Evidence map›Paper›PMID 32982345›Full record

ArticleDiabetes, metabolic syndrome and obesity : targets and therapy2020

Lycopene Improves the Metformin Effects on Glycemic Control and Decreases Biomarkers of Glycoxidative Stress in Diabetic Rats.

Ingrid Delbone Figueiredo, Tayra Ferreira Oliveira Lima, Maiara Destro Inácio, Mariana Campos Costa, Renata Pires Assis, Iguatemy Lourenço Brunetti, Amanda Martins Baviera

Open access · goldAbstract read
In one paragraph

Article in Diabetes, metabolic syndrome and obesity : targets and therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.4field-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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

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  3. Hepatoprotective Effects of Gac (Journal of experimental pharmacology · 2025
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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.

Ingrid Delbone FigueiredoDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0003-1558-2894
Tayra Ferreira Oliveira LimaDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0003-1408-2724
Maiara Destro InácioDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0002-7968-0269
Mariana Campos CostaDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0002-4632-8082
Renata Pires AssisDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0003-1070-9569
Iguatemy Lourenço BrunettiDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0003-4927-7599
Amanda Martins BavieraDepartment of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.ORCID 0000-0003-0987-5295
Universidade Estadual Paulista (Unesp) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionOxidative stress and exacerbated generation of advanced glycation end products (AGEs) participate in the onset of diabetic complications. Lycopene is a potent antioxidant; evidence accounts for its ability to mitigate diabetic disturbances, including the deleterious events of advanced glycation. Therefore, this carotenoid has emerged as a candidate to be used in combination with antidiabetic drugs, such as metformin, attempting to counteract the glycoxidative stress. This study investigated the effects of the treatments with lycopene or metformin, alone or in combination, on glycoxidative stress biomarkers and antioxidant defenses in diabetic rats.

methodsStreptozotocin-induced diabetic rats were treated for 35 days with lycopene (45 mg/kg) or metformin (250 mg/kg), alone or as mixtures in yoghurt. Plasma levels of glucose, triglycerides, cholesterol, thiobarbituric acid reactive substances and protein carbonyl groups (biomarkers of oxidative damage), fluorescent AGEs (biomarkers of advanced glycation), and paraoxonase 1 activity (antioxidant enzyme) were assessed. Changes in the hepatic and renal levels of glycoxidative damage biomarkers and the activities of antioxidant enzymes were investigated.

resultsThe combination of lycopene with metformin maintained the beneficial effects of the isolated treatments, improving the glucose tolerance and lipid profile, lessening biomarkers of oxidative damage, and increasing the paraoxonase 1 activity. Besides, the combined therapy caused further decreases in postprandial glycemia, plasma levels of cholesterol and AGEs, avoided lipid peroxidation (plasma, kidney), and increased antioxidant defenses, mainly the activity of superoxide dismutase (liver, kidney), indicating the maintenance of the lycopene effects.

conclusionLycopene combined with metformin may act synergistically in the control of postprandial glycemia, dyslipidemia and glycoxidative stress, as well as increased antioxidant defenses, arising as a promising therapeutic strategy to mitigate diabetic complications.

Indexed as

combined therapydiabetes mellitusglycoxidative stresslycopeneparaoxonase

Identifiers

PMID32982345
PMCPMC7495351
OpenAlexW3083551816

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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.