2010
DOI: 10.17221/1716-cjas
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Activities of N-acetyl-β-d-glucosaminidase and glutathione peroxidase in bovine colostrum and milk

Abstract: Parturition and post partum period are susceptible for antioxidative/oxidative imbalance as well as inflammatory processes related to either uterus or mammary gland. Fifteen Holstein-Friesian cows were used to examine the relationship between the antioxidant enzyme glutathione peroxidase (GSH-Px) and inflammatory enzyme N-acetyl-glucosaminidase (NAGase) in colostrum and milk during 12 days after parturition. Samples from each udder quarter were collected immediately after parturition, after 24 h and 48 h as we… Show more

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Cited by 4 publications
(5 citation statements)
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“…Established on the results of the present-day study, a standard value of 0•1-1•04 pmoles 4-MU/min/µL for normal milk NAGase activity in cows with ≥30 DIM (196 samples) could be suggested. The previous conclusion that there was no significant variation in NAGase activity of all four quarters after parturition (Kankofer et al, 2010) was supported by the interpretations of the present study.…”
Section: Discussionsupporting
confidence: 90%
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“…Established on the results of the present-day study, a standard value of 0•1-1•04 pmoles 4-MU/min/µL for normal milk NAGase activity in cows with ≥30 DIM (196 samples) could be suggested. The previous conclusion that there was no significant variation in NAGase activity of all four quarters after parturition (Kankofer et al, 2010) was supported by the interpretations of the present study.…”
Section: Discussionsupporting
confidence: 90%
“…The milk comprises of several enzymes. Milk along with serum and other body fluids contain a lysosomal enzyme, β-N-acetyl-glucosaminidase (NAGase; EC 3.2.1.30) (Kankofer et al, 2010;Leitner et al, 2001). In case of clinical mastitis, NAGase activity is usually increased or just reach up to its topmost value (Fitz-Gerald et al, 1981;Leitner et al, 2003).…”
Section: R E S E a R C H A R T I C L Ementioning
confidence: 99%
“…GSH-Px is one of the principal enzymatic defence systems in controlling the free radicals induced by neutrophils (HAMED et al, 2008). However, GSH-Px deficiency leads to an increase in oxidative stress intensity (KANKOFER et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
“…The data obtained from the cited literature provide conflicting results (HAMED et al, 2008;MATEI et al, 2011;YANG et al, 2011). Some studies have investigated the activity of GSH-Px in bovine colostrum, milk and blood over a short period after calving, and in specific conditions such as clinical or subclinical mastitis (KANKOFER et al, 2010;ANDREI et al, 2011;ERISIR et al, 2011;KONVICNA et al, 2015). GSH-Px activity at different stages of lactation has also been determined (PILARCZYK et al, 2012).…”
Section: Discussionmentioning
confidence: 99%
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