Treatment Clinical Trial
Official title:
Protective Effect of Aspirin on COVID-19 Patients
COVID-19 has a high infection rate and mortality, and serious complications such as heart
injury cannot be ignored. Cardiac dysfunction occurred in COVID-19 patients, but the law and
mechanism of cardiac dysfunction remains unclear. The occurrence of progressive inflammatory
factor storm and coagulation dysfunction in severe and fatal cases of NCP points out a new
direction for reducing the incidence of severe and critically ill patients, shortening the
length of duration in severe and critically ill patients and reducing the incidence of
complications of cardiovascular diseases. Aspirin has the triple effects of inhibiting virus
replication, anticoagulant and anti-inflammatory, but it has not received attention in the
treatment and prevention of NCP. Although Aspirin is not commonly used in the guidelines for
the treatment of NCP, it was widely used in the treatment and prevention of a variety of
human diseases after its first synthesis in 1898. Subsequently, aspirin has been confirmed to
have antiviral effect on multiple levels. Moreover, one study has confirmed that aspirin can
inhibit virus replication by inhibiting prostaglandin E2 (PGE2) in macrophages and
upregulation of type I interferon production. Subsequently, pharmacological studies have
found that aspirin as an anti-inflammatory and analgesic drug by inhibiting cox-oxidase
(COX). Under certain conditions, the platelet is the main contributor of innate immune
response, studies have found that in the lung injury model in dynamic neutrophil and platelet
aggregation.
In summary, the early use of aspirin in covid-19 patients, which has the effects of
inhibiting virus replication, anti-platelet aggregation, anti-inflammatory and anti-lung
injury, is expected to reduce the incidence of severe and critical patients, shorten the
length of hospital duration and reduce the incidence of cardiovascular complications.
1. COVID-19 has a high infection rate and mortality, and serious complications such as
heart injury cannot be ignored.
At present, the scale and harm of COVID 19 (Novel coronavirus pneumonia (NCP) has far
surpassed that of SARS in 2003, with more than 80,000 cases confirmed in China and 3,119
deaths due to the disease. The total mortality rate is 2.1%, among which the mortality
rate in wuhan is still as high as 4.8%. The main causes of death of covid-19 are
currently thought to be acute respiratory failure, "immune factor storm" and coagulation
dysfunction caused by lung dysfunction, but heart injury cannot be ignored.
A recent article published in the Lancet by professor Bin Cao's team from china-japan
friendship hospital analyzed a total of 41 patients diagnosed with covid-19, including 6
(15%) patients with hypertension, 6 (15%) patients with cardiovascular disease, and 5
(12%) patients with acute myocardial injury after infection [1]. A study published in
the journal of the American medical association (JAMA) included 138 COVID-19 patients,
43 (31.2%) with hypertension and 20 (14.5%) with cardiovascular disease. At the same
time, data analysis found that a total of 77 (55.8%) patients had complications, among
which 10 (7.2%) had acute myocardial injury, 23 (16.7%) had arrhythmia, and the
incidence of cardiac complications in ICU patients was significantly higher than that in
general ward patients [2]. Therefore, the incidence of cardiac complications is high in
NCP patients, but the characteristics and mechanism of cardiac injury are still unclear.
To further explore the characteristics and mechanisms of cardiac injury in patients with
COVID-19 is of great scientific significance for us to propose new prevention and
treatment strategies for cardiac injury. Therefore, it is of great clinical significance
and social value to solve some problems in current clinical treatment through systematic
clinical research, to discuss the characteristics of heart injury in NCP patients, and
to explore standardized, safe and effective prevention and treatment programs for NCP
heart injury.
2. Cardiac dysfunction occurred in COVID-19 patients, but the law and mechanism of cardiac
dysfunction remains unclear.
Viral myocarditis refers to the myocardial localized or diffused acute or chronic
inflammatory lesions caused by viral infection, which is an infectious myocardial
disease. Multiple viruses (such as coxsackievirus group B virus, etc.) can cause
myocarditis after infection. Previous studies have found that SARS-CoV with high
homology of NCP can cause obvious myocardial injury. The autopsy reports found SARS-CoV
RNA in the myocardium of the SARS infected patient, as well as significant macrophage
infiltration and myocardial injury. Oudit et al. found that in patients with SARS-CoV
myocardial involvement, the expression of ACE-2 was also significantly decreased [3].
McLellan's team from the university of Texas at Austin has uploaded a novel coronavirus
to BioRxiv in a preprint of BioRxiv a cryo-electron microscope structure of S protein, a
key component of the virus. It turned out that the binding strength of the novel
coronavirus S protein to ACE-2 was about 15nM, 10 to 20 times that of the SARS virus
binding to ACE2. Therefore, NCP is likely to cause myocarditis directly.
Recently, in view of COVID - 19 deaths in patients with clinical analysis found that,
compared to surviving COVID - 19 patients, death cases appeared in the course of illness
progressive severe hypoxia (oxygen saturation significantly reduced), progressive
lymphocytes reduce, progressive increase in the number of white blood cells and
neutrophils, blood coagulation dysfunction (D - dimer significantly higher), and so on,
these phenomena are likely to cause or aggravate myocardial injury [2]. Cardiac and
pulmonary failure caused by severe myocardial injury is an important factor leading to
death in severe and critical COVID-19 patients. Therefore, it is urgent to strengthen
the early monitoring of cardiac function and myocardial enzyme spectrum of covid-19
patients, to identify the changes and characteristics of cardiac function in covid-19
patients, and to achieve early detection and early intervention, which is of great
significance to reduce the incidence of severe and critical patients and shorten the
hospitalization time of severe and critical patients.
3. The occurrence of progressive inflammatory factor storm and coagulation dysfunction in
severe and fatal cases of NCP points out a new direction for reducing the incidence of
severe and critically ill patients, shortening the length of duration in severe and
critically ill patients and reducing the incidence of complications of cardiovascular
diseases
Recently, studies from JAMA and Lancet reported that progressive d-dimer elevation
occurred in NCP deaths. Progressive lymphocytopenia and the number of leukocytes and
neutrophils increased progressively. The creatinine level increased rapidly from day 11,
but in the early course of the disease, the creatinine fluctuation was more obvious than
in the surviving patients, and the level was more likely to exceed the normal upper
limit. In addition, the levels of inflammatory factors (such as L2, IL7, IL10, GCSF,
P10, MCP1, MIP1A and TNF TNF) in critically ill ICU patients were significantly higher
than those in non-icu patients [1, 2]. The above evidence suggests that the increase of
neutrophils may be related to the cytokine storm caused by virus invasion. Clotting
activation may be associated with a persistent inflammatory response; Acute kidney
injury may be related to the direct effects of virus, hypoxia, and shock. All three of
these pathways may be cofactors in triggering death.
Once the cytokine storm occurs in infected patients, the disease will rapidly
deteriorate, leading to multiple organ failure. The heart is a common organ involved in
cytokine storms, including myocardial injury, stress cardiomyopathy, heart failure, and
malignant arrhythmia, each of which may lead to sudden death. Therefore, according to
these evidences, early coagulation intervention and anti-inflammatory therapy are
expected to reduce the incidence of severe and critically ill patients, shorten the
hospitalization time of severe and critically ill patients and reduce the incidence of
complications of cardiovascular diseases.
4. Aspirin has the triple effects of inhibiting virus replication, anticoagulant and
anti-inflammatory, but it has not received attention in the treatment and prevention of
NCP.
Although Aspirin is not commonly used in the guidelines for the treatment of NCP, it was
widely used in the treatment and prevention of a variety of human diseases after its first
synthesis in 1898. First, aspirin was first synthesized in 1898 and has been widely used in
the treatment and prevention of many human diseases. Subsequently, aspirin has been confirmed
to have antiviral effect on multiple levels [4]. However, one study published in Immunity in
2014, has confirmed that aspirin can inhibit virus replication by inhibiting prostaglandin E2
(PGE2) in macrophages and upregulation of type I interferon production [5]. Subsequently,
pharmacological studies have found that aspirin as an anti-inflammatory and analgesic drug by
inhibiting cox-oxidase (COX). Because it was first discovered by inhibiting the activity of
cox-oxidase (COX), inhibiting the synthesis of prostaglandin, inhibiting the aggregation of
white blood cells, reducing the formation of bradykinin, inhibiting the aggregation of
platelets and so on. Under certain conditions, the platelet is the main contributor of innate
immune response, studies have found that in the lung injury model in dynamic neutrophil and
platelet aggregation, and aspirin by promoting lipid oxygen element (Lipoxin, 15 - epi -
LXA4), and reduce the number of neutrophils and inhibition of neutrophil and platelet
aggregation, in inhibiting the inflammatory response and lung injury has a key role in the
model [6]. Compared with other NSAIDS, low-dose aspirin (less than 100 mg/ day) is highly
safe for long-term use and has fewer adverse events such as gastrointestinal bleeding. And a
recent meta-analysis published in JAMA Intern Med found that in the treatment of DVP in
patients with total hip or total knee replacement, The anticoagulant effect and side effects
of aspirin were not significantly different from other anticoagulants (dalteparin sodium,
Rivaroxaban, enoxaparin sodium, Warfarin sodium, Dihydroergotamine mesylate -- heparin
sodium) [7]. The dosages of aspirin used in the reviewed literature ranged from 81 mg/d to
325 mg/d, but the majority of the literature used 100 mg/d was consistent with our current
clinical dosages. A number of studies have found that aspirin also has other extensive
effects, such as anti-tumor [8], regulation of gestational hypertension [9], prevention of
preterm birth [10].
In summary, there is still a lack of effective drugs for the treatment of covid-19, and the
regularity and characteristics of myocardial injury in patients are unclear. In addition,
prevention and treatment strategies for myocardial injury in COVID-19 patients have not been
put on the agenda. The early use of aspirin in covid-19 patients, which also has the effects
of inhibiting virus replication, anti-platelet aggregation, anti-inflammatory and anti-lung
injury, is expected to reduce the incidence of severe and critical patients, shorten the
length of hospital duration and reduce the incidence of cardiovascular complications.
This project is based on important clinical issues, combined with the latest international
research progress, to explore the early use of aspirin enteric-coated tablets in covid-19
patients on the treatment of covid-19 and the prevention of cardiovascular complications, to
contribute to the prevention and control of the epidemic, undoubtedly has important
theoretical and application value.
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