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Ma F, Sui S, Yang Z, Ye T, Yang L, Han P, Gan H, Wu Z, Gu R, Zhu X, Li F, Meng Z, Jiang Z, Dou G. Evaluation of Novel Tranexamic Acid/Montmorillonite Intercalation Composite, as a New Type of Hemostatic Material. BIOMED RESEARCH INTERNATIONAL 2022; 2022:3963681. [PMID: 35265711 PMCID: PMC8901336 DOI: 10.1155/2022/3963681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 01/27/2022] [Indexed: 11/17/2022]
Abstract
Radiation enteritis-clinically manifested as diarrhea, intestinal bleeding, and so on-is frequently caused when the body is exposed to radiation or radiotherapy because the intestine is radiation-sensitive as an abdominal organ. Therefore, strategies to modulate intestinal hemostasis had inspired an important research trend in the process of preventing and treating radiation enteritis. Based on the structural characteristics of montmorillonite (MMT) and the hemostatic drug tranexamic acid (TXA) which was used clinically to treat enteritis, the tranexamic acid-montmorillonite composite material (TXA-MMT) was prepared through intercalation composite technology. According to the analysis of FTIR, XRD, TG-DTG, SEM, and XRF, the prepared TXA-MMT was verified that tranexamic acid could intercalate into layers of montmorillonite. To evaluate the biocompatibility, two experiments were conducted by in vitro hemolysis and in vitro cytotoxicity experiments and results showed that TXA-MMT exhibited good visible biocompatibility. Activated partial thromboplastin time, prothrombin time, and in vitro clotting time were adopted to determine the hemostatic effect of TXA-MMT. Compared with other groups, TXA-MMT revealed a significant decrease in clotting time variations, APTT, and PT. In addition, to investigate the preventive effect of TXA-MMT by the intervention of radiation enteritis mice, inflammatory factors IL-1β, IL-6, and TNF-α and the content of endotoxin in the serum of mice were detected. It demonstrated that TXA-MMT reduced the levels of these factors. Besides, the expression and the pathological changes of the small intestine tissue of mice were relieved. Our findings suggests that TXA-MMT as a promising intercalation composite has a great potential for application in the field of intestinal hemostasis.
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Affiliation(s)
- Fei Ma
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Shujing Sui
- Department of Gastroenterology, Taian City Central Hospital, Taian 271000, China
| | - Zhiyuan Yang
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Tong Ye
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Lei Yang
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Peng Han
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Hui Gan
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Zhuona Wu
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Ruolan Gu
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiaoxia Zhu
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Fei Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100089, China
- Clinical Laboratory Center, Taian City Central Hospital, Taian 271000, China
| | - Zhiyun Meng
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Zhiping Jiang
- Pharmacy Intravenous Admixture Services, Taian City Central Hospital, Taian 271000, China
| | - Guifang Dou
- State Key Laboratory of Drug Metabolism and Pharmacokinetics, Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China
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Ritto FP, da Silva EM, Borges ALS, Borges MAP, Sampaio-Filho HR. Fabrication and characterization of low-shrinkage dental composites containing montmorillonite nanoclay. Odontology 2021; 110:35-43. [PMID: 34156565 DOI: 10.1007/s10266-021-00629-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/14/2021] [Indexed: 11/25/2022]
Abstract
Dental composites are aesthetic materials widely used in Dentistry for replacing hard dental tissues lost due to caries or traumas. The aim of this study was to fabricate low-shrinkage dental composite charged with nanoclay fillers (montmorillonite Cloisite®-MMT) and evaluate their cytotoxicity and physicomechanical properties. Four dental composites were produced from the same organic matrix: Bis-GMA/TEGDMA (30 wt.%). The filler system was constituted of BaSi, SiO2, and MMT in the following concentrations (wt.%): 93.8/6.2/0, 89.1/5.9/5, 86.7/5.8/7.5, and 84.4/5.6/10 (E0: 0; E5: 5%; E7.5: 7.5%; E10: 10% of MMT nanoclays). The following properties were tested: in vitro cytotoxicity, flexural strength, elastic modulus, volumetric shrinkage, water sorption, water solubility, and hygroscopic expansion. Scanning electron microscopy was used to characterize composites' topography. Data were analyzed by one-way ANOVA and Tukey's HSD post hoc test (p < 0.05). MMT nanoclays did not affect the cytotoxicity. E5 and E7.5 groups showed a significant decrease in polymerization shrinkage while maintained the overall physicomechanical properties. The inclusion of 5 and 7.5 wt.% of MMT nanoclays allowed the fabrication of dental composites with low cytotoxicity and low polymerization shrinkage, without jeopardizing the overall behaviour of their physicomechanical properties (flexural strength, elastic modulus, water sorption, water solubility, and hygroscopic expansion). These aspects suggest that the usage of MMT nanoclays could be an effective strategy to formulate new dental composites with clinical applicability.
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Affiliation(s)
- Fernanda Pitta Ritto
- Department of Operative Dentistry, College of Dentistry, Oklahoma University, Oklahoma, USA
| | - Eduardo Moreira da Silva
- Analytical Laboratory of Restorative Biomaterials-LABiom-R, Faculdade de Odontologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Alexandre Luiz Souto Borges
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University-UNESP, São Jose Dos Campos, SP, Brazil
| | - Márcio Antônio Paraizo Borges
- Department of Operative Dentistry, IOPUC, Rua Marquês de São Vicente, 389-Gávea, Rio de Janeiro, RJ, 22451-047, Brazil.
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Wang Y, Zhu M, Zhu XX. Functional fillers for dental resin composites. Acta Biomater 2021; 122:50-65. [PMID: 33290913 DOI: 10.1016/j.actbio.2020.12.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Dental resin composites (DRCs) are popular materials to repair caries. Although various types of DRCs with different characteristics have been developed, restoration failures still exist. Bulk fracture and secondary caries have been considered as main causes for the failure of composites restoration. To address these problems, various fillers with specific functions have been introduced and studied. Some fillers with specific morphologies such as whisker, fiber, and nanotube, have been used to increase the mechanical properties of DRCs, and other fillers releasing ions such as Ag+, Ca2+, and F-, have been used to inhibit the secondary caries. These functional fillers are helpful to improve the performances and lifespan of DRCs. In this article, we firstly introduce the composition and development of DRCs, then review and discuss the functional fillers classified according to their roles in the DRCs, finally give a summary on the current research and predict the trend of future development.
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Affiliation(s)
- Yazi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China; Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, Québec, H3C 3J7, Canada
| | - Meifang Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - X X Zhu
- Département de Chimie, Université de Montréal, C.P. 6128, Succursale Centre-ville, Montréal, Québec, H3C 3J7, Canada.
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