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Related Experiment Video

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The Complete and Updated "Rotifer Polyculture Method" for Rearing First Feeding Zebrafish
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Redox Modulating Factors Affect Longevity Regulation in Rotifers.

Lilla Macsai1, Zita Olah1, Ashley I Bush2

  • 1Department of Psychiatry, Faculty of Medicine, Albert Szent-Gyorgyi Clinical Center, University of Szeged, Hungary.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|August 31, 2018
PubMed
Summary

This study introduces a novel method combining chemical electron deprivation and extreme caloric restriction (ECR) to significantly extend rotifer lifespan. Treated rotifers, termed "super rotifers," exhibited a fourfold increase in longevity and maintained reproductive capacity.

Keywords:
AntiagingBdelloid rotiferCaloric restrictionInvertebrateLife-span extension

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Area of Science:

  • Gerontology
  • Biochemistry
  • Microbiology

Background:

  • Rotifers are established microinvertebrate models for studying aging mechanisms.
  • Understanding phylogenetically based aging requires novel physiological systems.
  • Investigating redox modulation's role in aging is crucial.

Purpose of the Study:

  • To develop a physiological system inducing electron deprivation combined with extreme caloric restriction (ECR).
  • To evaluate the effects of chemical electron carriers/acceptors and ECR on rotifer aging.
  • To identify interventions that delay aging and enhance longevity in microinvertebrates.

Main Methods:

  • Middle-aged Philodina acuticornis rotifers underwent preselection with phenazine methosulfate (PMS) and XTT (electron acceptor) under food deprivation.
  • The reduction capability of XTT was validated in vitro and in vivo.
  • Survivors received XTT and ECR treatment for several months.

Main Results:

  • A fourfold increase in rotifer longevity was observed following PMS/XTT preselection and subsequent XTT/ECR treatment.
  • Ascorbic acid showed similar but less potent effects on longevity.
  • The synergistic intervention created "super rotifers" with extended lifespan and retained reproduction.

Conclusions:

  • Chemical electron deprivation coupled with ECR effectively delays aging in rotifers.
  • This model demonstrates a significant connection between redox modulation and age-related phenotypes in vivo.
  • The development of "super rotifers" offers new insights into aging research.