A new type of interaction in which fruit juices diminish oral drug bioavailability through inhibition of uptake transport is the focus of this review. The discovery was based on an opposite to anticipated finding when assessing the possibility of grapefruit juice increasing oral fexofenadine bioavailability in humans through inhibition of intestinal MDR1-mediated efflux transport. In follow-up ...

A sensitive and selective high performance liquid chromatography (HPLC) method has been developed for the simultaneous determination of celiprolol enantiomers in human plasma, urine, and pharmaceutical formulation. Enantiomeric resolution was achieved on cellulose tris(3,5dichlorophenyl carbamate) immobilized onto spherical porous silica chiral stationary phase known as Chiralpak IC with a fluo...

The occurrence of eight pharmaceuticals (beta-blockers: acebutolol, atenolol, metoprolol and sotalol; antiepileptic: carbamazepine; fluoroquinolone antibiotics: ciprofloxacin, norfloxacin, ofloxacin) were assessed in the raw and treated sewage of 12 sewage treatment plants (STPs) in Finland. The average concentrations in the raw and treated sewage ranged from 100 to 1060 ng L(-1) and from <24 t...

OBJECTIVES To report the efficacy of propranolol as first-line treatment of head and neck hemangiomas in children and to present an optimized protocol for treating hemangiomas. DESIGN Multi-institutional retrospective study. SETTING Two tertiary care referral pediatric centers. PATIENTS Thirty-nine children with head and neck infantile hemangiomas were treated. MAIN OUTCOME MEASURES Rev...

Binding characteristics of the beta-blockers and beta-agonists with the beta-adrenoceptors were investigated in 3H-dihydroalprenolol (3H-DHA) binding to rat heart membranes treated with neuraminidase. When 60% of the total sialic acid content in the membranes was removed, reproducibility of the binding assay became much better than was attainable without neuraminidase treatment, and the maximum...

CONTEXT There has been widespread interest surrounding the use of beta-blockers (i.e. propranolol, timolol, nadolol, acebutolol) in the treatment of infantile hemangiomas (IH). OBJECTIVE To review literature evaluating treatment of IH with propranolol. EVIDENCE ACQUISITION We conducted a literature search on PubMed and investigated for case reports, case series, and controlled trials by usi...

Antialprenolol rabbit antibodies were fractionated on an acebutolol affinity resin, followed by L-propranolol elution so as to separate a class of binding sites that mimic the beta-adrenergic receptor. Allotype-identicaL rabbits were immunized with this fraction. After 6 mo, antisera exhibited antiidiotypic activity inhibiting [3H]alprenolol binding to the original antibody and to rabbit antiac...

A comparative study of peak shape, elution behavior, and resolution of 16 beta-blockers (acebutolol, alprenolol, atenolol, bisoprolol, carteolol, celiprolol, esmolol, labetalol, metoprolol, nadolol, oxprenolol, pindolol, practolol, propranolol, sotalol, and timolol) chromatographed with hybrid mobile phases of triethylamine (TEA)-acetonitrile and sodium dodecyl sulfate (SDS)-propanol is perform...

Pyridostigmine bromide (PB) is a reversible cholinesterase inhibitor used routinely in the treatment of myasthenia gravis and recently by the US Army as a prophylactic agent against potential nerve gas attack in the Persian Gulf War. Pyridostigmine has been implicated as one of several possible causative factors associated with Persian Gulf illnesses. To investigate toxic interactions between P...

lar dyssynergy by precordial Q wave mapping in anterior myocardial infarction. Circulation 55: 833, 1977 57. Askenazi J, Parisi AF, Cohn PF, Freedman WB, Braunwald E: Value of the QRS complex in assessing left ventricular ejection. Am J Cardiol 41: 494, 1978 58. Hardarson T, Henning H, O'Rourke RA, Karliner JS, Ryan W, Ross J Jr: Variability, reproducibility, and applications of precordial ST-s...