Melanin - abin da yake da shi da kuma dalilin da ya sa aka bukace ta?

Dukanmu mun san cewa mutane ne daban-daban launi na fata, da idanu da kuma gashi, amma ba koyaushe zaton, me ya sa wannan yake da faruwa. Amma zargi melanin. Mene ne wannan? Pigment baki ko duhu Brown launi, wanda shi ne yanzu a wasu Kwayoyin, wanda ake located biyu a cikin epidermis kuma a cikin Iris na ido. A wasu lokuta, da adadin ƙaddara da genotype, a wasu - da muhalli da yanayi.

Gaskiyar cewa samar da melanin faruwa a ƙarƙashin rinjayar hasken rana - fata da aka kare daga UV haske, tan bayyana. A karin lokaci da mutum ya ciyar a rana, da duhu shi ya zama fata - wannan ne na kowa tsaron gida dauki. Amma kusan kowa da kowa ya san cewa mutane daban-daban tan alheri ko sharri, wani kawai samun kone su. Kamar yadda shi ne yanayin da ido launi ne m da genotype. A fata na irin wadannan mutane kawai kadan melanin, da kuma jiki kuma samar da kasa yawa, don haka dole ka yi amfani da sunscreen.

Wannan aiki na melanin ne da muhimmanci, kuma ko da a cikin duniya, kuma haka a kowace shekara wata babbar yawan lokuta fata ciwon daji, wannan pigment ba tare da su zai zama ko da more. Samun a kalla nahiyar Afrika - ba tare da wani karfi photoprotection muhimmi zuwa gida mazauna, shi ba zai yiwu ba ga tsira. Saboda haka abin da daidai ne abu da alhakin launi na fata da kuma kare shi daga tareda žata effects na hasken rana.

Saboda haka, muna iya bambance mutane tare da high matakan da melanin daga sauran - su ne sauki zuwa ga haske, da kuma inuwa da fata ne da wuya sosai haske, yawanci zaitun ko duhu. Akwai yanayin da jiki ba zai iya a isa yawa ko a duk, don samar da melanin. Menene wannan yake nufi da kuma yadda yake bayyana kanta? A wannan yanayin da muke magana game da zabiya - bayyanar irin wadannan mutane na iya ze farko wurin matukar mamaki. Zabiya mutane za a iya samu infrequently, amma a cikin dabba duniya ba irin wannan rarity, musamman a hakori. Wani lokaci, fatar jiki pigment cewa an hallaka daya dalili ko wata - sa'an nan muna magana ne game da vitiligo.

Ba kawai dabi'ar mutum, don samar a cikin kwayoyin jikinsu a mayar da martani ga hasken rana melanin. Abin da ake nufi? Shin namomin kaza, dabbobi da kuma shuke-shuke, kuma, samar da shi? Haka ne, domin su ma, bukatar photoprotection, da kuma pigment ne daidai garkuwoyi da ultraviolet.

Bugu da kari ga ta primary aiki, da melanin a cikin jiki taka wata rawa fiye na mai neurotransmitter, kuma aka hannu a cikin maido da kuma kariya na DNA - kwayoyin bayanai kowane mutum kwayoyin. Bugu da kari, shi ne mai iko antioxidant, da muhimmiyar rawar da wannan abu ya dade da aka gane a cikin magani. Shi ne da pigment alhakin samuwar freckles - stained Kwayoyin tara a cikin wani rukuni, kuma ta kama kananan spots a kan fata, sananne ga dukan.

Mutane da kodadde fata sau da yawa so da su Kwayoyin kullum nuna melanin. Mene ne wannan? Za a yi shi? Kai tsaye - babu, amma yana yiwuwa su kara da ci abinci tare da bitamin A, wanda aka hannu a ciki har da wannan pigment samar, da kuma bada fata a zinariya ya dafa. Melanin ya koya yadda za a cire daga Kwayoyin, da kuma hada da amino acid tyrosine. Ana amfani da a medicaments domin lura da vitiligo da photodermatitis, eczema da kuma hasken rana t. D. shi ma dauke da kayan shafawa domin kariya daga ultraviolet radiation da amfani bayan tanning. Ƙyale fata kariya iya ba a wani hali, domin shi ne fraught tare da ba kawai konewa, amma kuma yafi tsanani matsaloli.