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Measurement of Survival Time in Brachionus Rotifers: Synchronization of Maternal Conditions
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Rotifers as experimental tools for investigating aging.

Terry W Snell1, Rachel K Johnston1, Kristin E Gribble2

  • 1School of Biology, Georgia Institute of Technology, Atlanta, Georgia, 30332-0230, USA.

Invertebrate Reproduction & Development
|February 3, 2015
PubMed
Summary

Rotifers, understudied lophotrochozoans, offer insights into aging. Interventions like caloric restriction and genetic studies reveal mechanisms to extend lifespan and understand aging processes.

Keywords:
JNKTORagingantioxidantscaloric restrictioncomparative biogerontologyevolution

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Area of Science:

  • Biogerontology
  • Evolutionary biology
  • Developmental biology

Background:

  • Comparative biogerontology studies aging rates across species.
  • Lophotrochozoa, particularly rotifers, exhibit diverse aging patterns and are suitable for aging research due to available tools.
  • Understanding aging adaptations provides insights into fundamental aging mechanisms.

Purpose of the Study:

  • To review interventions that extend rotifer lifespan.
  • To explore interactions between lifespan-extending factors and aging pathways.
  • To discuss methods for identifying genes involved in aging and future research directions.

Main Methods:

  • Review of caloric restriction, small molecule inhibitors, and dietary supplements.
  • Analysis of interactions between caloric restriction, genotype, antioxidants, and signaling pathways (TOR, JNK).
  • Utilization of RNA interference (RNAi) for gene identification and experimental evolution.

Main Results:

  • Caloric restriction, specific small molecules, and dietary supplements were found to extend rotifer lifespan.
  • Interactions between caloric restriction and genotype, antioxidants, and pathways like TOR and JNK influence aging.
  • Rapamycin and JNK inhibitors maintained low mortality rates during the reproductive phase.

Conclusions:

  • Rotifers are valuable models for aging research, amenable to life table experiments and genetic analysis.
  • Interventions targeting specific pathways and genetic modifications can modulate the aging response.
  • Further research can elucidate the genetic basis of aging using rotifer models and experimental evolution.