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Li Z, Lu X, Wu K, Wang J, Li Y, Li Y, Ren K, Han X. Graphene oxide-loaded rapamycin coating on airway stents inhibits stent-related granulation tissue hyperplasia. Eur J Cardiothorac Surg 2024; 66:ezae270. [PMID: 38980196 DOI: 10.1093/ejcts/ezae270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 04/24/2024] [Accepted: 07/09/2024] [Indexed: 07/10/2024] Open
Abstract
OBJECTIVES Our objective was to explore the safety and efficacy of a graphene oxide-loaded rapamycin-coated self-expandable metallic airway stent (GO@RAPA-SEMS) in a rabbit model. METHODS The dip coating method was used to develop a GO@RAPA-SEMS and a poly(lactic-co-glycolic)-acid loaded rapamycin-coated self-expandable metallic airway stent (PLGA@RAPA-SEMS). The surface structure was evaluated using a scanning electronic microscope. The in vitro drug-release profiles of the 2 stents were explored and compared. In the animal study, a total of 45 rabbits were randomly divided into 3 groups and underwent 3 kinds of stent placements. Computed tomography was performed to evaluate the degree of stenosis at 1, 2 and 3 months after the stent operation. Five rabbits in each group were sacrificed after the computed tomography scan. The stented trachea and blood were collected for further pathological analysis and laboratory testing. RESULTS The in vitro drug-release study revealed that GO@RAPA-SEMS exhibited a sudden release on the first day and maintained a certain release rate on the 14th day. The PLGA@RAPA-SEMS exhibited a longer sustained release time. All 45 rabbits underwent successful stent placement. Pathological results indicated that the granulation tissue thickness in the GO@RAPA-SEMS group was less than that in the PLGA@RAPA-SEMS group. The TUNEL and hypoxia-inducible factor-1α staining results support the fact that the granulation inhibition effect in the GO@RAPA-SEMS group was greater than that in the PLGA@RAPA-SEMS group. CONCLUSIONS GO@RAPA-SEMS effectively inhibited stent-related granulation tissue hyperplasia.
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Affiliation(s)
- Zongming Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
| | - Xin Lu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Kunpeng Wu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
| | - Jing Wang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Yahua Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
| | - Yifan Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
| | - Kewei Ren
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Institute of Zhengzhou University, Zhengzhou, Henan, China
- Interventional Treatment and Clinical Research Center of Henan Province, Zhengzhou, Henan, China
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Wen KC, Li ZA, Liu JH, Zhang C, Zhang F, Li FQ. Recent developments in ureteral stent: Substrate material, coating polymer and technology, therapeutic function. Colloids Surf B Biointerfaces 2024; 238:113916. [PMID: 38636438 DOI: 10.1016/j.colsurfb.2024.113916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/21/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
The ureteral stent is an effective treatment for clinical ureteral stricture following urological surgery, and the functional coating of the stent could effectively inhibit bacterial colonization and other complications. The present review provides an analysis and description of the materials used in ureteral stents and their coatings. Emphasis is placed on the technological advancements of functional coatings, taking into consideration the characteristics of these materials and the properties of their active substances. Furthermore, recent advances in enhancing the therapeutic efficacy of functional coatings are also reviewed. It is anticipated that this article will serve as a valuable reference providing insights for future research development on new drug-loaded ureteral stents.
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Affiliation(s)
- Kai-Chao Wen
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Zheng-An Li
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Ji-Heng Liu
- Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Chuan Zhang
- School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Feng Zhang
- Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China.
| | - Feng-Qian Li
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China.
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Wei J, Qin S, Li W, Chen Y, Feng T, Wei Y, Tan S, Liu G. Analysis of clinical characteristics of 617 patients with benign airway stenosis. Front Med (Lausanne) 2023; 10:1202309. [PMID: 37547601 PMCID: PMC10397385 DOI: 10.3389/fmed.2023.1202309] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/10/2023] [Indexed: 08/08/2023] Open
Abstract
Introduction Benign airway stenosis (BAS), namely airway narrowing caused by a variety of benign lesions, can lead to varying degrees of breathing difficulties and even death due to asphyxia. This study aimed to elucidate the clinical characteristics of BAS, including etiology, treatment and pathology, by analyzing the clinical data of BAS patients. Methods A retrospective analysis was conducted using the clinical data of 617 BAS cases from January 2017 to December 2022. The pathological characteristics of the tissues were assessed by hematoxylin-eosin (H&E) and Masson's staining. Besides, protein expression levels were determined by immunohistochemistry (IHC). Results A total of 617 patients were included (333 females [53.97%] and 284 males [46.03%]), with an average age of 48.93 ± 18.30 (range 14-87). Tuberculosis (n = 306, 49.59%) and trauma (n = 179, 29.02%) were the two leading etiologies of BAS, followed by airway foreign bodies (FB, n = 74, 11.99%), external compression (n = 25, 4.05%) and other etiologies (n = 33, 5.35%). Among 306 tuberculous tracheobronchial stenosis (TBTS) cases, most were females (n = 215, 70.26%), and TBTS mainly occurred in the left main bronchus (n = 97, 31.70%), followed by the right middle bronchus (n = 70 cases, 22.88%). The majority of TBTS patients (n = 259, 84.64%) were treated by interventional therapy. The condition of 179 BAS patients was ascribed to trauma, such as tracheal intubation (n = 92, 51.40%), tracheotomy (n = 69, 38.56%), injury (n = 15, 8.38%) and surgery (n = 3, 1.68%), which mostly took place in the trachea (n = 173, 96.65%). TAS patients mainly received interventional therapy (n = 168, 93.85%) and stent implantation (n = 47, 26.26%). The granulation tissues of BAS primarily featured inflammation, proliferation and fibrosis. IHC indicated the up-regulated expressions of transforming growth factor-β1 (TGF-β1), α-smooth muscle actin (α-SMA), collagen type I protein (COL-I) and vimentin, and the down-regulated expression of E-cadherin, which indicated fibrosis and epithelial-mesenchymal transition (EMT). Conclusion Tuberculosis was the main etiology, and trauma was the secondary etiology. The granulation tissues of BAS were characterized by inflammation, fibrosis and probably EMT. Comprehensive interventional therapy is an effective method of treating BAS.
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Affiliation(s)
- Jinmei Wei
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Medical University, Nanning, China
| | - Shujuan Qin
- Guangxi Medical University, Nanning, China
- Department of Pulmonary and Critical Care Medicine, Guigang City People's Hospital, Guigang, China
| | - Wentao Li
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yan Chen
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Tingmei Feng
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yuhui Wei
- Guangxi Medical University, Nanning, China
| | - Sen Tan
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Guangnan Liu
- Department of Respiratory and Critical Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
- Guangxi Medical University, Nanning, China
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Yang H, He C, Bi Y, Zhu X, Deng D, Ran T, Ji X. Synergistic effect of VEGF and SDF-1α in endothelial progenitor cells and vascular smooth muscle cells. Front Pharmacol 2022; 13:914347. [PMID: 35910392 PMCID: PMC9335858 DOI: 10.3389/fphar.2022.914347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Vascular endothelial growth factor (VEGF) is a potent agonist of angiogenesis that induces proliferation and differentiation of endothelial progenitor cells (EPCs) after vascular injury. Previous studies have suggested that stromal cell-derived factor 1-alpha (SDF-1α) and VEGF have a synergistic effect on vascular stenosis. The aim of the present study was to investigate whether VEGF and SDF-1α act synergistically in EPCs and vascular smooth muscle cells (VSMCs). In this study, EPCs were isolated from rat bone marrow and their morphology and function were studied. Subsequently, VEGF was delivered into EPCs using an adenoviral vector. Tube formation, migration, proliferation, and apoptosis of VEGF-overexpressing EPCs was analyzed. Then, EPCs were co-cultured with VSMCs in the presence or absence of SDF-1α, the migration, proliferation, apoptosis, and differentiation capacity of EPCs and VSMCs were analyzed respectively. The isolated EPCs showed typical morphological features, phagocytic capacity, and expressed surface proteins. While stable expression of VEGF remarkably enhanced tube formation, migration, and proliferation capacity of EPCs, apoptosis was decreased. Moreover, the proliferation, migration, and differentiation capacity of EPCs in the co-cultured model was enhanced in the presence of SDF-1α, and apoptosis was decreased. However, these effects were reversed in VSMCs. Therefore, our results showed that VEGF and SDF-1α synergistically increased the migration, differentiation, and proliferation capabilities of EPCs, but not VSMCs. This study suggests a promising strategy to prevent vascular stenosis.
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Affiliation(s)
- Haiyan Yang
- Department of Ultrasound, Chongqing General Hospital, Chongqing, China
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Cancan He
- Department of Pediatrics, The Affiliated Hospital of Zunyi Medical University, Guizhou Children’s Hospital, Zunyi, GZ, China
| | - Yang Bi
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xu Zhu
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Dan Deng
- School of Medical Imaging, Changsha Medical University, Changsha, China
| | - Tingting Ran
- Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical and Research Center of Child Health and Disorders, Chongqing Engineering Research Center of Stem Cell Therapy, Department of Ultrasound, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaojuan Ji
- Department of Ultrasound, Chongqing General Hospital, Chongqing, China
- *Correspondence: Xiaojuan Ji,
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Zhu H, Kong L, Zhu X, Ran T, Ji X. pH-Responsive Nanoparticles for Delivery of Paclitaxel to the Injury Site for Inhibiting Vascular Restenosis. Pharmaceutics 2022; 14:pharmaceutics14030535. [PMID: 35335910 PMCID: PMC8949492 DOI: 10.3390/pharmaceutics14030535] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 02/04/2023] Open
Abstract
A high incidence of restenosis has been reported at the site of inflammation following angioplasty and stent implantation. The anti-proliferative drug paclitaxel (PTX) could help to reduce inflammation and restenosis; however, it has poor water solubility and serious adverse side effects at high doses. Given the presence of metabolic acidosis at the site of inflammation, we hypothesized that nanoparticles that are responsive to low pH could precisely release the loaded drug at the target site. We successfully constructed pH-responsive poly(D, L-lactic-co-glycolic acid) (PLGA) nanoparticles loaded with PTX and NaHCO3 as a pH-sensitive therapeutic agent (PTX-NaHCO3-PLGA NPs). The NPs exhibited remarkable pH sensitivity and a good safety profile both in vitro in rat vascular smooth muscle cells and in vivo in Sprague Dawley rats after tail vein injection. In the rat model, the PTX-NaHCO3-PLGA NPs treatment group showed suppressed intimal proliferation following balloon-induced carotid artery injury compared with that of the saline-treated control. Overall, these results demonstrate that our newly developed pH-responsive nanodrug delivery platform has the potential to effectively inhibit restenosis.
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Affiliation(s)
- Huiru Zhu
- Department of Ultrasound Imaging, Children’s Hospital of Chongqing Medical University, Chongqing 400014, China; (H.Z.); (L.K.); (X.Z.); (T.R.)
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Li Kong
- Department of Ultrasound Imaging, Children’s Hospital of Chongqing Medical University, Chongqing 400014, China; (H.Z.); (L.K.); (X.Z.); (T.R.)
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Xu Zhu
- Department of Ultrasound Imaging, Children’s Hospital of Chongqing Medical University, Chongqing 400014, China; (H.Z.); (L.K.); (X.Z.); (T.R.)
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Tingting Ran
- Department of Ultrasound Imaging, Children’s Hospital of Chongqing Medical University, Chongqing 400014, China; (H.Z.); (L.K.); (X.Z.); (T.R.)
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Xiaojuan Ji
- Department of Ultrasound Imaging, Children’s Hospital of Chongqing Medical University, Chongqing 400014, China; (H.Z.); (L.K.); (X.Z.); (T.R.)
- National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
- Correspondence:
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