Application of tromethamine in drugs for treating hyperuricemia and related disease
A technology for hyperuricemia and tromethamine, which is applied in the fields of urinary system diseases, bone diseases, and drug combinations, can solve the problems of strong irritation of tromethamine, many side effects, and thrombosis, and achieves the promotion of uric acid dissolution. and excretion effect, the effect of weakening the inhibitory effect
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Embodiment 1
[0042] Example 1 The solubility change of uric acid in different alkaline media
[0043] Prepare 1M sodium hydroxide (NaOH), tromethamine (Tris), sodium bicarbonate (NAHCO 3 ), N-ethylethylenediamine (NEEDA), disodium hydrogen phosphate (Na 2 HPO 4 ) and sodium acetate (NaAc) solution. Then dilute it sequentially in a plastic transparent test tube with a cover according to a 2-fold gradient to obtain alkaline solutions with different concentrations (1-700 mM), and the final volume of each test tube is 1 mL. Add a sufficient amount of uric acid (analytical pure) powder into alkaline solutions of different concentrations, shake continuously for more than 4 hours, and add uric acid powder (to make a saturated solution) in the middle to ensure that there is visible undissolved uric acid powder in the test tube before testing (precipitation). Centrifuge in a high-speed centrifuge at 10,000 rpm for 5 minutes before detection, take 200 μL of the supernatant and add it to a 96-wel...
Embodiment 2
[0045] Example 2 Solubility changes of uric acid in different near-neutral media
[0046] Prepare 1M urea, glucose, sodium chloride (NaCl), sodium sulfate (Na 2 SO 4 ), sodium nitrate (NaNO 3 ), potassium chloride (KCl), calcium chloride (CaCl 2 ), magnesium chloride (MgCl 2 ), magnesium sulfate (MgSO 4 ) and ammonium chloride (NH 4 Cl) solution. Then it was diluted successively in plastic transparent test tubes with lids according to a 2-fold gradient to obtain solutions of different concentrations (1-700 mM), and the final volume of each test tube was 1 mL. Add a sufficient amount of uric acid (analytical pure) powder to solutions of different concentrations, shake continuously for more than 4 hours, and replenish uric acid powder appropriately in the middle to ensure that there is visible undissolved uric acid powder (precipitation) in the test tube before the test. Centrifuge at 10,000rpm in a high-speed centrifuge for 5 minutes before detection, take 200 μL of the ...
Embodiment 3
[0048] Example 3 Solubility changes of uric acid in four kinds of amino acid media
[0049] 1M solutions of arginine, lysine, glycine and histidine were prepared respectively. Then it was diluted successively in plastic transparent test tubes with lids according to a 2-fold gradient to obtain solutions of different concentrations (1-700 mM), and the final volume of each test tube was 1 mL. Add a sufficient amount of uric acid (analytical pure) powder to solutions of different concentrations, shake continuously for more than 4 hours, and replenish uric acid powder appropriately in the middle to ensure that there is visible undissolved uric acid powder (precipitation) in the test tube before the test. Centrifuge in a high-speed centrifuge at 10,000 rpm for 5 minutes before detection, take 200 μL of the supernatant and add it to a 96-well plate that is transparent to ultraviolet light, use a microplate reader to detect the optical density at 292 nm, and calculate the uric acid co...
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