20200331 Day 91: How Chloroquine affects Viruses in the Multiverse


A composite of some of the ways Chloroquine acts as an antiviral in the multiverse. From Devaux, et. al. Mar. 2020 https://doi.org/10.1016/j.ijantimicag.2020.105938

Since I’m posting a day late and trying to catch back up, I wanted to make a short post about this recent journal article which summarizes past research on the antiviral properties of Chloroquine. Since the COVID-19 pandemic is such a big effect on the world right now, I was curious if ripples of this event could be felt in the past. I found the following:

1. Effects of Chloroquine on viral infections, an old drug against today’s diseases, Savarino et. al., Nov. 2003

We raise the question of whether this old drug whose parent compound, quinine, was isolated in the late 19th century from the bark of the tropical cinchona tree, may experience a revival in the clinical management of viral diseases of the era of globalisation.

and also this quote seems relevant due to possibility that SARS-CoV-2 induced cytokine storm is being seen in some COVID-19 patients:

The chloroquine/hydroxychloroquine-induced suppression of the synthesis of pro-inflammatory cytokines such as TNFα may be beneficial in decreasing the inappropriate immune activation characteristic of HIV infection.

and this suppression of the synthesis of pro-inflammatory cytokines is also given as a hypothetical mechanism of action in SARS cases.

Hypothetical model for the potential effects of chloroquine (CQ) on the immunopathogenesis of severe acute respiratory syndrome (SARS). Proinflammatory cytokines are thought to be important in acute respiratory distress syndrome (ARDS). We hypothesise that chloroquine (black arrow), by inhibiting TNFα and interleukin 6 (IL6) production, might block the subsequent cascade of events, which leads to ARDS. (https://doi.org/10.1016/S1473-3099(03)00806-5)

and this final summary of the paper deserves special recognition:

Finally, we want to share with the scientific community the speculative hypothesis that chloroquine/hydroxychloroquine, due to its antiviral and anti-inflammatory properties, may have some effect on SARS. We emphasise the need of testing in cell cultures infected with SARS coronavirus the effects of chloroquine, as well as those ofother substances possessing in-vitro activity against members of the coronaviridae family. We should remember that the possibility of new outbreaks of SARS cannot be excluded. In the absence of effective inhibitors of SARS coronavirus, the possibility of an inhibition, at least in vitro, of the replication of this virus would represent a breakthrough in the knowledge of SARS.

2. Chloroquine is a potent inhibitor of SARS coronavirus infection and spread, Vincent et. al, Aug. 2005

We have identified chloroquine as an effective antiviral agent for SARS-CoV in cell culture conditions, as evidenced by its inhibitory effect when the drug was added prior to infection or after the initiation and establishment of infection. The fact that chloroquine exerts an antiviral effect during pre- and post-infection conditions suggest that it is likely to have both prophylactic and therapeutic advantages.

3. New Insights into the antiviral effects of chloroquine, Savarino et. al., Feb. 2006

The broad spectrum antiviral effects of chloroquine deserve particular attention in a time in which the world is threatened by the possibility of a new influenza pandemic, and the availability of effective drugs would be fundamental during evaluation of an effective vaccine.


Author: J. Sands Loch

Student and teacher of reality in all its forms. I self-published my personal experience of discovering and trying to understand and use a model of reality based on the Many Worlds Interpretation of Quantum Mechanics: Surfing the Multiverse: Finding Happiness One Universe at a Time Available on Kindle and from Amazon, and found in blog post form at: SurfingTheUniverse.com

One thought on “20200331 Day 91: How Chloroquine affects Viruses in the Multiverse”

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: