Lee M B, Bueding E, Schiller E L
J Parasitol. 1978 Apr;64(2):257-64.
The presence of 5-HT in Hymenolepis diminuta and Hymenolepis nana was detected by 2 biochemical methods and as yellow fluorescence in a histochemical method. In H. diminuta, 5-HT was found in a concentration of about 1.2 micron/g; this amount did not vary significantly in worms aged 6 to 18 days or more or in various regions of the worm. In H. nana, 5-HT was found in a concentration of about 1.8 micron/g. It was histochemically localized in H. diminuta and H. nana in a pattern similar to that of acetylcholinesterase previously described in these 2 cestodes, and it may be the opposing neuro-transmitter to acetylcholine. The lack of 5-HT in the vestigial rostellum of H. diminuta may be correlated with loss of function of this organ.
采用2种生化方法检测了微小膜壳绦虫和缩小膜壳绦虫中5-羟色胺（5-HT）的存在情况，并通过组织化学方法将其检测为黄色荧光。在微小膜壳绦虫中，5-HT的浓度约为1.2微克/克；在6至18天或更久的虫体中或虫体的不同部位，该含量无显著变化。在缩小膜壳绦虫中，5-HT的浓度约为1.8微克/克。通过组织化学方法发现，在微小膜壳绦虫和缩小膜壳绦虫中，5-HT的定位模式与先前在这两种绦虫中描述的乙酰胆碱酯酶的模式相似，它可能是与乙酰胆碱相对的神经递质。微小膜壳绦虫退化的顶突中缺乏5-HT可能与该器官功能丧失有关。
