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1.
An. R. Acad. Nac. Farm. (Internet) ; 89(1): 109-115, Enero-Marzo 2023.
Artigo em Espanhol | IBECS | ID: ibc-219537

RESUMO

Este discurso de ingreso en la Real Academia Nacional de Farmacia trata de dar una visión de la plata a través de la historia desde su citación en el Génesis pasando por los hallazgos arqueológicos de Asia Menor, Egipto, las monedas griegas o la alquimia hasta la actualidad, destacando su significado desde el punto de vista económico, social y de poder. También se realiza un breve repaso a sus características como elemento físico y químico, así como de su obtención, depósito y valor. Asimismo, se hace un breve repaso de su incorporación a la cultura popular, como adivinanzas, refranes, etc. además de ser utilizado en infinidad de circunstancias como símbolo de riqueza, al respaldar los sistemas monetarios y como moneda cuyo uso alcanza el 70% de su producción. Se detallan las múltiples cualidades de la plata como elemento no medicinal y de sus aplicaciones, pero, fundamentalmente, se aborda finalmente sus propiedades y aplicaciones terapéuticas, su toxicidad y su utilidad en los campos de la dermatología, como agente antimicrobiano, en la odontología, como suplemento alimentario y su reciente aplicación con la incorporación de las manopartículas de plata en el campo de la terapia oncológica, aún muy discutida y en estudio. (AU)


This admission speech at the Royal National Academy of Pharmacy tries to give a vision of silver through history from its citation in Genesis through the archaeological finds of Asia Minor, Egypt, Greek coins or alchemy up to the present , highlighting its significance from the economic, social and power point of view. There is also a brief review of its characteristics as a physical and chemical element, as well as its obtaining, deposit and value. Likewise, a brief review is made of its incorporation into popular culture, such as riddles, proverbs, etc. In addition to being used in countless circumstances as a symbol of wealth, to support monetary systems and as a currency whose use reaches 70% of its production. The multiple qualities of silver as a non-medicinal element and its applications are detailed, but fundamentally, its properties and therapeutic applications, its toxicity and its usefulness in the fields of dermatology, as an antimicrobial agent, in dentistry, are finally addressed. As a food supplement and its recent application with the incorporation of silver nanoparticles in the field of cancer therapy, still highly discussed and under study. (AU)


Assuntos
Humanos , Prata/história , Antibacterianos/história , Antibacterianos/farmacologia , Nanopartículas/história , Partículas Coloidais/história , Nanopartículas/uso terapêutico
2.
Int. microbiol ; 26(1): 143-147, Ene. 2023. graf
Artigo em Inglês | IBECS | ID: ibc-215925

RESUMO

Introduction: The present study aimed to investigate the antifungal activity of silver nanoparticles (SNPs) against agents of suspected rhino orbital mucormycosis. Methods: Thirty-two strains were isolated from endoscopy-guided nasal swab and/or tissue biopsy after debridement/surgery on Sabouraud dextrose agar without cyclohexamide. Antifungal activity was conducted according to Clinical and Laboratory Standards Institute’s (CLSI) guidelines, M38-A2. The average size of silver nanoparticle was less than 10 nm. Results: Minimum inhibitory concentration (MIC) of nanoparticles of all strains was in the concentration range of 1–64 μg/ml and minimal fungicidal concentration (MFC) at 16–512 μg/ml. Conclusion: The SNPs revealed significant antifungal activity against agents of invasive mycosis.(AU)


Assuntos
Humanos , Antifúngicos , Nanopartículas , Mucormicose , Prata , Aspergilose , Testes de Sensibilidade Microbiana , Microbiologia , Pesquisa
4.
Rev. Rol enferm ; 45(2): 30-33, feb. 2022. ilus
Artigo em Espanhol | IBECS | ID: ibc-207207

RESUMO

Presentamos un caso clínico de una mujer joven que desarrolló una úlcera por presión(UPP)en talón con un eritema y dermatitis perilesional importante, como consecuencia del aumento de exudado.La aparición de una upp supone un aumento de cargas y problemas al pacien-te, pero si además se le añade un mal control del exudado, todo ello nos deriva en una complicación de la piel perilesional, que acaba produciendo una lesión cutánea por humedad asociada al exudado (LESCAH).Estas lesiones se caracterizan por un tipo de dermatitis y / o eczema con inflamación y eritema, con o sin excoriación de la epidermis, y generalmente acompañada de maceración.Tras el uso de varios tratamientos fallidos, se decide el uso de la plata en spray con ácido hialurónico con la finalidad de reparar el daño de la dermis, corregir la ligera infección y recuperar la actividad normal en su vida diaria.El spray consiste en una fórmula a base de sal sódica de ácido hialurónico (AH) y plata metálica. Dicha combinación favorece la acción antimicrobiana por la plata, y el ácido hialurónico en la cicatrización es fundamental, ya que favorece la reparación de la matriz extracelular, y colabora en procesos de migración, proliferación y diferenciación celular. (AU)


We present a clinical case of a young woman who developed a heel pressure ulcer (pressure ulcer) with significant erythema and perilesional dermatitis as a result of increased exudate.The appearance of an upp is an increase of burdens and problems to the pa-tient, but if we add to it and poor control of exudate, all this leads to a complica-tion of the perilesional skin, which ends up producing a skin lesion by moisture associated with exudate (LESCAH).These lesions are characterized by a type of dermatitis and/or eczema with inflammation and erythema, with or without excoriation of the epidermis and generally accompanied by maceration.After the use of several unsuccessful treatments, it was decided to use silver spray with hyaluronic acid.In order to repair the damage of the dermis, correct the slight infection and recover normal activity in daily life.The spray consists of a formula based on sodium salt of hyaluronic acid (HA) and metallic silver. The combination of which favors the antimicrobial action of silver and hyaluronic acid in the healing process is essential, promotes the repair of the extracellular matrix and collaborates in processes of migration, proliferation and cell differentiation. (AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Lesão por Pressão/tratamento farmacológico , Dermatite , Líquido do Sulco Gengival , Ácido Hialurônico , Prata
5.
Med. oral patol. oral cir. bucal (Internet) ; 25(1): e29-e33, ene. 2020. ilus
Artigo em Inglês | IBECS | ID: ibc-196193

RESUMO

BACKGROUND: The aim of this research was to study anti-microbial and anti-inflammatory characteristics of silver nanoparticles helping bone structures to recover during late stage of parodontitis, which afterwards will increase the effect of bone regeneration operations. MATERIAL AND METHODS: We assessed colloid solution-derived silver nanoparticles coating of polylactic acid membrane regarding tissue foreign body response. Thirty eight polylactic acid membranes were implanted intracranially in rabbits ten unmodified (control group) and twenty eight with silver nanoparticles coating (experimental group). In controls, penicillin was used for infection prophylaxis. Tissue response was assessed by light microscopy and immunohistochemistry (CD3, CD15, CD30) 2 weeks after implantation. RESULTS: inflammation markers in experimental group were significantly lower than in control group, there were no signs of forming a fibrosis capsule nor infectious signs. CONCLUSIONS: colloid silver solution can be used as a source of nanoparticles for anti-microbial and antiinflammatory biodegradable membranes' coating


No disponible


Assuntos
Animais , Masculino , Coelhos , Nanopartículas Metálicas/química , Prata/farmacologia , Poliésteres/farmacologia , Anti-Inflamatórios/farmacologia , Anti-Infecciosos/farmacologia , Osso Occipital/efeitos dos fármacos , Poliésteres/química , Prata/química , Anti-Inflamatórios/química , Anti-Infecciosos/química , Imuno-Histoquímica , Osso Occipital/patologia , Regeneração Óssea/efeitos dos fármacos , Reprodutibilidade dos Testes
6.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 63(5): 342-345, sept.-oct. 2019. tab
Artigo em Espanhol | IBECS | ID: ibc-188925

RESUMO

Introducción: Las fracturas de tobillo representan un 10% del total de fracturas. La mayor parte requieren tratamiento quirúrgico, que conlleva un importante riesgo de complicaciones de la herida. El objetivo de este estudio ha sido determinar si los apósitos impregnados con plata (Aquacel Ag Extra(R)) reducen la tasa de complicaciones de la herida quirúrgica tras el tratamiento de las fracturas de tobillo en comparación con el uso de gasas estériles. Métodos: De forma prospectiva se han reunido 233 pacientes con fracturas de tobillo subsidiarias de tratamiento quirúrgico. Desde el inicio del estudio en julio de 2017 hasta febrero de 2018, los traumatólogos participantes en el estudio cambiaron el uso de la gasa estéril estándar para cubrir la herida quirúrgica tras su cierre por Aquacel Ag Extra(R), manteniendo el resto del protocolo pre- y posquirúrgico igual. Se comparan la tasa de complicaciones cutáneas en ambos grupos, tras un seguimiento de 3 meses. Resultados: El análisis estadístico no reflejó diferencias significativas entre ambos grupos. Conclusiones: Se necesitan ensayos clínicos aleatorizados para demostrar las ventajas teóricas de los apósitos impregnados con plata y su indicación en Traumatología


Introduction: Ankle fractures account for up to 10% of total fractures. Most of them require surgical fixation, which involves an important risk of wound complications. The aim of this study was to determine whether a silver-impregnated occlusive surgical dressing (Aquacel Ag Extra(R)) was effective in reducing the rates of wound complications after ankle fracture open reduction and internal fixation compared to standard sterile dressing. Methods: We prospectively reviewed 233 patients who underwent ankle fracture open reduction and internal fixation. Surgeons switched from using a standard dressing to an Aquacel Ag Extra(R) from July 2017 to February 2018, without other major changes in perioperative management. We compared skin complications between both groups after 3 months' follow-up. Results: The statistical analysis showed that there is no difference in the prevalence of skin complications between both groups. Conclusions: The theoretical advantages of silver impregnated dressings need further prospective randomized controlled studies to assess the appropriate indications for their use in orthopaedic surgery


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Fraturas do Tornozelo/cirurgia , Anti-Infecciosos/uso terapêutico , Carboximetilcelulose Sódica/uso terapêutico , Curativos Oclusivos , Prata/uso terapêutico , Deiscência da Ferida Operatória/prevenção & controle , Infecção da Ferida Cirúrgica/prevenção & controle , Seguimentos , Fixação Interna de Fraturas , Incidência , Redução Aberta , Cuidados Pós-Operatórios/métodos , Estudos Prospectivos , Deiscência da Ferida Operatória/epidemiologia , Infecção da Ferida Cirúrgica/epidemiologia , Resultado do Tratamento
7.
Rev. iberoam. micol ; 36(3): 120-128, jul.-sept. 2019. ilus, tab, graf
Artigo em Inglês | IBECS | ID: ibc-191400

RESUMO

Background: In the last three decades the species of Candida have been of great interest due to the high mortality rates that they cause in immunocompromised and hospitalized patients. These species are opportunistic pathogens and they have inhabited other environments long before colonizing human cells. Among these environments we find wastewater from mines, and water from aquifers and soils that contain high concentrations of precious metals as well as toxic and base metals. Aims: The aim of this study was to assess whether Candida albicans and Candida glabrata are able to maintain homeostasis in the presence of zinc, copper, cobalt or silver. Methods: To achieve the objective, each of the Candida species was exposed to every single metal individually in a salt solution. Subsequently the treated cells were lysed to evaluate the compounds formed by means of Scanning Electron Microscopy-Energy Dispersive X-ray spectroscopy (SEM-EDS). Results: When analyzing the compounds that both C. albicans and C. glabrata formed in the presence of each of the metals, we found that they had synthesized silver sulfide (Ag2S), cobalt sulfate (CoSO4), zinc phosphate (Zn3(PO4)2), or copper oxide (CuO). Conclusions: Our results indicate that both C. albicans and C. glabrata have enzymatic and non-enzymatic mechanisms that allow them to achieve homeostasis in a different specific manner for each of the single metals to which they were exposed. To our knowledge, this is the first work reporting that C. albicans and C. glabrata can reduce different metals, with the subsequent formation of sulfides, sulfates, phosphates and oxides. This ability, developed over time by these Candida species, is probably a kind of biochemical mechanism in order to survive and colonize many different environments, from water or soil to humans. For this reason, C. albicans and C. glabrata make up an excellent model of study, both from a medical and biotechnical point of view


Antecedentes: Las especies de Candida han cobrado gran interés en las últimas tres décadas debido a los altos índices de mortalidad que ocasionan en pacientes inmunodeficientes y hospitalizados. Estas especies son consideradas patógenas oportunistas y existen otros medios ambientes que estas levaduras han habitado mucho antes de haber colonizado al ser humano: aguas residuales de minas, agua de mantos acuíferos y suelos que contienen altas concentraciones de metales preciosos, metales tóxicos y metales comunes. Objetivos: El objetivo del presente trabajo fue evaluar si Candida albicans y Candida glabrata eran capaces de mantener la homeostasis en presencia de los elementos químicos cinc, cobre, cobalto y plata. Métodos: Para lograr el objetivo, las dos levaduras fueron expuestas a cada uno de los metales elegidos de manera independiente, y posteriormente las células tratadas fueron lisadas para permitir la evaluación por medio de microscopía electrónica de barrido con espectrometría de dispersión de energía de rayos X (SEM-EDS) del compuesto formado. Resultados: Al analizar los compuestos que tanto C. albicans como C. glabrata formaron en presencia de cada metal, se encontró que habían sintetizado sulfuro de plata (Ag2S), sulfato de cobalto (CoSO4), fosfato de cinc (Zn3(PO4)2), u óxido de cobre (CuO). Conclusiones: Nuestros resultados indican que tanto C. albicans como C. glabrata poseen mecanismos enzimáticos y no enzimáticos que les permiten alcanzar una homeostasis de manera específica para cada metal al que son expuestas. A nuestro entendimiento este es el primer trabajo que documenta que C. albicans y C. glabrata pueden reducir distintos metales, con la subsecuente formación de sulfuros, sulfatos, fosfatos y óxidos. Esta habilidad que pudieron desarrollar a lo largo del tiempo estas especies de Candida para poder sobrevivir y colonizar medios ambientes tan diferentes, que van desde el agua o los suelos hasta el ser humano, las convierte en un excelente modelo de estudio, tanto desde el punto de vista médico como biotecnológico


Assuntos
Humanos , Candida albicans/efeitos dos fármacos , Candida glabrata/efeitos dos fármacos , Zinco/farmacocinética , Cobalto/farmacocinética , Prata/farmacocinética , Cobre/farmacocinética , Homeostase/efeitos dos fármacos , Microscopia Eletrônica de Varredura/métodos , Espectrometria por Raios X/métodos , Técnicas In Vitro/métodos
8.
Int. microbiol ; 22(2): 239-246, jun. 2019. ilus, graf, tab
Artigo em Inglês | IBECS | ID: ibc-184830

RESUMO

Silver nanoparticles (SN) have been recently developed as a new class of antimicrobial agents against numerous pathogenic microorganisms. SN have also been used as efficient drug delivery systems and have been linked with increasing drug potency. Here, we demonstrated the enhanced antifungal efficacy of nystatin (NYT) and fluconazole (FLU) after conjugation with SN. The antifungal bioactivity of NYT- and FLU-coated SN was evaluated against Candida albicans ATCC 10231 and Aspergillus brasiliensis ATCC 16404 by the agar tube dilution method. The aim of this study was to determine and compare the antifungal efficacy of NYT and FLU with their SN and, finally, the combination of both nanoparticles as NYT-SN + FLU-SN against pathogenic fungi. The results indicated that all test samples showed a dose-dependent response against tested fungi. SN significantly enhanced the antifungal effects of NYT and FLU as compared to drugs alone. We observed a remarkable increase in the percent inhibition of both fungi (90-100%) when treated with a combination of both nanoparticles NYT-SN + FLU-SN at 200 μg/mL only. Furthermore, the morphological modifications occurred at the surface of fungal species were also analyzed by atomic force microscopy (AFM) and scanning electron microscopy (SEM). While tested against primary human cell line, all SN showed negligible cytotoxicity. Hence, these results suggest that the combination of SN with NYT and FLU may have clinical implications in the treatment of fungal infections. However, in vivo studies are needed before recommending the use of these nanoparticles safely in clinical situations


No disponible


Assuntos
Antifúngicos/farmacologia , Aspergillus/efeitos dos fármacos , Candida albicans/efeitos dos fármacos , Sinergismo Farmacológico , Nanopartículas Metálicas , Prata/farmacologia , Fluconazol/farmacologia , Nistatina/farmacologia , Aspergillus/ultraestrutura , Candida albicans/ultraestrutura , Testes de Sensibilidade Microbiana , Microscopia de Força Atômica , Microscopia Eletrônica de Varredura , Propriedades de Superfície/efeitos dos fármacos
9.
Int. microbiol ; 22(1): 49-58, mar. 2019. ilus, graf
Artigo em Inglês | IBECS | ID: ibc-184813

RESUMO

Green route for silver nanoparticle synthesis has gained increasing attention. Cyanobacteria are one of the promising organisms to produce a number of secondary metabolites that are capable of reducing silver ions to small-sized silver nanoparticles. In the present study, we employed an aqueous extract of the cyanobacterium Haloleptolyngbya alcalis KR2005/106 isolated from a soda lake for biosynthesis of silver nanoparticles (AgNPs). The extract acted as a reducing agent for AgNPs synthesis and resulted formation of nanoparticles <50 nm in size. In this study, synthesis of AgNPs obtained only in the sample exposed to photosynthetically active radiation (PAR) while the synthesis of AgNPs was not observed in the samples kept in dark. The biogenic fabrication of AgNPs was carried out by optimizing several governing parameters such as concentration of the silver nitrate solution, pH, temperature, and amount of biomass. Results obtained through different analytical techniques revealed that cyanobacterial taxon H. alcalis isolated from saline-alkaline habitat is a potential candidate for biosynthesis of optimum-sized spherical AgNPs. Surface plasmon resonance (SPR) property of AgNPs was exploited for aqueous ammonia sensing and revealed that AgNPs synthesized using aqueous extract of cyanobacterium H. alcalis could be employed for colorimetric detection of dissolved ammonia for monitoring quality of water


No disponible


Assuntos
Amônia/análise , Misturas Complexas/metabolismo , Cianobactérias/metabolismo , Nanopartículas Metálicas , Prata/metabolismo , Nitrato de Prata/metabolismo , Cianobactérias/isolamento & purificação , Escuridão , Lagos/microbiologia , Luz , Oxirredução , Ressonância de Plasmônio de Superfície
10.
Med. oral patol. oral cir. bucal (Internet) ; 24(2): e156-e164, mar. 2019. tab, ilus, graf
Artigo em Inglês | IBECS | ID: ibc-180638

RESUMO

Background: The aim was to evaluate the effect of silver loaded nanoparticles (NPs) application on the triboscopic, crystallographic and viscoelastic properties of demineralized dentin. Polymethylmetacrylate-based NPs and Ag loaded NPs were applied on demineralized dentin. Material and Methods: Treated and untreated surfaces were probed by a nanoindenter to test viscoelasticity, and by atomic force microscopy to test nanoroughness and collagen fibril diameter. X-ray diffraction and transmission electron microscopy through selected area diffraction and bright-field imaging were also used. Results: Dentin treated with Ag-NPs attained the lowest complex modulus, and the highest tan delta values after 7 days of storage. Dentin treated with undoped-NPs achieved the lowest nanoroughness and the greatest collagen bandwidths among groups. Crystals were identified as hydroxyapatite with the highest crystallographic maturity and crystallite size in dentin treated with undoped-NPs. Texture increased in all samples from 24 h to 7 d, except in dentin surfaces treated with Ag-NPs at 310 plane. Polyhedral, block-like, hexagonal or plate-like shaped apatite crystals constituted the bulk of minerals in dentin treated with Ag-NPs, after 7 d. Polyhedral or rounded/drop-like, and polymorphic in strata crystal apatite characterized the minerals when undoped-NPs were used, with more crystalline characteristics after 7 d than that found when Ag-NPs were applied. Ag-NPs application did not improve the mechanical performance of dentin and did not produce dentin remineralization. However, energy was dissipated through the dentin without showing stress concentration; contrary was occurring at dentin treated with undoped- NPs, that provoked bridge-like mineral deposits at the dentin surface. Conclusions: Ag-NPs application did not enhance the mechanical properties of cervical dentin, though the energy dissipation did not damage the dentin structure. Remineralization at dentin was not produced after Ag-NPs appli-cation, though improved crystallinity may lead to increase stability of the apatite that was generated at the dentin surface


No disponible


Assuntos
Humanos , Dentina/fisiopatologia , Nanopartículas Metálicas/uso terapêutico , Prata/uso terapêutico , Desmineralização do Dente/terapia , Remineralização Dentária/métodos , Calcificação Fisiológica/fisiologia
11.
Rev. esp. med. prev. salud pública ; 22(3): 55-58, 2016. tab
Artigo em Espanhol | IBECS | ID: ibc-157496

RESUMO

Una de las causas origen de infecciones nosocomiales se encuentra en la contaminación del entorno del paciente. Los picaportes de las puertas o los carros de curas se encuentran libres de gérmenes muy poco tiempo tras su limpieza. (Carling, ICHE 2008) En el Hospital Nisa 9 de Octubre de Valencia Se ha llevado a cabo un estudio a doble ciego del efecto en la contaminación de las superficies mediante la aplicación de BactiBlock(R) 660 AO Antimicrobial Metal Coating, con tecnología basada en iones de plata incorporados en nanopartículas de arcilla. El estudio se efectuó sobre pomos de las puertas de habitaciones y sobre las asas y bandejas de los carros de curas, elegidos aleatoriamente. Los resultados demuestran que una única aplicación de Bactiblock(R) 660 AO Antimicrobial Metal Coating mantiene las superficies tratadas en un estado aséptico óptimo, después de un mínimo de 8 semanas


One of the causes of nosocomial infections origin is in the patient’s environment pollution. The doorknobs or the cures cars are free of germs very short time after cleaning. (Carling, ICHE 2008) At the Nisa 9 de Octubre Hospital of Valencia, it has conducted a double-blind study of the effect on the contamination of surfaces by applying BactiBlock(R) 660 AO Antimicrobial Metal Coating, with technology based on silver ions embedded in nanoparticles of clay. The study was conducted on doorknobs room and on the handles and tray cures cars, chosen randomly. The results show that a single application of Bactiblock(R) 660 AO Antimicrobial Metal Coating maintains the treated surfaces in optimum aseptic state after at least 8 weeks


Assuntos
Humanos , Infecção Hospitalar/prevenção & controle , Contaminação de Equipamentos/prevenção & controle , Serviço Hospitalar de Limpeza/normas , Espanha , Método Duplo-Cego , Anti-Infecciosos/uso terapêutico , Íons/uso terapêutico , Prata/uso terapêutico
12.
Acta pediatr. esp ; 71(8): 165-171, sept. 2013. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-116755

RESUMO

El empleo de apósitos antimicrobianos impregnados con plata constituye una alternativa segura en el tratamiento de las quemaduras. Sin embargo, el manejo de dichos apósitos es a veces complejo y molesto para el paciente y el profesional. Presentamos nuestros primeros resultados en el empleo de un apósito antimicrobiano con plata, carbón activo y tecnología Safetac®. Aplicamos el apósito en el tratamiento de 27 pacientes con quemaduras. Los cambios de apósito se efectuaron cada 5 días. La mayoría de los casos no precisaron anestesia y fueron tratados de forma ambulatoria. El uso de los apósitos antimicrobianos de plata y tecnología Safetac® permite una epitelización rápida de las quemaduras sin sobreinfección. El cambio de apósitos no genera traumatismo sobre la piel perilesional ni dolor para el paciente. Presenta una mayor comodidad de manejo, dada su capacidad autoadhe­siva, las buenas propiedades de control de exudado y la ventaja de mantener un ambiente húmedo. El requerimiento de menos estancia hospitalaria y de menos material y personal sanitario para sus curas hace que tenga una buena relación coste-efectividad (AU)


The use of antimicrobial dressings impregnated with silver is a safe alternative in the treatment of burns. However, the management of these dressings is often complex and uncomfortable for patient and professional. We present our first results in the use of an antimicrobial dressings with silver and Safetac® technology. We apply the dressing in the treatment of 27 patients with burns. Dressing changes were made every 5 days. The majority of the cases did not require anesthesia and were performed on an outpatient basis. The use of antimicrobial silver dressings with Safetac® technology allows a rapid epithelialization of burns without reinfection. The dressing change does not create trauma on surrounding skin or pain to the patient. It has a good handling management due to its adhesive capacity, good exudate control properties and the advantage of maintaining a moist environment. The requirement of less hospitalization, medical equipment and personnel for their cures, gives it a cost-effectiveness (AU)


Assuntos
Humanos , Bandagens , Queimaduras/terapia , Carvão Vegetal/uso terapêutico , Estudos Prospectivos , Prata/uso terapêutico , Avaliação de Custo-Efetividade
14.
Cir. Esp. (Ed. impr.) ; 89(8): 532-538, oct. 2011. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-93133

RESUMO

Objetivos: Evaluar las propiedades antimicrobianas de una espuma de poliuretano que libera iones de plata sobre diversos microorganismos. Se estudia la difusión al medio de Ag+, así como la posible citotoxicidad sobre células humanas. Material y métodos Estudio de liberación de plata de V.A.C. GranuFoam Silver® mediante espectrometría de masas (Inductively Coupled Plasma Mass). Estudio experimental in vitro para evaluar la capacidad bactericida mediante curvas de letalidad sobre A. baumannii, P. aeruginosa, S. maltophilia, K. pneumoniae, E. coli, P. mirabilis, S. aureus resistente a meticilina, E. faecium, S. pyogenes y C. minutissimum. Estudio de citotoxicidad sobre fibroblastos humanos. Resultados La liberación de Ag+ muestra una curva exponencial con una fase estable de meseta a partir de las 3h, con niveles de 0,22-0,24mg/l. En 3h se logró una reducción superior al 99,9% en todos los gramnegativos excepto en E. coli que fue del 92,5%. La reducción fue superior al 99% a las 2h en S. pyogenes y C. minutissimum, a las 6h en S. aureus y a las 14h en E. faecium. En simulación in vivo estas reducciones se alcanzaron en 6h en los gramnegativos y en 24h en los grampositivos. Las concentraciones de Ag+ no fueron citotóxicas sobre fibroblastos humanos, sin observar diferencias entre las células expuestas a Ag+ y los controles (p = 0,7).Conclusión V.A.C. Granufoam Silver® liberó concentraciones bactericidas de Ag+ que no fueron perjudiciales para los fibroblastos humanos. Se presenta como una buena alternativa para el control y prevención local de las infecciones (AU)


Introduction: The antimicrobial properties of a silver ion (Ag+)-releasing polyurethane foam were evaluated using different microorganisms. The diffusion of Ag+ from the medium, aswell as any possible cytotoxicity on human cells, was also studied. Material and methods: Silver release from V.A.C. Granu Foam Silver1 was assessed by using inductively coupled plasma mass spectrometry (ICP-MS). An in vitro experimental study was designed to evaluate the bactericide capacity using lethal dose curves on A. baumannii,P. aeruginosa, S. maltophilia, K. pneumoniae, E. coli, P. mirabilis, methicillin resistant S. aureus,E. faecium, S. pyogenes and C. minutissimum. A cytotoxicity study was also performed on human fibroblasts. Results: The silver release showed an exponential curve with a stable meseta phase after 3 hours, with levels of 0.22-0.24 mg/l. A reduction of 99.9% of all the gram-negatives was achieved at 3 hours. The reduction was greater than 99% at 2 hours in S. pyogenes and C. minutissimum, at 6 h in S. aureus and at 14 h in E. faecium. In an in vivo simulation model, these reductions were achieved in 6 hours in the gram negatives and 24 h inthe gram positives. The silver concentrations were no cytotoxic to human fibroblasts, with no differences being observed between the cells exposed to Ag+ and the controls(p = .7)Conclusion: V.A.C. Granufoam Silver1 releases bactericide concentrations of Ag+ that did not damage human fibroblasts. It appears to be a good alternative for the control and prevention of local infections (AU)


Assuntos
Humanos , Anti-Infecciosos/farmacocinética , Prata/uso terapêutico , Infecção dos Ferimentos/prevenção & controle , Absorventes Higiênicos , Citotoxinas/análise , Cicatrização , Técnicas de Fechamento de Ferimentos/instrumentação
15.
Metas enferm ; 14(1): 18-25, feb. 2011. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-94476

RESUMO

En la última década del siglo XX se produjo un gran avance en el tratamiento del pie diabético en todos sus aspectos: prevención, tratamiento sistémico, abordaje multidisciplinario y nuevas formas de tratamiento local. La elección de un apósito adecuado es un factor muy importante en el manejo del pie diabético ulcerado y, aunque un apósito por sí solo no curará la úlcera en ausencia de otras medidas terapéuticas, la selección y el manejo correcto va a ser de gran ayuda,pudiendo tener efectos muy negativos en el pie afectado el uso inadecuado de un apósito. Tras los trabajos de Winter, Hinman yMaibach se ha reconocido que el medio húmedo es el óptimo para conseguir la cicatrización y, por tanto, el apósito a elegir para el tratamiento local de cualquier úlcera, incluidas las de pie diabético, ha de obedecer a esta premisa. Además, debe controlar el exudado para evitar la maceración de los tejidos periulcerosos, permitir el intercambio gaseoso, aislar térmicamente la herida, ser confortables parael paciente, permitir la descarga de la úlcera, aliviar o no empeorar el dolor, ser un adyuvante en el tratamiento de la infección, permitiruna retirada atraumática del mismo para no dañar los tejidos de granulación y piel perilesional y ser coste-efectivo. Según la experiencia acumulada todas estas características se pueden encontrar en el apósito Mepilex Ag® con tecnología exclusiva Safetac® (AU)


In the last decade of the XX century, great advances were made in the treatment of diabetic foot in all areas: prevention, systemic treatment,multidisciplinary approach and new forms of local treatment. The selection of a suitable dressing is a very important factor for the management of diabetic foot ulcers and even though a dressing on it sown will not cure the laceration in the absence of other therapeutic measures, the selection and correct management of the type of dressing is of outmost importance, with very negative effects on the affected foot if a non-suitable dressing is used. Following the studies by Winter, Hinman and Maibach, a moist wound environment has been accepted as the optimal environment to achieve cicatrisation and healing of the wound and thus the dressing to be chosen for the localtreatment of any ulcer, including diabetic foot ulcers, must take thispremise into account. Furthermore, the dressing must allow control of the exudate to avoid maceration of periulcer tissues allowing the exchange of gases, isolating the wound, being comfortable for the patient,allowing the ulcer to exudate, and to alleviate and not worsen the pain. It must also be an adjuvant to the treatment of the infection,by being easily removable in order not to damage granulation tissuesand perilesional skin, apart from also being cost-effective. Based on theaccumulated experience, the Mepilex Ag® dressing with exclusive technology Safetac® meets all of these requirements (AU)


Assuntos
Humanos , Pé Diabético/enfermagem , Fita Cirúrgica , Prata/uso terapêutico , Úlcera Cutânea/enfermagem , Curativos Oclusivos , Cicatrização , Absorventes Higiênicos
16.
Rev. Rol enferm ; 33(11): 726-735, nov. 2010. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-82477

RESUMO

Las úlceras y heridas crónicas constituyen un medio ideal para el crecimiento bacteriano. Éste se produce tanto en número como en variedad de especies, lo que da lugar a lesiones con flora polimicrobiana. La utilización de tratamientos antimicrobianos para el control y/o prevención de la infección está en debate. Los apósitos de plata se presentan como una alternativa segura y efectiva para el tratamiento de las heridas infectadas y/o en situación de colonización crítica. Actualmente ya existen evidencias sobre qué tipo de apósitos con plata son más coste/efectivos. El objetivo del presente estudio es evaluar la eficacia y efectividad de los apósitos Atrauman® Ag en el tratamiento de lesiones de piel agudas y crónicas, en cuanto a la resolución de los signos de infección y la progresión de la cicatrización durante un periodo de cuatro semanas. Material y método: se realizó un estudio observacional, abierto prospectivo y multicéntrico, donde el periodo de inclusión de pacientes abarcó desde abril hasta agosto del 2007. La muestra está conformada por sujetos, que daban su consentimiento informado, atendidos en centros de atención primaria, centros sociosanitarios y hospitales del todo el territorio nacional y cumplían los criterios de inclusión y no presentaban ninguno de los de exclusión. Las variables a estudio recogidas han sido sociodemográficas, relacionadas con las lesiones a estudio, con el apósito, y con las valoraciones de los profesionales y de los pacientes. Los valores de cada variable se recogían semanalmente en un CRD (Cuadreno de Recogida de Datos). Los datos registrados se procesaron en una base compuesta inicialmente por 116 variables, que fueron analizadas con el programa estadístico SPSS. Resultados: se evaluaron 219 pacientes; finalmente, se incluyeron 147 que cumplían los criterios de inclusión y ninguno de exclusión. Al final del estudio las lesiones crónicas presentaron tejido de granulación en un 84,8% y las heridas agudas el 100% con diferencias estadísticamente significativas con respecto a la valoración inicial. Los niveles de exudado en las heridas evaluadas a las cuatro semanas de tratamiento muestran una reducción importante, pasando de abundante o muy abundante en un 81,8%, a escaso o moderado en un 80,5% de los casos al finalizar el estudio. Los signos clínicos de infección en un 81% (n=91) de las lesiones desaparecieron a las cuatro semanas. Un 11,7 % de las lesiones cicatrizó en el periodo de estudio. En el caso de las heridas crónicas, se ha pasado de una mediana de 17,5 cm2 a 9,9 cm2; esto supone una reducción relativa del 39,05% y una velocidad de cicatrización de 1,12 cm2/semana. En el caso de las heridas agudas, se pasa de una mediana de 8,25 cm2 a 3,0 cm2, una reducción relativa del 65,03% con una velocidad de cicatrización de 2,28 cm2/semana, observándose diferencias estadísticamente significativas en ambos casos. La permeabilidad del apósito al exudado se ha evaluado como buena o muy buena en el 88% de los casos; y el cuidado de la piel perilesional, en un 79,9%, como bueno o muy bueno. El dolor en las heridas se ha valorado como nada o muy poco, en el 72% de los casos(AU)


Ulcers and chronic wounds are an ideal medium for bacterial growth. This growth occurs in both number and variety of species, resulting in lesions with polymicrobial flora. The use of antimicrobial treatments to control and / or prevention of infection is discussed. Silver dressings as an alternative safe and effective for treating infected wounds and / or in situations of critical colonization. There are already evidence of what kind of silver-containing dressings are more cost-effective. The aim of this study is to evaluate the efficacy and effectiveness of Atrauman® Ag dressing in the treatment of skin lesions in acute and chronic, as to the resolution of signs of infection and progression of healing during a period of four weeks. Material and methods: we performed an observational, prospective, multicenter open study, where the patient inclusion period was from April to August 2007. The sample consisted of patients seen giving their informed consent in primary care centers, health centers and hospitals throughout the country and met the inclusion criteria and had none of the exclusion criteria. The study variables were collected sociodemographic, injury-related variables to study, with the dressing and the ratings of professionals and patients. The values of each variable were collected weekly in a CRD. The recorded data are processed in a database originally composed of 116 variables, which were analyzed with SPSS software. Results: we evaluated 219 patients finally included 147 who met the inclusion criteria and no exclusion. At the end of the study had chronic injuries granulation tissue in 84.8% and 100% acute wounds with statistically significant differences with respect to the initial assessment. Exudate levels in wounds evaluated at 4 weeks of treatment show a significant reduction, from exudate abundant or very abundant in 81.8% to a level of low or moderate exudate in 80.5% of the cases end of the study. The evolution of clinical signs of infection by 81% (n=91) of the lesions disappeared after 4 weeks. 11.7% of lesions were healed in the study period. In the case of chronic wounds, we go from a median of 17.5 cm2 to 9.9 cm2, this means a relative reduction of 39.05% and a speed of 1.12 cm2/semana healing. In the case of acute wounds, a move from a median of 8.25 cm2 to 3.0 cm2 and a relative reduction of 65.03% with a healing rate of 2.28 cm2/semana, with statistically significant differences both cases. The permeability of the dressing exudate was evaluated as good or very good in 88% of cases and the perilesional skin care by 79.9% as good or very good. The pain in the wounds was evaluated as nothing or very little, in 72% of cases(AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Bandagens/tendências , Bandagens , Cicatrização , Ferimentos e Lesões/enfermagem , Ferimentos e Lesões/terapia , Anti-Infecciosos/uso terapêutico , Bandagens/classificação , Eficácia/métodos , Resultado do Tratamento , Sinais e Sintomas , Estudos Prospectivos , Prata , Nitrato de Prata/uso terapêutico
17.
Peu ; 30(3): 120-128, jul.-sept. 2010. ilus
Artigo em Espanhol | IBECS | ID: ibc-83782

RESUMO

A menudo es el podólogo quien debe enfrentarse a lesiones que se cronifican y que, en ocasiones, se asocian a afecciones de origen metabólico como la diabetes mellitus; desempeñando un importante papel para prevenir algunas de sus complicaciones. A pesar de ello, una vez que la lesión aparece, conseguir su cicatrización supone un reto complicado. El objetivo principal del presente artículo es aportar una perspectiva de abordaje local basado en la adecuada valoración y preparación de las características del lecho de la herida puesto que, independientemente del origen y etiología, su aspecto y características son de gran utilidad para la planificación de la estrategia terapéutica a seguir. A este respecto, el “concepto TIME” posibilita la correcta preparación del lecho de la herida mediante el empleo de productos de cura en ambiente húmedo que contribuyen a eliminar las barreras que dificultan el proceso natural de cicatrización(AU)


It is often the podiatrist the one who deals with chronic wounds as sometimes they appear associated to metabolic changes like diabetes mellitus. The podiatrist also plays an important role helping to prevent some of their common complications. Despite of that, once the wound shows up the process of healing is really a hard job. The main objective of the present article is to provide a current local strategy of treatment based on the characteristics of the wound bed because apart from wound’s origin and etiology its aspect and characteristics are useful to plan accurate treatment. According to it, the “TIME concept” allows accurate wound bed preparation by using moisture environment products that contribute to remove barriers interfering natural healing process(AU)


Assuntos
Humanos , Masculino , Feminino , Cicatrização , Infecção dos Ferimentos/terapia , Ferimentos e Lesões/terapia , Podiatria/métodos , Bandagens , Cicatriz Hipertrófica/terapia , Úlcera do Pé/terapia , Prata/uso terapêutico , Alginatos/uso terapêutico , Curativos Hidrocoloides , Cicatriz/terapia , Bandagens/tendências , Lesão por Pressão/terapia , Úlcera Cutânea/terapia , Úlcera/terapia , Anti-Infecciosos Locais/uso terapêutico , Curativos Hidrocoloides/tendências
18.
Rev. Rol enferm ; 32(1): 8-12, ene. 2009. graf
Artigo em Espanhol | IBECS | ID: ibc-76103

RESUMO

La colonización bacteriana sin signos clínicos de infección ha sido establecida como causa del retraso en la cicatrización de las úlceras de pie diabético: por tanto, será necesario, entre otros muchos factores, controlar la carga bacteriana. Una forma de realizar este control consiste en aplicar localmente mallas biocidas. Para evaluar su seguridad y su eficacia se han recogido datos de una muestra de pacientes ulcerados, con cultivo microbiológico positivo, que no presenten complicaciones añadidas: osteomielitis, infección severa de partes blandas, infección necrosante e isquemia, y cuyo tratamiento local durante los 15 días posteriores al cultivo positivo de la lesión consistiera en la aplicación de dichas mallas biocidas. Se incluye un total de 68 pacientes(AU)


Bacterial colonization without clinical signs of infection has been established as a cause in the delay of the cicatrisation process of diabetic foot ulcers; therefore, among other factors, it is necessary to control the bacterial amount present. One method to carry out this control consists in applying local biocide dressings. To evaluate its safety and effectiveness, the authors have gathered data from a sample of patients suffering from ulcers which have a positive microbiological culture but do not show any complementary complications such as osteomyelitis, severe infection in soft tissues, ischemic necrosis infection, and whose local treatment during 15 days following the positive culture taken at the lesion consisted of the application of the aforementioned biocide dressings. A total of 68 patients have been included in this sample(AU)


Assuntos
Humanos , Masculino , Feminino , Telas Cirúrgicas , Pé Diabético/terapia , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/enfermagem , Infecção da Ferida Cirúrgica/complicações , Carbono/uso terapêutico , Prata/uso terapêutico
19.
Rev. Rol enferm ; 31(3): 202-210, mar. 2008. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-79041

RESUMO

En el caso de úlceras con colonización crítica, una correcta diagnosis y su adecuado tratamiento son vitales para conseguir la cicatrización, dado que la presencia de una posible infección imposibilitará la idónea evolución de la úlcera hacia la curación. Se presenta un estudio prospectivo y multicéntrico, en el que se incluyeron 375 pacientes y en los que se evaluó la evolución de las úlceras durante 12 semanas de tratamiento con Biatain Plata. La media del tamaño inicial de las úlceras era 30 cm2 ± 61. Se consiguió una reducción del área de la úlcera en valores relativos del 80% después de 12 semanas de tratamiento. El 33% de las úlceras cicatrizó completamente, mientras que un 47,4% de ellas experimentó una mejora notable. El producto estudiado ha demostrado una elevada eficacia en el tratamiento de úlceras crónicas con colonización crítica. En lo relativo a la seguridad del apósito, no se ha descrito ningún acontecimiento adverso relacionado con él, ni se ha visto toxicidad alguna asociada a la liberación de plata, a pesar de haberlo utilizado durante el periodo de 12 semanas. Del mismo modo, tampoco se han apreciado indicios del posible desarrollo de resistencias bacterianas a su acción bactericida(AU)


In the event of ulcers with critical colonization, a correct diagnosis and adequate treatment are vital for healing to occur since the presence of a possible infection would impede an adequate evolution leading to healing the ulcer. The authors publish a prospective and multi-centric study which included 375 patients who were evaluated regarding the healing of their ulcers over a 12 week period in which the "Biatain Plata" dressing was used. The average initial size of their ulcers was 30 cm2 ± 61. After 12 weeks of treatment, patients' ulcers were reduced by 80% in relative value. 33% of these ulcers showed a complete healing, while another 47.4% evidenced a noticeable improvement. The product studied proved to be highly effective in the treatment of chronic ulcers with critical colonization. Regarding the safety of this dressing, the authors did not observe any adverse reaction to it, nor did they observe any toxicity associated with the release of silver, in spite of having used this dressing over12 weeks. In the same way, the authors did not notice any indications of possible development of bacterial resistance to the dressing's anti-bacterial action(AU)


Assuntos
Humanos , Úlcera Cutânea/tratamento farmacológico , Infecção dos Ferimentos/tratamento farmacológico , Prata/uso terapêutico , Cicatrização , Estudos Prospectivos , Estudos Multicêntricos como Assunto
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