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Related Concept Videos

Sperm Structure and Semen Composition01:22

Sperm Structure and Semen Composition

During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
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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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Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts
09:35

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Canine sperm vitrification with sucrose: effect on sperm function.

R Sánchez1, J Risopatrón, M Schulz

  • 1BIOREN-CEBIOR, Universidad de La Frontera, Temuco, Chile.  rsanchez@ufro.cl

Andrologia
|April 14, 2011
PubMed
Summary
This summary is machine-generated.

Sucrose effectively protects canine sperm during ultra-rapid cryopreservation, preserving mitochondrial function and DNA integrity. This non-permeable cryoprotectant enhances sperm motility and viability post-thaw.

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Last Updated: Jun 2, 2026

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Published on: December 12, 2011

Area of Science:

  • Reproductive Biology
  • Cryobiology
  • Animal Science

Background:

  • Cryopreservation of canine spermatozoa is crucial for genetic preservation.
  • Ultra-rapid cryopreservation methods require effective cryoprotective agents.
  • Sucrose is a non-permeable cryoprotectant with potential for sperm preservation.

Purpose of the Study:

  • To investigate the efficacy of sucrose in protecting canine spermatozoa during ultra-rapid cryopreservation.
  • To evaluate the effects of different sucrose concentrations on sperm motility, mitochondrial membrane potential, and DNA fragmentation.
  • To assess sucrose's impact on artificial acrosome reaction post-cryopreservation.

Main Methods:

  • Swim-up selected canine spermatozoa were vitrified using varying sucrose concentrations (0.1, 0.25, 0.4 M) with HTF-BSA 1%.
  • Sperm samples were subjected to ultra-rapid freezing by direct drop into liquid nitrogen.
  • Post-thawing, sperm motility, mitochondrial membrane potential, DNA fragmentation, and acrosome reaction were assessed.

Main Results:

  • A 0.25 M sucrose concentration significantly increased progressively motile spermatozoa compared to controls (42.5% vs 1.66%).
  • Sucrose at 0.25 M demonstrated a stronger cryoprotective effect on mitochondrial membrane potential and reduced DNA fragmentation.
  • No significant differences were observed in the artificial acrosome reaction rates between groups.

Conclusions:

  • Sucrose, particularly at 0.25 M, is an effective non-permeable cryoprotectant for ultra-rapid canine sperm cryopreservation.
  • Sucrose preserves key physiological parameters including mitochondrial membrane potential and DNA integrity.
  • This study highlights sucrose's potential for improving canine sperm cryobanking outcomes.