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Letter to the Editor

Acute Myocarditis after mRNA COVID-19 Vaccine: A Correspondence

Rujittika Mungmunpuntipantip et al. Viroj Wiwanitkit

Dear Editor,

We would like to share ideas on the publication “Acute Myocarditis Following mRNA COVID-19 Vaccine.” Gomes et al. examine the potential side effects of COVID-19 vaccination and the current state of acute myocarditis. COVID-19 immunization will probably cause heart abnormalities. We agree that this is a possibility. However, it should be noted that there is frequently inadequate information on the health/cardiac status of the troublesome cases before immunization. Although a post-vaccination analysis, which includes an EKG, can confirm the presence of myocarditis, it is impossible to establish a link between heart disease and the COVID-19 vaccine. There is still a potential that you will have medical issues simultaneously. Dengue fever, for example, can induce cardiac problems if it co-occurs.

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Original Article

Monocyte Low-Density Lipoprotein Receptor-Related Protein 1 (LRP1) Expression Correlates with cIMT in Mexican Hypertensive Patients

Ricardo Gamboa et al. María José Jaramillo-Estrella María del Rocio Martínez-Alvarado Maria Elena Soto … Yazmin Estela Torres-Paz David de Gonzalo-Calvo Leonardo Del Valle-Mondragón Rebeca López-Marure Vicenta C. Llorente-Cortés Claudia Huesca-Gómez

Abstract

Background

Arterial hypertension (HTA) represents a major risk factor for cardiovascular morbidity and mortality. It is not yet known which specific molecular mechanisms are associated with the development of essential hypertension.

Objective

In this study, we analyzed the association between LRP1 monocyte mRNA expression, LRP1 protein expression, and carotid intima media thickness (cIMT) of patients with essential hypertension.

Methods

The LRP1 monocyte mRNA expression and protein levels and cIMT were quantified in 200 Mexican subjects, 91 normotensive (NT) and 109 hypertensive (HT). Statistical significance was defined as p < 0.05.

Results

HT patients group had highly significant greater cIMT as compared to NT patients (p=0.002) and this correlated with an increase in the expression of LRP1 mRNA expression (6.54 vs. 2.87) (p = 0.002) and LRP1 protein expression (17.83 vs. 6.25), respectively (p = 0.001). These differences were maintained even when we divided our study groups, taking into account only those who presented dyslipidemia in both, mRNA (p = 0.041) and proteins expression (p < 0.001). It was also found that Ang II mediated LRP1 induction on monocytes in a dose and time dependent manner with significant difference in NT vs. HT (0.195 ± 0.09 vs. 0.226 ± 0.12, p = 0.046).

Conclusion

An increase in cIMT was found in subjects with hypertension, associated with higher mRNA and LRP1 protein expressions in monocytes, irrespective of the presence of dyslipidemias in HT patients. These results suggest that LRP1 upregulation in monocytes from Mexican hypertensive patients could be involved in the increased cIMT. (Arq Bras Cardiol. 2021; 116(1):56-65)