Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1999-4-19
pubmed:abstractText
In this study, we evaluated the effects of several hormones (i.e. growth hormone, prolactin, vitamin D3, luteinizing hormone, oxytocin) on the phagocytosis and intracellular survival of Mycobacterium avium ss. paratuberculosis within bovine peripheral blood monocytes. Phagocytosis of M. avium ss. paratuberculosis declined in a dose-dependent manner when monocytes were exposed to increasing amounts of recombinant bovine growth hormone, with little phagocytosis occurring at a growth hormone concentration of 50 ng/ml. The other hormones tested had little effect on phagocytosis. Continuous exposure of bovine monocytes to bovine growth hormone (10 ng per ml) resulted in enhanced intracellular bacillary growth. This was detected within 3 days of monocyte infection, and resulted in a 1 Log10 greater number of M. avium ss. paratuberculosis in growth hormone treated, than control, monocytes at 12 days of infection. When monocytes were incubated with growth hormone for only the first 5 days of a 12 day incubation period, a further increase in bacillary multiplication was observed. A similar increase in bacillary multiplication was observed when M. avium ss. paratuberculosis monocytes were incubated with prolactin for the first 5 days of a 12 day incubation period. These data indicate that varying levels of growth hormone and prolactin can affect the intracellular multiplication of M. avium ss. paratuberculosis in bovine monocytes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0882-4010
pubmed:author
pubmed:copyrightInfo
Copyright 1999 Academic Press.
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-11
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Hormonal modulation of phagocytosis and intracellular growth of Mycobacterium avium ss. paratuberculosis In bovine peripheral blood monocytes.
pubmed:affiliation
Department of Pathobiological Sciences, University of Wisconsin, Madison, WI, 53706, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't