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本文描述了过热大鼠神经垂体的超微结构变化。在过热情况下,神经分泌纤维各亚型膨体的数量和超微结构变化明显。典型的含有大量神经分泌颗粒的膨体较正常情况明显减少,而含有许多溶酶体或大空泡的膨体则较多见。一些变性的膨体为垂体细胞胞浆所包裹。偶见坏死垂体细胞。上述超微结构变化似主要为垂体分泌系统在超负荷情况下功能亢进所致。
This article describes the ultrastructural changes of the neurohypophysis in overheated rats. In the case of overheating, the number and ultrastructural changes of various subtypes of neurosecretory fibers are obvious. The typical bulge containing a large number of neurosecretory particles significantly reduced compared with normal conditions, and contains many lysosomes or large vacuoles are more common. Some of the denatured bulge pituitary cells surrounded by cytoplasm. Occasionally necrotic pituitary cells. The ultrastructural changes like the pituitary secretion system mainly due to hyperthyroidism overload.