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Related Concept Videos

Nitric Oxide Signaling Pathway01:28

Nitric Oxide Signaling Pathway

Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure to...
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,...
Paracrine Signaling01:21

Paracrine Signaling

Paracrine signaling allows cells to communicate with their immediate neighbors via secretion of signaling molecules. Such a signal can only trigger a response in nearby target cells because the signal molecules degrade quickly or are inactivated if not taken up. Prominent examples of paracrine signaling include nitric oxide signaling in blood vessels, synaptic signaling of neurons, the blood clotting system, tissue repair/wound healing, and local allergic skin reactions. Nitric oxide as a...
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
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Acute Inflammation I: Inflammatory Response

Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect damage-associated...
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Immune Response Against Viral Pathogens

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NK Cells
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Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds
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Chemiluminescence-based Assays for Detection of Nitric Oxide and its Derivatives from Autoxidation and Nitrosated Compounds

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Nitric oxide and immune response.

Parul Tripathi1

  • 1Immunology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India. parultripathi@rediffmail.com

Indian Journal of Biochemistry & Biophysics
|March 18, 2008
PubMed
Summary
This summary is machine-generated.

Nitric oxide (NO) is a key immune messenger regulating innate and adaptive immunity. This review explores NO's diverse roles in immune defense, inflammation, and its mechanisms of action.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Nitric oxide (NO) is an intercellular messenger crucial for immune system functions.
  • Innate immune cells like macrophages utilize NO to combat pathogens.
  • NO influences the activity, growth, and death of various immune and inflammatory cells.

Purpose of the Study:

  • To review the multifaceted role of nitric oxide (NO) in immune responses.
  • To elucidate the mechanisms by which NO modulates inflammation and immunity.
  • To highlight the importance of NO in both non-specific and specific immunity.

Main Methods:

  • Literature review of scientific articles on nitric oxide and immunity.
  • Analysis of NO's involvement in cellular signaling pathways.
  • Examination of NO's function in various immune cell types and inflammatory processes.

Main Results:

  • NO acts as a toxic defense molecule against infectious organisms.
  • NO regulates the functional activity, growth, and apoptosis of immune cells.
  • NO plays a significant role in modulating inflammatory responses in vivo.

Conclusions:

  • Nitric oxide is a critical mediator in immune defense and inflammation.
  • Understanding NO's mechanisms is essential for comprehending immune system regulation.
  • Further research is needed to fully grasp NO's complex roles in immunity and disease.