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The association between plasma furin and cardiovascular events after acute myocardial infarction



Furin is the key enzyme involved in the cleavage of pro-BNP and plays a critical role in the cardiovascular system through its involvement in lipid metabolism, blood pressure regulation and the formation of atheromatous plaques. NT-proBNP and recently, corin, also a key enzyme in the cleavage of pro-BNP, have been accepted as predictors of prognosis after acute myocardial infarction (AMI). This cohort study was conducted to investigate the relationship between plasma furin and the prognostic outcomes of AMI patients.


In total, 1100 AMI patients were enrolled in the study and their plasma furin concentrations were measured. The primary endpoint was major adverse cardiac events (MACE), a composite of cardiovascular (CV) death, non-fatal myocardial infarction (MI) and non-fatal stroke. The associations between plasma furin concentration and AMI outcomes were explored using Kaplan–Meier curves and multivariate Cox regression analysis.


The results showed a slight increase in mean cTNT in patients with higher furin concentrations (P = 0.016). Over a median follow-up of 31 months, multivariate Cox regression analysis indicated that plasma furin was not significantly associated with MACE (HR 1.01; 95% CI 0.93–1.06; P = 0.807) after adjustment for potential conventional risk factors. However, plasma furin was associated with non-fatal MI (HR 1.09; 95% CI 1.01–1.17; P = 0.022) in the fully adjusted model. Subgroup analyses indicated no relationship between plasma furin and MACE in different subgroups.


This study found no association between plasma furin and risk of MACE. Thus, plasma furin may not be a useful predictor of poor prognosis after AMI. However, higher levels of plasma furin may be associated with a higher risk of recurrent non-fatal MI.

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Cardiovascular diseases (CVDs) remain a major cause of premature death and chronic disability across all regions in the world [1]. Acute myocardial infarction (AMI) is a severe CVD. The currently available scoring systems, such as the Global Registry of Acute Coronary Events (GRACE) and the Thrombolysis In Myocardial Infarction (TIMI), have been established to assist clinicians with the selection of treatment strategies for AMI patients at an early stage [2, 3]. Troponin I and NT-proBNP have been accepted as predictors of prognosis after AMI [4, 5]. However, new biomarkers may be helpful in precisely predicting poor prognosis or may contribute to a better understanding of the pathological process of AMI patients.

A recent study reported that corin was an independent predictor of prognosis in patients with AMI [6]. Furin, another core enzyme that cleaves proBNP into active BNP fragments and corin [7], may be associated with poor prognosis after AMI.

Furin is a mammalian subtilisin/kex2p-like endoprotease involved in the processing of various precursor proteins [8]. Studies have shown that furin plays an important role in the cardiovascular system through regulation of lipid and cholesterol metabolism, blood pressure (BP) and the formation of atherosclerotic lesions [9]. Michael T et al. found that circulating furin cleaved proprotein convertase subtilisin/kexin type 9 (PCSK9); PCSK9 regulates LDL receptors and serum atheromatous plaques [10, 11]. Furin is also involved in BP regulation by shedding endogenous (pro)renin receptors [12], promoting the migration and proliferation of vascular smooth muscle cells [13] and activating the epithelial Na + channel [14]. Moreover, Gopala et al. [15] observed that inhibition of furin in the atherosclerotic segment of mice decreased vascular remodelling and atherosclerosis. Furin is a better predictor of cardiovascular (CV) outcomes than BNP and corin in type 2 diabetes patients [16]. Further, limited research has suggested that furin may be associated with CV events after MI [17]. Therefore, this study was performed to evaluate the prognostic utility of plasma furin in AMI patients.


Study population

A total of 1100 AMI patients consecutively admitted to the People’s Liberation Army General Hospital (PLAGH) between January 2013 and September 2017 were included in this study. All participants provided written informed consent. This study was approved by the institutional review board of the PLAGH and was performed in accordance with the Declaration of Helsinki. AMI was diagnosed if the patient had a cardiac troponin I level exceeding the 99th percentile of a normal reference population with at least one of the following: chest pain lasting > 20 min, diagnostic serial electrocardiographic changes consisting of new pathologic Q waves, or ST-segment and T-wave changes [18].

Biochemical measurements

Researchers who were blinded to the patients' characteristics and outcomes conducted biochemical measurements. Blood samples were collected from the AMI patients on the first morning after admission. Plasma was obtained by centrifugation for 10 min at 3,000 rpm and then stored at -80 °C until further analysis. Plasma furin concentrations were determined in EDTA-treated plasma samples using a commercially available kit (Catalog # EHFURIN, ThermoFisher, USA), according to the manufacturer’s instructions.

Outcome events and follow-up

The clinical, demographic and biochemical data of the patients were obtained from the hospital files and computer records. The primary endpoint for this study was major adverse cardiac events (MACE), a composite of CV death, non-fatal myocardial infarction (MI) or non-fatal stroke. Other endpoints of interest included hospitalisation for heart failure (HF), non-CV death and all-cause death. Hospitalisation for HF was defined as a hospital readmission primarily due to HF. Recurrent MI was diagnosed in accordance with established criteria, as described [18]. The endpoints were obtained by reviewing the clinical records of the re-admitted patients or by contacting each patient individually.

Statistical analyses

Continuous variables were compared using the Kruskal–Wallis test. Categorical variables were expressed as counts (percentages) and compared using the Chi-square test. The correlation analysis was performed using the Spearman method. The associations between plasma furin concentration and AMI outcomes were explored using the Kaplan–Meier method with stratification by furin tertile. The results were also evaluated with Cox proportional hazard regression models. The adjusted covariates included in the multivariate models have been previously shown to be associated with MACE. Model 1 was adjusted for age and sex. Model 2, the fully adjusted model, was also adjusted for: eGFR, BMI, smoking, history of diabetes, hypertension and MI, and STEMI/non-STEMI. Subgroup analyses were also undertaken to determine whether furin was associated with MACE in different age, gender, BMI, smoking status, diabetes, hypertension and STEMI/NSTEMI subgroups. Multiple linear regression analysis was performed to identify variables independently associated with furin among the entire study sample. All statistical tests were two-tailed and a P value less than 0.05 was considered statistically significant. All analyses were performed with SAS version 9.4.


Baseline data

The mean age of the 1,100 study participants was 61 ± 13 years; 77% were male. The distribution of plasma furin was left-skewed (Additional file 2: Figure S1). The median plasma furin level was 156.6 (interquartile range, 102.4–228.8) pg/ml. There was no significant difference between male and female patients (158.5 [103.4–226.9] pg/ml for males versus 145.9 [93.1–233.6] pg/ml for females; P = 0.360), between diabetic and non-diabetic patients [160.9 (104.2–231.0] pg/ml for diabetics versus 155.1 [101.6–224.9] pg/ml for non-diabetics; P = 0.535), between hypertensive and non-hypertensive patients (154.0 [101.7–222.6] pg/ml for hypertensive versus 160.8 [103.0–232.1] pg/ml for non-hypertensive; P = 0.233) and between STEMI and non-STEMI patients (160.7 [105.3–231.4] pg/ml for STEMI versus 147.2 [94.9–220.1] pg/ml for NSTEMI; P = 0.079).

Associations between plasma furin levels and clinical parameters

The baseline characteristics of the sample are listed in Table 1. AMI patients were divided into three groups according to their plasma furin tertile (≤ 117.5 pg/ml, 117.5–200 pg/ml, ≥ 200 pg/ml). There was a slight increase in the mean cTNT in patients with higher furin levels (P = 0.016). There was no significant increase in NT-proBNP as plasma furin increased (Table 1).

Table 1 Baseline variables according to the plasma furin tertile of AMI patients

Spearman correlation analysis showed that log-transferred furin was not significantly correlated with age, blood glucose, HbA1c, left ventricular ejection fraction, log eGFR, log cTNT, log CKMB or log NT–proBNP (Additional file 1: Table S1).

Kaplan–Meier analysis

Over a median follow-up of 31 months, 133 cases of cardiovascular death, 37 cases of non-cardiovascular death, 26 cases of recurrent non-fatal MI, 22 cases of non-fatal stroke and 27 cases of hospitalisation for HF occurred in the sample. Kaplan–Meier survival analysis suggested that furin was not associated with the composite CV outcome (Fig. 1).

Fig. 1
figure 1

Kaplan–Meier analysis of MACE rates in AMI patients according to different furin categories

COX regression analysis of endpoints

Cox regression analysis indicated that increasing plasma furin level was not associated with an increased risk of MACE (HR 1.01; 95% CI 0.93–1.06; P = 0.807). In addition, each endpoint of CV death, non-fatal MI, non-fatal stroke, non-CV death, all death or hospitalisation for HF was investigated. The results showed that plasma furin was not associated with any of these endpoints except for possibly a higher risk of recurrent non-fatal MI (HR 1.09; 95% CI 1.01–1.17; P = 0.022) (Table 2).

Table 2 Effect of every 50-unit increase in furin on cardiovascular outcomes

Subgroup analysis

Subgroup analysis showed that the association between furin and MACE did not differ according to age, gender, BMI, history of smoking, diabetes, hypertension and type of MI (STEMI/NSTEMI) (Fig. 2).

Fig. 2
figure 2

Association between furin and cardiovascular outcomes among subgroups of patients

Finally, univariable cox regression analysis was performed to identify variables that may be independently associated with MACE in the sample (Table 3). The results showed that NT–proBNP (P < 0.001), age (P < 0.001), creatinine (P < 0.001), cTnT (P = 0.001), blood glucose (P = 0.001), diabetes history (P = 0.010), CKD history (P = 0.023) and STEMI (P = 0.039) were all positively associated with MACE. In contrast, LVEF (P < 0.001), usage of aspirin (P < 0.001), ACEI/ARB (P < 0.001) and male sex (P = 0.001) were negatively associated with MACE.

Table 3 Univariable predictors of MACE after MI in the whole sample


This study of 1,100 consecutive AMI patients demonstrated that plasma furin was not associated with MACE events, but may be associated with a higher risk of non-fatal MI.

Furin is an enzyme that converts various inactive protein precursors into their active forms. In lipid metabolism, furin-cleaved PCSK9 increases the LDL receptor, leading to a decrease in LDL-C [11, 19]. On the other hand, ANGPTL 3 and 4, which are also cleaved by furin, can mediate endothelial lipase and lipoprotein lipase inactivation [9, 20]. The renin receptor, which is activated by furin, binds to renin or prorenin and consequently increases BP [21]. The epithelial Na + channel (ENaC), another substrate of furin, is associated with increased BP [14, 22]. On the other hand, transforming growth factor is also activated by furin but it may contribute to lowering BP [23, 24]. BNP activated by furin is also associated with low BP through its diuretic and vasodilatory actions. Together, these findings indicate that the underlying mechanisms of plasma furin in the cardiovascular system may be complex and bi-directional.

Clinical studies investigating the role of furin in the cardiovascular system have also produced inconsistent findings. Li et al. suggested that the furin gene may be a candidate gene involved in human hypertension as the G allele of 1970C > G is a modest risk factor for hypertension [25]. However, another human genome-wide association study found that the AA genotype of rs4702 in the furin gene, which leads to less furin protein expression, was associated with both elevated SBP and DBP [26]. A study comprising 4678 healthy European adults found that higher baseline plasma furin was significantly associated with higher BMI, blood glucose and BP [27]. However, another study comprising 2312 healthy Chinese adults found inverse associations between furin and both blood glucose and BP [28]. In the current study, there were no significant relationships between plasma furin and BMI, BP or blood glucose. These findings suggest that furin may play a complicated role in the cardiovascular system in certain conditions. A recent paper reported that plasma furin was positively associated with MACE after MI [17]; however, the methods for blood sample collection were not described in detail and thus, this study cannot be directly compared with the current study. Moreover, in this previous study, the primary endpoint, MACE, was defined as all-cause mortality, hospitalisation for HF and recurrent MI, while in the current study it included CV death, non-fatal MI and non-fatal stroke [28]. These differences could have led to the differing results of the two studies. Mechanistic studies of furin in CVDs should further clarify its activity and regulatory factors.

NT-proBNP provides prognostic value for MACE in patients with AMI [4], and this was verified in the current study. Glycosylation and an increase in furin activity are two major post-translational modifications that reduce proBNP [29]; these synergistically lead to increased circulating BNP and NT-proBNP. It should be mentioned that neither the concentrations of corin/furin nor the corin activity increase during this process [29]. It is possible that an increase in furin activity but not plasma furin concentration is pivotal in the increase in circulating BNP in AMI.

The current study found a potential association between plasma furin concentration and recurrent non-fatal MI after adjustment for conventional risk factors. The results of previous studies investigating the role of furin in atherosclerosis may explain this potential association. Furin mRNA was found to be increased after MI in a rat model and the expression of furin was negatively correlated with the LVEF [30, 31]. In addition, over-expression of furin was found in human atherosclerotic plaques and inhibition of furin was found to decrease vascular remodelling and atherosclerosis in mouse models, suggesting that furin may play an important role in plaque progression [32]. Furin activates many pro-inflammatory cytokines, such as TNF-α and IFN-γ, which leads to the progression of atherosclerosis [33, 34]. Furthermore, furin levels are associated with higher circulating MCP1 levels and greater carotid intima-media thickness [35]. In the current study, a slight increase in cTNT was found in patients with higher furin levels. Higher peak concentrations of cTnT reflect a larger infarct area [5]. It is possible that higher levels of furin may indicate progression of atherosclerosis and more severe or vulnerable plaque lesions, resulting in a higher risk of recurrent non-fatal MI.

The current results indicated that plasma furin concentration was not associated with the risk of MACE but may be associated with non-fatal MI. Studies with larger sample sizes are needed to verify these results and detailed basic studies are required to further explore these findings. There are several limitations of this study that should be noted. First, this cohort study was conducted at a single centre among the Chinese population; the generalisability of these findings to other populations with different genetic backgrounds and health profiles should be performed with caution. Second, blood samples were collected on the first morning after admission. There were no samples available at other time points after MI. The dynamic changes in furin during MI and the relationship between these changes and prognosis are still unknown. Third, this study did not evaluate the differences between patients with and without MI, and this study could not determine whether MI was associated with higher or lower plasma furin levels. Fourth, the plasma furin activity could not be measured, which may be different from the plasma furin concentration. The degradation rate of the furin substrate is a potential way to detect this; however, the method for detecting plasma furin activity is not established and commercial kits were not available until recently [36]. Lastly, the sample size did not provide enough power to detect differences in endpoints other than the composite MACE outcome.


The findings of this study suggest that plasma furin is not associated with the risk of MACE, but higher levels of plasma furin may be associated with a higher risk of recurrent MI in AMI patients.

Availability of data and materials

The datasets that support the findings of this study are available from the corresponding author on reasonable request.



Acute myocardial infarction


Aspartate aminotransferase


Alanine transaminase


Atrial Natriuretic Peptide


Body mass index


Troponin T


Creatine kinase-MB


Chronic Kidney Disease




Diabetes mellitus


Estimated glomerular filtration rate


Epithelial Sodium Channels


Glycosylated hemoglobin A1C


High density lipoprotein cholesterol


Low density lipoprotein cholesterol


Left ventricular ejection fraction


Major adverse cardiac events


Non-ST-segment elevation myocardial infarction


N terminal pro B type natriuretic peptide


Proprotein convertase subtilisin/kexin


ST-segment elevation myocardial infarction


  1. Roth GA, Johnson C, Abajobir A, Abd-Allah F, Abera SF, Abyu G, Ahmed M, Aksut B, Alam T, Alam K, Alla F. Global, regional, and national burden of cardiovascular diseases for 10 causes, 1990 to 2015. J Am Coll Cardiol. 2017;70(1):1–25.

    Article  Google Scholar 

  2. Antman EM, Cohen M, Bernink PJ, McCabe CH, Horacek T, Papuchis G, Mautner B, Corbalan R, Radley D, Braunwald E. The TIMI risk score for unstable angina/non-ST elevation MI: a method for prognostication and therapeutic decision making. JAMA. 2000;284(7):835–42.

    CAS  Article  Google Scholar 

  3. Eagle KA, Lim MJ, Dabbous OH, Pieper KS, Goldberg RJ, Van de Werf F, Goodman SG, Granger CB, Steg PG, Gore JM, Budaj A. A validated prediction model for all forms of acute coronary syndrome: estimating the risk of 6-month postdischarge death in an international registry. JAMA. 2004;291(22):2727–33.

    CAS  Article  Google Scholar 

  4. Heeschen C, Hamm CW, Mitrovic V, Lantelme N, White HD. N-Terminal pro-B-type natriuretic peptide levels for dynamic risk stratification of patients with acute coronary syndromes. Circulation. 2004;110(20):3206–12.

    CAS  Article  Google Scholar 

  5. Antman EM, Tanasijevic MJ, Thompson B, Thompson C, Schactman M, McCabe CH, Cannon CP, Fischer GA, Fung AY, Wybenga D, et al. Cardiac-specific troponin I levels to predict the risk of mortality in patients with acute coronary syndromes. N Engl J Med. 1996;335(18):1342–9.

    CAS  Article  Google Scholar 

  6. Zhou X, Chen J, Zhang Q, Shao J, Du K, Xu X, Kong Y. Prognostic value of plasma soluble corin in patients with acute myocardial infarction. J Am Coll Cardiol. 2016;67(17):2008–14.

    CAS  Article  Google Scholar 

  7. Semenov AG, Tamm NN, Seferian KR, Postnikov AB, Karpova NS, Serebryanaya DV, Koshkina EV, Krasnoselsky MI, Katrukha AG. Processing of pro-B-type natriuretic peptide: furin and corin as candidate convertases2. Clin Chem. 2010;56(7):1166–76.

    Article  Google Scholar 

  8. Nakayama K. Furin: a mammalian subtilisin/Kex2p-like endoprotease involved in processing of a wide variety of precursor proteins. Biochem J. 1997;327:625–35.

    CAS  Article  Google Scholar 

  9. Ren K, Jiang T, Zheng X, Zhao G. Proprotein convertase furin/PCSK3 and atherosclerosis: new insights and potential therapeutic targets. Atherosclerosis. 2017;262:163–70.

    CAS  Article  Google Scholar 

  10. Lipari MT, Li W, Moran P, Kong-Beltran M, Sai T, Lai J, Lin SJ, Kolumam G, Zavala-Solorio J, Izrael-Tomasevic A, et al. Furin-cleaved proprotein convertase subtilisin/Kexin Type 9 (PCSK9) is active and modulates low density lipoprotein receptor and serum cholesterol levels. J Biol Chem. 2012;287(52):43482–91.

    CAS  Article  Google Scholar 

  11. Essalmani R, Susan-Resiga D, Chamberland A, Abifadel M, Creemers JW, Boileau C, Seidah NG, Prat A. In vivo evidence that furin from hepatocytes inactivates PCSK9. J Biol Chem. 2011;286(6):4257–63.

    CAS  Article  Google Scholar 

  12. Cousin C, Bracquart D, Contrepas A, Corvol P, Muller L, Nguyen G. Soluble form of the (Pro)renin receptor generated by intracellular cleavage by furin is secreted in plasma. Hypertension. 2009;53(6):1077–82.

    CAS  Article  Google Scholar 

  13. Urban D, Lorenz J, Meyborg H, Ghosh S, Kintscher U, Kaufmann J, Fleck E, Kappert K, Stawowy P. Proprotein convertase furin enhances survival and migration of vascular smooth muscle cells via processing of pro-nerve growth factor. J Biochem. 2013;153(2):197–207.

    CAS  Article  Google Scholar 

  14. Hughey RP, Bruns JB, Kinlough CL, Harkleroad KL, Tong Q, Carattino MD, Johnson JP, Stockand JD, Kleyman TR. Epithelial sodium channels are activated by furin-dependent proteolysis. J Biol Chem. 2004;279(18):18111–4.

    CAS  Article  Google Scholar 

  15. Yakala GK, Cabrera-Fuentes HA, Crespo-Avilan GE, Rattanasopa C, Burlacu A, George BL, Anand K, Mayan DC, Corlianò M, Hernández-Reséndiz S, et al. FURIN inhibition reduces vascular remodeling and atherosclerotic lesion progression in mice. Arterioscler Thromb Vasc Biol. 2019;39(3):387–401.

    CAS  Article  Google Scholar 

  16. Fathy SA, Abdel Hamid FF, Zabut BM, Jamee AF, Ali MAM, Abu Mustafa AM. Diagnostic utility of BNP, corin and furin as biomarkers for cardiovascular complications in type 2 diabetes mellitus patients. Biomarkers. 2015;20(6–7):460–9.

    CAS  Article  Google Scholar 

  17. Wang YK, Tang JN, Han L, Liu XD, Shen YL, Zhang CY, Liu XB. Elevated FURIN levels in predicting mortality and cardiovascular events in patients with acute myocardial infarction. Metabolism. 2020;111:154323.

    CAS  Article  Google Scholar 

  18. Thygesen K, Alpert JS, White HD. Universal definition of myocardial infarction. J Am Coll Cardiol. 2007;50(22):2173–95.

    Article  Google Scholar 

  19. Watts GF, Chan DC, Pang J, Ma L, Ying Q, Aggarwal S, Marcovina SM, Barrett PH. PCSK9 Inhibition with alirocumab increases the catabolism of lipoprotein(a) particles in statin-treated patients with elevated lipoprotein(a). Metab Clin Exp. 2020;107:154221.

    CAS  Article  Google Scholar 

  20. Hjelholt AJ, Søndergaard E, Pedersen SB, Møller N, Jessen N, Jørgensen JO. Growth hormone upregulates ANGPTL4 mRNA and suppresses lipoprotein lipase via fatty acids: randomized experiments in human individuals. Metab Clin Exp. 2020;105:154188.

    CAS  Article  Google Scholar 

  21. Gonzalez AA, Prieto MC. Renin and the (pro)renin receptor in the renal collecting duct: Role in the pathogenesis of hypertension. Clin Exp Pharmacol Physiol. 2015;42(1):14–21.

    CAS  Article  Google Scholar 

  22. Zachar R, Mikkelsen MK, Skjødt K, Marcussen N, Zamani R, Jensen BL, Svenningsen P. The epithelial Na channel α- and γ-subunits are cleaved at predicted furin-cleavage sites, glycosylated and membrane associated in human kidney. Pflugers Arch. 2019;471:1383–96.

    CAS  Article  Google Scholar 

  23. Li Y, Shen XZ, Li L, Zhao TV, Bernstein KE, Johnson AK, Lyden P, Fang J, Shi P. Brain transforming growth factor-β resists hypertension via regulating microglial activation. Stroke. 2017;48(9):2557–64.

    CAS  Article  Google Scholar 

  24. Baumann J, Huang SF, Gassmann M, Tsao CC, Ogunshola OO. Furin inhibition prevents hypoxic and TGFbeta-mediated blood-brain barrier disruption. Exp Cell Res. 2019;383(2):111503.

    CAS  Article  Google Scholar 

  25. Li N, Luo W, Juhong Z, Yang J, Wang H, Zhou L, Chang J. Associations between genetic variations in the FURIN gene and hypertension. BMC Med Genet. 2010;11(1):124.

    CAS  Article  Google Scholar 

  26. Turpeinen H, Seppala I, Lyytikainen LP, Raitoharju E, Hutri-Kahonen N, Levula M, Oksala N, Waldenberger M, Klopp N, Illig T, et al. A genome-wide expression quantitative trait loci analysis of proprotein convertase subtilisin/kexin enzymes identifies a novel regulatory gene variant for FURIN expression and blood pressure. Hum Genet. 2015;134(6):627–36.

    CAS  Article  Google Scholar 

  27. Fernandez C, Rysä J, Almgren P, Nilsson J, Engström G, Orho-Melander M, Ruskoaho H, Melander O. Plasma levels of the proprotein convertase furin and incidence of diabetes and mortality. J Intern Med. 2018;284(4):377–87.

    CAS  Article  Google Scholar 

  28. He Y, Ren L, Zhang Q, Zhang M, Shi J, Hu W, Peng H, Zhang Y. Serum furin as a biomarker of high blood pressure: findings from a longitudinal study in Chinese adults. Hypertens Res. 2019;42(11):1808–15.

    CAS  Article  Google Scholar 

  29. Vodovar N, Séronde M, Laribi S, Gayat E, Lassus J, Boukef R, Nouira S, Manivet P, Samuel J, Logeart D, et al. Post-translational modifications enhance NT-proBNP and BNP production in acute decompensated heart failure. Eur Heart J. 2014;35(48):3434–41.

    CAS  Article  Google Scholar 

  30. Chen Z, Lu S, Xu M, Liu P, Ren R, Ma W. Role of miR-24, furin, and transforming growth factor-β1 signal pathway in fibrosis after cardiac infarction. Med Sci Monitor. 2017;23:65–70.

    CAS  Article  Google Scholar 

  31. Sawada Y, Inoue M, Kanda T, Sakamaki T, Tanaka S, Minamino N, Nagai R, Takeuchi T. Co-elevation of brain natriuretic peptide and proprotein-processing endoprotease furin after myocardial infarction in rats. FEBS Lett. 1997;400(2):177–82.

    CAS  Article  Google Scholar 

  32. Turpeinen H, Raitoharju E, Oksanen A, Oksala N, Levula M, Lyytikäinen L, Järvinen O, Creemers JWM, Kähönen M, Laaksonen R, et al. Proprotein convertases in human atherosclerotic plaques: the overexpression of FURIN and its substrate cytokines BAFF and APRIL. Atherosclerosis. 2011;219(2):799–806.

    CAS  Article  Google Scholar 

  33. Pesu M, Muul L, Kanno Y, O’Shea JJ. Proprotein convertase furin is preferentially expressed in T helper 1 cells and regulates interferon gamma. Blood. 2006;108(3):983–5.

    CAS  Article  Google Scholar 

  34. Hipp MM, Shepherd D, Gileadi U, Aichinger MC, Kessler BM, Edelmann MJ, Essalmani R, Seidah NG, Reis E, Sousa C, Cerundolo V. Processing of human toll-like receptor 7 by furin-like proprotein convertases is required for its accumulation and activity in endosomes. Immunity. 2013;39(4):711–21.

    CAS  Article  Google Scholar 

  35. Yang X, Yang W, McVey DG, Zhao G, Hu J, Poston RN, Ren M, Willeit K, Coassin S, Willeit J, Webb TR. FURIN expression in vascular endothelial cells is modulated by a coronary artery disease-associated genetic variant and influences monocyte transendothelial migration. J Am Heart Assoc. 2020;9(4):e14333.

    Article  Google Scholar 

  36. Bourne GL, Grainger DJ. Development and characterisation of an assay for furin activity. J Immunol Methods. 2011;364:101–8.

    CAS  Article  Google Scholar 

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This study was supported by the China Postdoctoral Science Foundation (2016M603025).

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Authors and Affiliations



ZWL conceived the concept of the study and drafted the manuscript. ZWL and JWL performed the statistical analyses and drafted the manuscript. ZWL and QM collected the baseline and follow-up data. QM and JL performed the laboratory tests. YDC guided the writing of the article and is the first corresponding author. All authors have read and approved the manuscript.

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Correspondence to Jing-Wei Li or Yun-Dai Chen.

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The study was reviewed and approved by the ethics committee of the PLAGH and was performed in accordance with the Declaration of Helsinki. Written informed consent was obtained from each individual or guardian.

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Supplementary Information

Additional file 1

: Table S1. Spearman correlation analysis between log furin and covariates.

Additional file 2

: Figure S1. Distribution of plasma furin in the sample.

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Liu, ZW., Ma, Q., Liu, J. et al. The association between plasma furin and cardiovascular events after acute myocardial infarction. BMC Cardiovasc Disord 21, 468 (2021).

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  • Furin
  • Acute myocardial infarction
  • Major adverse cardiac events