Oral whole-leaf matcha partially attenuates UV-induced dermoepidermal disruption and collagen phenotype alterations in a rat model of repeated photoaging.

Front Med (Lausanne) · 2026 · PMC13290547 · PMID 42359064

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showed a trendno p-value reported

Matcha supplementation did not restore total collagen content over the experimental period; however, the UV + Matcha group showed a trend toward a more favorable collagen composition, with numerically higher type I collagen, lower type III collagen, and a higher type I/III ratio relative to the UV group.

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did not reach statistical significanceno p-value reported

The UV + Matcha group showed numerically higher type I collagen values and a higher type I/III collagen ratio than the UV group; however, these pairwise differences did not reach statistical significance.

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