By T F Kruger; Daniel R Franken
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Additional info for Atlas of human sperm morphology evaluation
Penetration of human spermatozoa into the human zona pellucida and the zonafree hamster egg: a study of fertile donors and infertile patients. In Keel BA, Webster BW, eds. Characterization of the biologic activities of a recombinant human zona pellucida protein 3 expressed in human ovarian teratocarcinoma (PA1) cells. Outcome of intracytoplasmic sperm injection in azoospermic patients: stressing the liaison between the urologist and reproductive medicine specialist. 11 showed the AI to be a more sensitive parameter, compared with normal sperm morphology evaluated according to strict criteria, in the prediction of expected in vitro fertilization rates of ≥50%; the use of the AI was found to be particularly useful in the P pattern group of patients.
Male infertility problems may be successfully treated with (a) urological interventions (surgical or nonsurgical treatments, such as conventional, microsurgical, or laparoscopic surgery, including correction of varicocele, epididymo and vasovasostomy and modern approaches for ejaculatory disorders); (b) medical therapies (such as specific treatment of hypogonadism, hyperprolactinemia, and infection); while (c) a significant proportion will proceed to low and highcomplexity ARTs (assistedreproduction techniques).
The ability for zona pellucidabound spermatozoa to undergo the zona pellucidainduced acrosome reaction may also play an important role in nonfertilization18,19. With good brightfield optics, at 1000× or preferably 1250× magnification and good Papanicolaou staining of the spermatozoa, valuable information on acrosomal morphology can be obtained1,11. This means that the acrosome index will always be equal, but in most cases greater, compared with the percentage of morphologically normal spermatozoa.