Evidence map›Paper›PMID 33331456›Full record

ArticleActa cirurgica brasileira2020

Stereological study and analysis of oxidative stress during renal aging in rats.

Eduardo Felippe Melchioretto, Marcelo Zeni, Djanira Aparecida da Luz Veronez, Francisco Filipak Neto, Ingridy de Souza Digner, Rogerio de Fraga

Open access · goldAbstract read
In one paragraph

Article in Acta cirurgica brasileira, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.7field-weighted citation impact, top 25% 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

1 citing paper in PubMed, 5 citations in OpenAlex.

  1. Antidiabetic Potential of Sea UrchinCurrent issues in molecular biology · 2025
    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

6 authors at 3 institutions in 2 countries.

Eduardo Felippe MelchiorettoFellow PhD degree, Postgraduate Program in Surgical Clinic, Universidade Federal do Paraná, Curitiba - PR, Brazil. Conception and design, manuscript preparation and writing, critical revision.ORCID http://orcid.org/0000-0003-2911-2850
Marcelo ZeniFellow Master degree, Department of Urology, Medical School, Universidade Federal da Fronteira Sul, Chapecó - SC, Brazil. Design.ORCID http://orcid.org/0000-0002-3072-2106
Djanira Aparecida da Luz VeronezPhD, Associate Professor, Department of Anatomy, Medical School, Universidade Federal do Paraná, Curitiba - PR, Brazil. Conception and design.ORCID http://orcid.org/0000-0002-2504-6318
Francisco Filipak NetoPhD, Associate Professor, Department of Cellular and Molecular Biology, Medical School, Universidade Federal do Paraná, Curitiba - PR, Brazil. Conception and design.ORCID http://orcid.org/0000-0003-2838-2242
Ingridy de Souza DignerGraduate student, Little Prince College, Curitiba - PR, Brazil. Design, manuscript preparation and writing, critical revision.ORCID http://orcid.org/0000-0003-1701-417X
Rogerio de FragaPhD, Associate Professor, Department of Urology, Medical School, Universidade Federal do Paraná, Curitiba - PR, Brazil. Conception and design.ORCID http://orcid.org/0000-0002-9012-3922
Universidade Federal do Paraná · BRPrecision for Medicine (United States) · USUniversidade Federal da Fronteira Sul · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate renal histological changes by stereology and morphometry and analyze the main markers of oxidative stress in rats undergoing natural aging.

methodsSeventy two Wistar rats were divided into six groups of 12 rats each, which were euthanized at 3, 6, 9, 12, 18, and 24 months of age. Right kidney was stereologically and morphometrically analyzed to calculate the volumetric density (Vv[glom]), numerical density (Nv[glom]) and glomerular volume (Vol[glom]). Left kidney was used to determine the levels of nonprotein thiols, lipid peroxidation, and protein carbonylation, as well as the activities of superoxide-dismutase and catalase enzymes.

resultsBoth Vv[glom] and Nv[glom] values showed gradual decreases between groups. Activity of superoxide-dismutase was elevated at 24 months of age, and the levels of nonprotein thiols were higher in older animals. Greater catalase activity and protein carbonylation were observed in animals between 6 and 12 months of age but lessened in older rats. Lipid peroxidation decreased in the older groups.

conclusionsMorphometric and stereological analyses revealed a gradual decrease in the volume and density of renal glomeruli during aging, as well as kidney atrophy. These findings related to oxidative stress clarify many changes occurring in kidney tissues during senescence in rats.

Indexed as

KidneyKidney DiseasesAgingAnimalsCatalaseLipid PeroxidationOxidative StressRatsRats, WistarSuperoxide DismutaseCatalaseSuperoxide Dismutase

Identifiers

PMID33331456
PMCPMC7748077
OpenAlexW3117810205

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.