this post was submitted on 01 Aug 2024
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[–] [email protected] 10 points 3 months ago* (last edited 3 months ago) (18 children)

One would think the same would apply for a cat.

Yes, and that's a bit of a wrong assumption because cats don't have the same enzymes we do, and even if they did, their physiology doesn't allow for the same quantity of expression. For example, if a cleaving enzyme is anchored to the lumen of their liver, lungs, or kidneys, the surface area of those tissues may not be enough to reduce the concentration in the blood, If they have an alternate gene that does the same thing, it's usually less effective or it could produce prodrugs that may be more toxic than the original. Also, the bioavailability of drugs largely depends on the route of exposure which is very short for cats because they have a shorter respiratory tract and the blood volume is magnitudes smaller.

In short, couple the rate of exposure with the volume of blood and a lower rate of metabolism, and your cat can reach higher levels of the drug in the blood than you'd expect more quickly. You can't rely on what is toxic to humans to translate to another species and vice-versa or we'd have a lot more productive studies on mice.

As for the evidence, I'm sorry but I'm gonna have to outsource that to Consensus via ChatGPT which usually does a good job finding relevant science articles because I'm not well-versed in the literature. I hope it doesn't bother you but I don't have the time or energy to do it myself right now.

Behavioral Changes:

A case of a 6-year-old Persian cat exposed to marijuana smoke showed severe agitation, aggression, and alternating states of apathy and agitation. Blood tests confirmed the presence of delta-9-tetrahydrocannabinol (THC) and its metabolites (Janeczek et al., 2018).

Neurological Symptoms: Exposure to cannabis can lead to neurological symptoms such as mydriasis (dilated pupils), altered consciousness, and behavioral changes, which can persist and require hospitalization (Brutlag & Hommerding, 2018).

Cardiovascular and Respiratory Effects:

Systemic Effects: Cannabis extract and THC can cause hypotension (low blood pressure), bradycardia (slow heart rate), and respiratory depression in cats, indicating significant systemic impact (Graham & Li, 1973).

Safety and Tolerability:

Dosing Studies: Research on escalating doses of THC and CBD in cats showed that high doses can lead to adverse events such as lethargy, ataxia (loss of control of body movements), and hypothermia. These effects are dose-dependent but are generally transient and resolve without medical intervention (Kulpa et al., 2021).

Veterinary Reports:

Incidence and Treatment: Surveys of veterinarians in North America indicate that cannabis toxicosis in pets, including cats, is increasingly reported, especially with the rising accessibility of cannabis products. Most cases are treated with outpatient monitoring and supportive care (Amissah et al., 2021).

The direct evidence is scant because of the legal limits on research. But the point is the type and extent of symptoms that these pets experience like hypothermia, hypotension, bradycardia, etc. that are alarming. Also, the rates of hospitalizations are increasing and that's a huge danger sign now with legalization.

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