Ntlafatsa Bophelo ba Hao le Esita le Eketsa Lifespan
Bohle rea tseba hore boikoetliso bo molemo ho rona, empa na u ne u tseba hore ho ka etsa hore u be molemong oa lilemo tse robong? Ho thahasellisang le ho feta, bafuputsi ba qala ho utloisisa hantle hore na ho ikoetlisa ho u boloka u le mocha joang.
Bothata ba pele, ha e le hantle, bo tseba ho hlalosa "ho lula mocha" kapa "ho tsofala ka katleho." Tsela e 'ngoe ke ho lekanya botsofali ka DNA ea hau ...
ka ho toba. Lintlheng tsa li-chromosome tsa hau ke li-telomere tsa hau, tse sebetsang e le li-caps tse sireletsang liphatsa tsa lefutso tse pakeng tsa tsona.
Li-telomere tsa hau li tsebahala ho khutsufatsa ha u ntse u le lilemong. Ha e le hantle, li-telomere ke tse ling tsa lintlha tsa bohlokoa ka ho fetisisa botsofaling. Li-telomere tsa bacha li na le li-nucleotide tse ka bang 8 000 le 10000 nako e telele (li-nucleotides ke li-chromosome tsa hau), empa batho ba baholo ba ka 'na ba ba le ba seng bakae ba nucleotide tse 5 000 tse etsang li-telomere tsa bona.
Phuputsong ena ea 2008 ho bonts'a boikoetliso ho ka etsa hore u be monyenyane ka lilemo tse robong, bafuputsi ba bapisa bolelele ba li-telomeres le mekhoa ea boikoetliso ka mafahla a tšoanang.
Etsa DNA ea Hao e Monyenyane
Lihlopha tse fetang 1 200 tsa mafahla (boholo ba basali) ba ngolisitseng lenaneong la lipatlisiso. Bafuputsi ba shebile phello ea boikoetliso ka bolelele ba telemeres ka lisele tse tšoeu tsa mali tsa mafahla.
Phuputso eo e ile ea fumana li-telomere tse telele li amahanngoa le boithabiso bo bongata ba boithabiso.
Tlhaloso ena e ile ea tšoareloa ka mor'a hore bafuputsi ba fetole lilemo tsa bona, thobalano, boima ba 'mele, ho tsuba, boemo ba maemo a sechaba, le ho ikoetlisa mosebetsing.
Li-telomere tsa lihlooho tse sebetsang ka ho fetisisa li ne li le nucleotides tse 200 ho feta tse ling tsa litaba tse seng kae tse sebetsang. Ka mafahla a mang a tšoanang le a neng a sa sebelise chelete e lekanang (mafahla a le mong a sebetsa hangata ho feta a mang), li-telomere mafahla a mahlahahlaha a mangata a ne a le lilemo tse ka bang 88 ho feta tse ling tsa baralib'abo bona ba seng ba sa sebetse (empa ka tsela e fapaneng) .
Ho ikhethela hore na boikoetliso bo ka etsa hore DNA ea hao e be e nyenyane le e phetseng hantle e emela mohato o mocha o moholo ho utloisisa hore na mokhoa oa ho phela o phetha karolo efe botsofaling.
Ke ho ikoetlisa hofe ho loketseng DNA?
Ho sebetsa mofufutso ho bonahala ho le bohlokoa. Thutong ea mafahla, batho ba neng ba ikoetlisa ka matla lihora tse tharo beke le beke ba ne ba e-na le li-telomere tse telele 'me ba le lilemo li robong "ba le monyenyane" (e lekanngoa ke li-telomere tsa bona) ho feta litapole tsa bethe tse sa kang tsa ikoetlisa. Sena se ile sa nka 'nete ka mor'a hore ho be le likarolo tse ling tse kang ho tsuba, lilemo, boima le boemong ba mosebetsi mosebetsing.
Leha ho le joalo, ho na le maikutlo a lipatlisiso tse ling tseo mosebetsi o matla haholo o ke keng oa e-ba oa bohlokoa, bonyane ho banna. Phuputso ea 2013 e ileng ea latela banna ba khoebo ba Helsinki ka lilemo tse ka bang mashome a mararo (ha ho na basali ba kenyelletsoeng, ka bomalimabe) mme ba fumana hore sehlopha se sebelisang ka mokhoa o itekanetseng se ne se e-na le li-telomere tse telele ho feta bohle ba neng ba sebelisa matla (ho akarelletsa ba seng bakae ba bapalami ba tlhōlisano) le ba sa kang ba etsa joalo ikoetlisa haholo.
Ho hlakile hore ho na le lipatlisiso tse eketsehileng tse hlokahalang ho fumana hore na boikoetliso bo bokae, le hore na ke mefuta efe, e etsang hore li-telomere tsa hao e be tse nyenyane haholo. Sena se ka fapana ho banna le basali.
Ebe ke Eng Haeba Li-Telomere Tsa Ka li le Nakoana?
Le hoja lipatlisiso ka bolelele ba telomere ke tšimo e ncha, bafuputsi ba lumela hore li-telomere tse khutšoanyane li ka eketsa kotsi ea maloetse a amanang le lilemo tse kang khatello e phahameng ea mali, mathata a kelello, kankere le ho feta.
Lebaka ke hore ha li-telomere li khutsufatsa, ho na le khatello e eketsehileng meleng ea 'mele ea hao ho sebetsa ka nepo. Bafuputsi ba lumela hore boikoetliso bo thusa ho fokotsa tšenyo ea li-radicals tsa mahala, ho lumella 'mele oa hau hore o sebelise mehloli ea oona ho boloka bophelo bo botle ho e-na le ho lokisa tšenyo.
The Bottom Line
Ho ikoetlisa ho u thusa ho phela bophelo bo botle. U lokela ho ikoetlisa eseng feela bakeng sa DNA ea hau, empa le ho ikutloa u le motle 'me u fumane melemo eohle ea boikoetliso.
Mohloli:
Cherkas LF le al. Mokhatlo pakeng tsa mosebetsi oa boipheliso Lekhetlong le Leukocyte Telomere Bolelele. Archives of Internal Medicine. 2008; 168 (2): 154-158.
Savela S et al. Ketsahalo ea boipheliso boemong ba midlife le bolelele ba telomere bo lekantsoe botsofaling. Tlhahlobo ea Gerontology. 2013 Jan; 48 (1): 81-4.