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Li K, Li Z, Duan S, Shen Y, Li Z. Organobase/urea catalyzed ring opening polymerization of 3‐methyl‐1, 4‐dioxan‐2‐one to prepare chemically recyclable poly(ether ester). JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kai Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Zheng Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Shiwei Duan
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
| | - Yong Shen
- College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering Qingdao University of Science and Technology Qingdao China
- College of Chemical Engineering Qingdao University of Science and Technology Qingdao China
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Fathi P, Capron G, Tripathi I, Misra S, Ostadhossein F, Selmic L, Rowitz B, Pan D. Computed tomography-guided additive manufacturing of Personalized Absorbable Gastrointestinal Stents for intestinal fistulae and perforations. Biomaterials 2019; 228:119542. [PMID: 31678842 DOI: 10.1016/j.biomaterials.2019.119542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 10/05/2019] [Accepted: 10/10/2019] [Indexed: 12/12/2022]
Abstract
Small bowel perforations and obstructions are relatively frequent surgical emergencies, are potentially life-threatening, and have multiple etiologies. In general, treatment requires urgent surgical repair or resection and at times can lead to further complications. Stents may be used to help with healing intestinal perforations but use is limited as currently available stents are non-absorbable, are manufactured in a narrow size range, and/or are limited to usage in locations that are accessible for endoscopic removal post-healing. The use of 3D-printed bioresorbable polymeric stents will provide patients with a stent that can prevent leakage, is tailored specifically to their geometry, and will be usable within the small bowel, which is not amenable to endoscopic stent placement. This work focused on the rapid manufacturing of gastrointestinal stents composed of a polycaprolactone-polydioxanone (PCL-PDO) composite. Dynamic Mechanical Analysis (DMA) tests were conducted to separately analyze the effects of composition, the filament formation process, and physiological temperature on the PCL-PDO material properties. The proposed stent design was then modeled using computer-aided design, and Finite Element Analysis (FEA) was used to simulate the effects of physiologically relevant forces on stent integrity. The presence of hydrolysable ester bonds was confirmed using FT-IR spectroscopy. In vitro studies were used to evaluate the biocompatibility of the polymer composite. Further analyses were conducted through stent placement in ex vivo pig intestines. PCL-PDO stents were then 3D-printed and placed in vivo in a pig model.
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Affiliation(s)
- Parinaz Fathi
- Departments of Bioengineering, Materials Science and Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, United States
| | | | - Indu Tripathi
- Departments of Bioengineering, Materials Science and Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, United States
| | - Santosh Misra
- Departments of Bioengineering, Materials Science and Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, United States
| | - Fatemeh Ostadhossein
- Departments of Bioengineering, Materials Science and Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, United States
| | - Laura Selmic
- College of Veterinary Medicine, University of Illinois, Urbana, Champaign, IL, United States
| | - Blair Rowitz
- Carle Foundation Hospital, Urbana, IL, United States; Carle Illinois College of Medicine, University of Illinois, Urbana, Champaign, IL, United States
| | - Dipanjan Pan
- Departments of Bioengineering, Materials Science and Engineering, and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, United States; Carle Illinois College of Medicine, University of Illinois, Urbana, Champaign, IL, United States.
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Goonoo N, Jeetah R, Bhaw-Luximon A, Jhurry D. Polydioxanone-based bio-materials for tissue engineering and drug/gene delivery applications. Eur J Pharm Biopharm 2015; 97:371-91. [PMID: 26614558 DOI: 10.1016/j.ejpb.2015.05.024] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 11/22/2022]
Abstract
Since the commercialization of polydioxanone (PDX) as a biodegradable monofilament suture by Ethicon in 1981, the polymer has received only limited interest until recently. The limitations of polylactide-co-glycolide (PLGA) coupled with the growing need for materials with enhanced features and the advent of new fabrication techniques such as electrospinning have revived interest for PDX in medical devices, tissue engineering and drug delivery applications. Electrospun PDX mats show comparable mechanical properties as the major structural components of native vascular extracellular matrix (ECM) i.e. collagen and elastin. In addition, PDX's unique shape memory property provides rebound and kink resistance when fabricated into vascular conduits. The synthesis of methyl dioxanone (MeDX) monomer and copolymers of dioxanone (DX) and MeDX have opened up new perspectives for poly(ester-ether)s, enabling the design of the next generation of tissue engineering scaffolds for application in regenerating such tissues as arteries, peripheral nerve and bone. Tailoring of polymer properties and their formulation as nanoparticles, nanomicelles or nanofibers have brought along important developments in the area of controlled drug or gene delivery. This paper reviews the synthesis of PDX and its copolymers and provides for the first time an exhaustive account of its applications in the (bio)medical field with focus on tissue engineering and drug/gene delivery.
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Affiliation(s)
- Nowsheen Goonoo
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius
| | - Roubeena Jeetah
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius
| | - Archana Bhaw-Luximon
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius
| | - Dhanjay Jhurry
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, MSIRI Building, University of Mauritius, Réduit, Mauritius.
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Goonoo N, Bhaw-Luximon A, Rodriguez IA, Wesner D, Schönherr H, Bowlin GL, Jhurry D. Poly(ester-ether)s: III. assessment of cell behaviour on nanofibrous scaffolds of PCL, PLLA and PDX blended with amorphous PMeDX. J Mater Chem B 2015; 3:673-687. [DOI: 10.1039/c4tb01350f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
SEM images of HDF cells on scaffolds: (a) PCL/PMeDX: 93/7-good adhesion and proliferation, (b) PDX/PMeDX: 98/2-good adhesion, proliferation & infiltration and (c) PLLA/PMeDX: 85/15-good proliferation and infiltration.
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Affiliation(s)
- N. Goonoo
- ANDI Centre of Excellence for Biomedical and Biomaterials Research
- University of Mauritius
- Réduit
- Mauritius
| | - A. Bhaw-Luximon
- ANDI Centre of Excellence for Biomedical and Biomaterials Research
- University of Mauritius
- Réduit
- Mauritius
| | - I. A. Rodriguez
- Biomedical Engineering Department
- University of Memphis
- Memphis
- USA
| | - D. Wesner
- Physical Chemistry I
- Department of Chemistry and Biology
- University of Siegen
- 57076 Siegen
- Germany
| | - H. Schönherr
- Physical Chemistry I
- Department of Chemistry and Biology
- University of Siegen
- 57076 Siegen
- Germany
| | - G. L. Bowlin
- Biomedical Engineering Department
- University of Memphis
- Memphis
- USA
| | - D. Jhurry
- ANDI Centre of Excellence for Biomedical and Biomaterials Research
- University of Mauritius
- Réduit
- Mauritius
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Bhaw-Luximon A, Jeetah R, Goonoo N, Veeren A, Jugdawa Y, Jhurry D. A review of polymeric biomaterials research for tissue engineering and drug delivery applications at the Centre for Biomedical and Biomaterials Research, Mauritius. AFRICAN JOURNAL OF SCIENCE TECHNOLOGY INNOVATION & DEVELOPMENT 2014. [DOI: 10.1080/20421338.2014.924270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Goonoo N, Bhaw-Luximon A, Rodriguez IA, Wesner D, Schönherr H, Bowlin GL, Jhurry D. Poly(ester-ether)s: II. Properties of electrospun nanofibres from polydioxanone and poly(methyl dioxanone) blends and human fibroblast cellular proliferation. Biomater Sci 2013; 2:339-351. [PMID: 32481861 DOI: 10.1039/c3bm60211g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This article deals with an in-depth study of the thermal, mechanical and degradation behaviours of nanofibres from polydioxanone (PDX) and polydl-3-methyl-1,4-dioxan-2-one (PMeDX) and a comparison with their blend films. Varying ratios of both polymers were blended and electrospun from solution. Electrospun fibres exhibited a melting transition at 109 °C independently of the PMeDX content, which corresponds to the melting of PDX nanofibres. As a result of the drawing process, PMeDX had a reduced plasticizing effect on PDX. In general, it was observed that overall crystallinity of the fibres decreased from 53% to 36% with increasing PMeDX content and this impacted on their mechanical properties. The Young's moduli decreased as the PMeDX content of the fibres increased. However, an increase in strain at break and peak stress was noted as a result of a decrease in the fibre diameter. AFM images of the electrospun fibres showed an increasing degree of morphological heterogeneity with increasing PMeDX content. Thermal degradation studies showed that electrospun mats were thermally more stable than blend films, as confirmed by a two-fold increase in activation energy. The hydrolytic degradation of the electrospun mats conducted in phosphate buffer solution at 37 °C showed that the degradation followed a surface erosion mechanism as opposed to bulk degradation observed for blend films. Degradation of fibres was found to be mainly dependent on their diameter. On the other hand, the degradation of blend films depended on the overall crystallinity of the blends. Electrospun PDX/PMeDX nanofibrous scaffolds were also subjected to cell viability studies with human dermal fibroblasts, in which they did not show illicit response and demonstrated excellent cell attachment and proliferation.
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Affiliation(s)
- Nowsheen Goonoo
- ANDI Centre of Excellence for Biomedical and Biomaterials Research, MSIRI Building and University of Mauritius, Réduit, Mauritius.
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