Review Article

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

Table 9

The protective effects of plant preparations against side effects of various drugs.

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

Ben Saad et al. [104]Opuntia ficus-indica cladode extract obtained by homogenization with 10 mM Tris HCl, pH 7.4, and subsequent centrifugation
Pretreatment, 100 mg/kg b.w.
30-day pretreatment and then for 30 days together with lithium
Male Wistar rats, 2 months
Li (lithium carbonate), 25 mg/kg b.w., i.p., twice daily for 30 days
Serum: glucose, TC, TG, ALT, AST, LDH, ALP ↑
Blood: RBC, HGB, HCT ↓, WBC ↑
Liver: SOD, CAT, GPx ↓, MDA ↑
Serum: ALT, AST (++), glucose, TC, TG, ALP, LDH (+++)
Blood: RBC, HGB, HCT, WBC (++)
Liver: CAT (++), SOD, GPx, MDA (+++)
None

Khalil et al. [105]Withania somnifera leaf
70% ethanol extract
Pretreatment, 100 mg/kg b.w., for 4 weeks
Male Wistar rats, 140–160 g
Isoproterenol 85 mg/kg b.w., s.c. on 29th and 30th days
Serum: TC, TG, VLDL-c, cTnI, CK-MB, LDH, AST, ALT ↑, HDL-c ↓
Heart: SOD, GR, GPx, GST ↓, MDA, weight ↑
Serum: CK-MB (0), TC, TG, VLDL-c, cTnI, LDH (++), HDL-c, AST, ALT (+++)
Heart: SOD, weight (++), GR, GPx, GST, MDA (+++)
Serum: HDL-c ↑
Heart: GPx, GST ↑

Dianita et al. [106]Labisia pumila var. alata water and 80% ethanolic extracts
100, 200, or 400 mg/kg, p.o., for 28 days
Male Wistar rats, 150-200 g
Isoproterenol, 85 mg/kg of s.c., on 29th and 30th day of the experiment
Serum: cTnI, CK-MB, LDH, AST, ALT ↑, SOD, CAT, GPx ↓
Heart: SOD, CAT, GPx ↓
Serum: cTnI (water extract ++ all doses, ethanol extract ++ 100 and 200, +++ 400), CK-MB, LDH, AST, ALT, SOD, CAT, GPx (++ both extracts all doses)
Heart: SOD, GPx (water extract + 100, ++200 and 400, ethanol extract ++ all doses), CAT (++ both extracts, all doses)
Not studied

Shahat et al. [107]Rhus tripartita 80% methanol extract of the stem part of male genotype
250 or 500 mg/kg/day p.o., for 21 days (19-day-pretreatment)
Male Wistar rats, about 180 g
Isoproterenol 85 mg/kg, s.c. on 20th and 21st days
Serum: AST, ALT, GGT, ALP, LDH, CK, TC, TG, LDL-c, VLDL-c↑, HDL-c ↓
Heart: MDA ↑, NP-SH and TP ↓
Serum: LDH, HDL-c (+ 250, ++500), AST, ALT, GGT, ALP, CK, TC, TG, LDL-c and VLDL-c (++ both doses)
Heart: MDA, NP-SH and TP (++ both doses)
Not studied

Kemka Nguimatio et al. [108]Aframomum melegueta seed water and methanol extracts
20 or 100 mg/kg for 28 days
Male Wistar rats, sexually experienced, 3-month-old, 200-250 g
Propylthiouracil-induced hypothyroidism causing ejaculatory complications
10 mg/[kg·day] for 28 days
Plasma: T ↓, TSH and prolactin ↑
Proejaculatory activity (contractile activity of the striated bulbospongiosus muscles): number of contractions after tactile stimulation and pharmacological activation (dopamine) ↓, intraseminal pressure after tactile stimulation and pharmacological activation (dopamine) ↓
Water extract:
Plasma: TSH (0 both doses), T (+ 20, +++ 100), prolactin (+ 20, ++ 100)
Proejaculatory activity: contractions number after both stimuli (+++ 20, ↑ 100), intraseminal pressure: tactile stimulation (↑ both doses), pharmacological activation (+++ both doses)
Methanol extract:
Plasma: TSH (0 20, +100), T (+ 20, ++ 100), prolactin (++ 20, +100)
Proejaculatory activity: contractions number after both stimuli (↑ both doses), intraseminal pressure: tactile stimulation (↑ both doses), pharmacological activation (+++ 20, ↑100)
Not studied

Nasri et al. [109]Green tea 70% ethanol extract
Posttreatment: after iodixanol, 10 mg/kg/d, i.p., for 3 days
Pretreatment 10 mg/kg/d, i.p., for 3 days and iodixanol on the 3rd day
Male Wistar rats, 6-week-aged, 200-250 g
Iodixanol, a contrast medium
10 mL/kg, i.v., a single dose
Renal tubular cells: dilatation, degeneration, vacuolization, debris ↑
Posttreatment:
Renal tubular cells: dilatation, degeneration, vacuolization, debris (++)
Pretreatment:
Renal tubular cells: dilatation, degeneration, vacuolization, debris (++)
Pretreatment showed a slightly better effect
Not studied

El-Rahman et al. [110]Saussurea lappa roots
70% ethanol extract
600 mg/kg, p.o., daily
Cotreatment for 2 weeks concurrently with the drug
Pretreatment for 1 week and then for 2 weeks concurrently with the drug
Male albino rats,150–160 g
Triamcinolone acetonide
40 mg/kg, i.p., twice a week for 2 weeks
Serum: TNF-α, CRP, IL-12, IgG, IgM ↓
Lung: GPx, SOD ↓, MDA ↑
Spleen: GPx, SOD ↓, MDA ↑
Histopathological lesion score: spleen and lung ↑
Cotreatment:
Serum: TNF-α and CRP (0), IL-12 and IgG (+), IgM (++)
Lung: GPx (+), SOD, MDA (++)
Spleen: GPx, SOD, MDA (++)
Histopathological lesion: spleen and lung (++)
Pretreatment:
Serum: TNF-α, IL-12, CRP (0), IgG, IgM (++)
Lung: GPx, SOD, MDA (++)
Spleen: GPx, SOD (++), MDA (+++)
Histopathological lesion: spleen and lung (++)
Serum: TNF-α, CRP, IL-12, ↓, IgG, IgM ↑
Lung: GPx, SOD ↑, MDA ↓
Spleen: GPx, SOD ↑, MDA ↓

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