Ruth Lancaster

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Debrisoquine and its primary metabolite, 4-hydroxydebrisoquine, were measured in the urine of 94 volunteers after a single oral dose of 10 mg debrisoquine. The ratio between excreted debrisoquine and its metabolite was bimorphically distributed in the study population. Family studies supported the view that alicyclic 4-hydroxylation of debrisoquine is(More)
The formation of an interleukin-6/IL-6 receptor (IL-6/IL-6R) complex increases the biological activity and half-life of IL-6, with its response to exercise currently unknown. The aim of the present study was to determine the response of circulating levels of the IL-6/IL-6R complex to exercise. Nine healthy male participants performed 1h of cycling exercise(More)
Eight volunteers previously phenotyped for their ability to hydroxylate debrisoquine (four extensive metabolisers (EM), four poor metabolisers (PM) were investigated for their metabolic handling of guanoxan and phenacetin. All three drugs are oxidised at carbon centres. Oxidative dealkylation of phenacetin was determined by measuring the rate of formation(More)
1 The synthesis of [14C]-debrisoquine hydrochloride and 4-hydroxy-debrisoquine sulphate is described. 2 The metabolic fate and excretion profile in both urine and faeces of 14C-labelled debrisoquine was studied in five healthy human subjects. 3 Investigations showed that the drug is well-absorbed after a single oral dose of 32 mg and quantitatively(More)
Addition, together with antigen, of compound I.C.I. 74917 (0.1 pg/ml) to chopped sensitized lung, preincubated with DL-isoprenaline for 3 min, resulted in extra inhibition of histamine release as seen in Fig. 2(a). Comparison of the total inhibition with individual values for compound I.C.I. 74917 and isoprenaline show that there is addition rather than(More)
Sixteen hypertensive patients received pindolol (10-45 mg/day); mean +/- SD, 28.75 +/- 15.22) for 3-8 weeks in a placebo-controlled, single-blind, crossover study. Supine and standing blood pressures (BP) were lowered, whereas effective renal plasma flow and glomerular filtration rates (estimated from the clearances of Hippuran and EDTA during oral water(More)
1 The disposition in urine of debrisoquine and its hydroxylated metabolites has been studied in subjects of the 'extensive metabolizer' (EM; n = 5) and 'poor metabolizer' (PM; n = 5) phenotypes. The 4-hydroxylation of debrisoquine by PM subjects following a 10 mg oral dose was capacity-limited and displayed significant dose-dependency over a range of 1-20(More)
The growth and survival of Stomoxys calcitrans (L.) larvae on egg yolk medium inoculated with bacteria isolated from a colony of stable flies was evaluated. Five species of bacteria--Acinetobacter sp., Aeromonas sp., Empedobacter breve (Holmes & Owen), Flavobacterium odoratum Stutzer, and Serratia marcescens Bizio--were identified according to fatty acid(More)
HIGH concentration oxygen therapy is often required after acute myocardial infarction, as hypoxia is common and may be resistant to oxygen therapy (MacKenzie et al., 1964; McNicol et al., 1965). While 100% oxygen is probably the treatment of choice, the apparatus for its administration, a tight-fitting face mask with valve box and reservoir or demand valve,(More)