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Related Concept Videos

Development of the Lymphatic System01:15

Development of the Lymphatic System

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Lymphatic Vessels and Lymph Transport01:16

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Blood and lymph are fluid connective tissues. They contain cells, also known as formed elements, circulating in a liquid extracellular matrix, the plasma. The formed elements are derived from hematopoietic stem cells in the bone marrow. Blood and lymph connect all vital parts and carry nutrients, oxygen, and other essential molecules like antibodies.
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Lymphatic and Blood Network Analysis During Obesity.

Rafael S Czepielewski1, Alexandre Gallerand2, Jérôme Gilleron3

  • 1Department of Pathology and Immunology, Washington University School of Medicine.

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Summary

Researchers developed a new method to visualize lymphatic and blood vessels in adipose tissue. This technique aids in understanding lymphatic dysfunction, crucial for preventing obesity and related conditions.

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Area of Science:

  • Vascular biology
  • Adipose tissue research
  • Lymphatic system physiology

Background:

  • Lymphatic vessels and nodes are found within adipose tissue, but their role is unclear.
  • Obesity is linked to impaired lymphatic function and increased vessel permeability.
  • Lymphatic dysfunction can cause obesity, highlighting a critical interplay.

Purpose of the Study:

  • To develop a method for visualizing lymphatic and blood vessels in adipose tissue.
  • To enable detailed analysis of lymphatic networks in healthy and inflamed states.
  • To identify factors contributing to lymphatic dysfunction for potential therapeutic strategies.

Main Methods:

  • Subcutaneous injection of fluorochrome-conjugated lectins to label lymphatic arborization.
  • In vivo labeling for evaluating lymphatic vessel density and function.
  • 3D imaging coupled with staining for blood vessels, adipocytes, and immune cells.

Main Results:

  • A rapid, inexpensive, and efficient method for labeling and analyzing lymphatic and blood vessels was established.
  • The technique allows for high-resolution mapping of subcutaneous adipose tissue.
  • In vivo visualization of lymphatic networks in adipose tissue is now feasible.

Conclusions:

  • This novel method facilitates precise visualization of lymphatic and blood vessels within adipose tissue.
  • Understanding lymphatic vessel behavior in adipose tissue is key to addressing obesity and comorbidities.
  • The technique offers a valuable tool for studying lymphatic dysfunction and developing new therapies.