Majuru anoita kuti uropi husachembera here?

Majuru anoita kuti uropi husachembera here?

Hazvigoneki, tichiziva kuti chidzidzo chitsva chakaratidza kuti masvosve anokwanisa kushandura kubva kumushandi kuenda panzvimbo yakaita seyamambokadzi nekuda kwekushandurwa kudiki muprotein imwe muuropi hwawo.

Muchidimbu, tsvagiridzo yakaratidza kuti nyanzvi dzezvinhu zvipenyu paPerelman School of Medicine paYunivhesiti yePennsylvania dzakabudirira kupatsanura tsinga kubva muuropi hwemujuru wekuIndia wesvosve Harpegnathos saltator, ane zita rinobva mukukwanisa kusvetuka masendimita mashoma, maererano nepepanhau reBritish. , "Daily Mail".

Muchidzidzo ichi, mhedzisiro yacho yakabudiswa mupepanhau Cell, vaongorori vakawana kuti puroteni inonzi Kr-h1 inodzora shanduko yemasvosve kubva kuvashandi vechinyakare, vane basa rekutsvaga chikafu, kune mamwe masvosve "mahosi", ayo vane basa rekubereka mukoroni isina mambokadzi mukuru.

Purofesa Roberto Bonacio, muongorori anotungamirira muchidzidzo ichi, akatsanangura kuti uropi hwemhuka hunoratidzwa nekukwanisa kwavo kuumba, vachicherechedza kuti maitiro akafanana anoitika muhuropi hwevanhu, zvakadai sekushanduka kwemaitiro panguva yekuyaruka, iyo nzira inofanirwa kuti munhu ararame, asi. mamorekuru anoidzora.

Mumusha wemasvosve, vashandi vanochengeta boka racho nokutsvaka zvokudya uye kurwisana nevanorwisa, nepo basa guru ramambokadzi riri rokukandira mazai akasanganiswa neasina kubereka.

hunhu hwevanhu

Mumhuri H. Saltator, vashandi vane simba rekubereka uye kuisa mazai, asi kuchinja uku kunodzivisa kuvapo kwemambokadzi. Zvino kana mambokadzi afa, nguva yekurwa kunotyisa inotanga, mushure mezvo vashandi vashoma vanowana kodzero yekubereka uye kuisa mazai, izvo zvinotungamirira kukuchinja kukuru kwehutano hwevanhu mukati mekoloni, vachicherechedza kuti kuchinja uku kunogona kuchinjwa uye kuwedzera. vahosi vakashanduka kuita vashandi zvakare..

Bonacio akataurawo kuti "mahosi anozvarwa ari mambokadzi," uye pavanobuda semambokadzi mukuru kubva mupupa kana gonye kubva muzai, vane mapapiro, nepo nyuchi dzevashandi dzinozvarwa dzisina mapapiro uye hadziite madzimambo kunze kwekunge paine kuchinja mumamiriro ezvinhu mukati mekoloni.

gadzirisa dambudziko

Akaratidzawo kuti ruzivo rwakanga rusingazivikanwe kare, asi kuti chakavanzika chiri pakuti kugona kushandura kubva kuvashandi vevashandi kuenda kune mamwe mambokadzi anokwanisa kubereka, saka vatsvakurudzi vakagadzira nzira yekuparadzanisa neuroni kubva kumajuru uye kuichengeta murabhoritari. izvo zvakavabvumira kuti vaongorore kuti mhinduro yeMasero inobudisa sei mahomoni maviri, juvenile JH3 uye ecdysone 20E, iyo inowanikwa pamatanho akasiyana-siyana mumitumbi yevamambokadzi nevashandi.

Vatsvakurudzi vakawana kuti JH3 uye 20E yakagadzira maitiro akasiyana ekugadzirisa majini muuropi yevashandi nemambokadzi, uye kuti JH3 yakawanda uye zvishoma 20E yakaita kuti masvosve aite sevashandi, asi huwandu hweJH3 uye huwandu hwakawedzerwa hwe20E hwakatungamirira kune zvakasiyana.

Mhedzisiro pamaneuroni

Chakanyanya kushamisa, zvisinei, ndechekuti mahomoni ese ari maviri anokanganisa tsinga nekuita Kr-h1, puroteni inodzvanya maitiro evashandi uye inosimudzira maitiro emambokadzi.

Nenzira iyi, Kr-h1 yakaita senge mwenje chinja, uye mahormone anoita sesimba sosi inobatidza kana kudzima.

Muongorori Shelley Berger wepaYunivhesiti yePennsylvania akati puroteni iyi inodzora majini akasiyana muvashandi nemadzikadzi uye inodzivirira masvosve kuita hunhu husina kufanira munzanga, zvinoreva kuti protein yeKr-h1 inodiwa kuchengetedza miganhu pakati pemakirasi emagariro uye kuona kuti vashandi vanoenderera mberi. kushanda vanamambokadzi vachienderera mberi.Kana kuti mamwe madzimai mukuita basa ravo mukuberekana mukati mekoroni.

Zvichida shoko guru rechidzidzo ichi nderekuti munharaunda dzemasvosve, maitiro akawanda emaitiro anoonekwa panguva imwe chete mujenome uye kuti kudzorwa kwemajini kunogona kuita zvakakosha pamaitiro anoitwa nechinhu chipenyu.

Mune mamwe mazwi, munhu kana chipenyu chinogona kuita chero basa zvichienderana nekuti ma genetic switch anobatidzwa kana kudzimwa.

Saizvozvo, Purofesa Bonacio anotenda kuti mamwe mapuroteni akafanana anogona kuita mabasa akafanana muhuropi hwakaoma, hwakadai sehuropi hwevanhu, achicherechedza kuti kuwanikwa kwemapuroteni aya rimwe zuva kunogona kutibvumira kudzoreredza kuchinjika kune huropi hwakarasika - semuenzaniso, yevanhu vari kuchembera.

Mune zvidzidzo zvenguva yemberi, vatsvakurudzi vanoronga kuongorora basa reKr-h1 mune zvimwe zvipenyu, uyewo kuti zvakatipoteredza zvinokanganisa sei kutonga kwemajini, uye nekudaro plastiki yeuropi uye kugadzirisa.

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