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Theophylline's first clinical use came in 1902 as a diuretic. [35] It took an additional 20 years until it was first reported as an asthma treatment. [ 36 ] The drug was prescribed in a syrup up to the 1970s as Theostat 20 and Theostat 80, and by the early 1980s in a tablet form called Quibron.
8-Phenyltheophylline (8-phenyl-1,3-dimethylxanthine, 8-PT) is a drug derived from the xanthine family which acts as a potent and selective antagonist for the adenosine receptors A 1 and A 2A, but unlike other xanthine derivatives has virtually no activity as a phosphodiesterase inhibitor.
Later research found that the combination was no more effective for asthma than theophylline alone but produced more side effects. [9] [1] [12] [7] Combinations of theophylline, ephedrine, and phenobarbital (brand name Tedral among others) have also been widely used to treat asthma.
The Nun Study of Aging and Alzheimer's Disease is a continuing longitudinal study, begun in 1986, to examine the onset of Alzheimer's disease. [1] [2] David Snowdon, an Epidemiologist and the founding Nun Study investigator, started the Nun Study at the University of Minnesota, later transferring the study to the University of Kentucky in 1990. [3]
The therapeutic index (TI; also referred to as therapeutic ratio) is a quantitative measurement of the relative safety of a drug with regard to risk of overdose. It is a comparison of the amount of a therapeutic agent that causes toxicity to the amount that causes the therapeutic effect . [ 1 ]
Dementia A recent study carried out by experts from the University of Nottingham and funded by the National Institute for Health Research (NIHR) has shown there to be an increased risk of up to 50% of patients developing Dementia due to some of these medications and cautions have been advised with their use.
Dementia: The International Journal of Social Research and Practice is a bimonthly peer-reviewed academic journal that covers research in the field of dementia studies. Its editors-in-chief are Dr. Pamela Roach (University of Calgary) [1] and Dr. Caroline Swarbrick (University of Lancaster) [2] .
The prevention of dementia involves reducing the number of risk factors for the development of dementia, and is a global health priority needing a global response. [1] [2] Initiatives include the establishment of the International Research Network on Dementia Prevention (IRNDP) [3] which aims to link researchers in this field globally, and the establishment of the Global Dementia Observatory ...
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