THC Delta 9 + CBD

"Delta-9-tetrahydrocannabinol (Delta-9-THC) is the primary psychoactive ingredient [in marijuana]; depending on the particular plant, either THC or cannabidiol is the most abundant cannabinoid in marijuana. ... 

[T]he effects of THC are included among the effects of marijuana, but not all the effects of marijuana are necessarily due to THC. ... Cannabinoids are produced in epidermal glands on the leaves (especially the upper ones), stems, and the bracts that support the flowers of the marijuana plant. Although the flower itself has no epidermal glands, it has the highest cannabinoid content anywhere on the plant, probably because of the accumulation of resin secreted by the supporting bracteole (the small leaf-like part below the flower). ... 

Delta-9-THC and Delta-8-THC are the only compounds in the marijuana plant that produce all the psychoactive effects of marijuana. Because Delta-9-THC is much more abundant than Delta-8-THC, the psychoactivity of marijuana has been attributed largely to the effects of Delta-9-THC. ... 

All recent studies have indicated that the behavioral effects of THC are receptor mediated. Neurons in the brain are activated when a compound binds to its receptor, which is a protein typically located on the cell surface. Thus, THC will exert its effects only after binding to its receptor. ... Binding to a receptor triggers an event or a series of events in the cell that results in a change in the cell's activity, its gene regulation, or the signals that it sends to neighboring cells."

Sept. 4, 2008 — Chemicals in marijuana may be useful in fighting MRSA, a kind of staph bacterium that is resistant to certain antibiotics.

Researchers in Italy and the U.K. tested five major marijuana chemicals called cannabinoids on different strains of MRSA (methicillin-resistant Staphylococcus aureus). All five showed germ-killing activity against the MRSA strains in lab tests. Some synthetic cannabinoids also showed germ-killing capability. The scientists note the cannabinoids kill bacteria in a different way than traditional antibiotics, meaning they might be able to bypass bacterial resistance.

At least two of the cannabinoids don’t have mood-altering effects, so there could be a way to use these substances without creating the high of marijuana. (NORML note: by this author’s count, four of the five cannabinoids tested in this study lack demonstrable psychoactivity.)

MRSA, like other staph infections, can be spread through casual physical contact or through contaminated objects. It is commonly spread from the hands of someone who has it. This could be in a health care setting, though there have also been high-profile cases of community-acquired MRSA.

It is becoming more common for healthy people to get MRSA, which is often spread between people who have close contact with one another, such as members of a sports team. Symptoms often include skin infections, such as boils. MRSA can become serious, particularly for people who are weak or ill.

In the study, published in the Journal of Natural Products, researchers call for further study of the antibacterial uses of marijuana. There are “currently considerable challenges with the treatment of infections caused by strains of clinically relevant bacteria that show multi-drug resistance,” the researchers write. New antibacterials are urgently needed, but only one new class of antibacterial has been introduced in the last 30 years. “Plants are still a substantially untapped source of antimicrobial agents,” the researchers conclude.