Dehydroepiandrosterone modulates the PTEN/PI3K/AKT signaling pathway to alleviate 4-vinylcyclohexene diepoxide-induced premature ovarian insufficiency in rats.

Dehydroepiandrosterone (DHEA) is frequently integrated as an adjuvant in over a quarter of controlled ovarian hyperstimulation (COH) protocols, despite the ongoing debate regarding its impact. This study aimed to evaluate the efficacy and mechanism of action of DHEA on ovarian follicular development and ovarian response in rats with varying ovarian reserves. The study involved 75 rats categorized into 15 distinct groups.

Do we overlook predictive factors in Poseidon 1 patients? A retrospective analysis co-evaluating antral follicle counts & diameters.

Background: An unexpected impaired ovarian response pertains to an insufficient reaction to controlled ovarian hyperstimulation. This deficient reaction is identified by a reduced count of mature follicles and retrieved oocytes during an IVF cycle, potentially diminishing the likelihood of a successful pregnancy. This research seeks to examine whether the characteristics of antral follicles can serve as predictive indicators for the unexpected impaired ovarian response to controlled ovarian stimulation (COS).

Reliability of hypo-osmotic swelling test on fresh and frozen-thawed ejaculated or testicular immotile sperm: A sibling oocyte study.

The viability of sperm is a crucial factor for achieving a successful pregnancy in intracytoplasmic sperm injection (ICSI) cycles. The aim of this study was to evaluate the accuracy of the hypo-osmotic swelling test (HOST) in fresh and frozen-thawed sperm samples of different origins (ejaculated/testicular). A retrospective analysis was conducted on the outcomes of 2167 oocytes subjected to ICSI using motile and immotile-HOST-positive sperm from 2011 to 2023.

Comparison of semen parameters in the same patients before and after diagnosis of COVID-19.

Clinical and histopathological evidence suggest that the male reproductive system may be negatively impacted in patients with coronavirus disease (COVID-19). The objective of this study is to investigate the effect of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on semen parameters by comparing semen analyses before and after COVID-19 diagnosis in the same patient. We retrospectively analyzed 342 semen analyses by reviewing medical records.

Low Molecular Weight Heparin-Aspirin-Prednisolone Combination Does Not Increase the Live Birth Rate in Recurrent Implantation Failure: A Retrospective Cohort Study.

This study investigates the triple combination of adjuvants (low molecular weight heparin (LMWH)-aspirin-prednisolone) whether it improves the live birth rates of IVF&ICSI patients with previous implantation failure. This retrospective study included 1095 patients with >2 failed either fresh or frozen single embryo transfer cycles between 2014 Jan and 2021 Jan. Patients were divided into two subgroups.

The Kisspeptin and Kisspeptin receptor in follicular microenvironment: is that really necessary for oocyte maturation and fertilisation?

The aim of this study was to determine whether Kisspeptin and Kisspeptin receptor in the follicular microenvironment is necessary for human oocyte maturation and fertilisation. The cumulus cell (CC) and follicle fluids (FF) obtained from the first aspirated follicles ( = 52) from 32 patients were divided into three groups considering nuclear maturation and fertilisation results of oocytes: (1) Metaphase I or germinal vesicle stage oocytes (incomplete nuclear maturation,  = 10), (2) unfertilised metaphase II oocytes (incomplete cytoplasmic maturation,  = 16), and (3) fertilised metaphase II oocytes (completed nuclear-cytoplasmic maturation,  = 26). The gene expression levels were assessed by RT-PCR.

Which is more predictive ovarian sensitivity marker if there is discordance between serum anti-Müllerian hormone levels and antral follicle count? A retrospective analysis.

This retrospective study aims to determine the more predictive ovarian reserve marker when there is discordance between anti-Müllerian hormone (AMH) and antral follicle count (AFC) in patients with diminished ovarian reserve (DOR). Patients who underwent ICSI because of DOR were divided into three groups. Group 1: patients with low AMH (<1.

Supernumerary embryos, do they show the cycle success in a fresh embryo transfer? A retrospective analysis.

Objective: To determine the predictive value of cryopreserved embryos during single fresh blastocyst transfer.

Methods: This retrospective cohort study was conducted at a tertiary university hospital ART center. Patients who underwent a single fresh blastocyst transfer were selected from the electronic database.

Are all antral follicles the same? Size of antral follicles as a key predictor for response to controlled ovarian stimulation.

The aim of this study was to evaluate whether antral follicle size has any value with respect to antral follicle count (AFC) in predicting ovarian response to controlled ovarian stimulation. Patients who were considered to be normal responders based on their ovarian reserve markers were consecutively recruited. Total AFC was the number of 2-10 mm follicles in both ovaries.

Fertilisation and early embryonic development of immature and rescue in vitro-matured sibling oocytes.

The objective of this study was to assess the effect of rescue in vitro maturation and immediate intracytoplasmic sperm injection (ICSI) application on fertilisation success and early embryonic development of metaphase I (MI) oocytes. This was a retrospective cohort study including 2425 sibling oocytes in 259 ICSI cycles. ICSI was performed on 104 GV (germinal vesicle) oocytes which had reached the metaphase II (MII) stage (Group 1) and 231 MI oocytes which had reached the MII stage (Group 2) following IVM (in vitro maturation).

Luteal oestradiol for patients with serum oestradiol levels lower than expected per oocyte.

Although the efficiency of progesterone in providing luteal phase support has been established, the role of oestradiol supplementation during the luteal phase remains controversial. We evaluated pregnancy outcomes of patients who had a ratio of serum E2 levels on the hCG day to the number of oocytes retrieved (oestradiol/oocyte ratio - EOR) levels of <100 pg/ml by supporting them with additional oestradiol during the luteal phase. In total, 150 patients with an EOR < 100 pg/ml of oestradiol undergoing antagonist intracytoplasmic sperm injection (ICSI) cycles were randomly assigned into two groups to receive either oral oestradiol (4 mg/d) plus vaginal progesterone (90 mg, 2 × 1/day) (group 1) or vaginal progesterone (90 mg, 2 × 1/d) alone (group 2).

What is the effect of embryo morphology on serum β-hCG levels?

Objective: To determine the effect of embryonic factors on serum beta human chorionic gonadotropin (β-hCG) levels in pregnancy and live birth resulting after a single fresh cleavage embryo and blastocyst transfer.

Study Design: This was a retrospective cohort study conducted at a tertiary care hospital. All fresh single embryo transfers (sETs) between September 2011 and December 2016 were included.

A comparison of the survival and implantation rates of blastocysts that were vitrified on post-fertilization day five, six and seven.

The goal of this retrospective cohort study was to compare survival, implantation, clinical and ongoing pregnancy rates between blastocysts that were vitrified on post-fertilization days 5, 6 and 7. Before vitrification, blastocysts were evaluated in terms of morphology and blastocyst expansion, inner cell mass and trophectoderm quality. They were thawed and transfered in a subsequent artificial cycle.

Detrimental effects of endometriosis on oocyte morphology in intracytoplasmic sperm injection cycles: a retrospective cohort study.

While an association can be addressed among endometriosis and subfertility, the causal relationship has not been elucidated yet. Impaired oocyte quality in endometriosis patients has been accused for the unsuccessful outcomes of assisted reproductive techniques. There are limited studies in literature evaluated association between endometriosis and oocyte morphology.

Which is worse? Comparison of ART outcome between women with primary or recurrent endometriomas.

Study Questi̇on: Are live birth rates (LBR) different after ART cycles between women with primary or recurrent endometrioma?

Summary Answer: Women with recurrent endometrioma have similar LBR as compared to patients with primary endometrioma.

What Is Already Known: Recurrence rate can be as high as 29% after endometrioma excision. Prior studies on management of endometrioma before ART involve primary endometriomas.

Does pituitary suppression affect live birth rate in women with congenital hypogonadotrophic hypogonadism undergoing intra-cytoplasmic sperm injection? A multicenter cohort study.

In this retrospective multicenter cohort study, women with congenital hypogonadotrophic hypogonadism (CHH) (n = 57) who underwent intra-cytoplasmic sperm injection in-between 2010-2014 were compared to age-matched controls with tubal factor infertility (n = 114) to assess ovarian stimulation cycle and pregnancy outcomes. Live birth rates (LBRs) per started cycle were 31.6 and 24.

Scheduling GnRH antagonist cycles by a short course of oral estradiol administration during early follicular phase: a comparative study with non-scheduled cycles.

This hypothesis generating study investigated whether GnRH antagonist cycles can be scheduled by a short course of oral estradiol administration during the follicular phase without impairing treatment outcome. Thirty-five women who underwent follicular phase estrogen scheduling (ES) of GnRH antagonist cycles were retrospectively matched for age and number of prior failed cycles with 35 women who underwent unscheduled GnRH antagonist cycles. ES group was given 6 mg/day estradiol orally from cycle day 2 until (including) one day before the scheduled start of stimulation.

Effective inhibition of cardiomyocyte apoptosis through the combination of trimetazidine and N-acetylcysteine in a rat model of myocardial ischemia and reperfusion injury.

Objective: Apoptosis is the early and predominant form of cell death in infarcted myocardia. The aim of the study was to investigate the effects of trimetazidine (TMZ) and N-acetylcysteine (NAC), used alone or in combination, on oxidative stress, infarct size, and ischemia-reperfusion (IR)-induced cardiomyocyte apoptosis in a rat model of myocardial IR.

Methods And Results: Myocardial IR was established by ligating an area under the left main coronary artery for 30 min followed by 3 h of reperfusion.

Effect of repeatedly given CDP-choline on cardiovascular and tissue injury in spinal shock conditions: investigation of the acute phase.

Objectives: The protective effect of CDP-choline in spinal cord transection and the mediation of its cardiovascular effects were investigated.

Methods: Spinal cords of rats were transected at the T1-T2 levels. CDP-choline (250 mg/kg; intravenous) was administered 2 h and/or 24 h after the injury.

Comparative evaluation of apoptotic activity in photoreceptor cells after intravitreal injection of bevacizumab and pegaptanib sodium in rabbits.

Purpose: To evaluate quantitatively the apoptotic activity after intravitreal injections of pegaptanib sodium and bevacizumab in the rabbit retina.

Methods: Different doses of bevacizumab (0.25, 0.

Preclinical safety evaluation of intravitreal injection of full-length humanized vascular endothelial growth factor antibody in rabbit eyes.

Purpose: To evaluate the preclinical safety of intravitreal bevacizumab, which is a full-length humanized monoclonal antibody against the vascular endothelial growth factor (VEGF), in rabbit eyes over a short-term period.

Methods: Twenty-four rabbits were divided into two groups, each with two subgroups. The first group (groups 1 and 2) received 1.

The effects of caspofungin and voriconazole in experimental Candida endophthalmitis.

Purpose: To evaluate the efficacy of newly developed antifungal agents caspofungin and voriconazole in Candida albicans endophthalmitis in rabbit eyes.

Methods: Thirty New Zealand white rabbits were divided into four treatment groups and one control group. One eye of each rabbit was infected by inoculation of 1 x 10(4) CFU/ml of C.

Dilute triamcinolone-assisted peeling of the internal limiting membrane in cases of diffuse diabetic macular oedema.

Purpose: In this study we evaluated the efficiency of diluted triamcinolone particles in peeling of the internal limiting membrane (ILM) in cases of diffuse diabetic macular oedema.

Methods: A prospective observational study of thirteen consecutive patients with diffuse diabetic macular oedema who had undergone ILM peeling aided by use of a diluted (1 mg mL(-1)) suspension of triamcinolone particles (0.05 mg).