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Abad-Coronel C, Calle C, Abril G, Paltán CA, Fajardo JI. Fracture Resistance Analysis of CAD/CAM Interim Fixed Prosthodontic Materials: PMMA, Graphene, Acetal Resin and Polysulfone. Polymers (Basel) 2023; 15:polym15071761. [PMID: 37050375 PMCID: PMC10097223 DOI: 10.3390/polym15071761] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023] Open
Abstract
The aim of this study was to evaluate and compare the fracture resistance of temporary restorations made of polymethylmethacrylate (PMMA), graphene-modified PMMA (GRA), acetal resin (AR) and polysulfone (PS) obtained by a subtractive technique (milling) using a computer-aided design and manufacturing (CAD/CAM) system of a three-unit fixed dental prosthesis (FDP). Methods: Four groups of ten samples were fabricated for each material. Each specimen was characterized by a compression test on a universal testing machine, all specimens were loaded to fracture and the value in Newtons (N) was recorded by software connected to the testing machine. The fracture mode was evaluated on all samples using a stereomicroscope. Results: There were statistically significant differences (p value < 0.005) between PMMA and the other three materials (PMMA: 1302.71 N; GRA: 1990.02 N; RA: 1796.20 N; PS: 2234.97). PMMA presented a significantly lower value than the other materials, and PS showed the highest value. GRA and RA presented a similar range of values but they were still higher than those of PMMA. Conclusions: GRA, RA and PS are presented as valid options within the range of interim milled restorative materials and as alternatives to PMMA.
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Affiliation(s)
- Cristian Abad-Coronel
- CAD/CAM Materials and Digital Dentistry Research Group, Faculty of Dentistry, Universidad de Cuenca, Cuenca 010107, Ecuador
| | - Carolina Calle
- Faculty of Dentistry, Universidad de Cuenca, Cuenca 010101, Ecuador
| | - Gabriela Abril
- Faculty of Dentistry, Universidad de Cuenca, Cuenca 010101, Ecuador
| | - César A. Paltán
- New Materials and Transformation Processes Research Group GiMaT, Universidad Politécnica Salesiana, Cuenca 170517, Ecuador
| | - Jorge I. Fajardo
- Mechanical Enginnering Faculty, Universidad Politécnica Salesiana, Cuenca 170517, Ecuador
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Characterization of the cylindrical electrospun nanofibrous polysulfone membrane for hemodialysis with modelling approach. Med Biol Eng Comput 2021; 59:1629-1641. [PMID: 34273038 DOI: 10.1007/s11517-021-02404-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 06/30/2021] [Indexed: 12/15/2022]
Abstract
Electrospun nanofibrous membrane (ENM) is a membrane fabricated using electrospinning technique which has considerable characteristics such as high porosity, nanometer pore size, and simple process. Although ENMs are being evaluated in various medical applications, the effectiveness for hemodialysis (HD) has not been evaluated carefully. Thus, in this study, the cylindrical electrospun nanofibrous polysulfone (CENP) membrane was fabricated and its performance in the dialysis adequacy in HD patients was evaluated.The CENP membrane was fabricated in a tabular shape. The physical characteristics of the membrane are examined using scanning electron microscope (SEM) images and the permporometry technique. Then, its efficiency in urea and creatinine removal from the blood serum of 21 HD patients was evaluated at a low blood flow rate (BFR) of 200 ml min-1 and dialysate fluid rate (DFR) of 300 ml min-1. Afterwards, the results were modeled and optimized using artificial neural network (ANN) and genetic algorithm (GA), respectively. Finally, sensitive analysis was performed via Spearman's rank correlation coefficient. The highest dialysis adequacy was observed in membranes with an inner diameter of 3 mm. The CENP membrane belongs to the super high-flux membrane and it could be replaced with existing commercial hollow fiber membranes.
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Haghdoost F, Bahrami SH, Barzin J, Ghaee A. Preparation and characterization of electrospun polyethersulfone/polyvinylpyrrolidone-zeolite core–shell composite nanofibers for creatinine adsorption. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117881] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Preparation and modification of an embossed nanofibrous materials for robust filtration performance of PM0.2 removal. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Chen H, Bian F, Sun L, Zhang D, Shang L, Zhao Y. Hierarchically Molecular Imprinted Porous Particles for Biomimetic Kidney Cleaning. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2005394. [PMID: 33184956 DOI: 10.1002/adma.202005394] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/29/2020] [Indexed: 06/11/2023]
Abstract
Blood purification by adsorption of excessive biomolecules is vital for maintaining human health. Here, inspired by kidney self-purification, which removes a number of biomolecules with different sizes simultaneously, hierarchical molecular-imprinted inverse opal particles integrated with a herringbone microfluidic chip for efficient biomolecules cleaning are presented. The particle possesses combinative porous structure with both surface and interior imprints for the specific recognition of small molecules and biomacromolecules. Additionally, the presence of the herringbone mixer largely improve the adsorption efficiency due to enhanced mixing. Moreover, the inverse opal framework of the particles give rise to optical sensing ability for self-reporting of the adsorption states. These features, together with its reusability, biosafety, and biocompatibility, make the platform highly promising for clinical blood purification and artificial kidney construction.
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Affiliation(s)
- Hanxu Chen
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Feika Bian
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Lingyu Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Dagan Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Luoran Shang
- Zhongshan-Xuhui Hospital, the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
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Wang Z, Cui W. Two Sides of Electrospun Fiber in Promoting and Inhibiting Biomedical Processes. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Zhen Wang
- Shanghai Institute of Traumatology and Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Wenguo Cui
- Shanghai Institute of Traumatology and Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine 197 Ruijin 2nd Road Shanghai 200025 P. R. China
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Mobasheri M, Valipouri A, Hosseini Ravandi SA. Developing porous fibers by electrocentrifuge spinning system. J Appl Polym Sci 2019. [DOI: 10.1002/app.47513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mina Mobasheri
- Department of Textile EngineeringIsfahan University of Technology Isfahan 8415683111 Iran
| | - Afsaneh Valipouri
- Department of Textile EngineeringIsfahan University of Technology Isfahan 8415683111 Iran
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Arabkari V, Amirizadeh N, Nikougoftar M, Soleimani M. microRNA expression profiles in two- and three-dimensional culture conditions of human-umbilical-cord blood-derived CD34 + cells. J Cell Physiol 2019; 234:20072-20084. [PMID: 30953369 DOI: 10.1002/jcp.28606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 12/16/2022]
Abstract
Human umbilical cord blood (HUCB) is a suitable source of hematopoietic stem cells (HSCs) for therapeutic transplantation. Different approaches have been used to expand the number of HSCs to increase the rate of HSC transplantation success in patients, such as using different cocktails of cytokines, feeder cell layers, and biocompatible scaffolds. microRNAs (miRNAs) are small noncoding RNAs that regulate gene expression posttranscriptionally. They play crucial roles in hematopoiesis including stem cell proliferation, differentiation, stemness, and self-renewal properties. Here, we studied the UCB-derived CD34+ cell expansion and the miRNA signatures of CD34+ cells on two- and three-dimensional (2D and 3D) culture conditions. We successfully expanded the UCB-derived CD34+ cells in both liquid culture (2D) and on aminated polyethersulfone nanofiber scaffolds (3D). Next, we identified the miRNA signature of CD34+ cells and their target genes. We found 58 dysregulated miRNAs in 3D culture condition and 34 dysregulated miRNAs in 2D culture condition when compared to the freshly isolated CD34+ cells. Various types of target genes were also predicted in both conditions using two online databases.
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Affiliation(s)
- Vahid Arabkari
- Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Iran Blood Transfusion Organization, Tehran, Iran
| | - Naser Amirizadeh
- Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Iran Blood Transfusion Organization, Tehran, Iran
| | - Mahin Nikougoftar
- Blood Transfusion Research Center, High Institute for Education and Research in Transfusion Medicine, Iran Blood Transfusion Organization, Tehran, Iran
| | - Masoud Soleimani
- Department of Hematology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Yang N, Jia X, Wang D, Wei C, He Y, Chen L, Zhao Y. Silibinin as a natural antioxidant for modifying polysulfone membranes to suppress hemodialysis-induced oxidative stress. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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