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The role of intestinal microbiota in the development of Alzheimer's dementia
Hakenová, Kristina ; Valeš, Karel (advisor) ; Vodička, Martin (referee)
Preserving health at a higher age depends on the function of biological homeostatic systems (neural endocrine and immune activities), where the biological interaction between these systems and the intestinal microflora plays a key role. One of the most serious diseases associated with aging is Alzheimer's dementia (AD) and it is the most common cause of dementia in the world. This disease is accompanied by cognitive impairment associated with accumulation of amyloid plaques and neurofibrillary fibres in brain tissue. Naturally, biological changes occur during the process of aging, resulting in reduced functional capacity of the organism, accompanied by an increased risk of inflammatoryprocesses involved in the etiology of several chronic, pathologies, including neurodegenerative processes. These modulatory processes are associated with oxidative stress and intestinal dysbiosis. It is already well documented in the scientific literature that significant changes in the composition of intestinal microbiota occur in aging. These changes can lead to several biological changes, including increased permeability of the intestinal barrier, thereby causing the increased penetration of many biologically active substances into the body. This may be a risk factor for the development of inflammation in both...
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Influence of intestinal microbiota on development of neurodegenerative diseases
Hakenová, Kristina ; Valeš, Karel (advisor) ; Vodička, Martin (referee)
Aging is associated with natural biological changes, which result in a decrease in the functional capacity of the body, which is also accompanied by an increased incidence of inflammatory processes that contribute to the development of neurodegeneration. The intestinal microbiota and its interaction with the intestine and the central nervous system play a key role in maintaining the function of biological homeostatic systems at an older age. This opens the possibility of influencing or modifying human microbiota for the development of therapeutic strategies. Based on the analysis of stool samples by HPLC MS / MS, the study confirmed the effect of selected probiotics on the modification of metabolic pathways and the proper functioning of the microbiota per se. The greatest effects were observed on tyrosine metabolism, tryptophan metabolism, arachidonic acid metabolism and bile acid biosynthesis metabolism. A positive effect of selected probiotic bacteria was found in the memory component of cognitive functions. Significant improvements were observed in verbal learning and verbal memory. In subjects with mild cognitive impairment, the progression of cognitive deficit has been slowed. Significant improvement was also observed for executive functions. These findings were not followed by a subjective...
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The role of intestinal microbiota in the development of Alzheimer's dementia
Hakenová, Kristina ; Valeš, Karel (advisor) ; Vodička, Martin (referee)
Preserving health at a higher age depends on the function of biological homeostatic systems (neural endocrine and immune activities), where the biological interaction between these systems and the intestinal microflora plays a key role. One of the most serious diseases associated with aging is Alzheimer's dementia (AD) and it is the most common cause of dementia in the world. This disease is accompanied by cognitive impairment associated with accumulation of amyloid plaques and neurofibrillary fibres in brain tissue. Naturally, biological changes occur during the process of aging, resulting in reduced functional capacity of the organism, accompanied by an increased risk of inflammatoryprocesses involved in the etiology of several chronic, pathologies, including neurodegenerative processes. These modulatory processes are associated with oxidative stress and intestinal dysbiosis. It is already well documented in the scientific literature that significant changes in the composition of intestinal microbiota occur in aging. These changes can lead to several biological changes, including increased permeability of the intestinal barrier, thereby causing the increased penetration of many biologically active substances into the body. This may be a risk factor for the development of inflammation in both...
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