Pamusoro peNowanzonzi Genetic Disorder
Down syndrome chirwere chema genetic chinokonzerwa nechirema mu chromosome 21 iyo inoitika nekuda kwekusasarudzwa kwemajeri. Dambudziko racho rinokonzera zvinetso zvepfungwa uye zvinokurudzira zvinosiyana nekuoma. Inogona kukonzera matambudziko makuru ehutano akadai sekushaya mwoyo.
Kune vanenge 400 000 vokuAmerica vane Down syndrome. Maererano neNational Down Syndrome Society, 1 muvana vose 691 muUnited States vanoberekwa neArt syndrome.
Ndivana vanenge 6 000 vakaberekwa neArt syndrome gore negore. Aya aya achangokupa achakupa kunzwisisa kwakanakisisa kweArt syndrome, iyo inowanzojairika yegenetic chromosomal disorder.
Zvinokonzera
Masero evanhu anowanzo ane mapaundi 23 emaikromosomes. Down syndrome inoguma kana chromosome 21 inobereka mamwe mazita ezve genetic. Kune zvitatu zvakasiyana-siyana zvakasiyana-siyana zveArt syndrome:
- Trisomy 21 . Ichi ndicho chinyanyozivikanwa chromosomal chisina kuonekwa chinoonekwa kuvana. Izvo zvinoitika kana mwana ane makero matatu echromosome 21 mumasero ake pane maviri. Inokwana 95 muzana yeArt syndrome case. Iko kromosome yakawanda inobva kumamai 88 muzana yenguva uye kubva kuna baba 12 muzana yenguva.
- Mosaic Down syndrome . Iyi fomu isingawanzoitiki yeA Down syndrome inobata 2 kusvika ku3 muzana yematambudziko. Mamwe, kwete ose, masero ane kopi yechromosome 21.
- Translocation Down syndrome . Chromosome 21 inobata kune imwe chromosome, ingave isati yambovapo kana pakuberekwa. Inenge 75 kubva muzana yemapatendi aya asina kufanana ndeye novo , zvinoreva kuti zvinowanikwa nechiitiko. 25 muzana yekutumirwa kunowanikwa nhaka kubva kumubereki. Mubereki anozivikanwa se "mutengesi anoshanda zvakanaka," zvichireva kuti akagadzirisazve mazwi ekuberekwa, asi kwete mamwe mazwi ekuberekwa. Muchengetedzeri wekutarisa hauratidzi chero zviratidzo zve Down Down, asi vanogona kuzvipa kune vana.
Zvose zvitatu zveA Down syndrome zvinokonzerwa nemararamiro, asi 1 muzana chete yeA Down syndrome mhaka inowanikwa kubva kumubereki kusvika kumwana kuburikidza nemagenene.
Risk Factors
Vamwe vabereki vanowedzera mungozi yekukwanisa kubata mwana ane Down syndrome. Zera chimwe chinhu chinoita. Mikana yekuwana mwana neArt syndrome inowedzera sezvo mukadzi ari nemakore.
Kune mukadzi wemakore makumi matatu nematatu, njodzi ndeye1 muna 385. Pakazosvika makore makumi mana, njodzi inokwana 1 mu 106. Paka 45, njodzi inowanikwa muna 1 mu30. 80 kusvika 85 muzana yevana vane Down syndrome vanoberekerwa vakadzi pasi pe35.
Uyezve, mukadzi ane mwana mumwe ane Down syndrome anowanzova nemumwe mwana ane Down syndrome. Varume nevakadzi vanogonawo kudarika chirwere ichi kune vana kuburikidza nekuendesa kana vakagadzirisa zvinhu.
Makore ekurarama
Mumakore achangopfuura, tarisiro yehupenyu yevanhu vane Down syndrome yakavandudza zvikuru. Muna 1983 tarisiro yeupenyu yaiva 25; nhasi iri 60. Inenge 25 kubva muzana yemafungiro ane trisomy 21 inoguma mukupererwa pamuviri kana kuberekwa. 85 muzana yemucheche ane Down syndrome vanopona kusvika kune rimwe gore remakore.
Sources:
Center for Disease Control (6 Gumiguru 2006). "Kuvandudzwa kweNyika Yakapararira Inofanirwa 18 Kusarudzwa Kukuru Kwekuberekwa Kwekuzvarwa, United States, 1999-2001." Kushungurudza uye Kufa Vhiki Yevhiki 54 (51 & 52): 1301-1305.
Huether, CA (1998). Maternal age chaiyo maonero ekuda kwehutachiona hweA Down syndrome pakati pekuzvarwa patsva mune vatsvene uye mamwe madzinza anobva kuOhio neguta reAtlanta, 1970-1989. J Med Genet 35 (6): 482-490.
Mayo Clinic Staff. Down syndrome. (nd). Yakadzorerwa musi waMarch 26, 2016, kubva pawww.www.mayoclinic.org/diseases-conditions/down-syndrome/basics/definition/con-20020948
Akarasika-Gunderson, Karen. Vacheche vane Down Syndrome: Vabereki Vatsva Bhuku rinonzi Woodbine House. 1995
Chii Chinonzi Syndrome? (nd). Yakadzorerwa musi waMarch 26, 2016, kubva pawww.www.ssss.org/Down-Syndrome/What-Is-Down-Syndrome/