ImpiloImithi

Leptin (hormone) ukunyusele - kusho ukuthini? Leptin - a ukugcwaliswa i-hormone: umsebenzi kanye nendzima yayo

Babalelwa ku-2011 World Health Organization, abacwaningi baye baqala ukuba banake ezingozini ezingase zibe khona ukukhuluphala. Kusukela ngaleso sikhathi, kakade seluqalile ukuthola izici ngaphezulu lolu bhadane, ukukhuluphala babé kuncike ngisho nezingane. iminyaka ambalwa nje ngaphambili, ososayensi ayezifundile leptin - hormone unesibopho umuzwa satiety futhi ingasetshenziswa ekwelapheni lesi sifo.

A side umphumela ucwaningo parabiosis

Umlando ukutholakala yalesi i-hormone ixhunyaniswe ne ucwaningo kwenziwe usosayensi American Hervey, wayenesithakazelo izinqubo parabiosis. Le nqubo yemvelo ngaphandle kwesibeletho splicing amabili futhi ngezinye izikhathi ezintathu izilwane. Ngesikhathi esifanayo baqala khona ezivamile isimiso sokujikeleza kwegazi futhi lymph. Ucwaningo lolu hlobo zazidingeka ukuze ukufunda kube khona ukusebenzisana phakathi hormone nezicubu spliced.

Usosayensi wayenesithakazelo incazelo olunzulu yonke imisebenzi ye-ngxenye. Njengoba ngokuvamile kwenzeka kwezesayensi, phakathi icala ngokuhamba ucwaningo satiety yakhe i-hormone i-leptin kwatholakala. Kakade ngawo-1998, le ndaba banyathelisa izihloko mayelana 600.

Yiziphi imisebenzi leptin emzimbeni?

Kuhunyushwe kusuka ngolimi lwesiGreki negama lakhe lisho ukuthi "emide emincane, ababuthakathaka." Nokho, izwi lokugcina asikwazi ngokuthi. Phela, indima yakhe emzimbeni kuphezulu kakhulu. Leptin - hormone okungokukaNkulunkulu uhlobo olukhethekile izithako okuthiwa adipokines. Ngokungafani nezinye hormone, lakhicitwe akuzona izitho kohlelo endocrine, futhi adipose izicubu. Adipokines emzimbeni kukhona umsebenzi ulwazi. Ngokwesibonelo, i-leptin uyakwazi adlulisele ulwazi le ngxenye ngokuthi singakanani esingaphezu noma esingaphansi kuka amanoni kwaba emzimbeni ngemva ukungenisa. Ngakwelinye ihlangothi, le ngxenye ulawula ukudla - ukunyuselwa noma kuyancipha iphango.

Leptin imisebenzi ayikwazi phansi. Ukhuthaza esesuthi ukucindezelwa, kwandisa thermogenesis izinqubo, isb translation amafutha zibe amandla nokuthi okuphambene nalokho. Leptin ehilelekile ukukhiqizwa Dopamine. Esikhathini insikazi umzimba leptin inomthelela njalo umjikelezo wokuya esikhathini. Iphinde ngcono ukusebenza lonke zesifazane uhlelo zokuzala iyonke. Ngaphezu kwalokho, lokhu peptide ehilelekile ekuthuthukiseni amasosha omzimba.

Leptin isebenza ngokubambisana ne-hypothalamus. Lapho umuntu ibusa ukudla, kuba le ngxenye nalo uthola amasignali ezibangela umuzwa ukugcwala. Ubudlelwano ka-leptin kanye Dopamine kwatholakala ososayensi akunjalo kudala. Manje kukhona iziphakamiso ukuthi kokubili ukujabula futhi ufisa okudliwayo, kukhona ngenxa yokuntuleka Dopamine futhi leptin kanyekanye.

amazinga leptin kanye nezinkambiso ngabanye

i-leptin Amanani kungaba ezahlukene kuye lenye abangontanga ethile. Futhi, inani leptin ekhiqizwa incike ubulili. Ngaphambi ukuqala bathombe abafana namantombazane mayelana esilinganayo leptin. Khona-ke isimo sishintshe kakhulu. Njengoba okumelwe kwenziwe kuhlale ngaphezulu insikazi umzimba amafutha kwezicubu, amazinga-leptin futhi lapho kuqala bathombe amantombazane lingaphezulu. Futhi kule inkomba ezithinta i-estrogen.

Ukwakheka hormone

Leptin - hormone kuhleliswa kuyinto peptide. Kuhlanganisa 167 izinto - acid acid izinsalela. Ingxenye enkulu yale ndawo hormone ekhiqizwa ngu amafutha amaseli ngqo. Nokho, ngaphandle kwalezi ungaveza nezinye izinhlobo amaseli. Okungukuthi, yi-placenta, epithelium mammary, mucosa esiswini, imisipha lwamathambo.

Amazinga aphakeme leptin njengoba factor yenhliziyo Umthambo isifo

Nokho, zombili amazinga aphansi kanye eliphezulu zonke hormone ibe nomphumela ongemuhle emzimbeni. Kungokufanayo-leptin. I-hormone ethuthukisiwe - ukuthi kusho nokuthi kungahle kuphazamise inombolo emzimbeni? Okokuqala, amazinga aphezulu leptin kuyisici ingozi izifo ezihlukahlukene. Ngokwesibonelo, i-leptin anda kuphakamisa nokwanda kokungabi nezicubu longitudinal kanye sebethule nosawoti ezahlukene imithambo yegazi, okuholela CHD.

Leptin nesifo sikashukela

Ukungadli ka-leptin ihlobene izifo eziningi. Omunye umphumela oyingozi ukwehluleka emsebenzini wakhe yena sikashukela. Lesi sifo litholakala Muva nje, odokotela, ibuthinta ngokuqondile ku-i-leptin hormone. Uyena obangela lokho, lo peptide kulesi simo? Kubantu enempilo, i-leptin kwandisa umthamo okukhipha glucose imizimba zangaphandle. Futhi-ke kunciphisa synthesis insulin kwamanyikwe. Lapho kukhona isidumbu semali-leptin, iba imbangela odala oluningi kakhulu nge-insulini. It kuqinisa ukuzwela umzimba insulin kanye leptin. Hormone liphakeme abaqalayo zofuzo beyizidlova noma ukungenwa ezinye izici eziyingozi okubangela isifo sikashukela.

Ukuxhumana nenye i-hormone peptide

Enye "Buddy" eyinhloko i-leptin e ukulawulwa yokudla nokuziphatha iyona "indlala i-hormone". Leptin futhi ghrelin (okubizwa ngokuthi i-hormone) nihlanganyele ngokwenza umsebenzi okuphambene. Ghrelin kubangela umuzwa indlala ukungasebenzi ngemva kokudla. Okusanda yabe seyaziwa ukuthi lokhu peptide Kuvusa kwesisindo ngokuhamba kwesikhathi. Njengoba-ke kuveza izinto eziningi okusezingeni eliphezulu ngesikhathi esimweni esicindezelayo. Yingakho ngemva kwengxoxo ende ngakho bafuna okuya ngasethunjini.

Indlela aziphathe i-leptin Ukudla. Kwama-hormone umuzwa ukugcwala

Ngeshwa, inani elikhulu abalandeli ukudla kufanele icaciswe lezi ziqondiso ngaphandle ukuhlolwa ezifanele zazo zonke izingozi ezingase zibe khona umzimba. Iningi ukudla linqume izinga esincishisiwe ukusetshenziswa carbohydrate kanye amafutha in exchange okuyinto ethatha esebenzayo ingxenye leptin hormone. Yena unesibopho yini phambi zonke intombazane noma owesifazane ngokungacabangi wanquma ukuhlala Ukudla ngendlela elukhuni, isibonelo, owaziwa ngokuthi "ezibiyele?" Ubungozi main lihlotshaniswa iziyaluyalu umzimba. Phela, leli Ukudla kuhilela komkhawulo okuphawulekayo ukusetshenziswa kwama-carbohydrate. Ngaphezu kwalokho, lapho cishe sinqatshiwe amafutha, futhi kungaholela ezihlukahlukene endocrine iziyaluyalu.

Abaningi nizwile ukuthi ngemva ekudleni isisindo ubuya, ngisho ngokwezinga elikhulu. Lokhu kungenxa yokuthi ubuchopho ingasaphathwa uqale ukuphendula i-leptin. Ngamanye amazwi, ngemva kwalokhu yokusabela kuya-leptin hypothalamic iba izikhathi eziningana aphansi. Muva nje, owesifazane ewuthi lokuvungula wayesalokhu umuzwa njalo yindlala ngenxa ikhula ngesisindo nakakhulu. Ngaphezu kwalokho, ubuchopho wathola ekuqaleni ukudla inombolo ezanele namasiginali okuvela "izikhathi elambile" unikeza umyalo ukusebenzisa amandla ngangokusemandleni. Ngakho-ke, ezemidlalo kanye nokuzivocavoca inselele yangempela - noma ngaphezulu kungenzeka intombazane uzoqala ahole indlela yokuphila ngaphandle kokuzivivinya.

Ingabe kukhona umuzwa kusukela ekudleni?

Yiqiniso, kule nqubo ukuncipha, ungalahlekelwa esiningi fat umzimba, futhi ngesikhathi esifanayo esikhathini kwetfulwe esifushane. Nokho, zikhona nezinye izimpophoma kanye leptin. I-hormone ethuthukisiwe - kusho ukuthini umuntu uyagijima on ukudla? Cishe, ezingeni layo kakhulu kwehlisa esontweni lokuqala. Shiya namafutha - kodwa kunengqondo uma ubuchopho elahlekelwa ikhono ukuzizwa indlala futhi njalo esimweni "eziphuthumayo"? Ngesikhathi ukumelana ngokuvumelana leptin Kulula kakhulu ukuzuza isisindo ezinsukwini zokuqala ngemva ekudleni.

Abantu abaphethwe zokukhuluphala noma ukukhuluphala ngokweqile, kanye isikhathi kuba nzima ukuba ulahlekelwe isisindo. Kahle hle, umzimba wabo uba akanandaba leptin. Nge esidlweni ngasinye kumele zidle kakhudlwana, ngoba ubuchopho babo kakade cishe ungathathi ngamawala kule hormone ukugcwaliswa isiqiniseko sokuthi umzimba libulawa indlala. Leptin - a ukugcwaliswa i-hormone - alibe lisaba ngabo njengoba enjalo.

Indlela ibhalansi i-leptin futhi ghrelin

Okuwukuphela kwendlela phumani kulo mbuthano ngonya - ukwenza ukuzivocavoca. Lokhu kuzosiza ukuba kancane kancane ukubuyisela hypothalamic leptin ukuzwela. Ngakwelinye ihlangothi, indlala i-hormone ghrelin futhi iza evamile. Ucwaningo luye lwabonisa ukuthi ngisho isigamu sehora ukuzivocavoca kuyasiza kakhulu ukunciphisa lokuhlushwa ghrelin egazini. Ngakho, ukuvivinya umzimba okukhulu kusiza balahle fat ngokweqile kanye Zinciphisa isifiso.

Ukuze ukwazi ukulawula kangcono i-leptin futhi ghrelin ibhalansi emzimbeni, abacwaningi ukunikeza iseluleko esilandelayo. Okokuqala, kumele bathobele a ukuziphatha ngesandla esiqinile kulokhu nsuku zonke - ulale emhlabeni nqo ebusuku futhi uvuke ngesikhathi lesithupha ekuseni. Okwesibili, isidingo ukubhekana ukushaja njalo ekuseni, noma ezinye umzimba. Ngisho umsebenzi encane esiswini esingenalutho, njengoba ucwaningo luye lwabonisa, kusiza ukuthuthukisa ukuzwela insulin kanye glucose. Futhi lokhu - indlela enhle ukuvimbela isifo sikashukela.

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