Results 11 to 20 of about 3,567,577 (243)

Hijacking Factor H for Complement Immune Evasion

open access: yesFrontiers in Immunology, 2021
The complement system is an essential player in innate and adaptive immunity. It consists of three pathways (alternative, classical, and lectin) that initiate either spontaneously (alternative) or in response to danger (all pathways). Complement leads to
Sara R. Moore   +3 more
doaj   +1 more source

Deregulation of Factor H by Factor H-Related Protein 1 Depends on Sialylation of Host Surfaces

open access: yesFrontiers in Immunology, 2021
To discriminate between self and non-self surfaces and facilitate immune surveillance, the complement system relies on the interplay between surface-directed activators and regulators.
Arthur Dopler   +10 more
doaj   +1 more source

A Family Affair: Addressing the Challenges of Factor H and the Related Proteins

open access: yesFrontiers in Immunology, 2021
Inflammation is a common denominator of diseases. The complement system, an intrinsic part of the innate immune system, is a key driver of inflammation in numerous disorders.
Felix Poppelaars   +11 more
doaj   +1 more source

Complement inhibitor factor H expressed by breast cancer cells differentiates CD14+ human monocytes into immunosuppressive macrophages

open access: yesOncoImmunology, 2020
Macrophages are a major immune cell type in the tumor microenvironment, where they display a tumor-supporting phenotype. Factor H (FH) is a complement inhibitor that also plays a role in several cellular functions.
Karolina I. Smolag   +8 more
doaj   +1 more source

Effect of complement Factor H on antibody repertoire and protection elicited by meningococcal capsular group B vaccines containing Factor H binding protein

open access: yesHuman Vaccines & Immunotherapeutics, 2020
Bacteria produce surface ligands for host complement regulators including Factor H (FH), which allows the bacteria to evade immunity. Meningococcal Factor H binding protein (FHbp) is both a virulence factor and a vaccine antigen.
Peter T. Beernink
doaj   +1 more source

Factor H Autoantibodies and Complement-Mediated Diseases

open access: yesFrontiers in Immunology, 2020
Factor H (FH), a member of the regulators-of-complement-activation (RCA) family of proteins, circulates in human plasma at concentrations of 180–420 mg/L where it controls the alternative pathway (AP) of complement in the fluid phase and on cell surfaces.
Yuzhou Zhang   +10 more
doaj   +1 more source

Anti-factor H antibody and its role in atypical hemolytic uremic syndrome

open access: yesFrontiers in Immunology, 2022
Atypical hemolytic uremic syndrome (aHUS) an important form of a thrombotic microangiopathy (TMA) that can frequently lead to acute kidney injury (AKI). An important subset of aHUS is the anti-factor H associated aHUS.
Rupesh Raina   +8 more
doaj   +1 more source

C3 Glomerulonephritis associated with Anti-complement Factor H Autoantibodies in an Adolescent Male: A Case Report [PDF]

open access: yesChildhood Kidney Diseases, 2021
C3 glomerulonephritis (C3GN), a rare condition associated with dysregulation of the alternative pathway of the complement system, is histopathologically characterized by isolated or dominant C3 deposition in the renal glomeruli.
HyeSun Hyun   +4 more
doaj   +1 more source

Complement Factor H-Related Protein 4A Is the Dominant Circulating Splice Variant of CFHR4

open access: yesFrontiers in Immunology, 2018
Recent research has elucidated circulating levels of almost all factor H-related (FHR) proteins. Some of these proteins are hypothesized to act as antagonists of the important complement regulator factor H (FH), fine-tuning complement regulation on human
Richard B. Pouw   +8 more
doaj   +1 more source

The effect of human factor H on immunogenicity of meningococcal native outer membrane vesicle vaccines with over-expressed factor H binding protein. [PDF]

open access: yesPLoS Pathogens, 2012
The binding of human complement inhibitors to vaccine antigens in vivo could diminish their immunogenicity. A meningococcal ligand for the complement down-regulator, factor H (fH), is fH-binding protein (fHbp), which is specific for human fH.
Peter T Beernink   +5 more
doaj   +1 more source

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