An saki placental somatomammotropin (lactogen) a lokacin haihuwa kawai ta wurin mahaifa. A cikin matan da ba su da juna biyu da maza, babu wani layi na tsakiya a cikin al'ada. Wannan hormone peptide, wanda yake kama da tsari ga prolactin na glandon tsinkaya, amma yafi aiki. A karkashin rinjayarsa, maturation da shirye-shiryen mammary gland don samar da madara na faruwa. Kuma, kamar prolactin, yana da tasiri mai tasiri akan jikin jikin rawaya na ovaries. A ƙarƙashin rinjayar lactogen, ya haifar da kwayar cutar, wadda ta tabbatar da tabbatar da ciki har zuwa makonni 16.
A cikin sharuɗɗa daban-daban na ciki zubar da ƙwayar ta haifar da lakabi a cikin ƙananan yawa:
- fara farawa daga makonni 10;
- matsakaicin ya kai makonni 38;
- har zuwa makonni 40 yana raguwa saboda tsufa na ƙwayar.
Halin tebur ya ƙayyade yawan lactogen a lokacin ciki don wani lokaci.
Yaya aka yi wasan kwaikwayo na tsakiya?
Don binciken da aka yi a kan lactogen, an dauki jini a safiya, a cikin wani abu mai ciki, daga jikin mace mai ciki, tun da kashi 90 cikin dari na yawanta ya shiga cikin matar ta kuma kawai kashi 10 cikin dari ne ke cikin ruwan tayi. Sha'idodin bincike:
- ganewar asali na mahaifa a lokacin daukar ciki (tare da freeradioradio);
- ganewar asali da magungunan magungunan ƙwaƙwalwa da ƙwaƙwalwar ƙwaƙwalwar ƙwayoyi (ƙananan ƙananan ƙwayar ƙwayar ƙwayar cuta a manyan ƙananan gonadotropin chorionic).
Yayin da mutuwar tayi, kwanciyar sanyi, ciwon ciki ta tsakiya, jinkirta ciki, tayin ciwon ciwon tayi, tashin ciki gestosis, raguwa a matakin lactin placental za a kiyaye. Kuma haɓaka zai yiwu idan akwai mahaifiyar ciki , ciwon sukari (tare da ƙananan haifa), Rh-rikice-rikice na mahaifi da tayin, fetus macrosomia, ciwon sukari.