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您的检索式：作者名="Anesh Prasai"
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| 1 | Adipose-derived stem cells improve grafted burn wound healing by promoting wound bed blood flow显示文摘Background:Researchers have explored the use of adipose-derived stem cells(ASCs)as a cellbased therapy to cover wounds in burn patients;however,underlying mechanistic aspects are not completely understood.We hypothesized that ASCs would improve post-burn wound healing after eschar excision and grafting by increasing wound blood flow via induction of angiogenesis-related pathways.Methods:To test the hypothesis,we used an ovine burn model.A 5 cm^(2) full thickness burn wound was induced on each side of the dorsum.After 24 hours,the burned skin was excised and a 2 cm^(2) patch of autologous donor skin was grafted.The wound sites were randomly allocated to either topical application of 7 million allogeneic ASCs or placebo treatment(phosphate-buffered saline[PBS]).Effects of ASCs culture media was also compared to those of PBS.Wound healing was assessed at one and two weeks following the application of ASCs.Allogeneic ASCs were isolated,cultured and characterized from non-injured healthy sheep.The identity of the ASCs was confirmed by flow cytometry analysis,differentiation into multiple lineages and gene expression via real-time polymerase chain reaction.Wound blood flow,epithelialization,graft size and take and the expression of vascular endothelial growth factor(VEGF)were determined via enzyme-linked immunosorbent assay and Western blot.Results:Treatment with ASCs accelerated the patch graft growth compared to the control(p<0.05).Topical application of ASCs significantly increased wound blood flow(p<0.05).Expression of VEGF was significantly higher in the wounds treated with ASCs compared to control(p<0.05).Conclusions:ASCs accelerated grafted skin growth possibly by increasing the blood flow via angiogenesis induced by a VEGF-dependent pathway. | Osamu Fujiwara Anesh Prasai Dannelys Perez-Bello Amina El Ayadi Irene Y.Petrov Rinat O.Esenaliev Yuriy Petrov David N.Herndon Celeste C.Finnerty Donald S.Prough Perenlei Enkhbaatar | 2020 | Burns & Trauma2020，8，1： | 1 |
| 2 | Metal chelation reduces skin epithelial inflammation and rescues epithelial cells from toxicity due to thermal injury in a rat model显示文摘Background:One of the most pervasive complications of burn injury is wound progression,characterized by continuous tissue destruction in untreated wounds,which leads to wound infection,inflammation,oxidative stress and excessive scar formation.We determined whether additional tissue destruction could be attenuated with Livionex formulation(LF)lotion,which contains a metal-chelating agent and reduces inflammation in burn wounds.Methods:We subjected male Sprague Dawley rats to a 2%total body surface area(TBSA)burn using a brass comb model and topically applied LF lotion(containing ethylenediaminetetraacetic acid and methyl sulfonyl methane)to the affected area every 8 hours over 3 days.Inflammatory cytokine levels,cell apoptosis and wound healing were compared in LF lotion-treated and untreated rats.Statistical analysis was performed using a one-way analysis of variance in conjunction with Tukey’s post-hoc test.Results:Serum inflammatory cytokines were not detectable after 3 days,suggesting that small burn wounds induce only an immediate,localized inflammatory response.Microscopy revealed that LF lotion improved burn site pathology.Deoxynucleotidyl transferase biotin-d-UTP nick-end labeling staining showed reduced cell death in the LF-treated samples.LF lotion prevented the spread of tissue damage,as seen by increased amounts of Ki-67-positive nuclei in the adjacent epidermis and hair follicles.Tumor necrosis factor-alpha,interleukin-6 and inducible nitric oxide synthase levels in LF-treated skin sections from burned rats were comparable to the levels observed in unburned control sections,indicating that LF lotion reduces inflammation in and around the burn site.Conclusions:These results establish LF lotion as a therapeutic agent for reducing inflammatory stress,cell death and tissue destruction when applied immediately after a burn injury.Further studies of LF lotion on large TBSA burns will determine its efficacy as an emergency treatment for reducing long-term morbidity and scarring. | Amina El Ayadi Cheng Z.Wang Min Zhang Michael Wetzel Anesh Prasai Celeste C.Finnerty Perenlei Enkhbaatar David N.Herndon Naseem H.Ansari | 2020 | Burns & Trauma2020，8，1： | 1 |
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