li WT, Liu YH, Pan P, Ye SS, Xia Y, Liu AQ, Yu JC. [Effects of "Tiaoyi Sanjiao" acupuncture and moxibustion on cancer-induced fatigue and immune function in patients with advanced non-small cell lung cancer]. Zhen Ci Yan Jiu 2021; 45:1000-5. [PMID: 33415860 DOI: 10.13702/j.1000-0607.200204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To observe the therapeutic effect of "Tiaoyi Sanjiao" (regulating and tonifying the triple energizer)acupuncture and moxibustion in the treatment of cancer-related fatigue of advanced non-small cell lung cancer and observe its influence on lymphocyte count. METHODS The cancer-related fatigue patients with advanced non-small cell lung cancer who met the inclusive criteria were randomly divided into 2 groups, with 77 cases in each group. Patients in the control group were treated with conventional Chinese and Western medicine. In the treatment group, on the base of the treatment as the control group, "Tiaoyi Sanjiao" acupuncture and moxibustion was applied(mild moxibustion at Danzhong [CV17], Zhongwan[CV12], Qihai[CV6], bilateral Zusanli[ST36], and acupuncture at bilateral Xuehai[SP10], Waiguan[SJ5], Taichong[LR3]). KPS score, Piper scale, percentage and absolute count of lymphocyte subsets of the two groups before and after treatment were observed. RESULTS Compared with pre-treatment, the KPS scores of both groups were significantly increased after treatment (P<0.05); the behavioral dimension score of the Piper scale, and the percentage of B cells of the control group decreased significantly(P<0.05); the behavioral dimension, emotional dimension, sensory dimension scores, and total score of the Piper scale in the treatment group were significantly reduced(P<0.05), while the percentage of CD3+T cells and absolute counts of CD3+T cells, CD4+T cells and CD8+T cells of the treatment group were significantly increased (P<0.05). After treatment, in comparison with the control group, behavioral dimension score of the Piper scale in the treatment group decreased significantly(P<0.05); the percentage and absolute counts of B cells and CD4+T cells, the absolute count of CD3+T cells in the treatment group were up-regulated (P<0.05). CONCLUSION "Tiaoyi Sanjiao" acupuncture and moxibustion can significantly alleviate the fatigue state and improve the quality of life in patients with advanced non-small cell lung cancer, which may be achieved by regulating the number of lymphocytes and improving immune function.
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Affiliation(s)
- Wen-Tao Li
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300381, China
| | - Yun-He Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300381, China
| | - Pan Pan
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617
| | - Song-Shan Ye
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617
| | - Ying Xia
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617
| | - A-Qing Liu
- Tianjin University of Traditional Chinese Medicine, Tianjin 301617
| | - Jian-Chun Yu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300381, China
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Cheng S, Wu J, Zuo YT, Han YZ, Ji WX, Li Y, Huo ZL, Li AM, Li WT. Developing a restricted chlorine-dosing strategy for UV/chlorine and post-chlorination under different pH and UV irradiation wavelength conditions. Chemosphere 2020; 258:127393. [PMID: 32947669 DOI: 10.1016/j.chemosphere.2020.127393] [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: 03/18/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
UV/chlorine and chlorination processes have drawn great interests of water treatment utilities for oxidation and disinfection purposes. This work proposed a restricted chlorine-dosing strategy for UV/chlorine and post-chlorination under different pH and UV irradiation conditions by comprehensively assessing the oxidation of natural organic matter (NOM), formation of 9 haloacetic acids (HAA9) and bromate, and alteration of toxicity. During UV/chlorine with restricted chlorine doses, the oxidation of NOM chromophores (i.e., ΔUVA254) showed an apparent dependence on cumulative exposures of free available chlorine (CTFAC); Meanwhile, HAA9 formation was determined by CTFAC values and could be linearly correlated with ΔUVA254 irrespective of pH and UV irradiation wavelength. Irradiated by 254 nm LP-Hg lamp, the faster chlorine photolysis produced relatively higher steady-state concentrations of Cl• and HO• species but resulted in lower CTFAC. Reducing CTFAC values by operation parameters (pH, UV wavelength and irradiation fluence) could mitigate HAA9 formation during UV/chlorine at a specific chlorine dose. Additionally, high bromide concentration and acidic pH promoted more bromo-HAAs formation, and the presence of NOM significantly suppressed bromate formation. Analogous to ozonation, the UV/chlorine pre-oxidation could reduce the HAA9 formation potentials during post-chlorination at mildly alkaline pH. The photobacterium bioassay further demonstrated that although the UV/chlorine treatment might have increased the acute toxicity, the post-chlorination treatment could polish the acute toxicity to the level of chlorination alone. These results suggest that with the restricted chlorine-dosing strategy, the trade-off between oxidation/disinfection efficiency and DBPs formation can be controlled by monitoring CTFAC and ΔUVA254 values during UV/chlorine treatment.
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Affiliation(s)
- Shi Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ji Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan-Ting Zuo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Zong-Li Huo
- Jiangsu Province Center for Disease Control and Prevention, Nanjing, 210023, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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Wang Y, Zhang GY, Xu LC, He XH, Huang HZ, Li GD, Wang YH, Wang GZ, Li WT. Clinical Outcomes and Predictors in Patients With Unresectable Colorectal Cancer Liver Metastases Following Salvage Percutaneous Radiofrequency Ablation: A Single Center Preliminary Experience. Technol Cancer Res Treat 2020; 19:1533033820963662. [PMID: 33034276 PMCID: PMC7549072 DOI: 10.1177/1533033820963662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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] [Indexed: 12/13/2022] Open
Abstract
Purpose: The purpose of this study was to investigate the clinical efficacy of salvage
percutaneous radiofrequency ablation in patients with unresectable
colorectal cancer liver metastases. Methods: The cohort consisted of 81 patients with 126 colorectal cancer liver
metastases who underwent radiofrequency ablation between January 2012 and
September 2016. The clinical data and ablation data were retrospectively
analyzed. The local tumor progression-free survival, overall survival, and
prognostic factors were analyzed using the log-rank test and Cox regression
model. Results: The technique success rate was 99.21%. The primary efficacy rate was 100% at
the 1-month follow-up. Minor complications were observed in 2 patients,
which recovered within 1 week. The median local tumor progression-free
survival time of all patients was 29.8 months. The absence of subsequent
chemotherapy was an independent predictor of a shorter local tumor
progression-free survival time (P < 0.001, hazard ratio:
2.823, 95% confidence interval: 1.603, 4.972). The median overall survival
time was 26.8 months. A lesion size greater than 3 cm (P =
0.011, hazard ratio: 2.112, 95% confidence interval: 1.188, 3.754) and the
presence of early local tumor progression (P = 0.011,
hazard ratio: 2.352, 95% confidence interval: 1.217, 4.545) were related to
a shorter survival time. Conclusions: Percutaneous radiofrequency ablation is safe in patients with colorectal
cancer liver metastases refractory from chemotherapy. Subsequent
chemotherapy is important to enhance local control. Small lesions and
favorable early responses are related to prolonged overall survival.
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Affiliation(s)
- Ying Wang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Guang-Yuan Zhang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Radiology, Shanghai Proton and Heavy Ion Center, Shanghai, China.,Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Li-Chao Xu
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Xin-Hong He
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Hao-Zhe Huang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Guo-Dong Li
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Yao-Hui Wang
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Guang-Zhi Wang
- Department of Medical Imaging Center, Affiliated Hospital, Weifang Medical University, Shandong, China
| | - Wen-Tao Li
- Department of Interventional Radiology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
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Abstract
Although tremendous effort has been devoted to the development of methods for iron catalysis, few of the catalysts reported to date exhibit clear superiority to other metal catalysts, and the mechanisms of most iron catalysis remain unclear. Herein, we report that iron complexes bearing 2,9-diaryl-1,10-phenanthroline ligands exhibit not only unprecedented catalytic activity but also unusual ligand-controlled divergent regioselectivity in hydrosilylation reactions of various alkynes. The hydrosilylation protocol described herein provides a highly efficient method for preparing useful di- and trisubstituted olefins on a relatively large scale under mild conditions, and its use markedly improved the synthetic efficiency of a number of bioactive compounds. Mechanistic studies based on control experiments and density functional theory calculations were performed to understand the catalytic pathway and the observed regioselectivity.
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Affiliation(s)
- Meng-Yang Hu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Peng He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tian-Zhang Qiao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei Sun
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wen-Tao Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jie Lian
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin-Hong Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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41
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Wang X, He D, Li WT, Adila S, Han R, Dong Y. [Characteristic and clinical significance of microRNA expression between 144 Uygur and Han women with endometrial carcinoma]. Beijing Da Xue Xue Bao Yi Xue Ban 2020; 52:570-577. [PMID: 32541994 DOI: 10.19723/j.issn.1671-167x.2020.03.026] [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: 11/20/2022]
Abstract
OBJECTIVE To compare the expression patterns of microRNA (miRNA) between 144 Uygur and Han women with endometrial carcinoma and to investigate their clinical significance. METHODS Taqman miRNA low-density array was used to compare miRNA profiles between Uygur and Han women with non-endometrioid endometrial carcinoma (NEEC). Five miRNAs were further analyzed in the 144 endometrial cancers including 62 Uygur and 82 Han samples via real-time PCR to determine their expression patterns. RESULTS MiRNA expression profiles revealed that many miRNAs overexpressed or downregula-ted in one ethnic group, but did not express or changed slightly in the other ethnic group. Further detection in the 144 endometrial cancers showed that miR-141, miR-200a, and miR-205 overexpressed in both ethnic groups. In Uygur endometrioid endometrial carcinoma (EEC), tumors with miR-141/200a overexpression tended to be more aggressive in behavior, whereas in the Han group, EEC with miR-200a overexpression was relative mild. However, the NEEC with miR-200a overexpression also had aggressive clinicopathologic features in the Han women. MiR-145 and miR-143 expressed differentially between Uygur and Han groups, they overexpressed in the former and decreased in the latter (P<0.05). In the Uygur women miR-145/143 increased significantly in NEEC and there was a trend that NEEC exhibiting favorable clinicopathologic factors had higher miR-145 expression, and was statistically significant in tumors with myometrial invasion less than 1/2 thickness (P=0.042). By contrary, miR-145/143 decreased in Han group and EEC with worse clinicopathologic variables had lower expression although without statistical significance. NEEC in Han group had no such tendency. CONCLUSION Uygur and Han women might have different miRNA expression profiles. MiR-141/200a/205 overexpressed in endometrial carcinomas and miR-141/200a might behave differently between these two ethnic groups as well as in EEC and in NEEC. Although miR-145/143 showed inverse expression patterns between Uygur and Han women with endometrial cancer, they all exerted tumor suppression effect on endometrial cancer.
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Affiliation(s)
- X Wang
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - D He
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - W T Li
- Department of Pathology, Affiliated Cancer Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - S Adila
- Department of Pathology, Affiliated Cancer Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - R Han
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
| | - Y Dong
- Department of Pathology, Peking University First Hospital, Beijing 100034, China
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42
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Zhao DD, Zhao X, Li WT. Identification of differentially expressed metastatic genes and their signatures to predict the overall survival of uveal melanoma patients by bioinformatics analysis. Int J Ophthalmol 2020; 13:1046-1053. [PMID: 32685390 DOI: 10.18240/ijo.2020.07.05] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 06/06/2019] [Accepted: 08/19/2019] [Indexed: 02/06/2023] Open
Abstract
AIM To identify metastatic genes and miRNAs and to investigate the metastatic mechanism of uveal melanoma (UVM). METHODS GSE27831, GSE39717, and GSE73652 gene expression profiles were downloaded from the Gene Expression Omnibus (GEO) database, and the limma R package was used to identify differentially expressed genes (DEGs). Gene Ontology (GO) term enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed using the DAVID online tool. A comprehensive list of interacting DEGs was constructed using the Search Tool for the Retrieval of Interacting Genes (STRING) database and Cytoscape software. The Cytoscape MCODE plug-in was used to identify clustered sub-networks and modules of hub genes from the protein-protein interaction network. GEPIA online software was used for survival analysis of UVM patients (n=80) from the The Cancer Genome Atlas (TCGA) cohort. OncomiR online software was used to find that the miRNAs were associated with UVM prognosis from the TCGA cohort. TargetScan Human 7.2 software was then used to identify the miRNAs targeting the genes. RESULTS There were 1600 up-regulated genes and 1399 down-regulated genes. The up-regulated genes were mainly involved in protein translation in the cytosol, whereas the down-regulated genes were correlated with extracellular matrix organization and cell adhesion in the extracellular space. Among the 2999 DEGs, five genes, Znf391, Mrps11, Htra3, Sulf2, and Smarcd3 were potential predictors of UVM prognosis. Otherwise, three miRNAs, hsa-miR-509-3-5p, hsa-miR-513a-5p, and hsa-miR-1269a were associated with UVM prognosis. CONCLUSION After analyzing the metastasis-related enriched terms and signaling pathways, the up-regulated DEGs are mainly involved in protein synthesis and cell proliferation by ribosome and mitogen-activated protein kinase (MAPK) pathways. However, the down-regulated DEGs are mainly involved in processes that reduced cell-cell adhesion and promoted cell migration in the extracellular matrix through PI3K-Akt signaling pathway, focal adhesion, and extracellular matrix-receptor interactions. Bioinformatics and interaction analysis may provide new insights on the events leading up to the development and progression of UVM.
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Affiliation(s)
- Dan-Dan Zhao
- Shanxi Eye Hospital, Taiyuan 030001, Shanxi Province, China
| | - Xin Zhao
- Datong Second People's Hospital, Datong 037006, Shanxi Province, China
| | - Wen-Tao Li
- Taiyuan University of Science and Technology, Taiyuan 030051, Shanxi Province, China
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43
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Yang LL, Evans D, Xu B, Li WT, Li ML, Zhu SF, Houk KN, Zhou QL. Enantioselective Diarylcarbene Insertion into Si-H Bonds Induced by Electronic Properties of the Carbenes. J Am Chem Soc 2020; 142:12394-12399. [PMID: 32539369 PMCID: PMC7605718 DOI: 10.1021/jacs.0c04725] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Catalytic enantioselection usually depends on differences in steric interactions between prochiral substrates and a chiral catalyst. We have discovered a carbene Si-H insertion in which the enantioselectivity depends primarily on the electronic characteristics of the carbene substrate, and the log(er) values are linearly related to Hammett parameters. A new class of chiral tetraphosphate dirhodium catalysts was developed; it shows excellent activity and enantioselectivity for the insertion of diarylcarbenes into the Si-H bond of silanes. Computational and mechanistic studies show how the electronic differences between the two aryls of the carbene lead to differences in energies of the diastereomeric transition states. This study provides a new strategy for asymmetric catalysis exploiting the electronic properties of the substrates.
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Affiliation(s)
- Liang-Liang Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Declan Evans
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Bin Xu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wen-Tao Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Mao-Lin Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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44
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Cai L, Li WT, Zhang LL, Lu XQ, Chen M, Liu Y. Long noncoding RNA GAS5 enhanced by curcumin relieves poststroke depression by targeting miR-10b/BDNF in rats. J BIOL REG HOMEOS AG 2020; 34:815-823. [PMID: 32627518 DOI: 10.23812/20-113-a-25] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The treatment for post-stroke depression (PSD) is mainly based on a therapeutic strategy combining anti-stroke and anti-depressant drugs. In the present study, the therapeutic effect of curcumin on rats with PSD was detected by open field tests and tail suspension tests, as well as the examination of corticosterone and corticotropin-releasing hormone (CRH) levels in the serum and neurotransmitter 5-hydroxytryptamine (5-HT), 5-hydroxyindoleacetic acid (5-HIAA) and dopamine (DA) levels in the hippocampus. Curcumin notably alleviated depression compared to the controls. Furthermore, long noncoding RNA growth arrest-specific transcript 5 (GAS5) enhanced by curcumin contributed to activation of the BDNF/Trkβ signaling pathway to promote the expression of synaptic-related proteins. GAS5 was demonstrated to function as a sponge of miR-10b. GAS5 upregulation by curcumin could reduce miR-10b to compromise the BDNF mRNA levels. Taken together, these results revealed a novel mechanism of curcumin on PSD through the GAS5/miR-10b/BDNF regulatory axis.
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Affiliation(s)
- L Cai
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
| | - W T Li
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
| | - L L Zhang
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
| | - X Q Lu
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
| | - M Chen
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
| | - Y Liu
- Department of Neurology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, University of Traditional Chinese Medicine
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45
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Yu CX, Zhang LL, Yang LJ, Li WT, Wu KK, Xie XS, Li DP, Wu ZJ. [Effects of inhibitors and pig manure on the transformation of urea nitrogen in paddy soil]. Ying Yong Sheng Tai Xue Bao 2020; 31:1851-1858. [PMID: 34494736 DOI: 10.13287/j.1001-9332.202006.026] [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: 11/04/2022]
Abstract
With the aim to understand the response of different nitrogen forms in paddy soil under the conditions of urea combined with inhibitors and pig manure, and to explore the nitrogen retention and supply capacity of paddy soil under different management strategy, we conducted a pot experiment with 15N labeled urea. There were six treatments: no nitrogen fertilizer (CK), pig manure (M), urea (N), urea+pig manure (NM), urea+inhibitor (NI), urea+inhibitor+pig manure (NIM). Urease inhibitor (PPD+NBPT) and nitrification inhibitor (DMPP) were used as the inhibitor combination. Soil nitrogen pools, conservation of 15N labeled urea, and rice N adsorption were measured in rice seedling, tillering, and mature stages. Results showed that pig manure significantly increased soil ammonium concentration, soil microbial biomass nitrogen and fixed ammonium, as well as the storage of urea nitrogen in various pools at tillering stage, and significantly increased rice yield. Addition of the inhibitors increased NH4+ fixation by clay minerals and nitrogen immobilization by microorganisms compared with treatment N, and increased urea-derived NH4+ fixation by clay minerals compared with treatment NM. Pathway analysis showed that pig manure increased urea-N assimilation and yield of rice. The urea-derived ammonium fixed by clay minerals was temporarily stored after inhibitors application. NIM treatment stored more N in microbial biomass, and the released ammonium coupled the turnover and mineralization of microbial provided more available nitrogen for the later growth of rice. Both NM and NIM treatments are recommended in paddy fields of north China.
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Affiliation(s)
- Chun-Xiao Yu
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Li-Li Zhang
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Li-Jie Yang
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Wen-Tao Li
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Kai-Kuo Wu
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Xue-Shi Xie
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Dong-Po Li
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
| | - Zhi-Jie Wu
- Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Shen-yang Research Institute of Chemical Industry, Shenyang 110021, China.,Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shen-yang 110016, China
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46
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Cai MH, Wu YP, Ji WX, Han YZ, Li Y, Wu JC, Shuang CD, Korshin GV, Li AM, Li WT. Characterizing property and treatability of dissolved effluent organic matter using size exclusion chromatography with an array of absorbance, fluorescence, organic nitrogen and organic carbon detectors. Chemosphere 2020; 243:125321. [PMID: 31733541 DOI: 10.1016/j.chemosphere.2019.125321] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/03/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
In this study, size exclusion chromatography with an array of absorbance, fluorescence, organic nitrogen and organic carbon detectors was used for characterizing property and treatability of effluent organic matter (EfOM) from 12 wastewater treatment plants. According to their apparent molecular weight (AMW), EfOM fractions were assigned to biopolymers (>20 kDa), humic substances that comprise sub-fractions of humic-like acids (HA-I & HA-II, 2.3-7.0 kDa) and fulvic-like acids (FA, 1.5-2.3 kDa), building blocks (0.55-1.5 kDa) and low molecular weight neutral substances (<550 Da). The fractions of biopolymers and low molecular weight neutral substances didn't show humic-like fluorescence, while the fractions of HA-II, FA and building blocks usually had signatures of both humic-like and protein-like fluorescence. Humic substances generally contributed the largest proportion of dissolved organic carbon and nitrogen (DOC & DON) in effluents. Coagulation removed EfOM fractions following the order of biopolymers > HA subfraction > FA subfraction > building blocks, while little removal of protein-like fluorescence in HA-II and FA subfractions was detected. Anion exchange treatment could effectively reduce DOC and DON concentrations; the sequence of the treatment efficiency was humic substances > biopolymers > building blocks. Increasing O3 doses caused DOC and DON of EfOM to be gradually transformed from large AMW fractions into small AMW fractions, while chromophores and fluorophores in HA subfractions were relatively more refractory than those in the other fractions. Size exclusion chromatography with multiple detectors are suggested to be an informative technique for estimating treatability of EfOM by advanced wastewater treatment processes.
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Affiliation(s)
- Min-Hui Cai
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ya-Ping Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Ji-Chun Wu
- Key Laboratory of Surficial Geochemistry Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China
| | - Chen-Dong Shuang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Gregory V Korshin
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China; Key Laboratory of Surficial Geochemistry Ministry of Education, School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, China.
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47
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Zhou XH, Li WT, Zhao BL, Bao ZR, Liu CH, Wu SQ, Xue HX, Liu YB, Han CH, Wang J, An LB. Design and Evaluation of a Novel Laminectomy Auxiliary Device Based on Rats. IEEE Trans Neural Syst Rehabil Eng 2020; 28:621-628. [DOI: 10.1109/tnsre.2020.2968610] [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]
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48
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Meng SX, Wang B, Li WT. Intermittent hypoxia improves cognition and reduces anxiety-related behavior in APP/PS1 mice. Brain Behav 2020; 10:e01513. [PMID: 31877583 PMCID: PMC7010588 DOI: 10.1002/brb3.1513] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/20/2019] [Accepted: 11/08/2019] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Although hypoxia can exacerbate symptoms of various neurological disorders, accumulating evidence has indicated that intermittent hypoxia (IH) may exert protective effects against brain diseases. In the present study, we aimed to determine whether exposure to IH exerts beneficial effects in a transgenic murine model of Alzheimer's disease (AD). Because comorbid anxiety is prevalent among patients with AD, we explored the effects of IH on anxiety-like behaviors and associated factors in APP/PS1 mice. METHODS APP/PS1 mice were subjected to IH for two weeks. We assessed cognitive performance and anxiety-related behavior using standard behavioral assessments. Amyloid beta (Aβ) levels in the hippocampus were assessed using immunofluorescence and enzyme-linked immunosorbent assays (ELISA). We also assessed cell morphology and brain-derived neurotrophic factor (BDNF) expression in the hippocampus. RESULTS Exposure to IH significantly increased cognitive performance and decreased anxiety-related behaviors in APP/PS1 mice. Immunofluorescence and ELISA results revealed that IH pretreatment significantly lowered Aβ levels in the cortex and hippocampus. Morphological studies validated the neuroprotective effect of IH exposure on hippocampal neurogenesis. Molecular studies revealed IH-enhanced BDNF expression and inhibition of apoptosis-related protein expression in the hippocampus of APP/PS1 mice. CONCLUSIONS Our study demonstrates that IH improves cognition and reduces anxiety in a murine model of AD. Thus, further studies are required to determine whether IH can be used as a preventive/adjuvant therapy in patients with AD.
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Affiliation(s)
- Sheng-Xi Meng
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Bing Wang
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wen-Tao Li
- Department of Vasculocardiology, Municipal Hospital of Traditional Chinese Medicine Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
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49
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Liu XG, Xu H, Chen M, Tan XY, Chen XF, Yang YG, Lin MZ, Liu GH, Liang XL, Qian YB, Yuan GJ, Chen MQ, Li WT, Miao HL, Li MY, Liao XW, Dai W, Chen NP. Identify potential clinical significance of long noncoding RNA forkhead box P4 antisense RNA 1 in patients with early stage pancreatic ductal adenocarcinoma. Cancer Med 2020; 9:2062-2076. [PMID: 31991068 PMCID: PMC7064149 DOI: 10.1002/cam4.2818] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 09/17/2019] [Revised: 12/04/2019] [Accepted: 12/17/2019] [Indexed: 12/21/2022] Open
Abstract
Previous studies have shown that forkhead box P4 antisense RNA 1 (FOXP4‐AS1) is dysregulated in tumor tissues and can serve as a prognostic indicator for multiple cancers. However, the clinical significance of FOXP4‐AS1 in pancreatic ductal adenocarcinoma (PDAC) remains unclear. The goal of this study is to recognize the possible clinical significance of long noncoding RNA FOXP4‐AS1 in patients with early stage PDAC. A total of 112 patients from The Cancer Genome Atlas (TCGA) PDAC cohort, receiving RNA sequencing, were involved in the study. Survival analysis, functional mechanism, and potential small molecule drugs of target therapy of FOXP4‐AS1 were performed in this study. Survival analysis in TCGA PDAC cohort suggested that patients with high FOXP4‐AS1 expression had significantly augmented possibility of death than in PDAC patients with lower FOXP4‐AS1 expression (adjusted P = .008; adjusted HR = 2.143, 95% CI = 1.221‐3.760). In this study, a genome‐wide RNA sequencing dataset was used to identify 927 genes co‐expressing with FOXP4‐AS1 in PDAC tumor tissues. A total of 676 differentially expressed genes were identified between different FOXP4‐AS1 expression groups. Functional enrichment analysis of these genes and gene set enrichment analysis for PDAC genome‐wide RNA sequencing dataset was done. We have found that FOXP4‐AS1 may function in PDAC by participating in biological processes and pathways including oxidative phosphorylation, tricarboxylic acid cycle, classical tumor‐related pathways such as NF‐kappaB as well as Janus kinase/signal transducers in addition to activators of transcription, cell proliferation, and adhesion. In addition, we also screened two potential targeted therapeutic small molecule drugs (dimenhydrinate and metanephrine) for FOXP4‐AS1 in PDAC. In conclusion, our present study demonstrated that higher expression of FOXP4‐AS1 in PDAC tumor tissues were related with an inferior medical outcome. Through multiple genome‐wide approaches, we identified the potential molecular mechanisms of FOXP4‐AS1 in PDAC and two targeted therapeutic drugs for it.
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Affiliation(s)
- Xiao-Guang Liu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Hao Xu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Ming Chen
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Xiao-Yu Tan
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Xiao-Feng Chen
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Yong-Guang Yang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Man-Zhou Lin
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Guo-Hua Liu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Xiao-Lu Liang
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Yi-Bin Qian
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Guo-Jia Yuan
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Min-Qiang Chen
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Wen-Tao Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Hui-Lai Miao
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Ming-Yi Li
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Xi-Wen Liao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Wei Dai
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
| | - Nian-Ping Chen
- Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province, People's Republic of China
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Li SQ, Zhang HY, Kang B, Zhang Q, Li WT, Zhang PD. Assessment of the ameliorating effect of sedimentary iron inputs on sulfide stress in eelgrass beds. Mar Pollut Bull 2020; 150:110730. [PMID: 31767204 DOI: 10.1016/j.marpolbul.2019.110730] [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: 09/09/2019] [Revised: 11/04/2019] [Accepted: 11/10/2019] [Indexed: 06/10/2023]
Abstract
Iron is recognized as an efficient method to alleviate sulfide stress. This study tested the response of Zostera marina plants to different levels of sedimentary sulfides (100.0-818.7 μmol L-1) and iron inputs (590.0-825.3 μg L-1) in a field experiment performed over an eighty-day period. We measured plant responses in terms of shoot density and plant morphology and productivity. The relationship between the propagation effort (PE, in %) and sulfide content (S, in μmol L-1) was expressed as: PE = -14.01 × ln (S) + 86.86 (R2 = 0.99, p < .01), which indicates that the toxic limit of the pore-water sulfide concentration for the survival of eelgrass is 493 μmol L-1. The addition of iron can reduce the toxicity of sulfides to eelgrass beds, resulting in an increase in plant density and productivity, and can even reverse the decline of eelgrass beds exposed to high sulfide concentrations.
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Affiliation(s)
- Shi-Qi Li
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Hong-Yu Zhang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Bin Kang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Qian Zhang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Wen-Tao Li
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Pei-Dong Zhang
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China.
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