Reglödi D, Lubics A, Szelier M, Lengvári I
Department of Human Anatomy, University Medical School, Pécs, Hungary.
Acta Biol Hung. 1997;48(4):439-51.
The distribution of serotonin immunoreactive elements in the peripheral nervous system of three earthworm species (Lumbricus terrestris, Eisenia fetida and Tubifex tubifex) was studied using the peroxidase-antiperoxidase method. Most parts of the peripheral nervous system contain immunoreactive fibers. All segmental nerves as well as branches of the prostomial nerves show strong immunoreactivity. Muscles of the body wall contain serotonergic fibers, mostly between the circular and longitudinal layers. The best supplied area is the buccal musculature. All parts of the enteric nervous system contain serotonergic fibers, strongest staining was observed in the buccal and pharyngeal walls. Along the wall of the calciferous glands thin immunoreactive fibers were found. The excretory system, the metanephridial tubules also display immunoreactivity. Under the surface epithelium, a serotonergic subepidermal plexus was observed. No significant differences were observed between the species studied. On the basis of our morphological findings and functional studies performed by other authors it is suggested that serotonin plays an essential role in the function of the peripheral nervous system in Oligochaeta.
采用过氧化物酶-抗过氧化物酶法研究了三种蚯蚓（陆正蚓、赤子爱胜蚓和颤蚓）外周神经系统中5-羟色胺免疫反应性成分的分布。外周神经系统的大部分区域都含有免疫反应性纤维。所有节段神经以及口前叶神经的分支都显示出强烈的免疫反应性。体壁肌肉含有5-羟色胺能纤维，主要分布在环肌层和纵肌层之间。供应最丰富的区域是颊部肌肉组织。肠神经系统的所有部分都含有5-羟色胺能纤维，在颊壁和咽壁观察到最强的染色。沿含钙腺壁发现了细的免疫反应性纤维。排泄系统，即后肾管也显示出免疫反应性。在表面上皮下方，观察到一个5-羟色胺能的表皮下神经丛。在所研究的物种之间未观察到显著差异。根据我们的形态学发现以及其他作者进行的功能研究，表明5-羟色胺在寡毛纲动物外周神经系统的功能中起重要作用。
