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June 19, 2026Journal of the American Association for Laboratory Animal Science

Alfaxalone-Based Anesthetic Combinations to Minimize Anesthesia-Induced Transient Lens Opacity in Rats (Rattus norvegicus)

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Authors

AYAtsuko YamashitaYYYoshinori Yamagiwa

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Overview

Randomized trial investigates anesthetic combinations to reduce lens opacity in rats, suggesting a safer option for eye research.

Key Points

  • This study aims to evaluate the efficacy of alfaxalone-based anesthetic combinations in reducing anesthesia-induced lens opacity in rats.
  • Screened anesthetic protocols using alfaxalone.
  • Evaluated induction profiles of lens opacity after administering alfaxalone-butorphanol and alfaxalone-midazolam-butorphanol.
  • Compared findings with ketamine-xylazine, known to induce lens opacity.
  • Lens opacity from alfaxalone combinations was significantly milder than that caused by ketamine-xylazine.
  • Alfaxalone-midazolam-butorphanol provided adequate anesthesia depth while suppressing reflex responses.
  • Depth of anesthesia with alfaxalone was lower than ketamine-xylazine, but sufficient for morphological assessments.

Cite This Study

Yamashita et al. (2026) studied this question.

synapsesocial.com/papers/6a34de9d65a5b0777af2de8dhttps://doi.org/10.30802/aalas-jaalas-26-013
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