Results 41 to 50 of about 471,706 (342)

Complement-coagulation cross-talk: a potential mediator of the physiological activation of complement by low pH

Frontiers in Immunology, 2015
The complement system is a major constituent of the innate immune system. It not only bridges innate and adaptive arms of the immune system but also links the immune system with the coagulation system.
Hany Ibrahim Kenawy, Ismet eBoral, Alan eBevington   +2 more
doaj   +1 more source

Properdin: initiation of alternative complement pathway. [PDF]

Proceedings of the National Academy of Sciences, 1975
Activation of the classical complement (C) system involves conversion of C1 to its active state with subsequent cleavage of C4 and -d C2 so as to form the classical C3 convertase, C42 (a bar indicates the activated form of a protein), which sequentially cleaves C3 and C5 to initiate the cytolytic event associated with the complete reaction.
K F Austen, Douglas T. Fearon
openaire   +2 more sources

Factor H-related protein 4 activates complement by serving as a platform for the assembly of alternative pathway C3 convertase via its interaction with C3b protein [PDF]

, 2012
Human complement factor H-related protein (CFHR) 4 belongs to the factor H family of plasma glycoproteins that are composed of short consensus repeat (SCR) domains.
Hebecker, Mario, Józsi, Mihály
core   +1 more source

The Alternative Complement Pathway Is Activated Without a Corresponding Terminal Pathway Activation in Patients With Heart Failure

Frontiers in Immunology, 2021
ObjectiveDysregulation of the complement system has been described in patients with heart failure (HF). However, data on the alternative pathway are scarce and it is unknown if levels of factor B (FB) and the C3 convertase C3bBbP are elevated in these ...
Margrethe Flesvig Holt, Margrethe Flesvig Holt, Annika E. Michelsen, Annika E. Michelsen, Negar Shahini, Elisabeth Bjørkelund, Christina Holt Bendz, Richard J. Massey, Richard J. Massey, Camilla Schjalm, Bente Halvorsen, Bente Halvorsen, Kaspar Broch, Kaspar Broch, Thor Ueland, Thor Ueland, Thor Ueland, Lars Gullestad, Lars Gullestad, Lars Gullestad, Per H. Nilsson, Per H. Nilsson, Pål Aukrust, Pål Aukrust, Pål Aukrust, Tom Eirik Mollnes, Tom Eirik Mollnes, Tom Eirik Mollnes, Tom Eirik Mollnes, Mieke C. Louwe   +29 more
doaj   +1 more source

The Emerging Role of Complement Proteins as a Target for Therapy of IgA Nephropathy

Frontiers in Immunology, 2019
IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis worldwide and a common cause of end-stage renal disease. Evaluation of a kidney biopsy is necessary for diagnosis, with routine immunofluorescence microscopy revealing dominant ...
Dana V. Rizk, Nicolas Maillard, Bruce A. Julian, Barbora Knoppova, Barbora Knoppova, Todd J. Green, Jan Novak, Robert J. Wyatt   +7 more
doaj   +1 more source

Alternative complement pathway deregulation is correlated with dengue severity. [PDF]

PLoS ONE, 2009
BACKGROUND:The complement system, a key component that links the innate and adaptive immune responses, has three pathways: the classical, lectin, and alternative pathways. In the present study, we have analyzed the levels of various complement components
Eduardo J M Nascimento, Ana M Silva, Marli T Cordeiro, Carlos A Brito, Laura H V G Gil, Ulisses Braga-Neto, Ernesto T A Marques   +6 more
doaj   +1 more source

Complement protein levels in plasma astrocyte-derived exosomes are abnormal in conversion from mild cognitive impairment to Alzheimer's disease dementia. [PDF]

, 2019
IntroductionLevels of complement proteins (CPs) in plasma astrocyte-derived exosomes (ADEs) that are abnormal in Alzheimer's disease (AD) have not been assessed in mild cognitive impairment (MCI).MethodsParticipants (n = 20 per group) had either MCI ...
Elahi, Fanny M, Goetzl, Edward J, Rissman, Robert A, Schwartz, Janice B, Winston, Charisse N   +4 more
core   +2 more sources

Anti-factor B autoantibody in dense deposit disease [PDF]

, 2010
Dense deposit disease (DDD), also known as membranoproliferative glomerulonephritis type II, is a rare kidney disorder that is associated with dysregulation of the alternative pathway of complement.
Józsi, Mihály, Papp, Krisztián, Prechl, József, Strobel, S., Zimmering, M.   +4 more
core   +1 more source

Plasma Proteomic Analysis Reveals the Potential Role of Lectin and Alternative Complement Pathways in IgA Vasculitis Pathogenesis

Diagnostics, 2023
Background: IgA vasculitis (IgAV) is the most common form of childhood vasculitis. A better understanding of its pathophysiology is required to identify new potential biomarkers and treatment targets.
Selcan Demir, Idil Yet, Melis Sardan Ekiz, Erdal Sag, Yelda Bilginer, Omur Celikbicak, Incilay Lay, Seza Ozen   +7 more
doaj   +1 more source

Human complement factor H. Two factor H proteins are derived from alternatively spliced transcripts [PDF]

, 1991
The human complement factor H is an important component in the control of the alternative pathway of complement activation. We have previously shown that at least three factor H homologous mRNA species of 4.3 kb, 1.8 kb and 1.4 kb in length are ...
Alsenz, Alsenz, Aruffo, Chirgwin, Church, Conrad, Day, Feinberg, Fontaine, Kristensen, Laemmli, Maniatis, McAleer, Misasi, Pangburn, Ripoche, Schulz, Schulz, Schwaeble, Seed, Sim, Towbin, Whaley, Whaley   +23 more
core   +1 more source