Doctoral Program in Technologies Applied to Animals of Regional Interest, Universidade Federal do Piauí, Teresina, Piauí, Brazil.
Department of Morphology, Health Sciences Center, Federal University of Piauí, Teresina, Piauí, Brazil.
Anat Histol Embryol. 2022 Jul;51(4):477-483. doi: 10.1111/ahe.12817. Epub 2022 May 23.
Euphractus sexcinctus is a wild mammal native to the Americas; they have great diversity and are not in danger of extinction like other armadillo species. Despite the diversity, the morphology of several biological systems of this species has not been fully described. This study details the gross and microscopic anatomy of the urinary system in Euphractus sexcinctus, a six-banded armadillo, compared with other mammalian study models. Six animals were dissected in the study. In the anatomical analysis, the kidneys, ureters, urinary bladder and urethra were dissected and photographed; then, fragments were submitted to histological routine for staining with haematoxylin-eosin, toluidine blue and Masson's trichrome for visualization under light microscopy. The six-banded armadillo ureter is histologically composed of four concentric layers. The urinary bladder is presented with three tissue layers. The pattern of constitution and distribution of urinary system structures was compatible with that of most domestic like Canis familiaris and wild animals like Bradypus torquatus, with adaptations for the arid and semi-arid habitat. The description of the morphology of Euphractus sexcinctus presents great relevance both for its conservation and for its use as a model for clinical research.
六带犰狳是原产于美洲的野生哺乳动物；它们具有很大的多样性，不像其他犰狳物种那样面临灭绝的危险。尽管存在多样性，但该物种的几个生物系统的形态尚未得到充分描述。本研究详细描述了六带犰狳（Euphractus sexcinctus）泌尿系统的大体和显微解剖结构，并与其他哺乳动物研究模型进行了比较。在这项研究中，对 6 只动物进行了解剖。在解剖分析中，对肾脏、输尿管、膀胱和尿道进行了解剖和拍照；然后，将片段提交给常规组织学进行染色，用苏木精-伊红、甲苯胺蓝和Masson 三色染色，在光镜下观察。六带犰狳的输尿管在组织学上由四层同心层组成。膀胱呈现出三层组织。泌尿系统结构的组成和分布模式与大多数家养动物（如犬科）和野生动物（如树懒）相似，适应了干旱和半干旱的栖息地。六带犰狳形态的描述对于其保护和作为临床研究模型都具有重要意义。
