title: [Treatment with low dose methotrexate in rheumatoid arthritis: risk factors for severe complications].
abstract: Treatment with low dose methotrexate in rheumatoid arthritis is associated with serious side effects in about 5 per cent of cases (respiratory, haematological or infectious). The goal of a null risk seems unrealistic because of the idiosyncrasy of some of the risks and our poor understanding of others (enzymatic polymorphisms might be operational, and infectious agents could act as co-factors). However, risk can be greatly reduced by a careful selection of patients. Some contraindications are strict: poor compliance and the possibility of mistake in the timing of the administration; pregnancy or desire for pregnancy; treatment with trimetoprim; haemodialysis; renal insufficiency (clearance < or = 50 ml/min) (and therefore old age), alcoholism. Others remain relative although well established; hypoalbuminaemia, diabetes mellitus, obesity, past infection with hepatitis virus. Others are dubious: starvation, macrocytosis, surgical stress, NSAIDs. An extensive large study of side effects is warranted.
authors.affiliation: Service de Rhumatologie, CHU Nantes, France.
authors.forename: J M
authors.initials: JM
authors.lastname: Berthelot
authors.forename: J
authors.initials: J
authors.lastname: Glemarec
authors.forename: A
authors.initials: A
authors.lastname: Chiffoleau
authors.forename: Y
authors.initials: Y
authors.lastname: Maugars
authors.forename: A
authors.initials: A
authors.lastname: Prost
mesh_terms: D018501:Antirheumatic Agents / Q000009:adverse effects* / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D000075202:Contraindications; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D012307:Risk Factors
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate
vernacular_title: Traitements à faibles doses par le méthotrexate dans la polyarthrite rhumatoïde: facteurs de risque des complications graves.