Multiple Sclerosis, Pharmacokinetics Clinical Trial
Official title:
Determination of Teriflunomide Concentration in Serum and Cerebrospinal Fluid From Patients With Multiple Sclerosis Treated With Teriflunomide 14 mg Daily.
Serum and cerebrospinal fluid will be obtained from 20 patients with relapsing-remitting multiple sclerosis treated with teriflunomide tablets 14 mg daily
Teriflunomide concentration in cerebrospinal fluid and serum will be determined in 12 patients with multiple sclerosis. They have been treated for at least 6 months and the sampling from blood and by spinal tap is done before dose at 8 am in 10 patients and at 12 am in 10 patients. The dependence from age, sex, and blood-brain barrier (BBB) integrity will be evaluated.The ratio between serum and cerebrospinal fluid will determine the passage over the BBB. ;