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Spinal muscular atrophy
Bohatá, Jana ; Šolc, Roman (advisor) ; Brynychová, Iva (referee)
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder which affects α-motor neurons in anterior horns of spinal cord resulting in progressive muscle weakness. The estimated incidence is 1:10 000 and carrier frequency 1:40-1:60. SMA is classified into four grades depending on the age of onset and its severity. Life expectancy differs according to grade of SMA, patients suffering from the most serious grades live about two years, milder could live to adulthood. This disorder is caused by mutation of the SMN1 gene which is located on the fifth chromosome. In the majority of cases the type of mutation is homozygous deletion in SMN1 gene. Keywords: Spinal muscular atrophy; neuromuscular disorder; alpha motor neurons; autosomal recessive disorder; SMN1; SMN2
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Molecular Pathophysiology of Primary Hyperuricemia and Gout
Bohatá, Jana ; Stibůrková, Blanka (advisor) ; Hrnčíř, Zbyněk (referee) ; Friedecký, David (referee)
Primary hyperuricemia, as a condition of elevated serum uric acid levels, is caused by various factors and necessarily precedes a form of inflammatory arthritis referred to as gout. Uric acid is the end product of purine catabolism and requires specialized proteins for its transport. Pathogenic variants in the genes for these transport proteins can have a major negative impact on their function, thereby affecting the resulting serum uric acid levels. However, chronically elevated uric acid levels are not the only predisposition to the development of gout. Other factors, such as epigenetic mechanisms or genetic predispositions to inflammatory conditions caused by immune dysregulation, are likely to play a role in disease progression. The aim of the study was to analyse damaging variants in genes for important urate transporters ABCG2, SLC22A12 and SLC2A9, which may cause impaired excretion or reabsorption of uric acid and thus contribute to the development of primary hyperuricemia and gout, or rare hereditary renal hypouricemia. We also focused on circulating miRNAs in the plasma of patients with primary hyperuricemia, gout and gout attack. We identified and functionally characterized over ten rare nonsynonymous variants in the ABCG2 gene. Most of these variants had a negative impact on protein...
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The expression profile of cardiovascular disease associated microRNAs in pregnancies with clinical manifestation of gestational hypertension, preeclampsia and intrauterine growth restriction
Bohatá, Jana ; Hromadníková, Ilona (advisor) ; Korabečná, Marie (referee)
MicroRNA (miRNA) are small non-coding 21-23 nucleotides long one strand RNAs. They are among the major posttranscriptional regulators of gene expression that regulate both physiological and pathological processes. Some of microRNAs, amount of their expression respectively, are specific only for certain type of tissue or pathological condition. The hypothesis for my diploma thesis was that gene expression of 28 cardiovascular disease associated microRNAs (miR-1-3p, miR-16-5p, miR-17-5p, miR- 20a-5p, miR-20b-5p, miR-21-5p, miR-23a-3p, miR-24-3p, miR-26a-5p, miR-29a-3p, miR-92a-3p, miR-100-5p, miR-103a-3p, miR-125b-5p, miR-126-3p, miR-130b-3p, miR-133a-3p, miR-143-3p, miR-145-5p, miR-146a-5p, miR-181-5p, miR-195-5p, miR- 199a-5p, miR-210-3p, miR-221-3p, miR-342-3p, miR-499a-5p, miR-574-3p) would differ in umbilical cord blood between groups of women with physiological pregnancies (FG), gestational hypertension (GH), preeclampsia (PE) and fetal growth restriciton (FGR). The studied cohort consisted of 184 pregnant women involving 44 controls, 47 GH pregnancies, 56 PE pregnancies and 37 FGR pregnancies. Relative quantification of microRNAs was performed by quantitative real-time PCR. Results showed a trend to miR-195-5p down-regulation in umbilical cord blood of GH patients. On the other hand, mild PE...
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Spinal muscular atrophy
Bohatá, Jana ; Šolc, Roman (advisor) ; Brynychová, Iva (referee)
Spinal muscular atrophy (SMA) is an autosomal recessive neuromuscular disorder which affects α-motor neurons in anterior horns of spinal cord resulting in progressive muscle weakness. The estimated incidence is 1:10 000 and carrier frequency 1:40-1:60. SMA is classified into four grades depending on the age of onset and its severity. Life expectancy differs according to grade of SMA, patients suffering from the most serious grades live about two years, milder could live to adulthood. This disorder is caused by mutation of the SMN1 gene which is located on the fifth chromosome. In the majority of cases the type of mutation is homozygous deletion in SMN1 gene. Keywords: Spinal muscular atrophy; neuromuscular disorder; alpha motor neurons; autosomal recessive disorder; SMN1; SMN2
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