Cited by 10,041Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismCardiovascular Disease and Adiposity

Obesity is associated with macrophage accumulation in adipose tissue

Open access
Weisberg, Stuart P., McCann, Daniel, Desai, Manisha, Rosenbaum, Michael, Leibel, Rudolph L., Ferrante, Anthony W.·2003·Journal of Clinical Investigation

Abstract

Obesity alters adipose tissue metabolic and endocrine function and leads to an increased release of fatty acids, hormones, and proinflammatory molecules that contribute to obesity associated complications.To further characterize the changes that occur in adipose tissue with increasing adiposity, we profiled transcript expression in perigonadal adipose tissue from groups of mice in which adiposity varied due to sex, diet, and the obesity-related mutations agouti (A y ) and obese (Lep ob ).We found that the expression of 1,304 transcripts correlated significantly with body mass.Of the 100 most significantly correlated genes, 30% encoded proteins that are characteristic of macrophages and are positively correlated with body mass.Immunohistochemical analysis of perigonadal, perirenal, mesenteric, and subcutaneous adipose tissue revealed that the percentage of cells expressing the macrophage marker F4/80 (F4/80 + ) was significantly and positively correlated with both adipocyte size and body mass.Similar relationships were found in human subcutaneous adipose tissue stained for the macrophage antigen CD68.Bone marrow transplant studies and quantitation of macrophage number in adipose tissue from macrophage-deficient (Csf1 op/op ) mice suggest that these F4/80 + cells are CSF-1 dependent, bone marrow-derived adipose tissue macrophages.Expression analysis of macrophage and nonmacrophage cell populations isolated from adipose tissue demonstrates that adipose tissue macrophages are responsible for almost all adipose tissue TNF-α expression and significant amounts of iNOS and IL-6 expression.Adipose tissue macrophage numbers increase in obesity and participate in inflammatory pathways that are activated in adipose tissues of obese individuals.

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Crossref · 10.1172/jci200319246

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  • Aging is associated with macrophage infiltration into primarily visceral adipose depots which drives a pro-inflammatory state and further increases adipose dysfunction.

    “Aging is also associated with macrophage infiltration into primarily visceral adipose depots which drives a pro-inflammatory state and further increases adipose dysfunction (40).”

    From Metabolic impact of endogenously produced estrogens by adipose tissue in females and males across the lifespan (2025) · cites this paper as [40]

    The Discussion (pp. 10–11) links macrophage accumulation to adiposity and suggests it may increase inflammatory-molecule production and affect adipose function. It does not establish an association with aging; it examines both visceral and subcutaneous depots rather than showing infiltration occurs primarily in visceral fat. The claim also states the proposed effects more definitively than the paper does. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Metabolic syndrome is associated with significant macrophage accumulation in adipose tissue.

    “As metabolic syndrome is associated with significant macrophage accumulation in adipose tissue,69”

    From Cystatin C is glucocorticoid responsive, directs recruitment of Trem2+ macrophages, and predicts failure of cancer immunotherapy (2023) · cites this paper as [69]

    The Discussion (p. 10) reports that adipose-tissue macrophage accumulation increases with measures of adiposity in mice and humans. The paper establishes this association for obesity, but the cited passages do not establish it for metabolic syndrome as a distinct condition. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Activated monocytes that give rise to M1 and M2 macrophages produce more inflammatory compounds that probably appear in the circulation.

    “Activated monocytes that give rise to M1 and M2 macrophages produce even more inflammatory compounds that probably appear in the circulation57.”
  • In adipose tissue from lean subjects, approximately 10% of cells stained positive for macrophages, but in obese subjects, this number increased to up to 50%.

    “In adipose tissue from lean subjects, approximately 10% of cells stained positive for macrophages, but in obese subjects, this number increased to up to 50% [38].”
  • More than 40% of total adipose tissue cell content from obese rodents and humans is comprised of macrophages, compared with approximately 10% in lean counterparts.

    “In fact, more than 40% of the total adipose tissue cell content from obese rodents and humans was comprised of macrophages compared with approximately 10% in lean counterparts (101).”

    From Insulin sensitivity: Modulation by nutrients and inflammation (2008) · cites this paper as [101]

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Research works printed but not linked: 1

  1. Snedecor, G.W., and Cochran, W.G. 1967. Statistical methods. Iowa State University Press. Ames, Iowa, USA. 172-198.

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Authors
Weisberg, S. P., McCann, D., Desai, M., Rosenbaum, M., Leibel, R. L., & Ferrante, A. W.
Affiliations
  • Columbia University Irving Medical Center (US)
  • Columbia University (US)
Corresponding author
Ferrante, Anthony W.
Venue
Journal of Clinical Investigation
Published
2003-12-15
Volume
112
Issue
12
Pages
1796-1808
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2008869160
Cited by
10,041
References
99
Citations by year
2026: 265 · 2025: 337 · 2024: 420 · 2023: 373 · 2022: 460 · 2021: 504 · 2020: 524 · 2019: 494 · 2018: 536 · 2017: 537 · 2016: 530 · 2015: 558 · 2014: 575 · 2013: 683 · 2012: 554
FWCI
130.23
Type
journal article
Language
en
Open access
Licence
public-domain
Locations
  • Journal of Clinical Investigation (publishedVersion, public-domain)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Russell Berrie Foundation
  • National Institutes of Health (K08 DK)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK064773, R01DK052431, K08DK059960, R01DK066525)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
Keywords
obesity, adipose tissue macrophages, macrophage accumulation, perigonadal adipose tissue, F4/80, CD68, bone marrow-derived macrophages, adipose tissue inflammation, TNF-α, inducible nitric oxide synthase, interleukin-6, adipocyte size, body mass, subcutaneous adipose tissue
MeSH terms
CD68 Molecule, Adipose Tissue, Animals, Body Weight, Cell Separation, Female, Flow Cytometry, Humans, Immunohistochemistry, Liver, Macrophages, Male, Mice, Inbred C57BL, Obesity, RNA, Messenger, Time Factors, Tumor Necrosis Factor-alpha, Antigens, Differentiation, Myelomonocytic, Antigens, CD, Interleukin-6, Immunophenotyping, Leukocyte Common Antigens, Nitric Oxide Synthase, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Mice, Nitric Oxide Synthase Type II

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