Results 41 to 50 of about 110,341 (205)

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

Neutrophils from ANCA-associated vasculitis patients show an increased capacity to activate the complement system via the alternative pathway after ANCA stimulation.

open access: yesPLoS ONE, 2019
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV), including granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA), are autoimmune conditions associated with small vessel inflammation.
Sophie Ohlsson   +6 more
doaj   +1 more source

Activation of the alternative complement pathway by Naegleria fowleri [PDF]

open access: yesInfection and Immunity, 1980
Naegleria fowleri amoebae were lysed by adult fresh human serum, and their multiplication was inhibited in culture medium supplemented with 10% fresh human serum. Heat inactivation (56 degrees C, 30 min) of serum abrogated these lytic and inhibitory effects.
T W Holbrook   +3 more
openaire   +3 more sources

Activation of the Alternative Complement Pathway by Fonsecaea pedrosoi

open access: yesJournal of Investigative Dermatology, 1984
Human sera were examined for evidence of complement activation by Fonsecaea pedrosoi. The serum that had been incubated with F. pedrosoi showed immunoelectrophoretic C3 conversion and generation of C5a, as measured by radioimmunoassay. C3 conversion and C5a generation did not occur in serum chelated with EDTA, or in serum heated to 56 degrees C for 30 ...
Hachiro Tagami   +3 more
openaire   +3 more sources

Autoantibodies against alternative complement pathway proteins in renal pathologies

open access: yesNefrología (English Edition), 2016
Complement system activation plays an important role in several renal pathologies, including antibody-mediated glomerulonephritis, ischaemia–reperfusion injury of transplanted kidneys or renal allograft rejection.
Pilar Nozal, Margarita López-Trascasa
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

Complement-Amplifying Conditions in Atypical Hemolytic Uremic Syndrome: A Canadian Case Series

open access: yesCanadian Journal of Kidney Health and Disease, 2022
Rationale: Thrombotic microangiopathies (TMAs) are systemic disorders that often affect the kidneys and encompass a heterogeneous group of conditions, including atypical hemolytic uremic syndrome (aHUS).
Christopher J. Patriquin   +4 more
doaj   +1 more source

Activation of the alternative complement pathway by Trichomonas vaginalis [PDF]

open access: yesInfection and Immunity, 1981
The mechanism underlying the lysis of Trichomonas vaginalis by normal human or guinea pig serum was investigated. The involvement of the complement system was demonstrated by the failure of human serum deficient in C3 or C8 to mediate parasite killing and by the ablation of lytic activity observed when fresh sera were heated at 56 degrees C or treated ...
A Sher, Frances D. Gillin
openaire   +3 more sources

Alternative Pathway of Complement in Sickle Cell Disease [PDF]

open access: yesPediatric Research, 1977
Thirty-one patients, 10 months to 20 years of age, were studied. A complement abnormality was not identified in sera from patients with sickle cell disease (SCD) by the methods employed in the present study. Concentrations of C3, factor B, total hemolytic activity (CH50), properdin, and C3b inactivator were similar in sera from patients and control ...
Clark D. West   +3 more
openaire   +2 more sources

C3 glomerulopathy: a kidney disease mediated by alternative pathway deregulation

open access: yesFrontiers in Nephrology
C3 glomerulopathy (C3G) is an ultra-rare complement-mediated kidney disease caused by to the deregulation of the alternative pathway (AP) of proximal complement.
Karin Heidenreich   +8 more
doaj   +1 more source

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