Biomedical materials (Bristol, England)最新文献

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Recent advances of bone tissue engineering: carbohydrate and ceramic materials, fundamental properties and advanced biofabrication strategies ‒ a comprehensive review. 骨组织工程的最新进展:碳水化合物和陶瓷材料、基本特性和先进的生物制造策略--全面综述。
Biomedical materials (Bristol, England) Pub Date : 2024-08-14 DOI: 10.1088/1748-605X/ad6b8a
Muhammad Umar Aslam Khan, Muhammad Azhar Aslam, Mohd Faizal Bin Abdullah, Abdalla Abdal-Hay, Wendong Gao, Yin Xiao, Goran M Stojanović
{"title":"Recent advances of bone tissue engineering: carbohydrate and ceramic materials, fundamental properties and advanced biofabrication strategies ‒ a comprehensive review.","authors":"Muhammad Umar Aslam Khan, Muhammad Azhar Aslam, Mohd Faizal Bin Abdullah, Abdalla Abdal-Hay, Wendong Gao, Yin Xiao, Goran M Stojanović","doi":"10.1088/1748-605X/ad6b8a","DOIUrl":"10.1088/1748-605X/ad6b8a","url":null,"abstract":"<p><p>Bone is a dynamic tissue that can always regenerate itself through remodeling to maintain biofunctionality. This tissue performs several vital physiological functions. However, bone scaffolds are required for critical-size damages and fractures, and these can be addressed by bone tissue engineering. Bone tissue engineering (BTE) has the potential to develop scaffolds for repairing critical-size damaged bone. BTE is a multidisciplinary engineered scaffold with the desired properties for repairing damaged bone tissue. Herein, we have provided an overview of the common carbohydrate polymers, fundamental structural, physicochemical, and biological properties, and fabrication techniques for bone tissue engineering. We also discussed advanced biofabrication strategies and provided the limitations and prospects by highlighting significant issues in bone tissue engineering. There are several review articles available on bone tissue engineering. However, we have provided a state-of-the-art review article that discussed recent progress and trends within the last 3-5 years by emphasizing challenges and future perspectives.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study onin vivoandin vitrodegradation of polydioxanone weaving tracheal stents. 聚二氧酮编织气管支架的体内和体外降解研究。
Biomedical materials (Bristol, England) Pub Date : 2024-08-14 DOI: 10.1088/1748-605X/ad6ac6
Haihua Huang, Yuchen Wang, Jun Zeng, Yanxue Ma, Zelin Cui, Yongxin Zhou, Zheng Ruan
{"title":"Study on<i>in vivo</i>and<i>in vitro</i>degradation of polydioxanone weaving tracheal stents.","authors":"Haihua Huang, Yuchen Wang, Jun Zeng, Yanxue Ma, Zelin Cui, Yongxin Zhou, Zheng Ruan","doi":"10.1088/1748-605X/ad6ac6","DOIUrl":"10.1088/1748-605X/ad6ac6","url":null,"abstract":"<p><p>The appropriate degradation characteristics of polydioxanone (PDO) are necessary for the safety and effectiveness of stents. This study aimed to investigate the degradation of PDO weaving tracheal stents (PW stents)<i>in vitro</i>and<i>in vivo</i>. The degradation solution of<i>S. aureus</i>(SAU),<i>E. coli</i>(ECO),<i>P. aeruginosa</i>(PAE), and control (N) were prepared, and the PW stents were immersed for 12 weeks. Then, the radial support force, weight retention, pH, molecular structure, thermal performance, and morphology were determined. Furthermore, the PW stents were implanted into the abdominal cavity of rabbits, and omentum was embedded. At feeding for 16 weeks, the mechanical properties, and morphology were measured. During the first 8 weeks, the radial support force in all groups was progressively decreased. At week 2, the decline rate of radial support force in the experimental groups was significantly faster compared to the N group, and the difference was narrowed thereafter. The infrared spectrum showed that during the whole degradation process, SAU, ECO and PAE solution did not lead to the formation of new functional groups in PW stents.<i>In vitro</i>scanning electron microscope observation showed that SAU and ECO were more likely to gather and multiply at the weaving points of the PW stents, forming colonies.<i>In vivo</i>experiments showed that the degradation in the concavity of weaving points of PW stents was more rapid and severe. The radial support loss rate reached more than 70% at week 4, and the radial support force was no longer measurable after week 8. In omentum, multinuclear giant cells and foreign giant cells were found to infiltrate. PW stents have good biocompatibility. The degradation rate of PW stents in the aseptic conditions<i>in vivo</i>was faster than in the bacteriological environment<i>in vitro</i>.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and antibacterial evaluation of silver-doped zirconia for enhanced dental restoration performance. 制备掺银氧化锆并对其进行抗菌评估,以提高牙齿修复性能。
Biomedical materials (Bristol, England) Pub Date : 2024-08-14 DOI: 10.1088/1748-605X/ad6ac3
Tadahiro Higashinakao, Hiroshi Kono, Mihiro Itotagawa, Yuki Sugiura, Yuta Otsuka, Masafumi Kikuchi
{"title":"Preparation and antibacterial evaluation of silver-doped zirconia for enhanced dental restoration performance.","authors":"Tadahiro Higashinakao, Hiroshi Kono, Mihiro Itotagawa, Yuki Sugiura, Yuta Otsuka, Masafumi Kikuchi","doi":"10.1088/1748-605X/ad6ac3","DOIUrl":"10.1088/1748-605X/ad6ac3","url":null,"abstract":"<p><p>Because of its superior strength, esthetic properties, and excellent biocompatibility, zirconia is preferred for dental prosthetic such as crowns and bridges. However, zirconia crowns and bridges are susceptible to secondary caries owing to margin leakage. Silver is a well-known antibacterial agent, making it a desirable additive to zirconia crowns and bridges for secondary caries prevention. This study focuses on imparting zirconia composite with antibacterial properties to enhance its protective capacity in dental restorations. We used the sol-gel method to dope Ag into zirconia. Silver-doped zirconia powders were prepared at Zr:Ag molar ratios of 100:0,100:0.1, 100:0.5, 100:1, 100:3, and 100:5 (respective samples denoted as Ag-0, Ag-0.1, Ag-0.5, Ag-1, Ag-3, and Ag-5) and were subjected to firing at various temperatures (400 °C-1000 °C). We performed x-ray diffraction to investigate the crystal phase of these powders and x-ray fluorescence and field emission scanning electron microscopy to analyze their elemental composition and surface morphology, respectively. Moreover, we performed spectrophotometry to determine the<i>L</i>*<i>a</i>*<i>b</i>* color values, conducted dissolution tests, and quantified the Ag content through inductively coupled plasma optical emission spectroscopy. In addition, we studied the antibacterial activity of the samples. Analyses of the samples fired at ⩽600 °C revealed a predominantly white to grayish-white coloration and a tetragonal crystal phase. Firing at ⩾700 °C resulted in gray or dark gray coloration and a monoclinic crystal phase. The Ag content decreased after firing at 900 °C or 1000 °C. Ag-0.5 and above exhibited antibacterial activity against both<i>Escherichia coli</i>and<i>Staphylococcus aureus</i>. Therefore, the minimum effective silver-doped zirconia sample was found to be Ag-0.5. This study allows the exploration of the antimicrobial potential of silver-doped zirconia materials in dental applications such as prosthdontical lining materials, promoting the development of innovative restorations with protective capacity against secondary caries.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comprehensive review of lessons learned from quantum dots in cancer therapy. 全面回顾量子点在癌症治疗方面的经验教训。
Biomedical materials (Bristol, England) Pub Date : 2024-08-13 DOI: 10.1088/1748-605X/ad68af
Javad Mohammadi, Ali Hheidari, Sohrab Sardari, Moein Nouri, Sina Ebrahimi, Abbas Rahdar, Esmail Pishbin
{"title":"A comprehensive review of lessons learned from quantum dots in cancer therapy.","authors":"Javad Mohammadi, Ali Hheidari, Sohrab Sardari, Moein Nouri, Sina Ebrahimi, Abbas Rahdar, Esmail Pishbin","doi":"10.1088/1748-605X/ad68af","DOIUrl":"10.1088/1748-605X/ad68af","url":null,"abstract":"<p><p>Quantum dots (QDs) are with exceptional physicochemical and biological properties, making them highly versatile for a wide range of applications in cancer therapy. One of the key features of QDs is their unique electronic structure, which gives them functional attributes. Notably, their photoluminescence can be strong and adjustable, allowing them to be effectively used in fluorescence based diagnosis such as biosensing and bioimaging. In addition, QDs demonstrate an impressive capacity for loading cargo, making them ideal for drug delivery applications. Moreover, their ability to absorb incident radiation positions QDs as promising candidates for cancer-killing techniques like photodynamic therapy. The objective of this comprehensive review is to present a current and comprehensive overview of the recent advancements in utilizing QDs as multifunctional and innovative biomaterials. This review focuses on elucidating the biological, electronic, and physicochemical properties of QDs, along with discussing the technical advancements in QD synthesis. Furthermore, it thoroughly explores the progress made in utilizing QDs for diagnosis based on biosensing, bioimaging, and therapy applications including drug delivery and necrosis, highlighting their significant potential in the field of cancer treatment. Furthermore, the review addresses the current limitations associated with QDs in cancer therapy and provides valuable insights into future directions, thereby facilitating further advancements in this field. By presenting a comprehensive and well-structured overview, this review serves as an authoritative and informative resource that can guide future research endeavors and foster continued progress in the field of QDs for cancer therapy.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141794101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of 3D PCL/PVP scaffolds using monosodium glutamate as porogen by solvent casting/particulate leaching method for oral and maxillofacial bone tissue engineering. 利用溶剂浇铸/微粒浸出法,以谷氨酸钠为致孔原制备用于口腔颌面骨组织工程的三维 PCL/PVP 支架。
Biomedical materials (Bristol, England) Pub Date : 2024-08-13 DOI: 10.1088/1748-605X/ad6ac5
Thanh Huy Thai, Thy Minh Nguyen, Minh-Dung Truong, Thi Thanh Tam Phan, Dinh Thanh Le, Hoan Ngoc Doan, Thi-Hiep Nguyen
{"title":"Fabrication of 3D PCL/PVP scaffolds using monosodium glutamate as porogen by solvent casting/particulate leaching method for oral and maxillofacial bone tissue engineering.","authors":"Thanh Huy Thai, Thy Minh Nguyen, Minh-Dung Truong, Thi Thanh Tam Phan, Dinh Thanh Le, Hoan Ngoc Doan, Thi-Hiep Nguyen","doi":"10.1088/1748-605X/ad6ac5","DOIUrl":"10.1088/1748-605X/ad6ac5","url":null,"abstract":"<p><p>The design of three-dimensional (3D) scaffolds should focus on creating highly porous, 3D structures with an interconnected pore network that supports cell growth. The scaffold's pore interconnectivity is directly linked to vascularization, cell seeding, guided cell migration, and transportation of nutrients and metabolic waste. In this study, different types of food flavors including monosodium glutamate, sugar, and sodium chloride were used as the porogens along with PCL/PVP blend polymer for solvent casting/particulate leaching method. The morphology, porosity, interconnectivity, chemical composition, water absorption, and mechanical properties of the fabricated scaffolds are carefully characterized. The scaffolds are biocompatible in both<i>in vitro</i>and<i>in vivo</i>experiments and do not trigger any inflammatory response while enhancing new bone formation and vascularization in rabbit calvaria critical-sized defects. The new bone merges and becomes denser along with the experiment timeline. The results indicate that the 3D PCL/PVP scaffolds, using monosodium glutamate as porogen, exhibited suitable biological performance and held promise for bone tissue engineering in oral and maxillofacial surgery.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing neurite growth and neural functions on polymeric nerve conduit with BMSC-derived ECM coating. 用 BMSC 衍生的 ECM 涂层增强聚合物神经导管上的神经元生长和神经功能。
Biomedical materials (Bristol, England) Pub Date : 2024-08-13 DOI: 10.1088/1748-605X/ad6ac0
Miaoben Wu, Haiyang Wang, Kailei Xu, Jin Mei, Zonghuan Wang
{"title":"Enhancing neurite growth and neural functions on polymeric nerve conduit with BMSC-derived ECM coating.","authors":"Miaoben Wu, Haiyang Wang, Kailei Xu, Jin Mei, Zonghuan Wang","doi":"10.1088/1748-605X/ad6ac0","DOIUrl":"10.1088/1748-605X/ad6ac0","url":null,"abstract":"<p><p>The therapy of large defects in peripheral nerve injury (PNI) suffers from several drawbacks, especially the lack of autologous nerve donors. Nerve conduits are considered as a solution for nerve injury treatment, but biocompatibility improvements is still required for conduits prepared with synthetic materials. Cell-derived extracellular matrix (ECM) has drawn attention due to its lower risk of immunogenic response and independence from donor availability. The goal of this study is to coat bone mesenchymal stem cell-derived ECMs on poly(lactic-co-glycolic) acid (PLGA) conduits to enhance their ability to support neural growth and neurite extensions. The ECM-coated conduits have better hydrophilic properties than the pure PLGA conduits. A marked increase on PC12 and RSC96 cells' viability, proliferation and dorsal root ganglion neurite extension was observed. Quantitative PCR analysis exhibited a significant increase in markers for cell proliferation (GAP43), neurite extension (NF-H, MAP2, and<i>β</i>III-tubulin) and neural function (TREK-1). These results show the potential of ECM-coated PLGA conduits in PNI therapy.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141879939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A grafting approach for nisin-chitosan bio-based antibacterial films: preparation and characterization. 尼生素-壳聚糖生物基抗菌薄膜的接枝法:制备和表征。
Biomedical materials (Bristol, England) Pub Date : 2024-08-09 DOI: 10.1088/1748-605X/ad6965
Ayse Gunyakti Mujtaba, Özge Toprak, Ayşe Karakeçili
{"title":"A grafting approach for nisin-chitosan bio-based antibacterial films: preparation and characterization.","authors":"Ayse Gunyakti Mujtaba, Özge Toprak, Ayşe Karakeçili","doi":"10.1088/1748-605X/ad6965","DOIUrl":"10.1088/1748-605X/ad6965","url":null,"abstract":"<p><p>Nisin is a bacteriocin produced by Gram-positive lactic acid bacterium,<i>Lactococcus lactis</i>and currently recognized in the Generally Recognızed as Safe (GRAS) category due to its non-toxicity. Herein, nisin has been grafted to chitosan structure to obtain natural bio-active films with enhanced antibacterial activity. Grafting was performed using ethyl ester lysine diisocyanate and dimer fatty acid-based diisocyanate (DDI); two different close to fully bio-based diisocyanates and Disuccinimidyl suberate; a homo-bifunctional molecule acting as a crosslinker between amino groups. The grafting process allowed the chemical immobilization of nisin to chitosan structure. Physicochemical characterization studies showed the successful grafting of nisin. The antibacterial activity against<i>Staphylococcus aureus</i>was evident for all nisin modified chitosan films and best pronounced when DDI was used as a crosslinker with a maximum zone of inhibition of ∼13 mm. All nisin grafted chitosan films were cytocompatible and the cell viability of L929 fibroblasts were >80% pointing out the non-toxic structure. Considering the results of the presented study, bio-based diisocyanates and homo-bifunctional crosslinkers are effective molecules in synthesis of nisin grafted chitosan structures and the new chitosan based antibacterial biopolymers obtained after nisin modification come forward as promising non-toxic and bioactive candidates to be applied in medical devices, implants, and various food coating products.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141857277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
(+)4-cholesten-3-one/sodium alginate/gelatin hydrogel for full-thickness wound repair and skin regeneration. (+)4-胆甾烯-3-酮/海藻酸钠/明胶水凝胶用于全厚伤口修复和皮肤再生。
Biomedical materials (Bristol, England) Pub Date : 2024-08-08 DOI: 10.1088/1748-605X/ad6966
Yu Yan, Aijia You, Xianxian Chen, Wenyi Huang, Xiaoting Lu, Cuijin Gu, Sen Ye, Jun Zhong, Haiting Huang, Yao Zhao, Yu Li, Chun Li
{"title":"(+)4-cholesten-3-one/sodium alginate/gelatin hydrogel for full-thickness wound repair and skin regeneration.","authors":"Yu Yan, Aijia You, Xianxian Chen, Wenyi Huang, Xiaoting Lu, Cuijin Gu, Sen Ye, Jun Zhong, Haiting Huang, Yao Zhao, Yu Li, Chun Li","doi":"10.1088/1748-605X/ad6966","DOIUrl":"https://doi.org/10.1088/1748-605X/ad6966","url":null,"abstract":"<p><p>(+)4-cholesten-3-one has been proved to have potential wound healing effect in the process of wound regeneration. This study aimed to evaluate the effect of (+)4-cholesten-3-one/sodium alginate/gelatin on skin injury and reveal its potential molecular mechanism. First, we prepared sodium alginate/gelatin hydrogel (SA/Gel hydrogel) with different ratios and tested their characteristics. Based on these results, different concentrations of (+)4-cholesten-3-one were added into SA/Gel hydrogel. A full-thickness skin injury model was successfully established to evaluate wound healing activity<i>in vivo</i>. HE staining and Masson staining were used to evaluate the thickness of granulation tissue and collagen deposition level. Immunohistochemical staining and immunofluorescence staining were applied to detect the level of revascularization and proliferation in each group of wounds. Western blot, quantitative-PCR and immunofluorescence staining were used to detect the expression of proteins related to Wnt/<i>β</i>-catenin signaling pathway in each group of wounds.<i>In vitro</i>results showed that the hydrogel not only created a 3D structure for cell adhesion and growth, but also exhibited good swelling ability, excellent degradability and favorable bio-compatibility. Most importantly,<i>in vivo</i>experiments further indicated that (+)4-cholesten-3-one/SA/Gel hydrogel effectively enhanced wound healing. The effectiveness is due to its superior abilities in accelerating healing process, granulation tissue regeneration, collagen deposition, promoting angiogenesis, tissue proliferation, as well as fibroblast activation and differentiation. The underlying mechanism was related to the Wnt/<i>β</i>-catenin signaling pathway. This study highlighted that (+)4-cholesten-3-one/SA/Gel hydrogel holds promise as a wound healing dressing in future clinical applications.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":"19 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The feasibility and safety of biomaterials for posterior scleral reinforcement in rabbits. 用于兔子后巩膜加固的生物材料的可行性和安全性。
Biomedical materials (Bristol, England) Pub Date : 2024-08-08 DOI: 10.1088/1748-605X/ad6826
Wen-Fei Zhang, Bin-Han Li, Zi-Bo Liu, Tai-Ran Peng, Rong-Ping Dai, Zhi-Kun Yang, Yue-Lin Wang, Zhuo Xiong, Chan Wu, Ting Zhang, An-Quan Xue, You-Xin Chen
{"title":"The feasibility and safety of biomaterials for posterior scleral reinforcement in rabbits.","authors":"Wen-Fei Zhang, Bin-Han Li, Zi-Bo Liu, Tai-Ran Peng, Rong-Ping Dai, Zhi-Kun Yang, Yue-Lin Wang, Zhuo Xiong, Chan Wu, Ting Zhang, An-Quan Xue, You-Xin Chen","doi":"10.1088/1748-605X/ad6826","DOIUrl":"10.1088/1748-605X/ad6826","url":null,"abstract":"<p><p>To explore the feasibility and safety of biomaterials for posterior scleral reinforcement (PSR) in rabbits. Decellularization and genipin crosslink were applied to the fresh bovine pericardium and porcine endocranium, and then mechanical properties, suture retention strength, and stability were tested. PSR operation was performed on 24 rabbit eyes using treated biological materials. Ophthalmic examination was performed regularly before and after PSR operation (1 week, 1 month, 3 months, 6 months). To evaluate the effectiveness, A ultrasound, diopter, and optical coherence tomography were conducted. General condition, fundus photograph, and pathological examination were recorded to evaluate the safety. Compared with genipin crosslinked bovine pericardium (Gen-BP) (21.29 ± 13.29 Mpa), genipin crosslinked porcine endocranium (Gen-PE) (34.85 ± 3.67 Mpa,<i>P</i>< 0.01) showed a closer elastic modulus to that of genipin crosslinked human sclera. There were no complications or toxic reactions directly related to the materials. Capillary hyperplasia, inflammatory cell infiltration, and collagen fiber deposition were observed, and the content of type I collagen fibers increased after PSR. Overall, the choroidal thickness of treated eyes was significantly thickened at different time points after PSR, which were 96.84 ± 21.08 μm, 96.72 ± 22.00 μm, 90.90 ± 16.57 μm, 97.28 ± 14.74 μm, respectively. The Gen-PE group showed changes that were almost consistent with the overall data. Gen-BP and Gen-PE are safe biological materials for PSR. The Gen-PE group demonstrated more significant advantages over the Gen-BP group in terms of material properties.</p>","PeriodicalId":72389,"journal":{"name":"Biomedical materials (Bristol, England)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe-doped 45S5 bioactive glass compositions impair the metabolic activity and proliferation of metastatic human breast cancer cellsin vitro. 掺铁的 45S5 生物活性玻璃成分会损害体外转移性人类乳腺癌细胞的代谢活性和增殖。
Biomedical materials (Bristol, England) Pub Date : 2024-08-08 DOI: 10.1088/1748-605X/ad651c
Nina Hildenbrand, Wilko Thiele, Elena Tripel, Tobias Renkawitz, Farzad Kermani, Ahmed El-Fiqi, Fabian Westhauser
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