Acta parasitologica · 2025
First Report of the Anti-Parasitic Effect of a Cannabis sativa full-spectrum Extract on Echinococcus granulosus sensu stricto.
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Gatti Florencia, Albani Clara María, Ramírez Cristina Luján, Pensel Patricia Eugenia, Albanese Adriana Andrea, Fuentes Giselle Magalí, Orallo Dalila Elisabet, Nutter Diego, Elissondo María Celina
Аннотация
PURPOSE: Cystic echinococcosis is a parasitic zoonosis caused by the larval stage of Echinococcus granulosus sensu lato. Albendazole (ABZ) is the drug of choice, although its efficacy is variable. The present research aimed to assess the in vitro and in vivo efficacy of a full-spectrum extract of Cannabis sativa inflorescences against E. granulosus sensu stricto (s.s.).
METHODS: Protoscoleces and cysts were incubated in vitro with the C. sativa extract, achieving final CBD concentrations of 1, 5, 10, and 50 µg/ml. Viability was evaluated periodically. Structural and ultrastructural alterations were also recorded. For the clinical efficacy study, female CF-1 mice were infected. Six months later, mice were divided into groups (n = 10): (a) water control; (b) ABZ; (c) C. sativa extract, and (d) ABZ + C. sativa extract. Treatments were administered every 24 h for 30 days. The efficacy of the treatments was evaluated according to the weight of the cysts collected and the ultrastructural alterations observed.
RESULTS: The C. sativa extract caused a significant decrease in the viability of protoscoleces and cysts in vitro. The greatest effect was observed with 50 µg/ml, which generated the reduction in protoscoleces viability to 0% between 6 and 24 h post-incubation (pi) and the collapse of 92 ± 13% of the cysts after 24 h pi. All the in vivo treatments reduced the weight of the cysts and caused ultrastructural alterations, especially the combination of ABZ + C. sativa extract.
CONCLUSION: We demonstrated the in vitro and in vivo efficacy of a full-spectrum extract of C. sativa inflorescences against E. granulosus s.s.
METHODS: Protoscoleces and cysts were incubated in vitro with the C. sativa extract, achieving final CBD concentrations of 1, 5, 10, and 50 µg/ml. Viability was evaluated periodically. Structural and ultrastructural alterations were also recorded. For the clinical efficacy study, female CF-1 mice were infected. Six months later, mice were divided into groups (n = 10): (a) water control; (b) ABZ; (c) C. sativa extract, and (d) ABZ + C. sativa extract. Treatments were administered every 24 h for 30 days. The efficacy of the treatments was evaluated according to the weight of the cysts collected and the ultrastructural alterations observed.
RESULTS: The C. sativa extract caused a significant decrease in the viability of protoscoleces and cysts in vitro. The greatest effect was observed with 50 µg/ml, which generated the reduction in protoscoleces viability to 0% between 6 and 24 h post-incubation (pi) and the collapse of 92 ± 13% of the cysts after 24 h pi. All the in vivo treatments reduced the weight of the cysts and caused ultrastructural alterations, especially the combination of ABZ + C. sativa extract.
CONCLUSION: We demonstrated the in vitro and in vivo efficacy of a full-spectrum extract of C. sativa inflorescences against E. granulosus s.s.