Animal study



Molecules. 2022; 27(10):3327

Article name

Cannabidiol Improves Antioxidant Capacity and Reduces Inflammation in the Lungs of Rats with Monocrotaline-Induced Pulmonary Hypertension


Krzyżewska A, Baranowska-Kuczko M, Jastrząb A, Kasacka I, Kozłowska H

CBD Enhances Antioxidant Abilities and Reduces Inflammation in Rat Lungs

Pulmonary hypertension (PH) is a serious, incurable disease characterized by high blood pressure in the lungs. This study investigates the potential benefits of cannabidiol (CBD), a compound derived from the cannabis plant, in treating PH in rats. The researchers focused on the antioxidant and anti-inflammatory properties of CBD, which could potentially alleviate symptoms of PH.

About the Authors and Their Institution

The study was conducted by Hanna Kozłowska and her team from the Medical University of Bialystok, Poland. The team includes experts from the Department of Experimental Physiology and Pathophysiology, Department of Clinical Pharmacy, Department of Analytical Chemistry, and Department of Histology and Cytophysiology.

Main Findings

  • Chronic administration of CBD (10 mg/kg daily for 21 days) improved antioxidant capacity in the lungs of rats with PH.
  • CBD reduced inflammation in the lungs of these rats.
  • CBD decreased the expression of cannabinoid receptors type 1 (CB1-Rs), which are associated with proinflammatory signaling.


The researchers induced PH in rats using a compound called monocrotaline. They then administered CBD to these rats daily for 21 days. They measured various parameters of oxidative stress and inflammation in the rats' lungs, including total antioxidant capacity, glutathione level, and inflammatory parameters like tumor necrosis factor alpha and interleukin-1β. They also examined the expression of cannabinoid receptors in the lung tissue.

Potential Implications

The findings suggest that CBD could potentially serve as an adjuvant therapy for PH due to its antioxidant and anti-inflammatory effects. However, more detailed preclinical and clinical studies are needed to confirm these promising results.

Original Study

What are the Limitations of this Study?

The study was conducted on rats, so the results may not directly translate to humans. Additionally, the study focused on a specific type of PH induced by monocrotaline, so the findings may not apply to all types of PH.


This study provides preliminary evidence that CBD could potentially be used as a treatment for PH due to its antioxidant and anti-inflammatory properties. However, more research is needed to confirm these findings and to determine the optimal dosage and administration method for CBD in treating PH.


Back to blog