Prophylactic effects of Syzygium aromaticum essential oil on developing wistar rats co-exposed to lead and manganese

  • D. E. H. Adli
  • K. Kahloula
  • M. Slimani
  • M. Brahmi
  • M. Benreguieg


The objective of this study is, on the one hand, to evaluate the changes in the oxidative state at the brain level induced by co-exposure to lead (0.2%) and manganese (4.79 g/l) in young wistar rats during the gestation and lactation period, and on the other hand, to test the effectiveness of clove essential oil Syzygium aromaticum (HEC) in relieving the harmful effects of these two metals studied by an intraperitoneal injection of 0.1 ml HEC/kg/day over a period of 21 days. The characterization of this essential oil by gas chromatography coupled with mass spectrometry indicates that the major components are: eugenol (80.83%), acetate eugenyl (10.48%), and β-caryophyllene (7.21%). Chronic co-exposure led to disturbance in antioxidant enzymatic activities (superoxide dismutase, glutathione peroxidase, and catalase) in intoxicated rats compared to control rats. Indeed, the histological study of the cerebral cortex and cerebellum showed very marked lesions translated by degeneration of the nerve cells and activation of the microglia. Moreover, HEC administration restored the activity of the various antioxidant enzymes with a marked improvement in brain tissue architecture in intoxicated rats treated with HEC.


Lead Manganese Rat Syzygium aromaticum Brain 

Effets prophylactiques de l’huile essentielle de Syzygium aromaticum chez les rats wistar en développement coexposés au plomb et au manganèse


L’objectif de cette étude est d’évaluer les modifications du statut oxydatif au niveau cérébral, induites par la coexposition au plomb (0,2 %) et au manganèse (4,79 g/l) chez des jeunes rats wistar durant la période de gestation et de lactation, et de tester l’efficacité de l’huile essentielle de clou de girofle (HEC), Syzygium aromaticum, pour rétablir ou non les effets néfastes de ces deux métaux, et cela par une injection intrapéritonéale de 0,1 ml d’HEC/kg et par jour durant une période de 21 jours. La caractérisation de cette huile essentielle par chromatographie en phase gazeuse couplée à la spectrométrie de masse indique que les composants majeurs sont : eugénol (80,83 %), acétate d’eugényle (10,48 %) et β-caryophyllène (7,21 %). La coexposition chronique a permis d’observer une perturbation dans les activités enzymatiques antioxydantes (superoxyde-dismutase, glutathion-peroxydase et catalase) chez les rats intoxiqués comparés aux rats témoins. En effet, l’étude histologique au niveau du cortex cérébral et du cervelet a montré des lésions très marquées traduites par une dégénérescence des cellules nerveuses et l’activation des microglies. Par ailleurs, l’administration d’HEC a rétabli l’activité des différentes enzymes antioxydantes avec une nette amélioration de l’architecture tissulaire cérébrale chez les rats intoxiqués et traités par HEC.

Mots clés

Plomb Manganèse Rat Syzygium aromaticum Cerveau 


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Copyright information

© Lavoisier 2017

Authors and Affiliations

  • D. E. H. Adli
    • 1
  • K. Kahloula
    • 1
  • M. Slimani
    • 1
  • M. Brahmi
    • 1
  • M. Benreguieg
    • 1
  1. 1.Laboratory of biotoxicology, pharmacognosy and biological recovery of plants, Department of biology, faculty of sciencesUniversity of Dr Moulay TaherSaidaAlgeria

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