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Related Concept Videos

Spermatogenesis01:41

Spermatogenesis

120.6K
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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Spermatogenesis01:22

Spermatogenesis

8.5K
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.
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
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Meiosis vs. Mitosis02:57

Meiosis vs. Mitosis

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Cell division is necessary for growth and reproduction in organisms. Mitosis aids cell growth and development by dividing somatic cells. In contrast, meiosis causes the division of germ cells and plays an essential role in sexual reproduction. Due to their unique functional requirements, mitosis and meiosis differ from each other in multiple aspects.
Before the start of mitosis and meiosis I, the cell synthesizes DNA, resulting in two homologous copies of each chromosome. DNA synthesis is...
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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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Overview of DNA Repair02:25

Overview of DNA Repair

33.2K
In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
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Meiosis I03:09

Meiosis I

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Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
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Related Experiment Video

Updated: Dec 23, 2025

Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
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Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects

Published on: April 21, 2022

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How defective spermatogenesis affects sperm DNA integrity.

Manish Kuchakulla1, Manish Narasimman1, Kajal Khodamoradi1

  • 1Department of Urology, Miller School of Medicine, University of Miami, Miami, FL, USA.

Andrologia
|April 24, 2020
PubMed
Summary
This summary is machine-generated.

Spermatogenesis, crucial for male fertility, involves complex cellular processes. This review details sperm development, DNA damage causes, and repair mechanisms, highlighting impacts on fertility.

Keywords:
chromatin remodellingsperm DNA damagesperm DNA repair mechanismsspermatogenesisspermatogenesis regulation

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Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
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Area of Science:

  • Reproductive biology and genetics
  • Molecular and cellular biology

Background:

  • Spermatogenesis is vital for male fertility, involving intricate cellular regulation.
  • Reduced sperm DNA integrity negatively affects fertility.
  • Sperm DNA damage stems from replication errors, apoptosis, and oxidative stress.

Purpose of the Study:

  • To review the multifaceted process of spermatogenesis.
  • To outline sperm differentiation and regulatory mechanisms.
  • To cover sperm DNA damage and repair pathways.

Main Methods:

  • Literature review of spermatogenesis.
  • Analysis of regulatory elements in sperm development.
  • Examination of DNA damage and repair mechanisms.

Main Results:

  • Spermatogenesis is a complex, multi-step process essential for fertility.
  • Various factors contribute to sperm DNA damage, impacting reproductive health.
  • Current research focuses on understanding and addressing DNA repair in spermatozoa.

Conclusions:

  • Understanding spermatogenesis and its regulatory pathways is key to male reproductive health.
  • Identifying sources of sperm DNA damage is crucial for fertility treatments.
  • Further research into DNA repair mechanisms may offer therapeutic targets.