Research has identified a subset of T cells, peripheral helper (TPH) cells, which may promote pathological B cell responses and antibody production in patients with seropositive RA. TPH cells also express chemokine receptors, enabling them to infiltrate inflamed parts of the body and stimulate B cells to produce antibodies…
Lara C. Pullen, PhD, is a medical writer with a PhD in microbiology/immunology from Northwestern University’s Feinberg School of Medicine. As a medical writer she has covered topics as diverse as diabetes, cardiovascular disease, and autism. Her favorite subject, however, is the role of the immune system in health and disease. Dr. Pullen is also the mother of three children, the youngest of whom has Prader-Willi Syndrome (PWS). She is an active member of the PWS community and a thought leader on the importance of the ketogenic diet for this patient population.
Articles by Lara C. Pullen, PhD
Celecoxib Is a Safe Treatment for Arthritis
A study compared celecoxib with ibuprofen and naproxen to determine its cardiovascular safety, as well as gastrointestinal and renal outcomes, in patients with rheumatoid arthritis and osteoarthritis. The results showed that celecoxib met all prespecified noninferiority requirements and is as safe as other non-selective NSAIDs…
Denosumab Does Not Increase Risk of Infection in RA Patients
New research dispels the fear that denosumab will increase the risk of infection in vulnerable populations with rheumatoid arthritis when it is prescribed in combination with TNF inhibitors or other biologics. Investigators found the treatment did not increase infection risk beyond what is expected for the patients’ disease, comorbidities and medications…
Statins May Protect Against RA
A recent observational study found a link between high-intensity statin therapy and a 23% reduced risk of rheumatoid arthritis. Although further research is needed, researchers note this study “provides robust evidence of a protective effect of high-intensity statins on the risk of RA.”
Baricitinib Is Effective in Patients Treated with DMARDs & Methotrexate
A recent analysis has examined the effectiveness of baricitinib in treating RA patients who suffer from comorbidities and the effect of concomitant use of steroids. Baricitinib proved effective, particularly in patients who had exposure to cDMARDs and corticosteroids…
Distinct Autoantigens Found in Patients with Scleroderma & Coincident Cancer
Recent research examined the relationship between patients with scleroderma who are anti-CTP antibody negative and cancer. Combing two complementary technologies, PhIP-Seq and PLATO-BC, researchers identified the POLR3 complex in cancer-associated scleroderma…
Research Identifies Two New Cell Types in Sjögren’s Syndrome
Two previously unidentified cellular players in the pathogenesis of primary Sjogren’s syndrome (pSS) have been discovered: a regulatory T cell (Prdm1+eTreg) and a helper T cell (Il21+Th1). In the study, researchers also identified the transcriptional signatures of these cells and their differential dependency on the lymphotoxin/LIGHT signaling axis, which may guide future therapeutic interventions…
Liquid Biopsy Provides Insights into Lupus
Microparticles in the blood of SLE patients may be a source of extracellular HMGB1, which is involved in immune response. Researchers found that analysis may be able to determine if the patient is producing dead, dying and activated cells that are important for SLE pathogenesis…
Low Levels of Vitamin D3 May Increase OA Pain
In a study of patients with knee osteoarthritis (OA), researchers found that the cytokine IL-17A may play a role in the pain associated with the disease. Specifically, decreased serum levels of vitamin D3 may contribute to OA pain via the regulation of immune responses…
New Insights into Cartilage & Tendon Differentiation
By examining the phenotypic plasticity of cartilage and tendon cells, researchers found that oxidative stress and P13K signaling pathways are key modulators of the phenotype of musculoskeletal cells. Using monolayer and three-dimensional cultures, the experiments confirmed that dedifferentiation occurs via reductions in expression of genes for cartilage (Col2a1, Agcn) and tendon (Tnmd, Serpinf1)…
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