Nucleic acids are linear polymers (chains) of nucleotides. Each nucleotide consists of three components: a purine or pyrimidine nucleobase (sometimes termed nitrogenous base or simply base), a pentose sugar, and a phosphate group. The substructure consisting of a nucleobase plus sugar is termed a nucleoside.
Other studies of Remicade and methotrexate indicate that the two medications together can successfully reduce symptoms of psoriasis and psoriatic arthritis, the researchers report. Studies of Humira and Enbrel in conjunction with methotrexate also revealed the combination to be more effective than the biologic alone.
The Facts on Methotrexate for Rheumatoid Arthritis Treatment. Methotrexate is the most commonly prescribed drug to treat rheumatoid arthritis, yet it only helps about half of those who try it. Find out how it works and how to lessen its side effects.