Konupūmā Āra Ketoglutarate (AKG) He matū takawaenga o te huringa waikawa tricarboxylic, ā, e whai wāhi ana ki te hanga i ngā waikawa amino, ngā huaora me ngā waikawa waro me te pākia o te pūngao. Ka taea te whakamahi hei tāpiringa kai, ā, he whānui ngā tono. Haunga ōna mahi koiora i roto i te tinana tangata, he whānui te whakamahinga o te konupūmā alpha-ketoglutarate i roto i te mara rongoā, ā, kua noho hei wāhanga nui o te maha o ngā hua hauora me ngā otinga hauora.
He aha te alpha-ketoglutarate?
He matū takawaenga ā-roto tūturu te AKG, he wāhanga o te huringa Krebs, arā, ko ō tātou ake tinana e hanga ana. Ka hangaia hoki e te umanga tāpiringa he putanga hangai he rite te matū ki te AKG i hangaia ā-taiao.
He aha te mahi a AKG?
He ngota ngota te AKG e uru ana ki ngā ara maha o te pākia me te pūtau. He kaituku pūngao, he matū mua mō te hanga waikawa amino me te ngota tohu pūtau, ā, he kaiwhakahaere hoki mō ngā tukanga epigenetic. He ngota matua i roto i te huringa Krebs, e whakahaere ana i te tere whānui o te huringa waikawa citric o te rauropi. Ka mahi i roto i ngā ara maha o te tinana hei āwhina i te hanga uaua me te āwhina i te whakaora patunga, koinei tētahi o ngā take i rongonui ai i roto i te ao hanga tinana.
He kaihoroi hauota anō hoki a AKG, e ārai ana i te nui rawa o te hauota, me te ārai hoki i te nui rawa o te haukini. He puna pai hoki ia mō te glutamate me te glutamine, e whakaoho ana i te hanganga pūmua i roto i ngā uaua, e ārai ana hoki i te pakaru o te pūmua.
Hei tāpiritanga, ka whakahaere i te whākōkī 10-11 translocation (TET) e whai wāhi ana ki te demethylation DNA me te lysine demethylase kei roto i te rohe Jumonji C, koinei te histone demethylase matua. Nō reira, he mea nui ia ki te whakahaere me te whakapuaki ira.
Ka taea e AKG te whakaroa i te koroheketanga?
He taunakitanga kei te pā te AKG ki te koroheketanga, ā, he maha ngā rangahau e whakaatu ana koinei te āhua. I whakaatuhia e tētahi rangahau i te tau 2014 i whakaroa ake te AKG i te roa o te oranga o ngā C. elegans pakeke mā te 50% pea mā te aukati i te ATP synthase me te ūnga o te rapamycin (TOR).
I roto i tēnei rangahau, i kitea e mātou kāore a AKG e whakaroa noa i te roa o te oranga engari ka whakaroa hoki i ētahi momo āhua e pā ana ki te koroheketanga, pērā i te ngaronga o ngā nekehanga tinana tere kua taungahia e kitea ana i roto i ngā C. elegans kua pakeke. Hei mārama ki te pānga o AKG ki te koroheketanga, ka whakaahuahia e mātou ngā tikanga e aukati ai a AKG i te ATP synthase me te TOR kia whakaroa ake ai te roa o te oranga i roto i ngā C. elegans me ētahi atu momo pea.
Te mahi a te konupūmā alpha-ketoglutarate
Tuatahi, he mahi nui tā te konupūmā alpha-ketoglutarate i roto i te pākia o te pūngao. Hei hua takawaenga o te huringa waikawa tricarboxylic (huringa TCA), ka whai wāhi te konupūmā α-ketoglutarate ki te tukanga whakaputa pūngao ā-roto. Mā roto i te huringa TCA, ka waikurahia, ka wetewetehia hoki ngā matūkai pēnei i te warowaihā, te ngako, me ngā pūmua hei whakaputa ATP (adenosine triphosphate) hei whakarato pūngao mō ngā pūtau. Hei takawaenga nui i roto i te huringa TCA, ka taea e te konupūmā α-ketoglutarate te whakatairanga i te pākia o te pūngao pūtau, te whakanui ake i te taumata pūngao o te tinana, te āwhina i te whakarei ake i te kaha tinana me te manawanui, me te whakapai ake i te ngenge tinana.
Tuarua, he mahi nui tā te konupūmā α-ketoglutarate i roto i te pākia o ngā waikawa amino. Ko ngā waikawa amino ngā waeine taketake o te pūmua, ā, kei roto te konupūmā α-ketoglutarate i te hurihanga me te pākia o ngā waikawa amino. I roto i te tukanga hurihanga o ngā waikawa amino ki ētahi atu matūkai, ka whakawhiti te konupūmā α-ketoglutarate me ngā waikawa amino hei whakaputa waikawa amino hou, waikawa α-keto rānei, ā, ka whakahaere i te taurite me te whakamahinga o ngā waikawa amino. Hei tāpiri, ka taea hoki e te konupūmā α-ketoglutarate te mahi hei papa whakapūngao mō ngā waikawa amino, te whai wāhi ki te pākia o ngā waikawa amino, me te whakaputa pūngao me te hauhā waro. Nō reira, he mea nui te konupūmā α-ketoglutarate ki te pupuri i te homeostasis o ngā waikawa amino me te pākia o te pūmua i roto i te tinana.
Hei tāpiritanga, he mahi ātete-waikawa te konupūmā ā-ira-ketoglutarate e tango ana i ngā rauropi kore utu, e tiaki ana hoki i ngā pūtau mai i te kino waikura. I taua wā anō, ka taea hoki e te konupūmā ā-ira-ketoglutarate te whakahaere i te mahi a te pūnaha ārai mate, te whakatairanga i te whakahohenga me te tipu haere o ngā pūtau ārai mate, me te whakarei ake i te ātete o te tinana ki ngā mate me ngā mate pāwera. Nō reira, he mea nui te konupūmā ā-ira-ketoglutarate ki te pupuri i te taurite ārai mate o te tinana me te ātete ki ngā mate.
Rangahau mō ngā pānga o te konupūmā α-ketoglutarate ki te koroheketanga
Ka pāngia tātou katoa e te koroheketanga, ā, he take mōrearea hoki mō te maha o ngā mate, ā, e ai ki ngā tatauranga taupori o te umanga Medicare, ka piki ake te tūponotanga o te pāngia e te mate i te kaumātuatanga.
He matū nui te konupūmā alpha-ketoglutarate i roto i te tinana, e mōhiotia ana mō te mahi a te pūtau i roto i te huringa Krebs, he huringa e tika ana mō te waikura o ngā waikawa ngako me ngā waikawa amino, e āhei ai ngā mitochondria ki te whakaputa ATP (ko te ATP te puna pūngao o ngā pūtau).
Ko tēnei e uru ana ki te utaina o te tukanga konupūmā alpha-ketoglutarate, kia taea ai hoki te huri i te konupūmā alpha-ketoglutarate hei glutamate, kātahi hei glutamine, ka taea te āwhina i te whakaoho i te hanganga o te pūmua me te collagen (he pūmua muka A te collagen e hanga ana i te 1/3 o ngā pūmua katoa i roto i te tinana, ā, ka āwhina i te tautoko i te hauora o te wheua, te kiri me te uaua).
He whānuitia ngā whakamahinga o te konupūmā α-ketoglutarate, hei tāpiringa kai maha-mahi, i roto i ngā hua hauora. Nā ōna mahi koiora maha pērā i te ārai-pakeketanga, te ārai-koroheketanga, te whakahaere i te ārai mate me te pākia o ngā waikawa amino, ka waiho hei taputapu kaha hei whakapai ake i te hauora o te tangata. Nā te piki haere o te mōhiotanga ki te tiaki hauora me te hohonu haere o te rangahau pūtaiao, e whakaponohia ana ka nui ake te aro me te whanaketanga o te whakamahinga o te konupūmā α-ketoglutarate i roto i te mara o ngā hua hauora.
Whakakape: He kōrero whānui noa iho tēnei tuhinga, kaua e whakamāramatia he tohutohu hauora. Ko ētahi o ngā kōrero o te pou rangitaki i ahu mai i te Ipurangi, ehara i te mea ngaio. Ko tā tēnei paetukutuku anake he whakarōpū, he whakatakotoranga me te whakatika i ngā tuhinga. Ko te kaupapa o te kawe atu i ētahi atu kōrero, ehara i te mea e whakaae ana koe ki ōna tirohanga, e whakaū ana rānei i te pono o ōna ihirangi. Me kōrero tonu ki tētahi tohunga hauora i mua i te whakamahi i tētahi tāpiringa, i te hanga rānei i ngā huringa ki tō tikanga tiaki hauora.
Wā tuku: Oketopa-15-2024
