Joy K P, Sathyanesan A G
J Neural Transm. 1976;39(1-2):47-61. doi: 10.1007/BF01248765.
Varying degrees of monoamine oxidase (MAO) activity were noticed all along the hypothalamo-hypophyseal neurosecretory tract in C. batrachus. Intense activity was evident on the wall of the secretory cells of the adenohypophysis, neurons of the nucleus preopticus (NPO) and nucleus lateralis tuberis (NLT). However, MAO activity was also observed in the cytoplasm of some neurons in the ventromedian region of the NLT and groups of cells present in the neurohypophyseal ramifications of the pars intermedia. A strong accumulation of formazan granules in the median eminence (ME) and the neuroadeno interface lends further support to the view that C. batrachus has a ME of both the tetrapodan and the teleostean type. The distributional pattern of MAO in the hypothalamus and hypophysis suggests that monoaminergic fibres are probably involved in the secretory mechanism of the releasing factors and pituitary hormones.
在牛蛙中，沿着下丘脑 - 垂体神经分泌束均观察到不同程度的单胺氧化酶（MAO）活性。在腺垂体分泌细胞的壁、视前核（NPO）和外侧结节核（NLT）的神经元上，MAO活性强烈。然而，在NLT腹内侧区域的一些神经元的细胞质以及中间部神经垂体分支中存在的细胞群中也观察到了MAO活性。在正中隆起（ME）和神经 - 腺接口处甲臜颗粒的强烈积累进一步支持了牛蛙具有四足动物和硬骨鱼类两种类型正中隆起的观点。MAO在下丘脑和垂体中的分布模式表明，单胺能纤维可能参与释放因子和垂体激素的分泌机制。
