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相关概念视频

Signs of Puberty01:27

Signs of Puberty

337
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)...
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Development of the Sexual Organs in the Embryo and Fetus01:15

Development of the Sexual Organs in the Embryo and Fetus

682
Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...
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The Y Chromosome Determines Maleness02:19

The Y Chromosome Determines Maleness

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The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size....
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Infertility in Males01:23

Infertility in Males

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Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
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Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

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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...
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Sex-linked Disorders01:43

Sex-linked Disorders

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Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
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相关实验视频

Updated: Jun 29, 2025

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

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密码性和青春期的发生

Wiwat Rodprasert1, Helena E Virtanen1, Jorma Toppari1,2,3,4

  • 1Research Centre for Integrative Physiology and Pharmacology and Centre for Population Health Research, Institute of Biomedicine, University of Turku, Turku, Finland.

Frontiers in endocrinology
|March 27, 2024
PubMed
概括
此摘要是机器生成的。

患有先天性密码症的男孩通常会经历正常的青春期时间. 然而,丸功能受损,特别是在双边情况下,可能会发生,而莱迪格细胞功能在很大程度上不受影响.

关键词:
莱迪格细胞是莱迪格细胞.塞尔托利细胞是什么?细菌细胞的细菌细胞是什么丸的大小 丸的大小测试剂 测试剂 测试剂 测试剂没有下降的丸.

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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome
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Rodent Estrous Cycle Monitoring Utilizing Vaginal Lavage: No Such Thing As a Normal Cycle
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相关实验视频

Last Updated: Jun 29, 2025

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats

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A Hyperandrogenic Mouse Model to Study Polycystic Ovary Syndrome

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科学领域:

  • 儿科内分泌学 儿科内分泌学
  • 泌尿器科 泌尿器科 泌尿器科 泌尿器科
  • 生殖医学 生殖医学

背景情况:

  • 阴囊症,丸下降的失败,是男性新生儿常见的先天性异常.
  • 它与不孕症和丸生殖细胞瘤的风险增加有关.
  • 对于密码症的青春期发育数据,特别是获得的形式,仍然有限.

研究的目的:

  • 审查有关非综合征性密封性 (先天性和获得性) 病史的男孩青春期发育的现有数据.
  • 专注于青春期的时间,身体变化,丸生长和内分泌发育.

主要方法:

  • 现有研究的文献综述关于青春期的进展在男孩与密症.
  • 分析有关青春期的时间,身体成熟,丸大小和荷尔蒙特征的数据.

主要成果:

  • 在患有先天性密码体的男孩中,青春期的开始通常与非密码体男孩相匹配.
  • 观察到下丘脑-垂体-淋巴腺轴功能受损,塞尔托利细胞和/或生殖细胞减少,特别是在用orchiopexy治疗的双边密码症中.
  • 莱迪格细胞功能通常不会受到密码体病史的影响.

结论:

  • 先天性密码症不会改变青春期的时间,但可能与特定的丸内分泌和细胞功能障碍有关.
  • 关于青春期发育的获得性密码症缺乏足够的数据,需要进一步的研究.
  • 长期监测生殖健康和瘤监测对于有密码体病史的人来说至关重要.