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| ORIGINAL ARTICLE |
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| Year : 2021 | Volume
: 11
| Issue : 1 | Page : 4-8 |
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Statin therapy improves serum Annexin A1 levels in patients with acute coronary syndrome: A case-controlled study
Hayder M Al-Kuraishy, Ali I Al-Gareeb, Oula Mohamed Samy
Department of Pharmacology, Toxicology and Medicine, College of Medicine, Almustansiriya University, Baghdad, Iraq
| Date of Submission | 14-Apr-2020 |
| Date of Acceptance | 25-Dec-2020 |
| Date of Web Publication | 27-Mar-2021 |
Correspondence Address:
Prof. Hayder M Al-Kuraishy
Department of Pharmacology, Toxicology and Medicine, College of Medicine, Almustansiriya University, P. O. Box: 14132, Baghdad
Iraq
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/IJCIIS.IJCIIS_49_20
 Abstract | | |
Background: The objective of the study is to estimate the protective role of statins in patients with acute coronary syndrome (ACS) through modulation of annexin A1 (AnxA1) serum levels.
Methods: A total number of 63 patients with ACS were recruited compared with 25 healthy control subjects. The enrolments were divided into – Group (A): Patients with ACS on atorvastatin (n = 20), Group (B): Patients with ACS on rosuvastatin (n = 20), Group (C): Patients with ACS but not on statin therapy (n = 23), and Group (D): Healthy controls (n = 25). Body mass index and both systolic blood pressure and diastolic blood pressures were measured. Lipid profile, atherogenic index, cardiac risk ratio, cardiovascular risk index, and human AnxA1 level were estimated.
Results: AnxA1 serum level was higher in patients with ACS (3.35 ± 0.84) compared with healthy controls (1.71 ± 0.91) and nonstatin using patients (1.47 ± 0.76) (P = 0.005).
Conclusion: AnxA1 serum level is reduced in patients with ACS compared with healthy controls. Patients with ACS on statins therapy showed a higher level of AnxA1 compared with patients with ACS but not on statin therapy.
Keywords: Acute coronary syndrome, annexin A1, atorvastatin, rosuvastatin
How to cite this article:
Al-Kuraishy HM, Al-Gareeb AI, Samy OM. Statin therapy improves serum Annexin A1 levels in patients with acute coronary syndrome: A case-controlled study. Int J Crit Illn Inj Sci 2021;11:4-8 |
How to cite this URL:
Al-Kuraishy HM, Al-Gareeb AI, Samy OM. Statin therapy improves serum Annexin A1 levels in patients with acute coronary syndrome: A case-controlled study. Int J Crit Illn Inj Sci [serial online] 2021 [cited 2023 Mar 31];11:4-8. Available from: https://www.ijciis.org/text.asp?2021/11/1/4/312263 |
| Introduction | |  |
The term “acute coronary syndrome” (ACS) encompasses a range of thrombotic coronary artery diseases (CAD), including unstable angina and both ST-segment elevation and non–ST-segment elevation myocardial infarction. Diagnosis requires an electrocardiogram and a careful review for signs and symptoms of cardiac ischemia. In ACS, common electrocardiographic abnormalities include T-wave tenting or inversion, ST-segment elevation or depression (including J-point elevation in multiple leads), and pathologic Q waves.[1]
Hydroxymethylglutaryl-coenzyme A reductase inhibitors, also known as “statins,” are used adjunctively to diet and exercise to treat hypercholesterolemia by lowering total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG) concentrations while increasing high-density lipoprotein cholesterol (HDL-C) concentrations.[2] The statins are indicated for the treatment and/or prevention of atherosclerotic cardiovascular disease (e.g., myocardial infarction or stroke).[3]
Statins have an important role in reducing both morbidity and mortality in patients with ACS, apart from cholesterol-lowering effect. Statins are known to have multiple effects, which are independent of cholesterol-lowering effect known as pleiotropic effects, which are antioxidant properties, enhance endothelial function, and promote atherosclerotic plaque stability, reduction of platelets aggregation, and coagulation process, and increase anti-inflammatory effect.[4]
Annexin A1 (AnxA1), formerly called lipocortin-1, is a key player in the resolution of inflammation and known as a mediator of the anti-inflammatory effects of glucocorticoids. It is abundantly expressed in innate immune cells under normal conditions. In experimental models, AnxA1 or AnxA1-derived peptides exert a broad range of anti-inflammatory effects in monocytes, involving transcriptional changes, as well as rapid posttranslational effects.[5] A number of studies have also shown that glucocorticoids induce de novo synthesis as well as translocation of AnxA1 to the cell surface in the peripheral blood mononuclear cells or isolated monocytes/macrophages.[5] The expression of AnxA1 in circulating immune cells may thus serve as an indicator of anti-inflammatory actions and glucocorticoid sensitivity.[6]
Several studies have described high plasma levels of inflammatory cytokines and enhanced activation of neutrophils in patients with CAD, particularly in those with unstable conditions of the disease. The presence of anti-inflammatory mediators, on the other hand, is less well documented.[7]
A proteomic analysis of human coronary arteries demonstrated increased levels of AnxA1 in atherosclerotic tissue compared with nonatherosclerotic tissue and further validation by immunohistochemistry suggested that AnxA1 was expressed by macrophages in the intima. Interestingly, a study of human carotid plaques reported that AnxA1 expression was increased in plaques from asymptomatic patients compared with plaques from symptomatic patients, thus indicating an association between AnxA1 and plaque stabilization.[8] Previously, Yixian and Ping found that the anti-inflammatory effect of lovastatin was mediated upregulation of AnxA1.[9]
The hypothesis and rationale of the present study depend on the ameliorating effect of statins on the AnxA1 serum level. Therefore, the aim of the present study was to investigate the effect of statin therapy on AnxA1 level in patients with ACS.
| Methods | | |
In this case–control study, patients with ACS with or without statin therapy aged between 45 and 70 years were recruited from the coronary care unit according the American diagnostic criteria[10] compared with healthy controls. This study was approved by ethical committee and editorial board in Al-Mustansiriya University/College of Medicine, from January to March 2019 (IRB 23DT in 22/5/2019), in accordance with the ethical standards set forth in the Declaration of Helsinki in 1975. Direct interview, full history, and physical examination were done. Full routine investigations were recommended for each patient regarding previous investigations, duration and type of statin therapy, dietary habits, and life style modifications. All patients and enrolled participants gave informed verbal consent for their participation in this study. According to the statin therapy, patients with ACS and healthy controls were divided as given below:
- Group A: Patients with ACS on atorvastatin
- Group B: Patients with ACS on rosuvastatin
- Group C: Patients with ACS but not on statins therapy
- Group D: Healthy controls.
Inclusion criteria
Any patients with ACS with age >45 years with or without statin (for at least 3 months) therapy were included depending on the potential effect of statins on the human AnxA1 serum level in patients with ACS.
Exclusion criteria
Any patients with severe or morbid obesity, end-stage kidney disease, liver failure, psychiatric disorders, severe anemia, connective tissue diseases, pregnancy, lactation, and malignancy were excluded from the present study.
Anthropometric measurements
Body mass index (BMI) was obtained from measuring the weight in kilograms and the height in meters; then, BMI was calculated by specific equation, BMI = weight (kg)/height (m2).[11],[12] Blood pressure (mmHg) was measured by using mercury sphygmomanometer device (MDF/Germany), in supine position, for each patient, and average of two blood pressure readings was taken. Both systolic blood pressure and diastolic blood pressure were measured.[13]
Biochemical measurements
Estimation of lipid profile
TC, TG, and HDL were measured by auto-analyzer (ERBE diagnostic Manheim, Germany). LDL was estimated by Friedewald equation.[14] very LDL (VLDL) = TG/5, atherogenic index (AI) = log (TG/HDL), cardiac risk ratio (CRR) = TC/HDL, cardiovascular risk index (CVRI) = TG/HDL.[15] Determination of human AnxA1 level was done by using ELISA kit method (Human ANXA1, MyBioSource/USA) which was expressed as ng/ml.
All biochemical measurements were done in the Laboratory Unite, Department of Clinical Pharmacology, College of Medicine, Al-Mustansiryia University, Baghdad, Iraq.
Statistical analysis
Analysis of data was carried out using the available statistical package of SPSS-24 (IBM SPSS, Stastics for Window, Version 24.00; 2019, Armonk, NY, USA: IBM Corp). Data were presented in simple measures of percentage, numbers, mean, and standard deviation. The sample size was determined as two-third of cases compared to one-third of controls. Unpaired t-test was used to test the difference between two independent means , however ANOVA test was used to find the differences among more than two independent means. Statistical significance was considered regarding P < 0.05.
| Results | | |
In the present study, at first, a total number of 78 patients were recruited, 15 of them were excluded (5 with renal impairments, 4 with chronic hepatitis, and 6 with endocrine disorders); then, the 63 patients with ACS were divided as follows – 40 of them were on statin therapy (statin users) and 23 were not on statin therapy (nonstatin users) compared with 25 healthy controls. All recruited patients and healthy controls completed the study without any withdrawal as revealed in the consort flow of the present study [Figure 1].
Demographic characteristics of the present study
The allocation of patients and control groups seems to be equally matched in respect to age, gender weight, height, and BMI; therefore, there was no significant difference in BMI among patients with or without statin therapy and controls (P = 0.52). The study revealed that 28 out of 63 patients were smokers, while in the control group, 60% were smokers and 40% were nonsmokers. The patients gave a history of other associated comorbidities that seem to increase the risk of ACS, including 31 (49.20%) patients with hypertension, 1 (1.58%) patient with familial dyslipidemia, 28 (44.44%) patients with ischemic heart disease, and 7 (11.11%) patients with cerebrovascular accident. Patients were subclassified according to their life style; 38% of patients had a sedentary lifestyle, 26.9% were of moderate activities, and 34.9% were physically active, while in the control group, 80% were patients with good physical activity and 20% were patients with moderate activities [Table 1]. | Table 1: Demographic characteristics of acute coronary syndrome patients and controls
Click here to view |
Assessment of metabolic profile in patients with acute coronary syndrome
Regarding the metabolic profile, TC, TG, VLDL, LDL, AI, CRR, and CVRI were higher in patients with ACS but not on statin therapy (P <0.001). Regarding HDL level, it was higher in statin users compared to nonstatin patients [Table 2]. | Table 2: Metabolic profile in patients with acute coronary syndrome regarding statins therapy
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Effect of statins therapy on annexin A1 serum levels in patients with acute coronary syndrome
A higher AnxA1 level (3.35 ± 0.84) was obtained from patients on statin therapy in comparison to the controls (1.71 ± 0.91) and patients using nonstatin (1.47 ± 0.76) (P = 0.005) [Figure 2]. AnxA1 serum level was significantly higher in rosuvastatin (3.69 ± 0.92) compared with atorvastatin (3.00 ± 0.60) (P = 0.008) [Figure 3]. | Figure 2: Mean of annexin A1 level in acute coronary syndrome patients. *P ≤ 0.01 compared to the nonstatin and control groups. #P < 0.05 compared to the control
Click here to view |
 | Figure 3: Annexin A1 serum level patients with acute coronary syndrome on atorvastatin versus rosuvastatin
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| Discussion | | |
The finding core of the present study was significant elevation in the AnxA1 serum level in patients on statin therapy as compared with nonstatin users' patients, as revealed by Yoshiyuki's study.[16] inflammation is linked with the development of atherosclerosis. AnxA1 inhibits pro-inflammatory response through suppression of FPRL-1/ALXR signaling pathway.[17]
AnxA1 provides a protective role in patients with ACS by inhibiting integrin activation and myeloid cells accumulation in the arterial wall, promotes plaque stability and reduces necrosis, induces neutrophils apoptosis, and decreases endothelial cell adhesion molecules, thus reducing atherogenesis.[18]
The impact of statins on AnxA1 level was reported in a previous study that showed an elevation in the expression of AnxA1 in patients with statin therapy by calcium-mediated effect.[19] A previous study demonstrated the effect of high-dose atorvastatin in modifying the protein profile of monocytes in 33 patients with ACS and revealed an increased expression of AnxA1 in those patients compared with 22 controls.[20] However, our current study highlights a significant impact of rosuvastatin on increasing AnxA1 level in patients with ACS.
The effects of rosuvastatin on enhancing AnxA1 level may be due to several indirect causes including the hydrophilic nature of the drug and its effect in improving HDL level to a greater extent than atorvastatin since HDL and Apo A lipoprotein have a significant role in increasing AnxA1 level through different signaling pathway. As well, rosuvastatin increases endothelial AnxA1 expression through augmentation of cAMP level, which involved in the synthesis and release of AnxA1.[21],[22]
Limitations of the present study were small sample size that depended on the availability of patients with ACS on statins therapy; potential source of bias was not estimated; doses of statin drugs were not estimated precisely, as well doses of statins and compliance were not recorded; and finally, this study was not prospective to determine the final decision regarding the effect of statins on the AnxA1 serum levels. However, in this study, there were no any missing data since all recruited patients and controls continue the study; therefore, this study is regarded as a preliminary pilot study for large-scale prospective study.
| Conclusion | | |
Patients with ACS on statin therapy showed a higher level of AnxA1 compared with patients with ACS but not on statins therapy, and further studies are warranted especially comparing different statins.
Acknowledgment
The authors would like to express deep thanks for all under-graduate and postgraduate medical students for their participation in this experimental novel study.
Research quality and ethics statement
The authors of this manuscript declare that this scientific work complies with reporting quality, formatting and reproducibility guidelines set forth by the EQUATOR Network, notably the STROBE guidelines. The authors also attest that this clinical investigation was determined to require and approved by the Institutional Ethics Committee at Al-Mustansiriya University College of Medicine (IRB 23DT in 22/5/2019).
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3]
[Table 1], [Table 2]
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