By Cocer Peptides 
Watanni 1 da suka gabata
DUKKANIN LABARI DA BAYANIN KYAUTATAWA DA AKE BAYAR A WANNAN SHAFIN KAWAI DOMIN WATSA BAYANI NE DA MANUFOFIN ILIMI.
Kayayyakin da aka bayar akan wannan gidan yanar gizon an yi niyya ne kawai don binciken in vitro. Binciken in vitro (Latin: *a cikin gilashi*, ma'ana a cikin gilashin gilashi) ana gudanar da shi a wajen jikin mutum. Waɗannan samfuran ba magunguna ba ne, Hukumar Abinci da Magunguna ta Amurka (FDA) ba ta amince da su ba, kuma dole ne a yi amfani da su don hanawa, magani, ko warkar da duk wani yanayi na likita, cuta, ko cuta. Doka ta haramta shigar da waɗannan samfuran cikin jikin mutum ko dabba ta kowace hanya.
Bayanin Melanotan-2
Melanotan-2 (MT-2) shine heptapeptide na cyclic na roba da kuma analog na α-melanocyte-stimulating hormone (α-MSH). Yana taka muhimmiyar rawa wajen daidaita melanocyte-stimulating hormone receptors. MT-2 da farko yana aiwatar da tasirin sa ta hanyar hulɗa tare da mai karɓar melanocortin 1 (MC1R). Ana bayyana MC1R sosai akan saman melanocytes. Bayan ɗaure wannan mai karɓa, MT-2 yana ƙaddamar da jerin hanyoyin siginar siginar intracellular, a ƙarshe yana haɓaka haɓakar melanin da rarrabawa, ta haka yana haifar da canje-canje a launin fata.
Hoto 1 Tsarin melanotan II.
Aikace-aikace na Melanotan-2 a cikin Tanning na Kimiyya
(1) Injin Tanning
Haɓaka haɗin melanin: Bayan MT-2 ya ɗaure zuwa MC1R, yana kunna adenylate cyclase, yana haɓaka jujjuyawar adenosine triphosphate (ATP) zuwa cyclic adenosine monophosphate (cAMP) a cikin tantanin halitta. cAMP yana aiki azaman manzo na biyu don kunna furotin kinase A (PKA), wanda hakanan yana fitar da ƙaramin adadin abubuwan da ke da alaƙa da ido (MITF). MITF shine maɓalli mai mahimmanci mai mahimmanci a cikin haɗin melanin, yana daidaita bayanin melanin kira enzymes kamar tyrosinase, furotin da ke da alaƙa da tyrosinase 1 (TRP-1), da furotin mai alaƙa da tyrosinase 2 (TRP-2), don haka yana haɓaka haɗin melanin.
Rarraba da sufuri na pigment granules: Baya ga inganta haɓakar melanin, MT-2 kuma yana tasiri ga rarrabawa da jigilar nau'in launi a cikin melanocytes. Nazarin ya nuna cewa MT-2 na iya daidaita ayyukan sunadaran da ke da alaƙa da cytoskeletal, haɓaka motsi na melanosomes (kwayoyin da ke ɗauke da melanin) daga tsakiyar yankin melanocytes zuwa sassan sassan jikin tantanin halitta, a ƙarshe yana canja wurin melanin zuwa keratinocytes, ta haka yana duhun launin fata gaba ɗaya.
(2) Kwatanta da hanyoyin tanning na gargajiya
Iyakance hanyoyin gyaran fata na gargajiya: Hanyoyin fata na gargajiya sun haɗa da faɗuwar rana da yin amfani da gadaje fata. Duk da haka, tsawaita bayyanar da hasken ultraviolet (UV) - ko daga hasken rana na halitta ko UV da ke fitowa daga gadaje na tanning - yana da haɗari masu mahimmanci. UV radiation na iya haifar da kunar rana da kuma ja, kuma bayyanar dogon lokaci yana ƙara haɗarin ciwon daji na fata yayin da yake hanzarta tsufa na fata, yana haifar da wrinkles da sagging.
Amfanin Melanotan-2 Tanning: Sabanin haka, tsarin tanning da MT-2 ya haifar ba ya dogara ga bayyanar UV, a ka'ida yana rage haɗarin lalacewar fata na UV. Bugu da ƙari, MT-2 na iya haifar da canje-canje a cikin launi na fata a cikin ɗan gajeren lokaci, kuma wannan tasirin tanning yana da ingantacciyar daidaituwa, yana guje wa matsalolin sautin fata marasa daidaituwa wanda ya haifar da rashin dacewa da bayyanar rana ko amfani da gadon tanning.
(3) Misalan aikace-aikacen MT-2 Tanning
Fitness da Gina Jiki: MT-2 ana amfani dashi sosai tsakanin masu sha'awar motsa jiki da motsa jiki. Wadannan mutane sukan nemi tanning don haskaka ma'anar tsoka, suna sanya jikinsu ya fi dacewa a mataki ko yayin zanga-zangar horo. MT-2 yana ba su damar cimma sautin fata na tagulla da ake so cikin sauri ba tare da dogaro da tsawaita fitowar rana ba ko kuma yin amfani da gadaje akai-akai, don haka yana haɓaka kamannin su gabaɗaya.
Masu sha'awar Tanning na yau da kullun: Wasu mutanen da ke neman launin fata na zamani suma suna nuna sha'awar MT-2. Ga waɗanda ke son lafiya, fata mai launin tagulla amma suna damuwa game da yuwuwar lalacewar fata daga hanyoyin tanning na gargajiya, MT-2 yana ba da zaɓi na dabam. Za su iya yin aikin tanning a gida ta amfani da hanyoyin aikace-aikacen da suka dace, wanda ya dace da dacewa.
Matsayin Melanotan-2 a cikin Kariyar fata
(1) Kayan aikin kariya na hoto
Tasirin photoprotective na Melanin: Melanin da MT-2 ya haɗa shi yana ɗaukar makamashin ultraviolet (UV), yana mai da shi zuwa makamashin thermal mara lahani kuma yana watsar da shi, ta haka yana rage lalacewar DNA ɗin fata kai tsaye wanda radiation UV ke haifarwa. Melanin yana aiki a matsayin laima mai kariya na halitta don fata, yadda ya kamata ya sha tare da watsawa UV radiation kafin ya kai zurfin fata, don haka yana rage haɗarin maye gurbi na UV da lalacewar salula.
Ingantaccen aikin antioxidant: MT-2 ba wai kawai yana haɓaka haɓakar melanin ba amma kuma yana haɓaka ayyukan enzymes antioxidant a cikin ƙwayoyin fata, kamar su superoxide dismutase (SOD) da glutathione peroxidase (GSH-Px). Wadannan enzymes antioxidant zasu iya kawar da nau'in oxygen mai amsawa (ROS) wanda aka haifar da hasken UV, irin su superoxide anions da hydroxyl radicals, hana ROS daga haifar da lalacewar oxidative ga lipids, sunadaran, da DNA a cikin kwayoyin fata, ta haka ne ke kula da ayyuka na yau da kullum na salon salula.
(2) Kariyar fata
A wasu gwaje-gwajen dabba, an yi wa dabbobin gwaji magani da MT-2 kafin a fallasa su ga hasken UV. Sakamakon ya nuna cewa matakin kunar rana a cikin rukunin MT-2 ya ragu sosai, tare da raguwar wuraren erythema da ƙwayar ƙwayar cuta. Bugu da ƙari, matakan alamun lalacewar DNA kamar 8-hydroxy-2'-deoxyguanosine (8-OHdG) a cikin ƙwayoyin fata an rage su, yana nuna cewa MT-2 yana da wani tasiri na kariya daga lalacewar DNA ta UV.
Gwajin ƙwayoyin in vitro kuma sun tabbatar da ingancin kariyar fata na MT-2. Melanocytes na al'ada ko keratinocytes an riga an yi su tare da MT-2 sannan an fallasa su zuwa yanayin UV. Wannan binciken ya gano cewa adadin rayuwa ya karu, adadin apoptosis ya ragu, kuma aikin enzyme antioxidant a cikin sel ya inganta, tare da ingantawa a cikin alamun da ke da alaka da damuwa. Wannan yana nuna cewa MT-2 na iya haɓaka juriyar fata ga lalacewar UV a matakin salula.
(3) Yanayin aikace-aikace
Ga daidaikun mutane da ke yawan tsunduma cikin ayyukan waje, kamar ƴan wasa da ma'aikatan waje, tsawaita faɗuwar rana yana fallasa su ga haɗarin lalacewar UV. Matsalolin kariya na fata na MT-2 na iya ba su ƙarin ma'aunin kariya. Ta hanyar yin amfani da MT-2 yadda ya kamata a hade tare da matakan kariya na gargajiya na gargajiya kamar yin amfani da hasken rana da sanya hular rana, ana iya ƙara haɓaka kariya ta fata daga hasken UV, rage haɗarin kunar rana, tanning, da cututtukan fata masu alaƙa da bayyanar UV na dogon lokaci. Wasu jama'a, saboda dalilai na kwayoyin halitta, tarihin tsawaita bayyanar UV, ko takamaiman yanayin fata, suna cikin haɗari mafi girma ga kansar fata. Hanyoyin kariya na hoto da maganin antioxidant na MT-2 na iya taimakawa rage haɗarin kamuwa da cutar kansar fata.
Matsayin Bincike na Yanzu
A halin yanzu, akwai ingantacciyar fahimtar tsarin aikin MT-2, gami da tsarin ɗaure shi tare da mai karɓar MC1R, kunna hanyoyin siginar intracellular, da ka'idojin haɓakar melanin da rarrabawa. Duk da haka, wasu cikakkun bayanai sun kasance da za a ci gaba da bincike, kamar tasirin dogon lokaci na MT-2 akan melanocyte metabolism da kuma bambancin tsarin aiki a cikin mutane masu nau'in fata daban-daban.
Kammalawa
Melanotan-2 yana taka muhimmiyar rawa a cikin tanning kimiyya da kariyar fata. Daga hangen nesa na kwaskwarima, yana ba wa mutanen da ke neman ingantaccen sautin fata hanyar yin fata ta kimiyya wacce ba ta dogara da bayyanar UV ba, don haka guje wa kunar rana da tsufa na fata da ke da alaƙa da sunbathing na gargajiya da gadaje tanning, da biyan buƙatun dual don aminci da inganci a cikin fata. Dangane da kariyar fata, MT-2 yana gina kariya daga haskoki na UV ta hanyar haɓaka haɓakar melanin da haɓaka ƙarfin antioxidant, yana ba da sabbin zaɓuɓɓuka ga waɗanda ke yin ayyukan waje.
Sources
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Samfura akwai don amfani da bincike kawai:
