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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1991-12-6
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pubmed:abstractText |
Two neutrophil defensins, rabbit peptides NP-1 and NP-5, were examined for their in vitro antibacterial activity against a panel of Gram-positive and Gram-negative organisms isolated from mastitic cows. Incubation for 60 minutes with 5 micrograms/ml of NP-1 in 10 mM sodium phosphate buffer resulted in substantial killing (greater than 95%) of all organisms tested. Although NP-5 was virtually inactive under these same conditions, supplementation of the incubation mixture with dilute nutrient media sensitized otherwise resistant organisms to this defensin. For both NP-1 and NP-5, bactericidal activity was dependent on time and concentration. Our findings demonstrate that the spectrum of defensin bactericidal activities include clinically important bovine pathogens. Further, the data demonstrate that NP-1 and NP-5, peptides which are homologous in 18 of their 33 residue positions, possess distinct mechanisms of action.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0378-1135
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
29
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
49-58
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:1949554-Amino Acid Sequence,
pubmed-meshheading:1949554-Animals,
pubmed-meshheading:1949554-Bacteria,
pubmed-meshheading:1949554-Blood Bactericidal Activity,
pubmed-meshheading:1949554-Blood Proteins,
pubmed-meshheading:1949554-Cattle,
pubmed-meshheading:1949554-Defensins,
pubmed-meshheading:1949554-Escherichia coli,
pubmed-meshheading:1949554-Listeria monocytogenes,
pubmed-meshheading:1949554-Mastitis, Bovine,
pubmed-meshheading:1949554-Molecular Sequence Data,
pubmed-meshheading:1949554-Neutrophils,
pubmed-meshheading:1949554-Rabbits,
pubmed-meshheading:1949554-Salmonella typhimurium,
pubmed-meshheading:1949554-Staphylococcus aureus,
pubmed-meshheading:1949554-beta-Defensins
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pubmed:year |
1991
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pubmed:articleTitle |
Bactericidal potency and mechanistic specificity of neutrophil defensins against bovine mastitis pathogens.
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pubmed:affiliation |
Department of Clinical Pathology, School of Veterinary Medicine, University of California, Davis 95616.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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