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Steroid metabolome and multiple pregnancy
Černý, Andrej ; Pařízek, Antonín (advisor) ; Hubka, Petr (referee) ; Kiss, Imrich (referee)
Steroid hormones can be divided into 2 groups - intracellular and extracellular, depending on location of their activity. Intracellular ones influence expression of genes while acting as transcription factors. This so-called genomic effect is very slow. Extracellular (non-genomic) steroids bind to neurotransmitter receptors located on the cytoplasmic cell membrane and thus affect ionic channels permeability. Their effect is faster. We refer to them as neuroactive steroids (produced in different body tissues or administered externally) or neurosteroids (synthetized in nervous system cells). Some neuroactive steroids and their metabolites (e.g. progesterone) are crucial in stabilizing the pregnancy. Other steroid disorders play their role in wide spectre of pregnancy complications, such as preterm labor, preeclampsia, intrahepatic cholestasis in pregnancy etc. Our scientific interest in collaboration with the Department of Steroids and Proteofactors of the Institute of Endocrinology in Prague is focused on investigation of multiple pregnancies in term of steroid metabolome. Studies conducted so far have not provided a comprehensive analysis of steroidome within mothers and fetuses of multiple pregnancies. The aim of our research is to clarify the relationship between fetuses and mother from the point...
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Postpartal expression profile of cardiovascular microRNAs with regard to occurrence of pregnancy-related complications - study on mothers 3-10 years after the delivery
Marvanová, Veronika ; Hromadníková, Ilona (advisor) ; Korabečná, Marie (referee)
The aim of this study was to investigate gene expression of cardiovascular miRNAs in peripheral blood of mothers after delivery. MiRNAs are small non-coding RNAs, which significantly modulate posttranscriptional adjustments of mRNA and thus regulate gene expression across biological processess. Dysregulation of miRNAs is associated with many pathological phenomena, thanks that we can use them for diagnosis and potentionaly we can treat these diseases by the manipulation of miRNA gene expression. We examined gene expression of circulating miRNAs associated with cardiovascular diseases, and we investigated, how the expression profile depends on pregnancy course and manifestation of pregnancy-related complications. For this purpose we examined material from 221 mothers 3-10 years after delivery. A group with identical pregnancy-related complication was always compared with a group of mothers after physiological pregnancy. Gene expression of 29 cardiovascular miRNAs in peripheral blood was studied using reverse transcription and quantitative real-time PCR. It was confirmed, that the expression profile of miRNAs differed between pregnancy-related complications and physiological controls. We also confirmed, that the profile of gene expression discovered at mothers 3-10 years after delivery was different...
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Postnatal screening of cardiovascular microRNAs in children descending from pregnancy-related complications
Semencová, Andrea ; Hromadníková, Ilona (advisor) ; Korabečná, Marie (referee)
Children descending from pregnancy complicated by gestational hypertension, preeclampsia or fetal growth restriction have a lifelong increased risk of development of cardiovascular disease. This study investigates the expression profile of 29 cardiovascular and cerebrovascular microRNAs in children at the age of 3 to 11 years. MicroRNAs are short non-coding RNA molecules affecting gene expression by posttranscriptional modifications of mRNA, which affects biological processes. Abnormal microRNA levels can lead to pathological conditions of the individual. This study explores the relationship between dysregulated microRNA levels in whole peripheral venous blood of children and the presence of complications during pregnancy. Furthermore, this study looks at expression profile specificities depending on the presence of pathology in the child's cardiovascular system, as found in a clinical examination consisting of BMI assessment and evaluation, blood pressure testing and ultrasound examination of the heart. Dysregulated profile was present in children with gestational hypertension in miR-1-3p, miR-17-5p, miR-20a-5p, miR-21-5p, miR-26a-5p, miR-29a-3p, miR-126-3p, miR-133a-3p, miR-181a-5p, miR-199a-5p, miR-342-3p and miR-499-5p. In children with preeclampsia, dysregulation was found with miR-1-3p and...
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Postpartal expression profile of cardiovascular microRNAs with regard to occurrence of pregnancy-related complications - study on mothers 3-10 years after the delivery
Marvanová, Veronika ; Hromadníková, Ilona (advisor) ; Korabečná, Marie (referee)
The aim of this study was to investigate gene expression of cardiovascular miRNAs in peripheral blood of mothers after delivery. MiRNAs are small non-coding RNAs, which significantly modulate posttranscriptional adjustments of mRNA and thus regulate gene expression across biological processess. Dysregulation of miRNAs is associated with many pathological phenomena, thanks that we can use them for diagnosis and potentionaly we can treat these diseases by the manipulation of miRNA gene expression. We examined gene expression of circulating miRNAs associated with cardiovascular diseases, and we investigated, how the expression profile depends on pregnancy course and manifestation of pregnancy-related complications. For this purpose we examined material from 221 mothers 3-10 years after delivery. A group with identical pregnancy-related complication was always compared with a group of mothers after physiological pregnancy. Gene expression of 29 cardiovascular miRNAs in peripheral blood was studied using reverse transcription and quantitative real-time PCR. It was confirmed, that the expression profile of miRNAs differed between pregnancy-related complications and physiological controls. We also confirmed, that the profile of gene expression discovered at mothers 3-10 years after delivery was different...
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Increasing age of primigravidae in the Czech Republic
Svobodová, Anežka ; Kulhavá, Miluše (advisor) ; Lukášová Jeřábková, Lenka (referee)
Increasing age of primigravidae is discussed topic nowdays. It's a trend that also affects the Czech Republic - The Czech Statistical Office shows that the process of increasing age of primigravidae progresses since 1990 till now and that is why I consider it important to talk about this issue. The main objective of this work is to determine the causes of the increasing age of primigravidae in the Czech Republic. Sub-objectives are: to determine if socioeconomic factors are reasons for delaying childbirth, to determine whether delaying childbirth is the cause of the emancipation of women and whether the decision of delaying childbirth is affected by low knowledge of risks associated with late childbirths (for both mother and child). The work consists of two parts - theoretical and practical. The theoretical part consists of three parts and each of them is related to one objective. The first part is dedicated to changes during pregnancy and pregnancy of old primigravidae. The second part analyses family policy in the Czech Republic and the third part describes status of women in the Czech Republic. The research part is implemented in the Highlands region and in Prague, these two parts has been compared. As a research method I have chosen quantitative method of anonymous questionnaire. The...
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The Role of Heat Shock Proteins in Pathogenesis of Placental Insufficinecy
Slabá, Kristýna ; Hromadníková, Ilona (advisor) ; Černý, Jan (referee)
Heat shock proteins (Hsp) are highly conserved proteins that are part of the universal stress response of the cell. Their main function is to protect cells against structural and functional damage. Organisms exposed to different forms of stress, such as e.g. a lack of nutrients or water, hypoxia, infection or inflammation, demonstrated an increased gene expression of these proteins. Pregnancy complications cause stress conditions for maternal and fetal organism, which may result in an increased gene expression of Hsp. In my thesis, I examined the concentration of extracellular mRNA for five different heat shock proteins (Hsp27, Hsp60, Hsp70, Hsp90, HspBP1) in the plasma of pregnant women and wheather this concentration is affected by possible pregnancy complications (preeclampsia, fetal growth restriction and gestational hypertension). I also investigated a possible correlation between mRNA plasma concentration for Hsp and pulsatility index values (PI) obtained by Doppler ultrasound. This research should help to invent a new predictive method for pregnancy complications, based on a detection of specific biomarkers in the first trimester of pregnancy. The research was conducted on plasma samples obtained from peripheral blood of pregnant women, whose collection was performed during clinical manifestations of...
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