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This study investigates changes in the testis during the aging process of the turquoise killifish, focusing on mid-age remodeling.

July 23, 2026BMC BiologyOpen Access

A lifespan atlas of the killifish testis defines a pronounced mid-age remodeling shift during testicular aging

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This study investigates changes in the testis during the aging process of the turquoise killifish, focusing on mid-age remodeling.
Histological analysis of testicular development stages in turquoise killifish
Assessment of molecular pathways involved in testicular aging
Comparison of early and late-life testicular structures
Proliferative activity peaks early in adulthood, then declines sharply during mid-age
Mid-age testicular changes are marked by significant remodeling, including changes in extracellular matrix and associated pathways
Late-life testes show minimal additional structural changes, indicating stability in the low-proliferative state.

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Randomized trial examines structural remodeling in the testis of turquoise killifish, suggesting insights into reproductive aging mechanisms.

Franěk et al. (2026) studied this question.

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Randomized trial examines structural remodeling in the testis of turquoise killifish, suggesting insights into reproductive aging mechanisms.