National Repository of Grey Literature 153 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Use of cannabis in pregnancy; effect on placental functions
Sáňková, Eliška ; Štaud, František (advisor) ; Vokřál, Ivan (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Eliška Sáňková Supervisor: Prof. PharmDr. František Štaud, Ph.D. Consultant: Dr. Ramon Portillo, Ph.D. Title of diploma thesis: Use of cannabis in pregnancy; effect on placental functions The increasing use of cannabinoids among pregnant women, including tetrahydrocannabinol, hexahydrocannabinol, cannabidiol, cannabigerol, and cannabinol, has become a major cause for concern due to the potential adverse effects on fetal health. Prenatal cannabis exposure has been linked to cognitive, attention, and memory deficits in the developing fetus, although the mechanisms underlying these effects are not fully understood. The placenta, a vital organ for fetal development, immune protection, and regulating inflammatory cytokines, may play a role in the relationship between cannabis use during pregnancy and fetal neurodevelopmental disorders. Inflammation during pregnancy, whether from infections or other sources, can impair placental function and further increase the risk of the above-mentioned disorders in the child. Despite the growing evidence of placental dysfunction and abnormal fetal neurodevelopment due to prenatal cannabis exposure, little is known about the relationship between them. This study...
Effect of inflammation on placental metabolism of tryptophan
Orbisová, Anna ; Štaud, František (advisor) ; Jirkovský, Eduard (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Anna Orbisová Supervisor: Prof. PharmDr. František Štaud, Ph.D. Consultant: Dr. Cilia Abad, Ph.D. Title of diploma thesis: Effect of inflammation on placental metabolism of tryptophan Maternal inflammation throughout pregnancy has been firmly linked to the development of neuropsychiatric disorders in the offspring. Furthermore, intrauterine infections, whether viral or bacterial, are widely recognized as significant risk factors for conditions like autism and schizophrenia. Tryptophan metabolism has been suggested as a plausible pathway through which maternal inflammation during gestation can hinder fetal brain development and programming. This occurs as tryptophan is metabolized through the serotonin (5-HT) pathway, producing metabolites that exert direct effects on the development of the fetal brain. In this work, using an ex vivo model, we assess the impact of bacterial (LPS) and viral (poly I:C) placental infection on the 5-HT pathway. Human term placenta explants were treated with LPS or Poly I:C for different times (4 or 18 hours). Subsequently, the impact on gene and protein expressions of the key enzymes within the 5-HT pathway, along with their functional enzymatic activities, was...
Precision-cut placental slices as a model to study inflammatory response
Bolboli, Bahareh ; Štaud, František (advisor) ; Carazo Fernández, Alejandro (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Bahareh Bolboli Supervisor: Prof. PharmDr. František Štaud, Ph.D. Consultant: Kasin Yadunandam Anandam, Ph.D. Title of the diploma thesis: Precision-cut placental slices as a model to study inflammatory response. Maternal inflammation during pregnancy is a recognized factor linked to an array of complications and potential neurodevelopmental and neuropsychiatric risks for offspring. Placenta isthe crucial interface between maternal and fetal domains. This organ not only shapes fetal development but also possesses the ability to respond to inflammatory stimulations, potentially in a sex-specific manner. Nonetheless, the fundamental immunoregulatory mechanisms orchestrating such responses remain unclear. To bridge this knowledge gap, our study harnessed an innovative approach: the ex vivo precision-cut placental slice model using rat placentas. This experimental design was tailored to probe acute inflammatory responses. Precision-cut placental slices, precisely 200 µm thick, were meticulously generated from both male and female rat placentas. These slices were subjected to varying concentrations of Lipopolysaccharide (LPS) or Polyinosinic: polycytidylic acid (Poly I:C) for discrete periods of 4...
Effect of antidepressants on placental monoamine homeostasis
Horáčková, Hana ; Štaud, František (advisor) ; Sumová, Alena (referee) ; Soukup, Ondřej (referee)
Charles University, Faculty of Pharmacy in Hradec Kralove Department of Pharmacology and Toxicology Candidate: Mgr. Hana Horackova Supervisor: prof. PharmDr. Frantisek Staud, Ph.D. Title of doctoral thesis: Effect of antidepressants on placental monoamine homeostasis Depression in pregnancy is an increasingly common problem and it is reported that up to 25 % of pregnant women suffer from depression and approximately 13 % are prescribed antidepressants. Currently, the most commonly prescribed antidepressants in pregnancy are selective serotonin reuptake inhibitors (SSRIs) and serotonin-norepinephrine reuptake inhibitors (SNRIs). However, the safety of these treatments is still controversial, as poor pregnancy outcomes such as organ malformations, increased incidence of neurological disorders, and preeclampsia have been reported in pregnant women taking antidepressants. However, knowledge of the responsible mechanisms is still lacking at present as they have not been sufficiently investigated. Although the effect of antidepressants on the availability of serotonin (5-HT), dopamine (DA) and norepinephrine in brain tissue has been extensively characterized in the literature, the interactions of antidepressants with placental monoamine transporters have not received attention to date. However,...
Placental homeostasis of monoamines; effect of gestation age
Mahrla, Filip ; Štaud, František (advisor) ; Vokřál, Ivan (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Filip Mahrla Supervisor: Prof. PharmDr. František Štaud, Ph.D. Consultant: PharmDr. Rona Karahoda, Ph.D. Title of diploma thesis: Placental homeostasis of monoamines; effect of gestation age Catecholamines norepinephrine and dopamine have been implicated in numerous physiological processes within the central nervous system. Emerging evidence suggests their involvement in placental development and functions and a crucial role in fetal development and programming. Nonetheless, a comprehensive characterization of catecholamine synthesis, degradation, and transport in the fetoplacental unit is still lacking. Thus, in this thesis, we aimed to provide a comprehensive evaluation of catecholamine metabolism and transport in the fetoplacental unit. Gene and protein expression was evaluated using quantitative polymerase chain reaction (PCR) and Western blot analysis, respectively. Firstly, using several placental cell models (BeWo, JEG-3, primary trophoblast cells), we identified components of cellular catecholamine handling associated with the trophoblast cells. Next, we determined the effect of advancing gestation on the placental catecholamine system in humans (first trimester vs. term placenta) and...
Placental transport of dopamine and norepinephrine
Turková, Helena ; Štaud, František (advisor) ; Jirkovský, Eduard (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology & Toxicology Student: Helena Turková Supervisor: prof. PharmDr. František Štaud, Ph.D. Title of diploma thesis: Placental transport of dopamine and norepinephrine During the whole course of pregnancy, it is important to maintain proper monoamine homeostasis, namely serotonin (5-HT), norepinephrine (NE), and dopamine (DA), which are crucial for proper placental function and fetal development. Monoamines are important neuromodulators, involved in cell proliferation, and differentiation. and neuronal migration. High fetal monoamine secretion during gestation demands a responsible clearance mechanism, as disruption of their balance may lead to long-lasting changes in brain structure and function, provoking a higher risk of attention deficit hyperactivity disorder (ADHD), autism or depression. However, uptake of NE a DA through the fetoplacental unit has not been fully and in detail described. Therefore, in this diploma thesis, we focus on the uptake of NE and DA through ex vivo isolated vesicles of microvillous (MVM) and basal (BM) membranes from healthy human term placentas. Our results show that NE and DA uptake is mediated via high-affinity and low-capacity serotonin (SERT) and norepinephrine (NET) transporters in...
Placental transport of dopamine and norepinephrine
Turková, Helena ; Štaud, František (advisor) ; Jirkovský, Eduard (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology & Toxicology Student: Helena Turková Supervisor: prof. PharmDr. František Štaud, Ph.D. Title of diploma thesis: Placental transport of dopamine and norepinephrine During the whole course of pregnancy, it is important to maintain proper monoamine homeostasis, namely serotonin (5-HT), norepinephrine (NE), and dopamine (DA), which are crucial for proper placental function and fetal development. Monoamines are important neuromodulators, involved in cell proliferation, and differentiation. and neuronal migration. High fetal monoamine secretion during gestation demands a responsible clearance mechanism, as disruption of their balance may lead to long-lasting changes in brain structure and function, provoking a higher risk of attention deficit hyperactivity disorder (ADHD), autism or depression. However, uptake of NE a DA through the fetoplacental unit has not been fully and in detail described. Therefore, in this diploma thesis, we focus on the uptake of NE and DA through ex vivo isolated vesicles of microvillous (MVM) and basal (BM) membranes from healthy human term placentas. Our results show that NE and DA uptake is mediated via high-affinity and low-capacity serotonin (SERT) and norepinephrine (NET) transporters in...
Functional receptor alterations in urinary bladder and urethra in an animal model of chronic prostatitis-chronic pelvic pain syndrome
Rataj, Jan ; Štaud, František (advisor) ; Vokřál, Ivan (referee)
University of Gothenburg; Charles University Sahlgrenska Academy; Faculty of Pharmacy in Hradec Králové Institute of Neuroscience and Physiology; Department of Pharmacology & Toxicology Student: Jan Rataj Supervisor: Michael Winder, Ph.D.; Özgü Aydogdu, M.D.; Prof. PharmDr. František Štaud, Ph.D. Title of diploma thesis: Functional receptor alterations in urinary bladder and urethra in an animal model of chronic prostatitis-chronic pelvic pain syndrome Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a common urological disorder. Current available pharmacological treatment options are not effective enough, mostly due to the etiology of CP/CPPS not being fully understood. My thesis aimed to examine potential urethral changes, using immunohistochemistry methods and an organ bath setup, in a rat model of CP/CPPS. The thesis also examined changes in the expression of muscarinic receptor subtype 3 (M3), β3 adrenoceptors, and purinergic P2X1 and P2X3 receptors in the urinary bladder using immunohistochemistry. Specifically, it was examined how these differ when celecoxib, BAY 60-2770 and a combination of celecoxib and BAY 60-2770 had been administered during the development of prostate inflammation in the rat model of CP/CPPS. The data show an upregulation of M3 receptors in animals with...
Placental homeostasis of monoamines; effect of gestation age
Mahrla, Filip ; Štaud, František (advisor) ; Vokřál, Ivan (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Filip Mahrla Supervisor: Prof. PharmDr. František Štaud, Ph.D. Consultant: PharmDr. Rona Karahoda, Ph.D. Title of diploma thesis: Placental homeostasis of monoamines; effect of gestation age Catecholamines norepinephrine and dopamine have been implicated in numerous physiological processes within the central nervous system. Emerging evidence suggests their involvement in placental development and functions and a crucial role in fetal development and programming. Nonetheless, a comprehensive characterization of catecholamine synthesis, degradation, and transport in the fetoplacental unit is still lacking. Thus, in this thesis, we aimed to provide a comprehensive evaluation of catecholamine metabolism and transport in the fetoplacental unit. Gene and protein expression was evaluated using quantitative polymerase chain reaction (PCR) and Western blot analysis, respectively. Firstly, using several placental cell models (BeWo, JEG-3, primary trophoblast cells), we identified components of cellular catecholamine handling associated with the trophoblast cells. Next, we determined the effect of advancing gestation on the placental catecholamine system in humans (first trimester vs. term placenta) and...
Modern approaches to cancer treatment
Hulová, Lucie ; Štaud, František (advisor) ; Čečková, Martina (referee)
Charles University in Prague Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Candidate: Lucie Hulová Supervisor: Prof. PharmDr. František Štaud, Ph.D. Title of diploma thesis: Modern approaches to cancer treatment Despite the progres of modern medicine cancer diseases are still the second most frequent cause of death in the world. This is due to the still incomplete knowledge of the sources for tumor resistance mechanics, diversity of tumor cells characteristic signs, poor disease prevention as well as late diagnosis. Lack of the resistance mechanics knowledge and attributes characteristics of these tumors led to a number of studies dealing with this issue. These studies revealed some specific properties for number of these tumors, for example occurrence of surface changes of some tumors and activation of certain molecular lines in the cancerous process. This fact gave an impulse to the research and production of substances which selectively kill only tumor cells. This is called a targeted therapy having today an utmost importance in the therapeutic strategy.

National Repository of Grey Literature : 153 records found   1 - 10nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.