Owonjezera khromozomu anthu. kuvutika chromosomal

Thupi la munthu - ndi zovuta multidimensional dongosolo, amene umagwira ntchito pa mbali zosiyanasiyana. Ziwalo ndi maselo ungagwire ntchito nthawi yoyenera, mu njira yeniyeni amuzolengedwa kuyenera kukhudza zinthu zina. Izi zimafunika maziko olimba, ndiye kufala zolondola pa malamulo chibadwa. Ndi chibadidwe zinthu majini akulamulira chitukuko cha mwana wosabadwayo lapansi.

Komabe, majini kusintha mfundo zina zimachitika wosawoneka mu mayanjano lalikulu kapena ikukhudzana bwanji ndi chibadwa payekha. zolakwa amatchedwa masinthidwe a chibadwa. Nthawi zina, vuto limeneli likugwirizana ndi mayunitsi structural maselo, ndiko DNA lonse. Choncho, mu nkhani iyi, zolakwa imatchedwa khromozomu kusintha.

Mukachipinda anthu bwinobwino lili nambalayi DNA. Iwo amagwirizana ndi chibadwa chomwecho. The lonse la awiriawiri 23 DNA, koma nthawi zosakwana 2 maselo a nyongolosi. Ichi ndi chifukwa chakuti pa umuna maphatikizidwe wa umuna ndi dzira maselo ayenera kuimira kuphatikiza zonse za chibadwa zonse zofunikira. yogawa zawo sanachitike mosintha, ndi kuti mosamalitsa ena, ndi ndondomeko liniya ndi chimodzimodzi kwa anthu onse.

masinthidwe Chromosomal zimathandiza kuti kusintha mu chiwerengero chawo ndi dongosolo. Motero, pangakhale owonjezera khromozomu kapena, Tikawonetsetsa iwo tidzakusowa. vutoli zimenezi zikhoza mimba kapena kulimbikitsa maonekedwe a matenda chromosomal.

Mitundu DNA ndi kuvutika awo

Khromozomu - chonyamulira cha uthengawu ku maselo a khungu. Bwaloli kawiri DNA mu zovuta ndi histones. Ndimapanga chikuchitika mu DNA prophase (kwa nthawi magawano khungu). Mnthawi metaphase ndi mosavuta kuphunzira. DNA ndi lopangidwa chromatids awiri kuti chikugwirizana constriction yaikulu inali pa equator selo. constriction chachikulu ukugawa khromozomu ziwembu 2 chimodzimodzi kapena osiyana amayesetsa.

Zotsatirazi mitundu DNA:

• metacentric - ndi manja a kutalika wofanana;
• submetacentric - ndi manja a kutalika wosiyana;
• acrocentric (ndodo) - wina waufupi ndi zina mapewa yaitali.

Anomalies ali ndi yaikuluikulu. njira Research ikhoza kusintha kutengera kuti mukuona. Ena wapezeka ndi maso ndi sizingatheke. Zikatero, ntchito njira masiyanidwe kudetsa, koma pamene gawo anakhudzidwa ndi kuchita masamu mu mamilioni a nucleotides. Only ndi kukhazikitsa nyukiliotayidi ndondomeko angazindikire masinthidwe yaing'ono. A kuyan'anila zikuluzikulu zimabweretsa zotsatira kutchulidwa pa thupi la munthu.

Popeza munthu asakhale ndi vutoli chosayenerera otchedwa monosomy. Owonjezera khromozomu mu thupi - trisomy.

matenda chromosomal

matenda Chromosomal - matenda majini zimene zimachitika chifukwa cha chromosomal chosayenerera. Yak chifukwa kusintha topangira DNA kapena rearrangements lalikulu

Pamene mankhwala kunali kutali mlingo atsopano a chitukuko, izo ankakhulupirira kuti munthu 48 DNA. Izo zinali kokha mu 1956 anatha molondola kuwerengetsa enumerate ndi kuzindikira ubale pakati pa wakuswa topangira DNA ndi zina matenda otengera kwa makolo.

zaka 3 Patapita French wasayansi J. Lejeune, chinapezeka kuti kuphwanya anthu a chitukuko maganizo ndi kukana matenda mwachindunji zokhudzana ndi kusintha kutengera mapangidwe. Zinali za khromozomu owonjezera 21. Iye ndi mmodzi wamng'ono, koma anaikira ambiri chibadwa. Owonjezera khromozomu unkachitika mu 1 mwa 1,000 akhanda. matenda chromosomal ndi ambiri kuposa amene anaphunzira ndi odziwika matenda Down.

Mu 1959 yomweyo anali kuphunzira ndi kutsimikiziridwa kuti kukhalapo kwa mwamuna owonjezera X khromozomu kumayambitsa matenda Klinefelter mu umene munthu amadwala retardation maganizo ndi osabereka.

Komabe, ngakhale kuti kuvutika chromosomal ali waona ndi kuphunzira kwa nthawi yaitali, ngakhale mankhwala amakono sangathe kuchiza matenda chibadwa. Koma m'malo modernized njira matenda masinthidwe amenewa.

Zimayambitsa ndi khromozomu owonjezera

The anomaly ndi chifukwa chokha zikamera wa khromozomu 47 mmalo mwa Akatswiri 46. m'munda wa mankhwala zatsimikiziridwa kuti wochititsa ndi khromozomu owonjezera - m'badwo wa mayi woyembekezera. Akulu apakati, wamkulu mosavuta nondisjunction. Basi chifukwa ichi, akazi akulangizidwa kubereka zaka 35. Mu nkhani ya mimba pambuyo isanayambike m'badwo uno ayenera ndisanabadwe.

The zinthu zomwe zimathandiza zikamera wa khromozomu owonjezera, monga mlingo wa anomalies adakulabe mu dziko lonse, mlingo wa kuwonongeka kwa malo, ndi zina.

Akukhulupirira kuti asakhale ndi vutoli owonjezera kumachitika ngati muli Nthawi mtundu wofanana. Ziri monga nthano: Kafukufuku wasonyeza kuti makolo amene ana amadwala matenda chromosomal ali mwangwiro wathanzi karyotype.

Matenda a kuchezera mwana ndi chromosomal chosayenerera

Kubvomereza kuyan'anila za DNA, lotchedwa aneuploidy mosamala, ndikuzindikiritsa akusowa Ndisanaumbidwe kapena zotsala DNA. Amayi oyembekezera wamkulu kuposa zaka 35 ayenera kukayezetsa ndondomeko yodalirika nyemba madzimadzi amniotic. Ngati ife tikupeza kuphwanya karyotype, mayi woyembekezera ayenera kutsirizitsa mimba, monga mwana anabadwa moyo zonse avutika matenda popanda mankhwala.

Violation DNA ambiri ali ndi chiyambi akuchikazi Komabe tiyenera kufufuza osati maselo yoopsa, komanso zinthu zimene anapanga pa yakucha wa. Ndondomeko amatchedwa matenda a matenda majini a thupi kumalo ozizira.

syndrome pansi ndi

Asayansi woyamba kufotokoza Mongolism ndi Pansi. Owonjezera khromozomu, majini matenda pamaso umene chofunika kukhala, wakhala anaphunzira kwambiri. Pamene Mongolism limapezeka pa khromozomu 21 trisomy. Kuti ndi munthu wodwala m'malo 46 akutembenukira 47 DNA. Mbali yaikulu - ndi kwanthawi mu chitukuko.

Ana amene ali pamaso pa khromozomu owonjezera zimawonedwa, m'mavuto aakulu kuphunzira zinthu m'masukulu, choncho akufunika njira zina ophunzirira. Kuwonjezera pa maganizo, pali kupatuka, ndipo kukula, akuti: slanting maso, kuphwa nkhope, milomo lonse, lilime mosabisa, adzafupikitsidwa kapena anawonjezera miyendo ndi mapazi, mwinji wa khungu mu malo khosi. Amayembekezeka kukhala ndi moyo pafupifupi zaka 50.

syndrome Patau

Komanso anafotokoza trisomy Patau syndrome, imene pali mabaibulo atatu a khromozomu 13. Chinthu chapadera ndi kusokoneza dongosolo chapakati mantha kapena underdevelopment ake. Odwala anati malformations angapo, kuphatikizapo zotheka matenda obadwa nawo a mtima. Oposa 90% ya anthu ndi matenda a Patau kufa mu chaka choyamba cha moyo.

syndrome Edwards

anomaly izi, ngati anthu yapita, amatanthauza trisomy. Pankhaniyi tikulankhula za khromozomu 18. syndrome Edwards amakhala ndi matenda osiyanasiyana. Kwenikweni, odwala kusonyeza fupa mapindikidwe, zinasintha mawonekedwe a Chigaza, ndi mavuto ndi dongosolo kupuma ndipo mtima. Moyo amayembekezeka zambiri za 3 miyezi, koma ena ana kupulumuka ku chaka.

matenda Endocrine ndi kuvutika chromosomal

Kuwonjezera syndromes awa, kuvutika chromosomal, pali ena amene apo palinso n'zosangalatsa kumva ndi structural anomaly. matenda monga:

1. Triploids - ochepa chabe khromozomu matenda amene chiwerengero chawo modal ndi 69. Mimba zambiri umatha padera oyambirira, koma yopulumutsira mwanayo sakhala miyezi oposa 5, pali zopindika ambiri kubadwa.
2. Wolf-Hirschhorn matenda - ndi mmodzi wa kuvutika osowa chromosomal, amene akufotokozera chifukwa kufufutidwa ya kumapeto wapotalikira wa lalifupi mkono wa khromozomu. Mbali yapadera ya matenda ndi 16,3 pa khromozomu 4p. Chitsanzo zizindikiro - mavuto chitukuko, kukula retardation, khunyu, ndi mmene nkhope
3. Prader-Willi syndrome - matenda alipo ochepa. Amenewa anomalous khromozomu 7 chibadwa kapena mbali 15 makolo khromozomu sichikugwira ntchito, kapena zichotsedwa. Tags: kupindika msana, strabismus, anachedwa kukula ndi aluntha, kutopa.

Kodi polera mwana ndi chromosomal matenda?

Polera mwana ndi matenda obadwa chromosomal si kophweka. Kuti musavutike, malamulo ena ayenera kutsata. Choyamba, tiyenera nthawi yomweyo kuthetsa kutaya mtima ndi mantha. Chachiwiri, safuna nthawi yocheza kufunafuna ponena, izo kulibe. Kachitatu, n'kofunika kusankha mtundu wa thandizo chofunika kwa mwana ndi banja, ndipo kenako kutembenukira kwa akatswiri thandizo kuchipatala, maganizo ndi maphunziro.

M'chaka choyamba cha matenda moyo n'chofunika kwambiri, monga injini ntchito kuwerenganso nthawi imeneyi. Mothandizidwa ndi akatswiri mu mwana mwamsanga kuphunzira galimoto. M'pofunika mwachikulu kufufuza mwanayo mu kudwala pamaso kumva. Komanso, mwanayo ayenera kuonedwa ndi dokotala, m'thupi yemwenso ndi neuropsychiatrist.

Makolo akulimbikitsidwa kulowa gulu lapadera kuti apeze wapatali malangizo kwa anthu omwe anagonjetsa imeneyi ndi kukhala okonzeka kugawana nawo.

Media owonjezera khromozomu zambiri wochezeka, kupanga zosavuta kulera, ndipo ngati kwambiri kupambana pabvomelezo la munthu wamkulu. Mlingo wa chitukuko cha mwana wakupambulika kudzadalira nkobvuta zidzakhala kuphunzitsa zofunika. ana odwala, ngakhale zomwe zikutsalirazi kumbuyo ena, koma iwo amafuna kwambiri chidwi. Nthawi zonse n'kofunika kulimbikitsa ufulu wa mwana. Self kuphunzitsidwa kukhala ndi Mwachitsanzo, kenako sikuti kudikira nthawi yaitali.

Ana ndi matenda chromosomal amanenedwa ndi luso lapadera amene anafotokoza. Izo zikhoza kukhala kuimba kapena zojambula. Nkofunika kukhala mwana wanu, masewera yogwira ndi luso osauka galimoto, kuwerenga, ndi anazolowera ku boma ndi olondola. Ngati mwana kufotokoza zonse kukhumba kwanga, chisamaliro, chisamaliro ndi chikondi, iye zomukonderanso.

Kodi pali mankhwala?

Pakali pano, matenda sangakhoze anachiritsidwa khromozomu; Njira iliyonse akufuna ndi experimental, koma efficacy awo matenda sichinayambe zatsimikiziridwa. Patsogolo chitukuko cha socialization ndi kupeza luso kumathandiza thandizo kuchipatala ndi maphunziro mwadongosolo.

The mwana wodwala ayenera nthawi zonse kuonedwa ndi akatswiri monga mankhwala anadza kwa mlingo pa okhoza kupereka zida zina zofunika ndi mitundu yosiyanasiyana ya mankhwala. Aphunzitsi amagwiranso ntchito njira zamakono kuphunzitsa ndi konzanso mwanayo.