Posts Tagged ‘nicotine’
Snuff
The snuff is a plant product obtained from the leaves of various plants of the genus Nicotine, namely Nicotiana tabacum). Is consumed in various forms, the main drag. His particular nicotine content makes it addictive. Lawfully marketed worldwide but has many restrictions to smoke in many countries since it has adverse effects on public health.
Its composition is formed by the alkaloid nicotine, found in the leaves in varying proportions (from less than 1% to 12%). The rest is called bitumen, a dark and sticky substance composed of various chemicals, many of which are generated as a result of combustion (hydrogen cyanide, carbon monoxide, carbon dioxide, nitrogen oxide, ammonia, etc. )
Nicotine coaxes the brain
Researchers point out that environmental signals stimulate craving.
Researchers found that nicotine, the addictive component in cigarettes, “fool” the brain and memory to create associations between environmental cues and smoking behavior. This may explain why former smokers miss when lighting a cigarette in a bar or after eating.
The findings of researchers from Baylor College of Medicine published in the September 10 edition of the journal Neuron.
“Our brain normally establishes these associations between things that give support to our existence and environmental signals so that we have behaviors that lead us to have successful lives. The brain sends a signal of reward when we act in a way that contributes to our welfare “said co-author, Dr. John A. Dani, professor of neuroscience at BCM, in a press release from the university. “However, nicotine usurps this subconscious learning process in the brain, so we started to behave as if smoking was a positive action.” Read the rest of this entry »
Direct contact with nicotine can cause tissue irritation
A team of researchers from the Consejo Superior de Investigaciones Científicas (CSIC) has participated in research that has shown that direct contact with nicotine may produce localized irritation, sources from the institution in Valencia.
Experts have found that nicotine activates a molecular receptor that is involved in the processes of inflammation and pain. This receptor, called TRPA1, is located in the nerve endings in the skin, as explained in the latest issue of the journal Nature Neuroscience.
The work, which has been tested in mice, indicates that activation of this receptor, an excitatory ion channel, may be responsible for the irritation produced by nicotine in anti smoking therapies when applied locally by nasal sprays or using patches over skin.
CSIC researcher Felix Viana of the Church said that “it was thought that the irritation produced by nicotine was due solely to stimulation of nicotine receptors already known.” “We – he continued – we have shown that nicotine can directly activate TRPA1 protein, which acts as a trigger of neuronal signals that transmit sensations of burning and pain.” Read the rest of this entry »
Cocaine consuming very Bad for Your Health
Cocaine consuming very Bad for Your Health. It works the same way as heroin and nicotine on naturally in the brain reward (dopamine) channels. The entertainment experience every time and take a clear lack of desire, or even disappear, which reinforces the obligation more.
Cocaine is a drug that makes you confident, talkative, alert, good draw for those who find it difficult, in this way is usually the feeling. However, because the drug decreases, rapidly associated with depression, anxiety and irritability with the of version. Read the rest of this entry »