Zaka zanu pa nthawi yoyamba kutenga mimba zingachepetse chiopsezo cha khansa ya m'mawere. Mwinamwake mwamva izi, koma ndi zaka zingati zomwe tikukamba, ndipo n'chifukwa chiyani izi zili zoona?
Ubwino wambiri wokhala ndi mwana ndi wosawoneka, wamalingaliro, komanso umoyo. Koma pano pali umboni wina wakuti kutenga mimba kumakupatsani mphatso ya thanzi-m'mphepete motsutsana ndi khansa ya m'mawere.
Mimba ndi Kuyamwitsa Lower Exrogen Exposure
Mimba asanakwane zaka 30 ndi kuyamwitsa kumachepetsera chiwerengero cha moyo wa nthawi ya msinkhu, womwe umaganiza kuti ndi chifukwa chimodzi chomwe amathandizira kuchepetsa chiopsezo chanu. Mahomoni otchedwa estrogen amatsanulira 80 peresenti ya khansa ya m'mawere. Popeza kuti mimba ndi lactation zimachepetsa msinkhu wanu wa estrogen, chiopsezo chanu chimachepa nthawi iliyonse pamene muli ndi pakati komanso pamene mukuyamwitsa mwana wanu, mpaka kufika pang'onopang'ono.
Kodi Zochitika Zakale Pa Kumimba N'kofunika?
Malingana ndi National Cancer Institute, kukhala ndi mimba nthawi zonse kapena zaka 20 zisanafike kumateteza chitetezo cha khansa ya m'mawere. Izi zingachepetse chiopsezo chanu cha khansa ya m'mawere poyerekeza ndi amayi omwe ali ndi mwana ali ndi zaka 35 kapena kuposa kapena alibe ana. Kuyamwitsa kumateteza mawere a estrogen, kotero kuti mulibe mimba ya estrogen mpaka mwana wanu atayamisani kuyamwa.
Kukhala ndi mimba yoyamba ali ndi zaka 30 kapena kuposera kumapereka chitetezo chochepa pa khansa ya m'mawere.
Alpha-fetoprotein, mapuloteni opangidwa ndi mwana wamwamuna pa nthawi yomwe ali ndi mimba, imathandizira kuyang'anira kukula kwa fetus. Zingathandizenso kuchepetsa maselo a khansa ya m'mawere. Pa zaka zoposa 30, alpha-fetoprotein imagwira ntchito mosiyana, ndipo ingathandize kuthandizira m'malo moletsa khansara ya m'mawere.
Mmene Mimba Imathandizira Kuteteza Khansa ya M'mawere
Mawere akukula pakatha msinkhu, pamene mahomoni akusintha mofulumira komanso kufikisa thupi lonse likuchitika.
Maselo a m'mawere amatha kukhala okhwima pambuyo pa mimba yonse. Mawere anu ali aang'ono kuyambira pa nthawi yoyamba yamwezi kupita kumimba yanu yoyamba. Wofufuza Irma Russo, MD wa Fox Chase Cancer Center ku Philadelphia amakhulupirira kuti kuchepetsa nthawi yomwe maselo a m'mawere amakhala atangoyamba kumene kumapereka chitetezo chabwino cha kusintha kwa khansa. Mahomoni opangidwa panthawi ya mimba, chorionic gonadotropin (hCG), amachititsa kuti maselo a m'mawere akhwime ndi kuteteza kukula kwa khansa yotsatira. Hamu yotenga mimba hCG imayambitsa kusintha kosatha kwa majini mumatenda anu a mammary, ndipo kusintha kwa majini kungathandize kupewa khansa ya m'mawere.
Pakati pa mimba, maselo a fetus amapangidwa, ndipo maselowo amakhalabe mumtunda wanu kwa nthawi yayitali mutatenga mimba. Kukhoza kwa maselo osatha awa akuyandama m'magazi anu amatchedwa fetal microchimerism (FMc). Kafukufuku wochitidwa ndi Dr. Vijayakrishna K. Gadi ya Fred Hutchinson Research Center ku Seattle imasonyeza kuti maselo a fetal angathandize kuchepetsa chiopsezo cha khansa ya m'mawere. Fetal microchimerism ingachititse chitetezo chanu kuti chitetezo chanu cha mthupi chitetezeke kuti maselo oopsa (khansa) athe kuwonongeka.
"Tadziwa nthawi kuti mimba ikhoza kuteteza khansa ya m'mawere," adatero Gadi, "koma zotsatira zathu zimathandiza kuthetsa vutoli chifukwa chake sikuti amayi onse amatetezedwa." Koma ochita kafukufuku ali ndi chiyembekezo chodzagwiritsa ntchito zotsatira zamtsogolo. "Potsata maphunziro ena," adawonjezera Gadi, "tingathe kupanga maselo a fetal monga mawonekedwe a chithandizo cha m'mawere kapena mitundu ina ya khansa."
Mimba Sizitsimikiziranso Chitetezo
Komabe, mimba sungakhoze kuteteza kwathunthu ku khansa ya m'mawere. N'zotheka kupezeka ndi khansa ya m'mawere panthawi yomwe mayiyo ali ndi mimba komanso kuti azitha kuchizidwa ndi chemotherapy.
Kupezeka kwa khansa ya m'mawere pamene ali ndi mimba sikokwanira: mmodzi yekha mwa 3,000 (0.03%) mmodzi mwa khumi (0.01%) amayi apakati akupezeka ndi khansa ya m'mawere. Pali kuwonjezeka kwakukulu kwa khansa ya m'mawere kwa chaka choyamba mutatha kutenga mimba, kenako kenako imatsika pansi pa mitengo ya anthu omwe sanaberekepo ndipo sanabereke.
Mimba ndi Mimba pambuyo pa khansa ya m'mawere
Ngati mwapezeka ndi khansa ya m'mawere, chemotherapy ndi mankhwala otsatira monga estrogen suppressors ndi aromatase inhibitors zingayambitse mazira anu kuti asiye kugwira ntchito kwa kanthawi. Panthawiyi, mukhoza kukhala opanda panthawi yochepa, koma ngati simunayambe kumwa mankhwala pambuyo pake, chonde chanu chikhoza kubwerera miyezi 6 mpaka 12 mutatha mankhwala a chemotherapy. Muli ndi mwayi wosankha mazira kapena mazira asanayambe kumwa mankhwala, omwe ndi ofunikira ngati palibe chitsimikizo chokhudza kubereka kwa m'tsogolo. Nyuzipepala ya American Cancer Society inati, "Ngakhale kuti pangakhale nkhaŵa kuti mimba ingayambitse khansara, maphunziro mpaka lero sasonyeza kuti ndi zoona kwa mtundu uliwonse wa khansa." Ambiri opulumutsidwa ndi khansa ya m'mawere omwe akufuna kukhala ndi ana atatha kuchipatala akudandaula za kusintha kwa mahomoni a mimba kumabweretsa kubwereza, koma maphunziro sanawonetsere kusiyana kwa kubwereranso kapena popanda kutenga pakati.
Zotsatira:
Baron, M., Santucci-Pereira, J., ndi J. Russo. Njira zamagulu zomwe zimaphatikizapo kutenga mimba-zimapangitsa kupewa kupewa khansa ya m'mawere. Malire a ku Endocrinology . 2014. 5: 213.
Gadi, V., ndi J. Nelson. Fetal microchimerism kwa amayi omwe ali ndi khansa ya m'mawere. Kafukufuku wa Khansa . 2007. 67 (19): 9035-8.
Gadi, V. Fetal microchimerism m'mimba mwa amayi omwe alibe khansa ya m'mawere. Kansalu ya kansa ya kafukufuku ndi chithandizo cha mankhwala 2010. 121 (1): 241-4.
National Cancer Institute. Matenda a khansa ya m'mawere (PDQ). Kusinthidwa 10/22/15.
Russo, I. Fox Chase Cancer Center. Mbiri Yopanga. Matenda a mafinya m'matumbo omwe amayamba chifukwa cha mimba imathandiza kupewa khansa ya m'mawere. Lofalitsidwa: 04 / 20/2005.