National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Role of the cannabinoid system in neurodegenerative processes
Akantisová, Lucia ; Novotný, Jiří (advisor) ; Búran, Peter (referee)
The endocannabinoid system (ECD) is involved in a significant number of physiological functions in the central and peripheral nervous system. The ECD consists of cannabinoid receptors (CB1 and CB2), endogenous ligands (ANA, 2-AG) and the enzymatic apparatus required for their synthesis (NAPE and DAGL) and degradation (FAAH, MAG). In the human brain, the cannabinoid receptor CB1 is the most widespread of the group of receptors that bind to G proteins. The signaling mechanisms of these proteins contribute to the overall homeostasis of the organism. With their activity, they affect the concentrations of second messengers, the activity of ion channels, the release of neurotransmitters, and regulate immune responses. In this context, studies in the last 20 years have focused on research in the field of neurodegenerative diseases. Today, i tis known that treatment with cannabinoid compounds improves neurological deficits associated with neuronal damage and alleviates inflammatory processes in animal models of Alzheimer's disease, Parkinson's disease and multiple sclerosis. At the clinical level, treatment with cannabinoids has helped with certain accompanying symptoms occuring in neurodegenerative diseases such as neuropathic pain, insomnia and spasticity. Key words: endocannabinoid system, cannabinoids,...
Mechanisms of symmetry breaking during embryogenesis
Ždímalová, Michaela ; Lánský, Zdeněk (advisor) ; Búran, Peter (referee)
Left-right symmetry breaking is crucial for correct body development of many organisms, including humans. The fact that the left-right asymmetry is established consistently in all healthy individuals of given species fascinates researchers for a long time. Although several models offering a mechanistic insight to this phenomenon were proposed or already accepted, they lack a sufficient molecular description or do not explain all cases. A model of acto-myosin flows - intracellular counter-rotating flows driven by an active torque generation in acto-myosin cortex - leading to the left-right symmetry breaking during embryogenesis is a topic of particular interest in current research. This thesis introduces the problematics of acto-myosin flows in a context of the previous research related to the left-right symmetry breaking. Since the left-right asymmetry is tightly associated with chirality at different scales, this thesis also discusses the current knowledge about possible processes of propagating chirality of molecules to the larger scale. 1
Effect of amyloid β on the function of endosomes and lysosomes
Tmějová, Monika ; Rudajev, Vladimír (advisor) ; Búran, Peter (referee)
Amyloid β peptide is produced by proteolytic processing of amyloid precursor protein. Accumulation of toxic Aβ in lysosomes and endosomes is considered to be one of the earliest signs of Alzheimer disease. Alzherimer disease was first described in 1907 by doctor Alois Alzheimer. This disease is most common in elderly people over the age of 65 and it is currently the most common cause of dementia. Although significant progress has been made in recent years, the key mechanism of formation of senile plaques and neurofibrillary tangles still remains unclear. Vesicular trafficking plays fundamental role in regulation of APP and generation of Aβ. This thesis summarizes molecular mechanisms of pathological effect of Aβ on the endolysosomal complex.

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4 Buráň, Pavel
4 Buráň, Petr
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