THE POSTNATAL-DEVELOPMENT OF MASERA ORGAN IN THE RAT
THE POSTNATAL-DEVELOPMENT OF MASERA ORGAN IN THE RAT
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DOI：
10.1093/chemse/14.5.649
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发表时间：
1989-10-01
期刊：
影响因子：
3.5
通讯作者：
WALKER, DG
中科院分区：
文献类型：
--
作者：
BREIPOHL, W;NAGURO, T;WALKER, DG
对大鼠马塞拉‘S器官(MO)的生长和生后超微结构发育进行了研究。与鼻中隔的嗅觉上皮(OEP)一样，在出生的前3周，MO覆盖的面积增加。鼻中隔MO面积的增加率与OEP的增加率相同。随着MO总面积的增加，MO的游离神经上皮表面的复杂性也随之增加。受体细胞的感觉纤毛数和支持细胞的微绒毛数目均增加。在第14天和之后，感觉纤毛的进一步特征是近端较厚，远端较薄，并在游离上皮面呈平行方向。呼吸上皮和MO之间的过渡区在出生后第一周表现出额外的发育特征。这一结果表明，至少在断奶之前，MO在出生时发育不完全，形态正在成熟。因此，我们得出的结论是，MO不是残留的，而是具有超越断奶的功能。
Growth and fine-structural postnatal development of Masera''s organ (MO) in the rat was studied. As with the olfactory epithelium proper (OEP) on the nasal septum, the area covered by MO increases during the first 3 weeks of life. The rate of increase in area of MO is the same as for the OEP on the nasal septum. Concomitant with the increase in overall area of MO, the complexity of the free neuroepithelial surface of MO increases. There is an increase in both the number of sensory cilia of receptor cells and microvilli of supporting cells. At 14 days and after sensory cilia are further characterized by the development of a thicker proximal and thinner distal part, and a parallel orientation at the free epithelial surface. The transition zone between the respiratory epithelium and the MO demonstrates additional developmental features during the first postnatal week. The results are suggestive of incomplete development of MO at birth and ongoing morphological maturation at least up to weaning. We conclude therefore that MO is not vestigial but is functional beyond weaning.