8467 results for 'IL-17'

Blocking TNF cures rheumatoid arthritis in some patients and triggers demyelination in others. That is not a dosing problem, and it is not a patient-selection problem. It is the direct consequence of

The germinal centre is where antibody quality is made. A naive B cell that binds antigen does not become a source of protective, high-affinity IgG by accident. It passes through a tightly choreograph

Block one receptor and more than 90% of the microglia in a mouse brain are dead within a week. Not impaired — gone. Stop the block and they come back, repopulating from the survivors within another w

Toll-like receptors are the reason a milligram of endotoxin can kill a mouse. They are the fastest, least discriminating layer of immunity: germline-encoded sensors that read conserved microbial chem

By Eoin Mac Réamoinn Toll-like receptors (TLRs) are renowned for their fundamental roles in innate sensing and initiating inflammatory responses. TLRs acco

A T cell does not choose which tissue to defend. The tissue chose it, during priming. A naive T cell has no tropism at all; it acquires one from the dendritic cell that activates it, and the instruct

PI3K does not switch on a protein — it rewrites a membrane. Everything downstream follows from one chemical event: the 3-hydroxyl of a phosphoinositide is phosphorylated, PIP₂ becomes PIP₃, and every

Leukemia Inhibitory Factor and JAK-STAT Signalling Pathway Leukemia inhibitory factor (LIF) is a cytokine that belongs to the interleukin-6 (IL-6) family of cytokines. Other members of

The neutrophil is the most heavily armed short-lived cell in the body. It leaves the marrow with its weapons already made — granules preloaded with elastase, myeloperoxidase and defensins — and spend

In the periphery, co-stimulation rescues a T cell. In the thymus, the same molecules kill it. A peripheral T cell that engages its receptor without CD80 and CD86 becomes anergic; engage them and it r

An agonist antibody does not activate its receptor. It gets held still by something else, and the receptors underneath cluster because they are crowded. That sentence sounds like a technicality and i

Biomarkers · InflammationC-Reactive Protein (CRP): Structure, Function and Clinical UseCRP is the most widely measured marker of inflammation in medicine — fast to rise, fast to fall, and entirely non

Immunology · Antigen PresentationDendritic Cells: Markers, Activation and SubtypesDendritic cells are the professional antigen-presenting cells that decide whether an immune response happens at all. T

Endocrinology · ImmunologyCortisol and the Immune ResponseCortisol is the body’s primary stress hormone — a glucocorticoid released by the adrenal gland that powerfully shapes the immune system. Actin