Sethethefatsi se Khabane sa Anticancer, Yew Extract - Paclitaxel

Taxus chinensis

Taxus chinensis(Yew), mofuta oa lifate tsa khale tse siiloeng ka mor'a Quaternary glacier, li thathamisitsoe e le limela tse sa tloaelehang le tse kotsing ea ho timela le mefuta e leshome e kotsing ea ho fela lefatšeng. "plant giant panda".
Kahoo,
Joalo ka "mesaletsa e phelang ea limela", litlamorao le ts'ebeliso ea li-yew extract ke life?
Yew, ke semela sa Taxus sa Taxaceae. Ho na le mefuta e 11 ea yew lefatšeng, e ajoang libakeng tse futhumetseng ho ea libakeng tse chesang tse mongobo karolong e ka leboea ea hemisphere. Ho na le mefuta e 4 le mofuta o le mong Chaena, e leng, yew ea China, yew leboea-bochabela, Yunnan yew. Paclitaxel e ntšitsoeng lekhapetleng le makhasi a yew e na le phello e babatsehang ea ho phekola mefuta e fapaneng ea kankere e tsoetseng pele 'me e tsejoa e le "mohala oa ho qetela oa ts'ireletso bakeng sa lefu lena." phekolo ea kankere ”.
Nalane ea nts'etsopele ea paclitaxel:
Ka 1963, litsebi tsa k'hemistri tsa Amerika MCWani le monre E.wall ba ile ba qala ka ho arola lekhapetla le tala la paclitaxel lekhapetleng le lehong la Pacific yew, le melang merung e ka bophirima ho United States. hore qola e tala ea paclitaxel e ne e na le ts'ebetso e phahameng ho lisele tsa hlahala tsa toeba ka har'a vitro, 'me a qala ho arola karolo ena e sebetsang.Ka lebaka la litaba tse tlase haholo tsa motsoako o sebetsang limela, ho fihlela 1971 ba sebelisana le Andre t.McPhail. , moprofesa oa k'hemistri Univesithing ea Duke ho fumana sebopeho sa lik'hemik'hale tsa motsoako o sebetsang-e leng motsoako oa tetracyclic diterpene, 'me ae reha taxol.
Paclitaxel ke eng?
Paclitaxel ke monomer diterpenoid e ntšitsoeng lekhapetleng la Natural Plant Taxus.Ke metabolite ea bobeli e rarahaneng, hape ke eona feela sethethefatsi se tsejoang ho khothaletsa polymerization ea microtubule le ho tsitsisa li-microtubules tse nang le polymerized. U se ke ua itšoara ka li-tubulin dimers tse se nang polymerized. Ka mor'a hore li kopane le paclitaxel, lisele li tla bokella palo e kholo ea li-microtubules liseleng.
Tšebeliso ea paclitaxel:
1. Anticancer
Paclitaxel ke moriana oa pele oa mofets'e oa mofets'e oa mahe le mofets'e o tsoetseng pele oa mofets'e. Tsamaiso ea Naha ea Kankere e ile ea qala liteko tsa batho ho tloha ka 1983 ho lekola chefo ea eona le ts'ebetso ea eona ea anticancer.
Paclitaxel e sebelisoa haholo mofetšeng oa mahe a bomme le mofetše oa matsoele ka boithuto ba bongaka ba bobeli le ba boraro. E boetse e na le phello e itseng ho mofetše oa matšoafo, mofetše oa colorectal, melanoma, mofetše oa hlooho le molala, lymphoma le hlahala ea boko.
2. Antitumor
Paclitaxel ke khetho ea pele ea lithethefatsi tse thibelang hlahala lipetlele lefatšeng ka bophara.E ka khothalletsa kopano ea li-microtubules ka ho khothalletsa polymerization ea li-subunits tsa spindle tubulin.Ke lithethefatsi tse khahlanong le microtubule antitumor.
3.Pheko ea ramatiki ea ramatiki
Boithuto bo bonts'itse hore taxol e amohetsoe ke FDA bakeng sa ramatiki ea lefu la masapo, 'me gel ea paclitaxel ke tokiso ea sehlooho bakeng sa paclitaxel ho ramatiki ea ramatiki.


Nako ea poso: Apr-21-2022