Trimethylamine N-oxide dihydrate

Note

(1)Rat hearts were perfused, and aortic rings from each experimental animal were immersed in K⁺-H⁺ buffer solution with or without the addition of Trimethylamine N-oxide (dihydrate) (100 μM final concentration). After 1 h of perfusion or incubation, the tissue samples were washed to eliminate the residues of TMAO-containing buffer solution and further homogenized with water in an OMNI Bead Ruptor 24 at a w/v ratio of 1:10^[1].
(2)All experimental animals were housed under standard conditions (21-23℃, 12-hour light/dark cycle, relative humidity 45-65%) with unlimited access to food (R70 diet) and water^[1].
(3)The mice from the first experimental group received Isoproterenol (HY-B1670A) at a dose of 10 μg/mouse, but the animals from the second group received Isoproterenol (HY-B1670A) and Trimethylamine N-oxide (dihydrate) at doses of 10 μg/mouse and 120 mg/kg, respectively. After 30 min, the experimental animals were anesthetized with isoflurane once more to record the cardiac response to acute cardiac stress and the impact of Trimethylamine N-oxide (dihydrate) on the inotropic and chronotropic effects. For the next seven days, the mice in the second group received Trimethylamine N-oxide (dihydrate) together with drinking water at a dose of 120 mg/kg, while the animals from the first group received pure drinking water^[1].