Evidence map›Paper›PMID 30048968›Full record

ArticleCellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology2018

High Fat Diet Upregulates Fatty Acid Oxidation and Ketogenesis via Intervention of PPAR-γ.

Kunal Sikder, Sanket Kumar Shukla, Neel Patel, Harpreet Singh, Khadija Rafiq

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 73 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 2 pooled it
8.9field-weighted citation impact, top 2% 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

73 citing papers in PubMed, 2 syntheses or guidelines pooled it, 125 citations in OpenAlex.

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13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Kunal SikderCenter for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Sanket Kumar ShuklaCenter for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Neel PatelDepartment of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
Harpreet SinghDepartment of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
Khadija RafiqCenter for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Thomas Jefferson University · USDrexel University · US

Funding

Chloride intracellular channels in cardiac mitochondria and their direct role in cardioprotectionR01HL133050 · NHLBI · OHIO STATE UNIVERSITY · PI SINGH, HARPREET · 2016 to 2020
$2.0M
Inflammatory Proteases and Diabetic CardiomyopathyR01HL111278 · NHLBI · THOMAS JEFFERSON UNIVERSITY · PI RAFIQ, KHADIJA · 2013 to 2017
$1.9M
Vevo 2100 ultrasound scannerS10OD010408 · OD · THOMAS JEFFERSON UNIVERSITY · PI FORSBERG, FLEMMING · 2012 to 2012
$525k
NHLBI NIH HHS R01 HL111278NHLBI NIH HHS R01 HL133050NIH HHS S10 OD010408
6 · The paper itself

Abstract

BACKGROUND/

aimsSystemic hyperlipidemia and intracellular lipid accumulation induced by chronic high fat diet (HFD) leads to enhanced fatty acid oxidation (FAO) and ketogenesis. The present study was aimed to determine whether activation of peroxisome proliferator-activated receptor-γ (PPAR-γ) by surplus free fatty acids (FA) in hyperlipidemic condition, has a positive feedback regulation over FAO and ketogenic enzymes controlling lipotoxicity and cardiac apoptosis.

methods8 weeks old C57BL/6 wild type (WT) or PPAR-γ-/- mice were challenged with 16 weeks 60% HFD to induce obesity mediated type 2 diabetes mellitus (T2DM) and diabetic cardiomyopathy. Treatment course was followed by echocardiographic measurements, glycemic and lipid profiling, immunoblot, qPCR and immunohistochemistry (IHC) analysis of PPAR-γ and following mitochondrial metabolic enzymes 3-hydroxy-3-methylglutaryl-CoA synthase (HMGCS2), mitochondrial β- hydroxy butyrate dehydrogenase (BDH1) and pyruvate dehydrogenase kinase isoform 4 (PDK4). In vivo model was translated in vitro, with neonatal rat cardiomyocytes (NRCM) treated with PPAR-γ agonist/antagonist and PPAR-γ overexpression adenovirus in presence of palmitic acid (PA). Apoptosis was determined in vivo from left ventricular heart by TUNEL assay and immunoblot analysis.

resultsWe found exaggerated circulating ketone bodies production and expressions of the related mitochondrial enzymes HMGCS2, BDH1 and PDK4 in HFD-induced diabetic hearts and in PA-treated NRCM. As a mechanistic approach we found HFD mediated activation of PPAR-γ is associated with the above-mentioned mitochondrial enzymes. HFD-fed PPAR-γ-/-mice display decreased hyperglycemia, hyperlipidemia associated with increased insulin responsiveness as compared to HFD-fed WT mice PPAR-γ-/-HFD mice demonstrated a more robust functional recovery after diabetes induction, as well as significantly reduced myocyte apoptosis and improved cardiac function.

conclusionsPPAR-γ has been described previously to regulate lipid metabolism and adipogenesis. The present study suggests for the first time that increased PPAR-γ expression by HFD is responsible for cardiac dysfunction via upregulation of mitochondrial enzymes HMGCS2, BDH1 and PDK4. Targeting PPAR-γ and its downstream mitochondrial enzymes will provide novel strategies in preventing metabolic and myocardial dysfunction in diabetes mellitus.

Indexed as

AnimalsDiabetes Mellitus, Type 2Diabetic CardiomyopathiesDiet, High-FatFatty AcidsHypertrophy, Left VentricularKetone BodiesMaleMice, Inbred C57BLOxidation-ReductionPPAR gammaVentricular Dysfunction, LeftFatty AcidsKetone BodiesPPAR gammaBDH1High fat dietHMGCS2Ketone bodiesLipotoxicityPDKPPAR-γType 2 diabetes mellitus

Identifiers

PMID30048968
PMCPMC6179152
OpenAlexW2884776261

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.