Cov txheej txheem:
Video: Dab tsi DNA hloov pauv ua rau mob qog ntshav ntshav ntshav?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Sickle cell disease yog tshwm sim los ntawm a kev hloov pauv hauv cov ntshav hemoglobin-Beta pom ntawm cov chromosome 11. Hemoglobin thauj cov pa tawm ntawm lub ntsws mus rau lwm qhov hauv lub cev. Cov qe ntshav liab uas muaj hemoglobin ib txwm (hemoglobin-A) yog du thiab puag ncig thiab glide los ntawm cov hlab ntsha.
Ib yam li ntawd, koj tuaj yeem nug, koj li DNA txiav txim siab seb koj puas muaj mob ntshav tsis txaus?
Sickle cell anemia yog ib kab mob caj ces tias cuam tshuam hemoglobin, cov oxygen thauj cov molecule hauv cov ntshav. Sickle cell anemia yog ua los ntawm a ib tsab ntawv hloov pauv hauv cov DNA . Qhov no hloov pauv ib qho ntawm cov amino acids hauv cov hemoglobin protein. Valine zaum hauv cov qhov chaw uas glutamic acid yuav tsum ua.
Ib qho ntxiv, yuav ua li cas cov ntshav ntshav ntshav ntshav cuam tshuam nrog cov protein? Sickle cell anemia yog caj ces kab mob nrog cov tsos mob hnyav, suav nrog mob thiab ntshav ntshav . Cov kab mob yog tshwm sim los ntawm kev hloov pauv ntawm cov noob uas pab ua kom hemoglobin - a protein ntau uas nqa cov pa oxygen hauv cov ntshav liab hlwb.
Xav txog qhov no, mob mob cell anemia hloov zuj zus li cas?
Thaum ib tus neeg tau txais ob daim ntawv hloov pauv ntawm cov noob ntshav hemoglobin, qhov txawv txav ntawm cov protein hemoglobin ua rau cov ntshav liab hlwb kom poob oxygen thiab warp rau hauv ib kab mob zoo thaum lub sijhawm ua haujlwm siab. Qhov no yog sickle cell anemia.
Cov haiv neeg twg cuam tshuam ntau tshaj los ntawm mob ntshav tsis txaus?
Kab mob Sickle cell muaj ntau dua nyob rau hauv qee pawg neeg, suav nrog:
- Cov neeg ntawm African qhovntsej thiaj tsis mob, suav nrog African-Asmeskas (ntawm 1 ntawm 12 tus neeg muaj mob qog noj ntshav)
- Hispanic-Asmeskas los ntawm Central thiab South America.
- Cov neeg ntawm Middle East, Neeg Esxias, Khab, thiab Mediterranean qhovntsej thiaj tsis mob.
Pom zoo:
Yam twg ntawm cov hauv qab no yog qhov hloov pauv hloov pauv tau rau kev mob pob txha?
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Kev sib raug zoo ntawm kev hloov pauv thiab kev nug txog mob qog noj ntshav yog dab tsi?
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Dab tsi yog qhov kev hloov pauv uas ua rau mob qog nqaij hlav anemia?
Tus kab mob Sickle cell yog tshwm sim los ntawm kev hloov pauv hauv hemoglobin-Beta gene pom ntawm chromosome 11. Hemoglobin thauj oxygen los ntawm lub ntsws mus rau lwm qhov ntawm lub cev. Cov qe ntshav liab uas muaj hemoglobin ib txwm muaj (hemoglobin-A) yog du thiab puag ncig thiab glide los ntawm cov hlab ntsha
Kev hloov pauv hloov pauv yog dab tsi?
Kev hloov pauv hloov pauv hloov pauv ntawm cov khoom nruab nrog nruab nrab ntawm ob tsev neeg, uas tsis tuaj yeem pub khoom nruab nrog cev rau lawv tsev neeg vim yog pawg ntshav tsis sib haum. Qhov no yog nyob rau hauv kev nkag siab 'khub pauv'