1998
DOI: 10.1002/(sici)1097-010x(19980201)280:2<174::aid-jez8>3.3.co;2-d
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Plasma catecholamines with hemorrhage in the bullfrog, Rana catesbeiana

Abstract: The concentrations of plasma epinephrine (E) and norepinephrin (N) measured at rest in bullfrogs (Rana catesbeiana) were 12.0 and 8.2 nmol liter-1 respectively: the ratio of [E]/[N] was 1.33 (+/- SE 0.35). Adrenal glands contained high concentrations of epinephrine (2,923 nmole g wet weight-1) and norepinephrine (6,194), at a ratio of 0.46 (+/- SE 0.04) [E]/[N]. This differs from the measured plasma ratio and endogenous release ratios of about 2 for [E]/[N] reported for other Rana species, although the 95% con… Show more

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“…in Perry and Capaldo, 2011). Stress, such as induced activity to escape a predator, was shown to elevate catecholamines (Tufts et al, 1987;Withers et al, 1988;Hillman et al, 1998) and resulted in increased release of defensive skin peptides (Ramsey et al, 2010;Pask et al, 2012). The stress of dehydration also resulted in the release of catecholamines in the marine toad (Bufo marinus, now Rhinella marina) (Withers et al, 1988).…”
Section: The Hypothalamo-pituitary-interrenal Axismentioning
confidence: 99%
“…in Perry and Capaldo, 2011). Stress, such as induced activity to escape a predator, was shown to elevate catecholamines (Tufts et al, 1987;Withers et al, 1988;Hillman et al, 1998) and resulted in increased release of defensive skin peptides (Ramsey et al, 2010;Pask et al, 2012). The stress of dehydration also resulted in the release of catecholamines in the marine toad (Bufo marinus, now Rhinella marina) (Withers et al, 1988).…”
Section: The Hypothalamo-pituitary-interrenal Axismentioning
confidence: 99%