Yog tias koj tau tshawb nrhiav tsis yog-kev xaiv phais rau hnub nyoog- ntsig txog kev tsis pom kev, tej zaum koj yuav tau hla N-acetyl-L-carnosine qhov muag tee thiab xav tsis thoob qhov kev tshawb fawb tiag tiag hais li cas. Tom qab ntau ntawm cov khoom no yog cov khoom siv raw uas tseem ceeb npaum li cov qauv ua tiav:N-Acetyl-L-Carnosine hmoov.
Phau ntawv qhia no piav qhia seb N-acetyl-L-carnosine yog dab tsi, nws ua haujlwm li cas hauv qhov muag-tej formulations, dab tsi cov ntaub ntawv pov thawj kho mob qhia, thiab dab tsi B2B buyers, formulators, thiab procurement teams yuav tsum paub ua ntej mus nrhiav cov khoom xyaw no - tag nrho hauv cov lus yooj yooj yim, siv tau.
N-Acetyl-L-Carnosine yog dab tsi?
N-Acetyl-L-Carnosine (tseem hu uaAcetylcarnosinethiab feem ntau luv rau NAC) yog ib daim ntawv hloov kho ntawm carnosine, ib txwm tshwm sim dipeptide ua los ntawm ob amino acids: beta-alanine thiab L-histidine. Koj lub cev tsim cov carnosine ib txwm muaj, thiab nws muaj nyob rau hauv siab concentrations hauv cov leeg nqaij thiab lub hlwb.
Qhov "N-acetyl" ntu yog hais txog kev hloov kho tshuaj: ib pawg acetyl txuas rau carnosine molecule. Qhov kev hloov me me no muaj qhov cuam tshuam loj rau qhov sib xyaw ua ke hauv lub cev.
Vim li cas qhov kev hloov kho no tseem ceeb?Koj lub cev muaj cov enzyme hu ua carnosinase, uas sai sai ua rau L-carnosine. Thaum cov carnosine zoo tib yam siv rau lub qhov muag, cov kev tshawb fawb tau pom tias nws tsis tuaj yeem khaws cov ntsiab lus tseem ceeb. Cov pab pawg acetyl hauv N-acetyl-L-carnosine ua raws li kev tiv thaiv kev tiv thaiv ntawm cov enzymatic tawg, ua rau cov khoom sib xyaw kom ruaj khov thiab tso cai rau nws mus cuag cov ntaub so ntswg qhov muag uas nws tuaj yeem ua haujlwm tau tiag tiag.
Qhov kev txhim kho kev ruaj ntseg no tshwj xeeb tshaj yog muaj txiaj ntsig rau kev siv ophthalmic. Cov acetylation kuj tsim kom muaj qhov sib npaug ntau dua hydrophobic-hydrophilic profile, uas pab cov compound nkag mus rau lipid-nplua nuj cell membranes - suav nrog lub cornea - zoo dua li cov carnosine li niaj zaus.
Nws Ua Haujlwm Li Cas Ua Cov Tshuaj Txhuam Hniav?
Thaum tsim los ua cov tshuaj pleev qhov muag, N-acetyl-L-carnosine ua haujlwm uaprodrug. Ib tug prodrug yog ib qho inactive compound uas, thaum nws nkag mus rau hauv lub cev, tau hloov dua siab tshiab rau hauv nws active daim ntawv. Nyob rau hauv cov ntaub ntawv no, raws li N-acetyl-L-carnosine hla lub cornea mus rau hauv lub aqueous lom zem (cov kua nyob rau hauv lub xub ntiag ntawm lub qhov muag), nws undergoes enzymatic deacetylation - txhais tau tias cov acetyl pab pawg neeg raug tshem tawm - thiab hloov rov qab mus rau hauv lub active L{carnoine nyob qhov twg yuav tsum tau ncaj qha.
Qhov kev tswj hwm no -tso tawm mechanism muab kev kho mob qib siab ntawm carnosine raws nraim hauv cov ntaub so ntswg qhov muag, yam tsis muaj kev puas tsuaj tam sim ntawd tshwm sim thaum cov carnosine siv ncaj qha.
Thaum hloov dua siab tshiab, L-carnosine ua los ntawm ntau txoj hauv kev:
- Antioxidant tiv thaiv: Nws scavenges reactive oxygen hom (dawb radicals) uas tuaj yeem ua puas lub lens proteins
- Kev tiv thaiv -glycation ua haujlwm: Nws pab tiv thaiv thiab txawm thim rov qab tsim cov khoom lag luam qib siab glycation kawg (AGEs), cov teeb meem sib txuas uas sib sau hauv lub lens thiab ua rau cov kab mob cataract.
- Membrane tiv thaiv: Nws pab tiv thaiv cov lipid membranes ntawm lub qhov muag hlwb los ntawm oxidative puas
Ib txoj kev tshawb fawb soj ntsuam xyoo 2009 tau piav qhia txog N-acetylcarnosine ua "universal aldehyde thiab ROS scavenger" uas ua haujlwm nyob rau hauv ob qho tib si aqueous thiab lipid ib puag ncig, zoo tiv thaiv ROS-induced kev puas tsuaj rau biomolecules[2].
Kev Tshawb Fawb Kev Tshawb Fawb Qhia Dab Tsi?
Txoj kev tshawb fawb tshaj plaws ntawm kev siv N-acetylcarnosine qhov muag tee yog rau hnub nyoog- ntsig txog cataracts.
- 2002 sim (49 tus neeg mob): Tom qab rau lub hlis, 90% ntawm qhov muag kho tau pom qhov pom kev zoo dua qub, 88.9% muaj qhov muag tsis pom kev tsawg dua, thiab 41.5% tau ntsuas lub lens txhim kho. Cov txiaj ntsig tau kav ntev li 24 lub hlis, tsis muaj qhov cuam tshuam[1].
- Kev tshawb fawb 2009 (tshaj 50,500 tus neeg mob): Tau lees paub qhov ua tau zoo, kev nyab xeeb, thiab kev tiv thaiv zoo rau kev tiv thaiv thiab kho qhov muag tsis pom kev hauv cov neeg laus[2].
- 2004 txoj kev tshawb fawb (137 tus neeg tsav tsheb laus): Tom qab plaub lub hlis, kev kho qhov muag pom tau tias muaj kev txhim kho tseem ceeb hauv kev pom kev pom thiab qhov muag pom kev pom zoo piv rau cov placebo (p <0.001). Tsis muaj teebmeem dabtsi[3].
Nco tseg:Cov kev tshawb fawb feem ntau yog los ntawm ib pab pawg tshawb fawb. Cov ntawv pov thawj ywj pheej loj dua yuav ntxiv dag zog rau cov pov thawj hauv paus.
Kev nyab xeeb thiab kev phiv
Thoob plaws ntau qhov kev sim tshuaj, N-Acetylcarnosine qhov muag tee tau qhia txog kev nyab xeeb zoo heev.
Dab tsi cov neeg siv yuav ntsib:Qee tus neeg qhia tias mob me me, ib ntus stinging lossis hlawv tam sim ntawd tom qab instilling cov tee. Cov kev xav no feem ntau ploj mus ntawm lawv tus kheej.
Cov ntaub ntawv kho mob dab tsi qhia:Hauv kev sim xyoo 2002, kev ua siab ntev tau zoo nyob rau hauv yuav luag txhua tus neeg mob, tsis muaj ntawv ceeb toom ntawm qhov muag lossis lub cev tsis zoo [1]. Txoj kev tshawb fawb tsav tsheb xyoo 2004 zoo ib yam qhia tias tsis muaj qhov tsis zoo los yog lub cev tsis zoo[3].
Kev ceev faj dav dav:
Yog tias koj hnav cov lo ntsiab muag, tshem tawm lawv ua ntej siv cov tee dej thiab tos tsawg kawg 15 feeb ua ntej rov tso dua
Tsis txhob kov lub taub hau rau koj lub qhov muag lossis ib qho chaw kom tsis txhob muaj kab mob
Nrhiav kev kho mob yog tias stinging ua rau tsis xis nyob lossis yog tias koj muaj mob qhov muag, pom kev hloov pauv, lossis mob liab liab
Nrog koj tus kws kho mob tham yog tias koj noj lwm qhov muag - tso tshuaj los yog muaj keeb kwm ntawm kev phais qhov muag
Cov ntaub ntawv uas pom muaj nyob rau hauv cov khoom muag muag tam sim no
N-acetyl-L-carnosine muaj nyob rau hauv ntau lub khw muag khoom muag, feem ntau tsim los ua 1% kev daws teeb meem. Cov khoom lag luam tam sim no hauv khw muaj xws li:
| Khoom | Nco ntsoov | Cov yam ntxwv tseem ceeb |
|---|---|---|
| Tau -C Eye Drops | 1% NAC | Original patented formula; ob 5 ml vials rau ib lub thawv |
| Ntse Qhov Muag | 1% NAC | Xws li cov tshuaj lubricating HPMC thiab glycerin; 2 x5ml |
| AOR Ortho Qhov muag | 1% NAC | Sterile vials; pH 6.3-6.4; txhawb kev txo qis glare |
| Brite Eyes III | Muaj NAC | Antioxidant mis nrog ntxiv cov khoom tiv thaiv |
| Hylube / Visiwet | Muaj NAC | Ua ke nrog lubricants rau qhov muag qhuav thiab kev txhawb nqa antioxidant |
Cov khoom no feem ntau ua ke NAC nrog cov khoom siv roj nplua nyeem xws li hypromellose (HPMC) lossis glycerin, thiab cov khoom khaws cia zoo li benzyl cawv kom tsis txhob muaj menyuam.
| N-Acetyl-L-carnosine hmoov |
Nws txawv li cas L-Carnosine?
Qhov no yog ib lo lus nug tseem ceeb rau cov tsim qauv thiab pab pawg muag khoom.
Cov qauv sib txawv:
N-acetyl-L-carnosine muaj ib pab pawg acetyl ntxiv nrog rau beta-alanine feem ntawm carnosine molecule. Qhov kev hloov me me no muaj qhov cuam tshuam loj heev.
Stability sib txawv:
Tsis tu ncua L-carnosine tau tawg sai sai los ntawm cov enzyme carnosinase hauv cov ntshav plasma thiab cov ntaub so ntswg. Thaum siv tshuaj pleev xim rau lub qhov muag, kev tshawb fawb tau pom tias L-carnosine tsis tuaj yeem ua rau muaj txiaj ntsig zoo. N-acetyl-L-carnosine tiv thaiv qhov kev puas tsuaj ntawm cov enzymatic no, tswj nws cov qauv kev ncaj ncees rau lub sijhawm ntev - cov tshuaj- qib formulations muab lub neej txee 24-hli thaum khaws cia kom zoo.
Qhov sib txawv ntawm qhov sib txawv:
N-acetyl-L-carnosine muaj qhov sib npaug ntau dua hydrophobic-hydrophilic profile, ua kom muaj kev nkag tau zoo dua los ntawm lipid- cov cell membranes nplua nuj, suav nrog cov pob txha pob txha - thaj chaw uas L-carnosine tawm tsam kom nkag mus tau zoo.
Mechanism sib txawv:
NAC ua raws li cov tshuaj, maj mam hloov mus rau L-carnosine hauv lub qhov muag dhau 15-30 feeb. Qhov no muab kev kho mob mus ntev li qhov xav tau, tsis zoo li ncaj qha L-carnosine, uas raug puas tsuaj sai.
Rau qhov muag -tej formulations, N-acetyl-L-carnosine yog qhov kev xaiv zoo. Li niaj zaus L-carnosine tsuas yog tsis muaj sia nyob ntev txaus kom ncav cuag cov ntaub so ntswg hauv lub ntsiab lus.
N-Acetylcarnosine vs N-Acetylcysteine: Cov Lus Qhia Ceev
Ib qho kev xav tsis meej pem yog qhov sib txawv ntawm N-acetylcarnosine (NAC) thiab N-acetylcysteine (kuj feem ntau hu ua NAC). Cov no yog cov sib txawv kiag li.
| N-Acetyl-L-Carnosine | N-Acetylcysteine | |
|---|---|---|
| Nws yog dab tsi | Ib dipeptide (beta-alanine + histidine) | Hloov kho amino acid (cysteine) |
| Siv hauv kev kho qhov muag | Qhov muag tee rau cataracts, glare rhiab heev | Qhov ncauj ntxiv rau kev noj qab haus huv ua pa; kev siv ophthalmic txwv |
| Mechanism | Prodrug xa carnosine rau antioxidant thiab tiv thaiv -glycation teebmeem | Precursor rau glutathione rau kev txhawb nqa antioxidant |
Hauv qhov muag - chaw tu,N-acetyl-L-carnosineyog qhov sib xyaw tshwj xeeb uas tau kawm rau kev siv tshuaj pleev ophthalmic[1][2][3].
Xaus
N-acetyl-L-carnosine qhov muag tee tau nyiam cov kev tshawb fawb raug cai, txhawb nqa los ntawm ntau qhov kev sim tshuaj uas qhia cov txiaj ntsig rau qhov pom kev pom thiab qhov muag tsis pom kev hauv lub hnub nyoog- ntsig txog kab mob cataracts, nrog rau kev ruaj ntseg profile[1][2][3].
Yog tias koj tab tom tshawb nrhiav cov khoom xyaw rau ib yam khoom, cov khoom nyoos tom qab cov tee no -N-Acetyl-L-Carnosine hmoov- yog dab tsi ua rau lub formulation ua tau. Nkag siab txog kev tshawb fawb - nws txawv li cas ntawm carnosine li niaj zaus, nws ua haujlwm li prodrug li cas, thiab cov ntaub ntawv pov thawj kho mob tau qhia li cas - yog thawj kauj ruam mus rau kev paub xaiv.