Abstract
The effect of pentoxifylline (PF) treatment on human sperm motility and fertilizing capacity was assessed in 43 couples undergoing IVF/ET, as well as in 84 couples treated with AIH/IUI. Sperm motility increased following PF treatment in asthenospermic samples (n = 12) from 39.2 +/- 1.5 to 45.5% +/- 2% (p = .05), in oligoasthenospermic (n = 40) from 38.1 +/- 1.6 to 43.6 +/- 1.7% (p = .001), and in total (n = 127) from 50 +/- 1 to 52.5 +/- 1% (p < .001). In addition, PF incubation of sperm samples resulted in higher sperm motility values compared to swim-up in all categories of sperm samples. Furthermore, progressive motility increased in all sperm groups following PF treatment (astheno-spermic: +16.7%; oligoasthenospermic: +14%, p < .001; oligozoospermic: +23.5%, p < .001; normozoospermic: +15.3%, p < .05; total +19.2%, p < .001). Sperm preparation with PF resulted in higher fertilization rates in all categories of sperm samples compared to swim-up (total: 46.6 vs. 29.1%, respectively; p < .05). Moreover, PF treatment of human sperm resulted in 9 viable pregnancies (IVF/ET: 5, AIH/IUI: 4) and one biochemical (IVF/ET). PF improving sperm motility and fertilizing capacity appears to be a promising motility stimulant.
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