Lub luag haujlwm tseem ceeb ntawm cov vitamin K yog txhawm rau pab ua kom cov ntshav txhaws ib txwm, tab sis nws kuj tseem tuaj yeem ua lub luag haujlwm hauv cov pob txha calcification. Menadione (Vitamin K3) yog cov roj-soluble vitamin precursor uas hloov mus rau hauv menaquinone hauv daim siab. Vitamin K1 thiab K2 yog ib txwm tshwm sim ntawm vitamin K.
Dab tsi yog qhov ua haujlwm ntawm menadione?
Menadione yog ib tug tswv cuab ntawm chav kawm ntawm 1, 4-naphthoquinones uas yog 1, 4-naphthoquinone uas yog hloov ntawm txoj hauj lwm 2 los ntawm ib pawg methyl. Nws yog siv los ua khoom noj khoom haus ntxiv thiab kho hypoprothrombinemia.
Yuav ua li cas cov vitamin ua menadione muab?
Menadione nicotinamide bisulfite yog ib qho chaw bioactive ntawm vitamin K thiab niacin ua haujlwm rau menyuam qaib. J Nutr. 1993 Plaub Hlis Ntuj; 123(4): 737-43.
Qhov tseem ceeb tshaj plaws ntawm vitamin K yog dab tsi?
Vitamin K yog hais txog ib pawg ntawm cov vitamins uas muaj roj-soluble uas ua lub luag haujlwm hauv ntshav txhaws, pob txha metabolism, thiab tswj cov ntshav calcium. Lub cev xav tau cov vitamin K los tsim cov prothrombin, ib qho protein thiab co co hauv qhov tseem ceeb hauv cov ntshav txhaws thiab cov pob txha metabolism.
Vim li cas menadione contraindicated hauv cov menyuam mos?
Cov Me Nyuam Tshiab thiab G 6 PD cov neeg mob tsis txaus ntshai tsam hemolysis.
