相关实验视频
Updated: Jul 12, 2025

07:07
Lung microRNA Profiling Across the Estrous Cycle in Ozone-exposed Mice
Published on: January 7, 2019
6.2K
当LH被添加到卵巢刺激协议时,母亲的microRNA概况发生变化:试点研究
Fani Konstantinidou1,2, Martina Placidi3, Giovanna Di Emidio3
1Department of Psychological Health and Territorial Sciences, School of Medicine and Health Sciences, "G. d'Annunzio" University of Chieti-Pescara, 66100 Chieti, Italy.
Epigenomes
|October 24, 2023
概括
这项试点研究探讨了在体外受精 (IVF) 卵巢刺激期间人类卵细胞中的microRNA (miRNA) 概况. 将黄素激素 (LH) 添加到卵泡刺激激素 (FSH) 改变了miRNA的表达,这表明LH会影响卵细胞的能力.
科学领域:
- 生殖生物学 生殖生物学
- 分子遗传学 分子遗传学
- 在体外受精 (IVF)
背景情况:
- 卵泡刺激激素 (FSH) 是IVF卵巢刺激的标准,但黄素化激素 (LH) 的使用是有争议的.
- 微RNAs (miRNAs) 是细胞功能的关键调节者,包括淋巴腺素的产生和卵泡的发育.
研究的目的:
- 调查卵巢刺激方案中的重组LH (rLH) 是否会改变人类卵细胞中的miRNA配置文件.
- 为了识别受试管婴儿期间LH联合使用影响的特定miRNA和途径.
主要方法:
- 试点研究比较了来自两个群体卵细胞中的miRNA配置文件:单独rFSH与rFSH加rLH.
- 使用预先设计的miRNA面板和实时PCR进行卵细胞分析.
主要成果:
- 与rFSH-only组相比,在rFSH加rLH组中观察到几个miRNAs的显著上调或下调.
- 功能和网络分析表明路径的差异化调制,包括与Tp53相关的生存机制,受LH存在的影响.
- 鉴定了以前涉及生殖过程的特定差异表达的miRNA (例如hsa-miR-484,hsa-miR-222).
结论:
- 在卵巢刺激期间同时服用LH似乎会调节人类卵细胞中的miRNA配置文件.
- 这些miRNA变化表明LH对卵细胞能力和潜在的IVF结果至关重要的途径产生影响.
- 对这些miRNA的进一步研究可以阐明LH的作用并改善试管婴儿临床成功.
相关概念视频
MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
Ovarian Cycle
1.3K
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
1.3K
Hormonal Regulation of the Menstrual Cycle
408
The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...
408

