Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/17428
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Molecular and functional characterization of voltage-gated sodium channels in human sperm

AuthorsPinto Pérez, Francisco M. CSIC ORCID; Ravina, Cristina G.; Fernández-Sánchez, Manuel; Gallardo-Castro, Manuel CSIC; Cejudo-Román, Antonio CSIC; Candenas, M. Luz CSIC ORCID
KeywordsVvoltage-gated
VGSCs
Human sperm
Issue Date16-Jul-2009
PublisherBioMed Central
CitationReproductive Biology and Endocrinology 7:71 (2009)
Abstract[Background]We have investigated the expression of voltage-gated sodium channels in human spermatozoa and characterized their role in sperm motility.
[Methods] Freshly ejaculated semen was collected from thirty normozoospermic human donors, with each donor supplying 2 different samples. Reverse transcription-polymerase chain reaction (RT-PCR) and immunofluorescence techniques were used to detect the mRNAs and proteins of interest. Sperm motility was measured by a computer-assisted sperm analysis system (CASA). Cytosolic free calcium was determined by fluorimetry in cells loaded with the fluorescent calcium indicator Fura-2.
[Results] The mRNAs that encode the different Nav alpha subunits (Nav1.1-1.9) were all expressed in capacitated human spermatozoa. The mRNAs of the auxiliary subunits beta1, beta3 and beta4 were also present. Immunofluorescence studies showed that, with the exception of Nav1.1 and Nav1.3, the Nav channel proteins were present in sperm cells and show specific and different sites of localization. Veratridine, a voltage-gated sodium channel activator, caused time- and concentration-dependent increases in progressive sperm motility. In sperm suspensions loaded with Fura-2, veratridine did not modify intracellular free calcium levels.
[Conclusion] This research shows the presence of voltage-gated sodium channels in human sperm and supports a role for these channels in the regulation of mature sperm function.
Description9 pages, 5 figures.
Publisher version (URL)http://dx.doi.org/10.1186/1477-7827-7-71
URI10261/17428
DOI10.1186/1477-7827-7-71
ISSN1477-7827
Appears in Collections:(IIQ) Artículos




Files in This Item:
File Description SizeFormat
1477-7827-7-71.pdf955,51 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

PubMed Central
Citations

14
checked on May 17, 2022

SCOPUSTM   
Citations

30
checked on May 25, 2022

WEB OF SCIENCETM
Citations

29
checked on May 26, 2022

Page view(s)

345
checked on May 26, 2022

Download(s)

164
checked on May 26, 2022

Google ScholarTM

Check

Altmetric

Dimensions


Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.