Cisplatin Differentially Damages Mammalian Vestibular End Organs.
John Lee, Hong Zhu, Wu Zhou and 1 others
PMID 41469892WHAT IT FOUND
Cisplatin damaged the saccule in mice, causing progressive balance issues and hair cell loss, while sparing the utricle and semicircular canals.
Human tissue reports matched this pattern at high doses. Standard balance tests may miss this specific injury, suggesting the need for saccule-focused screening.
Key findings
01Cisplatin treatment significantly elevated vestibular thresholds in mice, indicating saccular damage that worsened over six months, while utricle and semicircular canal functions remained largely normal.
02Histological analysis showed significant loss of type I hair cells in the saccules of cisplatin-treated mice, with no such loss in the utricle or horizontal semicircular canals.
03Review of human temporal bones from cisplatin-treated patients found saccular degeneration in the patient with the highest cumulative dose, supporting the mouse findings that the saccule is uniquely susceptible.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study uses a mouse model, which may not fully replicate human physiology or dosing schedules. Human data is limited to 18 temporal bone reports, most of which lacked cumulative dose information or objective vestibular testing results. The mouse model could not test dose-response relationships due to toxicity limits, and the human data was retrospective and observational. Translational VOR gains were low in both groups at low frequencies, which might have masked subtle utricle damage.
Declared interests
The study was approved by NIH and University of Mississippi Medical Center Animal Care and Use Committees. No specific commercial funding or author conflicts of interest are explicitly detailed in the provided text beyond standard institutional affiliations.
The easy way to misread this
Do not assume that normal results from standard balance tests like caloric irrigation or head impulse testing mean the patient's vestibular system is intact. This study shows cisplatin can severely damage the saccule while leaving the semicircular canals and utricle functional, so specific tests like cervical VEMPs are needed to detect this injury.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →