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Comparison of DNA fragmentation levels in spermatozoa with different sex chromosome complements
Results: The HSI (which was inversely proportional to DNA fragmentation level) of Y chromosome-bearing spermatozoa was significantly (P < 0.05) lower than that of X chromosome-bearing spermatozoa in both normozoospermic and pathozoospermic groups. The HSI of sex chromosome-aneuploid spermatozoa was also significantly (P < 0.05) lower than that of monosomic spermatozoa.
Evidence that prenatal testosterone transfer from male twins reduces the fertility and socioeconomic success of their female co-twins
Data on all twin births in Norway between 1967 and 1978 show that females exposed in utero to a male co-twin have a decreased probability of graduating from high school (15.2%), completing college (3.9%), and being married (11.7%), and have lower fertility (5.8%) and life-cycle earnings (8.6%).
DNA Methylation Patterns in the Early Human Embryo and the Epigenetic/Imprinting Problems: A Plea for a More Careful Approach to Human Assisted Reprod
Care should be exercised in ART (assisted reproductive technology) procedures in order to avoid the risk of generating errors in methylation during the in vitro culture period immediately post fertilization, which has an impact on imprinting/epigenetics. Formulation of IVF culture media needs to be re-assessed in the perspective of current knowledge regarding embryo physiology.
Quadruple pregnancy after post-IVF/ICSI transfer of blastocysts
This is the case of a 29-year-old woman patient with transfer of two blastocysts after long cultivation of 6 embryos generated by ICSI and vitrified on day +3. This revealed quadruple clinical pregnancy (monochorionic diamniotic and dichorionic diamniotic) of 56 days of evolution by transvaginal ultrasound.
Generational Health Impact of PCOS on Women and their Children
Polycystic ovary syndrome (PCOS) is a metabolic disorder with reproductive consequences. Hence, the synergy of the dual maternal challenges of difficulties with conception, set on a background of metabolic disorder and inflammation, understandably leads to increased obstetric risk for the woman. Furthermore, she is more likely than her peers to require assistance with conception, either through induction of ovulation with the attendant risk of a
Flagellar ultrastructure suppresses buckling instabilities and enables mammalian sperm navigation in high-viscosity media
Our findings demonstrate that the accessory structures reinforce the flagellum, preventing waveform compression and symmetry-breaking buckling instabilities when the viscosity of the surrounding medium is increased. This is in agreement with previous observations of internal and external fertilizers, such as human and sea urchin spermatozoa. In turn, possession of accessory structures entails that the progressive motion during a flagellar beat cy
Mathematicians reveal secret to human sperm's swimming prowess
Researchers have discovered that a reinforcing outer-layer which coats the tails of human sperm is what gives them the strength to make the powerful rhythmic strokes needed to break through the cervical mucus barrier.
Prenatal testosterone linked to long-term effects in females who share womb with male twin
Women who shared their mother's womb with a male twin are less likely to graduate from high school or college, have earned less by their early 30s, and have lower fertility and marriage rates when compared with twins who are both female, according to new research.
HROpen is the European Society of Human Reproduction and Embryology's new, fully open access journal in reproductive medicine. It seeks to improve the understanding of reproductive medicine, and improve the quality of clinical care by making scientific research freely accessible to those providing or seeking treatment.
In-line filter for cylinder and house gasses
O2, N2, CO2, and tri-gas. Aire~LifeLine provides in-line air filtration with top of the line protection, delivering a better and more consistent yield of cylinder and house gasses for a wide range of med
Vit Kit - Warm NX is an adaptable, cost-effective system for use in the thawing of oocytes, pronuclear zygotes, cleavage stage embryos, and blastocyst stage embryos. Unlike many vitrification kits that feature a mono-buffered system and M199 base med
Vit Kit - Freeze NX is an adaptable, cost-effective system for use in the vitrification of oocytes, pronuclear zygotes, cleavage stage embryos, and blastocyst stage embryos. Vit Kit - Freeze NX is the latest advancement in vitrification media aimed t
S-Cryolock is the slimmer version of the original. It is a versatile, simple and efficient vitrification device that is intended for the holding, cryopreservation and storage of oocytes or embryos in liquid nitrogen.
Source
Irvine Scientific
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