This study aimed to macroscopically and microscopically evaluate the healing of skin wounds induced in rats by topical application of cassava polyamide biopolymer hydrogel. In total, 32 rats were used and divided into four groups (n= 8): negative control - saline solution; positive control - use of commercial ointment; experimental group - I - ointment + cassava hydrogel; experimental group - II - cassava hydrogel. A 1cm2 wound induced on the animals dorsum was treated and evaluated. At day 21 post-operation, the animals were sacrificed by anesthetic overdose, and then 1cm2 of cicatricial skin from the wound region was collected. The material was cut to evaluate healing. In the macroscopic evaluation, complete healing was observed at the end of 21 days. Re-epithelialization was observed histologically; the connective tissue in the negative control, positive, and experimental - I groups was characterized by an abundance of collagen fibers, fibroblasts, and blood vessels. In experimental group - II additional healing was observed, as evidenced by the arrangement of collagen fibers and fibroblasts, and the reduction of neoformed vessels. Thus, we concluded that the hydrogel can assist in healing skin wounds, especially in the remodeling phase.
Museus de ciência constituem um espaço cultural predominante visitado por crianças e adolescentes, e na maioria das vezes são utilizados para consolidar conhecimentos adquiridos na educação formal, bem como os conhecimentos de origem empírica. O acervo do museu de ciências da UNIPAR, possui animais selvagens, da fauna Brasileira taxidermizados, que por sua vez, com destaque a fauna da região noroeste do estado do Paraná, cumprindo o papel das coleções museológicas, pois além de ser uma coleção, as peças neles encontradas devem ser conservadas e pesquisadas, contribuindo para o conhecimento e aprimoramento do estudo científico na educação básica, popularizando o conhecimento. Dentro da dinâmica do museu ainda é possível desenvolver pesquisas científicas que podem resultar em descobertas como a de um baço acessório encontrado em uma espécie de Felídeo, a descrição de tal estrutura é muito escassa na literatura. Assim os museus de ciência colaboram diretamente com o ensino, a pesquisa e a extensão universitária.
This study sought to identify and quantify the trampling of carcasses of animals along the highways in the northwest region of the state of Paraná and for this it was necessary the support of the Environmental Police of Paraná, where animals carcasses were collected along the highways BR-376, PR-082, PR-151, PR-180, PR-182, PR-323, PR-486, PR-489, PR-490, PR-151 and PR-518. After the receipt of the specimens, the identification was carried out through the external morphology according to the taxonomic classification, then, were realized the dissection and autopsy. Roadkill of 50 specimens were recorded, being 10 birds, seven reptiles and 33 mammals. With the identification of the animals species run over in this study, it is possible to conclude that the construction of highways and the intense traffic of cars and trucks have caused significant environmental problems because it is necessary to deforest areas rich in flora and fauna to their construction and with this situation there is change in the migratory routes of animals and food behavior change that significantly increases the chances of a roadkill and the animals come to death. Studies like this one, are required to submit the environmental impacts (environment and wild animals) that the constructions or even the increase of highways cause on flora, fauna, and also for the environment itself to be proposed before the work plan with measures that aim to reduce these impacts.
Five male specimens of the species Molossus rufus from north‐western Parana were captured, identified, packaged and transported to the laboratory for weighing and later euthanasia with isoflurane. They were laparatomized for evaluation of macroscopic characteristics and the digestive tube segments were collected for fixation in 10% neutral formalin for histological processing, after 48 h of fixation. Macroscopically, the digestive tube had an oesophageal segment in the abdominal cavity, with a J‐shaped saccular stomach, in addition to a small intestine divided into duodenum, jejunum‐ileum and terminal ileum. In the large intestine, an organ dilatation was observed from the small intestine with a one‐way oral‐aboral ending in the anus, which was called the descending colon. Morphological similarity of the walls of all segments with those of other mammals was observed; however, it presented some peculiarities such as the absence of oesophageal glands, Brunner in the intestine, cecum and appendages. The anatomical disposition and tissue pattern were similar to that found in other insectivorous species. The adaptations of the digestive tube of this species are possibly due to the insectivorous feeding habits, which can be impacted due to anthropic actions in foraging environments.
Coturniculture has been promising, progressing from a subsistence to a technical activity due to its quick production, low breeding investment, and rapid economic return. After the restriction of antimicrobials as growth promoters, some studies aimed to evaluate alternative products that would make the farming of healthy birds viable without impacting their performance, with commercial Macleaya cordata extract being one of these substitutes. The functions of the gastrointestinal tract are coordinated mainly by the enteric nervous system, and the myenteric plexus is responsible for the reflex control of contractile activities of the external muscles. Thus, this study located and demonstrated the distribution of the myenteric plexus, quantifing the total population of myenteric neurons (Giemsa+) and the subpopulation of myenteric nitrergic neurons (NADPH-d+), and evaluated the effects of commercial Macleaya cordata extract on these populations of quail jejunum neurons. A total of 240 one-day-old female laying quails were distributed into four treatments, with four repetitions of 15 birds each. The test groups (T1, T2, and T3) were treated with commercial Macleaya cordata extract throughout the experimental period using the following doses: T1 - test group, basal diet added with 150 ppm of the extract in the feed; T2- test group, basal diet added with100 ppm of the extract in the feed; T3 - test group, basal diet added with 50 ppm of the extract in the feed; and T4 - control group, basal diet with no added extract. The study included histological analysis, Giemsa+, and NADPH-d+ myenteric neuron staining. The results showed that the myenteric plexus is located between longitudinal layer fibers and in the transition region between the longitudinal and circular layers of the muscular tunic, with the myenteric population organized into ganglia and isolated in the region of neuronal fiber bundles. The commercial Macleaya cordata extract showed no quantitative changes in the myenteric Giemsa+ population and myenteric NADPH-d+ subpopulation, however, the groups that consumed the extract showed greater NADPH-d+ neuron activity compared to the control group, implying that the food remained longer in the intestinal lumen, therefore, enabling greater nutrient use and resulting in increased productive performance.
A comercialização de alimentos prontos para o consumo é algo que vem crescendo com o passar dos anos, devido à inserção da mulher no mercado de trabalho e o dispendioso tempo de preparo de alimentos em domicilio, favorecendo assim a procura pelos alimentos prontos pela população trabalhadora. Entretanto, esses alimentos se tornam fontes de disseminação de alguns patógenos prejudiciais à saúde humana, que geram doenças e prejuízos. As Doenças Transmitidas por Alimento (DTA) são causadas por micro-organismos presentes nos alimentos que na maioria das vezes passam por grande processo de manipulação e são preparados no próprio estabelecimento comercial sem controle higiênico sanitário. Alguns desses micro-organismos são os coliformes totais, que são utilizados como principal indicador das condições higiênico-sanitárias de locais de processamento de alimentos e também da água; os coliformes termotolerantes, indicadores de más condições higiênico-sanitárias dos alimentos, dos locais de preparação e ou armazenamento sendo problemas frequentes na manipulação de alimentos preparados; e os Staphylococcos spp. micro-organismos causadores de várias infecções, que são encontrados comumente na pele dos seres humanos. Neste trabalho objetivou-se mostrar alguns resultados de pesquisas da qualidade microbiológica de alimentos comercializados na cidade de Umuarama – PR. Uma análise do tratamento térmico de coxinhas fritas frente aos micro-organismos citados anteriormente mostrou que os coliformes totais e termotolerantes presentes nas amostras eram resistentes a temperatura de 60ºC a 65ºC, temperatura esta do interior do salgado após fritura, sendo que a contagem de coliformes totais em amostras cruas foi de 1,4x105 UFC/g e após a fritura reduziu para 2,1x104, sendo que a legislação recomenda ausência nas amostras. As amostras cruas apresentaram coliformes termotolerantes 1,3x104UFC/g e após cocção 4,1x103UFC/g, demonstrando estar fora dos padrões permitidos de 2x10UFC/g, conforme a RDC nº 12 de 2001 da Agência Nacional de Vigilância Sanitária. Outra pesquisa realizada no comercio de Umuarama – PR, também mostrou que a coxinha de carne apresentava contaminação excedente para coliformes termotolerantes 5,7x10² NMP/g. Neste contexto, as DTA firmam-se como de grande importância social e econômica, pois geram anualmente custos à saúde pública relacionada aos surtos em determinadas localidades, principalmente àquelas sem medidas como Boas Práticas de Fabricação. Dessa forma, como medida de controle, devem-se criar cursos de capacitação em Boas Práticas de Fabricação de Alimentos, com esclarecimento de dúvidas e promoção de soluções para problemas encontrados em cada local, ou seja, análise criteriosa das necessidades do estabelecimento. Essas medidas fazem com que vendedores e manipuladores de alimentos se tornem capazes de entender a importância do assunto, e assim implantar essas praticas para o fornecimento de alimentos seguros para seus consumidores.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
334 Leonard St
Brooklyn, NY 11211
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.