title: Magnetic activated cell sorting (MACS): utility in assisted reproduction.
abstract: Assisted reproductive techniques (ART) have now been extensively incorporated in the management of infertile couples. But even after rapid methodological and technological advances the success rates of these procedures have been below expectations. This has led to development of many sperm preparation protocols to obtain an ideal semen sample for artificial reproduction. Sperm apoptosis has been heavily linked to failures in reproductive techniques. One of the earliest changes shown by apoptotic spermatozoa is externalization of phosphatidyl serine. Magnetic activated cell sorting (MACS) is a novel sperm preparation technique that separates apoptotic and non-apoptotic spermatozoa based on the expression of phosphatidylserine. This has led to the incorporation of MACS as a sperm preparation technique. The review highlights the principle and mechanism of this novel technique and enumerates its advantages as a sperm preparation technique. Its utility in ART as an efficient tool for sperm recovery and its application in cryopreservation of semen samples is also explained.
authors.affiliation: Center for Reproductive Medicine, Glickman Urological and Kidney Institute and Obsterics and Gynecology and Women's Health Institute, Cleveland Clinic, Cleveland, Ohio, 44195 USA.
authors.forename: Kartikeya
authors.initials: K
authors.lastname: Makker
authors.forename: Ashok
authors.initials: A
authors.lastname: Agarwal
authors.forename: Rakesh K
authors.initials: RK
authors.lastname: Sharma
mesh_terms: D000818:Animals; D017209:Apoptosis; D015415:Biomarkers; D002469:Cell Separation / Q000379:methods*; D015925:Cryopreservation; D006801:Humans; D008280:Magnetics; D027724:Reproductive Techniques, Assisted
chemical_list: D015415:Biomarkers