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Impact of Groups on Groups01:19

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Social psychologists analyze how groups influence one another, shaping social structures and interactions through both cooperation and competition. These dynamics manifest in various ways, ranging from economic partnerships to intergroup conflicts that shape societal structures and perceptions.Cooperation and Competition in Intergroup RelationsIntergroup relationships vary across contexts, sometimes fostering cooperation and mutual benefit while at other times leading to conflict and...
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Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
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High Throughput Analysis of Liquid Droplet Impacts
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Impact of

Eleonora Napoli1, Andrea Schneider2,3, Randi Hagerman2,3

  • 1Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States.

Frontiers in Genetics
|September 14, 2018
PubMed
Summary
This summary is machine-generated.

Pediatric fragile X premutation carriers show significant mitochondrial dysfunction, impacting cellular energy production and increasing oxidative stress. This mitochondrial dysfunction correlates with clinical symptoms, suggesting it as a therapeutic target.

Keywords:
FXTASbioenergeticsmitochondrial dysfunctionoxidative stresspremutation

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Area of Science:

  • Genetics
  • Cell Biology
  • Neuroscience

Background:

  • Mitochondrial dysfunction (MD) is documented in adult fragile X premutation (PM) carriers.
  • Limited data exist on pediatric PM carriers' bioenergetics and mitochondrial health.

Purpose of the Study:

  • To investigate mitochondrial function and bioenergetics in pediatric fragile X premutation carriers.
  • To explore the relationship between CGG repeat expansion, mitochondrial dysfunction, and clinical phenotype in a pediatric case.

Main Methods:

  • Case report analysis of three PM carriers (two pediatric twins, one adult mother).
  • Assessment of cellular bioenergetics, mitochondrial network integrity, mitochondrial reactive oxygen species (ROS) production, and HIF-1α stabilization in fibroblasts and lymphocytes.

Main Results:

  • Pediatric twins exhibited generalized OXPHOS deficit, altered mitochondrial networks, and increased mitochondrial ROS, distinct from their mother.
  • Mitochondrial dysfunction severity correlated with phenotypic morbidity.
  • Mitochondrial ROS-mediated HIF-1α stabilization was identified as a key factor in MD.

Conclusions:

  • Pediatric PM carriers can present with significant mitochondrial dysfunction.
  • CGG expansion, X-activation ratio, sex hormones, and epigenetic factors may modulate MD.
  • Targeting mitochondrial ROS and HIF-1α stabilization offers a potential therapeutic strategy for MD in PM carriers.