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The role of epigenetic mechanisms in the development of drug dependence
Durdilová, Marie ; Novotný, Jiří (advisor) ; Janoušková, Alena (referee)
The abuse of addictive substances is widely spread and carries numerous negative impacts, both on individuals and their surroundings. Some substances can lead to addiction after just a few doses, while for others, it may be a more prolonged process. However, the result is generally similar, with the prioritization of the drug or activity becoming the individual's main focus in life. This shift in priorities is linked to increased dopamine production due to the substance's effects, and the modulation of reward circuits in the brain. Changes in the connectivity and excitability of neurons in the mesolimbic and mesocorticolimbic dopamine systems lead to the development and maintenance of addiction. These neuronal changes are maintained in the body through epigenetic remodeling of chromatin. The pattern of epigenetic modifications, characteristic for a specific type of abused substance, can be passed on to the next generation, thereby increasing the potential for addiction development in offspring. Research on epigenetic modifications associated with addiction provides us with a deeper understanding of the neurophysiological changes accompanying drug addiction. At the same time, it raises the question of further treatment possibilities for drug addiction by targeting the epigenetic modifications that...
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The abuse of sedatives and hypnotics from the user's perspective
Rokosová, Kateřina ; Šťastná, Lenka (advisor) ; Minařík, Jakub (referee)
Background: Sedatives and hypnotics are substances to calm or relieve anxiety and to induce sleep. Long term prescription of benzodiazepines/Z-drugs may lead to the development of tolerance and the need to increase the dose. It is important to be aware of the risks of uncontrolled use of these drugs, such as harmful interactions with other substances, side effects and potential for abuse or addiction. Aim: The aim of this research was to describe abuse of sedatives and hypnotics from the user's perspective, to focus on circumstances leading to drug abuse, to describe beginning and course of the use of these drugs and self-awareness of the problem. The aim was also to describe the current state of users and their needs. Sample: The research sample consisted of 6 participants, of which 4 women and 2 men currently or recently using sedatives and hypnotics (specifically benzodiazepines/Z-drugs). Methods: Data were collected through a qualitative approach using a semi-structured interview. Interviews were conducted, rewritten into protocol summary, further analysed using thematic analysis, modified using open and axial coding and categorization methods. Results: Respondents may have misused sedatives and hypnotics to self-medicate symptoms. These drugs were prescribed for the first time with...
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