The Impact of Gender on Mid-Career Labour Income: The Case of Bulgaria

The impact assessment of education and gender on mid-career labour income in a transitional economy could provide for better understanding of the influence of the labour market dynamics over individuals with different characteristics. Here, we attempt to find an answer to the question: How education and gender determine mid-career labour income? We estimate the returns to education depending on gender using Mincerian equations and regressions. The data set we use is from the Structure of Earnings Survey conducted by the National Statistical Institute in 2002 and 2006. The analysis covers over 130,000 employees between 35 and 49 years old. The impact assessment allows conclusions about the wage gap between men and women, working in different economic sectors incl. the division of public and private sector, services and industry. The access to managerial position and gender differences in the type of the labour contract have been investigated for their contribution to the persistence of a gender pay gap among the individuals with a tertiary education

The Impact of Gender on Mid-Career Labour Income: The Case of Bulgaria

The impact assessment of education and gender on mid-career labour income in a transitional economy could provide for better understanding of the influence of the labour market dynamics over individuals with different characteristics. Here, we attempt to find an answer to the question: How education and gender determine mid-career labour income? We estimate the returns to education depending on gender using Mincerian equations and regressions. The data set we use is from the Structure of Earnings Survey conducted by the National Statistical Institute in 2002 and 2006. The analysis covers over 130,000 employees between 35 and 49 years old. The impact assessment allows conclusions about the wage gap between men and women, working in different economic sectors incl. the division of public and private sector, services and industry. The access to managerial position and gender differences in the type of the labour contract have been investigated for their contribution to the persistence of a gender pay gap among the individuals with a tertiary education

The Impact of Gender on Mid-Career Labour Income: The Case of Bulgaria

The impact assessment of education and gender on mid-career labour income in a transitional economy could provide for better understanding of the influence of the labour market dynamics over individuals with different characteristics. Here, we attempt to find an answer to the question: How education and gender determine mid-career labour income? We estimate the returns to education depending on gender using Mincerian equations and regressions. The data set we use is from the Structure of Earnings Survey conducted by the National Statistical Institute in 2002 and 2006. The analysis covers over 130,000 employees between 35 and 49 years old. The impact assessment allows conclusions about the wage gap between men and women, working in different economic sectors incl. the division of public and private sector, services and industry. The access to managerial position and gender differences in the type of the labour contract have been investigated for their contribution to the persistence of a gender pay gap among the individuals with a tertiary education

Pathomorphological Diagnostic Criteria for Focal Cortical Dysplasias and Other Common Epileptogenic Lesions—Review of the Literature

Focal cortical dysplasia (FCD) represents a heterogeneous group of morphological changes in the brain tissue that can predispose the development of pharmacoresistant epilepsy (recurring, unprovoked seizures which cannot be managed with medications). This group of neurological disorders affects not only the cerebral cortex but also the subjacent white matter. This work reviews the literature describing the morphological substrate of pharmacoresistant epilepsy. All illustrations presented in this study are obtained from brain biopsies from refractory epilepsy patients investigated by the authors. Regarding classification, there are three main FCD types, all of which involve cortical dyslamination. The 2022 revision of the International League Against Epilepsy (ILAE) FCD classification includes new histologically defined pathological entities: mild malformation of cortical development (mMCD), mild malformation of cortical development with oligodendroglial hyperplasia in frontal lobe epilepsy (MOGHE), and “no FCD on histopathology”. Although the pathomorphological characteristics of the various forms of focal cortical dysplasias are well known, their aetiologic and pathogenetic features remain elusive. The identification of genetic variants in FCD opens an avenue for novel treatment strategies, which are of particular utility in cases where total resection of the epileptogenic area is impossible

Superhydrophobic Soot Coated Quartz Crystal Microbalances: A Novel Platform for Human Spermatozoa Quality Assessment

The functionality of human spermatozoa is a key factor for the success rate of natural human reproduction, but unfortunately the infertility progressively increases due to multifarious environmental factors. Such disquieting statistics requires the employment of sophisticated computer-assisted methods for semen quality analysis, whose precision, however, is unreliable in cases of patients with low sperm concentrations. In this study, we report a novel quartz crystal microbalance (QCM) based biosensor for in-situ quality assessment of male gametes, comprising a superhydrophobic soot coating as an interface sensing material. The soot deposition on the surface of a 5 MHz QCM eliminates the noise that normally arises upon immersion of the uncoated sensor in the test liquid environment, allowing the detection of human spermatozoa down to 1000–100,000 units/mL (1–100 ppb). Furthermore, the soot coated QCM delimitates in a highly repeatable way the immotile and motile sperm cells by inducing fundamentally distinct responses in respect to sensor sensitivity and signal trends. The obtained results reveal the strong potential of the superhydrophobic QCM for future inclusion in diverse laboratory analyses closely related to the in vitro fertilization procedures, with a final aim of gaining practical approaches for diagnoses and selection of male gametes

Autologous ovarian platelet rich plasma treatment improves oocyte and embryo quality: a before-after prospective study

AbstractPlatelet-rich plasma (PRP) is used for successful regeneration of female reproductive tissues. However, little is known about the effect of ovarian PRP treatment on oocyte and embryo quality. The objective of our study was to assess the role of autologous ovarian PRP treatment on ovarian reserve and number and quality of oocytes and embryos in women with poor ovarian response (POR) undergoing in-vitro fertilization cycles. A total of 66 women with POR were treated with ovarian PRP injection in two subsequent menstrual cycles. The antral follicle counts, serum anti-Mullerian hormone, follicle-stimulating hormone levels, fertilization rate, number and quality of oocytes, and embryos were assessed and compared between the cycle before and after PRP treatment. Ovarian PRP treatment resulted in insignificantly lower follicle-stimulating hormone levels, significantly higher antral follicle count, anti-Mullerian hormone, number of retrieved oocytes, and insignificantly higher fertilization rate. However, the mean number of Day 5 embryos (2.19 ± 1.45 vs. 1.58 ± 1.30, p = 0.01), the percentage of high-quality oocytes (45.29% ± 42.40% vs. 15.21% ± 30.24%, p < 0.01) and the percentage of grade-I blastocysts (52.10% ± 37.94% vs. 12.86% ± 22.97%, p < 0.01) were significantly higher after PRP treatment in comparison to the pretreatment period. Moreover, the mean MII oocyte quality (1.60 ± 0.54 vs. 2.31 ± 0.63, p < 0.01) and mean blastocyst quality (1.53 ± 0.45 vs. 2.42 ± 0.63, p < 0.01) were significantly improved in the post-treatment period. In conclusion, the applied autologous ovarian PRP treatment in poor responders may significantly improve oocyte and embryo quality

Vertical Transmission of SARS-CoV-2 Infection and Miscarriage in the Second Trimester: Report of an Immunohistochemically Proven Case

It is an acknowledged fact that SARS-CoV-2 exhibits tropism for the human placenta. A possible mechanism of SARS-CoV-2 entry into host cells is via angiotensin-converting enzyme 2 (ACE2) receptors, which are expressed in trophoblasts, endothelial cells, and macrophages. The present study describes a case of spontaneous miscarriage in the 20th gestational week after maternal SARS-CoV-2 infection. The placenta and various fetal organs were examined for structural alterations and expression of the viral nucleocapsid protein and several immune cell markers via immunohistochemistry (IHC). Histopathological examination of the placenta revealed acute chorioamnionitis, acute subamnionic placentitis, multiple intervillous thrombi, increased fibrinoid deposition, and necrotic changes of the chorionic villi. Immunohistochemistry confirmed the presence of SARS-CoV-2 nucleocapsid protein regions predominantly in the syncytiotrophoblast. Staining of the placental tissue for different markers helped elucidate the distribution of immune cells. Pathomorphological examination of the fetal organs demonstrated changes in microcirculation with the presence of sludge phenomenon and diapedesis haemorrhages, mostly in the lungs, brain, and myocardium. IHC staining of fetal organs revealed expression of SARS-CoV-2 nucleocapsid protein, which was detected to the highest extent in the brain, lungs, and liver. The findings of the present report support the hypothesis of possible vertical transmission of SARS-CoV-2 from mother to fetus

Hysteroscopy and female infertility: a fresh look to a busy corner

Hysteroscopy has evolved from the traditional art of examining the uterine cavity for diagnostic purposes to an invaluable modality to concomitantly diagnose and (see and) treat a multitude of intrauterine pathologies, especially in the field and clinics specialising in female reproduction. This article reviews the literature on the most common cervical, endometrial, uterine and tubal pathologies such as chronic endometritis, endometrial polyps, adenomyosis, endometriosis, endometrial atrophy, adhesions, endometrial hyperplasia, cancer, and uterine malformations. The aim is to determine the efficiency of hysteroscopy compared with other available techniques as a diagnostic and treatment tool and its association with the success of in vitro fertilisation procedures. Although hysteroscopy requires an experienced operator for optimal results and is still an invasive procedure, it has the unique advantage of combining great diagnostic and treatment opportunities before and after ART procedures. In conclusion, hysteroscopy should be recommended as a first-line procedure in all cases with female infertility, and a special effort should be made for its implementation in the development of new high-tech procedures for identification and treatment infertility-associated condition

Association between endometrial microbiome and implantation success in women with frozen embryo transfer: results of a prospective cohort study

AbstractThe aim of this prospective study was to compare the endometrial microbiome between pregnant and non-pregnant women after frozen embryo transfer (FET) with euploid embryos. Endometrial biopsies were collected from 30 women during the mid-luteal phase in a natural cycle. FET was performed with euploid embryos up to 3 months after the biopsy. Endometrial microbiota composition was analysed using 16S rRNA (v4-v5 region) next generation sequencing (NGS). The analysis of different clinical outcomes after the biopsy (no pregnancy (n = 14), and ultrasound confirmed pregnancy (n = 16)) revealed differences in the endometrial microbiome composition. In total, 271 distinct bacterial species and 668 bacterial genera were identified. The number of unique species found in non-pregnant women was 62 (22.88%), while in the patients who became pregnant after FET it was 39 (14.39%). Among them, bacteria with high frequency of occurrence such as Bacteroides spp., Cutibacterium granulosum, Isoptericola spp., Acetomicrobium spp., Marivivens spp. and Syntrophomonas spp. were found only in non-pregnant patients, while Bosea spp. was present only in pregnant women. The analysis of bacteria relative abundance revealed that Lactobacillus genus was not significantly different between the studied groups. In contrast, Serratia marcescens, Staphylococcus spp., Glutamicibacter spp. and Delftia spp. were significantly enriched in the non-pregnant group. In conclusion, specific bacteria taxa had higher relative abundance in the endometrium of patients with implantation failure after FET with euploid embryos. We hypothesize that an appropriate treatment for optimization of endometrial microbiome content in women with diagnosed microbiome dysbiosis could be beneficial for improvement of pregnancy rates