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The way to prevent recurrent myocardial infarction

The way to prevent recurrent myocardial infarction
IPC classes for russian patent The way to prevent recurrent myocardial infarction (RU 2180843):
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in which R1' has the abovementioned meaning and M represents a hydrogen atom or the radical R2' which has the values specified above for R2in which the possible reactive functions can be protected by a protective group, is subjected to reaction with the compound of the formula (VIII) defined above, to obtain a product of formula (X):
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in which R1', R2', R4' and Hal have the above values, which is subjected to the reaction of the exchange of the halogen-metal, then the reaction with the compound of the formula (XII):
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in which R9' matter referred to in paragraph 1 for R9where possible reaction ф�g/rupat4/200110/01/2174513-36t.gif" ALIGN="ABSMIDDLE">< / BR>
in which R1', R2', R4' and R9' have the above meanings and, if necessary, or interact product of formula (I2) with the compound of the formula (XV):
O=C=N-R6' (XV)
in which R6' matter referred to in paragraph 1 for R6in which the possible reactive functions can be protected by a protective group, to obtain a product of formula (I3):
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in which R1', R2', R4', R6' and R9' have the above meanings, or the product of formula (I2) is subjected to a saponification reaction with the product of formula (I4):
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in which R1', R2', R4' and R9' have the above meanings, is subjected to reaction with COCl2to obtain a product of formula (I5):
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in which R1', R4', R2and R3" have the above meanings; then the above products of formula I2, I3, I4, I5, I6, I7that are a product of the formula I, allocate or subjected, if necessary, one or more reactions of transformation to other products of the formula I, in any order:
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m) the transformation function sulfide, sulfoxide or sulfone function corresponding sulfoximine,
n) the transformation function oxo function of thioxo,
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in radical
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(57) Abstract:

The invention relates to medicine, particularly cardiology, and for the prevention of a second heart attack in people without hypertension. The essence of the method lies in the fact that at 16-18 days from the onset of myocardial infarction enter atenolol 12.5 mg in the morning and Enap 2.5 mg in the evening. In the second week, increase the dose of atenolol to 12.5 mg in the morning and in the evening, leaving the dose of Enap 2.5 mg in the evening. On the third week of atenolol continue to impose 12.5 mg in the morning and evening and Enap 2.5 mg in the morning and evening. In the absence of hypotension on a 4-5 week, increase the dose of atenolol to 25 mg in the morning and evening. therapy continued for two years with the regular a single dose of 125 mg of aspirin and extended-release nitrates in conventional dosages. The method improves the efficiency of prevention of recurrence of myocardial infarction. 4 C.p. f-crystals, 2 tab.

The invention relates to the field of medicine, particularly cardiology.

Coronary heart disease (CHD) is one of the most important medical and social problems of our time. In most economically developed countries, up to 40% of deaths are from coronary heart disease (Oganov, R., Maslennikova, I., 2000). The heart of michaelene. A particularly high risk of mortality and development of heart failure with repeated myocardial infarction. Therefore, prevention of recurrent myocardial infarction is the most important task of the medicine.

It is now established that the most effective drugs for the secondary prevention of CHD are beta-blockers (BAB) and disaggregants, in particular acetylsalicylic acid (aspirin) or ticlopidine (ticlid). Antiischemic and antiarrhythmic properties BAB serve as the basis for their long-term assignment with the preventive purpose in patients after myocardial infarction.

There is a method of secondary prevention of coronary heart disease using beta-blockers. Aggregate data analysis of 17 controlled studies were conducted by S. Yusuf et al., 1985 (Yusuf, S., Peto R, Lewis j, Collins R, Sleight P. Beta blockade during and after myocardial infarction: an overwew of the randomised. //Prog. Cardiovasc. Dis. 1985, v. 27, p. 335-371) and Gottlieb S. S. et al., 1998 (S. S. Gottlieb, G., McCarter, R. J., Vogel R. A. Effect of beta-blockade on mortality among high-risk and low-risk patients after myocardial infarction. //New England Journal of Medicine, 1998, v. 339, 8, p. 489-496), where they showed that long-term therapy BAB patients after myocardial infarction, reduce the overall mortality of 22% of sudden deaths by 32% and the frequency of non-fatal re is RDA (Q-Abrazame heart attack). In all these studies used high doses of beta-blockers: propranolol daily dose of 180-240 mg, atenolol 100-200 mg etc.

The disadvantage of this method is that such high doses give a rather high percentage of complications (from 16% to 42%), which limits the widespread use of beta-blockers in clinical practice. In addition, their effectiveness is still not more than 27%. There is ongoing research aimed at improving the efficiency of the BAB.

In the last 10 years there has been active research on the efficiency of the inhibitors angiotenzinovymi enzyme (ACE) inhibitors at various cardiovascular diseases. However, most research focusing on the effectiveness of ACE inhibitors in hypertension and heart failure. There are few works that assess the effectiveness of ACE inhibitors in acute myocardial infarction (SAVE, 1992, AJRE, 1994) and single-evaluating their effectiveness in secondary prevention of coronary heart disease (CONSENSUS II, SOLVD, 1992). In all the above studies assessed mainly the effect of ACE inhibitors on mortality and prevention of heart failure.

The world is April. In the research CONSENSUS II, 1992 (Swedberg K., Held p, Kjekshus J et al. Effects of the early administration of enalapril on mortality in patients with acute myocardial infarction. Result of the Cooperative New Scandinavian Enalapril Survival Study II. //New Engl. J. Med, 1992, v. 327, p. 678-684) and SOLVD, 1992 (Yusuf, S., Pepine C., C. Garces et al. Effect of enalapril on myocardial infarction and unstable angina in patients with low ejection fraction. //Lancet, 1992, v. 340, p. 1173-1178) enalapril was used in increasing the dosage from 2.5 to 20 mg 2 times a day. It was found that enalapril decreases the incidence of repeated heart attacks, episodes of unstable angina and reduces the need for carrying out operations of myocardial revascularization. It was proved that ACE inhibitors are particularly effective in patients with systolic dysfunction of the left ventricle is paced after myocardial infarction, ejection fraction 40% or less, and in patients with arterial hypertension.

The disadvantages of this method is that in patients with preserved ejection fraction monotherapy with enalapril were ineffective. In patients without hypertension, the use of enalapril was limited by the frequency of complications and, in particular, arterial hypotension and tachycardia. This is due to the fact that this study used high doses of enalapril 10 to 20 mg 2 times in subfora ACE and beta-blocker is relatively rare and mainly in the treatment of hypertension. However, as stated at the meeting of the Moscow scientific society of General practitioners (November 1999), it can be a very useful combination (Cardiology, 2000, 6, S. 91-104). We have not found studies where would this combination was used for secondary prevention of CHD, especially without concomitant hypertension.

The objective of the invention is to increase the effectiveness of secondary prevention of coronary heart disease and reduce complications after undergoing a primary krupnovesovogo myocardial infarction without concomitant arterial hypertension using joint application cardioselektivee beta-blocker atenolol and the ACE inhibitor of Enap in small doses.

This object is achieved in that at 16-18 days from the onset of myocardial infarction patients without concomitant arterial hypertension was prescribed atenolol 12.5 mg in the morning and Enap 2.5 mg in the evening. On the 2nd week increased the dose of atenolol to 12.5 mg in the morning and in the evening, leaving the dose of Enap 2.5 mg in the evening. On the 3rd week atenolol continued to take 12.5 mg in the morning and evening and Enap 2.5 mg in the morning and evening. In the absence of hypotension on a 4-5 week increased the dose of atenolol to 25 mg in the morning and evening and EN is but momentary and long-acting nitrates in conventional dosages.

The novelty of the method:
1. The proposed method is based on the combined use of atenolol and Enap in patients undergoing primary krupnooptovyj (Q-wave) myocardial infarction with preserved ejection fraction (>45%).

2. This allows the use of both drugs in small doses, increasing the effectiveness of secondary prevention and reducing the number of side effects.

3. The simultaneous use of two drugs at low doses can reduce the number of side effects and, in particular, hypotonia and allows the use of this method of treatment in patients without concomitant arterial hypertension.

The method consists in the following. Patients undergoing primary krupnooptovyj myocardial infarction, and in the absence of hypertension at 16-18 days of a heart attack is assigned to combination therapy cardioselektivee beta-blocker-atenolol and ACE inhibitor with enalapril (for example, Enap company KRKA, Slovenia). Treatment start with the minimum dose. Atenolol is administered in a dose of 12.5 mg in the morning, enalapril (Enap) 2.5 mg in the evening. If tolerated treatment and no side effects as hypotension next week dose atenolol prolonged considering the dose of enalapril 2.5 mg 2 times a day (morning and evening), dose atenolol remains 12.5 mg 2 times a day. In the absence of hypotension on a 4-5 week, increase the dose of atenolol to 25 mg 2 times a day - morning and evening dose of enalapril (2.5 mg 2 times a day). This therapy patients receive within 2 years, continuing to take from the first day of disease of heart attack the aspirin 125 mg once daily and, if necessary, prolonged nitrates in accepted dosages, such as kardiket 40 mg 2 times a day. Gradually increasing doses of the drugs helped to avoid the complications of therapy in the form of hypotension, which was observed only in 2,08% of patients.

We conducted a study which assessed the efficacy of combination therapy with atenolol and amlodipine with monotherapy one atenolol.

Materials and methods.

The study included 66 men aged 42-60 years), who underwent primary krupnooptovyj myocardial infarction (myocardial infarction Q-wave). None of them had concomitant hypertension. Randomly patients were divided into 2 identical groups. Cm. table. 1.

In the 1st group of 36 patients within 2 years were treated by the proposed method. At 16-18 days of myocardial infarction cured to the Slovenia) 2.5 mg once in the evening. With good endurance next week dose of atenolol was increased to 12.5 mg 2 times a day, the dose of Enap remained 2.5 mg once in the evening. After another week had increased the dose of Enap to 2.5 mg 2 times a day (morning and evening) dose atenolol remained 12.5 mg 2 times a day.

In the 2nd control group of 30 patients within 2 years received cardioselektivee beta-blocker atenolol. 12-16 days of myocardial infarction to treatment with nitrates and acetylsalicylic acid were added to atenolol. Treatment was started with a dose of 12.5 mg once daily, with a gradual increase in the dose of 12.5 mg every 3 days, if tolerated. The average daily dose of atenolol in the group amounted to 66,93,4 mg, which was significantly more than in the 1st group, p<0,001.

Results.

Within 1 year in each group died, one patient that was 2,82,0% in the 1st and 3,32,2% in the 2nd, the difference unreliable. Re nonfatal myocardial infarction occurred in 1-St group 1 (2,8+2,0%) patient in the 2 nd - 3 (10,0+3.7 percent). the th nonfatal myocardial infarction occurred in 1-St group 1 (2,82,0%) patients, which is somewhat lower than in the 2 nd - 2 (6,6+3,1%), the difference unreliable.

Thus, within 2 years of deaths observed in the 1-St group 2 (5,62,8%) patients in the 2-nd also 2 (6,73,1%). Re myocardial infarction within 2 years evolved into the 1st group 2 (5,62,8%) patients, which was significantly lower than in the 2 nd - 5 (16,74,5%), p<0,05. In the 2nd group for 2 years in one patient developed tromboliticaskie stroke, if there are none in the first. Summarizes adverse outcomes (death+re myocardial infarction+strokes) installed in the 1st group 4 (11,1+3,9%) patients, which was significantly lower than in the 2nd - 8 (26,7+5,4%), p<0,01 (t=2,4).

Improvement in clinical status in the 1st group was noted in 30 (83,36,2%) patients, which was significantly higher than in the 2nd - 16 (53,06,1%), p<0,001 (t=3,5). Cm. table. 2.

Complications of therapy reliably rarely observed in the group receiving combination therapy with atenolol and Enap than in the group receiving monotherapy with atenolol: the 1st group - 2 (5,62,8%), in the 2nd - 6 (20,0+8,1%) patients, respectively, p<0,01 (t=2,6). In the 1st group the main complication was hypotension, which disappeared after dose reduction of Enap. In the 2nd group, complications were the following: hypotension 2, marked sinus has reditribute cancel atenolol.

The conclusions. Combination therapy with atenolol and enalapril patients undergoing krupnooptovyj myocardial infarction, without concomitant arterial hypertension can significantly reduce the number of adverse outcomes, especially repeated heart attacks and complications versus monotherapy atenololum in large doses.

Example.

Patient S. 54 years 26.10.97 underwent primary krupnooptovyj myocardial infarction in the Antero-septal region, the apex of the left ventricle. With 26.10 on 14.11.97 inpatient treatment in the cardiology Department of hospital 29. Before discharge from hospital the patient had a rare strokes with physical loads up to 2 times a week, stopping by the nitrosorbid. Physical activity 1.0 km/day. Tolerance to physical loads according to the VEM from 13.11.97 - 450 KGM. Termination criteria of ischemic samples. On ECHOCARDIOGRAPHY: CSR - 78,0 ml, CDALE - 146 ml, PE - 47%. The patient received treatment cardice-40 1 tab. 2 times a day and aspirin 250 mg once. The patient was discharged 14.11.97 to outpatient treatment in the cardiology clinic. In the cardiology clinic with 15.11.97 in treatment were added atenolol 12.5 mg in the morning and Enap 2.5 mg at night. Tolerability was good. Next week is 5 mg 2 times a day. 4 week outpatient treatment dose atenolol increased to 25 mg 2 times a day, Enap left in the dose of 2.5 mg 2 times a day. Tolerability of treatment remained good. HELL was within 110/80 to 120/80 mm RT. Art. The patient indicated the disappearance of angina, increased tolerance to physical loads up to 750 KGM, increasing physical activity (walks up to 4.5 km/day). On day 113 drawn to work in their profession mechanic. Within 2 years continued to take atenolol 25 mg 2 times a day, Enap 2.5 mg in the morning and in the evening, at night, aspirin 125 mg once. Angina and shortness of breath no. He walks without restrictions. The exercise tolerance after 1 year 900 KGM 2 years 750 KGM. Termination criteria sample neishemicescoy, in both cases, the fatigue. On ECHOCARDIOGRAPHY in 2 years CSR to 61.2 ml, CDALE - 189 ml, ejection fraction increased to 67.6%. Within 2 years tolerability remained good.

1. The way to prevent recurrent myocardial infarction in patients without hypertension, including therapy cardioselektivee beta-blocker, characterized in that it further prescribed ACE inhibitor, with treatment beginning at 16-18 days of myocardial infarction and spend 3 this is the ATA in the conventional dosage.

2. The method according to p. 1, characterized in that as cardioselektivee beta-blocker use atenolol.

3. The method according to p. 1, characterized in that as the ACE inhibitor use enalapril.

4. The method according to p. 1, characterized in that, in the absence of hypotension during the first week prescribed 12.5 mg atenolol in the morning and 2.5 mg of amlodipine in the evening, during the second week appoint 12.5 mg atenolol in the morning and evening and 2.5 mg of amlodipine in the evening during the third week atenolol 12.5 mg and amlodipine 2.5 mg in the morning and evening and continue treatment for two years atenolol 25 mg morning and evening, enalapril 2.5 mg in the morning and also evening.

5. The method according to p. 1, characterized in that, with the development of hypotension at any stage of treatment prescribed atenolol 12.5 and enalapril 2.5 mg for the duration of treatment.

 

 

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