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  • Title: Safety and tolerability of once-daily mometasone furoate aqueous nasal spray in children.
    Author: Brannan MD, Herron JM, Affrime MB.
    Journal: Clin Ther; 1997; 19(6):1330-9. PubMed ID: 9444443.
    Abstract:
    Sensitive and reproducible assessments of hypothalamic-pituitary-adrenal (HPA) axis function were used to assess the systemic exposure and tolerability of mometasone furoate aqueous nasal spray (MFNS) in 96 children aged 3 to 12 years with allergic rhinitis. In the first phase of the study, older children (aged 6 to 12 years) received MFNS at 50, 100, or 200 micrograms or placebo once daily for 7 days, and plasma cortisol concentrations were measured by radioimmunoassay before and after treatment. Plasma cortisol concentrations were not statistically significantly different from baseline values on day 7 or day 8 (1 day after treatment was stopped). Also, the mean plasma cortisol and 24-hour urinary free-cortisol concentrations of the MFNS-treated and placebo groups were not statistically significantly different. Additionally, mometasone furoate was undetectable in almost all plasma samples collected at 0.5, 1, and 2 hours after dosing on days 1 and 7. Because these findings indicated that MFNS could be safely administered to patients aged 6 to 12 years, a more rigorous assessment was conducted in younger patients (aged 3 to 5 years). The younger patients also received MFNS at 50, 100, or 200 micrograms or placebo once daily, but for a longer duration (14 days). HPA axis function was determined by the response to cosyntropin stimulation on the final day of treatment. The younger patients demonstrated a normal cortisol response to cosyntropin stimulation on day 14; that is, all the patients had an increase in plasma cortisol concentration of at least 7 micrograms/dL to at least 18 micrograms/dL. Mean plasma cortisol concentrations for the MFNS-treated groups were not statistically significantly different from the mean concentration for the placebo group, either before or after cosyntropin stimulation. MFNS was also found to be well tolerated by both the younger and older children, with headache the most frequently reported adverse event in both the placebo- and MFNS-treated groups. No clinically relevant changes in the results of physical examinations, clinical laboratory determinations, or electrocardiography were noted. These results indicate that the intranasal administration of up to 200 micrograms of MFNS once daily for up to 14 days in children aged 3 to 12 years who have allergic rhinitis is well tolerated and does not result in clinically relevant systemic exposure.
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