I-Dopamine yi-neurotransmitter enomdla edlala indima ebalulekileyo kumvuzo wengqondo kunye namaziko olonwabo. Ihlala ibizwa ngokuba yikhemikhali “yokuziva ulungile”, inoxanduva lweenkqubo ezahlukeneyo zomzimba nezengqondo eziphembelela imo yethu yonke, inkuthazo, kunye nokuziphatha okukhobokisayo.
IDopamine, edla ngokubizwa ngokuba yi "feel good" neurotransmitter, yaqala ukufunyanwa ngoo-1950 ngusosayensi waseSweden uArvid Carlsson. Ihlelwa njenge-monoamine neurotransmitter, oku kuthetha ukuba sisithunywa sekhemikhali esithwala imiqondiso phakathi kweeseli zemithambo-luvo. I-Dopamine iveliswa kwiindawo ezininzi zobuchopho, kubandakanya i-substantia nigra, indawo ye-ventral tegmental, kunye ne-hypothalamus yengqondo.
Umsebenzi ophambili we-dopamine kukuhambisa imiqondiso phakathi kwe-neuron kunye nefuthe kwimisebenzi eyahlukeneyo yomzimba. Kucingelwa ukulawula ukunyakaza, iimpendulo zeemvakalelo, inkuthazo, kunye neemvakalelo zolonwabo kunye nomvuzo. I-Dopamine ikwadlala indima ebalulekileyo kwiinkqubo ezahlukeneyo zokuqonda ezifana nokufunda, inkumbulo, kunye nokuqwalaselwa.
Xa i-dopamine ikhutshwa kwiindlela zomvuzo wengqondo, ivelisa iimvakalelo zolonwabo okanye ulwaneliseko.
Ngexesha lolonwabo kunye nomvuzo, sivelisa izixa ezikhulu ze-dopamine, kwaye xa amanqanaba ephantsi kakhulu, siziva singakhuthazwa kwaye singenakunceda.
Ukongeza, inkqubo yomvuzo wengqondo ibotshelelwe ngokusondeleyo kwi-dopamine. Indima yee-neurotransmitters kukukhuthaza iimvakalelo zolonwabo kunye nokomelezwa, ngaloo ndlela kuvelisa inkuthazo. Ukusityhala ukuba sifezekise iinjongo zethu kwaye sifune umvuzo.
I-Dopamine iveliswa kwiindawo ezininzi zobuchopho, kubandakanya i-substantia nigra kunye ne-ventral tegmental area. Ezi ndawo zisebenza njengemizi-mveliso ye-dopamine, ivelisa kwaye ikhuphe le neurotransmitter kwiindawo ezahlukeneyo zobuchopho. Nje ukuba ikhululwe, i-dopamine ibophelela kwii-receptors ezithile (ezibizwa ngokuba yi-dopamine receptors) ezibekwe kumphezulu weseli eyamkelayo.
Kukho iindidi ezintlanu ze-dopamine receptors, ezibhalwe D1 ukuya kwi-D5. Uhlobo ngalunye lwe-receptor lubekwe kwindawo yobuchopho eyahlukileyo, ivumela i-dopamine ukuba ibe nemiphumo eyahlukileyo. Xa i-dopamine ibophelela kwi-receptor, iyavuyisa okanye ivimbele umsebenzi weseli efumanayo, kuxhomekeke kuhlobo lwe-receptor olufakwe kuyo.
I-Dopamine idlala indima ebalulekileyo ekulawuleni intshukumo kwindlela ye-nigrostriatal. Kule ndlela, i-dopamine inceda ukulawula kunye nokulungelelanisa umsebenzi wezihlunu.
Kwi-prefrontal cortex, i-dopamine inceda ukulawula imemori yokusebenza, isivumela ukuba sibambe kwaye sisebenzise ulwazi ezingqondweni zethu. Ikwadlala indima ekuqwalaselweni nasekuthatheni izigqibo. Ukungalingani kumanqanaba e-dopamine kwi-prefrontal cortex inxulunyaniswe neemeko ezinje ngokusilela kuqwalaselo lwe-hyperactivity disorder (ADHD) kunye ne-schizophrenia.
Ukukhutshwa kunye nokulawulwa kwe-dopamine kulawulwa ngokuqinileyo yingqondo ukugcina ibhalansi kunye nokuqinisekisa ukusebenza okuqhelekileyo. Inkqubo entsonkothileyo yeendlela zokuphendula, ezibandakanya ezinye ii-neurotransmitters kunye nemimandla yobuchopho, ilawula amanqanaba e-dopamine.
I-Dopamine sisithunywa sekhemikhali, okanye i-neurotransmitter, kwingqondo ephethe imiqondiso phakathi kweeseli zemithambo-luvo. Idlala indima ebalulekileyo kwimisebenzi eyahlukahlukeneyo yobuchopho, kubandakanywa nokulawula ukunyakaza, isimo sengqondo, kunye neempendulo zeemvakalelo, okwenza kube yinto ebalulekileyo kwimpilo yethu yengqondo. Nangona kunjalo, ukungalingani kumanqanaba e-dopamine kunokukhokelela kwimiba eyahlukeneyo yempilo yengqondo.
●Uphando lubonisa ukuba abantu abanoxinzelelo banokuba namanqanaba asezantsi e-dopamine kwiindawo ezithile zobuchopho, okukhokelela ekunciphiseni inkuthazo kunye nolonwabo kwimisebenzi yemihla ngemihla.
●Amanqanaba e-dopamine angalinganiyo angakhokelela kukuphazamiseka kwexhala. Ukonyuka komsebenzi we-dopamine kwiindawo ezithile zobuchopho kunokukhokelela ekwandeni koxinzelelo kunye nokungazinzi.
●Umsebenzi ogqithisileyo we-dopamine kwimimandla ethile yobuchopho kucingelwa ukuba inegalelo kwiimpawu ze-schizophrenia, ezinje ngemibono kunye nenkohliso.
●Iziyobisi kunye nokuziphatha okukhobokisayo zihlala zonyusa amanqanaba e-dopamine kwingqondo, ebangela ukonwaba kunye neemvakalelo ezinomvuzo. Ngokuhamba kwexesha, ingqondo ixhomekeke kwezi zinto okanye indlela yokuziphatha ukukhulula i-dopamine, idala umjikelo wokulutha.
Umbuzo: Ngaba amayeza angasetyenziselwa ukulawula amanqanaba e-dopamine?
A: Ewe, amayeza athile, afana ne-dopamine agonists okanye i-dopamine reuptake inhibitors, asetyenziselwa ukunyanga iimeko ezinxulumene ne-dopamine dysregulation. La mayeza anokunceda ukubuyisela ibhalansi ye-dopamine kwingqondo kunye nokunciphisa iimpawu ezinxulumene neemeko ezifana nesifo sika-Parkinson okanye ukudakumba.
Umbuzo: Umntu unokuyigcina njani ibhalansi ye-dopamine enempilo?
A: Ukugcina impilo esempilweni, kubandakanya umthambo rhoqo, ukutya okunesondlo, ukulala ngokwaneleyo, kunye nolawulo loxinzelelo, kunokuba negalelo kulawulo olufanelekileyo lwe-dopamine. Ukuthatha inxaxheba kwimisebenzi eyonwabisayo, ukuseta usukelo olufikelelekayo, kunye nokuziqhelanisa nokuqaphela kunokunceda ukugcina ulungelelwaniso lwe-dopamine olusempilweni.
Ukuziphendulela: Eli nqaku lenzelwe iinjongo zolwazi kuphela kwaye akufanele lithathwe njengengcebiso yezonyango. Soloko udibana nengcali yezempilo phambi kokuba usebenzise naziphi na izongezo okanye utshintshe irejimeni yokhathalelo lwempilo yakho.
Ixesha lokuposa: Sep-15-2023