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UofSC researchers reveal how THC may treat acute respiratory distress syndrome

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COLUMBIA, SC - Acute Respiratory Distress Syndrome (ARDS), when caused by a bacterial toxin known as Staphylococcal enterotoxin, can be completely prevented by treatment with Δ9-tetrahydrocannabinol (THC), a cannabinoid found in the cannabis plant. This exciting finding, recently published in the highly cited British Journal of Pharmacology also suggests a possible treatment for ARDS caused by COVID-19.

This new paper is based on research studies from the laboratories of Dr. Mitzi Nagarkatti and Dr. Prakash Nagarkatti at the University of South Carolina (UofSC) School of Medicine, Department of Pathology, Microbiology and Immunology. The Nagarkattis published "Protective Effects of Δ9-Tetrahydrocannabinol Against Enterotoxin-induced Acute Respiratory Distress Syndrome is Mediated by Modulation of Microbiota," with co-authors Amira Mohammed, Hasan Alghetaa and Juhua Zhou, who also work in their UofSC School of Medicine laboratories, and Saurabh Chatterjee from the UofSC Arnold School of Public Health. Drs. Mitzi and Prakash Nagarkatti have for years studied how plant-derived compounds can be used to prevent and reduce inflammation throughout the body.

The incidence of ARDS in the United States is 78.9 per 100,000 persons/year and the mortality rate is 38.5 percent. When inhaled, Staphylococcal enterotoxin can cause ARDS by activating immune cells to produce massive amounts of cytokines leading to "cytokine storm," which can cause the lungs and other organs to fail, often resulting in death. This immune process is similar to that seen in patients with severe COVID-19 who are admitted to the hospital and develop ARDS accompanied by cytokine storm, which leads to respiratory and multi-organ failure. These studies therefore raise the exciting possibility of using cannabinoids to treat ARDS seen in COVID-19 patients.

These studies also showed that Staphylococcal enterotoxin alters the microbiome in the lungs leading to the emergence of pathogenic microbiota. But THC helps this symptom too, by promoting beneficial bacteria that suppress inflammation thereby preventing the damage to the lungs.

"Acute respiratory distress syndrome is triggered by a variety of etiologic agents. Currently, there are no FDA-approved drugs to treat ARDS because of which the mortality rate is close to 40 percent. Our studies suggest that THC is highly effective to treat ARDS and thus, clinical trials are critical to investigate if this works," said Mitzi Nagarkatti.

"Cytokine storm is a huge clinical issue which leads to multiorgan failure and often death. It is also seen in COVID-19 patients, and there are no effective treatment modalities against this syndrome. We have been working on cannabinoids for over 20 years and found that cannabinoids such as THC are highly anti-inflammatory. Thus, our studies raise the exciting suggestion to test THC against ARDS seen in COVID-19 patients," said Prakash Nagarkatti.

 

Source: https://www.eurekalert.org/pub_releases/2020-08/uosc-urr082620.php

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I can relate one incident that happened to me. When I was young, I was VERY allergic to pollen from grasses. I'd get an asthmatic reaction from it. One bad "June grass" season, I could barely breath and couldn't sleep. So I was sitting there, listening to the radio, and decided to do a bong, against my instincts about doing a bong when you can barely breathe.

My lungs cleared up instantly.

It was 1979, so I think it's safe to say it was either Colombian Gold or my homegrown, which was also Colombian Gold, but Connecticut grown.

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