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首页> 外文期刊>Veterinary Immunology and Immunopathology >Relationship between concentration of lingual antimicrobial | peptide and somatic cell count in milk of dairy cows
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Relationship between concentration of lingual antimicrobial | peptide and somatic cell count in milk of dairy cows

机译：舌抗菌剂浓度之间的关系奶牛牛奶中的多肽和体细胞计数

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摘要

Lingual antimicrobial peptide (LAP) belongs to the fS-defensin family in cattle and is found in milk. LAP concentrations increase in milk from mastitic udders; however, the relationship between LAP concentrations and the somatic cell count (SCC) in milk remains to be elucidated in detail. Therefore, the present study was undertaken to investigate the relationship between LAP concentrations and the SCC in bovine milk to assess whether LAP may be used as an indicator of SCC. Milk was collected from 66udders showing various SCCs. The SCC and LAP concentrations were measured in the milk. A significantly higher LAP concentration was observed in milk having 500-5000 x 103 cells/ml and >5000 x 103 cells/ml SCC groups than in lower SCC groups (<50 x 103 cells/ml and 50-500 x 103 cells/ml). A significantly positive correlation between LAP concentrations and SCCs in milk was observed (r=0.68). In milk samples with >26nM of LAP, 92.0% of milk samples had high SCCs (>200 x 103 cells/ml). The concentration ofLAP in milk infected with Staphylococcus aureus. Streptococcus bovis, Streptococcus dysgalactiae, and Escherichia coli was significantly higher than that in uninfected milk. These results suggest that the concentration of LAP can be a useful indicator ofthe SCC in dairy cows.
机译：舌状抗菌肽（LAP）属于牛的fS-防御素家族，存在于牛奶中。乳腺中乳汁中的LAP浓度增加;然而，牛奶中LAP浓度与体细胞计数（SCC）之间的关系仍有待详细阐明。因此，本研究旨在调查牛乳中LAP浓度与SCC之间的关系，以评估LAP是否可以用作SCC的指标。从显示各种SCC的66个乳房中收集牛奶。测量牛奶中的SCC和LAP浓度。在SCC组为500-5000 x 103个细胞/ ml和> 5000 x 103个细胞/ ml的牛奶中，观察到的LAP浓度显着高于低SCC组（<50 x 103个细胞/ ml和50-500 x 103个细胞/ ml） ）。观察到牛奶中LAP浓度与SCC之间呈显着正相关（r = 0.68）。在LAP> 26nM的牛奶样品中，有92.0％的牛奶样品具有较高的SCC（> 200 x 103细胞/ ml）。感染金黄色葡萄球菌的牛奶中LAP的浓度。牛链球菌，痢疾链球菌和大肠杆菌明显高于未感染的牛奶。这些结果表明，LAP的浓度可以作为奶牛SCC的有用指标。

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