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Wysłany: Śro 3:21, 20 Kwi 2011
Temat postu: Children of Mothers Who Smoked During Pregnancy at
The study performed with mice is part of a project researching the behavioural and molecular mechanisms of nicotine addiction. The research project was carried out under the Academy of Finland's Research Programme on Substance Abuse and Addictions.The key observation made by the Finnish and Russian researchers in the project was that adding nicotine to the drinking water of pregnant mice led to differences between the control and nicotine-exposed offspring in terms of nicotine self-administration. Treating the dams with nicotine during the prenatal period increased the frequency of self-administration in the offspring compared to the control group,
cheap nike dunks
, even at lower doses.The study also examined the receptor-level combined effects of opioids (morphine and morphine-related compounds) and nicotine. A receptor is a human protein to which endogenous and exogenous compounds bind. Once the receptors are activated, they trigger a number of intracellular signals. The compounds that bind to a receptor may also alter or turn off the receptor signalling. The present study was conducted using cell lines that express different subtypes of nicotinic receptors. Nicotine attaches to these receptors and activates them.The results of the research project show that morphine and its related compounds, which normally attach to their own receptors, also bind to nicotinic receptors, causing altered nicotine responses. This provides a possible explanation for the common concurrent use of nicotine and other substances. The results may also pave the way for the development of new medication used to treat both smoking and drug addiction.The study was conducted as a joint Finnish-Russian project between the Division of Pharmacology and Toxicology at the University of Helsinki, the Saint Petersburg Pavlov Medical University and Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry in Moscow. The project was a concrete example of how people, research and knowledge can transcend national and cultural boundaries. The Finnish part of the project received funding from the Academy of Finland.
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