Arquitetura Da Árvore Brônquica No Sagui-De-Tufo-Preto: Um Modelo Animal Experimental Para Lesões Do Sistema Respiratório

Silva, Luana Célia Stunitz da; Lessa, Thais Borges; Santos, Paulo Ramos da Silva; Rici, Rose Elí Grassi; Bombonato, Pedro Primo; Ambrósio, Carlos Eduardo

doi:10.5380/avs.v17i4.24137

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Regarding pulmonary lobation, the classic veterinary literature clarifies the following pattern: Right lung with four lobes: Cranial, caudal, medium, and accessory and left lung divided into two lobes, cranial and caudal [19,20,23]. The results observed in our research are similar to those found in other mammals: Carnivores, such as dogs [31], Leopardus pardalis [38], N. nassua [32,33], and P. cancrivorus [35]; rodents, such as Hydrochoerus hydrochaeris [39]; Xenarthra, such as Myrmecophaga tridactyla [40]; and primates, such as Callithrix penicillata [41]. Although there is great variation in macroscopic and pulmonary lobation characteristics in several species of wild mammals, only phylogenetic studies will be able to show whether there is a pattern for bronchial lobation in different mammalian orders [27].…”

Section: Discussionsupporting

confidence: 85%

Morphological study of larynx, trachea, and lungs of Didelphis marsupialis (LINNAEUS, 1758)

et al. 2020

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Background and Aim: From a biomedical point of view, the value of marsupials as a model of primitive mammals is indisputable. Among its species, the possum is a model that allows the study of the ontogeny of different organic systems, as well as their physiological aspects. The relevance of anatomical, functional, evolutionary, and phylogenetic study of marsupials for the development of comparative morphology is extensively documented in the literature. However, there are still many aspects to be further evaluated, as the anatomy and histology of the respiratory tract of this species. The aim of this study was to describe the morphology of the larynx, trachea, and lungs of Didelphis marsupialis. Materials and Methods: Five adult male animals were donated to the Comparative Animal Anatomy Laboratory – LAAC/ CCAA-UFMA, for morphological studies. Specimens were washed in running water to perform biometrics. Then, they were fixed with 10% formaldehyde solution. After the fixation period, the specimens were positioned in dorsal decubitus position, for dissection of the respiratory system organs, by opening the ventral region of the neck and thoracic cavity, with subsequent removal of the pectoral muscles, ribs, and sternum. For histological analysis, fragments of 1 cm2 of the larynx (epiglottis and thyroid cartilages), trachea, and lungs were collected and fixed in 10% formaldehyde solution. Right after fixation, the fragments were dehydrated in increasing concentrations of ethyl alcohol (70, 80, 95, and 100%), diaphanized in xylene, embedded in paraffin, and sectioned into thin slices of 5 μm using a microtome. Sections were stained using the hematoxylin and eosin technique. Results: Anatomically, the larynx starts right after the pharynx. It consisted of four cartilages: Epiglottis, cricoid, thyroid, and arytenoid. The trachea was made of dorsally incomplete cartilaginous rings. At the entrance of the thoracic cavity, it bifurcated into the left and right main bronchus. The left lung was smaller than the right lung, with two lobes (cranial and caudal). The right lung presents the cranial, middle, caudal, and accessory lobes. Histologically, the epiglottis consisted of elastic cartilage and is covered by a non-keratinized stratified squamous epithelium. Thyroid cartilage is made of hyaline cartilage covered by smooth muscle. The trachea presents hyaline cartilage, with ciliated pseudo-stratified epithelium, serous glands, isogenic groups of chondrocytes, and perichondrium. The lung consisted of bronchi, bronchioles, and alveoli, also presenting blood vessels and arteries. Conclusion: Morphologically, the larynx, trachea, and lungs of D. marsupialis were similar to those of the other Didelphids described in the literature.

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Section: Discussionsupporting

confidence: 85%

Morphological study of larynx, trachea, and lungs of Didelphis marsupialis (LINNAEUS, 1758)

et al. 2020

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“…4) (Fig. 4), concordando com os achados em saguis (Silva et al, 2012 Figura 4. Fotomicrografia do brônquio principal e parênquima pulmonar de P. cancrivorus.…”

Section: Resultsunclassified

Morfo-histologia dos pulmões e árvore bronquial de Procyon cancrivorus (Carnivora: Procyonidae)

Paranaíba

Lima

Pereira

et al. 2016

Arq. Bras. Med. Vet. Zootec.

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Nenhuma característica dos seres vivos é tão primordial quanto a respiração, e os pulmões são os principais órgãos do sistema respiratório. Este estudo tem por objetivo descrever os aspectos macroscópicos da traqueia, dos brônquios e dos lobos pulmonares bem como os aspectos microscópicos dos brônquios pulmonares do mão-pelada e compará-los com dados da literatura de estudos realizados com mamíferos silvestres e domésticos. Utilizaram-se três exemplares de Procyon cancrivorus, que foram fixados em solução aquosa de formaldeído a 10%. Os pulmões e a traqueia foram dissecados e fotografados com câmera fotográfica digital (Câmera Sony a200, 10.2mpx). Para a identificação das características microscópicas, foram coletados fragmentos de cada brônquio seguindo as técnicas de rotina histológica. O pulmão do Procyon cancrivorus se divide em quatro lobos direito e dois lobos esquerdo e a traqueia apresenta cerca de 31 a 34 anéis. Os brônquios extrapulmonares se dividem em direito e esquerdo; o direito se subdivide em brônquios lobares cranial, médio, acessório e caudal, e o esquerdo em lobares cranial e caudal, com seus respectivos brônquios segmentares. Microscopicamente, os brônquios apresentam um epitélio prismático pseudoestratificado ciliado com células caliciformes e feixes de fibras de musculatura lisa, placas de cartilagem hialina e fibras elásticas. O conhecimento da morfologia desses órgãos nas espécies silvestres auxilia em estudos descritivos e/ou comparativos entre espécies.

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Assessment of the microbiological quality and heavy metal risk in vegetable species marketed in outdoor fairs

Coyago-Cruz,

Méndez,

Acurio

2023

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The objective of this study was to evaluate the possible health risks associated with the content of heavy metals and microorganisms in the consumption of watercress, lettuce, lemon balm and taraxaco. The products were purchased in several markets in the city of Quito. In this study, the products marketed in the north and center of the town showed better size characteristics, while the soluble solids, pH and ash showed no definite behavior. In addition, due to the volcanic origin of the Ecuadorian soils in which the samples under study were grown, it could influence the lead content that varied between 0.02 ppm (taraxacum, lemon balm and lettuce) up to 2.60 ppm (watercress). This value exceeded the maximum limit allowed by the CODEX, becoming a health risk. In addition, the microbial quality of the different species under study showed high contamination with mesophilic aerobic microorganisms and parasites. These results provide valuable information that could finance food safety decisions by the government to protect health and improve the quality of life of the people of Quito. Keywords: food safety, mesophilic aerobic, parasites, lead, Cadmium

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Arquitetura Da Árvore Brônquica No Sagui-De-Tufo-Preto: Um Modelo Animal Experimental Para Lesões Do Sistema Respiratório

Cited by 4 publications

References 8 publications

Morphological study of larynx, trachea, and lungs of Didelphis marsupialis (LINNAEUS, 1758)

Morphological study of larynx, trachea, and lungs of Didelphis marsupialis (LINNAEUS, 1758)

Morfo-histologia dos pulmões e árvore bronquial de Procyon cancrivorus (Carnivora: Procyonidae)

Assessment of the microbiological quality and heavy metal risk in vegetable species marketed in outdoor fairs

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