Zvitemo zviviri zvinokonzera Rapid Aging
Hazvishamisi kutarisa makore mashomanana kana kupfuura kudarika iwe chaizvoizvo uri. Asi, fungidzira kutarisa makumi emakore akakura kudarika makore ako. Kune vanhu vane progeria, ruzivo rwemamiriro ezvinhu hunokonzera kukwegura nokukurumidza, hazvisi zvisizvo kutarisa makore makumi matatu kana kupfuura kupfuura zvavari chaizvo.
Nekufambira mberi kunowanzobatanidzwa neHutchinson-Gilford progeria, izwi racho rinogonawo kureva Werner syndrome, inozivikanwa sevanhu vakuru.
Hutchinson-Gilford Progeria
Hutchinson-Gilford progeria inoshamisa zvisingashamisi, inosangana nepamusoro pevana 1 kusvika ku4 mamiriyoni 8. Vana vane progeria vane chimiro chechimiro kana vachizvarwa. Zviratidzo zvechiitiko zvinotanga kuratidza chero nguva isati yapera makore maviri apo mwana anokundikana kuora uye ganda rinoshanduka. Kupfuuridza nguva. mwana anotanga kufanana nomunhu akwegura. Izvi zvinogona kusanganisira:
- Kutsemura bvudzi uye mhanza
- Zvipfeko zvakakura
- Kuchengetedza maziso
- Mutsara muduku
- Kugadziriswa kwezino kwakaderera
- Mhino yakagadzirirwa
- Nhengo dzemaonda uye mazita anozivikanwa
- Short stature
- Kurasikirwa kwemuviri wemafuta
- Low bone density ( osteoporosis )
- Unyoro huri pamwe
- Hip dislocations
- Chirwere chepfungwa uye atherosclerosis
Munenge 97 muzana yevana vane progeria ndivo Caucasian. Kunyange zvakadaro, vana vanovhiringidzika vanotarisa zvakajeka zvakafanana pasinei nemadzinza avo akasiyana. Vana vazhinji vane progeria vanorarama kusvika makore gumi nemashanu uye vanofa nehosha yemwoyo.
Werner Syndrome
Werner syndrome inowanikwa munenge mamiriyoni makumi maviri nemakumi maviri.
Zviratidzo zveWerner syndrome - sechimiro chemafupi kana maitiro asina zvekuita zvepabonde - anogona kupa panguva yehuduku kana kuti kuyaruka. Zvisinei, zviratidzo zvinowanzoonekwa zvakajeka kana munhu achirova pakati pe30s. Zviratidzo zvinogona kusanganisira:
- Kupikisa uye kuputika kwechiso
- Kupera kwemisasa mashoma
- Ganda rako uye kurasikirwa kwamafuta pasi peganda
- Kuveura bvudzi nekushaya bvudzi
- Izwi rakanyanyisa
- Dental maitiro asina kunaka
- Yakaderera mafungiro
Werner syndrome inowanzoitika kune vanhu veJapan neSardinian nhaka. Vanhu vane Werner syndrome vanopukunyuka kusvika pamakore ekuzvarwa vane makore makumi mana nemashanu, vanowanzoputsika nehosha yemwoyo kana kenza.
Future Research
Werner syndrome inokonzerwa nekuchinja kwemuviri weWRN pane chromosome 8. Progeria inokonzerwa nekuchinja kwemuviri weLMNA pane chromosome 1. I gene LMNA inobereka Lamin A protein, iyo inotakura musimboti wemasero edu pamwe chete. Vatsvakurudzi vanodavira kuti masero aya asina kushandiswa anokonzera kukwegura nokukurumidza kunobatana nekufambira mberi. Vatsvakurudzi vanotarisira kuburikidza nekudzidza majini aya avo vanogona kugadzira kurapwa kwemamiriro ose maviri pamwe nehosha iyo inoguma ichikuvadza kune vanhu vane mafambiro maviri-anofanana ne atherosclerosis nedzimwe zvirwere zvine chokuita nokukwegura.
> Sources:
Kaiser, HW, (2002). Hutchinson-Gilford progeria. eMedicine, yakawanikwa pa http://www.emedicine.com/derm/topic731.htm
The Progeria Research Foundation.
Scientific American.com. (1999). Chii chatinoziva nezvechikonzero cheWerner syndrome uye nekufambira mberi, chirwere chinotungamirira kukukwegura kusati kwavapo kuvana?
Wozniacka, A. (2002). Progeria (Werner syndrome). eMedicine