Publications by authors named "Murat Ulug"
Objective: The absence of any sperm in the ejaculate is called azoospermia and it is detected in 1% of males and 10-15% of those with infertility complaints. Azoospermia may be due to obstructive (OA) and non-obstructive (NOA) causes. Today, healthy pregnancies can be achieved in azoospermic patients by intracytoplasmic sperm injection (ICSI) performed using sperm retrieved from microscopic testicular sperm extraction (m-TESE).
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- This study aimed to assess the effectiveness of the micro swim-up method for sperm preparation in ICSI treatments, comparing it to a traditional centrifuge method.
- In a multicentric study with 140 ICSI cycles, two groups were formed based on the sperm preparation techniques used: one used discontinuous gradients and the other used the micro swim-up method.
- Results showed no significant difference in fertilization rates, but the micro swim-up group had higher blastulation and pregnancy rates, suggesting it may be a cost-effective and efficient alternative to traditional methods.
Objective: To determine live birth rate via m-TESE and ICSI in men who had a previous conventional testicular biopsy.
Study Design: Retrospective study was conducted to analyze 86 m-TESE procedures for ICSI in NOA patients who had a previous conventional TESE. Only motile spermatozoa were used for ICSI and all other forms were discarded.
Purpose: To evaluate the efficacy of blastocyst transfer in women with at least two previously unsuccessful in vitro fertilization-embryo transfer (IVF-ET) attempts.
Methods: Retrospective analysis of 238 couples (with previous implantation failures) had equal number (two) of cleavage-stage embryos (n = 143) or blastocysts (n = 95) transferred in the same IVF center.
Results: The clinical pregnancy rates and live-birth rates were similar in the cleavage-stage embryo transfer group and the blastocyst group (35.
Antithyroid antibodies (ATA) are found in 5-15% of women at reproductive age and are not necessarily accompanied with thyroid dysfunction. ATA are associated with adverse effects such as spontaneous miscarriage, recurrent miscarriages, preterm delivery and maternal post-partum thyroiditis in women with normal thyroid hormone concentrations. The role of ATA on the outcome of IVF cycles remains to be investigated.
View Article and Find Full Text PDFObjective: To compare the outcome of intracytoplasmic sperm injection (ICSI)-ET cycles with fresh testicular spermatozoa obtained on the same day or the day before oocyte retrieval with frozen-thawed spermatozoa.
Design: Retrospective cohort study.
Setting: Fertility center.
Vitrification of laser treated human blastocysts using reduced concentrations of permeable cryoprotectants was carried out by submerging cut standard straws (CSS) into liquid nitrogen. The CSS were made by cutting a standard 0.25 ml straw at an angle of approximately 45 degrees .
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