Dopamine ni neurotransmitter ishimishije igira uruhare runini mubihembo byubwonko. Akenshi bakunze kwita imiti "yumva-nziza", ishinzwe inzira zitandukanye zaba physiologique na psychologique zigira ingaruka kumyumvire yacu muri rusange, kubitera imbaraga, ndetse nimyitwarire ibiyobyabwenge.
Dopamine, bakunze kwita "kumva umeze neza" neurotransmitter, yavumbuwe bwa mbere mu myaka ya za 1950 n'umuhanga wo muri Suwede Arvid Carlsson. Yashyizwe mubikorwa nka monoamine neurotransmitter, bivuze ko ari intumwa yimiti itwara ibimenyetso hagati ya selile. Dopamine ikorerwa mubice byinshi byubwonko, harimo nigra substantia, agace ka tegmental ventrale, na hypothalamus yubwonko.
Igikorwa nyamukuru cya dopamine ni ugukwirakwiza ibimenyetso hagati ya neuron no guhindura imikorere itandukanye yumubiri. Byatekerejweho kugenga ingendo, ibisubizo byamarangamutima, gushishikara, no kumva umunezero nigihembo. Dopamine nayo igira uruhare runini mubikorwa bitandukanye byubwenge nko kwiga, kwibuka, no kwitabwaho.
Iyo dopamine irekuwe muburyo bwo guhemba ubwonko, itanga ibyishimo cyangwa kunyurwa.
Mugihe cyo kwinezeza no guhembwa, tubyara dopamine nyinshi, kandi iyo urwego ruri hasi cyane, twumva tudashishikajwe kandi tutishoboye.
Byongeye kandi, sisitemu yo guhemba ubwonko ifitanye isano rya hafi na dopamine. Uruhare rwa neurotransmitter nugutezimbere ibyiyumvo byo kwishimira no gushimangirwa, bityo bikabyara moteri. Kudusunikira kugera kuntego zacu no gushaka ibihembo.
Dopamine ikorerwa mu bice byinshi byubwonko, harimo nigra nigitereko cya tegmental. Ibi bice bikora nkinganda za dopamine, zitanga kandi zikarekura iyi neurotransmitter mubice bitandukanye byubwonko. Dopamine imaze kurekurwa, ihuza reseptor zihariye (bita dopamine reseptors) ziri hejuru ya selile yakira.
Hariho ubwoko butanu bwa reseptor ya dopamine, yanditseho D1 kugeza D5. Buri bwoko bwa reseptor buri mu karere k’ubwonko butandukanye, butuma dopamine igira ingaruka zitandukanye. Iyo dopamine ihujwe na reseptor, irashimisha cyangwa ikabuza ibikorwa by'akagari yakira, bitewe n'ubwoko bwa reseptor ifatanye.
Dopamine igira uruhare runini mugutunganya ingendo munzira ya nigrostriatal. Muri iyi nzira, dopamine ifasha kugenzura no guhuza ibikorwa byimitsi.
Muri cortex ibanza, dopamine ifasha kugenzura ububiko bwakazi, bikadufasha gufata no gukoresha amakuru mumitekerereze yacu. Ifite kandi uruhare mubitekerezo no gufata ibyemezo. Ubusumbane mu rwego rwa dopamine muri cortex ibanza byahujwe nibibazo nko kwitondera defisit hyperactivite disorder (ADHD) na schizofrenia.
Kurekura no kugenzura dopamine bigenzurwa cyane nubwonko kugirango bugumane uburimbane kandi bukore imikorere isanzwe. Sisitemu igoye yo gutanga ibitekerezo, irimo izindi neurotransmitter hamwe n'uturere twubwonko, igenga urwego rwa dopamine.
Dopamine ni ubutumwa bwimiti, cyangwa neurotransmitter, mubwonko butwara ibimenyetso hagati ya selile. Ifite uruhare runini mubikorwa bitandukanye byubwonko, harimo kugenzura ingendo, imyifatire, nibisubizo byamarangamutima, bikagira uruhare rukomeye mubuzima bwacu bwo mumutwe. Ariko, ubusumbane murwego rwa dopamine burashobora gukurura ibibazo bitandukanye byubuzima bwo mumutwe.
●Ubushakashatsi bwerekana ko abantu bafite ikibazo cyo kwiheba bashobora kuba bafite urugero rwa dopamine nkeya mu bice bimwe na bimwe byubwonko, bigatuma kugabanuka no kwishimira mubikorwa bya buri munsi.
●Urwego rwa dopamine ruringaniye rushobora gutera indwara yo guhangayika. Kongera ibikorwa bya dopamine mubice bimwe byubwonko birashobora gutuma uhangayika no guhagarika umutima.
●Igikorwa cya dopamine ikabije mu turere twihariye twubwonko gitekereza ko kigira uruhare mubimenyetso bya sizizofrenia, nka salusiyo no kwibeshya.
●Ibiyobyabwenge n'imyitwarire ibiyobyabwenge akenshi byongera urugero rwa dopamine mubwonko, bigatera amarangamutima kandi bihesha ingororano. Igihe kirenze, ubwonko buba bushingiye kuri ibyo bintu cyangwa imyitwarire kugirango irekure dopamine, itera uruziga.
Ikibazo: Imiti irashobora gukoreshwa mugutunganya urugero rwa dopamine?
Igisubizo: Yego, imiti imwe n'imwe, nka dopamine agonist cyangwa dopamine reuptake inhibitor, ikoreshwa mukuvura indwara zijyanye no kudakira dopamine. Iyi miti irashobora gufasha kugarura uburinganire bwa dopamine mu bwonko no kugabanya ibimenyetso bifitanye isano nindwara nka Parkinson cyangwa depression.
Ikibazo: Nigute umuntu yakomeza kuringaniza dopamine nziza?
Igisubizo: Kubungabunga ubuzima buzira umuze, harimo imyitozo isanzwe, indyo yintungamubiri, ibitotsi bihagije, hamwe no gucunga ibibazo, birashobora kugira uruhare mugutunganya dopamine nziza. Kwishora mubikorwa bishimishije, kwishyiriraho intego zishobora kugerwaho, no kwitoza gutekereza birashobora kandi gufasha kugumana uburimbane bwa dopamine.
Inshingano: Iyi ngingo igamije amakuru gusa kandi ntigomba gufatwa nkinama zubuvuzi. Buri gihe ujye ubaza inzobere mu by'ubuzima mbere yo gukoresha inyongera cyangwa guhindura gahunda z'ubuzima.
Igihe cyo kohereza: Nzeri-15-2023