RESUMO
Objetivo: Investigar os fatores de risco intrínsecos para queda entre idosos de duas Instituições de Longa Permanência (ILP) no interior de Minas Gerais/Brasil. Métodos: Foram avaliados 20 idosos com idade média de 79 anos (entre 60-100 anos). Foram aplicadas as escalas de Tinetti e Barthel para avaliação do equilíbrio corporal e independência funcional, respectivamente. A escala de Downton para análise do risco de quedas; a estesiometria, a dinamometria e o teste manual de força muscular para estimar respectivamente, a sensibilidade das mãos e pés, a força de preensão palmar e a força dos músculos de membros inferiores. A análise estatística utilizada foi o teste t-student, o teste de correlação de Pearson, a análise de variância (ANOVA-one way), considerando nível de significância de 5%. Resultados: A média geral do escore da escala de Dowton foi de 4,68 (p<0,05); a do equilíbrio corporal foi de 14,57 pontos (p<0,05), a escala de Barthel foi de 72,36 pontos (p<0,05); a força de preensão palmar foi de 2,73 kg/m² (±3,64) e a média de força em membros inferiores foi de 3,7 kg/m2 (p<0,05). Conclusão: Conclui-se que os idosos avaliados apresentam alto risco de quedas sendo os parâmetros mais comprometidos e responsáveis por este risco, a polifarmácia, desequilíbrio, fraqueza muscular, perda de sensibilidade e dependência funcional.
Objective: The objective of the study is to investigate the intrinsic risk factors for falls among elderly people from two Long Stay Institutions (ILP) in the countryside of Minas Gerais/Brazil. Methods: Twenty elderly people with a mean age of 79 years (between 60-100 years) were evaluated. Tinetti and Barthel scales were applied to assess body balance and functional independence, respectively. The Downton scale for the analysis of the risk of falls; esthesiometry, dynamometry and manual muscle strength test to estimate, respectively, the sensitivity of the hands and feet, the hand grip strength and the strength of the muscles of the lower limbs. The statistical analysis used was the t-student test, Pearson's correlation test, analysis of variance (ANOVA-one way), considering a significance level of 5%. Results: The general mean score on the Dowton scale was 4.68 (p<0.05); that of body balance was 14.57 points (p<0.05), the Barthel scale was 72.36 points (p<0.05); the handgrip strength was 2.73 kg/m² (±3.64) and the mean strength in the lower limbs was 3.7 kg/m2 (p<0.05). Conclusion: It is concluded that the evaluated elderly have a high risk of falls and the parameters most compromised and responsible for this risk are polypharmacy, imbalance, muscle weakness, loss of sensitivity and functional dependence.
RESUMO
Terephthalic acid (TPA) is a worldwide aromatic compound widely used to manufacture resins and the raw material for the polymerization reaction with ethylene glycol to produce polyethylene terephthalate, known as PET. The use of TPA extends to the synthesis of phthalates, plasticizers used in various industrialized products such as toys and cosmetics. The present study aimed to evaluate the testicular toxicity of terephthalic acid on male mice exposed in utero and during lactation to TPA in different developmental windows. The animals were treated intragastric with TPA at stock dispersal dosages corresponding to 0.0014 g/ml and 0.56 g/ml of TPA in 0.5% v/v carboxymethylcellulose as well as the control dose, composed solely of dispersion of carboxymethylcellulose (0.5% v/v). Four experimental windows were established: group I-treatment in utero, in the fetal period (gestational day-GD 10.5-18.5), with euthanasia at GD 18.5; group II-treatment in utero, in the fetal period (GD 10.5-18.5) and the lactational period (postnatal day (PND-15)), with euthanasia at 15 days; group III-treatment in utero in the fetal period (DG 10.5-18.5) with euthanasia at 70 days (age of sexual maturity, PND 70); group IV-treatment in utero, in the fetal period (GD 10.5-18.5) and the lactational period (PND-15), with euthanasia at 70 days (PND70). The results indicate that TPA changes the reproductive parameters (testicular weight, GI, penis size, and anogenital index) only at the dose of 0.56 g/ml in the fetal period. Data on the volumetric ratio of the testis elements show that the dispersion with the highest concentration of TPA significantly altered the blood vessel/capillary, lymphatic vessel, and connective tissue percentages. Only at the dose of 0.56 g/ml TPA was it effective in decreasing the Leydig and Sertoli cell numbers of the euthanized animals at GD 18.5. In group II, TPA increased the diameter and lumen of seminiferous tubules, which indicates that TPA accelerated the maturation process of Sertoli cells without changing the number and the nuclear volume of these cells. The Sertoli and Leydig cell numbers of the 70-day animals exposed to TPA in the gestational and lactational period were similar to the control. Therefore, the present study is the first in the literature to show that TPA presents a testicular toxicity during fetal (DG18.5) and postnatal life (PND15), without repercussion in adulthood (70 days).
Assuntos
Efeitos Tardios da Exposição Pré-Natal , Testículo , Feminino , Camundongos , Masculino , Animais , Humanos , Carboximetilcelulose Sódica , Células Intersticiais do Testículo , LactaçãoRESUMO
This case report describes tecovirimat treatment for a patient with monkeypox virusrelated keratouveitis.
Assuntos
Antivirais , Monkeypox virus , Mpox , Uveíte , Humanos , Uveíte/tratamento farmacológico , Uveíte/etiologia , Mpox/complicações , Mpox/tratamento farmacológico , Antivirais/uso terapêuticoRESUMO
A dentina e o osso alveolar apresentam muita semelhança em sua composição. Sendo assim, podemos considerar a utilização da dentina como recurso alternativo nas intervenções que buscam a regeneração tecidual óssea. Objetivo: o presente estudo realizou uma revisão integrativa da literatura sobre o uso da dentina como biomaterial para regeneração óssea. Metodologia: foi realizada uma busca por artigos, nas bases de dados Medline, via PubMed; Scielo, LILACS, BASE, Scopus e Science Direct, queavaliassem ou descrevessem o uso da dentina como biomaterial para regeneração óssea. Foram utilizados os seguintes descritores: "Dentin" AND "Bone Regeneration", sem delimitação de tempo. Os critérios de inclusão foram: estudos clínicos publicados em periódicos, oriundos de dados primários, sobre o uso de dentina como biomaterial. Os critérios de exclusão foram: revisões de literatura, estudos in vitro e em animais, estudos que não fosse possível o acesso na íntegra e estudos que associassem o uso da dentina com outros biomateriais sem que fosse possível relacionar os resultados apenas pelo uso da dentina. Resultados: vinte e três estudos foram selecionados para a presente revisão. As pesquisas demonstraram que há uma heterogenicidade relacionada ao tamanho da partícula de dentina obtida, que pode ser decorrente de diferentes métodos de processamento. Conclusão: a reutilização da dentina como biomaterial pode ser uma alternativa promissora ao enxerto autógeno. Sugere-se, então, que protocolos de processamento da partícula de dentina sejam melhor estabelecidos e estudos longitudinais precisam ser realizados para a garantia de procedimentos seguros, eficazes e práticos.
The dentin and the alveolar bone are very similar in composition, therefore, it's usage as an alternative resource in interventions that seek tissue regeneration can be considered. Objective: the aim of the present study was to carry out an integrative review of the literature on the use of dentin as a biomaterial for bone regeneration. Methodology: a search for articles was carried out in the Medline databases, via PubMed; Scielo, LILACS, BASE, Scopus and Science Direct, which evaluated or described the use of dentin as a biomaterial for bone regeneration. The following descriptors were used: "Dentin" AND "Bone Regeneration", without time limits. The inclusion criteria were: clinical studies published in journals, derived from primary data, on the use of dentin as a biomaterial. Exclusion criteria were: literature reviews, in vitro and in animal studies, studies that were not possible to be accessed in full and studies that associated the usage of dentin with other biomaterials and that it was not possible to relate the results just by using the dentin. Results: twenty-three studies were selected for the present review. Researches have shown that there is heterogeneity related to the size of the obtained dentin particle, which may be due to different processing methods. Conclusion: the reuse of dentin as a biomaterial can be a promising alternative to autogenous graft. It is suggested, then, that dentin particle processing protocols should are better established and longitudinal studies need to be carried out to the in order to ensure safe, effective and practical procedures.
Assuntos
Humanos , Animais , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Transplante Autólogo , Materiais Biocompatíveis , Regeneração Óssea , DentinaRESUMO
Introdução: Se faz necessária a identificação de estratégias de enfrentamento (coping) utilizadas pelos profissionais de enfermagem em âmbito de pandemias, visto que a mesma amplia a vulnerabilidade desses profissionais. Objetivo: Identificar e descrever as estratégias de enfrentamento utilizadas pela equipe de enfermagem durante a pandemia de COVID-19 no Brasil. Método: Trata-se de uma revisão integrativa da literatura, na qual foram utilizadas as bases de dados Biblioteca Virtual da Saúde, LILACS, SciELO e BDENF para a seleção dos artigos científicos disponíveis, sendo utilizado para combinação das palavras-chave os operadores booleanos AND e OR. Incluíram-se artigos disponíveis na íntegra de forma completa e on-line, publicados no idioma Português do Brasil no período entre março de 2020 a março de 2021. Resultados: A amostra deste estudo foi constituída por 12 artigos científicos, sendo elaboradas três categorias temáticas: "Estratégias de enfrentamento (coping) individuais", como a realização de atividades para mente e corpo, realização de auriculoterapia, utilização da espiritualidade e religiosidade e comunicação efetiva e fontes seguras; "Estratégias de enfrentamento (coping) organizacional", entre elas, condições de trabalho e funcionamentos organizacionais adequados, comunicação efetiva e bom relacionamento com a equipe, líderes e gestores e "Estratégias de enfrentamento (coping) de suporte social", como o diálogo e apoio de colegas, amigos e familiares. Conclusão: Considera-se que a busca consciente por soluções frente aos problemas, favorece a tomada de decisão e os processos de enfrentamento efetivos e adequados, melhorando a assistência prestada aos usuários, a qualidade de vida dos trabalhadores e a satisfação profissional.(AU)
Introduction: It is necessary to identify coping strategies (coping) used by nursing professionals in pandemics, since it increases the vulnerability of these professionals. Objective: To identify and describe the coping strategies used by the nursing team during the COVID-19 pandemic in Brazil. Method: This is an integrative review of the literature, in which the databases Biblioteca Virtual da Saúde, LILACS, SciELO and BDENF were used for the selection of available scientific articles, being used for the combination of words-key the boolean operators AND and OR. Articles were available in full and online, published in the Portuguese language of Brazil in the period between March 2020 to March 2021. Results: The sample of this study was constituted by 12 scientific articles, being elaborated three thematic categories: "Coping strategies (coping) individual", as the accomplishment of activities for mind and body, realization of auriculotherapy, use of spirituality and religiosity and effective communication and reliable sources; "Organizational coping (coping) strategies", among them, adequate working conditions and organizational functions, effective communication and good relationship with the team, leaders and managers and "Coping strategies (coping) of social support", such as dialogue and support from colleagues, friends and family. Conclusion: It is considered that the conscious search for solutions to the problems, favors the decision-making and the effective and adequate coping processes, improving the care provided to users, the quality of life of workers and professional satisfaction.(AU)
Introducción: Se hace necesaria la identificación de las estrategias de afrontamiento (coping) utilizadas por los profesionales de la enfermería en el ámbito de las pandemias, dado que la misma amplía la vulnerabilidad de estos profesionales. Objetivo: Identificar y describir las estrategias de afrontamiento utilizadas por el equipo de enfermería durante la pandemia de COVID-19 en Brasil. Método: Se trata de una revisión bibliográfica integradora, en la que se utilizaron las bases de datos Biblioteca Virtual de Salud, LILACS, SciELO y BDENF para la selección de los artículos científicos disponibles, utilizando los operadores booleanos AND y OR para combinar las palabras clave. Se incluyeron los artículos disponibles en su totalidad y en línea, publicados en el idioma portugués de Brasil en el período comprendido entre marzo de 2020 y marzo de 2021. Resultados: La muestra de este estudio consistió en 12 artículos científicos, y se elaboraron tres categorías temáticas: "Estrategias de afrontamiento individuales", como la realización de actividades para la mente y el cuerpo, la realización de auriculoterapia, el uso de la espiritualidad y la religiosidad y la comunicación efectiva y las fuentes seguras; "Estrategias de afrontamiento organizativas", entre ellas, las condiciones de trabajo adecuadas y el funcionamiento organizativo, la comunicación efectiva y la buena relación con el equipo, los líderes y los directivos y "Estrategias de afrontamiento de apoyo social", como el diálogo y el apoyo de los compañeros, los amigos y la familia. Conclusión: Se considera que la búsqueda consciente de soluciones frente a los problemas, favorece la toma de decisiones y los procesos de enfrentamiento eficaces y adecuados, mejorando la asistencia prestada a los usuarios, la calidad de vida de los trabajadores y la satisfacción profesional.(AU)
Assuntos
Humanos , Adaptação Psicológica , Saúde Mental , COVID-19 , Equipe de Enfermagem , Riscos Ocupacionais , Saúde Ocupacional , Estratégias de Saúde , Vulnerabilidade a Desastres/prevenção & controle , PandemiasRESUMO
PURPOSE: To compare neonatal eye screening using the red reflex test (RRT) versus the wide-field digital imaging (WFDI) system. METHODS: Prospective cohort study. Newborns (n = 380, 760 eyes) in the Maternity Ward of Irmandade Santa Casa de Misericórdia de São Paulo hospital from May to July 2014 underwent RRT by a paediatrician and WFDI performed by the authors. Wide-field digital imaging (WFDI) images were analysed by the authors. Validity of the paediatrician's RRT was assessed by unweighted kappa [κ] statistic, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). RESULTS: While WFDI showed abnormalities in 130 eyes (17.1%), RRT was only abnormal in 13 eyes (1.7%). Wide-field digital imaging (WFDI) detected treatable retina pathology that RRT missed including hyphema, CMV retinitis, FEVR and a vitreous haemorrhage. The sensitivity of the paediatrician's RRT to detect abnormalities was poor at 0.77% (95% confidence interval, CI, 0.02%-4.21%) with a PPV of only 7.69% (95% CI, 1.08%-38.85%). Overall, there was no agreement between screening modalities (κ = -0.02, 95% CI, -0.05 to 0.01). The number needed to screen to detect ocular abnormalities using WFDI was 5.9 newborns and to detect treatable abnormalities was 76 newborns. CONCLUSION: While RRT detects gross abnormalities that preclude visualization of the retina (i.e. media opacities and very large tumours), only WFDI consistently detects subtle treatable retina and optic nerve pathology. With a higher sensitivity than the current gold standard, universal WFDI allows for early detection and management of potentially blinding ophthalmic disease missed by RRT.
Assuntos
Oftalmopatias/diagnóstico , Triagem Neonatal/métodos , Nervo Óptico/diagnóstico por imagem , Reflexo/fisiologia , Retina/diagnóstico por imagem , Brasil/epidemiologia , Oftalmopatias/epidemiologia , Feminino , Seguimentos , Humanos , Incidência , Recém-Nascido , Masculino , Oftalmoscopia/métodos , Nervo Óptico/fisiopatologia , Valor Preditivo dos Testes , Estudos Prospectivos , Retina/fisiopatologiaRESUMO
Chemotherapy for cancer treatment may result in a temporary or long-term gonadal damage resulting in subfertility or infertility. Cyclophosphamide (CY) is a cytotoxic alkylating agent that has been widely used in the treatment of cancer. Recent studies have shown that synthetic resorcinol lipid AMS35AA (3-Heptyl-3,4,6-trimethoxy-3H-isobenzofuran-1-one) may be an important adjuvant chemotherapy that potentiates mutagenic damage and increases apoptosis caused by CY. The present study investigates the action of AMS35AA alone or/in association with CY on testicular function. Animals were divided into four groups: (a) control group: received only water; (b) CY group: received 150 µg/g of CY b.w., i.p.; (c) AMS35AA group: received 10 µg/g of AMS35AA b.w., i.p; and (d) associated group: received 10 µg/g of AMS35AA + 150 µg/g of CY b.w., i.p. Four weeks after the treatment, the results showed that testes weight of CY and associated groups decreased. However, the number of Sertoli cell and Leydig cell per testis was similar in control and treated groups. Our findings provide strong evidence that the AMS35AA alone or in CY association is not toxic to spermatogenesis. The absence of toxicity of AMS35AA supports the view that the resorcinolic lipid could be used associated with CY chemotherapy without causing adverse effects to testes function.
Assuntos
Benzofuranos , Animais , Benzofuranos/toxicidade , Ciclofosfamida/toxicidade , Masculino , Espermatogênese , TestículoRESUMO
ABSTRACT Purpose: To compare the impact of ocular changes between systemic treatment with doxycycline and low-dose oral isotretinoin in patients with moderate-to-severe papulopustular rosacea. Methods: Patients were randomized to receive either isotretinoin 0.3-0.4 mg/kg (group A) or doxycycline 100 mg/day (group B) for 16 weeks. Ocular symptoms were searched and evaluated, including best-corrected visual acuity (BCVA), Schirmer test, breakup time, rose bengal staining score, and meibomian gland dysfunction grading. The patients were retested at the end of treatment. Results: The present study included 39 patients (30 females and 9 males). Best-corrected visual acuity was > 20/30 in >90% of patients in both groups and did not change after treatment. After treatment, improvement in ocular symptoms and meibomian gland dysfunction was more pronounced in group B (p<0.05); the other parameters did not reach statistical significance. Conclusion: Doxycycline improved meibomian gland dysfunction, ocular symptoms, and ocular surface in patients with rosacea. Even though some patients experienced worsening meibomian gland dysfunction and symptoms, no subject experienced any serious complications after administration of low-dose isotretinoin.
RESUMO Objetivos: Comparar o impacto das alterações oculares entre o tratamento sistêmico de doxiciclina e isotretinoína em baixa dosagem em pacientes com rosácea papulopustulosa moderada a grave. Métodos: Os pacientes form randomizados para receber isotretinoína 0,3 a 0,4 mg/kg (grupo A) ou doxiciclina 100mg/dia (grupo B) por 16 semanas. Os sintomas oculares foram pesquisados e avaliados, incluindo melhor acuidade visual corrigida, teste de Schirmer, tempo de ruptura do filme lacrimal, coloração de rosa bengala e graduação da disfunção de glândula de Meibomius. Os pacientes foram novamente testados no final do tratamento. Resultados: O presente estudo incluiu 39 pacientes (30 mulheres e 9 homens). A melhor acuidade visual corrigida foi >20/30 em >90% dos pacientes em ambos os grupos e não se alterou após o tratamento. A melhora dos sintomas oculares e da disfunção de glândula de Meibomius foi mais pronunciada no grupo B (p<0,05) após o tratamento; as demais variáveis não atingiram significância estatística. Conclusão: A doxiciclina melhorou a disfunção de glândula de Meibomius, os sintomas oculares e a superfície ocular de pa cientes com rosácea. Mesmo que alguns pacientes tenham piorado a disfunção e os sintomas da glândula de Meibomius, nenhum indivíduo apresentou complicações graves após a admi nistração de baixas doses de isotretinoína.
Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Adulto Jovem , Isotretinoína/administração & dosagem , Doxiciclina/administração & dosagem , Rosácea/tratamento farmacológico , Fármacos Dermatológicos/administração & dosagem , Disfunção da Glândula Tarsal/tratamento farmacológico , Antibacterianos/administração & dosagem , Índice de Gravidade de Doença , Acuidade Visual , Administração Oral , Resultado do Tratamento , Rosácea/fisiopatologia , Olho/efeitos dos fármacos , Disfunção da Glândula Tarsal/fisiopatologia , Glândulas Tarsais/efeitos dos fármacosRESUMO
PURPOSE: To compare the impact of ocular changes between systemic treatment with doxycycline and low-dose oral isotretinoin in patients with moderate-to-severe papulopustular rosacea. METHODS: Patients were randomized to receive either isotretinoin 0.3-0.4 mg/kg (group A) or doxycycline 100 mg/day (group B) for 16 weeks. Ocular symptoms were searched and evaluated, including best-corrected visual acuity (BCVA), Schirmer test, breakup time, rose bengal staining score, and meibomian gland dysfunction grading. The patients were retested at the end of treatment. RESULTS: The present study included 39 patients (30 females and 9 males). Best-corrected visual acuity was > 20/30 in >90% of patients in both groups and did not change after treatment. After treatment, improvement in ocular symptoms and meibomian gland dysfunction was more pronounced in group B (p<0.05); the other parameters did not reach statistical significance. CONCLUSION: Doxycycline improved meibomian gland dysfunction, ocular symptoms, and ocular surface in patients with rosacea. Even though some patients experienced worsening meibomian gland dysfunction and symptoms, no subject experienced any serious complications after administration of low-dose isotretinoin.
Assuntos
Antibacterianos/administração & dosagem , Fármacos Dermatológicos/administração & dosagem , Doxiciclina/administração & dosagem , Isotretinoína/administração & dosagem , Disfunção da Glândula Tarsal/tratamento farmacológico , Rosácea/tratamento farmacológico , Administração Oral , Adulto , Idoso , Olho/efeitos dos fármacos , Feminino , Humanos , Masculino , Disfunção da Glândula Tarsal/fisiopatologia , Glândulas Tarsais/efeitos dos fármacos , Pessoa de Meia-Idade , Rosácea/fisiopatologia , Índice de Gravidade de Doença , Resultado do Tratamento , Acuidade Visual , Adulto JovemRESUMO
RESUMO A imobilidade pode causar várias complicações que influenciam na recuperação de doentes críticos, incluindo atrofia e fraqueza muscular esquelética. Esse efeito pode ser amenizado com a realização de mobilização precoce. Seis questões primordiais nortearam essa pesquisa: É segura? Quem é o candidato à mobilização precoce? Quais são as contraindicações? Qual a dose adequada e como defini-la? Quais os resultados obtidos? Quais os indicadores prognósticos em sua utilização? O objetivo desta diretriz foi elaborar um documento que reunisse recomendações e sugestões baseadas em níveis de evidência sobre a mobilização precoce do paciente crítico adulto, visando melhorar o entendimento sobre o tema, com impacto positivo no atendimento aos pacientes. Esta diretriz foi desenvolvida com base em uma revisão sistemática de artigos, utilizando a estratégia de busca no modelo PICO, conforme recomendado pelo Projeto de Diretrizes da Associação Médica Brasileira. Foram selecionados ensaios clínicos randomizados, estudos de coortes prognósticos, revisões sistemáticas com ou sem metanálise, sendo as evidências classificadas segundo Oxford Centre for Evidence-based Medicine - Levels of Evidence. Em todas as questões abordadas, foram encontradas evidências suficientes para a realização da mobilização precoce de forma segura e bem definida, com indicadores prognósticos que evidenciam e recomendam a técnica. A mobilização precoce está associada a melhores resultados funcionais, devendo ser realizada sempre que indicada. É segura e deve ser meta de toda equipe multidisciplinar.
ABSTRACT Immobility can cause several complications, including skeletal muscle atrophy and weakness, that influence the recovery of critically ill patients. This effect can be mitigated by early mobilization. Six key questions guided this research: Is early mobilization safe? Which patients are candidates for early mobilization? What are the contraindications? What is the appropriate dose, and how should it be defined? What results are obtained? What are the prognostic indicators for the use of early mobilization? The objective of this guideline was to produce a document that would provide evidence-based recommendations and suggestions regarding the early mobilization of critically ill adult patients, with the aim of improving understanding of the topic and making a positive impact on patient care. This guideline was based on a systematic review of articles conducted using the PICO search strategy, as recommended by the Guidelines Project of the Associação Médica Brasileira. Randomized clinical trials, prognostic cohort studies, and systematic reviews with or without meta-analysis were selected, and the evidence was classified according to the Oxford Center for Evidence-based Medicine Levels of Evidence. For all the questions addressed, enough evidence was found to support safe and well-defined early mobilization, with prognostic indicators that support and recommend the technique. Early mobilization is associated with better functional outcomes and should be performed whenever indicated. Early mobilization is safe and should be the goal of the entire multidisciplinary team.
Assuntos
Humanos , Adulto , Guias de Prática Clínica como Assunto , Cuidados Críticos/métodos , Deambulação Precoce/métodos , Unidades de Terapia Intensiva , Brasil , Estado Terminal/terapia , Cuidados Críticos/normas , Deambulação Precoce/normasRESUMO
Pfaffia glomerata (Spreng.) Pedersen, popularly known as "Brazilian ginseng," is used as medicinal plant in Brazil to treat inflammatory diseases in general. Previous studies showed that its extract increases the nitric oxide (NO) levels. Knowing that NO downregulates steroidogenesis and that alterations in the action/production of androgens during perinatal life could alter testis development, the present studies sought to investigate the reproductive toxicity of Pfaffia glomerata on male mice exposed to hydroalcoholic extract in utero and during lactation. The present study shows that P. glomerata extract does not alter body weight, tubular diameter and testis function in male mice. Although a reduction in the testis weight was observed in the animals that received the highest dose directly in early post-natal life, our findings show clearly that P. glomerata may not act as an endocrine disruptor, and it is not an "antiandrogenic" compound that could lead to testicular dysgenesis syndrome.
Assuntos
Disgenesia Gonadal/diagnóstico , Panax/química , Extratos Vegetais/toxicidade , Efeitos Tardios da Exposição Pré-Natal/diagnóstico , Testículo/efeitos dos fármacos , Androgênios/biossíntese , Animais , Animais Lactentes , Peso Corporal/efeitos dos fármacos , Brasil , Modelos Animais de Doenças , Feminino , Disgenesia Gonadal/etiologia , Disgenesia Gonadal/patologia , Humanos , Lactação , Masculino , Exposição Materna/efeitos adversos , Camundongos , Óxido Nítrico/metabolismo , Tamanho do Órgão/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Extratos Vegetais/administração & dosagem , Raízes de Plantas/química , Gravidez , Efeitos Tardios da Exposição Pré-Natal/etiologia , Efeitos Tardios da Exposição Pré-Natal/patologia , Testículo/patologiaRESUMO
Immobility can cause several complications, including skeletal muscle atrophy and weakness, that influence the recovery of critically ill patients. This effect can be mitigated by early mobilization. Six key questions guided this research: Is early mobilization safe? Which patients are candidates for early mobilization? What are the contraindications? What is the appropriate dose, and how should it be defined? What results are obtained? What are the prognostic indicators for the use of early mobilization? The objective of this guideline was to produce a document that would provide evidence-based recommendations and suggestions regarding the early mobilization of critically ill adult patients, with the aim of improving understanding of the topic and making a positive impact on patient care. This guideline was based on a systematic review of articles conducted using the PICO search strategy, as recommended by the Guidelines Project of the Associação Médica Brasileira. Randomized clinical trials, prognostic cohort studies, and systematic reviews with or without meta-analysis were selected, and the evidence was classified according to the Oxford Center for Evidence-based Medicine Levels of Evidence. For all the questions addressed, enough evidence was found to support safe and well-defined early mobilization, with prognostic indicators that support and recommend the technique. Early mobilization is associated with better functional outcomes and should be performed whenever indicated. Early mobilization is safe and should be the goal of the entire multidisciplinary team.
A imobilidade pode causar várias complicações que influenciam na recuperação de doentes críticos, incluindo atrofia e fraqueza muscular esquelética. Esse efeito pode ser amenizado com a realização de mobilização precoce. Seis questões primordiais nortearam essa pesquisa: É segura? Quem é o candidato à mobilização precoce? Quais são as contraindicações? Qual a dose adequada e como defini-la? Quais os resultados obtidos? Quais os indicadores prognósticos em sua utilização? O objetivo desta diretriz foi elaborar um documento que reunisse recomendações e sugestões baseadas em níveis de evidência sobre a mobilização precoce do paciente crítico adulto, visando melhorar o entendimento sobre o tema, com impacto positivo no atendimento aos pacientes. Esta diretriz foi desenvolvida com base em uma revisão sistemática de artigos, utilizando a estratégia de busca no modelo PICO, conforme recomendado pelo Projeto de Diretrizes da Associação Médica Brasileira. Foram selecionados ensaios clínicos randomizados, estudos de coortes prognósticos, revisões sistemáticas com ou sem metanálise, sendo as evidências classificadas segundo Oxford Centre for Evidence-based Medicine - Levels of Evidence. Em todas as questões abordadas, foram encontradas evidências suficientes para a realização da mobilização precoce de forma segura e bem definida, com indicadores prognósticos que evidenciam e recomendam a técnica. A mobilização precoce está associada a melhores resultados funcionais, devendo ser realizada sempre que indicada. É segura e deve ser meta de toda equipe multidisciplinar.
Assuntos
Cuidados Críticos/métodos , Deambulação Precoce/métodos , Unidades de Terapia Intensiva , Guias de Prática Clínica como Assunto , Adulto , Brasil , Cuidados Críticos/normas , Estado Terminal/terapia , Deambulação Precoce/normas , HumanosRESUMO
PURPOSE: To report a case of nocardial scleritis and to propose a logical treatment algorithm based on a literature review. OBSERVATIONS: It is important to suspect a nocardial infection when evaluating anterior unilateral scleritis accompanied by multiple purulent or necrotic abscesses, especially in male patients with a history of chronic ocular pain and redness, trauma inflicted by organic materials, or recent ophthalmic surgery. A microbiological investigation is essential. In positive cases, a direct smear reveals weakly acid-fast organisms or Gram-positive, thin, beading and branching filaments. Also, the organism (usually) grows on blood agar and Lowenstein-Jensen plates. An infection can generally be fully resolved by debridement of necrotic areas and application of topical amikacin drops accompanied by systemic sulfamethoxazole-trimethoprim. CONCLUSIONS AND SIGNIFICANCE: Together with the case report described, we review data on a total of 43 eyes with nocardial scleritis. Our proposed algorithm may afford a useful understanding of this sight-threatening disease, facilitating easier and faster diagnosis and management.
RESUMO
Dengue fever, chikungunya fever and Zika virus are epidemics in Brazil that are transmitted by mosquitoes, such as Aedes aegypti or Aedes albopictus. The liquid from shells of cashew nuts is attractive for its important biological and therapeutic activities, which include toxicity to mosquitoes of the genus Aedes. The present study evaluated the effects of a mixture of surfactants from natural cashew nutshell liquid and castor oil (named TaLCC-20) on the mortality of larvae and on the reproductive performance, embryonic and fetal development and genetic stability of Swiss mice. A total of 400 Ae. aegypti larvae (third larval stage) were treated with TaLCC-20 concentrations of 0.05 mg/L, 0.5 mg/L, or 5 mg/L (ppm). Twenty pregnant female mice were also orally administered TaLCC-20 at doses of 5 mg/kg and 50 mg/kg body weight (b.w.), and 10 animals were given only drinking water at 0.1 mL/10 g b.w. (orally). The results of a larvicide test demonstrated that 5 mg/mL TaLCC-20 killed 100% of larvae within three hours, which is comparable to the gold standard indicated by the Ministry of Health. Overall, these results show that TaLCC-20 is an efficient larvicide that does not induce genetic damage. In addition, changes in reproductive performance and embryo-fetal development appear positive, and the formulation is cost effective. Therefore, TaLCC-20 is an important product in the exploration of natural larvicides and can assist in fighting mosquitos as vectors for dengue fever, chikungunya fever and Zika virus, which are emerging/re-emerging and require proper management to ensure minimal harm to the human population. Therefore, TaLCC-20 can be considered a key alternative to commercial products, which are effective yet toxigenic.
Assuntos
Aedes , Anacardium/química , Óleo de Rícino/química , Inseticidas/química , Inseticidas/toxicidade , Larva , Nozes/química , Animais , DNA/genética , DNA/metabolismo , Desenvolvimento Embrionário/efeitos dos fármacos , Feminino , Desenvolvimento Fetal/efeitos dos fármacos , Larva/fisiologia , Masculino , Camundongos , Reprodução/efeitos dos fármacos , Tensoativos/químicaRESUMO
The Hymenaea stigonocarpa and Hymenaea martiana species, commonly known as "jatobá," produce a sap which is extracted by perforation of the trunk and is commonly used in folk medicine as a tonic. For this study, the authenticity of commercial samples of jatobá was verified by the identification of the main compounds and multivariate analysis and contamination by microbial presence analysis. The acute toxicity of the authentic jatobá sap was also evaluated. The metabolites composition and multivariate analysis revealed that none of the commercial samples were authentic. In the microbiological contamination analysis, five of the six commercial samples showed positive cultures within the range of 1,700-100,000 CFU/mL and the authentic sap produced no signs of toxicity, and from a histological point of view, there was the maintenance of tissue integrity. In brief, the commercial samples were deemed inappropriate for consumption and represent a danger to the population.
RESUMO
Cardanol is an effective antioxidant and is a compound with antimutagenic and antitumoral activity. Here, we evaluated the genotoxic and mutagenic potential of saturated side chain cardanol and its effects in combination with cyclophosphamide in preventing DNA damage, apoptosis, and immunomodulation. Swiss mice were treated with cardanol (2.5, 5 and 10 mg/kg) alone or in combination with cyclophosphamide (100 mg/kg). The results showed that cardanol is an effective chemopreventive compound, with damage reduction percentages that ranged from 18.9 to 31.76% in the comet assay and from 45 to 97% in the micronucleus assay. Moreover, cardanol has the ability to reduce the frequency of apoptosis induced by cyclophosphamide. The compound did not show immunomodulatory activity. A final interpretation of the data showed that, despite its chemoprotective capacity, cardanol has a tendency to induce DNA damage. Hence, caution is needed if this compound is used as a chemopreventive agent. Also, this compound is likely not suitable as an adjuvant in chemotherapy treatments that use cyclophosphamide.
RESUMO
Campomanesia adamantium (Cambess.) O. Berg. is originally from Brazil. Its leaves and fruits have medicinal properties such as anti-inflammatory, antidiarrheal and antiseptic properties. However, the mutagenic potential of this species has been reported in few studies. This study describes the mutagenic/antimutagenic, splenic phagocytic, and apoptotic activities of C. adamantium hydroethanolic extract with or without cyclophosphamide in Swiss mice. The animals orally received the hydroethanolic extract at doses of 30, 100, or 300 mg/kg with or without 100 mg/kg cyclophosphamide. Mutagenesis was evaluated by performing the micronucleus assay after treatment for 24, 48, and 72 h, while splenic phagocytic and apoptotic effects were investigated after 72 h. Short-term exposure of 30 and 100 mg/kg extract induced mild clastogenic/aneugenic effects and increased splenic phagocytosis and apoptosis in the liver, spleen, and kidneys. When the extract was administered in combination with cyclophosphamide, micronucleus frequency and apoptosis reduced. Extract components might affect cyclophosphamide metabolism, which possibly leads to increased clearance of this chemotherapeutic agent. C. adamantium showed mutagenic activity and it may decrease the effectiveness of drugs with metabolic pathways similar to those associated with cyclophosphamide. Thus, caution should be exercised while consuming these extracts, especially when received in combination with other drugs.
Assuntos
Apoptose , Dano ao DNA , Mutagênicos/toxicidade , Myrtaceae/química , Extratos Vegetais/toxicidade , Animais , Antineoplásicos/farmacologia , Ciclofosfamida/farmacologia , Camundongos , Fagocitose , Baço/efeitos dos fármacosRESUMO
CONTEXT: Annona crassiflora Mart. (Annonaceae) is a medicinal plant that is widely used in folk medicine, which leads to its investigation as a potential source of new pharmacological principles. OBJECTIVE: This study describes the anti-inflammatory, antiallodynic, and antimutagenic/chemopreventive activities of the leaves A. crassiflora methanolic extract. Its antimutagenic mode of action was analyzed in a plant or animal experimental model. MATERIALS AND METHODS: Total flavonoids were quantified by spectrophotometry at 415 nm and its composition was analyzed by (1)H NMR spectra. Animals received orally, 30, 100, and 300 mg/kg of extract in both tests, carrageenan-induced paw edema and myeloperoxidase activity. Animals were treated with 100 and 300 mg/kg, in all the analyzed tests, pleural cell migration and protein exudation, carrageenan-induced cell migration into the pouch, induction of joint inflammation and carrageenan-induced allodynia response in the mouse paw. To evaluate the antimutagenic/chemopreventive activity through the Allium cepa test, we used 5, 10, and 15 mg/L of extract, and for the micronucleus test in the peripheral blood, we used the dose of 15 mg/kg. RESULTS: The fractionation of the ethyl acetate (EA) fraction, resulting from the partition of the methanol extract of the A. crassiflora, afforded through chromatographic methods resulted in the isolation of kaempferol 3-O-ß-glucoside and kaempferol 3-O-ß-diglucoside. Oral treatment with 100 and 300 mg/kg of extract significantly inhibited the carrageenan-induced edema formation, with inhibitions of 53 ± 7% and 47 ± 10%; in MPO activity, the observed inhibitions were 60 ± 7% for 100 mg/kg treatment and 63 ± 7% for 300 mg/kg. The ACME reduced significantly the total leukocytes (an inhibition of 78 ± 9% with 100 mg/kg and 90 ± 7% with 300 mg/kg) and protein levels (approximately 100% inhibition with both doses) in the pleurisy model. In carrageenan-induced leukocyte migration into the pouch, the extract inhibited leukocyte migration only when administered 300 mg/kg per dose (the reduction was 43 ± 5%). Pretreatment with extract failed to reduce the zymosan-induced edema formation and did not inhibit the carrageenan-induced mechanical allodynia. Damage reduction in Allium cepa tested with different concentrations (5, 10, and 15 mg/L) was 66.17, 75.75, and 69.19% for the pre-treatment; 72.72, 33.33, and 22.22% for the simple simultaneous treatment; 100.50, 93.93, and 102.52% for the simultaneous treatment with pre-incubation; 89.39, 79.79, and 84.34%; for the post-treatment, and 86.36, 81.31, and 93.43% for the continuous treatment. The antimutagenic evaluation in the micronucleous test showed a damage reduction of 75.00 and 64.58% for the pre-treatment and simultaneous protocols, respectively. The post-treatment protocol increased the cyclophosphamide effects in 45.83%. CONCLUSION: These results suggest that this medicinal plant has chemopreventive and anti-inflammatory therapeutic potential.
Assuntos
Analgésicos/farmacologia , Annona/química , Anti-Inflamatórios/farmacologia , Anticarcinógenos/farmacologia , Antimutagênicos/farmacologia , Hiperalgesia/prevenção & controle , Inflamação/prevenção & controle , Metanol/química , Micronúcleos com Defeito Cromossômico/efeitos dos fármacos , Extratos Vegetais/farmacologia , Solventes/química , Analgésicos/química , Analgésicos/isolamento & purificação , Animais , Anti-Inflamatórios/química , Anti-Inflamatórios/isolamento & purificação , Anticarcinógenos/química , Anticarcinógenos/isolamento & purificação , Antimutagênicos/química , Antimutagênicos/isolamento & purificação , Carragenina , Quimiotaxia de Leucócito/efeitos dos fármacos , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Feminino , Hiperalgesia/induzido quimicamente , Inflamação/induzido quimicamente , Inflamação/imunologia , Masculino , Camundongos , Testes para Micronúcleos , Fitoterapia , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Folhas de Planta , Plantas Medicinais , Espectroscopia de Prótons por Ressonância Magnética , Fatores de TempoRESUMO
BACKGROUND: A large number of studies are attempting to identify alternative products from natural sources or synthesized compounds that effectively interact with cancer cells without causing adverse effects on healthy cells. Resorcinolic lipids are a class of bioactive compounds that possess anticancer activity and are able to interact with the lipid bilayer. Therefore, the objective of this study was to synthesize a novel resorcinolic lipid and test its biological proprieties. METHODS: We aimed to synthesize a novel resorcinolic lipid belonging to the class of cytosporones, AMS049 (3-Heptyl-4,6-dihydroxy-3H-isobenzofuran-1-one) and to evaluate the toxicity of two concentrations of this lipid (7.5 and 10 mg/kg) by determining its genotoxic, mutagenic, immunomodulatory, and apoptotic effects, as well as any biochemical and histopathological alterations in mice treated with cyclophosphamide. The results were analyzed by ANOVA followed by the Tukey test A . level of significance of p < 0.05 was adopted. RESULTS: The new cytosporone AMS049 was synthesized in only three steps and in satisfactory yields. The results indicate that the compound is neither genotoxic nor mutagenic and does not alter biochemical parameters. The histological alterations observed in the liver and kidneys did not compromise the function of these organs. Histology of the spleen suggested immunomodulation, although no changes were observed in splenic phagocytosis or differential blood cell count. The results also show that AMS049 potentiates the mutagenic effect of the chemotherapy drug cyclophosphamide and that the combination induces apoptosis. CONCLUSION: These facts indicate a potential therapeutic application of this novel cytosporone as an important chemotherapeutic adjuvant.
Assuntos
Benzofuranos/administração & dosagem , Benzofuranos/síntese química , Ciclofosfamida/administração & dosagem , Fatores Imunológicos/administração & dosagem , Fatores Imunológicos/síntese química , Animais , Apoptose , Benzofuranos/farmacologia , Ciclofosfamida/farmacologia , Sinergismo Farmacológico , Fatores Imunológicos/farmacologia , Rim/efeitos dos fármacos , Rim/patologia , Fígado/efeitos dos fármacos , Fígado/patologia , Masculino , Camundongos , Baço/efeitos dos fármacosRESUMO
Inflammatory and genetic alterations are related to the development of chronic diseases such as cancer. Schinus terebinthifolius Raddi, Anacardiaceae, is used in folk medicine to treat inflammation, wounds and tumors. This study evaluated the anti-inflammatory, immunomodulatory, chemopreventive, and wound healing potentials of the methanolic extract from the leaves of Schinus terebinthifolius. The chemical composition of the extract was characterized using preliminary analytical LC methods. The results showed that the anti-inflammatory activity of the methanolic extract was similar to that of dexamethasone for edema reduction. Also, it inhibited the leukocyte migration into the air pouch and decreased plasma extravasation. In addition, the methanolic extract showed a healing action similar to that observed with collagenase. The methanolic extract is not genotoxic nor mutagenic, and in contrast it has chemopreventive activity, which elicits a high percentage of damage reduction by comet and micronucleus assay, preferably by bioantimutagenic action. The methanolic extract induced apoptosis and enhanced splenic phagocytosis in animals treated with cyclophosphamide. The methanolic extract contents, resolved by LC, include phenolic acid and flavonoids. Our results suggest a therapeutic potential for the methanolic extract.