Laboratório de Morfologia e Atividade Física-LAMAF, Instituto de Biociências, Universidade Estadual Paulista 'Júlio de Mesquita Filho'-UNESP, Rio Claro, São Paulo, Brazil.
Instituto de Ciências Agrárias, Universidade Federal dos Vales do Jequitinhonha e Mucurí, Unaí, Minas Gerais, Brazil.
Microsc Res Tech. 2021 Aug;84(8):1621-1627. doi: 10.1002/jemt.23722. Epub 2021 Feb 12.
The morphology of the oral cavity of mammals relates to diet, habitat, and function. The palate is an important region with adaptations for oral somatosensation and mechanical loads due to the pressure of the tongue with food. The research aimed to describe the structural and ultrastructural characteristics of the epithelium and the connective tissue cores of the guinea pig palate using macroscopic, light microscopy, scanning electron microscopy, and transmission electron microscopy analysis. The hard palate had conical and filiform papillae, and the soft palate had open salivary ducts. After the removal of the epithelium, the connective tissue cores revealed thin filaments and laminar projections in the hard palate, and opening ducts were evidenced in the soft palate. The palatine epithelium was keratinized and organized by layers, lamellated corpuscles were found in lamina propria of the hard palate. In contrast, the soft palate had glands clusters associated with nerve fibers, and in both regions were identified telocytes. We concluded that the hard palate presented conical and filiform papillae that differ from other mammals. Besides, it is a new description of the connective tissue cores morphology and the first record of the telocytes in this anatomical region for mammals.
哺乳动物口腔的形态与饮食、栖息地和功能有关。 palate（腭）是一个重要的区域，其具有适应口腔触觉和机械负荷的结构，这是由于食物对舌头的压力。本研究旨在使用宏观、光学显微镜、扫描电子显微镜和透射电子显微镜分析来描述豚鼠腭的上皮组织和结缔组织核心的结构和超微结构特征。硬腭有锥形和丝状乳头，软腭有开放的唾液腺管。去除上皮组织后，硬腭的结缔组织核心显示出细纤维和层状突起，而软腭则有开口的导管。腭上皮组织角化并分层排列，硬腭固有层中发现板层小体。相比之下，软腭有与神经纤维相关的腺体簇，在这两个区域都鉴定出了 telocytes（间质细胞）。我们得出结论，硬腭有锥形和丝状乳头，这与其他哺乳动物不同。此外，本文还首次描述了哺乳动物腭部结缔组织核心的形态，并首次记录了该解剖区域的间质细胞。
