Evidence map›Paper›PMID 18974052›Full record

ArticleThe Journal of biological chemistry2008

Opposite regulation of cholesterol levels by the phosphatase and hydrolase domains of soluble epoxide hydrolase.

Ahmed E EnayetAllah, Ayala Luria, Beibei Luo, Hsing-Ju Tsai, Priyanka Sura, Bruce D Hammock, David F Grant

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

27 citing papers in PubMed, 63 citations in OpenAlex.

  1. Article
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  7. Article
  8. Soluble Epoxide Hydrolase and Brain Cholesterol Metabolism.Frontiers in molecular neuroscience · 2019
    Review
  9. Estrogen-dependent epigenetic regulation of soluble epoxide hydrolase via DNA methylation.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  10. Review
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  14. Review
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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.

Ahmed E EnayetAllahDepartment of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut 06269-3092, USA.
Ayala Luria
Beibei Luo
Hsing-Ju Tsai
Priyanka Sura
Bruce D Hammock
David F Grant
University of California, Davis · USUniversity of Connecticut · US

Funding

Workshop on Environmental Technology Transfer and EntrepreneurshipP42ES004699 · NIEHS · UNIVERSITY OF CALIFORNIA DAVIS · PI HAMMOCK, BRUCE D · 1987 to 2021
$50.1M
HYDROLYTIC ENZYMES IN THE METABOLISM OF TOXINSR37ES002710 · NIEHS · UNIVERSITY OF CALIFORNIA DAVIS · PI HAMMOCK, BRUCE D · 1998 to 2007
$3.0M
Soluble Epoxide Hydrolase PolymorphismsR01ES011630 · NIEHS · UNIVERSITY OF CONNECTICUT STORRS · PI GRANT, DAVID FRANKLIN · 2003 to 2007
$1.4M
NIEHS NIH HHS ES011630NIEHS NIH HHS P42 ES004699NIEHS NIH HHS R01 ES011630NIEHS NIH HHS R37 ES002710
6 · The paper itself

Abstract

Soluble epoxide hydrolase (sEH) is a bifunctional enzyme with two catalytic domains: a C-terminal epoxide hydrolase domain and an N-terminal phosphatase domain. Epidemiology and animal studies have attributed a variety of cardiovascular and anti-inflammatory effects to the C-terminal epoxide hydrolase domain. The recent association of sEH with cholesterol-related disorders, peroxisome proliferator-activated receptor activity, and the isoprenoid/cholesterol biosynthesis pathway additionally suggest a role of sEH in regulating cholesterol metabolism. Here we used sEH knock-out (sEH-KO) mice and transfected HepG2 cells to evaluate the phosphatase and hydrolase domains in regulating cholesterol levels. In sEH-KO male mice we found a approximately 25% decrease in plasma total cholesterol as compared with wild type (sEH-WT) male mice. Consistent with plasma cholesterol levels, liver expression of HMG-CoA reductase was found to be approximately 2-fold lower in sEH-KO male mice. Additionally, HepG2 cells stably expressing human sEH with phosphatase only or hydrolase only activity demonstrate independent and opposite roles of the two sEH domains. Whereas the phosphatase domain elevated cholesterol levels, the hydrolase domain lowered cholesterol levels. Hydrolase inhibitor treatment in sEH-WT male and female mice as well as HepG2 cells expressing human sEH resulted in higher cholesterol levels, thus mimicking the effect of expressing the phosphatase domain in HepG2 cells. In conclusion, we show that sEH regulates cholesterol levels in vivo and in vitro, and we propose the phosphatase domain as a potential therapeutic target in hypercholesterolemia-related disorders.

Indexed as

Gene Expression Regulation, EnzymologicAnimalsCell LineCholesterolEpoxide HydrolasesFemaleGene ExpressionHumansLiverMaleMiceMice, Inbred C57BLMice, KnockoutPhosphoric Monoester HydrolasesProtein Structure, TertiaryCholesterolEpoxide HydrolasesPhosphoric Monoester Hydrolases

Identifiers

PMID18974052
PMCPMC2605982
OpenAlexW2090072665

What OpenQuestion holds

Textmetadata
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.