Article (Scientific journals)
Somatic Cell (Neutrophil) Counts in the War Against Staphylococcus aureus: Predator-Prey Models at the Rescue
Detilleux, Johann
2004In Journal of Dairy Science, 87 (11), p. 3716-3724
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Keywords :
mastitis; neutrophil; Staphylococcus aureus; somatic cell count
Abstract :
[en] To address the question of whether a minimum concentration of blood neutrophils is necessary to decrease Staphylococcus aureus concentration in mastitic milk, literature was searched for studies in which neutrophils were incubated with Staph. aureus. Different mathematical models that describe the changes in Staph. aureus population as a function of neutrophilic concentrations were applied to the collected data. The best fitted model established (1) that the rate of bacterial killing depended on the ratio of neutrophils to bacteria with neutrophilic attack rate accelerating at first before decelerating as the ratio increases, and (2) that neutro-phil concentration should be within a limited range to trigger a decline in the bacterial population. Outcomes of this model are supported by what is known about neutrophilic functions and laboratory findings in bovine and human neutrophils. These results may be of assistance in setting selection goals for a better resilience to Staph. aureus mastitis in dairy cattle. Indeed, an optimal neutrophilic concentration appears to exist for successful clearance of Staph. aureus infection, which is neither the lowest nor the highest one.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Detilleux, Johann ;  Université de Liège - ULiège > Département de productions animales > Génétique quantitative - Epidémiologie et santé publique
Language :
English
Title :
Somatic Cell (Neutrophil) Counts in the War Against Staphylococcus aureus: Predator-Prey Models at the Rescue
Publication date :
2004
Journal title :
Journal of Dairy Science
ISSN :
0022-0302
eISSN :
1525-3198
Publisher :
American Dairy Science Association, Champaign, United States - Illinois
Volume :
87
Issue :
11
Pages :
3716-3724
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 12 March 2009

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