相关实验视频
Updated: Jun 11, 2025

09:09
Gene Expression Analyses in Human Follicles
Published on: February 17, 2023
1.1K
对人类卵巢中排卵过程的新见解
Misung Jo1, Mats Brännström2,3, James W Akins4
1Department of Obstetrics and Gynecology, University of Kentucky College of Medicine, Lexington, KY, USA.
Human reproduction update
|September 27, 2024
概括
了解人类的排卵是生育的关键. 使用人体样本和体外模型的研究揭示了排卵因子及其调节,有助于诊断和治疗不孕症.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 排卵的细胞和分子机制.
背景情况:
- 排卵对于自然受孕和生育能力至关重要.
- 排卵的缺陷有助于女性的不孕不育和不孕不育.
- 与动物模型相比,由于样本的可用性,对人类的卵巢内生化机制的理解是有限的.
研究的目的:
- 审查体内和体外人类排卵模型的发现.
- 提供对人类排卵机制的新见解.
- 为了突出排卵过程中的特定物种差异.
主要方法:
- 使用PubMed的文献综述使用了诸如"人类排卵EGF信号"",类固醇生成"",转录因子"",前列腺素"",蛋白酶"",血管生成"",化学因子"",排卵障碍"",颗粒状细胞培养"等术语.
- 对作者数据与现有的人类,子和小鼠卵巢细胞微阵列/RNA-seq数据集进行比较.
- 使用体外模型研究LH激增或hCG管理引起的变化.
主要成果:
- 在人类中,LH激增或hCG的管理可调节卵巢介质 (EGF类因子,类固醇,转录因子,前列腺素,蛋白质酶),类似于动物模型.
- 特定的排卵因子,它们的表达模式和调节机制显示出特定物种的变化.
- 人体样本对于界定特定物种的排卵机制至关重要.
结论:
- 人类排卵模型正在改善对排卵过程的理解.
- 需要进一步的研究来确定新的排卵因子.
- 改进的体外模型模仿体内条件至关重要.
- 获得的知识可以帮助诊断排卵障碍,开发不孕症治疗方法和改善避孕措施.
相关概念视频
Ovarian Cycle
1.1K
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...
1.1K
Oogenesis
1.2K
Oogenesis, the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is...
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is...
1.2K
Hormonal Control of the Ovarian Cycle
438
The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
438
Folliculogenesis
638
Folliculogenesis is the development of ovarian follicles, the specialized structures within the ovarian cortex where oogenesis, or egg development, occurs. This process is essential for female reproductive health and begins during fetal development when primordial follicles are formed. Each primordial follicle comprises a primary oocyte in the center, surrounded by a single layer of squamous pre-granulosa cells. These follicles remain dormant in late prophase I of meiosis until triggered by...
638
Hormonal Regulation of the Menstrual Cycle
312
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...
312
Ovaries
720
The ovaries are roughly the size of almonds and measure approximately 2 to 3 centimeters in length. These paired structures are situated within the pelvic region and are anchored by the mesovarium—a peritoneal extension that also connects them to the wider structure of the broad ligament. The support system extends to the suspensory ligament, housing blood and lymphatic vessels. In addition, the ovarian ligament tethers the ovaries to the uterus.
On the ovarian surface, a layer of...
On the ovarian surface, a layer of...
720

