Analyses of plumage coloration and genetic variation confirm the hybridization of Pipra fasciicauda and Pipra aureola in the Brazilian Amazon basin

The present study aimed to confirm the occurrence of a hybridization event between the band-tailed manakin (Pipra fasciicauda) and the crimson-hooded manakin (Pipra aureola), based on the existence of a specimen that presents morphological traits of both taxa. We analyzed 297 taxidermized skins of adult males of the two species, including the potential hybrid. We also analyzed the mitochondrial (ND2, ND3 e COI) and nuclear (FGB-I5, MB-I2 e GAPDH-I3) genes of 12 adult specimens of the two taxa, diagnosed phenotypically, in addition to the potential hybrid. The analyses of the plumage indicated that the potential hybrid has an intermediate pattern of white banding on the tail that is less extensive than that found in Pipra fasciicauda, but that its other phenotypic traits are characteristic of Pipra aureola. The molecular topologies revealed two clades, one that groups P. aureola together with the potential hybrid, and the other that corresponds to P. fasciicauda. These findings allowed us to confirm the occurrence of a process of hybridization and potential introgression through secondary events in the P. aureola lineage.Peer reviewe

Profile of health professionals who completed a master’s, doctoral, or post-doctoral degree in one Brazilian pediatric program

OBJECTIVE: This study aimed to determine the personal and professional characteristics, and the physical, psychiatric/psychological, and professional issues that exist among master’s-, doctoral-, and post-doctoral-level health professionals. METHODS: A cross-sectional, online, self-reported survey of 452 postgraduates who completed master’s, doctoral, or post-doctoral degrees in one graduate program in pediatrics in Sa˜o Paulo, Brazil, was conducted. RESULTS: The response rate was 47% (211/453). The majority of participants were women (78%) and physicians (74%), and the median age was 47 years (28-71). Master’s, doctoral, and post-doctoral degrees were reported by 73%, 53%, and 3%, respectively. High workload (440 hours/week) occurred in 59%, and 45% earned X15 minimum wages/month. At least one participation in scientific meeting in the past year was reported by 91%, and 79% had published their research. Thirty-nine percent served as a member of a faculty of an institution of higher learning. The data were analyzed by two age groups: participants aged p48 years (group 1) and participants aged 448 years (group 2). The median rating of overall satisfaction with the profession in the past year [8 (0-10) vs. 9 (1-10), p=0.0113]; workload 440 hours/week (53% vs. 68%, p=0.034); and X15 minimum wages/month (37% vs. 56%, p=0.0083) were significantly lower in group 1. Further analysis by gender revealed that the median rating of overall satisfaction with the profession in the past year [8 (0-10) vs. 9 (3-10), p=0.0015], workload 440 hours/week (53% vs. 83%, p=0.0002), and X15 minimum wages/month (37% vs. 74%, p=0.0001) were significantly lower in women compared with men. The median rating of overall satisfaction with the mentorship supervision provided was significantly higher among the women 10 (5-10) vs. 10 (2-10), p=0.0324]. CONCLUSIONS: The majority of master’s-, doctoral-, and post-doctoral-level health professionals were women and physicians, and had published their thesis. Younger postgraduates and women reported low salaries, less likelihood of working 440 hours/week, and less overall satisfaction with their profession. Further longitudinal and qualitative studies are warranted to assess career trajectories after graduation

Healing of Skin Wounds in Rats: Influence of Low-Level Laser Therapy, Alone or Combined with Natural Products

Background: A great variety of natural products have been evaluated for the skin wound healing due to anti-inflammatory, antioxidant and antibacterial activities, and procollagen synthesis, of which may be mentioned the honey and propolis. In turn, low-level laser therapy (LLLT) is considered an important tool in the treatment of skin wounds, because of ability to raise the ATP production, to stimulate the microcirculation, and formation of new blood vessels. Therefore,this study aimed to assess the influence of LLLT, alone or combined with natural products, in the healing of excisional skin wounds in rats. Materials, Methods & Results:  One hundred twenty-six male Wistar rats, aged 14 weeks, were randomly divided into seven groups (n = 18 per group) according to wound treatments: G1 (negative control): 0.9% saline solution; G2 (positive control): allantoin + zinc oxide ointment; G3: LLLT; G4: mixture of honey + 5% propolis hydroalcoholic solution; G5: LLLT + honey + hydroalcoholic solution of 5% propolis; G6: LLLT + honey in natura; G7: LLLT + 5% propolis hydroalcoholic solution. Six rats from each group were euthanized on the 7th, 14th, and 21th postoperative days. Macroscopic and histological evaluations of wound healing were performed. A decrease in wound area occurred in all groups, but in general G4 had the higher reduction and G1 and G3 had the lower reductions. These findings corresponded to the percentage of wound contraction, since the largest contraction was G4 and the lowest contractions were G1 and G3. Histological analysis showed no significant difference among groups on the 7th postoperative day. On postoperative day 14, a significant decrease in hemorrhage occurred between G1xG4, G1xG5 and G1xG7, and a significant decrease in congestion between G1xG7 and G2xG5. In addition, intensity of the inflammatory infiltrate showed a significant reduction between G1xG7, G2xG7 and G3xG7. On postoperative day 21, a significant changed from mixed to mononuclear inflammatory infiltrate was observed between G1xG3, G1xG4, G1xG6, G1xG7, G2xG3, and G2xG6. Regarding organization of fibroblasts, there were differences between G1xG6 and G1xG7. Discussion: Spite the red laser has been associated to in increase fibroblast proliferation, G3 showed inadequate decrease in wound area and percentage of contraction. Histological examination showed no differences among groups in the inflammatory phase. However, in the proliferative and remodeling phases around days 14 and 21 were found some differences among groups, which may be related to the actions of the natural products, or laser. Studies have shown that honey acts as a repair and anti-inflammatory agent in skin woundthat may be associated to lower hemorrhage in G4 and G4 compared to G1 on day 14. Propolis is related to reduction of free radicals and increasing the amount of collagen, which may have contributed for quality improvement of the inflammatory infiltrate in G4 and G7 compared to G1, and fibroblast organization in G7 at postoperative day 21. In conclusion, macroscopically the mixture of honey + 5% propolis hydroalcoholic solution was the most effective in reducing wound area and increasing wound contraction. However, based on the parameters evaluated histologically, may be highlighted the evolution of the treatments with LLLT + honey, as well as LLLT + 5% propolis hydroalcoholic solution. Keywords: honey, propolis, biomodulation, wound, healing

Wild dogs at stake: deforestation threatens the only Amazon endemic canid, the short-eared dog (Atelocynus microtis)

The persistent high deforestation rate and fragmentation of the Amazon forests are the main threats to their biodiversity. To anticipate and mitigate these threats, it is important to understand and predict how species respond to the rapidly changing landscape. The short-eared dog Atelocynus microtis is the only Amazon-endemic canid and one of the most understudied wild dogs worldwide. We investigated short-eared dog habitat associations on two spatial scales. First, we used the largest record database ever compiled for short-eared dogs in combination with species distribution models to map species habitat suitability, estimate its distribution range and predict shifts in species distribution in response to predicted deforestation across the entire Amazon (regional scale). Second, we used systematic camera trap surveys and occupancy models to investigate how forest cover and forest fragmentation affect the space use of this species in the Southern Brazilian Amazon (local scale). Species distribution models suggested that the short-eared dog potentially occurs over an extensive and continuous area, through most of the Amazon region south of the Amazon River. However, approximately 30% of the short-eared dog's current distribution is expected to be lost or suffer sharp declines in habitat suitability by 2027 (within three generations) due to forest loss. This proportion might reach 40% of the species distribution in unprotected areas and exceed 60% in some interfluves (i.e. portions of land separated by large rivers) of the Amazon basin. Our local-scale analysis indicated that the presence of forest positively affected short-eared dog space use, while the density of forest edges had a negative effect. Beyond shedding light on the ecology of the short-eared dog and refining its distribution range, our results stress that forest loss poses a serious threat to the conservation of the species in a short time frame. Hence, we propose a re-assessment of the short-eared dog's current IUCN Red List status (Near Threatened) based on findings presented here. Our study exemplifies how data can be integrated across sources and modelling procedures to improve our knowledge of relatively understudied species

ANESTESIA GERAL DURANTE TIREOIDECTOMIAS: MONITORAMENTO E MANEJO INTRAOPERATÓRIO

Thyroidectomy is a common surgery to treat various conditions of the thyroid gland, including cancer, goiter and hyperthyroidism. General anesthesia is often used to ensure the procedure is carried out safely and effectively. This study examines the importance of intraoperative monitoring and management during thyroidectomy, highlighting best practices and the most advanced technologies to minimize complications and optimize surgical outcomes. Objective: Investigate and improve anesthetic practices to increase the safety and effectiveness of thyroidectomies. Methodology: The Cochrane, Scielo and Pubmed databases were used, searching for articles published between 2019 and 2021, in Portuguese or English. Final Considerations: General anesthesia during thyroidectomies, combined with adequate intraoperative monitoring and management, is crucial to ensure the safety and success of the surgery. Therefore, advanced monitoring techniques and careful airway management are essential to minimize risks and complications. Thus, interdisciplinary collaboration and continuous training of the professionals involved are fundamental to improving anesthetic practices and, thus, improving clinical results and patient well-being.A tireoidectomia é uma cirurgia comum para tratar diversas condições da glândula tireoide, incluindo câncer, bócio e hipertireoidismo. A anestesia geral é frequentemente utilizada para garantir que o procedimento seja realizado de forma segura e eficaz. Este estudo examina a importância do monitoramento e do manejo intraoperatório durante a tireoidectomia, destacando as melhores práticas e as tecnologias mais avançadas para minimizar complicações e otimizar os resultados cirúrgicos. Objetivo: : Investigar e aprimorar as práticas anestésicas para aumentar a segurança e a eficácia das tireoidectomias. Metodologia:  Foram utilizadas as bases de dados Cochrane, Scielo e Pubmed, buscando artigos publicados entre os anos de 2019 e 2021, nos idiomas Português ou Inglês. Considerações Finais: A anestesia geral durante tireoidectomias, combinada com monitoramento e manejo intraoperatório adequados, é crucial para garantir a segurança e o sucesso da cirurgia. Dessa forma, técnicas avançadas de monitoramento e uma gestão cuidadosa da via aérea são essenciais para minimizar riscos e complicações. Assim, a colaboração interdisciplinar e a formação contínua dos profissionais envolvidos são fundamentais para aprimorar as práticas anestésicas e, assim, melhorar os resultados clínicos e o bem-estar dos pacientes

Estudos Artísticos

Nesta procura continuada de reunir escritos de artistas sobre outros criadores se reuniram neste número da Revista Croma dezasseis artigos que têm em comum a determinação interventiva e emancipada. Provoca-se o inconformismo, ensaia-se o pensamento. A intervenção advém do estatuto, do capital simbólico associado à autoria. O estatuto político da arte centra o artista e tona-o vocal. A sua perspetiva, a sua síntese, a sua fantasia, são agora meios para uma mediação junto de todos, em direção a uma transformação fundamental e construtora de um dos pontos essenciais da cultura: a arte emancipada. Com a emancipação da arte, criou-se uma nova referencialidade, um novo descentramento, um olhar exterior, um olhar do homem sobre o homem, um olhar político mediado pelas formas pensadas.info:eu-repo/semantics/publishedVersio

Residual biomass potential of commercial and pre-commercial sugarcane cultivars

Sugarcane (Saccharum spp.) is an efficient and sustainable alternative for energy generation compared to non-renewable sources. Currently, during the mechanized harvest process, the straw left in the field can be used in part for the second generation ethanol and increasing the electric energy production. Thus, this study aimed to provide information on the potential for residual biomass cultivars of sugarcane cropping system. This study provides the following information: yield of straw, depending on the calculated leaf area index and the number of tillers per linear meter; primary energy production of several sugarcane genotypes; contribution of dry tops and leaves; biomass yield; and evaluation of fiber, cellulose, hemicellulose and lignin. Preliminary results obtained by researchers of the State of São Paulo, Brazil, and reCviews related studies are presented. The results suggest that the production of sugarcane straw content varies according to the cultivars; the greater mass of sugarcane straw is in the top leaves and that the potential for the crude energy production of sugarcane per area unit can be increased using fiber-rich species or species that produce more straw. The straw indexes was shown to be a good indicator and allow the estimation of straw volumes generated in a sugarcane crop. The cellulose, hemicellulose and lignin composition in sugarcane is distinct among varieties. Therefore, it is possible to develop distinct biomass materials for energy production and for the development of sugarcane mills using biochemical processes and thermal routes

Síndrome de DiGeorge: um relato de caso: DiGeorge's Syndrome: a case report

O presente artigo objetivou apresentar o caso clínico de uma paciente pediátrica diagnosticada com a síndrome de DiGeorge e que foi admitida no setor de Cardiologia Pediátrica para correção de malformação cardíaca. Este trabalho se trata de um estudo descritivo, do tipo relato de caso, que visou analisar as principais manifestações desse distúrbio genético, bem como suas abordagens diagnósticas e terapêuticas. A criança foi submetida à correção de defeito cardíaco característico da anomalia e evoluiu com parada cardiorrespiratória, prontamente revertida, e com crise convulsiva no pós-operatório. A anomalia possui espectro clínico diverso, com repercussões que impactam sobremaneira no equilíbrio eletrolítico e nos sistemas imunológico e cardiovascular, exigindo reconhecimento em tempo hábil e a adoção de condutas assertivas para reduzir a morbidade do portador

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