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Membrane Lipids of the Stallion Spermatozoon in Relation to Sperm Quality and Susceptibility to Lipid Peroxidation
Veterinary Teaching Hospital, Laboratory of Spermatology, University of Extremadura, Cáceres, Spain.
Department of Physiology, University of Extremadura, Avd de la Universidad s/n, Cáceres, Spain.
Veterinary Teaching Hospital, Laboratory of Spermatology, University of Extremadura, Cáceres, Spain.
Veterinary Teaching Hospital, Laboratory of Spermatology, University of Extremadura, Cáceres, Spain.
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2011 (English)In: Reproduction in domestic animals, ISSN 0936-6768, E-ISSN 1439-0531, Vol. 46, no 1, 141-148 p.Article in journal (Refereed) Published
Abstract [en]

Contents: Lipids were extracted from ejaculated spermatozoa from seven individual stallions to distinguish neutral lipids (NL) and polar lipids (PL) and determine their variation among stallions and their relationship with sperm quality and sperm susceptibility to lipid peroxidation. The isolated fatty acids were correlated with sperm quality (membrane integrity, mitochondrial membrane potential (ΔΨm) and expression of active caspases) and the sensitivity of the sperm plasma membrane to LPO. The miristic (C14: 0), palmitic (C16: 0), stearic (C18: 0) and oleic (C18: 1n9) acids were predominant among the NLs. Within the phospholipid fraction, the docosapentanoic acid (C22: 5n6) was dominant, albeit varying among stallions. Surprisingly, the percentage of polyunsaturated fatty acids was positively correlated with sperm quality and a low propensity for LPO, probably because these particular fatty acids provide a higher fluidity of the plasma membrane. The stallion showing the poorest sperm membrane integrity plus a high level of LPO in his ejaculate had a lower percentage (p less than 0.05) of this fatty acid in his sperm plasma membranes. © 2010 Blackwell Verlag GmbH.

Place, publisher, year, edition, pages
Blackwell Publishing , 2011. Vol. 46, no 1, 141-148 p.
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Natural Sciences
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URN: urn:nbn:se:liu:diva-75529DOI: 10.1111/j.1439-0531.2010.01609.xOAI: oai:DiVA.org:liu-75529DiVA: diva2:508076
Available from: 2012-03-07 Created: 2012-03-06 Last updated: 2017-12-07

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Rodriguez-Martinez, Heriberto

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