Kutayika kwakumva kungachepetse mwayi wanu, kumayambitsa kusiya kucheza, ndikubweretsa mavuto amalingaliro.
Lingaliro latsopano la makutu a ng'ona.
Anthu opitilira 1.2 biliyoni padziko lonse lapansi amasiya kumva. Koma ng’ona zimamva bwino kwambiri kwa moyo wawo wonse ndipo zimatha kukhala zaka 70. Chifukwa chimodzi ndi chakuti ng'ona zimatha kupanga maselo atsopano atsitsi, ndi University of Uppsala gulu lofufuza panopa likufufuza chifukwa chake. Tikukhulupirira, kumvetsetsa biology ya ng'ona kungapindulitse anthu omwe samamva.
"Titha kuwona kuti maselo atsopano atsitsi akuwoneka kuti apangidwa kuchokera ku kuyambitsa kwa maselo otchedwa othandizira, omwe amalumikizana ndi ng'ona zomwe zili ndi maselo enaake omwe anthu amawoneka kuti alibe. Lingaliro lathu ndilakuti minyewa yomwe imanyamula zilakolako kuchokera ku ubongo, zomwe zimatchedwa kuti minyewa yotulutsa, imayambitsa kukulanso, "akutero Helge Rask-Andersen, pulofesa wa otology yoyesera ku Yunivesite ya Uppsala komanso m'modzi mwa ochita kafukufukuyu, yemwe adasindikizidwa posachedwa. magazini Frontiers mu Cell and Developmental Biology.
Anthu opitilira mabiliyoni padziko lonse lapansi amasiya kumva, zomwe zimapangitsa kuti anthu azivutika kwambiri ndipo nthawi zambiri amachepetsa moyo wawo. Chifukwa chofala kwambiri cha kutayika kwa makutu ndiko kulephera kwa zolandilira m'makutu, ndipo zolandilirazi sizingapangidwenso mwa anthu. Komabe, atha kukhala m'zolengedwa zomwe si zanyama monga ng'ona, zomwe zimasunga kumva mwamphamvu m'moyo wawo wonse ngakhale zimakhala zaka 70.
Zimadziwika kuti nyama zimatha kubwezeretsa mwamsanga maselo atsitsi m'makutu mwawo ngati awonongeka. Koma sizidziwikiratu kuti zichitika bwanji. Ng'ona zimamva bwino kwambiri zomwe zimasinthidwa kukhala pamtunda komanso pansi pamadzi. Chodziwika bwino ndi chakuti kukhudzika kwa ma receptor pamagawo osiyanasiyana kumakhudzidwa ndi kutentha kwakunja, zomwe zimapangitsa kuti zikhale zoyenera pa zoopsa zamitundu yosiyanasiyana m'malo osiyanasiyana panthawi ya chisinthiko.
Khutu la ng'ona lawunikidwa mu kafukufuku watsopano ndi ofufuza makutu ku Uppsala University Hospital pamodzi ndi ofufuza a Uppsala University. Magulu ofufuza ochepa padziko lapansi adaphunzira zamkati mwa khutu la ng'ona, ndipo ochita kafukufukuyu adagwiritsa ntchito ma electron microscopy ndi matekinoloje a molekyulu.
Chinthu chimodzi chochititsa chidwi chimene anatulukira chinali chakuti tinthu ting’onoting’ono ta maselo timatuluka m’khutu la ng’ona. Tinthu tating'onoting'ono timafanana ndi ma exosomes ndipo timatha kupanga ma enzymes omwe amasweka kapena kupanga nembanemba yomwe cilia m'khutu imamveka ngati phokoso. khutu.
"Lingaliro limodzi ndilakuti izi zimawonjezera chidwi chakumveka komanso kumva bwino. Chiyembekezo chathu n’chakuti tiphunzire mmene ng’ona zimasinthira maselo atsitsi lawo n’kudzakhalanso ndi mwayi wogwiritsa ntchito zimenezi kwa anthu m’tsogolo,” akutero Helge Rask-Andersen.
Reference: "Kubadwanso Kwatsopano mu Auditory Organ in Cuban and African Dwarf Crocodiles (Crocodylus rhombifer ndi Osteolaemus tetraspis) Kodi Tingaphunzire Chiyani kwa Ng’ona Mmene Tingabwezeretse Kumva Kwathu?” ndi Hao Li, Karin Staxäng, Monika Hodik, Karl-Gunnar Melkersson, Mathias Rask-Andersen ndi Helge Rask-Andersen, 4 July 2022, Frontiers mu Cell and Developmental Biology.
DOI: 10.3389/fcell.2022.934571
