Level D· Scientific groundwork from lab and animal studiesLaboratory StudyEurope PMCOpen access

Circulating classical monocytes are associated with CD11c + macrophages in human visceral adipose tissue

Wouters K., Gaens K., Bijnen M., Verboven K., Jocken J., Wetzels S.

Laboratory Study, published in Sci Rep (2017) — summary generated from the PubMed abstract.

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Level D· Scientific groundwork from lab and animal studiesEvidence level of this study

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

  • Level A · Stronger Clinical Evidence
  • Level B · Emerging clinical evidence with positive signals
  • Level C · Early human research exploring benefits
  • Level D · Scientific groundwork from lab and animal studies
  • Emerging · Emerging topic under active research
Read the A–D evidence level guide

This page is generated from the PubMed record. The Thai description is an automated summary of bibliographic fields and the abstract, not a full translation, and is not medical advice.

Study type
Laboratory Study
Journal
Sci Rep (2017)
Reported sample size
—
Source database
Europe PMC
PMID
28198418
PMCID
PMC5309742
DOI
10.1038/srep42665
Citations
65

Abstract (original English)

Immune cell accumulation in adipose tissue (AT) is associated with the development of AT inflammation, resulting in metabolic dysfunction. Circulating immune cell patterns may reflect immune cell accumulation in expanding AT. However, data linking human leukocytes in blood and AT is lacking. We investigated whether blood immune cell populations are associated with their counterparts in subcutaneous (scAT) or visceral AT (vAT). Flow cytometry was performed on blood, scAT and vAT from 16 lean and 29 obese men. Circulating natural killer (NK)-cells, classical monocytes and nonclassical monocytes were higher in obese individuals. vAT, but not scAT, of obese individuals contained more inflammatory CD11c + "M1" macrophages and NK cells compared to lean individuals. Blood classical monocytes were associated with CD11c + macrophages in vAT but not scAT. This association was unrelated to expression of the adhesion molecules CD11b and CD11c or of the chemokine receptor CX3CR1 on these monocytes. Other AT immune cells were not associated with their respective counterparts in blood. Finally, CD11c + macrophages and CD4 + T-cells in vAT were associated with their counterparts in scAT. In conclusion, blood classical monocytes reflect CD11c + macrophages in vAT.

What this study does not prove

  • • This study does not prove SVF is an approved treatment or a replacement for standard care.
  • • This is preclinical work; animal or laboratory results cannot be applied to humans.

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

How we grade evidence
MonocytesMacrophagesHumansObesityIntegrinsLeukocyte CountCase-Control StudiesImmunophenotypingMiddle AgedMale

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