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Zheng S, Guo G, Yang Z, Lu Y, Lu K, Fu W, Huang Q. Vasculogenic mimicry regulates immune infiltration and mutational status of the tumor microenvironment in breast cancer to influence tumor prognosis. Environ Toxicol 2024; 39:2948-2960. [PMID: 38308456 DOI: 10.1002/tox.24165] [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] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/02/2024] [Accepted: 01/18/2024] [Indexed: 02/04/2024]
Abstract
BACKGROUND Vasculogenic mimicry (VM) refers to the direct formation of microcirculatory ducts by invasive malignant tumors via cellular phenotypic transformation. However, there is a lack of VM-based biomarkers for breast cancer. METHODS We obtained transcriptomic expression data, single cell sequencing data, and clinical data of patients from The Cancer Genome Atlas Program (TCGA) database and GEO database, performed single cell analysis to obtain specific type annotations of breast cancer cells and analyzed their spatial expression analysis. Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene ontology (GO) analyses as well as Gene Set Enrichment Analysis (GSEA) analyses were performed to clarify the biological pathways and tumor functional enrichment relationships of the major expressed genes of VM in the breast cancer bulk data specimens. VM biomarkers were constructed. Meanwhile, the relationship between VM scores and tumor immune infiltration in breast cancer was analyzed using MCPcounter and ssGSEA methods. In addition, we assessed the specific relationship between NDRG1, a key VM gene in breast cancer, and tumor colonization, adhesion and invasion by biological experiments in breast cancer cell lines. RESULTS The main cell types of breast cancer (BRCA) samples were annotated by single cell transcriptome analysis. Most of the VM-high group was present in epithelial cells, whereas the VM-low group was present in immune and stromal cells. Multiple tumor pathways such as TGFβ p53 and MAPK were closely associated with VM-mediated breast cancer infiltration and invasion. A prognostic model of breast cancer based on VM key genes was constituted. Prognostic stratification of breast cancer was successfully achieved for the TCGA-BRCA and GSE58812 datasets. Through immune infiltration analysis, we found that differential expression of VM markers was associated with multiple immune cell regulation. In MDA-MB-231 and MDA-MB-453 cell lines, we found that the NDRG1 gene significantly promoted colony formation of breast cancer cells. CONCLUSION Our constructed VM-related gene-based model of breast cancer biology holds promise for prognostic prediction and patient stratification of breast cancer. This may provide a potentially clinically valuable aid in promoting a deeper understanding of the biological regulation of VM in breast cancer and exploring the specific mechanisms of tumor angiogenesis and breast cancer development.
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Affiliation(s)
- Shurong Zheng
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guilong Guo
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhi Yang
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yiqiao Lu
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kangkang Lu
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Weida Fu
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qidi Huang
- Department of Breast surgery, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Zhu L, Yu T, Wang W, Xu T, Geng W, Li N, Zan X. Responsively Degradable Nanoarmor-Assisted Super Resistance and Stable Colonization of Probiotics for Enhanced Inflammation-Targeted Delivery. Adv Mater 2024; 36:e2308728. [PMID: 38241751 DOI: 10.1002/adma.202308728] [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] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/09/2023] [Indexed: 01/21/2024]
Abstract
Manipulation of the gut microbiota using oral microecological preparations has shown great promise in treating various inflammatory disorders. However, delivering these preparations while maintaining their disease-site specificity, stability, and therapeutic efficacy is highly challenging due to the dynamic changes associated with pathological microenvironments in the gastrointestinal tract. Herein, a superior armored probiotic with an inflammation-targeting capacity is developed to enhance the efficacy and timely action of bacterial therapy against inflammatory bowel disease (IBD). The coating strategy exhibits suitability for diverse probiotic strains and has negligible influence on bacterial viability. This study demonstrates that these armored probiotics have ultraresistance to extreme intraluminal conditions and stable mucoadhesive capacity. Notably, the HA-functionalized nanoarmor equips the probiotics with inflamed-site targetability through multiple interactions, thus enhancing their efficacy in IBD therapy. Moreover, timely "awakening" of ingested probiotics through the responsive transferrin-directed degradation of the nanoarmor at the site of inflammation is highly beneficial for bacterial therapy, which requires the bacterial cells to be fully functional. Given its easy preparation and favorable biocompatibility, the developed single-cell coating approach provides an effective strategy for the advanced delivery of probiotics for biomedical applications at the cellular level.
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Affiliation(s)
- Limeng Zhu
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325000, China
- Wenzhou Key Laboratory of Perioperative Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
- College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tiantian Yu
- Wenzhou Key Laboratory of Perioperative Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
| | - Wenchao Wang
- Department of Pain, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Tong Xu
- College of Life Science, University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wujun Geng
- Department of Pain, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Na Li
- Wenzhou Key Laboratory of Perioperative Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
| | - Xingjie Zan
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, 325000, China
- Wenzhou Key Laboratory of Perioperative Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
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Chen J, Hu Y, Wang P, Li J, Zheng Y, Lu C, Zhang B, Shen J, Cao Y. Strength-Ductility Mechanism of CoCrFeMnNi High-Entropy Alloys with Inverse Gradient-Grained Structures. Materials (Basel) 2024; 17:1695. [PMID: 38612208 PMCID: PMC11012396 DOI: 10.3390/ma17071695] [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: 02/08/2024] [Revised: 03/01/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024]
Abstract
The microstructures and mechanical properties of equiatomic CoCrFeMnNi high-entropy alloys (HEAs) treated with various processing parameters of laser surface heat treatment are studied in this paper. The typical inverse gradient-grained structure, which is composed of a hard central layer and a soft surface layer, can be obtained by laser surface heat treatment. A much narrower gradient layer leads to the highest yield strength by sacrificing ductility when the surface temperature of the laser-irradiated region remains at ~850 °C, whereas the fully recrystallized microstructure, which exists from the top surface layer to the ~1.05 mm depth layer, increases the ductility but decreases the yield strength as the maximum heating temperature rises to ~1050 °C. Significantly, the superior strength-ductility combination can be acquired by controlling the surface temperature of a laser-irradiated surface at ~1000 °C with a scanning speed of ~4 mm/s due to the effect of hetero-deformation-induced strengthening and hardening, as well as the enhanced interaction between dislocation and nanotwins by the hierarchical nanotwins. Therefore, retaining the partial recrystallized microstructure with a relatively high microhardness in the central layer, promoting the generation of hierarchical nanotwins, and increasing the volume proportion of gradient layer can effectively facilitate the inverse gradient-grained CoCrFeMnNi HEAs to exhibit a desirable strength-ductility synergy.
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Affiliation(s)
- Jie Chen
- School of Information Science and Technology, Northwest University, Xi’an 710127, China
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Yongqiang Hu
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Pengfei Wang
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Jingge Li
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Yu Zheng
- Zhejiang Wuma Reducer Co., Ltd., Wenzhou 325019, China
| | - Chengtong Lu
- Sichuan University-Pittsburgh Institute, Sichuan University, Chengdu 610207, China
| | - Bohong Zhang
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Jiahai Shen
- Haining Textile Machinery Co., Ltd., Haining 314400, China
| | - Yu Cao
- Zhejiang Provincial Key Laboratory of Laser Processing Robotics, College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325035, China
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
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Zan X, Yang D, Xiao Y, Zhu Y, Chen H, Ni S, Zheng S, Zhu L, Shen J, Zhang X. Facile General Injectable Gelatin/Metal/Tea Polyphenol Double Nanonetworks Remodel Wound Microenvironment and Accelerate Healing. Adv Sci (Weinh) 2024; 11:e2305405. [PMID: 38124471 PMCID: PMC10916639 DOI: 10.1002/advs.202305405] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/31/2023] [Indexed: 12/23/2023]
Abstract
Treating the most widespread complication of diabetes: diabetic wounds poses a significant clinical obstacle due to the intricate nature of wound healing in individuals with diabetes. Here a novel approach is proposed using easily applicable injectable gelatin/metal/tea polyphenol double nanonetworks, which effectively remodel the wound microenvironment and accelerates the healing process. The gelatin(Gel) crosslink with metal ions (Zr4+ ) through the amino acids, imparting advantageous mechanical properties like self-healing, injectability, and adhesion. The nanonetwork's biological functions are further enhanced by incorporating the tea polyphenol metal nanonetwork through in situ doping of the epigallocatechin gallate (EGCG) with great antibacterial, self-healing, antioxidant, and anticancer capabilities. The in vitro and in vivo tests show that this double nanonetworks hydrogel exhibits faster cell migration and favorable anti-inflammatory and antioxidant properties and can greatly reshape the microenvironment of diabetic wounds and accelerate the wound healing rate. In addition, this hydrogel is completely degraded after subcutaneous injection for 7 days, with nondetectable cytotoxicity in H&E staining of major mice organs and the serum level of liver function indicators. Considering the above-mentioned merits of this hydrogel, it is believed that the injectable gelatin/metal/tea polyphenol double nanonetworks have broad biomedical potential, especially in diabetic wound repair and tissue engineering.
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Affiliation(s)
- Xingjie Zan
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Dong Yang
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Yi Xiao
- School of Engineering and Applied SciencesHarvard UniversityCambridgeMA02138USA
| | - Yaxin Zhu
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Hua Chen
- Department of Thoracic SurgeryThe First Affiliated Hospital of Wenzhou Medical UniversityWenzhou325003China
| | - Shulan Ni
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Shengwu Zheng
- Wenzhou Celecare Medical Instruments Co., LtdWenzhou325000China
| | - Limeng Zhu
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Jianliang Shen
- National Engineering Research Center of Ophthalmology and OptometryEye HospitalWenzhou Medical UniversityWenzhou325027China
| | - Xingcai Zhang
- School of Engineering and Applied SciencesHarvard UniversityCambridgeMA02138USA
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Song L, Li C, Yu J, Yang Y, Tian X, Choo SW. The anti-cancer effect and mechanism of animal scale-derived extract on malignant melanoma cells. Sci Rep 2023; 13:12548. [PMID: 37532809 PMCID: PMC10397295 DOI: 10.1038/s41598-023-39742-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023] Open
Abstract
Melanoma is a type of cancer with abnormal proliferation of melanocytes and is one of the most diagnosed cancer types. In traditional Chinese medicine, pangolin scales have been used to treat various diseases, including human cancers. However, its efficacy has not been scientifically proven. Here we studied the anticancer effect and mechanism of pangolin scale extract (PSE) on melanoma cell lines using scientific approaches. Our cell viability assay shows that PSE exhibits up to approximately 50-80% inhibition on SK-MEL-103 and A375 melanoma cell lines. Mechanically, PSE inhibits melanoma cell proliferation, migration, and causes changes in cell morphology. The apoptosis assay showed a significant chromosomal condensation inside the PSE-treated melanoma cells. The sequencing and analysis of A375 melanoma cell transcriptomes revealed 3077 differentially expressed genes in the 6 h treatment group and 8027 differentially expressed genes in the 72 h treatment group. Transcriptome analysis suggests that PSE may cause cell cycle arrest in melanoma cells and promote apoptosis mainly by up-regulating the p53 signaling pathway and down-regulating the PI3K-Akt signaling pathway. In this study, the anticancer effect of PSE was demonstrated by molecular biological means. PSE shows a significant inhibition effect on melanoma cell proliferation and cell migration in vitro, causes cell cycle arrest and promotes apoptosis through p53 and PI3K-AKT pathways. This study provides better insights into the anti-cancer efficacy and underlying mechanism of PSE and a theoretical basis for mining anticancer compounds or the development of new treatments for melanoma in the future. It is worth noting that this study does not advocate the use of the pangolin scale for disease treatment, but only to confirm its usefulness from a scientific research perspective and to encourage subsequent research around the development of active compounds to replace pangolin scales to achieve the conservation of this endangered species.
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Affiliation(s)
- Lanni Song
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, College of Science and Technology, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
| | - Chen Li
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, College of Science and Technology, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
| | - Jia Yu
- Department of Biology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, 325060, Zhejiang Province, China
| | - Yixin Yang
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, College of Science and Technology, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China
- Department of Biology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, 325060, Zhejiang Province, China
| | - Xuechen Tian
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, College of Science and Technology, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China.
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China.
| | - Siew Woh Choo
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, College of Science and Technology, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China.
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang Province, China.
- Department of Biology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, 325060, Zhejiang Province, China.
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Zhou S, Yang R, Xie X, Wang L, Zheng S, Li N, Tang S, Zan X. pH-Responsive Hexa-Histidine Metal Assembly (HmA) with Enhanced Biocatalytic Cascades as the Vehicle for Glucose-Mediated Long-Acting Insulin Delivery. Adv Sci (Weinh) 2023; 10:e2301771. [PMID: 37269054 PMCID: PMC10427356 DOI: 10.1002/advs.202301771] [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] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/26/2023] [Indexed: 06/04/2023]
Abstract
Diabetes has been listed as one of the three major diseases that endanger human health. Accurately injecting insulin (Ins) depending on the level of blood glucose (LBG) is the standard treatment, especially controlling LBG in the long-term by a single injection. Herein, the pH-responsive hexa-histidine metal assembly (HmA) encapsulated with enzymes (GOx and CAT) and Ins (HmA@GCI) is engineered as the vehicle for glucose-mediated insulin delivery. HmA not only shows high proteins loading efficiency, but also well retained proteins activity and protect proteins from protease damage. Within HmA, the biocatalytic activities of enzymes and the efficiency of the cascade reaction between GOx and CAT are enhanced, leading to a super response to the change of LBG with insulin release and efficient clearance of harmful byproducts of GOx (H2 O2 ). In the treatment of diabetic mice, HmA@GCI reduces LBG to normal in half an hour and maintains for more than 5 days by a single subcutaneous injection, and nearly 24 days with four consecutive injections. During the test period, no symptoms of hypoglycemia and toxicity to tissues and organs are observed. These results indicate that HmA@GCI is a safe and long-acting hypoglycemic agent with prospective clinical application.
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Affiliation(s)
- Sijie Zhou
- School of Ophthalmology and OptometryEye HospitalSchool of Biomedical EngineeringWenzhou Medical UniversityWenzhou325035China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Ruhui Yang
- School of Ophthalmology and OptometryEye HospitalSchool of Biomedical EngineeringWenzhou Medical UniversityWenzhou325035China
| | - Xiaoling Xie
- School of Ophthalmology and OptometryEye HospitalSchool of Biomedical EngineeringWenzhou Medical UniversityWenzhou325035China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Liwen Wang
- Department of OphthalmologyHuzhou Central HospitalAffiliated Central hospital Huzhou UniversityHuzhou313000China
| | - Shengwu Zheng
- Wenzhou Celecare Medical Instruments Co., LtdWenzhou325000China
| | - Na Li
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Sicheng Tang
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
| | - Xingjie Zan
- School of Ophthalmology and OptometryEye HospitalSchool of Biomedical EngineeringWenzhou Medical UniversityWenzhou325035China
- Wenzhou InstituteWenzhou Key Laboratory of Perioperative MedicineUniversity of Chinese Academy of SciencesWenzhou325001China
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Yang Q, Xu W, Yang Y, Liu X, Su Q, Zhang Y, Wang J, Luo X, Zhou M, Luo W, Ge H. Mechanistic study of the effect of potassium ferrate and straw fiber on the enhancement of strength in cement-based solidified municipal sludge. Sci Rep 2023; 13:7660. [PMID: 37169857 PMCID: PMC10175490 DOI: 10.1038/s41598-023-34869-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/09/2023] [Indexed: 05/13/2023] Open
Abstract
The high content of organic matter in sludge is the primary reason for the poor solidifying effect and excessive dosage of the cement base. In this study, potassium ferrate and straw fiber are utilized to synergistically enhance the solidifying effect of the cement and elaborate the strength mechanisms. Among them, potassium ferrate was selected to oxidize and crack the structure of organic matter in sludge and consume part of organic matter; straw fiber was used as an adsorption material to absorb some of the organic material and reduce its interference with the cement hydration reaction; the skeleton function of straw fiber in solidified sludge was used to improve the final solidified sludge strength. It is shown that the presence of these two additives significantly improved the cement solidification strength and reduced the moisture content of the solidified body. Moreover, the moisture content and strength followed an obvious linear relationship (adjusted R2 = 0.92), with the strength increasing as the moisture content decreased. After pretreatment with potassium ferrate, the free water content in the dewatered sludge increased by 4.5%, which was conducive to the adequate hydration reaction with cement. The analysis using X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS), and mercury intrusion porosimetry (MIP) revealed potassium ferrate synergizes with straw fibers to promote the production of hemihydrate gypsum and gismondine. However, hemihydrate gypsum, calcium carbonate, and gismondine resulted in structural swelling, which was confirmed by the microscopic morphology and pore structure analysis. However, the adverse effects due to swelling were offset by the increase in strength brought by the above crystalline substances.
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Affiliation(s)
- Qiyong Yang
- Jiangxi Key Laboratory of Industrial Ecological Simulation and Environmental Health in Yangtze River Basin, Jiujiang University, Jiujiang, 332005, Jiangxi, China.
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China.
| | - Weixin Xu
- Jiangxi Key Laboratory of Industrial Ecological Simulation and Environmental Health in Yangtze River Basin, Jiujiang University, Jiujiang, 332005, Jiangxi, China
- School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China
| | - Yahong Yang
- School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China
| | - Xinxia Liu
- Jiujiang Three Gorges, Water Co. LTD, Jiujiang, 332005, Jiangxi, China
| | - Qizheng Su
- Jiujiang Three Gorges, Water Co. LTD, Jiujiang, 332005, Jiangxi, China
| | - Yangfan Zhang
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Ji Wang
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Xiang Luo
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Mengjing Zhou
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Weiping Luo
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Haoran Ge
- College of Resources & Environment, Jiujiang University, Jiujiang, 332005, Jiangxi, China
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Shao ZX, He W, He SQ, Lin SL, Huang ZY, Tang HC, Ni WF, Wang XY, Wu AM. A 3D navigation template for guiding a unilateral lumbar pedicle screw with contralateral translaminar facet screw fixation: a study protocol for multicentre randomised controlled trials. BMJ Open 2017; 7:e016328. [PMID: 28733301 PMCID: PMC5642762 DOI: 10.1136/bmjopen-2017-016328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
INTRODUCTION The incidence of lumbar disc degeneration disease has increased in recent years. Lumbar interbody fusion using two unilateral pedicle screws and a translaminar facet screw fixation has advantages of minimal invasiveness and lower costs compared with the traditional methods. Moreover, a method guided by a three-dimensional (3D) navigation template may help us improve the surgical accuracy and the success rate. This is the first randomised study using a 3D navigation template to guide a unilateral lumbar pedicle screw with contralateral translaminar facet screw fixation. METHODS AND ANALYSIS Patients who meet the criteria of the surgery will be randomly divided into experimental groups and control groups by a computer-generated randomisation schedule. We will preoperatively design an individual 3D navigation template using CATIA software and MeditoolCreate. The following primary outcomes will be collected: screw angles compared with the optimal screw trajectories in 3D digital images, length of the wound incision, operative time, intraoperative blood loss and complications. The following secondary outcomes will be collected: visual analogue scale (VAS) for back pain, VAS for leg pain and the Oswestry Disability Index. These parameters will be evaluated on day 1 and then 3, 6, 12 and 24 months postoperatively. ETHICS AND DISSEMINATION The study has been reviewed and approved by the institutional ethics review board of the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University. The results will be presented at scientific communities and peer-reviewed journals. TRIAL REGISTRATION NUMBER ChiCTR-IDR-17010466.
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Affiliation(s)
- Zhen-Xuan Shao
- Department of Spine Surgery, Orthopaedic Hospital, The Second Affiliated Hospital and Yuying Children’s Hospital of the Wenzhou Medical University, The Second Medical School of the Wenzhou Medical University, Zhejiang Spine Center, Wenzhou, China
| | - Wei He
- Department of Orthopaedics, People’s Hospital of Shaoxing, Zhejiang University Shaoxing Hospital, Shaoxing, China
| | - Shao-Qi He
- Department of Orthopaedics, People’s Hospital of Ruian, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, China
| | - Sheng-Lei Lin
- Department of Orthopaedics, Wenzhou Center Hospital, Dingli Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhe-Yu Huang
- Department of Orthopaedics, Ningbo No. 6 Hospital, Ningbo, Zhejiang, China
| | - Hong-Chao Tang
- Department of Orthopaedics, Jiaxing Hospital of Zhejiang General Corps of Armed Police Forces, Jiaxing, China
| | - Wen-Fei Ni
- Department of Spine Surgery, Orthopaedic Hospital, The Second Affiliated Hospital and Yuying Children’s Hospital of the Wenzhou Medical University, The Second Medical School of the Wenzhou Medical University, Zhejiang Spine Center, Wenzhou, China
| | - Xiang-Yang Wang
- Department of Spine Surgery, Orthopaedic Hospital, The Second Affiliated Hospital and Yuying Children’s Hospital of the Wenzhou Medical University, The Second Medical School of the Wenzhou Medical University, Zhejiang Spine Center, Wenzhou, China
| | - Ai-Min Wu
- Department of Spine Surgery, Orthopaedic Hospital, The Second Affiliated Hospital and Yuying Children’s Hospital of the Wenzhou Medical University, The Second Medical School of the Wenzhou Medical University, Zhejiang Spine Center, Wenzhou, China
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