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Cortisol Quantification for Assessing Stress-Induced Changes in Zebrafish Larvae.

Raquel S F Vieira1,2, Carlos Venâncio3,4,5, Luís Félix3,4

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Methods in Molecular Biology (Clifton, N.J.)
|January 29, 2024
PubMed
Summary

Early life stress in zebrafish, using vortex flow stimulation, impacts the hypothalamic-pituitary-interrenal (HPI) axis. This model helps analyze stress responses, neural circuits, and motor alterations in aquatic animals.

Keywords:
BehaviorCortisolLarvaeStress-responseZebrafish

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Area of Science:

  • Neuroscience
  • Animal Models
  • Stress Physiology

Background:

  • The stress response, mediated by cortisol, is crucial for homeostasis.
  • Early life stress can impair the hypothalamic-pituitary-interrenal (HPI) axis, affecting long-term brain function.
  • Lack of suitable models has limited the exploration of these stress-induced alterations.

Purpose of the Study:

  • To describe vortex flow stimulation as an acute stressor in zebrafish.
  • To correlate this stressor with behavioral outputs and HPI axis activation.
  • To establish a model for studying early life stress effects on brain functioning.

Main Methods:

  • Utilizing early life stage zebrafish as an aquatic animal model.
  • Implementing vortex flow stimulation to induce acute stress and activate the HPI axis.
  • Employing a behavioral despair model for screening neural circuit and motor alterations.

Main Results:

  • Vortex flow stimulation effectively activates the HPI axis in zebrafish.
  • The model allows for the analysis of stress responses and their correlation with neural circuitries.
  • Behavioral despair serves as a screening tool for assessing neural and motor changes.

Conclusions:

  • Zebrafish offer a viable model for studying the impact of early life stress.
  • Vortex flow stimulation provides a method to experimentally induce and analyze stress responses.
  • This approach facilitates the understanding of stress-related brain disorders and motor alterations.