Mannose-binding lectin in HIV infection: relation to disease progression and highly active antiretroviral therapy.
To gain insight into the possible role of mannose-binding lectin (MBL) in HIV infection, we analyzed serum levels and the functional complement activation capacity of MBL in different clinical stages of HIV infection during cross-sectional analysis (n = 62) and longitudinal testing (n = 23) as well as during highly active antiretroviral therapy (HAART) (n = 40). The results were correlated with serum levels of C-reactive protein (CRP). Our main findings were as follows. MBL levels and the capacity of complement activation by the MBL pathway were increased in HIV-infected patients with advanced clinical disease as shown in both cross-sectional analysis and longitudinal testing. There was no "normalization" of these parameters during HAART. In fact, MBL levels increased during therapy, and this increase was associated with a good virologic response. Although both MBL and CRP are regarded as acute-phase proteins, no correlation was seen between these proteins. Thus, the notably diverse patterns of MBL responses among patients with different clinical courses and treatments suggest that MBL and complement activation by the MBL pathway could be involved in the pathophysiology of HIV infection. It is not inconceivable that the net effects of MBL responses may vary in different clinical settings.
Heggelund
Lars
L
Section of Clinical Immunology and Infectious Diseases and Department of Clinical Chemistry, Rikshospitalet University Hospital, Oslo, Norway. lars.heggelund@klimmed.uio.no
Mollnes
Tom Eirik
TE
Ueland
Thor
T
Christophersen
Bjørn
B
Aukrust
Pål
P
Frøland
Stig S
SS
D000328:Adult; D023241:Antiretroviral Therapy, Highly Active; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000032:analysis*; D003430:Cross-Sectional Studies; D018450:Disease Progression; D005260:Female; D015658:HIV Infections / Q000097:blood* / Q000188:drug therapy / Q000503:physiopathology; D006801:Humans; D008111:Liver Function Tests; D008137:Longitudinal Studies; D018655:Lymphocyte Count; D008297:Male; D037601:Mannose-Binding Lectin / Q000097:blood*; D013601:T-Lymphocytes / Q000276:immunology; D013997:Time Factors
D015415:Biomarkers; D037601:Mannose-Binding Lectin; D002097:C-Reactive Protein