Ageing and survival after different doses of heat shock: the results of analysis of data from stress experiments with the nematode worm Caenorhabditis elegans.
Stress experiments performed on a population of sterilised nematode worms (Caenorhabditis elegans) show a clear hormesis effect after short exposure and clear debilitation effects after long exposure to heat shock. An intermediate duration of exposure results in a mixture of these two effects. In this latter case the survival curves for populations in the stress and control groups intersect. In this paper we develop an adaptation model of stress and apply it to the analysis of survival data from three such stress experiments. We show that the model can be used to explain empirical age-patterns of mortality and survival observed in these experiments. We discuss possible biological mechanisms involved in stress response and directions for further research.
Duke Scholars
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Related Subject Headings
- Stress, Physiological
- Models, Biological
- Likelihood Functions
- Heat-Shock Response
- Gerontology
- Caenorhabditis elegans
- Animals
- Aging
- Adaptation, Physiological
- 3202 Clinical sciences
Citation
Published In
DOI
EISSN
ISSN
Publication Date
Volume
Issue
Start / End Page
Related Subject Headings
- Stress, Physiological
- Models, Biological
- Likelihood Functions
- Heat-Shock Response
- Gerontology
- Caenorhabditis elegans
- Animals
- Aging
- Adaptation, Physiological
- 3202 Clinical sciences