PUBLICATION

A gelatin-based feed for precise and non-invasive drug delivery to adult zebrafish

Authors
Ochocki, A.J., Kenney, J.W.
ID
ZDB-PUB-230107-2
Date
2023
Source
The Journal of experimental biology   226(2): (Journal)
Registered Authors
Kenney, Justin W.
Keywords
Behavior, Drug delivery, Pharmacology, Sex differences, Strain, Zebrafish
MeSH Terms
  • Animals
  • Anxiety
  • Behavior, Animal
  • Dizocilpine Maleate*
  • Gelatin
  • Male
  • Zebrafish*
PubMed
36606734 Full text @ J. Exp. Biol.
Abstract
Although the use of adult zebrafish as a model organism has increased in recent years, there is room to refine methods, like drug delivery, to make them less invasive and more precise. Here, we describe the development of a non-invasive gelatin-based feed method that is tailored to animals based on their weight. The feed was readily eaten by zebrafish (< 1 minute) with minimal leaching of compound when placed in water (< 5% in 5 minutes). As a proof-of-principle, we fed fish a NMDAR antagonist (MK-801, 4 mg/kg) prior to the novel tank test. We found that MK-801 caused a general decrease in predator-avoidance/anxiety-like behavior (bottom dwelling) and an increase in locomotion in male fish, but not females. Our simple, easy to prepare, and individually tailored gelatin-based feed enables precisely dosed, non-invasive drug delivery to adult stage zebrafish for the first time.
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