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Related Concept Videos

Spermatogenesis01:41

Spermatogenesis

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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
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Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
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Testosterone: Functions and Regulation01:26

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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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Sperm Transport01:15

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The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
The maturation phase occurs in the epididymis, where sperm...
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Fertilization01:38

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During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
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Infertility in Males01:23

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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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[Stimulation of spermatogenesis: For whom? Why? How?].

J Bertrand-Delepine1, C Leroy2, J-M Rigot3

  • 1Service de gynécologie endocrinienne et médecine de la reproduction, hôpital Jeanne-de-Flandre, CHRU de Lille, avenue Eugène-Avinée, 59037 Lille cedex, France; Service d'andrologie, hôpital Albert-Calmette, CHRU de Lille, boulevard du Professeur-Jules-Leclercq, 59000 Lille cedex, France.

Gynecologie, Obstetrique & Fertilite
|August 1, 2016
PubMed
Summary

Stimulating spermatogenesis with treatments like gonadotrophins (rFSH/hCG) or pulsatile GnRH therapy can effectively treat male hypogonadotropic-hypogonadism infertility. This approach often leads to semen improvement and successful pregnancies, though treatment duration can be lengthy.

Keywords:
Citrate de clomifèneClomifene citrateGonadotrophinesGonadotropinsHypogonadisme hypogonadotropeHypogonadotropic-hypogonadismInfertilité masculineMale infertilityPompe à GnRHPulsatile GnRH therapyStimulation de la spermatogenèseStimulation of spermatogenesis

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Area of Science:

  • Reproductive Medicine
  • Endocrinology
  • Male Infertility

Background:

  • Male hypogonadotropic-hypogonadism is a significant cause of infertility.
  • Stimulating spermatogenesis offers a primary treatment option for this condition.
  • Existing treatments can yield positive outcomes, including semen quality improvements and spontaneous pregnancies.

Purpose of the Study:

  • To review various protocols for stimulating spermatogenesis.
  • To analyze the efficacy and outcomes of these stimulation protocols.
  • To explore potential alternative indications for spermatogenesis stimulation.

Main Methods:

  • Review of literature on spermatogenesis stimulation protocols.
  • Analysis of treatment outcomes, including semen parameters and pregnancy rates.
  • Comparison of different therapeutic agents such as gonadotrophins (rFSH, hCG), pulsatile GnRH, and clomifene citrate.

Main Results:

  • Spermatogenesis stimulation, particularly with gonadotrophins, can lead to significant semen improvements.
  • While treatment duration is often long (months), successful pregnancies have been reported.
  • Therapeutic interventions can also enhance the technical aspects of Intracytoplasmic Sperm Injection (ICSI).

Conclusions:

  • Spermatogenesis stimulation is a valuable treatment for male hypogonadotropic-hypogonadism.
  • Various protocols exist, with gonadotrophins being commonly used.
  • Further research may identify new applications for these stimulation strategies.