First report of frequencies of Y chromosome microdeletions at a reproductive medicine center in Peru.

Objective: Y chromosome Microdeletions are the second genetic cause of infertility in men. Despite its importance for infertility treatment, there is no previous research in Peru. The aim of this study was to determine the frequencies and characteristics of Y chromosome microdeletions in a group of men who sought infertility consultation at a specialized reproductive medicine center in Peru.

Impact of the Z potential technique on reducing the sperm DNA fragmentation index, fertilization rate and embryo development.

Background: In assisted reproduction procedures, we need to develop and enhance new protocols to optimize sperm selection. The aim of this study is to evaluate the ability of the Z potential technique to select sperm with intact DNA in non-normospermic patients and evaluate the impact of this selection on embryonic development.

Methods: We analyzed a total of 174 human seminal samples with at least one altered parameter.