scholarly journals Keratin-Alginate Sponges Support Healing of Partial-Thickness Burns

2021 ◽  
Vol 22 (16) ◽  
pp. 8594
Author(s):  
Zi Kuang Moay ◽  
Luong T. H. Nguyen ◽  
Pietradewi Hartrianti ◽  
Declan P. Lunny ◽  
David Leavesley ◽  
...  
Keyword(s):  
Subsequent Development ◽  
Dermal Fibroblasts ◽  
Basement Membranes ◽  
Human Dermal Fibroblasts ◽  
Suitable Alternative ◽  
Dermal Substitutes ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
Partial Thickness Burns

Deep partial-thickness burns damage most of the dermis and can cause severe pain, scarring, and mortality if left untreated. This study serves to evaluate the effectiveness of crosslinked keratin–alginate composite sponges as dermal substitutes for deep partial-thickness burns. Crosslinked keratin–alginate sponges were tested for the ability to support human dermal fibroblasts in vitro and to support the closure and healing of partial-thickness burn wounds in Sus scrofa pigs. Keratin–alginate composite sponges supported the enhanced proliferation of human dermal fibroblasts compared to alginate-only sponges and exhibited decreased contraction in vitro when compared to keratin only sponges. As dermal substitutes in vivo, the sponges supported the expression of keratin 14, alpha-smooth muscle actin, and collagen IV within wound sites, comparable to collagen sponges. Keratin–alginate composite sponges supported the regeneration of basement membranes in the wounds more than in collagen-treated wounds and non-grafted controls, suggesting the subsequent development of pathological scar tissues may be minimized. Results from this study indicate that crosslinked keratin–alginate sponges are suitable alternative dermal substitutes for clinical applications in wound healing and skin regeneration.

In vitro adhesion of human dermal fibroblasts on iron cross-linked alginate films

2009 ◽  
Vol 4 (2) ◽  
pp. 025008 ◽  
Author(s):  
Ikuko Machida-Sano ◽  
Yasushi Matsuda ◽  
Hideo Namiki
Keyword(s):  
Dermal Fibroblasts ◽  
Human Dermal Fibroblasts ◽  
In Vitro Adhesion

scholarly journals Protective Effect of Sulfated Polysaccharides from Celluclast-Assisted Extract of Hizikia fusiforme Against Ultraviolet B-Induced Skin Damage by Regulating NF-κB, AP-1, and MAPKs Signaling Pathways In Vitro in Human Dermal Fibroblasts

Marine Drugs ◽  
2018 ◽  
Vol 16 (7) ◽  
pp. 239 ◽  
Author(s):  
Lei Wang ◽  
WonWoo Lee ◽  
Jae Oh ◽  
Yong Cui ◽  
BoMi Ryu ◽  
...  
Keyword(s):  
Protective Effect ◽  
Signaling Pathways ◽  
Dermal Fibroblasts ◽  
Sulfated Polysaccharides ◽  
Dependent Manner ◽  
Human Dermal Fibroblasts ◽  
Skin Damage ◽  
Hizikia Fusiforme ◽  
Hdf Cells

Our previous study evaluated the antioxidant activities of sulfated polysaccharides from Celluclast-assisted extract of Hizikia fusiforme (HFPS) in vitro in Vero cells and in vivo in zebrafish. The results showed that HFPS possesses strong antioxidant activity and suggested the potential photo-protective activities of HFPS. Hence, in the present study, we investigated the protective effects of HFPS against ultraviolet (UV) B-induced skin damage in vitro in human dermal fibroblasts (HDF cells). The results indicate that HFPS significantly reduced intracellular reactive oxygen species (ROS) level and improved the viability of UVB-irradiated HDF cells in a dose-dependent manner. Furthermore, HFPS significantly inhibited intracellular collagenase and elastase activities, remarkably protected collagen synthesis, and reduced matrix metalloproteinases (MMPs) expression by regulating nuclear factor kappa B (NF-κB), activator protein 1 (AP-1), and mitogen-activated protein kinases (MAPKs) signaling pathways in UVB-irradiated HDF cells. These results suggest that HFPS possesses strong UV protective effect, and can be a potential ingredient in the pharmaceutical and cosmetic industries.

Fabrication, characterization and evaluation of the efficacy of gelatin/hyaluronic acid microporous scaffolds suffused with aloe-vera in a rat burn model

2021 ◽  
pp. 088532822110618
Author(s):  
Lalita Mehra ◽  
Smritee Mehra ◽  
Nidhi Tiwari ◽  
Thakuri Singh ◽  
Harish Rawat ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Growth Factor ◽  
Aloe Vera ◽  
Gamma Scintigraphy ◽  
Gravimetric Analysis ◽  
Burn Wounds ◽  
Partial Thickness ◽  
Partial Thickness Burn

Burn induced injuries are commonly encountered in civilian and military settings, leading to severe morbidity and mortality. Objective of this study was to construct microporous bioactive scaffolds of gelatin-hyaluronic acid suffused with aloe-vera gel (Gela/HA/AvG), and to evaluate their efficacy in healing partial-thickness burn wounds. Scaffolds were characterized using Fourier transform-infrared spectroscopy, Scanning electron microscopy, and Thermo-gravimetric analysis to understand intermolecular interactions and morphological characteristics. In-vitro fluid uptake ability and hemolytic index of test scaffolds were also determined. In-vitro collagenase digestion was done to assess biodegradability of scaffolds. Wound retraction studies were carried out in Sprague Dawley rats inflicted with partial-thickness burn wounds to assess and compare efficacy of optimized scaffolds with respect to negative and positive control groups. In-vivo gamma scintigraphy using Technetium-99m labeled Immunoglobulin-G ( 99m Tc-IgG) as imaging agent was also performed to validate efficacy results. Histological and immunohistochemical comparison between groups was also made. Scaffolds exhibited mircoporous structure, with pore size getting reduced from 41.3 ± 4.3 µm to 30.49 ± 5.7 µm when gelatin conc. was varied from 1% to 5%. Optimized test scaffolds showed sustained in-vitro swelling behavior, were biodegradable and showed hemolytic index in range of 2.4–4.3%. Wound retraction study along with in-vivo gamma scintigraphy indicated that Gela/HA/AvG scaffolds were not only able to reduce local inflammation faster but also accelerated dermis regeneration. Immunohistochemical analysis, in terms of expression levels of epidermal growth factor and fibroblast growth factor-2 also corroborated in-vivo efficacy findings. Gela/HA/AvG scaffolds, therefore, can potentially be developed into an effective dermal regeneration template for partial-thickness burn wounds.

Photobiomodulation with 590 nm Wavelength Delays the Telomere Shortening and Replicative Senescence of Human Dermal Fibroblasts In Vitro

2020 ◽  
Vol 38 (11) ◽  
pp. 656-660
Author(s):  
Borislav Arabadjiev ◽  
Roumen Pankov ◽  
Ivelina Vassileva ◽  
Lyuben Sashov Petrov ◽  
Ivan Buchvarov
Keyword(s):  
Replicative Senescence ◽  
Dermal Fibroblasts ◽  
Human Dermal Fibroblasts ◽  
Telomere Shortening

scholarly journals The use of a non-medicated dressing for superficial-partial thickness burns in children: a case series and review

2019 ◽  
Vol 5 ◽  
pp. 205951311989695
Author(s):  
Ter-Er Kusu-Orkar ◽  
Umar Islam ◽  
Benjamin Hall ◽  
Evan Araia ◽  
Nikki Allorto
Keyword(s):  
Antimicrobial Properties ◽  
Case Series ◽  
Length Of Hospital Stay ◽  
Hot Water ◽  
Secondary Outcome ◽  
Wound Complications ◽  
Burn Wounds ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
Partial Thickness Burns

Background: Cutimed® Sorbact® is a dressing marketed as having antimicrobial properties and easy application without the threat of antibiotic resistance and difficult accessibility. There is little evidence on the clinical outcomes of the use of Cutimed® Sorbact® in adults and currently no evidence of use of Cutimed® Sorbact® on superficial-partial thickness burn injuries in children. Objective: To summarise the clinical outcome of burn wounds in children with superficial-partial thickness burns in which Cutimed® Sorbact® was used. Method: An observational case series was conducted in Edendale Hospital, Pietermaritzburg, South Africa over the course of four weeks. Patients where included if they were aged < 10 years and had a ⩽ 15% superficial-partial burn. The primary outcome measure was time to 95% re-epithelialisation. Secondary outcome measures included wound complications, adverse healing and number of dressing changes. Results: Ten patients (five girls, five boys; age range = 11 months–8 years) were included in this case series. All participants had a type VI Fitzpatrick skin type and 80% of burns were hot water burns. Of all patients treated with Cutimed® Sorbact®, 50% healed within seven days, 70% within 14 days and 100% within 21 days. There was only one wound complication noted in this study and there was no adverse healing in any burn wounds. The mean number of dressing changes was 1.4 (range = 1–2) and length of hospital stay was in the range of 0–11 days (mean = 5.1 days). Conclusion: Cutimed® Sorbact® is a safe, useful and cost-effective dressing that should be used as an alternative for superficial-partial burns in children.

The Role of Autologous PRP on Deep Partial-Thickness Burn Wound Healing in Bama Pigs

2020 ◽  
Vol 41 (3) ◽  
pp. 657-662 ◽  
Author(s):  
Yanwei Sun ◽  
Yongqian Cao ◽  
Ran Zhao ◽  
Famei Xu ◽  
Dan Wu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Growth Factors ◽  
Growth Factor ◽  
Healing Process ◽  
Control Group ◽  
Therapeutic Effects ◽  
Partial Thickness ◽  
Partial Thickness Burn ◽  
The Mean ◽  
Partial Thickness Burns

Abstract In this study, we aimed to evaluate the therapeutic effects of autologous platelet-rich plasma (PRP) on deep partial-thickness burns in Bama pigs. Deep partial-thickness burn wounds were created on the back of Bama pigs. The reepithelialization time was compared between the PRP and control groups. The mean score of Ki67 (+) cells and α-SMA (+) vessels, the mean thickness of epidermis and dermis of the healing wounds were determined via H&E staining and immunohistochemical assay. The levels of the growth factors epidermal growth factor (EGF), basic fibroblast growth factor (bFGF), and vascular endothelial growth factor (VEGF) were examined by ELISA. Our data showed that the time to wound reepithelialization was shorter in the PRP group compared with the control group. The thickness of the epidermis was larger in the PRP group compared with the control group. On the 7th and 14th days after the treatment, the mean score of Ki67 (+) cells and α-SMA (+) vessels were higher in the PRP group compared with the control group. The PRP group showed higher levels of growth factors (EGF, bFGF, and VEGF) compared with the control group by ELISA. The results indicated that PRP could improve wound healing process of deep partial-thickness burns in Bama pigs. The PRP increased the thickness of epidermis of the healed wounds, cell proliferation, and angiogenesis. We demonstrated that applying PRP had a greater potential for the treatment of deep partial-thickness burns.

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