Polarization of circulating Follicular Helper T cells correlates with the severity of Bullous Pemphigoid.

Background: T-follicular-helper (Tfh) cells form a distinct population of T-helper cells with different polarizations (type 1, type 2 and type 17) that regulates humoral responses and may participate in the pathophysiology of B-cell mediated autoimmune diseases, such as bullous pemphigoid (BP), a dermatosis mediated by auto-antibodies specific for hemidesmosomal proteins.

Objectives: The aim was to evaluate the impact of superpotent topical corticosteroid (TCS) treatment, which is more effective and safer than high doses of oral corticosteroids and recommended first-line treatment of BP, on circulating Tfh cells.

Methods: We compared by flow cytometry the frequency, polarization and activation of blood Tfh cells from patients with BP at baseline and longitudinally after initiation of TCS treatment to age- and sex-matched healthy subjects.

Elastin-derived peptides favor type 2 innate lymphoid cells in chronic obstructive pulmonary disease.

Chronic obstructive pulmonary disease (COPD) is a condition characterized by chronic airway inflammation and obstruction, primarily caused by tobacco smoking. Although the involvement of immune cells in COPD pathogenesis is well established, the contribution of innate lymphoid cells (ILCs) remains poorly understood. ILCs are a type of innate immune cells that participate in tissue remodeling processes, but their specific role in COPD has not been fully elucidated.

Mild dyslipidemia accelerates tumorigenesis through expansion of Ly6C monocytes and differentiation to pro-angiogenic myeloid cells.

Cancer and cardiovascular disease (CVD) share common risk factors such as dyslipidemia, obesity and inflammation. However, the role of pro-atherogenic environment and its associated low-grade inflammation in tumor progression remains underexplored. Here we show that feeding C57BL/6J mice with a non-obesogenic high fat high cholesterol diet (HFHCD) for two weeks to induce mild dyslipidemia, increases the pool of circulating Ly6C monocytes available for initial melanoma development, in an IL-1β-dependent manner.

Role of CCR3 in respiratory syncytial virus infection of airway epithelial cells.

Respiratory syncytial virus () infection is the principal cause of severe lower respiratory tract disease and accounts for a significant risk for developing asthma later in life. Clinical studies have shown an increase in airway responsiveness and a concomitant Th response in the lungs of RSV-infected patients. These indications suggest that RSV may modulate aspects of the immune response to promote virus replication.