Results 51 to 60 of about 135,678 (188)

A novel assay that characterizes properdin function shows neutrophil-derived properdin has a distinct oligomeric distribution

open access: yesFrontiers in Immunology, 2023
Properdin acts as an essential positive regulator of the alternative pathway of complement by stabilizing enzymatic convertases. Identical properdin monomers form head-to-tail associations of oligomers in a reported 20:54:26 ratio (most often described ...
Sara R. Moore   +5 more
doaj   +1 more source

Activation of the Alternative Complement Pathway by Fungal Melanins [PDF]

open access: yesClinical and Vaccine Immunology, 2002
ABSTRACTMelanins are complex biological pigments formed by the oxidative polymerization of phenolic and/or indolic compounds. These pigments have been implicated in the pathogenesis of some microbial infections, malignancies, degenerative disorders, and autoimmune diseases.
A L, Rosas   +4 more
openaire   +2 more sources

Serum amyloid P aids complement-mediated immunity to Streptococcus pneumoniae [PDF]

open access: yes, 2007
The physiological functions of the acute phase protein serum amyloid P (SAP) component are not well defined, although they are likely to be important, as no natural state of SAP deficiency has been reported.
Brown, JS   +7 more
core  

Ecotin, a microbial inhibitor of serine proteases, blocks multiple complement dependent and independent microbicidal activities of human serum.

open access: yesPLoS Pathogens, 2019
Ecotin is a serine protease inhibitor produced by hundreds of microbial species, including pathogens. Here we show, that ecotin orthologs from Escherichia coli, Yersinia pestis, Pseudomonas aeruginosa and Leishmania major are potent inhibitors of MASP-1 ...
Zoltán Attila Nagy   +10 more
doaj   +1 more source

Activation of the alternative complement pathway by Sporothrix schenckii [PDF]

open access: yesInfection and Immunity, 1986
We studied the activation of complement by Sporothrix schenckii yeast cells. Total complement activity, and the effect of various activators on this activity, were assayed on aliquots of fresh nonimmune human serum with and without prior treatment with chelators.
E N, Scott, H G, Muchmore, D P, Fine
openaire   +2 more sources

Bloqueo del complemento: promesas terapéuticas y retos pendientes en la práctica clínica

open access: yesNefrología
Resumen: La comprensión del complemento en las glomerulopatías ha avanzado notablemente, mostrando que este sistema, más allá de la inmunidad innata, es un mediador clave del daño renal en un amplio espectro de nefropatías, desde las mediadas por ...
Gema Fernández-Juárez   +9 more
doaj   +1 more source

Components of the alternative complement pathway in patients with psoriasis

open access: yesActa Dermatovenerologica Alpina Pannonica et Adriatica, 2017
Psoriasis is a chronic inflammatory skin disease. Adipose tissue plays important roles in the events that regulate body metabolism. This study determined the levels of complement 3 ( C3), acylation-stimulating protein (ASP), and adipsin, which take part in the alternate complement pathway, and are synthesized in and secreted by adipose tissue.Thirty ...
Bugdayci, Guler, Sereflican, Betul
openaire   +4 more sources

Methylprednisolone inhibits the alternative and amplification pathways of complement [PDF]

open access: yesInfection and Immunity, 1982
Methylprednisolone sodium succinate limited the ability of zymosan or lipopolysaccharide to activate complement in normal serum by the alternative amplification pathways. Methylprednisolone limited B consumption in a reaction mixture which contained purified C3b, D, and B, indicating that soluble steroid directly inhibited the amplification pathway ...
J M, Weiler, B D, Packard
openaire   +2 more sources

Blockade of Alternative Complement Pathway in Dense Deposit Disease

open access: yesCase Reports in Nephrology, 2014
A patient aged 17 with dense deposit disease associated with complement activation, circulating C3 Nef, and Factor H mutation presented with nephrotic syndrome and hypertension.
Aurore Berthe-Aucejo   +6 more
doaj   +1 more source

Small-molecule factor D inhibitors selectively block the alternative pathway of complement in paroxysmal nocturnal hemoglobinuria and atypical hemolytic uremic syndrome

open access: yesHaematologica, 2017
Paroxysmal nocturnal hemoglobinuria and atypical hemolytic uremic syndrome are diseases of excess activation of the alternative pathway of complement that are treated with eculizumab, a humanized monoclonal antibody against the terminal complement ...
Xuan Yuan   +8 more
doaj   +1 more source

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