Results 31 to 40 of about 5,264 (155)

Insights Into Enhanced Complement Activation by Structures of Properdin and Its Complex With the C-Terminal Domain of C3b

open access: yesFrontiers in Immunology, 2019
Properdin enhances complement-mediated opsonization of targeted cells and particles for immune clearance. Properdin occurs as dimers, trimers and tetramers in human plasma, which recognize C3b-deposited surfaces, promote formation, and prolong the ...
Ramon M. van den Bos   +4 more
doaj   +1 more source

The alternative pathway of complement activation may be involved in the renal damage of human anti-glomerular basement membrane disease. [PDF]

open access: yesPLoS ONE, 2014
Linear deposition of IgG and complement 3 (C3) along glomerular basement membrane (GBM) is generally revealed in the kidneys of human anti-GBM disease. Our recent studies demonstrated the pathogenic role of complement activation in renal damage of this ...
Rui Ma   +9 more
doaj   +1 more source

Urinary Properdin and sC5b-9 Are Independently Associated With Increased Risk for Graft Failure in Renal Transplant Recipients

open access: yesFrontiers in Immunology, 2019
The pathophysiology of late kidney-allograft failure remains complex and poorly understood. Activation of filtered or locally produced complement may contribute to the progression of renal failure through tubular C5b-9 formation.
Rosa G. M. Lammerts   +9 more
doaj   +1 more source

Regulation of the terminal complement cascade in adipose tissue for control of its volume, cellularity, and fibrosis

open access: yesObesity, Volume 33, Issue 5, Page 839-850, May 2025.
Abstract White adipose tissue (WAT) is a reservoir for various pathogens and their products, such as lipopolysaccharides. Therefore, it must be equipped with a defense mechanism connected with the activation of innate immunity. This explains the phenomenon that adipocytes express components of the classical and alternative complement pathways, which ...
Ilja L. Kruglikov, Philipp E. Scherer
wiley   +1 more source

Human Properdin Modulates Macrophage: Mycobacterium bovis BCG Interaction via Thrombospondin Repeats 4 and 5

open access: yesFrontiers in Immunology, 2018
Mycobacterium tuberculosis can proficiently enter macrophages and diminish complement activation on its cell surface. Within macrophages, the mycobacterium can suppress macrophage apoptosis and survive within the intracellular environment. Previously, we
Maha Ahmed Al-Mozaini   +14 more
doaj   +1 more source

Endothelial damage and complement dysregulation in fetuses from pregnancies complicated by preeclampsia

open access: yesActa Obstetricia et Gynecologica Scandinavica, Volume 104, Issue 5, Page 829-838, May 2025.
Preeclampsia fetuses show an altered profile of endothelial damage and complement biomarkers, like increased adhesion molecules, prothrombotic state, oxidative stress, and reduced complement membrane attack complex deposition on endothelial cells. Abstract Introduction Our objective was to evaluate the endothelial function profile and complement system
Alex Ramos   +17 more
wiley   +1 more source

Properdin Modulates Complement Component Production in Stressed Human Primary Retinal Pigment Epithelium Cells

open access: yesAntioxidants, 2020
The retinal pigment epithelium (RPE) maintains visual function and preserves structural integrity of the retina. Chronic dysfunction of the RPE is associated with retinal degeneration, including age-related macular degeneration (AMD).
Nicole Schäfer   +6 more
doaj   +1 more source

Properdin: A Novel Target for Neuroprotection in Neonatal Hypoxic-Ischemic Brain Injury

open access: yesFrontiers in Immunology, 2019
Background: Hypoxic-ischemic (HI) encephalopathy is a major cause of neonatal mortality and morbidity, with a global incidence of 3 per 1,000 live births.
Claudia Sisa   +5 more
doaj   +1 more source

Exploring urine:serum fractional excretion ratios as potential biomarkers for lupus nephritis

open access: yesFrontiers in Immunology, 2022
ObjectivesThe goal of this exploratory study is to determine if urine:serum fractional excretion ratios can outperform the corresponding urinary biomarker proteins in identifying active renal disease in systemic lupus erythematosus (SLE).MethodsThirty ...
Samar A. Soliman   +6 more
doaj   +1 more source

Exosome‐Mediated Lectin Pathway and Resistin‐MIF‐AA Metabolism Axis Drive Immune Dysfunction in Immune Thrombocytopenia

open access: yesAdvanced Science, Volume 12, Issue 10, March 13, 2025.
Immune thrombocytopenia (ITP) is an autoimmune disorder marked by reduced platelet levels and heightened susceptibility to bleeding resulting from augmented autologous platelet destruction and diminished thrombopoiesis. It is found that the lectin pathway of the complement system, resistin, MIF, and AA metabolism may serve as promising targets for ...
Jin Li   +21 more
wiley   +1 more source

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