Results 31 to 40 of about 533,270 (282)

Integration of a virus membrane protein into the lipid bilayer of target cells as a prerequisite for immune cytolysis [PDF]

open access: yes, 1979
Structural requirements for membrane antigens on target cells to mediate immune cytolysis were studied in a model system with purified membrane proteins from Semliki Forest virus (SFV). These SFV spike proteins were isolated in the form of detergent- and
Barz, D.   +3 more
core   +1 more source

Role of the complement system in the tumor microenvironment

open access: yesCancer Cell International, 2019
The complement system has traditionally been considered a component of innate immunity against invading pathogens and “nonself” cells. Recent studies have demonstrated the immunoregulatory functions of complement activation in the tumor microenvironment (
Ronghua Zhang   +4 more
doaj   +1 more source

Complement proteins in unexpected places: why we should be excited, not concerned! [version 1; peer review: 2 approved]

open access: yesF1000Research, 2020
The complement system consists of more than 30 plasma as well as cell surface proteins that together constitute a major arm of the immune system. The long-held belief is that most of the complement components are synthesized by hepatocytes in the liver ...
Berhane Ghebrehiwet
doaj   +1 more source

SARS-CoV-2 Exacerbates COVID-19 Pathology Through Activation of the Complement and Kinin Systems

open access: yesFrontiers in Immunology, 2021
Infection with SARS-CoV-2 triggers the simultaneous activation of innate inflammatory pathways including the complement system and the kallikrein-kinin system (KKS) generating in the process potent vasoactive peptides that contribute to severe acute ...
Anne G. Savitt   +13 more
doaj   +1 more source

Immune complexes in chronic Chagas disease patients are formed by exovesicles from Trypanosoma cruzi carrying the conserved MASP N-terminal region [PDF]

open access: yes, 2017
The exovesicles (EVs) are involved in pathologic host-parasite immune associations and have been recently used as biomarkers for diagnosis of infectious diseases.
De Pablos, Luis Miguel   +5 more
core   +3 more sources

Evasion Mechanisms Used by Pathogens to Escape the Lectin Complement Pathway

open access: yesFrontiers in Microbiology, 2017
The complement system is a crucial defensive network that protects the host against invading pathogens. It is part of the innate immune system and can be initiated via three pathways: the lectin, classical and alternative activation pathway.
Anne Rosbjerg   +3 more
doaj   +1 more source

Electrostatic Steering Accelerates C3d:CR2 Association. [PDF]

open access: yes, 2016
Electrostatic effects are ubiquitous in protein interactions and are found to be pervasive in the complement system as well. The interaction between complement fragment C3d and complement receptor 2 (CR2) has evolved to become a link between innate and ...
Dimitrios Morikis   +4 more
core   +2 more sources

Precision Medicine in Neurology: The Inspirational Paradigm of Complement Therapeutics

open access: yesPharmaceuticals, 2020
Precision medicine has emerged as a central element of healthcare science. Complement, a component of innate immunity known for centuries, has been implicated in the pathophysiology of numerous incurable neurological diseases, emerging as a potential ...
Maria Gavriilaki   +2 more
doaj   +1 more source

Measuring Total Classical Pathway and Activities of Individual Components of the Mouse Complement Pathway

open access: yesBio-Protocol, 2021
The complement system is a central component of innate immunity, responsible for recognition and killing of bacteria by tagging invaders through opsonisation, thereby promoting phagocytosis, and by direct lysis.
Wioleta Zelek
doaj   +1 more source

Complement System and C4d expression in cases of Membranous nephropathy

open access: yesBrazilian Journal of Nephrology
Introduction: Membranous nephropathy (MN) is one of the major causes of nephrotic syndrome. The complement system plays a key role in the pathophysiology of MN.
Fabiano Bichuette Custódio   +4 more
doaj   +1 more source

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