相关实验视频
Updated: Feb 17, 2026

08:20
A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome
Published on: October 2, 2018
12.0K
从婴儿期到整个儿童和成年期为11氧化的年龄和性别特定的参考间隔
Robert Zeidler1, Friederike Wagner2, Uta Ceglarek1
1Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Leipzig University, Leipzig, Germany.
Clinical chemistry and laboratory medicine
|February 16, 2026
概括
这项研究为11氧化 (11-OA) 建立了关键的年龄,性别和青春期特定的参考间隔. 这些参考间隔有助于诊断雄激素过量的情况,特别是在小青春期.
科学领域:
- 内分泌学 在内分泌学.
- 雄激素代谢 雄激素代谢
- 儿科内分泌学 儿科内分泌学
背景情况:
- 11-氧化 (11-OA),包括11-基托 (11-KT),主要由上腺产生.
- 11-OA对于区分上腺和额外上腺激素来源有价值.
- 11-OA的临床实用性受到缺乏全面的年龄和性别特定参考间隔 (RIs) 的阻碍.
研究的目的:
- 为关键11-OA建立可靠的年龄,性别和青春期依赖的参考间隔.
- 为了促进在各种生理和病理状态下准确的临床解释11-OA水平.
主要方法:
- 同时量化11-OHA4,11-OHT,11-KA4,11-KT和其他类固醇使用LC-MS/MS.
- 分析了来自2,505名健康个体的3,796个血清样本,年龄在0.25至80岁之间.
- 包括婴儿,童年,迷你青春期和成年期的个体,涵盖各种青春期阶段.
主要成果:
- 血清11-OA水平从婴儿期到成年期逐渐增加,在青春期显著增加.
- 在11-OA水平中发现了显著的性别特异性差异,导致建立了年龄,性别和青春期依赖的RI.
- 与丸激素不同的是,11-OA在生命的第一年显示出两性同样的模式,与3个月和6个月的男性丸激素没有相关性.
结论:
- 已建立的11-OA的RI对于解释临床环境中的11-OA测量是必不可少的,特别是在雄激素过量的疾病中.
- 显著的调节模式的11-OAs与经典的雄激素在迷你青春期表明,下丘脑-垂体-腺轴驱动早期上升的雄激素.
相关概念视频
Signs of Puberty
1.6K
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
1.6K
Testosterone: Functions and Regulation
2.4K
The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
2.4K
Menopause
5.0K
Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
5.0K
Gonadal and Placental Hormones
3.3K
The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
3.3K
Oxygen Requirements and Growth Patterns
1.6K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.6K
Oogenesis
70.3K
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...
70.3K

