Evidence map›Paper›PMID 20197085›Full record

ArticleExperimental gerontology2010

In vivo analysis of gene expression in long-lived mice lacking the pregnancy-associated plasma protein A (PappA) gene.

William R Swindell, Michal M Masternak, Andrzej Bartke

Open access · greenAbstract read
In one paragraph

Article in Experimental gerontology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 30 citations in OpenAlex.

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  16. Key questions and answers about pregnancy-associated plasma protein-A.Trends in endocrinology and metabolism: TEM · 2012
    Review
  17. Metallothionein and the biology of aging.Ageing research reviews · 2011
    Review
  18. Review
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.

William R SwindellUniversity of Michigan, Department of Pathology and Geriatrics Center, Ann Arbor, MI 48109-2200, USA. wswindel@umich.edu
Michal M Masternak
Andrzej Bartke
Southern Illinois University School of Medicine · USMichigan Medicine · US

Funding

Systems BiologyU19AG023122 · NIA · TRANSLATIONAL GENOMICS RESEARCH INST · PI Thomas Girke, NICHOLAS Joseph SCHORK · 2004 to 2026
$102.6M
Research Education CoreP30AG024824 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Neil Alexander · 2004 to 2026
$29.2M
Research Training in BiogerontologyT32AG000114 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SCOTT PLETCHER · 1985 to 2026
$12.4M
TRAINING PROGRAM IN CELL AND MOLECULAR DERMATOLOGYT32AR007197 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JAMES TILFORD ELDER, Sunny Y Wong · 1986 to 2026
$4.2M
NIAMS NIH HHS T32 AR007197NIAMS NIH HHS T32-AR007197NIA NIH HHS AG023122NIA NIH HHS AG024824NIA NIH HHS AG198899NIA NIH HHS P30 AG024824NIA NIH HHS T32 AG000114NIA NIH HHS T32-AG00114NIA NIH HHS U19 AG023122
6 · The paper itself

Abstract

Mice lacking the pregnancy-associated plasma protein A (PappA) gene exhibit diminished localized IGF-1 bioavailability and a 30% increase in mean life span. However, it is uncertain which tissues exhibit reduced IGF-1 signals in the PappA(-/-) mouse, and whether effects of this mutation parallel those of mutations that diminish IGF-1 in serum. Across a panel of 21 tissues, we used RT-PCR to evaluate the effects of the PappA(-/-) mutation on expression of Igfbp5, which served as an in vivo indicator of IGF-1 signaling. Among these tissues, expression of Igfbp5 was significantly reduced by PappA(-/-) only in kidney. A broader survey of IGF-associated genes in six organs identified five other genes responsive to PappA(-/-) in kidney, with stronger effects in this organ relative to other tissues. Renal expression of Irs1 and Mt1 was increased by PappA(-/-) as well as by mutations that reduce IGF-1 in serum (i.e., Ghr(-/-), Pit1(dw/dw) and Prop1(df/df)), and we demonstrate that expression of these genes is regulated by growth hormone-treatment and calorie restriction. These results provide in vivo data on an important new model of mammalian aging, and characterize both similar and contrasting expression patterns between long-lived mice with reduced local IGF-1 availability and diminished IGF-1 in serum.

Indexed as

LongevityAnimalsCarrier ProteinsGene Expression ProfilingGene Expression RegulationGlycoproteinsGrowth HormoneInsulin-Like Growth Factor Binding Protein 4Insulin-Like Growth Factor Binding Protein 5Insulin-Like Growth Factor IInsulin Receptor Substrate ProteinsKidneyMetallothioneinMiceMice, Inbred StrainsPregnancy-Associated Plasma Protein-ACarrier ProteinsGlycoproteinsGrowth HormoneInsulin-Like Growth Factor Binding Protein 4Insulin-Like Growth Factor Binding Protein 5insulin-like growth factor binding protein, acid labile subunitInsulin-Like Growth Factor IInsulin Receptor Substrate ProteinsIrs1 protein, mouseMetallothioneinPregnancy-Associated Plasma Protein-A

Identifiers

PMID20197085
PMCPMC2860881
OpenAlexW1975113714

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.