Results 1 to 10 of about 433,538 (263)

Low molecular weight polysialic acid binds to properdin and reduces the activity of the alternative complement pathway [PDF]

Scientific Reports, 2022
Sialic acids as the terminal caps of the cellular glycocalyx play an essential role in self-recognition and were shown to modulate complement processes via interaction between α2,3-linked sialic acids and complement factor H. Previously, it was suggested
Anahita Shahraz, Yuchen Lin, Joshua Mbroh, Jonas Winkler, Huan Liao, Marie Lackmann, Annemarie Bungartz, Peter F. Zipfel, Christine Skerka, Harald Neumann   +9 more
doaj   +4 more sources

In vaccinated individuals serum bactericidal activity against B meningococci is abrogated by C5 inhibition but not by inhibition of the alternative complement pathway [PDF]

Frontiers in Immunology, 2023
IntroductionSeveral diseases caused by the dysregulation of complement activation can be treated with inhibitors of the complement components C5 and/or C3.
Emma Ispasanie, Emma Ispasanie, Lukas Muri, Lukas Muri, Marc Schmid, Marc Schmid, Anna Schubart, Christine Thorburn, Natasa Zamurovic, Thomas Holbro, Michael Kammüller, Gerd Pluschke, Gerd Pluschke   +12 more
doaj   +5 more sources

Complement Factor D as a Strategic Target for Regulating the Alternative Complement Pathway [PDF]

Frontiers in Immunology, 2021
The complement system is central to first-line defense against invading pathogens. However, excessive complement activation and/or the loss of complement regulation contributes to the development of autoimmune diseases, systemic inflammation, and ...
Jonathan Barratt, Jonathan Barratt, Ilene Weitz   +2 more
doaj   +2 more sources

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

Frontiers 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, Lukas Muri, Emma Ispasanie, Emma Ispasanie, Anna Schubart, Christine Thorburn, Natasa Zamurovic, Thomas Holbro, Michael Kammüller, Gerd Pluschke, Gerd Pluschke   +10 more
doaj   +2 more sources

The lectin pathway of complement activation is a critical component of the innate immune response to pneumococcal infection. [PDF]

PLoS Pathogens, 2012
The complement system plays a key role in host defense against pneumococcal infection. Three different pathways, the classical, alternative and lectin pathways, mediate complement activation.
Youssif M Ali, Nicholas J Lynch, Kashif S Haleem, Teizo Fujita, Yuichi Endo, Soren Hansen, Uffe Holmskov, Kazue Takahashi, Gregory L Stahl, Thomas Dudler, Umakhanth V Girija, Russell Wallis, Aras Kadioglu, Cordula M Stover, Peter W Andrew, Wilhelm J Schwaeble   +15 more
doaj   +11 more sources

Alternative Complement Pathway Inhibition by Lampalizumab: Analysis of Data From Chroma and Spectri Phase III Clinical Trials. [PDF]

Ophthalmol Sci, 2023
Purpose: Lampalizumab, an antigen-binding fragment of a humanized monoclonal antibody directed against complement factor D (CFD), is designed to treat geographic atrophy (GA) secondary to age-related macular degeneration. Given the lack of clinical efficacy observed in patients with GA in the phase III Chroma/Spectri trials, we investigated the impact ...
Edmonds R, Steffen V, Honigberg LA, Chang MC.   +3 more
europepmc   +3 more sources

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

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   +2 more sources

PolySialic Acid Nanoparticles Actuate Complement-Factor-H-Mediated Inhibition of the Alternative Complement Pathway: A Safer Potential Therapy for Age-Related Macular Degeneration [PDF]

Pharmaceuticals
The alternative pathway of the complement system is implicated in the etiology of age-related macular degeneration (AMD). Complement depletion with pegcetacoplan and avacincaptad pegol are FDA-approved treatments for geographic atrophy in AMD that, while
Sheri L. Peterson, Anitha Krishnan, Diyan Patel, Ali Khanehzar, Amit Lad, Jutamas Shaughnessy, Sanjay Ram, David Callanan, Derek Kunimoto, Mohamed A. Genead, Michael J. Tolentino   +10 more
doaj   +2 more sources

Mutations in the alternative complement pathway in multiple myeloma patients with carfilzomib-induced thrombotic microangiopathy [PDF]

Blood Cancer Journal, 2023
Thrombotic microangiopathy (TMA) has been reported to occur in multiple myeloma (MM) patients in association with treatment with carfilzomib, an irreversible proteasome inhibitor (PI).
Maria Moscvin, Christine Ivy Liacos, Tianzeng Chen, Foteini Theodorakakou, Despina Fotiou, Shahrier Hossain, Sean Rowell, Houry Leblebjian, Eileen Regan, Peter Czarnecki, Filippo Bagnoli, Niccolo’ Bolli, Paul Richardson, Helmut G. Rennke, Meletios A. Dimopoulos, Efstathios Kastritis, Giada Bianchi   +16 more
doaj   +2 more sources

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

PLoS 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, Dávid Szakács, Eszter Boros, Dávid Héja, Eszter Vígh, Noémi Sándor, Mihály Józsi, Gábor Oroszlán, József Dobó, Péter Gál, Gábor Pál   +10 more
doaj   +3 more sources