Laboratorio de Biología de la Reproducción Animal, Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico, Mexico.
Anat Rec (Hoboken). 2011 May;294(5):893-904. doi: 10.1002/ar.21364. Epub 2011 Mar 17.
The aim of this study was to evaluate the sequence of the histological and stereological changes that occur in diverse components of left growing and right regressing ovaries of Gallus domesticus as well as the variations in the number and size of the different cell subpopulations from 8-day-old chicken embryo to 4-week-old chickens. Results indicate a bilateral asymmetry in favor of the left ovary at all ages studied. The left ovary shows cortex and medulla, but the right ovary has no cortex, only a medulla. Stereological results show in the left ovary an increase in total volume of all components of the ovarian medulla with advancing development. The right ovary follows a similar pattern until the age of 1-day-old chicken, to regress afterward, thereby, reducing the total volume of blood vessels, lacunar channels, and interstitium, but increasing the total volume of interstitial cells as development progresses; consequently, the total volume of interstitial cells is the dominant component in the right ovary of 4-week-old chickens. Results also reveal that the increase in total volume of interstitial cells in the left ovary at all ages and in the right ovary from 8-day-old chicken embryo to 1-day-old chicken is due to hyperplasia and cell hypertrophy of interstitial cells; hence, in the right ovary, cell hypertrophy is the main cause for the increase in the total volume of interstitial cells from 1-week-old to 4-week-old chickens.
本研究旨在评估不同日龄鸡胚胎至 4 周龄鸡的左生长和右退化卵巢的各种成分的组织学和体视学变化的顺序，以及不同细胞亚群的数量和大小的变化。结果表明，在所有研究的年龄中，左右卵巢存在双侧不对称性，左侧卵巢具有皮质和髓质，而右侧卵巢没有皮质，只有髓质。体视学结果显示，左侧卵巢的卵巢髓质的所有成分的总体积随着发育的进展而增加。右侧卵巢在 1 日龄鸡之前遵循类似的模式，然后退化，从而减少血管、腔隙通道和间质的总体积，但随着发育的进展，间质细胞的总体积增加；因此，间质细胞的总体积是 4 周龄鸡的右侧卵巢的主要成分。结果还表明，左侧卵巢在所有年龄和右侧卵巢从 8 日龄鸡胚胎至 1 日龄鸡的间质细胞总体积的增加是由于间质细胞的增生和细胞肥大；因此，在右侧卵巢中，细胞肥大是间质细胞总体积从 1 周到 4 周龄鸡增加的主要原因。
