Evidence map›Paper›PMID 41145476›Full record

Trial reportNutrition & diabetes2025

Does partial replacement of animal protein with plant protein in the diet affect components of metabolic syndrome, adropin levels, and the atherogenic index of plasma? Results from a parallel randomized clinical trial in adults with metabolic syndrome.

Farnaz Shahdadian, Mahsa Rezazadegan, Parisa Rouhani, Awat Feizi, Gholamreza Askari, Zahra Moradmand, Parvane Saneei, Sayyed Morteza Safavi

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Nutrition & diabetes, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Farnaz ShahdadianDepartment of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.ORCID 0000-0003-1146-2369
Mahsa RezazadeganDepartment of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
Parisa RouhaniAdelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, Australia.
Awat FeiziDepartment of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Gholamreza AskariDepartment of Community Nutrition, Nutrition and Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.
Zahra MoradmandDepartment of Community Nutrition, Nutrition and Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran.ORCID 0000-0003-1639-0720
Parvane SaneeiDepartment of Community Nutrition, Nutrition and Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran. saneeip@yahoo.com.ORCID 0000-0002-4605-7833
Sayyed Morteza SafaviDepartment of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran. safavimorteza@yahoo.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFew studies evaluated the effect of different proportions of dietary plant- and animal-based protein on metabolic syndrome (MetS) and its related biomarkers.

objectiveConsidering the effect of various types of dietary sources of protein on metabolic health and inconsistent results, this study sought to examine the impact of partially substituting animal protein with plant protein in the diet on the components of MetS, atherogenic index of plasma, and serum adropin values.

methodsIn this parallel, randomized clinical trial with two arms, 73 participants with MetS were randomly allocated to one of two slightly calorie-restricted intervention diets with different proportions of protein sources, including a plant-based protein diet (70% plant-based protein and 30% animal-based protein) and an animal-based protein diet (30% plant-based protein and 70% animal-based protein) for 10 weeks. All analyses were performed based on both intention-to-treat and per-protocol principles.

resultsMean age in the plant and animal-based protein groups was 44.0 ± 9.8 and 43.9 ± 9.8 years, respectively. Within each group, weight, body mass index, systolic and diastolic blood pressure, and atherogenic index of plasma significantly decreased, and adropin levels significantly increased after the intervention (P < 0.05). However, waist circumference (WC) and triglyceride (TG) levels showed a significant decrease only in the plant protein group, and high-density lipoprotein cholesterol (HDL-c) levels illustrated a significant increase only in the animal protein group (P < 0.05). Between-group differences in both crude and adjusted models did not show any significant changes between the two intervention arms (P > 0.05). However, findings of per-protocol analyses illustrated a significant difference only in mean adropin values in two study arms.

conclusionOur findings revealed that both diets based on plant and animal protein were associated with improved in anthropometric indices, MetS components, atherogenic index of plasma, and elevated serum adropin levels. Nevertheless, no statistically significant difference was identified between the two groups.

Indexed as

Animal Proteins, DietaryAtherosclerosisDietary ProteinsMetabolic SyndromePlant ProteinsPlant Proteins, DietaryAdultBiomarkersBlood PressureBody Mass IndexCaloric RestrictionFemaleHumansIntercellular Signaling Peptides and ProteinsMaleMiddle AgedAnimal Proteins, DietaryBiomarkersDietary ProteinsEnho protein, humanIntercellular Signaling Peptides and ProteinsPeptidesPlant ProteinsPlant Proteins, DietaryTriglycerides

Identifiers

PMID41145476
PMCPMC12559708

What Socratic 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 Socratic graph.