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Wang Y, Cao X, Shen Y, Zhong Q, Huang Y, Zhang Y, Wang S, Xu C. Initial Development of an Immediate Implantation Model in Rats and Assessing the Prognostic Impact of Periodontitis on Immediate Implantation. Bioengineering (Basel) 2023; 10:896. [PMID: 37627781 PMCID: PMC10451242 DOI: 10.3390/bioengineering10080896] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND To establish an immediate implantation rat model and to evaluate the effects of pre-existing periodontitis and two different socket rinse solutions on immediate implantation prognosis. METHODS Sprague-Dawley (SD) rats were randomly divided into three groups before immediate implantation, including the control group, the group with experimentally induced periodontitis (EP), in which rats have been experimentally induced periodontitis before implantation, and the group with induced periodontitis and with extraction sockets rinsed with three percent H2O2 (EP-H2O2), in which rats have been induced periodontitis before implantation, and extraction sockets were rinsed with three percent H2O2. Periodontitis was induced by ligating the thread around the molars for four weeks. Six weeks after titanium alloy implants were self-tapped and left to heal transmucosally, maxillae were dissected after the clinical examination to perform micro-CT and histological analysis. RESULTS An immediate implantation model was successfully built in rats. There was no significant difference in implant survival rates between the EP and control groups. However, the clinical examination results, micro-CT analysis, and histological analysis in EP and EP-H2O2 groups showed a significantly worse prognosis than in the control group. Three percent H2O2 showed a similar effect with saline. CONCLUSION This study presented a protocol for establishing a rat immediate implantation model and showed that periodontitis history might negatively affect the prognosis of immediate implantation. These findings urge caution and alternative strategies for patients with periodontal disease history, enhancing the long-term success of immediate implantation in dental practice. Additionally, the comparable outcomes between 3% H2O2 and saline suggest the use of saline as a cost-effective and safer alternative for implant site preparation in dental practice.
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Affiliation(s)
- Yingying Wang
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Ximeng Cao
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Yingyi Shen
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Qi Zhong
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Yujie Huang
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Yifan Zhang
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
| | - Shaohai Wang
- Department of Stomatology, Shanghai East Hospital, Tongji University School of Medicine, No. 150 Jimo Road, Shanghai 200120, China
| | - Chun Xu
- Department of Prosthodontics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai 200011, China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai 200011, China
- National Center for Stomatology and National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai 200011, China
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Farag A, Mandour AS, Hendawy H, Elhaieg A, Elfadadny A, Tanaka R. A review on experimental surgical models and anesthetic protocols of heart failure in rats. Front Vet Sci 2023; 10:1103229. [PMID: 37051509 PMCID: PMC10083377 DOI: 10.3389/fvets.2023.1103229] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/13/2023] [Indexed: 03/29/2023] Open
Abstract
Heart failure (HF) is a serious health and economic burden worldwide, and its prevalence is continuously increasing. Current medications effectively moderate the progression of symptoms, and there is a need for novel preventative and reparative treatments. The development of novel HF treatments requires the testing of potential therapeutic procedures in appropriate animal models of HF. During the past decades, murine models have been extensively used in fundamental and translational research studies to better understand the pathophysiological mechanisms of HF and develop more effective methods to prevent and control congestive HF. Proper surgical approaches and anesthetic protocols are the first steps in creating these models, and each successful approach requires a proper anesthetic protocol that maintains good recovery and high survival rates after surgery. However, each protocol may have shortcomings that limit the study's outcomes. In addition, the ethical regulations of animal welfare in certain countries prohibit the use of specific anesthetic agents, which are widely used to establish animal models. This review summarizes the most common and recent surgical models of HF and the anesthetic protocols used in rat models. We will highlight the surgical approach of each model, the use of anesthesia, and the limitations of the model in the study of the pathophysiology and therapeutic basis of common cardiovascular diseases.
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Affiliation(s)
- Ahmed Farag
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- *Correspondence: Ahmed Farag
| | - Ahmed S. Mandour
- Department of Animal Medicine (Internal Medicine), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
- Ahmed S. Mandour
| | - Hanan Hendawy
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Asmaa Elhaieg
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Ahmed Elfadadny
- Department of Animal Internal Medicine, Faculty of Veterinary Medicine, Damanhur University, Damanhur El-Beheira, Egypt
| | - Ryou Tanaka
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Ryou Tanaka
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Hill MA, Kwon JH, Gerry B, Hardy WA, Walkowiak OA, Kavarana MN, Nadig SN, Rajab TK. Immune Privilege of Heart Valves. Front Immunol 2021; 12:731361. [PMID: 34447390 PMCID: PMC8383064 DOI: 10.3389/fimmu.2021.731361] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 07/22/2021] [Indexed: 01/22/2023] Open
Abstract
Immune privilege is an evolutionary adaptation that protects vital tissues with limited regenerative capacity from collateral damage by the immune response. Classical examples include the anterior chamber of the eye and the brain. More recently, the placenta, testes and articular cartilage were found to have similar immune privilege. What all of these tissues have in common is their vital function for evolutionary fitness and a limited regenerative capacity. Immune privilege is clinically relevant, because corneal transplantation and meniscal transplantation do not require immunosuppression. The heart valves also serve a vital function and have limited regenerative capacity after damage. Moreover, experimental and clinical evidence from heart valve transplantation suggests that the heart valves are spared from alloimmune injury. Here we review this evidence and propose the concept of heart valves as immune privileged sites. This concept has important clinical implications for heart valve transplantation.
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Affiliation(s)
- Morgan Ashley Hill
- College of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Jennie H Kwon
- Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Brielle Gerry
- Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - William A Hardy
- College of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Olivia Agata Walkowiak
- College of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Minoo N Kavarana
- Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Satish N Nadig
- Division of Transplant Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - T Konrad Rajab
- Division of Cardiothoracic Surgery, Medical University of South Carolina, Charleston, SC, United States
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Chekhoeva A, Nakanishi S, Sugimura Y, Toshmatova M, Assmann AK, Lichtenberg A, Akhyari P, Assmann A. Dichloroacetate inhibits the degeneration of decellularized cardiovascular implants. Eur J Cardiothorac Surg 2021; 61:19-26. [PMID: 34297820 PMCID: PMC8715846 DOI: 10.1093/ejcts/ezab333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 05/26/2021] [Accepted: 06/11/2021] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES Intima hyperplasia is a major issue of biological cardiovascular grafts resulting in progressive in vivo degeneration that particularly decreases the durability of coronary and peripheral vascular bypasses. Previously, dichloroacetate (DCA) has been reported to prevent the formation of hyperplastic intima in injured arteries. In this study, the effect of DCA on the neointima formation and degeneration of decellularized small-caliber implants was investigated in a rat model. METHODS Donor rat aortic grafts (n = 22) were decellularized by a detergent-based technique, surface-coated with fibronectin (50 µl ml−1, 24 h incubation) and implanted via anastomoses to the infrarenal aorta of the recipients. Rats in the DCA group (n = 12) received DCA via drinking water during the whole follow-up period (0.75 g l−1), while rats without DCA treatment served as controls (n = 10). At 2 (n = 6 + 5) and 8 (n = 6 + 5) weeks, the grafts were explanted and examined by histology and immunofluorescence. RESULTS Systemic DCA treatment inhibited neointima hyperplasia, resulting in a significantly reduced intima-to-media ratio (median 0.78 [interquartile range, 0.51–1.27] vs 1.49 [0.67–2.39] without DCA, P < 0.001). At 8 weeks, neointima calcification, as assessed by an established von Kossa staining-based score, was significantly decreased in the DCA group (0 [0–0.25] vs 0.63 [0.06–1.44] without DCA, P < 0.001). At 8 weeks, explanted grafts in both groups were luminally completely covered by an endothelial cell layer. In both groups, inflammatory cell markers (CD3, CD68) proved negative. CONCLUSIONS Systemic DCA treatment reduces adverse neointima hyperplasia in decellularized small-caliber arterial grafts, while allowing for rapid re-endothelialization. Furthermore, DCA inhibits calcification of the implants.
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Affiliation(s)
- Agunda Chekhoeva
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Sentaro Nakanishi
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Yukiharu Sugimura
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Mahfuza Toshmatova
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Anna Kathrin Assmann
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Artur Lichtenberg
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Payam Akhyari
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
| | - Alexander Assmann
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
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Verbesserte Biokompatibilität von dezellularisierten Gefäßimplantaten mit „stromal cell-derived factor 1α“. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2020. [DOI: 10.1007/s00398-020-00386-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Diversity of Electrospinning Approach for Vascular Implants: Multilayered Tubular Scaffolds. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2020. [DOI: 10.1007/s40883-020-00157-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sugimura Y, Chekhoeva A, Oyama K, Nakanishi S, Toshmatova M, Miyahara S, Barth M, Assmann AK, Lichtenberg A, Assmann A, Akhyari P. Controlled autologous recellularization and inhibited degeneration of decellularized vascular implants by side-specific coating with stromal cell-derived factor 1α and fibronectin. ACTA ACUST UNITED AC 2020; 15:035013. [PMID: 31694001 DOI: 10.1088/1748-605x/ab54e3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Optimized biocompatibility is crucial for the durability of cardiovascular implants. Previously, a combined coating with fibronectin (FN) and stromal cell-derived factor 1α (SDF1α) has been shown to accelerate the in vivo cellularization of synthetic vascular grafts and to reduce the calcification of biological pulmonary root grafts. In this study, we evaluate the effect of side-specific luminal SDF1α coating and adventitial FN coating on the in vivo cellularization and degeneration of decellularized rat aortic implants. Aortic arch vascular donor grafts were detergent-decellularized. The luminal graft surface was coated with SDF1α, while the adventitial surface was coated with FN. SDF1α-coated and uncoated grafts were infrarenally implanted (n = 20) in rats and followed up for up to eight weeks. Cellular intima population was accelerated by luminal SDF1α coating at two weeks (92.4 ± 2.95% versus 61.1 ± 6.51% in controls, p < 0.001). SDF1α coating inhibited neo-intimal hyperplasia, resulting in a significantly decreased intima-to-media ratio after eight weeks (0.62 ± 0.15 versus 1.35 ± 0.26 in controls, p < 0.05). Furthermore, at eight weeks, media calcification was significantly decreased in the SDF1α group as compared to the control group (area of calcification in proximal arch region 1092 ± 517 μm2 versus 11 814 ± 1883 μm2, p < 0.01). Luminal coating with SDF1α promotes early autologous intima recellularization in vivo and attenuates neo-intima hyperplasia as well as calcification of decellularized vascular grafts.
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Affiliation(s)
- Yukiharu Sugimura
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Heinrich Heine University, Medical Faculty, Duesseldorf, Germany
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Shrestha B, DeLuna F, Anastasio MA, Yong Ye J, Brey EM. Photoacoustic Imaging in Tissue Engineering and Regenerative Medicine. TISSUE ENGINEERING. PART B, REVIEWS 2020; 26:79-102. [PMID: 31854242 PMCID: PMC7041335 DOI: 10.1089/ten.teb.2019.0296] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/13/2019] [Indexed: 12/16/2022]
Abstract
Several imaging modalities are available for investigation of the morphological, functional, and molecular features of engineered tissues in small animal models. While research in tissue engineering and regenerative medicine (TERM) would benefit from a comprehensive longitudinal analysis of new strategies, researchers have not always applied the most advanced methods. Photoacoustic imaging (PAI) is a rapidly emerging modality that has received significant attention due to its ability to exploit the strong endogenous contrast of optical methods with the high spatial resolution of ultrasound methods. Exogenous contrast agents can also be used in PAI for targeted imaging. Applications of PAI relevant to TERM include stem cell tracking, longitudinal monitoring of scaffolds in vivo, and evaluation of vascularization. In addition, the emerging capabilities of PAI applied to the detection and monitoring of cancer and other inflammatory diseases could be exploited by tissue engineers. This article provides an overview of the operating principles of PAI and its broad potential for application in TERM. Impact statement Photoacoustic imaging, a new hybrid imaging technique, has demonstrated high potential in the clinical diagnostic applications. The optical and acoustic aspect of the photoacoustic imaging system works in harmony to provide better resolution at greater tissue depth. Label-free imaging of vasculature with this imaging can be used to track and monitor disease, as well as the therapeutic progression of treatment. Photoacoustic imaging has been utilized in tissue engineering to some extent; however, the full benefit of this technique is yet to be explored. The increasing availability of commercial photoacoustic systems will make application as an imaging tool for tissue engineering application more feasible. This review first provides a brief description of photoacoustic imaging and summarizes its current and potential application in tissue engineering.
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Affiliation(s)
- Binita Shrestha
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Frank DeLuna
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Mark A. Anastasio
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jing Yong Ye
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
| | - Eric M. Brey
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, Texas
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In Vivo Performance of Decellularized Vascular Grafts: A Review Article. Int J Mol Sci 2018; 19:ijms19072101. [PMID: 30029536 PMCID: PMC6073319 DOI: 10.3390/ijms19072101] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/16/2018] [Accepted: 07/16/2018] [Indexed: 12/12/2022] Open
Abstract
Due to poor vessel quality in patients with cardiovascular diseases, there has been an increased demand for small-diameter tissue-engineered blood vessels that can be used as replacement grafts in bypass surgery. Decellularization techniques to minimize cellular inflammation have been applied in tissue engineering research for the development of small-diameter vascular grafts. The biocompatibility of allogenic or xenogenic decellularized matrices has been evaluated in vitro and in vivo. Both short-term and long-term preclinical studies are crucial for evaluation of the in vivo performance of decellularized vascular grafts. This review offers insight into the various preclinical studies that have been performed using decellularized vascular grafts. Different strategies, such as surface-modified, recellularized, or hybrid vascular grafts, used to improve neoendothelialization and vascular wall remodeling, are also highlighted. This review provides information on the current status and the future development of decellularized vascular grafts.
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