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Tissue Engineering. Part B, Reviews最新文献

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Biomechanics of Negative-Pressure-Assisted Liposuction and Their Influence on Fat Regeneration. 负压辅助吸脂术的生物力学及其对脂肪再生的影响。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-11-26 DOI: 10.1089/ten.teb.2024.0186
Zijin Qin, Guo Chen, Na Wang, Jie Long, Minli Yang, Juan Wang, Botao Gao, Zhaoxiang Zhang, Ziang Zhang

Autologous fat grafting has been widely adopted in cosmetic and reconstructive procedures recently. With the emerging of negative-pressure-assisted liposuction system, the harvesting process of fat grafting is more standardized, controllable, and efficient. Each component in the system could influence the biomechanical environment of lipoaspirate. Several reviews have studied the impact of negative pressure on fat regeneration. As the initial part of the harvesting system, cannulas possess their unique mechanical parameters and their influence on lipoaspirate biomechanical characters, biological behaviors, and regeneration patterns remains unclear. Basic in vivo and in vitro studies have been performed to determine the possible mechanisms. Instant in vivo studies focus on adipocytes, stromal vascular fraction cells, fat particles, and growth factors, while in vivo grafting experiments analyze the graft retention rate and histology. Understanding the different regeneration patterns of lipoaspirate and the mechanisms behind may facilitate the choice of harvesting cannulas in clinical practice.

近来,自体脂肪移植在美容和整形手术中被广泛采用。随着负压辅助吸脂系统的出现,脂肪移植的采集过程更加标准化、可控化和高效化。系统中的每个组件都会影响吸脂的生物力学环境。一些综述研究了负压对脂肪再生的影响。插管作为采集系统的初始部分,具有其独特的机械参数,它们对吸脂管生物力学特征、生物行为和再生模式的影响仍不清楚。为了确定可能的机制,已经进行了基本的体内和体外研究。即时体内研究主要关注脂肪细胞、基质血管部分细胞、脂肪颗粒和生长因子,而体内移植实验则分析移植体的保留率和组织学。了解吸脂的不同再生模式及其背后的机制有助于在临床实践中选择采集套管。
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引用次数: 0
Artificial Neural Networks: A New Frontier in Dental Tissue Regeneration. 人工神经网络:牙组织再生的新前沿。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-11-18 DOI: 10.1089/ten.teb.2024.0216
Nurul Hafizah Mohd Nor, Nur Izzati Mansor, Nur Asmadayana Hasim

In the realm of dental tissue regeneration research, various constraints exist such as the potential variance in cell quality, potency arising from differences in donor tissue and tissue microenvironment, the difficulties associated with sustaining long-term and large-scale cell expansion while preserving stemness and therapeutic attributes, as well as the need for extensive investigation into the enduring safety and effectiveness in clinical settings. The adoption of artificial intelligence (AI) technologies has been suggested as a means to tackle these challenges. This is because, tissue regeneration research could be advanced through the use of diagnostic systems that incorporate mining methods such as neural networks (NN), fuzzy, predictive modeling, genetic algorithms, machine learning (ML), cluster analysis, and decision trees. This article seeks to offer foundational insights into a subset of AI referred to as artificial neural networks (ANNs) and assess their potential applications as essential decision-making support tools in the field of dentistry, with a particular focus on tissue engineering research. Although ANNs may initially appear complex and resource intensive, they have proven to be effective in laboratory and therapeutic settings. This expert system can be trained using clinical data alone, enabling their deployment in situations where rule-based decision-making is impractical. As ANNs progress further, it is likely to play a significant role in revolutionizing dental tissue regeneration research, providing promising results in streamlining dental procedures and improving patient outcomes in the clinical setting.

在牙科组织再生研究领域,存在着各种制约因素,如细胞质量的潜在差异、供体组织和组织微环境差异导致的效力差异、在保持干性和治疗属性的同时维持长期和大规模细胞扩增的相关困难,以及需要对临床环境中的持久安全性和有效性进行广泛调查。有人建议采用人工智能(AI)技术来应对这些挑战。这是因为,组织再生研究可以通过使用结合了神经网络(NN)、模糊、预测建模、遗传算法、机器学习(ML)、聚类分析和决策树等挖掘方法的诊断系统来推进。本文试图对人工智能的一个子集--人工神经网络(ANN)--提出基础性见解,并评估其作为牙科领域重要决策支持工具的潜在应用,尤其侧重于组织工程研究。虽然人工神经网络最初看起来可能比较复杂,需要大量资源,但事实证明,它们在实验室和治疗环境中非常有效。这种专家系统可以仅使用临床数据进行训练,从而在基于规则的决策不切实际的情况下部署。随着人工神经网络的进一步发展,它很可能在牙科组织再生研究的革命性变革中发挥重要作用,为简化牙科手术和改善临床环境中的患者预后提供可喜的成果。
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引用次数: 0
Efficacy of Fresh Versus Preserved Amniotic Membrane Grafts for Ocular Surface Reconstruction: Meta-analysis. 新鲜羊膜移植与保存羊膜移植用于眼表重建的疗效:META = 元分析。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-29 DOI: 10.1089/ten.teb.2024.0217
Yu Hu, Jinhai Yu, Yuting Fu, Xinyi Guan, Fen Xiong, Hongfei Liao, Qihua Xu, Anan Wang

Amniotic membrane transplantation is commonly employed in ophthalmology to mend corneal epithelial and stromal defects. Its effectiveness in restoring the ocular surface has been widely acknowledged in clinical practice. Nevertheless, there is ongoing debate regarding the comparative effectiveness of using fresh amniotic membranes versus preserved ones. The objective of this meta-analysis was to ascertain whether there is a disparity in the effectiveness of fresh versus preserved amniotic membrane in the restoration of the ocular surface in clinical practice. The study utilized the following keywords: "fresh amniotic membrane," "preserved amniotic membrane," "amniotic membrane transplantation," and "ocular surface reconstruction." The study conducted a comprehensive search for relevant studies published until April 18, 2024. Seven different databases, namely PubMed, Web of Science, Embase, Cochrane, China Knowledge, China Science and Technology Journal VIP database, and Wanfang database, were utilized. The search was performed using the keywords "fresh amniotic membrane," "preserved amniotic membrane," "amniotic membrane transplantation," and "ocular surface reconstruction." The process of literature review and data extraction was carried out separately by two researchers, and all statistical analyses were conducted using Review Manager 5.4.1. The final analysis comprised nine cohort studies, encompassing a total of 408 participants. The statistics included six outcome indicators: visual acuity (relative risk [RR] = 1.07, 95% confidence interval [CI] = 0.93-1.24, I2 = 0); amniotic membrane viability (RR = 1.00, 95% CI = 0.93-1.08, I2 = 0); ocular congestion resolution (RR = 1.11, 95% CI = 0.97-1.26, I2 = 0); fluorescent staining of amniotic membranes on the second day after the operation (RR = 1.31, 95% CI = 0.80-2.14, I2 = 11); postoperative recurrence rate (RR = 1.01, 95% CI = 0.50-2.03, I2 = 0); and premature lysis of amniotic membrane implants (RR = 0.96, 95% CI = 0.49-1.88, I2 = 0). The findings indicated that there was no statistically significant disparity between fresh and preserved amniotic membranes across any of the measured variables. There is no substantial disparity in the effectiveness of fresh and preserved amniotic membrane transplants in restoring the ocular surface, and both yield favorable and consistent outcomes.

羊膜移植是眼科常用的角膜上皮和基质缺损修补方法。在临床实践中,羊膜移植在修复眼表方面的有效性已得到广泛认可。然而,关于使用新鲜羊膜与保存羊膜的效果比较,一直存在争议。本荟萃分析旨在确定在临床实践中,新鲜羊膜与保存羊膜在恢复眼表方面的效果是否存在差异。研究使用了以下关键词:"新鲜羊膜"、"保存羊膜"、"羊膜移植 "和 "眼表重建"。研究对 2024 年 4 月 18 日之前发表的相关研究进行了全面检索。研究利用了七个不同的数据库,即PubMed、Web of Science、Embase、Cochrane、中国知网、中国科技期刊VIP数据库和万方数据库。检索关键词为 "新鲜羊膜"、"保存羊膜"、"羊膜移植 "和 "眼表重建"。文献综述和数据提取过程由两名研究人员分别进行,所有统计分析均使用 Review Manager 5.4.1 进行。最终分析包括九项队列研究,共有 408 名参与者。统计结果包括六项结果指标:视力(相对风险 [RR] = 1.07,95% 置信区间 [CI] = 0.93-1.24,I2 = 0);羊膜存活率(RR = 1.00,95% CI = 0.93-1.08,I2 = 0);眼充血缓解率(RR = 1.11,95% CI = 0.97-1.26,I2 = 0);眼充血缓解率(RR = 1.00,95% CI = 0.93-1.08,I2 = 0)。26,I2 = 0);术后第二天羊膜荧光染色(RR = 1.31,95% CI = 0.80-2.14,I2 = 11);术后复发率(RR = 1.01,95% CI = 0.50-2.03,I2 = 0);羊膜植入物过早溶解(RR = 0.96,95% CI = 0.49-1.88,I2 = 0)。研究结果表明,在所有测量变量中,新鲜羊膜和保存羊膜之间没有统计学意义上的显著差异。在恢复眼表方面,新鲜羊膜移植和保存羊膜移植的效果没有实质性差异,两者都能产生良好且一致的结果。
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引用次数: 0
Tissue Engineering Nasal Cartilage Grafts with Three-Dimensional Printing: A Comprehensive Review. 三维打印鼻软骨移植组织工程:全面回顾。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-22 DOI: 10.1089/ten.TEB.2024.0187
Alexander C Perry, Adetola B Adesida

Nasal cartilage serves a crucial structural function for the nose, where rebuilding the cartilaginous framework is an essential aspect of nasal reconstruction. Conventional methods of nasal reconstruction rely on autologous cartilage harvested from patients, which contributes to donor site pain and the potential for site-specific complications. Some patients are not ideal candidates for this procedure due to a lack of adequate substitute cartilage due to age-related calcification, differences in tissue quality, or due to prior surgeries. Tissue engineering, combined with three-dimensional printing technologies, has emerged as a promising method of generating biomimetic tissues to circumvent these issues to restore normal function and aesthetics. We conducted a comprehensive literature review to examine the applications of three-dimensional printing in conjunction with tissue engineering for the generation of nasal cartilage grafts. This review aims to compare various approaches and discuss critical considerations in the design of these grafts.

鼻软骨对鼻子的结构起着至关重要的作用,重建软骨框架是鼻重建的一个重要方面。传统的鼻部重建方法依赖于从患者身上获取自体软骨,这会导致供体部位疼痛,并可能出现特定部位的并发症。有些患者由于年龄钙化、组织质量差异或之前接受过手术而缺乏足够的替代软骨,因此并不是这种手术的理想人选。结合三维打印技术,组织工程学已成为一种很有前途的方法,它可以生成生物仿生组织,从而避免这些问题,恢复正常功能和美观。我们进行了一次全面的文献综述,研究了三维打印与组织工程结合在鼻软骨移植中的应用。本综述旨在比较各种方法,并讨论这些移植物设计中的关键考虑因素。
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引用次数: 0
Delivery Strategies of Growth Factors in Cartilage Tissue Engineering. 软骨组织工程中生长因子的输送策略。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-18 DOI: 10.1089/ten.TEB.2024.0158
Rigele Ao, Wei Liang, Zimo Wang, Qiaoyu Li, Xingyi Pan, Yonghuan Zhen, Yang An

Cartilage plays an important role in supporting soft tissues, reducing joint friction, and distributing pressure. However, its self-repair capacity is limited due to the lack of blood vessels, nerves, and lymphatic systems. Tissue engineering offers a potential solution to promote cartilage regeneration by combining scaffolds, seed cells, and growth factors. Among these, growth factors play a critical role in regulating cell proliferation, differentiation, and extracellular matrix remodeling. However, their instability, susceptibility to degradation and potential side effects limit their effectiveness. This article reviews the main growth factors used in cartilage tissue engineering and their delivery strategies, including affinity-based delivery, carrier-assisted delivery, stimuli-responsive delivery, spatial structure-based delivery, and cell system-based delivery. Each method shows unique advantages in enhancing the delivery efficiency and specificity of growth factors but also faces challenges such as cost, biocompatibility, and safety. Future research needs to further optimize these strategies to achieve more efficient, safe, and economical delivery of growth factors, thereby advancing the clinical application of cartilage tissue engineering.

软骨在支撑软组织、减少关节摩擦和分散压力方面发挥着重要作用。然而,由于缺乏血管、神经和淋巴系统,软骨的自我修复能力有限。组织工程通过结合支架、种子细胞和生长因子,为促进软骨再生提供了一种潜在的解决方案。其中,生长因子在调节细胞增殖、分化和细胞外基质重塑方面起着至关重要的作用。然而,生长因子的不稳定性、易降解性和潜在的副作用限制了其有效性。本文回顾了软骨组织工程中使用的主要生长因子及其递送策略,包括亲和性递送、载体辅助递送、刺激响应递送、空间结构递送和细胞系统递送。每种方法在提高生长因子的输送效率和特异性方面都显示出独特的优势,但也面临着成本、生物相容性和安全性等挑战。未来的研究需要进一步优化这些策略,以实现更高效、安全和经济的生长因子输送,从而推动软骨组织工程的临床应用。
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引用次数: 0
Tissue-Engineered Three-Dimensional Platforms for Disease Modeling and Therapeutic Development. 用于疾病建模和治疗开发的组织工程三维平台。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-09 DOI: 10.1089/ten.TEB.2024.0212
Erika E Wheeler, J Kent Leach

Three-dimensional (3D) tissue-engineered models are under investigation to recapitulate tissue architecture and functionality, thereby overcoming limitations of traditional two-dimensional cultures and preclinical animal models. This review highlights recent developments in 3D platforms designed to model diseases in vitro that affect numerous tissues and organs, including cardiovascular, gastrointestinal, bone marrow, neural, reproductive, and pulmonary systems. We discuss current technologies for engineered tissue models, highlighting the advantages, limitations, and important considerations for modeling tissues and diseases. Lastly, we discuss future advancements necessary to enhance the reliability of 3D models of tissue development and disease.

目前正在研究三维(3D)组织工程模型,以再现组织结构和功能,从而克服传统 2D 培养和临床前动物模型的局限性。本综述重点介绍了三维平台的最新进展,这些平台旨在为影响心血管、胃肠道、骨髓、神经、生殖和肺系统等多种组织和器官的疾病建立体外模型。我们讨论了当前的工程组织模型技术,强调了建模组织和疾病的优势、局限性和重要注意事项。最后,我们讨论了未来提高组织发育和疾病三维模型可靠性所需的进步。
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引用次数: 0
Advancing Cartilage Tissue Engineering: A Review of 3D Bioprinting Approaches and Bioink Properties. 推进软骨组织工程:三维生物打印方法和生物墨水特性综述。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-09 DOI: 10.1089/ten.teb.2024.0168
Gabriele Boretti, Arsalan Amirfallah, Kyle J Edmunds, Helena Hamzehpour, Ólafur E Sigurjónsson

Articular cartilage is crucial in human physiology, and its degeneration poses a significant public health challenge. While recent advancements in 3D bioprinting and tissue engineering show promise for cartilage regeneration, there remains a gap between research findings and clinical application. This review critically examines the mechanical and biological properties of hyaline cartilage, along with current 3D manufacturing methods and analysis techniques. Moreover, we provide a quantitative synthesis of bioink properties used in cartilage tissue engineering. After screening 181 initial works, 33 studies using extrusion bioprinting were analyzed and synthesized, presenting results that indicate the main materials, cells, and methods utilized for mechanical and biological evaluation. Altogether, this review motivates the standardization of mechanical analyses and biomaterial assessments of 3D bioprinted constructs to clarify their chondrogenic potential.

关节软骨对人体生理至关重要,其退化对公共卫生构成了重大挑战。虽然三维生物打印和组织工程学的最新进展显示了软骨再生的前景,但研究成果与临床应用之间仍存在差距。本综述批判性地研究了透明软骨的机械和生物特性,以及当前的三维制造方法和分析技术。此外,我们还对软骨组织工程中使用的生物墨水特性进行了定量综述。在对 181 项初步研究进行筛选后,我们对 33 项使用挤压生物打印技术的研究进行了分析和综合,结果表明了机械和生物评估所使用的主要材料、细胞和方法。总之,这篇综述推动了三维生物打印构建物的机械分析和生物材料评估的标准化,以明确其软骨生成潜力。
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引用次数: 0
Strategies for Preventing Esophageal Stenosis After Endoscopic Submucosal Dissection and Progress in Stem Cell-Based Therapies. 预防 ESD 后食管狭窄的策略和干细胞疗法的进展。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-01 Epub Date: 2024-02-14 DOI: 10.1089/ten.TEB.2023.0316
Shujun Ye, Jingjing Hu, Daxu Zhang, Shuo Zhao, Xiaonan Shi, Weilong Li, Jingyi Wang, Weiping Guan, Li Yan

Endoscopic submucosal dissection (ESD) has been widely used in the early neoplasia of the esophagus. However, postoperative esophageal stenosis is a big problem, particularly when a large circumferential proportion of esophageal mucosa is resected. Currently, there are several methods available to prevent esophageal stenosis after ESD, including steroid administration, esophageal stent implantation, and endoscopic balloon dilation (EBD). However, the therapeutic effects of these are not yet satisfactory. Stem cell-based therapies has shown promising potential in reconstructing tissue structure and restoring tissue function. In this study, we discussed the current strategies for preventing esophageal stenosis after ESD and perspectives of stem cell-based therapies for the prevention of esophageal stenosis.

内镜粘膜下剥离术(ESD)已被广泛应用于食管早期肿瘤的治疗。然而,术后食管狭窄是一个大问题,尤其是当切除的食管粘膜周缘比例较大时。目前,有几种方法可以预防 ESD 术后食管狭窄,包括类固醇用药、食管支架植入和内镜下球囊扩张(EBD)。然而,这些方法的治疗效果尚不令人满意。以干细胞为基础的疗法在重建组织结构和恢复组织功能方面具有广阔的前景。在此,我们讨论了目前预防ESD后食管狭窄的策略,以及干细胞疗法预防食管狭窄的前景。
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引用次数: 0
Optimizing Tissue Engineering for Clinical Relevance in Rotator Cuff Repair. 优化组织工程,提高肩袖修复的临床实用性。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-01 Epub Date: 2024-04-29 DOI: 10.1089/ten.TEB.2023.0320
Maxwell S Durtschi, Sungwoo Kim, Jiannan Li, Carolyn Kim, Constance Chu, Emilie Cheung, Marc Safran, Geoff Abrams, Yunzhi Peter Yang

Rotator cuff tear (RCT) is the most common cause of disability in the upper extremity. It results in 4.5 million physician visits in the United States every year and is the most common etiology of shoulder conditions evaluated by orthopedic surgeons. Over 460,000 RCT repair surgeries are performed in the United States annually. Rotator cuff (RC) retear and failure to heal remain significant postoperative complications. Literature suggests that the retear rates can range from 29.5% to as high as 94%. Weakened and irregular enthesis regeneration is a crucial factor in postsurgical failure. Although commercially available RC repair grafts have been introduced to augment RC enthesis repair, they have been associated with mixed clinical outcomes. These grafts lack appropriate biological cues such as stem cells and signaling molecules at the bone-tendon interface. In addition, they do little to prevent fibrovascular scar tissue formation, which causes the RC to be susceptible to retear. Advances in tissue engineering have demonstrated that mesenchymal stem cells (MSCs) and growth factors (GFs) enhance RC enthesis regeneration in animal models. These models show that delivering MSCs and GFs to the site of RCT enhances native enthesis repair and leads to greater mechanical strength. In addition, these models demonstrate that MSCs and GFs may be delivered through a variety of methods including direct injection, saturation of repair materials, and loaded microspheres. Grafts that incorporate MSCs and GFs enhance anti-inflammation, osteogenesis, angiogenesis, and chondrogenesis in the RC repair process. It is crucial that the techniques that have shown success in animal models are incorporated into the clinical setting. A gap currently exists between the promising biological factors that have been investigated in animal models and the RC repair grafts that can be used in the clinical setting. Future RC repair grafts must allow for stable implantation and fixation, be compatible with current arthroscopic techniques, and have the capability to deliver MSCs and/or GFs.

肩袖撕裂(RCT)是导致上肢残疾的最常见原因。1 在美国,每年有450万人次因肩袖撕裂而就诊,这也是骨科医生评估肩部疾病的最常见病因。文献表明,再撕裂率从 29.5% 到高达 94% 不等6,7。8 虽然市场上已有 RC 修复移植物用于增强 RC 肌腱修复,但其临床疗效参差不齐9,10。这些移植物缺乏适当的生物线索,如骨腱界面的干细胞和信号分子。9,10这些移植物缺乏适当的生物线索,如骨-肌腱界面上的干细胞和信号分子。此外,它们几乎无法防止纤维血管瘢痕组织的形成,从而导致 RC 易于再次撕裂。组织工程学的研究进展表明,间充质干细胞(MSCs)和生长因子(GFs)可增强动物模型中 RC 内膜的再生。这些模型显示,将间充质干细胞和生长因子输送到 RC 撕裂部位可增强原生假体的修复,并带来更大的机械强度。此外,这些模型还证明了间充质干细胞和凝血因子可通过多种方法输送,包括直接注射、修复材料饱和和负载微球。含有间充质干细胞和谷胱甘肽的移植物可在 RC 修复过程中增强抗炎、骨生成、血管生成和软骨生成。将在动物模型中取得成功的技术应用于临床至关重要。目前,在动物模型中研究出的有前景的生物因素与可用于临床的 RC 修复移植物之间还存在差距。未来的 RC 修复移植物必须能稳定植入和固定,与当前的关节镜技术兼容,并能输送间充质干细胞和/或 GF。参考文献(手稿中包含完整引文) 1.Kovacevic (2020) 2.Moran (2023) 3.Piper (2018) 4.IData (2018) 5.Yamaura (2023) 6.Park (2021) 7.戴维(2023 年) 8.斯米塔纳(2017) 9.沃尔顿(2007 年) 10.索勒(2007 年)
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引用次数: 0
Rosalind Franklin Society Proudly Announces the 2023 Award Recipient for Tissue Engineering Part B. 罗莎琳德-富兰克林学会自豪地宣布 2023 年组织工程 B 部分获奖者。
IF 5.1 2区 医学 Q2 CELL & TISSUE ENGINEERING Pub Date : 2024-10-01 DOI: 10.1089/ten.teb.2024.17785.rfs2023
Johnna S Temenoff
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引用次数: 0
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Tissue Engineering. Part B, Reviews
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