Self-Assembled Nanomaterials for Chronic Skin Wound Healing

Impaired wound healing is one of the unsolved problems of modern medicine, affecting patients’ quality of life and causing serious economic losses. Impaired wound healing can manifest itself in the form of chronic skin wounds or hypertrophic scars. Research on the biology and physiology of skin wound healing disorders is actively continuing, but, unfortunately, a single understanding has not been developed. The attention of clinicians to the biological and physiological aspects of wound healing in the skin is necessary for the search for new and effective methods of prevention and treatment of its consequences. In addition, it is important to update knowledge about genetic and non-genetic factors predisposing to impaired wound healing in order to identify risk levels and develop personalized strategies for managing such patients. Wound healing is a very complex process involving several overlapping stages and involving many factors. This thematic review focuses on the extracellular matrix of the skin, in particular its role in wound healing. The authors analyzed the results of fundamental research in recent years, finding promising potential for their transition into real clinical practice.

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Fibroblasts within concentrated collagen hydrogels favour chronic skin wound healing

Journal of Tissue Engineering and Regenerative Medicine ◽

10.1002/term.420 ◽

2011 ◽

Vol 6 (3) ◽

pp. 225-237 ◽

Cited By ~ 37

Author(s):

Christophe Helary ◽

Mylène Zarka ◽

Marie Madeleine Giraud-Guille

Keyword(s):

Wound Healing ◽

Skin Wound ◽

Skin Wound Healing ◽

Collagen Hydrogels ◽

Chronic Skin

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Topical Administration of Heat-Killed Enterococcus faecalis Strain KH2 Promotes Re-Epithelialization and Granulation Tissue Formation during Skin Wound-Healing

Biomedicines ◽

10.3390/biomedicines9111520 ◽

2021 ◽

Vol 9 (11) ◽

pp. 1520

Author(s):

Hiromasa Tanno ◽

Emi Kanno ◽

Shiho Kurosaka ◽

Yukari Oikawa ◽

Takumi Watanabe ◽

...

Keyword(s):

Wound Healing ◽

Growth Factor ◽

Therapeutic Potential ◽

Topical Administration ◽

Skin Wound ◽

Skin Wound Healing ◽

Beneficial Effects ◽

Growth Factor Production ◽

Chronic Skin ◽

Tgf Β1

Lactic acid bacteria (LAB) are known to have beneficial effects on immune responses when they are orally administered as bacterial products. Although the beneficial effects of LAB have been reported for the genera Lactobacillus and Lactococcus, little has been uncovered on the effects of the genus Enterococcus on skin wound-healing. In this study, we aimed to clarify the effect of heat-killed Enterococcus faecalis KH2 (heat-killed KH2) strain on the wound-healing process and to evaluate the therapeutic potential in chronic skin wounds. We analyzed percent wound closure, re-epithelialization, and granulation area, and cytokine and growth factor production. We found that heat-killed KH2 contributed to the acceleration of re-epithelialization and the formation of granulation tissue by inducing tumor necrosis factor-α, interleukin-6, basic fibroblast growth factor, transforming growth factor (TGF)-β1, and vascular endothelial growth factor production. In addition, heat-killed KH2 also improved wound closure, which was accompanied by the increased production of TGF-β1 in diabetic mice. Topical administration of heat-killed KH2 might have therapeutic potential for the treatment of chronic skin wounds in diabetes mellitus. In the present study, we concluded that heat-killed KH2 promoted skin wound-healing through the formation of granulation tissues and the production of inflammatory cytokines and growth factors.

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Donut-like MOFs of copper/nicotinic acid and composite hydrogels with superior bioactivity for rh-bFGF delivering and skin wound healing

Journal of Nanobiotechnology ◽

10.1186/s12951-021-01014-z ◽

2021 ◽

Vol 19 (1) ◽

Author(s):

Tian-Long Wang ◽

Zi-Fei Zhou ◽

Jun-Feng Liu ◽

Xiao-Dong Hou ◽

Zhi Zhou ◽

...

Keyword(s):

Wound Healing ◽

Nicotinic Acid ◽

Skin Wound ◽

Elastic Fibers ◽

Solvothermal Reaction ◽

Skin Wound Healing ◽

Antibacterial Ability ◽

Skin Ulcers ◽

Chronic Skin

Abstract Background Skin injury and the resultant defects are common clinical problems, and usually lead to chronic skin ulcers and even life-threatening diseases. Copper, an essential trace element of human body, has been reported to promote the regeneration of skin by stimulating proliferation of endothelial cell and enhance angiogenesis. Results Herein, we have prepared a new donut-like metal–organic frameworks (MOF) of copper-nicotinic acid (CuNA) by a simple solvothermal reaction. The rough surface of CuNA is beneficial for loading/release basic fibroblast growth factor (bFGF). The CuNAs with/without bFGF are easily processed into a light-responsive composite hydrogel with GelMA, which not only show excellent mechanical properties, but also display superior biocompatibility, antibacterial ability and bioactivity. Moreover, in the in vivo full-thickness defect model of skin wound, the resultant CuNA-bFGF@GelMA hydrogels significantly accelerate the wound healing, by simultaneously inhibiting the inflammatory response, promoting the new blood vessels formation and the deposition of collagen and elastic fibers. Conclusions Considering the superior biocompatibility, antibacterial ability and bioactivity, the CuNA and its composite light-responsive hydrogel system will be promising in the applications of skin and even other tissue regeneration. Graphic abstract

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Activity of mesenchymal stem cells in therapies for chronic skin wound healing

Organogenesis ◽

10.4161/org.27405 ◽

2013 ◽

Vol 10 (1) ◽

pp. 29-37 ◽

Cited By ~ 85

Author(s):

Austin Nuschke

Keyword(s):

Stem Cells ◽

Wound Healing ◽

Mesenchymal Stem Cells ◽

Skin Wound ◽

Skin Wound Healing ◽

Chronic Skin

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Skin wound healing in the first generation (F1) offspring of Yorkshire and red Duroc pigs: Evidence for genetic inheritance of wound phenotype

Yearbook of Surgery ◽

10.1016/s0090-3671(08)70054-5 ◽

2007 ◽

Vol 2007 ◽

pp. 63-64

Author(s):

D.W. Mozingo

Keyword(s):

Wound Healing ◽

First Generation ◽

Skin Wound ◽

Genetic Inheritance ◽

Skin Wound Healing

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Overexpression of the Oral Mucosa-Specific microRNA-31 Promotes Skin Wound Closure

International Journal of Molecular Sciences ◽

10.3390/ijms20153679 ◽

2019 ◽

Vol 20 (15) ◽

pp. 3679 ◽

Cited By ~ 3

Author(s):

Lin Chen ◽

Alyne Simões ◽

Zujian Chen ◽

Yan Zhao ◽

Xinming Wu ◽

...

Keyword(s):

Wound Healing ◽

Oral Mucosa ◽

Wound Closure ◽

Expression Patterns ◽

Skin Wound ◽

Skin Wound Healing ◽

Specific Expression ◽

Keratinocyte Proliferation

Wounds within the oral mucosa are known to heal more rapidly than skin wounds. Recent studies suggest that differences in the microRNAome profiles may underlie the exceptional healing that occurs in oral mucosa. Here, we test whether skin wound-healing can be accelerating by increasing the levels of oral mucosa-specific microRNAs. A panel of 57 differentially expressed high expresser microRNAs were identified based on our previously published miR-seq dataset of paired skin and oral mucosal wound-healing [Sci. Rep. (2019) 9:7160]. These microRNAs were further grouped into 5 clusters based on their expression patterns, and their differential expression was confirmed by TaqMan-based quantification of LCM-captured epithelial cells from the wound edges. Of these 5 clusters, Cluster IV (consisting of 8 microRNAs, including miR-31) is most intriguing due to its tissue-specific expression pattern and temporal changes during wound-healing. The in vitro functional assays show that ectopic transfection of miR-31 consistently enhanced keratinocyte proliferation and migration. In vivo, miR-31 mimic treatment led to a statistically significant acceleration of wound closure. Our results demonstrate that wound-healing can be enhanced in skin through the overexpression of microRNAs that are highly expressed in the privileged healing response of the oral mucosa.

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The Effect of a Polyester Nanofibrous Membrane with a Fibrin-Platelet Lysate Coating on Keratinocytes and Endothelial Cells in a Co-Culture System

Nanomaterials ◽

10.3390/nano11020457 ◽

2021 ◽

Vol 11 (2) ◽

pp. 457

Author(s):

Andreu Blanquer ◽

Jana Musilkova ◽

Elena Filova ◽

Johanka Taborska ◽

Eduard Brynda ◽

...

Keyword(s):

Wound Healing ◽

Endothelial Cells ◽

Chronic Wounds ◽

Human Keratinocytes ◽

Skin Wound ◽

Platelet Lysate ◽

Therapeutic Approaches ◽

Skin Wound Healing ◽

New Therapeutic Approaches ◽

Proliferation And Differentiation

Chronic wounds affect millions of patients worldwide, and it is estimated that this number will increase steadily in the future due to population ageing. The research of new therapeutic approaches to wound healing includes the development of nanofibrous meshes and the use of platelet lysate (PL) to stimulate skin regeneration. This study considers a combination of a degradable electrospun nanofibrous blend of poly(L-lactide-co-ε-caprolactone) and poly(ε-caprolactone) (PLCL/PCL) membranes (NF) and fibrin loaded with various concentrations of PL aimed at the development of bioactive skin wound healing dressings. The cytocompatibility of the NF membranes, as well as the effect of PL, was evaluated in both monocultures and co-cultures of human keratinocytes and human endothelial cells. We determined that the keratinocytes were able to adhere on all the membranes, and their increased proliferation and differentiation was observed on the membranes that contained fibrin with at least 50% of PL (Fbg + PL) after 14 days. With respect to the co-culture experiments, the membranes with fibrin with 20% of PL were observed to enhance the metabolic activity of endothelial cells and their migration, and the proliferation and differentiation of keratinocytes. The results suggest that the newly developed NF combined with fibrin and PL, described in the study, provides a promising dressing for chronic wound healing purposes.

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