Results 21 to 30 of about 177,002 (299)

Complementary Roles of the Classical and Lectin Complement Pathways in the Defense against Aspergillus fumigatus

open access: yesFrontiers in Immunology, 2016
Aspergillus fumigatus infections are associated with a high mortality rate for immunocompromised patients. The complement system is considered to be important in protection against this fungus, yet the course of activation is unclear.
Anne Rosbjerg   +5 more
doaj   +1 more source

Alternative Complement Pathway Inhibition Abrogates Pneumococcal Opsonophagocytosis in Vaccine-Naïve, but Not in Vaccinated Individuals

open access: yesFrontiers in Immunology, 2021
To assess the relative contribution of opsonisation by antibodies, classical and alternative complement pathways to pneumococcal phagocytosis, we analyzed killing of pneumococci by human blood leukocytes collected from vaccine-naïve and PCV13-vaccinated ...
Lukas Muri   +10 more
doaj   +1 more source

Early complementopathy predicts the outcomes of patients with trauma

open access: yesTrauma Surgery & Acute Care Open, 2019
Background Complementopathy (rapid complement activation and consumption after trauma) has been reported in trauma patients, but the underlying mechanism of these phenomena and their clinical significance remain unclear. This study aimed to determine the
Bin Liu   +6 more
doaj   +1 more source

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]

open access: yes, 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

Novel Evasion Mechanisms of the Classical Complement Pathway [PDF]

open access: yesThe Journal of Immunology, 2016
Abstract Complement is a network of soluble and cell surface-associated proteins that gives rise to a self-amplifying, yet tightly regulated system with fundamental roles in immune surveillance and clearance. Complement becomes activated on the surface of nonself cells by one of three initiating mechanisms known as the classical, lectin,
Brandon L Garcia   +3 more
openaire   +2 more sources

Deficient Classical Complement Pathway Activity in Newborn Sera [PDF]

open access: yesPediatric Research, 1983
Summary: The bactericidal activity of 20 maternal-neonatal paired sera was assessed employing a clinical type la, group B streptococcal isolate, strain 515, known to be opsonized by the classical complement pathway in a non-antibody dependent fashion.
M S, Edwards   +4 more
openaire   +2 more sources

Development of a C3c-based ELISA method for the determination of anti-complementary potency of Bupleurum polysaccharides

open access: yesActa Pharmaceutica Sinica B, 2015
Traditionally, determination of inhibitory potency of complement inhibitors is performed by the hemolytic assay. However, this assay is not applicable to the lectin pathway, thus impeding the understanding of complement inhibitors against the overall ...
Mulu Wu   +3 more
doaj   +1 more source

Borrelia miyamotoi FbpA and FbpB Are Immunomodulatory Outer Surface Lipoproteins With Distinct Structures and Functions

open access: yesFrontiers in Immunology, 2022
Pathogens that traffic in the blood of their hosts must employ mechanisms to evade the host innate immune system, including the complement cascade. The Lyme disease spirochete, Borreliella burgdorferi, has evolved numerous outer membrane lipoproteins ...
Charles E. Booth   +3 more
doaj   +1 more source

Mannose binding lectin is required for alphavirus-induced arthritis/myositis [PDF]

open access: yes, 2015
Mosquito-borne alphaviruses such as chikungunya virus and Ross River virus (RRV) are emerging pathogens capable of causing large-scale epidemics of virus-induced arthritis and myositis.
Blevins, Lance K.   +10 more
core   +1 more source

Classical and alternative complement pathway activation by pneumococci [PDF]

open access: yesInfection and Immunity, 1977
Sixty-two strains of Streptococcus pneumoniae were studied for their abilities to consume selected components of classical and alternative complement pathways in human sera. The classical pathway was blocked by chelating calcium with ethyleneglycol-bios (beta-aminoethyl ether)-N,N-tetraacetic acid and by removing C4. The alternative pathway was blocked
C G, Stephens, R C, Williams, W P, Reed
openaire   +2 more sources

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