Zvirwere zvese nehurwere hazvina kukanganisa vanhu chete, asiwo pamhuka. Iri rinoita zano rekuda kuziva nekuti hosha zhinji dzakakanganisa nzanga dzinobva kumhuka nemaruva, kunyangwe paine zvisizvo. Imwe yacho ndeye mubvunzo wekuvapo kwe mhuka dzine Down syndrome.
Tsanangudzo pfupi yeDown syndrome
Down syndrome inofungidzirwa, zvichibva pane zvidzidzo zvezvokurapa, seti yezviratidzo zvepfungwa uye zvemuviri zvinokonzerwa nekugadziriswa kwemajini uye, kunyange zvazvo zviri nyore kuziva uye kuwana muhuwandu hwevanhu, hazvina kudaro mune zvimwe zvipenyu. Pakati pezviratidzo zvechiso zvinozivikanwa zviri nyore chiso chinoputika, kunyanya mubhiriji remhino, nzeve duku uye mutsipa mupfupi.
Pakati pezvinetso zvemuviri zvinokonzerwa nemamiriro ezvinhu aya ndezvokuremara kwemwoyo, kushaya simba kwetsandanyama, makumbo akasununguka, kutadza kunzwa uye kuva nyore kubatwa nehosha dzenzeve, zvirwere zvemaziso zvakadai semyopia, kupererwa neropa, zvinetso zvethyroid, leukemia, kuvharika kwematumbo, kutadza kufema, kurwara neHirschsprung's. chirwere uye zvakare akasiyana kukosha kwekuremara kwekuziva.
Kana chero nguva mubvunzo wakamutswa wekuti chirwere ichi chinogona kubatwa nacho Dzipfuwo mhuka, zvakadai sembwa uye katsi, nokuti zvinogona kuratidzwa kuti kwete, imbwa haigoni kuva neDown syndrome sekitsi. Izvi zvichatsanangurwa munyaya inotevera, kunyange zvazvo vangaratidza zviratidzo zvakafanana, asi mavambo avo uye chikonzero chinobva kune imwe pfungwa.
Ichokwadi here kuti imbwa dzinogona kutambura nazvo?
Vese vanhu uye canids vane huwandu hwekusagadzikana kwemajini, asi Down syndrome haiwani ese ari maviri pamwechete. Chete neasiri-anhu primates chikamu chiri padyo ne98% yeruzivo rwemajini rwakagovaniswa nehomo sapiens, iyo yakagadziriswa kuwana chirwere chakafanana pakati pezviviri, asi izvi hazvisi izvo kune mamwe marudzi, akadai sekatsi. .o Imbwa, kunyange zvakadaro, dzingatambura nemamwe magene abnormalities ane zvimwe zviratidzo zvayo.
Kunyanya, iwe wakakwanisa kuona kuti pane imwe nguva kuburikidza neinternet iwe wakadzidza nezve huwandu hukuru hweruzivo nezve Down syndrome mune ingwe, imbwa, katsi, mukubatana kwemifananidzo ine ruzivo rwakanyanya kufanana neiyo mamiriro ekurapa Kuziva kuti hunhu uhu hunobva kupi kunogona kukonzera shanduko yemajini uye deformation, asi kwete neiyo syndrome.
Chinhu chepedyo chakasvika pakuzivikanwa nezve Down syndrome mumhuka Izvo zvave zvichizivikanwa nekuda kwekuyedza kwakaitwa negonzo remurabhoritari, umo rodent yaive trisomic, sosi yakagadziridzwa nevatsvaguri kuti vaidzidze mumuenzaniso wemhuka uye kutarisa mamiriro ayo. Pakutanga kwechromosome 16 mumakonzo, vakakwanisa kusimudzira trisomy ine majini kubva kuchromosome 21 muvanhu. Chinangwa ndechekudzidza kumiririrwa kwemajini makopi aya.
Pamusoro peizvi, zvinotarisirwawo kuenzanisa kufanana kwayo uye hukama neDown syndrome, kuwirirana pakati pezvikamu zvemajini uye zvinogona kuitika mune ramangwana reiyi genetic nature inofanirwa kuitwa. Mune mamwe mazwi, vanhu, pamwe nemaprimates, vanogona kutambura neDown syndrome, asi mhuka kana zvisikwa zvipenyu zvisingagoverane genetic codes hazvigone kutambura nazvo.
Mamiriro ezvinhu ayo imbwa dzinotambura pa genetic level
Zvine musoro kufunga kuti mhuka dzinogonawo kukanganiswa nekuremara kwekuziva, asi chimwe chinhu chakasiyana zvakanyanya kubva kune trisomy 21, inogona kuitika nekuda kwezvikonzero zvakasiyana, ichitaura, semuenzaniso, cognitive dysfunction syndrome, inokura mumbwa dzakura kana dzakura, It. inogonawo kuitika mumakati, asi haina kunyanya kuoneka, uye inoitika nekuda kwezera rekukura.
Sezvambotaurwa, mukana wekuti kune down syndrome mumbwa idiki, asi ichokwadi kuti imbwa nevanhu vanogovana zvimwe zvirwere zvemajini, zvimwe zvacho chibereko chekuchinja kwemajini mune chaiwo machromosomes, senge cataracts, narcolepsy, pakati pemamwe mamiriro, izvo zvinotungamira kumhedzisiro yekuti zvimwe zviitiko. ndiyo mienzaniso yakanaka yekudzidza chirwere muvanhu, iyo inobatawo mhuka ye quadrupedal, munyaya iyi.
Genetic modifications inotambura nemhuka
Zvinoenderana nekutaura kwaHeather Rally, chiremba wemhuka uye muvambi wePETA, sangano risingabatsiri mukubatana nekodzero dzemhuka, iro rakataura kuti "Chete mune dzisiri dzevanhu primates ine nhaka yenhaka yakafanana neyedu yakaonekwa”. Magorira, zvakare, ane DNA iyo 98% yakafanana neyevanhu, ine misiyano yakanyatso kujeka maererano nekutaura uye zvine musoro, kudzora uye kugadzira kufunga.
Nezve katsi, maumbirwo emakromozomu mumhuka dzakasiyana-siyana kuti abudise genetic alterations inokonzerwa neDown syndrome, zvisinei, unogona kuona mamwe mageneti oddities anogadzira aesthetic kufanana; izvi, maererano naDr. Rally. Kunyange zvakadaro, chikonzero chekutanga chezvirwere zvekugara nhaka muhuwandu hwemhuka ndeyekuratidzwa mu utero kune mavhairasi kana zvinhu zvine chepfu, pamwe nekukanganisa kunokonzerwa nekuyambuka.
