Reduction of sperm DNA fragmentation using the magnetic activated cell sorting (MACS) with annexin V microbeads in assisted reproduction
ثبت نشده
چکیده
Sperm DNA integrity is an important paternal factor that has been shown to influence fertilization rates, embryo development and pregnancy rates. To reduces the number of apoptotic spermatozoa many technics are used before ICSI treatment ( e.g. using of antioxidants, testicular spermatozoa). Recently, the use of annexin V microbeads, as a non-invasive method to reduce high levels of sperm apoptosis, could be a new tool to optimize sperm selection in assisted reproduction.
منابع مشابه
P-20: Efficiency of Magnetic-Activated Cell Sorting System in Separation of Normal Sperm
Background Sperm preparation before assisted reproductive techniques is very important for obtaining successful fertilization and pregnancy. During ICSI technique, sperms are selected based on viability and morphology. But this selection did not guarantee integrity of sperm DNA. Therefore, novel sperm selection procedures are introduced for selection of sperm with low DNA damage. One of these p...
متن کاملSelection of nonapoptotic spermatozoa as a new tool for enhancing assisted reproduction outcomes: an in vitro model.
Magnetic cell sorting (MACS) using annexin V-conjugated microbeads eliminates apoptotic spermatozoa based on the externalization of phosphatidylserine residues. The procedure delivers two sperm fractions: annexin V-negative (nonapoptotic) and annexin V-positive (apoptotic). Our aim was to determine whether the sperm fertilizing potential can be improved by selecting a nonapoptotic fraction usin...
متن کاملEvaluation of sperm recovery following annexin V magnetic-activated cell sorting separation.
Magnetic-activated cell sorting (MACS) using paramagnetic annexin V-conjugated microbeads eliminates spermatozoa with externalized phosphatidylserine, which is considered one of the features of apoptosis. The objective of this study was to evaluate sperm recovery following the use of MACS as a sperm preparation technique. Mature spermatozoa were separated and divided into two fractions: the fir...
متن کاملFirst Pregnancy, Somatic and Psychological Status of a 4-Year-Old Child Born following Annexin V TESA Sperm Separation
Introduction Sperm DNA integrity is a crucial paternal factor affecting fertilization and pregnancy rates, as well as embryo development. Case The present case report describes the successful pregnancy after testicular sperm aspiration (TESA) combined with intracytoplasmic sperm injection (ICSI) (TESA-ICSI) in a couple where the male presented high sperm DNA fragmentation. In order to sort dama...
متن کاملI-4: Sperm Preparation: Biomimetic Aspects
With the advent of human assisted reproduction in the year 1978 numerous techniques were developed to isolate spermatozoa capable to fertilize oocytes. While early methodologies only focused on the aim of isolating viable, motile spermatozoa, with further progress of assisted reproductive technology, particularly for ICSI, it rapidly became clear that these two parameters are insufficient for t...
متن کامل