Results 41 to 50 of about 544,854 (305)

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

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

Infections with extracellular trypanosomes require control by efficient innate immune mechanisms and can result in the destruction of the mammalian humoral immune system [PDF]

open access: yes, 2020
Salivarian trypanosomes are extracellular parasites that affect humans, livestock, and game animals around the world. Through co-evolution with the mammalian immune system, trypanosomes have developed defense mechanisms that allow them to thrive in blood,
Magez, Stefan   +3 more
core   +1 more source

Lectin pathway proteins of the complement system in normotensive pregnancy and pre‐eclampsia [PDF]

open access: yesAmerican Journal of Reproductive Immunology, 2019
ProblemThe lectin pathway of the complement system may be involved in the pathogenesis of pre‐eclampsia. We aimed to investigate changes in serum concentrations of a broad range of lectin pathway proteins during normal pregnancy and their association with pre‐eclampsia, placental infarctions and intrauterine growth restriction (IUGR).Method of studyWe ...
Julie Brogaard Larsen   +6 more
openaire   +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

Proteins of the lectin pathway of the complement system activation: immunobiological functions, genetics and involvement in the pathogenesis of human diseases

open access: yesИнфекция и иммунитет, 2022
The complement system is the most ancient components in the innate immunity, mainly functioning to primarily eliminate bacterial agents intravascularly.
Marina V. Smolnikova   +1 more
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

Structural basis of complement membrane attack complex formation [PDF]

open access: yes, 2015
In response to complement activation, the membrane attack complex (MAC) assembles from fluid-phase proteins to form pores in lipid bilayers. MAC directly lyses pathogens by a ‘multi-hit’ mechanism; however, sublytic MAC pores on host cells activate ...
Bubeck, D   +3 more
core   +1 more source

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

open access: yesFrontiers 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   +6 more
doaj   +1 more source

CLONING OF THE 1.4-kb mRNA SPECIES OF HUMAN COMPLEMENT FACTOR H REVEALS A NOVEL MEMBER OF THE SHORT CONSENSUS REPEAT FAMILY RELATED TO THE CARBOXY TERMINAL OF THE CLASSICAL 150-kDa MOLECULE [PDF]

open access: yes, 1991
Three factor H mRNA species of 4.3 kb, 1.8 kb, and 1.4 kb are constitutively expressed in human liver. Having previously characterized full-length cDNA clones derived from the 4.3-kb and 1.8-kb factor mRNA, we report here the isolation and eucaryotic ...
Dierich, Manfred P.   +4 more
core   +2 more sources

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