Evidence map›Paper›PMID 29544483›Full record

Trial reportLipids in health and disease2018

N-3 polyunsaturated fatty acids improve lipoprotein particle size and concentration in Japanese patients with type 2 diabetes and hypertriglyceridemia: a pilot study.

Kana Ide, Masaya Koshizaka, Hirotake Tokuyama, Takahiko Tokuyama, Takahiro Ishikawa, Yoshiro Maezawa, Minoru Takemoto, Koutaro Yokote

Open access · goldFull text readClinical Trial
In one paragraph

Trial report in Lipids in health and disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 6% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Review
  6. Article
  7. Review
  8. Article
  9. Omega 3 rich diet modulates energy metabolism via GPR120-Nrf2 crosstalk in a novel antioxidant mouse model.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2019
    Article
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

8 authors at 2 institutions in 1 country.

Kana IdeClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Masaya KoshizakaClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan. overslope@chiba-u.jp.ORCID http://orcid.org/0000-0001-7374-9993
Hirotake TokuyamaClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Takahiko TokuyamaTokuyama Clinic, Chiba, Japan.
Takahiro IshikawaClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Yoshiro MaezawaClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Minoru TakemotoClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Koutaro YokoteClinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Chiba University · JPTokuyama (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with type 2 diabetes are at high risk for cardiovascular disease. Although hydroxymethylglutaryl-CoA reductase inhibitors (statins) can reduce cardiovascular events, residual risk remains even after target low-density lipoprotein cholesterol (LDL-C) levels have been achieved. Lipoprotein particle size and fraction changes are thought to contribute to such risks. The purpose of this study was to evaluate the effects of n-3 polyunsaturated fatty acids (n-3 PUFAs), predominantly eicosapentaenoic acid and docosahexaenoic acid, on lipoprotein particle size, concentration, and glycemic control in Japanese patients with type 2 diabetes and hypertriglyceridemia.

methodsThis was a multicenter, prospective, open-label, single arm study. We enrolled 14 patients with type 2 diabetes and hypertriglyceridemia treated with statins and dipeptidyl peptidase-4 inhibitors with glycated hemoglobin (HbA1c) < 8.0%, LDL-C < 120 mg/dL, and fasting triglyceride ≥150 mg/dL. After a 12-week observation period, they were treated with 4 g/day n-3 PUFAs for 12 weeks. Lipoprotein particle sizes, concentrations, lipoprotein insulin resistance (LPIR) scores, lipid profiles, HbA1c, and fasting plasma glucose (FPG) were measured before and after treatment. Lipoprotein profiles were measured by nuclear magnetic resonance spectroscopy. Data were analyzed using Wilcoxon signed-rank tests.

resultsConcentrations of total cholesterol (P < 0.001), LDL-C (P = 0.003), and triglyceride (P < 0.001) decreased following n-3 PUFA administration. N-3 PUFAs decreased the size of very low-density lipoprotein (VLDL; P < 0.001) particles, but did not affect LDL or high-density lipoprotein (HDL) particles. The concentration of large LDL increased, whereas small LDL decreased, causing the large to small LDL ratio to increase significantly (P = 0.042). Large VLDL and chylomicron concentrations significantly decreased, as did the large to small VLDL ratio (all P < 0.001). FPG levels unchanged, whereas HbA1c levels slightly increased. LPIR scores improved significantly (P = 0.001).

conclusionsN-3 PUFAs partly improved atherogenic lipoprotein particle size and concentration, and produced less atherogenic lipoprotein subclass ratios in patients that achieved target LDL-C levels and glycemic control. These results suggest that n-3 PUFAs may reduce residual cardiovascular risk factors in statin-treated patients with type 2 diabetes and hypertriglyceridemia.

trial registrationThe study was registered at UMIN-ID: UMIN000013776 .

Indexed as

AdultAgedAged, 80 and overCardiovascular DiseasesCholesterol, LDLDiabetes Mellitus, Type 2Docosahexaenoic AcidsEicosapentaenoic AcidFatty Acids, Omega-3FemaleGlycated HemoglobinHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHypertriglyceridemiaJapanLipoproteinsCholesterol, LDLDocosahexaenoic AcidsEicosapentaenoic AcidFatty Acids, Omega-3Glycated Hemoglobinhemoglobin A1c protein, humanHydroxymethylglutaryl-CoA Reductase InhibitorsLipoproteinsTriglyceridesCardiovascular riskDipeptidyl peptidase-4 inhibitorHydroxymethylglutaryl-CoA reductase inhibitorHypertriglyceridemiaLipoproteinLow-density lipoprotein cholesterol sizeN-3 polyunsaturated fatty acidsSmall dense low-density lipoprotein cholesterolType 2 diabetes

Identifiers

PMID29544483
PMCPMC5855932
OpenAlexW2803872177

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LicenceCC BY
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Registered trials

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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.