Results 21 to 30 of about 60,853 (248)

Chimeric Proteins Containing MAP-1 and Functional Domains of C4b-Binding Protein Reveal Strong Complement Inhibitory Capacities

Frontiers in Immunology, 2018
The complement system is a tightly regulated network of proteins involved in defense against pathogens, inflammatory processes, and coordination of the innate and adaptive immune responses.
Cecilie E. Hertz, Rafael Bayarri-Olmos, Nikolaj Kirketerp-Møller, Sander van Putten, Katrine Pilely, Mikkel-Ole Skjoedt, Peter Garred   +6 more
doaj   +1 more source

The role of salivary and intestinal complement system inhibitors in the midgut protection of triatomines and mosquitoes. [PDF]

PLoS ONE, 2009
Saliva of haematophagous arthropods contain biomolecules involved directly or indirectly with the haematophagy process, and among them are encountered some complement system inhibitors.
Veruska Cavalcanti Barros, Jéssica Góes Assumpção, André Miranda Cadete, Vânia Cristina Santos, Reginaldo Roris Cavalcante, Ricardo Nascimento Araújo, Marcos Horácio Pereira, Nelder Figueiredo Gontijo   +7 more
doaj   +1 more source

The classical pathway triggers pathogenic complement activation in membranous nephropathy

Nature Communications, 2023
It is generally thought that complement activation in human membranous nephropathy (MN) occurs predominantly via the lectin or alternative pathway. Here, the authors show that the classical pathway is the dominant form of complement activation in MN and ...
Larissa Seifert, Gunther Zahner, Catherine Meyer-Schwesinger, Naemi Hickstein, Silke Dehde, Sonia Wulf, Sarah M. S. Köllner, Renke Lucas, Dominik Kylies, Sarah Froembling, Stephanie Zielinski, Oliver Kretz, Anna Borodovsky, Sergey Biniaminov, Yanyan Wang, Hong Cheng, Friedrich Koch-Nolte, Peter F. Zipfel, Helmut Hopfer, Victor G. Puelles, Ulf Panzer, Tobias B. Huber, Thorsten Wiech, Nicola M. Tomas   +23 more
doaj   +1 more source

Heme Interacts with C1q and Inhibits the Classical Complement Pathway [PDF]

Journal of Biological Chemistry, 2011
C1q is the recognition subunit of the first component of the classical complement pathway. It participates in clearance of immune complexes and apoptotic cells as well as in defense against pathogens. Inappropriate activation of the complement contributes to cellular and tissue damage in different pathologies, urging the need for the development of ...
Boris P. Atanasov, Véronique Frémeaux-Bacchi, Jordan D. Dimitrov, Jordan D. Dimitrov, Jordan D. Dimitrov, Lubka T. Roumenina, Lubka T. Roumenina, Lubka T. Roumenina, Krastio T. Popov, Maria Radanova, Sébastien Lacroix-Desmazes, Sébastien Lacroix-Desmazes, Sébastien Lacroix-Desmazes, Srini V. Kaveri, Srini V. Kaveri, Srini V. Kaveri   +15 more
openaire   +4 more sources

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

The Functional Amyloid Curli Protects Escherichia coli against Complement-Mediated Bactericidal Activity

Biomolecules, 2018
Escherichia coli strains may be beneficial or pathogenic. Many E. coli strains that cause human disease, especially those responsible for bacteremia and sepsis, express virulence factors that impart resistance to the complement system.
Steven G. Biesecker, Lauren K. Nicastro, R. Paul Wilson, Çağla Tükel   +3 more
doaj   +1 more source

Peptide Inhibitor of Complement C1 (PIC1) Rapidly Inhibits Complement Activation after Intravascular Injection in Rats. [PDF]

PLoS ONE, 2015
The complement system has been increasingly recognized to play a pivotal role in a variety of inflammatory and autoimmune diseases. Consequently, therapeutic modulators of the classical, lectin and alternative pathways of the complement system are ...
Julia A Sharp, Pamela S Hair, Haree K Pallera, Parvathi S Kumar, Clifford T Mauriello, Julius O Nyalwidhe, Cody A Phelps, Dalnam Park, Nicole M Thielens, Stephen M Pascal, Waldon Chen, Diane M Duffy, Frank A Lattanzio, Kenji M Cunnion, Neel K Krishna   +14 more
doaj   +1 more source

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

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   +1 more source

Different Complement Activation Pathways Underly Cognitive Impairment and Type 2 Diabetes Mellitus Combined With Cognitive Impairment

Frontiers in Aging Neuroscience, 2022
BackgroundThe immune response and the complement system are associated with cognitive impairment and diabetes mellitus, respectively. Activation of the complement system in these diseases occurs mainly through either the classical pathway or the ...
Zhenxing Li, Weiwei Zhang, Feng Gao, Feng Gao, Qiqiang Tang, Dongmei Kang, Yong Shen, Yong Shen   +7 more
doaj   +1 more source

Continual Low-Level Activation of the Classical Complement Pathway [PDF]

The Journal of Experimental Medicine, 2001
There is evidence that the classical complement pathway may be activated via a “C1-tickover” mechanism, analogous to the C3-tickover of the alternative pathway. We have quantitated and characterized this pathway of complement activation. Analysis of freshly collected mouse and human plasma revealed that spontaneous C3 activation rapidly occurred with ...
Manderson, A, Pickering, Mark, Botto, Marina, Walport, Mark J, Parish, Christopher   +4 more
openaire   +5 more sources