Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/12311
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dc.contributor.authorSousa, Ana Paula M.-
dc.contributor.authorTavares, Renata S.-
dc.contributor.authorVelez de la Calle, Juan Felipe-
dc.contributor.authorFigueiredo, Helena-
dc.contributor.authorAlmeida, Vasco-
dc.contributor.authorAlmeida-Santos, Teresa-
dc.contributor.authorRamalho-Santos, João-
dc.date.accessioned2010-01-27T09:24:22Z-
dc.date.available2010-01-27T09:24:22Z-
dc.date.issued2009-
dc.identifier.citationHuman Reproduction. 24:1 (2009) 28-36en_US
dc.identifier.issn0268-1161-
dc.identifier.urihttps://hdl.handle.net/10316/12311-
dc.description.abstractBACKGROUND: Sperm chromatin status and nuclear DNA damage can be detected using well-established assays. However, most techniques are time-consuming and/or involve elaborate protocols and equipment. We have recently developed a simple and fast method to monitor sperm chromatin status in field conditions using the Diff-Quik assay which is employed in fertility clinics to assess sperm morphology with standard bright field microscopy. In the present study, we demonstrate that any Diff-Quik-like stain can easily, reproducibly and routinely monitor human sperm chromatin status as well. METHODS: Different Diff-Quik-like stains were used to assess sperm morphology and the presence of abnormal dark nuclear staining in human sperm from four ART centres. The TUNEL assay was performed in the same samples, and fertility outcomes were assessed. RESULTS: A significant correlation was found between TUNEL-positive sperm and dark sperm nuclei. Moreover, associations were also found between the percentage of dark sperm nuclei and seminal parameters, embryo development rate, embryo quality and clinical pregnancy, as well as with cryptorchidism, and there was a tendency towards an association with age. A value of 32% abnormal staining is suggested as a predictive threshold for embryo development and pregnancy. CONCLUSIONS: Our results show that any Diff-Quik-like stain, already implemented in most laboratories to assess sperm morphology, can be adapted as an indicator for chromatin status in human spermen_US
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.rightsopenAccessen_US
dc.subjectHuman spermen_US
dc.subjectChromatinen_US
dc.subjectNuclear DNAen_US
dc.subjectDiff-Quik stainingen_US
dc.subjectSperm morphologyen_US
dc.titleDual use of Diff-Quik-like stains for the simultaneous evaluation of human sperm morphology and chromatin statusen_US
dc.typearticleen_US
dc.identifier.doi10.1093/humrep/den365-
item.openairetypearticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.fulltextCom Texto completo-
crisitem.author.researchunitCNC - Center for Neuroscience and Cell Biology-
crisitem.author.researchunitCNC - Center for Neuroscience and Cell Biology-
crisitem.author.orcid0000-0002-4190-6138-
crisitem.author.orcid0000-0001-7423-2996-
crisitem.author.orcid0000-0002-1172-4018-
Appears in Collections:I&D CNC - Artigos em Revistas Internacionais
FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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