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Related Concept Videos

Nociception01:44

Nociception

Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
Inflammatory Response01:28

Inflammatory Response

An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Acute Inflammation III: Local and Systemic Effects01:25

Acute Inflammation III: Local and Systemic Effects

Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Acute Inflammation II: Cellular Phase01:26

Acute Inflammation II: Cellular Phase

The cellular phase of acute inflammation is a tightly orchestrated sequence of events that recruits leukocytes, primarily neutrophils, to sites of tissue injury or infection. Following the initial vascular changes, this phase ensures effective immune cell migration, activation, and function at the affected site to eliminate pathogens and initiate tissue repair.Leukocyte Recruitment CascadeLeukocyte recruitment happens in four steps: margination, adhesion, transmigration, and chemotaxis. Reduced...

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Related Experiment Video

Updated: Jul 16, 2026

Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses
06:43

Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses

Published on: March 29, 2017

Inflammatory Signal Persistence in Pain: Lymphatic Regulation and Neuroimmune Integration.

Eleonora Solari1, Cristiana Marcozzi1, Vittorio Vellani2

  • 1Department of Medicine and Technological Innovation, University of Insubria, I-21100 Varese, Italy.

Biology
|July 15, 2026
PubMed
Summary

Lymphatic vessels actively clear inflammatory signals, influencing pain resolution. This review highlights their dynamic role in tissue homeostasis and immune signaling, offering new insights into inflammatory pain mechanisms.

Keywords:
CGRPinflammatory painlymphangiogenesislymphatic barrierlymphatic contractilityneuroimmune integrationsubstance P

Related Experiment Videos

Last Updated: Jul 16, 2026

Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses
06:43

Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses

Published on: March 29, 2017

Area of Science:

  • Immunology
  • Physiology
  • Pain Research

Background:

  • Inflammatory pain involves nociception and immune signaling, with mediator production extensively studied.
  • Mechanisms for inflammatory mediator clearance and redistribution remain less understood.
  • The lymphatic system is traditionally viewed as a passive conduit but is emerging as a key regulator.

Purpose of the Study:

  • To review the active role of lymphatic vessels in regulating inflammatory signal persistence.
  • To explore how lymphatic function integrates neural activation and immune resolution.
  • To provide a framework for understanding lymphatic physiology in inflammatory pain.

Main Methods:

  • Review of existing literature on lymphatic vessel function in inflammation.
  • Analysis of the influence of neuropeptides (CGRP, SP) on lymphatic dynamics.
  • Examination of endogenous opioid and anesthetic effects on lymphatic function.

Main Results:

  • Lymphatic vessels actively regulate inflammatory signal persistence via barrier function, remodeling, and contractility.
  • Neuropeptides like CGRP and SP modulate lymphatic permeability, lymphangiogenesis, and propulsion.
  • Lymphatic function is influenced by opioid signaling and anesthetic agents, affecting muscle and endothelial cells.

Conclusions:

  • Lymphatic physiology acts as a regulatory interface between neural activation and immune resolution.
  • Understanding the lymphatic system's dynamic role refines concepts of inflammatory pain.
  • This perspective provides a basis for future translational research in pain management.