Results 21 to 30 of about 2,642,556 (405)

Association of genetic variants in complement factor H and factor H-related genes with systemic lupus erythematosus susceptibility. [PDF]

PLoS Genetics, 2011
Systemic lupus erythematosus (SLE), a complex polygenic autoimmune disease, is associated with increased complement activation. Variants of genes encoding complement regulator factor H (CFH) and five CFH-related proteins (CFHR1-CFHR5) within the ...
Jian Zhao, Hui Wu, Melanie Khosravi, Huijuan Cui, Xiaoxia Qian, Jennifer A Kelly, Kenneth M Kaufman, Carl D Langefeld, Adrienne H Williams, Mary E Comeau, Julie T Ziegler, Miranda C Marion, Adam Adler, Stuart B Glenn, Marta E Alarcón-Riquelme, BIOLUPUS Network, GENLES Network, Bernardo A Pons-Estel, John B Harley, Sang-Cheol Bae, So-Young Bang, Soo-Kyung Cho, Chaim O Jacob, Timothy J Vyse, Timothy B Niewold, Patrick M Gaffney, Kathy L Moser, Robert P Kimberly, Jeffrey C Edberg, Elizabeth E Brown, Graciela S Alarcon, Michelle A Petri, Rosalind Ramsey-Goldman, Luis M Vilá, John D Reveille, Judith A James, Gary S Gilkeson, Diane L Kamen, Barry I Freedman, Juan-Manuel Anaya, Joan T Merrill, Lindsey A Criswell, R Hal Scofield, Anne M Stevens, Joel M Guthridge, Deh-Ming Chang, Yeong Wook Song, Ji Ah Park, Eun Young Lee, Susan A Boackle, Jennifer M Grossman, Bevra H Hahn, Timothy H J Goodship, Rita M Cantor, Chack-Yung Yu, Nan Shen, Betty P Tsao   +56 more
doaj   +9 more sources

Complement-Coagulation Cross-talk: Factor H-mediated regulation of the Complement Classical Pathway activation by fibrin clots [PDF]

Frontiers in Immunology
The classical pathway of the complement system is activated by the binding of C1q in the C1 complex to the target activator, including immune complexes. Factor H is regarded as the key downregulatory protein of the complement alternative pathway. However,
Yu-Hoi Kang, Yu-Hoi Kang, Praveen M. Varghese, Ahmad Al Aiyan, Kirsten Pondman, Uday Kishore, Uday Kishore, Robert B. Sim   +7 more
doaj   +4 more sources

C3 Glomerulonephritis associated with Anti-complement Factor H Autoantibodies in an Adolescent Male: A Case Report [PDF]

Childhood Kidney Diseases, 2021
C3 glomerulonephritis (C3GN), a rare condition associated with dysregulation of the alternative pathway of the complement system, is histopathologically characterized by isolated or dominant C3 deposition in the renal glomeruli.
HyeSun Hyun, Hee Gyung Kang, UiJu Cho, Il-Soo Ha, Hae Il Cheong   +4 more
doaj   +1 more source

Cross-Talk between the Complement Pathway and the Contact Activation System of Coagulation: Activated Factor XI Neutralizes Complement Factor H

Journal of Immunology, 2021
Key Points FXIa cleaves CFH at the R341/R342 bonds at the end of the CCP 6 domain of CFH. FXIa reduces CFH cofactor and decay‐accelerating activity and binding to ECs. CFH binds FXI and inhibits FXI activation by either thrombin or FXIIa.
C. Puy, J. Pang, Stéphanie E. Reitsma, C. Lorentz, E. Tucker, D. Gailani, A. Gruber, F. Lupu, O. McCarty   +8 more
semanticscholar   +1 more source

Borrelia recurrentis employs a novel multifunctional surface protein with anti-complement, anti-opsonic and invasive potential to escape innate immunity [PDF]

, 2009
Borrelia recurrentis, the etiologic agent of louse-borne relapsing fever in humans, has evolved strategies, including antigenic variation, to evade immune defence, thereby causing severe diseases with high mortality rates.
AG Barbour, AG Barbour, AG Barbour, AG Barbour, AS Coleman, C Neeleman, C Siegel, C Skerka, CA Brissette, Christiane Brenner, CS Brooks, D Raoult, David M. Ojcius, DJ Grab, E Rossmann, E Rossmann, GD Wieland, H Fuchs, J Bunikis, JA Gebbia, JC Scott, JC Setubal, JL Coleman, JV McDowell, K Hartmann, KM Hovis, KM Hovis, KO Sundnes, L Houhamdi, Markus M. Simon, MD Kramer, Melanie Schott, MK Pangburn, NM Ras, P Kraiczy, P Kraiczy, P Kraiczy, P Kraiczy, P Kraiczy, P Kraiczy, P Stewart, Peter F. Zipfel, Peter Kraiczy, PF Zipfel, PF Zipfel, PM Southern, RD Horstmann, Reinhard Wallich, S Hammerschmidt, S Kuhn, S Kuhn, S Poltermann, S Ram, Sally J. Cutler, SH Rooijakkers, SJ Cutler, Sonja Grosskinsky, T Meri, T Meri, WR Zuckert   +59 more
core   +11 more sources

Ramsey numbers of cycles versus general graphs [PDF]

Forum of Mathematics, Sigma , Volume 11 , 2023 , e10, 2021
The Ramsey number $R(F,H)$ is the minimum number $N$ such that any $N$-vertex graph either contains a copy of $F$ or its complement contains $H$. Burr in 1981 proved a pleasingly general result that for any graph $H$, provided $n$ is sufficiently large, a natural lower bound construction gives the correct Ramsey number involving cycles: $R(C_n,H)=(n-1)(
arxiv   +1 more source

Complement Factor H-Related Proteins FHR1 and FHR5 Interact With Extracellular Matrix Ligands, Reduce Factor H Regulatory Activity and Enhance Complement Activation

Frontiers in Immunology, 2022
Components of the extracellular matrix (ECM), when exposed to body fluids may promote local complement activation and inflammation. Pathologic complement activation at the glomerular basement membrane and at the Bruch’s membrane is implicated in renal ...
Alexandra Papp, Krisztián Papp, Barbara Uzonyi, Barbara Uzonyi, Marcell Cserhalmi, Ádám I. Csincsi, Zsóka Szabó, Zsófia Bánlaki, David Ermert, Zoltán Prohászka, Zoltán Prohászka, Anna Erdei, Anna Erdei, Viviana P. Ferreira, Anna M. Blom, Mihály Józsi, Mihály Józsi   +16 more
doaj   +1 more source

Loss of Complement Factor H impairs antioxidant capacity and energy metabolism of human RPE cells

Scientific Reports, 2020
Polymorphisms in the Complement Factor H (CFH) gene, coding for the Factor H protein (FH), can increase the risk for age-related macular degeneration (AMD).
A. Armento, Sabina Honisch, Vasiliki Panagiotakopoulou, Inga Sonntag, Anke Jacob, S. Bolz, E. Kilger, M. Deleidi, Simon J. Clark, M. Ueffing   +9 more
semanticscholar   +1 more source

Complement factor H-deficient mice develop spontaneous hepatic tumors.

Journal of Clinical Investigation, 2020
Hepatocellular carcinoma (HCC) is difficult to detect, carries a poor prognosis, and is one of few cancers with an increasing yearly incidence. Molecular defects in complement factor H (CFH), a critical regulatory protein of the complement alternative ...
J. Laskowski, B. Renner, M. Pickering, N. Serkova, P. Smith-Jones, E. Clambey, R. Nemenoff, J. Thurman   +7 more
semanticscholar   +1 more source

Clinical relevance of glomerular IgM deposition in patients with lupus nephritis

BMC Immunology, 2021
Background The aim of the study was to investigate the clinical relevance of IgM deposition in patients with lupus nephritis (LN) in a large cohort. Results 217 patients with renal biopsy-proven active LN were enrolled.
Fengmei Wang, Jirong Yu, Lei Zhang, Yan Zhang, Jie Zhang, Bicheng Liu, Xiaowei Yang   +6 more
doaj   +1 more source