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  • Title: The kinetics of hemopexin and alpha1-acid glycoprotein levels induced by injection of inflammatory agents in chickens.
    Author: Adler KL, Peng PH, Peng RK, Klasing KC.
    Journal: Avian Dis; 2001; 45(2):289-96. PubMed ID: 11417807.
    Abstract:
    The acute phase response to inflammation induces changes in the secretion of hepatic proteins. To examine the time course of an acute phase protein response in broiler chickens, the plasma levels of hemopexin (HX) and alpha1-acid glycoprotein (AGP) and liver HX mRNA were measured at various time points from 3 hr to 336 hr after an intraabdominal injection of either lipopolysaccharide (LPS), complete Freund's adjuvant, incomplete Freund's adjuvant, phytohemagglutin, or mineral oil. Uninjected chicks served as controls. The accumulation of liver HX mRNA began within 3 hr of stimulation and peaked at 12 hr. Relative to control levels, plasma HX and AGP levels increased by 6-12 hr postchallenge and peaked at 24 hr. Complete Freund's adjuvant and LPS treatments induced the greatest increase in plasma HX (threefold; P < 0.05). Plasma levels of HX and AGP returned to control levels at 336 and 168 hr postinjection, respectively. A second experiment demonstrated that turpentine induced a similar AGP response as LPS and that albumin is a negative acute phase protein. The results suggest that plasma levels of HX or AGP could be used as an indicator of the systemic component of a local inflammatory response in chickens.
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