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Ye S, Jin N, Liu N, Cheng F, Hu L, Zhang G, Li Q, Jing J. Gases and gas-releasing materials for the treatment of chronic diabetic wounds. Biomater Sci 2024; 12:3273-3292. [PMID: 38727636 DOI: 10.1039/d4bm00351a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Chronic non-healing wounds are a common consequence of skin ulceration in diabetic patients, with severe cases such as diabetic foot even leading to amputations. The interplay between pathological factors like hypoxia-ischemia, chronic inflammation, bacterial infection, impaired angiogenesis, and accumulation of advanced glycosylation end products (AGEs), resulting from the dysregulation of the immune microenvironment caused by hyperglycemia, establishes an unending cycle that hampers wound healing. However, there remains a dearth of sufficient and effective approaches to break this vicious cycle within the complex immune microenvironment. Consequently, numerous scholars have directed their research efforts towards addressing chronic diabetic wound repair. In recent years, gases including Oxygen (O2), Nitric oxide (NO), Hydrogen (H2), Hydrogen sulfide (H2S), Ozone (O3), Carbon monoxide (CO) and Nitrous oxide (N2O), along with gas-releasing materials associated with them have emerged as promising therapeutic solutions due to their ability to regulate angiogenesis, intracellular oxygenation levels, exhibit antibacterial and anti-inflammatory effects while effectively minimizing drug residue-induced damage and circumventing drug resistance issues. In this review, we discuss the latest advances in the mechanisms of action and treatment of these gases and related gas-releasing materials in diabetic wound repair. We hope that this review can provide different ideas for the future design and application of gas therapy for chronic diabetic wounds.
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Affiliation(s)
- Shuming Ye
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Neng Jin
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Nan Liu
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Feixiang Cheng
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Liang Hu
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Guiyang Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China.
| | - Qi Li
- Department of Neurology, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
| | - Juehua Jing
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China.
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Zhang X, Jiao Y, Shen T, Yu Y, Yu Z, Dang J, Chen L, Zhang Y, Shen G. Sulfated Chitosan Nanofibrous Scaffolds Seeded With Adipose Stem Cells Promote Ischemic Wound Healing in a Proangiogenic Strategy. Cell Transplant 2024; 33:9636897241226847. [PMID: 38288604 PMCID: PMC10826405 DOI: 10.1177/09636897241226847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 02/01/2024] Open
Abstract
Ischemic wounds are chronic wounds with poor blood supply that delays wound reconstruction. To accelerate wound healing and promote angiogenesis, adipose-derived stem cells (ADSCs) are ideal seed cells for stem cell-based therapies. Nevertheless, providing a favorable environment for cell proliferation and metabolism poses a substantial challenge. A highly sulfated heparin-like polysaccharide 2-N, 6-O-sulfated chitosan (26SCS)-doped poly(lactic-co-glycolic acid) scaffold (S-PLGA) can be used due to their biocompatibility, mechanical properties, and coagent 26SCS high affinity for growth factors. In this study, a nano-scaffold system, constructed from ADSCs seeded on electrospun fibers of modified PLGA, was designed to promote ischemic wound healing. The S-PLGA nanofiber membrane loaded with adipose stem cells ADSCs@S-PLGA was prepared by a co-culture in vitro, and the adhesion and compatibility of cells on the nano-scaffolds were explored. Scanning electron microscopy was used to observe the growth state and morphological changes of ADSCs after co-culture with PLGA electrospun fibers. The proliferation and apoptosis after co-culture were detected using a Cell Counting Kit-8 kit and flow cytometry, respectively. An ischemic wound model was then established, and we further studied the ability of ADSCs@S-PLGA to promote wound healing and angiogenesis. We successfully established ischemic wounds on the backs of rats and demonstrated that electrospun fibers combined with the biological effects of adipose stem cells effectively promoted wound healing and the growth of microvessels around the ischemic wounds. Phased research results can provide a theoretical and experimental basis for a new method for promoting clinical ischemic wound healing.
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Affiliation(s)
- Xi Zhang
- Department of Oral and Maxillofacial Surgery, Affiliated Shanghai Ninth People’s Hospital, Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yan Jiao
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Tong Shen
- State Key laboratory of bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Yuanman Yu
- State Key laboratory of bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Zhou Yu
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Juanli Dang
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Lin Chen
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Yu Zhang
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Guofang Shen
- Department of Oral and Maxillofacial Surgery, Affiliated Shanghai Ninth People’s Hospital, Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Papic M, Zivanovic S, Vucicevic T, Vuletic M, Papic MV, Milivojević N, Mirić A, Miletic Kovacevic M, Zivanovic M, Stamenkovic M, Zivkovic V, Mitrovic S, Jakovljevic V, Ljujic B, Popovic M. Effects of direct pulp capping with recombinant human erythropoietin and/or mineral trioxide aggregate on inflamed rat dental pulp. Mol Cell Biochem 2023:10.1007/s11010-023-04868-z. [PMID: 37880442 DOI: 10.1007/s11010-023-04868-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 10/01/2023] [Indexed: 10/27/2023]
Abstract
OBJECTIVE This study aimed to evaluate the dental pulp responses to recombinant human erythropoietin (rhEPO) and/or mineral trioxide aggregate (MTA) in pulp capping of inflamed dental pulp in vivo. MATERIALS AND METHODS In accordance with ARRIVE guidelines, pulp inflammation was induced by exposing the maxillary first molars (n = 64) of Wistar rats (n = 32) to the oral environment for two days. The exposed pulps were randomly assigned four groups based on the pulp capping material: rhEPO, MTA, MTA + rhEPO, or an inert membrane. An additional eight rats formed the healthy control group. After four weeks, the animals were euthanized, and histological, qRT-PCR, and spectrophotometric techniques were employed to analyze the left maxillary segments, right first maxillary molars, and blood samples, respectively. Statistical significance was set at p < 0.05 and < 0.001. RESULTS Pulp capping with rhEPO, MTA, or MTA + rhEPO resulted in lower inflammation and higher mineralization scores compared to untreated control. MTA + rhEPO group exhibited significantly decreased expression of tumor necrosis factor-alpha, and interleukin 1-beta, while MTA group showed substantially reduced expression of interferon-gamma. Both rhEPO and MTA + rhEPO groups presented elevated dentin matrix protein 1 levels compared to untreated control. Furthermore, pulp capping with rhEPO and/or MTA led to increased transforming growth factor-beta 1 expression and reductions of pro-inflammatory/immunoregulatory cytokine ratios and prooxidative markers. Pulp capping with rhEPO also resulted in increase of systemic antioxidative stress markers. CONCLUSION Capping with rhEPO or MTA + rhEPO resulted in a favorable effect that was similar or even superior to that of MTA.
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Affiliation(s)
- Milos Papic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia.
| | - Suzana Zivanovic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia
| | - Tamara Vucicevic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia
| | - Miona Vuletic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia
| | - Mirjana V Papic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia
| | - Nevena Milivojević
- Department of Science, Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
| | - Ana Mirić
- Department of Science, Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
| | - Marina Miletic Kovacevic
- Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Marko Zivanovic
- Department of Science, Institute for Information Technologies, University of Kragujevac, Kragujevac, Serbia
| | | | - Vladimir Zivkovic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Slobodanka Mitrovic
- Department of Pathology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Vladimir Jakovljevic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Biljana Ljujic
- Department of Genetics, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Milica Popovic
- Department of Dentistry, Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica Str. 69, Kragujevac, Republic of Serbia
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Tan F, Xuan Y, Long L, Yu Y, Zhang C, Liang P, Wang Y, Chen M, Wen J, Chen G. Single-cell analysis of human prepuce reveals dynamic changes in gene regulation and cellular communications. BMC Genomics 2023; 24:514. [PMID: 37658288 PMCID: PMC10474653 DOI: 10.1186/s12864-023-09615-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023] Open
Abstract
BACKGROUND The cellular and molecular dynamics of human prepuce are crucial for understanding its biological and physiological functions, as well as the prevention of related genital diseases. However, the cellular compositions and heterogeneity of human prepuce at single-cell resolution are still largely unknown. Here we systematically dissected the prepuce of children and adults based on the single-cell RNA-seq data of 90,770 qualified cells. RESULTS We identified 15 prepuce cell subtypes, including fibroblast, smooth muscle cells, T/natural killer cells, macrophages, vascular endothelial cells, and dendritic cells. The proportions of these cell types varied among different individuals as well as between children and adults. Moreover, we detected cell-type-specific gene regulatory networks (GRNs), which could contribute to the unique functions of related cell types. The GRNs were also highly dynamic between the prepuce cells of children and adults. Our cell-cell communication network analysis among different cell types revealed a set of child-specific (e.g., CD96, EPO, IFN-1, and WNT signaling pathways) and adult-specific (e.g., BMP10, NEGR, ncWNT, and NPR1 signaling pathways) signaling pathways. The variations of GRNs and cellular communications could be closely associated with prepuce development in children and prepuce maintenance in adults. CONCLUSIONS Collectively, we systematically analyzed the cellular variations and molecular changes of the human prepuce at single-cell resolution. Our results gained insights into the heterogeneity of prepuce cells and shed light on the underlying molecular mechanisms of prepuce development and maintenance.
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Affiliation(s)
- Fei Tan
- School of Medicine, Shanghai Skin Disease Hospital, Tongji University, Shanghai, 200443, China.
- Shanghai Skin Disease Clinical College, The Fifth Clinical Medical College, Anhui Medical University, Shanghai Skin Disease Hospital, Shanghai, 200443, China.
| | - Yuan Xuan
- Shanghai Skin Disease Clinical College, The Fifth Clinical Medical College, Anhui Medical University, Shanghai Skin Disease Hospital, Shanghai, 200443, China
| | - Lan Long
- Longgang District Maternity & Child Healthcare Hospital of Shenzhen City, Shenzhen, 518172, China
| | - Yang Yu
- Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Chunhua Zhang
- Department of Dermatology, Shanghai Baoshan Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, 201999, China
| | - Pengchen Liang
- School of Microelectronics, Shanghai University, Shanghai, 201800, China
| | - Yaoqun Wang
- Shanghai Skin Disease Clinical College, The Fifth Clinical Medical College, Anhui Medical University, Shanghai Skin Disease Hospital, Shanghai, 200443, China
| | - Meiyu Chen
- Shanghai Skin Disease Clinical College, The Fifth Clinical Medical College, Anhui Medical University, Shanghai Skin Disease Hospital, Shanghai, 200443, China
| | - Jiling Wen
- Department of Urology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China.
| | - Geng Chen
- School of Medicine, Shanghai Skin Disease Hospital, Tongji University, Shanghai, 200443, China.
- Center for Bioinformatics and Computational Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, China.
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Tang X, Ren J, Wei X, Wang T, Li H, Sun Y, Liu Y, Chi M, Zhu S, Lu L, Zhang J, Yang B. Exploiting synergistic effect of CO/NO gases for soft tissue transplantation using a hydrogel patch. Nat Commun 2023; 14:2417. [PMID: 37105981 PMCID: PMC10140290 DOI: 10.1038/s41467-023-37959-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Autologous skin flap transplantation is a common method for repairing complex soft tissue defects caused by cancer, trauma, and congenital malformations. Limited blood supply range and post-transplantation ischemia-reperfusion injury can lead to distal necrosis of the flap and long-term functional loss, which severely restricts the decision-making regarding the optimal surgical plan. To address this issue, we develop a hydrogel patch that releases carbon monoxide and nitric oxide gases on demand, to afford a timely blood supply for skin flap transplantation during surgery. Using an ischemia-reperfusion dorsal skin flap model in rats, we show that the hydrogel patch maintains the immediate opening of blood flow channels in transplanted tissue and effective blood perfusion throughout the perioperative period, activating perfusion of the hemodynamic donor site. We demonstrate that the hydrogel patch promotes distal vascularization and long-term functional reconstruction of transplanted tissues by inhibiting inflammatory damage and accelerating blood vessel formation.
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Affiliation(s)
- Xiaoduo Tang
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China
| | - Jingyan Ren
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China
| | - Xin Wei
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
| | - Tao Wang
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
| | - Haiqiu Li
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
| | - Yihan Sun
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China
| | - Yang Liu
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
| | - Mingli Chi
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China
| | - Shoujun Zhu
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China.
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China.
| | - Laijin Lu
- Department of Hand and Podiatric Surgery, Orthopedics Center, The First Hospital of Jilin University, Jilin University, Changchun, PR China.
| | - Junhu Zhang
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China.
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China.
| | - Bai Yang
- Joint Laboratory of Opto-Functional Theranostics in Medicine and Chemistry, The First Hospital of Jilin University, Jilin University, Changchun, PR China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, PR China
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Wu XY, Zhu YM, Qi Y, Xu WW, Jing-Zhai. Erythropoietin, as a biological macromolecule in modification of tissue engineered constructs: A review. Int J Biol Macromol 2021; 193:2332-2342. [PMID: 34793816 DOI: 10.1016/j.ijbiomac.2021.11.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/08/2021] [Accepted: 11/10/2021] [Indexed: 12/14/2022]
Abstract
In recent years, tissue engineering has emerged as a promising approach to address limitations of organ transplantation. The ultimate goal of tissue engineering is to provide scaffolds that closely mimic the physicochemical and biological cues of native tissues' extracellular matrix. In this endeavor, new generation of scaffolds have been designed that utilize the incorporation of signaling molecules in order to improve cell recruitment, enhance angiogenesis, exert healing activities, and increase the engraftment of the scaffolds. Among different signaling molecules, the role of erythropoietin (EPO) in regenerative medicine is increasingly being appreciated. It is a biological macromolecule which can prevent programed cell death, modulate inflammation, induce cell proliferation, and provide tissue protection in different disease models. In this review, we have outlined and critically analyzed different techniques of scaffolds' modification with EPO or EPO-loaded nanoparticles. We have also explored different strategies for the incorporation of EPO into scaffolds. Non-hematopoietic functions of EPO have also been discussed. Finalizing with detailed discussion surrounding the applications, challenges, and future perspectives of EPO-modified scaffolds in regenerative medicine.
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Affiliation(s)
- Xiao-Yu Wu
- Department of Surgical Oncology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, China
| | - Yi-Miao Zhu
- First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210046, China
| | - Yang Qi
- First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210046, China
| | - Wen-Wen Xu
- Department of Gynaecology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, China.
| | - Jing-Zhai
- Department of Surgical Oncology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210029, China.
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Tran TTT, Hara A, Kitagawa K, Kitajima S, Toyama T, Iwata Y, Sakai N, Shimizu M, Kaneko S, Furuichi K, Wada T. Relationship between autoantibodies to erythropoietin receptor and renal outcome in patients with anti-neutrophil cytoplasmic antibody-associated vasculitis. Biomarkers 2020; 25:194-200. [PMID: 32024392 DOI: 10.1080/1354750x.2020.1727014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Purpose: We examined the relationship between autoantibodies to erythropoietin receptor (EPOR) and renal outcome in patients with anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV).Materials and methods: Sixty-three Japanese patients with AAV were enrolled and followed for a median of 31.4 months. Patients were screened for serum anti-EPOR antibodies using an enzyme-linked immunosorbent assay. Associations of anti-EPOR antibodies with clinical parameters were analyzed using logistic-regression models.Results: Anti-EPOR antibodies were detected in 7 (11%) of the 63 patients, and levels of the antibodies decreased with immunosuppressive therapy. The presence of anti-EPOR antibodies was associated with a higher Birmingham vasculitis activity score. In addition, anti-EPOR antibodies were more frequently observed in patients with renal outcomes, which was defined as a sustained 50% reduction in the estimated glomerular filtration rate from baseline, than in those without. Multiple logistic regression analysis revealed that presence of anti-EPOR antibodies, as well as age at disease onset, were as risk factors for the renal outcome.Conclusion: Anti-EPOR antibodies were associated with the progression of renal dysfunction in patients with AAV.
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Affiliation(s)
- Trang Thi Thu Tran
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan.,Department of Environmental and Preventive Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kiyoki Kitagawa
- Division of Nephrology, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan
| | - Shinji Kitajima
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tadashi Toyama
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Yasunori Iwata
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Norihiko Sakai
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Miho Shimizu
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Disease Control and Homeostasis, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kengo Furuichi
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan.,Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
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8
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Lyra Junior HF, Rodrigues IK, Schiavon LDL, D`Acâmpora AJ. Ghrelin and gastrointestinal wound healing. A new perspective for colorectal surgery. Acta Cir Bras 2018; 33:282-294. [PMID: 29668782 DOI: 10.1590/s0102-865020180030000010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 02/28/2018] [Indexed: 12/21/2022] Open
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9
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Sorg H, Grambow E, Eckl E, Vollmar B. Oxytocin effects on experimental skin wound healing. Innov Surg Sci 2017; 2:219-232. [PMID: 31579755 PMCID: PMC6754027 DOI: 10.1515/iss-2017-0033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 07/14/2017] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Oxytocin (OXY) has significant effects on mammalian behavior. Next to its role in lactation and social interactions, it is described to support better wound healing as well. However, direct OXY effects on wound healing and the regeneration of the microvascular network are still not clarified. We therefore examined the effects of OXY and an OXY receptor antagonist [atosiban (ATO)] on skin wound healing, focusing on epithelialization and neovascularization. METHODS Skin wound healing has been assessed using intravital fluorescence microscopy in a model of full dermal thickness wounds in the dorsal skin fold chamber of hairless mice. Animals received repetitive low or high doses of OXY or ATO. Morphological and cellular characterization of skin tissue repair was performed by histology and in vitro cell assays. RESULTS The assessment of skin tissue repair using this therapy regimen showed that OXY and ATO had no major influence on epithelialization, neovascularization, wound cellularity, or inflammation. Moreover, OXY and ATO did neither stimulate nor deteriorate keratinocyte or fibroblast migration and proliferation. CONCLUSION In summary, this study is the first to demonstrate that OXY application does not impair skin wound healing or cell behavior. However, until now, the used transmitter system seems not to be clarified in detail, and it might be proposed that it is associated with the stress response of the organism to various stimuli.
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Affiliation(s)
- Heiko Sorg
- Institute for Experimental Surgery, University Medicine Rostock, Schillingallee 69a, 18057 Rostock, Germany
- Department of Plastic, Reconstructive and Aesthetic Surgery, Hand Surgery, Alfried Krupp Krankenhaus, Essen, Germany
| | - Eberhard Grambow
- Institute for Experimental Surgery, University Medicine Rostock, Rostock, Germany
| | - Erik Eckl
- Institute for Experimental Surgery, University Medicine Rostock, Rostock, Germany
| | - Brigitte Vollmar
- Institute for Experimental Surgery, University Medicine Rostock, Rostock, Germany
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10
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Effect of Erythropoietin on Transfusion Requirements for Craniosynostosis Surgery in Children. J Craniofac Surg 2017; 28:1315-1319. [DOI: 10.1097/scs.0000000000003717] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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11
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Castillo GM, Nishimoto-Ashfield A, Jones CC, Kabirov KK, Zakharov A, Lyubimov AV. Protected graft copolymer-formulated fibroblast growth factors mitigate the lethality of partial body irradiation injury. PLoS One 2017; 12:e0171703. [PMID: 28207794 PMCID: PMC5313194 DOI: 10.1371/journal.pone.0171703] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/23/2017] [Indexed: 12/11/2022] Open
Abstract
We evaluated the mitigating effects of fibroblast growth factor 4 and 7 (FGF4 and FGF7, respectively) in comparison with long acting protected graft copolymer (PGC)-formulated FGF4 and 7 (PF4 and PF7, respectively) administered to C57BL/6J mice a day after exposure to LD50/30 (15.7 Gy) partial body irradiation (PBI) which targeted the gastrointestinal (GI) system. The PGC that we developed increased the bioavailability of FGF4 and FGF7 by 5- and 250-fold compared to without PGC, respectively, and also sustained a 24 hr presence in the blood after a single subcutaneous administration. The dose levels tested for mitigating effects on radiation injury were 3 mg/kg for the PF4 and PF7 and 1.5 mg each for their combination (PF4/7). Amifostine administered prior to PBI was used as a positive control. The PF4, PF7, or PF4/7 mitigated the radiation lethality in mice. The mitigating effect of PF4 and PF7 was similar to the positive control and PF7 was better than other mitigators tested. The plasma citrulline levels and hematology parameters were early markers of recovery and survival. GI permeability function appeared to be a late or full recovery indicator. The villus length and crypt number correlated with plasma citrulline level, indicating that it can act as a surrogate marker for these histology evaluations. The IL-18 concentrations in jejunum as early as day 4 and TPO levels in colon on day 10 following PBI showed statistically significant changes in irradiated versus non-irradiated mice which makes them potential biomarkers of radiation exposure. Other colon and jejunum cytokine levels are potentially useful but require larger numbers of samples than in the present study before their full utility can be realized.
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Affiliation(s)
| | | | | | - Kasim K. Kabirov
- Toxicology Research Laboratory, Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Alexander Zakharov
- Toxicology Research Laboratory, Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Alexander V. Lyubimov
- Toxicology Research Laboratory, Department of Pharmacology, University of Illinois at Chicago, Chicago, IL, United States of America
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12
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Zhao R, Liang H, Clarke E, Jackson C, Xue M. Inflammation in Chronic Wounds. Int J Mol Sci 2016; 17:ijms17122085. [PMID: 27973441 PMCID: PMC5187885 DOI: 10.3390/ijms17122085] [Citation(s) in RCA: 526] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/30/2016] [Accepted: 12/05/2016] [Indexed: 12/26/2022] Open
Abstract
Non-healing chronic wounds present a major biological, psychological, social, and financial burden on both individual patients and the broader health system. Pathologically extensive inflammation plays a major role in the disruption of the normal healing cascade. The causes of chronic wounds (venous, arterial, pressure, and diabetic ulcers) can be examined through a juxtaposition of normal healing and the rogue inflammatory response created by the common components within chronic wounds (ageing, hypoxia, ischaemia-reperfusion injury, and bacterial colonisation). Wound bed care through debridement, dressings, and antibiotics currently form the basic mode of treatment. Despite recent setbacks, pharmaceutical adjuncts form an interesting area of research.
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Affiliation(s)
- Ruilong Zhao
- Sutton Arthritis Research Laboratory, Kolling Institute of Medical Research, University of Sydney, NSW 2065, Australia.
| | - Helena Liang
- Sutton Arthritis Research Laboratory, Kolling Institute of Medical Research, University of Sydney, NSW 2065, Australia.
| | - Elizabeth Clarke
- Murray Maxwell Biomechanics Laboratory, Kolling Institute of Medical Research, University of Sydney, NSW 2065, Australia.
| | - Christopher Jackson
- Sutton Arthritis Research Laboratory, Kolling Institute of Medical Research, University of Sydney, NSW 2065, Australia.
| | - Meilang Xue
- Sutton Arthritis Research Laboratory, Kolling Institute of Medical Research, University of Sydney, NSW 2065, Australia.
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13
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Uslu M, Kaya E, Yaykaşlı KO, Oktay M, Inanmaz ME, Işık C, Erdem H, Erkan ME, Kandiş H. Erythropoietin stimulates patellar tendon healing in rats. Knee 2015; 22:461-8. [PMID: 26067853 DOI: 10.1016/j.knee.2015.01.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 11/17/2014] [Accepted: 01/21/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Erythropoietin (EPO), regulating erythropoiesis, is used to provide protective and regenerative activity in non-haematopoietic tissues. There is insufficient knowledge about the role of EPO activity in tendon healing. Therefore, we investigated the effect of EPO treatment on healing in rat patellar tendons. METHODS One hundred and twenty-six, four-month-old male Sprague-Dawley rats were randomly assigned to three experimental groups: 1, no treatment; 2, treatment with isotonic saline (NaCl) and 3, treatment with EPO. Each group was randomly subdivided into two groups for sacrifice at three (1a, 2a, 3a) or six weeks (1b, 2b, 3b). Complete incision of the left patellar tendon from the distal patellar pole was performed. We applied body casts for 20 days after the incised edges of the patellar tendon were brought together with a surgical technique. Both legs were harvested and specimens from each group underwent histological, biomechanical, and protein mRNA expression analyses. RESULTS There were statistically significant differences in the ultimate breaking force between the EPO group and others at both weeks three and six (p<0.05); significant differences in fibroblast proliferation, capillary vessel formation, and local inflammation were found between groups 1a and 3a, and 2a and 3a (p<0.05). There were statistical differences between 1a, 3a and 2a, 3a for Col III, TGF-β1, and VEGF and between 1b, 3b and 2b, 3b for Col I, Col III, TGF-β1, and VEGF mRNA expressions. CONCLUSION EPO had an additive effect with surgery on the injured tendon healing process in rats compared to the control groups biomechanically, histopathologically and with tissue protein mRNA expression. CLINICAL RELEVANCE This is the first experimental study to analyze the relationship between EPO treatment and the patellar tendon repair process by biomechanical, histopathological, and tendon tissue mRNA expression methodologies.
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Affiliation(s)
- Mustafa Uslu
- Düzce University Medical School, Department of Orthopaedics and Traumatology, Düzce, Turkey.
| | - Ertuğrul Kaya
- Düzce University Medical School, Department of Medical Pharmacology, Düzce, Turkey
| | - Kürşat Oğuz Yaykaşlı
- Kahramanmaras Sutcu Imam University, Faculty of Medicine, Department of Medical Biology, Kahramanmaras, Turkey
| | - Murat Oktay
- Düzce University Medical School, Department of Pathology, Düzce, Turkey
| | - Mustafa Erkan Inanmaz
- Sakarya University Medical School, Department of Orthopaedics and Traumatology, Sakarya, Turkey
| | - Cengiz Işık
- Bolu Abant Izzet Baysal University Medical School, Department of Orthopaedics and Traumatology, Bolu, Turkey
| | - Havva Erdem
- Düzce University Medical School, Department of Pathology, Düzce, Turkey
| | - Melih Engin Erkan
- Düzce University Medical School, Department of Nuclear Medicine, Düzce, Turkey
| | - Hayati Kandiş
- Düzce University Medical School, Department of First Aid and Emergency, Düzce, Turkey
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14
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Hosseinjani H, Hadjibabaie M, Gholami K, Javadi M, Radfar M, Jahangard-Rafsanjani Z, Hosseinjani E, Shabani N, Vaezi M, Ghavamzadeh A. The efficacy of erythropoietin mouthwash in prevention of oral mucositis in patients undergoing autologous hematopoietic SCT: a double-blind, randomized, placebo-controlled trial. Hematol Oncol 2015; 35:106-112. [PMID: 26310513 DOI: 10.1002/hon.2250] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 07/14/2015] [Accepted: 07/14/2015] [Indexed: 11/11/2022]
Abstract
Oral mucositis (OM) as a complication of high-dose chemotherapy is frequently occurred in hematopoietic stem cell transplantation (HSCT) settings. Erythropoietin (EPO) has anti-inflammatory, antioxidant and wound-healing properties and therefore could have an important role in the prevention of OM. We conducted a double-blind, randomized, placebo-controlled trial to evaluate the EPO mouthwash effect on OM incidence and severity in 80 patients with non-Hodgkin's lymphoma, Hodgkin disease (HD) or multiple myeloma, undergoing autologous hematopoietic stem cell transplantation. Patients received either EPO mouthwash (50 IU/ml, 15 ml four times a day) (n = 40) or placebo (n = 40) from the starting day of high-dose chemotherapy until day +14 after transplantation or until the day of discharge from the hospital, whichever occurred first. OM was evaluated daily for 21 days after transplantation or until resolution of OM according to World Health Organization oral toxicity scale. The incidence of OM (grades 1-4) in the EPO mouthwash group and control group was significantly different (27.5% vs 77.5%, p < 0.001). The mean ± SD of two other parameters of OM including maximum intensity OM score (0.60 ± 1.06 vs 1.67 ± 1.27) and average intensity OM score (0.47 ± 0.80 vs 1.28 ± 0.86) was significantly lower in the intervention group (p < 0.001). Moreover, the mean ± SD duration of OM was also significantly shorter among the EPO mouthwash recipients (1.92 ± 3.42 days vs 5.42 ± 3.86 days, P < 0.001). Also, the duration of neutropenic fever was significantly shorter in the intervention group (2.12 ± 2.42 days vs 3.95 ± 4.01 days, p = 0.016). It is concluded that EPO mouthwash can reduce the incidence and duration of OM. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Hesamoddin Hosseinjani
- Clinical Pharmacy Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Molouk Hadjibabaie
- Clinical Pharmacy Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Rational Use of Drugs, Tehran University of Medical Sciences, Tehran, Iran
| | - Kheirollah Gholami
- Clinical Pharmacy Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Rational Use of Drugs, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammadreza Javadi
- Clinical Pharmacy Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Rational Use of Drugs, Tehran University of Medical Sciences, Tehran, Iran
| | - Mania Radfar
- Clinical Pharmacy Department, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Nazanin Shabani
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Vaezi
- Hematology-Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ardeshir Ghavamzadeh
- Hematology-Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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15
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Neuroprotective effect of erythropoietin against pressure ulcer in a mouse model of small fiber neuropathy. PLoS One 2014; 9:e113454. [PMID: 25422898 PMCID: PMC4244151 DOI: 10.1371/journal.pone.0113454] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 10/24/2014] [Indexed: 01/31/2023] Open
Abstract
An increased risk of skin pressure ulcers (PUs) is common in patients with sensory neuropathies, including those caused by diabetes mellitus. Recombinant human erythropoietin (rhEPO) has been shown to protect the skin against PUs developed in animal models of long-term diabetes. The aim of this work was to determine whether rhEPO could prevent PU formation in a mouse model of drug-inducedSFN. Functional SFN was induced by systemic injection of resiniferatoxin (RTX, 50 µg/kg, i.p.). RhEPO (3000 UI/kg, i.p.) was given the day before RTX injection and then every other day. Seven days after RTX administration, PUs were induced by applying two magnetic plates on the dorsal skin. RTX-treated mice expressed thermal and mechanical hypoalgesia and showed calcitonin gene-related peptide (CGRP) and substance P (SP) depletion without nerve degeneration or vascular dysfunction. RTX mice developed significantly larger stage 2 PUs than Vehicle mice. RhEPO prevented thermal and mechanical hypoalgesia and neuropeptide depletion in small nerve fibers. RhEPO increased hematocrit and altered endothelium-dependent vasodilatation without any effect on PU formation in Vehicle mice. The characteristics of PUs in RTX mice treated with rhEPO and Vehicle mice were found similar. In conclusion, RTX appeared to increased PU development through depletion of CGRP and SP in small nerve fibers, whereas systemic rhEPO treatment had beneficial effect on peptidergic nerve fibers and restored skin protective capacities against ischemic pressure. Our findings support the evaluation of rhEPO and/or its non-hematopoietic analogs in preventing to prevent PUs in patients with SFN.
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16
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Debeljak N, Solár P, Sytkowski AJ. Erythropoietin and cancer: the unintended consequences of anemia correction. Front Immunol 2014; 5:563. [PMID: 25426117 PMCID: PMC4227521 DOI: 10.3389/fimmu.2014.00563] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/22/2014] [Indexed: 01/12/2023] Open
Abstract
Until 1990, erythropoietin (EPO) was considered to have a single biological purpose and action, the stimulation of red blood cell growth and differentiation. Slowly, scientific and medical opinion evolved, beginning with the discovery of an effect on endothelial cell growth in vitro and the identification of EPO receptors (EPORs) on neuronal cells. We now know that EPO is a pleiotropic growth factor that exhibits an anti-apoptotic action on numerous cells and tissues, including malignant ones. In this article, we present a short discussion of EPO, receptors involved in EPO signal transduction, and their action on non-hematopoietic cells. This is followed by a more detailed presentation of both pre-clinical and clinical data that demonstrate EPO’s action on cancer cells, as well as tumor angiogenesis and lymphangiogenesis. Clinical trials with reported adverse effects of chronic erythropoiesis-stimulating agents (ESAs) treatment as well as clinical studies exploring the prognostic significance of EPO and EPOR expression in cancer patients are reviewed. Finally, we address the use of EPO and other ESAs in cancer patients.
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Affiliation(s)
- Nataša Debeljak
- Faculty of Medicine, Institute of Biochemistry, University of Ljubljana , Ljubljana , Slovenia
| | - Peter Solár
- Department of Cell and Molecular Biology, Institute of Biology and Ecology, Faculty of Sciences, Pavol Jozef Šafárik University , Košice , Slovakia
| | - Arthur J Sytkowski
- Oncology Therapeutic Area, Quintiles Transnational , Arlington, MA , USA
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17
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Øines MN, Krarup PM, Jorgensen LN, Ågren MS. Pharmacological interventions for improved colonic anastomotic healing: A meta-analysis. World J Gastroenterol 2014; 20:12637-12648. [PMID: 25253969 PMCID: PMC4168102 DOI: 10.3748/wjg.v20.i35.12637] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/10/2014] [Accepted: 05/14/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To identify pharmaceuticals for the prophylaxis of anastomotic leakage (AL), we systematically reviewed studies on anastomosis repair after colorectal surgery.
METHODS: We searched PubMed and EMBASE for articles published between January 1975 and December 2012. We included studies in English with the primary purpose of promoting healing of anastomoses made in the colon or rectum under uncomplicated conditions. We excluded studies on adverse events from interventions, nutritional interventions or in situ physical supporting biomaterials. The primary outcome was biomechanical strength or AL. We performed meta-analyses on therapeutic agents investigated by three or more independent research groups using the same outcome. The DerSimonian-Laird method for random effects was applied with P < 0.05.
RESULTS: Of the 56 different therapeutic agents assessed, 7 met our inclusion criteria for the meta-analysis. The prostacyclin analog iloprost increased the weighted mean of the early bursting pressure of colonic anastomoses in male rats by 60 mmHg (95%CI: 30-89) vs the controls, and the immunosuppressant tacrolimus increased this value by 29 mmHg (95%CI: 4-53) vs the controls. Erythropoietin showed an enhancement of bursting pressure by 45 mmHg (95%CI: 14-76). The anabolic compound growth hormone augmented the anastomotic strength by 21 mmHg (95%CI: 7-35), possibly via the up-regulation of insulin-like growth factor-1, as this growth factor increased the bursting pressure by 61 mmHg (95%CI: 43-79) via increased collagen deposition. Hyperbaric oxygen therapy increased the bursting pressure by 24 mmHg (95%CI: 13-34). Broad-spectrum matrix metalloproteinase inhibitors increased the bursting pressure by 48 mmHg (95%CI: 31-66) on postoperative days 3-4. In the only human study, the AL incidence was not significantly reduced in the 103 colorectal patients treated with aprotinin (11.7%) compared with the 113 placebo-treated patients (9.7%).
CONCLUSION: This systematic review identified only one randomized clinical trial and seven therapeutic agents from pre-clinical models that could be explored further for the prophylaxis of AL after colorectal surgery.
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18
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Systemic treatment with erythropoietin protects the neurovascular unit in a rat model of retinal neurodegeneration. PLoS One 2014; 9:e102013. [PMID: 25013951 PMCID: PMC4094460 DOI: 10.1371/journal.pone.0102013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 06/12/2014] [Indexed: 12/14/2022] Open
Abstract
Rats expressing a transgenic polycystic kidney disease (PKD) gene develop photoreceptor degeneration and subsequent vasoregression, as well as activation of retinal microglia and macroglia. To target the whole neuroglialvascular unit, neuro- and vasoprotective Erythropoietin (EPO) was intraperitoneally injected into four –week old male heterozygous PKD rats three times a week at a dose of 256 IU/kg body weight. For comparison EPO-like peptide, lacking unwanted side effects of EPO treatment, was given five times a week at a dose of 10 µg/kg body weight. Matched EPO treated Sprague Dawley and water-injected PKD rats were held as controls. After four weeks of treatment the animals were sacrificed and analysis of the neurovascular morphology, glial cell activity and pAkt localization was performed. The number of endothelial cells and pericytes did not change after treatment with EPO or EPO-like peptide. There was a nonsignificant reduction of migrating pericytes by 23% and 49%, respectively. Formation of acellular capillaries was significantly reduced by 49% (p<0.001) or 40% (p<0.05). EPO-treatment protected against thinning of the central retina by 10% (p<0.05), a composite of an increase of the outer nuclear layer by 12% (p<0.01) and in the outer segments of photoreceptors by 26% (p<0.001). Quantification of cell nuclei revealed no difference. Microglial activity, shown by gene expression of CD74, decreased by 67% (p<0.01) after EPO and 36% (n.s.) after EPO-like peptide treatment. In conclusion, EPO safeguards the neuroglialvascular unit in a model of retinal neurodegeneration and secondary vasoregression. This finding strengthens EPO in its protective capability for the whole neuroglialvascular unit.
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Samillan V, Haider T, Vogel J, Leuenberger C, Brock M, Schwarzwald C, Gassmann M, Ostergaard L. Combination of erythropoietin and sildenafil can effectively attenuate hypoxia-induced pulmonary hypertension in mice. Pulm Circ 2014; 3:898-907. [PMID: 25006406 DOI: 10.1086/674758] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 08/22/2013] [Indexed: 12/12/2022] Open
Abstract
Pulmonary hypertension (PH) is an incurable disease that often leads to right ventricular hypertrophy and right heart failure. This study investigated single versus combined therapy with sildenafil and erythropoietin on hypoxia-induced pulmonary hypertension in mice. Mice were randomized into 5 groups and exposed to either hypoxia (10% oxygen) or normoxia for a total of 5 weeks. Hypoxic mice were treated with saline solution, erythropoietin (500 IU/kg 3 times weekly), sildenafil (10 mg/kg daily), or a combination of the two drugs for the last 2 weeks of hypoxic exposure. We measured right ventricular pressures using right heart catheterization, and the ventilatory response to hypoxia was recorded via whole-body plethysmography. Histological analyses were performed to elucidate changes in pulmonary morphology and appearance of right heart hypertrophy. Plasma levels of cardiotrophin-1 and atrial natriuretic peptide were quantified. Treatment with either erythropoietin or sildenafil alone lowered the hypoxia-induced increase of pulmonary pressure and reduced pulmonary edema formation, pulmonary vascular remodeling, and right ventricular hypertrophy. Notably, the combination of the two drugs had the most prominent effect. Changes in cardiotrophin-1 and atrial natriuretic protein levels confirmed these observations. The combination treatment with erythropoietin and sildenafil demonstrated an attenuation of the development of hypoxia-induced PH in mice that was superior to that observed for either drug when given alone.
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Affiliation(s)
- Victor Samillan
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Zurich Center for Integrative Human Physiology, Zurich, Switzerland ; Human Physiology Department, Medical School, Universidad Alas Peruanas, Lima, Peru
| | - Thomas Haider
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Zurich Center for Integrative Human Physiology, Zurich, Switzerland
| | - Johannes Vogel
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Zurich Center for Integrative Human Physiology, Zurich, Switzerland
| | - Caroline Leuenberger
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Institute of Human Movement Sciences and Sport, ETH Zurich, Zurich, Switzerland
| | - Matthias Brock
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Division of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Colin Schwarzwald
- Equine Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Max Gassmann
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Zurich Center for Integrative Human Physiology, Zurich, Switzerland ; Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Louise Ostergaard
- Institute for Veterinary Physiology, Vetsuisse Faculty, Zurich, Switzerland ; Zurich Center for Integrative Human Physiology, Zurich, Switzerland
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20
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Betsch M, Thelen S, Santak L, Herten M, Jungbluth P, Miersch D, Hakimi M, Wild M. The role of erythropoietin and bone marrow concentrate in the treatment of osteochondral defects in mini-pigs. PLoS One 2014; 9:e92766. [PMID: 24676029 PMCID: PMC3968023 DOI: 10.1371/journal.pone.0092766] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 02/26/2014] [Indexed: 12/02/2022] Open
Abstract
Background All available treatment options for osteochondral and chondral defects do not restore hyaline cartilage and are limited to decreasing associated pain, and maintaining or improving joint function. The purpose of this study was to evaluate the potential of erythropoietin (EPO) in combination with bone marrow aspiration concentrate (BMAC) in the treatment of osteochondral defects of mini-pigs. Methods 14 Goettinger mini-pigs, in which a 6×10 mm osteochondral defect in the medial femoral condyle of both knee joints was created, were randomized into four groups: biphasic scaffold alone, scaffold with EPO, scaffold with BMAC and scaffold in combination with EPO and BMAC. After 26 weeks all animals were euthanized and histological slides were evaluated using a modified ÓDriscoll Score. Results In the therapy groups, areas of chondrogenic tissue that contained collagen II were present. Adding EPO (p = 0.245) or BMAC (p = 0.099) alone to the scaffold led to a non-significant increase in the score compared to the control group. However, the combination of EPO and BMAC in the implanted scaffold showed a significant improvement (p = 0.02) in the histological score. Conclusion The results of our study show that in mini-pigs, the combination of EPO and BMAC leads to an enhanced osteochondral healing. However, additional research is necessary to further improve the repair tissue and to define the role of MSCs and EPO in cartilage repair.
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Affiliation(s)
- Marcel Betsch
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Simon Thelen
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
- * E-mail:
| | - Laila Santak
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Monika Herten
- Department of and Endovascular Surgery, University Hospital Muenster, Muenster, Germany
| | - Pascal Jungbluth
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Daniel Miersch
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Mohssen Hakimi
- Department of Trauma and Hand Surgery, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Michael Wild
- Department of Trauma and Orthopaedic Surgery, Klinikum Darmstadt, Darmstadt, Germany
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21
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Morais C, Small DM, Vesey DA, Martin J, Johnson DW, Gobe GC. Fibronectin and transforming growth factor beta contribute to erythropoietin resistance and maladaptive cardiac hypertrophy. Biochem Biophys Res Commun 2014; 444:332-7. [PMID: 24462876 DOI: 10.1016/j.bbrc.2014.01.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
Abstract
The use of recombinant human erythropoietin (rhEPO) to promote repair and minimize cardiac hypertrophy after myocardial infarction has had disappointing outcomes in clinical trials. We hypothesized that the beneficial non-hematopoietic effects of rhEPO against cardiac hypertrophy could be offset by the molecular changes initiated by rhEPO itself, leading to rhEPO resistance or maladaptive hypertrophy. This hypothesis was investigated using an isoproterenol-induced model of myocardial infarct and cardiac remodelling with emphasis on hypertrophy. In h9c2 cardiomyocytes, rhEPO decreased isoproterenol-induced hypertrophy, and the expression of the pro-fibrotic factors fibronectin, alpha smooth muscle actin and transforming growth factor beta-1 (TGF-β1). In contrast, by itself, rhEPO increased the expression of fibronectin and TGF-β1. Exogenous TGF-β1 induced a significant increase in hypertrophy, which was further potentiated by rhEPO. Exogenous fibronectin not only induced hypertrophy of cardiomyocytes, but also conferred resistance to rhEPO treatment. Based on these findings we propose that the outcome of rhEPO treatment for myocardial infarction is determined by the baseline concentrations of fibronectin and TGF-β1. If endogenous fibronectin or TGF-β levels are above a certain threshold, they could cause resistance to rhEPO therapy and enhancement of cardiac hypertrophy, respectively, leading to maladaptive hypertrophy.
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Affiliation(s)
- Christudas Morais
- Centre for Kidney Disease Research, School of Medicine, The University of Queensland at Translational Research Institute, Brisbane, Queensland 4102, Australia.
| | - David M Small
- Centre for Kidney Disease Research, School of Medicine, The University of Queensland at Translational Research Institute, Brisbane, Queensland 4102, Australia.
| | - David A Vesey
- Centre for Kidney Disease Research, School of Medicine, The University of Queensland at Translational Research Institute, Brisbane, Queensland 4102, Australia; Department of Renal Medicine, The University of Queensland at Princess Alexandra Hospital, Brisbane, Queensland 4102, Australia.
| | - Jennifer Martin
- School of Medicine, The University of Queensland, Brisbane, Queensland 4102, Australia.
| | - David W Johnson
- Centre for Kidney Disease Research, School of Medicine, The University of Queensland at Translational Research Institute, Brisbane, Queensland 4102, Australia; Department of Renal Medicine, The University of Queensland at Princess Alexandra Hospital, Brisbane, Queensland 4102, Australia; School of Medicine, The University of Queensland, Brisbane, Queensland 4102, Australia.
| | - Glenda C Gobe
- Centre for Kidney Disease Research, School of Medicine, The University of Queensland at Translational Research Institute, Brisbane, Queensland 4102, Australia.
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22
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Forristal CE, Levesque JP. Targeting the hypoxia-sensing pathway in clinical hematology. Stem Cells Transl Med 2013; 3:135-40. [PMID: 24371328 DOI: 10.5966/sctm.2013-0134] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Hypoxia-inducible factors (HIFs) are oxygen-sensitive transcription factors regulated by oxygen-dependent prolyl hydroxylase domain (PHD) enzymes and are key to cell adaptation to low oxygen. The hematopoietic stem cell (HSC) niche in the bone marrow is highly heterogeneous in terms of microvasculature and thus oxygen concentration. The importance of hypoxia and HIFs in the hematopoietic environment is becoming increasingly recognized. Many small compounds that inhibit PHDs have been developed, enabling HIFs to be pharmacologically stabilized in an oxygen-independent manner. The use of PHD inhibitors for therapeutic intervention in hematopoiesis is being increasingly investigated. PHD inhibitors are well established to increase erythropoietin production to correct anemia in hemodialysis patients. Pharmacological stabilization of HIF-1α protein with PHD inhibitors is also emerging as an important regulator of HSC proliferation and self-renewal. Administration of PHD inhibitors increases quiescence and decreases proliferation of HSCs in the bone marrow in vivo, thereby protecting them from high doses of irradiation and accelerating hematological recovery. Recent findings also show that stabilization of HIF-1α increases mobilization of HSCs in response to granulocyte colony-stimulating factor and plerixafor, suggesting that PHD inhibitors could be useful agents to increase mobilization success in patients requiring transplantation. These findings highlight the importance of the hypoxia-sensing pathway and HIFs in clinical hematology.
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Affiliation(s)
- Catherine E Forristal
- Stem Cell Biology Group, Mater Research Institute-University of Queensland, Woolloongabba, Queensland, Australia
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Roubille F, Prunier F, Barrère-Lemaire S, Leclercq F, Piot C, Kritikou EA, Rhéaume E, Busseuil D, Tardif JC. What is the Role of Erythropoietin in Acute Myocardial Infarct? Bridging the Gap Between Experimental Models and Clinical Trials. Cardiovasc Drugs Ther 2013; 27:315-31. [DOI: 10.1007/s10557-013-6461-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Alternative erythropoietin-mediated signaling prevents secondary microvascular thrombosis and inflammation within cutaneous burns. Proc Natl Acad Sci U S A 2013; 110:3513-8. [PMID: 23401545 DOI: 10.1073/pnas.1214099110] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Alternate erythropoietin (EPO)-mediated signaling via the heteromeric receptor composed of the EPO receptor and the β-common receptor (CD131) exerts the tissue-protective actions of EPO in various types of injuries. Herein we investigated the effects of the EPO derivative helix beta surface peptide (synonym: ARA290), which specifically triggers alternate EPO-mediated signaling, but does not bind the erythropoietic EPO receptor homodimer, on the progression of secondary tissue damage following cutaneous burns. For this purpose, a deep partial thickness cutaneous burn injury was applied on the back of mice, followed by systemic administration of vehicle or ARA290 at 1, 12, and 24 h postburn. With vehicle-only treatment, wounds exhibited secondary microvascular thrombosis within 24 h postburn, and subsequent necrosis of the surrounding tissue, thus converting to a full-thickness injury within 48 h. On the other hand, when ARA290 was systemically administered, patency of the microvasculature was maintained. Furthermore, ARA290 mitigated the innate inflammatory response, most notably tumor necrosis factor-alpha-mediated signaling. These findings correlated with long-term recovery of initially injured yet viable tissue components. In conclusion, ARA290 may be a promising therapeutic approach to prevent the conversion of partial- to full-thickness burn injuries. In a clinical setting, the decrease in burn depth and area would likely reduce the necessity for extensive surgical debridement as well as secondary wound closure by means of skin grafting. This use of ARA290 is consistent with its tissue-protective properties previously reported in other models of injury, such as myocardial infarction and hemorrhagic shock.
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