Nicotine yog ib qho alkaloid tshwm sim nyob rau hauv cov nroj tsuag luam yeeb. Nws yog ib qho tseem ceeb hauv ntau yam khoom haus luam yeeb thiab nicotine, nrog rau cov luam yeeb, luam yeeb, luam yeeb, thiab e-luam yeeb. Nkag siab txog cov tshuaj nicotine thiab nws cov teebmeem ntawm lub hlwb yog qhov tseem ceeb rau kev tuav nws lub luag haujlwm hauv cov khoom no thiab nws cov kev cuam tshuam rau kev noj qab haus huv.
Chemical Properties:
Structure: Nicotine yog ib qho chaw muaj nitrogen nrog cov tshuaj formula C₁₀H₁₄N₂. Nws belongs rau ib chav kawm ntawm cov tshuaj hu ua alkaloids, uas paub txog lawv cov teebmeem physiological rau tib neeg thiab tsiaj txhu.
Daim ntawv: Hauv nws daim ntawv ntshiab, nicotine yog ib qho tsis muaj xim, oily kua uas tig xim av thaum raug huab cua. Nws muaj ib tug muaj zog, yam ntxwv tsw.
Nicotine cuam tshuam rau lub hlwb li cas:
Mechanism: Nicotine feem ntau cuam tshuam rau lub hlwb los ntawm kev txhawb kev tso tawm cov neurotransmitters, tshwj xeeb tshaj yog dopamine. Nws khi rau nicotinic acetylcholine receptors (nAChRs) hauv lub hlwb. Cov receptors no yog ib feem ntawm cholinergic system, uas koom nrog ntau lub hlwb ua haujlwm, suav nrog nqi zog, kev saib xyuas, thiab kev nco.
Dopamine Tso Tawm: Los ntawm kev khi rau nAChRs, nicotine ua rau kev tso tawm ntawm dopamine, neurotransmitter cuam tshuam nrog kev txaus siab thiab nqi zog. Qhov kev tso tawm no ua rau muaj kev txhawb zog ntxiv ntawm nicotine, ua rau nws ntxiv.
Cov txiaj ntsig kev paub: Nicotine tuaj yeem txhim kho kev mloog, kev kawm, thiab kev nco hauv lub sijhawm luv. Nws kuj tseem tuaj yeem ua rau muaj kev xav zoo siab lossis so kom txaus, uas ua rau nws muaj zog ntxiv.