MORPHOMETRIC CATEGORIZATION OF THE HUMAN OOCYTE AND EARLY CONCEPTUS

被引：27

作者：

GOYANES, VJ

RONCORZO, A

COSTAS, E

MANEIRO, E

机构：

[1] Unit of Human Reproduction, Clinica Ntra. Sra. de Belen

来源：

HUMAN REPRODUCTION | 1990年 / 5卷 / 05期

关键词：

Adimensional coefficients; Human embryo; Morphometry; Volume;

D O I：

10.1093/oxfordjournals.humrep.a137155

中图分类号：

R71 [妇产科学];

学科分类号：

100211 ;

摘要：

Morphometrical procedures were used to quantitatively evaluate human oocytes and embryos in an IVF programme. The metaphase II oocyte was an irregular 3.5 × 106 μm3 sphere of 1.05 coefficient of form. The ooplasmic volume of 1.4 × 10 6 μm3 was reduced by 10% by fertilization. The zona pellucida behaved as a stable and almost spherical envelope of 1.8 × 106 /m3 volume and 17 μm thickness. Through the first three cleavages, mean blastomere reduces 28.5% volume per division, evolving from an irregular spherical shape with 0.9 coefficient of form to an ellipsoid (0.8) at the 8-cell stage. The coefficient of diversity between sister blastomeres progressively moved from 1.4 to 1.6 during the first two (2n) cleavages. The coefficient of diversity also increased at 3-cell (2.2) and 6-cell (2.6) asynchronous divisions. Morphologically abnormal embryos showed some morphometrical differences. Embryos which successfully implanted and progressed to birth showed a higher coefficient of diversity between sister blastomeres. © 1990 Oxford University Press.

引用

页码：613 / 618

页数：6

共 29 条

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