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

Inflammatory Response II: Inflammatory Exudate and Tissue Repair

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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.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
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Inflammatory Response I: Vascular and Cellular01:30

Inflammatory Response I: Vascular and Cellular

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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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Vascular Spasm01:16

Vascular Spasm

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Clot Retraction and Fibrinolysis01:16

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After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
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Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

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Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
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Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation
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Resolvin D2は,炎症を解消しながら,発血後の再血管化を強化する.

Michael J Zhang1, Brian E Sansbury2, Jason Hellmann2

  • 1Institute of Molecular Cardiology, Diabetes and Obesity Center, Division of Cardiovascular Medicine, University of Louisville School of Medicine, Louisville, KY.

Circulation
|August 11, 2016
PubMed
まとめ
この要約は機械生成です。

レゾルビンD2 (RvD2) は,血管の成長を促進し,肢体イシュケミアの後の循環を改善します. この脂質媒介体は 炎症を和らげ 新しい血管の形成を刺激し 新しい治療法を提供します

キーワード:
イメージ技術炎症外周血管疾患リヴァスカライゼーション

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科学分野:

  • 脂質媒介体
  • 炎症解像度
  • 血管生物学

背景:

  • レゾルビンは,炎症解消と組織修復に関与する脂質媒介体です.
  • 缺血後の再血管化の役割は未知のままです.

研究 の 目的:

  • 後肢イシュケミア (HLI) の後の組織再血管化におけるリゾルビンの役割を調査する.
  • 血管新生を促進し,炎症を和らげるための潜在的な治療薬としてリゾルビンを探求する.

主な方法:

  • 後肢不全症 (HLI) のマウスモデル
  • レーザー・ドップラー・パーフュージョン・イメージング マイクロコンピュータ・トモグラフィー 質量スペクトロメトリー
  • 単細胞の募集,内皮細胞の移動,および組織病理学的分析.

主要な成果:

  • リゾルビンD2 (RvD2) は,筋不全と外周動脈疾患の患者で確認されました.
  • 外因的なRvD2は,HLIマウスの perfusion recovery を強化し,動脈形成を促進し,炎症マーカーを減少させた.
  • RvD2は,糖尿病のマウスの再血管化を改善し,GPR18経由で内皮細胞の移行を強めた.

結論:

  • RvD2は動脈再血管化を刺激し,HLI中の炎症を解消する.
  • リゾルビンは,不血性疾患の治療の可能性のある新しいメディエーターのクラスです.