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Related Concept Videos

Functions of the Lymphatic and Immune System01:28

Functions of the Lymphatic and Immune System

The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
Detailed Structure and Function of Lymph Nodes01:23

Detailed Structure and Function of Lymph Nodes

Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
Lymphoid Cells and Tissues01:18

Lymphoid Cells and Tissues

Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
Introduction to Lymphatic and Immune System01:23

Introduction to Lymphatic and Immune System

Immunity is a crucial biological concept about our body's inherent capacity to prevent infections and diseases. A complex network of cells and tissues collectively known as the immune system facilitates this natural defense mechanism. The immune system plays an integral role in maintaining our health and well-being, shielding us from potential health threats.
The immune responses can be categorized into two types: innate and adaptive. Innate immunity comprises nonspecific defenses we are born...
Development of the Lymphatic System01:15

Development of the Lymphatic System

The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...

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Related Experiment Video

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Isolation of Murine Lymph Node Stromal Cells
05:47

Isolation of Murine Lymph Node Stromal Cells

Published on: August 19, 2014

Lymph node vascular-stromal growth and function as a potential target for controlling immunity.

Fairouz Benahmed1, Scott Ely, Theresa T Lu

  • 1Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, NY 10021, USA. BenahmedF@hss.edu

Clinical Immunology (Orlando, Fla.)
|June 22, 2012
PubMed
Summary

Enlarged lymph nodes in autoimmune diseases show increased vascularity. Understanding lymph node blood vessel growth offers potential therapeutic targets for modulating immune responses in these conditions.

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Area of Science:

  • Immunology
  • Vascular Biology
  • Pathology

Background:

  • Lymphadenopathy, characterized by enlarged lymph nodes, is common in autoimmune and inflammatory diseases.
  • Vascular proliferation is a frequent observation within these enlarged lymph nodes.
  • Lymph node vasculature is crucial for immune cell trafficking and nutrient supply, presenting a potential therapeutic target.

Purpose of the Study:

  • To review recent advancements in understanding the vascular and stromal compartment of immune-stimulated lymph nodes.
  • To explore the potential of targeting lymph node vasculature for therapeutic interventions in autoimmune diseases.

Main Methods:

  • This is a review article, synthesizing existing research.
  • Focuses on insights into the growth and function of lymph node vasculature and stromal cells.
  • Discusses the implications for autoimmune disease pathology and treatment.

Main Results:

  • Immune stimulation leads to significant changes in lymph node vascular and stromal compartments.
  • The vascular network's role in immune cell delivery and support is critical.
  • Alterations in this compartment are implicated in the progression of autoimmune conditions.

Conclusions:

  • Targeting lymph node vascular proliferation and function presents a promising therapeutic strategy for autoimmune diseases.
  • Further research into the intricate interplay between vasculature, stroma, and immune cells is warranted.
  • Modulating the lymph node microenvironment could offer novel treatment avenues.