Evidence mapPaperPMID 40515448Full record

SynthesisObesity reviews : an official journal of the International Association for the Study of Obesity2025

Increased Circulating Interleukin Concentrations in Type 2 Diabetes: A Systematic Review and Meta-Analysis.

Chang Cao, Jing Yuan, Elizabeth R Gilbert, Mark A Cline, Fan Lam, King C Li, Ryan N Dilger

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Obesity reviews : an official journal of the International Association for the Study of Obesity, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Increased Circulating Interleukin Concentrations in Type 2 Diabetes: A Systematic Review and Meta-Analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2025
    Pooled it
  2. 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

7 authors.

Chang CaoBeckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.ORCID 0000-0002-1908-1045
Jing YuanBeckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.
Elizabeth R GilbertDepartment of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
Mark A ClineSchool of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
Fan LamBeckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.
King C LiBeckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.
Ryan N DilgerBeckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois, USA.

Funding

Beckman Institute for Advanced Science and Technology at University of Illinois Urbana-ChampaignBeckman Institute for Advanced Science and Technology, University of Illinois, Urbana-Champaign
6 · The paper itself

Abstract

objectivesThis work aimed to quantitatively evaluate circulating interleukin concentration data available for patients with Type 2 diabetes.

methodsWe performed a systematic review using PubMed, Web of Science, and the Cochrane Library. Original studies reporting data on circulating interleukin concentrations in at least one group of patients with Type 2 diabetes (obese Type 2 diabetes [OBD], overweight Type 2 diabetes [OWD], or lean Type 2 diabetes [LD]) and healthy weight controls (HWCs) were included. Data were extracted from 43 included studies uniquely encompassing 2646 patients with Type 2 diabetes and 6605 HWCs by independent investigators. We used a random-effects model to pool data in the Comprehensive Meta-Analysis Version 2 software. Effect sizes (ESs) were calculated as the standardized mean difference in interleukin concentrations between groups and then transformed into Hedge's g statistic.

resultsOur results revealed higher circulating concentrations in patients with Type 2 diabetes compared with HWCs, including IL-4, IL-6, IL-17, and IL-18. When stratified by BMI subgroups, all patients with Type 2 diabetes displayed elevated IL-6 concentrations compared with HWCs, with OBD patients having the highest ES, followed by OWD and LD. Similar to the overall results, higher interleukin concentrations in different BMI subgroups of patients with Type 2 diabetes were observed compared with HWCs in IL-4 (OWD), IL-17 (LD), and IL-18 (OBD, but not OWD).

conclusionMeta-analysis outcomes demonstrated higher circulating concentrations of IL-4, IL-6, IL-17, and IL-18 in patients with Type 2 diabetes, strengthening the clinical evidence that Type 2 diabetes is accompanied by a systemic inflammatory response.

Indexed as

Diabetes Mellitus, Type 2InterleukinsObesityHumansInterleukinsbody mass indexinflammationinterleukinsmeta‐analysisType 2 diabetes

Identifiers

PMID40515448
PMCPMC12620103

What Socratic holds

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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 Socratic graph.