Figure 1.

Effects of the menstrual cycle and pregnancy on H₂S production in human UAs. Protein lysates of intact UAs were subjected to the methylene blue assay for measuring H₂S production in the presence or absence of the specific inhibitors of CSE (BCA), CBS (CHH), or their combination. pPRM and sPRM: proliferative and secretory phases of the menstrual cycle; P: pregnancy. Data (mean ± SEM) are presented as fold of pPRM without inhibitors and are from 10 subjects per group. Bars with different letters differ significantly among the groups (P < 0.05). *P < 0.05; ***P < 0.001; n.s., not statistically different.