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Video: 4 hom albinism yog dab tsi?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Txog rau hnub tim ntau li xya daim ntawv ntawm oculocutaneous albinism tam sim no tau lees paub - OCA1, OCA2, OCA3, OCA4, OCA5, OCA6 thiab OCA7. Qee qhov ntxiv muab faib ua subtypes. OCA1, lossis tyrosinase-ntsig txog albinism, tshwm sim los ntawm kev tshuaj ntsuam tsis zoo hauv ib qho enzyme hu ua tyrosinase.
Raws li txoj cai, vim li cas thiaj muaj ntau hom albinism?
Txhua yam ntawm albinism tshwm sim los ntawm kev hloov pauv ntawm cov noob tshwj xeeb ntawm ib qho chromosome uas ua rau muaj kev ua haujlwm tsis zoo ntawm cov hlwb hu ua melanocytes. Cov hlwb no tsim cov melanin, lossis xim, uas ua rau muaj xim rau ntawm daim tawv nqaij, plaub hau, thiab qhov muag.
Ib yam nkaus, puas muaj lwm lub npe rau albinism? Cov hom mob hnyav tshaj plaws ntawm albinism hu ua oculocutaneous albinism . Cov neeg uas muaj hom no albinism muaj cov plaub hau dawb lossis liab dawb, tawv nqaij, thiab xim iris. Lwm tus hom ntawm albinism , npe ocular albinism hom 1 (OA1), cuam tshuam nkaus xwb cov qhov muag.
Ntawm no, dab tsi yog hom kab mob albinism feem ntau?
Oculocutaneous albinism
Albinism muaj ntau npaum li cas?
Ib tug neeg ntawm 17,000 muaj qee hom albinism . Albinism cuam tshuam rau tib neeg los ntawm txhua haiv neeg. Feem ntau cov menyuam nrog albinism yug los rau cov niam txiv uas muaj plaub hau thiab qhov muag xim rau lawv haiv neeg keeb kwm.
Pom zoo:
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Hauv lub tshuab tsom me me, kev tso roj yog txheej txheem siv txhawm rau txhawm rau daws qhov teeb meem ntawm lub tsom iav. Qhov no yog ua tiav los ntawm kev raus ob lub hom phiaj tsom iav thiab cov hnoos qeev hauv cov roj pob tshab ntawm qhov ntsuas siab refractive, yog li ua kom cov zauv zauv ntawm lub hom phiaj tsom iav
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OSHA Lub Hom Phiaj Nrog Txoj Cai Kev Nyab Xeeb Kev Nyab Xeeb thiab Kev Noj Qab Haus Huv xyoo 1970, Congress tau tsim Txoj Haujlwm Kev Nyab Xeeb thiab Kev Noj Qab Haus Huv (OSHA) txhawm rau kom muaj kev nyab xeeb thiab noj qab haus huv ua haujlwm rau cov txiv neej thiab poj niam ua haujlwm los ntawm kev teeb tsa thiab ua raws cov qauv thiab los ntawm kev qhia, nthuav tawm, kev kawm thiab kev pab
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Hom kev qub txeeg qub teg no hu ua autosomal recessive inheritance. Rau OA, cov noob rau albinism nyob ntawm X chromosome. Cov poj niam muaj ob X chromosomes, thaum txiv neej muaj ib tug X chromosome thiab ib tug Y chromosome. X-txuas ocular albinism tshwm sim tsuas yog hauv cov txiv neej
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Muaj ntau hom sib txawv ntawm albinism, tab sis lub sij hawm feem ntau hais txog ob: oculocutaneous albinism (OCA) thiab ocular albinism. Muaj peb hom OCA uas raug xa mus ua OCA hom 1, OCA hom 2, thiab OCA hom 3
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Cov pob txha tau tsim los ntawm peb hom cell hom: Osteoblasts, Osteocytes thiab Osteoclasts. Osteoblasts: Osteoblasts yog cov pob txha tsim cov hlwb uas nqis los ntawm cov hlwb osteoprogenitor. Osteocytes: Osteoclasts: