Results 81 to 90 of about 712,823 (260)

Spirochetal Lipoproteins and Immune Evasion. [PDF]

open access: yes, 2017
Spirochetes are a major threat to public health. However, the exact pathogenesis of spirochetal diseases remains unclear. Spirochetes express lipoproteins that often determine the cross talk between the host and spirochetes.
Boyadjian, Ani   +2 more
core   +1 more source

Fasciola hepatica is refractory to complement killing by preventing attachment of mannose binding lectin (MBL) and inhibiting MBL-associated serine proteases (MASPs) with serpins.

open access: yesPLoS Pathogens, 2022
The complement system is a first-line innate host immune defence against invading pathogens. It is activated via three pathways, termed Classical, Lectin and Alternative, which are mediated by antibodies, carbohydrate arrays or microbial liposaccharides,
Carolina De Marco Verissimo   +5 more
doaj   +1 more source

Structure of Complement Component C2a: Implications for Convertase Formation and Substrate Binding [PDF]

open access: yes, 1906
SummaryC2a provides the catalytic center to the convertase complexes of the classical and lectin-binding pathways of complement activation. We determined two crystal structures of full-length C2a, with and without a pseudo ligand bound.
Fin J. Milder   +47 more
core   +1 more source

Role for Complement C5 in Eosinophilic Inflammation of Severe Asthma

open access: yesAllergy, EarlyView.
Complement activation module, particularly C5, is positively associated with eosinophilic inflammation in severe asthma cohorts. Elevated C5 expression correlates with poor lung function improvement and persistent eosinophilic inflammation. Mouse model studies confirm that C5 exacerbates eosinophilic inflammation, highlighting its potential as a ...
Cong Dong   +217 more
wiley   +1 more source

REV-ERBα mediates complement expression and diurnal regulation of microglial synaptic phagocytosis

open access: yeseLife, 2020
The circadian clock regulates various aspects of brain health including microglial and astrocyte activation. Here, we report that deletion of the master clock protein BMAL1 in mice robustly increases expression of complement genes, including C4b and C3 ...
Percy Griffin   +7 more
doaj   +1 more source

Carriership of a defective tenascin-X gene in steroid 21-hydroxylase deficiency patients: TNXB -TNXA hybrids in apparent large-scale gene conversions [PDF]

open access: yes, 2002
Steroid 21-hydroxylase deficiency is caused by a defect in the CYP21A2 gene. CYP21A2, the adjacent complement C4 gene and parts of the flanking genes RP1 and TNXB constitute a tandemly duplicated arrangement in the central (class III ...
Degenhart, H.J. (Herman)   +2 more
core   +2 more sources

A covalent dimer of complement C4b serves as a subunit of a novel C5 convertase that involves no C3 derivatives.

open access: yesJournal of Immunology, 1991
A C intermediate, LAC14, was prepared from TNP-aminocaproyl liposomes sensitized with anti-TNP antibody (Ab) and purified human C1 and C4. LAC14, containing radiolabeled C4, was analyzed by SDS-PAGE followed by autoradiography, and yielded a 210-kDa band
T. Masaki   +5 more
semanticscholar   +1 more source

Neoadjuvant Therapy‐Induced Remodeling in Pancreatic Ductal Adenocarcinoma: Multimodal Spatial Analysis and Prognosis

open access: yesCancer Science, EarlyView.
Using integrated spatial pathomics and transcriptomics, we show that neoadjuvant therapy (NAT) in pancreatic ductal adenocarcinoma (PDAC) induces substantial tumor microenvironment remodeling that is not captured by tumor regression grading (TRG) alone.
Xiaofei Zhang   +16 more
wiley   +1 more source

Borrelia burgdorferi BBK32 Inhibits the Classical Pathway by Blocking Activation of the C1 Complement Complex [PDF]

open access: yes, 2016
Citation: Garcia, B. L., Zhi, H., Wager, B., Hook, M., & Skare, J. T. (2016). Borrelia burgdorferi BBK32 Inhibits the Classical Pathway by Blocking Activation of the C1 Complement Complex. Plos Pathogens, 12(1), 28.
A Alitalo   +101 more
core   +4 more sources

Enolase of Streptococcus pneumoniae Binds Human Complement Inhibitor C4b-Binding Protein and Contributes to Complement Evasion [PDF]

open access: yesThe Journal of Immunology, 2012
Abstract Streptococcus pneumoniae (pneumococcus) is a pathogen that causes severe local and life-threatening invasive diseases, which are associated with high mortality rates. Pneumococci have evolved several strategies to evade the host immune system, including complement to disseminate and to survive in various host niches.
Vaibhav, Agarwal   +5 more
openaire   +2 more sources

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