Sperm Selection and Embryo Development: A Comparison of the Density Gradient Centrifugation and Microfluidic Chip Sperm Preparation Methods in Patients with Astheno-Teratozoospermia.

In recent years, microfluidic chip-based sperm sorting has emerged as an alternative tool to centrifugation-based conventional techniques for in vitro fertilization. This prospective study aims to compare the effects of density gradient centrifugation and microfluidic chip sperm preparation methods on embryo development in patient populations with astheno-teratozoospermia. In the study, the semen samples of the patients were divided into two groups for preparation with either the microfluidic or density gradient methods.

Comparison of uterine artery blood flow with levonorgestrel intrauterine system and copper intrauterine device.

Background: As a contraceptive method, we investigated whether the levonorgestrel-releasing intrauterine system (LNG-IUS) has any effect on uterine artery blood flow when compared with copper intrauterine device (IUD).

Study Design: Sixty women with copper IUD and 60 women with LNG-IUS were included in the study. The age, gravidity, parity, body mass index (BMI) and menstrual flow pattern using a pictorial chart were recorded.

Bone turnover and maternal 25(OH) vitamin D3 levels during pregnancy and the postpartum period: should routine vitamin D supplementation be increased in pregnant women?

Objective: To investigate the relationship between 25(OH) vitamin D3 levels and maternal bone turnover during pregnancy and lactation.

Study Design: Thirty pregnant women and 30 healthy non-pregnant controls were included the study. The pregnant women were examined in the 12th, 25th and 32nd gestational weeks and 6 weeks after delivery.

Effect of the new legislation and single-embryo transfer policy in Turkey on assisted reproduction outcomes: preliminary results.

New legislation concerning assisted reproduction treatments was introduced in Turkey in March 2010 in order to reduce the number of multiple pregnancies. This new legislation limits the number of embryos to be transferred to one under 35 years of age in the first or second treatment cycles and to two in the third or further cycles or for 35 and older ages. The aim of this multicentre study was to investigate the effect of this new law on clinical pregnancy and multiple pregnancy rates.