منابع مشابه
Physiological concentrations of DHEA in human hair.
In 1974, steroids were added to the list of doping agents banned by the International Olympic Committee because of their effects on the performance of the athletes. Dehydroepiandrosterone (DHEA) is a steroid hormone naturally produced by the adrenal glands and by the ovaries. DHEA can be converted into other hormones, including estrogen and testosterone. In the United States, DHEA is classified...
متن کاملFirst identification of prednisone in human hair by liquid chromatography-ionspray mass spectrometry.
A wide range of methodologies have been investigated for the determination of corticosteroids in biological fluids, including radioimmunoassay (1), high-performance liquid chromatography (HPLC) with spectrophotometric detection (2), gas chromatography (3), and liquid or gas chromatography coupled to mass spectrometry (4,5). Blood or urine is usually employed to check drug consumption; however, ...
متن کاملScalp hair mercury concentrations in Pakistan.
The presence of mercury in the environment is widespread and persistent, but the extent of exposure of Pakistanis to mercury is virtually unknown. We collected toenail and scalp hair samples from 158 subjects (83 males and 75 females) residing in Lahore and its suburbs. We also conducted a questionnaire survey and personal interviews to obtain information on demographic factors, lifestyles, and...
متن کاملIntraindividual stability of hair cortisol concentrations.
The analysis of cortisol in human hair constitutes a promising method for the retrospective assessment of cumulative cortisol secretion over extended periods of time. An implicit assumption underlying the use of this method is that in the absence of major life changes hair cortisol concentrations show a high level of intraindividual stability, i.e. single hair cortisol assessments exhibit consi...
متن کاملAnalysis of Serum Zinc and Copper Concentrations in Hair Loss
BACKGROUND It is well known that some trace elements such as zinc and copper play a significant role in many forms of hair loss. However, the effect of zinc and copper in the pathogenesis of hair loss is still unknown. OBJECTIVE The purpose of this study is to evaluate the zinc and copper status in each of four types of hair loss. METHODS A study was carried out with 30 health controls and ...
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ژورنال
عنوان ژورنال: Journal of Analytical Toxicology
سال: 2002
ISSN: 0146-4760,1945-2403
DOI: 10.1093/jat/26.2.110