相关实验视频

Updated: Jul 22, 2025

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

Published on: September 16, 2021

一个随机对照干预试验,使用达纳佐尔来改善卵巢储量减少的妇女的端粒和生育指标:试点研究

Isabel Córdova-Oriz¹, Graciela Kohls², Carlos Iglesias²

¹The Health Research Institute La Fe (IIS La Fe), IVI Foundation, Valencia, Spain.

Women's health reports (New Rochelle, N.Y.)

|July 21, 2023

概括

达纳治疗可以通过影响卵巢衰竭妇女的端粒维持来改善试管婴儿的结果. 这项研究观察到端粒重复含有RNA (TERRA) 焦点的变化,以及治疗后更好的MII卵细胞率.

科学领域:

生殖内分泌学生殖内分泌学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

卵巢衰竭 (OF) 是体外受精 (IVF) 中的一个关键挑战,通常与短端粒和颗粒细胞中端粒酶活性降低有关.
端粒长度对细胞功能至关重要,其消耗会影响器官健康,包括卵巢功能.
性类固醇可以促进端粒酶基因表达,提供一种潜在的策略来抵消端粒缩短.

研究的目的:

调查性类固醇达纳佐尔 (Danazol) 对卵巢储备减少的妇女的端粒维护和试管婴儿参数的影响.
探索端粒酶激活作为一种治疗方法,以提高试管婴儿成功率.

主要方法:

一项双盲,安慰剂控制的研究,涉及3个月随机分配给Danazol或安慰剂的卵巢储备减少的患者.
包括正常的卵巢储备患者作为未经治疗的对照.
测定端粒长度,端粒重复含有RNA (TERRA) 焦点和体外受精 (IVF) 参数,包括卵巢刺激 (OSs).

主要成果:

达纳治疗没有改变平均端粒长度或短/长端粒的分布.
在Danazol治疗后,观察到具有1个TERRA焦点的细胞的显著减少和具有2-4个TERRA焦点的细胞的增加.
在毛囊数量上没有发现差异,但与基线相比,达纳佐尔治疗的患者在试验后表现出改善的MII卵细胞率.

结论:

达纳治疗似乎影响端粒维持,由TERRA焦点的变化和改善的MII卵细胞率证明.
这些发现表明达纳在改善试管婴儿结果方面可能发挥作用,可能是通过与端粒相关的机制.
需要进一步的研究来验证这些初步结果,并阐明具体的机制.

关键词:

门,就是一个门.达纳佐尔 (Danazol) 是一种这就是PBMCs.在地球上,地球是地球.生育能力生育能力生育能力生育能力端粒是什么意思端粒是什么意思

更多相关视频

Z-Scores for Assessing Ovarian Reserve in Young Patients Undergoing Fertility Preservation

Z-Scores for Assessing Ovarian Reserve in Young Patients Undergoing Fertility Preservation

Published on: October 25, 2024

Fertility Sparing Procedure using Carbon Dioxide Fiber Laser Vaporization of Ovarian Endometrioma

Fertility Sparing Procedure using Carbon Dioxide Fiber Laser Vaporization of Ovarian Endometrioma

Published on: July 6, 2022

相关概念视频

Oogenesis

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...

Infertility in Females

Infertility in Females

Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of...

Hormonal Control of the Ovarian Cycle

Hormonal Control of the Ovarian Cycle

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...