Review Article

The Great Healing Potential Hidden in Plant Preparations of Antioxidant Properties: A Return to Nature?

Table 5

The protective effects of plant origin substances against toxicity of ethanol.

ReferencePlant preparation, dose, way and time of treatment, and animalsThe dose, way and time of exposure, and negative effectsProtective effects of plant preparationEffects of plant per se

Akbari et al. [93]Zingiber officinale Roscoe (ginger) rhizome hydroalcoholic extract
1 g/kg of b.w./d, p.o., for 28 days
Sprague-Dawley male rats, about 220 g
Ethanol 4 g/kg of b.w./d, p.o., for 28 days
Serum: T, SHBG, DHEAs ↓
Testes: weight, Zn, Mg, Fe, Cu ↓; SOD, GPx, CAT ↓, MDA, tHcy ↑
Serum: T (++), SHBG, DHEAs (+++)
Testes: Zn (-), Cu (+), Mg, weight, SOD, GPx, CAT, MDA, tHcy (+++),
Fe (↑)
Serum: T ↓
Testes: Fe ↑, Zn, Mg, Cu ↓

Phunchago et al. [92]Tiliacora triandra aerial parts aqueous extract, 100, 200 or 400 mg/kg b.w., p.o., for 14 days after developing ethanol dependence by15-week alcohol treatment
Male Wistar rats, 8 weeks
Ethanol-dependence caused by a gradual increase of ethanol content in drinking fluid from 5% up to 30%, a 15-week alcohol treatment
Hippocampus: AChE, MDA ↑, SOD, CAT, GPx ↓, neuron density in subregions CA1, CA2, CA3 and dentate gyrus ↓
Hippocampus: AChE (+ 100, ++ 200, 0 400), CAT (+++ 100 and 200, ++ 400), GPx (↑ 100 and 200, +++ 400), MDA, SOD (++ all doses), neuron density in subregions CA1, CA2, and CA3 and dentate gyrus (++ all doses)Not studied

Liu et al. [91]Ginseng oligopeptides extracted from roots of Panax ginseng C.A. Meyer (Jilin Taigu Biological Engineering Co., Ltd., China)
Pretreatment: 0.0625, 0.125, 0.25, and 0.5 g/kg b.w., for 30 days, p.o.,
Sprague-Dawley male rats, 180-220 g
One dose of 50% ethanol
7 g (17.5 mL)/kg b.w., i.g.
Serum: ALT, AST, TG, ALP, TNF-α, IL-6, IL-1β and LPS ↑, TC, HDL-c, LDL-c, TP ↓
Liver: steatosis and MDA ↑, SOD, GSH, GPx ↓
Serum: ALP (- lower doses, 0 the highest one); LDL-c, TP (0 all doses), HDL-c (0 the lowest dose, + other ones), TC (++ all doses), TG (++ lower doses, +++ higher ones), LPS (+++ except for 0.25 mg/kg ++), ALT, AST, (+++ all doses), TNF-α, IL-6 and IL-1β (↓ all doses)
Liver: steatosis (++ all doses), GPx (+ lower doses, +++ 0.25, ↑ 0.5), GSH (+ lower doses, +++ higher ones), MDA (+++ all doses), SOD (+ lower doses, ++ highest one)
Not studied

Jung et al. [94]Glycyrrhiza uralensis Fisher root
70% ethanol extract
100 mg/kg b.w., p.o., for 4 weeks
Male C57BL/6 mice
Dietary ethanol
Lieber–DeCarli liquid diet—36% of energy from ethanol, for 4 weeks
Serum: TNF-α, ALT, AST ↑
Liver: GSH ↓, TG and mRNA expression of Srebf1, Cd36, Lpl, Fatp4 ↑
Serum: TNF-α, ALT, AST (++)
Liver: TG, mRNA expression of Srebf1, Cd36 and LpI (++), GSH and mRNA expression of Fatp4 (+++)
Not studied

Lou et al. [65]Linderae radix (prepared slices, Zhejiang Tiantaishan Wuyao Biological Engineering Co., Ltd., China) extracted from tubers of Lindera aggregata (Sims) Kostern, 75% ethanol extract
1, 2 or 4 g/kg, i.g., for 20 days
Male Sprague-Dawley rats, 160–180 g
50% alcohol
10 mL/kg b.w., once a day for 20 days, i.g.
Serum: ALT, total bilirubin, IL-6, IL-8, TNF-α, NF-κB ↑
Portal vein: LPS ↑
Small intestine: expression of tight junction proteins claudin-1 and occludin ↓
Serum: IL-6 (+ 1 and 2, +++ 4), TNF-α (+++ 1, ++ 2, 0 4), NF-κB (++ 1, +++ 2, and 4), ALT, total bilirubin, IL-8 (+++ all doses)
Portal vein: LPS (+++ all doses)
Small intestine: expression of tight junction proteins claudin-1 (+ all doses) and occludin (+++ 1, ++ 2, 0 4)
Not studied

Tang et al. [56]Cynara scolymus L. (artichoke) in freeze-dried powder (Huimei Agricultural Science and Technology Co., Ltd., China)
Pretreatment, 1 hour before alcohol
0.4, 0.8 or 1.6 g/kg b.w., p.o., daily for 10 days
Male Institute of Cancer Research, mice, 7-week-old about 25 g
Ethanol 12 mL/kg b.w., p.o., daily for 10 days
Liver index: ↑
Serum: ALT, AST, TG, TC ↑
Liver: SOD, GSH ↓, MDA↑, expression level of TLR4 and NF-κB p50 ↑, score of steatosis, inflammation and necrosis ↑
Liver index: (++ all doses)
Serum: ALT (0 0.4, + 0.8, +++ 1.6),TG (0 0.4, ++ 0.8 and 1.6), AST (+ 0.4 and 0.8, ++ 1.6), TC (+ 0.4, ++ 0.8 and 1.6)
Liver: SOD, GSH (++ 0.4 and 0.8, +++ 1.6), MDA (+ 0.4, +++ 0.8, and 1.6), score of steatosis (+ 0.4, ++ 0.8, and 1.6), score of inflammation (+ 0.4, ++ 0.8, and 1.6), score of necrosis (++ all doses), expression of TLR4 (+ 0.4, ++ 0.8, +++ 1.6), expression of NF-κB p50 (++ 0.4, +++ 0.8 and 1.6)
Not studied

Dogan and Anuk [44]Platanus orientalis L. leas water extract
20 or 60 mg/mL leaf infusion ad libitum, for 28 days
Male Wistar rats, 2 months aged, about 200 g
20% ethanol water ad libitum for 28 days
Serum: AST, ALT, LDH, GGT, UA, urea ↑, cholesterol, HDL-c ↓
Liver: GSH ↓, GST, MDA ↑
Erythrocytes: GST, MDA ↑
Kidney: MDA ↑, SOD, GPx, CAT ↓
Serum: GGT (- 20, ++ 60), ALT, urea (+ 20, 0 60), HDL-c (+ both doses), LDH (++ 20, +++ 60), cholesterol (++ 20, + 60), AST, UA (+++ both doses)
Liver: GSH and GST (+ both doses), MDA (++ both doses)
Erythrocytes: GST (0 both doses), MDA (++ 20, +++ 60)
Kidney: SOD (- 20, + 60), CAT (- 20, ++ 60), MDA (+++ both doses), GPx (+++ 20, ↑ 60)
Not studied

↓: a decrease vs. control; ↑: an increase vs. control; (+): a slight beneficial effect; (++): a distinct beneficial effect; (+++): a complete beneficial effect; (0): no beneficial effect; (-): intensification of the harmful effect.