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tissue engineered trachea

Fariba Ghorbani, Mansoureh Feizabadi, Roya Farzanegan, Esmaeil Vaziri, Saeed Samani, Seyedamirmohammad Lajevardi, Lida Moradi, Mohammad Behgam Shadmehr
The present study evaluated tracheal regeneration studies using scientometric and co-occurrence analysis in order to identify the most important topics and assess their trends over the time. In order to provide the adequate search options, PubMed, Scopus and Web of Science (WOS) were used to cover various categories such as keywords, countries, organizations, and authors. Search results were obtained by employing Bibexcel . Co-occurrence analysis was applied to evaluate the publications. Finally, scientific maps, author's network, and country contributions were depicted using VOSviewer and NetDraw...
October 19, 2016: Tissue Engineering. Part B, Reviews
Margot Den Hondt, Bart M Vanaudenaerde, Erik K Verbeken, Jan J Vranckx
BACKGROUND: Successful trachea transplantation comprises the use of biocompatible constructs with little immune-reactivity, submucosal revascularization and creation of an epithelial covering. Allogenic chondrocytes might be protected from an overt immune-response due to physical isolation. Our aim was to evaluate in-vivo biocompatibility of allotracheae, stripped of their highly-immunogenic inner lining. Secondly, we established whether these constructs might serve as suitable scaffolds for autologous epithelial grafting...
October 4, 2016: Acta Chirurgica Belgica
Farzaneh Safshekan, Mohammad Tafazzoli-Shadpour, Majid Abdouss, Mohammad B Shadmehr
The physiological performance of trachea is highly dependent on its mechanical behavior, and therefore, the mechanical properties of its components. Mechanical characterization of trachea is key to succeed in new treatments such as tissue engineering, which requires the utilization of scaffolds which are mechanically compatible with the native human trachea. In this study, after isolating human trachea samples from brain-dead cases and proper storage, we assessed the viscoelastic properties of tracheal cartilage, smooth muscle and connective tissue, based on stress relaxation tests (at 5% and 10% strains for cartilage and 20%, 30% and 40% for smooth muscle and connective tissue)...
September 12, 2016: Journal of Biomechanical Engineering
Stellan Hertegård
PURPOSE OF REVIEW: Tissue engineering is a rapidly expanding field in medicine and involves regeneration and restoration of many organs, including larynx and the airways. Currently, this is not included in routine practice; however, a number of clinical trials in humans are ongoing or starting. This review will cover publications during the past 2 years and the focus is on larynx and trachea. RECENT FINDINGS: Recent reports concern the development and investigations of cell therapies, including biological factors such as growth factors which promote healing of damage and increased vascular support of the tissue...
August 31, 2016: Current Opinion in Otolaryngology & Head and Neck Surgery
Liping Zhao, Sumati Sundaram, Andrew V Le, Angela H Huang, Jiasheng Zhang, Go Hatachi, Arkadi Beloiartsev, Michael G Caty, Tai Yi, Katherine Leiby, Ashley Gard, Mehmet H Kural, Liqiong Gui, Kevin A Rocco, Amogh Sivarapatna, Elizabeth Calle, Allison Greaney, Luca Urbani, Panagiotis Maghsoudlou, Alan Burns, Paolo DeCoppi, Laura E Niklason
Here we report the creation of a novel tracheal construct in the form of an engineered, acellular tissue-stent biocomposite trachea (TSBT). Allogeneic or xenogeneic smooth muscle cells are cultured on polyglycolic acid polymer-metal stent scaffold leading to the formation of a tissue comprising cells, their deposited collagenous matrix, and the stent material. Thorough decellularization then produces a final acellular tubular construct. Engineered TSBTs were tested as end-to-end tracheal replacements in 11 rats and 3 nonhuman primates...
September 2016: Tissue Engineering. Part A
Shannon R Moore, Céline Heu, Nicole Y C Yu, Renee M Whan, Ulf R Knothe, Stefan Milz, Melissa L Knothe Tate
: : An abundance of surgical studies during the past 2 centuries provide empirical evidence of periosteum's regenerative power for reconstructing tissues as diverse as trachea and bone. This study aimed to develop quantitative, efficacy-based measures, thereby providing translational guidelines for the use of periosteum to harness the body's own healing potential and generate target tissues. The current study quantitatively and qualitatively demonstrated tissue generation modulated by a periosteum substitute membrane that replicates the structural constituents of native periosteum (elastin, collagen, progenitor cells) and its barrier, extracellular, and cellular properties...
July 27, 2016: Stem Cells Translational Medicine
P Lange, H Shah, M Birchall, P Sibbons, T Ansari
There is a clinical need to provide replacement tracheal tissue for the pediatric population affected by congenital defects, as current surgical solutions are not universally applicable. A potential solution is to use tissue engineered scaffold as the framework for regenerating autologous tissue. Rabbit trachea were used and different detergents (Triton x-100 and sodium deoxycholate) and enzymes (DNAse/RNAse) investigated to create a decellularization protocol. Each reagent was initially tested individually and the outcome used to design a combined protocol...
July 15, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Tendy Chiang, Victoria Pepper, Cameron Best, Ekene Onwuka, Christopher K Breuer
OBJECTIVE: To provide a state-of-the-art review discussing recent achievements in tissue engineered tracheal reconstruction. DATA SOURCES AND REVIEW METHODS: A structured PubMed search of the current literature up to and including October 2015. Representative articles that discuss the translation of tissue engineered tracheal grafts (TETG) were reviewed. CONCLUSIONS: The integration of a biologically compatible support with autologous cells has resulted in successful regeneration of respiratory epithelium, cartilage, and vascularization with graft patency, although the optimal construct composition has yet to be defined...
November 2016: Annals of Otology, Rhinology, and Laryngology
Aleksander Góra, Damian Pliszka, Shayanti Mukherjee, Seeram Ramakrishna
Tissue engineering of tubular organs such as the blood vessel, trachea gastrointestinal tract, urinary tract are of the great interest due to the high amount of surgeries performed annually on those organs. Development in tissue engineering in recent years and promising results, showed need to investigate more complex constructs that need to be designed in special manner. Stent technology remain the most widely used procedure to restore functions of tubular tissues after cancer treatment, or after organ removal due to traumatic accidents...
January 2016: Journal of Nanoscience and Nanotechnology
Wojciech Barczak, Pawel Golusiński, Lukasz Luczewski, Wiktoria M Suchorska, Michal M Masternak, Wojciech Golusiński
Head and neck squamous cell carcinoma is the sixth leading cause of cancer worldwide. The most common risk factors are carcinogens (tobacco, alcohol), and infection of the human papilloma virus. Surgery is still considered as the treatment of choice in case of head and neck cancer, followed by a reconstructive surgery to enhance the quality of life in the patients. However, the widespread use of artificial implants does not provide appropriate physiological activities and often cannot act as a long-term solution for the patients...
October 2016: Biotechnology Letters
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No abstract text is available yet for this article.
June 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
I S Kurgansky, V N Makhutov, S A Lepekhova
The objective of the present study was to analyze the current literature concerning mechanisms underlying the development of tracheal stenosis, new methods for the treatment and prevention of this condition. The main cause behind the formation of cicatrical stenosis of trachea is believed to be long-term artificial lung ventilation whereas the principal factors responsible for the injury to the tracheal wall include the impact of the cuff and the free end of the endotracheal tube, reflux of duodenal and gastric contents, concomitant infection, and the involvement of the autoimmune component...
2016: Vestnik Otorinolaringologii
Lindsey M Ott, Taylor A Zabel, Natalie K Walker, Ashley L Farris, Jason T Chakroff, Devan G Ohst, Jed K Johnson, Steven H Gehrke, Robert A Weatherly, Michael S Detamore
Tracheal stenosis can become a fatal condition, and current treatments include augmentation of the airway with autologous tissue. A tissue-engineered approach would not require a donor source, while providing an implant that meets both surgeons' and patients' needs. A fibrous, polymeric scaffold organized in gradient bilayers of polycaprolactone (PCL) and poly-lactic-co-glycolic acid (PLGA) with 3D printed structural ring supports, inspired by the native trachea rings, could meet this need. The purpose of the current study was to characterize the tracheal scaffolds with mechanical testing models to determine the design most suitable for maintaining a patent airway...
April 2016: Biomedical Materials
Fei Sun, Yuan Jiang, Yanfei Xu, Hongcan Shi, Siquan Zhang, Xingchen Liu, Shu Pan, Gang Ye, Weidong Zhang, Fangbiao Zhang, Chonghao Zhong
Decellularization techniques have been widely used as an alternative strategy for organ reconstruction. This study investigated the mechanical, pro-angiogenic and in vivo biocompatibility properties of decellularized airway matrices cross-linked with genipin. New Zealand rabbit tracheae were decellularized and cross-linked with genipin, a naturally derived agent. The results demonstrated that, a significant (p < 0.05) increase in the secant modulus was computed for the cross-linked tracheae, compared to the decellularized samples...
2016: Scientific Reports
Christopher Johnson, Priyanka Sheshadri, Jessica M Ketchum, Lokesh K Narayanan, Paul M Weinberger, Rohan A Shirwaiker
Infection or damage to the trachea, a thin walled and cartilage reinforced conduit that connects the pharynx and larynx to the lungs, leads to serious respiratory medical conditions which can often prove fatal. Current clinical strategies for complex tracheal reconstruction are of limited availability and efficacy, but tissue engineering and regenerative medicine approaches may provide viable alternatives. In this study, we have developed a new "hybrid graft" approach that utilizes decellularized tracheal tissue along with a resorbable polymer scaffold, and holds promise for potential clinical applications...
June 2016: Journal of the Mechanical Behavior of Biomedical Materials
Shih-Han Hung, Chin-Hui Su, Sey-En Lin, How Tseng
OBJECTIVES/HYPOTHESIS: Ideal methods for reconstructing the tracheal structure and restoring tracheal function following damage to the trachea or removal of the trachea have not been developed. The purpose of this study is to evaluate the feasibility of using a whole segment decellularized tracheal scaffold to reconstruct the trachea. STUDY DESIGN: Prospective experimental design. SETTING: In vivo rabbit model. METHODS: Trachea scaffolds were created using our previously developed freeze-dry-sonication-sodium dodecyl sulfate (SDS), [FDSS] decellularization process...
March 1, 2016: Laryngoscope
Elisa Barrera-Ramírez, Edna Rico-Escobar, Rubén E Garrido-Cardona
Tissue engineering offers, through new technologies, an ex vivo generation of organs and functional tissues as grafts for transplants, for the improvement and substitution of biological functions, with an absence of immunological response. The treatment of extended tracheal lesions is a substitution of the affected segment; nevertheless, the allogeneic transplant has failed and the use of synthetic materials has not had good results. New tissue engineering technology is being developed to offer a tracheal graft for a posterior implantation...
January 2016: Gaceta Médica de México
Stephanie L Bogan, Gui Zhen Teoh, Martin A Birchall
An ideal tracheal scaffold must withstand luminal collapse yet be flexible, have a sufficient degree of porosity to permit vascular and cellular ingrowth, but also be airtight and must facilitate growth of functional airway epithelium to avoid infection and aid in mucocilliary clearance. Finally, the scaffold must also be biocompatible to avoid implant rejection. Over the last 40 years, efforts to design and manufacture the airway have been undertaken worldwide but success has been limited and far apart. As a result, tracheal resection with primary repair remains the Gold Standard of care for patients presenting with airway disorders and malignancies...
July 2016: Journal of Cellular Biochemistry
Elizabeth G Mansfield, Vaughn K Greene, Debra T Auguste
UNLABELLED: Tracheal damage, abnormality or absence can result from the growth of tumors or from Congenital High Airway Obstruction Syndrome. No optimal or routine treatment has been established for tracheal repair, despite numerous attempts with natural and artificial prostheses. The fetal trachea is comprised of cartilaginous rings connected by an elastomeric tissue. In an effort to design an engineered trachea replacement, we have synthesized 2-hydroxyethyl methacrylate hydrogels with moduli of 67 ± 3...
March 2016: Acta Biomaterialia
Ryosuke Satake, Makoto Komura, Hiroko Komura, Tetsuro Kodaka, Kan Terawaki, Kenichi Ikebukuro, Hiroaki Komuro, Hironobu Yonekawa, Kazuto Hoshi, Tsuyoshi Takato, Yasuhide Nakayama
BACKGROUND: Collagenous connective tissue membranes (biosheets) are useful for engineering cardiovascular tissue in tissue engineering. The aim was to evaluate the use of biosheets as a potential tracheal substitute material in vivo in a rabbit model. METHODS: Group 1: Rectangular-shaped Gore-Tex (4×7mm) was implanted into a 3×6mm defect created in the midventral portion of the cervical trachea. Group 2: Rectangular-shaped dermis was implanted into a tracheotomy of similar size...
February 2016: Journal of Pediatric Surgery
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