Andrea Lobo, PhD, science writer —

Patients with primary Sjögren’s syndrome who have extra-glandular symptoms have higher levels of the chemokine CXCL9 than those only affected in the saliva and tear-producing glands, a study finds. CXCL9 is a small signaling molecule involved in the migration and maturation of lymphocytes, a type of immune cell thought…

People with primary Sjögren’s syndrome who’d never received treatment for it show disturbances in their gut microbiota similar to what’s seen in systemic lupus erythematosus (SLE), another chronic autoimmune disorder, a study in China reports. Gut microbiota are microorganisms in the gastrointestinal tract — bacteria, fungi, and viruses —…