Joanna E. Long

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These studies were conducted to evaluate the potential toxicity of ammonium perfluorooctanoate, a commercial surfactant. They include acute and subchronic feeding studies with rabbits, mice, rats and monkeys as well as in vitro mutagenicity assays with Salmonella typhimurium and Saccharomyces cerevisiae. The compound was non-irritating to the skin and(More)
OBJECTIVE To assess whether a life-style physical activity intervention improved antibody response to a pneumococcal vaccination in sedentary middle-aged women. METHODS Eighty-nine sedentary women completed a 16-week exercise (physical activity consultation, pedometer, telephone/e-mail prompts; n = 44) or control (advisory leaflet; n = 45) intervention.(More)
Five-hundred and sixty Sprague-Dawley rats were randomized into one control and three treatment groups (70 of each sex per group). Animals were treated by daily gavage with 0.0, 0.05, 0.5 and 2.5 mg kg-1 acrolein in water (10 ml kg-1). These dosing levels were selected as a result of a 6-week range-finding study. Ten rats of each sex per group were(More)
Acute exercise prior to vaccination can improve the antibody response to influenza vaccination. However, both the optimal exercise protocol and the mechanisms underpinning this adjuvant effect remain unclear. The aim of the current study was to determine whether exercise intensity influenced the efficacy of the intervention. One hundred and sixty healthy(More)
Comparative intestinal nitroreductase, azo reductase, beta-glucuronidase, dechlorinase and dehydrochlorinase activities in young male Fischer 344 rats and young male CD-1 mice were measured in vitro while the comparative biotransformation of 2,6-dinitrotoluene to mutagenic metabolites was determined in vivo. The mice, which exhibit a high spontaneous(More)
Forty-eight dogs were separated into four groups of six males and six females. Acrolein (0.1% aqueous) was administered in gelatin capsules to three of these groups at dosing levels of 0.1, 0.5 and 1.5 mg kg-1 day-1 based on results of a range-finding study. After 4 weeks, the high dose was increased to 2 mg kg-1 day-1. The fourth group received deionized(More)
BACKGROUND AND AIMS OF THE STUDY The study aim was to examine the effects of balloon mitral valvotomy (BMV) on exercise-induced hyperkalemia, and on changes in the concentration of Na,K-pumps in skeletal muscle, as an exaggerated exercise-induced rise in potassium concentration ([K+]) may contribute to exertional fatigue and breathlessness. METHODS Eight(More)
A previously reported acceleration of parathion metabolism in the gastrointestinal (GI) tract of lindane-pretreated rats could have been due to either a prolonged residence time of parathion or increased GI nitroreductase activity or both. Thus to determine the effect on GI nitroreductase and dechlorinase activity, 20 mg/kg lindane or 535 mg/kg neomycin(More)
OBJECTIVES Older adults are less able to produce a protective antibody response to vaccinations. One factor that contributes to this is immune ageing. Here we examined whether diurnal variations in immune responses might extend to the antibody response to vaccination. DESIGN We utilised a cluster-randomised trial design. SETTING 24 General Practices(More)