Akumangalisi ukuba, ukutshaya ngexesha lokukhulelwa kuyingozi kwimpilo yomntwana: i-nicotine, kodwa kunye namanye amacandelo angawela umqobo we-placental kwaye afikelele kwi-fetus, enokubangela iingxaki zokukhula ngokomzekelo. A isifundo esitsha ibonisa ukuba ukutshaya ngexesha lokukhulelwa kunokuba nemiphumo ekusebenzeni kwe-neurons yomntwana ozayo.
INICOTINE, UKWENZAKALO LWEENKONZO ZOKUSEBENZA KWEZIGANEKO ZOKUPHILA!
Kwisibeleko sokuchaneka kwi-nicotine kwandisa umngcipheko wokwenzeka kweengozi zokukhulelwa, ukukhula kwe-intrauterine ukukhula, ukukhula kwangaphambi kwexesha, isifo sokufa komntwana ngokukhawuleza. Oku kuvezwa kunokukhokelela ekuswelekeni kwengqondo kunye nokuziphatha.
Uphononongo olutsha olwenziwe liqela lophando lwebiomedical IYunivesithi yaseHouston Akay Lab ibonisa ukuba ukutshaya ngexesha lokukhulelwa kukhokelela ekusebenzeni kakubi kwe-dopaminergic neurons kwiintsana ezisanda kuzalwa. I-Dopaminergic neurons zi-neuron ezikhupha into ethile, i-dopamine, ekwabizwa ngokuba yi-molecule yolonwabo:, enyanisweni, ibandakanyeka kwiinkqubo zomvuzo nakwizinto zokulutha.
Ngokufunda ukurekhodwa kwe-dopaminergic kunye ne-non-dopaminergic neurons ebekwe kwindawo ethile yobuchopho babantwana abasanda kuzalwa (indawo ye-ventral tegmental okanye i-VTA), abaphandi baye bakwazi ukujonga ukuba ukuvezwa kwe-nicotine kukhokelela ekwandeni kokukhululwa kwe-dopamine. .
ngenxa : Iintsana zinokuba ngamakhoboka enikotini. Izazinzulu zinethemba lokukwazi ukuqonda ukuba ezi ndlela zitshintshwa njani ukuze zinike unyango olusebenzayo kolu mlutha.
imvelaphi : Neufmois.fr/
