Summarized by Masters of Longevity from Aging Cell.
Age-related hearing loss research article examining how IGF‑1 and a mitochondrial carrier support blood–labyrinth barrier health; invites readers curious about mechanisms preserving auditory microvascular stability.

Key Takeaways
- IGF‑1 and SLC25A33 jointly maintain blood–labyrinth barrier integrity by inhibiting TGF‑β/Smad2 mediated pericyte activation.
- Pericyte activation via TGF‑β/Smad2 is implicated as a mechanistic contributor to age‑related hearing loss in the study.
- Modulating IGF‑1 or SLC25A33 signaling altered barrier integrity and pericyte activation in the reported experimental models.



