Department of Biology, College of Science, Jouf University, P.O. Box 2014, Sakaka, Al-Jouf, Saudi Arabia; Department of Zoology, Faculty of Science, Fayoum University, Fayoum, Egypt.
Biology Deprtment, Faculty of Science, King Khalid University, Abha, Saudi Arabia; Zoology Deprtment, College of Science, Damanhour University, Damanhour, Egypt.
Acta Histochem. 2021 Jul;123(5):151742. doi: 10.1016/j.acthis.2021.151742. Epub 2021 Jun 17.
The present investigation tries to reflect histochemical and stereological properties of the parotid gland (PG) and sublingual gland (SLG) in the Caucasian squirrel. Totally, five male Caucasian squirrels were used. The glands were examind histochemical using PAS, Alcian blue (AB, pH = 2.5) and Aldehyde fucshin (AF) stainings. Total volume of the glands, acini, ducts as well as total length of ducts were estimated using streological procedures. The PG had a unique morphology and were connected to each other with an intermediated isthmus. The SLG was oval-shaped. Serous acini of PG exhibited strong, negative and weak reaction with AF, AB and PAS, respectively. While, mucous acini of SLG showed positive staining for AB and PAS, and negative staining for AF. The ductal system was consisted of intercalated (Id), striated (SD) and excretory ducts (Ed). The Sd in PG was lined with simple cuboidal to the columnar epithelium, while it was lined with simple cuboidal epithelium in SLG. The Ed was lined with stratified cuboidal epithelium in both glands. The striated duct was longest duct in both glands, the excretory and intercalated ducts were the shortest ones in PG and SLG, respectively. The maximum total volume in both gland were blonged to the acini and straited ducts. It concluded that PG and SLG in the Caucasian squirrel have some distinct structural properties in comparison to other rodents and mammalis species.
本研究试图反映白颊松鼠腮腺（PG）和舌下腺（SLG）的组织化学和体视学特性。总共使用了五只雄性白颊松鼠。使用 PAS、Alcian blue（AB，pH = 2.5）和 Aldehyde fucshin（AF）染色对腺体进行组织化学检查。使用体视学程序估计腺体、腺泡、导管的总体积以及导管的总长度。PG 具有独特的形态，彼此通过一个中间峡部相连。SLG 呈椭圆形。PG 的浆液性腺泡对 AF、AB 和 PAS 分别表现出强烈、阴性和弱阳性反应。而 SLG 的粘液性腺泡对 AB 和 PAS 呈阳性染色，对 AF 呈阴性染色。导管系统由闰管（Id）、纹状管（SD）和分泌管（Ed）组成。PG 的 SD 由单层立方到柱状上皮排列，而 SLG 的 SD 由单层立方上皮排列。Ed 在两种腺体中均由复层扁平立方上皮排列。纹状导管是两种腺体中最长的导管，PG 和 SLG 中的排泄管和闰管分别是最短的导管。两种腺体的总腺泡和纹状导管体积最大。综上所述，与其他啮齿动物和哺乳动物相比，白颊松鼠的 PG 和 SLG 具有一些明显的结构特性。
