The sperm penetration assay (SPA) is used to predict the fertilizing capacity of sperm. Thus, some programs rely on SPA scores to formulate insemination plans in conjunction with in-vitro fertilization (IVF) cycles. The purpose of this study was to evaluate if a relationship exists between SPA scores and polyspermy rates during conventional IVF cycles.
Molecular Mechanisms in Uterine Epithelium during Trophoblast Binding:
The Role of Small GTPase RhoA in Human Uterine Ishikawa Cells
Patients suffering from diseased and injured organs may be treated with transplanted organs. However, there is a severe shortage of donor organs which is worsening yearly due to the aging population. Scientists in the field of tissue engineering apply the principles of cell transplantation, materials science, and bioengineering to construct biological substitutes that will restore and maintain normal function in diseased and injured tissues.
Over the past two decades, an epidemic of multiple pregnancies has taken place in the developed world due to the widespread use of assisted reproductive technology. The general public has come to accept the phenomenon of higher order multiple as being a normal occurrence, expecting a good outcome for both the fetuses and the mother.
In recent years, clinical assisted reproduction techniques (ART) are increasingly being practiced worldwide, which in turn has led to an accumulated surplus of cryopreserved embryos within fertility clinics [1,2].
Serum Estradiol/Progesterone Ratio on Day of Embryo Transfer May Predict Reproductive Outcome
Following Controlled Ovarian Hyperstimulation and In vitro Fertilization
Ectopic pregnancy, or preembryo implantation outside the endometrial cavity (i.e., fallopian tube, cervix, abdominal or pelvic cavity), is a potentially fatal condition with an incidence of 1:150 diagnosed pregnancies.
One of the most publicized papers of the 1999 American Society of Reproductive Medicine/ Canadian Fertility and Andrology Society was the research presented by Dr. Oktay, Dr. Karkujaya, Dr. Gosden and Dr. Schwartz from Cornell University in New York and and from the University of Leeds in the UK. They successfully auto-transplanted frozen-banked ovarian tissue and demonstrated the resumption of ovarian function.
Polycystic ovary syndrome is characterized by anovulation (irregular or absent menstrual periods) and hyperandrogenism (elevated serum testosterone and androstenedione). Patients with this syndrome may complain of abnormal bleeding, infertility, obesity, excess hair growth, hair loss and acne.
So far medicine has had nothing to offer the man with azoospermia because of testicular failure, in the way of treatment. His only treatment choices were: adoption, or donor insemination.