Synthesis of plasma alpha(2) (acute phase)-globulin was demonstrated in isolated perfused rat liver obtained from animals showing acute inflammatory reaction to injury. These findings indicate that the liver is a source of the globulin and that appearance of this protein in the serum results from de novo synthesis by the liver rather than from release of performed and stored globulin.
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http://dx.doi.org/10.1126/science.153.3735.547 | DOI Listing |
Biochimie
November 2010
INSERM U618, Protéases et Vectorisation Pulmonaires, IFR 135 Imagerie Fonctionnelle, Université François Rabelais, Tours, France.
Two kininogens are found in mammalian sera: HK (high molecular weight kininogen) and LK (low molecular weight kininogen) with the exception of the rat which encompasses a third kininogen, T-Kininogen (TK). Kininogens are multifunctional glycosylated molecules related to cystatins (clan IH, family I25). They harbor three cystatin domains but only two of them are tight-binding inhibitors of cysteine cathepsins.
View Article and Find Full Text PDFMed Arh
April 2004
Klinika za Anesteziju, Reanimaciju i Intenzivno Lecenje, Klinicki Centar, Medicinski Fakultet, Uneverzitet Sv. Kiril i Metodij, Skopje, Makedonija.
The acute phase response to sudden illness or trauma is one of the most basic features of the body's defenses against injury. This response includes: alterations in amino acid distribution and metabolism, an increase in acute phase globulin synthesis, increased gluconeogenesis, reductions in serum iron and zinc levels, increased serum copper and ceruloplasmin levels, as well as negative nitrogen balance. Changes in the nutritive status follow as a consequence of these changes.
View Article and Find Full Text PDFHepatology
April 1990
Department of Biophysics, School of Medicine and Dentistry, University of Rochester, New York 14642.
Adult male Sprague-Dawley rats with streptozotocin-induced diabetes (6 to 8 wk duration), treated or untreated with insulin, were studied with two aims: (a) to ascertain whether protracted diabetes in the rat is associated with changes in circulating plasma protein levels analogous to those reported in human diabetic patients with clinical evidence of complications; (b) to evaluate the effects of experimental diabetes on the net cumulative biosynthesis of 10 specific plasma proteins by the isolated liver, perfused for 24 hr. Samples of liver donor plasma and samples of perfusate were analyzed by single radial immunodiffusion or by rocket immunoelectrophoresis for albumin, alpha 1-macroglobulin and the acute phase glycoproteins: fibrinogen, alpha 1-acid glycoprotein (Darcy), alpha 1-acid glycoprotein (Kawasaki), haptoglobin, alpha 2-(acute phase) globulin, hemopexin, C3-complement and ceruloplasmin. Diabetes (6 to 8 wk), untreated with insulin, resulted in significantly increased liver donor plasma levels of alpha 1-acid glycoprotein (Darcy) and alpha 1-acid glycoprotein (Kawasaki); plasma levels of hemopexin and of C3 decreased to 75% and 30% of normal, respectively.
View Article and Find Full Text PDFExp Clin Endocrinol
September 1989
Department of Medicine (Charité), Humboldt University of Berlin, GDR.
The acute phase response can be modulated by glucocorticoids and catecholamines as well. We treated Wistar rats with either epinephrine or different selective or non-selective beta-agonists in combination with beta-antagonists. The alpha 2-acute phase globulin (alpha 2-APG) serum concentrations were examined by means of electroimmunodiffusion 24 hours after drug administration.
View Article and Find Full Text PDFUsing crossed immunoelectrophoresis, immunoelectrodiffusion, autoradiography, and equilibrium binding techniques, we demonstrate that the rat fetus, directly challenged in utero at 18 days by a single subcutaneous turpentine injection, presents a complex acute-phase plasma inflammatory response. A number of fetal serum proteins, 48 h after the injection, increase in concentration by factors of about 2-5. These positive acute-phase reactants (APR) are alpha 1-acute-phase globulin (alpha 1-AP), alpha 2-macroglobulin (alpha 2-M), alpha 1-acid glycoprotein (alpha 1-AG), haptoglobin (Hp), and hemopexin (Hpx).
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