Comparison of Monoclonal Gammopathies Linked to Poliovirus or Coxsackievirus vs. Other Infectious Pathogens.

Chronic stimulation by infectious pathogens or self-antigen glucosylsphingosine (GlcSph) can lead to monoclonal gammopathy of undetermined significance (MGUS) and multiple myeloma (MM). Novel assays such as the multiplex infectious antigen microarray (MIAA) and GlcSph assays, permit identification of targets for >60% purified monoclonal immunoglobulins (Igs). Searching for additional targets, we selected 28 purified monoclonal Igs whose antigen was not represented on the MIAA and GlcSph assays; their specificity of recognition was then analyzed using microarrays consisting of 3760 B-cell epitopes from 196 pathogens.

The skin microbiome of Xenopus laevis and the effects of husbandry conditions.

Background: Historically the main source of laboratory Xenopus laevis was the environment. The increase in genetically altered animals and evolving governmental constraints around using wild-caught animals for research has led to the establishment of resource centres that supply animals and reagents worldwide, such as the European Xenopus Resource Centre. In the last decade, centres were encouraged to keep animals in a "low microbial load" or "clean" state, where embryos are surface sterilized before entering the housing system; instead of the conventional, "standard" conditions where frogs and embryos are kept without prior surface treatment.

Analysis of the Targets and Glycosylation of Monoclonal IgAs From MGUS and Myeloma Patients.

Previous studies showed that monoclonal immunoglobulins G (IgGs) of "monoclonal gammopathy of undetermined significance" (MGUS) and myeloma were hyposialylated, thus presumably pro-inflammatory, and for about half of patients, the target of the monoclonal IgG was either a virus-Epstein-Barr virus (EBV), other herpes viruses, hepatitis C virus (HCV)-or a glucolipid, lysoglucosylceramide (LGL1), suggesting antigen-driven disease in these patients. In the present study, we show that monoclonal IgAs share these characteristics. We collected 35 sera of patients with a monoclonal IgA (6 MGUS, 29 myeloma), and we were able to purify 25 of the 35 monoclonal IgAs (6 MGUS, 19 myeloma).

Sex differences in coronary artery lesions and in-hospital outcomes for patients with ST-segment elevation myocardial infarction under the age of 45.

Objective: We aimed to compare baseline characteristics, coronary angiogram findings, and in-hospital outcomes between female and male patients with ST-segment elevation myocardial infarction (STEMI) under the age of 45 years.

Background: Although sex differences in risk factor profile have been documented for young patients with STEMI, limited data exist on the prevalence of spontaneous coronary artery dissection in these patients.

Methods: As part of an ongoing hospital-based registry of suspected STEMI, we analyzed the original data for 51 women under the age of 45 years matched with 93 men of similar age who underwent coronary angiography at two percutaneous coronary intervention centers, between January 2003 and December 2012.

Age-Related Differences in Reperfusion Therapy and Outcomes for ST-Segment Elevation Myocardial Infarction.

Objectives: To compare timely access to reperfusion therapy and outcomes according to age of older adults with ST-segment elevation myocardial infarction (STEM) managed within an integrated regional system of care.

Design: Ongoing, prospective, regional, hospital-based clinical registry.

Setting: Twenty-three public and private hospitals in the Northern Alps in France.