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  1. It is unclear, however, how nicotine interacts with positive symptoms, as it would follow from this theory that nicotine would exacerbate excess dopamine in the mesolimbic pathway and thus positive symptoms as well. One theory argues that the beneficial effects of nicotine on negative symptoms outweigh possible exacerbation of positive symptoms.

  2. en.wikipedia.org › wiki › SerotoninSerotonin - Wikipedia

    In animals including humans, serotonin is synthesized from the amino acid L-tryptophan by a short metabolic pathway consisting of two enzymes, tryptophan hydroxylase (TPH) and aromatic amino acid decarboxylase (DDC), and the coenzyme pyridoxal phosphate. The TPH-mediated reaction is the rate-limiting step in the pathway.

  3. Estudos. Estudos clínicos rigorosos ainda são necessários para se avaliar o potencial clínico do canabidiol para condições específicas. [9] Entretanto, pesquisas pré-clínicas (incluído culturas celulares e modelos animais) têm mostrado que o canabidiol tem diversos efeitos que podem ser úteis terapeuticamente.

  4. An electronic cigarette is an electronic device that simulates tobacco smoking.It consists of an atomizer, a power source such as a battery, and a container such as a cartridge or tank.

  5. en.wikipedia.org › wiki › LibidoLibido - Wikipedia

    Libido is governed primarily by activity in the mesolimbic dopamine pathway (ventral tegmental area and nucleus accumbens). Consequently, dopamine and related trace amines (primarily phenethylamine) that modulate dopamine neurotransmission play a critical role in regulating libido.

  6. en.wikipedia.org › wiki › GhrelinGhrelin - Wikipedia

    Ghrelin (/ ˈ ɡ r ɛ l ɪ n /; or lenomorelin, INN) is a hormone produced by enteroendocrine cells of the gastrointestinal tract, especially the stomach, and is often called a "hunger hormone" because it increases the drive to eat.

  7. Storage. Neurotransmitters are generally stored in synaptic vesicles, clustered close to the cell membrane at the axon terminal of the presynaptic neuron. However, some neurotransmitters, like the metabolic gases carbon monoxide and nitric oxide, are synthesized and released immediately following an action potential without ever being stored in vesicles.

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