Spatial distribution of preantral follicles in ovarian parenchyma of bovine species.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-04-01 DOI:10.1017/S0967199423000023

Suellen Miguez González, Marcela Bortoletto Cerezetti, Larissa Zamparone Bergamo, Fábio Morotti, Marcelo Marcondes Seneda

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Abstract

The goal of this study was to determine the distribution of preantral follicles in bovine ovaries. Follicular distribution in the ovaries (n = 12) was evaluated in the region of the greater curvature of the ovary (GCO) and the region close to the ovarian pedicle (OP) of Bos taurus indicus heifers of the Nelore breed. Two fragments were obtained from each region of the ovary (GCO and OP). The mean weight of the ovaries was 4.04 ± 0.32 g. The mean antral follicle count (AFC) was 54.58 ± 3.55 follicles (minimum and maximum variation of 30 and 71 follicles, respectively). In total, 1123 follicles were visualized in the region of the GCO; 949 (84.5%) of them were primordial follicles and 174 (15.5%) were developing follicles. The region close to the OP contained 1454 follicles, of which 1266 (87%) were primordial follicles and 44 (12.9%) were developing follicles. The OP region showed a higher proportion of intact follicles in the primordial (P < 0.0001) and primary (P = 0.042) stages compared with the GCO region. The proportion of secondary follicles was similar in the OP and GCO regions. The ovaries of two bovine females (16%; 2/12) contained multi-oocytes follicles, which were characterized as primary follicles. Therefore, the distribution of preantral follicles in the bovine ovary was heterogeneous, with the region close to the OP containing a greater number of preantral follicles compared with the GCO region (P < 0.05).

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牛卵巢实质腔前卵泡的空间分布。

本研究的目的是确定牛卵巢腔前卵泡的分布。研究了母牛卵巢大曲率区域(GCO)和靠近卵巢蒂区域(OP)的卵泡分布(n = 12)。分别从卵巢各区域(GCO和OP)获得2个片段。卵巢平均重量为4.04±0.32 g。平均腔内卵泡计数(AFC)为54.58±3.55个卵泡(最小值为30个，最大值为71个)。在GCO区域共可见1123个卵泡;其中原始卵泡949个(84.5%)，发育卵泡174个(15.5%)。靠近OP区域有1454个卵泡，其中1266个(87%)为原始卵泡，44个(12.9%)为发育卵泡。与GCO区相比，OP区原发期(P < 0.0001)和原发期(P = 0.042)完整卵泡的比例更高。继发卵泡的比例在OP区和GCO区相似。两只雌性牛的卵巢(16%;2/12)含有多个卵母细胞卵泡，特征为原发性卵泡。因此，牛卵巢的腔前卵泡分布具有异质性，靠近OP的区域比GCO区域含有更多的腔前卵泡(P < 0.05)。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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