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Related Concept Videos

Cell Migration01:09

Cell Migration

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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
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When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
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A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
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The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
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Migration00:53

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Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager
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Early mobilization: Why, what for and how?

A R Miranda Rocha1, B P Martinez2, V Z Maldaner da Silva3

  • 1Rehabilitation Division, Hélvio Auto Hospital, Alagoas, Brazil; University Center Cesmac, Alagoas, Brazil.

Medicina Intensiva
|March 12, 2017
PubMed
Summary

Early mobilization in intensive care units (ICUs) can improve patient outcomes and reduce hospital stays. However, specific patient populations and tailored protocols are key to achieving positive results from these interventions.

Keywords:
Early mobilizationFisioterapiaIntensive care unitMovilización precozPhysical therapyUnidad de cuidados intensivos

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Area of Science:

  • Critical Care Medicine
  • Rehabilitation Therapy
  • Neurology

Background:

  • Early mobilization in intensive care units (ICUs) is linked to improved patient outcomes.
  • Factors like protocols, patient selection, and barriers influence mobilization effectiveness.
  • Polyneuromyopathy is a significant concern for critically ill patients.

Purpose of the Study:

  • To examine the main early mobilization protocols in ICUs.
  • To evaluate the associated results and influencing factors of these protocols.
  • To identify patient populations that benefit most from early mobilization.

Main Methods:

  • Literature review of early mobilization protocols.
  • Analysis of techniques including kinesitherapy, transfer/locomotion training, neuromuscular electrical stimulation, and cycle ergometry.
  • Examination of study outcomes based on patient populations and intervention parameters.

Main Results:

  • Mobilization protocols show variable results, influenced by numerous factors.
  • Some studies and meta-analyses found no positive effects of general mobilization.
  • Specific populations, like those with immobility-related weakness and preserved neuromuscular excitability, show more positive responses.

Conclusions:

  • Early mobilization strategies offer potential benefits in critical care.
  • Protocol and patient selection are crucial for successful implementation.
  • Targeted mobilization programs can enhance recovery for specific patient groups, particularly those with preserved neuromuscular function.