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. 2004 Feb;13(1):21-4.
doi: 10.1080/09629350410001664798.

Suppression of neutrophil recruitment in mice by geranium essential oil

Shigeru Abe  1 , Naho Maruyama, Kazumi Hayama, Shigeharu Inouye, Haruyuki Oshima, Hideyo Yamaguchi
Affiliations

Suppression of neutrophil recruitment in mice by geranium essential oil

Shigeru Abe et al. Mediators Inflamm. 2004 Feb.

Abstract

Background: In aromatherapy, essential oils are used as anti-inflammatory remedies, but experimental studies on their action mechanisms are very limited.

Aims of the study: To assess their anti-inflammatory activities, the effects of essential oils on neutrophil recruitment in mice were examined in vivo.

Method: The effect of essential oils on leukocyte and neutrophil recruitment induced 6 h after intraperitoneal injection of casein in mice was examined.

Results: Leukocyte recruitment into the peritoneal cavity in mice was suppressed by intraperitoneal injections of geranium, lemongrass and spearmint oils at the dose of 5 microl/mouse, but was not by tea tree oil. This recruitment was inhibited dose-dependently by geranium oil. The suppression of leukocyte recruitment resulted from inhibition of neutrophil accumulation.

Conclusion: Some essential oils used as anti-inflammatory remedies suppress neutrophil recruitment into the peritoneal cavity in mice.

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