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Inflammatory Response01:28

Inflammatory Response

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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.
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Inflammatory Response II: Inflammatory Exudate and Tissue Repair01:24

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The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
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Inflammatory Response I: Vascular and Cellular01:30

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The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
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Oxidation Numbers03:14

Oxidation Numbers

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In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
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Pyruvate Oxidation01:15

Pyruvate Oxidation

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After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells.
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Oxidation–Reduction Reactions
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How Oxidized Low-Density Lipoprotein Activates Inflammatory Responses.

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Cardiovascular disease (CVD) is a leading cause of death, often driven by atherosclerosis. Oxidized LDL (oxLDL) plays a key role in artery inflammation and disease progression, impacting immunity.

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Area of Science:

  • Biochemistry
  • Immunology
  • Cardiovascular Medicine

Background:

  • Cardiovascular disease (CVD) is the leading cause of mortality globally.
  • Atherosclerosis, characterized by arterial fatty plaques, is the primary driver of CVD.
  • Low-density lipoprotein (LDL) levels correlate with atherosclerosis severity.

Purpose of the Study:

  • To review mechanisms by which oxidized LDL (oxLDL) influences inflammatory responses.
  • To explore the role of oxLDL in modulating atherosclerosis.

Main Methods:

  • Literature review of studies on LDL oxidation and atherosclerosis.
  • Analysis of proposed mechanisms linking oxLDL to inflammation.
  • Examination of oxLDL's impact on innate and adaptive immunity.

Main Results:

  • Oxidized LDL (oxLDL) is antigenically potent and significantly contributes to atherosclerosis-associated inflammation.
  • Oxidative modification of LDL within the vasculature is a complex process.
  • Oxidized LDL activates both innate and adaptive immune responses.

Conclusions:

  • Oxidized LDL is a critical factor in the inflammatory processes underlying atherosclerosis.
  • Understanding oxLDL's immunomodulatory effects is key to developing new therapeutic strategies for atherosclerosis.