Human L-Ficolin (Ficolin-2) and Its Clinical Significance

Human L-Ficolin (Ficolin-2) and Its Clinical Significance

Human L-ficolin (P35, ficolin-2) is synthesised in the liver and secreted into the bloodstream where it is one of the major pattern recognition molecules of plasma/serum. Like other ficolins, it consists of a collagen-like tail region linked to a fibrinogen-related globular head; a basic triplet subunit arises via a collagen-like triple helix, and this then forms higher multimers (typically a 1...

L-ficolin and H-ficolin in patients with Familial Mediterranean fever

In the present study we performed comparative determination of the blood levels of L-ficolin and H-ficolin, opsonins and the initial components of the complement lectin pathway, in patients with Familial Mediterranean fever (FMF) in attack and attack-free periods and healthy subjects. In addition, in all study subjects serum levels of IL-1b and and total leukocyte count (TLC) were determined. F...

Moieties of Pneumococcal Teichoic Acid Human L-Ficolin Recognizes Phosphocholine

Human L-ficolin recognizes phosphocholine moieties of pneumococcal teichoic acid.

Human L-ficolin is a soluble protein of the innate immune system able to sense pathogens through its fibrinogen (FBG) recognition domains and to trigger activation of the lectin complement pathway through associated serine proteases. L-Ficolin has been previously shown to recognize pneumococcal clinical isolates, but its ligands and especially its molecular specificity remain to be identified. ...

Effect of capsulation of opportunistic pathogenic bacteria on binding of the pattern recognition molecules mannan-binding lectin, L-ficolin, and H-ficolin.

Mannan-binding lectin (MBL), L-ficolin, and H-ficolin are pattern recognition molecules of the innate immune system. We investigated their ability to bind to different serotypes and noncapsulated variants of two gram-positive bacterial species, Streptococcus pneumoniae and Staphylococcus aureus. MBL did not bind to capsulated S. aureus or capsulated S. pneumoniae but did bind to a noncapsulated...