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Valley ZA, Karp A, Garber D. Safety and Adverse Events of Medialization Thyroplasty: A Systematic Review. Laryngoscope 2024; 134:1994-2004. [PMID: 37916789 DOI: 10.1002/lary.31141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 10/09/2023] [Accepted: 10/11/2023] [Indexed: 11/03/2023]
Abstract
INTRODUCTION Unilateral vocal fold paralysis or paresis (UVFP) is a condition that causes significant morbidity due to dysphonia, dysphagia, and aspiration. Type I medialization thyroplasty (MT) is the current mainstay surgical treatment for UVFP. Though widely considered a safe procedure, concerns exist over possible airway complications which can lead to overnight observation. Herein, we report a systematic review of the safety and adverse events of MT to aid in determining the safety of same-day discharge. DATA SOURCES PubMed and Embase databases. REVIEW METHODS Our search identified studies investigating complications associated with MT. Articles were selected if published between January 1, 1989 and March 15, 2023. Abstracts were screened, and data were extracted from included studies. Only Type I MT procedures were included; case reports were excluded. Participant characteristics, intervention details, results, and adverse events were extracted. RESULTS The database query identified 751 abstracts, of which 46 studies met eligibility criteria. A total of 2426 patients underwent MT. The most common implant was Silastic (n = 898, 37.0%) followed by Gore-Tex (n = 664, 27.4%). There were 254 (10.5%) total complications reported; 110 (4.5%) were considered major. The most common complication was nonobstructive hematoma (n = 59, 2.4%) followed by hemorrhage (n = 36, 1.5%). Implant extrusion (n = 24, 0.99%) or displacement (n = 15, 0.62%) occurred mostly in Silastic and Gore-Tex implants. Same-day discharge occurred with 429 patients and was not associated with adverse events. CONCLUSIONS UVFP can be reliably improved by MT with a low risk of complications. Outpatient MT is a promising treatment with a favorable safety profile. Laryngoscope, 134:1994-2004, 2024.
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Affiliation(s)
- Zachary A Valley
- School of Medicine, New York Medical College, Valhalla, New York, USA
| | - Avrohom Karp
- School of Medicine, New York Medical College, Valhalla, New York, USA
| | - David Garber
- Department of Otolaryngology-Head and Neck Surgery, Westchester Medical Center, Valhalla, New York, USA
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D'Oria M, Manoranjithan S, Scoville C, Vogel TR, Cheung S, Calvagna C, Lepidi S, Bath J. Systematic review of risk factors and outcomes of post-implantation syndrome following endovascular aortic repair. J Vasc Surg 2024; 79:1240-1250.e4. [PMID: 38122858 DOI: 10.1016/j.jvs.2023.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/08/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE Post implantation syndrome (PIS) is an early systemic inflammatory response following endovascular aortic repair (EVAR). The response is variable in patients and the clinical significance of PIS upon outcomes is unknown. This study aims to evaluate the incidence, risk factors, and prognostic implication of PIS. METHODS Systematic literature review and analysis was performed in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) and Cochrane guidelines of PubMed, Scopus, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials. Eligible English-language studies regarding PIS after infrarenal EVAR were included, after removing duplicates. RESULTS After screening, 31 studies were included. A total of 2847 patients were reviewed, with mean age of 70.7 years, of which 2012 (90.4%) were male, with a pooled mean follow-up of 26.1 months. PIS was reported in 25.3% of cases, with mean aneurysm diameter of 56.4 cm. Polytetrafluoroethylene (PTFE) grafts were utilized in 794 patients (27.9%) with polyester in 1839 (64.6%). White blood cell count, C-reactive protein, interleukin (IL)-6, IL-8, and IL-10 levels were all significantly elevated postoperatively. Thirty-day outcomes included type I endoleak rate of 0.8%, type II endoleak rate of 1.7%, reintervention rate of 0.35%, and mortality rate of 0.25%. Subgroup pooled analysis of patients with PIS (n = 309) vs No-PIS (n = 691) revealed that polyester (n = 642), rather than PTFE (n = 234) grafts, were associated with a higher rate of PIS (94.8% vs 3.7%; P = .0001), White blood cell count was higher in the PIS group both preoperatively (7.61 vs 6.76 × 109/L; P = .04) and postoperatively (15.0 vs 9.8 × 109/L; P = .0007) and IL-6 levels were higher in the PIS group postoperatively (98.6 vs 25.2 pg/mL; P = .02). Aneurysm diameter and amount of chronic or new thrombus within the aneurysm sac was not identified as a risk factor for PIS. Pooled outcomes of patients with PIS vs No-PIS demonstrated a significantly higher rate of 30-day mortality (0.6% vs 0%; P = .03) and major adverse cardiac events (5.8% vs 0.43%; P < .0001) without any differences seen in reintervention or 30-day type I or type II endoleaks. CONCLUSIONS This systematic review suggests that polyester grafts are strongly associated with PIS compared with PTFE. Interestingly, this report is suggestive of an association between 30-day mortality and major adverse cardiac events and PIS. Given these clinical sequelae, consideration for use of PTFE over polyester grafts to reduce the incidence of PIS may be a simple step to improve overall outcome. Further, exploration of the relationship between inflammatory mediators associated with PIS and mortality and cardiac complications may engender deeper understanding of risks, leading to eventual mitigation of harm for patients experiencing PIS.
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Affiliation(s)
- Mario D'Oria
- Division of Vascular and Endovascular Surgery, Cardio-Thoraco-Vascular Department, University Hospital of Trieste ASUGI, Trieste, Italy
| | | | - Caryn Scoville
- Health Sciences Library, University of Missouri, Columbia, MO
| | - Todd R Vogel
- Division of Vascular Surgery, University of Missouri, Columbia, MO
| | - Steven Cheung
- Division of Vascular Surgery, University of Missouri, Columbia, MO
| | - Cristiano Calvagna
- Division of Vascular and Endovascular Surgery, Cardio-Thoraco-Vascular Department, University Hospital of Trieste ASUGI, Trieste, Italy
| | - Sandro Lepidi
- Division of Vascular and Endovascular Surgery, Cardio-Thoraco-Vascular Department, University Hospital of Trieste ASUGI, Trieste, Italy
| | - Jonathan Bath
- Division of Vascular Surgery, University of Missouri, Columbia, MO.
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Tanaka S, Nakata E, Ozaki T, Toyooka S. Reconstruction method for massive lateral chest wall sarcoma using titanium plates and mesh: a case report. J Cardiothorac Surg 2024; 19:245. [PMID: 38632587 PMCID: PMC11025187 DOI: 10.1186/s13019-024-02639-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/11/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Very large chest wall resections can lead to acute thoracic insufficiency syndrome due to the interdependence of lung expansion and thoracic volume. Chest wall tumor surgeries often encounter complications, with the size of the chest wall defect being a significant predictor. Several methods for large chest wall reconstruction have been described, aiming to provide stability, prevent flail chest, and ensure airtight closure. However, no single method fulfills all requirements. Composite chest wall reconstruction using titanium plates and Gore-Tex patches has shown the potential to minimize physiologic abnormalities caused by extensive defects. CASE PRESENTATION A 42-year-old man with myxofibrosarcoma underwent multiple surgeries, chemotherapies, and radiation therapies due to repeated local recurrences. After right arm amputation and resection of the right third to fifth ribs, a local recurrence was detected. A 30 × 40 cm chest wall defect was resected en bloc, and a titanium plate was used for three-dimensional formability, preventing flail chest and volume loss. The Gore-Tex patch was then reconstructed into an arch shape, allowing lateral thoracic mobility. The patient recovered well and did not experience respiratory dysfunction or local recurrence but later succumbed to distant metastasis. CONCLUSIONS In this case, the combination of a titanium plate and a Gore-Tex patch proved effective for reconstructing massive lateral chest wall defects. The approach provided stability, preserved thoracic volume, and allowed for lateral mobility. While the patient achieved a successful outcome in terms of local recurrence and respiratory function, distant metastasis remained a challenge for myxofibrosarcoma patients, and its impact on long-term prognosis requires further investigation. Nevertheless, the described procedure offers promise for managing extensive chest wall defects.
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Affiliation(s)
- Shin Tanaka
- Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Eiji Nakata
- Department of Orthopedic Surgery, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Toshifumi Ozaki
- Department of Orthopedic Surgery, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Shinichi Toyooka
- Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
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Yuan S, Yang X, Zhang N, Zhang J, Yuan S, Wang Z. Molecular insights into the adsorption and penetration of oil droplets on hydrophobic membrane in membrane distillation. Water Res 2024; 253:121329. [PMID: 38387269 DOI: 10.1016/j.watres.2024.121329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/19/2024] [Accepted: 02/16/2024] [Indexed: 02/24/2024]
Abstract
Membrane fouling induced by oily substances significantly constrains membrane distillation performance in treating hypersaline oily wastewater. Overcoming this challenge necessitates a heightened fundamental understanding of the oil fouling phenomenon. Herein, the adsorption and penetration mechanism of oil droplets on hydrophobic membranes in membrane distillation process was investigated at the molecular level. Our results demonstrated that the adsorption and penetration of oil droplets were divided into four stages, including the free stage, contact stage, spreading stage, and equilibrium stage. Due to the extensive non-polar surface distribution of the polytetrafluoroethylene (PTFE) membrane (comprising 95.41 %), the interaction between oil molecules and PTFE was primarily governed by van der Waals interaction. Continuous oil droplet membrane fouling model revealed that the new oil droplet molecules preferred to penetrate into membrane pores where oil droplets already existed. The penetration of resin (a component of medium-quality oil droplets) onto PTFE membrane pores required the "pre-paving" of light crude oil. Finally, the ΔE quantitative structure-activity relationships (QSAR) models were developed to evaluate the penetration mechanism of pollutant molecules on the PTFE membrane. This research provides new insights for improving sustainable membrane distillation technologies in treating saline oily wastewater.
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Affiliation(s)
- Shideng Yuan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Xin Yang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Na Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Jiaojiao Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Shiling Yuan
- Key Lab of Colloid and Interface Chemistry, Shandong University, Jinan 250100, PR China
| | - Zhining Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China.
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Dellestable A, Cheval D, Kerfant N, Stindel E, Le Nen D, Letissier H. Long-term outcomes of trapeziectomy with Gore-Tex® ligament reconstruction for trapezio-metacarpal osteoarthritis. Orthop Traumatol Surg Res 2024; 110:103366. [PMID: 35840046 DOI: 10.1016/j.otsr.2022.103366] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 01/05/2022] [Accepted: 01/25/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Trapezio-metacarpal osteoarthritis is a common condition for which the reference standard treatment after failure of non-operative measures is trapeziectomy. Several techniques have been devised to avoid proximal migration of the first metacarpal bone (M1) with impingement on the scaphoid bone. We have developed a Gore-Tex® ligament reconstruction technique that avoids potential complications of tendon harvesting. The objective of this study was to assess the long-term outcomes of this technique. HYPOTHESIS Trapeziectomy with Gore-Tex® ligament reconstruction is a reliable option for providing lasting pain relief in patients with trapezio-metacarpal osteoarthritis. MATERIALS AND METHODS We conducted an observational, single-centre, single-surgeon, retrospective cohort study in consecutive patients managed by primary trapeziectomy. We excluded patients with revision trapeziectomy or less than 10 years' follow-up. The primary outcome was event-free survival, defined as absence of revision surgery and of a numerical rating scale score for pain above 3/10. The secondary criteria were clinical tolerance of the Gore-Tex® implant and radiological changes. The patients were assessed at last follow-up either in person or during a teleconsultation. RESULTS Of 78 included joints, 54 were assessed during patient visits and 24 by teleconsultation. At 10 years, the event-free survival rate was 91.3%, and 60.3% of patients were free of pain. Evidence of osteolysis was visible in 24% of patients. No patient experienced clinical intolerance of the Gore-Tex® implant. The mean Disabilities of Arm, Shoulder and Hand score was 25.5. Metacarpo-phalangeal hyperextension was significantly increased, to 30.6°, and the mean trapezial space ratio was significantly decreased, to 39.1% of the baseline value. CONCLUSION Long-term event-free survival was high. Functional outcomes and pain were similar to previous reports. Trapeziectomy with Gore-Tex® ligament reconstruction obviates the need for tendon harvesting. Osteolysis developed in some patients but did not correlate with clinical intolerance. Long-term clinical and radiological monitoring is in order after Gore-Tex® implantation. LEVEL OF EVIDENCE IV, Observational, single-centre, single-surgeon, retrospective cohort study.
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Affiliation(s)
- Arthur Dellestable
- Service de chirurgie orthopédique et traumatologique, hôpital de la Cavale Blanche, boulevard Tanguy-Prigent, 29200 Brest, France
| | - Damien Cheval
- Service de chirurgie orthopédique et traumatologique, centre hospitalier De Cornouaille, avenue Yves-Thépot, 29107 Quimper, France
| | - Nathalie Kerfant
- LaTIM, INSERM, UMR 1101, SFR IBSAM, avenue Foch, 29200 Brest, France; Université de Bretagne Occidentale, UBO, 29200 Brest, France; Service de chirurgie plastique et reconstructrice, hôpital de la Cavale Blanche, boulevard Tanguy-Prigent, 29200 Brest, France
| | - Eric Stindel
- Service de chirurgie orthopédique et traumatologique, hôpital de la Cavale Blanche, boulevard Tanguy-Prigent, 29200 Brest, France; LaTIM, INSERM, UMR 1101, SFR IBSAM, avenue Foch, 29200 Brest, France; Université de Bretagne Occidentale, UBO, 29200 Brest, France
| | - Dominique Le Nen
- Service de chirurgie orthopédique et traumatologique, hôpital de la Cavale Blanche, boulevard Tanguy-Prigent, 29200 Brest, France; Université de Bretagne Occidentale, UBO, 29200 Brest, France
| | - Hoël Letissier
- Service de chirurgie orthopédique et traumatologique, hôpital de la Cavale Blanche, boulevard Tanguy-Prigent, 29200 Brest, France; LaTIM, INSERM, UMR 1101, SFR IBSAM, avenue Foch, 29200 Brest, France; Université de Bretagne Occidentale, UBO, 29200 Brest, France.
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Wang J, Li XY, Qian HL, Wang XW, Wang YX, Ren KF, Ji J. Robust, Sprayable, and Multifunctional Hydrogel Coating through a Polycation Reinforced (PCR) Surface Bridging Strategy. Adv Mater 2024; 36:e2310216. [PMID: 38237136 DOI: 10.1002/adma.202310216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/15/2023] [Indexed: 01/25/2024]
Abstract
The sprayable hydrogel coatings that can establish robust adhesion onto diverse materials and devices hold enormous potential; however, a significant challenge persists due to monomer hydration, which impedes even coverage during spraying and induces inadequate adhesion post-gelation. Herein, a polycation-reinforced (PCR) surface bridging strategy is presented to achieve tough and sprayable hydrogel coatings onto diverse materials. The polycations offer superior wettability and instant electrostatic interactions with plasma-treated substrates, facilitating an effective spraying application. This PCR-based hydrogel coatings demonstrate tough adhesion performance to inert PTFE and silicone, including remarkable shear strength (161 ± 49 kPa for PTFE), interfacial toughness (198 ± 27 J m-2 for PTFE), and notable tolerance to cyclic tension (10 000 cycles, 200% strain, silicone). Meanwhile, this method can be applied to various hydrogel formulations, offering diverse functionalities, including underwater adhesion, lubrication, and drug delivery. Furthermore, the PCR concept enables the conformal construction of durable hydrogel coatings onto sophisticated medical devices like cardiovascular stents. Given its simplicity and adaptability, this approach paves an avenue for incorporating hydrogels onto solid surfaces and potentially promotes untapped applications.
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Affiliation(s)
- Jing Wang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
- State Key Laboratory of Transvascular Implantation Devices, The Second Affiliated Hospital Zhejiang University School of Medicine, 88 Jiefang Rd, Hangzhou, 310009, P. R. China
| | - Xin-Yi Li
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Hong-Lin Qian
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xing-Wang Wang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - You-Xiang Wang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Ke-Feng Ren
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
- State Key Laboratory of Transvascular Implantation Devices, The Second Affiliated Hospital Zhejiang University School of Medicine, 88 Jiefang Rd, Hangzhou, 310009, P. R. China
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Turri A, Omar O, Trobos M, Thomsen P, Dahlin C. Modulation of gene expression and bone formation by expanded and dense polytetrafluoroethylene membranes during guided bone regeneration: An experimental study. Clin Implant Dent Relat Res 2024; 26:266-280. [PMID: 37357340 DOI: 10.1111/cid.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/28/2023] [Accepted: 06/07/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND Nonresorbable membranes promote bone formation during guided bone regeneration (GBR), yet the relationships between membrane properties and molecular changes in the surrounding tissue are largely unknown. AIM To compare the molecular events in the overlying soft tissue, the membrane, and the underlying bone defect during GBR using dual-layered expanded membranes versus dense polytetrafluoroethylene (PTFE) membranes. MATERIALS AND METHODS Rat femur defects were treated with either dense PTFE (d-PTFE) or dual-layered expanded PTFE (dual e-PTFE) or left untreated as a sham. Samples were collected after 6 and 28 days for gene expression, histology, and histomorphometry analyses. RESULTS The two membranes promoted the overall bone formation compared to sham. Defects treated with dual e-PTFE exhibited a significantly higher proportion of new bone in the top central region after 28 days. Compared to that in the sham, the soft tissue in the dual e-PTFE group showed 2-fold higher expression of genes related to regeneration (FGF-2 and FOXO1) and vascularization (VEGF). Furthermore, compared to cells in the d-PTFE group, cells in the dual e-PTFE showed 2.5-fold higher expression of genes related to osteogenic differentiation (BMP-2), regeneration (FGF-2 and COL1A1), and vascularization (VEGF), in parallel with lower expression of proinflammatory cytokines (IL-6 and TNF-α). Multiple correlations were found between the molecular activities in membrane-adherent cells and those in the soft tissue. CONCLUSION Selective surface modification of the two sides of the e-PTFE membrane constitutes a novel means of modulating the tissue response and promoting bone regeneration.
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Affiliation(s)
- Alberto Turri
- The Brånemark Clinic, Public Dental Service, Region Västra Götaland, Gothenburg, Sweden
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Margarita Trobos
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Christer Dahlin
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Oral, Maxillofacial Surgery and Research and Development, NU-Hospital Organisation, Trollhättan, Sweden
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Zhang Q, Chen J, Wang H, Xie D, Yang Z, Hu J, Luo H, Wan Y. Water-Induced Expanded Bilayer Vascular Graft with Good Hemocompatibility and Biocompatibility. Macromol Biosci 2024; 24:e2300401. [PMID: 38154146 DOI: 10.1002/mabi.202300401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Shape memory polymer (SMP) vascular grafts are promising interventional vascular grafts for cardiovascular disease (CAD) treatment; However, hemocompatibility and biocompatibility, which are the critical issues for the SMP vascular grafts, are not systematically concerned. Furthermore, the water-induced SMP grafts are more convenient and safer than the thermally induced ones in case of the bioapplication. Herein, in this work, the new water-induced expanded bilayer vascular graft with the inner layer of crosslinked poly(ε-caprolactone) (cPCL) and the outer layer of water-induced SMP of regenerated chitosan/polyvinyl alcohol (RCS/PVA) are prepared by hot pressing and programming approaches. The results show that the inner and outer layer surfaces of the prepared grafts are smooth, and they exhibit good interfacial interaction properties. The bilayer grafts show good mechanical properties and can be expanded in water with a diameter expansion of ≈30%. When compared with commercial expanded polytetrafluoroethylene (ePTFE), the bilayer graft shows better hemocompatibility (platelet adhesion, hemolysis rate, various clotting times, and plasma recalcification time (PRT)) and in vitro and in vivo biocompatibility, which thus is a promising material for the vascular graft.
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Affiliation(s)
- Quanchao Zhang
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Jingyi Chen
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Huiwen Wang
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Denghang Xie
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Zhiwei Yang
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Jian Hu
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Honglin Luo
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Yizao Wan
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang, 330013, China
- School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
- Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300384, China
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Nandi S, Kumar RN, Dhandapani A, Iqbal J. Characterization of microplastics in outdoor and indoor air in Ranchi, Jharkhand, India: First insights from the region. Environ Pollut 2024; 346:123543. [PMID: 38367691 DOI: 10.1016/j.envpol.2024.123543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/26/2024] [Accepted: 02/08/2024] [Indexed: 02/19/2024]
Abstract
The study focused on detecting and characterizing microplastics in outdoor and indoor air in Ranchi, Jharkhand, India during post-monsoon (2022) and winter (2023). Stereo microscopic analysis showed that plastic fibres had a dominant presence, fragments were less abundant, whereas fewer films could be detected in indoor and outdoor air. The atmospheric deposition of microplastics outdoors observed 465 ± 27 particles/m2/day in PM10 and 12104 ± 665 and 13833 ± 1152 particles/m2/day in PM2.5 in quartz and PTFE, respectively during the post-monsoon months. During winter, microplastic deposition rates in PM10 samples were found to be 689 ± 52 particles/m2/day and 19789 ± 2957 and 30087 ± 13402 in quartz and PTFE particles/m2/day respectively in PM2.5. The mean deposition rate in indoor environment during post-monsoon was 8.3 × 104 and 1.03 × 105 particles/m2/day in winter. During the post-monsoon period in PM10, there were fibres from 7.7 to 40 μm and fragments from 2.3 μm to 8.6 μm. Indoor atmospheric microplastics, fibres ranged from 1.2 to 47 μm and fragments from 0.9 to 16 μm present respectively during the post-monsoon season. Fibres and fragment sizes witnessed during winter were 3.6-6.9 μm and 2.3-34 μm, respectively. Indoor air films measured in the range of 4.1-9.6 μm. Fourier transform infrared analysis showed that outdoor air contained polyethylene, polypropylene, Polystyrene, whereas indoor air had polyvinyl chloride. Polyethylene mainly was present in outdoor air, with lesser polypropylene and polystyrene than indoors, where polyvinyl chloride and polyethylene were in dominant proportions. Elemental mapping of outdoor and indoor air samples showed the presence of elements on the microplastics. The HYSPLIT models suggest that the particles predominantly were coming from North-West during the post-monsoon season. Principal component analysis indicated wind speed and direction influencing the abundance of microplastics. Microplastics concentration showed strong seasonal influence and potential to act as reservoir of contaminants.
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Affiliation(s)
- Shreya Nandi
- Department of Civil and Environmental Engineering, Birla Institute of Technology Mesra, Ranchi, 835215, Jharkhand, India.
| | - Radhakrishnan Naresh Kumar
- Department of Civil and Environmental Engineering, Birla Institute of Technology Mesra, Ranchi, 835215, Jharkhand, India.
| | - Abisheg Dhandapani
- Department of Civil and Environmental Engineering, Birla Institute of Technology Mesra, Ranchi, 835215, Jharkhand, India.
| | - Jawed Iqbal
- Department of Civil and Environmental Engineering, Birla Institute of Technology Mesra, Ranchi, 835215, Jharkhand, India.
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10
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Soda T, Kiuchi H, Koida Y, Imanaka T, Oida T, Matsuoka Y, Sekii K. Transvaginal Polytetrafluoroethylene Mesh Surgery for Pelvic Organ Prolapse: One-Year Safety and Efficacy Results. Urology 2024; 186:131-138. [PMID: 38367711 DOI: 10.1016/j.urology.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/26/2023] [Accepted: 01/03/2024] [Indexed: 02/19/2024]
Abstract
OBJECTIVE To evaluate the efficacy and safety of the polytetrafluoroethylene (PTFE) mesh by comparing conventionally used polypropylene (PP) mesh in tension-free vaginal mesh (TVM) surgery for pelvic organ prolapse (POP). METHODS We conducted an observational cohort study of patients who underwent TVM using a PTFE or PP mesh. PTFE was used from June 2019 to May 2021, and PP mesh from January 2018 to May 2019. Outcomes included POP recurrence, perioperative complications, and patient satisfaction. Restricted mean survival time was used to analyze POP recurrence, comparing the time to recurrence between the two groups at 1year after TVM. RESULTS Of 171 patients, 104 underwent PP mesh placement (PP group) and 67 underwent PTFE mesh placement (PTFE group). POP recurrence was observed in 10 and nine patients in the PP and PTFE groups, respectively. The mean time until the recurrence in the PTFE group was significantly shorter than that in the PP group (restricted mean survival time difference: -20.3days; 95% CI, -40.1 to -0.5; P = .044). Subgroup analysis revealed the meantime until recurrence was significantly shorter in the PTFE group for postoperative periods 3months or less, ages >70years, and POP stage ≥3. There were no intervention cases in either group and no significant differences in the perioperative complications. Patient satisfaction was greater in the PTFE group after 3months postoperatively. CONCLUSION TVM surgery with a PTFE mesh is more prone to recurrence than that with a PP mesh, but with higher patient satisfaction. Within 3months of surgery, elderly patients and those with advanced-stage POP require care to prevent recurrence.
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Affiliation(s)
- Tetsuji Soda
- Department of Urology, Osaka Central Hospital, Osaka, Japan
| | - Hiroshi Kiuchi
- Department of Urology, Osaka Central Hospital, Osaka, Japan.
| | - Yohei Koida
- Department of Urology, Osaka Central Hospital, Osaka, Japan
| | - Takahiro Imanaka
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takeshi Oida
- Department of Urology, Suita Tokushukai Hospital, Suita, Japan
| | - Yasuhiro Matsuoka
- Department of Urology, Japan Community Health Organization Osaka Hospital, Osaka, Japan
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11
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Chakraborty D, Boni R, Mills BN, Cheng J, Komissarov I, Gerber SA, Sobolewski R. High-Density Polyethylene Custom Focusing Lenses for High-Resolution Transient Terahertz Biomedical Imaging Sensors. Sensors (Basel) 2024; 24:2066. [PMID: 38610278 PMCID: PMC11014130 DOI: 10.3390/s24072066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/28/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024]
Abstract
Transient terahertz time-domain spectroscopy (THz-TDS) imaging has emerged as a novel non-ionizing and noninvasive biomedical imaging modality, designed for the detection and characterization of a variety of tissue malignancies due to their high signal-to-noise ratio and submillimeter resolution. We report our design of a pair of aspheric focusing lenses using a commercially available lens-design software that resulted in about 200 × 200-μm2 focal spot size corresponding to the 1-THz frequency. The lenses are made of high-density polyethylene (HDPE) obtained using a lathe fabrication and are integrated into a THz-TDS system that includes low-temperature GaAs photoconductive antennae as both a THz emitter and detector. The system is used to generate high-resolution, two-dimensional (2D) images of formalin-fixed, paraffin-embedded murine pancreas tissue blocks. The performance of these focusing lenses is compared to the older system based on a pair of short-focal-length, hemispherical polytetrafluoroethylene (TeflonTM) lenses and is characterized using THz-domain measurements, resulting in 2D maps of the tissue refractive index and absorption coefficient as imaging markers. For a quantitative evaluation of the lens effect on the image resolution, we formulated a lateral resolution parameter, R2080, defined as the distance required for a 20-80% transition of the imaging marker from the bare paraffin region to the tissue region in the same image frame. The R2080 parameter clearly demonstrates the advantage of the HDPE lenses over TeflonTM lenses. The lens-design approach presented here can be successfully implemented in other THz-TDS setups with known THz emitter and detector specifications.
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Affiliation(s)
- Debamitra Chakraborty
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Robert Boni
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Bradley N. Mills
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642-0001, USA; (B.N.M.); (S.A.G.)
| | - Jing Cheng
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
| | - Ivan Komissarov
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627-0231, USA
| | - Scott A. Gerber
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642-0001, USA; (B.N.M.); (S.A.G.)
| | - Roman Sobolewski
- Materials Science Program, University of Rochester, Rochester, NY 14627-0166, USA; (D.C.); (J.C.)
- Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, USA; (R.B.); (I.K.)
- Department of Electrical and Computer Engineering, University of Rochester, Rochester, NY 14627-0231, USA
- Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171, USA
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12
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Turner ME, Blum KM, Watanabe T, Schwarz EL, Nabavinia M, Leland JT, Villarreal DJ, Schwartzman WE, Chou TH, Baker PB, Matsumura G, Krishnamurthy R, Yates AR, Hor KN, Humphrey JD, Marsden AL, Stacy MR, Shinoka T, Breuer CK. Tissue engineered vascular grafts are resistant to the formation of dystrophic calcification. Nat Commun 2024; 15:2187. [PMID: 38467617 PMCID: PMC10928115 DOI: 10.1038/s41467-024-46431-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/22/2024] [Indexed: 03/13/2024] Open
Abstract
Advancements in congenital heart surgery have heightened the importance of durable biomaterials for adult survivors. Dystrophic calcification poses a significant risk to the long-term viability of prosthetic biomaterials in these procedures. Herein, we describe the natural history of calcification in the most frequently used vascular conduits, expanded polytetrafluoroethylene grafts. Through a retrospective clinical study and an ovine model, we compare the degree of calcification between tissue-engineered vascular grafts and polytetrafluoroethylene grafts. Results indicate superior durability in tissue-engineered vascular grafts, displaying reduced late-term calcification in both clinical studies (p < 0.001) and animal models (p < 0.0001). Further assessments of graft compliance reveal that tissue-engineered vascular grafts maintain greater compliance (p < 0.0001) and distensibility (p < 0.001) than polytetrafluoroethylene grafts. These properties improve graft hemodynamic performance, as validated through computational fluid dynamics simulations. We demonstrate the promise of tissue engineered vascular grafts, remaining compliant and distensible while resisting long-term calcification, to enhance the long-term success of congenital heart surgeries.
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Affiliation(s)
- Mackenzie E Turner
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Molecular Cellular and Developmental Biology Graduate Program, The Ohio State University, Columbus, OH, USA
| | - Kevin M Blum
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Tatsuya Watanabe
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Erica L Schwarz
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Mahboubeh Nabavinia
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Joseph T Leland
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Delaney J Villarreal
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, Columbus, OH, USA
| | - William E Schwartzman
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- The Ohio State University College of Medicine, Columbus, OH, USA
| | - Ting-Heng Chou
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Exercise and Health Science, National Taipei University of Nursing and Health Sciences, Taipei City, Taiwan
| | - Peter B Baker
- Pathology Department at Nationwide Children's Hospital and The Ohio State University, Columbus, OH, USA
| | - Goki Matsumura
- Department of Medical Safety Management, Tokyo Women's Medical University, Tokyo, Japan
| | - Rajesh Krishnamurthy
- Department of Radiology, Nationwide Children's Hospital and The Ohio State University, Columbus, OH, USA
| | - Andrew R Yates
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Kan N Hor
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Jay D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Alison L Marsden
- Departments of Pediatrics and Bioengineering, Stanford University, Stanford, CA, USA
| | - Mitchel R Stacy
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Surgery, The Ohio State University College of Medicine, Columbus, OH, USA
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, USA
| | - Toshiharu Shinoka
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Cardiothoracic Surgery, Nationwide Children's Hospital, Columbus, OH, USA
| | - Christopher K Breuer
- Center for Regenerative Medicine, Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
- Department of Surgery, The Ohio State University College of Medicine, Columbus, OH, USA.
- Department of Surgery, Nationwide Children's Hospital, Columbus, OH, USA.
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13
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Saisho H, Geisler I, Scharfschwerdt M, Sadat N, Zhang X, Puehler T, Ensminger S, Fujita B, Aboud A. Ex vivo evaluation of 3 different right ventricular outflow tract substitutes. Eur J Cardiothorac Surg 2024; 65:ezae081. [PMID: 38479833 DOI: 10.1093/ejcts/ezae081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 02/22/2024] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVES The Ross procedure represents an excellent treatment option in younger patients with aortic stenosis but is limited by poor availability of homografts. In this study, we investigated the hydrodynamic performance of 3 different types of right ventricular outflow tract replacement with pericardium or synthetic material. METHODS Three different types of valved conduits were constructed using pericardium and/or synthetic material (Group PEPE: pericardial cusps and pericardial conduit, Group PEPR: pericardial cusps and Dacron conduit, Group PRPR: expanded polytetrafluoroethylene cusps and Dacron conduit). The conduits were designed according to the Ozaki method. Their hydrodynamic performance (effective orifice area, mean pressure gradient and leakage volume) were evaluated in a mock circulation loop at different hydrodynamic conditions. RESULTS Hydrodynamic assessment showed significantly larger effective orifice area of PEPE and PEPR compared to PRPR under all conditions and there were no significant differences between PEPE and PEPR [for condition 2: PEPE 2.43 (2.35-2.54) cm2, PEPR: 2.42 (2.4-2.5) cm2, PRPR: 2.08 (1.97-2.21) cm2, adjusted pairwise comparisons: PEPE versus PEPR: P = 0.80, PEPE versus PRPR: P < 0.001, PEPR versus PRPR: P < 0.001]. Mean pressure gradient was significantly lower for PEPE and PEPR compared with PRPR, whereas no significant differences were seen between PEPE and PEPR. Leakage volume was significantly lower for PEPE and PEPR compared with PRPR under all conditions while leakage was similar between PEPE and PEPR. CONCLUSIONS Pulmonary graft reconstruction with pericardium cusps showed superior hydrodynamic performance compared with polytetrafluoroethylene cusps. Our results suggest that it could be considered as an alternative substitute for right ventricular outflow tract replacement during the Ross procedure.
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Affiliation(s)
- Hiroyuki Saisho
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
| | - Ioana Geisler
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
| | - Michael Scharfschwerdt
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
| | - Najla Sadat
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
| | - Xiling Zhang
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
| | - Thomas Puehler
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
- DZHK (German Center for cardiovascular research), Partner Site Hamburg/Kiel/Luebeck, Germany
| | - Stephan Ensminger
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
- DZHK (German Center for cardiovascular research), Partner Site Hamburg/Kiel/Luebeck, Germany
| | - Buntaro Fujita
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
- DZHK (German Center for cardiovascular research), Partner Site Hamburg/Kiel/Luebeck, Germany
| | - Anas Aboud
- Department of Cardiac and Thoracic Vascular Surgery, University Hospital of Schleswig Holstein, Lübeck, Germany
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14
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Chatzopoulos GS, Koidou VP, Sonnenberger M, Johnson D, Chu H, Wolff LF. Postextraction ridge preservation by using dense PTFE membranes: A systematic review and meta-analysis. J Prosthet Dent 2024; 131:410-419. [PMID: 35410705 DOI: 10.1016/j.prosdent.2022.02.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 12/15/2022]
Abstract
STATEMENT OF PROBLEM The use of dense polytetrafluoroethylene (dPTFE) membranes in alveolar ridge preservation may help reduce the risk of bacterial contamination and infection, maintaining the soft-tissue anatomy. However, systematic reviews on their efficacy in postextraction sites are lacking. PURPOSE The purpose of this systematic review and meta-analysis was to assess the efficacy of alveolar ridge preservation with dPTFE membranes when used alone or in combination with bone grafting materials in postextraction sites. MATERIAL AND METHODS An electronic search up to February 2021 was conducted by using PubMed, Embase, and the Cochrane library to detect studies using dPTFE membranes in postextraction sites. An additional manual search was performed in relevant journals. Clinical and radiographic dimensional changes of the alveolar ridge, histomorphometric, microcomputed tomography, implant-related findings, and rate of complications were recorded. One-dimensional meta-analysis was performed to calculate the overall means and 95% confidence intervals (α=.05). RESULTS A total of 23 studies, 14 randomized controlled trials, 4 retrospective cohort studies, 3 case series, and 2 prospective nonrandomized clinical trials, met the inclusion criteria. Five studies were included in the quantitative analysis. The meta-analysis revealed that the use of dPTFE membranes resulted in a statistically significant (P=.042) increase in clinical keratinized tissue of 3.49 mm (95% confidence interval [CI]: 0.16, 6.83) when compared with extraction alone. Metaregression showed that the difference of 1.10 mm (95% CI: -0.14, 2.35) in the radiographic horizontal measurements was not significant (P=.082), but the difference of 1.06 mm (95% CI: 0.51, 1.62) in the radiographic vertical dimensional change between dPTFE membranes+allograft and extraction alone was statistically significant (P<.001). CONCLUSIONS The use of dPTFE membranes was better than extraction alone in terms of keratinized tissue width and radiographic vertical bone loss.
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Affiliation(s)
- Georgios S Chatzopoulos
- Diplomate of the American Board of Periodontology and Private practice Limited to Periodontics and Implant Dentistry, London, UK; Former Resident, Division of Periodontology, Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minn.
| | - Vasiliki P Koidou
- PhD Candidate, Centre for Oral Immunobiology and Regenerative Medicine and Centre for Oral Clinical Research, Institute of Dentistry, Barts & The London School of Medicine and Dentistry, Queen Mary University London (QMUL), London, UK; Diplomate of the American Board of Periodontology and Former Resident, Division of Periodontology, Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minn
| | - Michelle Sonnenberger
- PhD Candidate, Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minn
| | - Deborah Johnson
- Clinical Professor and Diplomate of the American Board of Periodontology, Division of Periodontology, Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minn
| | - Haitao Chu
- Professor, Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minn; Professor, Clinical Translational Science Institute (CTSI), University of Minnesota, Minneapolis, Minn
| | - Larry F Wolff
- Professor, Division of Periodontology, Department of Developmental and Surgical Sciences, School of Dentistry, University of Minnesota, Minneapolis, Minn
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15
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Kim ER, Lee C, Lee CH, Cho SH. Long-term Outcomes of Polytetrafluoroethylene Bicuspid Pulmonary Valve Replacement. Ann Thorac Surg 2024; 117:535-541. [PMID: 37666352 DOI: 10.1016/j.athoracsur.2023.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/22/2023] [Accepted: 08/07/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND In 2016 we reported promising midterm outcomes of bicuspid pulmonary valve replacement using 0.1-mm polytetrafluoroethylene (PTFE) membrane. This follow-up study analyzes long-term outcomes and risk factors for reintervention and structural valve deterioration (SVD). METHODS We performed a retrospective review of the original 119 patients who underwent PTFE bicuspid pulmonary valve replacement. Median patient age was 16.9 years (range, 0.4-57.1). Reintervention was defined as any surgical or percutaneous catheter procedure on the PTFE valve. SVD was defined as development of a peak pressure gradient ≥ 50 mm Hg or at least a moderate amount of pulmonary regurgitation on follow-up echocardiography. RESULTS The median follow-up duration was 9.5 years. The survival rate was 96.5% at 5 and 10 years, with 2 early and 2 late mortalities. Freedom from reintervention was 90.0% at 5 years and 63.3% at 10 years. Freedom from SVD was 92.8% at 5 years and 51.1% at 10 years, with regurgitation the predominant mode (64.6%). Freedom from both reintervention and SVD at 5 and 10 years were 89.1% and 49.5%, respectively. Multivariable analysis identified smaller valve diameter (hazard ratio, 0.82; P < .001) and more than trivial pulmonary regurgitation at discharge (hazard ratio, 5.81; P < .001) as risk factors for reintervention or SVD. CONCLUSIONS Long-term results of the PTFE bicuspid pulmonary valve replacement were acceptable. However, improvements may be needed to reduce technical error and improve durability. Smaller valve diameter and more than trivial pulmonary regurgitation at discharge were risk factors for reintervention or SVD, warranting careful follow-up for timely reintervention.
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Affiliation(s)
- Eung Re Kim
- Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital, Bucheon-si, Gyeonggi-do, Republic of Korea
| | - Cheul Lee
- Department of Thoracic and Cardiovascular Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Chang-Ha Lee
- Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital, Bucheon-si, Gyeonggi-do, Republic of Korea
| | - Sang-Hoon Cho
- Department of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea
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16
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Gong AJ, Bosworth EC, Garg T, Weiss CR. Prospective Study of Polytetrafluoroethylene-Covered Microplugs and Detachable Coils for Embolization of Pulmonary Arteriovenous Malformations: Technical Results, Procedure Times, and Costs. J Vasc Interv Radiol 2024; 35:362-369. [PMID: 38123126 DOI: 10.1016/j.jvir.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/17/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023] Open
Abstract
PURPOSE To determine time to occlusion and procedure costs of embolization of pulmonary arteriovenous malformations (PAVMs) using a polytetrafluoroethylene-covered microplug compared with embolization using detachable coils. MATERIALS AND METHODS In this prospective study, 37 patients (mean age, 39.1 years [SD ± 17.6]) with 82 PAVMs underwent embolization with microplug or detachable coils between April 2019 and January 2023. Technical success, procedure time intervals, and costs were analyzed. RESULTS In 37 patients, 82 PAVMs and 101 feeding arteries were successfully treated (microplug, 64; microplug + another device, 5; detachable coils alone, 32). Time from embolic device inserted into the catheter to device deployed and time to occlusion differed significantly between microplug and detachable coil cohorts (P < .0001 for both). Embolization with ≥1 microplug had a significantly shorter occlusion time than embolization with detachable coils (median, 10.0 minutes saved per feeding artery) (P < .0001). Compared with detachable coil embolization, microplug embolization saved a median of 9.0 minutes per feeding artery (P < .0001) and reduced room cost by a median of $429 per feeding artery (P < .0001). Device costs per feeding artery did not differ significantly between microplug ($2,790) and detachable coil embolization ($3,147) (P = .87). CONCLUSIONS Compared with coils, microplugs had an equally high technical success rate but significant time to occlusion and room costs savings per feeding artery. Total room cost and device cost together did not differ significantly between microplugs and coils. Microplugs may be considered technically effective and at least cost-neutral for PAVM embolization where clinically appropriate.
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Affiliation(s)
- Anna J Gong
- Russell H. Morgan Department of Radiology and Radiological Science, the Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Eugene C Bosworth
- Russell H. Morgan Department of Radiology and Radiological Science, the Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Tushar Garg
- Russell H. Morgan Department of Radiology and Radiological Science, the Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Clifford R Weiss
- Russell H. Morgan Department of Radiology and Radiological Science, the Johns Hopkins University School of Medicine, Baltimore, Maryland.
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17
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Quintessenza JA. Expanded Polytetrafluoroethylene Valve Leaflets for Pulmonary Valve Replacement: A Step in the Right Direction? Ann Thorac Surg 2024; 117:541-542. [PMID: 37816437 DOI: 10.1016/j.athoracsur.2023.09.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 09/23/2023] [Indexed: 10/12/2023]
Affiliation(s)
- James A Quintessenza
- Heart Institute, Johns Hopkins All Children's Hospital, 501 6th Ave South, St. Petersburg, FL 33701.
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18
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Yang L, Hao X, Gao B, Ren C, Du H, Su X, Zhang D, Bao T, Qiao Z, Cao Q. Endothelialization of PTFE-covered stents for aneurysms and arteriovenous fistulas created in canine carotid arteries. Sci Rep 2024; 14:4803. [PMID: 38413764 PMCID: PMC10899654 DOI: 10.1038/s41598-024-55532-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 02/24/2024] [Indexed: 02/29/2024] Open
Abstract
To investigate the endothelialization of covered and bare stents deployed in the canine carotid arteries and subclavian arteries for treating experimental aneurysms and arteriovenous fistulas, twenty aneurysms were created in 10 dogs, and 20 fistulas in another 10 dogs. The Willis balloon-expandable covered stent and a self-expandable covered stent were used to treat these lesions, and a self-expandable bare stent was deployed in the subclavian artery for comparison. Followed up for up to 12 months, the gross observation, pathological staining, and scanning electronic microscopic data were analyzed. Two weeks after creation of animal model, thirty self-expandable covered stents and ten balloon-expandable covered stents were deployed. Fifteen bare stents were deployed within the left subclavian arteries. Twenty days after stenting, the aneurysm significantly shrank. At 6 months, the thrombi within the aneurysm cavity were organized. Three to 12 months later, most covered and bare stents were covered by a thin transparent or white layer of endothelial intima. Layers of intima or pseudomembrane were formed on the stent 20-40 days after stent deployment. Over three months, the pseudomembrane became organized, thinner, and merged into the vascular wall. Under scanning electronic microscopy, the surface of covered and bare stents had only deposition of collagen fibers and rare endothelial cells 20-40 days after stenting. From three to ten months, the endothelial cells on the internal surface of stent became mature, with spindle, stripe-like or quasi round morphology along the blood flow direction. Over time, the endothelial cells became mature. In conclusion, three months after deployment in canines' arteries, the self-expandable bare and covered stents have mostly been covered by endothelial cells which become maturer over time, whereas the balloon-expandable covered stents do not have complete coverage of endothelial cells at three months, especially for protruding stent struts and areas. Over time, the endothelialization will become mature.
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Affiliation(s)
- Lei Yang
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China.
| | - Xiaohong Hao
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Bulang Gao
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Chunfeng Ren
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Hong Du
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - XianHui Su
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Dongliang Zhang
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Tong Bao
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Zongrong Qiao
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China
| | - Qinying Cao
- Shijiazhuang People's Hospital, Shijiazhuang, 050011, Hebei Province, People's Republic of China.
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Xuan L, Luo J, Qu C, Guo P, Yi W, Yang J, Yan Y, Guan H, Zhou P, Huang R. Predictive metabolomic signatures for safety assessment of three plastic nanoparticles using intestinal organoids. Sci Total Environ 2024; 913:169606. [PMID: 38159744 DOI: 10.1016/j.scitotenv.2023.169606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/06/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Nanoplastic particles are pervasive environmental contaminants with potential health risks, while mouse intestinal organoids provide accurate in vitro models for studying these interactions. Metabolomics, especially through LC-MS, enables detailed cellular response studies, and there's a novel interest in comparing metabolic changes across nanoparticle species using gut organoids. This study used a mouse intestinal organoid combined with cell model to explore the differences in metabolites and toxicity mechanisms induced by exposure to three nanoplastics (PS, PTFE, and PMMA). The results showed that PS, PTFE, and PMMA exposure reduced mitochondrial membrane potential, intracellular ROS accumulation and oxidative stress, and inhibited the AKT/mTOR signaling pathway. Non-targeted metabolomics results confirmed that three types of nanoplastic particles regulate cellular status by regulating fatty acid metabolism, nucleotide metabolism, necroptosis and autophagy pathways. More importantly, these representative metabolites were further validated in model groups after mouse intestinal organoids and HCT116 cells were exposed to the respective NPs, indicating that organoid metabolomics results can be used to effectively predict toxicity. Untargeted metabolomics is sensitive enough to detect subtle metabolomic changes when functional cellular analysis shows no significant differences. Overall, our study reveals the underlying metabolic mechanism of NPs-induced intestinal organoid toxicity and provides new insights into the possible adverse consequences of NPs.
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Affiliation(s)
- Lihui Xuan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China.
| | - Jinhua Luo
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China.
| | - Can Qu
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China.
| | - Peiyu Guo
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China.
| | - Wensen Yi
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China
| | - Jingjing Yang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China
| | - Yuhui Yan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China
| | - Hua Guan
- Department of Radiation Biology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Pingkun Zhou
- Department of Radiation Biology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Ruixue Huang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, Hunan Province 410078, China.
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20
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Volteas P, Giannopoulos S, Vatsa S, Cheung EC, Virvilis D. A Unique Case Of A Giant Popliteal Artery Aneurysm Presenting As Popliteal Mass. Port J Card Thorac Vasc Surg 2024; 30:75-79. [PMID: 38345877 DOI: 10.48729/pjctvs.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 12/02/2023] [Indexed: 02/15/2024]
Abstract
INTRODUCTION Popliteal artery aneurysms (PAA) can be very challenging, especially in cases of very large PAAs, with a minimal number of case reports published in the literature. METHODS This is a case report of a 68-year-old male patient with hypertension, hyperlipidemia, diabetes, and schizophrenia who was found to have a giant (10x8x6cm) partially thrombosed PAA, treated with interposition polytetrafluoroethylene (PTFE) graft via a posterior approach. RESULTS Under general anesthesia, the patient was placed in a prone position, and an extended lazy "S" incision was made on the popliteal fossa. After obtaining proximal and distal exposure, the aneurysm sac was skeletonized, preserving the popliteal vein and the tibial nerve. After proximal and distal control was obtained, the patient was systemically heparinized, and the aneurysm sac was opened. Some genicular branches were ligated inside the aneurysm, and part of the aneurysm sac was excised. A 7 mm PTFE graft was used for reconstruction in an end-to-end fashion. Suction drains were placed in the popliteal space, and the fascia and skin were approximated. The patient was discharged home on the 2nd postoperative day on aspirin and statin with ultrasound surveillance. The patient has remained asymptomatic during follow-up with a patent graft. CONCLUSIONS Open surgical repair constitutes the gold standard of care for huge PAAs to prevent distal thromboembolic events and mass pressure effects from the aneurysm. Documentation of additional experience with open repair of huge PAAs would be beneficial and could help clinical decision-making.
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Affiliation(s)
- Panagiotis Volteas
- Division of Vascular and Endovascular Surgery, Department of Surgery, Stony Brook University Hospital, Stony Brook, NY, USA
| | - Stefanos Giannopoulos
- Division of Vascular and Endovascular Surgery, Department of Surgery, Stony Brook University Hospital, Stony Brook, NY, USA
| | - Sonakshi Vatsa
- Division of Vascular and Endovascular Surgery, Department of Surgery, Stony Brook University Hospital, Stony Brook, NY, USA
| | - Edwin C Cheung
- Division of Vascular and Endovascular Surgery, Department of Surgery, Stony Brook University Hospital, Stony Brook, NY, USA
| | - Dimitrios Virvilis
- Department of Vascular and Endovascular Surgery, St Francis Hospital & Heart Center, Roslyn, NY, USA
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Tao G, Li J, Mu Y, Zhang X. A Three-Dimensional Hydrophobic Surface-Enhanced Raman Scattering Sensor via a Silver-Coated Polytetrafluoroethylene Membrane for the Direct Trace Detection of Molecules in Water. Biosensors (Basel) 2024; 14:88. [PMID: 38392007 PMCID: PMC10886991 DOI: 10.3390/bios14020088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/24/2024]
Abstract
We report a three-dimensional (3D) SERS substrate consisting of a silver nanoparticle (AgNP) coating on the skeleton-fiber surfaces of a polytetrafluoroethylene (PTFE) membrane. Simple thermal evaporation was employed to deposit Ag onto the PTFE membrane to produce grape-shaped AgNPs. The 3D-distributed AgNPs exhibit not only strong localized surface plasmon resonance (LSPR) but also strong hydrophobic performance. High-density hotspots via silver nano-grape structures and nanogaps, the large 3D interaction volume, and the large total surface area, in combination with the hydrophobic enrichment of the specimen, facilitate high-sensitivity sensing performance of such a SERS substrate for the direct detection of low-concentration molecules in water. An enhancement factor of up to 1.97 × 1010 was achieved in the direct detection of R6G molecules in water with a concentration of 10-13 mol/L. The lowest detection limit of 100 ppt was reached in the detection of melamine in water. Such a SERS sensor may have potential applications in food-safety control, environmental water pollution monitoring, and biomedical analysis.
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Affiliation(s)
- Guanwei Tao
- Institute of Information Photonics Technology, Beijing University of Technology, Beijing 100124, China
| | - Jiajun Li
- Institute of Information Photonics Technology, Beijing University of Technology, Beijing 100124, China
| | - Yunyun Mu
- Institute of Information Photonics Technology, Beijing University of Technology, Beijing 100124, China
| | - Xinping Zhang
- Institute of Information Photonics Technology, Beijing University of Technology, Beijing 100124, China
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22
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Matsushima S, Matsuhisa H, Wakita K, Tsujimoto T, Takagaki N, Honda I, Oshima Y, Kawanami O, Okada K. Expanded polytetrafluoroethylene conduits with curved and handsewn bileaflet designs for right ventricular outflow tract reconstruction. J Thorac Cardiovasc Surg 2024; 167:439-449.e6. [PMID: 37356475 DOI: 10.1016/j.jtcvs.2023.05.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/30/2023] [Accepted: 05/16/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVE This study reviewed the application of curved and bileaflet designs to pulmonary expanded polytetrafluoroethylene conduits with diameters of 10 to 16 mm and characterized this conduit on in vitro experiment, including particle image velocimetry. METHODS All patients who received this conduit between 2010 and 2022 were evaluated. Three 16-mm conduits were tested in a circulatory simulator at different cardiac outputs (1.5-3.6 L/minute) and bending angles (130°-150°). RESULTS Fifty consecutive patients were included. The median operative body weight was 8.4 kg (range, 2.6-12 kg); 10-, 12-, 14-, and 16-mm conduits were used in 1, 4, 6, and 39 patients, respectively. In 34 patients, the conduit was implanted in a heterotopic position. The overall survival rate was 89% at 8 years with 3 nonvalve-related deaths. There were 10 conduit replacements; 5 16-mm conduits (after 8 years) and 1 12-mm conduit (after 6 years) due to conduit stenosis, and the remaining 4 for reasons other than conduit failure. Freedom from conduit replacement was 89% and 82% at 5 and 8 years, respectively. Linear mixed-effects models with echocardiographic data implied that 16-mm conduits were durable with a peak velocity <3.5 m/second and without moderate/severe regurgitation until the patient's weight reached 25 kg. In experiments, peak transvalvular pressure gradients were 11.5 to 25.5 mm Hg, regurgitant fractions were 8.0% to 14.4%, and peak Reynolds shear stress in midsystolic phase was 29 to 318 Pa. CONCLUSIONS Our conduits with curved and bileaflet designs have acceptable clinical durability and proven hydrodynamic profiles, which eliminate valve regurgitation and serve as a reliable bridge to subsequent conduit replacement.
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Affiliation(s)
- Shunsuke Matsushima
- Department of Cardiovascular Surgery, Kobe Children's Hospital, Kobe, Japan; Division of Cardiovascular Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Hironori Matsuhisa
- Department of Cardiovascular Surgery, Kobe Children's Hospital, Kobe, Japan.
| | - Kohki Wakita
- Department of Mechanical Engineering, University of Hyogo, Himeji, Japan
| | - Takanori Tsujimoto
- Division of Cardiovascular Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Naohisa Takagaki
- Department of Mechanical Engineering, University of Hyogo, Himeji, Japan; Advanced Medical Engineering Research Institute, University of Hyogo, Himeji, Japan
| | - Itsuro Honda
- Department of Mechanical Engineering, University of Hyogo, Himeji, Japan; Advanced Medical Engineering Research Institute, University of Hyogo, Himeji, Japan
| | - Yoshihiro Oshima
- Department of Cardiovascular Surgery, Kobe Children's Hospital, Kobe, Japan
| | - Osamu Kawanami
- Department of Mechanical Engineering, University of Hyogo, Himeji, Japan; Advanced Medical Engineering Research Institute, University of Hyogo, Himeji, Japan
| | - Kenji Okada
- Division of Cardiovascular Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Zimińska A, Lipska I, Gajewska J, Draszanowska A, Simões M, Olszewska MA. Antibacterial and Antibiofilm Effects of Photodynamic Treatment with Curcuma L. and Trans-Cinnamaldehyde against Listeria monocytogenes. Molecules 2024; 29:685. [PMID: 38338429 PMCID: PMC10856099 DOI: 10.3390/molecules29030685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/22/2023] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
Photodynamic inactivation (PDI) is a highly effective treatment that can eliminate harmful microorganisms in a variety of settings. This study explored the efficacy of a curcumin-rich extract, Curcuma L., (Cur)- and essential oil component, trans-cinnamaldehyde, (Ca)-mediated PDI against Listeria monocytogenes ATCC 15313 (Lm) including planktonic cells and established biofilms on silicone rubber (Si), polytetrafluoroethylene (PTFE), stainless steel 316 (SS), and polyethylene terephthalate (PET). Applying Ca- and Cur-mediated PDI resulted in planktonic cell reductions of 2.7 and 6.4 log CFU/cm2, respectively. Flow cytometric measurements (FCMs) coupled with CFDA/PI and TOTO®-1 staining evidenced that Ca- doubled and Cur-mediated PDI quadrupled the cell damage. Moreover, the enzymatic activity of Lm cells was considerably reduced by Cur-mediated PDI, indicating its superior efficacy. Photosensitization also affected Lm biofilms, but their reduction did not exceed 3.7 log CFU/cm2. Cur-mediated PDI effectively impaired cells on PET and PTFE, while Ca-mediated PDI caused no (TOTO®-1) or only slight (PI) cell damage, sparing the activity of cells. In turn, applying Ca-mediate PDI to Si largely diminished the enzymatic activity in Lm. SS contained 20% dead cells, suggesting that SS itself impacts Lm viability. In addition, the efficacy of Ca-mediated PDI was enhanced on the SS, leading to increased damage to the cells. The weakened viability of Lm on Si and SS could be linked to unfavorable interactions with the surfaces, resulting in a better effect of Ca against Lm. In conclusion, Cur demonstrated excellent photosensitizing properties against Lm in both planktonic and biofilm states. The efficacy of Ca was lower than that of Cur. However, Ca bears potent antibiofilm effects, which vary depending on the surface on which Lm resides. Therefore, this study may help identify more effective plant-based compounds to combat L. monocytogenes in an environmentally sustainable manner.
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Affiliation(s)
- Aleksandra Zimińska
- Department of Food Microbiology, Meat Technology and Chemistry, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Plac Cieszyński 1, 10-726 Olsztyn, Poland (J.G.)
| | - Izabela Lipska
- Department of Food Microbiology, Meat Technology and Chemistry, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Plac Cieszyński 1, 10-726 Olsztyn, Poland (J.G.)
| | - Joanna Gajewska
- Department of Food Microbiology, Meat Technology and Chemistry, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Plac Cieszyński 1, 10-726 Olsztyn, Poland (J.G.)
| | - Anna Draszanowska
- Department of Human Nutrition, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Słoneczna 45F, 10-718 Olsztyn, Poland;
| | - Manuel Simões
- LEPABE—Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal;
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Magdalena A. Olszewska
- Department of Food Microbiology, Meat Technology and Chemistry, The Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Plac Cieszyński 1, 10-726 Olsztyn, Poland (J.G.)
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24
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Spadaccio C, Nenna A, Henkens A, Mastrobuoni S, Jahanyar J, Aphram G, Lemaire G, Vancraeynest D, El Khoury G, De Kerchove L. Predictors of long-term stenosis in bicuspid aortic valve repair. J Thorac Cardiovasc Surg 2024; 167:611-621.e6. [PMID: 35659121 DOI: 10.1016/j.jtcvs.2022.04.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 04/04/2022] [Accepted: 04/17/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVES The use of modern techniques for bicuspid aortic valve repair has been shown to provide safe and durable results against recurrent regurgitation. However, an emerging body of evidence is indicating that aortic stenosis might be an additional late complication of these procedures. To date, the pathogenesis and clinical impact of aortic stenosis after bicuspid aortic valve repair are poorly understood. METHODS A retrospective analysis of 367 patients with bicuspid aortic valve repair was performed to identify predictors of reoperation for stenosis. Bicuspid aortic valve repair was performed using a combination of procedures on the leaflet, annulus, and aortic root. RESULTS During a median follow-up of 8 years, reoperation for stenosis was required in 33 patients (9.0%). Freedom from reoperation for stenosis was 100%, 99.6%, 91.7%, and 74.9% at 1, 5, 10, and 15 years, respectively. The following factors were independently associated with reoperation for aortic stenosis: Leaflet or raphe resection with shaving was a protective factor (hazard ratio, 0.34; 95% confidence interval, 0.16-0.71; P = .004), whereas the use of expanded polytetrafluoroethylene for free-edge running suture (hazard ratio, 2.55; 95% confidence interval, 1.16-5.57; P = .019), supracoronary replacement of the ascending aorta in combination with valve repair (hazard ratio, 5.41; 95% confidence interval, 2.11-13.85; P = .001), and the need for a second aortic crossclamp (hazard ratio, 10.95; 95% confidence interval, 2.80-42.80; P = .001) were associated with increased risk of reoperation for aortic stenosis. CONCLUSIONS While confirming previous findings, our analysis suggests that the inability to restore leaflet mobility and polytetrafluoroethylene for free-edge running suture are risk factors for stenosis. The so-called ascending phenotypes are probably more prone to stenosis. If the first attempt to repair is unsuccessful, the risk of late reoperation for aortic stenosis is high.
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Affiliation(s)
- Cristiano Spadaccio
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium; Department of Cardiac Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Mass
| | - Antonio Nenna
- Department of Cardiovascular Surgery, University Campus Bio-Medico of Rome, Rome, Italy
| | - Arnaud Henkens
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Stefano Mastrobuoni
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Jama Jahanyar
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Gaby Aphram
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Guillaume Lemaire
- Division of Anesthesiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - David Vancraeynest
- Division of Cardiology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Gébrine El Khoury
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Laurent De Kerchove
- Pôle de Recherche Cardiovasculaire, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium; Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium.
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25
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Wang L, Liu R, Zhou Y, Yuan P, Liu X, Gao H. Mass transfer characteristics of chiral pharmaceuticals on membrane used for polar organic chemical integrative sampler. J Environ Sci (China) 2024; 136:670-681. [PMID: 37923475 DOI: 10.1016/j.jes.2023.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 11/07/2023]
Abstract
Passive sampling technology has good application prospects for monitoring trace pollutants in aquatic environments. Further research on the sampling mechanism of this technology is essential to improve the measurement accuracy and extend the application scope of this approach. In this study, adsorption and permeation experiments were performed to investigate the sorption and mass transfer properties of five chiral pharmaceuticals at the enantiomeric level on polyethersulfone (PES) and polytetrafluoroethylene (PTFE) membranes used in a polar organic chemical integrative sampler. Batch adsorption experiments showed that the PES membrane had an adsorption phenomenon for most selected pollutants and an insignificant sorption behavior was observed for all selected pharmaceuticals on the PTFE membrane except for R(S)-fluoxetine. The diffusion coefficients of selected pharmaceuticals onto the PTFE membrane were approximately one order of magnitude higher than those onto the PES membrane. The permeation experiment indicated that under different hydraulic conditions, the change of the relative pollutant concentration through the PTFE membrane for the composite pollutant system was more obvious than that for the single pollutant system, and mass transfer hysteresis exists for both contaminant systems through PES membranes. Using the first-order equation or 3-component model to estimate the overall mass transfer coefficients, the results showed that the overall mass transfer coefficient values of pollutants in the composite pollutant system onto both membranes were higher than those in the single pollutant system. This parameter was mainly influenced by the synergistic effects of the multi-analyte interaction and diminished water boundary layers during the mass transfer process.
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Affiliation(s)
- Liyang Wang
- College of Water Science, Beijing Normal University, Beijing 100018, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
| | - Ruixia Liu
- College of Water Science, Beijing Normal University, Beijing 100018, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China.
| | - Youya Zhou
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
| | - Peng Yuan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
| | - Xiaoling Liu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
| | - Hongjie Gao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China
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Vossen RJ, Fokkema TM, Vahl AC, Balm R. Systematic review and meta-analysis comparing the autogenous vein bypass versus a prosthetic graft for above-the-knee femoropopliteal bypass surgery in patients with intermittent claudication. Vascular 2024; 32:91-101. [PMID: 36066001 DOI: 10.1177/17085381221124701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES According to guidelines, the autogenous saphenous vein (ASV) is the preferred conduit for femoropopliteal bypass surgery in all patients with peripheral artery disease. However, in contrast to patients with critical limb ischemia (CLI), patients with intermittent claudication (IC) only, tend to have milder disease, and thus a prosthetic graft may be as good as a vein conduit. The objective of this study was to compare patency rates of the ASV and a prosthetic graft in femoropopliteal bypass surgery in patients with IC. METHODS A systematic literature search was performed in the PubMed, Embase, and Cochrane databases to identify randomized controlled trials comparing prosthetic graft versus ASV in patients with IC. Articles with a mixed IC and CLI study population were included if more than 50% of the study cohort was treated for IC. Primary analysis was performed on IC patients only. Secondary analysis was performed on the mixed group. The primary endpoint was short- and long-term patency and secondary endpoints were complications, limb salvage, and mortality. RESULTS In total, six studies with 524 patients were included. Only two studies reported solely on patients with IC. All these patients underwent above-the-knee bypasses and average patency rates at one and 5 years were 88% and 76% vs 81% and 68% in the ASV and the PTFE groups, respectively. One and five-year patency was not statistically different between the groups (OR 5.21; 95% CI 0.60-45.36 and OR 2.10; 95% CI 0.88-5.01). In a mixed population of patients with IC and CLI (84% IC patients), 1 year patency was comparable (OR 1.40; 95% CI 0.87-2.25). However, after a follow-up of over 3 years, this mixed group had significantly higher patency rates in favour of the ASV (OR 2.06; 95 % CI 1.30-3.26). Complication and amputation rates were comparable in both groups. CONCLUSIONS Limited data are available for patients receiving above-the-knee femoropopliteal bypass for intermittent claudication. The ASV remains the conduit of choice for femoropopliteal bypass surgery. However, the prosthetic conduit seems a feasible alternative for patients with intermittent claudication in whom the ASV is not present or unsuitable.
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Affiliation(s)
- R J Vossen
- Department of Vascular Surgery, OLVG Amsterdam, Amsterdam, The Netherlands
- Department of Anesthesiology, Erasmus Medical Center, The Netherlands
| | - T M Fokkema
- Department of Vascular Surgery, Länssjukhuset Ryhov, Jönköping, Sweden
| | - A C Vahl
- Department of Vascular Surgery, OLVG Amsterdam, Amsterdam, The Netherlands
- Clinical Epidemiology, OLVG Amsterdam, Amsterdam, The Netherlands
| | - R Balm
- Department of Surgery, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam UMC, Amsterdam, The Netherlands
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Liu Y, Guo L, Yang H, Wang Z. Short-term influence of polytetrafluoroethylene micro/nano-plastics on the inhibition of copper and/or ciprofloxacin on the nitrifying sludge activities based on concentration addition and independent action models. J Environ Manage 2024; 351:119844. [PMID: 38103424 DOI: 10.1016/j.jenvman.2023.119844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/29/2023] [Accepted: 12/05/2023] [Indexed: 12/19/2023]
Abstract
Short-term influence of polytetrafluoroethylene micro/nano-plastics (PTFE-MPs/NPs) on the inhibition of copper (Cu2+) and/or ciprofloxacin (CIP) on the nitrifying sludge activities was explored based on concentration addition (CA) and independent action (IA) models. The half maximal inhibitory concentration (IC50) of Cu2+, CIP, PTFE-MPs (3 μm), and PTFE-NPs (800 nm) on the specific ammonium oxidation rate (SAOR) of nitrifying sludge was 64.57, 51.29, 102.33 and 93.33 mg L-1, respectively, while those on the specific nitrite oxidation rate (SNOR) of nitrifying sludge were 77.62, 32.36, 104.70 and 97.72 mg L-1, respectively. Among the five binary mixtures and two ternary mixtures composed by Cu2+, CIP, and/or PTFE-MPs/NPs, it was found that the two joint inhibitory actions from ternary mixtures on the SAOR and SNOR of the sludge showed time-dependent characteristics by analyzing of CA and IA models, while the five combined inhibitory effects from different binary mixtures did not all have time-dependent features. The two joint inhibition actions from diverse ternary mixtures on the SAOR at the exposure time of 60 min and on the SNOR at 90 min showed always concentration-dependent features, while the combined inhibitions with concentration-dependent characteristics had never been observed in the binary Cu2+ and PTFE-NPs mixtures at different exposure time. The Cu2+, CIP, and PTFE-MPs mixtures (or Cu2+, CIP, and PTFE-NPs mixtures) had synergistic actions on the SAOR at 90 min and antagonistic effects on the SNOR at 60 min based on CA and IA models, and these combined inhibitions did not exhibit concentration-dependent characteristics. In contrast, the joint inhibitory effects (on the SAOR and SNOR) with concentration-dependent features were found in the binary mixtures of CIP and PTFE-MPs at different exposure time, and the join inhibition changed from synergism to antagonism as the increasing concentration of mixed CIP and PTFE-MPs. This study provides novel perspectives for understanding the combined influence of plastic particles with different sizes, antibiotics, and heavy metals on the biological wastewater treatment process.
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Affiliation(s)
- Yang Liu
- College of Environment Science, Liaoning University, Shenyang, China
| | - Liming Guo
- College of Environment Science, Liaoning University, Shenyang, China
| | - Huan Yang
- College of Environment Science, Liaoning University, Shenyang, China
| | - Zichao Wang
- College of Environment Science, Liaoning University, Shenyang, China.
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Fernandes GVO, Castro F, Pereira RM, Teixeira W, Gehrke S, Joly JC, Blanco Carrion J, Fernandes JCH. Critical-size defects reconstruction with four different bone grafts associated with e-PTFE membrane: A histomorphometric experimental in vivo study. Clin Oral Implants Res 2024; 35:167-178. [PMID: 37987205 DOI: 10.1111/clr.14210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 10/20/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVES The goal of this study was to assess the newly formed bone and the remnant biomaterial by comparing four different bone grafts used to treat critical-size defects, associated or not with the non-resorbable membrane. MATERIALS AND METHODS Two calvaria critical-size bone defects were created in 50 male Wistar rats. They were divided into blood (G1), autogenous (G2), bioglass (G3), hydroxyapatite (G4), and xenograft (G5) groups, associated or not with e-PTFE. The experimental periods were 15 and 45 days. Sections were prepared for histomorphometric assessment. All data were analyzed by the mixed-effects model with multiple comparisons (significance level, p < .05). RESULTS A similar level of new bone was observed for all groups, associated with a high level of vascularization. G1 and G2 ensured sovereignty over the greater quantity of new bone. A non-significant result was reported comparing groups with and without membranes. No significant result was found between the experimental synthetic biomaterials (G3 and G4). G5L achieved 22.0% of new bone after 45 days (p > .05). All groups had a stable volume of biomaterial kept in the short term (p > .05). G2 was the best material for new bone formation and final volume of biomaterial, followed by G4 < G5 < G3. Thus, it is possible that G4 had a better degradation profile among the experimental groups. CONCLUSIONS The best results were found in the autogenous group, with higher resorption and integration; non-significative new bone was found among the experimental groups; and the regeneration of critical bone defects using an e-PTFE barrier did not present significant results on new bone formation.
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Affiliation(s)
- Gustavo Vicentis Oliveira Fernandes
- Periodontics and Oral Medicine Department, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
- A. T. Still University, St. Louis, Missouri, USA
| | - Filipe Castro
- FP-I3ID, FCS, Universidade Fernando Pessoa, Porto, Portugal
| | - Rafael Martins Pereira
- Periodontics and Oral Medicine Department, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Wendel Teixeira
- Department of Biologic and Materials Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Sérgio Gehrke
- Department of Research, Bioface/PgO/UCAM, Montevideo, Uruguay
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Discussion to: Expanded polytetrafluoroethylene conduits with curved and handsewn bileaflet designs for right ventricular outflow tract reconstruction. J Thorac Cardiovasc Surg 2023; 167:450-1. [PMID: 37632475 DOI: 10.1016/j.jtcvs.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Indexed: 08/28/2023]
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Thanos A, Todorich B. A Novel Surgical Technique for Transscleral Gore-Tex Suture-Assisted Rescue of Dislocated CZ70BD Intraocular Lenses Using 27-Gauge Instrumentation. Retina 2024; 44:360-363. [PMID: 37972943 DOI: 10.1097/iae.0000000000003993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 10/29/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE To report a novel technique for refixation of dislocated CZ70BD intraocular lens (IOL). METHODS Vitrectomy trocars are placed along the horizontal meridian 5 mm apart. A CV-8 Gore-Tex suture is introduced through a bare sclerotomy into the midvitreous cavity. Under chandelier illumination, a 27 G broad platform forceps is threaded through the eyelet of the dislocated CZ70BD IOL. Using another pair of intraocular forceps, the free intraocular end of the Gore-Tex suture is fed to the broad platform forceps and externalized, thus repositioning the IOL. Particular attention is drawn to pass the suture in an over and under configuration to avoid IOL tilt. An identical procedure is repeated for the other eyelet if the IOL is completely dislocated. The 23 gauge or 25 gauge instruments should not be used for this technique because they do not fit loosely through the eyelets of the IOL. RESULTS Three eyes were successfully operated on using this technique with at least 6 months of follow-up. There was significant improvement in best-corrected visual acuity after the operation. Postoperative IOL centration and alignment were satisfactory. CONCLUSION The described surgical technique is effective for transscleral Gore-Tex-assisted refixation of dislocated CZ70BD IOL.
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Wang G, Wei M, Zhen Y, Li D, An Y. Three-Dimensional Morphological Study on the Effectiveness of Expanded Polytetrafluoroethylene Prosthesis in the Paranasal Augmentation. Aesthetic Plast Surg 2024; 48:398-406. [PMID: 38133836 DOI: 10.1007/s00266-023-03755-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/07/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The paranasal depression is a common facial feature of Oriental populations. One of the most wildly used method to improve it was paranasal augmentation using expanded polytetrafluoroethylene (ePTFE). The effectiveness of it should be tested by three-dimensional morphological measurements. METHODS Patients who underwent paranasal augmentation using ePTFE between January 2017 and December 2022 were recruited in the study. The preoperative and postoperative clinical variables and three-dimensional measurement of patients were also collected. The satisfaction outcome were assessed. RESULTS By establishing a coordinate system based on the Frankfurt plane, 16 landmarks including nasal alar crest, subnasal point, upper lip, pogonion, glabella, sub-cheek, orbitale, tragion in left and right side of faces were marked. Five segments, 4 ratios, and 3 angles were measured based on it. The significant increase of segments, ratios, and angles indicated that paranasal augmentation could increase the protrusion of paranasal area, both in absolute value and relative proportion. The significant decrease of other data indicated that the protrusion difference between paranasal base and upper lip, forehead, and chin, respectively, were shortened after surgery. The average size of implant was 6.54 ± 1.02 mm, and the average increase of paranasal height was 4.38 ± 1.04 mm postoperatively. This indicates that two-thirds of its height will ultimately be reflected effectively in the sagittal elevation of the paranasal base. CONCLUSIONS Paranasal augmentation using ePTFE could effectively increase paranasal height and improve subunits relationships, and the ePTFE prosthesis should be designed and carve considering the 1/3 loss of height after implantation. LEVEL OF EVIDENCE III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Guanhuier Wang
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Muqian Wei
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yonghuan Zhen
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Dong Li
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yang An
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
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Na CY. Surgical Outcome of Postinfarction Left Ventricular Free Wall Rupture. Tex Heart Inst J 2024; 51:238213. [PMID: 38291908 DOI: 10.14503/thij-23-8213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
BACKGROUND Left ventricular free wall rupture (LVFWR) is a rare and fatal complication after acute myocardial infarction. Early recognition and aggressive treatment are recommended. METHODS Between August 1999 and February 2023, 11 patients aged between 64 and 79 years developed LVFWR after acute myocardial infarction (mean interval, 3.5 days). Three patients had active bleeding (blowout-type LVFWR), and the other 8 patients experienced the oozing or sealed state. Eight patients were treated using a sutureless technique with Teflon felt and glue, 2 patients were treated using the primary suture closure technique, and 1 was treated using both the primary suture and the sutureless technique with Teflon felt and glue. RESULTS One patient died in the operating room as a result of bleeding. Cardiovascular stability and hemostasis were achieved in the other 10 patients. There were 3 early deaths (all 3 cases as a result of area bleeding; 1 was treated with primary suture, 2 with sutureless glue). Three patients received percutaneous coronary intervention before discharge. All 8 remaining patients survived and were discharged. Three patients were lost to follow-up. The follow-up period ranged from 2 to 97 months, with 4 patients exhibiting New York Heart Association class I symptoms and 1 exhibiting New York Heart Association class II symptoms. CONCLUSION Optimal surgical treatment for postinfarction LVFWR remains controversial. The sutureless technique may be a promising strategy for treating postinfarction LVFWR.
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Affiliation(s)
- Chan-Young Na
- Department of Thoracic and Cardiovascular Surgery, Hallym University Dongtan Sacred Heart Hospital, Gyeonggi-do, South Korea
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Wang Y, Wei P, Shen Z, Wang C, Ding J, Zhang W, Jin X, Vecitis CD, Gao G. O 2-Independent H 2O 2 Production via Water-Polymer Contact Electrification. Environ Sci Technol 2024; 58:925-934. [PMID: 38117535 DOI: 10.1021/acs.est.3c07674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Hydrogen peroxide (H2O2), as a critical green chemical, has received immense attention in energy and environmental fields. The ability to produce H2O2 in earth-abundant water without relying on low solubility oxygen would be a sustainable and potentially economic process, applicable even to anaerobic microenvironments, such as groundwater treatment. However, the direct water to H2O2 process is currently hindered by low selectivity and low production rates. Herein, we report that poly(tetrafluoroethylene) (PTFE), a commonly used inert polymer, can act as an efficient triboelectric catalyst for H2O2 generation. For example, a high H2O2 production rate of 24.8 mmol gcat-1 h-1 at a dosage of 0.01 g/L PTFE was achieved under the condition of pure water, ambient atmosphere, and no sacrificial agents, which exceeds the performance of state-of-the-art aqueous H2O2 powder catalysts. Electron spin resonance and isotope experiments provide strong evidence that water-PTFE tribocatalysis can directly oxidize water to produce H2O2 under both anaerobic and aerobic conditions, albeit with different synthetic pathways. This study demonstrates a potential strategy for green and effective tribocatalytic H2O2 production that may be particularly useful toward environmental applications.
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Affiliation(s)
- Yanfeng Wang
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Peiyun Wei
- School of Life and Environmental Sciences, Shaoxing University, Huancheng Road 508, Shaoxing 312000, China
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Zihan Shen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Chao Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jie Ding
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Wenkai Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Xin Jin
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Chad D Vecitis
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
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Jain R. Effects of Electron Beam Sterilization on Polytetrafluoroethylene: Design of Experiments Study. Biomed Instrum Technol 2024; 57:117-121. [PMID: 38170938 PMCID: PMC10764064 DOI: 10.2345/0899-8205-57.4.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Polytetrafluoroethylene (PTFE) is a common polymer used in medical devices due to its exceptional properties (e.g., biocompatibility, inertness, chemical stability, low coefficient of friction). However, as a result of molecular weight reduction caused by the process of chain scission, it is known to be susceptible to radiation exposure and can rapidly lose strength and integrity. In this design of experiments study, the goal was to determine whether an operating window of conditions exist for electron beam (E-beam) radiation sterilization in which the degradation of PTFE is acceptably low. PTFE was tested for yield stress after exposure to radiation under different parameters (total dose [15-60 kGy], packaging atmosphere [air/nitrogen], and poststerilization accelerated aging [real-time equivalent of 1 and 3 years]). The results showed that total dose and packaging atmosphere were significant factors and indicated that the use of modified atmosphere packaging (vacuum sealing with nitrogen gas purge) can be a useful approach in increasing the stability of PTFE toward E-beam sterilization.
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Chen J, Chiu F, Chang S, Cheng H, Huang P, Wu C, Wang Y, Hwang J, Tsai C. Pattern of Endothelialization in Left Atrial Appendage Occluder by Optic Coherence Tomography: A Pilot Study. J Am Heart Assoc 2024; 13:e030080. [PMID: 38156658 PMCID: PMC10863799 DOI: 10.1161/jaha.123.030080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/03/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Implantation of the left atrial appendage occluder (LAAO) has been proven to prevent stroke effectively in patients with atrial fibrillation who cannot tolerate anticoagulants. Incomplete endothelization of LAAO may cause device-related thrombus, and currently no good image modality exists to clearly see LAAO endothelialization. We aimed to use coronary optic coherence tomography (OCT) to visualize LAAO endothelialization. METHODS AND RESULTS We enrolled 14 patients (72.8±9.4 years old) undergoing pulmonary vein isolation with a preexisting LAAO implanted more than 1 year ago (5 Watchman and 9 Amulet). After pulmonary vein isolation, we did OCT via steerable sheath and coronary guiding catheter to adjust OCT probe location and injected contrast medium to visualize the LAAO surface. In vitro testing was also performed to see the bare occluder. In vitro OCT showed the surface of the bare device as an interrupted granule pattern, which included the Watchman surface polytetrafluoroethylene membrane string, Amulet disc metal strut, and inner polytetrafluoroethylene membrane string. In the implanted Watchman, OCT showed endothelialization as a smooth surface layer with noninterrupted coarser granules. In the implanted Amulet, OCT showed endothelialization as thin (early) or thick (late) endothelialization layer covering struts with OCT shadows. Among patients with Watchman, 2 showed no, 2 early, and 1 complete endothelialization. Among patients with Amulet, 2 showed no, 3 early, and 4 late endothelialization. CONCLUSIONS We demonstrated the feasibility of OCT to visualize LAAO endothelization with high resolution. Further studies are needed to determine antithrombotic regimens if incomplete endothelization is detected. A new OCT catheter may be designed specifically for LAAO.
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Affiliation(s)
- Jien‐Jiun Chen
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and Hospital Yun‐Ling BranchDou‐Liu CityTaiwan
| | - Fu‐Chun Chiu
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and Hospital Yun‐Ling BranchDou‐Liu CityTaiwan
| | - Sheng‐Nan Chang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and Hospital Yun‐Ling BranchDou‐Liu CityTaiwan
| | - Hsiao‐Liang Cheng
- Department of AnesthesiaNational Taiwan University HospitalTaipeiTaiwan
| | - Pang‐Shuo Huang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and Hospital Yun‐Ling BranchDou‐Liu CityTaiwan
| | - Cho‐Kai Wu
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and HospitalTaipeiTaiwan
| | - Yi‐Chih Wang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and HospitalTaipeiTaiwan
| | - Juey‐Jen Hwang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and HospitalTaipeiTaiwan
| | - Chia‐Ti Tsai
- Division of Cardiology, Department of Internal MedicineNational Taiwan University College of Medicine and HospitalTaipeiTaiwan
- Graduate Institute of Clinical MedicineNational Taiwan University College of Medicine, Cardiovascular Center, National Taiwan University HospitalTaipeiTaiwan
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Soares TR, Cabral G, Costa T, Tiago J, Gimenez J, Duarte A, Cunha E Sá D. Heparin-Bonded Expanded Polytetrafluoroethylene Is a Solution for Infrapopliteal Revascularization in the Absence of an Adequate Autologous Vein Graft. Ann Vasc Surg 2024; 98:201-209. [PMID: 37355019 DOI: 10.1016/j.avsg.2023.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 06/26/2023]
Abstract
BACKGROUND To analyze the outcomes of heparin-bonded expanded polytetrafluoroethylene (HePTFE) graft as an alternative conduit in infrapopliteal revascularization of chronic limb-threatening ischemia (CLTI) in the absence of an autologous vein conduit. METHODS A single-center retrospective analysis of patients with CLTI submitted to infrapopliteal bypasses with autologous vein graft (VEIN group) or HePTFE graft (HePTFE group) was implemented. Primary end points were freedom from CLTI at 12 months and recurrence of CLTI at 3 years. Secondary end points included freedom from major amputation, amputation-free survival (AFS), survival, and primary (PP) and secondary patency (SP) rates at 3 years of follow-up. RESULTS A total of 348 limbs submitted to infrapopliteal bypasses, 214 with venous graft and 134 with HePTFE graft, were followed-up for a median of 25 months. Most patients of the HePTFE group were male (69%), with a median age of 76 years (interquartile range [IQR] 15). Fifty-nine percent of the limbs of the HePTFE group had Wound grade ≥2, being 46% of them infected. Eighty-eight percent were GLASS stage III. Freedom from CLTI was not significantly different between HePTFE and VEIN groups (75% vs. 84%, adjusted hazard ratio [aHR] 0.88, confidence interval [CI] 0.66-1.18, P = 0.401). Recurrence of CLTI was higher in the HePTFE group (42% vs.18% at 3 years; aHR 2.82, CI 1.59-5.00, P < 0.001). The VEIN group achieved higher rates of freedom from major amputation (87% vs.69% at 3 years; aHR 2.21, CI 1.31-3.75, P = 0.003) and AFS (59% vs. 37% at 3 years; aHR 1.39, CI 1.02-1.88, P = 0.036), but no significance in survival (aHR 1.10, CI 0.72-1.66, P = 0.667). Patency rates were inferior in the HePTFE group, with 2-year PP and SP rates of 52% vs. 74%, and 76% vs. 90%, respectively (PP: aHR 1.70, CI 1.11-2.59, P = 0.014; SP: aHR 2.51, CI 1.42-4.42, P = 0.001). CONCLUSIONS Infrapopliteal bypass with autologous vein graft is the gold standard to treat CLTI limbs. HePTFE graft should be regarded as an alternative for complex infrapopliteal revascularization when lacking an autologous vein conduct.
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Affiliation(s)
- Tony R Soares
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - Gonçalo Cabral
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - Tiago Costa
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - José Tiago
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - José Gimenez
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - Armanda Duarte
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal
| | - Diogo Cunha E Sá
- Department of Angiology and Vascular Surgery, Hospital Beatriz Ângelo, Loures, Portugal.
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Wang K, Chen M, Yu B, Guo Z. Comparison of Clinical Results of Crescent-Shaped Expanded Polytetrafluoroethylene (e-PTFE) and Granulated Rib Cartilage for Filling The Nasal Base to correct Midface Depressions. Altern Ther Health Med 2024; 30:434-440. [PMID: 37820674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Objective The center of the face plays an important role in the fullness of our facial contours, however, sunken center of the face is more common in Asians than in Europeans and Americans. Expanded polytetrafluoroethylene (PTFE) and rib cartilage are commonly used to fill the nasal base to improve the hollowing of the center of the face. This study aimed to compare the efficacy and safety of crescent-shaped expanded polytetrafluoroethylene (e-PTFE) with granulated rib cartilage for nasal base filling to treat midface depressions. Methods Fifty-one patients with mild to moderate midface depression and normal occlusion admitted to our department from June 2017 to August 2020 were selected. Comprehensive rhinoplasty was performed, which included nasal base filling using crescentic e-PTFE or granulated rib cartilage. They are all women, with an average age of 27.4 years. The e-PTFE group (group A) had 27 cases, while the granulated rib cartilage group (group B) had 24. Changes in two face parameters, the wing ear line and facial convexity, were measured and recorded based on preoperative and postoperative photographs of the patients and using 3D imaging technology. Postoperative complications and satisfaction were assessed by questionnaires to compare the two surgical approaches' differences, advantages, and disadvantages. Results Postoperative midface depression improved significantly in 51 patients. Most of the patients who underwent both procedures showed significant improvement in the wing ear line and facial convexity. The 3D imaging has also helped us to more objectively assess the changes in midface concavity. Some patients experienced acute discomfort, such as foreign body sensation and stiffness in the surgical area, for the first three months after nasal base filler surgery. Still, these symptoms resolved on their own within six months. Most patients (92.6% in group A and 91.6% in group B) felt that they had natural facial expressions and were satisfied with the filler results. Conclusion The use of crescentic e-PTFE and granular rib cartilage to fill the nasal base is easy to operate and has a quick postoperative recovery, allowing for good postoperative results. However, after some of the granular rib cartilage filling treatments, the height of the nasal base was lowered, which may be connected to its limited structural support, ease of displacement, and resorption. Crescentic e-PTFE is superior to granular rib cartilage in terms of both morphology and mechanical support. The crescentic e-PTFE filling method provides rapid postoperative recovery and good shape maintenance, but local stiffness is more pronounced than in the granular rib cartilage group. This may help the plastic surgeon's choice of surgical procedure.
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Kuijpers M, Holewijn S, Blankensteijn JD, Reijnen MMPJ. Prevalence of type II endoleak after elective endovascular aneurysm repair with polytetrafluoroethylene- or polyester-based endografts. J Vasc Surg 2024; 79:24-33. [PMID: 37734570 DOI: 10.1016/j.jvs.2023.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/23/2023]
Abstract
OBJECTIVE Type II endoleak is the most frequent complication after endovascular abdominal aneurysm repair. Polytetrafluoroethylene and polyester (PE) are the two most commonly used graft materials in endovascular aneurysm repair (EVAR) devices. Biological properties of the material might influence the appearance and persistence of type II endoleak (T2EL). Therefore, the aim of this study was to evaluate potential differences in the prevalence of T2EL after EVAR between polytetrafluoroethylene (PTFE) and PE endografts in patients electively treated for an infrarenal abdominal aortic aneurysm. METHODS A single-center, retrospective, observational study was conducted between January 2011 and January 2022. Preoperative, procedural, and follow-up data were derived from electronic health records. Imaging included computed tomography scans, and/or duplex ultrasound examination. The primary end point was the prevalence of T2EL diagnosed within 1 year after EVAR. Secondary end points included the prevalence of T2EL throughout follow-up, early (≤30 days) and late (>30 days) T2EL, the rate of T2EL disappearance during the follow-up period, the prevalence of type I and III endoleak, and T2EL-related reinterventions. RESULTS Follow-up was available for 394 patients, 245 in the PE and 149 in the PTFE group. The prevalence of T2EL diagnosed within 1 year after endovascular repair was 11.8% in the PE group and 21.5% in the PTFE group (P = .010). There was no significant difference in early (≤30 days) and late (>30 days) T2EL between groups (P = .270 and P = .311). There was no difference in the freedom from endoleak type II reinterventions between groups (P = .877). CONCLUSIONS The prevalence of T2EL after elective EVAR is significantly higher with the use of PTFE-based endografts compared with PE-based endografts. This difference is mostly based on T2EL diagnosed after 30 days of follow-up.
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Affiliation(s)
- Maud Kuijpers
- Department of Surgery, Rijnstate, Arnhem, the Netherlands
| | | | | | - Michel M P J Reijnen
- Department of Surgery, Rijnstate, Arnhem, the Netherlands; Multi-Modality Medical Imaging Group, TechMed Center, University of Twente, Enschede, the Netherlands.
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Analatos A, Håkanson BS, Ansorge C, Lindblad M, Lundell L, Thorell A. Hiatal Hernia Repair With Tension-Free Mesh or Crural Sutures Alone in Antireflux Surgery: A 13-Year Follow-Up of a Randomized Clinical Trial. JAMA Surg 2024; 159:11-18. [PMID: 37819652 PMCID: PMC10568445 DOI: 10.1001/jamasurg.2023.4976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/26/2023] [Indexed: 10/13/2023]
Abstract
Importance Antireflux surgery is an effective treatment of gastroesophageal reflux disease (GERD), but the durability of concomitant hiatal hernia repair remains challenging. Previous research reported that the use of a mesh-reinforced, tension-free technique was associated with more dysphagia for solid foods after 3 years without reducing hiatal hernia recurrence rates compared with crural sutures alone, but the long-term effects of this technique have not been assessed. Objective To assess the long-term anatomical and functional outcomes of using a mesh for hiatal hernia repair in patients with GERD. Design, Setting, and Participants A double-blind, randomized clinical trial was performed at a single center (Ersta Hospital, Stockholm, Sweden) from January 11, 2006, to December 1, 2010. A total of 159 patients were recruited and randomly assigned. Data for the current analysis were collected from September 1, 2021, to March 31, 2022. All analyses were conducted with the intention-to-treat population. Interventions Closure of the diaphragmatic hiatus with crural sutures alone vs a tension-free technique using a nonabsorbable polytetrafluoroethylene mesh (Bard CruraSoft). Main Outcomes and Measures The primary outcome was radiologically verified recurrent hiatal hernia after more than 10 years. Secondary outcomes were dysphagia scores (ranging from 1 to 4, with 1 indicating no episodes of dysphagia and 4 indicating more than 3 episodes of dysphagia per day) for solid and liquid foods, generic 36-Item Short Form Health Survey and disease-specific Gastrointestinal Symptom Rating Scale symptom assessment scores, proton pump inhibitor consumption, and reoperation rates. Intergroup comparisons of parametric data were performed using t tests; for nonparametric data, Mann-Whitney U, χ2, or Fisher exact tests were used. For intragroup comparisons vs the baseline at follow-up times, the Friedman test was used, and post hoc analysis was performed using Wilcoxon matched pairs. Results Of 145 available patients, follow-up data were obtained from 103 (response rate 71%; mean [SD] age at follow-up, 65 [11.3] years; 55 [53%] female), with 53 initially randomly assigned to mesh reinforcement, and 50 to crural suture alone. The mean (SD) follow-up time was 13 (1.1) years. The verified radiologic hiatal hernia recurrence rates were 11 of 29 (38%) in the mesh group vs 11 of 35 (31%) in the suture group (P = .61). However, 13 years postoperatively, mean (SD) dysphagia scores for solids remained significantly higher in the mesh group (mean [SD], 1.9 [0.7] vs 1.6 [0.9]; P = .01). Conclusions and Relevance Findings from this long-term follow-up of a randomized clinical trial suggest that tension-free crural repair with nonabsorbable mesh does not reduce the incidence of hiatal hernia recurrence 13 years postoperatively. This finding combined with maintained higher dysphagia scores does not support the routine use of tension-free polytetrafluoroethylene mesh closure in laparoscopic hiatal hernia repair for treatment of GERD. Trial Registration ClinicalTrials.gov Identifier: NCT05069493.
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Affiliation(s)
- Apostolos Analatos
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Department of Surgery, Nyköping Hospital, Nyköping, Sweden
- Centre for Clinical Research Sörmland, Uppsala University, Sweden
| | - Bengt S. Håkanson
- Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
- Department of Surgery and Anaesthesiology, Ersta Hospital, Stockholm, Sweden
| | - Christoph Ansorge
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Department of Surgery, Nyköping Hospital, Nyköping, Sweden
| | - Mats Lindblad
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Department of Upper Abdominal Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Lundell
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Department of Surgery, Odense University Hospital, Odense, Denmark
| | - Anders Thorell
- Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden
- Department of Surgery and Anaesthesiology, Ersta Hospital, Stockholm, Sweden
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Egea-Corbacho A, Martín-García AP, Franco AA, Albendín G, Arellano JM, Rodríguez-Barroso R, Coello MD, Quiroga JM, Cabello JF, Iglesias Prado I, Malta EJ. Microplastic in industrial aquaculture: Occurrence in the aquatic environment, feed and organisms (Dicentrarchus labrax). Sci Total Environ 2023; 904:166774. [PMID: 37660804 DOI: 10.1016/j.scitotenv.2023.166774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/24/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
The increasing use of plastics and the growing concern about their impact on the environment and living beings makes it necessary to study how microplastics (MP) affect aquaculture systems. In order to gain an in-depth understanding of these systems, this study covers the water intake, the purification treatment at the inlet, the water in the culture tanks, as well as the feed used in the feeding and the organism itself. For this purpose, five samples were taken, both in the water line, feed and sea bass during the weeks of the experiment. It is shown that the available purification systems reduce the amount of MP entering from the receiving environment. However, new MP are observed in the sea bass tank, which may be due mainly to those added through the feed and found in the feed, as well as in the piping and other materials used in current aquaculture systems (PTFE, PA, among others). If focusing on the feed that can reach the consumer, in the case of this study, carried out with sea bass, some types of MP (PE, PTFE, PS and PA) were found in 4 head samples and 4 skin/muscle samples. Although inlet water purification systems manage to reduce a high percentage of MPs in the system, it is observed that there are other access routes that should be considered and reduced in aquaculture facilities to prevent them from reaching the human consumer.
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Affiliation(s)
- Agata Egea-Corbacho
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Ana Pilar Martín-García
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain.
| | - Ana A Franco
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Gemma Albendín
- Toxicology Department, University Institute of Marine Research (INMAR), International Campus of Excellence of the Sea (CEI MAR), Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cadiz, Spain
| | - Juana Mª Arellano
- Toxicology Department, University Institute of Marine Research (INMAR), International Campus of Excellence of the Sea (CEI MAR), Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cadiz, Spain.
| | - Rocío Rodríguez-Barroso
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Mª Dolores Coello
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - José Mª Quiroga
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Jose F Cabello
- Aquaculture Technology Centre of Andalusia (CTAQUA), 11500 El Puerto de santa María, Spain
| | - Iria Iglesias Prado
- Aquaculture Technology Centre of Andalusia (CTAQUA), 11500 El Puerto de santa María, Spain
| | - Erik-Jan Malta
- Aquaculture Technology Centre of Andalusia (CTAQUA), 11500 El Puerto de santa María, Spain
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Chokesuwattanaskul R, Vithessonthi K, Benjacholamas V, Lertsapcharoen P. Permanent pacemaker implantation in post one-and-a-half ventricle repair with tricuspid valve replacement in Ebstein anomaly: An innovative technique. Pacing Clin Electrophysiol 2023; 46:1604-1608. [PMID: 37120827 DOI: 10.1111/pace.14705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/25/2023] [Accepted: 04/09/2023] [Indexed: 05/02/2023]
Abstract
INTRODUCTION Transvenous pacemaker implantation in patients post bidirectional Glenn anastomosis in one-and-a-half ventricle repair is usually not feasible. However, with a modified surgical technique for Glenn anastomosis and a combined interventional and electrophysiologic approach, the transvenous pacemaker was successfully implanted. FINDINGS AND CONCLUSIONS We reported a novel technique of pacemaker implantation in a 27-year-old woman, underlying Ebstein anomaly of the tricuspid valve, who developed intermittent complete atrioventricular block at 5 years after surgical repair. The patient had a tricuspid valve replacement and a novel modified bidirectional Glenn anastomosis for one-and-a-half ventricle repair. The Glenn circuit was conducted by opening a window between the posterior wall of the superior vena cava (SVC) and the anterior wall of the right pulmonary artery (RPA), combined with putting a Goretex membrane in the SVC below the SVC-RPA window without disconnecting the SVC from the right atrium. The transvenous pacemaker was implanted by perforating the Goretex membrane, then passing the leads from the axillary vein through the perforated membrane and placing them in the coronary sinus and right atrium.
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Affiliation(s)
- Ronpichai Chokesuwattanaskul
- Division of Cardiovascular Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Cardiac Center, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Kanyalak Vithessonthi
- Division of Pediatric Cardiology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Pediatric Cardiac Surgery Foundation, Bangkok, Thailand
| | - Vichai Benjacholamas
- Cardiac Center, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
- Division of Cardiothoracic Surgery, Department of Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Pornthep Lertsapcharoen
- Cardiac Center, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
- Division of Pediatric Cardiology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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Porat Rein A, Abulafia A, Assayag E, Goldberg M, Zadok D. Comprehensive approach for capsular bag fixation in subluxated crystalline lens: preserving the anterior/posterior anatomical segment barrier. J Cataract Refract Surg 2023; 49:1236-1241. [PMID: 37616179 DOI: 10.1097/j.jcrs.0000000000001293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023]
Abstract
PURPOSE To report the intraoperative performance and postoperative outcomes of crystalline lens removal and in-the-bag intraocular lens (IOL) implantation with scleral-bag fixation by means of capsular tension segments (CTSs) and a capsular tension ring (CTR) in patients with a subluxated lens. SETTING Department of Ophthalmology, Shaare-Zedek Medical Center, Jerusalem, Israel. DESIGN Retrospective, consecutive case series. METHODS This study included patients with subluxated crystalline lens who underwent lensectomy or cataract extraction using an anterior chamber maintainer (ACM), a CTR, transscleral capsular-bag fixation by polytetrafluoroethylene suture with 2 CTSs, and in-the-bag IOL implantation. Outcome measures included intra- and postoperative complications, corrected distance visual acuity (CDVA), target and postoperative refraction, and IOL tilt. RESULTS 17 eyes (9 patients) were included, with a mean follow-up of 22.06 ± 14.88 months. There was a significant improvement in mean logMAR CDVA ( P < .001), with 15 eyes (88.24%) achieving a Snellen CDVA of 20/30 or better and all eyes achieving 20/40 or better. The mean refractive spherical-equivalent prediction error was 0.07 ± 1.10 diopters (D), with 10 (58.82%) and 15 (88.24%) of eyes within ±0.50 D and 1.00 D, respectively, from the intended refraction. The mean horizontal and vertical tilts were 1.9 ± 2.6 degrees and 2.6 ± 2.1 degrees, respectively. No complications were observed except for 1 case of an intraoperative posterior-capsular tear. CONCLUSIONS A comprehensive surgical approach for scleral-bag fixation that combines the use of an ACM, CTR, polytetrafluoroethylene sutures, 2 CTSs with in-the-bag IOL implantation, offers an effective strategy for achieving favorable visual outcomes and a low incidence of complications in patients with subluxated crystalline lenses.
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Affiliation(s)
- Adi Porat Rein
- From the Department of Ophthalmology, Shaare Zedek Medical Center, affiliated to the Hebrew University, Hadassah School of Medicine Jerusalem, Jerusalem, Israel
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Zhou S, Jiang T, Zhong Y, Yu Z, Duan H, Li D, Xu L, Yuan J, Wei M. Efficacy and Safety of Expanded Polytetrafluoroethylene Implantation in the Correction of Long-Term Posttraumatic Enophthalmos. Plast Reconstr Surg 2023; 152:1313-1318. [PMID: 36940154 DOI: 10.1097/prs.0000000000010440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
SUMMARY Long-term enophthalmos is a common orbital fracture sequela. Various autografts and alloplastic materials have been studied in posttraumatic enophthalmos repair. However, expanded polytetrafluoroethylene (ePTFE) implantation in late enophthalmos repair has rarely been reported. The authors report novel use of ePTFE for late posttraumatic enophthalmos repair. This retrospective study included patients with posttraumatic long-term enophthalmos who underwent hand-carved ePTFE intraorbital implantation for enophthalmos correction. Computed tomography data were collected preoperatively and at follow-up. The volume of ePTFE, the degree of proptosis (DP), and enophthalmos were measured. Postoperative and preoperative DP and enophthalmos were compared using the paired t test. The correlation between ePTFE volume and DP increment was established using linear regression. Complications were identified by chart review. From 2014 to 2021, 32 patients were included, with a mean follow-up of 19.59 months. The mean volume of implanted ePTFE was 2.39 ± 0.89 mL. After surgery, the DP of the affected globe improved significantly, from 12.75 ± 2.12 mm to 15.06 ± 2.50 mm ( P < 0.0001). A significant linear correlation was found between ePTFE volume and DP increment ( P < 0.0001). Enophthalmos was substantially ameliorated from 3.35 ± 1.89 mm to 1.09 ± 2.07 mm ( P < 0.0001). Twenty-five patients (78.23%) had postoperative enophthalmos of less than 2 mm. Infection and implant dislocation were not observed. The authors concluded that ePTFE intraorbital implantation exhibited long-term efficacy and safety for late posttraumatic enophthalmos repair and represents an effective and predictable alternative. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, IV.
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Affiliation(s)
- Sizheng Zhou
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Taoran Jiang
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Yehong Zhong
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
- Department of Maxillofacial Surgery and Digital Plastic Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College
| | - Zheyuan Yu
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Huichuan Duan
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Dong Li
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Liang Xu
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Jie Yuan
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
| | - Min Wei
- From the Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine
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Bokobza A, Nicot R, Raoul G, Afota F, Choukroun J, Savoldelli C. Management of postoperative outcomes of polytetrafluoroethylene membranes in alveolar ridge reconstruction: a systematic review. J Stomatol Oral Maxillofac Surg 2023; 124:101641. [PMID: 37739223 DOI: 10.1016/j.jormas.2023.101641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
Guided bone regeneration (GBR) is a validated technique with satisfactory outcomes during 30 years of follow-up. The use of polytetrafluoroethylene (PTFE) membrane for vertical augmentation has been studied extensively. However, studies have reported exposure rates of up to 31%, there is no consensus on the management of postoperative exposure. The objective of this study was to propose a management approach for postoperative exposure of polytetrafluoroethylene (PTFE) membranes in alveolar ridge reconstruction. MATERIAL AND METHOD An electronic search in PubMed Central's and additional electronic databases was performed. The search strategy was limited to human studies, full-text English or French articles published from 1990 until april 2023. The extracted data included defect location, membrane type, biomaterials, time to postoperative exposure, and Fontana classification stage. Protocol bias assessment was performed using an adaptation of the QUADAS-2 tool. This review has been registered on PROSPERO (ID: CRD42023445497). RESULTS A total of 43 articles were found to be eligible, and 11 of these met the predefined inclusion and exclusion criteria. Based on the results of this systematic review, an algorithm for the management of PTFE membrane exposure is proposed. CONCLUSION Postoperative membrane exposure is not a determining factor for the success of bone grafting. In cases with postoperative complications, the majority of cases still achieved adequate implant-prosthetic rehabilitation. Lastly, this series of 11 articles was insufficient to draw conclusions regarding good practice recommendations. A larger series is required to validate the specific management approaches.
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Affiliation(s)
- Allan Bokobza
- Univ. Lille, CHU Lille, Department of Oral and Maxillofacial Surgery, F-59000 Lille, France.
| | - Romain Nicot
- Univ. Lille, CHU Lille, Inserm, Department of Oral and Maxillofacial Surgery, U1008 - Advanced Drug Delivery Systems, F-59000 Lille, France
| | - Gwénaël Raoul
- Univ. Lille, CHU Lille, Inserm, Department of Oral and Maxillofacial Surgery, U1008 - Advanced Drug Delivery Systems, F-59000 Lille, France
| | - Franck Afota
- Head and Neck Institute, University Hospital of Nice, 31 avenue de Valombrose, 06100 Nice, France
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Inoue T, Goto Y, Inoue Y, Adidharma P, Prasetya M, Fukushima T. Potential reasons for failure and recurrence in microvascular decompression for hemifacial spasm. Acta Neurochir (Wien) 2023; 165:3845-3852. [PMID: 38012393 DOI: 10.1007/s00701-023-05861-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 10/22/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND To examine the factors contributing to persistent and recurrent hemifacial spasms (HFS) following a microvascular decompression (MVD) procedure and to suggest technical improvements to prevent such failures. METHODS A retrospective review was conducted on fifty-two cases of repeat surgery. The extent of the previous craniotomy and the location of neurovascular compression (NVC) were investigated. The operative findings were categorized into two groups: "Missing Compression" and "Teflon Contact". The analysis included long-term outcomes and operative complications after repeat MVD procedures. RESULTS Missing compression was identified in 29 patients (56%), while Teflon contact was observed in 23 patients (44%). Patients with missing compression were more likely to experience improper craniotomy (66%) compared to those with Teflon contact (48%). Medially located NVC was a frequent finding in both groups, mainly due to compression by the anterior inferior cerebellar artery. In the missing compression group, during the repeat MVD, Teflon sling retraction was utilized in 79% of cases, while in the Teflon contact group, the most common procedure involved removing the Teflon in contact (65%). After the repeat MVD procedure, immediate spasm relief was achieved in 42 patients (81%), with six (12%) experiencing delayed relief. After a median follow-up of 54 months, 96% of patients were free from spasms. Delayed facial palsy, facial weakness, and hearing impairment were more frequently observed in the Teflon contact group. CONCLUSIONS A proper craniotomy that provides adequate exposure around the REZ is crucial to prevent missing the culprit vessel during the initial MVD procedure. Teflon contact on the REZ should be avoided, as it poses a potential risk of procedure failure and recurrence.
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Affiliation(s)
- Takuro Inoue
- Department of Neurosurgery, Koto Memorial Hospital, Higashiomi, Shiga, Japan.
- Department of Neurosurgery, National Brain Center Hospital, Jakarta, Indonesia.
| | - Yukihiro Goto
- Department of Neurosurgery, Koto Memorial Hospital, Higashiomi, Shiga, Japan
| | - Yasuaki Inoue
- Department of Neurosurgery, Nadogaya Hospital, Chiba, Japan
| | - Peter Adidharma
- Department of Neurosurgery, National Brain Center Hospital, Jakarta, Indonesia
| | - Mustaqim Prasetya
- Department of Neurosurgery, National Brain Center Hospital, Jakarta, Indonesia
| | - Takanori Fukushima
- Division of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
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Zhang X, Kizilski SB, Recco DP, Chaillo Lizarraga MD, Kneier NE, Schulz NE, Baird CW, Hammer PE, Hoganson DM. Systematic Analysis of PTFE Monocusp Leaflet Design in a Patient-Based 3D in-Vitro Model of Tetralogy of Fallot. Cardiovasc Eng Technol 2023; 14:827-839. [PMID: 37973699 DOI: 10.1007/s13239-023-00690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 10/09/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE Pulmonary valve (PV) monocusp reconstruction in transannular patch (TAP) right ventricular outflow tract (RVOT) repair for Tetralogy of Fallot has variable clinical outcomes across different surgical approaches. The study purpose was to systematically evaluate how monocusp leaflet design parameters affect valve function in-vitro. METHODS A 3D-printed, disease-specific RVOT model was tested under three infant physiological conditions. Monocusps were sewn into models with the native main pulmonary artery (MPA) forming backwalls that constituted 40% and 50% of the reconstructed circumference for z-score zero PV annulus and MPA diameters (native PV z-score - 3.52 and - 2.99 for BSA 0.32m2). Various leaflet free edge lengths (FEL) (relative to backwall), positions (relative to PV STJ), and scallop depths were investigated across both models. Pressure gradient, regurgitation, and coaptation were analyzed with descriptive statistics and regression models. RESULTS Increasing FEL beyond 100% of the MPA backwall decreased gradient but mildly increased regurgitation to a peak of 25%. Positioning the free edge 2 mm past the STJ mildly increased gradient for each FEL without significantly changing regurgitation compared to STJ placement. Scalloping leaflets trivially affected performance. Pre-folding leaflets improved mobility and slightly reduced gradient. CONCLUSIONS Balancing gradient, regurgitation, and oversizing for growth, a set of leaflet designs have been selected for pre-clinical evaluation. Designs with leaflet widths 140-160% in the 40% backwall model (110-120% in the 50% backwall), positioned at or 2 mm past the STJ, demonstrated the best results. The next stage of ex-vivo testing will additionally consider native RVOT distensibility, native leaflet interactions, and TAP characteristics.
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Affiliation(s)
- Xiaoya Zhang
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
- Harvard Medical School, Boston, MA, USA
- Department of Cardiac Surgery, First Hospital of Tsinghua University, Beijing, China
| | - Shannen B Kizilski
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
- Harvard Medical School, Boston, MA, USA
| | - Dominic P Recco
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
- Harvard Medical School, Boston, MA, USA
| | - Martha D Chaillo Lizarraga
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
| | - Nicholas E Kneier
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
| | - Noah E Schulz
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
| | - Christopher W Baird
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
- Harvard Medical School, Boston, MA, USA
| | - Peter E Hammer
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA
- Harvard Medical School, Boston, MA, USA
| | - David M Hoganson
- Department of Cardiac Surgery, Boston Children's Hospital, 300 Longwood Avenue, Bader, 2nd Floor, Boston, MA, 02215, USA.
- Harvard Medical School, Boston, MA, USA.
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Johnson W, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG, Shank RC, Slaga TJ, Snyder PW, Fiume M, Heldreth B. Safety Assessment of Polyfluorinated Polymers as Used in Cosmetics. Int J Toxicol 2023; 42:144S-161S. [PMID: 37978581 DOI: 10.1177/10915818231208647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
The Expert Panel for Cosmetic Ingredient Safety (Panel) reviewed the safety of 12 polyfluorinated polymers in cosmetic products; most of these ingredients have the reported function of film former in common. However, PTFE, the only ingredient that is reported as currently used in cosmetics, functions as a bulking agent and slip modifier, but not as a film former. The Panel reviewed data relevant to the safety of these ingredients under the intended conditions of use in cosmetic formulations, and concluded that PTFE and Hexafluoropropylene/Tetrafluoroethylene Copolymer are safe in cosmetics in the present practices of use and concentration described in the safety assessment; the data are insufficient to determine the safety of the 4 fluorinated-side-chain polymers and 6 fluorinated polyethers.
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Affiliation(s)
- Wilbur Johnson
- Cosmetic Ingredient Review Former Senior Scientific Analyst/Writer
| | | | | | - Ronald A Hill
- Expert Panel for Cosmetic Ingredient Safety Former Member
| | | | | | - James G Marks
- Expert Panel for Cosmetic Ingredient Safety Former Member
| | - Ronald C Shank
- Expert Panel for Cosmetic Ingredient Safety Former Member
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Hatipoglu Majernik G, Wolff Fernandes F, Al-Afif S, Heissler HE, Krauss JK. Microsurgical posterior fossa re-exploration for recurrent trigeminal neuralgia after previous microvascular decompression: common grounds-scarring, deformation, and the "piston effect". Acta Neurochir (Wien) 2023; 165:3877-3885. [PMID: 37955684 PMCID: PMC10739219 DOI: 10.1007/s00701-023-05877-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/26/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVE Microvascular decompression (MVD) is a well-accepted treatment modality for trigeminal neuralgia (TN) with high initial success rates. The causes for recurrence of TN after previously successful MVD have not been fully clarified, and its treatment is still a matter of debate. Here, we present the surgical findings and the clinical outcome of patients with recurrent TN after MVD who underwent posterior fossa re-exploration. METHODS Microsurgical posterior fossa re-exploration was performed in 26 patients with recurrent TN (mean age 59.1 years) who underwent MVD over a period of 10 years. The trigeminal nerve was exposed, and possible factors for recurrent TN were identified. Arachnoid scars and Teflon granulomas were dissected meticulously without manipulating the trigeminal nerve. Outcome of posterior fossa re-exploration was graded according to the Barrow Neurological Institute (BNI) pain intensity score. Follow-up was analyzed postoperatively at 3, 12, and 24 months and at the latest available time point for long-term outcome. RESULTS The mean duration of recurrent TN after the first MVD was 20 months. Pain relief was achieved in all patients with recurrent TN on the first postoperative day. Intraoperative findings were as follows: arachnoid scar tissue in 22/26 (84.6%) patients, arterial compression in 1/26 (3.8%), venous contact in 8/26 (30.8%), Teflon granuloma in 14/26 (53.8%), compression by an electrode in Meckel's cave used for treatment of neuropathic pain in 1/26 (3.8%), evidence of pulsations transmitted to the trigeminal nerve through the Teflon inserted previously/scar tissue ("piston effect") in 15/26 (57.7%), and combination of findings in 18/26 (69.2%). At long-term follow-up (mean 79.5 months; range, 29-184 months), 21/26 (80.8%) patients had favorable outcome (BNI I-IIIa). New hypaesthesia secondary to microsurgical posterior fossa re-exploration occurred in 5/26 (19.2%) patients. CONCLUSIONS Posterior fossa re-exploration avoiding manipulation to the trigeminal nerve, such as pinching or combing, may be a useful treatment option for recurrent TN after previously successful MVD providing pain relief in the majority of patients with a low rate of new hypaesthesia.
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Affiliation(s)
- Gökce Hatipoglu Majernik
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Lower Saxony, Germany
| | - Filipe Wolff Fernandes
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Lower Saxony, Germany.
| | - Shadi Al-Afif
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Lower Saxony, Germany
| | - Hans E Heissler
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Lower Saxony, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Lower Saxony, Germany
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49
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Yano M, Yasui K, Jo JI, Nishiura A, Hashimoto Y, Matsumoto N. Carbonate apatite versus β-tricalcium phosphate for rat vertical bone augmentation: A comparison of bioresorbable bone substitutes using polytetrafluoroethylene tubes. Dent Mater J 2023; 42:851-859. [PMID: 37853644 DOI: 10.4012/dmj.2023-112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
This study radiologically and histologically compared two bioresorbable bone substitutes with different compositions carbonate apatite (Cytrans® Granules; CGs) and β-tricalcium phosphate (β-TCP) for vertical bone augmentation on a rat skull using a polytetrafluoroethylene (PTFE) tubes. This PTFE tube was placed at the center of the skull, fixed with Super Bond, and augmented with CGs or β-TCP granules. Specimens with surrounding tissue were harvested at 4, 8, and 12 weeks postoperatively, and radiological and histological evaluations were performed. The bone volume to total volume ratio (BV/TV) of the β-TCP-implanted group was markedly higher than that of the CG-implanted group at 4 and 12 weeks postoperatively. Compared to CGs, β-TCP exhibited the ability to form blood vessels into the graft material for a short period after transplantation, as well as an elevated production of collagen into β-TCP granules during the bone formation process.
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Affiliation(s)
- Makiko Yano
- Department of Orthodontics, Osaka Dental University
| | | | | | - Aki Nishiura
- Department of Orthodontics, Osaka Dental University
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50
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Scuglia M, Frazão LP, Miranda A, Martins A, Barbosa-Sequeira J, Coimbra D, Longatto-Filho A, Reis RL, Nogueira-Silva C, Neves NM, Correia-Pinto J. Diaphragmatic hernia repair porcine model to compare the performance of biodegradable membranes against Gore-Tex ®. Pediatr Surg Int 2023; 40:7. [PMID: 37999778 PMCID: PMC10673990 DOI: 10.1007/s00383-023-05584-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/25/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND Patch repair of congenital diaphragmatic hernia (CDH) using Gore-Tex® is associated with infection, adhesions, hernia recurrence, long-term musculoskeletal sequels and poor tissue regeneration. To overcome these limitations, the performance of two novel biodegradable membranes was tested to repair CDH in a growing pig model. METHODS Twelve male pigs were randomly assigned to 3 different groups of 4 animals each, determined by the type of patch used during thoracoscopic diaphragmatic hernia repair (Gore-Tex®, polycaprolactone electrospun membrane-PCLem, and decellularized human chorion membrane-dHCM). After 7 weeks, all animals were euthanized, followed by necropsy for diaphragmatic evaluation and histological analysis. RESULTS Thoracoscopic defect creation and diaphragmatic repair were performed without any technical difficulty in all groups. However, hernia recurrence rate was 0% in Gore-Tex®, 50% in PCLem and 100% in dHCM groups. At euthanasia, Gore-Tex® patches appeared virtually unchanged and covered with a fibrotic capsule, while PCLem and dHCM patches were replaced by either floppy connective tissue or vascularized and floppy regenerated membranous tissue, respectively. CONCLUSION Gore-Tex® was associated with a higher survival rate and lower recurrence. Nevertheless, the proposed biodegradable membranes were associated with better tissue integration when compared with Gore-Tex®.
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Affiliation(s)
- Marianna Scuglia
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Laura P Frazão
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
| | - Alice Miranda
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Albino Martins
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
| | - Joana Barbosa-Sequeira
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Department of Pediatric Surgery, Centro Materno Infantil do Norte, Centro Hospitalar Universitário do Porto, Porto, Portugal
| | - Diana Coimbra
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Adhemar Longatto-Filho
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Department of Pathology (LIM-14), University of São Paulo School of Medicine, São Paulo, Brazil
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil
| | - Rui L Reis
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal
| | - Cristina Nogueira-Silva
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Department of Obstetrics and Gynecology, Hospital de Braga, Braga, Portugal
| | - Nuno M Neves
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
- 3B's Research Group, I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017, Barco, Guimarães, Portugal.
| | - Jorge Correia-Pinto
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
- Department of Pediatric Surgery, Hospital de Braga, Braga, Portugal
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