Complement c1q - Open Access .click

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Anti-SARS-Cov-2 S-RBD IgG Formed after BNT162b2 Vaccination Can Bind C1q and Activate Complement

Journal of Immunology Research, 2022
Background. The ability of vaccine-induced antibodies to bind C1q could affect pathogen neutralization. In this study, we investigated C1q binding and subsequent complement activation by anti-spike (S) protein receptor-binding domain (RBD) specific ...
Anas H. A. Abu-Humaidan +4 more
doaj +1 more source

International Guideline on the Diagnosis and Management of Pediatric Patients With Hereditary Angioedema

Allergy, EarlyView.
ABSTRACT Hereditary angioedema (HAE) with C1 inhibitor deficiency is a rare disease characterized by unpredictable episodes of tissue swelling (angioedema), which, in most cases, occur first under the age of 18 years, and entail a significant burden of disease not only for the patients but also for their families.
Henriette Farkas +128 more
wiley +1 more source

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

Nature 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

Subretinal macrophages produce classical complement activator C1q leading to the progression of focal retinal degeneration

Molecular Neurodegeneration, 2018
Background The role of the alternative complement pathway and its mediation by retinal microglia and macrophages, is well-established in the pathogenesis of Age-Related Macular Degeneration (AMD).
Haihan Jiao +7 more
doaj +1 more source

The International Guideline for the Definition, Classification, Diagnosis and Management of Urticaria

Allergy, EarlyView.
ABSTRACT This update and revision of the international guideline for urticaria was developed in accordance with the methods recommended by Cochrane and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) working group. It is an initiative of the Global Allergy and Asthma Excellence Network (GA2LEN) and its Urticaria and ...
T. Zuberbier +221 more
wiley +1 more source

Heme Interacts with C1q and Inhibits the Classical Complement Pathway [PDF]

Journal of Biological Chemistry, 2011
C1q is the recognition subunit of the first component of the classical complement pathway. It participates in clearance of immune complexes and apoptotic cells as well as in defense against pathogens. Inappropriate activation of the complement contributes to cellular and tissue damage in different pathologies, urging the need for the development of ...
Lubka T, Roumenina +7 more
openaire +2 more sources

Cancer‐Specific Antihuman Podoplanin Antibody chLpMab‐2f Exerts Antitumor Effects Against Pleural Mesothelioma

Cancer Science, EarlyView.
Cancer‐specific antihuman podoplanin antibody chLpMab‐2f exerted antibody‐dependent cellular cytotoxicity and complement‐dependent cytotoxicity against pleural mesothelioma (PM) cell lines. Additionally, chLpMab‐2f inhibited tumor progression in mice with subcutaneously and intrathoracically transplanted human PM cells.
Aito Yoshida +15 more
wiley +1 more source

Plasma complement C3 and C3a are increased in major depressive disorder independent of childhood trauma

BMC Psychiatry, 2022
Background Dysregulated complement system is linked to pathophysiology of major depressive disorder (MDD). Childhood trauma has been associated with an increased incidence of adult depression via a putative mechanism of immune activation.
Xianmei Luo +5 more
doaj +1 more source

Interactions between small leucine‐rich proteoglycans and proteases: implications for tissue homeostasis and pathology

The FEBS Journal, EarlyView.
Small leucine‐rich proteoglycans (SLRPs) are key modulators of extracellular matrix structure and signaling. Their proteolytic processing by MMPs (Matrix Metalloproteinases), ADAMTS (disintegrin and metalloprotease with thrombospondin motifs), and serine proteases generates bioactive fragments that regulate collagen remodeling, inflammation, and ...
Maria Konstantaraki +4 more
wiley +1 more source

Activation of the Lectin Pathway Drives Persistent Complement Dysregulation in Long COVID

Immunology, EarlyView.
The complement cascade, a series of blood proteins that assists in the recognition and neutralisation of pathogens, either independently or in conjunction with antibodies, is persistently activated in patients with long COVID. We found that blood plasma samples from patients with long COVID contained elevated concentrations of the mannan‐binding lectin‐
Samuel B. K. Keat +14 more
wiley +1 more source

c1q
complement
microglia

immune evasion
medicine
complement system

trichinella spiralis
classical pathway
classical complement activation