Creatineyog ib hom biomolecule uas pab khaws lub zog hauv lub cev. Lub npe tshuaj ntawm Creatine yog N-(aminoiminomethyl)-N-methylglycine, tseem hu ua methylguanidine-acetic acid. Creatine synthesis feem ntau tshwm sim hauv cov leeg, daim siab thiab ob lub raum, tab sis nws tuaj yeem tau txais los ntawm cov khoom noj. Nyob rau hauv lub cev, Creatine khaws cia rau hauv cov leeg thiab tuaj yeem muab cov khoom siv hluav taws xob siab, yog li nws tau siv dav hauv kev tawm dag zog lub cev thiab kev ncaws pob. Tom ntej no, txhua txoj kev hluavtaws ntawm Creatine yuav qhia meej.
1. Kev siv lub siab ua haujlwm:
Lub siab synthesis ntawm Creatine yog txoj hauv kev tseem ceeb ntawm Creatine synthesis. Qhov no synthesis yog ua los ntawm peb cov amino acids nyob rau hauv lub siab: methionine, aspartic acid thiab glycine. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:
1) Methionine yog txuas nrog glycine los ntawm methionine peptide acyltransferase (S-adenosylmethionine: guanidinoacetate N-methyltransferase, SAM-GAT) hauv daim siab los tsim S-adenosylmethionine (S-adenosylmethionine).
2) S-adenosylmethionine catalyzes cov tshuaj tiv thaiv sib txuas ntawm glycine thiab aspartic acid los tsim cov khoom nruab nrab glycine formamide (guanidinoacetate).
3) Thaum kawg, cov tshuaj tiv thaiv hydrolysis ntawm glycine formamide thiab dej molecules tsim Creatine.
Cov txheej txheem no feem ntau yog nyob ntawm kev ua ntawm daim siab catalytic enzymes, suav nrog ntau yam dehydrogenase, methyltransferase thiab lwm yam oxaloacetate transferases.
2. Txoj kev raum synthesis:
Creatine yog synthesized los ntawm lub raum los ntawm ib tug txheej txheem hu ua lub raum methyleneation txoj kev, nyob rau hauv uas methyltransferases catalyze cov tshuaj tiv thaiv ntawm SAM thiab glycine los tsim creatine. Qhov pib substrate ntawm cov txheej txheem no tsis yog methionine, tab sis arginine. Arginine hloov mus rau hauv glycine, thiab glycine yog ua ke nrog SAM los tsim Creatine. Cov txheej txheem tshuaj tiv thaiv no yuav tsum tau catalyzed los ntawm methyltransferase, thiab lub ntsiab catalytic tivthaiv yog renin.
3. Khoom noj khoom haus qhov txheej txheem synthesis:
Synthesis ntawm creatine los ntawm cov khoom noj yog tshwm sim hauv cov nqaij thiab ntses. Cov zaub mov no muaj cov carnitine ntau, uas hloov pauv hauv lub cev mus rau methylguanidinoacetic acid thiab dimethylguanidinoacetic acid. Cov khoom no ces thauj los ntawm cov ntshav mus rau cov leeg, qhov chaw uas lawv hloov mus rau nws thiaj li tsim Creatine.
Nws yog ib qho tsim nyog sau cia tias creatine tsim los ntawm lub siab thiab lub raum yog thauj mus rau cov leeg kom khaws cia thiab siv. Yog li ntawd, thaum muaj teeb meem nrog lub siab thiab lub raum ua haujlwm, nws yog ib qho nyuaj rau tib neeg lub cev los tsim creatine txaus, thiab yuav tsum tau txais creatine ntau dua los ntawm cov khoom noj.
Feem ntau, cov synthesis ntawm Creatine plays lub luag haujlwm tseem ceeb hauv tib neeg kev noj qab haus huv thiab kev txhim kho kev ua si. Los ntawm kev nkag siab txog txoj hauv kev sib txawv ntawm kev sib txuas, peb tuaj yeem nkag siab zoo txog cov txheej txheem physiological hauv lub cev kom noj zaub mov ntau ntxiv lossis siv lwm cov kev kho mob ntxiv raws li xav tau.
Creatine yog ib qho derivative ntawm amino acid nrog cov tshuaj formula C4H9N3O2. Nws yog tsuas yog pom nyob rau hauv cov leeg nqaij thiab paj hlwb, uas tuaj yeem nce tus nqi ntawm cov leeg nqaij hlawv ATP thiab pab lub cev lub zog metabolism. Cov qauv molecular ntawm Creatine suav nrog pawg methyl, pawg triamino, pawg carboxylic acid, thiab peptide daim ntawv cog lus ua ke nrog nitrogen atom. Creatine muaj lub nplhaib uas muaj nitrogen hu ua lub nplhaib urea, uas muaj peev xwm ua rau lub cev thiab tshuaj lom neeg nrog rau lwm cov molecules. Nws kuj yog ib qho precursor rau cov leeg nqaij lub zog cia molecule phosphocreatine.
Creatine yog soluble tag nrho hauv dej, qhov qis dua pH, siab dua qhov solubility. Nws yog hmoov dawb ntawm qhov kub thiab txias, tasteless thiab tsw. Creatine yog ib yam khoom uas tsis muaj zog acidic nrog pKa ntawm ib ncig ntawm 10. Qhov no txhais tau hais tias nyob rau hauv nruab nrab los yog acidic tej yam kev mob, nws ua ib feem protonated. Ntawm PL interface (nruab nrab lipids thiab dej), creatine muaj kev ua haujlwm siab, thiab vim nws cov hydrophobicity, nws tuaj yeem cuam tshuam nrog pawg hydrophobic thiab tsim cov pob txha pob txha ntawm cov leeg nqaij.
Nyob rau hauv tib neeg lub cev, Creatine, ua ke nrog glutamic acid, tuaj yeem tsim cov creatine phosphatase rau lub zog cia, uas yog qhov ncaj qha ntawm lub zog dawb, thiab yog lub zog phosphate, uas yog khaws cia hauv cov leeg nqaij rog. Cov metabolism hauv Creatine nyob rau hauv lub cev muaj feem xyuam rau lub contraction mechanism ntawm cov leeg. Nws tuaj yeem txhawb nqa ATP tsim thaum lub sij hawm cov leeg nqaij contraction thiab tswj cov leeg nqaij.
Hauv cov tshuaj tiv thaiv tshuaj, creatine tuaj yeem oxidized los ntawm nitrite rau formamide thiab formate. Qhov no oxidation yog thim rov qab, tab sis nyob rau hauv siab concentrations thiab tej yam kev mob, cov tshuaj tiv thaiv no yuav tsum ceev. Muaj ntau txoj hauv kev rau lub neej ntawm creatine, feem ntau txoj kev yog extraction lossis tshuaj synthesis. Piv txwv li, tshuaj creatine tuaj yeem npaj tau los ntawm kev sib xyaw methylated zeatin, ib qho sib xyaw zoo ib yam li creatine, nrog carbamate.
Piv txwv li, Creatine yog ib qho tseem ceeb ntawm cov nqaij leeg nrog ntau yam kev ua ub no thiab cov khoom siv tshuaj lom neeg, thiab tuaj yeem ua lub luag haujlwm tseem ceeb hauv lub cev xws li cov leeg lub zog cia, lub zog metabolism, thiab cov leeg mob hauv tib neeg lub cev.
Innovation yog lub zog tsav tom qab tsim innovation. Raws li cov khoom siv dav siv hauv tib neeg kev noj qab haus huv, Creatine tau tsim tawm deb tshaj li tam sim no. Creatine muaj ntau yam kev siv, suav nrog kev ua kis las, kev noj qab haus huv rau cov neeg laus, lub paj hlwb, thiab lwm yam. Nov yog qee qhov kev cia siab rau yav tom ntej kev txhim kho thaj chaw ntawm Creatine:
1. Kev noj qab haus huv:
Creatine tau siv dav hauv ntiaj teb kev ua kis las, tab sis feem ntau ntawm kev tshawb fawb tam sim no yog tsom rau kev txhim kho cov leeg nqaij thiab ua kom muaj zog. Kev tshawb fawb ntxiv tuaj yeem tso cai rau peb nkag siab ntau ntxiv txog lub luag haujlwm Creatine hauv kev ua kom muaj zog, lub zog, thiab kev ua siab ntev, nrog rau lwm yam ntawm kev tawm dag zog, xws li nws txoj kev sib raug zoo rau cov leeg nqaij thiab kho. Kev tshawb nrhiav ntxiv kuj tseem yuav suav nrog kev siv Creatine los pab tshawb fawb txog cov teeb meem kev noj qab haus huv ntawm lub cev, xws li kev rov ua haujlwm tom qab kev tawm dag zog thiab kev npaj noj zaub mov.
2. Lub plawv thiab paj hlwb:
Nyob rau hauv xyoo tas los no, cov kws tshawb fawb tau pib siv Creatine hauv kev tshawb fawb hauv kev noj qab haus huv ntawm lub plawv thiab paj hlwb. Lawv tshawb nrhiav Creatine cov ntawv thov, suav nrog kev tiv thaiv thiab kho mob plawv tsis ua haujlwm thiab lwm yam kab mob, neuroprotection thiab ntau yam haujlwm hauv lub paj hlwb. Kev tshawb fawb yav tom ntej hauv cheeb tsam no yuav nkag mus tob dua thiab yuav xav txog qhov muaj peev xwm ntawm kev siv cov tshuaj tiv thaiv neuroprotective ntawm cov teb sib txawv lossis kev npaj los ntawm Creatine.
3. Txhim khu kev nco:
Kev sib txuas ntawm Creatine thiab txhim kho kev txawj ntse thiab kev paub txog kev ua haujlwm tau txais kev saib xyuas ntxiv. Ntau tus kws tshawb fawb ntseeg tias Creatine tuaj yeem ua kom ceev ceev ntawm kev khaws cov ntaub ntawv tshiab hauv lub hlwb thiab kev xa cov ntaub ntawv, thiab tuaj yeem txhim kho lub sijhawm luv luv thiab kev nco ua haujlwm. Cov kws tshawb fawb tab tom tshawb nrhiav kev siv Creatine los kho tus kab mob dementia, uas yuav ua rau muaj kev tshawb fawb ntau ntxiv los tshawb txog nws cov teebmeem hauv lawv cov kev kho mob, kom deb ntawm kev txwv.
4. Txhawb kev noj qab haus huv:
Kev siv Creatine raws li kev kho mob rau ntau yam kev mob nkeeg tau raug kawm ntxiv. Cov no suav nrog cov kab mob plawv, ntshav qab zib, thiab teeb meem ntawm lipid metabolism, thiab lwm yam. Kev tshawb fawb ntawm cov ntawv thov no suav nrog kev kho mob ntev, thiab kev siv Creatine ua lwm txoj kev kho. Cov kev tshawb fawb no, nrog rau kev soj ntsuam thiab kev tshawb fawb tsiaj ntau ntxiv, yuav ua rau muaj kev txiav txim siab ntau ntxiv txog nws cov nqi raws li kev xaiv kho mob rau yav tom ntej.
Txawm hais tias Creatine tsis yog ib qho kev kho-tag nrho, kev tshawb fawb tau pom nws daim ntawv thov dav hauv ntau txoj hauv kev. Nyob rau hauv lub neej yav tom ntej, nws yuav dhau los ua kev tsom mus rau ntau qhov chaw, xws li kev txhim kho kev txawj ntse kev txawj ntse thiab kev noj qab haus huv mus sij hawm ntev hauv kev siv, thiab ntau tus kws tshawb fawb yuav mob siab rau lawv tus kheej los nrhiav txoj hauv kev tshawb fawb kom nws tuaj yeem siv tau ntau dua yav tom ntej.