The effects of methanol extract of Lobaria pulmonaria
, a lichen species, on indometacin-induced gastric mucosal damage, oxidative stress and neutrophil infiltration

High fat high sugar (HFHS) diet results in various disorders including oxidative stress. In present study, prebiotics supplementation was given to rats following HFHS diet feeding. The results showed that prebiotics significantly lowered the HFHS-diet associated elevated levels of cholesterol, triglyceride, low density lipids, alkaline phosphatase, blood urea, creatinine, uric acid and total proteins. Prebiotics significantly restored the HFHS-diet induced decrease in total anti-oxidant capacity. The levels of alanine aminotransferase, aspartate aminotransferase, bilirubin, total oxidation status, malondialdehyde, paraoxonase and arylesterase were not significantly different in HFHS-Prebiotics group as compared to control group. Histological analyses of liver, intestine and kidney tissues in HFHS-group showed cytoplasmic vacuolation, mucosal damage, hepatic triad abnormalities, eccentric nuclei, focal necrosis, tubular congestion and neutrophil infiltration which were significantly improved in HFHS+Prebiotics group suggesting ameliorative potential of prebiotics. In conclusion, our results demonstrated that prebiotics possess therapeutic potential in ameliorating HFHS-diet associated alterations in metabolic profile, oxidative stress markers and histological architecture in intestine, liver and kidney tissues

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Involvement of oxidative stress in the pathogenesis of NSAID-induced gastric mucosal damage

Journal of Gastroenterology ◽

10.1007/s005350070083 ◽

2000 ◽

Vol 35 (7) ◽

pp. 567-569 ◽

Cited By ~ 14

Author(s):

Hideyuki Hiraishi ◽

Tadahito Shimada ◽

Akira Terano

Keyword(s):

Oxidative Stress ◽

Mucosal Damage ◽

Gastric Mucosal Damage

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Reduction of paw edema and liver oxidative stress in carrageenan-induced acute inflammation by Lobaria pulmonaria and Parmelia caperata, lichen species, in mice

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000620 ◽

2019 ◽

pp. 1-9

Author(s):

Samira Salem ◽

Essaid Leghouchi ◽

Rachid Soulimani ◽

Jaouad Bouayed

Keyword(s):

Time Course ◽

Acute Inflammation ◽

Lichen Species ◽

Paw Edema ◽

Sod Activity ◽

Edema Formation ◽

Lobaria Pulmonaria ◽

Anti Inflammatory ◽

Endogenous Antioxidant ◽

Inflammatory Effect

Abstract. Paw edema volume reduction is a useful marker in determining the anti-inflammatory effect of drugs and plant extracts in carrageenan-induced acute inflammation. In this study, the anti-inflammatory effect of Lobaria pulmonaria (LP) and Parmelia caperata (PC), two lichen species, was examined in carrageenan-induced mouse paw edema test. Compared to the controls in carrageenan-induced inflammation (n = 5/group), our results showed that pretreatment by single oral doses with PC extract (50–500 mg/kg) gives better results than LP extract (50–500 mg/kg) in terms of anti-edematous activity, as after 4 h of carrageenan subplantar injection, paw edema formation was inhibited at 82–99% by PC while at 35–49% by LP. The higher anti-inflammatory effect of PC, at all doses, was also observed on the time-course of carrageenan-induced paw edema, displaying profile closely similar to that obtained with diclofenac (25 mg/kg), an anti-inflammatory drug reference (all p < 0.001). Both LP and PC, at all doses, significantly ameliorated liver catalase (CAT) activity (all p < 0.05). However, superoxide dismutase (SOD) activity, glutathione peroxidase (GPx) activity and glutathione (GSH) levels were found increased in liver of PC- compared to LP-carrageenan-injected mice. Our findings demonstrated on one hand higher preventive effects of PC compared to LP in a mouse carrageenan-induced inflammatory model and suggested, on the other hand, that anti-inflammatory effects elicited by the two lichens were closely associated with the amelioration in the endogenous antioxidant status of liver.

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