Results 31 to 40 of about 505,979 (246)

Entamoeba histolytica Develops Resistance to Complement Deposition and Lysis after Acquisition of Human Complement-Regulatory Proteins through Trogocytosis

mBio, 2022
Entamoeba histolytica is the cause of amoebiasis. The trophozoite (amoeba) form of this parasite is capable of invading the intestine and can disseminate through the bloodstream to other organs.
Hannah W. Miller, Tammie S. Y. Tam, Katherine S. Ralston   +2 more
doaj   +1 more source

Identification and functional characterisation of Complement Regulator Acquiring Surface Protein-1 of serum resistant Borrelia garinii OspA serotype 4 [PDF]

, 2010
Background: B. burgdorferi sensu lato (sl) is the etiological agent of Lyme borreliosis in humans. Spirochetes have adapted themselves to the human immune system in many distinct ways.
Peter F. Zipfel, Dam, A.P. van, Schuijt, Tim J., Kraiczy, Peter, Nathalie D. van Burgel, Nathalie D. van Burgel, van Burgel Nathalie D, Burgel, N.D. van, Burgel, Nathalie D. van, Schuijt Tim J, Tim J. Schuijt, Kraiczy Peter, Schuijt, T.J., van Dam Alje P, Zipfel Peter F, Kraiczy, P., Zipfel, Peter F., Alje P. van Dam, Peter Kraiczy, Zipfel, P.F., Dam, Alje P. van   +20 more
core   +1 more source

Hide and seek: how Lyme disease spirochetes overcome complement attack

Frontiers in Immunology, 2016
Overcoming the first line of the innate immune system is a general hallmark of pathogenic microbes to avoid recognition and to enter the human host.
Peter Kraiczy
doaj   +1 more source

Hijacking the human complement inhibitor C4b-binding protein by the sporozoite stage of the Plasmodium falciparum parasite

Frontiers in Immunology, 2022
The complement system is considered the first line of defense against pathogens. Hijacking complement regulators from blood is a common evasion tactic of pathogens to inhibit complement activation on their surfaces.
Ayman Khattab, Ayman Khattab, Mikel Rezola, Marta Barroso, Mikael Kyrklund, Mikael Kyrklund, Tero Pihlajamaa, Tobias L. Freitag, Geert-Jan van Gemert, Teun Bousema, Perttu Permi, Perttu Permi, Ossi Turunen, Ossi Turunen, Robert Sauerwein, Adrian J. F. Luty, Seppo Meri, Seppo Meri, Seppo Meri   +18 more
doaj   +1 more source

The grand escape – how pathogens outsmart the human complement system

Immunobiology
Infectious diseases remain a significant cause of mortality and morbidity worldwide. Complement is a critical component in the defense against pathogens and despite their great differences, viruses, bacteria, fungi, and protists have all developed ...
A.A. Nowacka, L. Sordo Vieira, V. Petr, B. Fageräng, R. Würzner, M. Ohms   +5 more
doaj   +1 more source

CspA from Borrelia burgdorferi Inhibits the Terminal Complement Pathway

mBio, 2013
In order to survive and persist in an immunocompetent human host, Borrelia burgdorferi controls the human immune attack and blocks the damaging effects of the activated complement system.
Teresia Hallström, Corinna Siegel, Matthias Mörgelin, Peter Kraiczy, Christine Skerka, Peter F. Zipfel   +5 more
doaj   +1 more source

Complement in malaria : immune evasion strategies and role in protective immunity [PDF]

, 2020
The malaria parasite has for long been thought to escape host complement attack as a survival strategy. However, it was only recently that complement evasion mechanisms of the parasite were described.
Kiyuka, Patience Kerubo, Ayman Khattab, Patience Kerubo Kiyuka, Meri, Seppo, Seppo Meri, Khattab, Ayman   +5 more
core   +1 more source

Bacterial Outer Membrane Vesicles Induce Vitronectin Release Into the Bronchoalveolar Space Conferring Protection From Complement-Mediated Killing

Frontiers in Microbiology, 2018
Pathogens causing pneumonia utilize the complement regulator vitronectin to evade complement-mediated killing. Although vitronectin is associated with several chronic lung diseases, the role of bronchoalveolar vitronectin in pneumonia has not been ...
Magnus Paulsson, Karlhans F. Che, Jonas Ahl, Johan Tham, Linda Sandblad, Margaretha E. Smith, Ingemar Qvarfordt, Yu-Ching Su, Anders Lindén, Anders Lindén, Kristian Riesbeck   +10 more
doaj   +1 more source

Echinococcus multilocularis Calreticulin Interferes with C1q-Mediated Complement Activation

Tropical Medicine and Infectious Disease, 2023
As a zoonotic disease caused by Echinococcus multilocularis larvae, alveolar echinococcosis (AE) is one of the most severe forms of parasitic infection. Over a long evolutional process E.
Siqi Xian, Lujuan Chen, Yan Yan, Jianfang Chen, Guixia Yu, Yuxiao Shao, Bin Zhan, Yanhai Wang, Limei Zhao   +8 more
doaj   +1 more source

A gammaherpesvirus complement regulatory protein promotes initiation of infection by activation of protein kinase Akt/PKB. [PDF]

, 2010
Viruses have evolved to evade the host's complement system. The open reading frames 4 (ORF4) of gammaherpesviruses encode homologs of regulators of complement activation (RCA) proteins, which inhibit complement activation at the level of C3 and C4 ...
Stewart, James P., Stipan, J., Adler, Heiko, James P Stewart, Adler Barbara, Adler, Barbara, Heiko Adler, Beatrix Steer, Barbara Adler, Jonjic Stipan, Stipan Jonjic, Steer, Beatrix, Steer Beatrix, Steer, B., Adler Heiko, Stewart James P., Adler, H., Adler, B., Jonjic, Stipan, James P. Stewart, Stewart, J.P.   +20 more
core   +1 more source