Circulating extracellular vesicles in Systemic Lupus Erythematosus: physicochemical properties and phenotype.

Objective: This study aimed to identify the physicochemical and phenotypic characteristics of circulating Extracellular Vesicles (EVs) in the plasma of patients with SLE, with or without Lupus Nephritis (LN), and their potential utility as disease biomarkers.

Methods: Plasma-circulating EVs were concentrated using differential centrifugation from adult female patients (n=38) who met the 'American College of Rheumatology/European Alliance of Associations for Rheumatology 2019' criteria for SLE diagnosis with (LN) or without LN (nLN), confirmed by renal biopsy. Controls (n=18) were healthy volunteers matched by gender and similar age.

Relevance of non-criteria antiphospholipid antibodies titers among patients with antiphospholipid syndrome and patients with systemic lupus erythematosus.

Background: There is an increasing interest in the study of non-criteria antiphospholipid antibodies (aPL) including antibodies targeting domain 1 of the B2 glycoprotein 1 (anti-D1 B2GP1) and antibodies anti phosphatidylserine/ prothrombin (PS/PT).

Objectives: Our aim was to analyze a panel of conventional and non-criteria aPL in a cohort of patients with systemic lupus erythematosus (SLE) and primary antiphospholipid syndrome (APS), to describe if there are differences in aPL titers among groups, to evaluate clinical associations including risk of recurrent events of novel aPL.

Methods: Observational study that evaluated at baseline antibodies against anti-D1 B2GP1 and anti PS/PT.

Altered recruitment of Lyn, Syk and ZAP-70 into lipid rafts of activated B cells in Systemic Lupus Erythematosus.

There is evidence that B cells from patients with Systemic Lupus Erythematosus (SLE) could be hyperactivated due to changes in their lipid rafts (LR) composition, leading to altered BCR-dependent signals. This study aimed to characterize possible alterations in the recruitment of protein tyrosine kinases (PTK) into B cells LR from SLE patients. Fifteen patients with SLE and ten healthy controls were included.

Pseudotumor cerebri syndrome in a pregnant woman with systemic lupus erythematous.

Systemic lupus erythematous is a chronic multi-systemic autoimmune disease that affects multiple organ systems, including the central nervous system. Pseudotumor cerebri is a disorder associated with increased intracranial pressure in the absence of a space-occupying lesion or other identifiable cause that affects young and obese women.We present the case of a pregnant woman with both pseudotumor cerebri and a new diagnosis of active systemic lupus erythematous.

Utility of urinary transferrin and ceruloplasmin in patients with systemic lupus erythematosus for differentiating patients with lupus nephritis.

Background And Objective: Diagnosis of lupus nephritis (LN) is usually based on renal biopsy, which is an invasive technique that involves multiple risks. Therefore, different biomarkers have emerged as alternatives for the diagnosis of LN. Nonetheless, studies regarding urinary biomarkers in Latin American patients are limited.

Infiltrating CD16 Are Associated with a Reduction in Peripheral CD14CD16 Monocytes and Severe Forms of Lupus Nephritis.

Our aim was to characterize glomerular monocytes (Mo) infiltration and to correlate them with peripheral circulating Mo subsets and severity of lupus nephritis (LN). . We evaluated 48 LN biopsy samples from a referral hospital.

Human splenic macrophages as a model for in vitro infection with Mycobacterium tuberculosis.

Macrophages play an important role during Mycobacterium tuberculosis (MTB) infection. In humans most of the studies on MTB-macrophage interactions have been performed using circulating monocytes and monocyte-derived macrophages. However, little research has been performed on this interaction using tissue macrophages.