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About authors:
Fedorovskaya Nadezhda Stanislavovna, PhD (medical science), Associate Professor of the Department of pathological anatomy; tel.: +79128245918; e-mail: [email protected]
Petrov Semen Venediktovich, MD, Professor, Professor of the Department of general pathology; tel.: +79172737581; e-mail: [email protected]
Zaitsev Valery Borisovich, MD, Professor, Professor of the Department of histology, embryology and cytology; tel.: +78332678801; e-mail: [email protected]
© Group of authors, 2019 UDC 615.272.4
DOI - https://doi.org/10.14300/mnnc.2019.14107 ISSN - 2073-8137
THE LIPID-LOWERING TREATMENT AFTER ACUTE CORONARY SYNDROME IN THE REAL CLINICAL PRACTICE: POSSIBLE ROLE OF THE PHARMACOGENETIC INTERACTIONS
Brazhnik V. A. 1 2, Minushkina L. O. 2, Rogozhina A. A. 2, Averkova A. O. 3, Zubova E. A. \ Koroleva O. S. 2, Chichkova M. A. 4, Khasanov N. R. 5, Kosmacheva E. D. 6, Boyeva O. I. 7, Speshilov G. I. 8 9, Guliev R. R. 10, Zateyshchikov D. A. 1 2
1 City clinical hospital № 51, Moscow, Russian Federation
2 Central State Medical Academy, Moscow, Russian Federation
3 M. V. Lomonosov Moscow State University, Russian Federation
4 City clinical hospital № 17, Moscow, Russian Federation
5 Kazan State Medical University, Russian Federation
6 Kuban State Medical University, Krasnodar, Russian Federation
7 Stavropol State Medical University, Russian Federation
8 A. A. Kharkevich Institute for Information Transmission Problems of Russian Academy of Sciences, Moscow, Russian Federation
9 «Ridsens» Ltd, Troitsk, Moscow, Russian Federation
10 N. M. Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences, Moscow, Russian Federation
ГИПОЛИПИДЕМИЧЕСКАЯ ТЕРАПИЯ У БОЛЬНЫХ С ОСТРЫМ КОРОНАРНЫМ СИНДРОМОМ В РЕАЛЬНОЙ КЛИНИЧЕСКОЙ ПРАКТИКЕ: ВОЗМОЖНАЯ РОЛЬ ФАРМАКОГЕНЕТИЧЕСКИХ ВЗАИМОДЕЙСТВИЙ
В. А. Бражник 1 2, Л. О. Минушкина 2, А. А. Рогожина 1 2, А. О. Аверкова 3, Е. А. Зубова 1, О. С. Королева 2, М. А. Чичкова 2' 4, Н. Р. Хасанов 5, Е. Д. Космачева 6, О. И. Боева 7, Г. И. Спешилов 8' 9, Р. Р. Гулиев 10, Д. А. Затейщиков 1 2
1 Городская клиническая больница № 51, Москва, Российская Федерация
2 Центральная государственная медицинская академия, Москва, Российская Федерация
3 Московский государственный университет им. М. В. Ломоносова, Российская Федерация
4 Городская клиническая больница № 17, Москва, Российская Федерация
5 Казанский государственный медицинский университет, Российская Федерация
6 Кубанский государственный медицинский университет, Краснодар, Российская Федерация
7 Ставропольский государственный медицинский университет, Российская Федерация
8 Институт проблем передачи информации им. А. А. Харкевича Российской академии наук, Москва, Российская Федерация
9 ООО «Ридсенс», Троицк, Москва, Российская Федерация
10 Институт биохимической физики им. Н. М. Эмануэля Российской академии наук, Москва, Российская Федерация
The study aimed to assess the possibility of individualizing lipid-lowering therapy in patients after acute coronary syndrome (ACS). The study included 1408 patients from the ORACUL II study, who has undergone ACS for the first time (60.5 % of men, average age 65.18±12.81 years), discharged from the hospital. Statins were prescribed to 1315 (93.4 %) patients at
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2019. Vоl. 14. Iss. 3
discharge from the hospital. During the first year of observation 778 (55.2 %) patients use statins regularly, 394 (27.9 %) had low adherence to treatment, 236 (16.7 %) refused statins in a month after discharge. Among patients highly adhere to statin treatment, compared with patients without statins or having poor adherence to lipid-lowering therapy, the lower frequency of coronary events (8.1 % and 19.0 % of patients, respectively, p<0.001) was noted and a lower average expected time before coronary outcome (805.9±9.92 vs. 751.3±10.61 days, p=0.0O2). A significant decrease of statins effect on cardiovascular risk was observed in carriers of A allele of ANXA2 gene, which initially had a higher level of low-density lipoprotein cholesterol than patients without A allele in the genotype (4.18±2.602 mmol/L vs. 3.12±1.197 mmol/L, p=0.017).
Keywords: acute coronary syndrome, statins, adherence, gene ANXA2
Исследование посвящено оценке возможности персонификации гиполипидемической терапии статинами у больных, перенесших острый коронарный синдром (ОКС). В исследование включены 1408 больных с ОКС из исследования ОРАКУЛ II (60,5 % мужчин, средний возраст 65,18±12,81 лет), выписанных из стационара после первичной госпитализации. При выписке из стационара статины были рекомендованы 1315 (93,4 %) больным. По данным первого года наблюдения 778 (55,2 %) пациентов лечились регулярно, 394 (27,9 %) имели низкую приверженность лечению, 236 (16,7 %) прекратили прием препаратов через месяц после выписки. Среди больных, получавших ста-тины, было достоверно меньше лиц, перенесших коронарные события, по сравнению с больными, не получавшими статины или имевшими плохую приверженность лечению (8,1 и 19,0 % больных соответственно, р<0,001). В анализе Каплана - Мейера среднее ожидаемое время до развития коронарного исхода у лиц на статинотерапии и не принимавших статины составило 805,9±9,92 и 751,3±10,61 дней соответственно (р=0,002). Существенное снижение эффективности статинов отмечено у больных - носителей аллеля А гена ANXA2, имевших исходно более высокий уровень холестерина липопротеинов низкой плотности (4,18±2,602 и 3,12±1,197 ммоль/л, р=0,017).
Ключевые слова: острый коронарный синдром, статины, приверженность, ген ANXA2
For citation: Brazhnik V. A., Minushkina L. O., Rogozhina A. A., Averkova A. O., Zubova E. A., Koroleva O. S., Chichko-va M. A., Khasanov N. R., Kosmacheva E. D., Boyeva O. I., Speshilov G. I., Guliev R. R., Zateyshchikov D. A. THE LIPID-LO-WERING TREATMENT AFTER ACUTE CORONARY SYNDROME IN THE REAL CLINICAL PRACTICE: POSSIBLE ROLE OF THE PHARMACOGENETIC INTERACTIONS. Medical News of North caucasus. 2019;14(3):442-447. DOI - https://doi.org/10.14300/mnnc.2019.14107
Для цитирования: Бражник В. А., Минушкина Л. О., Рогожина А. А., Аверкова А. О., Зубова Е. А., Королева О. С., Чичкова М. А., Хасанов Н. Р., Космачесва Е. Д., Боева О. И., Спешилов Г. И., Гулиев Р. Р., Затейщиков Д. А. ГИПОЛИПИ-ДЕМИЧЕСКАЯ ТЕРАПИЯ У БОЛЬНЫХ С ОСТРЫМ КОРОНАРНЫМ СИНДРОМОМ В РЕАЛЬНОЙ КЛИНИЧЕСКОЙ ПРАКТИКЕ: ВОЗМОЖНАЯ РОЛЬ ФАРМАКОГЕНЕТИЧЕСКИХ ВЗАИМОДЕЙСТВИЙ. Медицинский вестник Северного Кавказа. 2019;14(3):442-447. DOI - https://doi.org/10.14300/mnnc.2019.14107
ACS - acute coronary syndrome
AH - arterial hypertension
ANXA2 - annexin A2
CAD - coronary artery disease
CV - cardiovascular
GFR - glomerular filtration rate
HDL-C - high-density lipoproteins cholesterol
Lipid-lowering treatment is an essential component of acute coronary syndrome (ACS) management. In a meta-analysis of 26 RCTs of a statin vs. control or a more vs. less intensive statin regimen, for each 1.0 mmol/L reduction in low-density lipoprotein cholesterol (LDL-C) statin/more statin reduced major cardiovascular (CV) events (myocardial infarction (MI), coronary artery disease (CAD) death, any stroke or coronary revascularization) by approximately 22 %. The proportional effects (per mmol/L reduction in LDL-C) on major vascular events were similar in all subgroups examined, so the absolute risk reduction was proportional to the absolute baseline risk. The relative benefits were half as large in the first year as compared to subsequent years. Statins are recommended to all patients with previous ACS, regardless of the initial (baseline) LDL-C level [1].
New dyslipidemia guidelines from the European Society of Cardiology (ESC) and European Atherosclerosis Society (EAS) advocate a «lower is a better» and risk-based approach for LDL cholesterol, with a stronger emphasis on lipid-lowering than specified before [2]. According to this document, in secondary prevention for patients after ACS being at very high CV risk, an LDL-C reduction of >50 % of baseline and LDL-C goal of <1.4 mmol/L (<55 mg/dL) are recommended [2]. During the present study period the LDL-C target of <1.8 mmol/L (<70 mg/dL) was approved.
HF - heart failure
LDL - low-density lipoproteins
LDL-C - low-density lipoproteins cholesterol
MI - myocardial infarction
PCI - percutaneous coronary intervention
PCSK9 - proprotein convertase subtilisin/kexin type 9
PE - pulmonary embolism
In real practice, only about 20 % of patients treated with lipid-lowering drugs reach the target level of LDL-C, which emphasizes the need for some patients to have lipid-lowering treatment that is more active [3].
Treatment problems include low adherence to statins, the use of insufficient doses, and the risks associated with adverse effects of statins in some clinical conditions of the patients.
Recently, a new class of drugs that affect the level of blood lipids has become available - antibodies to the proprotein convertase subtilisin/kexin type 9 (PCSK9) - enzyme, involved in the control of the LDL receptor and lipid metabolism in general [4]. Preliminary data from phase 3 trials suggested a reduction of CV events in line with LDL-C reduction achieved [2]. However, because of the cost of the treatments and limited data on long-term safety, these drugs are likely to be considered cost-effective only in those patients at very high risk of atherosclerotic cardiovascular disease. Moreover, their use may not be possible in some countries with limited healthcare resources, making us look for additional options to optimize lipid-lowering treatment.
Data on genetic variants associated with the patho-genesis of atherosclerosis and its complications could help to personify cardiovascular risks and treatment. One of the recently discovered genetic markers is polymorphism rs17845226 of the type 2 annexin (ANXA2) gene. Annexin A2 is an endogenous inhibitor of PCSK9, which
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binds the R1 domain of PCSK9, changing the enzyme conformation and making it unable to trigger LDL receptor degradation, and therefore affects the level of LDL-C
[5]. These effects allow to considering the ANXA2 gene as a candidate for analysis of statins pharmacogenetics.
The aim of the study was to evaluate the possibility of personification of the lipid-lowering treatment with statins in patients after acute coronary syndrome based on clinical and genetic data.
Material and Methods. The data from the observational, initiative, multi-center registry ORACLE II (registration number NCT04068909 at ClinicalTrials.gov), designed and organized by the Department of Internal Diseases, Cardiology and Functional Diagnostics of the Central State Medical Academy of the Department of Presidential Affairs were used. The patients with ACS having indications for percutaneous coronary intervention (PCI) during hospitalization were enrolled in the study, regardless of whether the invasive treatment was performed or not. The inclusion criteria have been described in detail in previous publications
[6]. From 2014 to 2017, 1655 patients from four centers in Moscow, Astrakhan, Krasnodar, and Kazan were included.
This article presents the analysis of data from 1408 patients discharged from the hospital after the primary hospitalization. 909 (64.5 %) patients had ACS without ST-segment elevation, 499 (35.5 %) - ACS with ST-segment elevation. The examined group consisted of 556 (39.5 %) women and 852 (60.5 %) men, the average age - 65.2±12.81 years. 1235 (87.8 %) patients suffered from arterial hypertension (AH), 1039 (73.8 %) - from coronary artery disease. 438 (31.1 %) patients had a history of myocardial infarction (MI). 845 (60.0 %) had undergone PCI during the index episode of ACS, 183 (13 %) had undergone it previously. 698 (49.6 %) patients suffered from heart failure (HF), 320 (22.7 %) patients - from diabetes mellitus. An aortic stenosis was detected in 76 (5.4 %) patients, GFR<30 ml/ min/1.73 m2 - in 138 (9.8 %) patients. 261 (18.5 %) patients used statins before the index hospitalization.
Adverse outcomes and treatment were identified during the follow-up examination or through phone contact on 25, 90, 180, and 360 days after discharge from the hospital. The primary endpoint was death from all causes. Secondary endpoints included coronary outcomes (death from CAD or repeated ACS), new cases of stroke, complicated atherosclerosis, pulmonary embolism, bleeding, repeated coronary angiography and revascularization, hospitalization due to decompensation of heart failure.
When analyzing the therapy, the drugs are taken, and their dosage was recorded. If the patient noted the regular intake of drugs not at all visits or noted that he took the drug from time to time («on-demand»), adherence to treatment was considered low.
According to the classification of the American College of Cardiology, atorvastatin 40-80 mg and rosuvas-tatin 20-40 mg per day was considered a highly concentrated dose, atorvastatin 10-20 mg and rosuvastatin 5-10 mg per day were considered a moderately intensive dose, simvastatin 10-20-40 mg per day was considered a low-intensive dose [7]. Also, atorvastatin 5 mg/day was considered a low-intensity dose in this study.
The following reference values of biochemical blood markers were used during hospitalization: creatinine 53115 |mol/L, total cholesterol 2.0-5.2 mmol/L, LDL-C up to 3.3 mmol/L, HDL-C 0.91-1.56 mmol/L, triglycerides 0.50-1.70 mmol/L. If the lipid profile was examined against the background of lipid-lowering treatment, the approach described by Besseling et al. was used to assess the level of LDL-C [8]. Glomerular filtration rate (GFR) was calculated using the MDRD formula.
To study the ANXA2 rs17845226 gene polymorphism, the ready-made qPCRmix-HS SYBR reaction mixture designed for real-time PCR with the intercalating dye SYBR Green I (Evrogen CJSC, Moscow) was used. Oligonucleotide primers were synthesized by «Evrogen» (Moscow). Genomic DNA was isolated from blood by extraction with a mixture of phenol and chloroform after incubation of blood samples with proteinase K in the presence of 0.1 % sodium dodecyl sulfate. Alleles of the polymorphic marker were identified using allele-specific PcR on a real-time CFX96 C1000 Touch thermocycler (Bio-Rad, USA) in 25 |l of the reaction mixture: qPCRmix-HS SYBR reaction mixture, 2.5 pmol of each primer, 25 ng of genomic DNA.
Amplification conditions for the DNA fragment: preliminary denaturation 95 °C/1 min, 95 °C/30 s, 59 °C/30 s, 72 °C/30 s - 35 cycles. The composition of the primers: direct (A) TGTCTTCAATAGGCCCAAAATCAA, direct (C) TGTCTTCAATAGGCCCAAAATCAC, reverse CCGGAGTG-GTCAAAGACTCA.
Results and Discussion. Statins at discharge from the hospital were prescribed to 1315 (93.4 %) patients. In a month after ACS, 91.6 % of patients used lipid-low-ering drugs, 4 % of patients did not take statins regularly. After a year of observation, 778 (55.2 %) patients reported taking statins daily, 394 (27.9 %) reported taking statins, not at all visits - low adherence, 236 (16.7 %) never use lipid-lowering drugs after the first visit.
Atorvastatin was the most often prescribed statin, rosuvastatin, and simvastatin were less frequent. At the stage of outpatient observation, two patients indicated fluvastatin and lovastatin among the drugs taken after 90 and 180 days, respectively.
Atorvastatin was prescribed mainly in doses of moderate-intensity - 10-20 mg (Table 1). Upon discharge from the hospital, rosuvastatin was recommended primarily in high doses, but at the outpatient stage, patients were often treated in the moderate-intensive (5-10 mg) regimen.
Table 1
Statins dose during the observation period
The drug name High dose Moderate dose Low dose
At discharge from the hospital
Atorvastatin (S9.2 %) 2G.G % 79.9 % G.l %
Rosuvastatin (S.S %) 6G.4 % 39.6 %
Simvastatin (2.G %) - S4.6 % l5.4 %
After a month of observation
Atorvastatin (S5.3.9 %) l6.6 % S3.l % G.3 %
Rosuvastatin (l2.9 %) 32.2 % 67.S %
Simvastatin (l.S %) - S2.4 % l7.6 %
After a year of observation
Atorvastatin (7S.2 %) l6.l % S3 % G.9 %
Rosuvastatin (lS.4 %) 32.3 % 67.7 %
Simvastatin (3.4 %) - S7.l % l9.4 %
Notes. Doses of high intensity were considered atorvastatin 40-80 mg/day, rosuvastatin 20-40 mg/day, moderate intensity - atorvastatin 10-20 mg/day, rosuvastatin 5-10 mg/ day, simvastatin 20-40 mg/day, low intensity - simvastatin 10 mg/day, atorvastatin 5 mg/day.
A few patients received simvastatin in doses of mainly moderate intensity.
Among patients receiving statins, there were significantly fewer coronary outcomes (coronary death and recurrent ACS) compared with patients who did not receive statins or had poor adherence to treatment
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(Table 2). The frequency of death from all causes in the studied groups did not differ significantly. In the group of high adherence to lipid-lowering treatment, there was a significantly higher frequency of death from other causes - cancer, pneumonia, and complications of diabetes. In the group of low adherence to treatment patients were
comparatively older (average age 67.3±13.06 years and 63.4+12.6 years, respectively, p=0.009), there were fewer men (55.3 % and 65.6 %, respectively, p=0.028), more patients with diabetes (26.3 % and 18.9 %, p=0.034), PCI was less likely due to an index event (46.3 % and 66.5 %, respectively, p<0.001).
Table 2
Adverse outcomes in patients with high and low statin adherence
Outcomes Total (n = 1408) Regular use of statin (n=778) Low adherence/ no statins (n=630) P Regular use of statin (n=461) Low adherence/ no statins (n=461) P
No randomization After randomization
All cause death 124 (8.8 %) 64 (8.2 %) 60 (9.5 %) 0.393 47 (10.2 %) 57 (12.3 %) 0.313
Coronary death 64 (4.5 %) 23(2.95 %) 41 (6.5 %) 0.002 20 (4.33 %) 39 (8.45 %) 0.0106
Fatal stroke 5 (0.35 %) 3 (0.38 %) 2 (0.31 %) 0.797 3 (0.65 %) 2 (0.43 %) 0.648
HF death 16 (1.1 %) 10 (1.3 %) 6 (0.95 %) 0.558 8 (1.7 %) 6 (1.3 %) 0.617
PE death 4 (0.28 %) 2 (0.25 %) 2 (0.31 %) 0.833 0 (0 %) 2 (0.43 %) 0.158
Other causes death 35 (2.48 %) 26(3.34 %) 9 (1.4 %) 0.022 16 (3.68 %) 8 (1.73 %) 0.068
Recurrent ACS 119 (8.4 %) 40(5.14 %) 79(12.5 %) <0.001 28(6.1 %) 51 (11.4 %) <0.0044
All coronary outcomes 183 (12.9 %) 63 (8.1 %) 120 (19.0 %) <0.001 48 (10.4 %) 90 (19.5 %) <0.001
Non-fatal stroke 25 (1.8 %) 10 (1.3 %) 15 (2.38 %) 0.130 9 (1.95 %) 12 (2.60 %) 0.503
FH hospitalization 41 (2.91 %) 21 (2.69 %) 20 (3.17 %) 0.598 15 (3.25 %) 16 (3.47 %) 0.853
Complicated atherosclerosis 11 (0.78 %) 8 (1.02 %) 3 (0.47 %) 0.251 6 (1.3 %) 3 (0.65 %) 0.315
Given the significant differences in the essential clinical parameters of patients with high and low adherence to treatment, the above groups were randomized according to these parameters. Two groups of 461 patients comparable by gender, age, diabetes mellitus, and frequency of PCI were obtained. The analysis of the rate of the adverse outcomes in these groups is in Table 2.
In the Kaplan - Meier analysis, the average expected time to the development of coronary outcome was 805.9+9.92 days in patients highly adhered to treatment, in patients not using statins - 751.3+10.61 days (p=0.002) (Fig. 1).
Fig. 1. The risk of adverse coronary outcomes depending on the lipid-lowering treatment in patients after ACS
The preventive effect of statins regarding the frequency of coronary outcomes was studied in different clinical groups. In the group with normal GFR statins were quite effective, while in patients with GFR<30 ml/ min/1.73 m2, lipid-lowering treatment failed to prevent coronary events, as well as in patients with aortic stenosis and carriers of A allele of the ANXA2 gene (Fig. 2).
Fig. 2. Reduction of the adverse coronary outcomes risks after ACS on the background of continuous statin therapy in the selected clinical groups
The LDL-C level during the index hospitalization was significantly higher in carriers of the AC and AA genotypes of the ANXA2 gene (3.66+1.649 mmol/L and 4.18+2.602 mmol/L, respectively), than in carriers of the CC genotype (3.12+1.197 mmol/L, p=0.017), while the level of total cholesterol, triglycerides, and HDL-C did not differ in the compared groups. A dose of statins prescribed to patients with different genotypes of the ANXA2 gene did not differ significantly. For example, patients with CC genotype received atorvastatin 23.07+10.43 mg per day, carriers of the AC genotype - 21.67+8.04 mg, AA genotype - 18.33+4.08 mg (p=0.311). Similar data were obtained with rosuvastatin and simvastatin.
Among the carriers of A allele of ANXA2 gene, patients without lipid-lowering treatment tend to dominate. Moreover, these patients have significantly higher levels of LDL-C.
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The main lipid-lowering drugs for CAD are statins. One of the main problems is the low adherence to statins [9], resulting in a high residual risk of CAD complications. In the Swedish register of ACS (49.857 participants) 20012012, 20.2 % of patients used high doses of statins after ACS, while 42.7 % did not take lipid-lowering treatment after discharge from the hospital. Moreover, the statins, at any dose, reduced the risk of adverse events [10].
In New Zealand, registry statins were recommended at discharge to 95 % of patients with ACS. 92 % of patients continued with statins for three months, 75 % - for a year, 67 % - for three years. Among the main predictors for low adherence to treatment were young age and lack of lipid-lowering treatment before index hospitalization [11]. In the Chinese registers CPACS-1 and CPACS-2 only 72 % of patients continue with statins in 6 months after ACS. Moreover, the relative risk of adverse coronary events was higher by 27 % with low adherence to treatment regardless of the other risk factors [12]. In the Russian registry of ACS - RECORD-3, 84 % of patients used statins at discharge, 66 % - 6 months and 69 % -12 months after discharge from the hospital [13].
In our study, lipid-lowering treatment was recommended for more than 90 % of patients at discharge, while in a year only 55 % of patients regularly used statins, about 27 % did it occasionally (low adherence), and about 17 % did not use statins at all.
In addition, with the recommended intensive treatment with high doses of statins after ACS, insufficient doses of drugs are often prescribed in real practice, resulting in a small number of those patients who achieved target LDL-C levels and decreased the prophylactic effect of treatment. In the sizeable Chinese registry, which included more than 80,000 patients with acute coronary syndrome, 90 % of patients received moderate dose of statins after ACS and revascularization, while only 36.1 % reached the target LDL-C levels [14]. In the Polish registry of ACS - TERCET (Hyperlipidaemia Therapy in tERtiary Cardiological cEnTer), 91.8 % of patients use statins at discharge from the hospital, among them 37.6 % received intensive lipid-lowering treatment and 32.4 % reached target LDL-C levels [15].
In our study, moderate doses of statins were common, although it should be noted that the continued use of that doses could reduce the differences in risk for adverse coronary outcomes in carriers of different genotypes of the ANXA2 gene. There were no significant differences in the level of CV risk reduction regarding the treatment with moderate and low doses of statins.
In the present study, lipid-lowering treatment with statins was associated with a reduced risk of specific adverse coronary outcomes, but not all-cause mortality. This may be due to insufficient follow-up. Similar data were obtained in the Swedish ACS register 2001-2012
[16]. A reduction in the risk of recurrent coronary events, but not of all causes mortality, was also confirmed by the Cochrane meta-analysis, which included 14303 patients who initiate treatment by statins in the first 14 days after hospitalization for ACS [17].
Our study revealed several groups of patients with the insufficient effect of lipid-lowering treatment on CV risk. These are patients with GFR<30 ml/min/1.73 m2. Similar data have already been published previously; for example, the data from the Japanese ACS registry [18]. There are also opposing data on the high efficacy of statins in ACS patients with pre-dialysis CKD [19]. Perhaps, the poor effect of the lipid-lowering treatment on CV risk in our study is associated with a low frequency of statins prescription to patients with reduced renal function.
The insufficient effect of statins on CV risk in patients with aortic stenosis may be due to the predominant death from heart failure in the death structure of this group [20], as well as due to a relatively small number of patients with this pathology.
The data obtained have revealed an association of the minor allele of the ANXA2 gene with a higher level of LDL-C, which corresponds to the previous data [21]. Carriage of a rare allele has been associated with a decrease in the effectiveness of the statin. This fact can be associated not only with different initial LDL-C levels in patients with different genotypes of the ANXA2 gene. The initial LDL-C level alone was not significantly related to the effect of lipid-lowering treatment on CV risk. The link between annexin-2 activity and risk of atherosclerotic events can be mediated by the fibrinolysis system (an inhibitor of the fibrinogen activator), inflammation and the level of matrix metalloproteinases expression. In the experimental model the statins inhibited the expression of annexin-2, which may underlie their antiatherosclerotic effect [22].
These data allow considering the ANXA2 gene as a gene - candidate associated with the lipid-lowering treatment effects.
Conclusions. The data obtained highlight the importance of lipid-lowering treatment after ACS for patients' prognosis. The minor allele of the ANXA2 gene is associated with higher LDL-C levels, requiring a more intensive approach to lipid-lowering therapy. Genetic typing data could be used to select patients for intense and combined treatment of dyslipidemia, especially in the case of homozygous carriage of a minor allele of the ANXA2 gene. These data could also be used to create additional motivation for lipid-lowering treatment in patients after ACS.
The limitations of the study: an observational nature without randomization, a relatively short follow-up period. Besides, the study did not suggest the dynamic control of the blood lipids.
Disclosures:
The authors declare no conflict of interest.
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About authors:
Brazhnik Victoria Alekseevna, PhD, Chief Doctor; tel.: + 74991468294; e-mail: [email protected]
Minushkina Larisa Olegovna, PhD, Professor of the Department of internal diseases; tel.: +79036738976; e-mail: [email protected]
Rogozhina Anastasia Alexandrovna, Physician, postgraduate student Department of internal diseases, cardiology and functional diagnostics; tel.: +74991464151; e-mail: [email protected]
Averkova Anastasia Olegovna, PhD, Cardiologist, Associate Professor; e-mail: [email protected]
Zubova Ekaterina Andreevna, Physician; tel.: +74991468235; e-mail: [email protected]
Koroleva Olga Sergeevna, PhD, Assistant of the Department of therapy, cardiology and functional diagnostics; tel.: +74991464151; e-mail: [email protected]
Chichkova Marina Alexandrovna, MD, Professor, Deputy Head Physician, Professor of the Department of internal diseases, cardiology and functional diagnostics; tel.: +74954393611; e-mail: [email protected]
Khasanov Niyaz Rustemovich, MD, Associate Professor, Head of the Department of propedeutics of internal diseases; tel.: +78432360652; e-mail: [email protected]
Kosmacheva Elena Dmitrievna, PhD, Professor, Head of the Department of internal diseases № 1; e-mail: [email protected]
Boeva Olga Igorevna, PhD, Professor, Head of the Department of medical radiology with the course of postgraduate education; tel.: +78652352514; e-mail: [email protected]
Speshilov Gleb Igorevich, Head of the genetic laboratory; e-mail: [email protected]
Guliev Rustam, Research, Fellow of N. M. Emanuel Institute of Biochemical Physics; tel.: +74959397439; e-mail: [email protected]
Zateyshchikov Dmitry Alexandrovich, MD, Professor, Head of the Department of therapy, cardiology and functional diagnostics, Head of the primary vascular department of the City Clinical Hospital № 51; tel.: +74991464151; e-mail: [email protected]
