Re: [NMusers] Prednisone and Prednisolone PPK

2008-12-04 Thread Chandrasekhar Udata
Dear all, I am working on modelling prednisone and prednisolone PPK in humans given a PO dose of prednisone. Note that prednisone is converted to prednisolone during the first-pass and prednisolone is converted back to prednisone (reversible metabolism). I used a simple 2-cmt PK model (see

[NMusers] Sparse (pediatric) and rich (adult) data

2008-05-28 Thread Chandrasekhar Udata
Hi, I am working on a pop PK model to estimate PK parameters in pediatric and adult patients. Pediatric study (n=20, age 6 yrs) has fewer samples (3) per subject whereas the adult study (n=50, median age 20 yrs) has 12 samples per subject. A two-compartment model best describes the data for

Re: [NMusers] Sparse (pediatric) and rich (adult) data

2008-05-28 Thread Chandrasekhar Udata
and Maturity in Pharmacokinetics. Annu Rev Pharmacol Toxicol. 2008;48:303-32. Chandrasekhar Udata wrote: Hi, I am working on a pop PK model to estimate PK parameters in pediatric and adult patients. Pediatric study (n=20, age 6 yrs) has fewer samples (3) per subject whereas the adult study (n=50