Murakami T, Tanaka T, Taguchi T, Ohtsuka A, Kikuta A
Department of Anatomy, Okayama University School of Medicine, Japan.
Microsc Res Tech. 1995 Oct 1;32(2):112-9. doi: 10.1002/jemt.1070320206.
The blood vascular bed and pericapillary space of the rat parathyroid gland were studied by scanning electron microscopy of vascular casts, freeze-cracked tissue blocks, and NaOH-treated tissue specimens. The findings were supplemented by transmission light and electron microscopy of sectioned tissue samples. The rat parathyroid gland contained a rich network of freely anastomosing capillaries. These capillaries were surrounded by marked pericapillary spaces that were demarcated by basal lamina of both capillaries and parenchymal cells. The pericapillary spaces contained many collagen fibrils and frequently issued some projections running deep into the sheets of parathyroid cells. The latter projections may be useful to supply the parenchymal cells located far from the capillaries. The collagen fibrils may regulate the flow of tissue fluid in the pericapillary space and convey parathyroid hormone, which is released at the apicolateral domain, into the capillaries.
通过对血管铸型、冷冻断裂组织块和氢氧化钠处理的组织标本进行扫描电子显微镜观察，研究了大鼠甲状旁腺的血管床和毛细血管周围间隙。通过对切片组织样本进行透射光镜和电子显微镜观察对研究结果进行补充。大鼠甲状旁腺含有丰富的自由吻合的毛细血管网络。这些毛细血管被明显的毛细血管周围间隙所包围，这些间隙由毛细血管和实质细胞的基膜界定。毛细血管周围间隙含有许多胶原纤维，并经常发出一些深入甲状旁腺细胞片层的突起。后者的突起可能有助于为远离毛细血管的实质细胞提供营养。胶原纤维可能调节毛细血管周围间隙中的组织液流动，并将在顶端外侧区域释放的甲状旁腺激素输送到毛细血管中。
