Eugenol [2-Methoxy-4-(2-propenyl)phenol] Prevents 6-Hydroxydopamine-Induced Dopamine Depression and Lipid Peroxidation Inductivity in Mouse Striatum

Kabuto, Hideaki; Tada, Mika; Kohno, Masahiro

doi:10.1248/bpb.30.423

Cited by 89 publications

(70 citation statements)

References 28 publications

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“…Eugenol also forms complexes with reduced metals, thus, inhibiting the formation of perferryl ion or iron-oxygen chelate complex as the initiating factor of lipid peroxidation (Ito et al, 2005). Moreover, eugenol acts indirectly by increasing GSH which is an antioxidant itself and plays a pivotal role in reducing lipid peroxides (Kabuto et al, 2007). The present results also revealed that eugenol significantly reduced gastric mucosal NO level, an action that may be involved in its gastroprotective effect.…”

Section: Discussionsupporting

confidence: 61%

Mechanisms of gastroprotective effect of eugenol in indomethacin‐induced ulcer in rats

Morsy

Fouad

2008

Phytotherapy Research

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Possible mechanisms underlying the gastroprotective effect of eugenol against indomethacin-induced ulcer in rats were investigated. Pyloric ligation was performed for collection of gastric juice, and gastric ulceration was induced by a single intraperitoneal (i.p.) injection of indomethacin (30 mg/kg). Pretreatment with a single dose of eugenol (100 mg/kg, orally), 1 h before indomethacin administration caused significant reductions in gastric mucosal lesions, gastric acid outputs and pepsin activity associated with a significant increase in mucin concentration. Additionally, eugenol significantly attenuated the elevations in gastric mucosal malondialdehyde and total nitrite, and the decrease in reduced glutathione observed with indomethacin. The protective effect afforded by eugenol was significantly inhibited by prior administration of glibenclamide, the ATP-sensitive potassium (K(ATP)) channel blocker, but not by prior use of ruthenium red, the transient receptor potential vanilloid 1 (TRPV1) antagonist. The results indicate that the anti-ulcer effect of eugenol is mediated by opening of K(ATP) channels, scavenging free radicals, decreasing acid-pepsin secretion, increasing mucin production, and preventing the deleterious rise in nitric oxide level.

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Section: Discussionsupporting

confidence: 61%

Mechanisms of gastroprotective effect of eugenol in indomethacin‐induced ulcer in rats

Morsy

Fouad

2008

Phytotherapy Research

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“…We also have reported that pre-treatment of eugenol, a naturally occurring phenol extracted from cloves, protects against 6-OHDA-induced depletion of striatal DA by increasing the concentrations of reduced glutathione (GSH) and Asc [8]. Zingerone and eugenol are known to be antioxidants [9][10][11][12] themselves.…”

Section: Introductionmentioning

confidence: 99%

Effects of Zingerone [4-(4-Hydroxy-3-Methoxyphenyl)-2-Butanone] and Eugenol [2-Methoxy-4-(2-Propenyl)Phenol] on the Pathological Progress in the 6-Hydroxydopamine-Induced Parkinson’s Disease Mouse Model

Kabuto

Yamanushi

2011

Neurochem Res

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Parkinson's disease (PD) is characterized by progressive degeneration of dopaminergic neurons in the nigrostriatal system and dopamine (DA) depletion in the striatum. The most popular therapeutic medicine for treating PD, 3-(3,4-Dihydroxyphenyl)-L-alanine (L-DOPA), has adverse effects, such as dyskinesia and disease acceleration. As superoxide (·O(2)(-)) and hydroxyl radical (·OH) have been implicated in the pathogenesis of PD, free radical scavenging and antioxidants have attracted attention as agents to prevent disease progression. Rodents injected with 6-hydroxydopamine (6-OHDA) intracerebroventricularly are considered to be a good animal model of PD. Zingerone and eugenol, essential oils extracted from ginger and cloves, are known to have free radical scavenging and antioxidant effects. Therefore, we examined the effects of zingerone and eugenol on the behavioral problems in mouse model and on the DA concentration and antioxidant activities in the striatum after 6-OHDA administration and L-DOPA treatment. Daily oral administration of eugenol/zingerone and injection of L-DOPA intraperitoneally for 4 weeks following a single 6-OHDA injection did not improve abnormal behaviors induced by L-DOPA treatment. 6-OHDA reduced the DA level in the striatum; surprisingly, zingerone and eugenol enhanced the reduction of striatal DA and its metabolites. Zingerone decreased catalase activity, and increased glutathione peroxidase activity and the oxidized L-ascorbate level in the striatum. We previously reported that pre-treatment with zingerone or eugenol prevents 6-OHDA-induced DA depression by preventing lipid peroxidation. However, the present study shows that post-treatment with these substances enhanced the DA decrease. These substances had adverse effects dependent on the time of administration relative to model PD onset. These results suggest that we should be wary of ingesting these spice elements after the onset of PD symptoms.

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“…In addition, eugenol was previously reported to protect neuronal cells from excitotoxic and oxidative injury in mouse cortical cultures (18). Furthermore, it prevented from 6-hydroxydopamine (6-OHDA)-induced neurotoxicity in mouse striatum (19) and provided a neuroprotective effect against hippocampal CA1 neuronal ischemia-induced injury in gerbils (20). It also proved to protect against acrylamide-induced neuropathy (21) and chlorpyrifos-induced brain toxicity (12) in rats, which may at least in part be attributed to its antioxidative stress activity.…”

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confidence: 99%

Neuroprotective effects of eugenol against aluminiuminduced toxicity in the rat brain

Said

Rabo

2017

Archives of Industrial Hygiene and Toxicology

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Aluminium (Al) is a neurotoxic metal that contributes to the progression of several neurodegenerative diseases. The aim of the present study was to evaluate the protective effect of dietary eugenol supplementation against aluminium (Al)- induced cerebral damage in rats. Male Wistar rats were divided into four groups: normal controls, rats fed a diet containing 6,000 μg g-1 eugenol, rats intoxicated daily with aluminium chloride (84 mg kg-1 body weight) p. o. and fed either a basal diet or a eugenol-containing diet. Daily oral administration of Al for four consecutive weeks to rats significantly reduced brain total antioxidant status (TAS) (11.42±0.31 μmol g-1 tissue, p<0.001) with a subsequent significant enhancement of lipid peroxidation (MDA) (32.55±1.68 nmol g-1 tissue, p<0.002). In addition, Al enhanced brain acetylcholinesterase activity (AChE) (46.22±4.90 U mg-1 protein, p<0.001), tumour necrosis factor alpha (TNF-α) (118.72±11.32 pg mg-1 protein, p<0.001), and caspase 3 (Casp-3) (8.77±1.26 ng mg-1 protein, p<0.001) levels, and in contrast significantly suppressed brain-derived neurotrophic factor (BDNF) (82.74±14.53 pg mg-1 protein, p<0.002) and serotonin (5-HT) (1.54±0.12 ng mg-1 tissue, p<0.01) levels. Furthermore, decreased glial fibrillary acidic protein (GFAP) immunostaining was noticed in the striatum of Al-intoxicated rats, compared with untreated controls. On the other hand, co-administration of dietary eugenol with Al intoxication restored brain BDNF (108.76±2.64 pg mg-1 protein) and 5-HT (2.13±0.27 ng mg-1 tissue) to normal levels, enhanced brain TAS (13.43±0.24 μmol g-1 tissue, p<0.05), with a concomitant significant reduction in TNF-α (69.98±4.74 pg mg-1 protein) and Casp-3 (3.80±0.37 ng mg-1 protein) levels (p<0.001), as well as AChE activity (24.50±3.25 U mg-1 protein, p<0.001), and increased striatal GFAP immunoreactivity, compared with Al-treated rats. Histological findings of brain tissues verified biochemical data. In conclusion, eugenol holds potential as a neuroprotective agent through its hydrophobic, antioxidant, and anti-apoptotic properties, as well as its neurotrophic ability against Al-induced brain toxicity in rats.

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Eugenol [2-Methoxy-4-(2-propenyl)phenol] Prevents 6-Hydroxydopamine-Induced Dopamine Depression and Lipid Peroxidation Inductivity in Mouse Striatum

Cited by 89 publications

References 28 publications

Mechanisms of gastroprotective effect of eugenol in indomethacin‐induced ulcer in rats

Mechanisms of gastroprotective effect of eugenol in indomethacin‐induced ulcer in rats

Effects of Zingerone [4-(4-Hydroxy-3-Methoxyphenyl)-2-Butanone] and Eugenol [2-Methoxy-4-(2-Propenyl)Phenol] on the Pathological Progress in the 6-Hydroxydopamine-Induced Parkinson’s Disease Mouse Model

Neuroprotective effects of eugenol against aluminiuminduced toxicity in the rat brain

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