Te Urupare Ārai Mate me te Mōhiotanga Tinana
Ko te pūnaha ārai mate tētahi o ngā tikanga ārai tino uaua, tino nui hoki o te tinana, e tiaki ana i te rauropi mai i ngā whakaekenga a ngā mate urutā pēnei i te huakita, te huaketo, te pirinoa, me te harore. Ko te urupare ārai mate e pā ana ki tētahi raupapa o ngā tukanga hihiri e uru ana ki ngā momo pūtau me ngā ngota hei mōhio me te whakangaro i ngā mea tauhou e uru ana ki te tinana. Ka matapakihia e tēnei tuhinga te āhua o te mōhio o te pūnaha ārai mate ki ngā parepare a te tinana, me pēhea tana urupare ki ngā tūmomo riri, me ētahi āhuatanga matua o tēnei tikanga.
He Kupu Whakataki ki te Whaiaro, ehara i te Whaiaro
Ko tētahi o ngā mahi matua a te pūnaha ārai mate ko tōna kaha ki te wehewehe i waenga i ngā pūtau o te tinana ake ('whaiaro') me ngā pūtau ke ('kore-whaiaro'). He mea nui tēnei kaha mō te pūnaha ārai mate ki te whakangaro i ngā mate pukupuku me te kore e whara i ngā pūtau hauora. Ko te nuinga o tēnei mōhiotanga ka tutuki mā roto i ngā ngota e kiia nei ko te Matatini Histocompatibility Matua (MHC), e kitea ana i te mata o te nuinga o ngā pūtau tinana.
Ka tukuna e te MHC ngā kongakonga pūmua, e mōhiotia ana ko ngā peptide, ki ngā pūtau-T, he wāhanga matua o te pūnaha ārai mate urutau. E rua ngā akomanga matua o te MHC: Ko te akomanga MHC I kei runga i te nuinga o ngā pūtau whai ira katoa, ā, ka tukuna ngā peptide mai i ngā pūmua ā-roto, ko te akomanga MHC II kei runga i ngā pūtau whakaatu-antigen (ngā pūtau dendritic, ngā macrophages, me ngā pūtau-B) ā, ka tukuna ngā peptide mai i ngā pūmua i tangohia mai i waho o te pūtau. Ka mōhio ngā pūtau-T ki ngā peptide e mauria ana e ēnei MHC: ki te mea nō ngā pūtau o te tinana te peptide, e kore te pūtau-T e whakahohe i tētahi urupare ārai mate. Heoi, ki te mea nō tētahi pathogen te peptide, ka whakahohehia te pūtau-T, ā, ka haere tonu te urupare ārai mate.
Te Ārai Mate ā-Whānau me te Ārai Mate Urutau
E rua ngā wāhanga matua o te pūnaha ārai mate: te ārai mate ā-roto me te ārai mate urutau. Ko te ārai mate ā-roto te rārangi tuatahi o te parenga, ā, he tere ake tana urupare engari he iti ake te motuhake, he "mahara" rānei. Ko ngā wāhanga matua o te ārai mate ā-roto ko te kiri, te kiriuhi mucosa, ngā pūtau whakapūngao (pērā i ngā macrophage me ngā neutrophils), ngā pūtau whakamate taiao (ngā pūtau NK), me ngā momo pūmua plasma pērā i te tāpiringa.
I tētahi atu taha, ka taea te mārama ki te ārai mate urutau hei rārangi parepare tuarua e puhoi ake ana te tauhohe i te tīmatanga, engari he tino motuhake ake, ā, he kaha ki te "maumahara" ki ngā mate urutā mā te mahara ārai mate. Ko ngā wāhanga matua o te pūnaha ārai mate urutau ko ngā pūtau-T me ngā pūtau-B. Ko ngā pūtau-B te kawenga mō te whakaputa paturopi motuhake ki ngā antigens, i te mea ka wehea ngā pūtau-T ki ngā pūtau-T āwhina me ngā pūtau-T cytotoxic, ia pūtau e mahi ana hei āwhina i te whakahohenga o ētahi atu pūtau me te whakangaromanga o ngā pūtau pangia.
Ngā Hipanga i roto i te Urupare Ārai Mate
He maha ngā wāhanga o te urupare ārai mate i hangaia hei tautuhi me te whakangaro i ngā mate pāwera. Ko te wāhanga tuatahi, e mōhiotia ana ko te "mātakitaki ārai mate," he tukanga e aroturuki tonu ai ngā pūtau pūnaha ārai mate mō te aroaro o ngā mate pāwera. Ina uru mai he mate pāwera ki te tinana, ka tīmata te tukanga kimi me te mōhio.
1. Te Kitenga me te Mōhio: Whai muri i te kitenga o ngā pūtau dendritic me ngā macrophage i ngā mate urutā mā te whakamahi i ngā kaiwhakawhiwhi motuhake pēnei i ngā kaiwhakawhiwhi Toll-like (TLR), ka phagocytose, ka tukatuka i ngā mate urutā. Kātahi ka tukuna e rātou ngā kongakonga o ngā mate urutā ki ngā pūtau-T mā roto i ngā ngota MHC.
2. Whakahohenga: Ka kitea ngā paturopi e tukuna ana e te MHC e ngā kaiwhakawhiwhi i runga i ngā pūtau-T e rite ana. Ka whakahohehia ngā pūtau-T kua kite i te paturopi, ka puta ai tō rātou tipu me te rerekētanga hei pūtau whai hua ka taea te mahi i te mahi whakaeke i ngā pathogens. Ka whakahohehia hoki ngā pūtau-B mā roto i ngā taunekeneke ki ngā pūtau-T me ngā paturopi e pā ana, ka whakaoho i te hanga o ngā paturopi e motuhake ana ki taua paturopi.
3. Ngā Kaiwhakaputa: Ka whakangaromia e ngā pūtau-T cytotoxic ngā pūtau pangia mā roto i ngā tikanga maha, tae atu ki te tukunga o ngā granules kei roto ko te perforin me ngā granzymes e whakaoho ana i te apoptosis i roto i ngā pūtau ūnga. I taua wā, ka whakaekea e ngā paturopi i hangaia e ngā pūtau-B ngā pathogens i waho o te pūtau, ka tohua rātou kia whakangaromia e ētahi atu wāhanga pūnaha ārai mate pēnei i ngā macrophages, mā roto rānei i te ara tāpiringa.
4. Mahara Ārai Mate: Kia mutu te mate, ka huri ētahi o ngā pūtau-T me ngā pūtau-B kua whakahohehia hei pūtau mahara. Ka noho tonu ēnei pūtau mahara i roto i te tinana, ā, ka tere ake, ka whai hua ake te urupare mēnā ka hoki anō te mate urutā ki roto i te tinana.
Taurite o te Pūnaha Ārai Mate
He tino whai hua te pūnaha ārai mate, ā, he mea nui hoki mō te oranga tonutanga, engari ki te kore e taurite te pūnaha ārai mate, ka puta he maha ngā raruraru hauora. Ko te ngoikore o te pūnaha ārai mate, ahakoa he mea whiwhi, he mea whānau mai rānei, ka ngoikore te kaha ki te whawhai ki te mate. I tetahi atu taha, ko te nui rawa, te kore rānei e taea te whakahaere i te urupare ārai mate, ka puta he mate ārai mate, ka whakaekea e te pūnaha ārai mate ngā pūtau o te tinana, pērā i te mate sclerosis maha, te mate rumatiki rānei.
Ko ētahi atu mate o te pūnaha ārai mate ko te mate pāwera, ka nui haere te kaha o te urupare a te pūnaha ārai mate ki ngā antigens kore kino, pērā i te hae, i ētahi kai rānei. Me whai wawaotanga hauora tika hei whakaora i te pūnaha ārai mate kia noho noa.
Te Katinga
Ko te pūnaha ārai mate me āna tikanga mō te wehewehe i waenga i te "whaiaro" me te "kore-whaiaro" kei roto i ngā āhuatanga tino nui o te tinana tangata. He mea nui te hauora pai o te ārai mate, ehara i te mea hei ārai i ngā mate pāwera anake, engari hei pupuri hoki i te taurite i roto i te tinana hei ārai i ngā mate ārai mate, i ngā mate pāwera rānei. Kei te whanake tonu te māramatanga hohonu ake ki te pūnaha ārai mate, e whakatakoto ana i te ara mō ngā mahi auaha hauora maha i roto i te whakaora ārai mate me te werohanga, e tuku ana i te tumanako hou mō te rongoā i ngā mate uaua e pā ana ki te pūnaha ārai mate.
