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Markers for the prediction of preeclampsia and their relevance in the first trimester of pregnancy
Šedová, Lenka ; Kestlerová, Andrea (advisor) ; Švandová, Ivana (referee)
Preelampsia is a clinical syndrome found uniquely in a pregnant patient with an incidence 2 - 8 % of pregnancies worldwide. It is defined as the new onset of hypertension and proteinuria after 20 weeks of gestation, resolving with delivery or soon thereafter. Its worst consequences are eclampsia with tonic and clonic seizures and possibly coma. Also pulmonary edema, CNS hemorrhage, anaemia, hepatorenal failure, circulation failure and other complications can occur. In its most severe form, it affects nearly every organ. Preeclampsia remains a major cause of premature delivery and both maternal and neonatal mortality and morbidity. The origin and the cause of the disease remain unknown and therefore the medical treatment focuses only on clinical manifestations. Timely prediction of preeclampsia would enable accurate therapeutic treatment and a decrease of the threat to maternal and fetal health. In this study, the most important predictive biomarkers of PE and their relevance in the first trimester of gestation are presented. Furthermore, a first trimester screening with the best prediction rates is described. Powered by TCPDF (www.tcpdf.org)
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Tests for HIV positive patients at the department of Clinical Biochemistry and Imunology at the Hospital Bulovka
CHUDÁČKOVÁ, Gabriela
HIV is a human immunodeficiency virus that attacks the host's immune system and reduces the ability of the immune system to respond adequately to the presence of other infectious agents with which the healthy immune system would usually advise. HIV antiretroviral therapy doesn't ensure complete removal of the virus from the organism. The therapy only blocks further proliferation of viral cells in host cells. Antiretrovirotics are primarily based on the inhibition of viral enzymes. Combinated treatment or HAART (Highly Active Antiretroviral Therapy) consists of a combination of three or more medicines with different effects. Each of these medicines reacts with other receptors and with other enzymes and reacts at different stages of the life cycle of the virus. The effects of treatment and its negative effects on the patient's organism are monitored at regular intervals in the AIDS center in the hospital Na Bulovce. Employees from this center send patient samples to different departments according to examination requirements. The aim of this bachelor thesis is to acquaint with selected biochemical and immunological parameters investigated at the Department of Clinical Biochemistry and Imunology in the hospital Na Bulovce and use these parameters to try to find out effects of treatment in selected patients who have already been detected HIV positive by detection of surface features CD4+ and CD8+ on Th-lymphocytes by flow cytometry. Furthermore monitoring patient's status during therapy with selected biochemical markers analyzed on an automated biochemical analyzer and also evaluation and description of the current possibilities of laboratory determination in the detection of HIV infection.
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Markers for the prediction of preeclampsia and their relevance in the first trimester of pregnancy
Šedová, Lenka ; Kestlerová, Andrea (advisor) ; Švandová, Ivana (referee)
Preelampsia is a clinical syndrome found uniquely in a pregnant patient with an incidence 2 - 8 % of pregnancies worldwide. It is defined as the new onset of hypertension and proteinuria after 20 weeks of gestation, resolving with delivery or soon thereafter. Its worst consequences are eclampsia with tonic and clonic seizures and possibly coma. Also pulmonary edema, CNS hemorrhage, anaemia, hepatorenal failure, circulation failure and other complications can occur. In its most severe form, it affects nearly every organ. Preeclampsia remains a major cause of premature delivery and both maternal and neonatal mortality and morbidity. The origin and the cause of the disease remain unknown and therefore the medical treatment focuses only on clinical manifestations. Timely prediction of preeclampsia would enable accurate therapeutic treatment and a decrease of the threat to maternal and fetal health. In this study, the most important predictive biomarkers of PE and their relevance in the first trimester of gestation are presented. Furthermore, a first trimester screening with the best prediction rates is described. Powered by TCPDF (www.tcpdf.org)
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Farmaka ve vodním prostředí a jejich vliv na ryby
BURKINA, Viktoriia
In this thesis, the impact of atenolol, verapamil, dexamethasone, clotrimazole, and PBSA on the physiological condition and health of rainbow trout (Oncorhynchus mykiss) were studied in vivo and in vitro. The sub-chronic test of atenolol, including at the environmentally relevant concentration, demonstrated that only the fish exposed to atenolol at a concentration of 1000 ?g?L-1 may be at a higher risk of oxidative stress. The second pharmaceutical compound studied was an L-type calcium channel blocker, verapamil. Despite the relatively high concentration of verapamil included in the experiments, the rates of seven hepatic CYP450-mediated reactions (EROD, MROD, PROD, BFCOD, COH, and PNPH) were unchanged in the exposed rainbow trout. This indicates that the activities of the selected CYP450 enzymes were not affected. Exposure to the highest concentration of PBSA (1000 ?g?L-1) led to significantly inhibited glutathione reductase activity. The activities of the EROD, MROD, and PROD enzymes gradually increased, beginning at the environmentally relevant concentrations. We suggest that long-term exposure to PBSA could cause oxidative stress in fish, as indicated by the decreased activity of GR. Moreover, PBSA could interact with intracellular receptors due to the elevated activities of CYP1A (EROD and MROD) and CYP2B (PROD). Rainbow trout showed multiple responses after exposure to clotrimazole. Changes in the haematological parameters in the exposed rainbow trout suggested that the immune system and haemoglobin synthesis were affected. The antioxidant defence enzymes that responded to the clotrimazole exposure influenced the oxidative stress status of the fish. Sub-chronic exposure to clotrimazole did not lead to oxidative stress in any of the fish tissues studied, as indicated by the unchanged TBARS levels. Hepatic energetic pathways were activated in the tested groups after 42 days of exposure to clotrimazole. High levels of glutathione S-transferase were seen in the liver and gill tissues, possibly associated with the detoxification of clotrimazole. The interaction of clotrimazole with intracellular receptors can be expected due to the changes in the catalytic activities of CYP1A1 and CYP3A. The BCF levels in the muscle tissue suggest a moderate bioaccumulation of CLO. The relatively long elimination period for CLO in the fish kidney (half-life = 29 days) may imply a greater potential for adverse effects in this organ. This finding is significant in view of the structural disturbances that appeared in the kidney and testis. The changes observed in the kidney were most prominent in the tubular epithelial cells. Changes in the gonads were only visible in the male specimens, and the pathological changes in the testis may indicate a disruption of steroidogenesis. The potential of clotrimazole and dexamethasone to inhibit CYP450 enzyme activity in rainbow trout hepatic microsomes was investigated in vitro. Clotrimazole non-competitively inhibited EROD activity in the hepatic microsomes, while BFCOD activity was competitively inhibited. PNPH activity was only slightly reduced in the presence of clotrimazole, indicating that it does not significantly interact with CYP2E1. The presence of dexamethasone in the incubations did not affect any of the CYP450 enzymes investigated. Everything considered, the results of the study confirmed that the presence of clotrimazole in the environment is of concern with respect to its impact on the health status of fish. In this thesis, the data of the actual effects of several PPCPs on fish were discussed. Based on the response of selected molecular endpoints, the cardiovascular and anti-inflammatory drugs studied do not present a significant risk for fish, while the antifungal drug and UV-screening agent that were tested may disrupt several physiological processes in fish.
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