Results 41 to 50 of about 11,626 (172)

Staphylococcal exotoxin superantigens induce human immunodeficiency virus type 1 expression in naturally infected CD4+ T cells [PDF]

Journal of Virology, 1992
A high proportion of Staphylococcus aureus strains of human origin produce one or more exotoxins. In vivo, these toxins may give rise to a variety of clinical syndromes. In vitro, staphylococcal exotoxins have been shown to bind both to human leukocyte antigen (HLA) class II molecules on antigen-presenting cells and to the T-cell receptors on large ...
J E, Brinchmann, G, Gaudernack, E, Thorsby, F, Vartdal   +3 more
openaire   +2 more sources

Staphylococcal Superantigens Stimulate Epithelial Cells through CD40 To Produce Chemokines

mBio, 2019
Mucosal and skin tissues form barriers to infection by most bacterial pathogens. Staphylococcus aureus causes diseases across these barriers in part dependent on the proinflammatory properties of superantigens.
Patrick M. Schlievert, Michael P. Cahill, Bruce S. Hostager, Amanda J. Brosnahan, Aloysius J. Klingelhutz, Francoise A. Gourronc, Gail A. Bishop, Donald Y. M. Leung   +7 more
doaj   +1 more source

A Comprehensive Microbial Gene Catalog of the Human Airway Microbiome Across Anatomical Sites and Geographic Regions

Advanced Science, EarlyView.
An integrated Human Airway Microbiome Gene Catalog (iHAMGC) is constructed from 12,273 metagenomic airway samples, providing a high‐resolution reference of respiratory microbial genes. The catalog enables systematic exploration of taxonomic and functional variation across airway niches and geographic regions, revealing site‐specific and region ...
Qing Zhang, Dashu Li, Bo Liu, Yue Zhang, Min Li, Ruochun Guo, Yawen Ni, Shibin Chen, Biao Ni, Lijie Qiu, Guorui Xing, He Dong, Qiulong Yan, Shenghui Li, Xiaohui Zou, Bin Cao   +15 more
wiley   +1 more source

Structural Basis of Shiga Toxin Neutralization by Human Antibodies Targeting Canonical Receptor‐Binding and Non‐Canonical Assembly Sites

Advanced Science, EarlyView.
Cryo‐electron microscopy structures reveal two distinct neutralization mechanisms of fully human monoclonal antibodies targeting the Shiga toxin 1a B subunit. RDS059 occludes the Gb3 receptor‐binding site, whereas RDS045 engages a lateral quaternary epitope to disrupt holotoxin assembly.
Jianting Ke, Xin Li, Xiaoli Wang, Zhaoxia Huang, Shaojie Xue, Yuyang Liu, Jing Pan, Guowei Hu, Yayu Wang, Cheng Wang, Shoudeng Chen   +10 more
wiley   +1 more source

Structural basis for the recognition of superantigen streptococcal pyrogenic exotoxin A (SpeA1) by MHC class II molecules and T‐cell receptors [PDF]

The EMBO Journal, 1999
Streptococcal pyrogenic exotoxin A (SpeA) is a superantigen produced by Streptococcus pyogenes and is associated with severe infections characterized by rash, hypotension, multiorgan failure and a high mortality rate. In this study, an allelic form of this toxin, SpeA1, was crystallized with four molecules in the crystallographic asymmetric unit and ...
A C, Papageorgiou, C M, Collins, D M, Gutman, J B, Kline, S M, O'Brien, H S, Tranter, K R, Acharya   +6 more
openaire   +2 more sources

Phase I Evaluation of Siltartoxatug, a First‐in‐Class Anti‐Tetanus Monoclonal Antibody: Safety, Pharmacokinetics and Pharmacodynamics in Healthy Australian and Chinese Populations

Clinical Pharmacology &Therapeutics, EarlyView.
Siltartoxatug, a first‐in‐class monoclonal antibody targeting tetanus toxin for post‐exposure prophylaxis, was evaluated in two phase I trials in Australian and Chinese healthy adults. In these randomized, double‐blind, placebo‐controlled, dose‐escalation studies, participants received a single intramuscular injection of siltartoxatug (10–250 μg/kg) or
Xinyu Liu, Zhigang Liu, Xiaohu Kuang, Yueming Wang, Xiaoyi Liu, Jiyuan Ding, Xia Zhou, Xin Zhou, Qianyu Liang, Meizhuo Zhang, Hao Zhao, Qingqing Tan, Weihong Zheng, Huaxin Liao, Charlotte Lemech, Wanmei Wang   +15 more
wiley   +1 more source

Targeting Group A Streptococcus with a Recombinant Chimeric Vaccine: Integrating ScpA and SpeA Fragments

Медицинская иммунология
Our objective was to develop a vaccine against group A streptococci (Streptococcus pyogenes, GAS), the causative agent of a broad spectrum of infections with varying severity.
N. V. Duplik, G. F. Leontieva, T. A. Kramskaya, K. P. Bogatireva, T. V. Gupalova, E. A. Bormotova, I. V. Koroleva, A. N. Suvorov   +7 more
doaj   +1 more source

A Galactose-Binding Lectin Isolated from Aplysia kurodai (Sea Hare) Eggs Inhibits Streptolysin-Induced Hemolysis

Molecules, 2014
A specific galactose-binding lectin was shown to inhibit the hemolytic effect of streptolysin O (SLO), an exotoxin produced by Streptococcus pyogenes.
Imtiaj Hasan, Miharu Watanabe, Naoto Ishizaki, Yoshiko Sugita-Konishi, Yasushi Kawakami, Jun Suzuki, Chikaku Dogasaki, Sultana Rajia, Sarkar M. A. Kawsar, Yasuhiro Koide, Robert A. Kanaly, Shigeki Sugawara, Masahiro Hosono, Yukiko Ogawa, Yuki Fujii, Hideyuki Iriko, Jiharu Hamako, Taei Matsui, Yasuhiro Ozeki   +18 more
doaj   +1 more source

Antibody kinetics against tetanus toxoid before and after primary vaccination of foals

Equine Veterinary Journal, EarlyView.
Abstract Background Vaccination recommendations for foals against Clostridium tetani vary. Available studies assessing foal immune responses, maternal antibody interference, or individual variation often used small foal numbers. Objectives To quantify antibody responses after tetanus vaccination in foals and explore associations with passively ...
Katharina Olbrich, Monica Venner, Bettina Wagner   +2 more
wiley   +1 more source

The Immunomodulatory Effect of Recombinant Exotoxin A of Pseudomonas Aeruginosa on Dendritic Cells Extracted from Mice Spleen

Journal of Fasa University of Medical Sciences, 2015
Background & Objective: Dendritic cell (DC) is as a key cell in activation of immune response against microbes and disease. Therefore, the effect of recombinant exotoxin A of Pseudomonas aeruginosa on the maturity and the activation of DCs was evaluated ...
Mohammad Hossein Karimi, Aziz Japoni, Manouchehr Rasouli, Salimeh Ebrahimnezhad   +3 more
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