Evidence map›Paper›PMID 20592768›Full record

ArticleOxidative medicine and cellular longevity

Aging increases oxidative stress and renal expression of oxidant and antioxidant enzymes that are associated with an increased trend in systolic blood pressure.

Pedro Gomes, Sónia Simão, Elisabete Silva, Vanda Pinto, João S Amaral, Joana Afonso, Maria Paula Serrão, Maria João Pinho, Patrício Soares-da-Silva

Open access · hybridAbstract read
In one paragraph

Article in Oxidative medicine and cellular longevity. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

37 citing papers in PubMed, 62 citations in OpenAlex.

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  10. Perinatal Obesity Sensitizes for Premature Kidney Aging Signaling.International journal of molecular sciences · 2023
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  20. The aging kidney and the nephrotoxic effects of mercury.Journal of toxicology and environmental health. Part B, Critical reviews · 2017
    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

9 authors at 2 institutions in 2 countries.

Pedro GomesInstitute of Pharmacology and Therapeutics, Faculty of Medicine, University of Porto, Portugal.
Sónia Simão
Elisabete Silva
Vanda Pinto
João S Amaral
Joana Afonso
Maria Paula Serrão
Maria João Pinho
Patrício Soares-da-Silva
Universidade do Porto · PTInstitute of Pharmacology · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to investigate whether the effects of aging on oxidative stress markers and expression of major oxidant and antioxidant enzymes associate with impairment of renal function and increases in blood pressure. To explore this, we determined age-associated changes in lipid peroxidation (urinary malondialdehyde), plasma and urinary hydrogen peroxide (H(2)O(2)) levels, as well as renal H(2)O(2) production, and the expression of oxidant and antioxidant enzymes in young (13 weeks) and old (52 weeks) male Wistar Kyoto (WKY) rats. Urinary lipid peroxidation levels and H(2)O(2) production by the renal cortex and medulla of old rats were higher than their young counterparts. This was accompanied by overexpression of NADPH oxidase components Nox4 and p22(phox) in the renal cortex of old rats. Similarly, expression of superoxide dismutase (SOD) isoforms 2 and 3 and catalase were increased in the renal cortex from old rats. Renal function parameters (creatinine clearance and fractional excretion of sodium), diastolic blood pressure and heart rate were not affected by aging, although slight increases in systolic blood pressure were observed during this 52-week period. It is concluded that overexpression of renal Nox4 and p22(phox) and the increases in renal H(2)O(2) levels in aged WKY does not associate with renal functional impairment or marked increases in blood pressure. It is hypothesized that lack of oxidative stress-associated effects in aged WKY rats may result from increases in antioxidant defenses that counteract the damaging effects of H(2)O(2).

Indexed as

AgingOxidative StressAnimalsAntioxidantsBlood PressureCatalaseHeart RateHydrogen PeroxideKidney CortexLipid PeroxidationMaleNADPH Oxidase 4NADPH OxidasesOxidantsRatsRats, Inbred WKYAntioxidantsCatalaseCyba protein, ratHydrogen PeroxideNADPH Oxidase 4NADPH OxidasesNox4 protein, ratOxidantsSod3 protein, ratSuperoxide DismutaseSuperoxide Dismutase 2agingantioxidant enzymeshydrogen peroxidekidneyNADPH oxidaseoxidative stressWistar Kyoto rat

Identifiers

PMID20592768
PMCPMC2763239
OpenAlexW2170786253

What OpenQuestion holds

Textmetadata
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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.