The investigation of diverse physiological and therapeutic impact of cellular-based products derived from human cumulus cells.

Particular somatic cells, namely cumulus cells (CCs) that support the oocyte maturation, fertility, and viability by providing the nutrients and energy to the oocyte envelop the mammalian oocyte. In this study, discarded human cumulus tissues were used to reveal the value of hyaluronic acid-rich CCs on several cellular events, including differentiation. Conditioned media, recovered from the primary culture of CCs, were introduced to the human nucleus pulposus cells (hNPCs) which were functionally distorted because of the loss of chondrogenecity. Enlightening the impact of cumulus conditioned media (CCM) on wound healing and angiogenesis was also investigated. In line with these goals, differentiation of hNPCs into chondrocytes with CCM as the basal medium containing traditional differentiation agents was induced upon isolation and characterization of hCCs and hNPCs. The effects were detected by differentiation-specific cell stains and gene expression analyses. Scratch and tube formation assays were performed to detect the effect of CCM on wound healing and angiogenesis. Our results showed that cumulus cell-conditioned media promoted the chondrogenesis and osteogenesis of hNPCs. A significant increase in angiogenesis and ability for wound closure was detected only in groups cultured in CCM compared to the control. These findings demonstrated that CCM might be used in therapeutics.

Does the use of microfluidic sperm sorting for the sperm selection improve in vitro fertilization success rates in male factor infertility?

AIM: To evaluate the clinical outcome of assisted reproductive technology (ART) cycles in couple with male infertility, where the spermatozoa were selected using either a conventional gradient-density centrifugation technique or microfluidic sperm sorting. METHODS: A total of 181 patients who underwent in vitro fertilization (IVF) because of male factor infertility at the IVF center of Bezmialem and Yeditepe University Hospital were included in this study. All patients were divided into two groups according to the sperm selection method: group I (n = 91): microfluidic sperm-sorting chip; group II (n = 90): density-gradient centrifugation. Data collected included male and female age, type of infertility, duration of infertility, previous IVF attempts, smoking, antral follicle count, total dosage of gonadotropins, maximum estradiol levels, duration of stimulations, endometrial thickness on human chorionic gonadotropin day, total number of oocytes retrieved, number of mature oocytes retrieved, number of pronuclear (PN), sperm parameters, clinical PR and ongoing PR. RESULTS: There was no statistically significant difference in clinical PR and ongoing PR between groups (49.5% vs 40%, P = 0.2; 44% vs 36.7%, P = 0.3; respectively). The improvement in pregnancy rate was more prominent in patients where the female partner's age is higher than 35 (P = 0.09) and men have a total motile sperm count between 1 and 5 million (P < 0.01). CONCLUSION: Microfluidic devices, "labs-on-a-chip," are a disposable, easy to use, and inexpensive method for sperm sorting. Our results show that IVF success rates might improve with the use of a microfluidic sperm-sorting chip for sperm selection in male infertility.

Effect of air bubbles localization and migration after embryo transfer on assisted reproductive technology outcome.

OBJECTIVE: To evaluate the effect of embryo flash position and movement of the air bubbles at 1 and 60 minutes after ET on clinical pregnancy rates (PRs). DESIGN: Prospective clinical trial. SETTING: University fertility clinic. PATIENT(S): A total of 230 fresh ultrasound-guided ETs performed by a single physician (C.F.) at the IVF center of Yeditepe University Hospital between September 2016 and February 2017 were included. INTERVENTION(S): Transabdominal ultrasonographic guidance at ET. MAIN OUTCOME MEASURE(S): Clinical PRs. RESULT(S): There was no significant difference in terms of clinical PRs between women with embryo flash located >15 mm and <15 mm from the fundus at 1 or 60 minutes (P=.6 and P=.7, respectively). The PRs in women with embryo flash located <15 mm and >15 mm from the fundus were 47% and 60%, respectively (P=.6). The clinical intrauterine PRs were 69.5%, 38.5%, and 19.1% in fundal, static, and cervical, respectively. The highest PR was in fundal when compared with others (P<.01). The clinical PR appears to be associated with the embryo flash movement/migration and the PR was dramatically reduced when the embryo migrated from its original position toward the cervix at 60 minutes. CONCLUSION(S): We concluded that clinical PR appears to be associated with the embryo flash movement/migration at 60 minutes after ET and embryo flash movement toward the fundus is associated with higher clinical PRs. Further well-designed randomized controlled trials are required to optimize ET technique in the future.