Testicular biopsy was performed on the male partner and testicular samples were frozen. The female partner underwent ovarian stimulation and 31 mature oocytes were recovered by ultrasound-guided vaginal aspiration. Twelve oocytes were cryopreserved by the Cryotop vitrification method and 19 oocytes Selleckchem ICG-001 were inseminated by intracytoplasmic sperm injection (ICSI) using frozen-thawed testicular spermatozoa.
Nine out of 19 oocytes were fertilized and the resulting embryos were cryopreserved by slow freezing. Four months later, two Out of six thawed embryos were transferred, but no pregnancy resulted. One year later, the couple decided to attempt pregnancy using vitrified oocytes and frozen testicular spermatozoa. Six vitrified-warmed oocytes were injected with frozen-thawed testicular spermatozoa and four were fertilized. On the day of transfer, two cleavage stage embryos (4-cell, 2-cell) were obtained. Serum beta-HCG test 14 days after embryo transfer was positive. Hormonal support for the established pregnancy was maintained with oestradiol and progesterone orally until 12 weeks of gestation. A healthy baby boy weighing 3.09 kg was delivered by elective Caesarean section at 38 weeks of gestation. This case report demonstrates that oocyte cryopreservation
by the Cryotop vitrification method does not compromise oocyte developmental competence.”
“Objective: folic acid (FA) administration can reduce plasma total homocysteine (tHcy); however, MS-275 supplier it fails to decrease cardiovascular events and progression of peripheral artery disease (PAD). N epsilon-homocysteinyl-lysine isopeptide (N epsilon-Hcy-Lys) is formed during catabolism of homocysteinylated proteins. We sought to investigate factors that determine the presence of N epsilon-Hcy-Lys in PAD patients with hyperhomocysteinemia receiving FA.
Patients and methods: We studied 131 consecutive PAD patients with tHcy >
15 mu mol l(-1) taking FA 0.4 mg d(-1) for 12 months. Serum N epsilon-Hcy-Lys was determined by high-performance liquid chromatography (HPLC). We also measured interleukin-6 (1L-6), plasminogen activator inhibitor-1 (PAI-1), asymmetric learn more dimethylarginine (ADMA) and 8-iso-prostaglandin F-2 alpha (8-iSO-PGF(2 alpha)).
Results: FA administration resulted in a 70.5% decrease in tHcy (p < 0.0001). However, serum N epsilon-Hcy-Lys was detectable in 28 (21.4%) patients on FA who were more frequently current smokers and survivors of ischaemic stroke (p < 0.001). They had higher tHcy by 46.0%, PAI-1 by 51.7%, 8-iso-PCF2 alpha by 59.1% and ADMA by 26.4% (all, p < 0.0001). The presence of N epsilon-Hcy-Lys was associated with lower ankle-brachial index (ABI) values (p < 0.001) and higher prevalence of cardiovascular events (p < 0.001) following therapy.