German Paediatric Research Network (PAED-Net).

Clinical trials in children are mandatory to generate data on new drugs as well as on drugs used off-label or for unlicensed indications. The EU Paediatric Regulation introduced in 2007 provides the background, goals, and requirements for pediatric clinical trials. The German Paediatric Network (PAED-Net) was established in 2002 with a public grant from the German Ministry of Education and Research with the aim of developing competence, infrastructure, networking, and education for pediatric clinical trials.

Pharmacodynamic studies on the angiotensin II type 1 antagonists irbesartan and candesartan based on angiotensin II dose response in humans.

The in vivo effects of two unsurmountable angiotensin II type 1 (AT1) antagonists, irbesartan (150 mg) and candesartan (8 mg), were studied in a double-blind, randomized, crossover study in 18 healthy men. The drugs' direct vascular effects were assessed as the rightward shift (dose ratio - 1) of angiotensin dose-effect curves on diastolic blood pressure (DBP). Renal and adrenal effects were assessed by plasma renin activity (PRA), aldosterone concentrations, and antagonistic concentration equivalents (n x Ki) in a radioligand rat lung receptor assay.