Ibintu bitatu byo gusaza uruhu

Ikintu cya mbere mu gusaza k'uruhu:

Imirasire ya UV, gufotora

70% yo gusaza kwuruhu bituruka kumafoto

Imirasire ya UV igira ingaruka kuri kolagen mumubiri, ituma uruhu rusa nkuruto. Niba kolagen igabanutse, uruhu ruzaba rugabanije elastique, kugabanuka, gucika intege, imiterere yuruhu rutaringaniye, hyperpigmentation, pigmentation nibindi bibazo byuruhu.

Ikirere kinini cy'izuba kigabanijwemo UVA na UVB. Imirasire ya UVB ifite uburebure buke kandi irashobora gutwika igice cyo hejuru cyuruhu rwacu, ntigishobora kwinjira cyane muruhu; ariko, imirasire ya UVA ifite uburebure burebure kandi irashobora kwinjira mu kirahure kandi ikinjira cyane mu ruhu, amaherezo igabanya intege nke za kolagen kandi biganisha ku mikurire y’iminkanyari.

Mu magambo yoroshye, UVA itera gusaza, UVB itera gutwika, kandi urumuri ultraviolet rushobora kwangiza ADN selile, kugabanya ibikorwa bya fibroblast, kandi synthesis ya kolagen irahagarikwa, biganisha ku ihinduka ryimikorere ya selile, gusaza, na apoptose. UV rero, ahantu hose, haba izuba cyangwa ibicu, ugomba gukora akazi keza ko kurinda izuba.

Ikintu cya kabiri cyingenzi mugusaza kwuruhu

Oxidative yubusa

Ijambo ryibanze kuri radicals yubuntu ni 'ogisijeni'. Duhumeka hafi 98 kugeza 99 ku ijana bya ogisijeni igihe cyose duhumeka; ikoreshwa mugutwika ibiryo turya no kurekura molekile nto kugirango selile zacu zihindurwe, kandi irekura imbaraga nyinshi kugirango imitsi yacu ikore.

Ariko birashoboka ko 1% cyangwa 2% bya ogisijeni ihitamo inzira itandukanye kandi iteje akaga, iyi ogisijeni ntoya, bakunze kwita radicals yubusa, yibasira selile. Igihe kirenze, ibyangiritse birundanya mugihe.

Ikigaragara cyane ni ibimenyetso byo gusaza bigaragara ku ruhu. Umubiri wacu ufite uburyo bwo kwirwanaho busana ibyangijwe ningirabuzimafatizo zacu na radicals yubuntu, ariko iyo radicals yubusa irundanye vuba kurusha selile yumubiri ishobora kubisana, uruhu rugenda rusaza.

Ifoto iri hejuru ni tissue nyayo yuruhu rwumubiri wacu, urashobora kubona neza ko epidermis yo hejuru yijimye kandi dermis yo hepfo irabagirana gato, dermis niho dukorera kolagen, naho selile zitanga kolagen zitwa fibroblast, arizo imashini ikora imashini.

Fibroblast iri hagati yishusho ni fibroblast, kandi urubuga rwigitagangurirwa ruzengurutse ni kolagen. Kolagen ikorwa na fibroblast, kandi uruhu rukiri ruto ni urwego rwibice bitatu kandi rukomatanye cyane rwa kolagen, hamwe na fibroblast ikurura cyane fibre ya kolagen kugirango uruhu rukiri ruto rwuzuye kandi rworoshye.

Uruhu rwa kera, fibroblast hamwe na kolagen ihuza hagati yo gusenyuka kwa fibroblast ishaje akenshi bizanga kwinjirira kwa kolagen, igihe, uruhu na rwo rwatangiye gusaza, ibi nibyo dukunze kuvuga ko uruhu rusaza, twakemura dute okiside ya Uwiteka uruhu rwakiriwe?

Usibye kwita cyane ku zuba, dushobora gukoresha bimwe na vitamine A, vitamine E, aside ferulike, resveratrol nibindi bikoresho bikomoka ku ruhu; mubisanzwe birashobora kandi kurya imbuto n'imboga zifite amabara meza cyane, nk'inyanya, inyanya zikungahaye kuri lycopene.

Irashobora kwinjiza ogisijeni neza kandi ikarinda guhagarika umutima, urashobora kandi kurya broccoli nyinshi, broccoli irimo igice cyitwa amavuta ya sinapi glycoside, nyuma yo gufata iki kintu, kizabikwa mu ruhu, kugirango selile zuruhu zishobore kwikingira. , izo mbuto n'imboga birashobora guteza imbere kurwanya selile.

Ikintu cya gatatu cyingenzi mugusaza kwuruhu

Uruhu

Glycation, muburyo bw'umwuga, yitwa reaction ya glycosylation itari enzymatique cyangwa reaction ya Melad. Ihame ni uko kugabanya isukari ihuza poroteyine mugihe nta misemburo ihari; kugabanya isukari birashobora guhinduka cyane hamwe na poroteyine, kandi kugabanya isukari na proteyine bigira okiside ndende, dehydrogenation, hamwe na reaction ya reaction, bikavamo umusaruro wa nyuma wa glycosylation yanyuma, cyangwa AGEs mugihe gito.

IMYAKA ni itsinda ryidasubirwaho, umuhondo-wijimye, imyanda ijyanye n’ibinyabuzima idatinya kurimbuka kwa enzyme, kandi nimwe mubitera abantu gusaza. Mugihe tugenda dusaza, IMYAKA irundanya mumubiri, bigatuma kwiyongera k'ubukomezi bwurukuta rwimbere rwimiyoboro yamaraso, ubusumbane bwimikorere yamagufwa biganisha kuri osteoporose, no gusenya fibre ya kolagen na elastine muri dermi biganisha ku gusaza kwuruhu. Gusaza k'uruhu biterwa na glycation byavuzwe mu nteruro imwe: isukari yangiza poroteyine nziza kandi igahindura imiterere ya poroteyine ikiri nto mu miterere ya poroteyine ishaje, biganisha ku gusaza no gutakaza elastique ya kolagen na fibre elastique muri dermis.