Systemic Inflammation
Systemic Inflammation - Related Videos
09:52
A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites
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Cited by 15 •
2014
Animal models have proven to be invaluable tools in defining host and pathogen specific mechanisms that contribute to the development of chronic inflammation. Here we describe a mouse model of oral infection with the human pathogen Porphyromonas gingivalis and detail methodologies to assess the progression of inflammation at local and systemic sites.
03:52
Subcutaneous Injection of Bacterial Antigen to Induce Systemic Inflammation in a Murine Model
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2025
This video demonstrates the induction of systemic inflammation in an anesthetized mouse. The injection of mycobacterial antigen-adjuvant depots triggers cytokine release and localized inflammation. Lymphatic vessels open, enabling immune cell entry into lymph nodes and activation of T cells, which release pro-inflammatory cytokines, leading to widespread inflammation.
07:48
Intravenous Endotoxin Challenge in Healthy Humans: An Experimental Platform to Investigate and Modulate Systemic Inflammation
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Cited by 45 •
2016
Intravenous administration of endotoxin reliably elicits dose-dependent physiological and immunological alterations consistent with several pathological states. This reductionist approach permits the investigation, modeling and experimental modification of systemic inflammation and its downstream effects in man.
01:25
Acute Inflammation III: Local and Systemic Effects
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2026
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...
01:38
Inflammation
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2019
Overview In response to tissue injury and infection, mast cells initiate inflammation. Mast cells release chemicals that increase the permeability of adjacent blood capillaries and attract additional immune cells to the wound or site of infection. Neutrophils are phagocytic leukocytes that exit the bloodstream and engulf invading microbes. Blood clotting platelets seal the wound and fibers create a scaffold for wound healing. Macrophages engulf aging neutrophils to end the acute inflammatory...
FAQs
Cytines released after immune detection act as signaling mediators between immune cells, blood vessels, and distant tissues. They can alter blood-vessel activity, help recruit leukocytes, and influence organ function beyond the original site of danger. This coordination allows the response to support host defense and tissue repair, but widespread signaling can also produce effects such as fever or metabolic dysfunction.
Changes in blood-vessel activity help regulate how inflammatory signals affect tissues and how leukocytes move through the body. Recruited leukocytes contribute to the immune response at sites influenced by infection, injury, or other danger signals. Because these vascular and cellular changes occur across multiple tissues, they help connect local danger detection with broader physiological effects.
Short-term activation can strengthen host defense and support tissue repair after infection or injury. When inflammatory signaling persists or becomes excessive, the same broad response may contribute to fever, metabolic dysfunction, and organ damage. This contrast makes duration and intensity important biological variables when researchers evaluate whether inflammation is protective, maladaptive, or associated with chronic disease.
Immune cells detect infection, tissue injury, or other danger signals and respond by releasing mediators such as cytokines. Those signals extend the response beyond the initial trigger by changing blood-vessel activity, recruiting leukocytes, and influencing organs. Studying these initiating cues helps explain how different forms of danger can converge on shared body-wide inflammatory effects.
Biological studies examine how immune regulation produces effects across tissues and organs, with particular attention to inflammatory mediators and their consequences. Researchers also identify biomarkers, which are measurable indicators associated with the process, to help characterize inflammatory states. These approaches connect cellular signaling with outcomes such as fever, metabolic dysfunction, organ damage, or chronic disease.
Biomarkers can provide measurable evidence that helps researchers identify or characterize inflammatory activity. In the context of systemic inflammation, they support investigation of immune regulation and may help distinguish biologically important changes associated with fever, metabolic dysfunction, organ damage, or chronic disease. Their value lies in linking an otherwise complex body-wide process to information useful for diagnosis or research.
It is relevant whenever immune activation affects multiple tissues or contributes to disease progression. Researchers study the process to understand inflammatory disorders, identify biomarkers for diagnosis, and develop strategies for treatment. Comparing short-term protective responses with persistent or excessive activation also helps clarify how host defense and tissue repair can become associated with chronic disease or organ damage.