McNulty J A, Cole A A, Fox L M
Department of Anatomy, Loyola University Stritch School of Medicine, Maywood, IL 60153.
Neurosci Lett. 1988 Aug 1;90(3):254-8. doi: 10.1016/0304-3940(88)90198-x.
Acid phosphatase (ACP) activity was investigated in the photoreceptive pineal gland of the goldfish by both light and electron microscopy. Intraluminal macrophages exhibited the greatest ACP reactivity that was generally confined to lysosomal bodies containing membranous debris. Quantitative light microscopic evaluation revealed significantly higher ACP reactivity in animals collected at mid-light compared to those collected at mid-dark suggesting that functional activities of macrophages in this photoneuroendocrine organ are cyclical over the 24-h photoperiod. Day-night differences in macrophage ACP activity may reflect rhythmic renewal and shedding of photoreceptor outer segment membranes.
通过光学显微镜和电子显微镜对金鱼光感受性松果体中的酸性磷酸酶（ACP）活性进行了研究。管腔内巨噬细胞表现出最强的ACP反应性，这种反应性通常局限于含有膜碎片的溶酶体。定量光学显微镜评估显示，与在暗光期采集的动物相比，在光期中期采集的动物的ACP反应性显著更高，这表明该光神经内分泌器官中巨噬细胞的功能活动在24小时光周期内呈周期性变化。巨噬细胞ACP活性的昼夜差异可能反映了光感受器外段膜的节律性更新和脱落。
