Umsebenzi we-Luteinizing Hormone ekuzaleni
I-hormone ye-luteinizing, evame ukufushaniswa ngokuthi i-LH, iyi-hormone edlala indima ebalulekile ohlelweni lokuzala lomuntu, kokubili kwabesilisa nabesifazane. Le hormone ikhiqizwa yi-pituitary gland, etholakala phansi kobuchopho, futhi inemisebenzi ehlukene kuye ngobulili. Lesi sihloko sizohlola ngokugcwele umsebenzi wokuzala we-hormone ye-luteinizing, okuhlanganisa izindlela zayo, izindima ezinhlelweni zokuzala zabesilisa nabesifazane, kanye nobudlelwano bayo nempilo nokuzala.
Indlela kanye Nokukhiqizwa Kwe-Luteinizing Hormone
Empeleni, ukukhiqizwa kwe-LH kulawulwa indlela yokuphendula yamahomoni ehilela i-pituitary gland kanye ne-hypothalamus. I-hypothalamus ikhipha i-gonadotropin-releasing hormone (GnRH), evuselela i-pituitary gland ukuthi ikhiqize futhi ikhulule i-LH kanye ne-follicle-stimulating hormone (FSH). Le nqubo ilawulwa njalo amazinga egazi amahomoni ocansi njenge-estrogen ne-testosterone.
Kwabesifazane, umjikelezo wokuya esikhathini udala iphethini yokujikeleza kokukhiqizwa kwe-LH. Amazinga e-LH anda kakhulu ngaphambi kokukhishwa kweqanda, okufinyelela esicongweni kulokho okwaziwa ngokuthi "ukwanda kwe-LH." Kwabesilisa, amazinga e-LH azinzile futhi ahlala njalo, ikakhulukazi akhuthaza ukukhiqizwa kwe-testosterone.
Umsebenzi we-Luteinizing Hormone ekuzalweni kwabesifazane
Umjikelezo Wokuya Esikhathini Nokuvuthwa
Omunye wemisebenzi eyinhloko ye-LH kwabesifazane yindima yayo emjikelezweni wokuya esikhathini. Umjikelezo wokuya esikhathini uvame ukuhlukaniswa ngezigaba ezintathu eziyinhloko: isigaba se-follicular, i-ovulation, kanye nesigaba se-luteal.
1. Isigaba Se-Follicular: Ekuqaleni komjikelezo wokuya esikhathini, amazinga e-LH aphansi kakhulu. I-FSH ikhuthaza ukukhula nokuvuthwa kwama-follicle kuma-ovari, aqukethe amaqanda. La ma-follicle akhulayo akhiqiza i-estrogen, eqala ngokunciphisa ukukhiqizwa kwe-LH ngempendulo engemihle.
2. Ukuvuthwa: Lapho i-follicle ifinyelela ekuvuthweni, kuba nokwanda okukhulu kokukhiqizwa kwe-estrogen. Leli zinga eliphezulu le-estrogen lishintsha i-feedback loop ibe yi-positive, bese ivuselela i-pituitary gland ukuthi ikhiphe ukwanda kwe-LH (LH surge). Lokhu kukhula kubangela ukuthi i-follicle evuthiwe ikhiphe iqanda layo enqubweni eyaziwa ngokuthi i-ovulation.
3. Isigaba se-Luteal: Ngemva kokukhishwa kweqanda, izinsalela ze-follicle ephukile ziba yi-corpus luteum, ekhiqiza i-progesterone kanye nenani elincane le-estrogen. I-LH isekela umsebenzi obalulekile we-corpus luteum ekulungiseleleni ulwelwesi lwesibeletho (i-endometrium) ukuze kufakwe umbungu. Uma ukukhulelwa kungenzeki, i-corpus luteum iyawohloka, okubangela amazinga e-progesterone kanye ne-estrogen ehle, okuholela ekuyeni esikhathini.
Ukuzala Nokukhulelwa
I-LH idlala indima ebalulekile ekuzaleni kwabesifazane. Ngaphandle kokwanda kwe-LH, ukukhishwa kwamaqanda ngeke kwenzeke, kunciphisa amathuba okukhulelwa. Ngaphezu kwalokho, i-LH isekela i-corpus luteum, ebalulekile ekugcineni ukukhulelwa kusenesikhathi kuze kube yilapho i-placenta ithatha ukukhiqizwa kwe-hormone ye-progesterone edingekayo ukuyigcina.
Umsebenzi we-Luteinizing Hormone ekuzalweni kwabesilisa
Kwabesilisa, i-luteinizing hormone idlala indima ehluke kancane kodwa ebaluleke ngokulinganayo. Esimiso sokuzala sabesilisa, i-LH yaziwa kakhulu ngendima yayo ekulawuleni ukukhiqizwa kwe-testosterone ngamaseli e-Leydig emasendeni.
Ukukhiqizwa kwe-Testosterone
I-LH ivuselela amangqamuzana e-Leydig kuma-testes ukuze akhiqize futhi akhiphe i-testosterone, i-hormone yesilisa eyinhloko ebangela ukuthuthukiswa kwezimpawu zobulili eziyinhloko nezesibili. I-Testosterone ibalulekile ekukhiqizeni i-spermatogenesis, ukukhiqizwa kwesidoda kuma-testes.
I-Spermatogenesis
I-Testosterone, ekhiqizwa amaseli e-Leydig ngaphansi kwethonya le-LH, isekela i-spermatogenesis kuma-seminiferous tubules. I-Testosterone isebenza ngokubambisana ne-FSH ukukhuthaza ukukhiqizwa kwesidoda. Ngaphandle kwe-LH, ukukhiqizwa kwe-testosterone kuyancipha, okuthinta ngqo i-spermatogenesis futhi kunciphisa inani lesidoda kanye nekhwalithi yaso.
Indima Ekuthombeni
Ngesikhathi sokuthomba, ukwanda kwe-LH kuholela ekukhiqizweni kwe-testosterone okwandisiwe, okubangela ukuthuthukiswa kwezici zomzimba zabesilisa njengokukhula kwezinwele zomzimba, ukujula kwezwi, kanye nokwanda kwemisipha. Ngakho-ke, i-LH idlala indima ebalulekile ekuguqukeni kusukela ebuntwaneni kuya ebudaleni.
Ubudlelwano phakathi kwe-LH nezimo zezempilo kanye nokuzala
I-Hypogonadism
I-Hypogonadism yisimo lapho umzimba wehluleka ukukhiqiza inani elanele lama-hormone ocansi. Kwabesilisa, lokhu kungenzeka ngenxa yokukhiqizwa kwe-LH okungasebenzi kahle, okuholela emazingeni aphansi e-testosterone futhi kuthinte ukukhiqizwa kwe-spermatogenesis.
I-Polycystic Ovary Syndrome (PCOS)
Kwabesifazane, amazinga e-LH angalingani angaba uphawu lwe-polycystic ovary syndrome (PCOS), isimo esithinta ibhalansi yama-hormone okuzala futhi esingabangela i-anovulation (ukungabikho kwe-ovulation), ukungazali, kanye nokungahambi kahle kokuya esikhathini.
Ukungazali
Kuzo zombili izininsi, izinkinga ngokukhiqizwa noma ukusebenza kwe-LH zingaholela ekungazalini. Amazinga e-LH aphezulu noma aphansi ngendlela engavamile angabonisa ukuphazamiseka kwamahomoni okuthinta ikhono lokuzala. Ngakho-ke, ukuhlolwa kwezinga le-LH kuvame ukwenziwa njengengxenye yokuhlolwa kokungabi nanzalo.
Ukwelashwa ngama-hormone
Kwezinye izimo, ukwelashwa ngama-hormone kunganikezwa ukuze kuxazululwe izinkinga zokuzala ezihlobene namazinga e-LH. Isibonelo, imijovo ye-hCG (i-human chorionic gonadotropin), efana ne-LH, ingasetshenziswa ukukhuthaza ukuvuthwa kwamaqanda kwabesifazane noma ukwandisa ukukhiqizwa kwe-testosterone kwabesilisa.
Isiphetho
I-Luteinizing hormone (LH) idlala indima ebalulekile ekuzaleni kokubili kwabesilisa nabesifazane. Kwabesifazane, i-LH inesibopho sokubangela ukuvuthwa kweqanda nokusekela umsebenzi we-corpus luteum emjikelezweni wokuya esikhathini nokukhulelwa. Kwabesilisa, i-LH ivuselela ukukhiqizwa kwe-testosterone ngamaseli e-Leydig, okudingekayo ekukhiqizeni isidoda kanye nokukhula ngokocansi. Ukungalingani ekukhiqizweni noma ekusebenzeni kwe-LH kungaholela ezimweni ezahlukene zempilo kanye nezinkinga zokuzala. Ngakho-ke, ukuqonda kahle umsebenzi wale hormone kubalulekile ekuxilongweni nasekwelapheni izinkinga zokuzala.
Ukugcina ibhalansi yama-hormone e-LH emzimbeni kuyisihluthulelo sempilo yokuzala engcono kakhulu.
