Mochini oa New Tech oa ho ntša le ho lemoha ka botlalo oa nucleic acid

Matla a mahlano:
● Sesebelisoa se hlophisitsoeng ka ho ntšoa ha nucleic acid le mohato o hloekisitsoeng
● Sesebelisoa se hlophisitsoeng ka ultrasonic extraction module
● Sesebelisoa se hlophisitsoe ka boiketsetso ka botlalo
● Sesebelisoa se hlophisitsoe ka matlafatso e fapaneng ea mocheso
● Sesebelisoa se hlophisitsoe ka lisebelisoa tse koetsoeng ka botlalo

1.Na lisebelisoa tsa ho lemoha ha nucleic acid li hloka ho ntšoa le ho hloekisoa?
Molao-motheo oa ho lemoha ha nucleic acid ke o latelang: tlas'a ts'ebetso ea primer, DNA polymerase e sebelisetsoa ho etsa amplification ea chain reaction ho template ea DNA / RNA (e hlokang reverse transcript ea NA), 'me palo ea lets'oao la fluorescent le lokollotsoeng le fumanoa ho tseba. hore na sampuli e na le nucleic acid (DNA / RNA) ea pathogen e lokelang ho fumanoa.

1) Mehlala e sa kang ea ntšoa kapa ea hloekisoa e ka 'na ea e-ba le likarolo tse ngata tse amang sephetho sa ho qetela: nuclease (e ka senyang sepheo sa nucleic acid le ho baka bobe ba bohata), protease (e ka fokotsang DNA polymerase le ho baka phoso e fosahetseng), heavy metal. letsoai (e leng se lebisang ho inctivation ea synthase le ho baka bohata ), acidic haholo kapa alkaline PH (e ka 'nang ea etsa hore karabelo e hlōlehe), RNA e sa fellang (e lebisang ho phoso e fosahetseng ea reverse transcript).

2) Lisampole tse ling li thata ho holisa ka kotloloho: Gram-positive le likokoana-hloko tse ling, ka lebaka la marako a tsona a teteaneng le meaho e meng, haeba li sa kenelle ts'ebetsong ea ts'ebetso ea nucleic acid le tlhoekiso, lisebelisoa tsa mahala tsa ho ntša li ka 'na tsa hlōleha ho etsa joalo. mehlala.

Ka hona, ho kgothaletswa ho khetha lisebelisoa tsa tlhahlobo kapa sesebelisoa se hlophisitsoeng ka mohato oa ho ntša nucleic acid.

2. Ho ntšoa ha lik'hemik'hale kapa 'mele oa ultrasonic fragmentation extraction?
Ka kakaretso, ho ntšoa ha lik'hemik'hale ho ka sebelisoa ho boholo ba kalafo le tlhoekiso.Leha ho le joalo, ho libaktheria tsa Gram-positive tse nang le marako a teteaneng le likokoana-hloko tse ling, ho boetse ho na le taba ea hore ho ntšoa ha lik'hemik'hale ha ho khone ho fumana li-template tse sebetsang tsa nucleic acid, e leng se etsang hore ho fumanoe hore ha ho nepahale.Ho phaella moo, ho ntšoa ha lik'hemik'hale hangata ho sebelisa mahlahana a matla, haeba ho hlajoa ho sa tsitsa, ho bonolo ho hlahisa alkali e matla tsamaisong ea karabelo, ho fella ka liphello tse sa nepahalang.

Karohano ea mahlaseli e sebelisa ho silakanya 'mele, e sebelisitsoeng ka katleho ke GeneXpert, khoebo e ka sehloohong tšimong ea POCT bakeng sa tšebeliso ea batho, 'me e na le molemo o feletseng oa ho ntša nucleic acid ea lisampole tse rarahaneng (joaloka Mycobacterium tuberculosis).

Ka hona, ho kgothaletswa hore o kgethe lisebelisoa tsa teko kapa sesebelisoa se entsoeng ka mohato oa ho ntša nucleic acid.'me e nepahetse haeba ho na le module ea ultrasonic extraction.

3. Manual , Semi-automatic le ka ho feletseng?
Bona ke bothata ba litšenyehelo tsa basebetsi le bokhabane ba mosebetsi.Hona joale, lipetlele tsa liphoofolo tse ruuoang lapeng tse se nang basebetsi ba lekaneng, 'me ho ntšoa le ho lemoha ha nucleic acid ke mosebetsi o hlokang tsebo le boiphihlelo bo itseng.Ha ho na pelaelo ea hore mochini o hloahloa oa nucleic acid ka botlalo ke khetho e phethahetseng.

4. Ho phahamisa mocheso kamehla kapa ho holisa mocheso o fapaneng?
Karabelo ea amplification ke sehokelo sa ho lemoha ha nucleic acid, 'me theknoloji ea profeshenale e amehang sehokelong sena e rarahane.Ka mantsoe a mang, li-enzyme li sebelisoa ho holisa nucleic acid.Ts'ebetsong ea ho holisa, ho fumanoa lets'oao la fluorescence kapa lets'oao le kentsoeng la fluorescence.Ka kakaretso, ha lets'oao la fluorescence le hlaha pejana, ho na le palo e kholo ea liphatsa tsa lefutso tsa sampole.

Mocheso o sa khaotseng oa amplification ke nucleic acid amplification ka mocheso o tsitsitseng, ha mocheso o fapaneng oa amplification ke cyclic amplification ka tieo ho latela denaturation-annealing-extension.Nako e sa khaotseng ea ho phahamisa mocheso e 'nile ea etsoa, ​​​​ha nako e fapaneng ea ho phahamisa mocheso e ameha haholo ke lebelo la ho phahama ha mocheso le ho theoha ha sesebelisoa (hona joale, bahlahisi ba bangata ba khonne ho etsa li-cycle tsa 40 tsa amplification ka metsotso e ka bang 30).

Haeba maemo a laboratori a le matle 'me libaka li le thata, hoa utloahala ho bolela hore phapang ea ho nepahala lipakeng tsa tse peli e ke ke ea ba kholo.Leha ho le joalo, ho phahamisa mocheso o fapaneng ho tla kopanya lihlahisoa tse ngata tsa nucleic acid ka nako e khuts'oane.Bakeng sa lilaboratori tse se nang libaka tse thata le basebetsi ba koetliso ea litsebi, kotsi ea ho lutla ha aerosol ea nucleic acid e tla ba kholoanyane, 'nete ea bohata e etsahala hang ha ho lutla ho etsahala, mme ho leng thata haholo ho e felisa.

Holim'a moo, Mocheso o sa khaotseng oa ho holisa mocheso o boetse o na le monyetla oa ho holisa ka mokhoa o sa khetheheng ha sampole e rarahane (mocheso o lekanyelitsoeng oa karabelo o tlase, 'me ha mocheso o ntse o phahama, ho ba betere ho ntlafala ho tlamang primer).

Mabapi le thekenoloji ea morao-rao, ho phahamisa mocheso o fapaneng ho tšepahala haholoanyane.

5. U ka qoba kotsi ea ho lutla ha lihlahisoa tsa nucleic acid amplification joang?
Hajoale, bahlahisi ba bangata ba khetha mofuta oa tšoelesa ea PCR joalo ka nucleic acid reaction tube, e tiisitsoeng ka likhohlano, 'me mocheso o fetoha ka har'a mocheso o fapaneng oa mocheso oa mocheso o fapaneng oa PCR o fihla ho 90 degree.
Centigrade .Ts'ebetso e pheta-phetoang ea ho atolosoa ka mocheso le ho koenya ka serame ke phephetso e kholo ho tiisoa ha tube ea PCR, 'me mofuta oa tšoelesa oa PCR tube o batla o le bonolo ho baka ho lutla.

Ho molemo ho amohela karabelo ka "kit/tube" e tiisitsoeng ka botlalo ho qoba ho lutla ha sehlahisoa sa karabelo .E ka ba hantle haeba ho ka ba le lisebelisoa tse tiisitsoeng ka botlalo bakeng sa ho ntšoa le ho sibolloa ha nucleic acid.

Kahoo mochini o mocha oa "nucleic acid" o ikemetseng oa "nucleic acid" o na le likhetho tse hlano tse kaholimo.
mochine oa ho lemoha


Nako ea poso: Aug-09-2023