|?sub>1-Acid glycoprotein modulates phagocytosis and killing of Escherichia coli by bovine polymorphonuclear leucocytes and monocytes

详细信息    查看全文

• 作者：Cristina Lecchi^a ; ^c ; Alessio Scarafoni^b ; ^c ; Valerio Bronzo^a ; ^c ; Piera Anna Martino^a ; ^c ; Alice Cavallini^a ; Paola Sartorelli^a ; ^c ; Fabrizio Ceciliani^a ; ^c ; ^{fabrizio.ceciliani@unimi.it}
• 关键词：¦Á1-Acid glycoprotein ; Bovine ; Polymorphonuclear leucocytes ; Monocytes ; Phagocytosis
• 刊名：The Veterinary Journal
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：196
• 期：1
• 页码：47-51
• 全文大小：333 K

文摘

|?sub>1-Acid glycoprotein (AGP) is an acute phase protein that modulates innate immunity and increases in response to infection or injury. The effects of native (phosphorylated) and partially dephosphorylated AGP on the antimicrobial activities of bovine polymorphonuclear leucocytes (PMNs) and monocytes were evaluated. Native AGP inhibited phagocytosis and killing of Escherichia coli by PMNs and monocytes. Engulfment and killing of E. coli were reduced at the acute phase concentration of AGP (0.9 mg/mL) compared with a physiological concentration (0.3 mg/mL). The ability of AGP to inhibit phagocytosis by monocytes and the killing of E. coli by PMNs was reduced following dephosphorylation. The findings indicate that the functions of PMNs and monocytes are differentially regulated by varying concentrations of AGP and its phosphorylation state.