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Effect of Cryopreservation on the Sperm DNA Fragmentation Dynamics of the Bottlenose Dolphin (Tursiops truncatus)

Overview of attention for article published in Reproduction in Domestic Animals, January 2015
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Title
Effect of Cryopreservation on the Sperm DNA Fragmentation Dynamics of the Bottlenose Dolphin (Tursiops truncatus)
Published in
Reproduction in Domestic Animals, January 2015
DOI 10.1111/rda.12474
Pubmed ID
Authors

MJ Sánchez‐Calabuig, C López‐Fernández, SD Johnston, D Blyde, J Cooper, K Harrison, J de la Fuente, J Gosálvez

Abstract

Sperm DNA fragmentation is one of the major causes of infertility; the sperm chromatin dispersion test (SCDt) evaluates this parameter and offers the advantage of species-specific validated protocol and ease of use under field conditions. The main purpose of this study was to evaluate sperm DNA fragmentation dynamics in both fresh and post-thaw bottlenose dolphin sperm using the SCDt following different cryopreservation protocols to gain new information about the post-thaw differential sperm DNA longevity in this species. Fresh and cryopreserved semen samples from five bottlenose dolphins were examined for sperm DNA fragmentation dynamics using the SCDt (Halomax(®) ). Sperm DNA fragmentation was assessed immediately at collection and following cryopreservation (T0) and then after 0.5, 1, 4, 8, 24, 48 and 72 h incubation at 37°C. Serially collected ejaculates from four dolphins were frozen using different cryopreservation protocols in a TES-TRIS-fructose buffer (TTF), an egg-yolk-free vegetable lipid LP1 buffer (LP1) and human sperm preservation medium (HSPM). Fresh ejaculated spermatozoa initially showed low levels of DNA fragmentation for up to 48 h. Lower Sperm DNA fragmentation (SDF) was found in the second fresh ejaculate compared to the first when more than one sample was collected on the same day (p < 0.05); this difference was not apparent in any other seminal characteristic. While there was no difference observed in SDF between fresh and frozen-thawed sperm using the different cryopreservation protocols immediately after thawing (T0), frozen-thawed spermatozoa incubated at 37°C showed an increase in the rate of SDF after 24 h. Sperm frozen in the LP1(℗) buffer had higher levels (p < 0.05) of DNA fragmentation after 24- and 48-h incubation than those frozen in TTF or HSPM. No correlation was found between any seminal characteristic and DNA fragmentation in either fresh and/or frozen-thawed samples.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 36 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
South Africa 1 3%
Unknown 35 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 6 17%
Student > Master 6 17%
Student > Ph. D. Student 4 11%
Professor 4 11%
Student > Doctoral Student 3 8%
Other 6 17%
Unknown 7 19%
Readers by discipline Count As %
Agricultural and Biological Sciences 14 39%
Veterinary Science and Veterinary Medicine 5 14%
Medicine and Dentistry 3 8%
Biochemistry, Genetics and Molecular Biology 2 6%
Computer Science 1 3%
Other 1 3%
Unknown 10 28%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 January 2015.
All research outputs
#21,944,226
of 24,484,013 outputs
Outputs from Reproduction in Domestic Animals
#629
of 1,069 outputs
Outputs of similar age
#307,939
of 361,125 outputs
Outputs of similar age from Reproduction in Domestic Animals
#10
of 19 outputs
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