Evidence map›Paper›PMID 22005339›Full record

Trial reportRedox report : communications in free radical research2011

Metformin restores the correlation between serum-oxidized LDL and leptin levels in type 2 diabetic patients.

Manouchehr Nakhjavani, Afsaneh Morteza, Firuzeh Asgarani, Abnoos Mokhtari, Alireza Esteghamati, Omid Khalilzadeh, Ghazaleh Rahbari

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in Redox report : communications in free radical research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.5field-weighted citation impact, top 45% 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

7 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
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  4. 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 1 institution in 1 country.

Manouchehr NakhjavaniEndocrinology and Metabolism Research Center, Vali-Asr Hospital, Tehran University of Medical Sciences, Tehran, Iran. nakhjavanim@tums.ac.ir
Afsaneh Morteza
Firuzeh Asgarani
Abnoos Mokhtari
Alireza Esteghamati
Omid Khalilzadeh
Ghazaleh Rahbari
Tehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionLeptin has lipid peroxidation properties in healthy individuals. Here we aimed to study the correlation between serum-oxidized low-density lipoprotein (ox-LDL) and leptin levels in patients with type 2 diabetes. We also studied the effect of metformin therapy on the correlation between serum ox-LDL and leptin levels in patients with newly diagnosed diabetes.

methodsWe performed a cross-sectional study on two groups of patients with type 2 diabetes stratified according to (1) patients with newly diagnosed diabetes and (2) patients with long-standing diabetes plus healthy controls. Patients with newly diagnosed diabetes were followed for 3 months after the initiation of metformin therapy.

resultsPatients with type 2 diabetes had a higher serum ox-LDL, ox-LDL/LDL ratio, waist circumference, fasting blood sugars (FBSs), hemoglobin A1C (HbA1C), triglyceride, homeostatic model assessment of insulin resistance (HOMA-IR) and a lower serum leptin levels than controls. Serum ox-LDL, ox-LDL/LDL ratio (0.08 (0.08-0.12) vs. 0.06 (0.05-0.08), P<0.001) and HOMA-IR (3.26±0.23 vs. 2.93±0.32; P<0.01) were decreased when serum leptin levels (15.9±1.6 vs. 21.4±2.5, P<0.01) were increased after 3 months of metformin therapy. This remained significant after multiple adjustments for age, body mass index, FBS, HbA1c, and HOMA-IR. Leptin was significantly correlated with ox-LDL/LDL ratio in controls (r=0.78, P<0.01), and in patients with newly diagnosed diabetes (r=0.4, P<0.05), after metformin therapy. There were not any correlation between leptin and ox-LDL/LDL ratio in patients with long-standing diabetes and patients with newly diagnosed diabetes before treatment. DISCUSSION: Metformin restores the positive correlation between serum ox-LDL and leptin levels in patients with type 2 diabetes.

Indexed as

Cross-Sectional StudiesDiabetes Mellitus, Type 2FemaleHumansLeptinLipoproteins, LDLMaleMetforminMiddle AgedOxidative StressLeptinLipoproteins, LDLMetforminoxidized low density lipoprotein

Identifiers

PMID22005339
PMCPMC6837745
OpenAlexW1991617829

What OpenQuestion holds

Texttitle and abstract
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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.