Methotrexate is an antimetabolite and antifolate agent with antineoplastic and immunosuppressant activities. Methotrexate binds to and inhibits the enzyme dihydrofolate reductase, resulting in inhibition of purine nucleotide and thymidylate synthesis and, subsequently, inhibition of DNA and RNA syntheses. Methotrexate also exhibits potent immunosuppressant activity although the mechanism(s) of actions is unclear.
Methotrexate is approved by the Food and Drug Administration (FDA) to be used by itself to treat the following types of gestational trophoblastic tumors, Chorioadenoma destruens, Choriocarcinoma, Hydatidiform mole. Methotrexate is also approved to be used alone or with other drugs to treat acute lymphoblastic leukemia (ALL) that has spread to the central nervous system (CNS) or to keep it from spreading there, and to treat the following, breast cancer, certain types of head and neck cancer, lung cancer, advanced non-Hodgkin lymphoma (NHL), advanced mycosis fungoides (a type of cutaneous T-cell lymphoma), osteosarcoma that has not spread to other parts of the body, following surgery to remove the primary tumor. Methotrexate is also approved to treat the following non-cancer conditions, rheumatoid arthritis, severe psoriasis.
The autoimmune disorder rheumatoid arthritis has been associated with a lower risk of Parkinson's disease (PD) in previous studies, with antirheumatic drugs as one possible explanatio
A team of researchers assessed the immune response after administering a SARS-COV-2 vaccine in immuno-compromised subjects who are potentially at an increased risk to experience severe COVID-19 and inadequate response to SARS-CoV2 vaccination.
A recent study evaluates the immune responses elicited by COVID-19 vaccines in infliximab- or vedolizumab-treated IBD patients.
Despite clear directives outlined in the updated guidelines published by the American College of Rheumatology/National Psoriasis Foundation (ACR/NPF) in 2018, there is limited data regarding medication use in real-world clinical practice and patient medication preferences for the treatment of psoriatic arthritis (PsA).
New research presented this week at ACR Convergence, the American College of Rheumatology's annual meeting, shows that people with chronic inflammatory diseases, such as rheumatoid arthritis (RA), who take immunosuppressive therapy appear to have an impaired immunity response to SARS-CoV-2, the coronavirus that causes COVID-19, vaccines. Patients currently on glucocorticoids or B-cell depleting therapy appear to have an even more severely impeded vaccine response.
A new study discusses risk factors for the failure of seroconversion following full vaccination with the COVID-19 Pfizer vaccine.
Researchers investigate the effects of five established immunosuppressant medications following COVID-19 vaccination.
COVID-19 vaccination elicited antibody responses in nearly nine out of 10 people with weakened immune systems, although their responses were only about one-third as strong as those mounted by healthy people, according to a study by researchers at Washington University School of Medicine in St. Louis.
The National Institutes of Health has begun a clinical trial to assess the antibody response to an extra dose of an authorized or approved COVID-19 vaccine in people with autoimmune disease who did not respond to an original COVID-19 vaccine regimen.
A range of evidence-based resources are now available from the Targeted Therapies Alliance to assist dermatologists and their patients in shared decision making in the treatment of plaque psoriasis.
A study measured neutralization of SARS-CoV-2 and vaccine responses in immunocompromised patients with systemic inflammatory diseases.
A recent study discusses the clinical characteristics and outcomes of patients with SARDs who were previously vaccinated against SARS-CoV-2.
Preemptive treatment for a nonviable pregnancy of unknown location—a situation in which there is a positive pregnancy test result but the location of the pregnancy cannot be confirmed within or outside the uterus with other diagnostic tests—resolves the condition more rapidly than treating symptoms as they arise, suggests a study supported by the National Institutes of Health.
Uveitis is an inflammation of the eye and is a common extra-articular manifestation associated with juvenile idiopathic arthritis (JIA). It can cause vision-threatening complications, and if left uncontrolled may even lead to blindness.
Up to a third of patients taking methotrexate – a common treatment for immune mediated inflammatory conditions such as rheumatoid arthritis and psoriasis/psoriatic arthritis – failed to achieve an adequate immune response to mRNA COVID-19 vaccines in a small study accepted for publication in the journal Annals of the Rheumatic Diseases.
One-quarter of people who take the drug methotrexate for common immune system disorders -- from rheumatoid arthritis to multiple sclerosis -- mount a weaker immune response to a COVID-19 vaccine, a new study shows.
In the Philippines, in the early months of the COVID-19 pandemic, there occurred a supply shortage of hydroxychloroquine and methotrexate. Limited access to medication and the life changes caused from the COVID-19 pandemic may prompt patients with rheumatoid arthritis (RA) or systemic lupus erythematosus (SLE) to experience disease flares.
Researchers from Germany and the USA recently investigated the cellular and humoral immune responses of patients with IMIDs on immunomodulatory treatment to mRNA COVID-19 vaccines. The research is published on the medRxiv* preprint server.
People who take a commonly-prescribed drug for inflammatory bowel disease (IBD) should not assume they are protected after a first dose of COVID-19 vaccine, after a large-scale study found many had poor antibody responses.
A new study demonstrates that vaccines may be less effective at countering the newer SARS-CoV-2 variants compared to natural infection.