Adaptation of corticosterone-but not β-endorphin-secretion to repeated blood sampling in rats
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Repeated sampling but not sampling hour affects plasma carotenoid levels.
Carotenoid pigments have become a central subject of research on animal signaling systems during the past decade. Thus, measurement of plasma carotenoid levels is widespread in the literature. Many plasma biochemical parameters tend to vary with the hour of sampling, which may be an important source of sampling error. However, little is known about this kind of variation for circulating caroten...
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متن کاملComparative analysis of ACTH and corticosterone sampling methods in rats.
A frequently debated question for studies involving the measurement of stress hormones in rodents is the optimal method for collecting blood with minimal stress to the animal. Some investigators prefer the implantation of indwelling catheters to allow for frequent sampling. Others argue that the implantation of a catheter creates a chronic stress to the animal that confounds stress hormone meas...
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ژورنال
عنوان ژورنال: Laboratory Animals
سال: 1999
ISSN: 0023-6772,1758-1117
DOI: 10.1258/002367799780578309