Evidence map›Paper›PMID 22714800›Full record

ArticleClinical and experimental nephrology2013

Angiotensin II suppresses adenosine monophosphate-activated protein kinase of podocytes via angiotensin II type 1 receptor and mitogen-activated protein kinase signaling.

Ji-Young Choi, Tae-Sun Ha, Hye-Young Park, Hee-Yul Ahn

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Article in Clinical and experimental nephrology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.5field-weighted citation impact, top 34% of its field
1 · What the graph read from it

What it found

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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.

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 10 citations in OpenAlex.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Ji-Young ChoiDepartment of Pediatrics, College of Medicine, Chungbuk National University, 410 Sung Bong-Ro, Heungduk-gu, Cheongju 361-240, Korea.
Tae-Sun Ha
Hye-Young Park
Hee-Yul Ahn
Chungbuk National University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdenosine monophosphate (AMP)-activated protein kinase (AMPK), as a sensor of cellular energy status, has been known to play an important role in the pathophysiology of diabetes and its complications. As AMPK is also expressed in podocytes, it is possible that podocyte AMPK would be an important contributing factor in the development of diabetic proteinuria. We investigated the roles of AMPK in the pathological changes of podocytes induced by angiotensin II (Ang II), a major injury inducer in diabetic proteinuria.

methodsMouse podocytes were incubated in media containing various concentrations of Ang II and AMPK-modulating agents. The changes of AMPKα were analyzed by confocal imaging and Western blotting in response to Ang II.

resultsAng II changed the localization of AMPKα from peripheral cytoplasm into internal cytoplasm and peri- and intranuclear areas in podocytes. Ang II also reduced AMPKα (Thr172) phosphorylation in time- and dose-sensitive manners. In particular, 10(-7 )M Ang II reduced phospho-AMPKα significantly and continuously at 6, 24, and 48 h. AMPK activators, metformin and 5-aminoimidazole-4-carboxamide-1β-riboside, restored the suppressed AMPKα (Thr172) phosphorylation. Losartan, an Ang II type 1 receptor antagonist, also recovered the suppression and the mal-localization of AMPKα, which were induced by Ang II. PD98059, a mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) kinase (MEK) inhibitor, also restored the AMPKα (Thr172) phosphorylation suppressed by Ang II.

conclusionWe suggest that Ang II induces the relocation and suppression of podocyte AMPKα via Ang II type 1 receptor and MAPK signaling pathway, which would be an important mechanism in Ang II-induced podocyte injury.

Indexed as

AMP-Activated Protein KinasesAngiotensin IIAngiotensin II Type 1 Receptor BlockersAnimalsBlotting, WesternCell LineDose-Response Relationship, DrugEnzyme ActivationEnzyme ActivatorsMAP Kinase Signaling SystemMiceMicroscopy, ConfocalMitogen-Activated Protein Kinase KinasesPhosphorylationPodocytesProtein Kinase InhibitorsAMP-Activated Protein KinasesAngiotensin IIAngiotensin II Type 1 Receptor BlockersEnzyme ActivatorsMitogen-Activated Protein Kinase KinasesProtein Kinase InhibitorsReceptor, Angiotensin, Type 1

Identifiers

PMID22714800
OpenAlexW2052747243

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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.