The role of microbiota in the pathophysiology of uterine fibroids - a systematic review

For a long time, the uterus had been considered a sterile organ, meaning that under physiological conditions the uterus would not be colonized by bacteria. Based on available data, it may be concluded that the gut and uterine microbiome are related, and that the role of this microbiome is greater than expected. Despite being the most common pelvic neoplasms in women of reproductive age, uterine fibroids (UFs) are still poorly understood tumors whose etiology has not been fully determined. This systematic review presents the relationship between intestinal and uterine dysbiosis and uterine fibroids. A systematic review of three medical databases was carried out: the MEDLINE/PubMed, Scopus and Cochrane. In this study, 195 titles and abstracts were reviewed, including only original articles and clinical trials of uterine microbiome criteria. Finally, 16 studies were included to the analysis. In recent years, researchers dealing with reproduction in a broad sense have focused on the microbiome in various locations to study its role in the pathogenesis and, consequently, the prevention and treatment of diseases of the genital organ. Conventional microbial detection methods are not suitable for identifying bacteria, which are difficult to culture. Next-generation sequencing (NGS) provides an easier and faster and more informative analysis of bacterial populations. It seems that gut microbiota dysbiosis has the potential to be a risk factor for uterine fibroids or affect the disease process. Some changes were shown in many types of bacteria, such as Firmicutes, Proteobacteria, Actinobacteria and Verrucomicrobia detected in fecal samples in patients with uterine fibroids. In view of the few results on the link between the microbiome and uterine fibroids, further intensive studies in humans and animal models are necessary, including the possible use of different microbiome modulations in the prevention or treatment of uterine fibroids.

Biomarkers for Pregnancy Latency Prediction after Preterm Premature Rupture of Membranes-A Systematic Review

Preterm premature rupture of membranes, leading to preterm birth, is associated with neonatal and maternal morbidity and mortality. The study aimed to review the existing data on the best predictive value of pregnancy latency for known biomarkers in pregnancies after preterm premature rupture of membranes. The following databases were screened for the purposes of this systematic review: Pubmed/MEDLINE, Web of Science, EMBASE, Scopus, and the Cochrane Library. The study was conducted according to the PRISMA guidelines for systematic reviews. Only a few studies assessed biomarkers predicting pregnancy duration after PPROM. IL-6, IL-8, CRP, IL1RA, s-endoglin, βhCG, AFP, PCT, urea, creatinine, oxygen radical absorbance capacity, MDA, lipocalin-2, endotoxin activity, MMP-8, MMP-9 and S100 A8/A9 were found to have a positive predictive value for delivery timing prediction. Proinflammatory biomarkers, such as IL-6 or CRP, proved to be best correlated with delivery timing, independent of the occurrence of intrauterine infection.

Maternal thyroid function in multiple pregnancies - a systematic review

BACKGROUND

The function of the thyroid gland during pregnancy undergoes physiological changes to ensure the proper amount of thyroid hormones for both the pregnant woman and the fetus. Multiple pregnancies (MP) are characterized by specific differences compared to single pregnancies, e.g., higher concentrations of human chorionic gonadotropin, which also affect thyroid function. The aim was to collect available knowledge on maternal thyroid function in MP.

METHODS

We have systematically searched three databases: the PubMed/MEDLINE, Scopus and the Cochrane Library. The last search was run on the 4th of August 2022. We included full-text original observational and experimental studies written in English. Case reports, editorials, letters, conference abstracts, reviews and meta-analyses were excluded. No time criterion was established. Studies were considered eligible if at least one maternal thyroid function test was performed and reported. Studies on MP with a co-existing mole were excluded. The risk of bias was assessed with the use of the AXIS tool. The qualitative synthesis of evidence was applied.

RESULTS

The search strategy resulted in the identification of 821 manuscripts. After removing duplicates, we screened the titles and abstracts of 552 articles, out of which 57 were selected for full-text analysis. Finally, 12 articles were included in the review. They were conducted in 6 different countries and published between the years 1997 and 2022. The number of examined women with MP ranged from 9 to 1 626.

DISCUSSION AND CONCLUSIONS

Thyroid function differs between women with MP and SP. Scarce data are available on the topic, but MPs are most likely characterized by higher HCG levels, which influences thyroid-stimulating hormone and free thyroid hormone levels. These differences are mainly expressed in the 1st trimester of pregnancy. Separate population-based reference ranges are needed to correctly diagnose thyroid diseases in MP and to avoid unnecessary treatment. Further research is needed to fill the knowledge gaps.

The association between imbalances in vaginal microflora and duration of pregnancy as well as selected maternal and neonatal parameters

OBJECTIVES

Abnormal vaginal flora (AVF) is a result of excessive growth of some aerobic bacteria and fungi in relation to the scarce presence of Lactobacillus spp. It has been suggested that AVF is responsible for preterm birth and such neonatal conditions as infections or sepsis. The aim of the study was to assess the influence of excessive vaginal colonization with aerobic bacteria and fungi on the selected postnatal parameters of newborns, duration of pregnancy and length of hospitalisation of neonates.

MATERIAL AND METHODS

Retrospective data of all 1057 patients who delivered between 01.2019 and 06.2019 in the Department of Perinatology of Medical University of Lodz was analyzed. Eight hundred nine patients were included in this retrospective study. The study group consisted of 396 patients with abundant growth of aerobic bacteria and fungi obtained between 26 and 42 weeks of gestation, while 413 patients with physiologic vaginal biocenosis constituted the control group. Two hundred forty-eight patients (23.46%) were excluded from the study due to incomplete data.

RESULTS

Patients with abnormal vaginal flora (AVF) gave birth prematurely (9.09%) more often than patients with balanced microflora (5.31%), p = 0.038. Newborns of mothers with AVF obtained an Apgar score under four more frequently (1.21% vs 0%; p = 0.024). Eutrophic neonates were born less frequently in the study group (82.08% vs 88.65%; p = 0.025). Hospitalisation period was longer for children of mothers with AVF (mean of 6.30 ± 9.87 days) than those of mothers from the control group (mean of 5.06 ± 5.30), p = 0.025. Newborns of mothers with AVF developed perinatal infections more often (23.97% vs 15.94%; p = 0.004). Four infants died in the study group whereas no deaths were recorded in the control group (p = 0.045). The most prevalent pathogens were: Streptococcus agalactiae (GBS) 57.32%, Candida spp. 39.64%, Klebsiella spp. 9.85%, Staphylococcus aureus 7.32%. Signs of infection were more frequently recorded in newborns of mothers infected with Klebsiella spp. (35.90% vs 19.16%; p = 0.011). Premature birth was more prevalent in GBS carriers (11.81% vs 6.28%; p = 0.022).

CONCLUSIONS

Abundant growth of aerobic bacteria in the 3rd trimester of gestation contributes to preterm birth, causes the development of infection signs in newborns, increases their mortality rate and prolongs hospitalisation period.

Micronutrients in Multiple Pregnancies-The Knowns and Unknowns: A Systematic Review

Maternal diet and nutritional status are of key importance with regard to the short- and long-term health outcomes of both the mother and the fetus. Multiple pregnancies are a special phenomenon in the context of nutrition. The presence of more than one fetus may lead to increased metabolic requirements and a faster depletion of maternal macro- and micro- nutrient reserves than in a singleton pregnancy. The aim of this systematic review was to gather available knowledge on the supply and needs of mothers with multiple pregnancies in terms of micronutrients and the epidemiology of deficiencies in that population. It was constructed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement (PRISMA). The authors conducted a systematic literature search with the use of three databases: PubMed/MEDLINE, Scopus and Embase. The last search was run on the 18 October 2020 and identified 1379 articles. Finally, 12 articles and 1 series of publications met the inclusion criteria. Based on the retrieved studies, it may be concluded that women with multiple pregnancies might be at risk of vitamin D and iron deficiencies. With regard to other microelements, the evidence is either inconsistent, scarce or absent. Further in-depth prospective and population studies are necessary to determine if nutritional recommendations addressed to pregnant women require adjustments in cases of multiple gestations.

Biomarkers of angiogenesis in twin gestations and the risk of preeclampsia - review of the current literature

Twin pregnancy is one of the key risk factors for the development of preeclampsia. Soluble fms-like tyrosine kinase-1, placental growth factor, and soluble endoglin are molecules involved in the process of angiogenesis with a proven role in the pathogenesis of preeclampsia. The aim of the review was to summarize available data on maternal serum levels of the biomarkers of angiogenesis and their usefulness in predicting preeclampsia in twin pregnancies. Most of available data suggest biomarkers concentrations differ between singleton and twin gestation and are related to chorionicity of twin pregnancy. Several algorithms including biomarkers of angiogenesis in prediction of PE in twin pregnancy are available and seem promising, however more large prospective surveys are necessary to assess their usefulness in general clinic use.

Impact of childbirth on women's sexuality in the first year after the delivery

AIM

The aim was to compare the quality of sexual life before pregnancy and after delivery and to find out whether and how selected factors affect women's sexuality during this period.

METHODS

The study group consisted of 433 women who completed the survey containing basic demographic questions and two Female Sexual Function Index (FSFI) questionnaires: a retrospective one, regarding time before pregnancy and the current period. The inclusion criteria: time between 10 weeks and 1 year after delivery, vaginal intercourses before pregnancy and the resumption of vaginal intercourses after delivery.

RESULTS

We observed the negative impact of labor on the total FSFI score, regardless of the time that had passed since birth and the delivery mode. The decrease by at least 10% of the initial FSFI score was noticed in 44.3% of the participants. FSD (Female Sexual Dysfunction) occurred statistically more commonly after delivery than before pregnancy (45.3% vs 17.1%; P < 0.001). The following factors had an impact on the risk of post-partum FSD: pre-pregnancy FSD (adjusted odds ratio [aOR] = 4.17 [95% confidence interval [CI] 2.38-7.31]) and nulliparity (aOR = 1.67 [95% CI 1.09-2.53]).

CONCLUSION

Childbirth has an undeniable impact on women's sexuality. The prevention and treatment of sexual dysfunctions is very important, especially in this crucial period of life.

Levonorgestrel-Releasing Intrauterine System as a Contraceptive Method in Nulliparous Women: A Systematic Review

The aim of this review was to summarize the available evidence about the use of levonorgestrel-releasing intrauterine system (LNG-IUS) as a contraceptive method in nulliparous women. For this purpose, studies evaluating the efficacy, safety, bleeding pattern, satisfaction and discontinuation of the levonorgestrel-releasing intrauterine system in nulliparous women were analyzed. Only original research articles published in English between 1990–27th March 2020 were considered eligible. Reviews, book chapters, case studies, conference papers, opinions, editorials and letters were excluded. The systematic literature search of PubMed/MEDLINE, Scopus, Embase and Cochrane Library databases identified 816 articles, 23 of which were analyzed. The available evidence indicates that LNG-IUS is an effective and safe contraceptive method for nulliparous women that achieves high levels of satisfaction among patients. Moreover, nulliparous women seem to experience fewer expulsions than parous ones. Bleeding pattern is acceptable for the majority of patients, and bleeding disorders mainly occur in the first months after the insertion. More in-depth, long-term prospective studies are needed in this patient group to determine risk factors for the occurrence of side effects and associated discontinuations, which should not, however, delay the wider use of the method in this group, given the number of advantages.

Psychiatric disorders and changes in immune response in labor and postpartum

Women may present with psychiatric disorders during pregnancy, normal labor, following delivery by caesarean section, or in the postpartum period. The accumulating evidence suggests that these disorders may be due to changes in immune responses. During pregnancy complications such as the prolongation of cervical ripening or descent, placental abruption, premature labor, and preeclampsia increase the risk of postpartum psychiatric disorders. Women may exhibit depression and postpartum psychosis following either normal birth or caesarean section. Since psychiatric disorders like schizophrenia, major depression, and bipolar disorder are associated with both alterations in the immune response and changes in immune cell subpopulations, in this study we have chosen to examine whether the psychiatric disorders in women during labor or postpartum also lead to aberrant immune responses.

Maternal Serum Placental Growth Factor, Soluble Fms-Like Tyrosine Kinase-1, and Soluble Endoglin in Twin Gestations and the Risk of Preeclampsia-A Systematic Review

Multiple gestation is one of the key risk factors for the occurrence of preeclampsia (PE). Soluble fms-like tyrosine kinase-1, placental growth factor, and soluble endoglin are molecules involved in the process of angiogenesis with a proven role in the pathogenesis of PE. The aim of the review was to summarize available data on maternal serum levels of the above-mentioned factors and their usefulness in predicting PE in twin pregnancies. Only original research articles written in English were considered eligible. Reviews, chapters, case studies, conference papers, experts’ opinions, editorials, and letters were excluded from the analysis. No publication date limitations were imposed. The systematic literature search using PubMed/MEDLINE, Scopus, Embase, and Cochrane Library databases identified 338 articles, 10 of which were included in the final qualitative analyses. The included studies showed significant differences in maternal serum levels of the discussed factors between women with twin pregnancies with PE and those who did not develop PE, and their promising performance in predicting PE, alone or in combination with other factors. The identification of the most effective algorithms, their prompt introduction to the clinical practice, and further assessment of the real-life performance should become a priority.

Post-zygotic diploidization of triploidy in human is possible? - a case of triploid partial molar pregnancy resulting in a premature live-born diploid female infant

OBJECTIVE

During the treatment of our patient we found that reports covering possible complications and their treatment are very scarce. Due to advancement in ultrasound diagnosis most of molar pregnancies are terminated in first trimester of pregnancy. There is the gap in knowledge concerning pregnancy complications in case of partial mole discovered in advanced pregnancy. This is why we incorporated extensive and up-to-date review of literature in our manuscript.

METHOD

We described a case of previously healthy, 25 year old primigravida who delivered live daughter at 27 weeks of gestation, complicated with unusual ultrasound appearance of the placenta, severe hypotrophy, and subsequent post-partum eclampsia.

RESULTS

Healthy diploid female infant, now two years old and healthy mother taking care of her.

CONCLUSIONS

In clinical practice early diagnosis of this complication usually lead to pregnancy termination. In modern medicine, decisions should be based on evidence and patient-doctor mutual understanding. Termination of pregnancy with suspicion of molar placenta can be specially difficult in gestation in older nulliparous women or after ART. We sincerely hope that this report will be useful for physicians across the world in counseling and treating their patients.

The efficacy of misoprostol in the first trimester miscarriage treatment - an individual patients' data analysis

INTRODUCTION

The study aimed to detect factors predicting a successful pharmacological induction of first-trimester miscarriage.

MATERIAL AND METHODS

A prospective, cohort research was conducted at the 1st Department of Obstetrics and Gynecology, Medical University of Warsaw, between years 2011-2015. 642 women diagnosed with first trimester miscarriage qualified for pharmacological induction with misoprostol were included in the study. Each patient underwent repeatable doses of 800mcg misoprostol vaginally. The endpoint was complete excretion of all tissues, with no need to perform surgical curettage. Type of miscarriage, gravidity, parity, number of doses, time of drug administration and side effects were analysed as possible factors influencing the results. The statistical analysis was performed with STATISTICA 10.0 software.

RESULTS

The percentage of successful miscarriage induction was 83.6%. Two main factors corresponded with successful pharmacological treatment in regression analysis: number of administered doses (adjusted OR 1.64; 95% CI 1.18-2.29) and week of gestation (aOR 1.22; 95%CI 1.03-1.44). The success of the pharmacological induction of miscarriage was significantly decreased if the woman had a history of caesarean section (aOR 0.34; 95% CI 0.2-0.57). 2.2% of patients experienced benign side effects of the therapy.

CONCLUSIONS

Pharmacological induction is an effective and safe treatment method of first trimester abortion in the majority of cases. The knowledge of factors influencing the efficacy of misoprostol may help clinicians in proper counselling and individualisation of therapy.

Contraceptive Behaviors in Polish Women Aged 18-35-a Cross-Sectional Study

The aim was to evaluate contraceptive behaviors, and factors affecting them, in the population of Polish-speaking women. A cross-sectional study was performed on 6763 women, current contraceptive users, aged 18 to 35. An anonymous and voluntary questionnaire written in Polish, containing 33 questions, was distributed online from January to February 2017. The Internet and doctors were the most popular sources of information about contraception (82% and 73%, respectively). Upon choosing contraception, women paid the most attention to its efficacy (85%) and its impact on health (59%). The most common methods were combined oral contraceptives (38%) and condoms (24%). In total, 51% had chosen hormonal contraception, of which 68% experienced side effects. The most frequent were decreased libido (39%) and weight gain (22%). Factors associated with the usage of hormonal or non-hormonal contraception were: education, relationship status, parenthood, number of sexual partners, frequency of intercourses, sources of information about contraception, and factors considered most important when choosing a contraceptive method. The choice between short-acting and long-acting reversible contraception was influenced by age, relationship status, parenthood, smoking, sources of information about contraception, and factors considered most important when choosing a contraceptive method. Wide access to contraception, high-quality education, and counselling should become priorities in family planning healthcare.