Results 41 to 50 of about 14,253 (157)

Classical and alternate complement factor overexpression in non-obese weight matched women with polycystic ovary syndrome does not correlate with vitamin D

Frontiers in Endocrinology, 2022
IntroductionWomen with polycystic ovary syndrome (PCOS) exhibit complement factor expression changes that may be obesity-driven rather than an intrinsic facet of PCOS; furthermore, complement changes have been associated with vitamin D deficiency, a ...
Abu Saleh Md Moin, Thozhukat Sathyapalan, Alexandra E. Butler, Stephen L. Atkin   +3 more
doaj   +1 more source

Go Green or Go Digital? A Set‐Theoretic Perspective of Incumbents' Paths to Success

Creativity and Innovation Management, EarlyView.
ABSTRACT In response to growing pressures for environmental sustainability and technological advancement, this study examines how firms can effectively integrate green and digital innovations within ambidextrous strategies to enhance performance. Using fuzzy‐set Qualitative Comparative Analysis (fsQCA) on a sample of 175 German manufacturing and ...
Bettina Mayr
wiley   +1 more source

Functional Analysis of Variants in Complement Factor I Identified in Age-Related Macular Degeneration and Atypical Hemolytic Uremic Syndrome

Frontiers in Immunology, 2022
Complement factor I (FI) is a central inhibitor of the complement system, and impaired FI function increases complement activation, contributing to diseases such as age-related macular degeneration (AMD) and atypical hemolytic uremic syndrome (aHUS ...
Sarah de Jong, Anita de Breuk, Bjorn Bakker, Suresh Katti, Carel B. Hoyng, Sara C. Nilsson, Anna M. Blom, Lambert P. van den Heuvel, Lambert P. van den Heuvel, Lambert P. van den Heuvel, Anneke I. den Hollander, Anneke I. den Hollander, Elena B. Volokhina, Elena B. Volokhina, Elena B. Volokhina   +14 more
doaj   +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, Priyanka Khatri, Youssif M. Ali, Chanuka H. Arachchilage, Gregory Demopulos, Kirsten Baillie, Kelly L. Miners, Kristin Ladell, Samantha A. Jones, Helen E. Davies, David A. Price, Wioleta M. Zelek, B. Paul Morgan, Wilhelm J. Schwaeble, Nicholas J. Lynch   +14 more
wiley   +1 more source

The Staphylococcus aureus protein Sbi acts as a complement inhibitor and forms a tripartite complex with host complement Factor H and C3b.

PLoS Pathogens, 2008
The Gram-positive bacterium Staphylococcus aureus, similar to other pathogens, binds human complement regulators Factor H and Factor H related protein 1 (FHR-1) from human serum.
Katrin Haupt, Michael Reuter, Jean van den Elsen, Julia Burman, Steffi Hälbich, Julia Richter, Christine Skerka, Peter F Zipfel   +7 more
doaj   +1 more source

Human factor H-related protein 2 (CFHR2) regulates complement activation. [PDF]

PLoS ONE, 2013
Mutations and deletions within the human CFHR gene cluster on chromosome 1 are associated with diseases, such as dense deposit disease, CFHR nephropathy or age-related macular degeneration. Resulting mutant CFHR proteins can affect complement regulation.
Hannes U Eberhardt, Denise Buhlmann, Peter Hortschansky, Qian Chen, Sascha Böhm, Markus J Kemper, Reinhard Wallich, Andrea Hartmann, Teresia Hallström, Peter F Zipfel, Christine Skerka   +10 more
doaj   +1 more source

Inflammatory and Immunological Basis of Periodontal Diseases

Journal of Periodontal Research, EarlyView.
The periodontal lesion emerges as an evolving immunological battlefield, where host–microbiome interactions, dysregulated immune responses, fragile resolution mechanisms, and inflammophilic dysbiosis converge to shift the balance from homeostasis to unrestrained tissue destruction.
Giacomo Baima, Marion Arce, Mario Romandini, Thomas Van Dyke   +3 more
wiley   +1 more source

The Murine Factor H-Related Protein FHR-B Promotes Complement Activation

Frontiers in Immunology, 2017
Factor H-related (FHR) proteins consist of varying number of complement control protein domains that display various degrees of sequence identity to respective domains of the alternative pathway complement inhibitor factor H (FH). While such FHR proteins
Marcell Cserhalmi, Ádám I. Csincsi, Zoltán Mezei, Anne Kopp, Mario Hebecker, Barbara Uzonyi, Mihály Józsi   +6 more
doaj   +1 more source

Multiple activities of LigB potentiate virulence of Leptospira interrogans: inhibition of alternative and classical pathways of complement. [PDF]

PLoS ONE, 2012
Microbial pathogens acquire the immediate imperative to avoid or counteract the formidable defense of innate immunity as soon as they overcome the initial physical barriers of the host. Many have adopted the strategy of directly disrupting the complement
Henry A Choy
doaj   +1 more source

CipA mediates complement resistance of Acinetobacter baumannii by formation of a factor I-dependent quadripartite assemblage

Frontiers in Immunology, 2022
Multidrug-resistant Acinetobacter baumannii is known to be one of the leading pathogens that cause severe nosocomial infections. To overcome eradication by the innate immune system during infection, A.
Julia I. Ries, Marie Heß, Noura Nouri, Thomas A. Wichelhaus, Stephan Göttig, Franco H. Falcone, Peter Kraiczy   +6 more
doaj   +1 more source