Fetal development of the urinary tract of Cuniculus paca

IF 2 3区工程技术 Q2 ANATOMY & MORPHOLOGY

Microscopy Research and Technique Pub Date : 2024-06-27 DOI:10.1002/jemt.24641

Diego Ferreira de Sousa, Frederico Ozanan Barros Monteiro, Pedro Mayor, Elane Guerreiro Giese, Érika Branco, Ana Rita de Lima

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Abstract

The species Cuniculus paca is highly subject to predation, whether natural or anthropogenic, and the ability of species to withstand different levels of depredation depends directly on their reproductive dynamics. However, there is little literature on the developmental biology of this species, and so the aim of this paper was to describe the fetal development of the urinary tract of C. paca through morphological analysis. Twelve specimens with estimated gestational ages of between 75 and 157 days were used, divided into 3 groups. We found the urinary tract in pelvic-abdominal topography with macroscopic differentiation between the organs already present in the first ages studied; in addition, the microscopic structural pattern changed little between the groups. This evidence reinforces the precocial development of these individuals.

Research Highlights

With the results obtained for development of urinary tract in Cuniculus paca reinforces the precocial development of these individuals. The urinary tract had pelvic-abdominal topography with macroscopic differentiation between the organs already present in the first ages studied. The microscopic structural pattern changed little between the groups. At all analyzed fetal ages, the cortical region of kidney was characterized by the presence of glomeruli arranged throughout the region, formed by capillary plexuses surrounded by a glomerular capsule. In addition, the cortical region also presented convoluted tubules with cubic epithelial tissue cells and a brush border. The presence of a developed macula densa was observed next to the glomeruli, suggesting the initial formation of the fetal juxtaglomerular apparatus.

Abstract Image

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阉鼠尿道的胎儿发育。

Cuniculus paca物种深受自然或人为捕食的影响，而物种抵御不同程度捕食的能力直接取决于其繁殖动态。然而，有关该物种发育生物学的文献很少，因此本文旨在通过形态学分析描述 C. paca 尿道的胎儿发育过程。我们使用了 12 个估计胎龄在 75 天到 157 天之间的标本，将其分为 3 组。我们发现，泌尿道在盆腹腔地形图上的器官之间的宏观分化在研究的前几个年龄段就已经存在；此外，各组之间的微观结构模式变化不大。这些证据进一步证实了这些个体的社会前发育。研究亮点：对阉鼠尿道发育的研究结果加强了这些个体的社会前发育。泌尿道具有骨盆-腹部地形图，各器官之间的宏观分化在研究的最初年龄段就已经存在。各组之间的微观结构模式变化不大。在所有分析的胎龄中，肾皮质区的特点是肾小球遍布整个区域，由肾小球囊包围的毛细血管丛形成。此外，肾皮质区还出现了具有立方上皮组织细胞和刷状缘的曲小管。在肾小球旁观察到发达的黄斑，这表明胎儿的并肾小球装置已经初步形成。

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来源期刊

Microscopy Research and Technique 医学-解剖学与形态学

CiteScore

5.30

自引率

20.00%

发文量

233

审稿时长

4.7 months

期刊介绍： Microscopy Research and Technique (MRT) publishes articles on all aspects of advanced microscopy original architecture and methodologies with applications in the biological, clinical, chemical, and materials sciences. Original basic and applied research as well as technical papers dealing with the various subsets of microscopy are encouraged. MRT is the right form for those developing new microscopy methods or using the microscope to answer key questions in basic and applied research.