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Milrinone, sold under the brand name Primacor, is a pulmonary vasodilator [2] used in patients who have heart failure. It is a phosphodiesterase 3 inhibitor that works to increase the heart's contractility and decrease pulmonary vascular resistance.
Milrinone, one of the first PDE3 inhibitors used clinically. A PDE3 inhibitor is a drug which inhibits the action of the phosphodiesterase enzyme PDE3. They are used for the therapy of acute heart failure and cardiogenic shock.
Norepinephrine, epinephrine, dopamine, and phenylephrine contribute mainly through their vasopressor (vasoconstrictive) functions to constrict blood vessels to correct hypotension. Whereas, dobutamine, milrinone, enoximone, and levosimendan, act to restore the heart’s pumping function. [80]
Cilostazol is approved for treatment of intermittent claudication and is thought to involve inhibition of platelet aggregation and also inhibition of smooth muscle proliferation and vasodilation. The most studied roles of PDE3B have been in the areas of insulin , IGF1 , and leptin signaling. [ 1 ]
Vasodilation plays a major role in immune system function. Wider blood vessels allow more blood containing immune cells and proteins to reach the infection site. Vasodilation occurs as part of the process of inflammation, which is caused by several factors including presence of a pathogen, injury to tissues or blood vessels, and immune ...
Midodrine is a prodrug which forms the active metabolite, desglymidodrine, which is an α 1-adrenergic receptor agonist and exerts its actions via activation of α 1-adrenergic receptors of the arteriolar and venous vasculature, producing an increase in vascular tone and elevation of blood pressure.
Cerebral hyperaemia is a fundamental central nervous system mechanism of homeostasis that increases blood supply to neural tissue when necessary. [3] This mechanism controls oxygen and nutrient levels using vasodilation and vasoconstriction in a multidimensional process involving the many cells of the neurovascular unit, along with multiple ...
Vascular smooth muscle contracts or relaxes to change both the volume of blood vessels and the local blood pressure, a mechanism that is responsible for the redistribution of the blood within the body to areas where it is needed (i.e. areas with temporarily enhanced oxygen consumption).