Evidence map›Paper›PMID 19239416›Full record

ArticleAging cell2009

Molecular architecture of myelinated peripheral nerves is supported by calorie restriction with aging.

Sunitha Rangaraju, David Hankins, Irina Madorsky, Evgenia Madorsky, Wei-Hua Lee, Christy S Carter, Christiaan Leeuwenburgh, Lucia Notterpek

Open access · bronzeAbstract read
In one paragraph

Article in Aging cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.1field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. The Role of Dietary Nutrients in Peripheral Nerve Regeneration.International journal of molecular sciences · 2021
    Review
  8. Article
  9. Dysregulation of NADThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  10. Article
  11. Review
  12. Review
  13. Promoting peripheral myelin repair.Experimental neurology · 2016
    Review
  14. Article
  15. Review
  16. Use of Nerve Conduction Velocity to Assess Peripheral Nerve Health in Aging Mice.The journals of gerontology. Series A, Biological sciences and medical sciences · 2015
    Article
  17. Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Sunitha RangarajuDepartment of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL 32610-0244, USA.
David Hankins
Irina Madorsky
Evgenia Madorsky
Wei-Hua Lee
Christy S Carter
Christiaan Leeuwenburgh
Lucia Notterpek
University of Florida · US

Funding

University of Florida Older Americans Independence Center (OAIC)P30AG028740 · NIA · UNIVERSITY OF FLORIDA · PI CHRISTIAAN LEEUWENBURGH · 2007 to 2026
$22.8M
Cellular events in heritable peripheral neuropathiesR01NS041012 · NINDS · UNIVERSITY OF FLORIDA · PI NOTTERPEK, LUCIA · 2001 to 2013
$3.5M
ACE Inhibition and Physical Performance in Aged RatsR01AG024526 · NIA · UNIVERSITY OF FLORIDA · PI CARTER, CHRISTY SHAWN · 2005 to 2009
$1.8M
Apoptosis and Life-Long Caloric RestrictionR01AG021042 · NIA · UNIVERSITY OF FLORIDA · PI LEEUWENBURGH, CHRISTIAAN · 2003 to 2007
$1.7M
NIA NIH HHS 5R01AG-021042NIA NIH HHS P30 AG028740NIA NIH HHS R01 AG021042NIA NIH HHS R01 AG024526NIA NIH HHS R01-AG024526NINDS NIH HHS NS041012NINDS NIH HHS R01 NS041012
6 · The paper itself

Abstract

Peripheral nerves from aged animals exhibit features of degeneration, including marked fiber loss, morphological irregularities in myelinated axons and notable reduction in the expression of myelin proteins. To investigate how protein homeostatic mechanisms change with age within the peripheral nervous system, we isolated Schwann cells from the sciatic nerves of young and old rats. The responsiveness of cells from aged nerves to stress stimuli is weakened, which in part may account for the observed age-associated alterations in glial and axonal proteins in vivo. Although calorie restriction is known to slow the aging process in the central nervous system, its influence on peripheral nerves has not been investigated in detail. To determine if dietary restriction is beneficial for peripheral nerve health and glial function, we studied sciatic nerves from rats of four distinct ages (8, 18, 29 and 38 months) kept on an ad libitum (AL) or a 40% calorie restricted diet. Age-associated reduction in the expression of the major myelin proteins and widening of the nodes of Ranvier are attenuated by the dietary intervention, which is paralleled with the maintenance of a differentiated Schwann cell phenotype. The improvements in nerve architecture with diet restriction, in part, are underlined by sustained expression of protein chaperones and markers of the autophagy-lysosomal pathway. Together, the in vitro and in vivo results suggest that there might be an age-limit by which dietary intervention needs to be initiated to elicit a beneficial response on peripheral nerve health.

Indexed as

AgingAnimalsAnimals, NewbornAutophagyCaloric RestrictionCell DifferentiationCells, CulturedFood DeprivationMaleMolecular ChaperonesMyelin ProteinsMyelin SheathPeripheral NervesPeripheral Nervous System DiseasesRatsRats, Inbred F344Molecular ChaperonesMyelin Proteins

Identifiers

PMID19239416
PMCPMC2715941
OpenAlexW1979265577

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.