âº They act as a framework along which motor proteins can move structures in the cell. Microtubules are assembled from molecules of the protein tubulin. Tubulin is a dimerâa molecule made up of two monomers. The polypeptide monomers that make up this protein are known as a-tubulin and b-tubulin.
Prior to initiation of cefuroxime therapy, careful inquiry should be made concerning previous hypersensitivity reactions to cephalosporins, penicillins, or other drugs. Cefuroxime axetil /is/ contraindicated in patients who are hypersensitive to cefuroxime or other cephalosporins and should be used with caution in patients with a history of hypersensitivity to penicillins.
Cefuroxime is commercially available for parenteral administration as a sodium salt and for oral administration as cefuroxime axetil, the 1-(acetoxy)ethyl ester of the drug. Cefuroxime axetil is a prodrug of cefuroxime and has little, if any, antibacterial activity until hydrolyzed in vivo to cefuroxime.