Boyd W H
Section of Human Anatomy, University of Guelph, Ontario, Canada.
Anat Anz. 1987;164(2):117-28.
The bovine pituitary intermediate lobe was studied by light microscopy after staining with a modified Bodian procedure. The study revealed a number of dissimilar intermediate lobe elements characteristic of mature and immature cells found in the adult and embryonic central nervous system and ganglia. In this study the elements are referred to as non-secretory neuronal elements. The elements, forming part of the parenchyma, have multiple processes which distribute themselves throughout the lobe. The typical secretory intermediate lobe cells have only a slight affinity for the Bodian stain. The intermediate lobe basophilic staining secretory cells and the neuronal elements maintain their general differences in appearance and possibly their function. Since the intermediate lobe in bovine is rather avascular and neuronal elements are usually associated with blood vessels, these elements may be involved in certain mechanisms yet unknown. It is possible that the elements provide common precursor proteins that reach the secretory intermediate lobe cells through their dendritic branches. In addition, the non-secretory neuronal elements may be directly involved in the spike potentials recorded from the lobe as well as in stimulus-secretion coupling. This study does not treat the function of the neural elements at this time, but directs attention strictly to their presence in the intermediate lobe of the bovine pituitary gland.
采用改良的博迪安染色法，通过光学显微镜对牛垂体中间叶进行了研究。该研究揭示了许多不同的中间叶成分，这些成分是在成年和胚胎中枢神经系统及神经节中发现的成熟和未成熟细胞所特有的。在本研究中，这些成分被称为非分泌性神经元成分。这些成分作为实质的一部分，具有多个突起，它们分布于整个叶。典型的分泌性中间叶细胞对博迪安染色只有轻微的亲和力。中间叶嗜碱性染色的分泌细胞和神经元成分在外观上以及可能在功能上保持着总体差异。由于牛的中间叶血管相当少，而神经元成分通常与血管相关，这些成分可能参与了某些尚不清楚的机制。有可能这些成分提供了共同的前体蛋白，这些蛋白通过它们的树突分支到达分泌性中间叶细胞。此外，非分泌性神经元成分可能直接参与从叶记录到的动作电位以及刺激 - 分泌偶联过程。本研究目前不探讨神经元成分的功能，而是严格将注意力指向它们在牛垂体中间叶中的存在。
