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Panangin in the treatment of cardiovascular diseases

Potassium and magnesium deficiency is observed in patients with heart disease, type 2 diabetes mellitus (DM), chronic alcoholism, genetic forms of kidney loss of potassium and magnesium (Gitelman and Bartter syndrome), severe diarrhea and vomiting, malnutrition, taking certain drugs [1,4,5]. Potassium and magnesium are intracellular cations that play a major role in the functioning of many enzymes, the interaction of macromolecules and intracellular structures, and in the mechanism of muscle contractility. The intra- and extracellular ratio of potassium, magnesium, calcium and sodium ions affects myocardial contractility. Low levels of potassium and/or magnesium ions in the internal environment can have a proarrhythmic effect [6–8], predispose to the development of arterial hypertension (AH) [9–11], atherosclerosis of the cerebral and coronary arteries [12,13], and the occurrence of endothelial dysfunction ( due to the production of nitric oxide and participation in platelet aggregation), type 2 diabetes and metabolic changes in the myocardium [1,14]. One of the most important physiological functions of potassium is maintaining the membrane potential of neurons, myocytes and other excitable structures of myocardial tissue. Potassium is the main intracellular cation in tissues of various organs. Under normal conditions, the cell contains 150–160 mmol/l, and the blood serum contains 3.5–5.5 mmol/l. Potassium ions (K+) are involved in the formation of cellular action potentials (depolarization and repolarization phases), transmission of nerve impulses, contraction of cardiomyocytes, skeletal and smooth muscle fibers, and regulate and maintain the functions of the urinary system. An imbalance between intra- and extracellular potassium content leads to a decrease in the contractility of smooth muscle fibers and myocardium, the occurrence of arrhythmia, tachycardia and increased toxicity of cardiac glycosides [10]. The daily potassium requirement of an adult is 40–100 mmol/l. The causes of hypokalemia are associated with insufficient intake of potassium from food (improper and “fast” nutrition), increased removal from the body (vomiting, diarrhea, uncontrolled use of diuretics), increased blood pressure (primary hyperaldosteronism, renovascular hypertension, long-term use of corticosteroids), increased potassium consumption by tissues (insulin administration, excess catecholamines) [13]. Magnesium is a cofactor in more than 300 enzymatic reactions of energy metabolism and the synthesis of proteins and nucleic acids, reduces contractile tension and heart rate, leading to a decrease in myocardial oxygen demand, and has an anti-ischemic effect on myocardial tissue [15]. A decrease in the contractility of smooth muscle myocytes in the walls of arterioles, including coronary ones, leads to vasodilation and increased coronary blood flow [16,17]. Magnesium deficiency is associated with increased levels of total cholesterol, low-density lipoproteins, triglycerides, decreased activity of lecithin-cholesterol-aminotransferase and lipoprotein lipase, and increased activity of HMC-CoA reductase [18–20]. Magnesium deficiency leads to a decrease in cell resistance to free radical processes in the body, which underlie oxidative stress and atherosclerosis - the main links in the development of CVD [2,12,20]. The prescription of magnesium-containing drugs is especially justified for long-term use of cardiac glycosides, which provoke hypokalemia and subsequent rhythm disturbances, including those associated with a deficiency of this ion in patients with chronic heart failure (CHF). Panangin contains potassium and magnesium ions and affects metabolic processes. The combination of potassium and magnesium ions in one preparation (Panangin) is justified by the fact that potassium deficiency in the body is often accompanied by magnesium deficiency and requires simultaneous correction of the content of both ions in the body. When correcting the levels of these cations, an additive effect is observed, in addition, potassium and magnesium reduce the toxicity of cardiac glycosides without affecting their positive inotropic effect. The concentration of magnesium (Mg++) in blood serum is 0.65–1.1 mmol/l, in erythrocytes – 1.65–2.55 mmol/l. The daily requirement of an adult for magnesium is 25–35 mmol/l [21]. Panangin (Gedeon Richter, Hungary) is available in film-coated tablets (or in dragee form), containing 0.158 g of potassium aspartate (36.2 mg of potassium) and 0.140 g of magnesium aspartate (11.8 mg of magnesium), and also in the form of an injection solution in 10 ml ampoules containing 0.452 g of potassium aspartate (103.3 mg of potassium ion) and 0.40 mg of magnesium aspartate (33.7 mg of magnesium). Indications for use of Panangin: arrhythmias caused by hypokalemia, hypokalemia due to taking saluretics. The drug is prescribed as part of complex therapy for heart failure, myocardial infarction, cardiac arrhythmias (mainly ventricular arrhythmias); to improve the tolerability of cardiac glycosides; for metabolic syndrome (obesity, hypertension, impaired glucose tolerance, type 2 diabetes), to compensate for the deficiency of potassium and magnesium when their content in the diet is reduced. Magnesium deficiency is associated with impaired glucose tolerance, and magnesium preparations can correct this condition. The drug is taken orally, 1-2 tablets. (dragée) 3 times/day. The maximum daily dose is 3 tablets. 3 times/day. Panangin should be taken after meals, because the acidic environment of the stomach contents reduces its effectiveness. The duration of therapy and the need for repeated courses are determined by the doctor individually. Panangin is also prescribed intravenously as a slow infusion to relieve an attack of arrhythmia in urgent situations [22,23]. Single dose - 1-2 ampoules (diluted in 50-100 ml of 5% glucose solution or isotonic sodium chloride solution), if necessary, repeated administration can be done after 4-6 hours. For slow intravenous administration, 1-2 ampoules of Panangin can be diluted (10 –20 ml) in 250–500 ml of the same solutions and injected dropwise. For example, a solution of potassium and magnesium aspartate (aspartate) was successfully used to prevent atrial fibrillation after coronary artery bypass surgery [24]. Aspartic acid transports magnesium ion across the cell membrane and promotes its absorption. Panangin does not have a cumulative effect and has a limited list of relative contraindications for use: hyperkalemia, acute or chronic renal failure (oliguria, anuria), heart rhythm disturbances in combination with degree II-III atrioventricular block, acute metabolic acidosis, hypovolemia (dehydration), Addison's disease, individual hypersensitivity to the components of the drug. A meta-analysis of 19 studies (including 586 people, 412 of them with hypertension) showed a relationship between the severity of the hypotensive effect and the duration of potassium supplementation. An average reduction in blood pressure of 5.9/3.4 mmHg was demonstrated. when using tableted potassium preparations [9]. During long-term observation (on average 6.7 years) of 7563 patients with hypertension, of which 1679 received diuretics, it was noted that the resulting hypokalemia (potassium concentration less than 3.5 mmol/l) was accompanied by an increase in the incidence of cardiovascular complications [10]. It is advisable to assess changes in the concentration of potassium in the blood in parallel with the quantitative assessment of magnesium indicators, because it is an important component for the absorption of potassium and ensuring its optimal intracellular level. Combined potassium and magnesium deficiency can lead to hypokalemia that is resistant to treatment if magnesium deficiency is not simultaneously corrected [12]. It is believed that magnesium ions inhibit the activity of the renin-angiotensin-aldosterone system and, with their deficiency, more favorable conditions are created for systemic vasoconstriction. When Panangin is used simultaneously with potassium-sparing diuretics and ACE inhibitors, the risk of developing hyperkalemia increases (the level of potassium in plasma should be monitored). When using this drug, discomfort or burning in the stomach is possible in patients with hypoacid gastritis and cholecystitis. It is necessary to observe a three-hour interval between taking Panangin orally. With hypokalemia, nausea, vomiting, diarrhea, and paresthesia are possible. With hypermagnesemia, the following symptoms are observed: facial flushing, thirst, decreased blood pressure, hyporeflexia, respiratory depression, and convulsions [18]. Calcium supplements reduce the effect of magnesium supplements. Astringents and enveloping agents reduce the absorption of the drug in the gastrointestinal tract and reduce adverse reactions. Plasma magnesium levels below 0.76 mmol/l are considered a significant risk factor for stroke and myocardial infarction. The European Epidemiological Study on Cardiovascular Diseases identified hypomagnesemia as an important risk factor for death from stroke and CVD [25]. A recently completed study found a significant reduction in the risk of sudden cardiac death with increasing serum magnesium levels, independent of other factors such as hypertension, diabetes, potassium levels, heart rate, and a history of coronary artery disease. It has been established that low serum magnesium levels are an important predictor of sudden cardiac death (234 cases of sudden death were recorded in a cohort of 14,232 people aged 45–64 years (average follow-up 12 years) [8]. In relation to hypertension and coronary heart disease, a relationship was also previously established with serum magnesium concentration, rather than with its intake [12]. Thus, it is extremely important to compensate for potassium and magnesium deficiency in patients at risk of stroke, especially those with concomitant heart disease [26, 27]. Panangin, containing potassium aspartate and magnesium aspartate, improves metabolism in the myocardium, increases the tolerance of cardiac glycosides in patients with CHF, has antiarrhythmic activity and can be used for prophylactic purposes and in supportive combination therapy of patients with cardiovascular pathology. Literature 1. Iezhitsa IN, Spasov AA Potassium magnesium homeostasis: physiology, pathophysiology, clinical consequences of deficiency and pharmacological correction // Usp Fiziol Nauk. 2008. Vol. 39(1). R. 23–41. 2. Shilov A.M., Melnik M.V., Osiya A.O., Knyazeva S.A. Treatment of cardiovascular diseases in the practice of a primary care physician: the place of potassium and magnesium preparations (Panangin) // Russian Med. magazine. 2012. No. 3. pp. 102–106. 3. Weglicki WB, Mak Iu.T., Chmielinska JJ et al. The role of magnesium deficiency in cardiovascular and intestinal inflammation // Magnes Res. 2010. Vol. 23(4). R. 199–206. 4. 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