Hauv kev sib ntaus sib tua tsis tu ncua tawm tsam cov kab mob, kev tshawb fawb kho mob tau rov txhais cov ntsiab lus kho mob los ntawm kev siv qhov tseeb ntawm cov phiaj xwm kho mob. Ntawm cov kev nce qib no, palbociclib sawv tawm raws li kev xaiv inhibitor uas cuam tshuam ncaj qha rau hauv lub voj voog ntawm tes, txwv tsis pub muaj kev loj hlob ntawm cov qog nqaij hlav cancer thaum tiv thaiv cov hlwb noj qab haus huv. Los ntawm tshwj xeeb inhibiting CDK4 thiab CDK6, cov tshuaj no tuaj yeem ua rau cov kab mob qeeb qeeb, tshwj xeeb tshaj yog nyob rau hauv cov tshuaj hormones receptor-zoo, HER2-negative advanced lesion cells. Kab lus no yuav piav qhia txog cov txheej txheem ntawm kev nqis tes ua, kev siv tshuaj kho mob, thiab cov kev xav txog ntawm palbociclib, muab kev nkag siab zoo dua ntawm nws lub luag haujlwm hauv kev kho mob niaj hnub rau cov kab mob.
Palbociclib yog dab tsi
Palbociclib hmoovyog siv ua ke nrog lwm yam tshuaj. Cov tshuaj no yog ib hom tshuaj hu ua cyclin-dependent kinase (CDK) inhibitors, tshwj xeeb yog inhibiting CDK4 thiab CDK6 enzymes uas tswj lub voj voog ntawm tes. Inhibiting cov enzymes tuaj yeem pab qeeb lossis nres kev loj hlob ntawm cov kab mob hauv lub cev. Feem ntau, nws yog siv ua ke nrog lwm cov tshuaj, xws li kev kho tshuaj hormones xws li aromatase inhibitors, los kho cov tshuaj hormone receptor-zoo (HR+), human epidermal growth factor receptor 2-negative (HER2-) advanced or metastatic mis cancer. Nws feem ntau yog siv rau cov poj niam postmenopausal thiab, qee zaum, hauv cov txiv neej uas tau txais kev kho tshuaj hormone. Yog tias koj tseem xav tau cov khoom xyaw palbociclib, thov hu rau Xi'an Sonwu.
Yuav ua li cas yog lub mechanism ntawm kev txiav txim ntawm palbociclib
Palbociclib ua haujlwm los ntawm inhibiting qee cov proteins koom nrog hauv lub voj voog ntawm tes, yog li qeeb lossis nres kev loj hlob ntawm cov kab mob. Nov yog cov lus piav qhia ntxaws txog nws txoj kev ua haujlwm:
Mechanism ntawm Action:
1. Cyclin-Dependent Kinase (CDK) Inhibition:
Cov tshuaj no tshwj xeeb yog tsom rau CDK4 thiab CDK6 (cyclin-dependent kinases), enzymes uas tswj lub voj voog ntawm tes. Lub voj voog ntawm tes yog cov txheej txheem ntawm kev faib cell thiab kev loj hlob.
2. Blocking Cell Cycle Progression:
Hauv kev faib cell ib txwm, CDK4 / 6 complex txhawb kev hloov pauv ntawm cov hlwb los ntawm G1 theem (qib so) mus rau theem S (qhov twg DNA rov pib dua). Los ntawm inhibiting CDK4 thiab CDK6, Palbociclib thaiv cov hlwb los ntawm kev nkag mus rau theem S los ntawm theem G1, tiv thaiv cov kab mob los ntawm kev loj hlob thiab faib mus ntxiv.
3. Kev Xaiv Ua Haujlwm ntawm Cov Kab Mob Kab Mob:
Qhov kev txiav txim no tshwj xeeb tshaj yog rau cov kab mob hauv lub cev uas tso siab rau txoj hauv kev no kom tsis txhob muaj kev loj hlob. Los ntawm kev thaiv CDK4/6, cov khoom no txwv tsis pub kis tus kab mob hauv lub cev thaum tso cai rau cov hlwb ua haujlwm txuas ntxiv.
Kev siv kho mob:
Txo kev loj hlob ntawm neoplasm:
Inhibiting lub voj voog ntawm tes pab txo qis neoplasm loj thiab txwv tsis pub kis neoplasm. Los ntawm kev tiv thaiv kev faib tawm ntawm tes, nws muaj txiaj ntsig zoo inhibits kev loj hlob ntawm cov kab mob, ua rau qeeb ntawm kev loj hlob ntawm cov tshuaj hormone receptor-zoo, HER2-negative cancer mis, tsis hais qhov chaw ntawm cov qog.
Palbociclib thiab letrozole tuaj yeem noj tib lub sijhawm
Yog lawm, Palbociclib thiab Letrozole yog ob hom tshuaj siv ntau heev thiab feem ntau tuaj yeem noj ua ke. Qhov tseeb, US Food and Drug Administration (FDA) tau pom zoo ua ke ntawm ob cov tshuaj no rau kev kho mob ntawm qee yam mob qog nqaij hlav lossis mob qog nqaij hlav. Cov tsos mob ntawm cov qe ntshav dawb txawv txav hauv cov poj niam postmenopausal (thiab txiv neej).
Cov kev tshawb fawb tau pom tias kev sib xyaw ob cov tshuaj no muaj txiaj ntsig zoo dua li Letrozole ib leeg rau kev ncua kev kis kab mob.
Lawv cov sijhawm noj tshuaj sib txawv hauv 28-hnub voj voog:
Palbociclib feem ntau yog noj ib zaug ib hnub rau 21 hnub, ua raws li 7 hnub so.
Letrozole feem ntau yog noj ib zaug ib hnub rau 28 hnub sib law liag.
Koj tuaj yeem noj ob qho tshuaj tib lub sijhawm txhua hnub.
Yog tias koj noj tshuaj muaj Palbociclib, nws yuav tsum tau noj nrog zaub mov. Letrozole tuaj yeem noj nrog lossis tsis muaj zaub mov.
Cov teebmeem tshwm sim
Vim tias cov tshuaj no ua haujlwm los ntawm cov txheej txheem sib txawv, lawv txhua tus tsim cov kev mob tshwm sim tshwj xeeb. Thaum noj ua ke, cov kev mob tshwm sim feem ntau muaj xws li: txo qis hauv cov ntshav dawb suav (tseem hu ua neutropenia), uas muaj ntau heev, yog li koj tus kws kho mob yuav saib xyuas koj cov ntshav cov ntshav. Tsis tas li ntawd, koj tuaj yeem ua rau qaug zog lossis tsis muaj zog. Cov teeb meem digestive xws li xeev siab thiab raws plab yuav tshwm sim, tab sis cov no feem ntau tswj tau.
Kev mob pob qij txha kuj yog ib qho kev mob tshwm sim ntawm Letrozole. Qee cov neeg mob kuj tuaj yeem ua rau cov plaub hau poob qis lossis thinning.
Kev txiav txim siab tseem ceeb: Koj pab neeg saib xyuas kev noj qab haus huv yuav tsum tau kuaj ntshav tsis tu ncua (tshwj xeeb tshaj yog thaum thawj ob peb lub voj voog) txhawm rau kuaj xyuas koj cov ntshav dawb.
Qhov thib ob, zam cov txiv kab ntxwv thiab txiv kab ntxwv qaub thaum noj cov tshuaj uas muaj Palbociclib, vim lawv tuaj yeem cuam tshuam koj lub cev metabolizes cov tshuaj li cas. Tsis tas li, vim tias cov tshuaj no tuaj yeem txo koj cov qe ntshav dawb, qhia rau koj tus kws kho mob tam sim yog tias koj ua npaws lossis pom muaj kab mob.
Yog tias koj xav nug txog tus nqi ntawm palbociclib hmoov lossis lwm yam ntaub ntawv khoom, thov hu rau Xi'an Sonwu ncaj qha.
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Tau qhov twg los: https://medlineplus.gov/druginfo/meds/a615013.html