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Related Concept Videos

Cellular Injury IV: Necrosis01:16

Cellular Injury IV: Necrosis

Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...
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Cellular injury occurs when a cell cannot maintain homeostasis or adapt to stressors such as hypoxia, toxins, or trauma. Depending on severity and duration, injury may be reversible, allowing recovery, or irreversible, leading to cell death.General Mechanisms of Cell InjuryAlthough causes vary, most cellular injuries arise from a few key mechanisms that disrupt essential functions and often amplify one another. Cell survival depends on the extent and balance of these disturbances.ATP depletion...
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An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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Cellular injury is any process that disrupts a cell’s ability to maintain homeostasis, leading to structural or functional changes. It is broadly classified based on etiology (cause) and mechanism of damage.Classification by EtiologyCellular injury may result from several causes. Hypoxic injury happens due to reduced oxygen delivery, most commonly from inadequate blood supply, such as arterial obstruction; for example, coronary artery thrombosis can cause myocardial infarction. Chemical injury...
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A Mouse Model of Retinal Ischemia-Reperfusion Injury Through Elevation of Intraocular Pressure
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RNA interference and ischemic injury.

Min Liu1, Jin Sun, Wen Wang

  • 1Department of Cardiology, The First College of Clinical Medical Sciences & Yichang Central People's Hospital, China Three Gorges University, Yichang, 443000, Hubei, China.

Molecular Biology Reports
|May 25, 2011
PubMed
Summary
This summary is machine-generated.

RNA interference (RNAi) is a gene silencing mechanism used to study gene function and develop therapies. This overview explores RNAi mechanisms and its application in treating ischemic injury.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • RNA interference (RNAi) is a significant 21st-century discovery.
  • It functions as a conserved, endogenous gene silencing mechanism.
  • RNAi is a valuable tool for elucidating gene functions.

Purpose of the Study:

  • To provide an overview of the RNA interference (RNAi) mechanism.
  • To discuss the application of RNAi technology in the context of ischemic injury.

Main Methods:

  • Exploration of RNA interference (RNAi) pathways.
  • Review of RNAi-based therapeutic strategies.
  • Analysis of RNAi for ischemic injury treatment.

Main Results:

  • RNA interference (RNAi) enables stable gene knockdown via synthesized small interference RNA (siRNA) or vector-based delivery.
  • RNAi is increasingly utilized in developing therapeutics for viral infections like hepatitis and HIV.
  • The technology shows potential for addressing ischemic injuries.

Conclusions:

  • RNA interference (RNAi) is a versatile gene silencing tool with broad biological and therapeutic applications.
  • Further research into RNAi mechanisms and applications, particularly for ischemic injury, is warranted.