Yikuphi Ngempela Imikhulu Yamahhala Futhi Kungani Kubalulekile?
Ama-radicals amahhala ayenama-molecule asebenzayo futhi angakhawuleki akhiqizwa emzimbeni ngokwemvelo njengendlela yokwenza umzimba (i-oxidation), noma ngokuvezwa kwezinto ezinobuthi emvelweni ezifana nomusi wokubhema nokukhanya kwe-ultraviolet. Ama-radicals wamahhala anempilo yokuphila kwengxenye eyodwa kuphela yesibili.
Ukwakhiwa kwama-Free Radicals
Ama-radicals wamahhala aqukethe i-electron engasebenzi.
Ngenxa yokwehluleka kwenani elizinzile lamakhetheni egobolondo langaphandle, basesimweni sokucinga okuqhubekayo ukubopha enye i-electron ukuze bazinzile - inqubo engabangela ukulimala ku- DNA nezinye izingxenye zamangqamuzana omuntu. Lo monakalo ungadlala indima ekuthuthukisweni komdlavuza nezinye izifo futhi kuphuthumise inqubo yokuguga.
Yini Ebangelwa Ama-Free Radicals?
Ama-radicals wamahhala angahle akhiqizwe ngezindlela ezimbalwa ezahlukene. Zingase zakhiwe ezinkambisweni ezivamile zomzimba emzimbeni, noma ngokuvezwa kwezidumbu (izinto ezibangelwa umdlavuza) emvelweni .
Umzimba wethu uvame ukhiqiza ama-radicals mahhala ekwenzeni ukwehlisa izakhi ukuze kutholakale amandla avumela imizimba yethu ukuba isebenze. Ukukhiqizwa kwama-radicals mahhala ezinkambisweni ezivamile zemithi ezifana nalokhu kungenye yezizathu zokuthi ingozi yomdlavuza yanda ngokukhula, ngisho nalapho abantu benokungabonakali okuncane kwezidakamizwa ezibangelwa umdlavuza.
Ukuvezwa kwama-carcinogens endaweni yethu kungenza futhi ama-radicals mahhala.
Izibonelo zamanye ama-carcinogens zifaka:
- Ugwayi ugwayi
- Imisebe ye-Ultraviolet
- I-Radon
- Amakhemikhali emvelo nokusebenza
Umphumela wama-Free Radicals Emzimbeni
Uma ama-radicals ekhululekile akhiqizwa, kungakhathaliseki ukuthi ukuvezwa noma ukwenza izinqubo ezijwayelekile zomzimba umzimba, bakhululekile ukwenza umonakalo. Ukutholakala kwama-radicals mahhala kudala lokho okuyaziwa ngokuthi ukucindezeleka kwe-oxidative emzimbeni.
Isizathu esibizwa ngokuthi ukucindezeleka nge-oxyidative ukuthi ukuphendula okwenzekayo okuholela ekutheni ama-radicals mahhala athole i-electron kwenziwa phambi kwe-oxygen.
Ukulimala kwamaprotheni (amaprotheni okuxhuma ukuxhumana nokuningi) nezinye izingxenye zomzimba kungabangela izifo ngokuqondile. Ukulimala okwenziwe amagciwane ku-DNA kungabangela izakhi zofuzo ezikhiqiza amaprotheni angasebenzi - amaprotheni adingeka ukuba abe abalindi phezu kwamaseli omzimba. Ezinye zalezi zinguquko zingase zibandakanye izakhi zofuzo ezibizwa ngokuthi i- tumor suppressor geni .Izakhi zofuzo zama-protein ezisebenza ukulungisa umonakalo ku-DNA noma ukubangela ukuba amangqamuzana abonakaliswe ngaphesheya kwe-salvage asuswe ngenqubo ye-apoptosis (ukufa kwe-cellmed programm.) Umphumela amangqamuzana avunyelwe ukwehlukanisa futhi abe yisisu - ukwakheka komdlavuza weselula .
Ama-antioxidants nama-Radicals wamahhala
Kucatshangwa ukuthi ama-antioxidants, njenge-vitamin C, i-vitamin E, ne-beta-carotene, anganciphisa umonakalo obangelwa ama-radicals mahhala emizimbeni yethu ngokuvimbela ukubunjwa kwawo.
Ngenkathi imithombo yokudla yama-antioxidants ihlotshaniswa nengozi ephansi yokuthuthukisa umdlavuza wamaphaphu , kubalulekile ukuqaphela ukuthi ukuthatha izithako zezinye zalezi (ezifana ne-beta-carotene ne- vitamin E ) empeleni zingandisa ingozi.
Kulabo ababhekana nokwelashwa komdlavuza, kubaluleke kakhulu ukuxoxa nganoma yimaphi ama-supplement antioxidant - noma yiziphi ezinye izithako, ngaleyo ndaba - nge-oncologist yakho. Ezinye zokwelapha umdlavuza, ezifana nemisebe, zakha ama-radicals mahhala ngomzamo wokubulala amangqamuzana omdlavuza. Kulesi silungiselelo, ukusetshenziswa kwama- antioxidants kungase kunciphise ukusebenza kahle kokwelashwa.
Ama-Radicals namaKhansela wamahhala
I-Cancer ivame ukubangelwa uchungechunge lwezinguquko eziholela ekukhuleni okungalawulwayo nokungafi okuhlobene kweseli. Njengoba izithelo nemifino ekudleni kwethu kuphezulu kuma-antioxidants, kucatshangwa ukuthi lokhu kungaba yisinye sezizathu zokuthi ukudla okucebile izithelo nemifino sekulokhu kuhlotshaniswa nobungozi obuphansi bomdlavuza.
Njengoba kuphawuliwe ekuqaleni, noma kunjalo, ukuthola lezi zinhlobo zokuvimbela ama-antioxidants kufomu lokufaka isicelo akutholakalanga ukuthi zisebenza kahle, futhi incologists eziningi zincoma imithombo yokudla yalezi zondlo. Ngaphezu kwalokho, amanye amavithamini namaminerali angenelela angaphazamisa ukwelashwa komdlavuza .
Ama-Radical Free and Aging
Kukhona imibono eminingana echaza ukuthi kungani imizimba yethu yobudala kanye nama-radicals mahhala kufakwe kwenye yalezo zinkombinkimbi. Esikhundleni sokukhulula ama-radicals kuphela, noma kunjalo, kungenzeka ukuthi iminyaka evamile ihlobene nezinqubo eziningi ezihlukahlukene emzimbeni.
Yini Ongayenza?
Ukwazi ukuthi umdlavuza ungakhula kanjani, abantu ngabanye bangabheka izindlela zabo empilweni yabo kokubili ukunciphisa ama-radicals mahhala akhiqizwa emzimbeni, kanye nokwandisa ama-antioxidants atholakalayo ukuze abhekane nama-radicals yamahhala akhiqizwa ngisho nangokwe-metabolism evamile. Hlola lezi zinguquko eziyishumi eziyisishiyagalombili zokuphila okulula ongaqala ngazo namuhla ukunciphisa ingozi yakho yokuba nomdlavuza .
Imithombo:
Lobo, V., Patil, A., Phatak, A., noN. Chandra. Ama-Radicals amahhala, ama-Antioxidants kanye nokudla okusebenzayo: Impumelelo kumpilo yabantu. Ukubuyekezwa kwe-Pharmacognosy.