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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Med+Hypotheses
2020 ; 143
(ä): 109883
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The association between obesity and poor outcome after COVID-19 indicates a
potential therapeutic role for montelukast
#MMPMID32492562
Almerie MQ
; Kerrigan DD
Med Hypotheses
2020[Oct]; 143
(ä): 109883
PMID32492562
show ga
It is widely believed that infection with the SARS-CoV-2 virus triggers a
disproportionate immune response which causes a devastating systemic injury,
particularly in individuals with obesity, itself a chronic, multi-organ
inflammatory disease. Immune cells accumulate in visceral adipose tissue and
together with paracrine adipocytes release a wide range of biologically active
cytokines (including IL-1?, IL5, IL6 and IL8) that can result in both local,
pulmonary and systemic inflammation. A more intense 'cytokine storm' is
postulated as the mechanism behind the extreme immune response seen in severe
COVID-19. It is striking how dangerous the combination of obesity and COVID-19
is, resulting in a greater risk of ICU admission and a higher mortality.
Furthermore, patients from a BAME background appear to have increased mortality
after SARS-CoV-2 infection; they also have a higher prevalence of central obesity
and its metabolic complications. In the absence of an effective vaccine, the
therapeutic potential of immune-modulating drugs is a priority, but the
development of new drugs is expensive and time-consuming. A more pragmatic
solution would be to seek to repurpose existing drugs, particularly those that
might suppress the heightened cytokine activity seen in obesity, the major risk
factor for a poor prognosis in COVID-19. Montelukast is a cysteinyl leukotriene
receptor antagonist licensed to treat asthma and allergic rhinitis. It has been
shown to diminish pulmonary response to antigen, tissue eosinophilia and IL-5
expression in inflammatory cells. It has also been shown to decrease elevated
levels of IL-1? and IL8 in humans with viral upper respiratory tract infections
compared with placebo-treated patients. In addition, in silico studies have
demonstrated a high binding affinity of the montelukast molecule to the terminal
site of the virus's main protease enzyme which is needed for virus RNA synthesis
and replication. Montelukast, which is cheap, safe and widely available would
appear to have the potential to be an ideal candidate drug for clinical trials,
particularly in early stage disease before irreparable tissue damage has already
occurred. HYPOTHESIS: Through a direct anti-viral effect, or by suppression of
heightened cytokine release in response to SARS-CoV-2, montelukast will reduce
the severity of immune-mediated multiorgan damage resulting from COVID-19,
particularly in patients with central obesity and metabolic syndrome.