Translator Disclaimer
1 January 2001 Incorporating Lipids into Boar Sperm Decreases Chilling Sensitivity but Not Capacitation Potential
Author Affiliations +
Abstract

Fresh boar sperm were incubated with small unilamellar liposomes composed of either the total lipids extracted from head plasma membranes (HPM) of fresh boar sperm or selected lipids (SL) of five defined phospholipids with specific acyl chains. To optimize fusion, liposomes with 2 mol% octadecyl rhodamine fluorophore in Beltsville Thawing Solution ± 1 mM CaCl2 were incubated at 35°C with 1 ;ts 107 or 108 spermatozoa/ml and monitored over 60 min, using flow cytometry and fluorescence microscopy. The HPM fused to both sperm concentrations faster than SL but was equivalent by 30 min (108 sperm/ml) or 60 min (107 sperm/ml; 57.5 ± 3% and 67.1 ± 8% sperm fused to HPM and SL, respectively) ± Ca2 . Neither HPM nor SL affected onset of capacitation or spontaneous or ionophore-induced acrosome reactions at 0 or 3 h (chlortetracycline and fluorescein isothiocyanate-Pisum sativum agglutinin; n = 3). During cooling and after cryopreservation (n = 4 ejaculates), SL but not HPM significantly improved sperm motility and viability (Sybr14/propidium iodide staining) ± 20% egg yolk, but egg yolk alone was more effective than SL alone. Liposomes of complex composition can fuse to boar sperm without harming in vitro capacitation or acrosome reaction and reduce sperm chilling sensitivity.

L. He, J. L. Bailey, and M. M. Buhr "Incorporating Lipids into Boar Sperm Decreases Chilling Sensitivity but Not Capacitation Potential," Biology of Reproduction 64(1), 69-79, (1 January 2001). https://doi.org/10.1095/biolreprod64.1.69
Received: 8 June 2000; Accepted: 15 August 2000; Published: 1 January 2001
JOURNAL ARTICLE
11 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top