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Molecular aspects of mammalian oocyte and embryo quality
Chyská, Anna ; Vaškovičová, Michaela (advisor) ; Jansová, Denisa (referee)
According to statistics in the Czech Republic, up to 20 % of couples experience infertility, which is still rising. One of the infertility treatment options is to undergo one of the assisted reproduction methods. In vitro fertilization (IVF) is among the most commonly used methods. In order to increase the success rate of fertilization, it is preferable to have a quality oocyte with specific characteristics. Such an oocyte is then a prerequisite for a good quality embryo, a correct course of pregnancy, and proper fetal development. Meiosis, a key step in oocyte formation, is regulated by complex signalling pathways. If these pathways are dysfunctional, the chances of the oocyte developing into a competent embryo are reduced. For example, errors in segregation during meiosis lead to aneuploidy, which is a major cause of miscarriages and birth defects. Therefore, understanding the signaling pathways can help identify the origin of the errors that result in aneuploidy and thus contribute to improving women's reproductive health. Key words: aneuploidy, spindle, in vitro fertilization, spindle assembly checkpoint, oocyte quality, chromosome segregation
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Czechia as a target country for cross-border reproductive care
Volejníková, Adéla ; Šťastná, Anna (advisor) ; Fait, Tomáš (referee)
Czechia as a target country for cross-border reproductive care Abstract Since the 1970s, economically developed countries have been experiencing a change in the reproductive behavior of their populations, with one of the main trends being the postponement of fertility to a later age. However, this trend is associated with an increasing risk of infertility, as the chances of natural conception decrease as women age. In this context, there is a growing interest in the treatment of infertility through Assisted Reproductive Technologies (ART), which are regulated and governed by legal regulations in many countries. As a result, there is an increase in the provision of cross-border reproductive care, where infertile couples, primarily for legislative reasons, undergo assisted reproduction abroad. Since this is a relatively new and unexplored phenomenon, the aim of this study is to map the main trends in the provision of cross- border reproductive care, focusing on the perspective of Czechia as a destination country. Individual anonymized data on all initiated cycles of assisted reproduction in Czechia from 2016 to 2019 are used. It has been shown that assisted reproduction trends in Czechia are significantly influenced by the provision of cross-border reproductive care, as reproductive tourists accounted for...
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Hyperkoagulační stavy u žen po in vitro fertilizaci
HODINOVÁ, Lenka
This thesis is focused on hypercoagulable states in women after the method of assisted reproduction. Pregnancy can be defined as an acquired hypercoagulable state. There are physiological changes in blood coagulation during pregnancy, and these changes can lead to a risk of thromboembolism. The occurrence of another congenital or acquired hypercoagulable state increases this risk. The aim of this thesis is to describe the differences between two groups of pregnant women, namely spontaneous pregnancy and pregnancy after in vitro fertilization. The first part of the thesis compares the differences in the incidence of hypercoagulable states. The second part of the thesis is focused on the influence of the method of conception and other monitored factors on the pregnancy outcome. For analysis were used data from the women patients´ Clinical Hematology department and the department of Neonatology in the hospital České Budějovice, a. s.
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Assisted reproduction in Czechia: sociodemographic context of selected treatment methods
Waldaufová, Eva ; Šťastná, Anna (advisor) ; Fait, Tomáš (referee)
Assisted reproduction in Czechia: sociodemographic context of selected treatment methods Abstract In the context of reproductive ageing, which is one of the most important trends observed since the 1990s in Czechia, there is an increase in the use of assisted reproduction technologies (ART). This brings a number of aspects that can be the subject to a study in the field of demography. Mothers who have conceived by ART and mothers who have conceived without ART are different in terms of structure, and mothers with ART have the worse birth outcomes. The aim of the thesis is to analyze the use of ART methods in Czechia and to identify differences/similarities of mothers according to the way of conception. Not only to compare mothers with or without ART, but also the method of ART (in vitro fertilization, frozen embryo transfer, and oocyte reception). Three birth outcomes are analysed in more detail, and they are low birth weight, preterm births, and caesarean section births. The research is based on individualized anonymized data on mothers who gave birth in Czechia between 2013 and 2018. It turns out that there are differences in the structure of mothers according to the way of conception from the view of sociodemographic structure, health condition, and selected birth outcomes. Using the logistic regression...
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Womenś awareness of methods of assisted reproduction in the Czech Republic
Dolejšková, Michaela ; Černý, Andrej (advisor) ; Šimják, Patrik (referee)
The theme of my thesis is women's awareness about the methods of assisted reproduction in the Czech Republic. The work is devided into a theoretical part and practical part. In the theoretical part I deal with the physiology of reproductive organs of women and men, further I describe the term infertility and its causes. In the following chapters I focus on the process of finding a specialist, subsequent examinations and possible methods of assisted reproduction. In the practical part I examine the awareness of women in this area. As a data source I use an anonymous quantitative questionnaire, shared on social networks, filled in by women of different ages. 193 women completed the questionnaire. I made several hypotheses, which I confirmed or refuted thanks to the answers. Research has confirmed the hypothesis that more than half of women know when and to which doctor to address fertility problems. Subsequently, the second hypothesis was confirmed-most women know at least some of the risk factors affecting fertility. Furthermore, I assumed that most women are aware of the importance of age in the pursuit of conception. Although I confirmed the hypothesis thanks to a questionnaire survey, but not every woman knows how low the age at which fertility reduction begins to manifest. I refute the...
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Inhibins in reproduction
Babčová, Katarína ; Ulčová-Gallová, Zdeňka (advisor) ; Kužel, David (referee) ; Crha, Igor (referee)
Inhibin A and B participate to regulation of gametogenesis. We investigated their applicability as a marker of gametogenesis of men fertility disorders. We monitored the levels of inhibins during the treatment. We interested in their paracrine activity, relationship in sera, follicular fluid and seminal plasma depending on cause of fertility failure. We studied the levels of inhibin B in serum and seminal plasma from 355 men treated for fertility failure, in the context of their andrological and immunological findings (quality of spermiogrammes and acrosome area). We monitored concentration of levels of inhibin A and B in serum and follicular fluids depending on cause of fertility failure, on course and treatment outcome. We took blood samples in the time of the oocytes collection, of the embryotransfer and early pregnancy. The follicular fluids were obtained during the oocytes collection. The levels of both of inhibins were measured by ELISA in all medium (serum, follicular fluid, seminal plasma). We confirm, that inhibin B is useful marker of spermatogenesis in men, but is necessary to examine patient in complex with determination of immunology profile or quality of acrosome. Seminal plasma is, in some indicated cases, more suitable diagnostics material. Similarly inhibin B in women seems to be...
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Womenś awareness of methods of assisted reproduction in the Czech Republic
Dolejšková, Michaela ; Černý, Andrej (advisor) ; Šimják, Patrik (referee)
The theme of my thesis is women's awareness about the methods of assisted reproduction in the Czech Republic. The work is devided into a theoretical part and practical part. In the theoretical part I deal with the physiology of reproductive organs of women and men, further I describe the term infertility and its causes. In the following chapters I focus on the process of finding a specialist, subsequent examinations and possible methods of assisted reproduction. In the practical part I examine the awareness of women in this area. As a data source I use an anonymous quantitative questionnaire, shared on social networks, filled in by women of different ages. 193 women completed the questionnaire. I made several hypotheses, which I confirmed or refuted thanks to the answers. Research has confirmed the hypothesis that more than half of women know when and to which doctor to address fertility problems. Subsequently, the second hypothesis was confirmed-most women know at least some of the risk factors affecting fertility. Furthermore, I assumed that most women are aware of the importance of age in the pursuit of conception. Although I confirmed the hypothesis thanks to a questionnaire survey, but not every woman knows how low the age at which fertility reduction begins to manifest. I refute the...
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Inhibins in reproduction
Babčová, Katarína ; Ulčová-Gallová, Zdeňka (advisor) ; Kužel, David (referee) ; Crha, Igor (referee)
Inhibin A and B participate to regulation of gametogenesis. We investigated their applicability as a marker of gametogenesis of men fertility disorders. We monitored the levels of inhibins during the treatment. We interested in their paracrine activity, relationship in sera, follicular fluid and seminal plasma depending on cause of fertility failure. We studied the levels of inhibin B in serum and seminal plasma from 355 men treated for fertility failure, in the context of their andrological and immunological findings (quality of spermiogrammes and acrosome area). We monitored concentration of levels of inhibin A and B in serum and follicular fluids depending on cause of fertility failure, on course and treatment outcome. We took blood samples in the time of the oocytes collection, of the embryotransfer and early pregnancy. The follicular fluids were obtained during the oocytes collection. The levels of both of inhibins were measured by ELISA in all medium (serum, follicular fluid, seminal plasma). We confirm, that inhibin B is useful marker of spermatogenesis in men, but is necessary to examine patient in complex with determination of immunology profile or quality of acrosome. Seminal plasma is, in some indicated cases, more suitable diagnostics material. Similarly inhibin B in women seems to be...
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Study of luteinizing hormone's and its receptor's polymorphisms in relation to development of ovarian hyperstimulation syndrome
Chrudimská, Jana ; Macek, Milan (advisor) ; Schierová, Michaela (referee)
Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic complication in an assisted reproduction (ART), which can threaten the life of the patient. It is caused by an increased sensitivity of ovarian receptors to exogenous gonadotrophins during controlled ovarian hyperstimulation (COH) that is necessary for induction more than one oocyte. Treatment for this syndrome is symptomatic hence the emphasis is primarily on the prevention. The purpose of current reproduction genetics is to find risk markers, by which it could be possible to assess the sensitiveness of a hormonal receptor for luteinizing hormone (LH-R) and a receptor for follicle stimulating hormone (FSH-R) just before the start of the therapy. Individualization of the COH would decrease the risk of both, the OHSS, and the risk of canceling the COH through a poor ovarian response. Temporary, only FSH-R genotypes are studied in relation to an increased risk of OHSS and its severity. The aim of further studies is an ascertaining the possible impact of LH-R's and the luteinizing hormone's (LH) genotype on the final ovarian response during COH and other types of hormonal treatment. This bachelor's work summarizes the present knowledge of the possible connection of LH's and LH-R's polymorphisms to OHSS in continuum to findings gained about FSH-R.
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