Cited by 32Muscle Physiology and DisordersGenetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and Therapy

"Sr stress" in mixed hindlimb muscles of aging Male rats

Russ, David W., Krause, Jodi, Wills, Allison, Arreguin, Raymond·2012·Biogerontology

Abstract

Impaired sarcoplasmic reticulum (SR) function has been associated with reduced muscle force generation and locomotor function in aging animals. This study was conducted to determine the extent to which aging increased SR stress markers in male rats, and the extent to which volitional exercise affected them. We harvested medial gastrocnemius muscles from F344/BN rats that were adult (8 months; n = 8), aging (24 months; n = 8) and that aged with wheel access for 16 months (24 months; n = 4). SR calcium handling assays and immunoblotting (Caspase 12, dysferlin and LC3) were performed on crude homogenates and SR-enriched microsomal fractions. Aging was associated with increased Caspase 12 and SR dysferlin, as well as a reduced LC3II/I ratio and impaired calcium release. Despite further increases in Caspase 12, voluntary wheel running partially restored SR calcium release and dysferlin toward younger levels. Of note, the LC3II/I was also partially restored in the voluntary wheel running group, suggesting increased autophagy. These results suggest that impaired SR function with aging is associated with age-related increases in SR stress, possibly related to reduced autophagy. Long-term volitional exercise improved SR function and markers of autophagy, despite increased Caspase 12, suggesting that running contributed a beneficial stress that differed from the "distress" of sedentary aging.

Integrity signals

Registry

Crossref · 10.1007/s10522-012-9399-y

Cites

53 of 53 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Impaired mitochondrial autophagy (mitophagy) machinery is another primary cause of mitochondrial dysfunction in aging muscle.

    “Another primary cause of mitochondrial dysfunction in aging muscle is the impaired mitochondrial autophagy (mitophagy) machinery.”
  • Aging provokes alterations of several key mitophagy regulators, leading to mitophagy deficiency and subsequent accumulation of dysfunctional mitochondria in skeletal muscle.

    “Studies indicate that aging provokes certain alternations of several key mitophagy regulators, leading to mitophagy deficiency and subsequent accumulation of dysfunctional mitochondria in skeletal muscle (91, 92).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Russ, D. W., Krause, J., Wills, A., & Arreguin, R.
Affiliations
Ohio University (US)
Corresponding author
Russ, David W.
Venue
Biogerontology
Published
2012-09-06
Volume
13
Issue
5
Pages
547-555
ISSN
  • 1389-5729 (ISSN-L)
  • 1573-6768
OpenAlex
W2072581177
Cited by
32
References
53
Citations by year
2026: 1 · 2024: 1 · 2023: 2 · 2021: 4 · 2020: 2 · 2019: 2 · 2018: 3 · 2017: 4 · 2016: 4 · 2015: 6 · 2014: 1 · 2013: 2
FWCI
1.16
Type
journal article
Language
en
Open access
closed
Locations
  • Biogerontology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
sarcoplasmic reticulum calcium handling, muscle aging, voluntary wheel running, autophagy, caspase-12, dysferlin, LC3, medial gastrocnemius, hindlimb muscles, sarcoplasmic reticulum calcium release, exercise and aging
MeSH terms
Aging, Animals, Calcium, Electrophoresis, Polyacrylamide Gel, Hindlimb, Male, Sarcoplasmic Reticulum, Stress, Physiological, Blotting, Western, Muscle, Skeletal, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review