Category Archives: THC (Delta-9-Tetrahydrocannabinol)

Controlled Inhalation of Tetrahydrocannabinol-Predominant Cannabis Flos Mitigates Severity of Post-Traumatic Stress Disorder Symptoms and Improves Quality of Sleep and General Mood in Cannabis-Experienced UK Civilians: A Real-World, Observational Study

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“Introduction: Approximately 4% of the UK population experiences PTSD. Individuals must exhibit symptoms across four clusters to receive a diagnosis: intrusion, avoidance, altered reactivity, and altered mood. Evidence suggests that cannabinoid agonists such as nabilone and tetrahydrocannabinol (THC) may alleviate PTSD symptoms. We investigated the safety and effectiveness of THC-predominant cannabis flowers for inhalation to manage PTSD symptoms in a real-world setting.

Methods: We analysed data from the UK patient registry, T21. Validated questionnaires were used to collect PROMs for health-related quality of life (HRQoL), mood/anxiety, sleep, and PTSD-specific symptoms. Inclusion criteria were (i) a confirmed diagnosis of PTSD, (ii) completed PROMs questionnaires at baseline and at the 3-month follow-up, and (iii) received a prescription for a chemotype 1 (THC-predominant) cannabis flower.

Results: Fifty-eight patients were included, 34 of which also had PROMs recorded at 6 months. Most were males (65.5%) with an average age of 39.2 years who had previously used cannabis illicitly (95.6%). At 3 months, participants reported significant improvements in overall health, mood, and sleep quality (p < 0.001) but not in the proxy for HRQoL (p = 0.052). Similarly, participants reported substantial benefits in managing intrusion symptoms (p < 0.001), mood alterations (p < 0.001), and reactivity alterations (p = 0.002), which were sustained or further improved at 6 months. Participants did not report any side effects associated with CBMPs.

Conclusions: Inhalation of THC is well tolerated and useful for managing symptoms of PTSD in cannabis-experienced individuals. However, further research is needed to evaluate the long-term safety and outcomes of controlled inhalation of CBMP in patients naïve to cannabis.”

https://pubmed.ncbi.nlm.nih.gov/39474239/

“Results from this observational study suggest an association between treatment with THC-predominant cannabis flowers and symptomatic improvement for up to 6 months in a cohort of UK civilians diagnosed with PTSD. The treatment was safe and well tolerated and characterized by marked effects on quality of sleep, general mood, and severity of PTSD-associated symptoms. Despite previous exposure to cannabis, participants continued to report benefits after initiating treatment with THC-predominant cannabis flowers.”

https://karger.com/mca/article/7/1/149/912500/Controlled-Inhalation-of-Tetrahydrocannabinol

A recent update on the antibacterial effects of distinct bioactive molecules derived from the Cannabis plant

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“The number of human infections with multidrug-resistant (MDR) bacteria is increasing worldwide and constitutes a serious threat to human health. Given the lack of novel antibiotic compounds worsening this dilemma, alternative antibiotic-independent treatment and prevention strategies of infectious diseases applying natural compounds appear highly appreciable.

Given the long-known health-beneficial and disease-alleviating properties of Cannabis, we performed a literature search summarizing current knowledge regarding the antibacterial effects of extracts from different parts of the Cannabis sativa plant and of defined Cannabis-derived molecules and their potential mode of action.

The included studies revealed that various extracts and essential oils of C. sativa as well as major cannabinoids exerted potent activities against a broad spectrum of Gram-positive bacteria and against some Gram-negative bacterial species including MDR strains. Particularly the disruption of the bacterial cytoplasmic membrane by some cannabinoids resulted in potent antibacterial effects against Gram-positive bacteria including methicillin-resistant Staphylococcus aureus. Furthermore, defined cannabinoids inhibited the formation of and eradicated existing bacterial biofilms.

In conclusion, given their antibacterial properties distinct Cannabis-derived molecules expand the repertoire of antibiotics-independent treatment options in the combat of bacterial infectious diseases which should be further addressed in future studies including clinical trials.”

https://pubmed.ncbi.nlm.nih.gov/39470741/

“Collectively, results from the here reviewed studies open future perspectives for cannabis-derived molecules as alternative antibiotic-independent treatment and prevention strategies in the combat of bacterial infectious diseases which should be further addressed in future studies including clinical trials.”

https://akjournals.com/view/journals/1886/aop/article-10.1556-1886.2024.00098/article-10.1556-1886.2024.00098.xml

The molecular anti-metastatic potential of CBD and THC from Lebanese Cannabis via apoptosis induction and alterations in autophagy

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“The medicinal plant Cannabis sativa L. (C. sativa) is currently being extensively studied to determine the full extent of its therapeutic pharmacological potential. Δ9-tetrahydocannabinol (THC) and cannabidiol (CBD) are the most thoroughly investigated compounds.

We aimed to explore the anticancer activity of cannabinoids mixture isolated from the Lebanese C. sativa plant in ratios comparable to the local medicinal plant, to elucidate its mechanism of action in breast cancer cells in vitro.

Cells were subjected to cytotoxicity assay, cell cycle analysis, Annexin V/PI dual staining, cell death ELISA, immunofluorescence, in addition to western blot analysis of apoptotic and autophagy markers. We further evaluated the anti-metastatic effect of cannabinoids on MDA-MB-231 using the scratch wound-healing, trans-well migration and invasion assays.

Our results revealed the promising therapeutic benefits of CBD/THC on inhibiting the growth of breast cancer cells by promoting cellular fragmentation, phosphatidylserine translocation to the outer membrane leaflet and DNA fragmentation in both cell lines while inhibiting the motility of the triple negative breast cancer cells.

In our study, CBD/THC mixture was found to exhibit a pro-apoptotic activity via the activation of the mitochondrial apoptotic pathway, independent from ROS production while also suggesting the activation of a caspase-dependent apoptotic pathway. Even though autophagy was altered upon exposure to the cannabinoid mixture, our data suggested that it is not the mechanism responsible of inducing cell death.

In conclusion, our study demonstrates the promising therapeutic benefits of CBD and THC isolated from the Lebanese C. sativa plant on breast cancer cells in vitro.”

https://pubmed.ncbi.nlm.nih.gov/39463375/

“Our study showed that CBD and THC isolated from the Lebanese cannabis strains, in ratios comparable to the medicinal plants, exhibit promising effect on breast cancer cell lines. The anticancer activity of this mixture was revealed by its ability to promote cellular fragmentation, phosphatidylserine translocation and DNA fragmentation while inhibiting the motility of aggressive breast cancer cells. Our results showed a pro-apoptotic activity on MDA-MB-231 and MCF-7 cells via the activation of the intrinsic apoptotic pathway. Moreover, we found that even if autophagy was altered in breast cancer cell lines, it is not the major mechanism leading to cellular death. Also, we demonstrated that this mixture was effective in halting the progression of breast cancer cells via the suppression of cancer cell migration and invasion.”

https://www.nature.com/articles/s41598-024-76340-x

Harnessing Cannabis sativa Oil for Enhanced Skin Wound Healing: The Role of Reactive Oxygen Species Regulation

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“Cannabis sativa emerges as a noteworthy candidate for its medicinal potential, particularly in wound healing. This review article explores the efficacy of cannabis oil in reducing reactive oxygen species (ROS) during the healing of acute and chronic wounds, comparing it to the standard treatments.

ROS, produced from various internal and external sources, play a crucial role in wound development by causing cell and tissue damage. Understanding the role of ROS on skin wounds is essential, as they act both as signaling molecules and contributors to oxidative damage.

Cannabis oil, recognized for its antioxidant properties, may help mitigate oxidative damage by scavenging ROS and upregulating antioxidative mechanisms, potentially enhancing wound healing.

This review emphasizes ongoing research and the future potential of cannabis oil in dermatological treatments, highlighted through clinical studies and patent updates. Despite its promising benefits, optimizing cannabis oil formulations for therapeutic applications remains a challenge, underscoring the need for further research to realize its medicinal capabilities in wounds.”

https://pubmed.ncbi.nlm.nih.gov/39458608/

“Cannabis oil, especially its primary bioactive constituents, CBD and THC, demonstrates considerable potential in facilitating skin wound healing by modifying oxidative stress via the regulation of reactive oxygen species. CBD’s therapeutic effects in wound healing are largely attributed to its antioxidant, anti-inflammatory, and antimicrobial properties. Increased ROS levels can hinder wound healing by exacerbating inflammation and cellular damage; however, CBD’s antioxidant properties mitigate these effects, fostering a more conducive environment for tissue regeneration. Additionally, the antibacterial and analgesic properties of cannabis contribute to reducing the microbial load and minimizing the complications associated with chronic wounds, thereby enhancing the overall healing efficacy. Integrating cannabis oil into drug delivery systems for wound management represents a promising strategy for treating both acute and chronic wounds.”

https://www.mdpi.com/1999-4923/16/10/1277

Cannabis-Based Phytocannabinoids: Overview, Mechanism of Action, Therapeutic Application, Production, and Affecting Environmental Factors

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“This review provides an overview of cannabis-based phytocannabinoids, focusing on their mechanisms of action, therapeutic applications, and production processes, along with the environmental factors that affect their quality and efficacy.

Phytocannabinoids such as THC (∆9-tetrahydrocannabinol), CBD (cannabidiol), CBG (cannabigerol), CBN (cannabinol), and CBC (cannabichromene) exhibit significant therapeutic potential in treating various physical and mental health conditions, including chronic pain, epilepsy, neurodegenerative diseases, skin disorders, and anxiety.

The cultivation of cannabis plays a crucial role in determining cannabinoid profiles, with indoor cultivation offering more control and consistency than outdoor methods. Environmental factors such as light, water, temperature, humidity, nutrient management, CO2, and the drying method used are key to optimizing cannabinoid content in inflorescences.

This review outlines the need for broader data transfer between the health industry and technological production, especially in terms of what concentration and cannabinoid ratios are effective in treatment. Such data transfer would provide cultivators with information on what environmental parameters should be manipulated to obtain the required final product.”

https://pubmed.ncbi.nlm.nih.gov/39457041/

“Phytocannabinoids, including THC, CBD, CBG, CBN, and CBC, present broad therapeutic potential in a wide range of physical and mental conditions. They have shown efficacy in treating chronic pain, reducing seizure activity, slowing neurodegenerative processes, psoriasis, acne, loss of appetite, sleep disorders, and psychosis. Dose dependence was notable in most cases, and thus, this requires careful management.”

https://www.mdpi.com/1422-0067/25/20/11258

Unveiling the Potential of Phytocannabinoids: Exploring Marijuana’s Lesser-Known Constituents for Neurological Disorders

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“Cannabis sativa is known for producing over 120 distinct phytocannabinoids, with Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD) being the most prominent, primarily in their acidic forms.

Beyond Δ9-THC and CBD, a wide array of lesser-known phytocannabinoids, along with terpenes, flavonoids, and alkaloids, demonstrate diverse pharmacological activities, interacting with the endocannabinoid system (eCB) and other biological pathways. These compounds, characterized by phenolic structures and hydroxyl groups, possess lipophilic properties, allowing them to cross the blood-brain barrier (BBB) effectively.

Notably, their antioxidant, anti-inflammatory, and neuro-modulatory effects position them as promising agents in treating neurodegenerative disorders. While research has extensively examined the neuropsychiatric and neuroprotective effects of Δ9-THC, other minor phytocannabinoids remain underexplored. Due to the well-established neuroprotective potential of CBD, there is growing interest in the therapeutic benefits of non-psychotropic minor phytocannabinoids (NMPs) in brain disorders.

This review highlights the emerging research on these lesser-known compounds and their neuroprotective potential. It offers insights into their therapeutic applications across various major neurological conditions.”

https://pubmed.ncbi.nlm.nih.gov/39456229/

“In summary, the therapeutic potential of cannabis sativa extends well beyond the widely studied CBD, encompassing a diverse range of lesser-known phytocannabinoids that show promise in addressing various neurological disorders. The neuroprotective functions of these NMPs, particularly their antioxidant, anti-inflammatory, and immune-modulating properties, offer new avenues for research and treatment. While the pharmacological mechanisms of many NMPs remain underexplored, emerging studies suggest their potential to develop novel therapies for brain disorders. As research continues to unfold, these findings could pave the way for innovative cannabinoid plant-based treatments that go beyond the scope of traditional approaches, offering new hope in neuroprotection and disease management.”

https://www.mdpi.com/2218-273X/14/10/1296

In Vitro Antitumor Effect of Oils Rich in CBD and THC Cannabis Extract in Canine Prostate Carcinoma Cell Lines

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“Prostate cancer is one of the leading causes of cancer-related deaths worldwide, even when diagnosed at an early stage in humans and dogs. Dogs have a significant incidence of spontaneous prostate cancer, which is highly similar to human androgen-independent prostate cancer and represents a valuable model for comparative studies.

Cannabidiol (CBD) and Δ9-tetrahydrocannabinol (THC) are the two main cannabinoids extracted from Cannabis sativa and have demonstrated antiproliferative and anti-invasive properties in different tumor types.

In this study, CBD or THC-rich extracts inhibited the proliferation of two canine prostatic carcinoma cell lines, PC1 and PC2, showing an IC50 of 3.43 and 3.57 μM for CBD rich extracts, and 4.90 and 4.48 μM THC rich extracts, respectively. Cell death was also observed with both Annexin V and Propidium iodide staining for the canine cell lines.

These results provide new information concerning the use of rich oil in canine PC and open a promising opportunity for further in vitro and in vivo studies to establish the mechanisms of action of these compounds using dogs as a natural model for prostatic carcinoma.”

https://pubmed.ncbi.nlm.nih.gov/39453093/

“Cannabidiol and Δ9-tetrahydrocannabinol are the two main components of Cannabis sativa and have been shown to have anti-cancer properties. In this study, extracts rich in cannabidiol or Δ9-tetrahydrocannabinol inhibited the growth of two canine prostate carcinoma cell lines. These results provide new information about the use of these natural compounds in canine models, which gives us the opportunity for further studies, both in the laboratory and in animals, to discover how these compounds act in the body, using dogs as a natural model for prostate carcinoma.”

https://www.mdpi.com/2306-7381/11/10/501

Phytocannabinoids restore seizure-induced alterations in emotional behaviour in male rats

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“Epilepsy often presents with severe emotional comorbidities including anxiety and abnormal fear responses which impose a significant burden on, and reduce, quality of life in people living with the disease. Our lab has recently shown that kindled seizures lead to changes in emotional processing resulting from the downregulation of anandamide signalling within the amygdala.

Phytocannabinoids derived from the Cannabis sativa plant have attracted a lot of interest as a new class of drugs with potential anticonvulsant effects.

Among the wide number of compounds occurring in Cannabis sativa, Δ9- tetrahydrocannabinol (THC), the one responsible for its main psychoactive effects, and the nonpsychoactive cannabidiol (CBD) have been extensively examined under pre-clinical and clinical contexts to control seizures, however, neither have been assessed in the context of the management of emotional comorbidities associated with seizure activity.

We used two behavioural procedures to assess anxiety- and fear-like responding in adult male Long-Evans rats: elevated plus maze and auditory fear conditioning.

In agreement with previous reports, we found seizure-induced increases in anxiety- and fear-like responding. These effects were reversed by either CBD (vaporized) or THC (oral). We also found that antagonism of serotonin 1 A receptors prior to CBD exposure prevented its protective effects.

Phytocannabinoids offer a novel and reliable opportunity to treat seizure induced comorbid emotional alterations.”

https://pubmed.ncbi.nlm.nih.gov/39433952/

https://www.nature.com/articles/s41386-024-02005-y

An early economic analysis of medical cannabis for the treatment of chronic pain

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“Background: Cannabis-based medicinal products (CBMPs) are increasingly demonstrating effectiveness in treating a wide range of conditions, with a relatively high safety profile in clinical usage compared to other prescription pain medications and few contraindications. Consultation and other prescription-related costs are, at present, higher for CBMPs than for some other treatment options, leading to some concern around wider prescribing.

Research design and methods: An early cost-effectiveness model was developed to estimate the impact of prescribing CBMPs alone and/or in addition to analgesics, physiotherapy, and cognitive behavioral therapy for chronic pain in the UK for 1 year.

Results: Due to their comparative effectiveness, CBMPs were found to be cost saving. Various scenarios were model tested; in all scenarios where CBMPs decrease pain-level states, less resource use is required. Increased efficacy of 5% was conservatively assumed based on current Real-World Evidence. In this scenario, CBMPs were significantly more cost-effective, and as costs relating to the prescribing of these continue to fall, relative savings are predicted to increase.

Conclusion: These findings highlight the substantial cost saving that CBMPs may represent for the treatment of chronic pain patients, and the benefits for healthcare providers as a treatment for this often hard-to-treat population.”

https://pubmed.ncbi.nlm.nih.gov/39415537/

https://www.tandfonline.com/doi/full/10.1080/14737167.2024.2412248

Association Between Medical Marijuana Cardholder Status and Antiemetic Overuse

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“Introduction: The conscientious prescribing of antiemetics by chemotherapy-induced nausea and vomiting (CINV) risk was highlighted in the American Society of Clinical Oncology (ASCO) “Choosing Wisely” recommendations. The pharmacologic properties of medical marijuana (MMJ) may allow for decreased incidence of CINV; however, little is known about the effects of MMJ on the use of antiemetics. This study aimed to determine if MMJ cardholder status, which enables access to MMJ, is associated with antiemetic overuse among patients with cancer. 

Materials and Methods: This population-based secondary data analysis examined a retrospective cohort derived from the linked Arkansas All Payers Claims Database (2013-2020) and MMJ cardholder registry (2013-2019). The cohort consisted of 20,558 patients with cancer aged 18 and older with a chemotherapy claim in an outpatient setting within 12 months of a cancer diagnosis. Exposure was a registration to receive an MMJ card that permitted access to MMJ. The primary outcome of interest was antiemetic overuse, as characterized by the ASCO recommendation. Antiemetic use associated with chemotherapy was identified through filled prescriptions and medical claims. Multivariable logistic regression, adjusted for baseline demographic and prescription characteristics, was used to calculate the adjusted odds ratios (aOR) of antiemetic overuse among MMJ cardholders compared with non-MMJ cardholders. 

Results: Among 20,558 eligible patients, 436 (2.1%) had an MMJ card at some point in the study period. Antiemetic overuse was identified in 7.5% of chemotherapy cycles. Compared with non-MMJ cardholders, MMJ cardholders were less likely to experience antiemetics overuse (aOR: 0.76, p < 0.001). Patients with fewer chemotherapy cycles and younger in age had higher odds of antiemetic overuse compared with those with more chemotherapy cycles. The risk of antiemetic overuse did not differ based on gender and rurality of residency. Route of chemotherapy administration, CINV risk category, and type of cancer also impacted the odds of antiemetic overuse. 

Discussion: The findings indicate that MMJ cardholders are significantly less likely to experience antiemetic overuse than non-MMJ cardholders. Further investigation into the use, effectiveness, and safety of cannabis for CINV mitigation is needed to inform patient and provider decision-making.”

https://pubmed.ncbi.nlm.nih.gov/39419579/

https://www.liebertpub.com/doi/10.1089/can.2024.0083