Evidence map›Paper›PMID 34031539›Full record

ArticleLaboratory investigation; a journal of technical methods and pathology2021

Advanced oxidation protein products downregulate CYP1A2 and CYP3A4 expression and activity via the NF-κB-mediated signaling pathway in vitro and in vivo.

Tianrong Xun, Zhufen Lin, Xiaokang Wang, Xia Zhan, Haixing Feng, Danna Gan, Xixiao Yang

Open access · hybridAbstract read
In one paragraph

Article in Laboratory investigation; a journal of technical methods and pathology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

14 citing papers in PubMed, 19 citations in OpenAlex.

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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 at 2 institutions in 1 country.

Tianrong Xun *Department of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Zhufen Lin *Department of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Xiaokang WangDepartment of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Xia ZhanDepartment of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Haixing FengDepartment of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Danna GanDepartment of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Xixiao YangDepartment of Pharmacy, Shenzhen Hospital, Southern Medical University, Shenzhen, China. yaxx@smu.edu.cn.
Southern Medical University Shenzhen Hospital · CNSouthern Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Uremic toxin accumulation is one possible reason for alterations in hepatic drug metabolism in patients with chronic kidney disease (CKD). However, the types of uremic toxins and underlying mechanisms are poorly understood. In this study, we report the role of advanced oxidation protein products (AOPPs), a modified protein uremic toxin, in the downregulation of cytochromes P450 1A2 (CYP1A2) and P450 3A4 (CYP3A4) expression levels and activities. We found that AOPP accumulation in plasma in a rat CKD model was associated with decreased protein levels of CYP1A2 and CYP3A4. CYP1A2 and CYP3A4 metabolites (acetaminophen and 6β-hydroxytestosterone, respectively,) in liver microsomes were also significantly decreased. In human hepatocytes, AOPPs significantly decreased CYP1A2 and CYP3A4 protein levels in a dose- and time-dependent manner and downregulated their activities; however, bovine serum albumin (BSA), a synthetic precursor of AOPPs, had no effect on these parameters. The effect of AOPPs was associated with upregulation of p-IKKα/β, p-IκBα, p-NF-κB, and inflammatory cytokines protein levels and increases in p-IKKα/β/IKKα, p-IκBα/IκBα, and p-NF-κB/NF-κB phosphorylation ratios. Further, NF-kB pathway inhibitors BAY-117082 and PDTC abolished the downregulatory effects of AOPPs. These findings suggest that AOPPs downregulate CYP1A2 and CYP3A4 expression and activities by increasing inflammatory cytokine production and stimulating NF-κB-mediated signaling. Protein uremic toxins, such as AOPPs, may modify the nonrenal clearance of drugs in patients with CKD by influencing metabolic enzymes.

Indexed as

Advanced Oxidation Protein ProductsAnimalsCell LineCytochrome P-450 CYP1A2Cytochrome P-450 CYP3ADisease Models, AnimalDown-RegulationHep G2 CellsHumansMaleMicrosomes, LiverNF-kappa BRatsRats, Sprague-DawleyRenal Insufficiency, ChronicSignal TransductionAdvanced Oxidation Protein ProductsCYP1A2 protein, humanCyp1a2 protein, ratCyp3a2 protein, ratCYP3A4 protein, humanCytochrome P-450 CYP1A2Cytochrome P-450 CYP3ANF-kappa B

Identifiers

PMID34031539
PMCPMC8367815
OpenAlexW3164738906

What OpenQuestion holds

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LicenceCC BY
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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.