Evidence map›Paper›PMID 28600811›Full record

ArticleAging cell2017

Inducible knockdown of pregnancy-associated plasma protein-A gene expression in adult female mice extends life span.

Laurie K Bale, Sally A West, Cheryl A Conover

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.2field-weighted citation impact, top 18% 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

23 citing papers in PubMed, 26 citations in OpenAlex.

  1. Insulin-like growth factor receptor signaling in physiology and disease.Signal transduction and targeted therapy · 2026
    Review
  2. Article
  3. Article
  4. The Implications of Alternative Splicing Regulation for Maximum Lifespan.bioRxiv : the preprint server for biology · 2025
    Article
  5. The IGF System and Aging.Endocrine reviews · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Brain-specific PAPP-A knock-out mice?Experimental gerontology · 2021
    Article
  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

3 authors at 2 institutions in 1 country.

Laurie K BaleEndocrine Research Unit, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
Sally A WestEndocrine Research Unit, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
Cheryl A ConoverEndocrine Research Unit, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
WinnMed · USMayo Clinic · US

Funding

Dissection of the IGF-Longevity Connection in a Novel Mouse ModelR01AG028141 · NIA · MAYO CLINIC ROCHESTER · PI CONOVER, CHERYL A. · 2007 to 2016
$2.9M
NIA NIH HHS R01 AG028141
6 · The paper itself

Abstract

Pregnancy-associated plasma protein-A (PAPP-A) knockout (KO) mice, generated through homologous recombination in embryonic stem cells, have a significantly increased lifespan compared to wild-type littermates. However, it is unknown whether this longevity advantage would pertain to PAPP-A gene deletion in adult animals. In the present study, we used tamoxifen (Tam)-inducible Cre recombinase-mediated excision of the floxed PAPP-A (fPAPP-A) gene in mice at 5 months of age. fPAPP-A mice, which were either positive (pos) or negative (neg) for Tam-Cre, received Tam treatment with quarterly boosters. Only female mice could be used with this experimental design. fPAPP-A/neg and fPAPP-A/pos mice had similar weights at the start of the experiment and showed equivalent weight gain. We found that fPAPP-A/pos mice had a significant extension of life span (P = 0.005). The median life span was increased by 21% for fPAPP-A/pos compared to fPAPP-A/neg mice. Analysis of mortality in life span quartiles indicated that the proportion of deaths of fPAPP-A/pos mice were lower than fPAPP-A/neg mice at young adult ages (P = 0.002 for 601-800 days) and higher than fPAPP-A/neg mice at older ages (P = 0.004 for >1000 days). Thus, survival curves and age-specific mortality indicate that female mice with knockdown of PAPP-A gene expression as adults have an extended healthy life span.

Indexed as

AnimalsBody WeightFemaleGene ExpressionGene Knockdown TechniquesIntegrasesLongevityMiceMice, KnockoutPregnancyPregnancy-Associated Plasma Protein-ASurvival AnalysisTamoxifenCre recombinaseIntegrasesPregnancy-Associated Plasma Protein-ATamoxifenadult miceinducible gene knockoutlifespanmortality ratespregnancy-associated plasma protein-Atamoxifen

Identifiers

PMID28600811
PMCPMC5506424
OpenAlexW2623478977

What OpenQuestion holds

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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.