Cytoplasmic Transfer Improves Human Egg Fertilization and Embryo Quality: an Evaluation of Sibling Oocytes in Women with Low Oocyte Quality.

The aim of this study was to evaluate if cytoplasmic transfer can improve fertilization and embryo quality of women with oocytes of low quality. During ICSI, 10-15% of the cytoplasm from a fresh or frozen young donor oocyte was added to the recipient oocyte. According to the embryo quality, we defined group A as patients in which the best embryo was evident after cytoplasmic transfer and group B as patients in which the best embryo was evident after a simple ICSI.

High incidence of monozygotic twinning in infertility treatment.

Background: Monozygotic twinning is associated with increased perinatal morbidity and mortality. There is evidence that the number of monozygotic twins increases after assisted reproductive techniques.

Methods: We searched PUBMED, MEDLINE, and Scopus from 1987 to 2015 for studies analyzing the incidence and possible etiology of monozygotic twinning in infertility patients and critically reviewed the current state of knowledge.

Infertility treatment of men with non-obstructive azoospermia.

Male infertility can be treated by several methods with varying degree of success. We present evidence that "open" testicular biopsy is favorable for men suffering from non-obstructive azoospermia (NOA). Moreover, any NOA patient may be subjected to this treatment even though his past histopathological examinations suggest that it is likely no sperm will be found in the testicular tissue.