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Morphometric evaluation of wound healing in burns treated with Ulmo (Eucryphia cordifolia) honey alone and supplemented with ascorbic acid in guinea pig (Cavia porcellus)

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Burns & Trauma 2016年第4期4卷 264-272页

作者： Carolina Schencke Adriana Vasconcellos cristian sandoval Paulina Torres Francisca Acevedo Mariano del Sol Doctoral Program in Morphological Sciences Universidad de La FronteraTemucoChile CONICYT-PCHA/National Doctorate Programme/2014-21141130 SantiagoChile Facultad de Medicina Universidad de La FronteraTemucoChile Doctoral Program in Morphological Sciences Universidad de La FronteraTemucoChile CIMA Research Group Facultad de OdontologíaUniversidad de La FronteraTemucoChile CONICYT-PCHA/Doctorado Nacional/2015-21150991 SantiagoChile Scientific and Technological Bioresource Nucleus Universidad de La FronteraTemucoChile Facultad de Medicina Universidad de La FronteraTemucoChile Centro de Excelencia en Estudios Morfológicos y Quirúrgicos(CEMyQ) Universidad de La FronteraTemucoChile Centro de Investigación en Ciencias Biomédicas Universidad Autónoma de ChileTemucoChile

Background:In the context of the search for cost-efficient treatments,Ulmo(Eurcyphia cordifolia)honey is an excellent alternative for treating burn wounds and could have a profound medical,social,and economic *** acid is an enzymatic co-factor necessary for the synthesis of collagen and the proliferation of fibroblasts and has been proposed as a coadjuvant to strengthen the healing effects of *** aim of this work was to evaluate by morphometric studies the healing wounds caused by burns treated with Ulmo honey alone and supplemented with ascorbic acid in guinea pig(Cavia porcellus).Methods:Fifteen guinea pigs were used and divided randomly into three groups:positive control(C+),experimental with unsupplemented honey(H),and experimental with supplemented honey(SH).A uniform deep burn covering 1 cm2of the back skin was *** following indices were calculated for the morphometric study:superficial contraction index of the wound,deep contraction index of the wound,wound severity index,global healing index,global contraction index,and dermal proliferation ***:The superficial contraction index of the wound,global healing index,global contraction,and dermal proliferation area values of the experimental with supplemented honey group were higher than the other groups(P<0.05).Conclusions:According to these results,the combination of honey with an antioxidant(ascorbic acid)promotes an appropriate action to support the healing *** study showed that by supplementing the Ulmo honey with ascorbic acid,the healing and contraction effects can be strengthened in burn wounds compared to unsupplemented *** results were proof of the synergy between honey and ascorbic acid in healing burn wounds.

关键词： Honey Ascorbic acid Burn Morphometry Wound healing

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Role of copper nanoparticles in wound healing for chronic wounds:literature review

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Burns & Trauma 2022年第1期10卷 805-813页

作者： Jessica Salvo cristian sandoval Escuela de Enfermería Facultad de CienciasUniversidad MayorChile Programa de Doctorado en Ciencias Morfológicas Facultad de MedicinaUniversidad de la FronteraAv.Francisco Salazar 011454811230TemucoChile Escuela de Tecnología Médica Facultad de SaludUniversidad Santo TomásLos Carreras 7535310431OsornoChile Departamento de Ciencias Preclínicas Facultad de MedicinaUniversidad de la FronteraAv.Francisco Salazar 011454811230TemucoChile

Chronic wounds are defined as wounds that fail to proceed through the normal phases of wound healing in an orderly and timely *** most common and inevitable impairment to wound healing is the installation of an infection,usually in the case of chronic ***,the objective of the present review was to identify the importance of copper nanoparticles in dressings for wound *** such as silver,gold and copper combat infectious processes through the inhibition of protein synthesis,peroxidation of the cell membrane and destroying the nucleic acids of bacteria and *** bioactive nanoparticles,copper plays a complex role in various cells,it modulates several cytokines and growth factor mechanisms of action and is essentially involved in all stages of the wound healing *** importantly,copper plays a key role in skin regeneration and angiogenesis and accelerates the healing process through induction of vascular endothelial growth factor(VEGF)and angiogenesis by hypoxia-induced factor-1-alpha(HIF-1α)action where copper enhances HIF-1αexpression and HIF-1αbinding to the critical motifs in the promoter and putative enhancer regions of HIF-1-regulated genes.

关键词： Angiogenesis Antimicrobial Nanoparticles Regeneration Wound healing Chronic wound VEGF HIF-1α

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Peroxisome proliferator-activated receptors as targets to treat metabolic diseases:Focus on the adipose tissue,liver,and pancreas

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World Journal of Gastroenterology 2023年第26期29卷 4136-4155页

作者： Henrique Souza-Tavares Carolline Santos Miranda Isabela Macedo Lopes Vasques-Monteiro cristian sandoval Daiana Araujo Santana-Oliveira Flavia Maria Silva-Veiga Aline Fernandes-da-Silva Vanessa Souza-Mello Department of Anatomy Rio de Janeiro State UniversityRio de Janeiro 20551030Brazil Escuela de Tecnología Médica Facultad de SaludUniversidad Santo TomásOsorno 5310431Chile Departamento de Ciencias Preclínicas Universidad de la FronteraTemuco 4780000Chile

The world is experiencing reflections of the intersection of two pandemics:Obesity and coronavirus disease *** prevalence of obesity has tripled since 1975 worldwide,representing substantial public health costs due to its *** adipose tissue is the initial site of obesity *** excessive energy intake,it undergoes hyperplasia and hypertrophy until overt inflammation and insulin resistance turn adipocytes into dysfunctional cells that send lipotoxic signals to other *** pancreas is one of the organs most affected by *** lipotoxicity becomes chronic,there is an increase in insulin secretion by pancreatic beta cells,a surrogate for type 2 diabetes mellitus(T2DM).These alterations threaten the survival of the pancreatic islets,which tend to become dysfunctional,reaching exhaustion in the long *** for the liver,lipotoxicity favors lipogenesis and impairs beta-oxidation,resulting in hepatic *** silent disease affects around 30%of the worldwide population and can evolve into end-stage liver *** therapy for hepatic steatosis remains to be defined,peroxisome proliferator-activated receptors(PPARs)activation copes with T2DM *** PPARs are transcription factors found at the intersection of several metabolic pathways,leading to insulin resistance relief,improved thermogenesis,and expressive hepatic steatosis mitigation by increasing mitochondrial *** review aimed to update the potential of PPAR agonists as targets to treat metabolic diseases,focusing on adipose tissue plasticity and hepatic and pancreatic remodeling.

关键词： Obesity Insulin resistance Peroxisome proliferator-activated receptors Pancreas Hepatic steatosis Adipose tissue

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