Lapho lutho kuncike kithi: two-thirds zonke izimo umdlavuza zibangelwa izakhi zofuzo

New yesayensi ucwaningo iqembu lososayensi kusukela Centre of umdlavuza-Johns Hopkins kubonisa ukuthi amaphesenti angu-66 azo zonke izakhi zofuzo okuqondiswa ezibanga umdlavuza kuwumphumela oqondile we-DNA okungahleliwe ukufanisana amaphutha. Ngeshwa, lokhu kusho ukuthi ukuguquka kwezakhi zofuzo ezifana azinakugwenywa futhi asikwazi nqanda them.

imiphumela yocwaningo

Lesi siphetho yesiteleka kusekelwe uchungechunge onobuhle zezibalo esetshenziswa ukubikezela DNA ukukopisha izindlela, kanye ekuhlaziyweni isethi nga pre-existing idatha mayelana umdlavuza. Lezi ukuguquka kwezakhi zofuzo zenzeka kungakhathaliseki umuntu abaphile sáka emzimbeni noma cha, noma ngabe ukuthambekela ugwayi noma utshwala, nokunye. isimo Jikelele zempilo, kubonakala ayibalulekile.

"Siye safunda ubudlelwano phakathi isibalo evamile stem cell division kanye nokuthuthukiswa ingozi 17 zomdlavuza emazweni 69 emhlabeni wonke - abacwaningi ukubhala ephepheni yabo. - Idatha yabonisa ukuhlanganisa oqinile phakathi kwesifo somdlavuza kanye evamile lwama-stem cell nokwahlukana abantu abahlala emazweni ahlukahlukene, kungakhathaliseki medium ".

Ngaphezu kwalokho kwatholakala ukuthi u-29% zomdlavuza zibangelwa okuthonywa nayizimo zendawo. 5% kuphela amacala umdlavuza ibonakala ngofuzo.

iziphetho ezifanayo

Le miphumela ziyavumelana Iziphetho esifinyelela kuzo ngo-abacwaningi e 2015: zomdlavuza kakhulu kuwumphumela "amashwa" kunokuba awenzayo nanoma iziphi izici. Ngesikhathi esifanayo, ngemiphumela yocwaningo ngaphambili iphakamisile eziningi impikiswano, futhi lo msebenzi omusha kungenzeka sibhekane emkhathini efanayo nobutha.

Yini esiyaziyo umdlavuza

Njengoba sazi lokhu, kubalulekile ukugcizelela eminye imininingwane ebalulekile. Umdlavuza uyisifo eziyinkimbinkimbi kakhulu. Kukhona cishe izinhlobo ezingu-200 zezinhlanzi yayo, futhi ngamunye kubo kuyinto nolaka futhi ebulalayo, nakuba kwezinye izimo kungase ukuthela lokwelashwa, futhi kungaba ngisho ingelapheka. Futhi, zikhona izindlela eziningana zokubhekana nomdlavuza, kusukela bendabuko abakhulu. Ezinye zazo yilezi kuphumelela ngaphezu kwabanye.

Into ebaluleke kakhulu ukuqonda kule ndaba: asikakabi Akukuningi ngalesi sifo. Umdlavuza kungadalwa kokubili by nezici eziningana ezingezinhle kwemvelo (kwemisebe, carcinogens kanye nezifo) futhi izakhi zofuzo ezibangela, futhi abanye babo kungenzeka abe nethonya elikhulu kakhulu kunabanye.

Ngokusho ososayensi, ababengakholelwa iqhaza ocwaningweni

Ucwaningo olusha lisenza sicabange ngayo lokho esingakubona siyibukele phansi imvelo okungahleliwe yokwanda koshintsho umdlavuza e-DNA yethu, bese lokhu kudala izinkinga eziningi.

Nakuba idatha ibonisa ukuthi inani yokwanda koshintsho umdlavuza okungahleliwe kuphezulu kakhulu, inani langempela kungenzeka ephansi kakhulu. Empeleni, nabanye abacwaningi abaningi bakholelwa ukuthi ukuhlanganisa emkhatsini umdlavuza futhi DNA ukufanisana amaphutha, okhombisa cwaningo samanje kanye okwenzeka ngo-2015, abalobi nehaba kakhulu. Abanye baphawula ukuthi abalobi yalezizifundo bathembele kakhulu ku isethi eyodwa nje idatha, kuyilapho kufanele kucatshangelwe nabanye.

Olunye ucwaningo esanyatheliswa kumagazini i-Nature emuva ngo-2016, kwadingeka esiphethweni okuphambene. Abalobi wagomela ukuthi kuba yizici zemvelo ziyimbangela zomdlavuza kakhulu. Ngakho, kuyacaca ukuthi ngesikhathi iqiniso udinga ukuchitha ucwaningo okuningi.

Ukubaluleka ekuhlonzweni

Kunoma ikuphi, ngokuqinisekile lokhu akusho ukuthi ngeke ukwazi okungenani ingxenye ulawule uhlobo kakhulu zomdlavuza. Ngisho noma umuntu kungaqali lucky ngempela futhi efika umdlavuza ngenxa izakhi zofuzo, cishe ukuze usinde kwanoma isiphi esinye yenguquko emlandweni wesintu, sibonga umsebenzi Amazing ososayensi nezisebenzi zezokwelapha emhlabeni wonke.

Empeleni, ababhali baveza ukuthi, uma imiphumela olunembile, baphinde bakhombise ukubaluleka ukuthola izimpawu umdlavuza kusaqalwa.

"Ukuhlaziya kwethu ugcizelela ukubaluleka kusenesikhathi futhi zilekelele ukuze kuncishiswe ukufa kwabantu kusukela umdlavuza eziningi ezihlobene nezilwane ngokuguqula izakhi zofuzo" - babhala.

Indlela ukunciphisa ingozi yomdlavuza

Ubungozi isiyonke umdlavuza ekuthuthukiseni zingancishiswa ngu nokuvivinya umzimba ngendlela elinganiselayo, imigoqo utshwala, ukudla okunempilo futhi ukuyeka ukubhema. Eqinisweni, ucwaningo kwamuva kwaphetha ngokuthi izinga lokufa umdlavuza e-United States zingancishiswa ngokushintsha isimo isigamu, uma bonke abantu abadala American ngeke banamathele lezi zincomo.

Ngakho ningatatazeli futhi ningakholwa sematheni kwemilingo. Ukuphila ngendlela enempilo futhi bahlanganyele yokunikela ucwaningo umdlavuza. Kungakhathaliseki ukuthi yini ebangela umdlavuza - izakhi zofuzo ngofuzo yokuphila noma okungahleliwe DNA ukufanisana amaphutha, kulapho siyazi ngalesi sifo, ayihlomele ngcono nakakhulu ukulwa nakho.