Observations made by the DMSP F10 satellite during the recovery phase from geomagnetic disturbances in June 1991 show regions of He dominance around 830 km altitude at 09:00 MLT. These regions are co-located with a trough in ionisation observed around 55 in the winter hemisphere. Plasma temperature and concentration observations made during the severe geomagnetic storm of 24 March 1991 are used...

Using high-performance liquid chromatography-tandem mass spectrometry, we assessed trough imatinib plasma levels in 68 patients with chronic myeloid leukemia (CML) who responded or not to standard-dose imatinib, after at least 12 months' treatment. Mean trough imatinib plasma levels were significantly higher in the group with complete cytogenetic response (56 patients) than in the group without...

BACKGROUND AND OBJECTIVES Peritonitis is a major infectious complication in peritoneal dialysis patients, and intraperitoneal antibiotic administration is preferred to ensure maximal antibiotic concentrations at the site of infection. This study aimed to describe the plasma and infection site pharmacokinetics of intraperitoneal gentamicin in patients with peritonitis. DESIGN, SETTING, PARTICI...

The pharmacokinetic properties of mezlocillin were evaluated in newborn infants. Mean peak and trough concentrations of drug in plasma, after 75 mg of mezlocillin per kg given intravenously, were 252 and 72 micrograms/ml, respectively, in infants who were less than 38 weeks gestation and less than or equal to 7 days old, compared with 139 and 9 micrograms/ml, respectively, in infants greater th...

Objective: Few studies have correlated the infliximab (IFX) trough concentration, clinical remission (CM) and mucosal healing (MH). The purpose of the study was to determine if higher IFX trough levels are associated with MH and CR, in a group of Brazilian inflammatory bowel disease patients. Methods: Cross-sectional study of 51 IBD patients in IFX maintenance therapy, at a medical center, in B...

Divalproex sodium extended-release dosage form (divalproex-ER) has been promoted as innovative formulation for the treatment of epilepsy and manic disorders, and for migraine headache prevention, with the advantage of being dosing once a day. Due to a significant decreasing in the peak-trough fluctuation of plasma valproic acid levels, in comparison with the twice-daily dosing of conventional d...

As the risk of tenofovir-associated renal toxicity has been found to be proportional to the drug plasma concentration, our aim was to measure the determinants of tenofovir plasma exposure in HIV-positive patients with normal renal function. A cross-sectional analysis was conducted in HIV-positive patients chronically receiving tenofovir-containing highly active antiretroviral therapies (HAARTs)...

Dr. Miura’s study evaluated the use of zonisamide in children with cryptogenic localization-related epilepsy, as monotherapy in a single daily dose. All patients were naive to anticonvulsant therapy. The study examined both clinical effects and pharmacokinetic effects of zonisamide. Patients ranged in age from infancy (3 months) to 15 years of age, with a mean age of 8 years. All were of normal...

We applied model-based meta-analysis of viral suppression as a function of drug exposure and in vitro potency for short-term monotherapy in human immunodeficiency virus type 1 (HIV-1)-infected treatment-naïve patients to set pharmacokinetic targets for development of nonnucleoside reverse transcriptase inhibitors (NNRTIs) and integrase strand transfer inhibitors (InSTIs). We developed class-spe...