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Gumede DB, Abrahamse H, Houreld NN. Targeting Wnt/β-catenin signaling and its interplay with TGF-β and Notch signaling pathways for the treatment of chronic wounds. Cell Commun Signal 2024; 22:244. [PMID: 38671406 PMCID: PMC11046856 DOI: 10.1186/s12964-024-01623-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 04/20/2024] [Indexed: 04/28/2024] Open
Abstract
Wound healing is a tightly regulated process that ensures tissue repair and normal function following injury. It is modulated by activation of pathways such as the transforming growth factor-beta (TGF-β), Notch, and Wnt/β-catenin signaling pathways. Dysregulation of this process causes poor wound healing, which leads to tissue fibrosis and ulcerative wounds. The Wnt/β-catenin pathway is involved in all phases of wound healing, primarily in the proliferative phase for formation of granulation tissue. This review focuses on the role of the Wnt/β-catenin signaling pathway in wound healing, and its transcriptional regulation of target genes. The crosstalk between Wnt/β-catenin, Notch, and the TGF-β signaling pathways, as well as the deregulation of Wnt/β-catenin signaling in chronic wounds are also considered, with a special focus on diabetic ulcers. Lastly, we discuss current and prospective therapies for chronic wounds, with a primary focus on strategies that target the Wnt/β-catenin signaling pathway such as photobiomodulation for healing diabetic ulcers.
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Affiliation(s)
- Dimakatso B Gumede
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
| | - Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa
| | - Nicolette N Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein, 2028, South Africa.
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Chen N, Wang H, Shao Y, Yang J, Song G. A Comparative Study on Platelet-Rich Plasma From Elderly Individuals and Young Adults to Treat Pressure Ulcers in Mice. J Surg Res 2024; 294:198-210. [PMID: 37913727 DOI: 10.1016/j.jss.2023.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 07/25/2023] [Accepted: 08/28/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVE The aim of the present study was to compare the therapeutic effects of activated platelet-rich plasma (PRP) prepared from elderly individuals and young adults to treat pressure ulcers (PUs), and to accumulate a theoretical basis for allogeneic PRP treatment of PUs in elderly patients. MATERIALS AND METHODS Whole blood was extracted from elderly individuals aged >65 y and young adult volunteers for PRP preparation, and platelet concentrations in whole blood and PRP were compared. Growth factors released from activated PRP were assayed using the enzyme-linked immunosorbent assay. C57BL/6 mice were divided into three groups: the control saline, elderly-PRP (Group A), and young adult-PRP (Group B). Ischemia-reperfusion injury-induced PUs were established on the backs of mice. PUs were photographed on days 0, 5, and 10 to assess their sizes. Specimens were collected on day 10 and subjected to hematoxylin and eosin and Masson's staining. Immunohistochemical staining for CD31 was conducted to evaluate vascular formation, and cell invasion was assessed using a Transwell assay. The action of PRP on transforming growth factor-beta (TGF-β)-dependent fibroblast activity and epithelial-mesenchymal transition was analyzed using immunofluorescence and Western blotting in vitro. RESULTS The platelet concentrations in whole blood and PRP of young adults were significantly higher than that in elderly individuals. The two PRP treatment groups had similar platelet enrichment coefficients of PRP. After activation, PRP from young adults produced significantly higher levels of platelet-derived growth factor, TGF-β, and vascular endothelial growth factor than PRP from elderly individuals (P < 0.05). The concentrations of platelet-derived growth factor, TGF-β, and vascular endothelial growth factor were positively correlated with the platelet concentrations in whole blood and PRP. The effects of PRP in regulating the expressions of TGF-β, α-smooth muscle actin, vimentin, and E-cadherin were observed in vivo and in vitro. The two PRP treatment groups exhibited better wound healing than the control group, as evidenced by more re-epithelialization, higher collagen content, skin fibrosis, and more blood vessel formation over time. Group B exhibited better wound healing than Group A (P < 0.05). CONCLUSION PRP exhibits potent wound healing ability in PU therapy, and PRP from young adults is seemingly superior to that from elderly individuals because of a higher concentration of platelets and increased production of growth factors.
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Affiliation(s)
- Ningjie Chen
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China; Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Shandong University, Weihai, Shandong, China
| | - Haitao Wang
- Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Shandong University, Weihai, Shandong, China
| | - Yang Shao
- Department of Burns and Orthopedic Surgery, Jinan Central Hospital, Shandong University, Jinan, Shandong, China
| | - Jincun Yang
- Department of Burns and Plastic Surgery, Weihai Municipal Hospital, Shandong University, Weihai, Shandong, China
| | - Guodong Song
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China; Department of Burns and Orthopedic Surgery, Jinan Central Hospital, Shandong University, Jinan, Shandong, China.
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Kwek MSY, Thangaveloo M, Madden LE, Phillips ARJ, Becker DL. Targeting Cx43 to Reduce the Severity of Pressure Ulcer Progression. Cells 2023; 12:2856. [PMID: 38132176 PMCID: PMC10741864 DOI: 10.3390/cells12242856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/07/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023] Open
Abstract
In the skin, repeated incidents of ischemia followed by reperfusion can result in the breakdown of the skin and the formation of a pressure ulcer. Here we gently applied paired magnets to the backs of mice to cause ischemia for 1.5 h and then removed them to allow reperfusion. The sterile inflammatory response generated within 4 h causes a stage 1 pressure ulcer with an elevation of the gap junction protein Cx43 in the epidermis. If this process is repeated the insult will result in a more severe stage 2 pressure ulcer with a breakdown of the epidermis 2-3 days later. After a single pinch, the elevation of Cx43 in the epidermis is associated with the inflammatory response with an increased number of neutrophils, HMGB1 (marker of necrosis) and RIP3 (responsible for necroptosis). Delivering Cx43 specific antisense oligonucleotides sub-dermally after a single insult, was able to significantly reduce the elevation of epidermal Cx43 protein expression and reduce the number of neutrophils and prevent the elevation of HMGB1 and RIP3. In a double pinch model, the Cx43 antisense treatment was able to reduce the level of inflammation, necroptosis, and the extent of tissue damage and progression to an open wound. This approach may be useful in reducing the progression of stage 1 pressure ulcers to stage 2.
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Affiliation(s)
- Milton Sheng Yi Kwek
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | - Moogaambikai Thangaveloo
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | - Leigh E. Madden
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
| | | | - David L. Becker
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore (M.T.); (L.E.M.)
- Skin Research Institute Singapore, Clinical Sciences Building, 11, Mandalay Road, Singapore 308232, Singapore
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Pan Y, Yang D, Zhou M, Liu Y, Pan J, Wu Y, Huang L, Li H. Advance in topical biomaterials and mechanisms for the intervention of pressure injury. iScience 2023; 26:106956. [PMID: 37378311 PMCID: PMC10291478 DOI: 10.1016/j.isci.2023.106956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023] Open
Abstract
Pressure injuries (PIs) are localized tissue damage resulting from prolonged compression or shear forces on the skin or underlying tissue, or both. Different stages of PIs share common features include intense oxidative stress, abnormal inflammatory response, cell death, and subdued tissue remodeling. Despite various clinical interventions, stage 1 or stage 2 PIs are hard to monitor for the changes of skin or identify from other disease, whereas stage 3 or stage 4 PIs are challenging to heal, painful, expensive to manage, and have a negative impact on quality of life. Here, we review the underlying pathogenesis and the current advances of biochemicals in PIs. We first discuss the crucial events involved in the pathogenesis of PIs and key biochemical pathways lead to wound delay. Then, we examine the recent progress of biomaterials-assisted wound prevention and healing and their prospects.
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Affiliation(s)
- Yingying Pan
- School of Nursing, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Dejun Yang
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Min Zhou
- School of Nursing, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yong Liu
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
| | - Jiandan Pan
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Yunlong Wu
- Engineering Research Center of Clinical Functional Materials and Diagnosis & Treatment Devices of Zhejiang Province, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Lijiang Huang
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
| | - Huaqiong Li
- Joint Research Centre on Medicine, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang 315700, China
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Putri IL, Tungga AAA, Pramanasari R, Wungu CDK. Characteristics of Patients with Pressure Injuries in a COVID-19 Referral Hospital. Adv Skin Wound Care 2023; 36:1-6. [PMID: 36940381 DOI: 10.1097/01.asw.0000919956.83713.ab] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Abstract
OBJECTIVE This retrospective study aimed to describe the characteristics of patients treated at a COVID-19 referral hospital from March 2020 to June 2021 who experienced pressure injuries (PIs) either before or after admission. METHODS The researchers collected and analyzed data on patients' demographic characteristics, symptoms, comorbidities, location and severity of PI, laboratory values, oxygen therapy, length of stay, and vasopressor use. RESULTS During the study period, 1,070 patients were hospitalized for COVID-19 with varying degrees of severity, and 12 patients were diagnosed with PI. Eight (66.7%) of the patients with PI were men. The median age was 60 (range, 51-71) years, and half of the patients had obesity. Eleven of the patients with PI (91.4%) had at least one comorbid condition. The sacrum and gluteus were the two most commonly affected sites. Those with stage 3 PI had a substantially greater median d-dimer value (7,900 ng/mL) than patients with stage 2 PI (1,100 ng/mL). The average length of stay was 22 (range, 9.8-40.3) days. CONCLUSIONS Health professionals should be aware of an increase in d-dimer in patients with COVID-19 and PI. Even though PIs in these patients might not result in mortality, an increase in morbidity can be avoided with the right care.
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Affiliation(s)
- Indri Lakhsmi Putri
- Indri Lakhsmi Putri, MD, PhD, is Plastic Surgeon, Plastic Reconstructive and Aesthetic Surgery Unit, Airlangga University Hospital, Surabaya, East Java, Indonesia, and Craniofacial Consultant, Department of Plastic Reconstructive and Aesthetic Surgery, Airlangga University. Also at Plastic Reconstructive and Aesthetic Surgery Unit, Airlangga University Hospital, Aldrich Alexander Afeli Tungga, MD, is Surgical Intern, and Rachmaniar Pramanasari, MD, is Plastic Surgeon. In the Faculty of Medicine at Airlangga University, Citrawati Dyah Kencono Wungu, MD, PhD, is Medical Staff, Department of Physiology and Medical Biochemistry
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Chang WP, Weng PW. Retrospective study on the factors influencing the severity of pressure injuries among intensive care unit patients. J Clin Nurs 2023; 32:243-252. [PMID: 35034404 DOI: 10.1111/jocn.16213] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/23/2021] [Accepted: 01/04/2022] [Indexed: 12/14/2022]
Abstract
AIMS AND OBJECTIVES This study investigated the factors of pressure injuries in patients in intensive care units (ICU). BACKGROUND Pressure injuries among patients in ICUs can be prevented by the early assessment of risk factors and taking appropriate preventative measures. DESIGN A retrospective study. METHODS ICU patients who suffered from pressure injuries between January 2016 and August 2018 at a hospital in Taiwan were selected. Patient medical histories and data associated with pressure injuries and medical treatment were collected from electronic medical records. A total of 256 patients were included in our analysis. The study adhered to the STROBE checklist. RESULTS A multivariate model of multinomial logistic regression analysis indicated that when compared to Stage 1 pressure injuries, Stage 2-4 pressure injuries were associated with albumin levels. Patients with lower albumin levels were at greater odds of Stage 2-4 pressure injuries than Stage 1 pressure injuries. In addition, when compared to unstageable pressure injuries or deep tissue injuries, Stage 1 pressure injuries were associated with the use of fentanyl and haemoglobin levels. Patients using fentanyl were more likely to suffer from unstageable pressure injuries, and those with lower haemoglobin levels were more likely to suffer from unstageable pressure injuries or deep tissue injuries. CONCLUSION When patients were simultaneously on ventilators and taking midazolam or fentanyl, the incidence of pressure injuries with greater severity became higher. Furthermore, ICU patients with lower albumin and haemoglobin levels were more likely to suffer from pressure injuries of greater severity. RELEVANCE TO CLINICAL PRACTICE For critically ill patients on ventilators, it is recommended to devise a means of assessing each patient daily as well as systematically reduce their dosage of midazolam or fentanyl. Furthermore, regularly monitoring albumin and haemoglobin levels to understand their nutritional status is necessary.
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Affiliation(s)
- Wen-Pei Chang
- Department of Nursing, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,School of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan
| | - Pei-Wei Weng
- Department of Orthopaedics, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Department of Orthopaedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
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Han M, Liang C, Liu Y, He X, Chu M. Integrated Transcriptome Analysis Reveals the Crucial mRNAs and miRNAs Related to Fecundity in the Hypothalamus of Yunshang Black Goats during the Luteal Phase. Animals (Basel) 2022; 12:ani12233397. [PMID: 36496918 PMCID: PMC9738480 DOI: 10.3390/ani12233397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/27/2022] [Accepted: 11/30/2022] [Indexed: 12/07/2022] Open
Abstract
A normal estrus cycle is essential for the breeding of goats, and the luteal phase accounts for most of the estrus cycle. The corpus luteum (CL) formed during the luteal phase is a transient endocrine gland that is crucial for the reproductive cycle and pregnancy maintenance, and is controlled by many regulatory factors. However, the molecular mechanism of the hypothalamus effect on the reproductive performance of different litter sizes during the luteal phase of goats has not been elucidated. In this study, RNA-sequencing was used to analyze the mRNA and miRNA expression profiles of the hypothalamic tissues with the high-fecundity goats during the luteal phase (LP-HF) and low-fecundity goats during the luteal phase (LP-LF). The RNA-seq results found that there were 1963 differentially expressed genes (DEGs) (890 up-regulated and 1073 down-regulated). The miRNA-seq identified 57 differentially expressed miRNAs (DEMs), including 11 up-regulated and 46 down-regulated, of which 199 DEGs were predicted to be potential target genes of DEMs. Meanwhile, the functional enrichment analysis identified several mRNA-miRNA pairs involved in the regulation of the hypothalamic activity, such as the common target gene MEA1 of novel-miR-972, novel-miR-125 and novel-miR-403, which can play a certain role as a related gene of the reproductive development in the hypothalamic-pituitary-gonadal (HPG) axis and its regulated network, by regulating the androgen secretion. While another target gene ADIPOR2 of the novel-miR-403, is distributed in the hypothalamus and affects the reproductive system through a central role on the HPG axis and a peripheral role in the gonadal tissue. An annotation analysis of the DE miRNA-mRNA pairs identified targets related to biological processes, such as anion binding (GO:0043168) and small molecule binding (GO: 0036094). Subsequently, the KEGG(Kyoto Encyclopedia of Genes and Genomes) pathways were performed to analyze the miRNA-mRNA pairs with negatively correlated miRNAs. We found that the GnRH signaling pathway (ko04912), the estrogen signaling pathway (ko04915), the Fc gamma R-mediated phagocytosis (ko04666), and the IL-17 signaling pathway (ko04657), etc., were directly and indirectly associated with the reproductive process. These targeting interactions may be closely related to the reproductive performance of goats. The results of this study provide a reference for further research on the molecular regulation mechanism for the high fertility in goats.
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Affiliation(s)
- Miaoceng Han
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- College of Animal Science, Shanxi Agricultural University, Jinzhong 030801, China
| | - Chen Liang
- College of Animal Science, Shanxi Agricultural University, Jinzhong 030801, China
| | - Yufang Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaoyun He
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Mingxing Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Correspondence: ; Tel.: +86-010-62819850
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Qi J, Zhang J, Jia H, Guo X, Yue Y, Yuan Y, Yue T. Synthesis of silver/Fe 3O 4@chitosan@polyvinyl alcohol magnetic nanoparticles as an antibacterial agent for accelerating wound healing. Int J Biol Macromol 2022; 221:1404-1414. [PMID: 36089089 DOI: 10.1016/j.ijbiomac.2022.09.030] [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: 08/09/2022] [Revised: 09/01/2022] [Accepted: 09/05/2022] [Indexed: 11/28/2022]
Abstract
Bacterial infection causes wound inflammation and slows wound healing, posing a great threat to human health, which needs to explore more antibacterial nanobiomaterials to promote wound healing. Therefore, this study was conducted to develop low-cost silver/Fe3O4@Chitosan@polyvinyl alcohol (Ag/Fe3O4@CS@PVA) via a one-pot method to promote healing in bacteria-infected wounds. Scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and vibrating sample magnetometry (VSM) confirmed that Ag/Fe3O4@CS@PVA was successfully prepared. In vitro antibacterial experiments demonstrated strong antibacterial activity of Ag/Fe3O4@CS@PVA against Escherichia coli and Staphylococcus aureus. The Ag/Fe3O4@CS@PVA destroyed the bacterial cell membrane or internal structure, thus resulting in cell death for antibacterial effects. Cytotoxicity and hemolysis rate tests showed that Ag/Fe3O4@CS@PVA posed fine biocompatibility. In addition, in vivo assays confirmed that Ag/Fe3O4@CS@PVA not only promoted the healing of wound infection caused by bacteria, but also had no toxic effect on mouse organs. Therefore, the low-cost Ag/Fe3O4@CS@PVA nanocomposites have great potential in controlling 'bacterial' pathogen.
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Affiliation(s)
- Jianrui Qi
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China.
| | - Jie Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China.
| | - Hang Jia
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China.
| | - Xinyuan Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Yuan Yue
- Xi'an GaoXin No.1 High School, Xi'an 710119, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; Laboratory of Quality & Safety Risk Assessment for Agro-products (Yangling), Ministry of Agriculture, Yangling, 712100, China; College of Food Science and Techonology, Northwest University, Xi'an 710069, China.
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Silver-loaded carboxymethyl cellulose nonwoven sheet with controlled counterions for infected wound healing. Carbohydr Polym 2022; 286:119289. [DOI: 10.1016/j.carbpol.2022.119289] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 01/05/2023]
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Teplyakova O, Vinnik Y, Drobushevskaya A, Malinovskaya N, Kirichenko A, Ponedelnik D. Ozone improved the wound healing in type 2 diabetics via down-regulation of IL- 8, 10 and induction of FGFR expression. ACTA BIO-MEDICA : ATENEI PARMENSIS 2022; 93:e2022060. [PMID: 35546010 PMCID: PMC9171882 DOI: 10.23750/abm.v93i2.12291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/01/2021] [Indexed: 01/13/2023]
Abstract
Background and aim: We aimed to investigate the effect of ozonated autohaemotherapy (OA) on the wound healing, serum values of interleukin (IL) - 6, 8, 10, tumor necrosis factor-alpha (TNF-α), basic fibroblast growth factor (bFGF) and local expression of fibroblast growth factor receptors (FGFR) in type 2 diabetics with the acute soft-tissue infections. Methods: Patients in the first cohort (n-30) received a basic comprehensive treatment (BCT-group), and the second (n=28) also received OA (OA-group). Blood samples for ELISA and tissue specimens for the immunohistochemical examinations were collected at admission (day 0) and at the 9th day of inpatient treatment. Results: The additional using of OA has accelerated the timing of a single and the complete wound granulation and the timing to marginal epithelization, compared with the results of the standard treatment. The use of OA has significantly reduced the production of IL-8, 10 at 9th day. OA-group patients were characterized by consistently high levels of bFGF production in contrast to the BCT-group, where the decreasing in the serum bFGF level was observed. The maximum number of bFGFR - immunopositive labels was observed in OA-group out to 9th day (319,45 (249,90-348,43) versus baseline 192,65 (171,93-207,72), versus BCT-group 123,30 (105,23- 141,10), p<0,001). Conclusions: Application of OA in the complex treatment of the acute soft-tissue infections in diabetics makes it possible to achieve the significant reductions in the duration of the wound inflammation and regeneration phases by eliminating of overproduction of IL- 8, 10 and induction of expression of bFGF and its receptors. (www.actabiomedica.it)
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Affiliation(s)
- Olga Teplyakova
- Department of General Surgery named after Professor M. I. Gulman, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation.
| | - Yurii Vinnik
- Department of General Surgery named after Professor M. I. Gulman, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation.
| | - Anna Drobushevskaya
- Department of General Surgery named after Professor M. I. Gulman, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation; Center for collective use «Molecular & cell technologies», Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation .
| | - Natalia Malinovskaya
- Department of Biological Chemistry with the Course of Medical, Pharmaceutical and Toxicological Chemistry, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation; Research Institute of Molecular Medicine and Pathobiochemistry, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation; Center for collective use «Molecular & cell technologies», Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation.
| | - Andrey Kirichenko
- Department of Pathological Anatomy named after Professor P. G. Podzolkov, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation; Department of Pathological Anatomy, Clinical hospital «RZD-Medicine» city Krasnoyarsk, Krasnoyarsk, Russian Federation.
| | - Darya Ponedelnik
- Department of General Surgery named after Professor M. I. Gulman, Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk, Russian Federation.
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Stewart-McGuinness C, Platt CI, Ozols M, Goh B, Griffiths TW, Sherratt MJ. Defining the Protease and Protease Inhibitor (P/PI) Proteomes of Healthy and Diseased Human Skin by Modified Systematic Review. Biomolecules 2022; 12:475. [PMID: 35327667 PMCID: PMC8946613 DOI: 10.3390/biom12030475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/09/2022] [Accepted: 03/18/2022] [Indexed: 12/26/2022] Open
Abstract
Proteases and protease inhibitors (P/PIs) are involved in many biological processes in human skin, yet often only specific families or related groups of P/PIs are investigated. Proteomics approaches, such as mass spectrometry, can define proteome signatures (including P/PIs) in tissues; however, they struggle to detect low-abundance proteins. To overcome these issues, we aimed to produce a comprehensive proteome of all P/PIs present in normal and diseased human skin, in vivo, by carrying out a modified systematic review using a list of P/PIs from MEROPS and combining this with key search terms in Web of Science. Resulting articles were manually reviewed against inclusion/exclusion criteria and a dataset constructed. This study identified 111 proteases and 77 protease inhibitors in human skin, comprising the serine, metallo-, cysteine and aspartic acid catalytic families of proteases. P/PIs showing no evidence of catalytic activity or protease inhibition, were designated non-peptidase homologs (NPH), and no reported protease inhibitory activity (NRPIA), respectively. MMP9 and TIMP1 were the most frequently published P/PIs and were reported in normal skin and most skin disease groups. Normal skin and diseased skin showed significant overlap with respect to P/PI profile; however, MMP23 was identified in several skin disease groups, but was absent in normal skin. The catalytic profile of P/PIs in wounds, scars and solar elastosis was distinct from normal skin, suggesting that a different group of P/PIs is responsible for disease progression. In conclusion, this study uses a novel approach to provide a comprehensive inventory of P/PIs in normal and diseased human skin reported in our database. The database may be used to determine either which P/PIs are present in specific diseases or which diseases individual P/PIs may influence.
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Affiliation(s)
- Callum Stewart-McGuinness
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (C.S.-M.); (M.O.); (B.G.); (M.J.S.)
| | - Christopher I. Platt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (C.S.-M.); (M.O.); (B.G.); (M.J.S.)
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (C.S.-M.); (M.O.); (B.G.); (M.J.S.)
- Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton CB10 1SA, UK
- British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Brian Goh
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (C.S.-M.); (M.O.); (B.G.); (M.J.S.)
| | - Tamara W. Griffiths
- Centre for Dermatology Research, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9PL, UK;
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (C.S.-M.); (M.O.); (B.G.); (M.J.S.)
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12
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Baron MV, dos Santos MP, Werle TM, Scherer GD, Santos MMD, Dominguez LML, Brandenburg C, Feltez G, Sampaio AR, de Mello Pinto MV, Carvalho S, Meyer PF, Picariello F, Pacheco EF, Reinheimer IC, Sancho AG, da Costa BEP. Does COVID-19 infection increase the risk of pressure injury in critically ill patients?: A narrative review. Medicine (Baltimore) 2022; 101:e29058. [PMID: 35356924 PMCID: PMC10513310 DOI: 10.1097/md.0000000000029058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 02/24/2022] [Indexed: 02/02/2023] Open
Abstract
ABSTRACT Patients with severe COVID-19 may have endothelial dysfunction and a hypercoagulable state that can cause skin damage. In the presence of external pressure on the tissues, the local inflammatory process regulated by inflammatory cytokines can increase and prolong itself, contributing to the formation of pressure injury (PI). PI is defined as localized damage to the skin or underlying tissues. It usually occurs as a result of intense and/or prolonged pressure in combination with shear. The aim of the study is to perform a narrative review on the physiological evidence of increased risk in the development of PI in critically ill patients with COVID-19.In patients with severe COVID-19 a pattern of tissue damage consistent with complement-mediated microvascular injury was found in the lungs and skin of critically ill COVID-19 patients, suggesting sustained systemic activation of complement pathways. Theoretically, the same thrombogenic vascular changes related to COVID-19 that occur in the skin also occur in the underlying tissues, making patients less tolerant to the harmful effects of pressure and shear. Unlike the syndromes typical of acute respiratory illnesses and other pathologies that commonly lead to intensive care unit admission, COVID-19 and systemic viral spread show that local and systemic factors overlap. This fact may be justified by current epidemiological data showing that the prevalence of PI among intensive care unit patients with COVID-19 was 3 times higher than in those without COVID-19. This narrative review presents physiological evidence to suggesting an increased risk of developing PI in critically ill patients with COVID-19.
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Affiliation(s)
- Miriam Viviane Baron
- Correspondence: Miriam Viviane Baron, Graduate Program in Medicine and Health Sciences of the Pontifical Catholic University of Rio Grande do Sul (PUC/RS), Porto Alegre, Rio Grande do Sul 90619-900, Brazil (e-mail: ).
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13
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Kogan PS, Wirth F, Tomar A, Darr J, Teperino R, Lahm H, Dreßen M, Puluca N, Zhang Z, Neb I, Beck N, Luzius T, de la Osa de la Rosa L, Gärtner K, Hüls C, Zeidler R, Ramanujam D, Engelhardt S, Wenk C, Holdt LM, Mononen M, Sahara M, Cleuziou J, Hörer J, Lange R, Krane M, Doppler SA. Uncovering the molecular identity of cardiosphere-derived cells (CDCs) by single-cell RNA sequencing. Basic Res Cardiol 2022; 117:11. [PMID: 35258704 PMCID: PMC8902493 DOI: 10.1007/s00395-022-00913-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 01/31/2023]
Abstract
Cardiosphere-derived cells (CDCs) generated from human cardiac biopsies have been shown to have disease-modifying bioactivity in clinical trials. Paradoxically, CDCs' cellular origin in the heart remains elusive. We studied the molecular identity of CDCs using single-cell RNA sequencing (sc-RNAseq) in comparison to cardiac non-myocyte and non-hematopoietic cells (cardiac fibroblasts/CFs, smooth muscle cells/SMCs and endothelial cells/ECs). We identified CDCs as a distinct and mitochondria-rich cell type that shared biological similarities with non-myocyte cells but not with cardiac progenitor cells derived from human-induced pluripotent stem cells. CXCL6 emerged as a new specific marker for CDCs. By analysis of sc-RNAseq data from human right atrial biopsies in comparison with CDCs we uncovered transcriptomic similarities between CDCs and CFs. By direct comparison of infant and adult CDC sc-RNAseq data, infant CDCs revealed GO-terms associated with cardiac development. To analyze the beneficial effects of CDCs (pro-angiogenic, anti-fibrotic, anti-apoptotic), we performed functional in vitro assays with CDC-derived extracellular vesicles (EVs). CDC EVs augmented in vitro angiogenesis and did not stimulate scarring. They also reduced the expression of pro-apoptotic Bax in NRCMs. In conclusion, CDCs were disclosed as mitochondria-rich cells with unique properties but also with similarities to right atrial CFs. CDCs displayed highly proliferative, secretory and immunomodulatory properties, characteristics that can also be found in activated or inflammatory cell types. By special culture conditions, CDCs earn some bioactivities, including angiogenic potential, which might modify disease in certain disorders.
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Affiliation(s)
- Palgit-S. Kogan
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Felix Wirth
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Archana Tomar
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany ,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Jonatan Darr
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany ,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Raffaele Teperino
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany ,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Harald Lahm
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Martina Dreßen
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Nazan Puluca
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Zhong Zhang
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Irina Neb
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Nicole Beck
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Tatjana Luzius
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Luis de la Osa de la Rosa
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
| | - Kathrin Gärtner
- Research Unit Gene Vectors, Helmholtz Center Munich German Research Center for Environmental Health, Munich, Germany
| | - Corinna Hüls
- Research Unit Gene Vectors, Helmholtz Center Munich German Research Center for Environmental Health, Munich, Germany
| | - Reinhard Zeidler
- Research Unit Gene Vectors, Helmholtz Center Munich German Research Center for Environmental Health, Munich, Germany ,Department of Otorhinolaryngology, Klinikum der Universität (KUM), Munich, Germany
| | - Deepak Ramanujam
- DZHK (German Center for Cardiovascular Research)-Partner Site Munich Heart Alliance, Biedersteiner Straße 29, 80802 Munich, Germany ,Institute of Pharmacology and Toxicology, Technische Universität München, Biedersteiner Str. 29, 80802 Munich, Germany
| | - Stefan Engelhardt
- DZHK (German Center for Cardiovascular Research)-Partner Site Munich Heart Alliance, Biedersteiner Straße 29, 80802 Munich, Germany ,Institute of Pharmacology and Toxicology, Technische Universität München, Biedersteiner Str. 29, 80802 Munich, Germany
| | - Catharina Wenk
- Institute of Laboratory Medicine, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Lesca M. Holdt
- Institute of Laboratory Medicine, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Mimmi Mononen
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Makoto Sahara
- Department of Cell and Molecular Biology, Karolinska Institutet, 171 77 Stockholm, Sweden ,Department of Surgery, Yale University School of Medicine, CN06510 New Haven, CT USA
| | - Julie Cleuziou
- School of Medicine and Health, Department of Pediatric and Congenital Heart Surgery, Institute Insure, Technical University of Munich, Lazarettstraße 36, 80636 Munich, Germany
| | - Jürgen Hörer
- School of Medicine and Health, Department of Pediatric and Congenital Heart Surgery, Technical University of Munich, German Heart Center Munich, Lazarettstraße 36, 80636 Munich, Germany ,Division of Congenital and Pediatric Heart Surgery, University Hospital of Munich, Ludwig-Maximilians-Universität, Munich, Germany
| | - Rüdiger Lange
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany ,DZHK (German Center for Cardiovascular Research)-Partner Site Munich Heart Alliance, Biedersteiner Straße 29, 80802 Munich, Germany
| | - Markus Krane
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany ,DZHK (German Center for Cardiovascular Research)-Partner Site Munich Heart Alliance, Biedersteiner Straße 29, 80802 Munich, Germany ,Division of Cardiac Surgery, Department of Surgery, Yale University School of Medicine, New Haven, CT USA
| | - Stefanie A. Doppler
- School of Medicine and Health, Department of Cardiovascular Surgery, Institute Insure, Technical University of Munich, German Heart Center Munich, Lazarettstrasse 36, 80636 Munich, Germany
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14
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Li Y, Jiang S, Song L, Yao Z, Zhang J, Wang K, Jiang L, He H, Lin C, Wu J. Zwitterionic Hydrogel Activates Autophagy to Promote Extracellular Matrix Remodeling for Improved Pressure Ulcer Healing. Front Bioeng Biotechnol 2021; 9:740863. [PMID: 34692658 PMCID: PMC8531594 DOI: 10.3389/fbioe.2021.740863] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 08/31/2021] [Indexed: 11/13/2022] Open
Abstract
Pressure ulcer (PU) is a worldwide problem that is hard to heal because of its prolonged inflammatory response and impaired ECM deposition caused by local hypoxia and repeated ischemia/reperfusion. Our previous study discovered that the non-fouling zwitterionic sulfated poly (sulfobetaine methacrylate) (SBMA) hydrogel can improve PU healing with rapid ECM rebuilding. However, the mechanism of the SBMA hydrogel in promoting ECM rebuilding is unclear. Therefore, in this work, the impact of the SBMA hydrogel on ECM reconstruction is comprehensively studied, and the underlying mechanism is intensively investigated in a rat PU model. The in vivo data demonstrate that compared to the PEG hydrogel, the SBMA hydrogel enhances the ECM remolding by the upregulation of fibronectin and laminin expression as well as the inhibition of MMP-2. Further investigation reveals that the decreased MMP-2 expression of zwitterionic SBMA hydrogel treatment is due to the activation of autophagy through the inhibited PI3K/Akt/mTOR signaling pathway and reduced inflammation. The association of autophagy with ECM remodeling may provide a way in guiding the design of biomaterial-based wound dressing for chronic wound repair.
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Affiliation(s)
- Yuan Li
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shishuang Jiang
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Liwan Song
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhe Yao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Junwen Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Kangning Wang
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Liping Jiang
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Cai Lin
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
- Department of Burn, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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15
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Pulido T, Velarde MC, Alimirah F. The senescence-associated secretory phenotype: Fueling a wound that never heals. Mech Ageing Dev 2021; 199:111561. [PMID: 34411604 DOI: 10.1016/j.mad.2021.111561] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/29/2021] [Accepted: 08/12/2021] [Indexed: 12/15/2022]
Abstract
Wound healing is impaired with advanced age and certain chronic conditions, such as diabetes and obesity. Moreover, common cancer treatments, including chemotherapy and radiation, can cause unintended tissue damage and impair wound healing. Available wound care treatments are not always effective, as some wounds fail to heal or recur after treatment. Hence, a more thorough understanding of the pathophysiology of chronic, nonhealing wounds may offer new ideas for the development of effective wound care treatments. Cancers are sometimes referred to as wounds that never heal, sharing mechanisms similar to wound healing. We describe in this review how cellular senescence and the senescence-associated secretory phenotype (SASP) contribute to chronic wounds versus cancer.
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Affiliation(s)
- Tanya Pulido
- Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - Michael C Velarde
- Institute of Biology, College of Science, University of the Philippines Diliman, Quezon City, 1101, Philippines.
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16
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Versey Z, da Cruz Nizer WS, Russell E, Zigic S, DeZeeuw KG, Marek JE, Overhage J, Cassol E. Biofilm-Innate Immune Interface: Contribution to Chronic Wound Formation. Front Immunol 2021; 12:648554. [PMID: 33897696 PMCID: PMC8062706 DOI: 10.3389/fimmu.2021.648554] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/17/2021] [Indexed: 12/19/2022] Open
Abstract
Delayed wound healing can cause significant issues for immobile and ageing individuals as well as those living with co-morbid conditions such as diabetes, cardiovascular disease, and cancer. These delays increase a patient’s risk for infection and, in severe cases, can result in the formation of chronic, non-healing ulcers (e.g., diabetic foot ulcers, surgical site infections, pressure ulcers and venous leg ulcers). Chronic wounds are very difficult and expensive to treat and there is an urgent need to develop more effective therapeutics that restore healing processes. Sustained innate immune activation and inflammation are common features observed across most chronic wound types. However, the factors driving this activation remain incompletely understood. Emerging evidence suggests that the composition and structure of the wound microbiome may play a central role in driving this dysregulated activation but the cellular and molecular mechanisms underlying these processes require further investigation. In this review, we will discuss the current literature on: 1) how bacterial populations and biofilms contribute to chronic wound formation, 2) the role of bacteria and biofilms in driving dysfunctional innate immune responses in chronic wounds, and 3) therapeutics currently available (or underdevelopment) that target bacteria-innate immune interactions to improve healing. We will also discuss potential issues in studying the complexity of immune-biofilm interactions in chronic wounds and explore future areas of investigation for the field.
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Affiliation(s)
- Zoya Versey
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | | | - Emily Russell
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Sandra Zigic
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Katrina G DeZeeuw
- Department of Complex Continuing Care, Saint Vincent Hospital, Ottawa, ON, Canada
| | - Jonah E Marek
- Department of Complex Continuing Care, Saint Vincent Hospital, Ottawa, ON, Canada
| | - Joerg Overhage
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Edana Cassol
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada.,Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, ON, Canada
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17
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Wu J, Zhu J, Wu Q, An Y, Wang K, Xuan T, Zhang J, Song W, He H, Song L, Zheng J, Xiao J. Mussel-Inspired Surface Immobilization of Heparin on Magnetic Nanoparticles for Enhanced Wound Repair via Sustained Release of a Growth Factor and M2 Macrophage Polarization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2230-2244. [PMID: 33403850 DOI: 10.1021/acsami.0c18388] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient reconstruction of a fully functional skin after wounds requires multiple functionalities of wound dressing due to the complexity of healing. In these regards, topical administration of functionalized nanoparticles capable of sustainably releasing bioactive agents to the wound site may significantly accelerate wound repair. Among the various nanoparticles, superparamagnetic iron oxide (Fe3O4) nanoparticles gain increasing attractiveness due to their intrinsic response to an external magnetic field (eMF). Herein, based on the Fe3O4 nanoparticle, we developed a fibroblast growth factor (bFGF)-loaded Fe3O4 nanoparticle using a simple mussel-inspired surface immobilization method. This nanoparticle, named as bFGF-HDC@Fe3O4, could stabilize bFGF in various conditions and exhibited sustained release of bFGF. In addition, an in vitro study discovered that bFGF-HDC@Fe3O4 could promote macrophage polarization toward an anti-inflammatory (pro-healing) M2 phenotype especially under eMF. Further, in vivo full-thickness wound animal models demonstrated that bFGF-HDC@Fe3O4 could significantly accelerate wound healing through M2 macrophage polarization and increased cell proliferation. Therefore, this approach of realizing sustained the release of the growth factor with magnetically macrophage regulating behavior through modification of Fe3O4 nanoparticles offers promising potential to tissue-regenerative applications.
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Affiliation(s)
- Jiang Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Junyi Zhu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
- Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang 317000, P.R. China
| | - Qiuji Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Ying An
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Kangning Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Tengxiao Xuan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Junwen Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Wenxiang Song
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Liwan Song
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Jie Zheng
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Jian Xiao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
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18
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Glycocalyx disruption enhances motility, proliferation and collagen synthesis in diabetic fibroblasts. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1868:118955. [PMID: 33421533 DOI: 10.1016/j.bbamcr.2021.118955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 12/24/2020] [Accepted: 01/04/2021] [Indexed: 11/22/2022]
Abstract
Impaired wound healing represents one of the most debilitating side effects of Diabetes mellitus. Though the role of fibroblasts in wound healing is well-known, the extent to which their function is altered in the context of diabetes remains incompletely understood. Here, we address this question by comparing the phenotypes of healthy dermal fibroblasts (HDFs) and diabetic dermal fibroblasts (DDFs). We show that DDFs are more elongated but less motile and less contractile than HDFs. Reduced motility of DDFs is attributed to formation of larger focal adhesions stabilized by a bulky glycocalyx, associated with increased expression of the cell surface glycoprotein mucin 16 (MUC 16). Disruption of the glycocalyx not only restored DDF motility to levels comparable to that of HDFs, but also led to increased proliferation and collagen synthesis. Collectively, our results illustrate the influence of glycocalyx disruption on mechanics of diabetic fibroblasts relevant to cell motility.
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19
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Song YP, Wang L, Yuan BF, Shen HW, Du L, Cai JY, Chen HL. Negative-pressure wound therapy for III/IV pressure injuries: A meta-analysis. Wound Repair Regen 2020; 29:20-33. [PMID: 32989919 DOI: 10.1111/wrr.12863] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/24/2020] [Accepted: 09/09/2020] [Indexed: 10/23/2022]
Abstract
This meta-analysis was conducted to identify the potential benefits and the efficacy of negative-pressure wound therapy (NPWT) for III/IV pressure injuries (PIs) compared with standard wound care (SWC). Sixteen RCTs with 629 patients were included in our analysis. The methodological quality was assessed by the Cochrane Collaboration Tool. The outcomes included complete ulcer healing rate, wound healing time, pain score, the frequency of dressing change, hospitalization cost, the condition of the exudate, and the wound improvement. The percentage of healing rate was 61.45% for the NPWT group and 36.90% for SWC (95% CI: 1.32-1.70). There were significant differences in wound healing time (WMD = -16.47 days, 95% [CI (-22.36, - 10.59) days, P ≤ .001]). The pain score and hospitalization cost in NPWT was lower compared with SWC group (WMD = -2.39, 95% CI [-3.47, -1.30], P ≤ .001); (SMD = -2.55, 95% CI [-4.07, -1.03], P < .01). The frequency of dressing change in both NPWT groups was greatly reduced (SMD = -3.61, 95% [CI (-4.57, - 2.66) times, P ≤ .001]). Our meta-analysis indicated that NPWT was associated with greater improvements in improving PIs and shorting healing time for III/IV PIs. However, this conclusion needs to be confirmed by high-quality multicenter RCTs.
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Affiliation(s)
- Yi-Ping Song
- School of Medicine, Nantong University, Nantong, Jiangsu, P.R. China
| | - Lei Wang
- Information Department, The Third People's Hospital of Nantong, Nantong, Jiangsu, P.R. China
| | - Bao-Fang Yuan
- Nursing Department, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Hong-Wu Shen
- Nursing Department, Affiliated Hospital of Nantong University, Nantong, Jiangsu, P. R. China
| | - Lin Du
- School of Medicine, Nantong University, Nantong, Jiangsu, P.R. China
| | - Ji-Yu Cai
- School of Medicine, Nantong University, Nantong, Jiangsu, P.R. China
| | - Hong-Lin Chen
- School of Public Health, Nantong University, Nantong, Jiangsu, P.R. China
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20
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Affiliation(s)
- Amit Gefen
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Karen Ousey
- School of Human and Health Sciences, University of Huddersfield, Queensgate, West Yorkshire, UK
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Liubaviciute A, Ivaskiene T, Biziuleviciene G. Modulated mesenchymal stromal cells improve skin wound healing. Biologicals 2020; 67:1-8. [DOI: 10.1016/j.biologicals.2020.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/26/2020] [Accepted: 08/04/2020] [Indexed: 12/20/2022] Open
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22
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Budri AMV, Moore Z, Patton D, O'Connor T, Nugent L, Avsar P. Sub-epidermal moisture measurement: an evidence-based approach to the assessment for early evidence of pressure ulcer presence. Int Wound J 2020; 17:1615-1623. [PMID: 32683789 DOI: 10.1111/iwj.13437] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/27/2022] Open
Abstract
This paper aims to discuss the literature pertaining to early pressure-shear induced tissue damage detection, with emphasis on sub-epidermal moisture measurement (SEM). The current method for pressure detection is visual skin assessment (VSA); however, this method is fraught with challenges. Advances in early detection of pressure ulcers are reported in the literature and mainly involve measuring inflammation markers on weight-bearing anatomical areas in order to capture the first signs of tissue damage. One novel technique currently in use is SEM measurement. This biophysical marker is the product of plasma that leaks as a response to local inflammation arising due to pressure-shear induced damage over bony prominences. The early detection of tissue damage is beneficial in two different ways. First, it enables early intervention when the damage is still microscopic and reversible and, therefore, has the potential to prevent further aggravation of healthy surrounding tissue. This arises by avoiding the causation of the problem and stopping the knock-on effect of inflammation, especially when the rapid pressure ulceration pathway of deformation is in place. Second, when the slow ischaemic-reperfusion related mechanism is undergoing, cell death can be avoided when the problem is identified before the cell reaches the "death threshold," completely averting a pressure ulcer.
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Affiliation(s)
| | - Zena Moore
- School of Nursing and Midwifery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Declan Patton
- School of Nursing and Midwifery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Tom O'Connor
- School of Nursing and Midwifery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Linda Nugent
- School of Nursing and Midwifery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Pinar Avsar
- School of Nursing and Midwifery, Royal College of Surgeons in Ireland, Dublin, Ireland
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J Rgensen E, Hjerpe FB, Hougen HP, Bjarnsholt T, Berg LC, Jacobsen S. Histologic changes and gene expression patterns in biopsy specimens from bacteria-inoculated and noninoculated excisional body and limb wounds in horses healing by second intention. Am J Vet Res 2020; 81:276-284. [PMID: 32101041 DOI: 10.2460/ajvr.81.3.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate histologic changes and gene expression patterns in body and limb wounds in horses in response to bacterial inoculation. SAMPLE Wound biopsy specimens from 6 horses collected on days 7, 14, 21, and 27 after excisional wounds (20 wounds/horse) were created over the metacarpal and metatarsal region and lateral thoracic region (body) and then inoculated or not inoculated on day 4 with Staphylococcus aureus and Pseudomonas aeruginosa. PROCEDURES Specimens were histologically scored for the amount of inflammation, edema, angiogenesis, fibrosis organization, and epithelialization. Quantitative PCR assays were performed to quantify gene expression of 10 inflammatory, proteolytic, fibrotic, and hypoxia-related markers involved in wound healing. RESULTS Except for gene expression of interleukin-6 on day 27 and tumor necrosis factor-α on day 14, bacterial inoculation had no significant effect on histologic scores and gene expression. Gene expression of interleukin-1β and -6, serum amyloid A, and matrix metalloproteinase-9 was higher in limb wounds versus body wounds by day 27. Gene expression of cellular communication network factor 1 was higher in limb wounds versus body wounds throughout the observation period. CONCLUSIONS AND CLINICAL RELEVANCE The lack of clear markers of wound infection in this study reflected well-known difficulties in detecting wound infections in horses. Changes consistent with protracted inflammation were evident in limb wounds, and gene expression patterns of limb wounds shared similarities with those of chronic wounds in humans. Cellular communication network factor warrants further investigation and may be useful in elucidating the mechanisms underlying poor limb wound healing in horses.
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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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Thomé Lima AMC, da Silva Sergio LP, da Silva Neto Trajano LA, de Souza BP, da Motta Mendes JP, Cardoso AFR, Figueira CP, dos Anjos Tavares B, Figueira DS, Mencalha AL, Trajano ETL, de Souza da Fonseca A. Photobiomodulation by dual-wavelength low-power laser effects on infected pressure ulcers. Lasers Med Sci 2019; 35:651-660. [DOI: 10.1007/s10103-019-02862-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/16/2019] [Indexed: 12/12/2022]
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Wang J, Zeng XX, Cai W, Han ZB, Zhu LY, Liu JY, Xu JX. Safety and Efficacy of Placenta-Derived Mesenchymal Stem Cell Treatment for Diabetic Patients with Critical Limb Ischemia: A Pilot Study. Exp Clin Endocrinol Diabetes 2019; 129:542-548. [PMID: 31412379 DOI: 10.1055/a-0978-4972] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIM Diabetic foot has become the main cause of non-traumatic amputation. Stem cell therapy, especially mesenchymal stem cells (MSCs), holds a great promise as a therapy for diabetic foot with ischemia limb arterial disease. The aim of this pilot study is to evaluate the safety and efficacy of placenta-derived MSCs (P-MSCs) treatment for diabetic patients with critical limb ischemia (CLI). METHODS Four eligible diabetic patients with CLI were consecutively enrolled in this pilot study. On the base of the standard-of-care treatment, these patients accepted P-MSCs treatment by intramuscular injection for successive 3 times at an interval of 4 weeks, and the safety and efficacy of placenta-derived MSCs (P-MSCs) treatment were evaluated. RESULTS There were no serious adverse events during the period of P-MSCs injection and the 24-weeks follow-up period. The clinical ischemic features of patients were improved 24 weeks after P-MSCs treatment. The scores of resting pain and limb coldness significantly decreased, and pain-free walking distance significantly increased from baseline to 24 weeks after P-MSCs therapy. The resting ankle brachial index increased, but no statistically significant difference was found. The findings of magnetic resonance angiography showed the increase of collateral vessel formation in one patient, but there were no significant changes observed in the other patients. CONCLUSIONS The data in this pilot study indicated that multiple intramuscular P-MSCs injections may be a safe and effective alternative therapy for diabetic patients with CLI, and larger, placebo-controlled, perspective studies are needed to prove these results.
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Affiliation(s)
- Jiao Wang
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Xiang-Xia Zeng
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Wei Cai
- Department of Medical Genetics and Cell biology, Medical College of Nanchang University, Nanchang, P.R. China
| | - Zhi-Bo Han
- The Stem Cell Engineering Research Center of Jiangxi Province, Shangrao, P.R. China
| | - Ling-Yan Zhu
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Jian-Ying Liu
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
| | - Ji-Xiong Xu
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, P.R. China
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Advanced drug delivery systems and artificial skin grafts for skin wound healing. Adv Drug Deliv Rev 2019; 146:209-239. [PMID: 30605737 DOI: 10.1016/j.addr.2018.12.014] [Citation(s) in RCA: 289] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 11/27/2018] [Accepted: 12/27/2018] [Indexed: 12/14/2022]
Abstract
Cutaneous injuries, especially chronic wounds, burns, and skin wound infection, require painstakingly long-term treatment with an immense financial burden to healthcare systems worldwide. However, clinical management of chronic wounds remains unsatisfactory in many cases. Various strategies including growth factor and gene delivery as well as cell therapy have been used to enhance the healing of non-healing wounds. Drug delivery systems across the nano, micro, and macroscales can extend half-life, improve bioavailability, optimize pharmacokinetics, and decrease dosing frequency of drugs and genes. Replacement of the damaged skin tissue with substitutes comprising cell-laden scaffold can also restore the barrier and regulatory functions of skin at the wound site. This review covers comprehensively the advanced treatment strategies to improve the quality of wound healing.
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Berhane CC, Brantley K, Williams S, Sutton E, Kappy C. An evaluation of dehydrated human amnion/chorion membrane allografts for pressure ulcer treatment: a case series. J Wound Care 2019; 28:S4-S10. [DOI: 10.12968/jowc.2019.28.sup5.s4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: Pressure ulcers (PU; also known as pressure injuries) affect about three million adults in the US and cost an estimated $11 billion dollars annually to treat. Prevention is most desirable, however, once a patient develops a PU, the focus shifts to effective treatment and rapid closure to improve health outcomes. We sought to evaluate outcomes in 10 patients with category II and III PUs treated with dehydrated human amnion/chorion membrane (dHACM) allografts. Method: All patients were treated with weekly application of dHACM plus standard wound care (SoC) and followed for eight weeks. Results: Of the PUs, two were category II and eight were category III. The average PU size at dHACM initiation was 3.42±1.76cm2. After the first application of dHACM 7/10 (70%) of PUs responded to treatment with a reduction in wound size. Within two weeks of dHACM initiation into the plan of care, 4/10 (40%) of PUs had reduced in size by >50%. By week four, 60% of PUs (6/10) had reduced in size by >50%. Overall, during the eight week evaluation period, 9/10 PUs reduced in size, three of which healed completely. Conclusion: dHACM allografts appear to be a viable treatment option for category II and III PUs.
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Affiliation(s)
- Chi Chi Berhane
- Department of Reconstructive Surgery, Shepherd Center, Atlanta, GA, US
| | - Kimberly Brantley
- Department of Reconstructive Surgery, Shepherd Center, Atlanta, GA, US
| | - Sandra Williams
- Department of Reconstructive Surgery, Shepherd Center, Atlanta, GA, US
| | - Erica Sutton
- Department of Reconstructive Surgery, Shepherd Center, Atlanta, GA, US
| | - Carlyn Kappy
- Department of Reconstructive Surgery, Shepherd Center, Atlanta, GA, US
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Beyazit F, Buyuk B. An immunohistochemistry and histopathological study of ankaferd blood stopper in a rat model of cervical inflammation. ACTA ACUST UNITED AC 2019; 65:183-190. [PMID: 30892442 DOI: 10.1590/1806-9282.65.2.183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/27/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Ankaferd Blood Stopper (ABS) is a medicinal plant extract used topically as a hemostatic, anti-inflammatory, and anti-oxidant agent. Its cytoprotective effect mainly depends on its pleiotropic properties by modulating inflammatory mediators such as IL-1β, IL-6, and TNF-α. This study aims to test the possible therapeutic effect of ABS in the treatment of erosive and inflammatory conditions occurring in the uterine cervix. METHODS Twenty-four female Wistar Albino rats were used in the present study. Trichloracetic acid was applied intravaginally to establish an experimental rat model of cervicitis. The rats were randomly divided into three groups: group I (injury), group II (injury+isotoinc saline), and group III (injury+ABS). After 3 estrous cycles of ABS and isotonic saline treatment, the amount of inflammation, vascular congestion and erosion were evaluated in the cervical tissues by using a modified semi-quantitative scale of 0-3. Immunohistochemical staining with monoclonal antibodies against IL-1β was also performed. RESULTS Compared with group I and II, the ABS group showed the least inflammatory cell infiltration, vascular congestion and cervical erosion, compared with the ABS group prominent IL-1β staining observed in group I and group II. CONCLUSION Our data suggest that ABS is a highly effective alternative to induce normal cervical epithelium and can be used safely in the treatment of cervical inflammation with or without cervical erosion.
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Affiliation(s)
- Fatma Beyazit
- Canakkale Onsekiz Mart Universitesi, Obstetrics and Gynecology, Merkez/ Canakkale, Canakkale, Turkey
| | - Basak Buyuk
- Canakkale Onsekiz Mart Universitesi, Department of Histology and Embryology, Merkez/ Canakkale, Canakkale, Turkey
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Böhm M, Luger T. Are melanocortin peptides future therapeutics for cutaneous wound healing? Exp Dermatol 2019; 28:219-224. [PMID: 30661264 DOI: 10.1111/exd.13887] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 10/29/2018] [Accepted: 11/20/2018] [Indexed: 12/11/2022]
Abstract
Cutaneous wound healing is a complex process divided into different phases, that is an inflammatory, proliferative and remodelling phase. During these phases, a variety of resident skin cell types but also cells of the immune system orchestrate the healing process. In the last year, it has been shown that the majority of cutaneous cell types express the melanocortin 1 receptor (MC1R) that binds α-melanocyte-stimulating hormone (α-MSH) with high affinity and elicits pleiotropic biological effects, for example modulation of inflammation and immune responses, cytoprotection, antioxidative defense and collagen turnover. Truncated α-MSH peptides such as Lys-Pro-Val (KPV) as well as derivatives like Lys-d-Pro-Thr (KdPT), the latter containing the amino acid sequence 193-195 of interleukin-1β, have been found to possess anti-inflammatory effects but to lack the pigment-inducing activity of α-MSH. We propose here that such peptides are promising future candidates for the treatment of cutaneous wounds and skin ulcers. Experimental approaches in silico, in vitro, ex vivo and in animal models are outlined. This is followed by an unbiased discussion of the pro and contra arguments of such peptides as future candidates for the therapeutic management of cutaneous wounds and a review of the so-far available data on melanocortin peptides and derivatives in wound healing.
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Affiliation(s)
- Markus Böhm
- Department of Dermatology, Laboratory for Neuroendocrinology of the Skin and Interdisciplinary Endocrinology, University of Münster, Münster, Germany
| | - Thomas Luger
- Department of Dermatology, Laboratory for Neuroendocrinology of the Skin and Interdisciplinary Endocrinology, University of Münster, Münster, Germany
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Yang LL, Peng WX, Wang CQ, Li Q. Elevated Risk of Infections after Spinal Cord Surgery in Relation to Preoperative Pressure Ulcers: a Follow-up Study. Sci Rep 2018; 8:14027. [PMID: 30232345 PMCID: PMC6145896 DOI: 10.1038/s41598-018-32157-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/03/2018] [Indexed: 11/24/2022] Open
Abstract
Factors associated with infections after spinal cord surgery were not fully understood. This study aimed to evaluate whether preoperative pressure ulcers was a risk factor of infections after spinal cord operation. A 1:1 matched follow-up study was performed in a tertiary referral center in southwest China between 2010 and 2015. Risk ratios (RRs) and 95% confidence intervals (CIs) were calculated using unconditional logistic regression analysis. A total of 334 patients with spinal cord surgery were recruited (167 patients with preoperative pressure ulcers and 167 patients without preoperative pressure ulcers). Participants previously exposed to pressure ulcers had an elevated risk of infections post spinal cord operation including surgical site infection (RR: 2.3, 95% CI: 1.1, 4.7), pneumonia (RR: 2.4, 95% CI: 1.1,5.3), urinary tract infection (RR: 2.8, 95% CI: 1.1, 7.3), any kinds of postoperative infections (RR: 3.4, 95% CI: 2.1, 5.6) and 30-day postoperative hospitalization for infections (RR: 2.6, 95% CI: 1.1, 6.0). The associations between preoperative pressure ulcers in stage III to IV and postoperative infections were also pronounced, but towards null in stage I to II. The study showed an increased risk of infections after spinal cord surgery in patients with preoperative pressure ulcers, indicative of an urgent need for monitoring postoperative infections and medical treatment for patients with pressure sores.
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Affiliation(s)
- Lei-Luo Yang
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, NO 28 Guiyi Street, Guiyang, Guizhou, 550001, China
| | - Wu-Xun Peng
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, NO 28 Guiyi Street, Guiyang, Guizhou, 550001, China
| | - Chun-Qing Wang
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, NO 28 Guiyi Street, Guiyang, Guizhou, 550001, China
| | - Qing Li
- Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, NO 28 Guiyi Street, Guiyang, Guizhou, 550001, China.
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Makrantonaki E, Wlaschek M, Scharffetter-Kochanek K. Pathogenesis of wound healing disorders in the elderly. J Dtsch Dermatol Ges 2017; 15:255-275. [PMID: 28252848 DOI: 10.1111/ddg.13199] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 12/21/2016] [Indexed: 12/25/2022]
Abstract
The elderly constitute the age group most susceptible to wound healing disorders and chronic wounds, the most prevalent being venous leg ulcers, pressure ulcers, and diabetic foot ulcers. However, other age-associated diseases should also be taken into consideration in the diagnostic workup of chronic wounds, and not be underestimated. A better understanding of the pathomechanisms involved in the wound healing process is of key importance in combatting the difficulties associated with the treatment of chronic wounds. In recent decades, considerable progress has been made in the development of pioneering therapeutic strategies for chronic wounds. In this context, the use of growth factors and cytokines, tissue engineering, and cell therapy - including stem cells - have proven very promising. Nevertheless, prior to their introduction into routine clinical practice, large controlled clinical trials are required to assess the safety of these techniques.
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Affiliation(s)
| | - Meinhard Wlaschek
- Department of Dermatology and Allergic Diseases, University Medical Center Ulm
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33
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Noske K. Secreted immunoregulatory proteins in the skin. J Dermatol Sci 2017; 89:3-10. [PMID: 29111181 DOI: 10.1016/j.jdermsci.2017.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 01/25/2023]
Abstract
The skin, thought initially to protect the body passively from pathogenic organisms and other environmental insults, is now recognised additionally as a sophisticated immune organ that actively regulates local immunity. Studies linking local innate and adaptive immunity to skin health and disease have revealed a complex network of cell communication and cytokine signalling. Here, we review the last 10 years of literature on this topic, and its relevance to skin immunity.
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Affiliation(s)
- Katharina Noske
- The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba 4102, QLD, Australia.
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34
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Makrantonaki E, Wlaschek M, Scharffetter-Kochanek K. Pathogenese von Wundheilungsstörungen bei älteren Patienten. J Dtsch Dermatol Ges 2017; 15:255-278. [DOI: 10.1111/ddg.13199_g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 12/21/2016] [Indexed: 01/13/2023]
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Molecular finds of pressure ulcer: A bioinformatics approach in pressure ulcer. J Tissue Viability 2017; 26:119-124. [PMID: 28188042 DOI: 10.1016/j.jtv.2017.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/29/2016] [Accepted: 01/26/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Understanding the biological processes underlying Pressure Ulcer (PU) is an important strategy to identify new molecular targets. Bioinformatics has emerged as an important screening tool for a broad range of diseases. OBJECTIVE This study aim of the current study is to investigate the protein-protein interaction in the PU context by bioinformatics. METHODS We performed a search in gene databases, and bioinformatics algorithms were used to generate molecular targets for PU based in silico investigation. Interactions networks between protein-coding genes were built and compared to skin. RESULTS TNFA, MMP9, and IL10 genes have higher disease-related connectivity than a connectivity general global. MAGOH, UBC, and PTCH1 as were leader genes related to skin. Ontological analysis demonstrated different mechanisms associated, such as response to oxidase stress. CONCLUSION TNFA, MMP9, and IL10 are possible therapeutic targets for pressure ulcer. Additional investigation of cell post-transcriptional machinery should be investigated in PU.
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Sternal D, Wilczyński K, Szewieczek J. Pressure ulcers in palliative ward patients: hyponatremia and low blood pressure as indicators of risk. Clin Interv Aging 2016; 12:37-44. [PMID: 28096663 PMCID: PMC5207332 DOI: 10.2147/cia.s122464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Prevention strategies for pressure ulcer formation remain critical in patients with an advanced illness. We analyzed factors associated with the development of pressure ulcers in patients hospitalized in a palliative care ward setting. PATIENTS AND METHODS This study was a retrospective analysis of 329 consecutive patients with a mean age (± standard deviation) of 70.4±11.8 years (range: 30-96 years, median 70.0 years; 55.3% women), who were admitted to the Palliative Care Department between July 2012 and May 2014. RESULTS Patients were hospitalized for mean of 24.8±31.4 days (1-310 days, median 14 days). A total of 256 patients (77.8%) died in the ward and 73 patients (22.2%) were discharged. Two hundred and six patients (62.6%) did not develop pressure ulcers during their stay in the ward, 84 patients (25.5%) were admitted with pressure ulcers, and 39 patients (11.9%) developed pressure ulcers in the ward. Four factors assessed at admission appear to predict the development of pressure ulcers in the multivariate logistic regression model: Waterlow score (odds ratio [OR] =1.140, 95% confidence interval [CI] =1.057-1.229, P=0.001), transfer from other hospital wards (OR =2.938, 95% CI =1.339-6.448, P=0.007), hemoglobin level (OR =0.814, 95% CI =0.693-0.956, P=0.012), and systolic blood pressure (OR =0.976, 95% CI =0.955-0.997, P=0.023). Five other factors assessed during hospitalization appear to be associated with pressure ulcer development: mean evening body temperature (OR =3.830, 95% CI =1.729-8.486, P=0.001), mean Waterlow score (OR =1.194, 95% CI =1.092-1.306, P<0.001), the lowest recorded sodium concentration (OR =0.880, 95% CI =0.814-0.951, P=0.001), mean systolic blood pressure (OR =0.956, 95% CI =0.929-0.984, P=0.003), and the lowest recorded hemoglobin level (OR =0.803, 95% CI =0.672-0.960, P=0.016). CONCLUSION Hyponatremia and low blood pressure may contribute to the formation of pressure ulcers in patients with an advanced illness.
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Affiliation(s)
- Danuta Sternal
- Department of Nursing and Paramedical Sciences, Faculty of Health Sciences, University of Bielsko-Biala, Bielsko-Biala
| | - Krzysztof Wilczyński
- Department of Geriatrics, School of Health Sciences in Katowice, Medical University of Silesia, Katowice, Poland
| | - Jan Szewieczek
- Department of Geriatrics, School of Health Sciences in Katowice, Medical University of Silesia, Katowice, Poland
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Withycombe C, Purdy K, Maddocks S. Micro-management: curbing chronic wound infection. Mol Oral Microbiol 2016; 32:263-274. [DOI: 10.1111/omi.12174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2016] [Indexed: 01/21/2023]
Affiliation(s)
- C. Withycombe
- Department of Biomedical Sciences; Cardiff School of Health Sciences; Cardiff Metropolitan University; Cardiff UK
| | - K.J. Purdy
- School of Life Sciences; University of Warwick; Coventry UK
| | - S.E. Maddocks
- Department of Biomedical Sciences; Cardiff School of Health Sciences; Cardiff Metropolitan University; Cardiff UK
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Ashrafi M, Sebastian A, Shih B, Greaves N, Alonso-Rasgado T, Baguneid M, Bayat A. Whole genome microarray data of chronic wound debridement prior to application of dermal skin substitutes. Wound Repair Regen 2016; 24:870-875. [DOI: 10.1111/wrr.12460] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/27/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Mohammed Ashrafi
- Plastic and Reconstructive Surgery Research, Centre for Dermatological Research, Institute of Inflammation and Repair, University of Manchester; Manchester United Kingdom
| | - Anil Sebastian
- Plastic and Reconstructive Surgery Research, Centre for Dermatological Research, Institute of Inflammation and Repair, University of Manchester; Manchester United Kingdom
| | - Barbara Shih
- Plastic and Reconstructive Surgery Research, Centre for Dermatological Research, Institute of Inflammation and Repair, University of Manchester; Manchester United Kingdom
| | - Nicholas Greaves
- Plastic and Reconstructive Surgery Research, Centre for Dermatological Research, Institute of Inflammation and Repair, University of Manchester; Manchester United Kingdom
| | - Teresa Alonso-Rasgado
- Bioengineering Group, School of Materials; University of Manchester; Manchester United Kingdom
| | - Mohamed Baguneid
- Wythenshawe Hospital; University Hospital South Manchester NHS Foundation Trust; Manchester United Kingdom
| | - Ardeshir Bayat
- Plastic and Reconstructive Surgery Research, Centre for Dermatological Research, Institute of Inflammation and Repair, University of Manchester; Manchester United Kingdom
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Nayyer L, Jell G, Esmaeili A, Birchall M, Seifalian AM. A Biodesigned Nanocomposite Biomaterial for Auricular Cartilage Reconstruction. Adv Healthc Mater 2016; 5:1203-12. [PMID: 26992039 DOI: 10.1002/adhm.201500968] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/22/2016] [Indexed: 12/31/2022]
Abstract
Current biomaterials for auricular replacement are associated with high rates of infection and extrusion. The development of new auricular biomaterials that mimic the mechanical properties of native tissue and promote desirable cellular interactions may prevent implant failure. A porous 3D nanocomposite scaffold (NS) based on POSS-PCU (polyhedral oligomeric silsesquioxane nanocage into polycarbonate based urea-urethane) is developed with an elastic modulus similar to native ear. In vitro biological interactions on this NS reveal greater protein adsorption, increased fibroblast adhesion, proliferation, and collagen production compared with Medpor (the current synthetic auricular implant). In vivo, the POSS-PCU with larger pores (NS2; 150-250 μm) have greater tissue ingrowth (≈5.8× and ≈1.4 × increase) than the POSS-PCU with smaller pores (NS1; 100-50 μm) and when compared to Medpor (>100 μm). The NS2 with the larger pores demonstrates a reduced fibrotic encapsulation compared with NS1 and Medpor (≈4.1× and ≈1.6×, respectively; P < 0.05). Porosity also influences the amount of neovascularization within the implants, with no blood vessel observed in NS1 (12 weeks postimplantation). The lack of chronic inflammatory response for all materials may indicate that the elastic modulus and pore size of the implant scaffold could be important design considerations for influencing fibrotic responses to auricular and other soft tissue implants.
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Affiliation(s)
- Leila Nayyer
- Division of Surgery and Interventional Science; University College London; London WC1E 6BT UK
| | - Gavin Jell
- Division of Surgery and Interventional Science; University College London; London WC1E 6BT UK
| | - Ali Esmaeili
- Division of Surgery and Interventional Science; University College London; London WC1E 6BT UK
- Department of Plastic and Reconstructive Surgery; Royal Free Hampstead NHS Trust Hospital; London NW3 2QG UK
| | - Martin Birchall
- The Ear Institute; University College London; London WC1E 6BT UK
| | - Alexander M. Seifalian
- Division of Surgery and Interventional Science; University College London; London WC1E 6BT UK
- Department of Plastic and Reconstructive Surgery; Royal Free Hampstead NHS Trust Hospital; London NW3 2QG UK
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Moore Z, Patton D, Rhodes SL, O'Connor T. Subepidermal moisture (SEM) and bioimpedance: a literature review of a novel method for early detection of pressure-induced tissue damage (pressure ulcers). Int Wound J 2016; 14:331-337. [PMID: 27126794 PMCID: PMC7949650 DOI: 10.1111/iwj.12604] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/21/2016] [Accepted: 03/29/2016] [Indexed: 02/03/2023] Open
Abstract
Current detection of pressure ulcers relies on visual and tactile changes at the skin surface, but physiological changes below the skin precede surface changes and have a significant impact on tissue health. Inflammatory and apoptotic/necrotic changes in the epidermal and dermal layers of the skin, such as changes in interstitial fluid (also known as subepidermal moisture (SEM)), may precede surface changes by 3–10 days. Those same epidermal and subepidermal changes result in changes in the electrical properties (bioimpedance) of the tissue, thereby presenting an objective, non‐invasive method for assessing tissue damage. Clinical studies of bioimpedance for the detection of pressure ulcers have demonstrated that changes in bioimpedance correlate with increasing severity of pressure ulcer stages. Studies have also demonstrated that at anatomical locations with pressure ulcers, bioimpedance varies with distance from the centre of the pressure ulcers. The SEM Scanner, a handheld medical device, offers an objective and reliable method for the assessment of local bioimpedance, and therefore, assessment of tissue damage before signs become visible to the unaided eye. This literature review summarises pressure ulcer pathophysiology, principles of bioimpedance and clinical research using bioimpedance technology to assess pressure ulcers.
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Affiliation(s)
- Zena Moore
- Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Declan Patton
- Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | - Tom O'Connor
- Royal College of Surgeons in Ireland, Dublin, Ireland
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Pierobon D, Raggi F, Cambieri I, Pelassa S, Occhipinti S, Cappello P, Novelli F, Musso T, Eva A, Castagnoli C, Varesio L, Giovarelli M, Bosco MC. Regulation of Langerhans cell functions in a hypoxic environment. J Mol Med (Berl) 2016; 94:943-55. [PMID: 26960761 DOI: 10.1007/s00109-016-1400-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 01/31/2016] [Accepted: 02/16/2016] [Indexed: 12/23/2022]
Abstract
UNLABELLED Langerhans cells (LCs) are a specialized dendritic cell subset that resides in the epidermis and mucosal epithelia and is critical for the orchestration of skin immunity. Recent evidence suggest that LCs are involved in aberrant wound healing and in the development of hypertrophic scars and chronic wounds, which are characterized by a hypoxic environment. Understanding LCs biology under hypoxia may, thus, lead to the identification of novel pathogenetic mechanisms of wound repair disorders and open new therapeutic opportunities to improve wound healing. In this study, we characterize a previously unrecognized role for hypoxia in significantly affecting the phenotype and functional properties of human monocyte-derived LCs, impairing their ability to stimulate naive T cell responses, and identify the triggering receptor expressed on myeloid (TREM)-1, a member of the Ig immunoregulatory receptor family, as a new hypoxia-inducible gene in LCs and an activator of their proinflammatory and Th1-polarizing functions in a hypoxic environment. Furthermore, we provide the first evidence of TREM-1 expression in vivo in LCs infiltrating hypoxic areas of active hypertrophic scars and decubitous ulcers, pointing to a potential pathogenic role of this molecule in wound repair disorders. KEY MESSAGES Hypoxia modulates surface molecule expression and cytokine profile in Langerhans cells. Hypoxia impairs human Langerhans cell stimulatory activity on naive T cells. Hypoxia selectively induces TREM-1 expression in human Langerhans cells. TREM-1 engagement stimulates Langerhans cell inflammatory and Th1-polarizing activity. TREM-1 is expressed in vivo in Langerhans cells infiltrating hypoxic skin lesions.
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Affiliation(s)
- Daniele Pierobon
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- CERMS, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Federica Raggi
- Laboratory of Molecular Biology, G.Gaslini Institute, Genova, Italy
| | - Irene Cambieri
- Department of Reconstructive Plastic Surgery, Burns Centre and Skin Bank, Trauma Center, Torino, Italy
| | - Simone Pelassa
- Laboratory of Molecular Biology, G.Gaslini Institute, Genova, Italy
| | - Sergio Occhipinti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- CERMS, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Paola Cappello
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- CERMS, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Francesco Novelli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- CERMS, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Tiziana Musso
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy
| | - Alessandra Eva
- Laboratory of Molecular Biology, G.Gaslini Institute, Genova, Italy
| | - Carlotta Castagnoli
- Department of Reconstructive Plastic Surgery, Burns Centre and Skin Bank, Trauma Center, Torino, Italy
| | - Luigi Varesio
- Laboratory of Molecular Biology, G.Gaslini Institute, Genova, Italy.
- Laboratorio di Biologia Molecolare, Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova Quarto, Italy.
| | - Mirella Giovarelli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- CERMS, AOU Città della Salute e della Scienza di Torino, Torino, Italy
| | - Maria Carla Bosco
- Laboratory of Molecular Biology, G.Gaslini Institute, Genova, Italy.
- Laboratorio di Biologia Molecolare, Istituto Giannina Gaslini, Padiglione 2, L.go G.Gaslini 5, 16147, Genova Quarto, Italy.
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Decker CG, Wang Y, Paluck SJ, Shen L, Loo JA, Levine AJ, Miller LS, Maynard HD. Fibroblast growth factor 2 dimer with superagonist in vitro activity improves granulation tissue formation during wound healing. Biomaterials 2016; 81:157-168. [PMID: 26731578 PMCID: PMC4715972 DOI: 10.1016/j.biomaterials.2015.12.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/04/2015] [Accepted: 12/11/2015] [Indexed: 01/13/2023]
Abstract
Site-specific chemical dimerization of fibroblast growth factor 2 (FGF2) with the optimal linker length resulted in a FGF2 homodimer with improved granulation tissue formation and blood vessel formation at exceptionally low concentrations. Homodimers of FGF2 were synthesized through site-specific linkages to both ends of different molecular weight poly(ethylene glycols) (PEGs). The optimal linker length was determined by screening dimer-induced metabolic activity of human dermal fibroblasts and found to be that closest to the inter-cysteine distance, 70 Å, corresponding to 2 kDa PEG. A straightforward analysis of the kinetics of second ligand binding as a function of tether length showed that, as the polymerization index (the number of monomer repeat units in the polymer, N) of the tether decreases, the mean time for second ligand capture decreases as ∼N(3/2), leading to an enhancement of the number of doubly bound ligands in steady-state for a given (tethered) ligand concentration. FGF2-PEG2k-FGF2 induced greater fibroblast metabolic activity than FGF2 alone, all other dimers, and all monoconjugates, at each concentration tested, with the greatest difference observed at low (0.1 ng/mL) concentration. FGF2-PEG2k-FGF2 further exhibited superior activity compared to FGF2 for both metabolic activity and migration in human umbilical vein endothelial cells, as well as improved angiogenesis in a coculture model in vitro. Efficacy in an in vivo wound healing model was assessed in diabetic mice. FGF2-PEG2k-FGF2 increased granulation tissue and blood vessel density in the wound bed compared to FGF2. The results suggest that this rationally designed construct may be useful for improving the fibroblast matrix formation and angiogenesis in chronic wound healing.
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Affiliation(s)
- Caitlin G Decker
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States
| | - Yu Wang
- Department of Dermatology, Johns Hopkins University School of Medicine, 1550 Orleans St., Baltimore, MD 21231, United States
| | - Samantha J Paluck
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States
| | - Lu Shen
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States
| | - Joseph A Loo
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States; Department of Biological Chemistry, David Geffen School of Medicine, and UCLA/DOE Institute of Genomics and Proteomics, University of California, Los Angeles, CA 90095, United States
| | - Alex J Levine
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States; Department of Physics and Astronomy, University of California, Los Angeles, CA 90095-1569, United States; Department of Biomathematics, University of California, Los Angeles, CA 90095-1569, United States
| | - Lloyd S Miller
- Department of Dermatology, Johns Hopkins University School of Medicine, 1550 Orleans St., Baltimore, MD 21231, United States
| | - Heather D Maynard
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive South, Los Angeles, CA 90095-1569, United States.
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Cha BH, Jung MJ, Moon BK, Kim JS, Ma Y, Arai Y, Noh M, Shin JY, Kim BS, Lee SH. Administration of tauroursodeoxycholic acid enhances osteogenic differentiation of bone marrow-derived mesenchymal stem cells and bone regeneration. Bone 2016; 83:73-81. [PMID: 26499839 DOI: 10.1016/j.bone.2015.10.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/24/2015] [Accepted: 10/20/2015] [Indexed: 01/06/2023]
Abstract
It is known that osteogenic differentiation of mesenchymal stem cells (MSCs) can be promoted by suppression of adipogenesis of MSCs. We have recently found that the chemical chaperone tauroursodeoxycholic acid (TUDCA) significantly reduces adipogenesis of MSCs. In the present study, we examined whether TUDCA can promote osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMMSCs) by regulating Integrin 5 (ITGA5) associated with activation of ERK1/2 signal pathway and thereby enhance bone tissue regeneration by reducing apoptosis and the inflammatory response. TUDCA treatment promoted in vitro osteogenic differentiation of BMMSCs and in vivo bone tissue regeneration in a calvarial defect model, as confirmed by micro-computed tomography, histological staining, and immunohistochemistry for osteocalcin. In addition, TUDCA treatment significantly decreased apoptosis and the inflammatory response in vivo and in vitro, which is important to enhance bone tissue regeneration. These results indicate that TUDCA plays a critical role in enhancing osteogenesis of BMMSCs, and is therefore a potential alternative drug for bone tissue regeneration.
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Affiliation(s)
- Byung-Hyun Cha
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam-si, Republic of Korea
| | - Moon-Joo Jung
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Bo-Kyung Moon
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam-si, Republic of Korea
| | - Jin-Su Kim
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam-si, Republic of Korea
| | - Yoonji Ma
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Yoshie Arai
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam-si, Republic of Korea
| | - Myungkyung Noh
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Jung-Youn Shin
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Byung-Soo Kim
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, Republic of Korea; School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea; Bio-MAX Institute, Institute for Chemical Processes, Seoul National University, Seoul 151-744, Republic of Korea.
| | - Soo-Hong Lee
- Department of Biomedical Science, College of Life Science, CHA University, Seongnam-si, Republic of Korea.
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Lee SY, Chou CL, Hsu SPC, Shih CC, Yeh CC, Hung CJ, Chen TL, Liao CC. Outcomes after Stroke in Patients with Previous Pressure Ulcer: A Nationwide Matched Retrospective Cohort Study. J Stroke Cerebrovasc Dis 2015; 25:220-7. [PMID: 26500174 DOI: 10.1016/j.jstrokecerebrovasdis.2015.09.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/15/2015] [Accepted: 09/19/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Factors associated with poststroke adverse events were not completely understood. The purpose of this study was to investigate whether stroke patients with previous pressure ulcers had more adverse events after stroke. METHODS Using the claims data from Taiwan's National Health Insurance Research Database, we conducted a retrospective cohort study matched by propensity score. Three thousand two first-ever stroke patients with previous pressure ulcer and 3002 first-ever stroke patients without pressure ulcer were investigated between 2002 and 2009. Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) of complications and 30-day mortality after stroke associated with previous pressure ulcer were calculated in the multivariate logistic regressions. RESULTS Patients with pressure ulcer had significantly higher risk than control for poststroke urinary tract infection (OR: 1.56, 95% CI: 1.38-1.78), pneumonia (OR: 1.35, 95% CI: 1.16-1.58), gastrointestinal bleeding (OR: 1.31, 95% CI: 1.04-1.66), and epilepsy (OR: 1.84, 95% CI: 1.83-1.85). Stroke patients with pressure ulcer had increased 30-day poststroke mortality (OR: 2.01, 95% CI: 1.55-2.61), particularly in those treated with debridement (OR: 2.87, 95% CI: 1.85-4.44) or high quantity of antibiotics (OR: 4.01, 95% CI: 2.10-7.66). Pressure ulcer was associated with poststroke mortality in both genders and patients aged 60 years or older. CONCLUSIONS This study showed increased poststroke complications and mortality in patients with previous pressure ulcer, which suggests the urgent need for monitoring stroke patients for pressure ulcer history.
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Affiliation(s)
- Shang-Yi Lee
- Department of Anesthesiology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chia-Lun Chou
- Department of Dermatology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Sanford P C Hsu
- Neurosurgery Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chun-Chuan Shih
- School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung, Taiwan; Ph.D. Program for Clinical Drug Discovery from Botanical Herbs, Taipei Medical University, Taipei, Taiwan
| | - Chun-Chieh Yeh
- Department of Surgery, China Medical University Hospital, Taichung, Taiwan; Department of Surgery, University of Illinois, Chicago, Illinois
| | - Chih-Jen Hung
- Department of Anesthesiology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ta-Liang Chen
- School of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Anaesthesiology, Taipei Medical University Hospital, Taipei, Taiwan; Health Policy Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chien-Chang Liao
- School of Medicine, Taipei Medical University, Taipei, Taiwan; Department of Anaesthesiology, Taipei Medical University Hospital, Taipei, Taiwan; Health Policy Research Center, Taipei Medical University Hospital, Taipei, Taiwan; School of Chinese Medicine, China Medical University, Taichung, Taiwan.
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Bhattacharya S, Mishra RK. Pressure ulcers: Current understanding and newer modalities of treatment. Indian J Plast Surg 2015; 48:4-16. [PMID: 25991879 PMCID: PMC4413488 DOI: 10.4103/0970-0358.155260] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This article reviews the mechanism, symptoms, causes, severity, diagnosis, prevention and present recommendations for surgical as well as non-surgical management of pressure ulcers. Particular focus has been placed on the current understandings and the newer modalities for the treatment of pressure ulcers. The paper also covers the role of nutrition and pressure-release devices such as cushions and mattresses as a part of the treatment algorithm for preventing and quick healing process of these wounds. Pressure ulcers develop primarily from pressure and shear; are progressive in nature and most frequently found in bedridden, chair bound or immobile people. They often develop in people who have been hospitalised for a long time generally for a different problem and increase the overall time as well as cost of hospitalisation that have detrimental effects on patient's quality of life. Loss of sensation compounds the problem manifold, and failure of reactive hyperaemia cycle of the pressure prone area remains the most important aetiopathology. Pressure ulcers are largely preventable in nature, and their management depends on their severity. The available literature about severity of pressure ulcers, their classification and medical care protocols have been described in this paper. The present treatment options include various approaches of cleaning the wound, debridement, optimised dressings, role of antibiotics and reconstructive surgery. The newer treatment options such as negative pressure wound therapy, hyperbaric oxygen therapy, cell therapy have been discussed, and the advantages and disadvantages of current and newer methods have also been described.
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Affiliation(s)
- Surajit Bhattacharya
- Department of Plastic & Reconstructive Surgery, Sahara Hospital, Lucknow, Uttar Pradesh, India
| | - R K Mishra
- Department of Plastic & Reconstructive Surgery, SIPS Hospital, Lucknow, Uttar Pradesh, India
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Nagai K, Matsumaru K, Hirai I, Takae Y, Andoh K. New therapy using omega-3-Acid ethyl esters for decubitus ulcers and stasis dermatitis: a case report. IRANIAN RED CRESCENT MEDICAL JOURNAL 2014; 16:e19500. [PMID: 25763242 PMCID: PMC4341250 DOI: 10.5812/ircmj.19500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 09/25/2014] [Accepted: 10/07/2014] [Indexed: 02/05/2023]
Abstract
Introduction: In daily practice, it is common to experience difficulty in treating decubitus ulcers (pressure ulcers, also known as decubitus ulcers) and stasis dermatitis of the lower limbs. We hereby report that omega-3-acid ethyl esters were remarkably effective when administered to cases of refractory pressure ulcers and stasis dermatitis for the purpose of improving the blood flow and promoting blood circulation. Case Presentation: Case 1: A 21-year-old Japanese female with lower-body paralysis. Pressure ulcers appeared on the heel and first toe of her left lower extremity. Although the patient had been treated with various ointments such as dimethyl isopropylazulene and 0.9% iodine-containing ointment, the course showed no improvement, so omega-3-acid ethyl esters was administered orally, completely healing the ulcer of the first toe in 10 weeks. Case 2: A 76-year-old Japanese male. The patient had been treated on an outpatient basis for 15 years due to hypertension, heart failure, type 2 diabetes mellitus, and hyperlipidemia. Two years prior to this presentation, stasis dermatitis occurred in the lower limbs and at the end of last year, erosive ulcers appeared on the front part of the lower-right thigh and shin. Although treatment with various topical ointment and dressings was performed, the course showed no improvement. Oral administration of omega-3-acid ethyl esters was initiated. At 12 weeks, his condition entered the white phase and healed almost completely. Conclusions: This report is the first to document other treatment possibilities for pressure ulcer and/or stasis dermatitis in cases where the use of topical applied ointments and medications is difficult. This new therapy may therefore help physicians to treat pressure ulcers and stasis dermatitis.
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Affiliation(s)
- Kazuki Nagai
- Department of Internal Medicine, Nagai Clinic, Yokohama, Japan
- Corresponding Author: Kazuki Nagai, Department of Internal Medicine, Nagai Clinic, P. O. Box: 2350045, Yokohama, Japan. Tel/Fax: +81-458325830, E-mail:
| | | | - Ikuko Hirai
- Department of Dermatology, Saiseikai Yokohama-shi Nanbu Hospital, Yokohama, Japan
| | - Yujiro Takae
- Department of Dermatology, Saiseikai Yokohama-shi Nanbu Hospital, Yokohama, Japan
| | - Kazuo Andoh
- Department of Radiology, Saiseikai Yokohama-shi Nanbu Hospital, Yokohama, Japan
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Allison DJ, Ditor DS. Immune dysfunction and chronic inflammation following spinal cord injury. Spinal Cord 2014; 53:14-8. [PMID: 25366531 DOI: 10.1038/sc.2014.184] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 09/24/2014] [Accepted: 09/28/2014] [Indexed: 01/07/2023]
Abstract
STUDY DESIGN Review article. OBJECTIVES The objective of this study is to provide an overview of the many factors that contribute to the chronic inflammatory state typically observed following spinal cord injury (SCI). METHODS Literature review. RESULTS Not applicable. CONCLUSION SCI is typically characterized by a low-grade inflammatory state due to a number of factors. As bidirectional communication exists between the nervous, endocrine and immune systems, damage to the spinal cord may translate into both endocrinal and immune impairment. Damage to the autonomic nervous system may induce immune dysfunction directly, through the loss of neural innervation of lymphoid organs, or indirectly by inducing endocrinal impairment. In addition, damage to the somatic nervous system and the corresponding loss of motor and sensory function increases the likelihood of developing a number of secondary health complications and metabolic disorders associated with a state of inflammation. Lastly, numerous related disorders associated with a state of chronic inflammation have been found to be at a substantially higher prevalence following SCI. Together, such factors help explain the chronic inflammatory state and immune impairment typically observed following SCI. An understanding of the interactions between systems, both in health and disease, and the many causes of chronic inflammation may aid in the effective future treatment of immune dysfunction and related disorders following SCI.
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Affiliation(s)
- D J Allison
- Department of Kinesiology, Faculty of Applied Health Science, Brock University, St. Catharines, ON, Canada
| | - D S Ditor
- Department of Kinesiology, Faculty of Applied Health Science, Brock University, St. Catharines, ON, Canada
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