Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.4.99.7 (sialyltransferase)
 1,534 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The role of monocyte derived factors in the acute phase response to inflammation is discussed. The kinetics of response of alpha 1-acid glycoprotein, sialyltransferase and albumin to a rat monokine preparation is described. There was an increase in synthesis of alpha 1-acid glycoprotein and sialyltransferase and a decrease in albumin synthesis following administration. However, the kinetics of response of sialyltransferase to the monokine was much slower than was found for the other two proteins. The possibility that sialyltransferase responds to a different monokine compared to the other acute phase proteins is discussed.
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PMID:The acute phase response to inflammation: the role of monokines in changes in liver glycoproteins and enzymes of glycoprotein metabolism. 311 78

Rat peritoneal leukocytes (PEC) were fractionated on Percoll gradients to prepare populations of monocytes/lymphocytes and polymorphonuclear leukocytes; adherent (monocyte enriched) and non-adherent (lymphocytes/polymorphonuclear leukocytes) cells were also isolated from PEC. Cytokines were prepared from PEC and subfractions and injected into rats to induce the acute phase reactants serum alpha 1-acid glycoprotein and sialyltransferase; negative acute phase parameters serum albumin and liver hexosaminidase were also assayed. Monocyte derived cytokines (monokines) mimicked the acute phase response of all four parameters in vivo. The sialyltransferase isoenzyme that responded to monokine was identified as the Gal beta 1----4GlcNAc alpha 2----6 isoenzyme.
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PMID:Studies of monokines as mediators of the acute phase response: effects on sialyltransferase, albumin, alpha 1-acid glycoprotein and beta-N-acetylhexosaminidase. 316 99

Rat hepatic Gal beta 1----4GlcNAc alpha 2----6 sialyltransferase is released into the blood at elevated levels following an inflammatory challenge: this is a typical response of the group of plasma proteins known as acute-phase reactants. In the present study, primary cultures of liver parenchymal cells are used to demonstrate that the same hepatic cell type that produces plasma proteins such as fibrinogen also produces and releases sialyltransferase. Hepatic production of sialyltransferase is stimulated by a major regulator of hepatic acute-phase reactant production, the hepatocyte-stimulating factor (HSF), while another monokine, interleukin-1, does not affect hepatocyte sialyltransferase production. The maximum increase in sialyltransferase occurs 48 h after exposure to HSF which is considerably later than the fibrinogen response. The sialyltransferase that is stimulated by HSF is the Gal beta 1----4GlcNAc alpha 2----6 isozyme.
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PMID:Studies on the effect of the hepatocyte-stimulating factor on galactose-beta 1----4-N-acetylglucosamine alpha 2----6-sialyltransferase in cultured hepatocytes. 351 71