151
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Abazari M, Ghaffari A, Rashidzadeh H, Badeleh SM, Maleki Y. A Systematic Review on Classification, Identification, and Healing Process of Burn Wound Healing. INT J LOW EXTR WOUND 2020; 21:18-30. [PMID: 32524874 DOI: 10.1177/1534734620924857] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Because of the intrinsic complexity, the classification of wounds is important for the diagnosis, management, and choosing the correct treatment based on wound type. Generally, burn injuries are classified as a class of wounds in which injury is caused by heat, cold, electricity, chemicals, friction, or radiation. On the other hand, wound healing is a complex process, and understanding the biological trend of this process and differences in the healing process of different wounds could reduce the possible risk in many cases and greatly reduce the future damage to the injured tissue and other organs. The aim of this review is to provide a general perspective for the burn wound location among the other types of injuries and summarizing as well as highlighting the differences of these types of wounds with emphasizing on factors affecting thereof.
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Affiliation(s)
| | | | | | | | - Yaser Maleki
- Institute for Advanced Studies in Basic Sciences. Zanjan, Iran
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152
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Kostyuk AI, Kokova AD, Podgorny OV, Kelmanson IV, Fetisova ES, Belousov VV, Bilan DS. Genetically Encoded Tools for Research of Cell Signaling and Metabolism under Brain Hypoxia. Antioxidants (Basel) 2020; 9:E516. [PMID: 32545356 PMCID: PMC7346190 DOI: 10.3390/antiox9060516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 02/08/2023] Open
Abstract
Hypoxia is characterized by low oxygen content in the tissues. The central nervous system (CNS) is highly vulnerable to a lack of oxygen. Prolonged hypoxia leads to the death of brain cells, which underlies the development of many pathological conditions. Despite the relevance of the topic, different approaches used to study the molecular mechanisms of hypoxia have many limitations. One promising lead is the use of various genetically encoded tools that allow for the observation of intracellular parameters in living systems. In the first part of this review, we provide the classification of oxygen/hypoxia reporters as well as describe other genetically encoded reporters for various metabolic and redox parameters that could be implemented in hypoxia studies. In the second part, we discuss the advantages and disadvantages of the primary hypoxia model systems and highlight inspiring examples of research in which these experimental settings were combined with genetically encoded reporters.
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Affiliation(s)
- Alexander I. Kostyuk
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Aleksandra D. Kokova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Oleg V. Podgorny
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- Koltzov Institute of Developmental Biology, 119334 Moscow, Russia
| | - Ilya V. Kelmanson
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Elena S. Fetisova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- Faculty of Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Vsevolod V. Belousov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
- Institute for Cardiovascular Physiology, Georg August University Göttingen, D-37073 Göttingen, Germany
- Federal Center for Cerebrovascular Pathology and Stroke, 117997 Moscow, Russia
| | - Dmitry S. Bilan
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117997 Moscow, Russia; (A.I.K.); (A.D.K.); (O.V.P.); (I.V.K.); (E.S.F.); (V.V.B.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
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153
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Zehra M, Zubairi W, Hasan A, Butt H, Ramzan A, Azam M, Mehmood A, Falahati M, Chaudhry AA, Rehman IU, Yar M. Oxygen Generating Polymeric Nano Fibers That Stimulate Angiogenesis and Show Efficient Wound Healing in a Diabetic Wound Model. Int J Nanomedicine 2020; 15:3511-3522. [PMID: 32547010 PMCID: PMC7244241 DOI: 10.2147/ijn.s248911] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
Introduction Diabetic wounds are challenging to treat due to a wide range of pathophysiological changes. Hypoxia is one of the predominant contributing factors of poor vascularization and chronicity in diabetic wounds. This study was designed to develop polycaprolactone (PCL)-based oxygen-releasing electrospun wound dressings and evaluate their efficacy for improved full thickness wound healing in diabetic rats. Methods PCL-based oxygen releasing wound dressings were made using electrospinning technology. The developed dressings were characterized in terms of physical as well as biological properties both in vitro and in vivo. E-spun nanofibrous dressings were physically characterized with scanning electron microscopy, Fourier-transform infrared spectroscopy, and Energy-dispersive X-ray spectroscopy. To study the likely impact of the fabricated wound dressings in hypoxic conditions, HIF-1α expression analysis was carried out both at gene and protein levels. Wound dressings were further evaluated for their healing potential for extensive wounds in diabetic rat models. Results The experimental results showed that the developed dressings were capable of continuously generating oxygen for up to 10 days. Cell studies further confirmed pronounced expression of HIF-1α at gene and protein levels in cells seeded on PCL-sodium percarbonate (SPC) and PCL scaffolds compared with the cells cultured on a tissue culture plate. Chorioallantoic membrane assay revealed the supportive role of oxygen releasing dressings on angiogenesis compared to the control group. Histological assessment of the regenerated skin tissues proved that full thickness wounds covered with SPC loaded PCL dressings had a comparatively better vascularized and compact extracellular matrix with completely covered thick epithelium. Discussion The developed oxygen generating polymeric nanofibrous wound dressings could potentially be used as an envisioned approach for the efficient recovery of chronic diabetic wounds.
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Affiliation(s)
- Mubashra Zehra
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Waliya Zubairi
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar.,Biomedical Research Center, Qatar University, Doha 2713, Qatar
| | - Hira Butt
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Amna Ramzan
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Maryam Azam
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Azra Mehmood
- National Center of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore 53700, Pakistan
| | - Mojtaba Falahati
- Department of Nanotechnology, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Ihtesham Ur Rehman
- Engineering Department, Faculty of Science and Technology, Lancaster University, Lancaster LA1 4YW, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
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154
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Loh C, Tan QY, Eng DLK, Walsh SR, Chong TT, Tang TY. Granulox-The Use of Topical Hemoglobin to Aid Wound Healing: A Literature Review and Case Series From Singapore. INT J LOW EXTR WOUND 2020; 20:88-97. [PMID: 32349571 DOI: 10.1177/1534734620910318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chronic wounds are an increasing burden on health care globally, and tissue hypoxia is a common issue in such wounds. Granulox (SastoMed GmbH, Georgsmarienhütte, Germany) is designed to provide wound bases with supplemental oxygen through facilitated diffusion and aid the physiological wound-healing process. It is a topical hemoglobin wound spray that is applied after wound cleaning and debridement to ensure continuous oxygen supplementation for up to 72 hours. Compared with other forms of topical oxygen therapy that require portable devices, Granulox is a spray-on application and the patient experience is similar to the use of a conventional dressing. Current clinical evidence suggests that Granulox aids with both wound healing and with symptom relief in chronic wounds, but current literature is limited by small study populations and further larger studies are required.
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Affiliation(s)
- Clement Loh
- Singapore General Hospital, Singapore, Singapore
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155
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Duscher D, Maan ZN, Hu MS, Thor D. A single-center blinded randomized clinical trial to evaluate the anti-aging effects of a novel HSF™-based skin care formulation. J Cosmet Dermatol 2020; 19:2936-2945. [PMID: 32306525 DOI: 10.1111/jocd.13356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/09/2020] [Accepted: 02/17/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Similar to chronic wounds, skin aging is characterized by dysfunction of key cellular regulatory pathways. The hypoxia-inducible factor-1 alpha (HIF-1α) pathway was linked to both conditions. Recent evidence suggests that modulating this pathway can rejuvenate aged fibroblasts and improve skin regeneration. Here, we describe the application of a novel HIF stimulating factor (HSF™)-based formulation for skin rejuvenation. METHODS Over a period of 6 weeks using a split-face study design, the effects on skin surface profile, skin moisture, and transepidermal water loss were determined in 32 female subjects (mean age 54, range 32-67 years) by Fast Optical in vivo Topometry of Human Skin (FOITSHD ), Corneometer, and Tewameter measurements. In addition, a photo documentation was performed for assessment by an expert panel and a survey regarding subject satisfaction was conducted. RESULTS No negative skin reactions of dermatological relevance were documented for the test product. A significant reduction in skin roughness could be demonstrated. The clinical evaluation of the images using a validated method confirmed significant improvement of wrinkles, in particular of fine wrinkles, lip wrinkles, and crow's feet. A significant skin moisturizing effect was detected while skin barrier function was preserved. The HSF™-based skin care formulation resulted in a self-reported 94% satisfaction rate. CONCLUSION With no negative skin reactions and highly significant effects on skin roughness, wrinkles, and moisturization, the HSF™-based skin care formulation achieved very satisfying outcomes in this clinical trial. Given the favorable results, this approach represents a promising innovation in aesthetic and regenerative medicine.
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Affiliation(s)
- Dominik Duscher
- Department of Plastic and Hand Surgery, Technical University Munich, Munich, Germany.,Section of Plastic Surgery, Johannes Kepler University Linz, Linz, Austria.,Tomorrowlabs GmbH, Wien, Austria
| | - Zeshaan N Maan
- Hagey Laboratory for Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael S Hu
- Department for Plastic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Dominik Thor
- College of Pharmacy, University of Florida, Gainesville, FL, USA.,Tomorrowlabs GmbH, Wien, Austria
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156
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Xu J, Liu X, Zhao F, Zhang Y, Wang Z. HIF1α overexpression enhances diabetic wound closure in high glucose and low oxygen conditions by promoting adipose-derived stem cell paracrine function and survival. Stem Cell Res Ther 2020; 11:148. [PMID: 32248837 PMCID: PMC7132964 DOI: 10.1186/s13287-020-01654-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 03/11/2020] [Accepted: 03/17/2020] [Indexed: 12/31/2022] Open
Abstract
Background Adipose-derived stem cell (ADSC) transplantation is a promising strategy to promote wound healing because of the paracrine function of stem cells. However, glucose-associated effects on stem cell paracrine function and survival contribute to impaired wound closure in patients with diabetes, limiting the efficacy of ADSC transplantation. Hypoxia-inducible factor (HIF)1α plays important roles in wound healing, and in this study, we investigated the effects of HIF1α overexpression on ADSCs in high glucose and low oxygen conditions. Methods Adipose samples were obtained from BALB/C mice, and ADSCs were cultured in vitro by digestion. Control and HIF1α-overexpressing ADSCs were induced by transduction. The mRNA and protein levels of angiogenic growth factors in control and HIF1α-overexpressing ADSCs under high glucose and low oxygen conditions were analyzed by quantitative reverse transcription-polymerase chain reaction and western blotting. The effects of ADSC HIF1α overexpression on the proliferation and migration of mouse aortic endothelial cells (MAECs) under high glucose were evaluated using an in vitro coculture model. Intracellular reactive oxygen species (ROS) and 8-hydroxydeoxyguanosine (8-OHdG) levels in ADSCs were observed using 2,7-dichlorodihydrofluorescein diacetate staining and enzyme-linked immunosorbent assays, respectively. Apoptosis and cell cycle analysis assays were performed by flow cytometry. An in vivo full-thickness skin defect mouse model was used to evaluate the effects of transplanted ADSCs on diabetic wound closure. Results In vitro, HIF1α overexpression in ADSCs significantly increased the expression of vascular endothelial growth factor A, fibroblast growth factor 2, and C-X-C motif chemokine ligand 12, which were inhibited by high glucose. HIF1α overexpression in ADSCs alleviated high glucose-induced defects in MAEC proliferation and migration and significantly suppressed ADSC ROS and 8-OHdG levels, thereby decreasing apoptosis and enhancing survival. In vivo, HIF1α overexpression in ADSCs prior to transplantation significantly enhanced angiogenic growth factor expression, promoting wound closure in diabetic mice. Conclusions HIF1α overexpression in ADSCs efficiently alleviates high glucose-induced paracrine dysfunction, decreases oxidative stress and subsequent DNA damage, improves viability, and enhances the therapeutic effects of ADSCs on diabetic wound healing.
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Affiliation(s)
- Jin Xu
- Department of Surgery, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, China
| | - Xiaoyu Liu
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, China
| | - Feng Zhao
- Department of Stem Cells and Regenerative Medicine, Shenyang Key Laboratory for Stem Cells and Regenerative Medicine, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, No. 77 Puhe Street, Shenbei New District, Shenyang, 110122, China
| | - Ying Zhang
- Department of Pathology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, China
| | - Zhe Wang
- Department of Pathology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Heping District, Shenyang, 110004, China.
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157
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Khan MA, Shamma T, Kazmi S, Altuhami A, Ahmed HA, Assiri AM, Broering DC. Hypoxia-induced complement dysregulation is associated with microvascular impairments in mouse tracheal transplants. J Transl Med 2020; 18:147. [PMID: 32234039 PMCID: PMC7110829 DOI: 10.1186/s12967-020-02305-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 03/16/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Complement Regulatory Proteins (CRPs), especially CD55 primarily negate complement factor 3-mediated injuries and maintain tissue homeostasis during complement cascade activation. Complement activation and regulation during alloimmune inflammation contribute to allograft injury and therefore we proposed to investigate a crucial pathological link between vascular expression of CD55, active-C3, T cell immunity and associated microvascular tissue injuries during allograft rejection. METHODS Balb/c→C57BL/6 allografts were examined for microvascular deposition of CD55, C3d, T cells, and associated tissue microvascular impairments during rejection in mouse orthotopic tracheal transplantation. RESULTS Our findings demonstrated that hypoxia-induced early activation of HIF-1α favors a cell-mediated inflammation (CD4+, CD8+, and associated proinflammatory cytokines, IL-2 and TNF-α), which proportionally triggers the downregulation of CRP-CD55, and thereby augments the uncontrolled release of active-C3, and Caspase-3 deposition on CD31+ graft vascular endothelial cells. These molecular changes are pathologically associated with microvascular deterioration (low tissue O2 and Blood flow) and subsequent airway epithelial injuries of rejecting allografts as compared to non-rejecting syngrafts. CONCLUSION Together, these findings establish a pathological correlation between complement dysregulation, T cell immunity, and microvascular associated injuries during alloimmune inflammation in transplantation.
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Affiliation(s)
- Mohammad Afzal Khan
- Organ Transplant Research Section, Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia.
| | - Talal Shamma
- Organ Transplant Research Section, Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Shadab Kazmi
- Organ Transplant Research Section, Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Altuhami
- Organ Transplant Research Section, Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Hala Abdalrahman Ahmed
- Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Mohammed Assiri
- Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia.,College of Medicine, Alfaisal University, Riyadh, Kingdom of Saudi Arabia.,Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia
| | - Dieter Clemens Broering
- Organ Transplant Research Section, Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
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158
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Hopfner U, Maan ZN, Hu MS, Aitzetmüller MM, Zaussinger M, Kirsch M, Machens HG, Duscher D. Deferoxamine enhances the regenerative potential of diabetic Adipose Derived Stem Cells. J Plast Reconstr Aesthet Surg 2020; 73:1738-1746. [PMID: 32418841 DOI: 10.1016/j.bjps.2020.02.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 12/05/2019] [Accepted: 02/16/2020] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Diabetes mellitus remains a significant public health problem, consuming over $400 billion every year. While Diabetes itself can be controlled effectively, impaired wound healing still occurs frequently in diabetic patients. Adipose-derived mesenchymal stem cells (ASCs) provide an especially appealing source for diabetic wound cell therapy. With autologous approaches, the functionality of ASCs largely underlie patient-dependent factors. Diabetes is a significant diminishing factor of MSC functionality. Here, we explore a novel strategy to enhance diabetic ASC functionality through deferoxamine (DFO) preconditioning. MATERIAL AND METHODS Human diabetic ASCs have been preconditioned with 150 µM and 300 µM DFO in vitro and analyzed for regenerative cytokine expression. Murine diabetic ASCs have been preconditioned with 150 µM DFO examined for their in vitro and in vivo vasculogenic capacity in Matrigel assays. Additionally, a diabetic murine wound healing model has been performed to assess the regenerative capacity of preconditioned cells. RESULTS DFO preconditioning enhances the VEGF expression of human diabetic ASCs through hypoxia-inducible factor upregulation. The use of 150 µM of DFO was an optimal concentration to induce regenerative effects. The vasculogenic potential of preconditioned diabetic ASCs is significantly greater in vitro and in vivo. The enhanced regenerative functionality of DFO preconditioned ASCs was further confirmed in a model of diabetic murine wound healing. CONCLUSION These results demonstrate that DFO significantly induced the upregulation of hypoxia-inducible factor-1 alpha and VEGF in diabetic ASCs and showed efficacy in the treatment of diabetes-associated deficits of wound healing. The favorable status of DFO as a small molecule drug approved since decades for multiple indications makes this approach highly translatable.
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Affiliation(s)
- Ursula Hopfner
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Zeshaan N Maan
- Hagey Laboratory for Pediatric Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Michael S Hu
- Department for Plastic Surgery, University of Pittsburgh, Pennsylvania, USA
| | - Matthias M Aitzetmüller
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Maximilian Zaussinger
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Manuela Kirsch
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Hans-Günther Machens
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Dominik Duscher
- Department for Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Germany; Division for Plastic and Reconstructive Surgery, Kepler University Hospital, Linz, Austria.
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159
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Houschyar KS, Borrelli MR, Tapking C, Popp D, Puladi B, Ooms M, Chelliah MP, Rein S, Pförringer D, Thor D, Reumuth G, Wallner C, Branski LK, Siemers F, Grieb G, Lehnhardt M, Yazdi AS, Maan ZN, Duscher D. Molecular Mechanisms of Hair Growth and Regeneration: Current Understanding and Novel Paradigms. Dermatology 2020; 236:271-280. [PMID: 32163945 DOI: 10.1159/000506155] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/27/2020] [Indexed: 11/19/2022] Open
Abstract
Hair is a defining feature of mammals and has critical functions, including protection, production of sebum, apocrine sweat and pheromones, social and sexual interactions, thermoregulation, and provision of stem cells for skin homeostasis, regeneration, and repair. The hair follicle (HF) is considered a "mini-organ," consisting of intricate and well-organized structures which originate from HF stem and progenitor cells. Dermal papilla cells are the main components of the mesenchymal compartments in the hair bulb and are instrumental in generating signals to regulate the behavior of neighboring epithelial cells during the hair cycle. Mesenchymal-epithelial interactions within the dermal papilla niche drive HF embryonic development as well as the postnatal hair growth and regeneration cycle. This review summarizes the current understanding of HF development, repair, and regeneration, with special focus on cell signaling pathways governing these processes. In particular, we discuss emerging paradigms of molecular signaling governing the dermal papilla-epithelial cellular interactions during hair growth and maintenance and the recent progress made towards tissue engineering of human hair follicles.
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Affiliation(s)
- Khosrow Siamak Houschyar
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Mimi R Borrelli
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, California, USA
| | - Christian Tapking
- Department of Surgery, Shriners Hospitals for Children-Galveston, University of Texas Medical Branch, Galveston, Texas, USA.,Department of Hand, Plastic and Reconstructive Surgery, Burn Trauma Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Heidelberg, Germany
| | - Daniel Popp
- Department of Surgery, Shriners Hospitals for Children-Galveston, University of Texas Medical Branch, Galveston, Texas, USA.,Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Behrus Puladi
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH, Aachen, Germany
| | - Mark Ooms
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH, Aachen, Germany
| | - Malcolm P Chelliah
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, California, USA
| | - Susanne Rein
- Department of Plastic and Hand Surgery, Burn Center, Clinic St. Georg, Leipzig, Germany
| | - Dominik Pförringer
- Clinic and Policlinic of Trauma Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Dominik Thor
- College of Pharmacy, University of Florida Gainesville, Gainesville, Florida, USA
| | - Georg Reumuth
- Department of Plastic and Hand Surgery, Burn Unit, Trauma Center Bergmannstrost Halle, Halle, Germany
| | - Christoph Wallner
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Ludwik K Branski
- Department of Surgery, Shriners Hospitals for Children-Galveston, University of Texas Medical Branch, Galveston, Texas, USA
| | - Frank Siemers
- Department of Plastic and Hand Surgery, Burn Unit, Trauma Center Bergmannstrost Halle, Halle, Germany
| | - Gerrit Grieb
- Department of Plastic Surgery and Hand Surgery, Gemeinschaftskrankenhaus Havelhoehe, Teaching Hospital of the Charité Berlin, Berlin, Germany
| | - Marcus Lehnhardt
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Amir S Yazdi
- Department of Dermatology and Allergology, University Hospital Aachen, Aachen, Germany
| | - Zeshaan N Maan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, California, USA
| | - Dominik Duscher
- Department of Plastic Surgery and Hand Surgery, Technical University Munich, Munich, Germany,
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160
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Bonham CA, Kuehlmann B, Gurtner GC. Impaired Neovascularization in Aging. Adv Wound Care (New Rochelle) 2020; 9:111-126. [PMID: 31993253 DOI: 10.1089/wound.2018.0912] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/18/2018] [Indexed: 12/12/2022] Open
Abstract
Significance: The skin undergoes an inevitable degeneration as an individual ages. As intrinsic and extrinsic factors degrade the structural integrity of the skin, it experiences a critical loss of function and homeostatic stability. Thus, aged skin becomes increasingly susceptible to injury and displays a prolonged healing process. Recent Advances: Several studies have found significant differences during wound healing between younger and older individuals. The hypoxia-inducible factor 1-alpha (HIF-1α) signaling pathway has recently been identified as a major player in wound healing. Hypoxia-inducible factors (HIFs) are pleiotropic key regulators of oxygen homeostasis. HIF-1α is essential to neovascularization through its regulation of cytokines, such as SDF-1α (stromal cell-derived factor 1-alpha) and has been shown to upregulate the expression of genes important for a hypoxic response. Prolyl hydroxylase domain proteins (PHDs) and factor inhibiting HIF effectively block HIF-1α signaling in normoxia through hydroxylation, preventing the signaling cascade from activating, leading to impaired tissue survival. Critical Issues: Aged wounds are a major clinical burden, resisting modern treatment and costing millions in health care each year. At the molecular level, aging has been shown to interfere with PHD regulation, which in turn prevents HIF-1α from activating gene expression, ultimately leading to impaired healing. Other studies have identified loss of function in cells during aging, impeding processes such as angiogenesis. Future Directions: An improved understanding of the regulation of molecular mediators, such as HIF-1α and PHD, will allow for manipulation of the various factors underlying delayed wound healing in the aged. The findings highlighted in this may facilitate the development of potential therapeutic approaches involved in the alteration of cellular dynamics and aging.
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Affiliation(s)
- Clark A. Bonham
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University, Stanford, California
| | - Britta Kuehlmann
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University, Stanford, California
- Center for Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Regensburg and Caritas Hospital St. Josef, Regensburg, Germany
| | - Geoffrey C. Gurtner
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University, Stanford, California
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161
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Kakkad S, Krishnamachary B, Jacob D, Pacheco-Torres J, Goggins E, Bharti SK, Penet MF, Bhujwalla ZM. Molecular and functional imaging insights into the role of hypoxia in cancer aggression. Cancer Metastasis Rev 2020; 38:51-64. [PMID: 30840168 DOI: 10.1007/s10555-019-09788-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hypoxia in cancers has evoked significant interest since 1955 when Thomlinson and Gray postulated the presence of hypoxia in human lung cancers, based on the observation of necrosis occurring at the diffusion limit of oxygen from the nearest blood vessel, and identified the implication of these observations for radiation therapy. Coupled with discoveries in 1953 by Gray and others that anoxic cells were resistant to radiation damage, these observations have led to an entire field of research focused on exploiting oxygenation and hypoxia to improve the outcome of radiation therapy. Almost 65 years later, tumor heterogeneity of nearly every parameter measured including tumor oxygenation, and the dynamic landscape of cancers and their microenvironments are clearly evident, providing a strong rationale for cancer personalized medicine. Since hypoxia is a major cause of extracellular acidosis in tumors, here, we have focused on the applications of imaging to understand the effects of hypoxia in tumors and to target hypoxia in theranostic strategies. Molecular and functional imaging have critically important roles to play in personalized medicine through the detection of hypoxia, both spatially and temporally, and by providing new understanding of the role of hypoxia in cancer aggressiveness. With the discovery of the hypoxia-inducible factor (HIF), the intervening years have also seen significant progress in understanding the transcriptional regulation of hypoxia-induced genes. These advances have provided the ability to silence HIF and understand the associated molecular and functional consequences to expand our understanding of hypoxia and its role in cancer aggressiveness. Most recently, the development of hypoxia-based theranostic strategies that combine detection and therapy are further establishing imaging-based treatment strategies for precision medicine of cancer.
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Affiliation(s)
- Samata Kakkad
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Balaji Krishnamachary
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Desmond Jacob
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Jesus Pacheco-Torres
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Eibhlin Goggins
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Santosh Kumar Bharti
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
| | - Marie-France Penet
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA
- Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Zaver M Bhujwalla
- Division of Cancer Imaging Research, The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Rm 208C Traylor Building, Baltimore, MD, 21205, USA.
- Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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162
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The Pathogenesis of Adenomyosis vis-à-vis Endometriosis. J Clin Med 2020; 9:jcm9020485. [PMID: 32050720 PMCID: PMC7073526 DOI: 10.3390/jcm9020485] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/13/2022] Open
Abstract
Adenomyosis is used to be called endometriosis interna, and deep endometriosis is now called adenomyosis externa. Thus, there is a question as to whether adenomyosis is simply endometriosis of the uterus, either from the perspective of pathogenesis or pathophysiology. In this manuscript, a comprehensive review was performed with a literature search using PubMed for all publications in English, related to adenomyosis and endometriosis, from inception to June 20, 2019. In addition, two prevailing theories, i.e., invagination—based on tissue injury and repair (TIAR) hypothesis—and metaplasia, on adenomyosis pathogenesis, are briefly overviewed and then critically scrutinized. Both theories have apparent limitations, i.e., difficulty in falsification, explaining existing data, and making useful predictions. Based on the current understanding of wound healing, a new hypothesis, called endometrial-myometrial interface disruption (EMID), is proposed to account for adenomyosis resulting from iatrogenic trauma to EMI. The EMID hypothesis not only highlights the more salient feature, i.e., hypoxia, at the wounding site, but also incorporates epithelial mesenchymal transition, recruitment of bone-marrow-derived stem cells, and enhanced survival and dissemination of endometrial cells dispersed and displaced due to iatrogenic procedures. More importantly, the EMID hypothesis predicts that the risk of adenomyosis can be reduced if certain perioperative interventions are performed. Consequently, from a pathogenic standpoint, adenomyosis is not simply endometriosis of the uterus, and, as such, may call for interventional procedures that are somewhat different from those for endometriosis to achieve the best results.
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163
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Valachova K, Svik K, Biro C, Soltes L. Skin wound healing with composite biomembranes loaded by tiopronin or captopril. J Biotechnol 2020; 310:49-53. [PMID: 32027945 DOI: 10.1016/j.jbiotec.2020.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/21/2020] [Accepted: 02/01/2020] [Indexed: 12/26/2022]
Abstract
Novel wound dressings composed of chitosan (Ch) and hyaluronan (HA) loaded with tiopronin or captopril as antiinflammatory drugs were prepared. Composite biomembranes were examined in skin wounds of ischemic rabbits with the aim to accelerate the process of healing. The results proved that the biomembranes composed of Ch/HA/tiopronin or Ch/HA/captopril facilitated healing of skin wounds compared to untreated animals and animals treated with Ch/HA membranes. These results were confirmed by histology. Cu(II) ions and ascorbate-induced high-molar-mass HA degradation by means of rotational viscometry was performed and the ability of the both drugs to scavenge reactive oxygen species was evaluated. The results showed that captopril as well as tiopronin decreased the rate of HA degradation exclusively at higher concentrations.
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Affiliation(s)
- Katarina Valachova
- Centre of Experimental Medicine (CEM), Institute of Experimental Pharmacology and Toxicology, Bratislava, Slovakia.
| | - Karol Svik
- Centre of Experimental Medicine (CEM), Institute of Experimental Pharmacology and Toxicology, Bratislava, Slovakia
| | - Csaba Biro
- St. Elizabeth Cancer Institute Hospital, Department of Pathology, Bratislava, Slovakia
| | - Ladislav Soltes
- Centre of Experimental Medicine (CEM), Institute of Experimental Pharmacology and Toxicology, Bratislava, Slovakia
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164
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Madan E, Parker TM, Pelham CJ, Palma AM, Peixoto ML, Nagane M, Chandaria A, Tomás AR, Canas-Marques R, Henriques V, Galzerano A, Cabral-Teixeira J, Selvendiran K, Kuppusamy P, Carvalho C, Beltran A, Moreno E, Pati UK, Gogna R. HIF-transcribed p53 chaperones HIF-1α. Nucleic Acids Res 2019; 47:10212-10234. [PMID: 31538203 PMCID: PMC6821315 DOI: 10.1093/nar/gkz766] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 08/14/2019] [Accepted: 09/02/2019] [Indexed: 02/06/2023] Open
Abstract
Chronic hypoxia is associated with a variety of physiological conditions such as rheumatoid arthritis, ischemia/reperfusion injury, stroke, diabetic vasculopathy, epilepsy and cancer. At the molecular level, hypoxia manifests its effects via activation of HIF-dependent transcription. On the other hand, an important transcription factor p53, which controls a myriad of biological functions, is rendered transcriptionally inactive under hypoxic conditions. p53 and HIF-1α are known to share a mysterious relationship and play an ambiguous role in the regulation of hypoxia-induced cellular changes. Here we demonstrate a novel pathway where HIF-1α transcriptionally upregulates both WT and MT p53 by binding to five response elements in p53 promoter. In hypoxic cells, this HIF-1α-induced p53 is transcriptionally inefficient but is abundantly available for protein-protein interactions. Further, both WT and MT p53 proteins bind and chaperone HIF-1α to stabilize its binding at its downstream DNA response elements. This p53-induced chaperoning of HIF-1α increases synthesis of HIF-regulated genes and thus the efficiency of hypoxia-induced molecular changes. This basic biology finding has important implications not only in the design of anti-cancer strategies but also for other physiological conditions where hypoxia results in disease manifestation.
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Affiliation(s)
- Esha Madan
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Taylor M Parker
- Department of Surgery, Simon Cancer Research Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Christopher J Pelham
- Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO 63110, USA
| | - Antonio M Palma
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Maria L Peixoto
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Masaki Nagane
- Department of Biochemistry, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Aliya Chandaria
- Biosciences unit, College of Life and Environmental Sciences, University of Exeter, Stocker Road Exeter EX4 4QD, UK
| | - Ana R Tomás
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | | | | | | | | | - Karuppaiyah Selvendiran
- Division of Gynecologic Oncology, Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Periannan Kuppusamy
- Department of Radiology and Medicine, 601 Rubin Building, Norris Cotton Cancer Center, Geisel School of Medicine, Dartmouth College, 1 Medical Center Drive, Lebanon, NH 03756, USA
| | - Carlos Carvalho
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Antonio Beltran
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Eduardo Moreno
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
| | - Uttam K Pati
- Transcription and Human Biology Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rajan Gogna
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
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165
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Role of the PI3K/AKT (mTOR and GSK3β) signalling pathway and photobiomodulation in diabetic wound healing. Cytokine Growth Factor Rev 2019; 50:52-59. [DOI: 10.1016/j.cytogfr.2019.03.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 03/11/2019] [Indexed: 12/14/2022]
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166
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Kilmister EJ, Paterson C, Brasch HD, Davis PF, Tan ST. The Role of the Renin-Angiotensin System and Vitamin D in Keloid Disorder-A Review. Front Surg 2019; 6:67. [PMID: 32039229 PMCID: PMC6988818 DOI: 10.3389/fsurg.2019.00067] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 11/13/2019] [Indexed: 12/20/2022] Open
Abstract
Keloid disorder (KD) is a fibroproliferative condition characterized by excessive dermal collagen deposition in response to wounding and/or inflammation of the skin. Despite intensive research, treatment for KD remains empirical and unsatisfactory. Activation of the renin-angiotensin system (RAS) leads to fibrosis in various organs through its direct effect and the resultant hypertension, and activation of the immune system. The observation of an increased incidence of KD in dark-skinned individuals who are predisposed to vitamin D deficiency (VDD) and hypertension, and the association of KD with hypertension and VDD, all of which are associated with an elevated activity of the RAS, provides clues to the pathogenesis of KD. There is increasing evidence implicating embryonic-like stem (ESC) cells that express ESC markers within keloid-associated lymphoid tissues (KALTs) in keloid lesions. These primitive cells express components of the RAS, cathepsins B, D, and G that constitute bypass loops of the RAS, and vitamin D receptor (VDR). This suggests that the RAS directly, and through signaling pathways that converge on the RAS, including VDR-mediated mechanisms and the immune system, may play a critical role in regulating the primitive population within the KALTs. This review discusses the role of the RAS, its relationship with hypertension, vitamin D, VDR, VDD, and the immune system that provide a microenvironmental niche in regulating the ESC-like cells within the KALTs. These ESC-like cells may be a novel therapeutic target for the treatment of this enigmatic and challenging condition, by modulating the RAS using inhibitors of the RAS and its bypass loops and convergent signaling pathways.
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Affiliation(s)
| | | | - Helen D Brasch
- Gillies McIndoe Research Institute, Wellington, New Zealand
| | - Paul F Davis
- Gillies McIndoe Research Institute, Wellington, New Zealand
| | - Swee T Tan
- Gillies McIndoe Research Institute, Wellington, New Zealand.,Wellington Regional Plastic, Maxillofacial & Burns Unit, Hutt Hospital, Wellington, New Zealand
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167
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Bonferoni MC, Rossi S, Sandri G, Caramella C, Del Fante C, Perotti C, Miele D, Vigani B, Ferrari F. Bioactive Medications for the Delivery of Platelet Derivatives to Skin Wounds. Curr Drug Deliv 2019; 16:472-483. [PMID: 30894109 PMCID: PMC6637103 DOI: 10.2174/1381612825666190320154406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/24/2019] [Accepted: 03/13/2019] [Indexed: 12/13/2022]
Abstract
Chronic wounds are the result of alterations in the complex series of events of physiological wound healing. In particular, the prolonged inflammation results in increased protease activity, in the deg-radation of extracellular matrix (ECM) and of growth factors (GFs). The relevance of platelet GFs in maintaining and restoring the complex equilibrium of different moments in wound healing is well recog-nized. Moreover, the observed decrease of their levels in chronic wounds suggested a possible therapeutic role of the external application to the wounds. It has been also pointed out that tissue regeneration can be more efficiently obtained by the synergic use of different GFs. Platelet derivatives such as platelet-rich plasma (PRP) and platelet lysate (PL) are able to release GFs in a balanced pool. Their therapeutic use in regenerative medicine and wound healing has been therefore more and more frequently proposed in clini-cal trials and in the literature. The development of a suitable formulation able to control the GFs release rate, to protect the GFs, and to assure their prolonged contact with the wound site, is of paramount im-portance for the therapeutic success. The present review considers some formulation approaches for PRP and PL application to wounds
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Affiliation(s)
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Carla Caramella
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Claudia Del Fante
- Immunohaematology and Transfusion Service and Cell Therapy Unit of Fondazione IRCCS, S. Matteo, 27100 Pavia, Italy
| | - Cesare Perotti
- Immunohaematology and Transfusion Service and Cell Therapy Unit of Fondazione IRCCS, S. Matteo, 27100 Pavia, Italy
| | - Dalila Miele
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Barbara Vigani
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Franca Ferrari
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
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168
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Dong F, Zhang J, Zhu S, Lan T, Yang J, Li L. Chrysin Alleviates Chronic Hypoxia–Induced Pulmonary Hypertension by Reducing Intracellular Calcium Concentration in Pulmonary Arterial Smooth Muscle Cells. J Cardiovasc Pharmacol 2019; 74:426-435. [DOI: 10.1097/fjc.0000000000000726] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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169
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Yu K, Xiang L, Li S, Wang S, Chen C, Mu H. HIF1α promotes prostate cancer progression by increasing ATG5 expression. Anim Cells Syst (Seoul) 2019; 23:326-334. [PMID: 31700698 PMCID: PMC6830197 DOI: 10.1080/19768354.2019.1658637] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/09/2019] [Accepted: 07/26/2019] [Indexed: 01/07/2023] Open
Abstract
Prostate cancer (PCa) is the most frequently diagnosed cancer among men. However, the major modifiable risk factors for PCa are poorly known and its specific mechanism of progression remains unclear. Here we reported that, in prostate cancer cells, the autophagy level was elevated under hypoxic condition, as well as the mRNA and protein level of ATG5, which is an important gene related to autophagy. Furthermore, we found HIF1α could directly bind to the promoter of ATG5 and promote the expression of ATG5 on transcriptional level by luciferase assay and ChIP assay. Intriguingly, overexpression of HIF1α by HIF1α-M could increase tumor size and the effect could be abolished by knockdown ATG5 by si-ATG5 in BALB/cA-nu/nu nude mice. Importantly, HIF1α could also promote the metastasis of PC-3 cells by upregulating the ATG5 and autophagy level and knockdown ATG5 and inhibition autophagy both could abolish the effect of overexpression of HIF1α on the migration of PC-3 cells. Taken together, our results, for the first time, proved that HIF1α could promote the proliferation and migration of PC-3 cells by direct upregulating ATG5 and autophagy level in PC-3 prostate cancer cells. Our findings not only provide new perspective for the relationship between hypoxia and autophagy, but also add new potential therapeutic regimens for the treatment of prostate cancers.
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Affiliation(s)
- Kaiyuan Yu
- The Second Affiliated Hospital & YuYing Children's Hospital of Wenzhou Medical University, Wenzhou City, People's Republic of China
| | - Luxia Xiang
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Shaoxun Li
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Shuaibin Wang
- The Second Affiliated Hospital & YuYing Children's Hospital of Wenzhou Medical University, Wenzhou City, People's Republic of China
| | - Chaohao Chen
- The Second Affiliated Hospital & YuYing Children's Hospital of Wenzhou Medical University, Wenzhou City, People's Republic of China
| | - Haiqi Mu
- The Second Affiliated Hospital & YuYing Children's Hospital of Wenzhou Medical University, Wenzhou City, People's Republic of China
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170
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Duscher D, Trotsyuk AA, Maan ZN, Kwon SH, Rodrigues M, Engel K, Stern-Buchbinder ZA, Bonham CA, Barrera J, Whittam AJ, Hu MS, Inayathullah M, Rajadas J, Gurtner GC. Optimization of transdermal deferoxamine leads to enhanced efficacy in healing skin wounds. J Control Release 2019; 308:232-239. [PMID: 31299261 DOI: 10.1016/j.jconrel.2019.07.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 06/07/2019] [Accepted: 07/08/2019] [Indexed: 12/30/2022]
Abstract
Chronic wounds remain a significant burden to both the healthcare system and individual patients, indicating an urgent need for new interventions. Deferoxamine (DFO), an iron-chelating agent clinically used to treat iron toxicity, has been shown to reduce oxidative stress and increase hypoxia-inducible factor-1 alpha (HIF-1α) activation, thereby promoting neovascularization and enhancing regeneration in chronic wounds. However due to its short half-life and adverse side effects associated with systemic absorption, there is a pressing need for targeted DFO delivery. We recently published a preclinical proof of concept drug delivery system (TDDS) which showed that transdermally applied DFO is effective in improving chronic wound healing. Here we present an enhanced TDDS (eTDDS) comprised exclusively of FDA-compliant constituents to optimize drug release and expedite clinical translation. We evaluate the eTDDS to the original TDDS and compare this with other commonly used delivery methods including DFO drip-on and polymer spray applications. The eTDDS displayed excellent physicochemical characteristics and markedly improved DFO delivery into human skin when compared to other topical application techniques. We demonstrate an accelerated wound healing response with the eTDDS treatment resulting in significantly increased wound vascularity, dermal thickness, collagen deposition and tensile strength. Together, these findings highlight the immediate clinical potential of DFO eTDDS to treating diabetic wounds. Further, the topical drug delivery platform has important implications for targeted pharmacologic therapy of a wide range of cutaneous diseases.
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Affiliation(s)
- Dominik Duscher
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Artem A Trotsyuk
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Zeshaan N Maan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sun Hyung Kwon
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Melanie Rodrigues
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Karl Engel
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Zachary A Stern-Buchbinder
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Clark A Bonham
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Janos Barrera
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alexander J Whittam
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michael S Hu
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Mohammed Inayathullah
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Jayakumar Rajadas
- Biomaterials and Advanced Drug Delivery Laboratory, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Geoffrey C Gurtner
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA.
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171
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Strowitzki MJ, Ritter AS, Kimmer G, Schneider M. Hypoxia-adaptive pathways: A pharmacological target in fibrotic disease? Pharmacol Res 2019; 147:104364. [PMID: 31376431 DOI: 10.1016/j.phrs.2019.104364] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 02/07/2023]
Abstract
Wound healing responses are physiological reactions to injuries and share common characteristics and phases independently of the injured organ or tissue. A major hallmark of wound healing responses is the formation of extra-cellular matrix (ECM), mainly consisting of collagen fibers, to restore the initial organ architecture and function. Overshooting wound healing responses result in unphysiological accumulation of ECM and collagen deposition, a process called fibrosis. Importantly, hypoxia (oxygen demand exceeds supply) plays a significant role during wound healing responses and fibrotic diseases. Under hypoxic conditions, cells activate a gene program, including the stabilization of hypoxia-inducible factors (HIFs), which induces the expression of HIF target genes counteracting hypoxia. In contrast, in normoxia, so-called HIF-prolyl hydroxylases (PHDs) oxygen-dependently hydroxylate HIF-α, which marks it for proteasomal degradation. Importantly, PHDs can be pharmacologically inhibited (PHI) by so-called PHD inhibitors. There is mounting evidence that the HIF-pathway is continuously up-regulated during the development of tissue fibrosis, and that pharmacological (HIFI) or genetic inhibition of HIF can prevent organ fibrosis. By contrast, initial (short-term) activation of the HIF pathway via PHI during wound healing seems to be beneficial in several models of inflammation or acute organ injury. Thus, timing and duration of PHI and HIFI treatment seem to be crucial. In this review, we will highlight the role of hypoxia-adaptive pathways during wound healing responses and development of fibrotic disease. Moreover, we will discuss whether PHI and HIFI might be a promising treatment option in fibrotic disease, and consider putative pitfalls that might result from this approach.
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Affiliation(s)
- Moritz J Strowitzki
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Alina S Ritter
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Gwendolyn Kimmer
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany
| | - Martin Schneider
- Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Heidelberg, Germany.
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Brazil JC, Quiros M, Nusrat A, Parkos CA. Innate immune cell-epithelial crosstalk during wound repair. J Clin Invest 2019; 129:2983-2993. [PMID: 31329162 PMCID: PMC6668695 DOI: 10.1172/jci124618] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Skin and intestinal epithelial barriers play a pivotal role in protecting underlying tissues from harsh external environments. The protective role of these epithelia is, in part, dependent on a remarkable capacity to restore barrier function and tissue homeostasis after injury. In response to damage, epithelial wounds repair by a series of events that integrate epithelial responses with those of resident and infiltrating immune cells including neutrophils and monocytes/macrophages. Compromise of this complex interplay predisposes to development of chronic nonhealing wounds, contributing to morbidity and mortality of many diseases. Improved understanding of crosstalk between epithelial and immune cells during wound repair is necessary for development of better pro-resolving strategies to treat debilitating complications of disorders ranging from inflammatory bowel disease to diabetes. In this Review we focus on epithelial and innate immune cell interactions that mediate wound healing and restoration of tissue homeostasis in the skin and intestine.
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173
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Hanssen SCA, Keijsers RRMC, Hendriks AGM, Seyger MMB, van der Vleuten CJM, van de Kerkhof PCM. The dynamics of endothelial changes in vivo following standardized skin injury. Skin Res Technol 2019; 25:618-624. [PMID: 30942508 DOI: 10.1111/srt.12693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/14/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Vascular changes, that is, functional and cellular endothelial changes, are of essential importance in healing. Alongside these vascular changes, inflammatory factors and hypoxia may play an important role in recovery. OBJECTIVES To investigate the dynamics of functional and cellular endothelial changes and hypoxia in vivo following standardized skin damage caused by tape stripping. METHODS Vascular changes (endothelial cell proliferation, vascular network size, vessel diameter) and hypoxia-inducible factor-1α were examined immunohistochemically using a CD31/Ki67 double staining and HIF-1α single staining. Cutaneous perfusion was evaluated using the Twente Optical Perfusion Camera (TOPCam). RESULTS The initial phase is seen to be dominated by endothelial cell proliferation, HIF-1α expression, and vasodilatation. Cutaneous perfusion intensity is particularly increased in the first 16 hours. The late phase of recovery (after 72 hours) is characterized by a peak of expansion of the vascular network and a second peak of endothelial cell proliferation and HIF-1α expression. CONCLUSION Endothelial cell proliferation and HIF-1α expression appear to be (strongly) related, having maximum levels at 16 hours and 72 hours. Angiogenesis and HIF-1α expression are not continuous processes, but rather occur intermittently.
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174
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Medellín-Luna MF, Castañeda-Delgado JE, Martínez-Balderas VY, Cervantes-Villagrana AR. Medicinal Plant Extracts and Their Use As Wound Closure Inducing Agents. J Med Food 2019; 22:435-443. [PMID: 30942656 DOI: 10.1089/jmf.2018.0145] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Skin insult and damage start a complex healing process that involves a myriad of coordinated reactions at both the cellular and molecular level occurring simultaneously. These processes can be divided into that of cell migration and tissue remodeling of the wound. In addition, it is well known that deep wounds that derive from surgical procedures need a multidisciplinary approach to have a successful wound healing process. Recently, there has been a renowned interest in the identification of active compounds derived from ornamental, edible, and wild plants being used in the cosmetic and skin product industry. Recent reports suggest that active components of several plants such as Propolis and Aloe vera could be used to induce the process of wound healing and tissue regeneration and reducing therefore the time to complete wound closure. Other plant species such as Achillea millefolium or Salvia officinalis have anti-inflammatory properties and promote cellular proliferation contributing to faster tissue regeneration. It has been described that Malva sylvestris influences the formation of fibrosis-free granulation tissue in the skin. Recent observations suggest that Casearia sylvestris induces the angiogenic process. These effects have been evaluated in cell lines, different animal models, and some in randomized clinical trials. In this review we summarize the evidence of plant extracts and their active components (when known) in the acceleration of the wound closure process and tissue repair.
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Affiliation(s)
- Mitzzy F Medellín-Luna
- 1 Laboratorio de investigación en terapéutica experimental, Ciencias Químicas, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, México.,2 Maestría en Ciencias fármaco-biológicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Julio E Castañeda-Delgado
- 3 Cátedras CONACYT-Unidad de Investigación Biomédica de Zacatecas, Instituto Mexicano del Seguro Social (IMSS), Zacatecas, México
| | - V Yordani Martínez-Balderas
- 1 Laboratorio de investigación en terapéutica experimental, Ciencias Químicas, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, México.,4 Maestría en Ciencias Biomédicas, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, México
| | - Alberto R Cervantes-Villagrana
- 1 Laboratorio de investigación en terapéutica experimental, Ciencias Químicas, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, México.,4 Maestría en Ciencias Biomédicas, Área de Ciencias de la Salud, Universidad Autónoma de Zacatecas, Zacatecas, México
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175
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Lee HY, Lee HJ, Kim GC, Choi JH, Hong JW. Plasma cupping induces VEGF expression in skin cells through nitric oxide-mediated activation of hypoxia inducible factor 1. Sci Rep 2019; 9:3821. [PMID: 30846730 PMCID: PMC6405951 DOI: 10.1038/s41598-019-40086-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 01/31/2019] [Indexed: 12/23/2022] Open
Abstract
Despite a long history, the clinical efficacy of cupping therapy is still under debate. This is likely due to the lack of direct evidence for the biological actions of cupping, since the short exposure of cells to vacuum condition rarely has affects cellular activity. In this study, the medicinal properties of a recent medical technology, non-thermal plasma, were added to classical cupping and designated as 'plasma cupping' (PC). In our results, the plasma-generating efficacy was increased under a cupping-like semi-vacuum condition (410 Torr) rather than normal atmospheric pressure (760 Torr). Notably, while cupping rarely affects the angiogenic factor vascular-endothelial growth factor (VEGF)-A, the PC treatment on HaCaT human keratinocytes significantly induced the expression of VEGF-A. The increased expression of the VEGF-A gene after the PC treatment was expected to be a result of PC-mediated ERK protein activation. The PC-mediated activation of ERK was essential for the activity of hypoxia inducible factor (HIF) 1 alpha, which is responsible for the PC-mediated expression of VEGF-A. The PC mediated increase of NO in the media was thought as a main reason for the elevated HIF-1 protein activity. In addition to the angiogenesis-promoting action of PC, it also showed anti-inflammatory activity by reducing TNF-α-mediated IL-1β and IL-6 expression. Taken together, this study indicates the potential for PC that could enhance the clinical efficacy of cupping by adding the effects of non-thermal plasma to traditional cupping.
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Affiliation(s)
- Hyun-Young Lee
- Department of electrical engineering, Pusan National University, Busan, South Korea
| | - Hae-June Lee
- Department of electrical engineering, Pusan National University, Busan, South Korea
| | - Gyoo-Cheon Kim
- Department of Anatomy and Cell Biology, School of Dentistry, Pusan National University, Yangsan, South Korea
| | - Jeong-Hae Choi
- Department of Anatomy and Cell Biology, School of Dentistry, Pusan National University, Yangsan, South Korea.
- Department of Internal Medicine, School of Korean Medicine, Pusan National University, Yangsan, South Korea.
| | - Jin-Woo Hong
- Department of Internal Medicine, School of Korean Medicine, Pusan National University, Yangsan, South Korea.
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Cobalt-mediated multi-functional dressings promote bacteria-infected wound healing. Acta Biomater 2019; 86:465-479. [PMID: 30599244 DOI: 10.1016/j.actbio.2018.12.048] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/21/2018] [Accepted: 12/28/2018] [Indexed: 01/13/2023]
Abstract
Wound dressings with multiple functions are required to meet the complexity of the wound healing process. The multifunctionality often leads to an increase in the complexity and difficulty in dressing preparation. To surmount this problem, we used a facile preparation and fabrication process to fabricate a multi-functional dressing by integrating four widely accessible materials: plain gauze, sodium alginate (SA), Ca2+ and Co2+. Firstly, mixed Ca2+/Co2+ ion solutions with different concentration were applied to gauzes. After drying, SA solution was added to ionized gauze and Co2+-Ca2+/Gauze/SA (Ion-GSA) composite dressings were formed easily. In vitro results showed that all Ion-GSA dressings exhibited strong mechanical properties, uniform dispersion and sustained release of Ca2+ and Co2+, and the ability to retain moisture and absorb wound exudate. Besides the above advantages, dressings prepared with 0.25 g/L Co2+ and 4 g/L Ca2+ (Co2+0.25-Ca2+4 GSA composite dressings) exhibited the best overall effect for inducing a hypoxia-like response, and favorable cytocompatibility, hemostatic property and antibacterial activity. In vivo wound healing assays revealed that Co2+0.25-Ca2+4 GSA composite dressings inhibited bacterial growth, increased local Hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), transforming growth factor-β1 (TGF-β1) protein expression, and accelerated full-thickness skin wound healing in mouse bacterial-infected wound model. The quick healing wounds had improved angiogenesis, macrophages regulation, re-epithelialization and dense collagen deposition. Collectively, our results indicated that Co2+0.25-Ca2+4 GSA composite dressings promote wound healing. STATEMENT OF SIGNIFICANCE: Wound dressings with integrated functionalities are required to meet complex clinical requirements. However, there is often a trade-off between reducing preparation complexity and increasing the multifunctionality of the dressing's properties. In this study, we prepared multifunctional composite dressings by a facile preparation process using widely accessible materials. The composite dressings possessed the mechanical strength of gauze, had the effective wound exudate absorption, moisture maintenance and hemostatic property capacity of calcium alginate hydrogels, and had the hypoxia-like induction and the antimicrobial effects of Co2+. These functions all together promote bacteria-infected wound healing. Thus, we believed that the composite dressings can be widely applied in skin wound repair duo to their facile preparation method and good therapeutic effect.
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Zhu Y, Wang Y, Jia Y, Xu J, Chai Y. Roxadustat promotes angiogenesis through HIF‐1α/VEGF/VEGFR2 signaling and accelerates cutaneous wound healing in diabetic rats. Wound Repair Regen 2019; 27:324-334. [PMID: 30817065 DOI: 10.1111/wrr.12708] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/11/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Yu Zhu
- Department of Orthopedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's Hospital Yishan Rd 600, Shanghai 200233 PR China
| | - Yanmao Wang
- Department of Orthopedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's Hospital Yishan Rd 600, Shanghai 200233 PR China
| | - Yachao Jia
- Department of Orthopedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's Hospital Yishan Rd 600, Shanghai 200233 PR China
| | - Jia Xu
- Department of Orthopedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's Hospital Yishan Rd 600, Shanghai 200233 PR China
| | - Yimin Chai
- Department of Orthopedic SurgeryShanghai Jiao Tong University Affiliated Sixth People's Hospital Yishan Rd 600, Shanghai 200233 PR China
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178
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Handaya Y, Sunardi M. Bilateral Rotational S Flap Technique for Preventing Restenosis in Patients With Severe Circular Anal Stenosis: A Review of 2 Cases. Ann Coloproctol 2019:221-224. [PMID: 30781931 PMCID: PMC6732331 DOI: 10.3393/ac.2017.10.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 10/16/2017] [Indexed: 12/21/2022] Open
Abstract
Anal stenosis is a late hemorrhoidectomy complication. Sphincterotomy and various anoplasty techniques are used for treatment severe anal stenosis, such as the C flap, House flap, U flap, and rotational S flap, but no procedure is ideal for every patient. We review 2 cases of severe circular anal stenosis. Their complaints included narrow caliber of the stool and feeling unsatisfied defecation. Excision of scar tissue using the circular technique was followed by reconstruction using the bilateral rotational S flap procedure. At the 1-year follow-up, the patient had complaints about neither defecation nor pain, and no longer needed laxative agents. In conclusion, the bilateral rotational S flap technique should be considered as a viable treatment because it can also prevent the occurrence of restenosis, especially given the consideration of adequate blood supply.
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Affiliation(s)
- Yuda Handaya
- Digestive Surgery Division, Department of Surgery, Faculty of Medicine, Universitas Gadjah Mada/Dr. Sardjito Hospital, Yogyakarta, Indonesia
| | - Mukhamad Sunardi
- Faculty of Medicine, Universitas Gadjah Mada/Dr. Sardjito Hospital, Yogyakarta, Indonesia
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179
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Leinhos L, Peters J, Krull S, Helbig L, Vogler M, Levay M, van Belle GJ, Ridley AJ, Lutz S, Katschinski DM, Zieseniss A. Hypoxia suppresses myofibroblast differentiation by changing RhoA activity. J Cell Sci 2019; 132:jcs223230. [PMID: 30659117 DOI: 10.1242/jcs.223230] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/09/2019] [Indexed: 12/15/2022] Open
Abstract
Fibroblasts show a high range of phenotypic plasticity, including transdifferentiation into myofibroblasts. Myofibroblasts are responsible for generation of the contraction forces that are important for wound healing and scar formation. Overactive myofibroblasts, by contrast, are involved in abnormal scarring. Cell stretching and extracellular signals such as transforming growth factor β can induce the myofibroblastic program, whereas microenvironmental conditions such as reduced tissue oxygenation have an inhibitory effect. We investigated the effects of hypoxia on myofibroblastic properties and linked this to RhoA activity. Hypoxia reversed the myofibroblastic phenotype of primary fibroblasts. This was accompanied by decreased αSMA (ACTA2) expression, alterations in cell contractility, actin reorganization and RhoA activity. We identified a hypoxia-inducible induction of ARHGAP29, which is critically involved in myocardin-related transcription factor-A (MRTF-A) signaling, the differentiation state of myofibroblasts and modulates RhoA activity. This novel link between hypoxia and MRTF-A signaling is likely to be important for ischemia-induced tissue remodeling and the fibrotic response.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Lisa Leinhos
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Johannes Peters
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Sabine Krull
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Lena Helbig
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Melanie Vogler
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Magdolna Levay
- Experimental Pharmacology, European Center of Angioscience, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Gijsbert J van Belle
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Anne J Ridley
- Randall Centre of Cell and Molecular Biophysics, King's College London, London SE1 1UL, UK
- School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TD, UK
| | - Susanne Lutz
- Institute of Pharmacology and Toxicology, University Medical Center, Georg-August University Göttingen, 37075 Göttingen, Germany
| | - Dörthe M Katschinski
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
| | - Anke Zieseniss
- Institute of Cardiovascular Physiology, University Medical Center, Georg-August University Göttingen, 37073 Göttingen, Germany
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180
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Olson E, Mahar KM, Morgan L, Fillmore C, Holland C, Lavery L. Randomized Phase I Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Topical Daprodustat in Healthy Volunteers and in Patients With Diabetic Foot Ulcers. Clin Pharmacol Drug Dev 2019; 8:765-778. [PMID: 30720931 DOI: 10.1002/cpdd.654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/18/2018] [Indexed: 11/12/2022]
Abstract
Daprodustat, a small-molecule inhibitor of prolyl hydroxylases, prevents breakdown of hypoxia-inducible factor (HIF), leading to increased transcription of HIF-responsive genes. This randomized, placebo-controlled study evaluated the safety, tolerability, and pharmacokinetics of a topical formulation of daprodustat in healthy volunteers (intact skin) and in patients with diabetic foot ulcers (DFUs) following single and/or 14-day repeat-dose administration. In the diabetic patients, exploratory assessments of wound area, volume, and depth were made to qualitatively assess effectiveness. Systemic absorption via topical application was limited across doses up to 1.0% at 100 mg/cm2 for 14 days. Systemic pharmacokinetics were quantifiable in a few samples from a few patients. Because only sporadic concentrations were observed versus pharmacokinetic profiles, pharmacokinetic parameters were not determined. Wound area, depth, and volume showed consistent but weak improvements in the treatment arm; however, the variability in response and small sample size of the standard-of-care and placebo arms limited the ability to assess trends in wound healing compared with the daprodustat arm. Overall, topically applied daprodustat was well tolerated, raised no safety concerns, and provided limited to nonquantifiable systemic exposures. The healing of DFUs will need to be evaluated in studies designed to test this hypothesis over a longer treatment duration.
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Affiliation(s)
| | | | | | | | | | - Lawrence Lavery
- University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
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181
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Oladnabi M, Bagheri A, Rezaei Kanavi M, Azadmehr A, Kianmehr A. Extremely low frequency-pulsed electromagnetic fields affect proangiogenic-related gene expression in retinal pigment epithelial cells. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2019; 22:128-133. [PMID: 30834076 PMCID: PMC6396987 DOI: 10.22038/ijbms.2018.25023.6214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 09/23/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVES It is known that extremely low frequency-pulsed electromagnetic fields (ELF-PEMF) influence multiple cellular and molecular processes. Retinal pigment epithelial (RPE) cells have a significant part in the emergence and pathophysiology of several ocular disorders, such as neovascularization. This study assessed the impact of ELF-PEMF on the proangiogenic features of RPE cells. MATERIALS AND METHODS Primary cultured RPE cells were treated with ELF-PEMF (50 Hz) for three days. Using ELISA assay, we evaluated the effects of treatment on RPE cell proliferation and apoptosis. Also, RT-PCR was used to determine the gene expression of proangiogenic factors, such as matrix metalloproteinase-2 (MMP-2), MMP-9, vascular endothelial growth factors receptor 2 (VEGFR-2), hypoxia-inducible factor 1 (HIF-1α), VEGFA, cathepsin D, connective tissue growth factor (CTGF), E2F3, tissue inhibitors of metalloproteinases 1 (TIMP-1), and TIMP-2. RESULTS No noticeable changes were observed in cell proliferation and cell death of ELF-PEMF-exposed RPE cells, while transcript levels of proangiogenic genes (HIF-1α, VEGFA, VEGFR-2, CTGF, cathepsin D, TIMP-1, E2F3, MMP-2, and MMP-9) increased significantly. CONCLUSION RPE cells are important for homeostasis of the retina. ELF-PEMF increased the gene expression of proangiogenic factors in RPE cells, which highlights concerns about the impact of this treatment on human health.
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Affiliation(s)
- Morteza Oladnabi
- Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Abouzar Bagheri
- Department of Clinical Biochemistry and Genetics, Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mozhgan Rezaei Kanavi
- Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Azadmehr
- Immunology Department, Babol University of Medical Sciences, Babol, Iran
| | - Anvarsadat Kianmehr
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan, Iran
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Expression of Hypoxia-Inducible Factor 1α (HIF-1α) and Genes of Related Pathways in Altered Gravity. Int J Mol Sci 2019; 20:ijms20020436. [PMID: 30669540 PMCID: PMC6358763 DOI: 10.3390/ijms20020436] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/15/2019] [Accepted: 01/17/2019] [Indexed: 12/28/2022] Open
Abstract
Immune system deterioration in space represents a major risk, which has to be mitigated for exploration-class missions into the solar system. Altered gravitational forces have been shown to regulate adaptation processes in cells of the immune system, which are important for appropriate risk management, monitoring and development of countermeasures. T lymphocytes and cells of the monocyte-macrophage system are highly migratory cell types that frequently encounter a wide range of oxygen tensions in human tissues and in hypoxic areas, even under homeostatic conditions. Hypoxia-inducible factor 1 and 2 (HIF's) might have an important role in activation of T cells and cells of the monocyte-macrophages system. Thus, we investigated the regulation of HIF-dependent and, therefore, hypoxia-signaling systems in both cell types in altered gravity and performed transcript and protein analysis from parabolic flight and suborbital ballistic rocket experiments. We found that HIF-1α and HIF-1-dependent transcripts were differently regulated in altered gravity, whereas HIF-1α-dependent gene expression adapted after 5 min microgravity. Inter-platform comparisons identified PDK1 as highly responsive to gravitational changes in human U937 myelomonocytic cells and in Jurkat T cells. We suggest HIF-1 as a potential pharmacological target for counteracting immune system deterioration during space flight.
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184
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Mahdi A, Darvishi B, Majidzadeh-A K, Salehi M, Farahmand L. Challenges facing antiangiogenesis therapy: The significant role of hypoxia-inducible factor and MET in development of resistance to anti-vascular endothelial growth factor-targeted therapies. J Cell Physiol 2018; 234:5655-5663. [PMID: 30515806 DOI: 10.1002/jcp.27414] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 08/21/2018] [Indexed: 02/06/2023]
Abstract
It is now fully recognized that along with multiple physiological functions, angiogenesis is also involved in the fundamental process and pathobiology of several disorders including cancer. Recent studies have fully established the role of angiogenesis in cancer progression as well as invasion and metastasis. Consequently, many therapeutic agents such as monoclonal antibodies targeting angiogenesis pathway have been introduced in clinic with the hope for improving the outcomes of cancer therapy. Bevacizumab (Avastin®) was the first anti-vascular endothelial growth factor (VEGF) targeting monoclonal antibody developed with this purpose and soon received its accelerated US Food and Drug Administration (FDA) approval for treatment of patients with metastatic breast cancer in 2008. However, the failure to meet expecting results in different follow-up studies, forced FDA to remove bevacizumab approval for metastatic breast cancer. Investigations have now revealed that while suppressing VEGF pathway initially decreases tumor progression rate and vasculature density, activation of several interrelated pathways and signaling molecules following VEGF blockade compensate the insufficiency of VEGF and initially blocked angiogenesis, explaining in part the failure observed with bevacizumab single therapy. In present review, we introduce some of the main pathways and signaling molecules involved in angiogenesis and then propose how their interconnection may result in development of resistance to bevacizumab.
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Affiliation(s)
- Ali Mahdi
- Department of Recombinant Proteins, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Behrad Darvishi
- Department of Recombinant Proteins, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Keivan Majidzadeh-A
- Department of Recombinant Proteins, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.,Tasnim Biotechnology Research Center, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
| | - Malihe Salehi
- Department of Recombinant Proteins, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Leila Farahmand
- Department of Recombinant Proteins, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
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185
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Novel non-angiogenic role for mesenchymal stem cell-derived vascular endothelial growth factor on keratinocytes during wound healing. Cytokine Growth Factor Rev 2018; 44:69-79. [PMID: 30470511 DOI: 10.1016/j.cytogfr.2018.11.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022]
Abstract
With chronic wounds remaining a substantial healthcare issue, new therapies are sought to improve patient outcomes. Various studies have explored the benefits of promoting angiogenesis in wounds by targeting proangiogenic factors such as Vascular Endothelial Growth Factor (VEGF) family members to improve wound healing. Along similar lines, Mesenchymal Stem Cell (MSC) secretions, usually containing VEGF, have been used to improve angiogenesis in wound healing via a paracrine mechanism. Recent evidence for keratinocyte VEGF receptor expression, as well as proliferative and chemotactic responses by keratinocytes to exogenous VEGFA in vitro implies distinct non-angiogenic actions for VEGF during wound healing. In this review, we discuss the expression of VEGF family members and their receptors in keratinocytes in relation to the potential for wound healing treatments. We also explore recent findings of MSC secreted paracrine wound healing activity on keratinocytes. We report here the concept of keratinocyte wound healing responses driven by MSC-derived VEGF that is supported in the literature, providing a new mechanism for cell-free therapy of chronic wounds.
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186
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Zeng R, Lin C, Lin Z, Chen H, Lu W, Lin C, Li H. Approaches to cutaneous wound healing: basics and future directions. Cell Tissue Res 2018; 374:217-232. [PMID: 29637308 DOI: 10.1007/s00441-018-2830-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/09/2018] [Indexed: 02/05/2023]
Abstract
The skin provides essential functions, such as thermoregulation, hydration, excretion and synthesis of vitamin D. Major disruptions of the skin cause impairment of critical functions, resulting in high morbidity and death, or leave one with life-changing cosmetic damage. Due to the complexity of the skin, diverse approaches are needed, including both traditional and advanced, to improve cutaneous wound healing. Cutaneous wounds undergo four phases of healing. Traditional management, including skin grafts and wound dressings, is still commonly used in current practice but in combination with newer technology, such as using engineered skin substitutes in skin grafts or combining traditional cotton gauze with anti-bacterial nanoparticles. Various upcoming methods, such as vacuum-assisted wound closure, engineered skin substitutes, stem cell therapy, growth factors and cytokine therapy, have emerged in recent years and are being used to assist wound healing, or even to replace traditional methods. However, many of these methods still lack assessment by large-scale studies and/or extensive application. Conceptual changes, for example, precision medicine and the rapid advancement of science and technology, such as RNA interference and 3D printing, offer tremendous potential. In this review, we focus on the basics of wound treatment and summarize recent developments involving both traditional and hi-tech therapeutic methods that lead to both rapid healing and better cosmetic results. Future studies should explore a more cost-effective, convenient and efficient approach to cutaneous wound healing. Graphical abstract Combination of various materials to create advanced wound dressings.
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Affiliation(s)
- Ruijie Zeng
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Chuangqiang Lin
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Zehuo Lin
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Hong Chen
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Weiye Lu
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Changmin Lin
- Department of Histology and Embryology, Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China.
| | - Haihong Li
- Burn and Plastic Surgery Department, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China.
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Carolina E, Kato T, Khanh VC, Moriguchi K, Yamashita T, Takeuchi K, Hamada H, Ohneda O. Glucocorticoid Impaired the Wound Healing Ability of Endothelial Progenitor Cells by Reducing the Expression of CXCR4 in the PGE2 Pathway. Front Med (Lausanne) 2018; 5:276. [PMID: 30324106 PMCID: PMC6173212 DOI: 10.3389/fmed.2018.00276] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 09/10/2018] [Indexed: 01/05/2023] Open
Abstract
Background: Endothelial progenitor cells (EPCs) can be used to treat ischemic disease in cell-based therapy owing to their neovascularization potential. Glucocorticoids (GCs) have been widely used as strong anti-inflammatory reagents. However, despite their beneficial effects, side effects, such as impairing wound healing are commonly reported with GC-based therapy, and the effects of GC therapy on the wound healing function of EPCs are unclear. Methods: In this study, we investigated how GC treatment affects the characteristics and wound healing function of EPCs. Results: We found that GC treatment reduced the proliferative ability of EPCs. In addition, the expression of CXCR4 was dramatically impaired, which suppressed the migration of EPCs. A transplantation study in a flap mouse model revealed that GC-treated EPCs showed a poor homing ability to injured sites and a low activity for recruiting inflammatory cells, which led to wound healing dysfunction. Impairment of prostaglandin E2 (PGE2) synthases, cyclooxygenase (COX2) and microsomal PGE2 synthase 1 (mPEGS1) were identified as being involved in the GC-induced impairment of the CXCR4 expression in EPCs. Treatment with PGE2 rescued the expression of CXCR4 and restored the migration ability of GC-treated EPCs. In addition, the PGE2 signal that activated the PI3K/AKT pathway was identified to be involved in the regulation of CXCR4 in EPCs under the effects of GCs. In addition, similar negative effects of GCs were observed in EPCs under hypoxic conditions. Under hypoxic conditions, GCs independently impaired the PGE2 and HIF2α pathways, which downregulated the expression of CXCR4 in EPCs. Our findings highlighted the influences of GCs on the characteristics and functions of EPCs, suggesting that the use of EPCs for autologous cell transplantation in patients who have used GCs for a long time should be considered carefully.
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Affiliation(s)
- Erica Carolina
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Toshiki Kato
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.,Ph.D. Program in Human Biology, School of Integrative Global Majors, University of Tsukuba, Tsukuba, Japan
| | - Vuong Cat Khanh
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Kana Moriguchi
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Toshiharu Yamashita
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Kosuke Takeuchi
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Hiromi Hamada
- Department of Obstetrics and Gynecology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Osamu Ohneda
- Laboratory of Regenerative Medicine and Stem Cell Biology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
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188
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Abstract
The constant intrinsic and extrinsic stress the skin is exposed to leads to significant impairments of the regenerative capacity of aging skin. Current skin rejuvenation approaches lack the ability to holistically support the biological processes that exhaust during aging skin degeneration, such as collagen production, cell migration and proliferation, and new vessel formation. Similar to chronic wounds, aged skin is characterized by dysfunction of key cellular regulatory pathways impairing regeneration. Recent evidence suggests that the same mechanisms hindering a physiologic healing response in chronic wounds are the basis of impaired tissue homeostasis in aged skin. Dysfunction of a main response-to-injury pathway, the hypoxia-inducible factor (HIF)-1α regulatory pathway, has been identified as pivotal both in chronic wounds and in aging skin degeneration. HIF-1α signaling is significantly involved in tissue homeostasis and neovascularization, resulting in the production of new collagen, elastin, and nourishing blood vessels. Modulating the functionality of this pathway has been demonstrated to significantly enhance tissue regeneration. In this review, we present an overview of the regenerative effects linked to the up-regulation of HIF-1α functionality, potentially resulting in skin rejuvenation on both the cellular level and the tissue level.
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189
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Pichu S, Vimalraj S, Sathiyamoorthy J, Viswanathan V. Association of hypoxia inducible factor-1 alpha exon 12 mutation in diabetic patients with and without diabetic foot ulcer. Int J Biol Macromol 2018; 119:833-837. [PMID: 30086330 DOI: 10.1016/j.ijbiomac.2018.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/03/2018] [Accepted: 08/04/2018] [Indexed: 02/07/2023]
Abstract
Hypoxia inducible factor 1 alpha (HIF-1α) is a key regulator of the genes involved in the cellular response to hypoxia. This study aims to determine the HIF-1α gene polymorphism and its association with protein expression in diabetic subjects with and without diabetic foot ulcers (DFU). A total of 529 patients with T2DM (N = 185), DFU (N = 199) and Control (N = 145) were accounted for the study. PCR-RFLP experiment was carried out in order to find the allelic and genotypic comparison of HIF-1α gene in various groups of patients. There was a highly increased frequency of GA, RR value of 3.533(2.099-5.950) with p-value of 0.0001 on DFU patients when compared to that of control subjects with risk allele of GA, RR value of 1.756 (1.294-2.384) with p-value of 0.00001. Thus, we found that there was a significant association of HIF-1α polymorphism in exon 12 among DFU patients when compared to control groups. The circulatory HIF-1α protein expression study indicated a decreased expression in DFU levels when compared to T2DM and control. Overall, the study showed that there is an association of HIF-1α polymorphism (G1970A) in diabetes and DFU patients when compared to the healthy group.
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Affiliation(s)
| | - Selvaraj Vimalraj
- Centre for Biotechnology, Anna University, Chennai, Tamil Nadu 600 025, India.
| | - Jayalalitha Sathiyamoorthy
- Department of Biotechnology, Dr. M.G.R. Educational and Research Institute University, Chennai, Tamil Nadu, India
| | - Vijay Viswanathan
- Department of Genetics and Molecular Biology, Prof M. Viswanathan Diabetes Research Centre, MV Hospital for Diabetes, Royapuram, Chennai, India
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190
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Macarak EJ, Lotto CE, Koganti D, Jin X, Wermuth PJ, Olsson AK, Montgomery M, Rosenbloom J. Trametinib prevents mesothelial-mesenchymal transition and ameliorates abdominal adhesion formation. J Surg Res 2018; 227:198-210. [DOI: 10.1016/j.jss.2018.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/11/2018] [Accepted: 02/13/2018] [Indexed: 12/13/2022]
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191
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Dallas A, Trotsyuk A, Ilves H, Bonham CA, Rodrigues M, Engel K, Barrera JA, Kosaric N, Stern-Buchbinder ZA, White A, Mandell KJ, Hammond PT, Mansbridge J, Jayasena S, Gurtner GC, Johnston BH. Acceleration of Diabetic Wound Healing with PHD2- and miR-210-Targeting Oligonucleotides. Tissue Eng Part A 2018; 25:44-54. [PMID: 29644938 DOI: 10.1089/ten.tea.2017.0484] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
In diabetes-associated chronic wounds, the normal response to hypoxia is impaired and many cellular processes involved in wound healing are hindered. Central to the hypoxia response is hypoxia-inducible factor-1α (HIF-1α), which activates multiple factors that enhance wound healing by promoting cellular motility and proliferation, new vessel formation, and re-epithelialization. Prolyl hydroxylase domain-containing protein 2 (PHD2) regulates HIF-1α activity by targeting it for degradation under normoxia. HIF-1α also upregulates microRNA miR-210, which in turn regulates proteins involved in cell cycle control, DNA repair, and mitochondrial respiration in ways that are antagonistic to wound repair. We have identified a highly potent short synthetic hairpin RNA (sshRNA) that inhibits expression of PHD2 and an antisense oligonucleotide (antimiR) that inhibits miR-210. Both oligonucleotides were chemically modified for improved biostability and to mitigate potential immunostimulatory effects. Using the sshRNA to silence PHD2 transcripts stabilizes HIF-1α and, in combination with the antimiR targeting miR-210, increases proliferation and migration of keratinocytes in vitro. To assess activity and delivery in an impaired wound healing model in diabetic mice, PHD2-targeting sshRNAs and miR-210 antimiRs both alone and in combination were formulated for local delivery to wounds using layer-by-layer (LbL) technology. LbL nanofabrication was applied to incorporate sshRNA into a thin polymer coating on a Tegaderm mesh. This coating gradually degrades under physiological conditions, releasing sshRNA and antimiR for sustained cellular uptake. Formulated treatments were applied directly to splinted full-thickness excisional wounds in db/db mice. Cellular uptake was confirmed using fluorescent sshRNA. Wounds treated with a single application of PHD2 sshRNA or antimiR-210 closed 4 days faster than untreated wounds, and wounds treated with both oligonucleotides closed on average 4.75 days faster. Markers for neovascularization and cell proliferation (CD31 and Ki67, respectively) were increased in the wound area following treatment, and vascular endothelial growth factor (VEGF) was increased in sshRNA-treated wounds. Our results suggest that silencing of PHD2 and miR-210 either together or separately by localized delivery of sshRNAs and antimiRs is a promising approach for the treatment of chronic wounds, with the potential for rapid clinical translation.
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Affiliation(s)
| | - Artem Trotsyuk
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | | | - Clark A Bonham
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - Melanie Rodrigues
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - Karl Engel
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - Janos A Barrera
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | - Nina Kosaric
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
| | | | | | | | - Paula T Hammond
- 4 Koch Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | | | | | - Geoffrey C Gurtner
- 2 Department of Surgery, Stanford University School of Medicine, Stanford, California
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192
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Sharma D, Singh P, Singh SS. β-N-oxalyl-L-α,β-diaminopropionic acid induces wound healing by stabilizing HIF-1α and modulating associated protein expression. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 44:9-19. [PMID: 29895497 DOI: 10.1016/j.phymed.2018.04.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 01/15/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND β-N-oxalyl-L-α,β-diaminopropionic acid (L-ODAP) is a non-protein amino acid with haemostatic property present in Lathyrus sativus. It is considered to be the causative agent of neurolathyrism that occurs upon prolonged overconsumption of Lathyrus sativus seeds. L-ODAP is used as a haemostatic drug in surgical dressings. We previously reported that it can stabilize hypoxia inducible factor (HIF)-1α in normoxic conditions. HYPOTHESIS We hypothesised that L-ODAP might affect wound healing by modulating cellular proliferation, migration and angiogenesis via HIF-1α stabilization. STUDY DESIGN We performed in vitro assays to evaluate wound healing activity of L-ODAP. Further, we prepared pharmaceutical gel containing L-ODAP and checked its effect on healing of full thickness excision wounds using Wistar albino rats. METHODS Effect of L-ODAP on HT1080 cell line proliferation, migration and invasion was investigated. Further, gel containing L-ODAP was applied on full thickness excision wounds of Wistar rats. Western blot and zymography were performed with wound tissue extracts obtained 2 days post-wounding and histological and immunohistochemical analysis with regenerated tissue obtained 10 days post-wounding. Evaluation was made based on wound contraction percentage, histological analysis and protein expression levels. RESULTS L-ODAP significantly (P < 0.05) affected wound healing both in vitro and in vivo. At non-toxic concentrations, it induced cell proliferation, migration, invasion and MMP-2 & -9 expressions. L-ODAP treated wounds healed faster than vehicle treated ones. Significantly higher expression level of HIF-1α, VEGF-A, PDGF-A and matrix metalloproteases were observed in L-ODAP treated wounds. CONCLUSION The present investigation explores potential of L-ODAP as a wound healing agent. L-ODAP positively affected wound healing both in vitro and in vivo and thus could be considered a natural wound healing agent.
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Affiliation(s)
- Deepshikha Sharma
- Department of Biochemistry, Osmania University, Hyderabad, TS, India
| | - Preeti Singh
- Bharati Vidyapeeth Medical College, Pune, Maharashtra, India
| | - Surya S Singh
- Department of Biochemistry, Osmania University, Hyderabad, TS, India.
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193
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Foxn1 expression in keratinocytes is stimulated by hypoxia: further evidence of its role in skin wound healing. Sci Rep 2018; 8:5425. [PMID: 29615703 PMCID: PMC5882803 DOI: 10.1038/s41598-018-23794-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 03/21/2018] [Indexed: 01/09/2023] Open
Abstract
Recent studies have shown that the transcription factor Foxn1, which is expressed in keratinocytes, is involved in the skin wound healing process, yet how Foxn1 functions remains largely unknown. Our latest data indicate that Foxn1 drives skin healing via engagement in re-epithelization and the epithelial-mesenchymal transition (EMT) process. In the present study, 2D-DIGE proteomic profiling analysis of in vitro cultured keratinocytes transfected with adenoviral vector carrying Foxn1-GFP or GFP alone (control) revealed forty proteins with differential abundance between the compared groups. Among the proteins with Foxn1-dependent expression, several enable adaptation to hypoxia. Subsequent experiments revealed that hypoxic conditions (1% O2) stimulate endogenous and exogenous (transfected Ad-Foxn1) Foxn1 expression in cultured keratinocytes. A proteomics analysis also identified proteins that can act as a factors controlling the balance between cell proliferation, differentiation and apoptosis in response to Foxn1. We also showed that in C57BL/6 keratinocytes, the stimulation of Foxn1 by hypoxia is accompanied by increases in Mmp-9 expression. These data corroborate the detected co-localization of Foxn1 and Mmp-9 expression in vivo in post-wounding skin samples of Foxn1::Egfp transgenic mice. Together, our data indicate that Foxn1 orchestrates cellular changes in keratinocytes in both physiological (self-renewal) and pathological (skin wound healing) contexts.
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194
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Wang C, Wang Q, Gao W, Zhang Z, Lou Y, Jin H, Chen X, Lei B, Xu H, Mao C. Highly efficient local delivery of endothelial progenitor cells significantly potentiates angiogenesis and full-thickness wound healing. Acta Biomater 2018; 69:156-169. [PMID: 29397318 DOI: 10.1016/j.actbio.2018.01.019] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 12/19/2017] [Accepted: 01/16/2018] [Indexed: 01/01/2023]
Abstract
Wound therapy with a rapid healing performance remains a critical clinical challenge. Cellular delivery is considered to be a promising approach to improve the efficiency of healing, yet problems such as compromised cell viability and functionality arise due to the inefficient delivery. Here, we report the efficient delivery of endothelial progenitor cells (EPCs) with a bioactive nanofibrous scaffold (composed of collagen and polycaprolactone and bioactive glass nanoparticles, CPB) for enhancing wound healing. Under the stimulation of CPB nanofibrous system, the viability and angiogenic ability of EPCs were significantly enhanced through the activation of Hif-1α/VEGF/SDF-1α signaling. In vivo, CPB/EPC constructs significantly enhanced the formation of high-density blood vessels by greatly upregulating the expressions of Hif-1α, VEGF, and SDF-1α. Moreover, owing to the increased local delivery of cells and fast neovascularization within the wound site, cell proliferative activity, granulation tissue formation, and collagen synthesis and deposition were greatly promoted by CPB/EPC constructs resulting in rapid re-epithelialization and regeneration of skin appendages. As a result, the synergistic enhancement of wound healing was observed from CPB/EPC constructs, which suggests the highly efficient delivery of EPCs. CPB/EPC constructs may become highly competitive cell-based therapeutic products for efficient impaired wound healing application. This study may also provide a novel strategy to develop bioactive cell therapy constructs for angiogenesis-related regenerative medicine. STATEMENT OF SIGNIFICANCE This paper reported a highly efficient local delivery of EPCs using bioactive glass-based CPB nanofibrous scaffold for enhancing angiogenesis and wound regeneration. In vitro study showed that CPB can promote the proliferation, migration, and tube formation of EPCs through upregulation of the Hif-1α/VEGF/SDF-1α signaling pathway, indicating that the bioactivity and angiogenic ability of EPCs can be highly maintained and promoted by the CPB scaffold. Moreover, CPB/EPC constructs effectively stimulated the regeneration of diabetic wounds with satisfactory vascularization and better healing outcomes in a full-thickness wound model, suggesting that the highly efficient delivery of EPCs to wound site facilitates angiogenesis and further leads to wound healing. The high angiogenic capacity and excellent healing ability make CPB/EPC constructs highly competitive in cell-based therapeutic products for efficient wound repair application.
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195
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Asperosaponin VI promotes angiogenesis and accelerates wound healing in rats via up-regulating HIF-1α/VEGF signaling. Acta Pharmacol Sin 2018; 39:393-404. [PMID: 29219948 DOI: 10.1038/aps.2017.161] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/17/2017] [Indexed: 12/17/2022] Open
Abstract
Wound therapy remains a clinical challenge due to the complexity of healing pathology and high demand of achieving functional and aesthetically satisfactory scars. Newly formed blood vessels are essential for tissue repair since they can support cells at the wound site with nutrition and oxygen. In this study, we investigated the effects of Asperosaponin VI (ASA VI) isolated from a traditional Chinese medicine, the root of Dipsacus asper Wall, in promoting angiogenesis, as well as its function in wound therapeutics. Treatment of human umbilical vein endothelial cells (HUVECs) with ASA VI (20-80 μg/mL) dose-dependently promoted the proliferation, migration and enhanced their angiogenic ability in vitro, which were associated with the up-regulated HIF-1α/VEGF signaling. Full-thickness cutaneous wound model rats were injected with ASA VI (20 mg·kg-1·d-1, iv) for 21 d. Administration of ASA VI significantly promoted the cutaneous wound healing, and more blood vessels were observed in the regenerated tissue. Due to rapid vascularization, the cellular proliferation status, granulation tissue formation, collagen matrix deposition and remodeling processes were all accelerated, resulting in efficient wound healing. In summary, ASA VI promotes angiogenesis of HUVECs in vitro via up-regulating the HIF-1α/VEGF pathway, and efficiently enhances the vascularization in regenerated tissue and facilitates wound healing in vivo. The results reveal that ASA VI is a potential therapeutic for vessel injury-related wounds.
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196
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Ko SH, Nauta AC, Morrison SD, Hu MS, Zimmermann AS, Chung MT, Glotzbach JP, Wong VW, Walmsley GG, Lorenz HP, Chan DA, Gurtner GC, Giaccia AJ, Longaker MT. PHD-2 Suppression in Mesenchymal Stromal Cells Enhances Wound Healing. Plast Reconstr Surg 2018; 141:55e-67e. [PMID: 29280872 PMCID: PMC5747314 DOI: 10.1097/prs.0000000000003959] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cell therapy with mesenchymal stromal cells is a promising strategy for tissue repair. Restoration of blood flow to ischemic tissues is a key step in wound repair, and mesenchymal stromal cells have been shown to be proangiogenic. Angiogenesis is critically regulated by the hypoxia-inducible factor (HIF) superfamily, consisting of transcription factors targeted for degradation by prolyl hydroxylase domain (PHD)-2. The aim of this study was to enhance the proangiogenic capability of mesenchymal stromal cells and to use these modified cells to promote wound healing. METHODS Mesenchymal stromal cells harvested from mouse bone marrow were transduced with short hairpin RNA (shRNA) against PHD-2; control cells were transduced with scrambled shRNA (shScramble) construct. Gene expression quantification, human umbilical vein endothelial cell tube formation assays, and wound healing assays were used to assess the effect of PHD knockdown mesenchymal stromal cells on wound healing dynamics. RESULTS PHD-2 knockdown mesenchymal stromal cells overexpressed HIF-1α and multiple angiogenic factors compared to control (p < 0.05). Human umbilical vein endothelial cells treated with conditioned medium from PHD-2 knockdown mesenchymal stromal cells exhibited increased formation of capillary-like structures and enhanced migration compared with human umbilical vein endothelial cells treated with conditioned medium from shScramble-transduced mesenchymal stromal cells (p < 0.05). Wounds treated with PHD-2 knockdown mesenchymal stromal cells healed at a significantly accelerated rate compared with wounds treated with shScramble mesenchymal stromal cells (p < 0.05). Histologic studies revealed increased blood vessel density and increased cellularity in the wounds treated with PHD-2 knockdown mesenchymal stromal cells (p < 0.05). CONCLUSIONS Silencing PHD-2 in mesenchymal stromal cells augments their proangiogenic potential in wound healing therapy. This effect appears to be mediated by overexpression of HIF family transcription factors and up-regulation of multiple downstream angiogenic factors.
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Affiliation(s)
- Sae Hee Ko
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Division of Vascular Surgery, Department of Surgery, University of California, San Diego, CA
| | - Allison C. Nauta
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Oregon Health and Sciences University, Portland, OR
| | - Shane D. Morrison
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Michael S. Hu
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Andrew S. Zimmermann
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Michael T. Chung
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Jason P. Glotzbach
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Division of Cardiothoracic Surgery, Department of Surgery, New York Presbyterian Hospital, New York, NY
| | - Victor W. Wong
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Graham G. Walmsley
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - H. Peter Lorenz
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Denise A. Chan
- Department of Radiation Oncology, University of California, San Francisco, CA
| | - Geoffrey C. Gurtner
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
| | - Amato J. Giaccia
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA
| | - Michael T. Longaker
- Hagey Laboratory for Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA
- Institute of Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
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197
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Abstract
Surgery is a mainstay treatment for patients with solid tumours. However, despite surgical resection with a curative intent and numerous advances in the effectiveness of (neo)adjuvant therapies, metastatic disease remains common and carries a high risk of mortality. The biological perturbations that accompany the surgical stress response and the pharmacological effects of anaesthetic drugs, paradoxically, might also promote disease recurrence or the progression of metastatic disease. When cancer cells persist after surgery, either locally or at undiagnosed distant sites, neuroendocrine, immune, and metabolic pathways activated in response to surgery and/or anaesthesia might promote their survival and proliferation. A consequence of this effect is that minimal residual disease might then escape equilibrium and progress to metastatic disease. Herein, we discuss the most promising proposals for the refinement of perioperative care that might address these challenges. We outline the rationale and early evidence for the adaptation of anaesthetic techniques and the strategic use of anti-adrenergic, anti-inflammatory, and/or antithrombotic therapies. Many of these strategies are currently under evaluation in large-cohort trials and hold promise as affordable, readily available interventions that will improve the postoperative recurrence-free survival of patients with cancer.
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198
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Sahay M, Kalra S, Badani R, Bantwal G, Bhoraskar A, Das AK, Dhorepatil B, Ghosh S, Jeloka T, Khandelwal D, Latif ZA, Nadkar M, Pathan MF, Saboo B, Sahay R, Shimjee S, Shrestha D, Siyan A, Talukdar SH, Tiwaskar M, Unnikrishnan AG. Diabetes and Anemia: International Diabetes Federation (IDF) - Southeast Asian Region (SEAR) position statement. Diabetes Metab Syndr 2017; 11 Suppl 2:S685-S695. [PMID: 28483426 DOI: 10.1016/j.dsx.2017.04.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 04/27/2017] [Indexed: 02/07/2023]
Abstract
Anemia is often associated with diabetes mellitus and is known to intensify the risk of developing diabetes-related microvascular and macrovascular complications. There is paucity in understanding of co-existence of these conditions, especially in Southeast Asian countries. Iron and/or erythropoietin deficiencies are the major causes of anemia in diabetes, and diabetic kidney disease plays a key role. Patients with diabetes need to be screened for anemia along with other risk factors and anemia should be corrected appropriately to improve overall clinical outcomes. This position statement aims to provide a comprehensive overview and an algorithm for appropriate management of anemia in patients with diabetes.
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Affiliation(s)
| | | | | | | | | | - A K Das
- Pondicherry Institute of Medical Sciences, Puducherry, India
| | | | | | | | | | | | - Milind Nadkar
- Seth G.S. Medical College & KEM Hospital, Mumbai, India
| | | | - Banshi Saboo
- Dia Care - Diabetes Care and Hormone Clinic, Ambawadi, Ahmedabad, India
| | | | | | | | - Ali Siyan
- Maldivian Diabetes Society, Male, Maldives
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199
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Du HC, Jiang L, Geng WX, Li J, Zhang R, Dang JG, Shu MG, Li LW. Evaluation of xenogeneic extracellular matrix fabricated from CuCl2-conditioned mesenchymal stem cell sheets as a bioactive wound dressing material. J Biomater Appl 2017; 32:472-483. [DOI: 10.1177/0885328217731951] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hui-Cong Du
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
| | - Lin Jiang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
| | - Wen-Xin Geng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
| | - Jing Li
- Department of plastic and Burn Surgery, Tangdu Hospital, Forth Military Medical University, Xi'an, China
| | - Rui Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
| | - Jin-Ge Dang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
| | - Mao-Guo Shu
- Department of Plastic, Aesthetic and Maxillofacial Surgery, The First Affiliated Hospital of Xi'an, Jiaotong University, Xi'an, China
| | - Li-Wen Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, Xi'an, China
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200
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Growth Factor-Reinforced ECM Fabricated from Chemically Hypoxic MSC Sheet with Improved In Vivo Wound Repair Activity. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2578017. [PMID: 29018809 PMCID: PMC5605873 DOI: 10.1155/2017/2578017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/01/2017] [Indexed: 01/05/2023]
Abstract
MSC treatment can promote cutaneous wound repair through multiple mechanisms, and paracrine mediators secreted by MSC are responsible for most of its therapeutic benefits. Recently, MSC sheet composed of live MSCs and their secreted ECMs was reported to promote wound healing; however, whether its ECM alone could accelerate wound closure remained unknown. In this study, Nc-ECM and Cc-ECM were prepared from nonconditioned and CoCl2-conditioned MSC sheets, respectively, and their wound healing properties were evaluated in a mouse model of full-thickness skin defect. Our results showed that Nc-ECM can significantly promote wound repair through early adipocyte recruitment, rapid reepithelialization, enhanced granulation tissue growth, and augmented angiogenesis. Moreover, conditioning of MSC sheet with CoCl2 dramatically enriched its ECM with collagen I, collagen III, TGF-β1, VEGF, and bFGF via activation of HIF-1α and hence remarkably improved its ECM's in vivo wound healing potency. All the Cc-ECM-treated wounds completely healed on day 7, while Nc-ECM-treated wounds healed about 85.0% ± 8.6%, and no-treatment wounds only healed 69.8% ± 9.6% (p < 0.05). Therefore, we believe that such growth factor-reinforced ECM fabricated from chemically hypoxic MSC sheet has the potential for clinical translation and will lead to a MSC-derived, cost-effective, bankable biomaterial for wound management.
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