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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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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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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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A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
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Purinergic Signaling in Spermatogenesis.

Nadine Mundt1,2,3, Lina Kenzler2, Marc Spehr2,3

  • 1Department of Physiology, University of California, San Francisco, San Francisco, CA, United States.

Frontiers in Endocrinology
|April 28, 2022
PubMed
Summary

Adenosine triphosphate (ATP) is vital for cellular energy and acts as an extracellular signal activating P2 receptors. This signaling is crucial for understanding male reproductive functions and spermatogenesis.

Keywords:
ATP - adenosine triphosphateP2XP2Ycalcium signalingpurinoceptorspermatogenesis

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Area of Science:

  • Cell Biology
  • Reproductive Biology
  • Neuroscience

Background:

  • Adenosine triphosphate (ATP) is the primary cellular energy source.
  • ATP also functions as an extracellular signal activating purinergic receptors (P2 family).
  • Purinergic signaling is implicated in various physiological and pathophysiological processes.

Purpose of the Study:

  • To review the role of purinergic signaling in male reproductive system functions.
  • To highlight the importance of ATP as a paracrine messenger in the testis.
  • To underscore the need for understanding purinergic signaling in spermatogenesis.

Main Methods:

  • Literature review of existing research on purinergic signaling and male reproduction.
  • Analysis of evidence implicating ATP and P2 receptors in testicular function.
  • Discussion of the role of paracrine communication in spermatogenesis.

Main Results:

  • Purinergic signaling, mediated by ATP and P2 receptors (P2X and P2Y), plays a significant role in male reproduction.
  • Spermatogenesis relies on paracrine communication due to limited testicular innervation.
  • ATP is identified as a key paracrine messenger crucial for male germ cell generation.

Conclusions:

  • Purinergic signaling is integral to male reproductive system functions.
  • Understanding ATP's role as an extracellular signal is essential for deciphering male fertility mechanisms.
  • Further research into purinergic signaling can provide mechanistic insights into spermatogenesis.