Paralysis Phenotype

A paralysis phenotype is an observable loss or reduction of voluntary movement that reflects disruption in the nervous system, muscles, or communication between them. In biological research, it can arise when altered genes, toxins, injury, or disease interfere with neuronal signaling, neuromuscular transmission, muscle contraction, or motor-circuit function. Researchers characterize the phenotype by assessing onset, severity, affected body regions, and reversibility in organisms or experimental models. These measurements help link molecular and cellular defects to behavior, identify pathways involved in movement, evaluate disease mechanisms, and assess potential treatments for neurological and neuromuscular disorders.

Paralysis Phenotype - Related Videos

Research

JoVE EoE - Assay Techniques

Fluorescent Reporter-Based Paralysis Assay: A Technique to Assess Age-Associated Progressive Formation of Polyglutamine Fluorescent Reporter and Associated Paralysis in Caenorhabditis elegans

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2025

This video demonstrates an in vivo imaging-based assay to determine proteostasis decline due to aging. The assay uses Caenorhabditis elegans expressing polyglutamine YFP-fusion protein in body wall muscles to measure the age-associated aggregation of polyglutamine and induction of proteotoxicity, leading to paralysis.

Research

JoVE Journal - Immunology and Infection
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Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

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Cited by 10 •

2017

Here, we present a protocol to induce paralysis and opticospinal inflammation by transfer of aquaporin-4 (AQP4)-specific T cells from AQP4-/- mice into WT mice. In addition, we demonstrate how to use serial optical coherence tomography to monitor visual system dysfunction.

Inducing Paralysis in a Mouse Model via Transfer of Aquaporin-4-Specific Th17 Cells

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2025

This video demonstrates the procedure of inducing paralysis by transferring activated Th17 cells targeting aquaporin-4 into a mouse model. In the central nervous system, the activated Th17 cells interact with aquaporin-4-expressing astrocytes, triggering an immune response that leads to tail and limb paralysis in the mouse.

Swimming-Induced Paralysis (SWIP) Assay: A Method to Quantify Dopamine-Mediated Locomotion in C. elegans

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2023

Here, we introduce an assay to measure SWIP, a behavioral phenotype of C. elegans that occurs during vigorous motion like swimming. The example protocol discusses both manual and automated analysis approaches.

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

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Cited by 17 •

2015

The use of the masseteric nerve as donor nerve represents a single-stage alternative to the criterion standard two-stage procedure of cross-facial nerve grafting and free muscle transfer in facial paralysis. We provide a detailed description to safely perform this technique with a gracilis muscle transfer and discuss indications and limitations.

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