Preclinical study of experimental burns treated with photobiomodulation and Human Amniotic Membrane, both isolated and associated / Estudo pré-clínico de queimaduras experimentais tratadas com fotobiomodulação e membrana amniótica humana, isoladas e associadas / Estudio preclínico de quemaduras experimentales tratadas con fotobiomodulación y membrana amniótica humana, solas y combinadas

Abstract Objective: to evaluate the effect of photobiomodulation with low-level 660 nm laser alone or associated with Human Amniotic Membrane in the repair of partial-thickness burns in rats. Method: an experimental study conducted with 48 male Wistar rats, randomized into four groups: Control, Human Amniotic Membrane, Low-Level Laser Therapy, and Low-Level Laser Therapy associated with Human Amniotic Membrane. The histopathological characteristics of the skin samples were analyzed 7 and 14 days after the burn. The data obtained were submitted to the Kolmogorov-Smirnov and Mann-Whitney tests. Results: the histological analysis of the burn injuries showed a decrease in inflammation (p<0.0001) and an increase in proliferation of fibroblasts (p<0.0001) mainly at 7 days in all treatments related to the control group. At 14 days, the greater effectiveness in accelerating the healing process was significant (p<0.0001) in the Low-Level Laser Therapy group associated with the Human Amniotic Membrane. Conclusion: the association of photobiomodulation therapies with the Human Amniotic Membrane allowed verifying a reduction in the healing process time of the experimental lesions, stimulating its proposal as a treatment protocol in partial-thickness burns.

Resumo Objetivo: avaliar o efeito da fotobiomodulação com laser de baixa intensidade 660 nm isoladamente ou associada à membrana amniótica humana no reparo de queimaduras de espessura parcial em ratos. Método: estudo experimental com 48 ratos Wistar machos, randomizados em quatro grupos: Controle, Membrana Amniótica Humana, Terapia a Laser de Baixa Intensidade e Terapia a Laser de Baixa Intensidade associado à Membrana Amniótica Humana. As características histopatológicas das amostras de pele foram analisadas aos 7 e 14 dias após a queimadura. Os dados obtidos foram submetidos aos testes de Kolmogorov-Smirnov e Mann Whitney. Resultados: a análise histológica das lesões por queimadura mostrou a diminuição da inflamação (p <0,0001) e aumento da proliferação de fibroblastos (p <0,0001), principalmente nos 7 dias em todos os tratamentos relacionados ao grupo controle. Aos 14 dias, a maior efetividade na aceleração do processo cicatricial foi significativa (p<0,0001) no grupo Terapia a Laser de Baixa Intensidade associado à Membrana Amniótica Humana. Conclusão: a associação das terapias de fotobiomodulação à membrana amniótica humana permitiu comprovar redução no tempo do processo cicatricial das lesões experimentais, estimulando sua proposição como protocolo de tratamento em queimaduras de espessura parcial.

Resumen Objetivo: evaluar el efecto de la fotobiomodulación con láser de baja intensidad 660 nm de sola o combinada con la membrana amniótica humana en la reparación de quemaduras de espesor parcial en ratas. Método: estudio experimental con 48 ratas Wistar macho, aleatorizadas en cuatro grupos: Control, Membrana Amniótica Humana, Terapia con Láser de Baja Intensidad y Terapia con Láser de Baja Intensidad combinada con la Membrana Amniótica Humana. Las características histopatológicas de las muestras de piel fueron analizadas a los 7 y 14 días después de la quemadura. Los datos obtenidos fueron sometidos a las pruebas de Kolmogorov-Smirnov y Mann-Whitney. Resultados: el análisis histológico de las lesiones por quemadura mostró una disminución de la inflamación (p <0,0001) y un aumento de la proliferación de fibroblastos (p <0,0001) principalmente a los 7 días en todos los tratamientos en comparación con el grupo control; a los 14 días, en el grupo de Terapia con Láser de Baja Intensidad combinada con la Membrana Amniótica Humana la mayor efectividad en la aceleración del proceso de cicatrización fue significativa (p<0,0001). Conclusión: la asociación de terapias de fotobiomodulación con la membrana amniótica humana permitió comprobar que hubo una reducción en el tiempo del proceso de cicatrización de lesiones experimentales, lo cual favorece que se proponga como protocolo de tratamiento en quemaduras de espesor parcial.

Cuide, movimente, evite lesão por pressão no seu paciente: um relato de experiência / Care, move, avoid pressure injury in your patient: an experience report / Cuidar, mover, evitar lesiones por presión en su paciente: informe de una experiencia

Introdução: As lesões por pressão (LPP) correspondem a danos na pele ou em tecidos moles encobertos, geralmente em áreas de proeminências ósseas, ou associado ao uso de dispositivo médico ou outro tipo de artefato. Diante disso, a enfermeira deve desenvolver sua prática, baseada em evidências científicas e priorizar a prevenção da formação das lesões na pele. Objetivo: Relatar a experiência de estudantes de Enfermagem sobre o desenvolvimento de ações de promoção do cuidado seguro relacionado à prevenção de LPP em pacientes internados em um hospital público pediátrico na Bahia. Metodologia: Trata-se de um estudo de caráter descritivo, do tipo relato de experiência, realizado por seis estudantes de Enfermagem em um hospital estadual pediátrico localizado no estado da Bahia, no período de novembro 2022. Principais resultados: Percebeu-se que existem profissionais de enfermagem que possuem interesse em obter mais conhecimento sobre o assunto, porém ainda há lacunas de conhecimento por parte da equipe sobre alguns assuntos abordados, tais como a escala de Braden e a utilização do colchão caixa de ovo para todas as faixas etárias. Foi possível perceber que os passos para prevenir a lesão por pressão não são cumpridos por parte da equipe e isso pode dificultar a prevenção das lesões de forma efetiva. Conclusão: Recomenda-se, portanto, que as unidades assistenciais, juntamente com suas respectivas coordenadoras, realizem ações contínuas de educação permanente, a fim de contribuir para uma melhor qualificação profissional, promovendo, acima de tudo, a segurança do paciente.

Introduction: Pressure lesions (PPL) correspond to damage to the skin or covert soft tissue, usually in areas of bony prominence, or associated with the use of a medical device or other type of artifact. Therefore, nurses should develop their practice, based on scientific evidence and prioritize the prevention of skin lesion formation. Objective: To report the experience of nursing students on the development of actions to promote safe care related to the prevention of PPL in patients admitted to a pediatric public hospital in Bahia. Methodology: This is a descriptive study, of the type of experience report, conducted by six nursing students in a pediatric state hospital located in the state of Bahia, in the period of November 2022. Main results: It was noticed that there are nursing professionals who have an interest in obtaining more knowledge about the subject, but there are still gaps in knowledge on the part of the team on some subjects addressed, such as the Braden scale and the use of the egg box mattress for all age groups. It was possible to notice that the steps to prevent pressure injury are not met by the team and this can hinder the prevention of injuries effectively. Conclusion: It is recommended, therefore, that the care units, together with their respective coordinators, carry out continuous actions of continuing education, in order to contribute to a better professional qualification, promoting, above all, patient safety.

Introducción: Las lesiones por presión (LPP) corresponden a lesiones en la piel o tejidos blandos encubiertos, generalmente en zonas de prominencia ósea, o asociadas al uso de un dispositivo médico u otro tipo de artefacto. Por ello, el personal de enfermería debe desarrollar su práctica, basándose en la evidencia científica y priorizando la prevención de la formación de lesiones cutáneas. Objetivo: Relatar la experiencia de estudiantes de enfermería sobre el desarrollo de acciones para promover cuidados seguros relacionados a la prevención de PPL en pacientes internados en un hospital público pediátrico de Bahía. Metodología: Se trata de un estudio descriptivo, del tipo relato de experiencia, realizado por seis estudiantes de enfermería en un hospital público pediátrico localizado en el estado de Bahía, en el período de noviembre de 2022. Principales resultados: Se observó que hay profesionales de enfermería que tienen interés en obtener más conocimientos sobre el tema, pero todavía hay lagunas de conocimiento por parte del equipo en algunos temas abordados, como la escala de Braden y el uso del colchón caja de huevos para todos los grupos de edad. Se pudo notar que los pasos para prevenir lesiones por presión no son cumplidos por el equipo y esto puede dificultar la prevención de lesiones de forma efectiva. Conclusiones: Se recomienda, por lo tanto, que las unidades asistenciales, junto con sus respectivos coordinadores, realicen acciones continuas de formación continuada, con el fin de contribuir a una mejor cualificación profesional, promoviendo, sobre todo, la seguridad del paciente.

Microemulsions Improve Topical Protoporphyrin IX (PpIX) Delivery for Photodynamic Therapy of Skin Cancer

Abstract We report here microemulsions (MEs) for topical delivery of protoporphyrin IX (PpIX) for Photodynamic Therapy (PDT) of skin cancers. Selected MEs consisting of Oil/Water (O/W) bicontinuous (BC) and Water/Oil (W/O) preparations were characterized as to pH, nanometric size, zeta potential, drug content, and viscosity. Sustained in vitro PpIX release was achieved from MEs 2A (O/W), 10B (BC) and 16B (W/O) through an artificial membrane for up to 24 h, characterizing MEs as drug delivery systems. None of these MEs showed permeation through the skin, demonstrating the required topical effect. After 4 h, in vitro retention of PpIX in the stratum corneum (SC) was higher from both ME 10B and control (PpIX at 60 µg/mL in PEG 300). However, in the Epidermis + Dermis ([Ep + D]), retention from ME 10B and ME 16B was ~40 times higher compared to control. Confocal Laser Scanning Microscopy (CLSM) showed higher fluorescence intensity in the SC for both control and ME 10B, whereas ME 10B fluorescence was higher in [Ep+D]. The results indicate that ME 10B is suitable for PpIX encapsulation, showing good characteristics and a localized effect for a potential delivery system for PDT-associated treatments of skin cancers.

In vitro evaluation of the cytotoxicity and eye irritation potential of preservatives widely used in cosmetics

Abstract The consumption of cosmetics has been increasing every year and is expected to reach $675 billion by 2020 at an estimated growth rate of 6.4% per year. Exposure to skin irritants is the major cause of non-immunological inflammation of the skin. Therefore, the safety evaluation of cosmetic preservatives should be increased. Thus, the present work aimed to evaluate the cytotoxicity as the viability endpoint and the eye irritation potential of preservatives used in cosmetics. Cytotoxicity assays were performed using MTT and NRU in human keratinocytes (HaCaT), human dermal fibroblasts, adult (HDFa), and human hepatoma cells (HepG2). The eye irritation potential was evaluated using the Hen's Egg Test-chorioallantoic membrane (HET-CAM). The evaluated preservatives were methylparaben (MP), propylparaben (PP), phenoxyethanol (PE), and a mixture of methylchloroisothiazolinone and methylisothiazolinone (CMI/MI). All preservatives showed cytotoxic potential within the permitted concentrations for use in cosmetic products. In the HET-CAM test, PE and CMI/MI, MP, and PP were classified as severe, moderate, and poor irritants, respectively. Our results indicate that proper safety evaluations are required to ensure the beneficial properties of preservatives on cosmetic products without exceeding exposure levels that would result in adverse health effects for consumers.

Educação permanente em lesões crônicas de pele: relato de experiência / Educación permanente en lesiones crónicas de la piel: relato de experiencia / Permanent education in chronic skin injuries: experience report

RESUMO Objetivo: relatar a experiência de Educação Permanente em Saúde, realizada por meio de ações de extensão por profissionais, docentes e estudantes de Enfermagem, sobre lesões crônicas de pele, de 2017 a 2020, com profissionais de Enfermagem em uma parceria entre a Escola de Enfermagem da Universidade Federal do Rio Grande do Sul e a Secretaria Municipal de Saúde de Porto Alegre, Rio Grande do Sul, Brasil. Método: relato de experiência que descreve quatro ações extensionistas. Os resultados foram correlacionados à política pública de Educação Permanente em Saúde. Resultados: ações desenvolvidas por meio de extensão universitária proveram a elaboração e a edição de cartilha de autocuidado das pessoas com úlceras de perna e de orientações sobre lesões de pele aos profissionais de Enfermagem. As cartilhas foram impressas e divulgadas em oficinas educativas, constituindo-se em forma de Educação Permanente em Saúde na Atenção Primária à Saúde, contemplando 64 trabalhadores, em 2018, e 171, em 2019. Em 2020, em função da pandemia, o curso foi ofertado de forma virtual, na plataforma Moodle, por meio de webconferências e postagem de trabalhos, abrangendo 135 profissionais de Enfermagem. Considerações Finais: as experiências relatadas e a lacuna de desenvolvimento informada como necessária à qualificação dos profissionais de Enfermagem destacaram a necessidade de Educação Permanente em Saúde para potencializar a autonomia dos profissionais de Enfermagem no cuidado de pessoas com lesões crônicas de pele na medida em que eles se constituem protagonistas do cuidado.

RESUMEN Objetivo: relatar la experiencia de Educación Permanente en Salud, realizada por medio de acciones de extensión por profesionales, docentes y estudiantes de Enfermería, sobre lesiones crónicas de la piel, de 2017 a 2020, con profesionales de Enfermería en una asociación entre la Escuela de Enfermería de la Universidad Federal de Rio Grande do Sul y la Secretaría Municipal de Salud de Porto Alegre, Rio Grande do Sul, Brasil. Método: relato de experiencia que describe cuatro acciones extensionistas. Los resultados fueron correlacionados a la política pública de Educación Permanente en Salud. Resultados: acciones desarrolladas por medio de extensión universitaria proporcionaron la elaboración y la edición de cartilla de autocuidado de las personas con úlceras de pierna y de orientaciones sobre lesiones de piel a los profesionales de Enfermería. Las cartillas fueron impresas y divulgadas en talleres educativos, constituyéndose en forma de Educación Permanente en Salud en la Atención Primaria a la Salud, contemplando 64 trabajadores, en 2018, y 171, en 2019. En 2020, por cuenta de la pandemia, el curso fue ofrecido de forma virtual, en la plataforma Moodle, por medio de webconferencias y publicación de trabajos, abarcando 135 profesionales de Enfermería. Consideraciones Finales: las experiencias relatadas y la laguna de desarrollo informada como necesaria para la cualificación de los profesionales de Enfermería destacaron la necesidad de Educación Permanente en Salud para potenciar la autonomía de los profesionales de Enfermería en el cuidado de personas con lesiones crónicas de la piel en la medida en que se constituyen protagonistas del cuidado.

ABSTRACT Objective: to report the experience of Continuing Education in Health carried out through extension actions by nursing professionals, professors, and students, on chronic skin lesions, from 2017 to 2020, with nursing professionals in a partnership between the School of Nursing of the Federal University of Rio Grande do Sul and Porto Alegre Municipal Health Department, Rio Grande do Sul, Brazil. Method: experience report that describes four extension actions. The results were correlated to the public policy of Permanent Education in Health Results: actions developed through university extension provided the elaboration and edition of a self-care booklet for people with leg ulcers and guidance on skin lesions for nursing professionals. The booklets were printed and disseminated in educational workshops, constituting the form of Permanent Health Education in Primary Health Care, covering 64 workers in 2018 and 171 in 2019. In 2020, due to the pandemic, the course was offered from virtual form, on the Moodle platform, through web conferences and posting of works, covering 135 nursing professionals. Final Considerations: the experiences reported, and the development gap reported as necessary for the qualification of nursing professionals highlighted the need for Permanent Education in Health to enhance the autonomy of nursing professionals in the care of people with chronic skin lesions, as they become protagonists of care.

Lesiones cutáneas asociadas al uso de bombas de insulina y sistemas de monitoreo: un problema desafiante / Insulin pumps and glucose monitors related cutaneous lesions: a challenging problem

Los cuidados actuales de la diabetes incluyen altos niveles de tecnología y los pacientes utilizan diferentes dispositivos que pueden ayudar en su control metabólico, pero pueden impactar negativamente en su piel. Sensores de glucosa como el Freestyle, Dexcom, el Enlite de Medtronic y los sistemas de infusión continua de insulina contienen diferentes productos químicos que están en contacto directo con la piel del paciente y pueden causar una dermatitis irritativa o de contacto alérgica. Las lesiones incluyen eczema, prurito, heridas, cicatrices y cambios en la pigmentación de la piel. Los productos químicos involucrados que pueden ocasionarlas son el isobornil acrilato, N, N- dimetilacrilamida, etil cianoacrilato y colophonium, forzando a los pacientes a cambiar los sitios de infusión, el set de infusión o el sensor mismo más pronto de lo esperado, para reducir el nivel de daño en la piel. Existe gran número de productos que permiten proteger la piel y reducir el contacto de la piel con la cánula de la bomba o el sensor. Para reducir o prevenir el daño existen productos como cremas o spray y parches de hidrocoloide que actúan como barrera y existen técnicas para aplicar y retirar cuidadosamente los parches y adhesivos de los dispositivos. Una vez que las lesiones se han producido, el tratamiento incluye pomadas y a veces corticoides tópicos y/o antibióticos. Para prevenir o reducir el daño de la piel asociado al sensor y uso de la bomba de insulina, la industria que los produce debería incluir la información en relación a los productos químicos incluidos en cada dispositivo.

Diabetes care nowadays includes a high level of technology and patients use different devices which can help them in their glycemic control, but can have a negative impact on their skin. Glucose sensors such as Freestyle, Dexcom, Medtronic Enlite and also continuous subcutaneous insulin infusion systems contain different chemical products which are in direct contact with the patient's skin and can cause irritative or allergic contact dermatitis. Lesions include eczema, pruritus, wounds, scars and changes in skin pigmentation. The chemical products which can induce them are isobornyl acrylate, N, N- dimethylacrylamide, ethyl cyanoacrylate and colophonium, forcing patients to change the infusion site, set or the sensor itself, earlier than expected, in order to reduce the level of skin damage. There are a number of products which can protect the skin and reduce it's contact with the pump cannula or the sensor. To reduce or prevent damage, we have products such as barrier cream or spray films and hydrocolloid blister plasters and actions such as careful application and removal of device's patches and adhesives. Once lesions are established, treatment includes ointments and sometimes topical steroids and/ or antibiotics. In order to prevent or reduce skin damage related to sensor and insulin pump use, the manufacturers should include the information related to the chemicals included in each device.

Nanoformulations of quercetin: a potential phytochemical for the treatment of uv radiation induced skin damages

Abstract The continuous prolonged exposures of sun light especially the ultra violet (UV) radiation present in it, cause not only the risk of skin cancer but also it may cause premature skin aging, photodermatoses and actinic keratoses. Flavonoids (including Flavane, Flavanone, Flavone, Flavonol, Isoflavone, Neoflavone etc.) having potent antioxidant activity, used as topical applications for protection against UV induced skin damages as well as for skin care. Most commonly used flavonoid is quercetin (Flavonol), which is present in fruits, vegetables, and herbs. We aim to review the research focused on development of different novel formulations to treat UV radiations induced skin diseases. In this review, several formulations of flavonoid quercetin were discussed and their outcomes were compiled and compared in context to solubility, stability and efficiency of application. On the basis this comparative analysis we have concluded that three formulations, namely glycerosomes, nanostructured lipid carriers and deformable liposomes hold good applications for future aspects for topical delivery of quercetin. These formulations showed enhanced stability, increased quercetin accumulation in different skin layers, facilitated drug permeation in skin and long-lasting drug release.

Development and Characterization of a Hydrogel Containing Silver Sulfadiazine for Antimicrobial Topical Applications. Part II: Stability, Cytotoxicity and Silver Release Patterns

Abstract Hydrogels are interesting for use in the treatment of topical wounds due to their virtually zero toxicity, and capacity for extended release of pharmaceuticals. Silver sulfadiazine (SSDZ) is the drug of choice in the treatment of skin burns. The aim of the study was to determine cytotoxicity, antimicrobial activity and stability of a PVA hydrogel with integrated silver sulfadiazine. SSDZ-hydrogels were prepared using 10% (w/w) PVA (either 89% or 99% hydrolyzed) and 1% (w/w) silver sulfadiazine. Cellular viability was assessed via MTS assays, antimicrobial activity via disk-diffusion and accelerated stability tests were carried out with analysis at 0, 30, 60, 90 and 180 days of storage at 40 ± 2 °C and a relative humidity of 75 ± 5%. The parameters evaluated included organoleptic characteristics, moisture, swelling ability, mechanical strength, FTIR, XRD, TGA and DSC, and silver release patterns via XRD and potentiometry. Cell viability tests indicated some cytotoxicity, although within acceptable levels. After 90 days of storage, SSDZ hydrogel samples exhibited a brown coloration, probably due to the formation of Ag or Ag2O nanoparticles. The SSDZ-loaded hydrogels suffered visual and physical changes; however, these changes did not compromise its use as occlusive wound dressings or its antimicrobial properties.

Evaluation of the antibacterial synergism of two plant extracts belonging to Bignoniaceae family and development of a topical formulation

Abstract Fridericia caudigera and Cuspidaria convoluta (Bignoniaceae) species, which grow in the northwest of Argentina, have shown antibacterial effect against strains isolated from skin infections, and each one displayed synergism with commercial antibiotics. The aims of this work were to evaluate the antibacterial activity and toxicity of the combination of these two plant species, and to design a stable gel for topical use including the blend of extracts. The combination of extracts was evaluated for synergistic effects (chequerboard assay), genotoxicity (Ames test) and cytotoxicity (Artemia salina test). A gel was subsequently formulated with the combination of extracts using carboxymethylcellulose as a polymer. The following physico- chemical characteristics of the gel formulation: pH, viscosity, spreadability and total phenol content, as well as resistance to severe temperature changes, biological activity (diffusion in agar), in vitro permeation (Franz cells) and primary dermal irritation (Draize test) were analyzed. The combination of extracts showed a synergistic effect on pathogenic bacteria and was not toxic in the in vitro tests. The gel was stable and retained the antimicrobial activity of the original extracts. The formulation proposed in this work could constitute an alternative for primary skin infections since it proved to be safe for topical administration.

A mobile application to guide healthcare professionals in the correct technique for personal protective equipment use during the COVID-19 pandemic

Objectives: The present study aimed to develop an application to guide healthcare professionals on using personal protective equipment (PPE) during the COVID-19 pandemic and prevent and treat skin lesions caused by these devices. Methods: This is a study on technological production. The framework for application development consisted in the following phases: Phase 1-"Design: identification of application development requirements;" Phase 2-"Application prototype development": including an integrative literature review in major databases; Phase 3-"Application construction": elaboration of the decision tree, algorithm, database structuring, and software development; Phase 4-"Transition": application functionality test. Result: Our application Simplifica EPI is an innovative technology; this software is a tool to assist healthcare professionals in using PPE. In addition, it describes how to prevent and care for skin lesions caused by PPE. Simplifica EPI has 25 screens and 32 images. It will be available on the Google Play Store after its registration with the Brazilian National Institute of Industrial Property. Conclusions: After an integrative literature review, the application Simplifica EPI was developed as an innovative technology with great potential for use by healthcare professionals. (AU)

Validation of algorithms for donning and doffing personal protective equipment during the COVID-19 pandemic

Introduction: The prolonged or incorrect use of facial masks, respirators and glasses or visors results in friction, pressure and shear forces that constantly act on the facial skin, leading to lesions and dermatitis. Objective: To develop and validate algorithms to guide health professionals in the correct use of personal protective equipment (PPE) and indicate preventive measures against skin injuries caused by inappropriate use during the COVID-19 pandemic. Methods: For the develoment of the algorithms, an integrative literature review was performed using the following databases: PubMed, SciELO, and LILACS. The algorithms were evaluated by 59 health professionals (nurses, doctors, and physiotherapists), using the Delphi technique. A content validity index (CVI) was used for the statistical analysis. Results: The experts classified the items of the algorithms from fully inadequate to fully adequate in the first round of consultations, and from partially adequate to fully adequate in the second round. The overall CVI values were of 0.83 and 1.0 in the first and second rounds respectively. Conclusion: The algorithms validated by the expert panel can be used by health professionals when donning and doffing PPE, and to prevent the facial-skin lesions caused by their use. (AU)

Elaboration and validation of flowchart for the prevention and treatment of intestinal peristomal skin complications

Objective: To build and validate a flowchart for the prevention and treatment of intestinal peristomal skin complications. Method: For the construction of the algorithms, a systematic reviewwas carried out in health sciences databases comprising the last 10 years. The evaluation of the algorithms was carried out by 38 nurses. For the validation of the algorithms, theDelphi technique was used. The statistical analysis used was the content validity index and the Cronbach alpha coefficient. The questionnaire was sent by e-mail and in person after approval by the Ethics and Research Committee. Results: In the first evaluation of the algorithms, there was no agreement among the experts. However, after making the corrections suggested by the evaluators, the algorithms were resent, with a 100% consensus among the evaluators. The questions used to validate the algorithms contributed favourably to the internal consistency and content validation of the instrument, since the respective Cronbach alpha was 0.9062 and the global content validity index (g-CVI) was 0.91 in the first validation and 1.0 in the second validation. Conclusion: After an integrative literature review, the flowcharts were built and validated by a professional with experience in the area, showing 100% agreement among the experts in the second evaluation. (AU)

Lesões de pele ocasionadas por procedimento robótico versus aberto / Skin injuries occasioned by robotic procedure versus open

Objetivo: identificar fatores associados a lesões de pele decorrentes de cirurgias urológicas robóticas versus convencionais em adultos/idosos. Método: revisão integrativa, etapas: Construção do protocolo de pesquisa; Formulação da pergunta - prática baseada em evidência, utilizando o acrônimo PICO; Definição dos descritores das estratégias de busca em cada uma das bases de dados selecionadas, que deviam ser variadas; Determinação, seleção e revisão dos critérios de inclusão e exclusão; Avaliação crítica dos estudos; Coleta de dados utilizando instrumentos que analisassem em pares; e Síntese dos resultados/dados agrupados por semelhança. Resultados: a estratégia de busca gerou 207 artigos. Resultando para análise final 7 artigos. Conclusão: são necessários novos estudos clínicos, que abordem os prejuízos e benefícios relacionados ao posicionamento cirúrgico robótico e abertos, direcionando assim, intervenções de enfermagem acuradas aos pacientes sob maior risco.(AU)

Objective: to identify factors associated with skin lesions resulting from robotic versus conventional urological surgery in adults / elderly. Method: integrative review, stages: Construction of the research protocol; Formulation of the question - evidence-based practice, using the acronym PICO; Definition of search strategy descriptors in each of the selected databases, which should be varied; Determination, selection and review of inclusion and exclusion criteria; Critical evaluation of studies; Data collection using instruments that analyzed in pairs; and Summary of results / data grouped by similarity. Results: the search strategy generated 207 articles. Resulting in 7 articles for final analysis. Conclusion: further clinical studies are needed, addressing the losses and benefits related to robotic and open surgical positioning, thus directing accurate nursing interventions to patients at higher risk.(AU)

Objetivo: identificar los factores asociados a las lesiones cutáneas resultantes de la cirugía urológica robótica versus convencional en adultos / ancianos. Método: revisión integradora, etapas: construcción del protocolo de investigación; Formulación de la pregunta - práctica basada en evidencia, utilizando el acrónimo PICO; Definición de descriptores de estrategias de búsqueda en cada una de las bases de datos seleccionadas, que deben ser variadas; Determinación, selección y revisión de criterios de inclusión y exclusión; Evaluación crítica de estudios; Recolección de datos utilizando instrumentos que se analizaron por parejas; y Resumen de resultados / datos agrupados por similitud. Resultados: la estrategia de búsqueda generó 207 artículos. Resultando en 7 artículos para el análisis final. Conclusión: se necesitan más estudios clínicos que aborden las pérdidas y beneficios relacionados con el posicionamiento quirúrgico robótico y abierto, dirigiendo así intervenciones de enfermería precisas a los pacientes de mayor riesgo.(AU)

Application of CD83 and HSF5 to Identify Antemortem and Postmortem Skin Burns / 法医学杂志

OBJECTIVES@#To explore the forensic application value of cluster of differentiation 83 (CD83) and heat shock transcription factor 5(HSF5) in identifying antemortem and postmortem skin burns.@*METHODS@#Through reverse transcription real-time quantitative polymerase chain reaction (RT-qPCR), CD83 and HSF5 mRNA levels in the skin tissues of antemortem and postmortem burned mice and human samples were detected quantitatively.@*RESULTS@#Compared with the control group and the postmortem burned group, the mRNA levels of CD83 and HSF5 in antemortem burned mice were higher. The high mRNA expressions of CD83 could be detected 96 h after death, and the mRNA expressions of HSF5 could be observed 72 h after death. Compared with undamaged skin, increased CD83 and HSF5 mRNA levels were detected in 11 out of 15 cases(P<0.05).@*CONCLUSIONS@#CD83 and HSF5 can be used in forensic practice as indicators for vital reaction in antemortem burn identification.

Application Prospect of MicroRNA in Skin Wound Age Estimation / 法医学杂志

Wound age estimation is one of the major tasks in forensic practice. However, relatively accurate estimation of the wound age is still a conundrum and research spotlight world-widely. Studies show that microRNAs (miRNAs) are involved in the whole process of the skin wound repair, and miRNAs, as biomarkers, might be used to estimate the time of skin injury owing to their characteristic advantage. This paper summarizes the miRNA fundamental function, properties, current research progress in the estimation of wound age, and its limitations, and put forward prospect of potential application and research based on miRNAs in estimation of wound age.

O receptor aril de hidrocarbonetos (AhR) em melanomas: associação com mutações BRAF, com a progressão da doença e identificação de ligantes / The aryl hydrocarbon receptor (AhR) in melanomas: association with BRAF mutations, with disease progression and ligand identification

O melanoma é um tipo de câncer de pele geneticamente diverso, que surge diante das transformações em melanócitos. A mutação BRAFV600E está presente em mais de 90% de todas as mutações em BRAF, sendo assim ocorre em cerca de 50% dos casos registrados. As mutações em NRAS, ocupam o segundo lugar entre as mutações mais prevalentes, cerca de 20% dos casos. Informações sobre as assinaturas genéticas, permitiram o desenvolvimento de terapia alvo dirigida. O Vemurafenib, inibidor da quinase BRAFV600E, apresentou inicialmente resultados bastante satisfatórios, contudo existe registro de casos de recidiva e resistência. O receptor aril de hidrocarbonetos é expresso em vários componentes da pele, e assim está relacionado a homeostase e fisiopatologia da pele. Diante disso, a avaliação da expressão do receptor em um painel de linhagens mutadas para NRAS e BRAF, e BRAF resistentes, mostrou-se maior do que a encontrada em melanócitos. Também encontramos maior expressão de mRNA de AhR em linhagens de melanoma derivadas de sítio primário e metastático, mutadas para BRAFV600E, quando comparadas ao melanócito. Agregado a isto, a análise in silico no TCGA (The Cancer Genome Atlas) mostrou que há 18% de alteração genética em AhR, sendo em maior parte a alta regulação de mRNA. Também, a análise do banco público GSE12391, mostrou aumento de mRNA de AhR na fase de crescimento vertical do melanoma. Assim, concluímos que há maior expressão de mRNA e sua importância nas fases de desenvolvimento do melanoma, tanto nos processos iniciais quanto em processos de migração, invasão e metástase. Ainda, encontramos maior mRNA do receptor em linhagens resistentes ao Vemurafenib. Este resultado sustenta a hipótese de que AhR pode ser considerado um marcador de resistência em melanomas. O AhR, inicialmente no citoplasma, quando ativado pode atuar como fator de transcrição regulando vários genes que apresentam sequências definidas, participando de respostas carcinogênicas. Compostos halogenados e moléculas endógenas derivadas das vias de metabolização do triptofano são agonistas do receptor. Anteriormente, nosso grupo mostrou que linhagens de melanoma incubadas com triptamina e DMT exibiram menor clonogenicidade. Diante de uma literatura escassa sobre o papel do DMT no melanoma e com base nestes resultados, nosso objetivo foi avaliar o papel de AhR nesta interface DMT-melanoma. Para isto, nosso objetivo foi construir linhagem editada geneticamente para AhR através da ferramenta CRISPR-Cas9. Vários foram os esforços, sem sucesso, utilizados nas tentativas de comprovar a manutenção de células editadas na cultura. Atrelamos a este resultado a possibilidade de haver duas subpopulações editadas geneticamente pós CRISPR-Cas9, onde uma destas manteve o padrão de crescimento semelhante às células wild type. Devido a este crescimento diferencial, não obtivemos congruências nos ensaios e postulamos a perda do possível nocaute. A partir disso, realizamos ensaios de interactoma para avaliar a interação de DMT-AhR. Nosso resultado sugere a interação de DMT ao receptor sigma 1, e não ao receptor aril de hidrocarbonetos. Desta forma, o interactoma sustenta a hipótese de que DMT não é um ligante de AhR. Para certificar este resultado análises de docking associados a ensaios biológicos, avaliando o papel do receptor, devem ser realizados para averiguar a afinidade e seletividade de DMT como ligante do receptor na linhagem de melanoma

Melanoma is a genetically diverse type of skin cancer, which arises from changes in melanocytes. The BRAFV600E mutation is present in more than 90% of all BRAF mutations, so it occurs in about 50% of registered cases. Mutations in NRAS occupy the second place among the most prevalent mutations, about 20% of cases. Information on genetic signatures allowed the development of targeted therapy. vemurafenib, kinase inhibitor BRAFV600E, initially presented very satisfactory results, however there is a record of cases of relapse and resistance. The aryl hydrocarbon receptor is expressed in several components of the skin and is thus related to homeostasis and skin pathophysiology. Therefore, the evaluation of receptor expression in a panel of strains mutated to NRAS and BRAF, and resistant BRAF, proved to be greater than that found in melanocytes. We also found main expression of AhR mRNA in melanoma strains derived from primary and metastatic site, mutated to BRAFV600E, when compared to melanocyte. Added to this, the in silico analysis in TCGA (The Cancer Genome Atlas) showed that there is 18% of genetic alteration in AhR, being mostly the high regulation of mRNA. Also, an analysis by the public bank GSE12391, showed an increase in AhR mRNA in the vertical growth phase of melanoma. Thus, it is concluded that there is greater expression of mRNA and its importance in the stages of development of melanoma, both in recent processes and in the processes of migration, invasion and metastasis. In addition, we found higher receptor mRNA in strains resistant to vemurafenib. This result supports the hypothesis that AhR can be considered a marker of resistance in melanomas. AhR, initially in the cytoplasm, when activated can act as a transcription factor regulating several genes that have defined sequences, participating in carcinogenic responses. Along with this, we show that along the tumor progression, there is an increase in AhR in the radial growth phase of melanoma. Halogenated compounds and endogenous molecules derived from the tryptophan metabolism pathways are receptor agonists. Previously, our group showed that melanoma strains incubated with tryptamine and DMT exhibited less clonogenicity. In view of a scarce literature on the role of DMT in melanoma and based on these results, our objective was to evaluate the role of AhR in this DMT-melanoma interface. For this, our goal was to build genetically edited strain for AhR using the CRISPR-Cas9 tool. Several efforts were unsuccessful in attempts to prove the maintenance of cells edited in the culture. We linked to this result the possibility of having two subpopulations genetically edited after CRISPR-Cas9, where one of them maintained the growth pattern like wild type cells. Due to this differential growth, we did not obtain congruence in the tests and postulated the loss of the possible knockout. From that, we performed interactome assays to evaluate the DMT-AhR interaction. Our result suggests the interaction of DMT with the sigma 1 receptor, and not the aryl hydrocarbon receptor. Thus, the interactome supports the hypothesis that DMT is not an AhR ligand. To certify this result, docking analyses associated with biological assays, evaluating the role of the receptor, should be performed to ascertain the affinity and selectivity of DMT as a ligand of the receptor in the melanoma lineage

Aspectos histopatológicos comparativos da pele de orelha e abdômen de cães naturalmente infectados por Leishmania infantum / Comparative histopathological aspects of the ear and abdomen skin of dogs naturally infected by Leishmania infantum

A leishmaniose visceral (LV) representa um importante problema de saúde pública. O cão é considerado o principal reservatório doméstico, pois mesmo quando assintomático pode apresentar carga detectável de Leishmania na pele sadia possuindo capacidade de infectar o vetor. As lesões de pele em cães acometidos por LV têm sido frequentemente observadas, e a pele da orelha tem mostrado uma maior intensidade de alterações inflamatórias, além de uma maior carga parasitária em relação a outros locais analisados. No entanto, as alterações vasculares na derme e possível correlação com o aumento da carga parasitária e disseminação do parasito pela pele ainda não estão completamente estabelecidas. O objetivo deste estudo foi avaliar as alterações inflamatórias e vasculares em pele de orelha e abdômen de cães naturalmente infectados por Leishmania infantum e sua correlação com a carga parasitaria e a sintomatologia clínica. Vinte e seis cães positivos no teste DPP®CVL e ELISA foram incluídos nesse estudo. Após avaliação clínica, os animais foram divididos em grupos: 1- assintomáticos; 2- sintomáticos. Observamos que os sinais clínicos dermatológicos são observados com maior frequência em relação a outros sinais clínicos, sendo a dermatite o sinal clínico dermatológico mais observado. Os fragmentos de pele de orelha mostraram carga parasitária elevada independente da progressão da doença e distribuída de forma mais difusa. Foi observado também maior intensidade de infiltrado inflamatório em relação a pele de abdômen, além de maior reação granulomatosa. A menor quantidade de colágeno foi observada em pele de orelha e se associou com o maior número e distribuição da carga parasitária pelo tecido. Ao analisar as alterações vasculares, em ambos os grupos, a pele da orelha apresentou vasos sanguíneos com maior diâmetro e maior número em relação àqueles da pele de abdômen. Foi possível observar correlação positiva entre o número de amastigotas e o número de vasos presentes na derme, assim como associação entre a presença de amastigotas e intensidade do infiltrado inflamatório. Em conjunto, os dados sugerem uma relação entre as alterações vasculares e a disseminação do parasito pela pele de cães possivelmente impactando no seu papel como reservatório da LV. Além disso, indicam que a pele da orelha se mostrou um sítio interessante para a coleta de amostras clínicas para diagnóstico devido a maior probabilidade de detecção de amastigotas. (AU)

Visceral leishmaniasis (VL) represents a very important public health problem. The dog is considered the main domestic reservoir, because even when asymptomatic it can have a detectable Leishmania load in the healthy skin, being able to infect the vector. Skin lesions in dogs affected by VL have been frequently observed, and the skin of the ear has shown a higher intensity of inflammatory changes, in addition to a higher parasite load in relation to other sites analyzed. However, the vascular changes in the dermis and possible correlation with increased parasite load and parasite spread through the skin are not yet fully established. The aim of this study was to evaluate inflammatory and vascular changes in the skin of the ear and abdomen of dogs naturally infected with Leishmania infantum and their correlation with parasite load and clinical symptoms. Twenty-six dogs positive for DPP®CVL and ELISA were included in this study. After clinical evaluation, the animals were divided into groups: 1- asymptomatic; 2- symptomatic. We observed that dermatological clinical signs are observed more frequently than other clinical signs, with dermatitis being the most observed dermatological clinical signEar skin fragments showed high parasite load independent of disease progression and more diffusely distributed. A greater intensity of inflammatory infiltrate was also observed in relation to the skin of the abdomen, in addition to a greater granulomatous reaction. The lowest amount of collagen was observed in the ear skin and was associated with the highest number and distribution of the parasite load in the tissue. When analyzing the vascular alterations, in both groups, the ear skin presented blood vessels with larger diameter and greater number in relation to those of the abdomen skin. It was possible to observe a positive correlation between the number of amastigotes and the number of vessels present in the dermis, as well as an association between the presence of amastigotes and the intensity of the inflammatory infiltrate. Taken together, the data suggest a relationship between vascular changes and the spread of the parasite through the skin of dogs possibly impacting on their role as a VL reservoir. Furthermore, they indicate that the skin of the ear proved to be an interesting site for collecting clinical samples for diagnosis due to the higher probability of amastigotes detection. (AU)

Medical adhesive-related skin injury in cancer patients: A prospective cohort study / Lesión cutánea relacionada con adhesivos médicos en pacientes con cáncer: cohorte prospectiva / Lesão de pele relacionada a adesivo médico em paciente com câncer: coorte prospectiva

Objective: to estimate the incidence of medical adhesive-related skin injury in the peripheral venous catheter fixation region in critical cancer patients, to identify risk factors, and to establish a risk prediction model for its development. Method: a prospective cohort study with a sample of 100 adult and aged patients hospitalized in an intensive care unit. The data were analyzed using descriptive, bivariate and multivariate statistics with Cox regression. Results: the incidence of medical adhesive-related skin injury was 31.0% and the incidence density was 3.4 cases per 100 people-days. The risk factors were as follows: alcoholism, smoking habit, hospitalization due to deep vein thrombosis, acute respiratory failure, immediate postoperative period, heart disease, dyslipidemia, use of antiarrhythmics, blood transfusion, friction injury, pressure injury, turgor, edema, hematoma, petechiae, low values in the Braden scale, clinical severity of the patient, elasticity, moisture, texture and color. The predictive model consisted in the following: decreased skin turgor, presence of hematoma and edema. Conclusion: medical adhesive-related skin injury at the peripheral venous catheter insertion site has a high incidence in critical cancer patients and is associated with decreased turgor, presence of hematoma and edema, evidence that can support the clinical practice.

Objetivo: estimar la incidencia de lesión cutánea relacionada con adhesivos médicos en la región de fijación del catéter venoso periférico en pacientes oncológicos críticos, identificar factores de riesgo y establecer un modelo de predicción de riesgo para su desarrollo. Método: cohorte prospectiva con una muestra de 100 pacientes adultos y adultos mayores ingresados en una unidad de terapia intensiva. Los datos se analizaron mediante estadística descriptiva, bivariada y multivariada con regresión de Cox. Resultados: la incidencia de lesión cutánea relacionada con adhesivos médicos fue del 31,0% y la densidad de incidencia fue de 3,4 casos por 100 personas-día. Los factores de riesgo fueron: alcoholismo, tabaquismo, hospitalización por trombosis venosa profunda, insuficiencia respiratoria aguda, postoperatorio inmediato, cardiopatía, dislipidemia, uso de antiarrítmicos, transfusión de sangre, lesión por fricción, lesión por presión, turgencia, edema, hematoma, petequias, bajos valores en la escala de Braden, gravedad clínica del paciente, elasticidad, humedad, textura y coloración. El modelo predictivo estuvo compuesto por: disminución de la turgencia cutánea, presencia de hematomas y edema. Conclusión: la lesión cutánea relacionada con adhesivos médicos en el sitio de inserción del catéter venoso periférico tiene una alta incidencia en pacientes oncológicos críticos y se asocia a disminución de la turgencia, presencia de hematoma y edema, dicha evidencia puede servir de base para la práctica clínica.

Objetivo: estimar a incidência de lesão de pele relacionada a adesivo médico em região de fixação de cateter venoso periférico em pacientes oncológicos críticos, identificar fatores de risco e estabelecer modelo de predição de risco para o seu desenvolvimento. Método: coorte prospectiva com amostra de 100 pacientes adultos e idosos internados em unidade de terapia intensiva. Os dados foram analisados por estatística descritiva, bivariada e multivariada com regressão de Cox. Resultados: a incidência da lesão de pele relacionada a adesivo médico foi de 31,0% e a densidade de incidência foi de 3,4 casos por 100 pessoas-dia. Os fatores de risco foram: etilismo, tabagismo, internação por trombose venosa profunda, insuficiência respiratória aguda, pós-operatório imediato, cardiopatia, dislipidemia, uso de antiarrítmico, hemotransfusão, lesão por fricção, lesão por pressão, turgor, edema, hematoma, petéquias, valores baixos na escala de Braden, gravidade clínica do paciente, elasticidade, umidade, textura e coloração. Compuseram o modelo preditivo: turgor de pele diminuído, presença de hematomas e edema. Conclusão: a lesão de pele relacionada a adesivo médico em sítio de inserção de cateter venoso periférico tem elevada incidência em pacientes oncológicos críticos e está associada ao turgor diminuído, presença de hematoma e edema, evidências essas que podem embasar a prática clínica.

Avaliação morfo-histológica e morfo-histométrica de feridas cutâneas tratadas com Sphagneticola trilobata (L) Pruski em ratos / [Morphohistological and morphohistometric evaluation of skin wounds treated with Sphagneticola trilobata (L) Pruski in rats]

O objetivo deste trabalho foi avaliar macro e microscopicamente a atividade cicatrizante da Sphagneticola trilobata em feridas cutâneas induzidas em ratos, a partir da aplicação de creme contendo extrato hidroalcoólico bruto de folhas da planta. A análise fitoquímica apresentou terpenos e flavonoides como compostos majoritários. Sessenta ratos foram divididos em três grupos experimentais (n=20): grupo tratado (GT), grupo controle (GC) e grupo controle absoluto (GCA). Quatro feridas excisionais de 0,8cm de diâmetro foram realizadas no dorso dos animais, tratadas diariamente e avaliadas nos tempos três, sete, 14 e 21 dias de pós-operatório (PO) quanto à contração e à avaliação macroscópica, morfo-histológica e morfo-histométrica. Macroscopicamente, não houve diferença estatística na contração das feridas entre os grupos testados. Na avaliação morfológica e na morfométrica, o GT apresentou menor concentração de células inflamatórias, maior e melhor preenchimento do tecido de granulação pelas fibras colágenas e melhor vascularização das feridas. Não houve diferença entre o GC e o GCA. Conclui-se que o creme à base do extrato hidroalcoólico bruto das folhas de Sphagneticola trilobata contribui positivamente para o processo de cicatrização das feridas em pele de ratos.(AU)

The objective of this work was to macro and microscopically evaluate the healing activity of Sphagneticola trilobata in rat-induced skin wounds by applying cream containing crude hydroalcoholic extract from plant leaves. The phytochemical analysis showed terpenes and flavonoids as major compounds. Sixty rats were divided into three experimental groups (n=20): treated group (GT), control group (CG) and absolute control group (GCA). Four 0.8cm diameter excision wounds were performed on the back of the animals, treated daily and evaluated at the three, seven, 14 and 21 postoperative days (PO) for contraction, macroscopic, morphologic and morphologic evaluation. The TG presented smaller scar area at 21 postoperative days (P<0.05). In the morphological and morphometric evaluation, the WG presented lower inflammation, greater and better filling of granulation tissue by collagen fibers and better wound vascularization. There was no difference between GC and GCA. It was concluded that the cream based on the crude hydroalcoholic extract of Sphagneticola trilobata leaves contribute positively to the healing process of the skin wounds of rats.(AU)