TY - JOUR
T1 - The role of ficolins and MASPs in hereditary angioedema due to C1-inhibitor deficiency
AU - Csuka, Dorottya
AU - Munthe-Fog, Lea
AU - Skjoedt, Mikkel-Ole
AU - Kocsis, Andrea
AU - Zotter, Zsuzsanna
AU - Gál, Péter
AU - Varga, Lilian
AU - Farkas, Henriette
AU - Füst, George
AU - Garred, Peter
PY - 2013/7
Y1 - 2013/7
N2 - Background and Objective: Hereditary angioedema due to C1-inhibitor deficiency (HAE-C1-INH) causes disturbances in the complement system. However, the influence of HAE-C1-INH on the lectin pathway of complement is unresolved. Thus, we studied the main initiator molecules, enzymes and regulators in the lectin pathway in patients with HAE-C1-INH. Methods: The serum concentrations of ficolin-2, ficolin-3, MBL, MASP-2, MASP-3, and MAP-1 were measured during symptom-free periods in 91 patients with HAE-C1-INH, and in 100 healthy controls using sandwich ELISAs. Results: Compared with controls, the levels of ficolin-2 (p<. 0.0001) and MASP-2 (p= 0.0238) were reduced, while the levels of MBL and MASP-3 were elevated (p= 0.0028 and p<. 0.0001, respectively) in HAE-C1-INH patients. Ficolin-3 and MAP-1 levels did not differ significantly between the two groups. Ficolin-2 correlated with MASP-3 in patients (r= 0.3443, p= 0.0008), while these parameters showed an opposite relationship in controls (r= -0.4625, p<. 0.0001). In the patients, ficolin-3 correlated with MASP-2 (r= 0.3698, p= 0.001). Ficolin-2, -3, and MAP-1 correlated negatively with the annual requirement of plasma derived C1-INH concentrate (r= -0.2863, p= 0.0059; r= -0.2654, p= 0.0110 and r= -0.2501, p= 0.0168, respectively). Ficolin-3 showed a negative correlation with the annual number of attacks (r= -0.2478, p= 0.0179). Conclusions: We found significant differences between patients and controls in the levels of some of the molecules belonging to the lectin complement pathway. Low concentrations of particularly ficolin-2 and -3 were inversely correlated with the severity of HAE-C1-INH, while this was not observed for MBL. This suggests a previously unrecognized involvement of the ficolin-dependent lectin complement pathway in the pathophysiology of HAE-C1-INH.
AB - Background and Objective: Hereditary angioedema due to C1-inhibitor deficiency (HAE-C1-INH) causes disturbances in the complement system. However, the influence of HAE-C1-INH on the lectin pathway of complement is unresolved. Thus, we studied the main initiator molecules, enzymes and regulators in the lectin pathway in patients with HAE-C1-INH. Methods: The serum concentrations of ficolin-2, ficolin-3, MBL, MASP-2, MASP-3, and MAP-1 were measured during symptom-free periods in 91 patients with HAE-C1-INH, and in 100 healthy controls using sandwich ELISAs. Results: Compared with controls, the levels of ficolin-2 (p<. 0.0001) and MASP-2 (p= 0.0238) were reduced, while the levels of MBL and MASP-3 were elevated (p= 0.0028 and p<. 0.0001, respectively) in HAE-C1-INH patients. Ficolin-3 and MAP-1 levels did not differ significantly between the two groups. Ficolin-2 correlated with MASP-3 in patients (r= 0.3443, p= 0.0008), while these parameters showed an opposite relationship in controls (r= -0.4625, p<. 0.0001). In the patients, ficolin-3 correlated with MASP-2 (r= 0.3698, p= 0.001). Ficolin-2, -3, and MAP-1 correlated negatively with the annual requirement of plasma derived C1-INH concentrate (r= -0.2863, p= 0.0059; r= -0.2654, p= 0.0110 and r= -0.2501, p= 0.0168, respectively). Ficolin-3 showed a negative correlation with the annual number of attacks (r= -0.2478, p= 0.0179). Conclusions: We found significant differences between patients and controls in the levels of some of the molecules belonging to the lectin complement pathway. Low concentrations of particularly ficolin-2 and -3 were inversely correlated with the severity of HAE-C1-INH, while this was not observed for MBL. This suggests a previously unrecognized involvement of the ficolin-dependent lectin complement pathway in the pathophysiology of HAE-C1-INH.
U2 - 10.1016/j.molimm.2012.12.015
DO - 10.1016/j.molimm.2012.12.015
M3 - Journal article
C2 - 23318225
SN - 0161-5890
VL - 54
SP - 271
EP - 277
JO - Molecular Immunology
JF - Molecular Immunology
IS - 3-4
ER -