Analysis of antimicrobial, antibiofilm, and healing activity of lipid nanocarriers based on Tucuman butter (Astrocaryum vulgare), fixed oils from microalgae chlorella Homosphaera and from UVA seed Vitis vinifera

Therapeutic alternatives of natural origin have been arousing the interest of large research centers that are looking for new bioactive molecules to treat numerous diseases in the context of public health. Among them, infectious diseases, which present antimicrobial resistance, deserve attention. The present study aimed to evaluate the antimicrobial activity of lipid nanocarriers (CLN), as well as the healing activity, arising from the association of tucumã butter with grape seed oil and another one containing microalgae oil. Two formulations were prepared using the high-speed homogenization technique, which was evaluated for antimicrobial action for 10 strains of great clinical importance, including a multiresistant and healing activity. The formulation with Chlorella homosphaera oil showed growth inhibition for the 10 strains tested, in addition to antibiofilm activity for 8 strains, bactericidal action for 3 of 3 isolates, and satisfactory healing action in 48 hours

Fatores de risco para infecção de ferida cirúrgica em puérperas submetidas a cesarianas em hospital universitário de referência.

Backgound and Objectives: Surgical wound infections (SWI) postoperative complications are common and present significant morbidity and mortality with increased time and cost of hospitalization, especially for women undergoing cesarean delivery. Therefore, the aim of this study was to evaluate risk factors for IFC in the reference in high-risk pregnancies from public Belo Horizonte. Methods: A cohort study performed in a referral Maternity - HC / UFMG, 2011-2012, with notification of SWI by active surveillance. All patients undergoing cesarean section were included and telephone contact was performed up to 30 days postpartum. The database was entered in the Statistical Package for Social Sciences. Results: We identified 708 women undergoing cesarean section and telephone contact was achieved with 487 of them during postpartum period. In 14 cases criteria for diagnosis of SWI was full filled (2.9% rate). When comparing groups of women with and without SWI, only the number of digital vaginal examination (≥ 2) was statistically significant for SWI cases. Conclusion: In the case of IFC, the average of digital vaginal examination was below reported in literature. It is emphasized that the procedure should be performed when absolutely necessary, respecting the rules of asepsis. KEYWORDS: Cesarean section. Surgical wound infection. Epidemiological surveillance. Diseases notification. Postpartum period.Justificativa e Objetivos: Infecções de ferida cirúrgica (IFC) constituem complicações pós-operatórias comuns e apresentam importante morbimortalidade, com aumento no tempo e custo de hospitalização, especialmente para mulheres submetidas a parto cesariana. Por isso, o objetivo do presente estudo foi avaliar fatores de risco para IFC em serviço de referência em gestação de alto risco da rede pública de Belo Horizonte. Métodos: Estudo transversal realizado na maternidade do Hospital das Clínicas em Minas Gerais, de 2011 a 2012, com notificação de IFC por vigilância ativa. Todas as pacientes submetidas à cesárea no serviço foram incluídas e contato telefônico foi realizado até 30 dias pós-parto. Resultados: Identificaram-se 708 mulheres submetidas a cesariana, sendo 487 (68,8%) puérperas contatadas por telefone. Em 14 (2,9%) puérperas os dados fornecidos preencheram os critérios para diagnóstico de IFC. Na comparação entre grupos de mulheres com e sem IFC, apenas o número de toques vaginais (≥ 2) foi estatisticamente significativo para os casos IFC. Conclusão: Nos casos de IFC, o número médio de toques realizados está abaixo do observado na literatura. Ressalta-se que o procedimento deve ser realizado quando absolutamente necessário, respeitando-se as normas de assepsia

Índice de risco cirúrgico e infecção de ferida operatória em puérperas submetidas a cesarianas.

Backgound and Objectives: Considering the use of active surveillance assists in infection identification and the need for studies that use Surgical Risk Index (SRI) for assessment of Surgical Site Infection (SSI) in cesareans, this study aims to determine the incidence of SSI and analyze the applicability of SRI in the prediction of SSI in women in the postpartum period after being submitted to a cesarean section at a university hospital between April 2012 and March of 2013. Methods: Prospective cohort study. Information notifying SSI by active surveillance was collected daily from the medical records. After hospital discharge, the mothers were contacted through telephone calls to identify infection criteria within 30 days after the cesarean. Descriptive and comparative analyses were performed. The chi-square test was used to compare groups. Results: 737 cesareans were performed. Telephone contact was achieved with 507 (68.8%) women up to 30 days postpartum, with loss of follow-up of 230 cases (31.2%). The medical consultation in the post-partum period occurred with 188 (37.08%) women, with whom telephone contact was obtained, on average, 17.28 days (SD=8.39) after delivery. It was verified that 21 patients met the criteria for SSI, with a 4.14% rate. A total of 12 cases (57.1%) were classified as superficial SSI, 5 (23.8%) as deep and 4 (19.1%) as infection of organs and cavities. The SRI and its risk variables were not associated with SSI in patients submitted to cesarean sections. Conclusion: The SRI and the risk variables included in this index were not associated to SSI in patients submitted to cesarean sections. KEYWORDS: Cesarean Section; Surgical Wound Infection; Epidemiological Surveillance; Infection Control; Risk Index; Disease Notification.Justificativa e Objetivos: Tendo em vista que o emprego de vigilância ativa colabora na identificação de infecção e a necessidade de estudos que utilizem o Índice de Risco Cirúrgico (IRC) para avaliação de Infecção de Ferida Cirúrgica (IFC) em cesarianas este estudo objetiva determinar a incidência de IFC e analisar a aplicabilidade do IRC na predição das IFC em puérperas submetidas à cesariana em hospital universitário entre abril de 2012 e março de 2013. Métodos: Estudo de coorte prospectivo concorrente. Informações de notificação das IFC por vigilância ativa foram coletadas diariamente nos prontuários. Após alta hospitalar, as puérperas eram contatadas por ligações telefônicas para identificação de critérios de infecção até 30 dias após a cesariana. Análises descritivas e comparativas foram conduzidas. Para comparação dos grupos foi utilizado teste de Qui-quadrado. Resultados: Foram realizadas 737 cesarianas. Contato telefônico foi conseguido com 507 (68,8%) puérperas até 30 dias pós-parto, com perda de seguimento de 230 casos (31,2%). A consulta médica no puerpério ocorreu em 188 (37,08%) mulheres com quem foi obtido contato telefônico, em média, 17,28 dias (± 8,39) após o parto. Verificou-se que 21 casos preencheram critérios para IFC, taxa de 4,14%. Classificou-se 12 (57,1%) casos como infecção de ferida cirúrgica superficial, 5 (23,8%) como profunda e 4 (19,1%) de órgãos e cavidades. O IRC e suas variáveis de risco não foram associados à IFC em pacientes submetidas a cesarianas. Conclusão: O IRC e as variáveis de risco incluídas nesse índice não foram associados à IFC em pacientes submetidas a cesarianas. DESCRITORES: Cesárea; Infecção da Ferida Operatória; Vigilância epidemiológica; Controle de Infecções; Índice de Risco; Notificação de doenças

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

<b>Effect of estradiol-17β on the sex ratio, growth and survival of juvenile common snook (<i>Centropomus undecimalis</i>)

Sex control in fish is a promising technique for aquaculture, since it gives advantages associated with one sex. The aim of this study was to investigate the feminization of common snook (Centropomus undecimalis) by oral administration of two doses of estradiol-17β (50 and 100 mg E2 kg-1 feed) and control treatment for 45 days and to evaluate their effects on the sex ratio, growth and survival of common snook juveniles. After this period, fish were fed only with commercial feed without hormone supplementation. During the period of E2 administration, the control fish grew more than those in the other treatments. At the end of the experiment in the treatment with 50 mg E2 kg-1, 26.32% of the fish were male, 68.42% were female, and 5.26% were intersex. In the treatment with 100 mg E2 kg-1, 10% of the fish were male, and 90% were female. There was no difference in growth among the treatments after 11 months. This study showed that it is possible to obtain 90% common snook females using feeds with 100 mg E2 kg-1 for 45 days without impairing the fish growth or survival