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Published on: February 23, 2011
Age-related changes in mRNA expression of selected surface receptors in lymphocytes of dairy calves
J Flaga1, Ł Korytkowski1, P Górka1
1Department of Animal Nutrition and Dietetics, University of Agriculture in Krakow, al. Mickiewicza 24/28, 30-059 Krakow, Poland.
Abstract:
The aim of this study was to determine age-related changes in the mRNA expression of four clusters of differentiation (CD: e.g. CD5, CD21, CD22 and CD23) in lymphocytes of calves. Blood samples were collected from 10 Holstein heifers on day 2, 22 and 56 of life and used for lymphocyte isolation. Subsequently, the mRNA was isolated from lymphocytes and the relative expression of CD5, CD21, CD22 and CD23 was investigated using quantitative real-time PCR with GAPDH as a reference gene. CD5, CD21 and CD23 mRNA expression increased linearly (p ≤ 0.04) with calf age, whereas CD22 mRNA expression did not change in the investigated period (p > 0.05). Age related changes in CD5, CD21 and CD23 mRNA expression suggest their importance in the process of lymphocyte maturation in calves.
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