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https://dx.doi.org/10.25673/13...
Doctoral thesis . 2018
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Expressionsregulation der organischen Anionentransporter OAT1 und OAT3 im Ischämie-Reperfusions-Modell

Authors: Braun, Christina;

Expressionsregulation der organischen Anionentransporter OAT1 und OAT3 im Ischämie-Reperfusions-Modell

Abstract

Kürzlich konnten wir zeigen, dass die Abschwächung der Expression von rOAT1 und rOAT3 nach einer akuten ischämischen Nierenschädigung (AKI) durch COX-Metabolie mediiert wird und die Suppression somit entscheidend in die renale Schädigung involviert sein könnte. Die basolaterale Aufnahme der organischen Anionen in renale Tubuluszellen nach modellhafter Ischämie-Reperfusion wurde anhand eines Fluorescein-Aufnahme-Versuches untersucht. Wir fanden Evidenz dafür, dass die Ischämie-Reperfusions-induzierte Herunterregulation des Transports organischer Anionen durch COX1-Metaboliten über den Prostaglaindin-E4-Rezeptor mediiert wird. Des Weiteren wurde der Signalweg für die Transkriptionsaktivität im etablierten Reporter-Gen-Assay verifiziert. Die beschriebenen Mechanismen nach Ischämie-Reperfusion könnten auch für die Übertragung auf den Menschen von Bedeutung sein.

Recently, we gained evidence that impairment of rOat1 and rOat3 expression induced by ischemic acute kidney injury (AKI) is mediated by COX metabolites and this suppression might be critically involved in renal damage. Basolateral organic anion uptake into proximal tubular cells after model ischemia and reperfusion (I/R) was investigated by fluorescein uptake. We gained evidence that I/R induced down regulation of organic anion transport is mediated by COX1 metabolites via E prostanoid receptor type 4. In brief, the latter signaling was verified for the transcriptional activity in the reporter gen assay established. As the promoter sequences cloned were of human origin and expressed in a human renal epithelial cell line we (c) hypothesize that the regulatory mechanisms described after I/R is meaningful for humans as well.

Country
Germany
Keywords

HEK-Zellen, ddc:610, Translation, HEK cells, Reporter-Gen-Assay, OK-Zellen, Regulation of expression, Transport experiments, 610, OK cells, OK-Zellen; HEK-Zellen; Ischämie-Reperfusions-Modell; Expressionsregulation; OAT1; OAT3; Transportexperimente; Reporter-Gen-Assay; Klonen von putativen humanen Promotorsequenzen; Translation, Klonen von putativen humanen Promotorsequenzen, OAT3, Expressionsregulation, OAT1, OK cells; HEK cells; Ischemic acute kidney injury model; Regulation of expression; OAT1; OAT3; Transport experiments; Reporter gen assay; Cloning of putative human promotor sequence; Translation, Reporter gen assay, Transportexperimente, Ischemic acute kidney injury model, Cloning of putative human promotor sequence, Ischämie-Reperfusions-Modell

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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