Related Experiment Video
Updated: Jan 22, 2026
09:37
Monitoring Heart Function in Larval Drosophila melanogaster for Physiological Studies
Published on: November 16, 2009
19.4K
Inhalation of marijuana affects Drosophila heart function
Ivana M Gómez1, Maia A Rodríguez1, Manuela Santalla1,2
1Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', Facultad de Ciencias Médicas, UNLP, La Plata 1900, Argentina.
Biology Open
|July 21, 2019
Summary
Vaporized marijuana exposure affects fruit fly heart function, altering heart rate variability and contractility. These cardiac changes occur even without typical cannabinoid receptors, suggesting novel mechanisms of action for phytocannabinoids.
Area of Science:
- Cardiology
- Pharmacology
- Genetics
Background:
- The cardiac effects of marijuana (cannabis) are not fully understood, particularly at the cellular and molecular levels.
- Drosophila melanogaster serves as a valuable genetic model for studying human diseases, including cardiovascular conditions.
Purpose of the Study:
- To investigate the in vivo effects of inhaled vaporized marijuana on cardiac function in Drosophila melanogaster.
- To characterize the impact of phytocannabinoids on cardiomyocyte contractility and calcium handling.
Main Methods:
- Adult Drosophila melanogaster were exposed to vaporized marijuana for varying durations.
- Cardiac function, including heart rate variability and contractility, was assessed.
- Calcium transients within cardiomyocytes were measured.
Main Results:
- Short-term marijuana exposure increased heart rate variability.
- Prolonged exposure augmented cardiac contractility, associated with increased cardiomyocyte calcium transients.
- Observed cardiac changes occurred independently of canonical cannabinoid receptors.
Conclusions:
- Inhaled marijuana impacts cardiac function in Drosophila melanogaster, affecting heart rate and contractility.
- The study provides the first in vivo evidence of phytocannabinoid effects on Drosophila cardiac function.
- This model offers a platform for genetic screening of vaporized compounds' cardiovascular effects.
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