Ageing and survival after different doses of heat shock: the results of analysis of data from stress experiments with the nematode worm Caenorhabditis elegans.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Yashin, AI; Cypser, JR; Johnson, TE; Michalski, AI; Boyko, SI; Novoseltsev, VN

Published Date

  • September 2001

Published In

Volume / Issue

  • 122 / 13

Start / End Page

  • 1477 - 1495

PubMed ID

  • 11470134

Electronic International Standard Serial Number (EISSN)

  • 1872-6216

International Standard Serial Number (ISSN)

  • 0047-6374

Digital Object Identifier (DOI)

  • 10.1016/s0047-6374(01)00273-1


  • eng