scholarly journals Euglena gracilis and Its Aqueous Extract Constructed With Chitosan-Hyaluronic Acid Hydrogel Facilitate Cutaneous Wound Healing in Mice Without Inducing Excessive Inflammatory Response

Author(s):  
Jin Li ◽  
Zezhou Zheng ◽  
Ming Du ◽  
Jinchun Chen ◽  
Hui Zhu ◽  
...  

Naturally occurring compounds isolated from the microalga Euglena gracilis, such as polysaccharide paramylon, exhibit antimicrobial, anti-viral, antitumor, and anti-inflammatory activities. Whether live E. gracilis cells and its aqueous extract accelerate burn wound healing remains to be investigated. In this study, live E. gracilis cells and its aqueous extract were mixed with chitosan-hyaluronic acid hydrogel (CS/HA) to form cell + CS/HA and extract + CS/HA, which were then smeared onto the deeply burned skin of mice. The efficacy of these mixtures in accelerating wound healing was assessed through wound size reduction measurement, histological and immunofluorescence analyses, and serum pro-inflammatory cytokine level (INF-γ, IL-1β, and IL-6) determination. The live E. gracilis cells and its aqueous extract were found to facilitate wound healing by enhancing re-epithelization and reducing fibroplasia without stimulating excessive inflammatory response. In conclusion, live E. gracilis cells and its aqueous extract can be potentially used to treat cutaneous wounds.

Inflammation ◽  
2016 ◽  
Vol 39 (4) ◽  
pp. 1395-1404 ◽  
Author(s):  
Paulo C. L. Silveira ◽  
Karina B. Ferreira ◽  
Franciani R. da Rocha ◽  
Bruno L. S. Pieri ◽  
Giulia S. Pedroso ◽  
...  

2016 ◽  
Vol 17 (6) ◽  
pp. 820-826 ◽  
Author(s):  
Bahman Ebrahimi-Hosseinzadeh ◽  
Mirsepehr Pedram ◽  
Ashrafalsadat Hatamian-Zarmi ◽  
Soheila Salahshour-Kordestani ◽  
Mahtab Rasti ◽  
...  

Author(s):  
Sritharadol Rutthapol ◽  
Chunhachaichana Charisopon ◽  
Kumlungmak Sukanjana ◽  
Buatong Wilaiporn ◽  
Dechraksa Janwit ◽  
...  

ABSTRACT This study evaluated the effect of mupirocin topical spray on burn wound healing in a rat model. Fifteen male Sprague Dawley rats were used to create full-thickness burns on the rat dorsum using a cylindrical stainless steel rod. The rats were topically treated with normal saline solution (NSS), mupirocin spray, ointment, and solution. The wound size and morphological evaluation were investigated by photographs and clinical criterions for wound healing. The histology was observed by hematoxylin and eosin (HandE) staining assay. The immunohistochemical study was evaluated by detection of transforming growth factor-beta 1 (TGF-β1), and the ratio of matrix metalloproteinase-9 to the tissue inhibitor of matrix metalloproteinase-1 (MMP-9/TIMP-1) was quantified using the enzyme-linked immunosorbent assay (ELISA) assay. A complete healing was observed at 28 days in all treatments. Mupirocin formulations accelerated the wound healing faster than NSS in size. However, the clinical criteria indicated a desirable skin appearance in the mupirocin spray and ointment treated groups. The histological evaluations showed no differences between the treatments while the immunohistochemical study revealed that all treatments reduced the level of TGF-β1 over time, particularly on day 28 in the mupirocin spray and ointment treated groups. The MMP-9/TIMP-1 ratio was significantly lower in the mupirocin spray and ointment treated groups than in the NSS and mupirocin solution groups. This study shows the safety and efficacy in the use of mupirocin topical spray. The topical mupirocin spray is an alternative suitable for development as a human topical anti-infective and wound protection spray.


2019 ◽  
Vol 28 (3) ◽  
pp. 347-354 ◽  
Author(s):  
Michelle E. Carrière ◽  
Louise E. M. Haas ◽  
Anouk Pijpe ◽  
Annebeth Meij‐de Vries ◽  
Kim L. M. Gardien ◽  
...  

2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S126-S127
Author(s):  
Rebecca Coffey ◽  
Rachel Penny

Abstract Introduction Strategies to remove necrotic tissue from burn wounds include excisional and non-excisional debridement. Alternative treatments could promote burn wound healing while minimizing patient discomfort and the need for surgery. We evaluated the usage of a concentrated surfactant gel (CSG) to promote burn wound healing in those with indeterminate depth and full thickness burn injuries. Methods An IRB approved retrospective study was conducted during a 10-patient new product trial period with enrollment between September and October 2019. Patients included in this study had indeterminate or full thickness burn wounds and were treated with a concentrated surfactant-based gel. Patients with non-burn diagnoses were excluded. Data collected included demographic information, injury descriptors, and additional burn wound characteristics. Results A total of 10 patients were included in this study as part of a new product trial. The subjects were 80% male with an average TBSA of 7.5%. 40% had indeterminate and 60% had full thickness burn wounds. Prior to initiation of the CSG, the burn wounds had been open for an average of 41 days. There were no infections or complications with usage of the CSG. 90% of patients reported less pain than the standard of care topical agents for burns. Average duration of treatment with the CSG until healing was 28 days. After usage of the CSG, no patients required surgery. Conclusions Our findings support the usage of a concentrated surfactant-based gel in patients with burn wounds. Patients reported decreased pain during dressing changes and ease of use compared to the standard topical agent in burn care. It also prevented surgical debridement in those with indeterminate and full thickness burn injuries.


2016 ◽  
Vol 137 (1) ◽  
pp. 302-312 ◽  
Author(s):  
Alexandra Condé-Green ◽  
Andrew A. Marano ◽  
Edward S. Lee ◽  
Tom Reisler ◽  
Leigh Ann Price ◽  
...  

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