Evidence map›Paper›PMID 19208908›Full record

ArticleDiabetes2009

Mechanisms of podocyte injury in diabetes: role of cytochrome P450 and NADPH oxidases.

Assaad A Eid, Yves Gorin, Bridget M Fagg, Rita Maalouf, Jeffrey L Barnes, Karen Block, Hanna E Abboud

Abstract read
In one paragraph

Article in Diabetes, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 173 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
173citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

173 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  17. A Putative Role for TRPC6 in Immune-Mediated Kidney Injury.International journal of molecular sciences · 2023
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113 more citing papers are in PubMed but not listed here.

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

7 authors.

Assaad A EidUniversity of Texas Health Science Center, Department of Medicine, San Antonio, Texas, USA.
Yves Gorin
Bridget M Fagg
Rita Maalouf
Jeffrey L Barnes
Karen Block
Hanna E Abboud

Funding

Transgenic Animal and Morphology CoreP50DK061597 · NIDDK · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI FELIERS, DENIS · 2003 to 2007
$5.0M
Renal Cell Response in DiabetesR01DK078971 · NIDDK · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI ABBOUD, HANNA E · 2008 to 2012
$1.2M
Renal Cell Injury in DiabetesK01DK076923 · NIDDK · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI BLOCK, KAREN · 2007 to 2008
$239k
NIDDK NIH HHS DK061597NIDDK NIH HHS DK-R01-078971NIDDK NIH HHS K01 DK076923NIDDK NIH HHS K01DK-076923NIDDK NIH HHS P50 DK061597NIDDK NIH HHS R01 DK078971
6 · The paper itself

Abstract

objectiveWe investigated the role of cytochrome P450 of the 4A family (CYP4A), its metabolites, and NADPH oxidases both in reactive oxygen species (ROS) production and apoptosis of podocytes exposed to high glucose and in OVE26 mice, a model of type 1 diabetes. RESEARCH DESIGN AND

methodsApoptosis, albuminuria, ROS generation, NADPH superoxide generation, CYP4A and Nox protein expression, and mRNA levels were measured in vitro and in vivo.

resultsExposure of mouse podocytes to high glucose resulted in apoptosis, with approximately one-third of the cells being apoptotic by 72 h. High-glucose treatment increased ROS generation and was associated with sequential upregulation of CYP4A and an increase in 20-hydroxyeicosatetraenoic acid (20-HETE) and Nox oxidases. This is consistent with the observation of delayed induction of NADPH oxidase activity by high glucose. The effects of high glucose on NADPH oxidase activity, Nox proteins and mRNA expression, and apoptosis were blocked by N-hydroxy-N'-(4-butyl-2-methylphenol) formamidine (HET0016), an inhibitor of CYP4A, and were mimicked by 20-HETE. CYP4A and Nox oxidase expression was upregulated in glomeruli of type 1 diabetic OVE26 mice. Treatment of OVE26 mice with HET0016 decreased NADPH oxidase activity and Nox1 and Nox4 protein expression and ameliorated apoptosis and albuminuria.

conclusionsGeneration of ROS by CYP4A monooxygenases, 20-HETE, and Nox oxidases is involved in podocyte apoptosis in vitro and in vivo. Inhibition of selected cytochrome P450 isoforms prevented podocyte apoptosis and reduced proteinuria in diabetes.

Indexed as

AnimalsCytochrome P-450 CYP4ADiabetes Mellitus, Type 1Disease Models, AnimalEnzyme InductionEnzyme InhibitorsGlucoseHydroxyeicosatetraenoic AcidsMiceMice, Mutant StrainsNADH, NADPH OxidoreductasesNADPH Oxidase 1NADPH Oxidase 4NADPH OxidasesPodocytesReactive Oxygen Species20-hydroxy-5,8,11,14-eicosatetraenoic acidCytochrome P-450 CYP4AEnzyme InhibitorsGlucoseHydroxyeicosatetraenoic AcidsNADH, NADPH OxidoreductasesNADPH Oxidase 1NADPH Oxidase 4NADPH OxidasesNOX1 protein, mouseNox4 protein, mouseReactive Oxygen SpeciesRNA, Messenger

Identifiers

PMID19208908
PMCPMC2671039

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.