Obesity Clinical Trial
Official title:
Individualization of Dosage Regimens in Obese Patients: Application to Acyclovir
The number of obese people will reach 50% of the world population by 2035. Obesity is a chronic disease. For obese patients, dosage regimens have been determined for patients with a "normal" BMI between 20-30 kg/m2. Based on plasma and urine concentrations, a pharmacokinetic model will be performed to study in healthy volunteers, the predictive character of lean mass, measured by DEXA, on renal elimination and therefore on acyclovir exposure. The main objective of this study is to evaluate, in 4 volunteers groups representative of (1) non-obese (18-24.9 kg/m2), (2) overweight (25-29.9 kg/m2), (3) grade 1 obesity (30-34.9 kg/m2) and (4) grade 2 obesity (35-39.9 kg/m2), the predictive nature of lean mass, measured by DEXA, on renal elimination and therefore on acyclovir exposure.
This study will complement the clinical data on acyclovir in healthy volunteers considering that current knowledge in terms of drugs use in obese subjects is not sufficient to guarantee the efficacy and/or toxicity absence of exposure. As a consequence, this lack of certainties leads physicians to propose dosages without exceeding a threshold defined according to (i) their experience, (ii) data obtained for BMI < 30 kg/m2 and/or (iii) an approximate criterion derived from the total weight (adjusted weight...). Acyclovir is a systemic antiviral drug indicated for the treatment of Herpes Simplex virus (HSV) and Varicella Zoster (VZV) mucosal infections at 15 mg/kg/d in three divided doses, or more severe infections (e.g., herpetic meningoencephalitis) at higher dosage regimen (30 to 45 mg/kg/d in three divided doses). ;
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