| how do duration, frequency, and intensity of exogenous cort elevation affect immune outcomes of stress? | stress is typically characterized as "acute" (lasting from minutes to hours) or "chronic" (lasting from days to months). these terms are of limited use as they are inconsistently used and only encompass one aspect of the stressor (duration). short and long duration stress are generally thought to produce specific outcomes (e.g. acute stress enhances while chronic stress suppresses immune function). we propose that aspects of stress other than duration, such as frequency and intensity, are import ... | 2015 | 26209864 |
| immune responses of eastern fence lizards (sceloporus undulatus) to repeated acute elevation of corticosterone. | prolonged elevations of glucocorticoids due to long-duration (chronic) stress can suppress immune function. it is unclear, however, how natural stressors that result in repeated short-duration (acute) stress, such as frequent agonistic social encounters or predator attacks, fit into our current understanding of the immune consequences of stress. since these types of stressors may activate the immune system due to increased risk of injury, immune suppression may be reduced at sites where individu ... | 2014 | 24852352 |