Hydroxychloroquine does not decrease serum methotrexate concentrations in children with juvenile idiopathic arthritis.
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Arthritis, Juvenile↗
Biomedical subjects
Jarkko Haapasaari
Publications and source records attributed to Jarkko Haapasaari.
Growth hormone is effective in the treatment of severe growth retardation in children with juvenile chronic arthritis. Double blind placebo-controlled followup study.
OBJECTIVE: To assess the efficacy of growth hormone (GH) treatment in severe growth retardation in prepubertal children with juvenile chronic arthritis (JCA). METHODS: In a randomized, double-blind placebo-controlled study, we treated 25 prepubertal children (7 boys, 18 girls, mean age 9.0 yrs) with severe growth retardation due to JCA with human recombinant GH (6 months) and placebo (6 months). RESULTS: A significant response to GH treatment, compared with placebo, was seen in most children. The median height velocity standard deviation score was +2.09 (range -7.18 to +9.49) during the 6 month period of GH therapy and -1.11 (range -10.00 to +1.11) during placebo treatment (p = 0.0002). The median height standard deviation score increased from -2.08 to -1.79 during GH treatment and from -2.18 to -2.02 during placebo (p = 0.0268). All children except one completed the study, showing high compliance. The treatment was well tolerated, and no significant alterations in the disease activity were recorded during the study. CONCLUSION: We conclude that human recombinant GH may be of benefit in the treatment of severe growth retardation in children with JCA. The response was seen after only 6 months and was independent of initial growth hormone status of the child.
Adolescent↗
Etanercept does not essentially increase the total costs of the treatment of refractory juvenile idiopathic arthritis.
OBJECTIVE: To assess the costs of adding etanercept to the prevailing drug therapy for a one-year period in a group of 31 children with juvenile idiopathic arthritis (JIA) whose disease was refractory to conventional disease modifying antirheumatic drugs. METHODS: The changes in total costs were retrospectively collected from medical records and by interviewing parents 6 months before the initiation of etanercept treatment and during a 12-month followup divided into 3-month periods. RESULTS: Direct median costs increased during the first 3 months after the introduction of etanercept, but decreased later during the followup. The estimated median direct costs per patient increased by 4200 US dollars per year, and the indirect costs were reduced by 50%, i.e., 1700 US dollars . The estimated median total cost per patient was increased by about 2700 US dollars per year (10%). CONCLUSION: After combining etanercept with the prevailing treatment, the total costs of refractory JIA calculated per year were only slightly higher than those of traditional therapy. This finding must be evaluated in light of the reduced inflammatory activity of the joint disease and the probable reduction of lifetime pain and disability produced by the disease.
Adolescent↗
Hepatotoxicity in patients with juvenile idiopathic arthritis receiving longterm methotrexate therapy.
OBJECTIVE: To evaluate hepatotoxicity in patients with juvenile idiopathic arthritis (JIA) receiving methotrexate (MTX) therapy with doses of 20-30 mg/m2 of body surface area. METHODS: We graded the histology of percutaneous liver biopsies from 34 patients with JIA receiving longterm (> 2.4 years) MTX therapy at the Rheumatism Foundation Hospital, Heinola, Finland, using the Roenigk classification scale. Medical records of the patients with JIA were retrospectively analyzed. RESULTS: Of 10 patients with MTX doses >/= 20 mg/m2, 4 had grade II, 5 had grade I histology, and one specimen with extensive steatosis as the only pathologic finding could not be classified. All 24 patients treated with low dose MTX had grade I histology. No specimen showed fibrosis or cirrhosis. In 2 patients with grade II histology, extensive portal tract inflammation resolved when MTX was discontinued for 6 months. CONCLUSION: Aggressive medical treatment of JIA with MTX at 20-30 mg/m2 with concomitant disease modifying antirheumatic drugs and corticosteroids may contribute to minor liver abnormalities that seem to be reversible.
Adolescent↗