Effects of bovine leukemia virus infection on milk neutrophil function and the milk lymphocyte profile

dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorLIBERA, Alice Maria Melville Paiva Della
dc.contributor.authorSOUZA, Fernando Nogueira de
dc.contributor.authorBATISTA, Camila Freitas
dc.contributor.authorSANTOS, Bruna Parapinski
dc.contributor.authorAZEVEDO, Luis Fernando Fernandes de
dc.contributor.authorSANCHEZ, Eduardo Milton Ramos
dc.contributor.authorDINIZ, Soraia Araujo
dc.contributor.authorSILVA, Marcos Xavier
dc.contributor.authorHADDAD, Joao Paulo
dc.contributor.authorBLAGITZ, Maiara Garcia
dc.date.accessioned2015-07-01T21:18:19Z
dc.date.available2015-07-01T21:18:19Z
dc.date.issued2015
dc.description.abstractThe effects of bovine leukemia virus (BLV) on the immune response have been extensively investigated; however, its effects on mammary gland immunity are only speculative. Although BLV has a tropism for B cells, it can affect both adaptive and innate immunities because these systems share many effector mechanisms. This scenario is the basis of this investigation of the effects of BLV on mammary gland immunity, which is largely dependent upon neutrophilic functions. Thus, the present study sought to examine neutrophilic functions and the lymphocyte profile in the milk of naturally BLV-infected cows. The viability of the milk neutrophils and the percentage of milk neutrophils that produced reactive oxygen species (ROS) or phagocytosed Staphylococcus aureus were similar between BLV-infected and BLV-uninfected dairy cows. Furthermore, the expression of CD62L and CD11b by the milk neutrophils and the percentage of milk neutrophils (CH138(+) cells) that were obtained from the udder quarters of the BLV-infected cows were not altered. Conversely, the median fluorescence intensity (MFI) representing intracellular ROS production and the phagocytosis of S. aureus, the expression of CD44 by the milk neutrophils and the percentage of apoptotic B cells were lower in the milk cells from BLV-infected dairy cows, particularly those from animals with persistent lymphocytosis (PL). The lymphocyte subsets were not different among the groups, with the exception of the percentage of CD5-/CD11b(-) B cells, which was higher in the milk cells from BLV-infected cows, particularly those with PL. Thus, the present study provides novel insight into the implications of BLV infection for mammary gland immunity.
dc.description.indexMEDLINE
dc.description.sponsorshipSao Paulo State Research Foundation [2009/50672-0]
dc.identifier.citationVETERINARY RESEARCH, v.46, article ID 2, 8p, 2015
dc.identifier.doi10.1186/s13567-014-0125-4
dc.identifier.eissn1297-9716
dc.identifier.issn0928-4249
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/9614
dc.language.isoeng
dc.publisherBIOMED CENTRAL LTD
dc.relation.ispartofVeterinary Research
dc.rightsopenAccess
dc.rights.holderCopyright BIOMED CENTRAL LTD
dc.subject.othersomatic-cell counts
dc.subject.otherleukosis virus
dc.subject.otherdairy-cows
dc.subject.otherb-cells
dc.subject.otherperipheral-blood
dc.subject.othermammary-gland
dc.subject.otherpersistent lymphocytosis
dc.subject.othersubclinical mastitis
dc.subject.othermanagement-practices
dc.subject.othercoliform mastitis
dc.subject.wosVeterinary Sciences
dc.titleEffects of bovine leukemia virus infection on milk neutrophil function and the milk lymphocyte profile
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.author.externalLIBERA, Alice Maria Melville Paiva Della:Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Clin Med, BR-05508270 Sao Paulo, Brazil
hcfmusp.author.externalSOUZA, Fernando Nogueira de:Univ Fed Minas Gerais, Escola Vet, Dept Med Vet Prevent, BR-31270010 Belo Horizonte, MG, Brazil
hcfmusp.author.externalBATISTA, Camila Freitas:Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Clin Med, BR-05508270 Sao Paulo, Brazil
hcfmusp.author.externalSANTOS, Bruna Parapinski:Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Clin Med, BR-05508270 Sao Paulo, Brazil
hcfmusp.author.externalAZEVEDO, Luis Fernando Fernandes de:Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Clin Med, BR-05508270 Sao Paulo, Brazil
hcfmusp.author.externalDINIZ, Soraia Araujo:Univ Fed Minas Gerais, Escola Vet, Dept Med Vet Prevent, BR-31270010 Belo Horizonte, MG, Brazil
hcfmusp.author.externalSILVA, Marcos Xavier:Univ Fed Minas Gerais, Escola Vet, Dept Med Vet Prevent, BR-31270010 Belo Horizonte, MG, Brazil
hcfmusp.author.externalHADDAD, Joao Paulo:Univ Fed Minas Gerais, Escola Vet, Dept Med Vet Prevent, BR-31270010 Belo Horizonte, MG, Brazil
hcfmusp.author.externalBLAGITZ, Maiara Garcia:Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Clin Med, BR-05508270 Sao Paulo, Brazil
hcfmusp.citation.scopus42
hcfmusp.contributor.author-fmusphcEDUARDO MILTON RAMOS SANCHEZ
hcfmusp.description.articlenumber2
hcfmusp.description.volume46
hcfmusp.origemWOS
hcfmusp.origem.pubmed25595200
hcfmusp.origem.scopus2-s2.0-84924058986
hcfmusp.origem.wosWOS:000349255800001
hcfmusp.publisher.cityLONDON
hcfmusp.publisher.countryENGLAND
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