Myoglobin: yintoni, ukusebenza kunye nokuba kuthetha ntoni xa kuphezulu

Umxholo

• Imisebenzi yeMyoglobin
• Luqhutywa njani uviwo
• Kuthetha ntoni i-myoglobin ephezulu

Uvavanyo lwe-myoglobin lwenziwa ukujonga isixa sale proteni egazini ukuze kuchongwe ukonzakala kwemisipha kunye nentliziyo. Le proteni ikwimisipha yentliziyo kunye nezinye izihlunu emzimbeni, ukubonelela ngeoksijini efunekayo kuthintelo lwezihlunu.

Ke, i-myoglobin ayiqhelekanga egazini, ikhutshwa kuphela xa kukho ukwenzakala kwesihlunu emva kokonzakala kwezemidlalo, umzekelo, okanye ngexesha lokuhlaselwa sisifo sentliziyo, apho amanqanaba ale protein aqala ukwanda egazini. Iiyure ezi-1 ukuya kwezi-3 emva kokuthelekiswa, ziphakama phakathi kweeyure ezingama-6 nezisi-7 kwaye zibuyela esiqhelweni emva kweeyure ezingama-24.

Ke ngoko, kubantu abasempilweni, uvavanyo lwe-myoglobin alunampilo, kuphela xa ulungile xa kukho ingxaki ngawo nawuphi na umsipha emzimbeni.

Imisebenzi yeMyoglobin

I-Myoglobin ikhona kwimisipha kwaye inoxanduva lokuzibophelela kwioksijini kunye nokuyigcina de ifuneke. Ke, ngexesha lomsebenzi, umzekelo, ioksijini egcinwe yi-myoglobin ikhutshwa ukuze ivelise amandla. Nangona kunjalo, phambi kwayo nayiphi na imeko ethintela izihlunu, i-myoglobin kunye nezinye iiproteni zinokukhutshelwa kusasazo.

I-Myoglobin ikhona kuzo zonke izihlunu zomzimba, kubandakanya imisipha yentliziyo, kwaye ke ikwasetyenziswa njengophawu lokulimala kwentliziyo. Ke, umlinganiso we-myoglobin egazini uyacelwa xa kukho urhano lokonzakala kwemisipha okubangelwa:

• Izihlunu zemisipha;
• Ukubetha ngamandla izihlunu;
• Ukudumba kwezihlunu;
• Ukuhlaziywa kweRhabdomyolysis;
• Ukuxhuzula;
• Ukuhlaselwa yintliziyo.

Nangona inokusetyenziswa xa kukrokreleka ukuhlaselwa yintliziyo, uvavanyo olusetyenziswayo okwangoku ukuqinisekisa ukuxilongwa luvavanyo lwe-troponin, olulinganisa ubukho benye iprotein ekhoyo entliziyweni kwaye engachukunyiswa kukonzakala kwemisipha. Funda ngakumbi ngovavanyo lwe troponin.

Ukongeza, ukuba ubukho be-myoglobin egazini buqinisekisiwe kwaye bunamaxabiso aphezulu, uvavanyo lomchamo lunokwenziwa ukuvavanya impilo yezintso, kuba amanqanaba aphezulu e-myoglobin anokubangela ukonakala kwezintso, kuphazamise ukusebenza kwayo.

Luqhutywa njani uviwo

Eyona ndlela iphambili yokwenza uvavanyo lwe-myoglobin kukuqokelela isampulu yegazi, nangona kunjalo, kwiimeko ezininzi, ugqirha unokucela isampulu yomchamo, njengoko i-myoglobin ihluzwa kwaye isuswe zizintso.

Ngalo naluphi na uviwo, akukho mfuneko yokwenza naluphi na uhlobo lokulungiselela, njengokuzila ukutya.

Kuthetha ntoni i-myoglobin ephezulu

Iziphumo eziqhelekileyo zovavanyo lwe-myoglobin azilunganga okanye zingaphantsi kwe-0.15 mcg / dL, kuba kwiimeko eziqhelekileyo i-myoglobin ayifumaneki egazini, kuphela kwimisipha.

Nangona kunjalo, xa amaxabiso angaphezulu kwe-0.15 mcg / dL eqinisekisiwe, kubonisiwe kuvavanyo lokuba i-myoglobin iphezulu, ehlala ibonisa ingxaki entliziyweni okanye kwezinye izihlunu emzimbeni, kwaye ke ugqirha unokuyalela iimvavanyo ezingaphezulu. ezifana ne-electrocardiogram okanye iimpawu zentliziyo ukuze zifike kwisifo esithile.

Amanqanaba aphezulu e-myoglobin anokuba luphawu lwezinye iingxaki ezingahambelani nezihlunu, ezinje ngokusela kakhulu okanye iingxaki zezintso, ngenxa yoko isiphumo kufuneka sihlale sivavanywa nogqirha ngokusekwe kwimbali yomntu ngamnye.