Corrigendum to “Premature ovarian senescence and a high miscarriage rate impair fertility in women with HCV” [J Hepatol 68 (2018) 33–41]

AbstractObjectivesThe objective of this study is to explore the efficacy and safety of N-acetyl-cysteine (NAC) as adjuvant therapy in female infertility.ContentWe performed a systematic literature search of PubMed, Cochrane Library, Embase, and Ovid databases through April 2019 for Randomized Controlled Trials (RCTs) evaluating the effectiveness and safety of NAC as adjuvant therapy in female infertility. The outcomes assessed were rates of ovulation, pregnancy, miscarriage and multiple pregnancy, presented as pooled odds ratio with 95% confidence interval (CI) using the random-effects model. Heterogeneity and inconsistency of the measurements were identified through Cochrane’s Q statistic and I2 statistic. We also performed a sensitivity analysis, publication bias (using funnel plot and Begg’s test), and subgroup analysis.SummaryFifteen RCTs recruiting 2330 female receiving NAC were included. The pooled estimate showed the statistically insignificant improvement in outcomes; clinical pregnancy rate 1.55 (95% CI 0.98–2.47; I2=68%; p<0.01), ovulation rate 1.77 (95% CI 0.76–4.14; I2=90%; p<0.01), multiple pregnancy rate 0.83 (95% CI 0.34–1.99; I2=10%; p=0.31) and miscarriage rate 0.76 (95% CI= 0.37, 1.53; I2=0%; p=0.69) . NAC was found less efficacious and safe than metformin in all outcomes. Overall, NAC showed statistically insignificant (OR=0.98–2.47).OutlookNAC can be an effective adjuvant in PCOS related and unexplained female infertility. The effect could be more profound in women with high BMI, insulin resistance, and oxidative stress. However, the findings need further confirmation in well-designed randomized controlled trials to examine clinical outcomes such as live birth rate in more extended follow-up periods.

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High-security closed devices are efficient and safe to protect human oocytes from potential risk of viral contamination during vitrification and storage especially in the COVID-19 pandemic

Journal of Assisted Reproduction and Genetics ◽

10.1007/s10815-021-02062-y ◽

2021 ◽

Author(s):

Eleonora Porcu ◽

Maria Lucrezia Tranquillo ◽

Leonardo Notarangelo ◽

Patrizia Maria Ciotti ◽

Nilla Calza ◽

...

Keyword(s):

Research Question ◽

Randomized Study ◽

Implantation Rate ◽

University Hospital ◽

Miscarriage Rate ◽

Human Oocytes ◽

High Security ◽

Group 2 ◽

And Storage ◽

Group 1

Abstract Purpose The main purpose and research question of the study are to compare the efficacy of high-security closed versus open devices for human oocytes’ vitrification. Methods A prospective randomized study was conducted. A total of 737 patients attending the Infertility and IVF Unit at S.Orsola University Hospital (Italy) between October 2015 and April 2020 were randomly assigned to two groups. A total of 368 patients were assigned to group 1 (High-Security Vitrification™ - HSV) and 369 to group 2 (Cryotop® open system). Oocyte survival, fertilization, cleavage, pregnancy, implantation, and miscarriage rate were compared between the two groups. Results No statistically significant differences were observed on survival rate (70.3% vs. 73.3%), fertilization rate (70.8% vs. 74.9%), cleavage rate (90.6% vs. 90.3%), pregnancy/transfer ratio (32.0% vs. 31.8%), implantation rate (19.7% vs. 19.9%), nor miscarriage rates (22.1% vs. 21.5%) between the two groups. Women’s mean age in group 1 (36.18 ± 3.92) and group 2 (35.88 ± 3.88) was not significantly different (P = .297). A total of 4029 oocytes were vitrified (1980 and 2049 in groups 1 and 2 respectively). A total of 2564 were warmed (1469 and 1095 in groups 1 and 2 respectively). A total of 1386 morphologically eligible oocytes were inseminated by intracytoplasmic sperm injection (792 and 594 respectively, P = .304). Conclusions The present study shows that the replacement of the open vitrification system by a closed one has no impact on in vitro and in vivo survival, development, pregnancy and implantation rate. Furthermore, to ensure safety, especially during the current COVID-19 pandemic, the use of the closed device eliminates the potential samples’ contamination during vitrification and storage.

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The effects of the day of trophectoderm biopsy and blastocyst grade on the clinical and neonatal outcomes of preimplantation genetic testing–frozen embryo transfer cycles

Zygote ◽

10.1017/s0967199421000435 ◽

2021 ◽

pp. 1-6

Author(s):

Linjun Chen ◽

Zhenyu Diao ◽

Jie Wang ◽

Zhipeng Xu ◽

Ningyuan Zhang ◽

...

Keyword(s):

Birth Weight ◽

Genetic Testing ◽

Embryo Transfer ◽

Live Birth ◽

Frozen Embryo Transfer ◽

Neonatal Outcomes ◽

Miscarriage Rate ◽

Birth Rates ◽

Preimplantation Genetic Testing ◽

Live Birth Rates

Summary This study analyzed the effects of the day of trophectoderm (TE) biopsy and blastocyst grade on clinical and neonatal outcomes. The results showed that the implantation and live birth rates of day 5 (D5) TE biopsy were significantly higher compared with those of D6 TE biopsy. The miscarriage rate of the former was lower than that of the latter, but there was no statistically significant difference. Higher quality blastocysts can achieve better implantation and live birth rates. Among good quality blastocysts, the implantation and live birth rates of D5 and D6 TE biopsy were not significantly different. Among fair quality and poor quality blastocysts, the implantation and live birth rates of D5 TE biopsy were significantly higher compared with those of D6 TE biopsy. Neither blastocyst grade nor the day of TE biopsy significantly affected the miscarriage rate. Neonatal outcomes, including newborn sex, gestational age, preterm birth, birth weight and low birth weight in the D5 and D6 TE biopsies were not significantly different. Both blastocyst grade and the day of TE biopsy must be considered at the same time when performing preimplantation genetic testing–frozen embryo transfer.

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P–131 Significance of the phenomenon of blastomere exclusion from compaction: Its relation to irregular cleavage, blastocyst development rate, and pregnancy rate

Human Reproduction ◽

10.1093/humrep/deab130.130 ◽

2021 ◽

Vol 36 (Supplement_1) ◽

Author(s):

S Watanabe ◽

M Tomida ◽

S Suzuki ◽

Y Matsuda ◽

K Yoshikai ◽

...

Keyword(s):

Pregnancy Rate ◽

Chromosome Analysis ◽

Development Rate ◽

Pregnancy Rates ◽

Blastocyst Transfer ◽

Blastocyst Development ◽

Miscarriage Rate ◽

Single Blastocyst Transfer ◽

Significant Difference ◽

Irregular Cleavage

Abstract Study question When does blastomere exclusion from compaction increase and what effect does it have on the embryo? Summary answer More blastomere were excluded from compaction in embryos with irregular cleavage, resulting in lower blastocyst development rates, but no decrease in pregnancy rates at transfer. What is known already It has been reported that many of the chromosome analysis results of blastomere excluded from compaction were aneuploid, and pointed out that this exclusion may be related to the repair of blastocyst euploidy, but the effect of the number of excluded blastomere has not been reported. Study design, size, duration This is a retrospective study of 578 embryos that developed into morula with time-lapse monitoring by EmbryoScope (Vitrolife) in 2018–2019. Participants/materials, setting, methods The target embryos were classified into two groups: embryos with normal first and second cleavage (normal cleavage group) and embryos with irregular cleavage (dynamics of one cell dividing into three or more cells), called “direct cleavage”, at either cleavage (DC group), and the number of blastomere excluded from compaction during morula formation was recorded and compared. The blastocyst development rate and single blastocyst transfer pregnancy rates of the two groups were compared. Main results and the role of chance There are 286 in the normal cleavage group and 292 in the DC group. The mean number of excluded blastomere was 0.76 and 3.55, respectively, which was significantly higher in the DC group (P < 0.01). Good blastocyst (Gardner classification 4 or higher) development rate was 84.5% (239/283) and 65.8% (181/275), respectively, and high grade blastocyst (Gardner classification BB or higher) development rate was 43.9% (105/239) and 14.9% (27/181) of them, both significantly higher in the normal cleavage group (P < 0.01). The single blastocyst transfer pregnancy rates were 31.6% (25/79) and 32.4% (11/34), and the miscarriage rates were 24.0% (6/25) and 27.3% (3/11), respectively, neither was there a significant difference between the two groups. So, direct cleavage increased the number of blastomere excluded from compaction, decreased the rate of morula to good blastocyst development and reduced blastocyst grade, but did not affect blastocyst transfer pregnancy rate and miscarriage rate. Limitations, reasons for caution Please note that all target embryos must have developed into morula or larger (embryos that did not develop into morula will not be included in the study). Wider implications of the findings: Severe chromosomal aberrant blastomeres formed by direct cleavage were excluded from compaction, and the blastocyst development rate decreased due to a decrease in the amount of viable cells, but it is suggested that this blastomere exclusion mechanism is not related to euploidy after blastocyst development. Trial registration number Not applicable

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Pregnancy Outcome after Cerclage for Cervical Incompetence at a Private Hospital of Dhaka

Faridpur Medical College Journal ◽

10.3329/fmcj.v12i2.34234 ◽

2017 ◽

Vol 12 (2) ◽

pp. 78-81

Author(s):

Shafeya Khanam ◽

Maliha Rashid ◽

Ayesha Siddika Purobi ◽

Zebunnessa Parvin ◽

Sanjoy Kumar Das ◽

...

Keyword(s):

Birth Weight ◽

Preterm Birth ◽

Low Birth Weight ◽

Fetal Loss ◽

Cervical Dilatation ◽

Cervical Insufficiency ◽

Miscarriage Rate ◽

Cervical Cerclage ◽

Cervical Incompetence ◽

Obstetric Population

Miscarriage, particularly recurrent mid-trimester miscarriage is a distressful condition. This form of miscarriage and preterm birth appear to have some etiologies. An important etiology is cervical incompetence that describes a disorder in which painless cervical dilatation leads to recurrent second trimester pregnancy losses. Every year more than 10 million preterm birth occurs and more than 1 million baby die from this common complication of pregnancy. The incidence of true cervical insufficiency is estimated at less than 1% of the obstetric population. In the index pregnancy, findings indicative of possible cervical insufficiency include cervical funneling, cervical shortening, and overt cervical dilatation. The main objective of the study was to explore the benefit from cervical cerclage in pregnant women with cervical incompetence. This is a retrospective observational study conducted over a period of twelve months. All cases delivered in Central Hospital were assisted by consultant obstetricians, in which 16(61.5%) out of 26 cases were delivered by caesarean section. Miscarriage rate was 11.53%. Out of the caesarean deliveries 2(12.5%) were at term and 14(87.5%) were at preterm. In this study 3(21.42%) babies born at 32nd and 33rd weeks, 6(42.85%) at 34th week and 2(14.28%) were at 35th week. There was no fetal loss. Extreme low birth weight was only one, 7(43.75%) of the babies had normal body weight for the area of study, 8 babies (50%) had low birth weight. The cervical cerclage procedure therefore should be available more widely to benefit those patients with proven or strongly suspected cervical incompetence.Faridpur Med. Coll. J. Jul 2017;12(2): 78-81

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Increased Miscarriage Rate in Thyroid Antibody Negative Women with TSH Levels between 2.5-5.0 in the First Trimester of Pregnancy.

10.1210/endo-meetings.2010.part3.or2.or37-4 ◽

2010 ◽

pp. OR37-4-OR37-4

Author(s):

Roberto Negro ◽

Alan Schwartz ◽

Riccardo Gismondi ◽

Andrea Tinelli ◽

Tiziana Mangieri ◽

...

Keyword(s):

First Trimester ◽

Miscarriage Rate ◽

Thyroid Antibody ◽

First Trimester Of Pregnancy ◽

Tsh Levels

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INFLUENCE ON THE OUTCOME OF ART PROGRAMS OF FROZEN-THAWED BLASTOCYSTS EXPANDED ON FIVE OR SIX DAY

Reproductive Medicine ◽

10.37800/rm2021-2-7 ◽

2021 ◽

pp. 68-75

Author(s):

A.O. Polumiskova ◽

S.I. Tevkin ◽

T.M. Jussubaliyeva ◽

M.S. Shishimorova

Keyword(s):

Pregnancy Rate ◽

Assisted Reproductive Technologies ◽

Reproductive Technologies ◽

Clinical Pregnancy ◽

Clinical Pregnancy Rate ◽

Miscarriage Rate ◽

Art Programs ◽

Group A ◽

The Difference ◽

Group B

In order to increase the effectiveness of assisted reproductive technologies (ART) programs, it is essential to improve and develop conditions of embryo culture prior its transfer or cryopreservation of expanded blastocysts on the day 5 or 6. The aim of the study was to assess the effect of human blastocysts’ expansion timing on clinical pregnancy rate (CPR), miscarriage rate (MR) and take-home baby rate (THBR) in frozen-thawed cycles during ART programs. The study involved 2275 frozen embryo transfers (FET) of blastocysts expanded on the day 5 (group A) and 170 FET of blastocysts expanded on the day 6 (group B). The pregnancy rates in both groups were 50.8% and 46.5% respectively. There were no statistically significant differences in clinical pregnancy rate 37.4% and 37.0%, miscarriage rate 26.0% and 21.5% in both groups, respectively. THBR, as the main indicator of efficiency in the programs with transfer of post thawed expanded blastocysts on the day 5 (group A) or 6 (group B) were 36.5% and 35.2%, respectively (the difference is insignificant). In conclusion, in cryoprotocols the day of blastocyst expansion (day 5 or 6 of development) does not statistically affect PR, MR and THBR. In FET programs the quality of blastocyst (excellent and good) should be prioritized regardless of the day of cryopreservation.

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