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C J Buggé S R Gautam L E Parke J T Mason D B Garcia 《Journal of pharmaceutical sciences》1990,79(12):1095-1098
An HPLC method is described for the simultaneous and rapid determination of sulfasalazine (salicylazosulfapyridine) and two of its metabolites, sulfapyridine and N-acetylsulfapyridine, in human serum. The range of quantitation is 0.1 to 12 micrograms/mL for sulfasalazine and sulfapyridine and 0.25 to 12 micrograms/mL for N-acetylsulfapyridine. Serum is mixed with acetonitrile containing the internal standard sulfamethazine and the ion-pairing agent tetraethylammonium chloride. The acetonitrile extract is concentrated and analyzed by HPLC, using a new polymer-based column, and detected by UV spectroscopy at 270 nm. This paper is the first both to describe the simultaneous analysis of all three of the compounds from serum and to present sulfasalazine concentration-time data following oral administration to humans. 相似文献
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Jonathan Parke Mark D. Griffiths Adrian Parke 《International journal of mental health and addiction》2007,5(1):39-52
Background Research has demonstrated that optimism and “positive illusions” can be used a coping mechanism among those facing adversity.
Gamblers are a little studied group who also experience adversity and uncertainty. They often feel considerable levels of
frustration, guilt, anger and a sense of feeling cheated after making significant losses. In order to deal with such feelings
it is hypothesized that these individuals will search for positive consequences from their behaviour in order to offset this
negative affect.
Objectives To (1) determine whether after gambling, gamblers compensate and reduce negative affect by identifying positive consequences
from experiencing a loss, and (2) identify types of strategies which gamblers employ and consider how these should be classified.
Materials and Methods Eighty-seven regular slot machine gamblers were interviewed in a variety of environments housing slot machines. Each participant
was asked a series of questions in a semi-structured format, to explore possible styles of positive thinking.
Results Nine types of ‘positive thinking’ experienced by gamblers were identified. These included Comparative thinking, Prophylactic thinking, Biased frequency thinking, Responsibility avoidance, Chasing Validation, Prioritization,
Resourcefulness, Thoughtfulness, and Fear Reduction. Gamblers who were positive thinkers experienced significantly less guilt than non-positive thinkers.
Conclusions While reduction of negative affect may be perceived as positive in many other contexts, it is argued that it may counteract
efforts to promote responsible gambling. Clinical implications and directions for future research are discussed. 相似文献
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A de novo paracentric inversion of chromosome 11 identified through antenatal diagnosis is described along with long-term follow-up information on the child and discussion of reported experiences with de novo inversions. 相似文献
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