Treatment with interferon beta (IFN-beta) — a disease-modifying therapy that lowers inflammation in multiple sclerosis (MS) — was found to restore the ability of blood vessels in the brain to dilate following a stimulus. A new study suggests that this ability, called cerebrovascular reactivity or CVR, is reduced…

Plegridy (peginterferon beta-1a) and Avonex (interferon beta-1a), both by Biogen, may be used — if necessary — by women with relapsing multiple sclerosis who are pregnant or breastfeeding, the U.S. Food and Drug Administration (FDA) announced in updating prescribing information for these MS treatments. Due to the limited…

New or worsening headaches are a more common side effect of interferon-beta (IFN-beta) treatment in people with multiple sclerosis (MS) than previously appreciated, a new study suggests. The study, “Interferon-Beta-Induced Headache in Patients with Multiple Sclerosis: Frequency and Characterization,” was published in the Journal of Pain Research.

Treatment with interferon-beta therapy during pregnancy in women with multiple sclerosis (MS) does not influence children’s gestational age, birth weight, length, or head size, researchers report. The study with those findings, “The association between exposure to interferon-beta during pregnancy and birth measurements in offspring of women with…

Long-term treatment with interferon beta (IFN-beta) corrects the defective immune balance characteristic of people with relapsing-remitting multiple sclerosis (RRMS), a study has found. The study also identified more than 200 genes with significantly different activity between complete and partial responders to IFN-beta treatment, which could be used to identify which…

A combination therapy of low-dose methylprednisolone and interferon (IFN)-beta-secreting stem cells is effective in a mouse model of multiple sclerosis (MS), a new Korean study suggests. The research, “Effective combination of methylprednisolone and interferon β-secreting mesenchymal stem cells in a model of multiple sclerosis,” appeared in the…

According to a new clinical trial, the allergy treatment cetirizine fails to alleviate a flu-like condition that interferon-beta treatment generates in people with relapsing-remitting multiple sclerosis. The results, which surprised researchers, apply to flu-like syndrome, or FLS. Cetirizine is an over-the-counter medicine sold under the brand names Zirtec, Zyrtec, Reactine, and Triz. FLS affects roughly 75 percent of patients who take interferon-beta, also known as IFN-beta. It can cause fever, chills, muscle pain, weakness, and headache. The symptoms commonly occur three to six hours after an IFN-beta injection and last up to 24 hours. Although FLS usually subsides in the first three months of IFN-beta therapy, it persists in some patients, causing them to miss doses or even discontinue the treatment. Cetirizine is an antihistamine for hay fever and allergies. The purpose of the clinical trial was to determine whether cetirizine could alleviate RRMS patients' FLS. In order to determine study results, patients did self-assessments of how much discomfort their FLS caused them. There were no significant changes in the two groups' average self-assessment scores at four and eights weeks of treatment, suggesting that cetirizine does not offer significant benefits to RRMS patients with FLS. “The addition of a [cetirizine] to the standard of care for IFNβ-induced FLS in patients with RRMS does not seem to improve symptoms significantly compared with placebo," the team wrote. "FLS continues to be inadequately treated in many RRMS patients. Further investigations are needed to elucidate the underlying mechanisms of IFNβ-induced FLS and develop adequate strategies for prevention and treatment."