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- aggregation classification "A1".
- aggregation creator B104279.
- aggregation creator B104280.
- aggregation creator person.
- aggregation creator person.
- aggregation date "1998".
- aggregation hasFormat 173164.bibtex.
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- aggregation isPartOf urn:issn:1357-7298.
- aggregation language "eng".
- aggregation subject "Biology and Life Sciences".
- aggregation title "Assessment of blood neutrophil oxidative burst activity in dairy cows during the period of parturition".
- aggregation abstract "Bovine blood neutrophil oxidative burst activity, the total leukocyte count and its differentiation, as well as progesterone, glucose and cortisol levels were studied on 10 cows from 1 week prior to calving until 8 weeks after parturition. From day -7 before parturition a decrease in the metabolic oxidative burst activity of neutrophils was observed, reaching the lowest value 3 days after calving (0.28 (s.e. 0.06) nmol/l H2O2 per min 10(6) neutrophils) (P less than or equal to 0.01). Thereafter, values increased with a maximum of activity 26 days after parturition (0.57 (s.e. 0.05) nmol/H2O2 per min per 10(6) neutrophils). At the end of the experiment the neutrophils H2O2-production was comparable to values observed on day -7. The maximum total leukocyte count was observed on the day of parturition (8,108 (s.e. 370) leukocytes per mu l blood) (P less than or equal to 0.01) returning to normal levels about 3 weeks after calving. Lymphocytes and neutrophils showed a trend analogous to that of the total leukocytes. Eosinophils and monocytes did not change during the entire period. With the rapid increase of circulating neutrophils observed on the calving day, a marked left shift was observed with a maximum number of immature neutrophils (48.6%) observed on day +3 (1477 (s.e. 242) immature neutrophils per mu l blood) (P less than or equal to 0.01), reaching normal values about 4 weeks after parturition. A significant increase (P less than or equal to 0.01) of plasma glucose was found on the day of parturition (91.4 (s.e. 6.8) mg per 100 ml plasma), while the levels of cortisol reached their maximum 3 clays after calving (22.05 (s.e. 8.46) ng/ml plasma). Progesterone levels averaged 4.07 (s.e. 1.21) mu g/l 7 days before calving, declining precipitously to 0.06 (s.e. 0.45) mu g/l 3 days after calving (P less than or equal to 0.01), remaining very low for a period of about 3 weeks. Minimum and maximum anoestrus post-partum were 12 and 57 days, respectively. Despite great hormonal variation observed in the peripartum period, no significant correlation was found between measured hormones and the oxidative burst activity of neutrophils.".
- aggregation authorList BK267261.
- aggregation endPage "426".
- aggregation issue "3".
- aggregation startPage "421".
- aggregation volume "67".
- aggregation isDescribedBy 173164.
- aggregation similarTo LU-173164.