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The effect of nutrition on bone metabolism
Švejkovská, Klára ; Živná, Helena (advisor) ; Horák, Pavel (referee) ; Kutílek, Štěpán (referee)
The effect of nutrition on bone metabolism The bone has a function for support and protection, and is also a place for hematopoiesis and for mineral homeostasis. The subject of interest of this thesis is to evaluate the effect of chosen proteins, amino acids, iron and the conditions such as long-term under-nutrition, short-term starving and repeated blood withdrawals on the bone parameters - the length and the diameter of the bone, the width of corticalis, and the mechanical properties - resistance to bending, tension and torsion. There were evaluated changes in the concentration of bones markers, changes in the bone mineral density and changes in lean mass and adipose mass in healthy adult males of the Wistar rats . During my doctorate studies I was studying the effect of these components on the bones. In the 1st experiment the rats were fed by the chosen proteins and amino acids: glutamine (GLN), branched-chain amino acids- valine, leucine and izoleucine (BCAA), and caseine (KAS) ad libitum. Further we monitored the effect of one-week realimantation by standard laboratory diet (SLD) after long-term supplementation by the diet enriched by the above mentioned proteins and amino acids. The group fed by SLD ad libitum was the control group. In the 2nd experiment the effect of paired-feeding of the...
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The effect of nutrition on bone metabolism
Kubíková, Klára ; Kutílek, Štěpán (referee)
The effect of nutrition on bone metabolism The bone has a function for support and protection, and is also a place for hematopoiesis and for mineral homeostasis. The subject of interest of this thesis is to evaluate the effect of chosen proteins, amino acids, iron and the conditions such as long-term under-nutrition, short-term starving and repeated blood withdrawals on the bone parameters - the length and the diameter of the bone, the width of corticalis, and the mechanical properties - resistance to bending, tension and torsion. There were evaluated changes in the concentration of bones markers, changes in the bone mineral density and changes in lean mass and adipose mass in healthy adult males of the Wistar rats . During my doctorate studies I was studying the effect of these components on the bones. In the 1st experiment the rats were fed by the chosen proteins and amino acids: glutamine (GLN), branched-chain amino acids- valine, leucine and izoleucine (BCAA), and caseine (KAS) ad libitum. Further we monitored the effect of one-week realimantation by standard laboratory diet (SLD) after long-term supplementation by the diet enriched by the above mentioned proteins and amino acids. The group fed by SLD ad libitum was the control group. In the 2nd experiment the effect of paired-feeding of the...
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The effect of serum 25-hydroxycholekalciferol levels on musculoskeletal system in children with inflammatory bowel disease
Maratová, Klára ; Šumník, Zdeněk (advisor) ; Zapletalová, Jiřina (referee) ; Kutílek, Štěpán (referee)
The effect of serum 25-hydroxycholekalciferol levels on musculoskeletal system in children with inflammatory bowel disease Background: Low bone mineral density and osteoporosis represent severe secondary complications that can be a result of childhood chronic disease. According to Frost's mechanostat theory impaired muscle functions may contribute to the changes observed on the skeleton. Aims: The aim of this study was to: 1) evaluate parameters of bone mineral density, bone geometry and dynamic muscle functions in children and adolescent with chronic disease - inflammatory bowel disease (IBD) and type 1 diabetes (T1D); 2) evaluate a possible effect of vitamin D deficiency and vitamin D supplementation or duration of the disease on the musculoskeletal unit; 3) determine clinical or laboratory predictors of muscle and bone parameters. Methods: The study was divided into two substudies according to the diagnosis. Seventy patients with IBD (median age 13.8 years) were included in one study, fifty-five of which completed all of the planned procedures. During the study, IBD patients were supplemented with 2000 IU/d of vitamin D. In the second study 95 patients with T1D were included (median age 16.4 years). BMD and bone geometry of non-dominant tibia was evaluated using peripheral quantitative computed...
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Changes in Bone and Mineral Metabolism and the Role of Vitamin D in Very Low Birth Weight Infants
Matějek, Tomáš ; Skálová, Sylva (advisor) ; Šumník, Zdeněk (referee) ; Kutílek, Štěpán (referee)
Changes in bone and mineral metabolism and the role of vitamin D in very low birth weight infants. Firstly, the aim of dissertation work was to estimate physiological parathyroid hormone (PTH) levels and their relationship with bone metabolism parameters in otherwise healthy preterm newborns with birth weight 1000-1500 g. Secondly, to evaluate vitamin D status in mothers and their very low birth weight infants (VLBW) at birth and at discharge with currently recommended supplementation of vitamin D. Thirdly, to compare clinical outcomes of VLBW infants with 25-hydroxy vitamin D [25(OH)D] levels ≤ and > 25 nmol/l in umbilical cord blood and finally to evaluate umbilical cord vitamin D as a risk factor for respiratory distress syndrome in preterm infants. It is a set of prospective observational studies involving immature newborns with birth weight below 1500 g. The parameters of mineral and bone metabolism were analysed in umbilical cord blood and newborn serum and urine during hospitalisation (PTH, 25-hydroxy vitamin D, S-Ca, S-P, ALP, U-Ca, U-P) and in pregnant women before delivery (25-hydroxy vitamin D). Bone mineralization was evaluated by bone densitometry. In a pilot study, from the total 134 examined serum samples for PTH levels the estimated reference range was 1.6 - 9.3 pmol/l. From the...
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The effect of nutrition on bone metabolism
Švejkovská, Klára ; Živná, Helena (advisor) ; Horák, Pavel (referee) ; Kutílek, Štěpán (referee)
The effect of nutrition on bone metabolism The bone has a function for support and protection, and is also a place for hematopoiesis and for mineral homeostasis. The subject of interest of this thesis is to evaluate the effect of chosen proteins, amino acids, iron and the conditions such as long-term under-nutrition, short-term starving and repeated blood withdrawals on the bone parameters - the length and the diameter of the bone, the width of corticalis, and the mechanical properties - resistance to bending, tension and torsion. There were evaluated changes in the concentration of bones markers, changes in the bone mineral density and changes in lean mass and adipose mass in healthy adult males of the Wistar rats . During my doctorate studies I was studying the effect of these components on the bones. In the 1st experiment the rats were fed by the chosen proteins and amino acids: glutamine (GLN), branched-chain amino acids- valine, leucine and izoleucine (BCAA), and caseine (KAS) ad libitum. Further we monitored the effect of one-week realimantation by standard laboratory diet (SLD) after long-term supplementation by the diet enriched by the above mentioned proteins and amino acids. The group fed by SLD ad libitum was the control group. In the 2nd experiment the effect of paired-feeding of the...
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The effect of nutrition on bone metabolism
Kubíková, Klára ; Kutílek, Štěpán (referee)
The effect of nutrition on bone metabolism The bone has a function for support and protection, and is also a place for hematopoiesis and for mineral homeostasis. The subject of interest of this thesis is to evaluate the effect of chosen proteins, amino acids, iron and the conditions such as long-term under-nutrition, short-term starving and repeated blood withdrawals on the bone parameters - the length and the diameter of the bone, the width of corticalis, and the mechanical properties - resistance to bending, tension and torsion. There were evaluated changes in the concentration of bones markers, changes in the bone mineral density and changes in lean mass and adipose mass in healthy adult males of the Wistar rats . During my doctorate studies I was studying the effect of these components on the bones. In the 1st experiment the rats were fed by the chosen proteins and amino acids: glutamine (GLN), branched-chain amino acids- valine, leucine and izoleucine (BCAA), and caseine (KAS) ad libitum. Further we monitored the effect of one-week realimantation by standard laboratory diet (SLD) after long-term supplementation by the diet enriched by the above mentioned proteins and amino acids. The group fed by SLD ad libitum was the control group. In the 2nd experiment the effect of paired-feeding of the...
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