Prolactin yog ib yam tshuaj uas tuaj yeem koom rau hauv cov txheej txheem ntawm ovulation, thiab stimulates tso cov kua mis (lactation) rau lub sijhawm tom qab yug menyuam. Tib lub sij hawm, prolactin inhibits lub zus muag ntawm follicle-stimulating hormone thaum lub caij cev xeeb tub. Cov kev hloov nyob rau theem ntawm prolactin ua rau lub fact tias lub follicle tsis tsim, thiab raws li ib tug tshwm sim - ovulation yog tsis tuaj kawm ntawv. Nws yog nws tsis tuaj yeem yog tias nws tuaj yeem yog ib yam kabmob ntawm cov neeg tsis muaj zog hauv cov pojniam, uas yog vim li cas tus poj niam tsis tuaj yeem cev xeeb tub.
Dab tsi yog qhov concentration ntawm prolactin rau cov poj niam hloov?
Thaum nruab hnub, qhov hormone prolactin yog tso rau hauv tus poj niam cov ntshav tsis ncaj. Yog li ntawd, nyob rau hauv cov tshuaj, nws yog hais tias lub synthesis ntawm no hormone yog ntawm ib tug pulsating xwm. Yog li, thaum lub sij hawm so ntawm lub cev - pw tsaug zog, nws concentration nyob rau hauv lub cev nce. Nrog awakening, nws ntog sharply thiab nce mus txog ib qho tsawg kawg nkaus thaum sawv ntxov. Tom qab nruab nrab, qhov concentration ntawm prolactin nce.
Tsis tas li ntawd, theem ntawm cov tshuaj hormone no ncaj qha nyob ntawm seb ib theem ntawm lub cev ntas. Piv txwv li, nyob rau theem lutein, theem ntawm cov tshuaj hauv cov ntshav yog siab dua nyob hauv qib follicular. Ironically, no hormone yog muaj nyob hauv cov ntshav ntawm cov txiv neej. Nws yog lub luag haujlwm ob leeg rau txoj kev kawm, thiab rau txoj kev loj hlob ntawm spermatozoa, thiab tseem tuaj yeem pab tsim tawm ntawm testosterone los ntawm lub cev.
Reduced prolactin
Raws li twb tau hais los saum no, qhov concentration ntawm prolactin nyob rau hauv lub cev tsis yog nyob ntawm txhua theem thiab nyob ntawm ntau yam. Yog li, thaum tsis muaj kev ntxhov siab nyob rau hauv ib tug poj niam, theem ntawm no hormone yog dab tsi. Qhov tsawg theem ntawm prolactin nyob rau hauv cov poj niam hais txog kev kuaj pom nyob rau hauv lub cev ntawm ib hom qee yam kab mob, thiab kuj tuaj yeem cuam tshuam rau kev npaj plab me nyuam.
Feem ntau cov qib qis ntawm cov pob txha nyob rau hauv cov poj niam tuaj yeem qhia tau hais tias muaj cov kev mob xws li Shimakh's syndrome. Tus kab mob no yog tshwm sim los ntawm pituitary insufficiency, uas feem ntau pom thaum lub sij hawm los ntshav thaum yug tus me nyuam . Tsis tas li ntawd, cov ntsiab lus ntawm prolactin tsawg hauv cov poj niam cov ntshav yuav yog ib qho kev qhia ntawm apoplexy ntawm lub ntsws pituitary.
Ib qib qis ntawm prolactin thaum lub sij hawm ntev ntawm cev xeeb tub ua raws li qhov ntsuas thiab ib zaug dua yuav paub meej tias nws cov pererachivaemost.
Qhov tsis zoo ntawm prolactin yuav yog qhov txiaj ntsig ntawm kev siv cov tshuaj, piv txwv, cov tshuaj tua kab mob, cov tshuaj loog, thiab cov kab mob morphine.