Armadillos, Xenarthras representatives, known for adaptability to different ecosystems, own specific morphophysiological characteristics that are not known and deserve to be studied. The aim of this study was to describe the morphology of cartilage of the larynx of the nine-banded armadillo (Dasypus novemcinctus). Five dead armadillos were donated by the Chico Mendes Institute of Biodiversity (ICMBio-PI) to the Federal University of Piauí. The animals were fixed and dissected for removal of the larynx. The cartilages were identified and described, photodocumented, and schematized. Fragments with about 0.5 cm of each cartilage were collected and submitted to classical histology for Hematoxylin-Eosin coloring. The slides were assembled in enterlan and analyzed under a light microscope. The larynx of the armadillo (D. novemcinctus) is located in the mentonian region, ventral to the esophagus, and due to the total positioning of the tongue in the oral cavity, there is also a cranial cervical position in this species. The larynx has five cartilages, they are: a cricoid, a thyroid, an epiglottis, and two arytenoids. The corniculate process is present; however, the cuneiform process is absent. The epiglottis has a discrete bifurcation at its apex. In all cartilages epithelial variations are observed. The tissues are varied from squamoso stratified to cylindrical pseudostratified, with propria lamina rich in mucoserosas glands. With the exception of epiglottic cartilage, predominantly elastic, the rest are hyaline. The larynx of D. novemcinctus, although the same number of cartilages, differs morphologically and microscopically from the larynx of other species.
SILVA, A.B.S. et al. Distribuição intraparenquimal da artéria hepática em tatu-peba (Euphractus sexcinctus) e tatu-verdadeiro (Dasypus novencinctus). PUBVET, Londrina, V. 8, N. 21, Ed. 270, Art. 1805, Novembro, 2014
To evaluate the effect of mint leaf in reducing the neutrophil chemotaxis in lung tissue of Rattus norvegicus wistar. Methods: Twenty-eight Wistar rats were divided into four groups. In Group 1 (sham), only a laparotomy was performed. In Group 2 (positive control), the laparotomy was followed by upper mesenteric artery clamping and administration of beclomethasone via nebulization for ten minutes. In Group 3 (negative control) only the laparotomy and clamping were done. In Group 4 (mint), the laparotomy and clamping were followed by nebulization of mint leaf extract for ten minutes. All clamps were removed after forty-five minutes from their insertion and treatments, when performed, were instituted soon after. After ninety minutes of reperfusion, right lung base tissue samples were collected and properly stored from all rats. Results: In both Groups 2 and 4, there was reduction in inflammation in comparison to Group 3. Group 1 showed the lowest inflammatory cell count. Comparing average inflammatory cell counts of all groups to each other, there was statistical significance among all, except between groups 2 and 4. Conclusion: These results show that mint leaf extract is able to, trough nebulization treatment, significantly reduce the neutrophil chemotaxis in pulmonary tissue of Rattus norvegicus wistar subjected to induced acute lung injury.
Avaliou-se a infestação de piolhos mastigadores (Struthiolipeurus rheae) em emas (Rhea americana) mantidas em um criadouro comercial no estado do Piauí. Foram utilizadas 16 emas, sendo 12 adultas, das quais seis eram machos e seis eram fêmeas. Apenas quatro emas analisadas eram jovens. Coletaramse, aleatoriamente, duas penas das asas e duas da base do pescoço de cada animal, as quais foram colocadas em sacos plásticos fechados. Posteriormente, os piolhos foram contados, preservados em frascos com álcool etílico 70ºGL, e enviados ao Laboratório de Sanidade Animal da Universidade Federal do Piauí. Nas amostras obtidas das emas adultas, encontrou-se um total de 77 piolhos, sendo a incidência nas penas colhidas das asas, 84,4% (65), significativamente maior do que nas penas da base do pescoço, 15,6% (12). Não foram encontrados piolhos nos animais jovens nascidos em chocadeira. As emas adultas apresentaram um alto grau de infestação por S. rheae.. A incubação artificial dos animais evitou a infestação das emas jovens por S. rheae. A alta infestação por S. rheae inviabiliza o aproveitamento comercial das penas de emas. Este é o primeiro registro da ocorrência de S. rheae em emas no estado do Piauí. Palavras-chave: Mastigóforos. Parasitologia. Ratitas.
Esta pesquisa teve por objetivo avaliar a topografia e morfologia externa, ramificação e distribuição intraparenquimal dos vasos arteriais lienais do baço de cutia (Dasyprocta prymnolopha). Foram analisados vinte baços de animais jovens e adultos, treze machos e sete fêmeas, procedentes do Núcleo de Estudos e Preservação de Animais Silvestres do Centro de Ciências Agrárias da UFPI. Em dezesseis baços, verificou-se “in situ” a topografia e a morfologia externa, após a abertura da cavidade abdominal. Para o estudo da vascularização arterial, foram utilizados dez órgãos, destes, seis foram retirados da cavidade abdominal, injetados com Neoprene látex a 60%, por meio da artéria lienal, fixados com solução aquosa de formaldeído a 10%, e dissecados. Em outros quatro baços, procederam a repleção da referida artéria, com solução de acetato de vinil corado, submetidos ao método de corrosão, utilizando-se ácido sulfúrico a 30%, obtendo-se os moldes vasculares. Verificou-se o baço da cutia com formato triangular em 68,7%, e em 31,3%, retangular. A artéria lienal, sempre com divisão extra-parenquimal origina de 5 a 12 ramos, preponderantemente, 6 ramos, em 40% dos casos, que penetram no parênquima, vascularizam territórios independentes, caracterizando os segmentos arteriais. Em 20% dos baços examinados, observou-se artérias extra-hilares e, em apenas 1 caso (10%) foi visto uma anastomose entre os ramos arteriais segmentares.
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