Qhov sib txawv tseem ceeb ntawm melanin thiab melatonin yog tias melanin yog ib qho ntawm cov xim loj pom hauv tib neeg cov tawv nqaij, plaub hau thiab qhov muag, thaum melatonin yog ib yam tshuaj uas tsim los ntawm lub caj pas pineal thiab ua lub luag haujlwm hauv kev qaug zog thiab kev tswj hwm. ntawm lub voj voog pw tsaug zog.
Melanin thiab melatonin yog ob yam tshuaj muaj feem xyuam, tab sis muaj ntau yam sib txawv. Lawv keeb kwm, kev ua haujlwm, tshuaj muaj pes tsawg leeg thiab qhov chaw nyob hauv tib neeg lub cev sib txawv. Li no, kab lus no sim los tham txog qhov sib txawv ntawm melanin thiab melatonin.
Melanin yog dab tsi?
Melanin yog ib qho ntawm cov xim loj hauv tib neeg cov tawv nqaij, uas txiav txim siab xim ntawm daim tawv nqaij. Nws ntau lawm tshwm sim nyob rau hauv melanocytes nyob rau hauv daim tawv nqaij, qhov muag, pob ntseg, plaub hau, thiab central paj hlwb ntawm tib neeg lub cev. Ntxiv nrog rau kev muab xim, melanin ua tiav qee qhov haujlwm zoo ib yam. Ntawm cov no, qhov tseem ceeb tshaj plaws yog kev tiv thaiv ntawm daim tawv nqaij los ntawm hnub ci UV hluav taws xob, uas ua rau mob qog noj ntshav hauv tib neeg. Tsis tas li ntawd, melanin tiv thaiv lub cell lub nuclei; yog li, tiv thaiv DNA puas vim hluav taws xob. Tsis tas li ntawd, melanin muaj lub luag haujlwm hauv kev hnov lus thiab.
Daim duab 01: Melanin
Dhau li ntawd, tib neeg melanin yeej muaj ob lub polymers: eumelanin thiab pheomelanin. Eumelanin yog xim av / xim dub thiab nws cov khoom tshwm sim hauv eumelanosomes. Pheomelanin yog xim liab / daj thiab nws cov khoom tshwm sim hauv pheomelanosomes. Feem ntau, cov xim kawg ntawm ib tus neeg ntawm daim tawv nqaij nyob ntawm seb hom thiab ntau npaum li cas ntawm melanin tsim thiab cov duab, qhov loj, thiab, kev faib tawm ntawm melanosomes hauv daim tawv nqaij.
Melatonin yog dab tsi?
Melatonin yog ib yam tshuaj uas tsim los ntawm cov hlwb hauv plab hnyuv, retina, thiab caj pas pineal. Melatonin yog lub luag haujlwm rau tswj kev pw tsaug zog-tsim lub voj voog, lom neeg lub cev, thiab kev hloov kho thiab inhibition ntawm melanin synthesis. Tsis tas li ntawd, melatonin tuaj yeem kho cov hlwb puas los ntawm kev ntxhov siab thiab kab mob, thiab nres qhov tso tawm ntawm MSH thiab ACTH cov tshuaj hormones. Qhov tseem ceeb tshaj plaws, melatonin yog ib qho antioxidant. Nws tuaj yeem rhuav tshem cov kab mob los ntawm kev ua raws li cov tshuaj tiv thaiv kab mob.
Daim duab 02: Melatonin
Melatonin yog ib qho ntawm cov molecules nyuaj tshaj plaws hauv lub hlwb, daim siab, hnyuv, ntshav, thiab cov leeg. Melatonin originates los ntawm tryptophan, thiab catecholamines txhawb lub synthesis thiab secretion ntawm melatonin.
Dab tsi zoo sib xws ntawm Melanin thiab Melatonin?
- Melatonin thiab melanin yog ob yam khoom muaj nyob hauv cov kab mob nyob.
- Amino acids tsim ob yam khoom no.
Qhov txawv ntawm Melanin thiab Melatonin yog dab tsi?
Qhov sib txawv tseem ceeb ntawm melanin thiab melatonin yog tias melanin yog cov xim uas tsim los ntawm tyrosine thaum melatonin yog ib yam tshuaj uas tsim los ntawm tryptophan. Melanin muab cov xim ntawm daim tawv nqaij thiab koom nrog hauv kev tiv thaiv photoprotection thiab hnov lus. Ntawm qhov tod tes, melatonin muaj lub luag haujlwm tseem ceeb hauv kev hloov pauv ntawm cov synthesis ntawm melanin, tswj lub voj voog pw tsaug zog thiab kev lom zem hauv lub cev. Yog li, qhov no kuj yog qhov sib txawv ntawm melanin thiab melatonin.
Ntxiv mus, qhov sib txawv ntxiv ntawm melanin thiab melatonin yog lawv cov synthesis. Melanin synthesis tshwm sim nyob rau hauv melanosomes pom nyob rau hauv melanocytes thaum melatonin synthesis tshwm sim nyob rau hauv lub hlwb ntawm lub plab, retina, thiab pineal caj pas. Tsis tas li ntawd, melanin muaj nyob rau hauv daim tawv nqaij, qhov muag, pob ntseg, plaub hau, thiab lub hauv paus paj hlwb thaum lub sij hawm melatonin muaj nyob rau hauv lub hlwb, daim siab, hnyuv, ntshav thiab cov leeg.
Summary – Melanin vs Melatonin
Hauv luv luv, melanin thiab melatonin yog ob yam tshuaj muaj nyob hauv peb lub cev. Melanin yog cov xim thaum melatonin yog cov tshuaj hormones thaum cov amino acids yog cov ua ntej ntawm ob lub molecules. Tsis tas li ntawd, melanin yog polymer thaum melatonin tsis yog polymer. Melanin yog lub luag haujlwm rau kev muab cov xim tawv nqaij, kev tiv thaiv kev tiv thaiv, thiab koom nrog hauv kev hnov lus. Ntawm qhov tod tes, melatonin yog lub luag haujlwm rau kev hloov pauv ntawm cov synthesis ntawm melanin, tswj lub voj voog pw tsaug zog thiab kev lom zem hauv lub cev. Yog li, qhov no qhia txog qhov sib txawv ntawm melanin thiab melatonin.
