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. 2022 Dec 15;12:21715. doi: 10.1038/s41598-022-26095-0

Figure 4.

Figure 4

Menopause-induced reduction in sphingoid base carbon number occurs in all types of sphingoid base. Menopause stratum corneum demonstrated increased percentage of shorter sphingoid bases and decreased percentage in longer sphingoid bases across all base types (a, dihydrosphingosine (DS); b, sphingosine (S); c, 6-hydroxysphingosine (H); and d, phytosphingosine (P). White bars, pre-menopausal (Pre, n = 7); black bars, post-menopausal (Post, n = 11); grey bars, post-menopausal with hormone replacement therapy (Post + HRT, n = 10). Data are presented as percent of total for respective sphingoid base, mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001. One-way ANOVA with Tukey’s multiple comparison, adjusted P values represented.