Fertilization failure refers to the failure in the pronucleus formation, evaluating 16-18 h post
in vitro fertilization or intracytoplasmic sperm injection. It can be caused by sperm, oocytes …

Fertilization failure during assisted reproductive technologies (ART) is often unpredictable,
as this failure is encountered only after in vitro fertilization (IVF) and intracytoplasmic sperm …

BACKGROUND The complexity of fertilization failure during assisted reproductive
technologies (ART) is often under-appreciated, as this failure can occur at any number of …

Improving outcomes of after fertilization failure with intracytoplasmic sperm injection: the role of
differentiating oocyte-rela Page 1 Improving outcomes of after fertilization failure with …

BACKGROUND Infertility and pregnancy loss are longstanding problems. Successful
fertilization and high-quality embryos are prerequisites for an ongoing pregnancy. Studies …

Fertilization failures diminish the number of zygotes available for fertility treatment. When
considering the potential etiologies of fertilization failures, oocyte determinants merit careful …

Purpose Total fertilisation failure (TFF), even with intracytoplasmic sperm injection (ICSI),
occurs in approximately 3% of cycles, can be recurrent and the exact cause is difficult to …

Each stage of embryonic development, including normal gamete maturation, fertilization,
zygotic genome activation, and cleavage, is crucial for human reproduction. Early embryo …

BACKGROUND Infertility affects between 10 and 16% of couples worldwide. Twenty to 30%
of cases of infertility are due to a male factor, 20–35% to a female factor, and 25–40% are …

It is obvious that both oocyte and sperm quality play a major role in the success of in vitro
fertilization (IVF). In the case of total fertilization failure (TFF), and mainly for idiopathic …