Results 31 to 40 of about 14,253 (157)

Increased deposition of C3b on red cells with low CR1 and CD55 in a malaria-endemic region of western Kenya: Implications for the development of severe anemia

BMC Medicine, 2008
Background Severe anemia due to Plasmodium falciparum malaria is a major cause of mortality among young children in western Kenya. The factors that lead to the age-specific incidence of this anemia are unknown.
Odera Michael M, Adhiambo Christine, Otieno Walter, Odhiambo Collins O, Stoute José A   +4 more
doaj   +1 more source

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

Frontiers 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, Nicholas M. Pearce, Joke Granneman, T. Harma C. Brondijk, Piet Gros   +4 more
doaj   +1 more source

Toxoplasma gondii Recruits Factor H and C4b-Binding Protein to Mediate Resistance to Serum Killing and Promote Parasite Persistence in vivo

Frontiers in Immunology, 2020
Regulating complement is an important step in the establishment of infection by microbial pathogens. Toxoplasma gondii actively resists complement-mediated killing in non-immune human serum (NHS) by inactivating C3b, however the precise molecular basis ...
Patricia M. Sikorski, Patricia M. Sikorski, Alessandra G. Commodaro, Michael E. Grigg   +3 more
doaj   +1 more source

Control of Complement Activation by the Long Pentraxin PTX3: Implications in Age-Related Macular Degeneration

Frontiers in Pharmacology, 2020
Dysregulation of the complement system is central to age-related macular degeneration (AMD), the leading cause of blindness in the developed world. Most of the genetic variation associated with AMD resides in complement genes, with the greatest risk ...
Matteo Stravalaci, Matteo Stravalaci, Francesca Davi, Raffaella Parente, Marco Gobbi, Barbara Bottazzi, Alberto Mantovani, Alberto Mantovani, Alberto Mantovani, Anthony J. Day, Simon J. Clark, Simon J. Clark, Mario R. Romano, Mario R. Romano, Antonio Inforzato, Antonio Inforzato   +15 more
doaj   +1 more source

Molecular mechanism of complement inhibition by the trypanosome receptor ISG65

eLife
African trypanosomes replicate within infected mammals where they are exposed to the complement system. This system centres around complement C3, which is present in a soluble form in serum but becomes covalently deposited onto the surfaces of pathogens ...
Alexander D Cook, Mark Carrington, Matthew K Higgins   +2 more
doaj   +1 more source

Exploring the involvement of the alternative complement pathway in non-infectious uveitis pathogenesis

Frontiers in Immunology, 2023
PurposeNon-infectious uveitis is a complex disease characterized by intraocular inflammation of the uveal area and the leading cause of vision impairment and blindness in young people globally.
Prerna Kulshrestha, Prerna Kulshrestha, Pallavi Goel, Somasheila Murthy, Mudit Tyagi, Soumvaya Basu, Pratik Gogri, Inderjeet Kaur   +7 more
doaj   +1 more source

The Distribution of Complement Proteins in Soft and Hard Coronas Impacts Macrophage Uptake of Nanoparticles

Advanced Healthcare Materials, EarlyView.
Protein corona plays a critical role in the biological behavior of nanoparticles. This study investigates the distribution of complement proteins in soft corona and their impact on the macrophage uptake of polymer nanoparticles. It underlines the significance of soft corona investigation for understanding in vivo performance of nanomedicines.
Ying Qiu, Tianchang He, Chunjie Miao, Xinyang Shi, Yuanyuan Niu, Volker Mailänder, Daniel Crespy, Katharina Landfester, Shuai Jiang   +8 more
wiley   +1 more source

Effects of Streptococcus pneumoniae strain background on complement resistance. [PDF]

PLoS ONE, 2011
Immunity to infections caused by Streptococcus pneumoniae is dependent on complement. There are wide variations in sensitivity to complement between S. pneumoniae strains that could affect their ability to cause invasive infections.
Catherine Hyams, Sophia Opel, William Hanage, Jose Yuste, Katie Bax, Birgitta Henriques-Normark, Brian G Spratt, Jeremy S Brown   +7 more
doaj   +1 more source

Low‐Temperature Fabrication of Thymosin β4‐Loaded Soluble Microneedles to Promote Wound Healing by Specific Binding to Downregulated Immune Regulators Vsig4 and IL22rɑ2

Advanced Healthcare Materials, EarlyView.
Schematic diagram depicting the fabrication and application of thymosin β4 (Tβ4)‐loaded microneedle patches for wound treatment. The Tβ4 was loaded into chitosan (CS) and sucrose MNs under mild conditions (4°C, 65% relative humidity). The Tβ4 MN patch specifically binds to the downregulated immune regulators Vsig4 and IL22rα2, thereby accelerating ...
Shilong He, Mei Yuan, Changkang Feng, Yixuan Zhang, Jinjing Che   +4 more
wiley   +1 more source

Proteomic Analysis of Golden Sputum Reveals Pulmonary Complement Activation During Acute Chest Syndrome in Children With Sickle Cell Disease

American Journal of Hematology, EarlyView.
ABSTRACT Acute chest syndrome (ACS) is one of the most common severe complications of sickle cell disease (SCD). In recent years, a major role of inflammation and innate immunity has been evidenced, but ACS pathophysiology remains incompletely understood, and therapeutic options are limited.
Slimane Allali, Nabiha Sbeih, Rachel Rignault‐Bricard, Johanna Bruce, Morgane Le Gall, Claire Heilbronner, Noemie de Cacqueray, Sofia Angyalosy, Melissa Taylor, Joséphine Brice, Mariane de Montalembert, Martina Bevacqua, Emilie‐Fleur Gautier, Olivier Hermine, Thiago Trovati Maciel   +14 more
wiley   +1 more source