Results 31 to 40 of about 76,398 (257)

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

open access: yesBiomolecules, 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   +3 more
doaj   +1 more source

Deficient Classical Complement Pathway Activity in Newborn Sera [PDF]

open access: yesPediatric Research, 1983
Summary: The bactericidal activity of 20 maternal-neonatal paired sera was assessed employing a clinical type la, group B streptococcal isolate, strain 515, known to be opsonized by the classical complement pathway in a non-antibody dependent fashion.
M S, Edwards   +4 more
openaire   +2 more sources

Complementary Roles of the Classical and Lectin Complement Pathways in the Defense against Aspergillus fumigatus

open access: yesFrontiers in Immunology, 2016
Aspergillus fumigatus infections are associated with a high mortality rate for immunocompromised patients. The complement system is considered to be important in protection against this fungus, yet the course of activation is unclear.
Anne Rosbjerg   +5 more
doaj   +1 more source

Salvianolic acid A alleviates lipopolysaccharide-induced disseminated intravascular coagulation by inhibiting complement activation

open access: yesBMC Complementary Medicine and Therapies, 2022
Introduction Disseminated intravascular coagulation (DIC) is a syndrome characterized by coagulopathy, microthrombus, and multiple organ failure. The complement system in DIC is overactivated, and the functions of complement and coagulation pathways are ...
Qi-Yun Zhang   +7 more
doaj   +1 more source

Gain-of-Function Mutations R249C and S250C in Complement C2 Protein Increase C3 Deposition in the Presence of C-Reactive Protein

open access: yesFrontiers in Immunology, 2021
The impairment of the alternative complement pathway contributes to rare kidney diseases such as atypical hemolytic uremic syndrome (aHUS) and C3 glomerulopathy (C3G).
Aleksandra Urban   +15 more
doaj   +1 more source

Carbamylation of immunoglobulin abrogates activation of the classical complement pathway [PDF]

open access: yesEuropean Journal of Immunology, 2014
Post‐translational modifications of proteins significantly affect their structure and function. The carbamylation of positively charged lysine residues to form neutral homoitrulline occurs primarily under inflammatory conditions through myeloperoxidase‐dependent cyanate (CNO−) formation.
Koro, Catalin   +12 more
openaire   +7 more sources

C1q acts in the tumour microenvironment as a cancer-promoting factor independently of complement activation

open access: yesNature Communications, 2016
C1q is known to initiate the activation of the complement classical pathway. Here, the authors show the C1q is expressed in the tumour microenvironment and can promote cancer cell migration and adhesion in a complement activation-independent manner.
Roberta Bulla   +9 more
doaj   +1 more source

Echinococcus multilocularis Calreticulin Interferes with C1q-Mediated Complement Activation

open access: yesTropical 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   +8 more
doaj   +1 more source

Activation of the classical pathway of complement by rheumatoid factors [PDF]

open access: yesArthritis & Rheumatism, 1982
AbstractA simple, sensitive solid‐phase radioimmunoassay to quantitate the activation of the classical pathway of complement by rheumatoid factor (RF) is described. RF (purified, in serum or synovial fluid) was bound to reduced and alkylated IgG adsorbed to polyvinyl chloride microtiter plates and reacted with diluted normal human serum (complement ...
Umesh K. Sabharwal   +5 more
openaire   +1 more source

In Vitro Modulation of Complement Activation by Therapeutically Prospective Analogues of the Marine Polychaeta Arenicin Peptides

open access: yesMarine Drugs, 2022
The widespread resistance to antibiotics in pathogenic bacteria makes the development of a new generation of antimicrobials an urgent task. The development of new antibiotics must be accompanied by a comprehensive study of all of their biological ...
Ilia A. Krenev   +8 more
doaj   +1 more source

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