Details

Autor(en) / Beteiligte

• Mayer, S J
• Waterman, A E
• Keen, P M
• Craven, N
• Bourne, F J

Titel

Oxygen concentration in milk of healthy and mastitic cows and implications of low oxygen tension for the killing of Staphylococcus aureus by bovine neutrophils

Ist Teil von

• Journal of dairy research, 1988-11, Vol.55 (4), p.513-519

Ort / Verlag

England

Erscheinungsjahr

1988

Quelle

MEDLINE

Beschreibungen/Notizen

• The partial pressure of O2 in milk from normal cows and from cows with mastitis was measured and the concentrations of O2 calculated. Oxygen levels of milk from normal cows were similar to those in venous plasma, but inflammation of the mammary gland led to a dramatic drop in O2 concentration to less than 10% of control values. Intracellular survival of Staphylococcus aureus strain M60 in bovine neutrophils was greater under anaerobic than aerobic conditions. The implications of low O2 concentrations in milk from infected mammary glands for the bactericidal activity of bovine neutrophils is discussed.