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Related Concept Videos

Loose Connective Tissue01:26

Loose Connective Tissue

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Loose connective tissue is found between many organs. Its main function is to absorb shock and bind tissues together. It also allows water, salts, and various nutrients to diffuse into cells that are embedded in it or present in adjacent tissues.
Adipose Tissue
Adipose tissue consists primarily of fat storage cells called adipocytes and little extracellular matrix. A large number of capillaries present within adipose tissue allow rapid mobilization of lipid molecules. White adipose tissue is...
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Hypodermis01:02

Hypodermis

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The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous tissue) of the bones and muscles. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for...
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Functions of Connective Tissues01:17

Functions of Connective Tissues

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Connective tissues perform a broad range of functions in the body. Their primary function is to connect and link different tissues in the body and act as packaging material between tissues. The areolar tissue, a connective tissue prototype, commonly cements various tissue types in diverse body organs. In contrast, adipose tissue cushions internal organs while insulating the body from heat loss.
Hard connective tissues, such as bones and cartilage, provide structure and support to the body.
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Related Experiment Video

Updated: Feb 28, 2026

Identification and Dissection of Diverse Mouse Adipose Depots
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Adipose-Tissue Macrophage Diversity and Functions.

Sacha Grenet1, Stoyan Ivanov1, Giulia Chinetti1,2

  • 1Faculté de Médecine, Université Côte d'Azur, CNRS, LP2M, 28, Avenue de Valombrose, 06107 Nice, Cedex 2, France.

International Journal of Molecular Sciences
|February 27, 2026
PubMed
Summary

White adipose tissue macrophages are diverse immune cells crucial for metabolic regulation. This review highlights their roles, distribution, and the emerging importance of lipid-associated macrophages (LAMs) in obesity.

Keywords:
immune cellsinflammationmacrophagesobesity

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Characterization of Immune Cells in Human Adipose Tissue by Using Flow Cytometry
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Characterization of Immune Cells in Human Adipose Tissue by Using Flow Cytometry

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Area of Science:

  • Immunology
  • Metabolic research
  • Adipose tissue biology

Background:

  • Macrophages are key immune cells in adipose tissue (AT), influencing homeostasis and metabolism.
  • White adipose tissue (WAT) harbors diverse macrophage subsets with distinct membrane markers.
  • These macrophages are integral to local lipid handling and metabolic regulation.

Purpose of the Study:

  • To review the diversity and functions of white adipose tissue macrophages.
  • To summarize current knowledge on macrophage distribution, stromal cell interactions, and generation/survival mechanisms.
  • To emphasize the role of adipose tissue macrophages in lipid metabolism, especially in obesity.

Main Methods:

  • Review of existing literature on adipose tissue macrophages.
  • Analysis of macrophage subsets, markers, and distribution within WAT.
  • Discussion of mechanisms governing macrophage generation, survival, and function.

Main Results:

  • Multiple macrophage subsets coexist in WAT, each with specific membrane markers.
  • Adipose tissue macrophages play a central role in managing local lipid levels.
  • Lipid-associated macrophages (LAMs) are increasingly abundant in adipose tissue during obesity.

Conclusions:

  • Adipose tissue macrophages exhibit significant diversity and functional specialization.
  • Understanding macrophage populations, like LAMs, is critical for metabolic research, particularly in obesity.
  • Further research into adipose tissue macrophage biology can inform therapeutic strategies for metabolic disorders.