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Chen L, Shao F, Chen K, Wu N, Sun B, Ge D, Wang G, Wang H, Yang Q. Organized assembly of chitosan into mechanically strong bio-composite by introducing a recombinant insect structural protein OfCPH-1. Carbohydr Polym 2024; 334:122044. [PMID: 38553240 DOI: 10.1016/j.carbpol.2024.122044] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/06/2024] [Accepted: 03/11/2024] [Indexed: 04/02/2024]
Abstract
Chitosan, known for its appealing biological properties in packaging and biomedical applications, faces challenges in achieving a well-organized crystalline structure for mechanical excellence under mild conditions. Herein, we propose a facile and mild bioengineering approach to induce organized assembly of amorphous chitosan into mechanically strong bio-composite via incorporating a genetically engineered insect structural protein, the cuticular protein hypothetical-1 from the Ostrinia furnacalis (OfCPH-1). OfCPH-1 exhibits high binding affinity to chitosan via hydrogen-bonding interactions. Simply mixing a small proportion (0.5 w/w%) of bioengineered OfCPH-1 protein with acidic chitosan precursor induces the amorphous chitosan chains to form fibrous networks with hydrated chitosan crystals, accompanied with a solution-to-gel transition. We deduce that the water shell destruction driven by strong protein-chitosan interactions, triggers the formation of well-organized crystalline chitosan, which therefore offers the chitosan with significantly enhanced swelling resistance, and strength and modulus that outperforms that of most reported chitosan-based materials as well as petroleum-based plastics. Moreover, the composite exhibits a stretch-strengthening behavior similar to the training living muscles on cyclic load. Our work provides a route for harnessing the OfCPH-1-chitosan interaction in order to form a high-performance, sustainably sourced bio-composite.
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Affiliation(s)
- Lei Chen
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, No 97 Buxin Road, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Fei Shao
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Kaiwen Chen
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Nan Wu
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Bingbing Sun
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Dan Ge
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China
| | - Guirong Wang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, No 97 Buxin Road, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Huanan Wang
- School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
| | - Qing Yang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, No 97 Buxin Road, Shenzhen 518120, China; State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 West Yuanmingyuan Road, Beijing 100193, China; School of Bioengineering, School of Chemical Engineering and State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
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Sun B, Zhou C, Zhu M, Wang S, Zhang L, Yi C, Ling H, Xiang M, Yu Y. Leaching kinetics and bioaccumulation potential of additive-derived organophosphate esters in microplastics. Environ Pollut 2024; 347:123671. [PMID: 38442824 DOI: 10.1016/j.envpol.2024.123671] [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: 12/13/2023] [Revised: 02/10/2024] [Accepted: 02/26/2024] [Indexed: 03/07/2024]
Abstract
Considerable research has been conducted to evaluate microplastics (MPs) as vehicles for the transfer of hazardous pollutants in organisms. However, little effort has been devoted to the chemical release of hazardous additive-derived pollutants from MPs in gut simulations. This study looked at the leaching kinetics of organophosphate esters (OPFRs) from polypropylene (PP) and polystyrene (PS) MPs in the presence of gut surfactants, specifically sodium taurocholate, at two biologically relevant temperatures for marine organisms. Diffusion coefficients of OPFRs ranged from 1.71 × 10-20 to 4.04 × 10-18 m2 s-1 in PP and 2.91 × 10-18 to 1.51 × 10-15 m2 s-1 in PS. The accumulation factors for OPFRs in biota-plastic and biota-sediment interactions ranged from 1.52 × 10-3-69.1 and 0.02-0.7, respectively. Based on B3LYP/6-31G (d,p) calculations, the biodynamic model analysis revealed a slight increase in the bioaccumulation of OPFRs at a minor dose of 0.05% MPs. However, at higher concentrations (0.5% and 5% MPs), there was a decrease in bioaccumulation compared to the lower concentration for most OPFR compounds. In general, the ingestion of PE MPs notably contributed to the bioaccumulation of OPFRs in lugworms, whereas the contribution of PP and PS MPs was minimal. This could vary among sites exhibiting varying levels of MP concentrations or MPs displaying stronger affinities towards chemicals.
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Affiliation(s)
- Bingbing Sun
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Chang Zhou
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - Ming Zhu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Siqi Wang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Liuyi Zhang
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - Chuan Yi
- Hubei Key Laboratory of Pollution Damage Assessment and Environmental Health Risk Prevention and Control, Hubei Academy of Ecological and Environmental Sciences, Wuhan, 430072, China
| | - Haibo Ling
- Hubei Key Laboratory of Pollution Damage Assessment and Environmental Health Risk Prevention and Control, Hubei Academy of Ecological and Environmental Sciences, Wuhan, 430072, China
| | - Mingdeng Xiang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China.
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Liang Z, Bao H, Yao Z, Li M, Chen C, Zhang L, Wang H, Guo Y, Ma Y, Yang X, Yu G, Zhang J, Xue C, Sun B, Mao C. The orientation of CpG conjugation on aluminum oxyhydroxide nanoparticles determines the immunostimulatory effects of combination adjuvants. Biomaterials 2024; 308:122569. [PMID: 38626556 DOI: 10.1016/j.biomaterials.2024.122569] [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: 01/27/2024] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/18/2024]
Abstract
In subunit vaccines, aluminum salts (Alum) are commonly used as adjuvants, but with limited cellular immune responses. To overcome this limitation, CpG oligodeoxynucleotides (ODNs) have been used in combination with Alum. However, current combined usage of Alum and CpG is limited to linear mixtures, and the underlying interaction mechanism between CpG and Alum is not well understood. Thus, we propose to chemically conjugate Alum nanoparticles and CpG (with 5' or 3' end exposed) to design combination adjuvants. Our study demonstrates that compared to the 3'-end exposure, the 5'-end exposure of CpG in combination adjuvants (Al-CpG-5') enhances the activation of bone-marrow derived dendritic cells (BMDCs) and promotes Th1 and Th2 cytokine secretion. We used the SARS-CoV-2 receptor binding domain (RBD) and hepatitis B surface antigen (HBsAg) as model antigens to demonstrate that Al-CpG-5' enhanced antigen-specific antibody production and upregulated cytotoxic T lymphocyte markers. Additionally, Al-CpG-5' allows for coordinated adaptive immune responses even at lower doses of both CpG ODNs and HBsAg antigens, and enhances lymph node transport of antigens and activation of dendritic cells, promoting Tfh cell differentiation and B cell activation. Our novel Alum-CPG strategy points the way towards broadening the use of nanoadjuvants for both prophylactic and therapeutic vaccines.
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Affiliation(s)
- Zhihui Liang
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China; Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, PR China
| | - Hang Bao
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
| | - Zhiying Yao
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Min Li
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Chen Chen
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
| | - Lei Zhang
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Huiyang Wang
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Yiyang Guo
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Yubin Ma
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Xuecheng Yang
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Ge Yu
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Jiancheng Zhang
- AIM Honesty Biopharmaceutical Co., Ltd, Dalian, 116100, PR China
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China.
| | - Bingbing Sun
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China.
| | - Chuanbin Mao
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, PR China.
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Shi W, Sun S, Liu H, Meng Y, Ren K, Wang G, Liu M, Wu J, Zhang Y, Huang H, Shi M, Xu W, Ma Q, Sun B, Xu J. Guiding bar motif of thioredoxin reductase 1 modulates enzymatic activity and inhibitor binding by communicating with the co-factor FAD and regulating the flexible C-terminal redox motif. Redox Biol 2024; 70:103050. [PMID: 38277963 PMCID: PMC10840350 DOI: 10.1016/j.redox.2024.103050] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/05/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
Thioredoxin reductase (TXNRD) is a selenoprotein that plays a crucial role in cellular antioxidant defense. Previously, a distinctive guiding bar motif was identified in TXNRD1, which influences the transfer of electrons. In this study, utilizing single amino acid substitution and Excitation-Emission Matrix (EEM) fluorescence spectrum analysis, we discovered that the guiding bar communicates with the FAD and modulates the electron flow of the enzyme. Differential Scanning Fluorimetry (DSF) analysis demonstrated that the aromatic amino acid in guiding bar is a stabilizer for TXNRD1. Kinetic analysis revealed that the guiding bar is vital for the disulfide reductase activity but hinders the selenocysteine-independent reduction activity of TXNRD1. Meanwhile, the guiding bar shields the selenocysteine residue of TXNRD1 from the attack of electrophilic reagents. We also found that the inhibition of TXNRD1 by caveolin-1 scaffolding domain (CSD) peptides and compound LCS3 did not bind to the guiding bar motif. In summary, the obtained results highlight new aspects of the guiding bar that restrict the flexibility of the C-terminal redox motif and govern the transition from antioxidant to pro-oxidant.
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Affiliation(s)
- Wuyang Shi
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Shibo Sun
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Haowen Liu
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Yao Meng
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Kangshuai Ren
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Guoying Wang
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Minghui Liu
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Jiaqi Wu
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Yue Zhang
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Huang Huang
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Meiyun Shi
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China
| | - Weiping Xu
- School of Ocean Science and Technology (OST) & Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), Dalian University of Technology, Panjin, 124221, China
| | - Qiang Ma
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering (CE), Dalian University of Technology, Dalian, 116023, China
| | - Jianqiang Xu
- School of Life and Pharmaceutical Sciences (LPS) & Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin, 124221, China.
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Wang J, Li Y, Xu T, Zheng J, Xiao K, Sun B, Ge M, Yuan X, Zhou C, Cai Z. Nanoporous Nickel Cathode with an Electrostatic Chlorine-Resistant Surface for Industrial Seawater Electrolysis Hydrogen Production. Inorg Chem 2024; 63:5773-5778. [PMID: 38498977 DOI: 10.1021/acs.inorgchem.4c00392] [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: 03/20/2024]
Abstract
Seawater electrolysis presents a promising avenue for green hydrogen production toward a carbon-free society. However, the electrode materials face significant challenges including severe chlorine-induced corrosion and high reaction overpotential, resulting in low energy conversion efficiency and low current density operation. Herein, we put forward a nanoporous nickel (npNi) cathode with high chlorine corrosion resistance for energy-efficient seawater electrolysis at industrial current densities (0.4-1 A cm-2). With the merits of an electrostatic chlorine-resistant surface, modulated Ni active sites, and a robust three-dimensional open structure, the npNi electrode showed a low hydrogen evolution reaction overpotential of 310 mV and a high electricity-hydrogen conversion efficiency of 59.7% at 400 mA cm-2 in real seawater and outperformed most Ni-based seawater electrolysis cathodes in recent publications and the commercial Ni foam electrode (459 mV, 46.4%) under the same test condition. In situ electrochemical impedance spectroscopy, high-frame-rate optical microscopy, and first-principles calculation revealed that the improved corrosion resistance, enhanced intrinsic activity, and mass transfer were responsible for the lowered electrocatalytic overpotential and enhanced energy efficiency.
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Affiliation(s)
- Jing Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yanqi Li
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Tian Xu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Jie Zheng
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Kaiwen Xiao
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Bingbing Sun
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Ming Ge
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Chenggang Zhou
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zhao Cai
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
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Li YF, Li M, Yang F, Wang HF, Xu F, Chen SY, Sun B, Chen ZH, Huang XS. [Clinical and electrophysiological characteristics and treatment outcomes of anti-neutrophil cytoplasmic antibody ANCA-associated vasculitic neuropathy]. Zhonghua Nei Ke Za Zhi 2024; 63:386-393. [PMID: 38561284 DOI: 10.3760/cma.j.cn112138-20231031-00267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Objective: To investigate the clinical and electrophysiological characteristics of ANCA-associated vasculitic neuropathy (VN) and analyze the predictors of treatment outcomes. Methods: Retrospective case series. In all, 652 consecutive patients with ANCA-associated vasculitis were admitted to the First Medical Center of the Chinese PLA General Hospital between January 2006 and December 2022. Peripheral neuropathy occurred in 91 patients. Patients were excluded if other known causes of neuropathy were present. Sixty-one patients were eventually enrolled, including 17 with eosinophilic granulomatosis with polyangiitis (EGPA), 11 with granulomatosis polyangiitis (GPA), and 33 with microscopic polyangiitis (MPA). Their clinical data were collected and clinical characteristics, VN manifestations, electrophysiological findings (including interside amplitude ratio [IAR]), and treatment outcomes were compared among the three subsets of AAV. Then, factors influencing the treatment outcomes were analyzed using multivariable logistic regression analysis. Results: Peripheral neuropathy occurred in 62.1%(18/29) of EGPA, 8.3%(15/180) of GPA, and 13.1%(58/443) of MPA patients. The age at onset and examination was higher in patients with MPA than those with EGPA or GPA (P<0.01). The occurrence of VN was later in patients with GPA than those with EGPA (P<0.01), and the GPA group had fewer affected nerves than the other two groups (P<0.016). The abnormal IARs of motor nerves in lower limbs were more detected in the EGPA than the MPA group (P<0.01). Logistic regression analysis suggested that higher Birmingham vasculitis activity score-version 3 (BVAS-V3) (OR=6.85, 95%CI 1.33-35.30) was associated with better treatment outcomes of VN. However, central nervous system involvement was a risk factor for poor treatment outcomes (OR=0.13, 95%CI 0.02-0.89). Conclusions: The clinical and electrophysiological characteristics of VN were slightly different among subsets of AAV. Patients with GPA often presented with polyneuropathy and had fewer nerves affected; mononeuritis multiplex was more common in EGPA than GPA and MPA. Higher BVAS-V3 and central nervous system involvement might predict the treatment outcome of VN.
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Affiliation(s)
- Y F Li
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Geriatric Neurological Department of the Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - M Li
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Yang
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H F Wang
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Xu
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - S Y Chen
- Geriatric Neurological Department of the Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - B Sun
- Geriatric Neurological Department of the Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - Z H Chen
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - X S Huang
- Department of Neurology of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Zhang X, Gao Y, Lu L, Cao Y, Zhang W, Sun B, Wu X, Tong A, Chen S, Wang X, Mao J, Nie M. Targeted long-read sequencing for comprehensive detection of CYP21A2 mutations in patients with 21-hydroxylase deficiency. J Endocrinol Invest 2024; 47:833-841. [PMID: 37815751 DOI: 10.1007/s40618-023-02197-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/08/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND 21-Hydroxylase deficiency (21-OHD) is caused by pathogenic CYP21A2 variations. CYP21A2 is arranged in tandem with its highly homologous pseudogene CYP21A1P; therefore, it is prone to mismatch and rearrangement, producing different types of complex variations. There were few reports on using only one method to detect different CYP21A2 variants simultaneously. AIMS Targeted long-read sequencing method was used to detect all types of CYP21A2 variants in a series of patients with 21-OHD. METHODS A total of 59 patients with 21-OHD were enrolled from Peking Union Medical College Hospital. Long-range locus-specific PCR and long-read sequencing (LRS) were performed to detect the pathogenic variants in CYP21A2. RESULTS Copy-number variants of CYP21A2 were found in 25.4% of patients, including 5.1% with 3 copies of CYP21A2, 16.9% with 1 copy of CYP21A2, and 3.4% with 0 copy of CYP21A2. The remaining 74.6% of patients had 2 copies of CYP21A2. Pathogenic variants were identified in all 121 alleles of 59 patients. Specifically, single-nucleotide variants and small insertions/deletions (< 50 bp) were detected in 79 alleles, of which conversed from CYP21A1P were detected in 63 alleles, and rare variants were found in the other 16 alleles. Large gene conversions (> 50 bp) from pseudogene were detected in 10 alleles, and different chimeric genes (CYP21A1P/CYP21A2 or TNXA/TNXB) formed by large deletions were detected in 32 alleles. Of all variants, p.I173N was the most common variant (19.0%). CONCLUSIONS Our study demonstrated that targeted long-read sequencing is a comprehensive method for detecting CYP21A2 variations, which is helpful for genetic diagnosis in 21-OHD patients.
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Affiliation(s)
- X Zhang
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Y Gao
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - L Lu
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Y Cao
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - W Zhang
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - B Sun
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - X Wu
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - A Tong
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - S Chen
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - X Wang
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - J Mao
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - M Nie
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission (NHC), Peking Union Medical College Hospital), Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
- State Key Laboratory of Complex, Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
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8
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Yu G, Yang W, Zhang N, Yang C, Zeng H, Xue C, Sun B. Autoclave-Induced Changes in the Physicochemical Properties and Antigen Adsorption of Aluminum Adjuvants. J Pharm Sci 2024; 113:455-462. [PMID: 37813301 DOI: 10.1016/j.xphs.2023.10.009] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/11/2023]
Abstract
Aluminum hydroxide adjuvants are widely used in human vaccines, such as diphtheria, tetanus, hepatitis A and hepatitis B vaccines. The adsorption of antigens on aluminum hydroxide adjuvants determines the immune boosting effect of vaccines, but it is not clear how changes in physicochemical properties resulting from the production and formulation processes affect the adsorption of aluminum hydroxide adjuvants with antigens. In this study, the commercial aluminum hydroxide adjuvant Alhydrogel® was pretreated by commonly used processes such as autoclaving and calcination, and the changes of aluminum hydroxide adjuvant in physicochemical properties during the treatment were then comprehensively characterized. The adsorption of ovalbumin (OVA) with treated Alhydrogel®, was also investigated, it was found that the decrease in specific surface area caused by the autoclaving process reduced the adsorptive capacity of the antigen, and the adsorptive strength of antigen was decreased only when the surface hydroxyl groups and chemically bound water of adjuvant were reduced by calcination. These findings help to optimize the production and formulation process of adjuvants for the rational regulation of antigen adsorption in vaccines.
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Affiliation(s)
- Ge Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China; Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Wenqi Yang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China; Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Ning Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China; Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Cheng Yang
- School of Chemistry, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Hao Zeng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, 400038 Chongqing, China; State Key Laboratory of Trauma, Burn and Combined Injury, Third Military Medical University, 400038 Chongqing, China
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China.
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China; Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China.
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9
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Liang Z, Yu Y, Sun B, Yao Q, Lin X, Wang Y, Zhang J, Li Y, Wang X, Tang Z, Ma S. The underappreciated role of fugitive VOCs in ozone formation and health risk assessment emitted from seven typical industries in China. J Environ Sci (China) 2024; 136:647-657. [PMID: 37923473 DOI: 10.1016/j.jes.2022.12.037] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 12/30/2022] [Accepted: 12/30/2022] [Indexed: 11/07/2023]
Abstract
Fugitive emission from industrial sources may result in ozone formation and health risk, while the exact contribution of this source remains incompletely understood. In this study, emission characteristics, ozone formation potential (OFP) and health risk of fugitive VOCs in 7 representative industries were investigated. Chemical material industry was the dominant contributor to VOCs of fugitive emission in comparison with other industries. The OFP of VOCs from fugitive emission was in the range of 1.45 × 103-3.98 × 105 µg/m3, with a higher value than that of organized emission in seven industries except for the coking industry and the chemical material industry, suggesting that fugitive VOCs should be taken into account while developing control strategies. Acetaldehyde, m,p-xylene, n-nonane, ethylene, vinyl chloridethe and other high OFP-contributing species were the major reactive species that should be targeted. Health risk assessment investigated non-cancer and cancer risks of fugitive VOCs in 7 industries were all above safe level (HR > 1 and LCR > 1 × 10-4), posing remarkable health threats to human health. OVOCs were the main contributor to non-cancer risk, while halohydrocarbons and aromatics contributed most to cancer risks, posing remarkable health threat on human health. Our findings highlighted the contribution of fugitive VOCs on ozone formation and health risk was underestimated, indicating which should be considered in emission control strategies of industrial sources.
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Affiliation(s)
- Zhiling Liang
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Bingbing Sun
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Qian Yao
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Xihua Lin
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Yongsheng Wang
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China
| | - Jianping Zhang
- Henan Jiyuan Ecological Environment Testing Center, Jiyuan 454650, China
| | - Yingzi Li
- Ecological Environment Bureau of Jiyuan Production City Integration Demonstration Zone, Jiyuan 454650, China
| | - Xuefeng Wang
- Ecological Environment Bureau of Jiyuan Production City Integration Demonstration Zone, Jiyuan 454650, China
| | - Zhengzheng Tang
- Ecological Environment Bureau of Jiyuan Production City Integration Demonstration Zone, Jiyuan 454650, China
| | - Shexia Ma
- State Environmental Protection Key Laboratory of Environmental Protection Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510535, China.
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10
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Chen C, Xue C, Jiang J, Bi S, Hu Z, Yu G, Sun B, Mao C. Neurotoxicity profiling of aluminum salt-based nanoparticles as adjuvants for therapeutic cancer vaccine. J Pharmacol Exp Ther 2024:JPET-AR-2023-002031. [PMID: 38272670 DOI: 10.1124/jpet.123.002031] [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: 11/19/2023] [Revised: 12/29/2023] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
Therapeutic vaccines containing aluminum adjuvants have been widely used in the treatment of tumors due to their powerful immune-enhancing effects. However, the neurotoxicity of aluminum adjuvants with different physicochemical properties have not been completely elucidated. In this study, a library of engineered aluminum oxyhydroxide (EAOs) and aluminum hydroxyphosphate (EAHPs) nanoparticles was synthesized to determine their neurotoxicity in vitro It was demonstrated that the surface charge of EAHPs and size of EAOs did not affect the cytotoxicity in N9, bEnd.3 and HT22 cells, however, soluble aluminum ions trigger the cytotoxicity in three different cell lines. Moreover, soluble aluminum ions induce apoptosis in N9 cells, and further mechanistic studies demonstrated that this apoptosis was mediated by mitochondrial reactive oxygen species (mtROS) generation and mitochondrial membrane potential (MMP) loss. This study identifies the safety profile of aluminum-containing salts as adjuvants in the nervous system for use in a therapeutic cancer vaccine, and provides novel design strategies for their safer applications. Significance Statement Although therapeutic cancer vaccines containing aluminum-based nanoparticle adjuvants have been widely used in the treatment of tumors due to their powerful immune-enhancing effects, the neurotoxicity of such nanoparticle adjuvants is still unclear. Thus, this work fills this gap by engineering aluminum-based nanoparticle adjuvants with different surface charges and sizes to elucidate their neurotoxicity in the context of cancer vaccines.
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Affiliation(s)
- Chen Chen
- Dalian University of Technology, China
| | | | | | | | - Zurui Hu
- Dalian University of Technology, China
| | - Ge Yu
- Dalian University of Technology, Cambodia
| | | | - Chuanbin Mao
- Biomedical Engineering, The Chinese University of Hong Kong, China
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11
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Yin C, Liu X, Ma Y, Tang Z, Guo W, Sun B, He J. SIMULATED AEROMEDICAL EVACUATION EXACERBATES ACUTE LUNG INJURY VIA HYPOXIA-INDUCIBLE FACTOR-1α-MEDIATED BNIP3/NIX-DEPENDENT MITOPHAGY. Shock 2024:00024382-990000000-00361. [PMID: 38320215 DOI: 10.1097/shk.0000000000002306] [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: 02/08/2024]
Abstract
BACKGROUND With the advancement of medicine and the development of technology, the limiting factors of aeromedical evacuation are gradually decreasing, and the scope of indications is expanding. However, the hypobaric and hypoxic environments experienced by critically ill patients in flight can cause lung injury, leading to inflammation and hypoxemia, which remains one of the few limiting factors for air medical evacuation. This study aimed to examine the mechanism of secondary lung injury in rat models of acute lung injury that simulate aeromedical evacuation. METHODS An acute lung injury model was induced in SD rats by the administration of lipopolysaccharide (LPS) followed by exposure to a simulated aeromedical evacuation environment (equivalent to 8,000 feet above sea level) or a normobaric normoxic environment for 4 hours. The expression of hypoxia-inducible transcription-1 α (HIF-1α) was stabilized by pretreatment with dimethyloxalylglycine (DMOG). The reactive oxygen species (ROS) levels and the protein expression levels of HIF-1α, BNIP3 and NIX in lung tissue were measured. RESULTS Simulated aeromedical evacuation exacerbated pathological damage to lung tissue and increased the release of inflammatory cytokines in serum as well as the ROS levels and the protein levels of HIF-1α, BNIP3, and NIX in lung tissue. Pretreatment with DMOG resulted in increases in the protein expression of HIF-1α, BNIP3 and NIX. CONCLUSION Simulated aeromedical evacuation leads to secondary lung injury through mitophagy.
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Affiliation(s)
| | | | | | | | - Wenmin Guo
- Department of Critical Care Medicine, PLA Air Force Medical Center, Beijing, China
| | - Bingbing Sun
- Department of Critical Care Medicine, PLA Air Force Medical Center, Beijing, China
| | - Jingmei He
- Department of Critical Care Medicine, PLA Air Force Medical Center, Beijing, China
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12
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Sun B, Li M, Yao Z, Yu G, Ma Y. Advances in Vaccine Adjuvants: Nanomaterials and Small Molecules. Handb Exp Pharmacol 2024; 284:113-132. [PMID: 37059911 DOI: 10.1007/164_2023_652] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
Adjuvants have been extensively and essentially formulated in subunits and certain inactivated vaccines for enhancing and prolonging protective immunity against infections and diseases. According to the types of infectious diseases and the required immunity, adjuvants with various acting mechanisms have been designed and applied in human vaccines. In this chapter, we introduce the advances in vaccine adjuvants based on nanomaterials and small molecules. By reviewing the immune mechanisms induced by adjuvants with different characteristics, we aim to establish structure-activity relationships between the physicochemical properties of adjuvants and their immunostimulating capability for the development of adjuvants for more effective preventative and therapeutic vaccines.
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Affiliation(s)
- Bingbing Sun
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering and Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian, China.
| | - Min Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering and Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Zhiying Yao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering and Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Ge Yu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering and Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian, China
| | - Yubin Ma
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering and Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian, China
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13
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Chen C, Wang J, Guo Y, Li M, Yang K, Liu Y, Ge D, Liu Y, Xue C, Xia T, Sun B. Monosodium Urate Crystal-Induced Pyroptotic Cell Death in Neutrophil and Macrophage Facilitates the Pathological Progress of Gout. Small 2023:e2308749. [PMID: 38161265 DOI: 10.1002/smll.202308749] [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] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/09/2023] [Indexed: 01/03/2024]
Abstract
Monosodium urate (MSU) crystal deposition in joints can lead to the infiltration of neutrophils and macrophages, and their activation plays a critical role in the pathological progress of gout. However, the role of MSU crystal physicochemical properties in inducing cell death in neutrophil and macrophage is still unclear. In this study, MSU crystals of different sizes are synthesized to explore the role of pyroptosis in gout. It is demonstrated that MSU crystals induce size-dependent pyroptotic cell death in bone marrow-derived neutrophils (BMNs) and bone marrow-derived macrophages (BMDMs) by triggering NLRP3 inflammasome-dependent caspase-1 activation and subsequent formation of N-GSDMD. Furthermore, it is demonstrated that the size of MSU crystal also determines the formation of neutrophil extracellular traps (NETs) and aggregated neutrophil extracellular traps (aggNETs), which are promoted by the addition of interleukin-1β (IL-1β). Based on these mechanistic understandings, it is shown that N-GSDMD oligomerization inhibitor, dimethyl fumarate (DMF), inhibits MSU crystal-induced pyroptosis in BMNs and J774A.1 cells, and it further alleviates the acute inflammatory response in MSU crystals-induced gout mice model. This study elucidates that MSU crystal-induced pyroptosis in neutrophil and macrophage is critical for the pathological progress of gout, and provides a new therapeutic approach for the treatment of gout.
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Affiliation(s)
- Chen Chen
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Jingyun Wang
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Yiyang Guo
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Min Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Kaijun Yang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Yang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Dan Ge
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yong Liu
- Department of Hand Surgery, the Fifth Hospital of Harbin, Harbin, 150040, China
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
| | - Tian Xia
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, CA, 90095, USA
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian, 116024, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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Gao H, Sun B, Li X, Bai T, Du L, Song Y, Zheng C, Kan X, Liu F. Risk factors for portal vein system thrombosis after partial splenic embolisation in cirrhotic patients with hypersplenism. Clin Radiol 2023; 78:919-927. [PMID: 37634989 DOI: 10.1016/j.crad.2023.07.022] [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] [Received: 03/28/2023] [Revised: 07/18/2023] [Accepted: 07/26/2023] [Indexed: 08/29/2023]
Abstract
AIM To determine risk factors for portal venous system thrombosis (PVST) after partial splenic artery embolisation (PSAE) in cirrhotic patients with hypersplenism. MATERIALS AND METHODS Between March 2014 and February 2022, 428 cirrhotic patients with hypersplenism underwent partial splenic artery embolisation and from these patients 208 were enrolled and 220 were excluded. Medical records of enrolled patients were collected. Computed tomography (CT) images were reviewed by two blinded, independent radiologists. Statistical analyses were performed by using SPSS. RESULTS Progressive PVST was observed in 18.75% (39/208) of cirrhotic patients after PSAE. No significant differences in peripheral blood counts, liver function biomarkers, and renal function were observed between the patients with progressive PVST and the patients without progressive PVST. The imaging data showed significant differences in PVST, the diameters of the portal, splenic, and superior mesenteric veins between the progressive PVST group and non-progressive PVST group. Univariate and multivariate analysis demonstrated portal vein thrombosis, spleen infarction percentage, and the diameter of the splenic vein were independent risk factors for progressive PVST. Seventeen of 173 (9.83%) patients showed new PVST; the growth of PVST was observed in 62.86% (22/35) of the patients with pre-existing PVST. Spleen infarction percentage and the diameter of the splenic vein were independent risk factors for new PVST after PSAE. CONCLUSION The present study demonstrated portal vein thrombosis, spleen infarction percentage, and the diameter of the splenic vein were independent risk factors for PVST after PSAE in cirrhotic patients with hypersplenism.
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Affiliation(s)
- H Gao
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - B Sun
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Li
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - T Bai
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Du
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y Song
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - C Zheng
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Kan
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - F Liu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Wu T, Sun B, Lu K, Zhang J, Zhang S, Lin Z, Zhang Y, Zhu J, Yao D. The MEF2 homolog of Penaeus vannamei is essential for maintaining the WSSV latent infection. Gene 2023; 883:147677. [PMID: 37524135 DOI: 10.1016/j.gene.2023.147677] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/07/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023]
Abstract
White spot syndrome virus (WSSV) is a lethal shrimp pathogen that has a latent infection cycle. The latent virus can easily turn into an acute infection when the culture environment changes, leading to widespread shrimp mortality. However, the mechanism of WSSV latent infection is poorly understood. Bioinformatic analysis revealed that the promoters of WSSV latency-related genes (i.e., wsv151, wsv366, wsv403, and wsv427) contained putative myocyte enhancer factor 2 (MEF2) binding sites. This suggested that the transcription factor MEF2 may be involved in WSSV latent infection. To further investigate this, a MEF2 homolog (PvMEF2) was cloned from Penaeus vannamei and its role in WSSV latent infection was explored. The results showed that knockdown of PvMEF2 led to an increase in the copy number of WSSV, indicating reactivation of WSSV from a latent infection. It was further demonstrated that suppression of PvMEF2 significantly decreased expression of the viral latency-related genes in WSSV-latent shrimp, while overexpression of PvMEF2 in Drosophila S2 cells activated the promoter activity of the viral latency-related gene. Additionally, we demonstrated that silencing of PvMEF2 was able to upregulate the expression of pro-apoptosis genes, thereby promoting cell apoptosis during latent infection. Collectively, the present data suggest that PvMEF2 could promote the expression of virus latency-related genes and enhance cell survival to maintain WSSV latent infection. This finding would contribute to a better understanding of the maintenance mechanism of WSSV latent infection.
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Affiliation(s)
- Tingchu Wu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Bingbing Sun
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Kaiyu Lu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Jia Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Shuo Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Zhongyang Lin
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Yueling Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Jinghua Zhu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China.
| | - Defu Yao
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China.
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16
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Ixquiac M, Reynoso FJ, Schmidt M, Mazur TR, Zhao T, Gay HA, Hugo GD, Henke LE, Michalski JM, Velarde A, De Falla V, Reyes FE, Montenegro E, Ruiz Furlan EA, Sun B. Bridging the Gap of Radiotherapy Treatment Planning Quality between High-Income, and Low- and Middle-Income Countries Using Knowledge-Based Planning. Int J Radiat Oncol Biol Phys 2023; 117:e591. [PMID: 37785788 DOI: 10.1016/j.ijrobp.2023.06.1941] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Radiotherapy departments in low- and middle-income countries (LMICs) like Guatemala have recently introduced intensity-modulated radiotherapy (IMRT). IMRT has become the standard of care in high-income countries (HIC) due to reduced toxicity and improved outcomes in some cancers. The purpose of this work is to show the feasibility of adapting knowledge-based (KB) models established in a HIC to a LMIC lacking experience in IMRT to improve plan quality and planning efficiency. MATERIALS/METHODS A Halcyon Linac was installed at our clinic in Guatemala in 2019 and has been used to treat approximately 90 patients daily with IMRT. A model developed on a cohort of head and neck cancer patients at a US academic radiotherapy center were applied at our center to create 20head and neck VMAT plans with different prescriptions, including simultaneous-integrated and sequential boosts. RESULTS The plans created using the KB models achieved similar coverage of the planning target volume for each plan KB plans showed better 1) Parotid sparing with a mean dose reduction between 5%-25% and spinal cord maximum dose reduction between 3%-15%. The time efficiency to create VMAT plans using KB model versus manual planning improved four-fold, on average one hour versus more than 4 hours, respectively. CONCLUSION Despite different prescriptions, guidelines and demographics of cancer patients between two institutions in a HIC and LMIC, this work demonstrates that KB planning can be used to generate better and more consistent VMAT plans versus manually created plans. In addition, KB planning has the potential to greatly increase planning efficiency higher efficiency and help address the shortage of medical physicists and dosimetrists in LMICs.
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Affiliation(s)
- M Ixquiac
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - F J Reynoso
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - M Schmidt
- Washington University in St. Louis, St. Louis, MO
| | - T R Mazur
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - T Zhao
- Washington University in St. Louis, St. Louis, MO
| | - H A Gay
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - G D Hugo
- Washington University School of Medicine in St. Louis, St. Louis, MO
| | - L E Henke
- University Hospitals, Department of Radiation Oncology, Case Western Reserve University, Cleveland, OH
| | - J M Michalski
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO
| | - A Velarde
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - V De Falla
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - F E Reyes
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - E Montenegro
- Liga Nacional Contra el Cáncer / INCAN, Guatemala, Guatemala
| | - E A Ruiz Furlan
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - B Sun
- Baylor College of Medicine, Department of Radiation Oncology, Houston, TX
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Liu C, Zou W, Huang R, Yu J, Sun B. Dissecting Systemic T Cell Responses after Stereotactic Ablative Radiotherapy in NSCLC by Single-Cell RNA and T Cell Receptor Sequencing. Int J Radiat Oncol Biol Phys 2023; 117:e246. [PMID: 37784964 DOI: 10.1016/j.ijrobp.2023.06.1182] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) There is accumulating evidence that stereotactic ablative radiotherapy (SABR) modulates immune responses to cancer; combining SABR and immunotherapy could promote the abscopal effect, but the precise effects of SABR on patients' systemic T cells is unclear. Here, we investigated SABR-induced systemic T cell response in early-stage non-small cell lung cancer (NSCLC) by single-cell RNA and T cell receptor sequencing. MATERIALS/METHODS We performed single-cell RNA and T cell receptor sequencing on 29,439 T cells from four pairs of peripheral blood before and after SABR in early-stage NSCLC patients. Cell clustering and dimensionality reduction, SingleR, feature genes score, and TCR profiling analyses were used to investigate the heterogeneity of T cells and their changes following SABR. RESULTS We identified fourteen T cell subtypes using unsupervised graph-based clustering of uniform manifold approximation and projection. By comparing the gene set scores of CD8_TE and CD8_EM pre- and post-SABR, we found both cytotoxic and inhibitory scores were significantly elevated in CD8_TE (both P < 0.001), while cytotoxic score was significantly increased in CD8_EM (P < 0.001) after SABR. We also found that CD4_TE showed increased cytotoxic scores and decreased Treg scores (P < 0.001 and < 0.05, respectively), while Treg cells showed decreased inhibitory and Treg scores (P < 0.001 and <0.01, respectively) after SABR. The proportion of large TCR clones was higher after SABR, which was accompanied by a decrease in proportion of single clones. When we compared the transcriptomes of CD8_TE cells between the single, small and large clones post-SABR, we found high expression of GZMB and KLRC3 in cells with large clones, and GZMK, IL7R, and SELL in small and single clones. This suggested that T cells after SABR with large clones may have higher cytotoxicity than those with small and single clones. CONCLUSION Our study identified systemic T cell activation after SABR at single-cell resolution, providing unprecedented insight into the immune-modulatory role of SABR in early-stage NSCLC.
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Affiliation(s)
- C Liu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - W Zou
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - R Huang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - J Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - B Sun
- Department of Radiation Oncology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
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Ixquiac M, Montenegro E, Reynoso FJ, Schmidt M, Mazur TR, Zhao T, Gay HA, Hugo GD, Henke LE, Michalski JM, Velarde A, De Falla V, Reyes FE, Furlan EAR, Sun B. Standardizing LT Chest Wall Radiotherapy Treatment Planning in a Low- or Middle- Income Country Radiotherapy Clinic Using Knowledge Based Planning. Int J Radiat Oncol Biol Phys 2023; 117:e675-e676. [PMID: 37785990 DOI: 10.1016/j.ijrobp.2023.06.2129] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Radiotherapy departments in low- or middle-income countries (LMICs) tend to lag behind introducing emerging technologies like intensity-modulated radiotherapy (IMRT). IMRT has become the standard of care in high-income countries (HIC) due to reduced toxicity and improved outcomes in a wide variety of cancers. The purpose of this work is showing the results of left Chest-Wall knowledge-based planning (KBP) standardization and implementation in a LMIC setting. MATERIALS/METHODS A Halcyon Linac was installed at our clinic in Guatemala in 2019 and currently used to treat ∼90 IMRT patients daily. The standardization of IMRT procedures has been difficult for complex sites like chest-wall. The steps for standardization included: AAPM TG-263 nomenclature implementation, and planning workflows within the TPS, creation of optimization structures, and plan quality evaluation following RTOG1005 protocol hypofractionation arm. 25 plans were created manually achieving all RTOG1005 protocol constraints. The statistics were analyzed trough the model analytics tool provided by KPB manufacturer. RESULTS The results show that more plans are needed to improve the KBP model. This initial model was used to create a standardized clinical protocol in the TPS in order to continue adding plans to the KBP model database. This approach ensures that we obtain consistent plan quality and standardize our planning. The manual planning objectives achieved: CONCLUSION: The experience using the TPS to standardize our treatment planning process achieved good consistency in our planning objectives. This approach will help create KBP models according to our own clinic-specific requirements. Future work will be made to compare our LMIC KBP models with those made at a HIC academic radiotherapy center.
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Affiliation(s)
- M Ixquiac
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - E Montenegro
- Liga Nacional Contra el Cáncer / INCAN, Guatemala, Guatemala
| | - F J Reynoso
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - M Schmidt
- Washington University in St. Louis, St. Louis, MO
| | - T R Mazur
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - T Zhao
- Washington University in St. Louis, St. Louis, MO
| | - H A Gay
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | - G D Hugo
- Washington University School of Medicine in St. Louis, St. Louis, MO
| | - L E Henke
- University Hospitals, Department of Radiation Oncology, Case Western Reserve University, Cleveland, OH
| | - J M Michalski
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO
| | - A Velarde
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - V De Falla
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - F E Reyes
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - E A Ruiz Furlan
- Liga Nacional Contra el Cáncer e Instituto de Cancerología LIGA-INCAN, Guatemala City, Guatemala
| | - B Sun
- Baylor College of Medicine, Department of Radiation Oncology, Houston, TX
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Kibudde S, Kavuma A, van Rheenen J, Zhao T, Gay HA, Jhaveri PM, Sun B. Impact of AI-Based Auto-Segmentation on Radiotherapy Processes in Low and Middle-Income Countries. Int J Radiat Oncol Biol Phys 2023; 117:S80. [PMID: 37784580 DOI: 10.1016/j.ijrobp.2023.06.398] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Radiotherapy processes require significant human resources and expertise, creating a barrier for rapid deployment in low and middle-income countries (LMICs). Optimal radiotherapy (RT) relies on accurate segmentation of tumor targets and organs-at-risk (OARs) during the RT planning process. This study reports the impact of AI-based auto-segmentation on RT processes in an LMIC. MATERIALS/METHODS Ten patients including five head and neck (HN), and five prostate cancer patients were randomly selected. Their planning CT images were subjected to auto- segmentation using an FDA-approved AI software tool, and manual segmentation by an experienced radiation oncologist from a Sub-Saharan African RT clinic. The control data consisted of contours from an experienced radiation oncologist and dosimetrists at a large academic institution in the US. For prostate cases, the contours included the prostate, seminal vesicles, bladder, rectum, penile bulb, and both femoral heads. For HN cases, the contours included the brain, brainstem, bilateral eyes, lens, optic nerves, cochlea, parotids, optic chiasm, spinal cord, oral cavity, and mandible. The time to complete the segmentation was recorded for both auto-segmentation and manual contours from the LMIC. The DICE similarity coefficients were used for comparative evaluation. RESULTS The average time for contouring per patient was 2 minutes for AI compared to 57 minutes for manual contouring in the LMIC. When comparing the control data, AI pelvic contours provide a slightly better agreement than LMIC manual contours for all the OARs, with the following mean DICE coefficients for AI vs LMIC manual contours: bladder (0.971 vs 0.958), left femoral head (0.960 vs 0.949), right femoral head (0.959 vs 0.941), rectum (0.880 vs 0.867), prostate (0.836 vs 0.824), seminal vesicles (0.696 vs 0.580), and penile bulb (0.536 vs 0.528). For HN contours, AI provide a better agreement for 7 of 11 OARs than the LMIC manual contours, with the following mean DICE coefficients: brain (0.972 vs 0.982), mandible (0.877 vs 0.925), right parotid (0.847 vs 0.800), left parotid (0.798 vs 0.792), spinal cord (0.837 vs 0.821), left eye (0.875 vs 0.832), right eye (0.867 vs 0.836), brainstem (0.866 vs 852), oral cavity (0.796 vs 0.787), left lens (0.650 vs 0.729) and right lens (0.671 vs 0.682). Neither AI contours nor LMIC manual contours had good agreement with the control data (<0.600) for optic nerves, chiasm, and cochlea due to their small volumes. CONCLUSION AI-based auto-segmentation tools are capable of producing contours of comparable quality to those generated by manual segmentation for both pelvic and HN cancer patients in LMICs, while also resulting in substantial time savings. AI-based auto-segmentation holds tremendous potential for improving radiotherapy care in LMICs with limited sources.
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Affiliation(s)
- S Kibudde
- Uganda Cancer Institute, Kampala, Uganda
| | - A Kavuma
- Uganda Cancer Institute, Kampala, Uganda
| | - J van Rheenen
- Global Health Center, Institute for Public Health, Washington University in St. Louis, St. Louis, MO
| | - T Zhao
- Washington University in St. Louis, St. Louis, MO
| | - H A Gay
- Washington University School of Medicine in St. Louis, Department of Radiation Oncology, St. Louis, MO
| | | | - B Sun
- Baylor College of Medicine, Department of Radiation Oncology, Houston, TX
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Sun B, Wang L, Guo W, Chen S, Ma Y, Wang D. New treatment methods for myocardial infarction. Front Cardiovasc Med 2023; 10:1251669. [PMID: 37840964 PMCID: PMC10569499 DOI: 10.3389/fcvm.2023.1251669] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 08/31/2023] [Indexed: 10/17/2023] Open
Abstract
For a long time, cardiovascular clinicians have focused their research on coronary atherosclerotic cardiovascular disease and acute myocardial infarction due to their high morbidity, high mortality, high disability rate, and limited treatment options. Despite the continuous optimization of the therapeutic methods and pharmacological therapies for myocardial ischemia-reperfusion, the incidence rate of heart failure continues to increase year by year. This situation is speculated to be caused by the current therapies, such as reperfusion therapy after ischemic injury, drugs, rehabilitation, and other traditional treatments, that do not directly target the infarcted myocardium. Consequently, these therapies cannot fundamentally solve the problems of myocardial pathological remodeling and the reduction of cardiac function after myocardial infarction, allowing for the progression of heart failure after myocardial infarction. Coupled with the decline in mortality caused by acute myocardial infarction in recent years, this combination leads to an increase in the incidence of heart failure. As a new promising therapy rising at the beginning of the twenty-first century, cardiac regenerative medicine provides a new choice and hope for the recovery of cardiac function and the prevention and treatment of heart failure after myocardial infarction. In the past two decades, regeneration engineering researchers have explored and summarized the elements, such as cells, scaffolds, and cytokines, required for myocardial regeneration from all aspects and various levels day and night, paving the way for our later scholars to carry out relevant research and also putting forward the current problems and directions for us. Here, we describe the advantages and challenges of cardiac tissue engineering, a contemporary innovative therapy after myocardial infarction, to provide a reference for clinical treatment.
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Affiliation(s)
- Bingbing Sun
- Department of Critical Care Medicine, The Air Force Characteristic Medical Center, Air Force Medical University, Beijing, China
| | - Long Wang
- Department of General Internal Medicine, Beijing Dawanglu Emergency Hospital, Beijing, China
| | - Wenmin Guo
- Department of Critical Care Medicine, The Air Force Characteristic Medical Center, Air Force Medical University, Beijing, China
| | - Shixuan Chen
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
| | - Yujie Ma
- Department of Critical Care Medicine, The Air Force Characteristic Medical Center, Air Force Medical University, Beijing, China
| | - Dongwei Wang
- Department of Cardiac Rehabilitation, Zhengzhou Central Hospital affiliated to Zhengzhou University, Zhengzhou, China
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21
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Liu M, Sun S, Meng Y, Wang L, Liu H, Shi W, Zhang Q, Xu W, Sun B, Xu J. Benzophenanthridine Alkaloid Chelerythrine Elicits Necroptosis of Gastric Cancer Cells via Selective Conjugation at the Redox Hyperreactive C-Terminal Sec 498 Residue of Cytosolic Selenoprotein Thioredoxin Reductase. Molecules 2023; 28:6842. [PMID: 37836684 PMCID: PMC10574601 DOI: 10.3390/molecules28196842] [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: 08/30/2023] [Revised: 09/23/2023] [Accepted: 09/24/2023] [Indexed: 10/15/2023] Open
Abstract
Targeting thioredoxin reductase (TXNRD) with low-weight molecules is emerging as a high-efficacy anti-cancer strategy in chemotherapy. Sanguinarine has been reported to inhibit the activity of TXNRD1, indicating that benzophenanthridine alkaloid is a fascinating chemical entity in the field of TXNRD1 inhibitors. In this study, the inhibition of three benzophenanthridine alkaloids, including chelerythrine, sanguinarine, and nitidine, on recombinant TXNRD1 was investigated, and their anti-cancer mechanisms were revealed using three gastric cancer cell lines. Chelerythrine and sanguinarine are more potent inhibitors of TXNRD1 than nitidine, and the inhibitory effects take place in a dose- and time-dependent manner. Site-directed mutagenesis of TXNRD1 and in vitro inhibition analysis proved that chelerythrine or sanguinarine is primarily bound to the Sec498 residue of the enzyme, but the neighboring Cys497 and remaining N-terminal redox-active cysteines could also be modified after the conjugation of Sec498. With high similarity to sanguinarine, chelerythrine exhibited cytotoxic effects on multiple gastric cancer cell lines and suppressed the proliferation of tumor spheroids derived from NCI-N87 cells. Chelerythrine elevated cellular levels of reactive oxygen species (ROS) and induced endoplasmic reticulum (ER) stress. Moreover, the ROS induced by chelerythrine could be completely suppressed by the addition of N-acetyl-L-cysteine (NAC), and the same is true for sanguinarine. Notably, Nec-1, an RIPK1 inhibitor, rescued the chelerythrine-induced rapid cell death, indicating that chelerythrine triggers necroptosis in gastric cancer cells. Taken together, this study demonstrates that chelerythrine is a novel inhibitor of TXNRD1 by targeting Sec498 and possessing high anti-tumor properties on multiple gastric cancer cell lines by eliciting necroptosis.
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Affiliation(s)
- Minghui Liu
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Shibo Sun
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Yao Meng
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Ling Wang
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Haowen Liu
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Wuyang Shi
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Qiuyu Zhang
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
| | - Weiping Xu
- School of Ocean Science and Technology (OST), Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), Dalian University of Technology, Panjin 124221, China
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering (CE), Dalian University of Technology, Dalian 116023, China
| | - Jianqiang Xu
- School of Life and Pharmaceutical Sciences (LPS), Panjin Institute of Industrial Technology (PIIT), Dalian University of Technology, Panjin 124221, China
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22
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Ma Y, Guo Y, Liu S, Hu Y, Yang C, Cheng G, Xue C, Zuo YY, Sun B. pH-Mediated Mucus Penetration of Zwitterionic Polydopamine-Modified Silica Nanoparticles. Nano Lett 2023; 23:7552-7560. [PMID: 37494635 DOI: 10.1021/acs.nanolett.3c02128] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Zwitterionic polymers have emerged as promising trans-mucus nanocarriers due to their superior antifouling properties. However, for pH-sensitive zwitterionic polymers, the effect of the pH microenvironment on their trans-mucus fate remains unclear. In this work, we prepared a library of zwitterionic polydopamine-modified silica nanoparticles (SiNPs-PDA) with an isoelectric point of 5.6. Multiple-particle tracking showed that diffusion of SiNPs-PDA in mucus with a pH value of 5.6 was 3 times faster than that in mucus with pH value 3.0 or 7.0. Biophysical analysis found that the trans-mucus behavior of SiNPs-PDA was mediated by hydrophobic and electrostatic interactions and hydrogen bonding between mucin and the particles. Furthermore, the particle distribution in the stomach, intestine, and lung demonstrated the pH-mediated mucus penetration behavior of the SiNPs-PDA. This study reveals the pH-mediated mucus penetration behavior of zwitterionic nanomaterials, which provides rational design strategies for zwitterionic polymers as nanocarriers in various mucus microenvironments.
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Affiliation(s)
- Yubin Ma
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yiyang Guo
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Shan Liu
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Yu Hu
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Cheng Yang
- School of Chemistry, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Gang Cheng
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Yi Y Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
- Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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23
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Yang YC, Shen Y, Wang XD, Jiang Y, Qiu QH, Li J, Yu SQ, Ke X, Liu F, Xu YT, Lou HF, Wang HT, Yu GD, Xu R, Meng J, Meng CD, Sun N, Chen JJ, Zeng M, Xie ZH, Sun YQ, Tang J, Zhao KQ, Zhang WT, Shi ZH, Xu CL, Yang YL, Lu MP, Ye HP, Wei X, Sun B, An YF, Sun YN, Gu YR, Zhang TH, Ba L, Yang QT, Ye J, Xu Y, Li HB. [Expert consensus on the prevention and treatment of adverse reactions in subcutaneous immunotherapy(2023, Chongqing)]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:643-656. [PMID: 37455109 DOI: 10.3760/cma.j.cn115330-20221111-00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Affiliation(s)
- Y C Yang
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Y Shen
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - X D Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y Jiang
- Department of Otolaryngology Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Q H Qiu
- Department of Otolaryngology Head and Neck Surgery, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - J Li
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China, Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-sen University, Nanning 530029, China
| | - S Q Yu
- Department of Otolaryngology Head and Neck Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - X Ke
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - F Liu
- Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y T Xu
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou 350004, China
| | - H F Lou
- Department of Otorhinolaryngology Head and Neck Surgery, Eye, Ear, Nose and Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - H T Wang
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - G D Yu
- Department of Otorhinolaryngology, Affiliated Hospital of Guizhou Medical University, Guiyang 550001, China
| | - R Xu
- Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China, Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-sen University, Nanning 530029, China
| | - J Meng
- Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - C D Meng
- Department of Otolaryngology Head and Neck Surgery, China Japan Union Hospital of Jilin University, Changchun 130033, China
| | - N Sun
- Department of Otolaryngology, Huadong Hospital, Fudan University, Shanghai 200040, China
| | - J J Chen
- Department of Otolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - M Zeng
- Department of Otolaryngology, Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Z H Xie
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Y Q Sun
- Department of Otolaryngology, the Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen 518170, China
| | - J Tang
- Department of Otorhinolaryngology, Affiliated First People's Hospital of Foshan City, Sun Yat-sen University, Foshan 528000, China
| | - K Q Zhao
- Department of Otorhinolaryngology Head and Neck Surgery, Eye, Ear, Nose and Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - W T Zhang
- Department of Otolaryngology Head and Neck Surgery, the Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Z H Shi
- Department of Otolaryngology Head and Neck Surgery and Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - C L Xu
- Department of Otolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, China
| | - Y L Yang
- Department of 1st Otolaryngology, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - M P Lu
- Department of Otolaryngology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H P Ye
- Department of Otolaryngology, Guizhou Province Hospital, Guiyang 550002, China
| | - X Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Haikou 570311, China
| | - B Sun
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Y F An
- Department of Otorhinolaryngology Head and Neck Surgery, Shanxi Medical University Affiliated Second Hospital, Taiyuan 030001, China
| | - Y N Sun
- Department of Otolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Y R Gu
- Department of Otorhinolaryngology Head and Neck Surgery, Eye, Ear, Nose and Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
| | - T H Zhang
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - L Ba
- Department of Otolaryngology Head and Neck Surgery, People's Hospital of Tibet Autonomous Region, Lasa 850000, China
| | - Q T Yang
- Department of Otolaryngology Head and Neck Surgery and Department of Allergy, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - J Ye
- Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Y Xu
- Department of Otolaryngology, Head and Neck Surgery, Renmin Hospital, Wuhan University, Wuhan 430060, China
| | - H B Li
- Department of Otorhinolaryngology Head and Neck Surgery, Eye, Ear, Nose and Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
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Bai R, Lu TQ, Sun B. [Evolution and progress of surgical intervention strategies for acute pancreatitis]. Zhonghua Wai Ke Za Zhi 2023; 61:556-561. [PMID: 37402683 DOI: 10.3760/cma.j.cn112139-20221209-00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Acute pancreatitis is one of the common surgical acute abdominal diseases. Since people first recognized acute pancreatitis in the middle of the nineteenth century, a diversified minimally invasive treatment model with standardization has been formed today. According to the main line of surgical intervention of acute pancreatitis treatment,this period can be roughly divided into five stages:exploration stage, conservative treatment stage, pancreatectomy stage, debridement and drainage of the pancreatic necrotic tissue stage, and minimally invasive treatment as the first choice led by the multidisciplinary team mode stage. Throughout history, the evolution and progress of surgical intervention strategies for acute pancreatitis cannot be separated from the progress of science and technology, the update of treatment concepts and the further understanding of the pathogenesis. This article will summarize the surgical characteristics of acute pancreatitis treatment at each stage to explain the development of surgical treatment of acute pancreatitis,to help investigate the development of surgical treatment of acute pancreatitis in the future.
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Affiliation(s)
- R Bai
- Department of Pancreatic and Biliary Surgery,the First Affiliated Hospital of Harbin Medical University & Key Laboratory of Hepatosplenic Surgery,Ministry of Education,Harbin 150001,China
| | - T Q Lu
- Department of Pancreatic and Biliary Surgery,the First Affiliated Hospital of Harbin Medical University & Key Laboratory of Hepatosplenic Surgery,Ministry of Education,Harbin 150001,China
| | - B Sun
- Department of Pancreatic and Biliary Surgery,the First Affiliated Hospital of Harbin Medical University & Key Laboratory of Hepatosplenic Surgery,Ministry of Education,Harbin 150001,China
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Li Y, Li XY, Tang X, Wang R, Zhang CY, Wang SQ, Yuan X, Wang L, Tong ZH, Sun B. [Application of veno-arterio-venous extracorporeal membrane oxygenation in patients with critical respiratory failure combined with refractory shock]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:565-571. [PMID: 37278170 DOI: 10.3760/cma.j.cn112147-20221008-00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To preliminarily analyze the application experience of veno-arterio-venous extracorporeal membrane oxygenation (VAV-ECMO).The VAV-ECMO is a rescue strategy for patients with extremely critical respiratory failure combined with refractory shock. Methods: From February 2016 to February 2022, the characteristics and outcomes of patients who were started on either veno-venous or veno-arterial ECMO due to respiratory or hemodynamic failure, and then converted to VAV-ECMO in respiratory intensive care unit (ICU) of Beijing Chaoyang Hospital were analyzed. Results: A total of 15 patients underwent VAV-ECMO, aged 53 (40, 65) years, and 11 of whom were male. Within the group, VV-ECMO was initially used in 12 patients due to respiratory failure, but then VAV-ECMO was used due to cardiogenic shock (7/12) and septic shock (4/12), while VAV-ECMO was established in two patients due to lung transplantation. One patient was diagnosed with pneumonia complicated by septic shock, which was initially determined to be VA-ECMO, but then switched to VAV-ECMO because it was difficult to maintain oxygenation. The time from the establishment of VV or VA-ECMO to the switch to VAV-ECMO was 3 (1, 5) days and the VAV-ECMO support time was 5 (2, 8) days. ECMO-related complications were bleeding, mostly in the digestive tract (n=4) and airway hemorrhage (n=4), without intracranial hemorrhage, and poor arterial perfusion of the lower limbs (n=2). Among these 15 patients, the overall ICU mortality was 53.3%. The mortality of patients who received VAV-ECMO due to septic shock and cardiogenic shock was 100% (4/4) and 42.8% (3/7), respectively. Two patients who received VAV-ECMO due to lung transplantation all survived. Conclusion: VAV-ECMO may be a safe and effective treatment for carefully selected patients with critical respiratory failure associated with cardiogenic shock or end-stage lung disease lung transplantation transition, however, patients with septic shock may benefit the least.
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Affiliation(s)
- Y Li
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - X Y Li
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - X Tang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - R Wang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - C Y Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - S Q Wang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - X Yuan
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - L Wang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - Z H Tong
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
| | - B Sun
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing Engineering Research Centre for Diagnosis and Treatment of Respiratory and Critical Care Medicine (Beijing Chaoyang Hospital), Beijing 100020,China
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Yu Y, Li B, Zhou C, Ma S, Dang Y, Zhu M, Xiang M, Sun B. Sorption in soils and bioaccumulation potential of 2,2'-DiBBPA. Ecotoxicol Environ Saf 2023; 258:114969. [PMID: 37167736 DOI: 10.1016/j.ecoenv.2023.114969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/13/2023]
Abstract
2,2'-Dibromobisphenol A (2,2'-DiBBPA) is frequently detected in the environment. However, the mobility of 2,2'-DiBBPA in the soil environment is poorly understood. The present study examined the effects of soil components such as the NaClO-resistant fraction, dithionite-citrate-bicarbonate -demineralized fraction, humin fraction, black carbon, DOC-removed fraction, exogenous dissolved organic carbon and heavy metal cations on the adsorption of 2,2'-DiBBPA on several types of agricultural soils. The adsorption isotherms on soils and soil components were well fitted to the linear isotherm equation. 2,2'-DiBBPA sorption onto soils was dominated by soil organic matter content (SOM) and affected by exogenous dissolved organic carbon. Linear regression relationships between adsorption capacity (Kd) and soil characteristics were evaluated to predict partitioning of 2,2'-DiBBPA. Black carbon played a predominant role in the adsorption of 2,2'-DiBBPA. Heavy metal ions significantly inhibited the adsorptive behavior of 2,2'-DiBBPA under alkaline conditions. Semiempirical linear relationships were observed between biota-sediment accumulation factors (1.18-2.47)/logarithm of bioconcentration factors (BCFs, 2.49-2.52) of 2,2'-DiBBPA in lugworms and Kd. These results allow for the prediction of the bioaccumulation of 2,2'-DiBBPA in other soils. Furthermore, values of log BCF > 1.0 indicate the preferential bioaccumulation of 2,2'-DiBBPA in biota. These data are of significance for understanding the migration of 2,2'-DiBBPA in agricultural soils and bioaccumulation in organisms.
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Affiliation(s)
- Yunjiang Yu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China.
| | - Beibei Li
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China; School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Chang Zhou
- College of Environmental and Chemical Engineering, Chongqing Three Gorges University, Wanzhou 404100, China
| | - Shexia Ma
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Yao Dang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Ming Zhu
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Mingdeng Xiang
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China
| | - Bingbing Sun
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510530, China.
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Patel S, Knierim J, Goldstein D, Lamba H, Sun B, Schmitto J, Lowes B, Shah P, Kanwar M, Wald J, Ravichandran A, MacGowan G, Ton V, Silvestry S, Sera F, Farooq M, Jorde U, Stehlik J, Selzman C, Potapov E, Drakos S. Long-Term Clinical Trajectory after Durable Lvad Weaning: An International Registry Report. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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28
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Stehlik J, Schroder J, Pinney S, Patel C, D'Alessandro D, Goldstein D, Jorde U, Patel S, Mani D, Esmailian F, Kobashigawa J, Takeda K, Uriel N, Pham S, Patel P, Kai M, Sun B, Shah A, Ono M, Couper G, DeNofrio D, Vest A, Joyce D, DeVore A, Mallidi H, Itoh A, Mehra M, Givertz M, Milano C, Farr M. First Report of the Transmedics Organ Care System Heart Perfusion Registry. A Multi-Institutional Outcomes Analysis. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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29
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Crespo R, Khan N, Mudy K, Bae A, Samara M, Eckman P, Sun B, Hryniewicz K. Proactive Right Ventricular Assist Device Placement in Patients Undergoing Left Ventricular Assist Device Implantation Leads to Improved Short and Long Term Survival. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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30
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Crespo R, Weaver C, Bennett M, Sun B, Eckman P, Samara M, Hryniewicz K. Myocardial Recovery Profile in Patients Following Left Ventricular Assist Device Explantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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31
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Milano C, Schroder J, Farr M, DeVore A, D'Alessandro D, Goldstein D, Jorde U, Patel S, Daneshmand M, Pinney S, Esmailian F, Kobashigawa J, Takeda K, Uriel N, Pham S, Patel P, Kai M, Sun B, Shah A, Ono M, Couper G, DeNofrio D, Vest A, Joyce D, Mallidi H, Itoh A, Mehra M, Givertz M, Patel C, Stehlik J. Demographics and Outcomes of Clinical Trial vs Initial Post-Approval Use of Transmedics Organ Care System Heart. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Sun B, Li M. [The mechanism, inducement and long-term effects of acquired weakness in intensive care units]. Zhonghua Yi Xue Za Zhi 2023; 103:1-5. [PMID: 36977562 DOI: 10.3760/cma.j.cn112137-20221117-02413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
With the development of critical care medicine, the case fatality rate in intensive care units (ICU) patients has decreased significantly, but most patients still suffer from the long-term problems of related complications after discharge, which seriously affects the quality of life and social integration after discharge. Complications such as ICU acquired weakness (ICU-AW) and Post-ICU Syndrome (PICS) are not uncommon throughout the treatment of severe patients. The treatment of critically ill patients should not only focus on the treatment of the disease, but also gradually extend to the whole-process physiological-psychological-social medical intervention mode in the ICU, during the stay in the general ward and after discharge. On the basis of ensuring patient safety, patients' physical and psychological status assessment in the early stage of ICU admission, and disease prevention as soon as possible, which can reduce the long-term impact on the quality of life and social work after discharge.
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Affiliation(s)
- B Sun
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University/Beijing Institute of Respiratory Medicine/Beijing Key laboratory of Respiratory and Pulmonary Circulation Disorders/Beijing Engineering Research Center for Diagnosis and Treatment of China, Beijing 100020, China
| | - M Li
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University/Beijing Institute of Respiratory Medicine/Beijing Key laboratory of Respiratory and Pulmonary Circulation Disorders/Beijing Engineering Research Center for Diagnosis and Treatment of China, Beijing 100020, China
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Jiang Y, Li X, Qian F, Sun B, Wang X, Zhang Y, Zhang D, Geng M, Xie Z, Yang S. Fine-tuning bacterial cyclic di-AMP production for durable antitumor effects through the activation of the STING pathway. Research 2023; 6:0102. [PMID: 37011280 PMCID: PMC10065788 DOI: 10.34133/research.0102] [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] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023]
Abstract
The stimulator of interferon genes (STING) protein is an important and promising innate immune target for tumor therapy. However, the instability of the agonists of STING and their tendency to cause systemic immune activation is a hurdle. The STING activator, cyclic di-adenosine monophosphate (CDA), produced by the modified Escherichia coli Nissle 1917, shows high antitumor activity and effectively reduces the systemic effects of the "off-target" caused by the activation of the STING pathway. In this study, we used synthetic biological approaches to optimize the translation levels of the diadenylate cyclase that catalyzes CDA synthesis in vitro. We developed 2 engineered strains, CIBT4523 and CIBT4712, for producing high levels of CDA while keeping their concentrations within a range that did not compromise the growth. Although CIBT4712 exhibited stronger induction of the STING pathway corresponding to in vitro CDA levels, it had lower antitumor activity than CIBT4523 in an allograft tumor model, which might be related to the stability of the surviving bacteria in the tumor tissue. CIBT4523 exhibited complete tumor regression, prolonged survival of mice, and rejection of rechallenged tumors, thus, offering new possibilities for more effective tumor therapy. We showed that the appropriate production of CDA in engineered bacterial strains is essential for balancing antitumor efficacy and self-toxicity.
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Affiliation(s)
- Yu Jiang
- Shanghai Research and Development Center of Industrial Biotechnology, Shanghai, China. Huzhou Research Center of Industrial Biotechnology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Huzhou, China. Shanghai Taoyusheng Biotecho
| | - Xiyuan Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. School of Life Science and Technology, ShanghaiTech University, Shanghai, China. University of Chinese Academy of Sciences, Beijing
| | - Fenghui Qian
- Shanghai Research and Development Center of Industrial Biotechnology, Shanghai, China
| | - Bingbing Sun
- Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences
| | - Xiyuan Wang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Yan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Deqiang Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences
| | - Meiyu Geng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China. School of Life Science and Technology, ShanghaiTech University, Shanghai, China. University of Chinese Academy of Sciences, Beijing
| | | | - Sheng Yang
- Shanghai Research and Development Center of Industrial Biotechnology, Shanghai, China. Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China. Huzhou Research Center of Indus
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Wang C, Zhang H, Zhu J, Liu H, Yang Y, Sun B, Wu T, Zhang Y, Yao D. The transcription factor CEBP homolog of Penaeus vannamei contributes to WSSV replication. Fish Shellfish Immunol 2023; 134:108571. [PMID: 36736844 DOI: 10.1016/j.fsi.2023.108571] [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: 12/22/2022] [Revised: 01/19/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
The cellular transcription factors are known to play important roles in virus infection. The present study cloned and characterized a transcription factor CCAAT/Enhancer-binding protein homolog from the shrimp Penaeus vannamei (designates as PvCEBP), and explored its potential functions in white spot syndrome virus (WSSV) infection. PvCEBP has an open reading frame (ORF) of 864 bp encoding a putative protein of 287 amino acids, which contained a highly C-terminal conserved bZIP domain. Phylogenetic tree analysis showed that PvCEBP was evolutionarily clustered with invertebrate CEBPs and closely related to the CEBP of Homarus americanus. Quantitative real-time PCR (qPCR) analysis revealed that PvCEBP was expressed in all examined shrimp tissues, with transcript levels increased in shrimp hemocytes and gill upon WSSV challenge. Furthermore, knockdown of PvCEBP mediated by RNA interference significantly decreased the expression of WSSV genes and viral loads, while enhanced the shrimp survival rate under WSSV challenge. In silico prediction and reporter gene assays demonstrated that PvCEBP could activate the promoter activity of the viral immediate-early gene ie1. Collectively, our findings suggest that PvCEBP is annexed by WSSV to promote its propagation by enhancing the expression of viral immediate-early genes.
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Affiliation(s)
- Chuanqi Wang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Huimin Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Jinghua Zhu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Haiping Liu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Yiqing Yang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Bingbing Sun
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Tingchu Wu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Yueling Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, 515063, China
| | - Defu Yao
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou, 515063, China.
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Sun B, Liu Z, Tchetgen Tchetgen E. Semiparametric Efficient G-estimation with Invalid Instrumental Variables. Biometrika 2023. [DOI: 10.1093/biomet/asad011] [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: 02/17/2023] Open
Abstract
Summary
The instrumental variable method is widely used in the health and social sciences for identification and estimation of causal effects in the presence of potential unmeasured confounding. In order to improve efficiency, multiple instruments are routinely used, leading to concerns about bias due to possible violation of the instrumental variable assumptions. To address this concern, we introduce a new class of G-estimators that are guaranteed to remain consistent and asymptotically normal for the causal effect of interest provided that a set of at least γ out of K candidate instruments are valid, for γ≤K set by the analyst ex ante, without necessarily knowing the identity of the valid and invalid instruments. We provide formal semiparametric efficiency theory supporting our results. Both simulation studies and applications to the UK Biobank data demonstrate the superior empirical performance of our estimators compared to competing methods.
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Affiliation(s)
- B Sun
- National University of Singapore Department of Statistics and Data Science, , 6 Science Drive 2, 117546 Singapore
| | - Z Liu
- Columbia University Department of Biostatistics, , 722 West 168th St., New York, New York 10032, U.S.A
| | - E Tchetgen Tchetgen
- University of Pennsylvania Department of Statistics and Data Science, The Wharton School, , 265 South 37th Street, Philadelphia, Pennsylvania 19104, U.S.A
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Guo Y, Ma Y, Chen X, Li M, Ma X, Cheng G, Xue C, Zuo YY, Sun B. Mucus Penetration of Surface-Engineered Nanoparticles in Various pH Microenvironments. ACS Nano 2023; 17:2813-2828. [PMID: 36719858 DOI: 10.1021/acsnano.2c11147] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [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: 06/18/2023]
Abstract
The penetration behavior of nanoparticles in mucous depends on physicochemical properties of the nanoparticles and the mucus microenvironment, due to particle-mucin interactions and the presence of the mucin mesh space filtration effect. To date, it is still unclear how the surface properties of nanoparticles influence their mucus penetration behaviors in various physiological and pathophysiological conditions. In this study, we have prepared a comprehensive library of amine-, carboxyl-, and PEG-modified silica nanoparticles (SNPs) with controlled surface ligand densities. Using multiple particle tracking, we have studied the mechanism responsible for the mucus penetration behaviors of these SNPs. It was found that PEG- and amine-modified SNPs exhibited pH-independent immobilization under iso-density conditions, while carboxyl-modified SNPs exhibited enhanced movement only in weakly alkaline mucus. Biophysical characterizations demonstrated that amine- and carboxyl-modified SNPs were trapped in mucus due to electrostatic interactions and hydrogen bonding with mucin. In contrast, high-density PEGylated surface formed a brush conformation that shields particle-mucin interactions. We have further investigated the surface property-dependent mucus penetration behavior using a murine airway distribution model. This study provides insights for designing efficient transmucosal nanocarriers for prevention and treatment of pulmonary diseases.
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Affiliation(s)
- Yiyang Guo
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Yubin Ma
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Xin Chen
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Min Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Xuehu Ma
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Gang Cheng
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois60607, United States
| | - Changying Xue
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
| | - Yi Y Zuo
- Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, Hawaii96822, United States
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, 116024, Dalian, China
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Li Y, Sun B, Liu Y, Zhang Z, Shen Y, Wang H, Liu X, Xie W. Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis. Polymers (Basel) 2023; 15:polym15010226. [PMID: 36616575 PMCID: PMC9823886 DOI: 10.3390/polym15010226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023] Open
Abstract
Pseudo-semi interpenetrating polymer networks (pseudo-semi IPNs) are a special example of topological isomerism in macromolecules, which have attracted significant attention in recent years with a high potential in a variety of engineering applications of polymeric materials. In this article, pseudo-semi IPNs were synthetized by sequential polymerization of thermoplastic polymers (TPEs) in the presence of thermosetting elastomer (TSEs) with contents of 10, 20, 30, 40 and 50 wt.% in a vacuum oven at 60 °C for about 72 h. In addition, this article describes a method for researching the elastic modulus, effective crosslinking density and physical crosslinking density of TSEs and pseudo-semi IPNs. The inherent interactions and entanglements of pseudo-semi IPNs were discussed by analyzing the changes in elastic modulus and effective crosslinking density at different temperatures. The results show that after the TPE was added to the TSE matrix as a plastic-reinforced material, the ductility increased from 89.6% to 491%, the effective crosslinking density was increased by 100% at high temperatures and the strength of the material matrix was significantly improved. Two physical events take place in our pseudo-semi IPNs as result of energy dissipation and polymeric chains mobility.
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Affiliation(s)
- Yajin Li
- Correspondence: ; Tel.: +86-029-88291191
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Otten A, van der Meer F, Gibbs S, Sun B, Boon R. 198 Novel, functional long noncoding RNAs with skin-ageing-associated expression changes control epidermal homeostasis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.209] [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: 11/19/2022]
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39
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De Falla V, Figueroa F, Michalski J, van Rheenen J, Gay H, Ruiz Furlan E, Kihn A, Hugo G, Sobrevilla L, Garcia M, Davila S, Powderly W, Velarde A, Sun B, Lee K, Huang Y, Ma K, Najera K, García C, Reyes F, Ixquiac M, Henke L. Quality of Life of Patients Treated with Radiotherapy in an Upper Middle-Income Country. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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40
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Kavuma A, Kibudde S, Schmidt M, Zhao T, Gay H, Michalski J, Hugo G, Li B, van Rheenen J, Vanchinbazar E, Minjgee M, N E, Ssewamala F, Velarde A, Furlan EAR, De Falla V, Ixquiac M, Reyes F, Henke L, Sun B. Lessons Learned from Remote Global Radiation Oncology Education and Training on IMRT for Low- and Middle-Income Countries. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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41
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Zhao ZL, Tang X, He CW, Liu YL, Li XY, Wang R, Li Y, Cao SY, Sun B, Tong ZH. [Clinical characteristics and outcomes of acute respiratory distress syndrome caused by severe Chlamydia psittaci pneumonia]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:1015-1021. [PMID: 36207958 DOI: 10.3760/cma.j.cn112147-20220221-00139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the clinical characteristics and outcomes of acute respiratory distress syndrome (ARDS) caused by Chlamydia psittaci pneumonia. Methods: From June 2016 to January 2021, 10 cases were diagnosed as severe Chlamydia psittaci pneumonia induced ARDS in Intensive Care Unit of Respiratory and Critical Care Medicine Department (RICU) of Beijing Chao-Yang Hospital Affiliated to Capital Medical University. We collected the clinical data including clinical features, laboratory tests, imaging and outcomes of the patients. Results: The pathogenic diagnosis was confirmed by metagenomic Next-generation Sequencing (mNGS) in these 10 patients, with a median age of 59 (46, 67) years. In addition to high fever, cough and dyspnea, the patients also had multiple organ involvement. Six patients had elevated peripheral leukocyte count, 10 cases had increased type B natriuretic peptide, 7 cases had increased aspartate aminotransferase/alanine aminotransferase, 9 cases had hyponatremia and 3 cases had elevated creatinine. The imaging findings were bilateral consolidation with air bronchogram and infiltrates, and pleural effusion were found in 5 cases. All cases were combined with respiratory failure. Six patients received invasive mechanical ventilation. Nine patients received moxifloxacin and one patient was administrated with Azithromycin. All the patients were improved and discharged after the treatment, and the mean duration of RICU stay was 13.5 (11, 16.7) days. One month follow-up of nine patients showed significant improvement in lung lesions. Conclusions: Severe Chlamydia psittiaci pneumonia may be complicated with respiratory failure and/or multiple organ involvement. For severe pneumonia with an exposure history of sick birds, the possibility of Chlamydia psittaci infection should be considered. mNGS may help etiological diagnosis. All patients in this study had a good prognosis after targeted treatment.
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Affiliation(s)
- Z L Zhao
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - X Tang
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - C W He
- Department of Respiratory and Critical Care Medicine, Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry, Beijing 100093, China
| | - Y L Liu
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - X Y Li
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - R Wang
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Y Li
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - S Y Cao
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - B Sun
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Z H Tong
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
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Shen Y, Xie W, Sun B, Liu Y, Li Y, Cao Z, Jian Y, Huang Z. Effect of Mo Content on In-Situ Anisometric Grains Growth and Mechanical Properties of Mo 2FeB 2-Based Cermets. Materials (Basel) 2022; 15:6729. [PMID: 36234071 PMCID: PMC9573301 DOI: 10.3390/ma15196729] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
Mo2FeB2-based cermets have wide applications in fields of wear resistance, corrosion resistance and heat resistance due to their simple preparation process, low-cost raw materials, and prominent mechanical properties. Herein, Mo2FeB2-based cermets with xMo (x = 43.5, 45.5, 47.5, 49.5, wt.%) were prepared by means of the vacuum liquid phase sintering technique. Investigations on the microstructure and mechanical properties of Mo2FeB2-based cermets with Mo addition were performed. Experimental results show that, with Mo content increasing, the average particle size decreases gradually, revealing that the grain coarsening of Mo2FeB2-based cermets is controlled by interface reaction. In addition, Mo2FeB2 grains gradually transform from an elongated shape to a nearly equiaxed shape. The improvement of Mo2FeB2 hard phase on the morphology is mainly due to the inhibition of solution-precipitation reaction by increasing Mo. Furthermore, the relative density of cermets decreases due to the reduced Fe content. When Mo content is 47.5 wt.%, a relatively small grain size of Mo2FeB2 is obtained (about 2.03 μm). Moreover, with the increase in Mo content, hardness and transverse rupture strength (TRS) of Mo2FeB2-based cermets increase firstly and then decrease. Whereas, with increasing Mo content, the fracture toughness deteriorates gradually. When Mo content is 47.5 wt.%, the comprehensive mechanical properties of cermets are the best. The optimal raw material ratio for the preparation of Mo2FeB2-based cermets in this study is determined to be 47.5 wt.% Mo-6.0 wt.% B-Fe.
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Affiliation(s)
- Yupeng Shen
- Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Wuxi Xie
- Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Bingbing Sun
- Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Yunfei Liu
- Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Yajin Li
- Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
| | - Zhen Cao
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yongxin Jian
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhifu Huang
- State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
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Abstract
E-waste recycling has been a hot topic around the world. This Feature revisits the issues raised by our previous Feature 10 years ago, i.e., the environmental, economic, and social benefits of e-waste recycling, using China as an example. The decadal journey of e-waste recycling has witnessed a giant leap from haphazard disposal initially to regulated disassembly presently. Specific successful stories include cleaned environment and reduced human exposure, significant advantages of urban mining over mineral mining, additional employment opportunities, and improved legislation system related to e-waste recycling. Strict legislation systems related to e-waste management based on the principle of Extended Producer Responsibility are key to the sustainable development of the e-waste recycling sector in China. The experiences and lessons learned in China would provide valuable guidelines for other developing countries.
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Affiliation(s)
- Bingbing Sun
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
| | - Jerald L Schnoor
- Department of Civil and Environmental Engineering, University of Iowa, Iowa City, Iowa 52242, United States
| | - Eddy Y Zeng
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, China
- Research Center of Low Carbon Economy for Guangzhou Region, Key Laboratory of Philosophy and Social Science in Guangdong Province of Community of Life for Man and Nature, Jinan University, Guangzhou 510632, China
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44
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Xu X, Li G, Sun B, Zuo YY. S2 Subunit of SARS-CoV-2 Spike Protein Induces Domain Fusion in Natural Pulmonary Surfactant Monolayers. J Phys Chem Lett 2022; 13:8359-8364. [PMID: 36043851 PMCID: PMC9454269 DOI: 10.1021/acs.jpclett.2c01998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Pulmonary surfactant has been attempted as a supportive therapy to treat COVID-19. Although it is mechanistically accepted that the fusion peptide in the S2 subunit of the S protein plays a predominant role in mediating viral fusion with the host cell membrane, it is still unknown how the S2 subunit interacts with the natural surfactant film. Using combined bio-physicochemical assays and atomic force microscopy imaging, it was found that the S2 subunit inhibited the biophysical properties of the surfactant and induced microdomain fusion in the surfactant monolayer. The surfactant inhibition has been attributed to membrane fluidization caused by insertion of the S2 subunit mediated by its fusion peptide. These findings may provide novel insight into the understanding of bio-physicochemical mechanisms responsible for surfactant interactions with SARS-CoV-2 and may have translational implications in the further development of surfactant replacement therapy for COVID-19 patients.
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Affiliation(s)
- Xiaojie Xu
- Department
of Mechanical Engineering, University of
Hawaii at Manoa, Honolulu 96822, Hawaii, United States
| | - Guangle Li
- Department
of Mechanical Engineering, University of
Hawaii at Manoa, Honolulu 96822, Hawaii, United States
| | - Bingbing Sun
- State
Key Laboratory of Fine Chemicals and School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yi Y. Zuo
- Department
of Mechanical Engineering, University of
Hawaii at Manoa, Honolulu 96822, Hawaii, United States
- Department
of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu 96826, Hawaii, United States
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45
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Chen S, Sun B. 778 Regulation of human cutaneous wound healing by the FAAHP1 pseudogene. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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46
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Cui L, Wang X, Zhao X, Sun B, Xia T, Hu S. CeO 2 nanoparticles induce pulmonary fibrosis via activating S1P pathway as revealed by metabolomics. Nano Today 2022; 45:101559. [PMID: 36910843 PMCID: PMC9997866 DOI: 10.1016/j.nantod.2022.101559] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
CeO2 nanoparticles (NPs) have been shown to cause lung fibrosis, however, the exact underlying molecular mechanisms are poorly understood. In this study, we have conducted a mass spectrometry-based global metabolomic analysis of human bronchial epithelial BEAS-2B cells treated by CeO2 NPs with different aspect ratios and assessed their toxicity on the bronchial epithelial cells by various cell-based functional assays. Although CeO2 NPs at doses ranging from 12.5 μg/mL to 25 μg/mL displayed low cytotoxicity on the bronchial epithelial cells, the metabolomic analysis revealed a number of metabolites in the cellular metabolic pathways of sphingosine-1-phosphate, fatty acid oxidation, inflammation, etc. were significantly altered by CeO2 NPs, especially those with high aspect ratios. More importantly, the robustness of metabolomics findings was further successfully validated in mouse models upon acute and chronic exposures to CeO2 NPs. Mechanistically, CeO2 NPs upregulated transforming growth factor beta-1 (TGF-β1) levels in BEAS-2B cells in an aspect ratio-dependent manner through enhancing the expression of early growth response protein 1 (EGR-1). In addition, both in vitro and in vivo studies demonstrated that CeO2 NPs significantly induced the expression of sphingosine kinase 1 (SHPK1), phosphorylated Smad2/3 and lung fibrosis markers. Moreover, targeting SPHK1, TGFβ receptor or Smad3 phosphorylation significantly attenuated the fibrosis-promoting effects of CeO2 NPs, and SPHK1-S1P pathway exerted a greater effect on the TGF-β1-mediated lung fibrosis compared to the conventional Smad2/3 pathway. Collectively, our studies have identified the metabolomic changes in BEAS-2B cells exposed to CeO2 NPs with different aspect ratios and revealed the subtle changes in metabolic activities that traditional approaches might have missed. More importantly, we have discovered a previously unknown molecular mechanism underlying CeO2 NP-induced lung fibrosis with different aspect ratios, shedding new insights on the environmental hazard potential of CeO2 NPs.
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Affiliation(s)
- Li Cui
- School of Dentistry, Jonsson Comprehensive Cancer Center, California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Xiang Wang
- Center for Environmental Implications of Nanotechnology (UC CEIN), California NanoSystems Institute, Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California 90095, United States
| | - Xinyuan Zhao
- Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China
| | - Bingbing Sun
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Tian Xia
- Center for Environmental Implications of Nanotechnology (UC CEIN), California NanoSystems Institute, Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California 90095, United States
| | - Shen Hu
- School of Dentistry, Jonsson Comprehensive Cancer Center, California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
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Patel J, McGain F, Bhatelia T, Wang S, Sun B, Monty J, Pareek V. Vented Individual Patient (VIP) Hoods for the Control of Infectious Airborne Diseases in Healthcare Facilities. Engineering (Beijing) 2022; 15:126-132. [PMID: 35721872 PMCID: PMC9197795 DOI: 10.1016/j.eng.2020.12.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/28/2020] [Accepted: 12/17/2020] [Indexed: 05/13/2023]
Abstract
By providing a means of separating the airborne emissions of patients from the air breathed by healthcare workers (HCWs), vented individual patient (VIP) hoods, a form of local exhaust ventilation (LEV), offer a new approach to reduce hospital-acquired infection (HAI). Results from recent studies have demonstrated that, for typical patient-emitted aerosols, VIP hoods provide protection at least equivalent to that of an N95 mask. Unlike a mask, hood performance can be easily monitored and HCWs can be alerted to failure by alarms. The appropriate use of these relatively simple devices could both reduce the reliance on personal protective equipment (PPE) for infection control and provide a low-cost and energy-efficient form of protection for hospitals and clinics. Although the development and deployment of VIP hoods has been accelerated by the coronavirus disease 2019 (COVID-19) pandemic, these devices are currently an immature technology. In this review, we describe the state of the art of VIP hoods and identify aspects in need of further development, both in terms of device design and the protocols associated with their use. The broader concept of individual patient hoods has the potential to be expanded beyond ventilation to the provision of clean conditions for individual patients and personalized control over other environmental factors such as temperature and humidity.
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Affiliation(s)
- J Patel
- CSIRO Energy, Melbourne, VIC 3169, Australia
| | - F McGain
- Western Health, Melbourne, VIC 3021, Australia
- School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia
- Centre for Integrated Critical Care, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - T Bhatelia
- The Western Australian School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6102, Australia
| | - S Wang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China
| | - B Sun
- The Western Australian School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6102, Australia
| | - J Monty
- Department of Mechanical Engineering, The University of Melbourne, Melbourne, VIC 3010, Australia
| | - V Pareek
- The Western Australian School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6102, Australia
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48
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Sun B, He ZQ, Wang HF, Li YR, Yang F, Cui F, Chen ZH, Huang XS. [Novel MFN2, BSCL2 and LRSAM1 variants in a cohort of Chinese patients with Charcot-Marie-Tooth disease]. Zhonghua Nei Ke Za Zhi 2022; 61:901-907. [PMID: 35922214 DOI: 10.3760/cma.j.cn112138-20211010-00686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: Charcot-Marie-Tooth disease (CMT) comprises a group of clinically and genetically heterogeneous inherited neuropathies with an estimated prevalence of 1 in 2500. This study aimed to analyze the clinical and mutational characteristics of Chinese CMT patients with MFN2, BSCL2 and LRSAM1 variants. Methods: In this study, genetic analysis was performed in 206 Chinese patients at Chinese PLA General Hospital from December 2012 to March 2020 with clinical diagnosis of CMT, and reported variants of MFN2, BSCL2 and LRSAM1 related to CMT2. Results: We reported ten MFN2 mutations in ten unrelated patients (7 male, 3 female), two of whom had positive family history. Three novel mutations were detected including c.475-2A>G (splicing); c.687dupA (p.E230Rfs*16) and c.558dupT (p.S186fs). We reported three BSCL2 mutations of four unrelated patients, including c.461C>G (p.S154W), c.461C>T(p.S154L), and novel variants of c.1309G>C (p.A437P) and c.845C>T (p.A282V). Furthermore, two novel variants of LRSAM1, including c.1930G>T (p.G644C) and c.1178T>A (p.L393Q) were detected in two unrelated patients. Conclusion: Mutational spectrum of MFN2-, BSCL2-and LRSAM1-related CMT disease is expanded with the identification of novel variants in Chinese patients.
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Affiliation(s)
- B Sun
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Geriatric Neurological Department of the Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - Z Q He
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - H F Wang
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Y R Li
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Yang
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - F Cui
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Z H Chen
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - X S Huang
- Neurological Department of the First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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49
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Takashima S, Cai P, Sun W, Bui J, Otten A, Qu K, Sun B. 459 Regulation of the keratinocyte progenitor to differentiation switch by alternative mRNA splicing. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Chen C, Wang J, Liang Z, Li M, Fu D, Zhang L, Yang X, Guo Y, Ge D, Liu Y, Sun B. Monosodium urate crystals with controlled shape and aspect ratio for elucidating the pathological progress of acute gout. Biomater Adv 2022; 139:213005. [PMID: 35882152 DOI: 10.1016/j.bioadv.2022.213005] [Citation(s) in RCA: 6] [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: 04/08/2022] [Revised: 06/09/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Gout is a self-limiting inflammatory arthritis mediated by the precipitation of monosodium urate (MSU) crystals that further activate the NLRP3 inflammasome and initiate a cascade of inflammatory events. However, the key physicochemical properties of MSU crystals that determine the acute phase of gout have not been fully identified. In this study, a library of engineered MSU crystals with well-controlled size and shape is designed to explore their proinflammatory potentials in mediating the pathological progress of gout. It is demonstrated that medium-sized long aspect ratio MSU crystals induce more prominent IL-1β production in vitro due to enhanced cellular uptake and the production of mitochondrial reactive oxygen species (mtROS). The characteristics of MSU crystals are also correlated with their inflammatory potentials in both acute peritonitis and arthritis models. Furthermore, 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) is demonstrated to inhibit MSU-induced oxidative burst by removing plasma membrane cholesterol. As a result, it attenuates the inflammatory responses both in vitro and in vivo. Additionally, antioxidant N-acetylcysteine (NAC) is shown to alleviate acute gouty symptom by suppressing oxidative stress. This study identifies the key physicochemical properties of MSU crystals that mediate the pathogenesis of gout, which sheds light on novel design strategies for the intervention of gout.
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Affiliation(s)
- Chen Chen
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.; School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Jingyun Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.; School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Zhihui Liang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.; School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Min Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.; School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Duo Fu
- School of Bioengineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Lei Zhang
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Xuecheng Yang
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Yiyang Guo
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Dan Ge
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Yang Liu
- School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Bingbing Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.; School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China..
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